diff options
Diffstat (limited to 'qemu/target-arm/helper.c')
| -rw-r--r-- | qemu/target-arm/helper.c | 9381 |
1 files changed, 0 insertions, 9381 deletions
diff --git a/qemu/target-arm/helper.c b/qemu/target-arm/helper.c deleted file mode 100644 index 09638b2e7..000000000 --- a/qemu/target-arm/helper.c +++ /dev/null @@ -1,9381 +0,0 @@ -#include "qemu/osdep.h" -#include "cpu.h" -#include "internals.h" -#include "exec/gdbstub.h" -#include "exec/helper-proto.h" -#include "qemu/host-utils.h" -#include "sysemu/arch_init.h" -#include "sysemu/sysemu.h" -#include "qemu/bitops.h" -#include "qemu/crc32c.h" -#include "exec/cpu_ldst.h" -#include "arm_ldst.h" -#include <zlib.h> /* For crc32 */ -#include "exec/semihost.h" -#include "sysemu/kvm.h" - -#define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */ - -#ifndef CONFIG_USER_ONLY -static bool get_phys_addr(CPUARMState *env, target_ulong address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, - target_ulong *page_size, uint32_t *fsr, - ARMMMUFaultInfo *fi); - -static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, - target_ulong *page_size_ptr, uint32_t *fsr, - ARMMMUFaultInfo *fi); - -/* Definitions for the PMCCNTR and PMCR registers */ -#define PMCRD 0x8 -#define PMCRC 0x4 -#define PMCRE 0x1 -#endif - -static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg) -{ - int nregs; - - /* VFP data registers are always little-endian. */ - nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; - if (reg < nregs) { - stfq_le_p(buf, env->vfp.regs[reg]); - return 8; - } - if (arm_feature(env, ARM_FEATURE_NEON)) { - /* Aliases for Q regs. */ - nregs += 16; - if (reg < nregs) { - stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]); - stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]); - return 16; - } - } - switch (reg - nregs) { - case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4; - case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4; - case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4; - } - return 0; -} - -static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) -{ - int nregs; - - nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16; - if (reg < nregs) { - env->vfp.regs[reg] = ldfq_le_p(buf); - return 8; - } - if (arm_feature(env, ARM_FEATURE_NEON)) { - nregs += 16; - if (reg < nregs) { - env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf); - env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8); - return 16; - } - } - switch (reg - nregs) { - case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4; - case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4; - case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4; - } - return 0; -} - -static int aarch64_fpu_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg) -{ - switch (reg) { - case 0 ... 31: - /* 128 bit FP register */ - stfq_le_p(buf, env->vfp.regs[reg * 2]); - stfq_le_p(buf + 8, env->vfp.regs[reg * 2 + 1]); - return 16; - case 32: - /* FPSR */ - stl_p(buf, vfp_get_fpsr(env)); - return 4; - case 33: - /* FPCR */ - stl_p(buf, vfp_get_fpcr(env)); - return 4; - default: - return 0; - } -} - -static int aarch64_fpu_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg) -{ - switch (reg) { - case 0 ... 31: - /* 128 bit FP register */ - env->vfp.regs[reg * 2] = ldfq_le_p(buf); - env->vfp.regs[reg * 2 + 1] = ldfq_le_p(buf + 8); - return 16; - case 32: - /* FPSR */ - vfp_set_fpsr(env, ldl_p(buf)); - return 4; - case 33: - /* FPCR */ - vfp_set_fpcr(env, ldl_p(buf)); - return 4; - default: - return 0; - } -} - -static uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - assert(ri->fieldoffset); - if (cpreg_field_is_64bit(ri)) { - return CPREG_FIELD64(env, ri); - } else { - return CPREG_FIELD32(env, ri); - } -} - -static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - assert(ri->fieldoffset); - if (cpreg_field_is_64bit(ri)) { - CPREG_FIELD64(env, ri) = value; - } else { - CPREG_FIELD32(env, ri) = value; - } -} - -static void *raw_ptr(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return (char *)env + ri->fieldoffset; -} - -uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri) -{ - /* Raw read of a coprocessor register (as needed for migration, etc). */ - if (ri->type & ARM_CP_CONST) { - return ri->resetvalue; - } else if (ri->raw_readfn) { - return ri->raw_readfn(env, ri); - } else if (ri->readfn) { - return ri->readfn(env, ri); - } else { - return raw_read(env, ri); - } -} - -static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t v) -{ - /* Raw write of a coprocessor register (as needed for migration, etc). - * Note that constant registers are treated as write-ignored; the - * caller should check for success by whether a readback gives the - * value written. - */ - if (ri->type & ARM_CP_CONST) { - return; - } else if (ri->raw_writefn) { - ri->raw_writefn(env, ri, v); - } else if (ri->writefn) { - ri->writefn(env, ri, v); - } else { - raw_write(env, ri, v); - } -} - -static bool raw_accessors_invalid(const ARMCPRegInfo *ri) -{ - /* Return true if the regdef would cause an assertion if you called - * read_raw_cp_reg() or write_raw_cp_reg() on it (ie if it is a - * program bug for it not to have the NO_RAW flag). - * NB that returning false here doesn't necessarily mean that calling - * read/write_raw_cp_reg() is safe, because we can't distinguish "has - * read/write access functions which are safe for raw use" from "has - * read/write access functions which have side effects but has forgotten - * to provide raw access functions". - * The tests here line up with the conditions in read/write_raw_cp_reg() - * and assertions in raw_read()/raw_write(). - */ - if ((ri->type & ARM_CP_CONST) || - ri->fieldoffset || - ((ri->raw_writefn || ri->writefn) && (ri->raw_readfn || ri->readfn))) { - return false; - } - return true; -} - -bool write_cpustate_to_list(ARMCPU *cpu) -{ - /* Write the coprocessor state from cpu->env to the (index,value) list. */ - int i; - bool ok = true; - - for (i = 0; i < cpu->cpreg_array_len; i++) { - uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); - const ARMCPRegInfo *ri; - - ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); - if (!ri) { - ok = false; - continue; - } - if (ri->type & ARM_CP_NO_RAW) { - continue; - } - cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri); - } - return ok; -} - -bool write_list_to_cpustate(ARMCPU *cpu) -{ - int i; - bool ok = true; - - for (i = 0; i < cpu->cpreg_array_len; i++) { - uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]); - uint64_t v = cpu->cpreg_values[i]; - const ARMCPRegInfo *ri; - - ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); - if (!ri) { - ok = false; - continue; - } - if (ri->type & ARM_CP_NO_RAW) { - continue; - } - /* Write value and confirm it reads back as written - * (to catch read-only registers and partially read-only - * registers where the incoming migration value doesn't match) - */ - write_raw_cp_reg(&cpu->env, ri, v); - if (read_raw_cp_reg(&cpu->env, ri) != v) { - ok = false; - } - } - return ok; -} - -static void add_cpreg_to_list(gpointer key, gpointer opaque) -{ - ARMCPU *cpu = opaque; - uint64_t regidx; - const ARMCPRegInfo *ri; - - regidx = *(uint32_t *)key; - ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); - - if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) { - cpu->cpreg_indexes[cpu->cpreg_array_len] = cpreg_to_kvm_id(regidx); - /* The value array need not be initialized at this point */ - cpu->cpreg_array_len++; - } -} - -static void count_cpreg(gpointer key, gpointer opaque) -{ - ARMCPU *cpu = opaque; - uint64_t regidx; - const ARMCPRegInfo *ri; - - regidx = *(uint32_t *)key; - ri = get_arm_cp_reginfo(cpu->cp_regs, regidx); - - if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) { - cpu->cpreg_array_len++; - } -} - -static gint cpreg_key_compare(gconstpointer a, gconstpointer b) -{ - uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a); - uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b); - - if (aidx > bidx) { - return 1; - } - if (aidx < bidx) { - return -1; - } - return 0; -} - -void init_cpreg_list(ARMCPU *cpu) -{ - /* Initialise the cpreg_tuples[] array based on the cp_regs hash. - * Note that we require cpreg_tuples[] to be sorted by key ID. - */ - GList *keys; - int arraylen; - - keys = g_hash_table_get_keys(cpu->cp_regs); - keys = g_list_sort(keys, cpreg_key_compare); - - cpu->cpreg_array_len = 0; - - g_list_foreach(keys, count_cpreg, cpu); - - arraylen = cpu->cpreg_array_len; - cpu->cpreg_indexes = g_new(uint64_t, arraylen); - cpu->cpreg_values = g_new(uint64_t, arraylen); - cpu->cpreg_vmstate_indexes = g_new(uint64_t, arraylen); - cpu->cpreg_vmstate_values = g_new(uint64_t, arraylen); - cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len; - cpu->cpreg_array_len = 0; - - g_list_foreach(keys, add_cpreg_to_list, cpu); - - assert(cpu->cpreg_array_len == arraylen); - - g_list_free(keys); -} - -/* - * Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but - * they are accessible when EL3 is using AArch64 regardless of EL3.NS. - * - * access_el3_aa32ns: Used to check AArch32 register views. - * access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views. - */ -static CPAccessResult access_el3_aa32ns(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - bool secure = arm_is_secure_below_el3(env); - - assert(!arm_el_is_aa64(env, 3)); - if (secure) { - return CP_ACCESS_TRAP_UNCATEGORIZED; - } - return CP_ACCESS_OK; -} - -static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - if (!arm_el_is_aa64(env, 3)) { - return access_el3_aa32ns(env, ri, isread); - } - return CP_ACCESS_OK; -} - -/* Some secure-only AArch32 registers trap to EL3 if used from - * Secure EL1 (but are just ordinary UNDEF in other non-EL3 contexts). - * Note that an access from Secure EL1 can only happen if EL3 is AArch64. - * We assume that the .access field is set to PL1_RW. - */ -static CPAccessResult access_trap_aa32s_el1(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - if (arm_current_el(env) == 3) { - return CP_ACCESS_OK; - } - if (arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL3; - } - /* This will be EL1 NS and EL2 NS, which just UNDEF */ - return CP_ACCESS_TRAP_UNCATEGORIZED; -} - -/* Check for traps to "powerdown debug" registers, which are controlled - * by MDCR.TDOSA - */ -static CPAccessResult access_tdosa(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - int el = arm_current_el(env); - - if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDOSA) - && !arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL2; - } - if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDOSA)) { - return CP_ACCESS_TRAP_EL3; - } - return CP_ACCESS_OK; -} - -/* Check for traps to "debug ROM" registers, which are controlled - * by MDCR_EL2.TDRA for EL2 but by the more general MDCR_EL3.TDA for EL3. - */ -static CPAccessResult access_tdra(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - int el = arm_current_el(env); - - if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDRA) - && !arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL2; - } - if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) { - return CP_ACCESS_TRAP_EL3; - } - return CP_ACCESS_OK; -} - -/* Check for traps to general debug registers, which are controlled - * by MDCR_EL2.TDA for EL2 and MDCR_EL3.TDA for EL3. - */ -static CPAccessResult access_tda(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - int el = arm_current_el(env); - - if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDA) - && !arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL2; - } - if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) { - return CP_ACCESS_TRAP_EL3; - } - return CP_ACCESS_OK; -} - -/* Check for traps to performance monitor registers, which are controlled - * by MDCR_EL2.TPM for EL2 and MDCR_EL3.TPM for EL3. - */ -static CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - int el = arm_current_el(env); - - if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM) - && !arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL2; - } - if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) { - return CP_ACCESS_TRAP_EL3; - } - return CP_ACCESS_OK; -} - -static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - raw_write(env, ri, value); - tlb_flush(CPU(cpu), 1); /* Flush TLB as domain not tracked in TLB */ -} - -static void fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - if (raw_read(env, ri) != value) { - /* Unlike real hardware the qemu TLB uses virtual addresses, - * not modified virtual addresses, so this causes a TLB flush. - */ - tlb_flush(CPU(cpu), 1); - raw_write(env, ri, value); - } -} - -static void contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - if (raw_read(env, ri) != value && !arm_feature(env, ARM_FEATURE_MPU) - && !extended_addresses_enabled(env)) { - /* For VMSA (when not using the LPAE long descriptor page table - * format) this register includes the ASID, so do a TLB flush. - * For PMSA it is purely a process ID and no action is needed. - */ - tlb_flush(CPU(cpu), 1); - } - raw_write(env, ri, value); -} - -static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate all (TLBIALL) */ - ARMCPU *cpu = arm_env_get_cpu(env); - - tlb_flush(CPU(cpu), 1); -} - -static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */ - ARMCPU *cpu = arm_env_get_cpu(env); - - tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK); -} - -static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate by ASID (TLBIASID) */ - ARMCPU *cpu = arm_env_get_cpu(env); - - tlb_flush(CPU(cpu), value == 0); -} - -static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */ - ARMCPU *cpu = arm_env_get_cpu(env); - - tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK); -} - -/* IS variants of TLB operations must affect all cores */ -static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush(other_cs, 1); - } -} - -static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush(other_cs, value == 0); - } -} - -static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush_page(other_cs, value & TARGET_PAGE_MASK); - } -} - -static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush_page(other_cs, value & TARGET_PAGE_MASK); - } -} - -static const ARMCPRegInfo cp_reginfo[] = { - /* Define the secure and non-secure FCSE identifier CP registers - * separately because there is no secure bank in V8 (no _EL3). This allows - * the secure register to be properly reset and migrated. There is also no - * v8 EL1 version of the register so the non-secure instance stands alone. - */ - { .name = "FCSEIDR(NS)", - .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0, - .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS, - .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_ns), - .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, }, - { .name = "FCSEIDR(S)", - .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0, - .access = PL1_RW, .secure = ARM_CP_SECSTATE_S, - .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_s), - .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, }, - /* Define the secure and non-secure context identifier CP registers - * separately because there is no secure bank in V8 (no _EL3). This allows - * the secure register to be properly reset and migrated. In the - * non-secure case, the 32-bit register will have reset and migration - * disabled during registration as it is handled by the 64-bit instance. - */ - { .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1, - .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS, - .fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]), - .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, }, - { .name = "CONTEXTIDR(S)", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1, - .access = PL1_RW, .secure = ARM_CP_SECSTATE_S, - .fieldoffset = offsetof(CPUARMState, cp15.contextidr_s), - .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo not_v8_cp_reginfo[] = { - /* NB: Some of these registers exist in v8 but with more precise - * definitions that don't use CP_ANY wildcards (mostly in v8_cp_reginfo[]). - */ - /* MMU Domain access control / MPU write buffer control */ - { .name = "DACR", - .cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY, - .access = PL1_RW, .resetvalue = 0, - .writefn = dacr_write, .raw_writefn = raw_write, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s), - offsetoflow32(CPUARMState, cp15.dacr_ns) } }, - /* ARMv7 allocates a range of implementation defined TLB LOCKDOWN regs. - * For v6 and v5, these mappings are overly broad. - */ - { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 0, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 1, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 4, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 8, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP }, - /* Cache maintenance ops; some of this space may be overridden later. */ - { .name = "CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY, - .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W, - .type = ARM_CP_NOP | ARM_CP_OVERRIDE }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo not_v6_cp_reginfo[] = { - /* Not all pre-v6 cores implemented this WFI, so this is slightly - * over-broad. - */ - { .name = "WFI_v5", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_WFI }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo not_v7_cp_reginfo[] = { - /* Standard v6 WFI (also used in some pre-v6 cores); not in v7 (which - * is UNPREDICTABLE; we choose to NOP as most implementations do). - */ - { .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4, - .access = PL1_W, .type = ARM_CP_WFI }, - /* L1 cache lockdown. Not architectural in v6 and earlier but in practice - * implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and - * OMAPCP will override this space. - */ - { .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data), - .resetvalue = 0 }, - { .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn), - .resetvalue = 0 }, - /* v6 doesn't have the cache ID registers but Linux reads them anyway */ - { .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, - .resetvalue = 0 }, - /* We don't implement pre-v7 debug but most CPUs had at least a DBGDIDR; - * implementing it as RAZ means the "debug architecture version" bits - * will read as a reserved value, which should cause Linux to not try - * to use the debug hardware. - */ - { .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - /* MMU TLB control. Note that the wildcarding means we cover not just - * the unified TLB ops but also the dside/iside/inner-shareable variants. - */ - { .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write, - .type = ARM_CP_NO_RAW }, - { .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write, - .type = ARM_CP_NO_RAW }, - { .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write, - .type = ARM_CP_NO_RAW }, - { .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write, - .type = ARM_CP_NO_RAW }, - { .name = "PRRR", .cp = 15, .crn = 10, .crm = 2, - .opc1 = 0, .opc2 = 0, .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "NMRR", .cp = 15, .crn = 10, .crm = 2, - .opc1 = 0, .opc2 = 1, .access = PL1_RW, .type = ARM_CP_NOP }, - REGINFO_SENTINEL -}; - -static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - uint32_t mask = 0; - - /* In ARMv8 most bits of CPACR_EL1 are RES0. */ - if (!arm_feature(env, ARM_FEATURE_V8)) { - /* ARMv7 defines bits for unimplemented coprocessors as RAZ/WI. - * ASEDIS [31] and D32DIS [30] are both UNK/SBZP without VFP. - * TRCDIS [28] is RAZ/WI since we do not implement a trace macrocell. - */ - if (arm_feature(env, ARM_FEATURE_VFP)) { - /* VFP coprocessor: cp10 & cp11 [23:20] */ - mask |= (1 << 31) | (1 << 30) | (0xf << 20); - - if (!arm_feature(env, ARM_FEATURE_NEON)) { - /* ASEDIS [31] bit is RAO/WI */ - value |= (1 << 31); - } - - /* VFPv3 and upwards with NEON implement 32 double precision - * registers (D0-D31). - */ - if (!arm_feature(env, ARM_FEATURE_NEON) || - !arm_feature(env, ARM_FEATURE_VFP3)) { - /* D32DIS [30] is RAO/WI if D16-31 are not implemented. */ - value |= (1 << 30); - } - } - value &= mask; - } - env->cp15.cpacr_el1 = value; -} - -static CPAccessResult cpacr_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (arm_feature(env, ARM_FEATURE_V8)) { - /* Check if CPACR accesses are to be trapped to EL2 */ - if (arm_current_el(env) == 1 && - (env->cp15.cptr_el[2] & CPTR_TCPAC) && !arm_is_secure(env)) { - return CP_ACCESS_TRAP_EL2; - /* Check if CPACR accesses are to be trapped to EL3 */ - } else if (arm_current_el(env) < 3 && - (env->cp15.cptr_el[3] & CPTR_TCPAC)) { - return CP_ACCESS_TRAP_EL3; - } - } - - return CP_ACCESS_OK; -} - -static CPAccessResult cptr_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* Check if CPTR accesses are set to trap to EL3 */ - if (arm_current_el(env) == 2 && (env->cp15.cptr_el[3] & CPTR_TCPAC)) { - return CP_ACCESS_TRAP_EL3; - } - - return CP_ACCESS_OK; -} - -static const ARMCPRegInfo v6_cp_reginfo[] = { - /* prefetch by MVA in v6, NOP in v7 */ - { .name = "MVA_prefetch", - .cp = 15, .crn = 7, .crm = 13, .opc1 = 0, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NOP }, - /* We need to break the TB after ISB to execute self-modifying code - * correctly and also to take any pending interrupts immediately. - * So use arm_cp_write_ignore() function instead of ARM_CP_NOP flag. - */ - { .name = "ISB", .cp = 15, .crn = 7, .crm = 5, .opc1 = 0, .opc2 = 4, - .access = PL0_W, .type = ARM_CP_NO_RAW, .writefn = arm_cp_write_ignore }, - { .name = "DSB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 4, - .access = PL0_W, .type = ARM_CP_NOP }, - { .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5, - .access = PL0_W, .type = ARM_CP_NOP }, - { .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL1_RW, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s), - offsetof(CPUARMState, cp15.ifar_ns) }, - .resetvalue = 0, }, - /* Watchpoint Fault Address Register : should actually only be present - * for 1136, 1176, 11MPCore. - */ - { .name = "WFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0, }, - { .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3, - .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1), - .resetvalue = 0, .writefn = cpacr_write }, - REGINFO_SENTINEL -}; - -static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* Performance monitor registers user accessibility is controlled - * by PMUSERENR. MDCR_EL2.TPM and MDCR_EL3.TPM allow configurable - * trapping to EL2 or EL3 for other accesses. - */ - int el = arm_current_el(env); - - if (el == 0 && !env->cp15.c9_pmuserenr) { - return CP_ACCESS_TRAP; - } - if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM) - && !arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL2; - } - if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) { - return CP_ACCESS_TRAP_EL3; - } - - return CP_ACCESS_OK; -} - -#ifndef CONFIG_USER_ONLY - -static inline bool arm_ccnt_enabled(CPUARMState *env) -{ - /* This does not support checking PMCCFILTR_EL0 register */ - - if (!(env->cp15.c9_pmcr & PMCRE)) { - return false; - } - - return true; -} - -void pmccntr_sync(CPUARMState *env) -{ - uint64_t temp_ticks; - - temp_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), - ARM_CPU_FREQ, NANOSECONDS_PER_SECOND); - - if (env->cp15.c9_pmcr & PMCRD) { - /* Increment once every 64 processor clock cycles */ - temp_ticks /= 64; - } - - if (arm_ccnt_enabled(env)) { - env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt; - } -} - -static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - pmccntr_sync(env); - - if (value & PMCRC) { - /* The counter has been reset */ - env->cp15.c15_ccnt = 0; - } - - /* only the DP, X, D and E bits are writable */ - env->cp15.c9_pmcr &= ~0x39; - env->cp15.c9_pmcr |= (value & 0x39); - - pmccntr_sync(env); -} - -static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - uint64_t total_ticks; - - if (!arm_ccnt_enabled(env)) { - /* Counter is disabled, do not change value */ - return env->cp15.c15_ccnt; - } - - total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), - ARM_CPU_FREQ, NANOSECONDS_PER_SECOND); - - if (env->cp15.c9_pmcr & PMCRD) { - /* Increment once every 64 processor clock cycles */ - total_ticks /= 64; - } - return total_ticks - env->cp15.c15_ccnt; -} - -static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - uint64_t total_ticks; - - if (!arm_ccnt_enabled(env)) { - /* Counter is disabled, set the absolute value */ - env->cp15.c15_ccnt = value; - return; - } - - total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), - ARM_CPU_FREQ, NANOSECONDS_PER_SECOND); - - if (env->cp15.c9_pmcr & PMCRD) { - /* Increment once every 64 processor clock cycles */ - total_ticks /= 64; - } - env->cp15.c15_ccnt = total_ticks - value; -} - -static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - uint64_t cur_val = pmccntr_read(env, NULL); - - pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value)); -} - -#else /* CONFIG_USER_ONLY */ - -void pmccntr_sync(CPUARMState *env) -{ -} - -#endif - -static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - pmccntr_sync(env); - env->cp15.pmccfiltr_el0 = value & 0x7E000000; - pmccntr_sync(env); -} - -static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - value &= (1 << 31); - env->cp15.c9_pmcnten |= value; -} - -static void pmcntenclr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - value &= (1 << 31); - env->cp15.c9_pmcnten &= ~value; -} - -static void pmovsr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c9_pmovsr &= ~value; -} - -static void pmxevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c9_pmxevtyper = value & 0xff; -} - -static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c9_pmuserenr = value & 1; -} - -static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* We have no event counters so only the C bit can be changed */ - value &= (1 << 31); - env->cp15.c9_pminten |= value; -} - -static void pmintenclr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - value &= (1 << 31); - env->cp15.c9_pminten &= ~value; -} - -static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Note that even though the AArch64 view of this register has bits - * [10:0] all RES0 we can only mask the bottom 5, to comply with the - * architectural requirements for bits which are RES0 only in some - * contexts. (ARMv8 would permit us to do no masking at all, but ARMv7 - * requires the bottom five bits to be RAZ/WI because they're UNK/SBZP.) - */ - raw_write(env, ri, value & ~0x1FULL); -} - -static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - /* We only mask off bits that are RES0 both for AArch64 and AArch32. - * For bits that vary between AArch32/64, code needs to check the - * current execution mode before directly using the feature bit. - */ - uint32_t valid_mask = SCR_AARCH64_MASK | SCR_AARCH32_MASK; - - if (!arm_feature(env, ARM_FEATURE_EL2)) { - valid_mask &= ~SCR_HCE; - - /* On ARMv7, SMD (or SCD as it is called in v7) is only - * supported if EL2 exists. The bit is UNK/SBZP when - * EL2 is unavailable. In QEMU ARMv7, we force it to always zero - * when EL2 is unavailable. - * On ARMv8, this bit is always available. - */ - if (arm_feature(env, ARM_FEATURE_V7) && - !arm_feature(env, ARM_FEATURE_V8)) { - valid_mask &= ~SCR_SMD; - } - } - - /* Clear all-context RES0 bits. */ - value &= valid_mask; - raw_write(env, ri, value); -} - -static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - /* Acquire the CSSELR index from the bank corresponding to the CCSIDR - * bank - */ - uint32_t index = A32_BANKED_REG_GET(env, csselr, - ri->secure & ARM_CP_SECSTATE_S); - - return cpu->ccsidr[index]; -} - -static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - raw_write(env, ri, value & 0xf); -} - -static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - CPUState *cs = ENV_GET_CPU(env); - uint64_t ret = 0; - - if (cs->interrupt_request & CPU_INTERRUPT_HARD) { - ret |= CPSR_I; - } - if (cs->interrupt_request & CPU_INTERRUPT_FIQ) { - ret |= CPSR_F; - } - /* External aborts are not possible in QEMU so A bit is always clear */ - return ret; -} - -static const ARMCPRegInfo v7_cp_reginfo[] = { - /* the old v6 WFI, UNPREDICTABLE in v7 but we choose to NOP */ - { .name = "NOP", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4, - .access = PL1_W, .type = ARM_CP_NOP }, - /* Performance monitors are implementation defined in v7, - * but with an ARM recommended set of registers, which we - * follow (although we don't actually implement any counters) - * - * Performance registers fall into three categories: - * (a) always UNDEF in PL0, RW in PL1 (PMINTENSET, PMINTENCLR) - * (b) RO in PL0 (ie UNDEF on write), RW in PL1 (PMUSERENR) - * (c) UNDEF in PL0 if PMUSERENR.EN==0, otherwise accessible (all others) - * For the cases controlled by PMUSERENR we must set .access to PL0_RW - * or PL0_RO as appropriate and then check PMUSERENR in the helper fn. - */ - { .name = "PMCNTENSET", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 1, - .access = PL0_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten), - .writefn = pmcntenset_write, - .accessfn = pmreg_access, - .raw_writefn = raw_write }, - { .name = "PMCNTENSET_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 1, - .access = PL0_RW, .accessfn = pmreg_access, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), .resetvalue = 0, - .writefn = pmcntenset_write, .raw_writefn = raw_write }, - { .name = "PMCNTENCLR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 2, - .access = PL0_RW, - .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten), - .accessfn = pmreg_access, - .writefn = pmcntenclr_write, - .type = ARM_CP_ALIAS }, - { .name = "PMCNTENCLR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 2, - .access = PL0_RW, .accessfn = pmreg_access, - .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), - .writefn = pmcntenclr_write }, - { .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3, - .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr), - .accessfn = pmreg_access, - .writefn = pmovsr_write, - .raw_writefn = raw_write }, - { .name = "PMOVSCLR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 3, - .access = PL0_RW, .accessfn = pmreg_access, - .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr), - .writefn = pmovsr_write, - .raw_writefn = raw_write }, - /* Unimplemented so WI. */ - { .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4, - .access = PL0_W, .accessfn = pmreg_access, .type = ARM_CP_NOP }, - /* Since we don't implement any events, writing to PMSELR is UNPREDICTABLE. - * We choose to RAZ/WI. - */ - { .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5, - .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0, - .accessfn = pmreg_access }, -#ifndef CONFIG_USER_ONLY - { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0, - .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO, - .readfn = pmccntr_read, .writefn = pmccntr_write32, - .accessfn = pmreg_access }, - { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0, - .access = PL0_RW, .accessfn = pmreg_access, - .type = ARM_CP_IO, - .readfn = pmccntr_read, .writefn = pmccntr_write, }, -#endif - { .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7, - .writefn = pmccfiltr_write, - .access = PL0_RW, .accessfn = pmreg_access, - .type = ARM_CP_IO, - .fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0), - .resetvalue = 0, }, - { .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1, - .access = PL0_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmxevtyper), - .accessfn = pmreg_access, .writefn = pmxevtyper_write, - .raw_writefn = raw_write }, - /* Unimplemented, RAZ/WI. */ - { .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2, - .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0, - .accessfn = pmreg_access }, - { .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0, - .access = PL0_R | PL1_RW, .accessfn = access_tpm, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr), - .resetvalue = 0, - .writefn = pmuserenr_write, .raw_writefn = raw_write }, - { .name = "PMUSERENR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 14, .opc2 = 0, - .access = PL0_R | PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr), - .resetvalue = 0, - .writefn = pmuserenr_write, .raw_writefn = raw_write }, - { .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .accessfn = access_tpm, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), - .resetvalue = 0, - .writefn = pmintenset_write, .raw_writefn = raw_write }, - { .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2, - .access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), - .writefn = pmintenclr_write, }, - { .name = "PMINTENCLR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 2, - .access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten), - .writefn = pmintenclr_write }, - { .name = "VBAR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 12, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .writefn = vbar_write, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.vbar_s), - offsetof(CPUARMState, cp15.vbar_ns) }, - .resetvalue = 0 }, - { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0, - .access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_RAW }, - { .name = "CSSELR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0, - .access = PL1_RW, .writefn = csselr_write, .resetvalue = 0, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s), - offsetof(CPUARMState, cp15.csselr_ns) } }, - /* Auxiliary ID register: this actually has an IMPDEF value but for now - * just RAZ for all cores: - */ - { .name = "AIDR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - /* Auxiliary fault status registers: these also are IMPDEF, and we - * choose to RAZ/WI for all cores. - */ - { .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1, - .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - /* MAIR can just read-as-written because we don't implement caches - * and so don't need to care about memory attributes. - */ - { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]), - .resetvalue = 0 }, - { .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0, - .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[3]), - .resetvalue = 0 }, - /* For non-long-descriptor page tables these are PRRR and NMRR; - * regardless they still act as reads-as-written for QEMU. - */ - /* MAIR0/1 are defined separately from their 64-bit counterpart which - * allows them to assign the correct fieldoffset based on the endianness - * handled in the field definitions. - */ - { .name = "MAIR0", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s), - offsetof(CPUARMState, cp15.mair0_ns) }, - .resetfn = arm_cp_reset_ignore }, - { .name = "MAIR1", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s), - offsetof(CPUARMState, cp15.mair1_ns) }, - .resetfn = arm_cp_reset_ignore }, - { .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read }, - /* 32 bit ITLB invalidates */ - { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, - { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, - { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, - /* 32 bit DTLB invalidates */ - { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, - { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, - { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, - /* 32 bit TLB invalidates */ - { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write }, - { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, - { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write }, - { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo v7mp_cp_reginfo[] = { - /* 32 bit TLB invalidates, Inner Shareable */ - { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write }, - { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write }, - { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2, - .type = ARM_CP_NO_RAW, .access = PL1_W, - .writefn = tlbiasid_is_write }, - { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3, - .type = ARM_CP_NO_RAW, .access = PL1_W, - .writefn = tlbimvaa_is_write }, - REGINFO_SENTINEL -}; - -static void teecr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - value &= 1; - env->teecr = value; -} - -static CPAccessResult teehbr_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (arm_current_el(env) == 0 && (env->teecr & 1)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -static const ARMCPRegInfo t2ee_cp_reginfo[] = { - { .name = "TEECR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 6, .opc2 = 0, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, teecr), - .resetvalue = 0, - .writefn = teecr_write }, - { .name = "TEEHBR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 6, .opc2 = 0, - .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, teehbr), - .accessfn = teehbr_access, .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo v6k_cp_reginfo[] = { - { .name = "TPIDR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 2, .crn = 13, .crm = 0, - .access = PL0_RW, - .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[0]), .resetvalue = 0 }, - { .name = "TPIDRURW", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL0_RW, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrurw_s), - offsetoflow32(CPUARMState, cp15.tpidrurw_ns) }, - .resetfn = arm_cp_reset_ignore }, - { .name = "TPIDRRO_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 3, .crn = 13, .crm = 0, - .access = PL0_R|PL1_W, - .fieldoffset = offsetof(CPUARMState, cp15.tpidrro_el[0]), - .resetvalue = 0}, - { .name = "TPIDRURO", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 3, - .access = PL0_R|PL1_W, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidruro_s), - offsetoflow32(CPUARMState, cp15.tpidruro_ns) }, - .resetfn = arm_cp_reset_ignore }, - { .name = "TPIDR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .opc2 = 4, .crn = 13, .crm = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[1]), .resetvalue = 0 }, - { .name = "TPIDRPRW", .opc1 = 0, .cp = 15, .crn = 13, .crm = 0, .opc2 = 4, - .access = PL1_RW, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrprw_s), - offsetoflow32(CPUARMState, cp15.tpidrprw_ns) }, - .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -#ifndef CONFIG_USER_ONLY - -static CPAccessResult gt_cntfrq_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* CNTFRQ: not visible from PL0 if both PL0PCTEN and PL0VCTEN are zero. - * Writable only at the highest implemented exception level. - */ - int el = arm_current_el(env); - - switch (el) { - case 0: - if (!extract32(env->cp15.c14_cntkctl, 0, 2)) { - return CP_ACCESS_TRAP; - } - break; - case 1: - if (!isread && ri->state == ARM_CP_STATE_AA32 && - arm_is_secure_below_el3(env)) { - /* Accesses from 32-bit Secure EL1 UNDEF (*not* trap to EL3!) */ - return CP_ACCESS_TRAP_UNCATEGORIZED; - } - break; - case 2: - case 3: - break; - } - - if (!isread && el < arm_highest_el(env)) { - return CP_ACCESS_TRAP_UNCATEGORIZED; - } - - return CP_ACCESS_OK; -} - -static CPAccessResult gt_counter_access(CPUARMState *env, int timeridx, - bool isread) -{ - unsigned int cur_el = arm_current_el(env); - bool secure = arm_is_secure(env); - - /* CNT[PV]CT: not visible from PL0 if ELO[PV]CTEN is zero */ - if (cur_el == 0 && - !extract32(env->cp15.c14_cntkctl, timeridx, 1)) { - return CP_ACCESS_TRAP; - } - - if (arm_feature(env, ARM_FEATURE_EL2) && - timeridx == GTIMER_PHYS && !secure && cur_el < 2 && - !extract32(env->cp15.cnthctl_el2, 0, 1)) { - return CP_ACCESS_TRAP_EL2; - } - return CP_ACCESS_OK; -} - -static CPAccessResult gt_timer_access(CPUARMState *env, int timeridx, - bool isread) -{ - unsigned int cur_el = arm_current_el(env); - bool secure = arm_is_secure(env); - - /* CNT[PV]_CVAL, CNT[PV]_CTL, CNT[PV]_TVAL: not visible from PL0 if - * EL0[PV]TEN is zero. - */ - if (cur_el == 0 && - !extract32(env->cp15.c14_cntkctl, 9 - timeridx, 1)) { - return CP_ACCESS_TRAP; - } - - if (arm_feature(env, ARM_FEATURE_EL2) && - timeridx == GTIMER_PHYS && !secure && cur_el < 2 && - !extract32(env->cp15.cnthctl_el2, 1, 1)) { - return CP_ACCESS_TRAP_EL2; - } - return CP_ACCESS_OK; -} - -static CPAccessResult gt_pct_access(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - return gt_counter_access(env, GTIMER_PHYS, isread); -} - -static CPAccessResult gt_vct_access(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - return gt_counter_access(env, GTIMER_VIRT, isread); -} - -static CPAccessResult gt_ptimer_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - return gt_timer_access(env, GTIMER_PHYS, isread); -} - -static CPAccessResult gt_vtimer_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - return gt_timer_access(env, GTIMER_VIRT, isread); -} - -static CPAccessResult gt_stimer_access(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - /* The AArch64 register view of the secure physical timer is - * always accessible from EL3, and configurably accessible from - * Secure EL1. - */ - switch (arm_current_el(env)) { - case 1: - if (!arm_is_secure(env)) { - return CP_ACCESS_TRAP; - } - if (!(env->cp15.scr_el3 & SCR_ST)) { - return CP_ACCESS_TRAP_EL3; - } - return CP_ACCESS_OK; - case 0: - case 2: - return CP_ACCESS_TRAP; - case 3: - return CP_ACCESS_OK; - default: - g_assert_not_reached(); - } -} - -static uint64_t gt_get_countervalue(CPUARMState *env) -{ - return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / GTIMER_SCALE; -} - -static void gt_recalc_timer(ARMCPU *cpu, int timeridx) -{ - ARMGenericTimer *gt = &cpu->env.cp15.c14_timer[timeridx]; - - if (gt->ctl & 1) { - /* Timer enabled: calculate and set current ISTATUS, irq, and - * reset timer to when ISTATUS next has to change - */ - uint64_t offset = timeridx == GTIMER_VIRT ? - cpu->env.cp15.cntvoff_el2 : 0; - uint64_t count = gt_get_countervalue(&cpu->env); - /* Note that this must be unsigned 64 bit arithmetic: */ - int istatus = count - offset >= gt->cval; - uint64_t nexttick; - - gt->ctl = deposit32(gt->ctl, 2, 1, istatus); - qemu_set_irq(cpu->gt_timer_outputs[timeridx], - (istatus && !(gt->ctl & 2))); - if (istatus) { - /* Next transition is when count rolls back over to zero */ - nexttick = UINT64_MAX; - } else { - /* Next transition is when we hit cval */ - nexttick = gt->cval + offset; - } - /* Note that the desired next expiry time might be beyond the - * signed-64-bit range of a QEMUTimer -- in this case we just - * set the timer for as far in the future as possible. When the - * timer expires we will reset the timer for any remaining period. - */ - if (nexttick > INT64_MAX / GTIMER_SCALE) { - nexttick = INT64_MAX / GTIMER_SCALE; - } - timer_mod(cpu->gt_timer[timeridx], nexttick); - } else { - /* Timer disabled: ISTATUS and timer output always clear */ - gt->ctl &= ~4; - qemu_set_irq(cpu->gt_timer_outputs[timeridx], 0); - timer_del(cpu->gt_timer[timeridx]); - } -} - -static void gt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri, - int timeridx) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - timer_del(cpu->gt_timer[timeridx]); -} - -static uint64_t gt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_get_countervalue(env); -} - -static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_get_countervalue(env) - env->cp15.cntvoff_el2; -} - -static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, - int timeridx, - uint64_t value) -{ - env->cp15.c14_timer[timeridx].cval = value; - gt_recalc_timer(arm_env_get_cpu(env), timeridx); -} - -static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri, - int timeridx) -{ - uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0; - - return (uint32_t)(env->cp15.c14_timer[timeridx].cval - - (gt_get_countervalue(env) - offset)); -} - -static void gt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, - int timeridx, - uint64_t value) -{ - uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0; - - env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset + - sextract64(value, 0, 32); - gt_recalc_timer(arm_env_get_cpu(env), timeridx); -} - -static void gt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, - int timeridx, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - uint32_t oldval = env->cp15.c14_timer[timeridx].ctl; - - env->cp15.c14_timer[timeridx].ctl = deposit64(oldval, 0, 2, value); - if ((oldval ^ value) & 1) { - /* Enable toggled */ - gt_recalc_timer(cpu, timeridx); - } else if ((oldval ^ value) & 2) { - /* IMASK toggled: don't need to recalculate, - * just set the interrupt line based on ISTATUS - */ - qemu_set_irq(cpu->gt_timer_outputs[timeridx], - (oldval & 4) && !(value & 2)); - } -} - -static void gt_phys_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - gt_timer_reset(env, ri, GTIMER_PHYS); -} - -static void gt_phys_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_cval_write(env, ri, GTIMER_PHYS, value); -} - -static uint64_t gt_phys_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_tval_read(env, ri, GTIMER_PHYS); -} - -static void gt_phys_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_tval_write(env, ri, GTIMER_PHYS, value); -} - -static void gt_phys_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_ctl_write(env, ri, GTIMER_PHYS, value); -} - -static void gt_virt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - gt_timer_reset(env, ri, GTIMER_VIRT); -} - -static void gt_virt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_cval_write(env, ri, GTIMER_VIRT, value); -} - -static uint64_t gt_virt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_tval_read(env, ri, GTIMER_VIRT); -} - -static void gt_virt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_tval_write(env, ri, GTIMER_VIRT, value); -} - -static void gt_virt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_ctl_write(env, ri, GTIMER_VIRT, value); -} - -static void gt_cntvoff_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - raw_write(env, ri, value); - gt_recalc_timer(cpu, GTIMER_VIRT); -} - -static void gt_hyp_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - gt_timer_reset(env, ri, GTIMER_HYP); -} - -static void gt_hyp_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_cval_write(env, ri, GTIMER_HYP, value); -} - -static uint64_t gt_hyp_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_tval_read(env, ri, GTIMER_HYP); -} - -static void gt_hyp_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_tval_write(env, ri, GTIMER_HYP, value); -} - -static void gt_hyp_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_ctl_write(env, ri, GTIMER_HYP, value); -} - -static void gt_sec_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - gt_timer_reset(env, ri, GTIMER_SEC); -} - -static void gt_sec_cval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_cval_write(env, ri, GTIMER_SEC, value); -} - -static uint64_t gt_sec_tval_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return gt_tval_read(env, ri, GTIMER_SEC); -} - -static void gt_sec_tval_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_tval_write(env, ri, GTIMER_SEC, value); -} - -static void gt_sec_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - gt_ctl_write(env, ri, GTIMER_SEC, value); -} - -void arm_gt_ptimer_cb(void *opaque) -{ - ARMCPU *cpu = opaque; - - gt_recalc_timer(cpu, GTIMER_PHYS); -} - -void arm_gt_vtimer_cb(void *opaque) -{ - ARMCPU *cpu = opaque; - - gt_recalc_timer(cpu, GTIMER_VIRT); -} - -void arm_gt_htimer_cb(void *opaque) -{ - ARMCPU *cpu = opaque; - - gt_recalc_timer(cpu, GTIMER_HYP); -} - -void arm_gt_stimer_cb(void *opaque) -{ - ARMCPU *cpu = opaque; - - gt_recalc_timer(cpu, GTIMER_SEC); -} - -static const ARMCPRegInfo generic_timer_cp_reginfo[] = { - /* Note that CNTFRQ is purely reads-as-written for the benefit - * of software; writing it doesn't actually change the timer frequency. - * Our reset value matches the fixed frequency we implement the timer at. - */ - { .name = "CNTFRQ", .cp = 15, .crn = 14, .crm = 0, .opc1 = 0, .opc2 = 0, - .type = ARM_CP_ALIAS, - .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access, - .fieldoffset = offsetoflow32(CPUARMState, cp15.c14_cntfrq), - }, - { .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0, - .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access, - .fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq), - .resetvalue = (1000 * 1000 * 1000) / GTIMER_SCALE, - }, - /* overall control: mostly access permissions */ - { .name = "CNTKCTL", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 14, .crm = 1, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c14_cntkctl), - .resetvalue = 0, - }, - /* per-timer control */ - { .name = "CNTP_CTL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1, - .secure = ARM_CP_SECSTATE_NS, - .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, - .fieldoffset = offsetoflow32(CPUARMState, - cp15.c14_timer[GTIMER_PHYS].ctl), - .writefn = gt_phys_ctl_write, .raw_writefn = raw_write, - }, - { .name = "CNTP_CTL(S)", - .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1, - .secure = ARM_CP_SECSTATE_S, - .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, - .fieldoffset = offsetoflow32(CPUARMState, - cp15.c14_timer[GTIMER_SEC].ctl), - .writefn = gt_sec_ctl_write, .raw_writefn = raw_write, - }, - { .name = "CNTP_CTL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 1, - .type = ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].ctl), - .resetvalue = 0, - .writefn = gt_phys_ctl_write, .raw_writefn = raw_write, - }, - { .name = "CNTV_CTL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 1, - .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R, - .accessfn = gt_vtimer_access, - .fieldoffset = offsetoflow32(CPUARMState, - cp15.c14_timer[GTIMER_VIRT].ctl), - .writefn = gt_virt_ctl_write, .raw_writefn = raw_write, - }, - { .name = "CNTV_CTL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 1, - .type = ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_vtimer_access, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].ctl), - .resetvalue = 0, - .writefn = gt_virt_ctl_write, .raw_writefn = raw_write, - }, - /* TimerValue views: a 32 bit downcounting view of the underlying state */ - { .name = "CNTP_TVAL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0, - .secure = ARM_CP_SECSTATE_NS, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, - .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write, - }, - { .name = "CNTP_TVAL(S)", - .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0, - .secure = ARM_CP_SECSTATE_S, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, - .readfn = gt_sec_tval_read, .writefn = gt_sec_tval_write, - }, - { .name = "CNTP_TVAL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 0, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_ptimer_access, .resetfn = gt_phys_timer_reset, - .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write, - }, - { .name = "CNTV_TVAL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 0, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_vtimer_access, - .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write, - }, - { .name = "CNTV_TVAL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 0, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R, - .accessfn = gt_vtimer_access, .resetfn = gt_virt_timer_reset, - .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write, - }, - /* The counter itself */ - { .name = "CNTPCT", .cp = 15, .crm = 14, .opc1 = 0, - .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO, - .accessfn = gt_pct_access, - .readfn = gt_cnt_read, .resetfn = arm_cp_reset_ignore, - }, - { .name = "CNTPCT_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 1, - .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO, - .accessfn = gt_pct_access, .readfn = gt_cnt_read, - }, - { .name = "CNTVCT", .cp = 15, .crm = 14, .opc1 = 1, - .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO, - .accessfn = gt_vct_access, - .readfn = gt_virt_cnt_read, .resetfn = arm_cp_reset_ignore, - }, - { .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2, - .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO, - .accessfn = gt_vct_access, .readfn = gt_virt_cnt_read, - }, - /* Comparison value, indicating when the timer goes off */ - { .name = "CNTP_CVAL", .cp = 15, .crm = 14, .opc1 = 2, - .secure = ARM_CP_SECSTATE_NS, - .access = PL1_RW | PL0_R, - .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval), - .accessfn = gt_ptimer_access, - .writefn = gt_phys_cval_write, .raw_writefn = raw_write, - }, - { .name = "CNTP_CVAL(S)", .cp = 15, .crm = 14, .opc1 = 2, - .secure = ARM_CP_SECSTATE_S, - .access = PL1_RW | PL0_R, - .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval), - .accessfn = gt_ptimer_access, - .writefn = gt_sec_cval_write, .raw_writefn = raw_write, - }, - { .name = "CNTP_CVAL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 2, - .access = PL1_RW | PL0_R, - .type = ARM_CP_IO, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval), - .resetvalue = 0, .accessfn = gt_ptimer_access, - .writefn = gt_phys_cval_write, .raw_writefn = raw_write, - }, - { .name = "CNTV_CVAL", .cp = 15, .crm = 14, .opc1 = 3, - .access = PL1_RW | PL0_R, - .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval), - .accessfn = gt_vtimer_access, - .writefn = gt_virt_cval_write, .raw_writefn = raw_write, - }, - { .name = "CNTV_CVAL_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 2, - .access = PL1_RW | PL0_R, - .type = ARM_CP_IO, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval), - .resetvalue = 0, .accessfn = gt_vtimer_access, - .writefn = gt_virt_cval_write, .raw_writefn = raw_write, - }, - /* Secure timer -- this is actually restricted to only EL3 - * and configurably Secure-EL1 via the accessfn. - */ - { .name = "CNTPS_TVAL_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 0, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW, - .accessfn = gt_stimer_access, - .readfn = gt_sec_tval_read, - .writefn = gt_sec_tval_write, - .resetfn = gt_sec_timer_reset, - }, - { .name = "CNTPS_CTL_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 1, - .type = ARM_CP_IO, .access = PL1_RW, - .accessfn = gt_stimer_access, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].ctl), - .resetvalue = 0, - .writefn = gt_sec_ctl_write, .raw_writefn = raw_write, - }, - { .name = "CNTPS_CVAL_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 2, - .type = ARM_CP_IO, .access = PL1_RW, - .accessfn = gt_stimer_access, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval), - .writefn = gt_sec_cval_write, .raw_writefn = raw_write, - }, - REGINFO_SENTINEL -}; - -#else -/* In user-mode none of the generic timer registers are accessible, - * and their implementation depends on QEMU_CLOCK_VIRTUAL and qdev gpio outputs, - * so instead just don't register any of them. - */ -static const ARMCPRegInfo generic_timer_cp_reginfo[] = { - REGINFO_SENTINEL -}; - -#endif - -static void par_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - if (arm_feature(env, ARM_FEATURE_LPAE)) { - raw_write(env, ri, value); - } else if (arm_feature(env, ARM_FEATURE_V7)) { - raw_write(env, ri, value & 0xfffff6ff); - } else { - raw_write(env, ri, value & 0xfffff1ff); - } -} - -#ifndef CONFIG_USER_ONLY -/* get_phys_addr() isn't present for user-mode-only targets */ - -static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (ri->opc2 & 4) { - /* The ATS12NSO* operations must trap to EL3 if executed in - * Secure EL1 (which can only happen if EL3 is AArch64). - * They are simply UNDEF if executed from NS EL1. - * They function normally from EL2 or EL3. - */ - if (arm_current_el(env) == 1) { - if (arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_UNCATEGORIZED_EL3; - } - return CP_ACCESS_TRAP_UNCATEGORIZED; - } - } - return CP_ACCESS_OK; -} - -static uint64_t do_ats_write(CPUARMState *env, uint64_t value, - int access_type, ARMMMUIdx mmu_idx) -{ - hwaddr phys_addr; - target_ulong page_size; - int prot; - uint32_t fsr; - bool ret; - uint64_t par64; - MemTxAttrs attrs = {}; - ARMMMUFaultInfo fi = {}; - - ret = get_phys_addr(env, value, access_type, mmu_idx, - &phys_addr, &attrs, &prot, &page_size, &fsr, &fi); - if (extended_addresses_enabled(env)) { - /* fsr is a DFSR/IFSR value for the long descriptor - * translation table format, but with WnR always clear. - * Convert it to a 64-bit PAR. - */ - par64 = (1 << 11); /* LPAE bit always set */ - if (!ret) { - par64 |= phys_addr & ~0xfffULL; - if (!attrs.secure) { - par64 |= (1 << 9); /* NS */ - } - /* We don't set the ATTR or SH fields in the PAR. */ - } else { - par64 |= 1; /* F */ - par64 |= (fsr & 0x3f) << 1; /* FS */ - /* Note that S2WLK and FSTAGE are always zero, because we don't - * implement virtualization and therefore there can't be a stage 2 - * fault. - */ - } - } else { - /* fsr is a DFSR/IFSR value for the short descriptor - * translation table format (with WnR always clear). - * Convert it to a 32-bit PAR. - */ - if (!ret) { - /* We do not set any attribute bits in the PAR */ - if (page_size == (1 << 24) - && arm_feature(env, ARM_FEATURE_V7)) { - par64 = (phys_addr & 0xff000000) | (1 << 1); - } else { - par64 = phys_addr & 0xfffff000; - } - if (!attrs.secure) { - par64 |= (1 << 9); /* NS */ - } - } else { - par64 = ((fsr & (1 << 10)) >> 5) | ((fsr & (1 << 12)) >> 6) | - ((fsr & 0xf) << 1) | 1; - } - } - return par64; -} - -static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - int access_type = ri->opc2 & 1; - uint64_t par64; - ARMMMUIdx mmu_idx; - int el = arm_current_el(env); - bool secure = arm_is_secure_below_el3(env); - - switch (ri->opc2 & 6) { - case 0: - /* stage 1 current state PL1: ATS1CPR, ATS1CPW */ - switch (el) { - case 3: - mmu_idx = ARMMMUIdx_S1E3; - break; - case 2: - mmu_idx = ARMMMUIdx_S1NSE1; - break; - case 1: - mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1; - break; - default: - g_assert_not_reached(); - } - break; - case 2: - /* stage 1 current state PL0: ATS1CUR, ATS1CUW */ - switch (el) { - case 3: - mmu_idx = ARMMMUIdx_S1SE0; - break; - case 2: - mmu_idx = ARMMMUIdx_S1NSE0; - break; - case 1: - mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0; - break; - default: - g_assert_not_reached(); - } - break; - case 4: - /* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */ - mmu_idx = ARMMMUIdx_S12NSE1; - break; - case 6: - /* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */ - mmu_idx = ARMMMUIdx_S12NSE0; - break; - default: - g_assert_not_reached(); - } - - par64 = do_ats_write(env, value, access_type, mmu_idx); - - A32_BANKED_CURRENT_REG_SET(env, par, par64); -} - -static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - int access_type = ri->opc2 & 1; - uint64_t par64; - - par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS); - - A32_BANKED_CURRENT_REG_SET(env, par, par64); -} - -static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - int access_type = ri->opc2 & 1; - ARMMMUIdx mmu_idx; - int secure = arm_is_secure_below_el3(env); - - switch (ri->opc2 & 6) { - case 0: - switch (ri->opc1) { - case 0: /* AT S1E1R, AT S1E1W */ - mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1; - break; - case 4: /* AT S1E2R, AT S1E2W */ - mmu_idx = ARMMMUIdx_S1E2; - break; - case 6: /* AT S1E3R, AT S1E3W */ - mmu_idx = ARMMMUIdx_S1E3; - break; - default: - g_assert_not_reached(); - } - break; - case 2: /* AT S1E0R, AT S1E0W */ - mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0; - break; - case 4: /* AT S12E1R, AT S12E1W */ - mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1; - break; - case 6: /* AT S12E0R, AT S12E0W */ - mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0; - break; - default: - g_assert_not_reached(); - } - - env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx); -} -#endif - -static const ARMCPRegInfo vapa_cp_reginfo[] = { - { .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .resetvalue = 0, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s), - offsetoflow32(CPUARMState, cp15.par_ns) }, - .writefn = par_write }, -#ifndef CONFIG_USER_ONLY - /* This underdecoding is safe because the reginfo is NO_RAW. */ - { .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_W, .accessfn = ats_access, - .writefn = ats_write, .type = ARM_CP_NO_RAW }, -#endif - REGINFO_SENTINEL -}; - -/* Return basic MPU access permission bits. */ -static uint32_t simple_mpu_ap_bits(uint32_t val) -{ - uint32_t ret; - uint32_t mask; - int i; - ret = 0; - mask = 3; - for (i = 0; i < 16; i += 2) { - ret |= (val >> i) & mask; - mask <<= 2; - } - return ret; -} - -/* Pad basic MPU access permission bits to extended format. */ -static uint32_t extended_mpu_ap_bits(uint32_t val) -{ - uint32_t ret; - uint32_t mask; - int i; - ret = 0; - mask = 3; - for (i = 0; i < 16; i += 2) { - ret |= (val & mask) << i; - mask <<= 2; - } - return ret; -} - -static void pmsav5_data_ap_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.pmsav5_data_ap = extended_mpu_ap_bits(value); -} - -static uint64_t pmsav5_data_ap_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return simple_mpu_ap_bits(env->cp15.pmsav5_data_ap); -} - -static void pmsav5_insn_ap_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.pmsav5_insn_ap = extended_mpu_ap_bits(value); -} - -static uint64_t pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return simple_mpu_ap_bits(env->cp15.pmsav5_insn_ap); -} - -static uint64_t pmsav7_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri); - - if (!u32p) { - return 0; - } - - u32p += env->cp15.c6_rgnr; - return *u32p; -} - -static void pmsav7_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri); - - if (!u32p) { - return; - } - - u32p += env->cp15.c6_rgnr; - tlb_flush(CPU(cpu), 1); /* Mappings may have changed - purge! */ - *u32p = value; -} - -static void pmsav7_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri); - - if (!u32p) { - return; - } - - memset(u32p, 0, sizeof(*u32p) * cpu->pmsav7_dregion); -} - -static void pmsav7_rgnr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - uint32_t nrgs = cpu->pmsav7_dregion; - - if (value >= nrgs) { - qemu_log_mask(LOG_GUEST_ERROR, - "PMSAv7 RGNR write >= # supported regions, %" PRIu32 - " > %" PRIu32 "\n", (uint32_t)value, nrgs); - return; - } - - raw_write(env, ri, value); -} - -static const ARMCPRegInfo pmsav7_cp_reginfo[] = { - { .name = "DRBAR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_NO_RAW, - .fieldoffset = offsetof(CPUARMState, pmsav7.drbar), - .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset }, - { .name = "DRSR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 2, - .access = PL1_RW, .type = ARM_CP_NO_RAW, - .fieldoffset = offsetof(CPUARMState, pmsav7.drsr), - .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset }, - { .name = "DRACR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 4, - .access = PL1_RW, .type = ARM_CP_NO_RAW, - .fieldoffset = offsetof(CPUARMState, pmsav7.dracr), - .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset }, - { .name = "RGNR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 2, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c6_rgnr), - .writefn = pmsav7_rgnr_write }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo pmsav5_cp_reginfo[] = { - { .name = "DATA_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap), - .readfn = pmsav5_data_ap_read, .writefn = pmsav5_data_ap_write, }, - { .name = "INSN_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap), - .readfn = pmsav5_insn_ap_read, .writefn = pmsav5_insn_ap_write, }, - { .name = "DATA_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap), - .resetvalue = 0, }, - { .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap), - .resetvalue = 0, }, - { .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, }, - { .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, }, - /* Protection region base and size registers */ - { .name = "946_PRBS0", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[0]) }, - { .name = "946_PRBS1", .cp = 15, .crn = 6, .crm = 1, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[1]) }, - { .name = "946_PRBS2", .cp = 15, .crn = 6, .crm = 2, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[2]) }, - { .name = "946_PRBS3", .cp = 15, .crn = 6, .crm = 3, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[3]) }, - { .name = "946_PRBS4", .cp = 15, .crn = 6, .crm = 4, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[4]) }, - { .name = "946_PRBS5", .cp = 15, .crn = 6, .crm = 5, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[5]) }, - { .name = "946_PRBS6", .cp = 15, .crn = 6, .crm = 6, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[6]) }, - { .name = "946_PRBS7", .cp = 15, .crn = 6, .crm = 7, .opc1 = 0, - .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.c6_region[7]) }, - REGINFO_SENTINEL -}; - -static void vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - TCR *tcr = raw_ptr(env, ri); - int maskshift = extract32(value, 0, 3); - - if (!arm_feature(env, ARM_FEATURE_V8)) { - if (arm_feature(env, ARM_FEATURE_LPAE) && (value & TTBCR_EAE)) { - /* Pre ARMv8 bits [21:19], [15:14] and [6:3] are UNK/SBZP when - * using Long-desciptor translation table format */ - value &= ~((7 << 19) | (3 << 14) | (0xf << 3)); - } else if (arm_feature(env, ARM_FEATURE_EL3)) { - /* In an implementation that includes the Security Extensions - * TTBCR has additional fields PD0 [4] and PD1 [5] for - * Short-descriptor translation table format. - */ - value &= TTBCR_PD1 | TTBCR_PD0 | TTBCR_N; - } else { - value &= TTBCR_N; - } - } - - /* Update the masks corresponding to the TCR bank being written - * Note that we always calculate mask and base_mask, but - * they are only used for short-descriptor tables (ie if EAE is 0); - * for long-descriptor tables the TCR fields are used differently - * and the mask and base_mask values are meaningless. - */ - tcr->raw_tcr = value; - tcr->mask = ~(((uint32_t)0xffffffffu) >> maskshift); - tcr->base_mask = ~((uint32_t)0x3fffu >> maskshift); -} - -static void vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - if (arm_feature(env, ARM_FEATURE_LPAE)) { - /* With LPAE the TTBCR could result in a change of ASID - * via the TTBCR.A1 bit, so do a TLB flush. - */ - tlb_flush(CPU(cpu), 1); - } - vmsa_ttbcr_raw_write(env, ri, value); -} - -static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri) -{ - TCR *tcr = raw_ptr(env, ri); - - /* Reset both the TCR as well as the masks corresponding to the bank of - * the TCR being reset. - */ - tcr->raw_tcr = 0; - tcr->mask = 0; - tcr->base_mask = 0xffffc000u; -} - -static void vmsa_tcr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - TCR *tcr = raw_ptr(env, ri); - - /* For AArch64 the A1 bit could result in a change of ASID, so TLB flush. */ - tlb_flush(CPU(cpu), 1); - tcr->raw_tcr = value; -} - -static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* 64 bit accesses to the TTBRs can change the ASID and so we - * must flush the TLB. - */ - if (cpreg_field_is_64bit(ri)) { - ARMCPU *cpu = arm_env_get_cpu(env); - - tlb_flush(CPU(cpu), 1); - } - raw_write(env, ri, value); -} - -static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - - /* Accesses to VTTBR may change the VMID so we must flush the TLB. */ - if (raw_read(env, ri) != value) { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, - ARMMMUIdx_S2NS, -1); - raw_write(env, ri, value); - } -} - -static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = { - { .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_ALIAS, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dfsr_s), - offsetoflow32(CPUARMState, cp15.dfsr_ns) }, }, - { .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .resetvalue = 0, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.ifsr_s), - offsetoflow32(CPUARMState, cp15.ifsr_ns) } }, - { .name = "DFAR", .cp = 15, .opc1 = 0, .crn = 6, .crm = 0, .opc2 = 0, - .access = PL1_RW, .resetvalue = 0, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.dfar_s), - offsetof(CPUARMState, cp15.dfar_ns) } }, - { .name = "FAR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]), - .resetvalue = 0, }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo vmsa_cp_reginfo[] = { - { .name = "ESR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .crn = 5, .crm = 2, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, }, - { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0, - .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s), - offsetof(CPUARMState, cp15.ttbr0_ns) } }, - { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1, - .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s), - offsetof(CPUARMState, cp15.ttbr1_ns) } }, - { .name = "TCR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL1_RW, .writefn = vmsa_tcr_el1_write, - .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write, - .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[1]) }, - { .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL1_RW, .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write, - .raw_writefn = vmsa_ttbcr_raw_write, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tcr_el[3]), - offsetoflow32(CPUARMState, cp15.tcr_el[1])} }, - REGINFO_SENTINEL -}; - -static void omap_ticonfig_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c15_ticonfig = value & 0xe7; - /* The OS_TYPE bit in this register changes the reported CPUID! */ - env->cp15.c0_cpuid = (value & (1 << 5)) ? - ARM_CPUID_TI915T : ARM_CPUID_TI925T; -} - -static void omap_threadid_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c15_threadid = value & 0xffff; -} - -static void omap_wfi_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Wait-for-interrupt (deprecated) */ - cpu_interrupt(CPU(arm_env_get_cpu(env)), CPU_INTERRUPT_HALT); -} - -static void omap_cachemaint_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* On OMAP there are registers indicating the max/min index of dcache lines - * containing a dirty line; cache flush operations have to reset these. - */ - env->cp15.c15_i_max = 0x000; - env->cp15.c15_i_min = 0xff0; -} - -static const ARMCPRegInfo omap_cp_reginfo[] = { - { .name = "DFSR", .cp = 15, .crn = 5, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_OVERRIDE, - .fieldoffset = offsetoflow32(CPUARMState, cp15.esr_el[1]), - .resetvalue = 0, }, - { .name = "", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "TICONFIG", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c15_ticonfig), .resetvalue = 0, - .writefn = omap_ticonfig_write }, - { .name = "IMAX", .cp = 15, .crn = 15, .crm = 2, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c15_i_max), .resetvalue = 0, }, - { .name = "IMIN", .cp = 15, .crn = 15, .crm = 3, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .resetvalue = 0xff0, - .fieldoffset = offsetof(CPUARMState, cp15.c15_i_min) }, - { .name = "THREADID", .cp = 15, .crn = 15, .crm = 4, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c15_threadid), .resetvalue = 0, - .writefn = omap_threadid_write }, - { .name = "TI925T_STATUS", .cp = 15, .crn = 15, - .crm = 8, .opc1 = 0, .opc2 = 0, .access = PL1_RW, - .type = ARM_CP_NO_RAW, - .readfn = arm_cp_read_zero, .writefn = omap_wfi_write, }, - /* TODO: Peripheral port remap register: - * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt controller - * base address at $rn & ~0xfff and map size of 0x200 << ($rn & 0xfff), - * when MMU is off. - */ - { .name = "OMAP_CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY, - .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W, - .type = ARM_CP_OVERRIDE | ARM_CP_NO_RAW, - .writefn = omap_cachemaint_write }, - { .name = "C9", .cp = 15, .crn = 9, - .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, - .type = ARM_CP_CONST | ARM_CP_OVERRIDE, .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -static void xscale_cpar_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.c15_cpar = value & 0x3fff; -} - -static const ARMCPRegInfo xscale_cp_reginfo[] = { - { .name = "XSCALE_CPAR", - .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c15_cpar), .resetvalue = 0, - .writefn = xscale_cpar_write, }, - { .name = "XSCALE_AUXCR", - .cp = 15, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 1, .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c1_xscaleauxcr), - .resetvalue = 0, }, - /* XScale specific cache-lockdown: since we have no cache we NOP these - * and hope the guest does not really rely on cache behaviour. - */ - { .name = "XSCALE_LOCK_ICACHE_LINE", - .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "XSCALE_UNLOCK_ICACHE", - .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "XSCALE_DCACHE_LOCK", - .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_NOP }, - { .name = "XSCALE_UNLOCK_DCACHE", - .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NOP }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo dummy_c15_cp_reginfo[] = { - /* RAZ/WI the whole crn=15 space, when we don't have a more specific - * implementation of this implementation-defined space. - * Ideally this should eventually disappear in favour of actually - * implementing the correct behaviour for all cores. - */ - { .name = "C15_IMPDEF", .cp = 15, .crn = 15, - .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, - .access = PL1_RW, - .type = ARM_CP_CONST | ARM_CP_NO_RAW | ARM_CP_OVERRIDE, - .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo cache_dirty_status_cp_reginfo[] = { - /* Cache status: RAZ because we have no cache so it's always clean */ - { .name = "CDSR", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, - .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo cache_block_ops_cp_reginfo[] = { - /* We never have a a block transfer operation in progress */ - { .name = "BXSR", .cp = 15, .crn = 7, .crm = 12, .opc1 = 0, .opc2 = 4, - .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, - .resetvalue = 0 }, - /* The cache ops themselves: these all NOP for QEMU */ - { .name = "IICR", .cp = 15, .crm = 5, .opc1 = 0, - .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - { .name = "IDCR", .cp = 15, .crm = 6, .opc1 = 0, - .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - { .name = "CDCR", .cp = 15, .crm = 12, .opc1 = 0, - .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - { .name = "PIR", .cp = 15, .crm = 12, .opc1 = 1, - .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - { .name = "PDR", .cp = 15, .crm = 12, .opc1 = 2, - .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - { .name = "CIDCR", .cp = 15, .crm = 14, .opc1 = 0, - .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo cache_test_clean_cp_reginfo[] = { - /* The cache test-and-clean instructions always return (1 << 30) - * to indicate that there are no dirty cache lines. - */ - { .name = "TC_DCACHE", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 3, - .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, - .resetvalue = (1 << 30) }, - { .name = "TCI_DCACHE", .cp = 15, .crn = 7, .crm = 14, .opc1 = 0, .opc2 = 3, - .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW, - .resetvalue = (1 << 30) }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo strongarm_cp_reginfo[] = { - /* Ignore ReadBuffer accesses */ - { .name = "C9_READBUFFER", .cp = 15, .crn = 9, - .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, - .access = PL1_RW, .resetvalue = 0, - .type = ARM_CP_CONST | ARM_CP_OVERRIDE | ARM_CP_NO_RAW }, - REGINFO_SENTINEL -}; - -static uint64_t midr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - unsigned int cur_el = arm_current_el(env); - bool secure = arm_is_secure(env); - - if (arm_feature(&cpu->env, ARM_FEATURE_EL2) && !secure && cur_el == 1) { - return env->cp15.vpidr_el2; - } - return raw_read(env, ri); -} - -static uint64_t mpidr_read_val(CPUARMState *env) -{ - ARMCPU *cpu = ARM_CPU(arm_env_get_cpu(env)); - uint64_t mpidr = cpu->mp_affinity; - - if (arm_feature(env, ARM_FEATURE_V7MP)) { - mpidr |= (1U << 31); - /* Cores which are uniprocessor (non-coherent) - * but still implement the MP extensions set - * bit 30. (For instance, Cortex-R5). - */ - if (cpu->mp_is_up) { - mpidr |= (1u << 30); - } - } - return mpidr; -} - -static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - unsigned int cur_el = arm_current_el(env); - bool secure = arm_is_secure(env); - - if (arm_feature(env, ARM_FEATURE_EL2) && !secure && cur_el == 1) { - return env->cp15.vmpidr_el2; - } - return mpidr_read_val(env); -} - -static const ARMCPRegInfo mpidr_cp_reginfo[] = { - { .name = "MPIDR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5, - .access = PL1_R, .readfn = mpidr_read, .type = ARM_CP_NO_RAW }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo lpae_cp_reginfo[] = { - /* NOP AMAIR0/1 */ - { .name = "AMAIR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 0, - .access = PL1_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - /* AMAIR1 is mapped to AMAIR_EL1[63:32] */ - { .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1, - .access = PL1_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0, - .access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s), - offsetof(CPUARMState, cp15.par_ns)} }, - { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0, - .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s), - offsetof(CPUARMState, cp15.ttbr0_ns) }, - .writefn = vmsa_ttbr_write, }, - { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1, - .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s), - offsetof(CPUARMState, cp15.ttbr1_ns) }, - .writefn = vmsa_ttbr_write, }, - REGINFO_SENTINEL -}; - -static uint64_t aa64_fpcr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return vfp_get_fpcr(env); -} - -static void aa64_fpcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - vfp_set_fpcr(env, value); -} - -static uint64_t aa64_fpsr_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return vfp_get_fpsr(env); -} - -static void aa64_fpsr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - vfp_set_fpsr(env, value); -} - -static CPAccessResult aa64_daif_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UMA)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -static void aa64_daif_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->daif = value & PSTATE_DAIF; -} - -static CPAccessResult aa64_cacheop_access(CPUARMState *env, - const ARMCPRegInfo *ri, - bool isread) -{ - /* Cache invalidate/clean: NOP, but EL0 must UNDEF unless - * SCTLR_EL1.UCI is set. - */ - if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCI)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -/* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions - * Page D4-1736 (DDI0487A.b) - */ - -static void tlbi_aa64_vmalle1_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - - if (arm_is_secure_below_el3(env)) { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1); - } else { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, -1); - } -} - -static void tlbi_aa64_vmalle1is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - bool sec = arm_is_secure_below_el3(env); - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - if (sec) { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1); - } else { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1, - ARMMMUIdx_S12NSE0, -1); - } - } -} - -static void tlbi_aa64_alle1_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Note that the 'ALL' scope must invalidate both stage 1 and - * stage 2 translations, whereas most other scopes only invalidate - * stage 1 translations. - */ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - - if (arm_is_secure_below_el3(env)) { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1); - } else { - if (arm_feature(env, ARM_FEATURE_EL2)) { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, - ARMMMUIdx_S2NS, -1); - } else { - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, -1); - } - } -} - -static void tlbi_aa64_alle2_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1E2, -1); -} - -static void tlbi_aa64_alle3_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - - tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1E3, -1); -} - -static void tlbi_aa64_alle1is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Note that the 'ALL' scope must invalidate both stage 1 and - * stage 2 translations, whereas most other scopes only invalidate - * stage 1 translations. - */ - bool sec = arm_is_secure_below_el3(env); - bool has_el2 = arm_feature(env, ARM_FEATURE_EL2); - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - if (sec) { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1); - } else if (has_el2) { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1, - ARMMMUIdx_S12NSE0, ARMMMUIdx_S2NS, -1); - } else { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1, - ARMMMUIdx_S12NSE0, -1); - } - } -} - -static void tlbi_aa64_alle2is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1E2, -1); - } -} - -static void tlbi_aa64_alle3is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - - CPU_FOREACH(other_cs) { - tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1E3, -1); - } -} - -static void tlbi_aa64_vae1_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate by VA, EL1&0 (AArch64 version). - * Currently handles all of VAE1, VAAE1, VAALE1 and VALE1, - * since we don't support flush-for-specific-ASID-only or - * flush-last-level-only. - */ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - if (arm_is_secure_below_el3(env)) { - tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1SE1, - ARMMMUIdx_S1SE0, -1); - } else { - tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S12NSE1, - ARMMMUIdx_S12NSE0, -1); - } -} - -static void tlbi_aa64_vae2_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate by VA, EL2 - * Currently handles both VAE2 and VALE2, since we don't support - * flush-last-level-only. - */ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1E2, -1); -} - -static void tlbi_aa64_vae3_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate by VA, EL3 - * Currently handles both VAE3 and VALE3, since we don't support - * flush-last-level-only. - */ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1E3, -1); -} - -static void tlbi_aa64_vae1is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - bool sec = arm_is_secure_below_el3(env); - CPUState *other_cs; - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - CPU_FOREACH(other_cs) { - if (sec) { - tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1SE1, - ARMMMUIdx_S1SE0, -1); - } else { - tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S12NSE1, - ARMMMUIdx_S12NSE0, -1); - } - } -} - -static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - CPU_FOREACH(other_cs) { - tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1E2, -1); - } -} - -static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - uint64_t pageaddr = sextract64(value << 12, 0, 56); - - CPU_FOREACH(other_cs) { - tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1E3, -1); - } -} - -static void tlbi_aa64_ipas2e1_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Invalidate by IPA. This has to invalidate any structures that - * contain only stage 2 translation information, but does not need - * to apply to structures that contain combined stage 1 and stage 2 - * translation information. - * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero. - */ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - uint64_t pageaddr; - - if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { - return; - } - - pageaddr = sextract64(value << 12, 0, 48); - - tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S2NS, -1); -} - -static void tlbi_aa64_ipas2e1is_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - CPUState *other_cs; - uint64_t pageaddr; - - if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) { - return; - } - - pageaddr = sextract64(value << 12, 0, 48); - - CPU_FOREACH(other_cs) { - tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S2NS, -1); - } -} - -static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* We don't implement EL2, so the only control on DC ZVA is the - * bit in the SCTLR which can prohibit access for EL0. - */ - if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZE)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -static uint64_t aa64_dczid_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int dzp_bit = 1 << 4; - - /* DZP indicates whether DC ZVA access is allowed */ - if (aa64_zva_access(env, NULL, false) == CP_ACCESS_OK) { - dzp_bit = 0; - } - return cpu->dcz_blocksize | dzp_bit; -} - -static CPAccessResult sp_el0_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if (!(env->pstate & PSTATE_SP)) { - /* Access to SP_EL0 is undefined if it's being used as - * the stack pointer. - */ - return CP_ACCESS_TRAP_UNCATEGORIZED; - } - return CP_ACCESS_OK; -} - -static uint64_t spsel_read(CPUARMState *env, const ARMCPRegInfo *ri) -{ - return env->pstate & PSTATE_SP; -} - -static void spsel_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t val) -{ - update_spsel(env, val); -} - -static void sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - if (raw_read(env, ri) == value) { - /* Skip the TLB flush if nothing actually changed; Linux likes - * to do a lot of pointless SCTLR writes. - */ - return; - } - - raw_write(env, ri, value); - /* ??? Lots of these bits are not implemented. */ - /* This may enable/disable the MMU, so do a TLB flush. */ - tlb_flush(CPU(cpu), 1); -} - -static CPAccessResult fpexc32_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - if ((env->cp15.cptr_el[2] & CPTR_TFP) && arm_current_el(env) == 2) { - return CP_ACCESS_TRAP_FP_EL2; - } - if (env->cp15.cptr_el[3] & CPTR_TFP) { - return CP_ACCESS_TRAP_FP_EL3; - } - return CP_ACCESS_OK; -} - -static void sdcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - env->cp15.mdcr_el3 = value & SDCR_VALID_MASK; -} - -static const ARMCPRegInfo v8_cp_reginfo[] = { - /* Minimal set of EL0-visible registers. This will need to be expanded - * significantly for system emulation of AArch64 CPUs. - */ - { .name = "NZCV", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 2, - .access = PL0_RW, .type = ARM_CP_NZCV }, - { .name = "DAIF", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 2, - .type = ARM_CP_NO_RAW, - .access = PL0_RW, .accessfn = aa64_daif_access, - .fieldoffset = offsetof(CPUARMState, daif), - .writefn = aa64_daif_write, .resetfn = arm_cp_reset_ignore }, - { .name = "FPCR", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 4, - .access = PL0_RW, .readfn = aa64_fpcr_read, .writefn = aa64_fpcr_write }, - { .name = "FPSR", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 4, - .access = PL0_RW, .readfn = aa64_fpsr_read, .writefn = aa64_fpsr_write }, - { .name = "DCZID_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 7, .crn = 0, .crm = 0, - .access = PL0_R, .type = ARM_CP_NO_RAW, - .readfn = aa64_dczid_read }, - { .name = "DC_ZVA", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 4, .opc2 = 1, - .access = PL0_W, .type = ARM_CP_DC_ZVA, -#ifndef CONFIG_USER_ONLY - /* Avoid overhead of an access check that always passes in user-mode */ - .accessfn = aa64_zva_access, -#endif - }, - { .name = "CURRENTEL", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .opc2 = 2, .crn = 4, .crm = 2, - .access = PL1_R, .type = ARM_CP_CURRENTEL }, - /* Cache ops: all NOPs since we don't emulate caches */ - { .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "IC_IALLU", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "IC_IVAU", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1, - .access = PL0_W, .type = ARM_CP_NOP, - .accessfn = aa64_cacheop_access }, - { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "DC_ISW", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "DC_CVAC", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 10, .opc2 = 1, - .access = PL0_W, .type = ARM_CP_NOP, - .accessfn = aa64_cacheop_access }, - { .name = "DC_CSW", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NOP }, - { .name = "DC_CVAU", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1, - .access = PL0_W, .type = ARM_CP_NOP, - .accessfn = aa64_cacheop_access }, - { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1, - .access = PL0_W, .type = ARM_CP_NOP, - .accessfn = aa64_cacheop_access }, - { .name = "DC_CISW", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NOP }, - /* TLBI operations */ - { .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vmalle1is_write }, - { .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1is_write }, - { .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vmalle1is_write }, - { .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1is_write }, - { .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1is_write }, - { .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1is_write }, - { .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vmalle1_write }, - { .name = "TLBI_VAE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1_write }, - { .name = "TLBI_ASIDE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vmalle1_write }, - { .name = "TLBI_VAAE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1_write }, - { .name = "TLBI_VALE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1_write }, - { .name = "TLBI_VAALE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae1_write }, - { .name = "TLBI_IPAS2E1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_ipas2e1is_write }, - { .name = "TLBI_IPAS2LE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_ipas2e1is_write }, - { .name = "TLBI_ALLE1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle1is_write }, - { .name = "TLBI_VMALLS12E1IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 6, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle1is_write }, - { .name = "TLBI_IPAS2E1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_ipas2e1_write }, - { .name = "TLBI_IPAS2LE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_ipas2e1_write }, - { .name = "TLBI_ALLE1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle1_write }, - { .name = "TLBI_VMALLS12E1", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 6, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle1is_write }, -#ifndef CONFIG_USER_ONLY - /* 64 bit address translation operations */ - { .name = "AT_S1E1R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 0, - .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S1E1W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 1, - .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S1E0R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 2, - .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3, - .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S12E1R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 4, - .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S12E1W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 5, - .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S12E0R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 6, - .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S12E0W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 7, - .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - /* AT S1E2* are elsewhere as they UNDEF from EL3 if EL2 is not present */ - { .name = "AT_S1E3R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 0, - .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S1E3W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 1, - .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "PAR_EL1", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 0, .crn = 7, .crm = 4, .opc2 = 0, - .access = PL1_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.par_el[1]), - .writefn = par_write }, -#endif - /* TLB invalidate last level of translation table walk */ - { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write }, - { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7, - .type = ARM_CP_NO_RAW, .access = PL1_W, - .writefn = tlbimvaa_is_write }, - { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write }, - { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7, - .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write }, - /* 32 bit cache operations */ - { .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCCMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 1, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1, - .type = ARM_CP_NOP, .access = PL1_W }, - { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2, - .type = ARM_CP_NOP, .access = PL1_W }, - /* MMU Domain access control / MPU write buffer control */ - { .name = "DACR", .cp = 15, .opc1 = 0, .crn = 3, .crm = 0, .opc2 = 0, - .access = PL1_RW, .resetvalue = 0, - .writefn = dacr_write, .raw_writefn = raw_write, - .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s), - offsetoflow32(CPUARMState, cp15.dacr_ns) } }, - { .name = "ELR_EL1", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 1, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, elr_el[1]) }, - { .name = "SPSR_EL1", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 0, - .access = PL1_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_SVC]) }, - /* We rely on the access checks not allowing the guest to write to the - * state field when SPSel indicates that it's being used as the stack - * pointer. - */ - { .name = "SP_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 1, .opc2 = 0, - .access = PL1_RW, .accessfn = sp_el0_access, - .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, sp_el[0]) }, - { .name = "SP_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 1, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, sp_el[1]) }, - { .name = "SPSel", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 0, - .type = ARM_CP_NO_RAW, - .access = PL1_RW, .readfn = spsel_read, .writefn = spsel_write }, - { .name = "FPEXC32_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 3, .opc2 = 0, - .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, vfp.xregs[ARM_VFP_FPEXC]), - .access = PL2_RW, .accessfn = fpexc32_access }, - { .name = "DACR32_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 3, .crm = 0, .opc2 = 0, - .access = PL2_RW, .resetvalue = 0, - .writefn = dacr_write, .raw_writefn = raw_write, - .fieldoffset = offsetof(CPUARMState, cp15.dacr32_el2) }, - { .name = "IFSR32_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 0, .opc2 = 1, - .access = PL2_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.ifsr32_el2) }, - { .name = "SPSR_IRQ", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 0, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_IRQ]) }, - { .name = "SPSR_ABT", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 1, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_ABT]) }, - { .name = "SPSR_UND", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 2, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_UND]) }, - { .name = "SPSR_FIQ", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 3, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_FIQ]) }, - { .name = "MDCR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 3, .opc2 = 1, - .resetvalue = 0, - .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el3) }, - { .name = "SDCR", .type = ARM_CP_ALIAS, - .cp = 15, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 1, - .access = PL1_RW, .accessfn = access_trap_aa32s_el1, - .writefn = sdcr_write, - .fieldoffset = offsetoflow32(CPUARMState, cp15.mdcr_el3) }, - REGINFO_SENTINEL -}; - -/* Used to describe the behaviour of EL2 regs when EL2 does not exist. */ -static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = { - { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0, - .access = PL2_RW, - .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore }, - { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_NO_RAW, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0, - .access = PL2_RW, - .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore }, - { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, - .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, - .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "VTCR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, - .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, - .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "VTTBR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 6, .crm = 2, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 }, - { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2, - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14, - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14, - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1, - .access = PL2_RW, .accessfn = access_tda, - .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "HPFAR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, - .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, - .type = ARM_CP_CONST, .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - uint64_t valid_mask = HCR_MASK; - - if (arm_feature(env, ARM_FEATURE_EL3)) { - valid_mask &= ~HCR_HCD; - } else { - valid_mask &= ~HCR_TSC; - } - - /* Clear RES0 bits. */ - value &= valid_mask; - - /* These bits change the MMU setup: - * HCR_VM enables stage 2 translation - * HCR_PTW forbids certain page-table setups - * HCR_DC Disables stage1 and enables stage2 translation - */ - if ((raw_read(env, ri) ^ value) & (HCR_VM | HCR_PTW | HCR_DC)) { - tlb_flush(CPU(cpu), 1); - } - raw_write(env, ri, value); -} - -static const ARMCPRegInfo el2_cp_reginfo[] = { - { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0, - .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.hcr_el2), - .writefn = hcr_write }, - { .name = "ELR_EL2", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 1, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, elr_el[2]) }, - { .name = "ESR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 2, .opc2 = 0, - .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[2]) }, - { .name = "FAR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 0, - .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[2]) }, - { .name = "SPSR_EL2", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 0, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_HYP]) }, - { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0, - .access = PL2_RW, .writefn = vbar_write, - .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[2]), - .resetvalue = 0 }, - { .name = "SP_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 1, .opc2 = 0, - .access = PL3_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, sp_el[2]) }, - { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL2_RW, .accessfn = cptr_access, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]) }, - { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0, - .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[2]), - .resetvalue = 0 }, - { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, - .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_ALIAS, - .fieldoffset = offsetofhigh32(CPUARMState, cp15.mair_el[2]) }, - { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - /* HAMAIR1 is mapped to AMAIR_EL2[63:32] */ - { .name = "HMAIR1", .state = ARM_CP_STATE_AA32, - .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2, - .access = PL2_RW, .writefn = vmsa_tcr_el1_write, - .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write, - .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[2]) }, - { .name = "VTCR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, - .type = ARM_CP_ALIAS, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) }, - { .name = "VTCR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2, - .access = PL2_RW, - /* no .writefn needed as this can't cause an ASID change; - * no .raw_writefn or .resetfn needed as we never use mask/base_mask - */ - .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) }, - { .name = "VTTBR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 6, .crm = 2, - .type = ARM_CP_64BIT | ARM_CP_ALIAS, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2), - .writefn = vttbr_write }, - { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0, - .access = PL2_RW, .writefn = vttbr_write, - .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2) }, - { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0, - .access = PL2_RW, .raw_writefn = raw_write, .writefn = sctlr_write, - .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[2]) }, - { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2, - .access = PL2_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[2]) }, - { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0, - .access = PL2_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) }, - { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2, - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS, - .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) }, - { .name = "TLBI_ALLE2", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0, - .type = ARM_CP_NO_RAW, .access = PL2_W, - .writefn = tlbi_aa64_alle2_write }, - { .name = "TLBI_VAE2", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL2_W, - .writefn = tlbi_aa64_vae2_write }, - { .name = "TLBI_VALE2", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae2_write }, - { .name = "TLBI_ALLE2IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle2is_write }, - { .name = "TLBI_VAE2IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1, - .type = ARM_CP_NO_RAW, .access = PL2_W, - .writefn = tlbi_aa64_vae2is_write }, - { .name = "TLBI_VALE2IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5, - .access = PL2_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae2is_write }, -#ifndef CONFIG_USER_ONLY - /* Unlike the other EL2-related AT operations, these must - * UNDEF from EL3 if EL2 is not implemented, which is why we - * define them here rather than with the rest of the AT ops. - */ - { .name = "AT_S1E2R", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0, - .access = PL2_W, .accessfn = at_s1e2_access, - .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - { .name = "AT_S1E2W", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1, - .access = PL2_W, .accessfn = at_s1e2_access, - .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, - /* The AArch32 ATS1H* operations are CONSTRAINED UNPREDICTABLE - * if EL2 is not implemented; we choose to UNDEF. Behaviour at EL3 - * with SCR.NS == 0 outside Monitor mode is UNPREDICTABLE; we choose - * to behave as if SCR.NS was 1. - */ - { .name = "ATS1HR", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0, - .access = PL2_W, - .writefn = ats1h_write, .type = ARM_CP_NO_RAW }, - { .name = "ATS1HW", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1, - .access = PL2_W, - .writefn = ats1h_write, .type = ARM_CP_NO_RAW }, - { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0, - /* ARMv7 requires bit 0 and 1 to reset to 1. ARMv8 defines the - * reset values as IMPDEF. We choose to reset to 3 to comply with - * both ARMv7 and ARMv8. - */ - .access = PL2_RW, .resetvalue = 3, - .fieldoffset = offsetof(CPUARMState, cp15.cnthctl_el2) }, - { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3, - .access = PL2_RW, .type = ARM_CP_IO, .resetvalue = 0, - .writefn = gt_cntvoff_write, - .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) }, - { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14, - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS | ARM_CP_IO, - .writefn = gt_cntvoff_write, - .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) }, - { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval), - .type = ARM_CP_IO, .access = PL2_RW, - .writefn = gt_hyp_cval_write, .raw_writefn = raw_write }, - { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval), - .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_IO, - .writefn = gt_hyp_cval_write, .raw_writefn = raw_write }, - { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0, - .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL2_RW, - .resetfn = gt_hyp_timer_reset, - .readfn = gt_hyp_tval_read, .writefn = gt_hyp_tval_write }, - { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH, - .type = ARM_CP_IO, - .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].ctl), - .resetvalue = 0, - .writefn = gt_hyp_ctl_write, .raw_writefn = raw_write }, -#endif - /* The only field of MDCR_EL2 that has a defined architectural reset value - * is MDCR_EL2.HPMN which should reset to the value of PMCR_EL0.N; but we - * don't impelment any PMU event counters, so using zero as a reset - * value for MDCR_EL2 is okay - */ - { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1, - .access = PL2_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el2), }, - { .name = "HPFAR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) }, - { .name = "HPFAR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, - .access = PL2_RW, - .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) }, - REGINFO_SENTINEL -}; - -static CPAccessResult nsacr_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* The NSACR is RW at EL3, and RO for NS EL1 and NS EL2. - * At Secure EL1 it traps to EL3. - */ - if (arm_current_el(env) == 3) { - return CP_ACCESS_OK; - } - if (arm_is_secure_below_el3(env)) { - return CP_ACCESS_TRAP_EL3; - } - /* Accesses from EL1 NS and EL2 NS are UNDEF for write but allow reads. */ - if (isread) { - return CP_ACCESS_OK; - } - return CP_ACCESS_TRAP_UNCATEGORIZED; -} - -static const ARMCPRegInfo el3_cp_reginfo[] = { - { .name = "SCR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 0, - .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3), - .resetvalue = 0, .writefn = scr_write }, - { .name = "SCR", .type = ARM_CP_ALIAS, - .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 0, - .access = PL1_RW, .accessfn = access_trap_aa32s_el1, - .fieldoffset = offsetoflow32(CPUARMState, cp15.scr_el3), - .writefn = scr_write }, - { .name = "SDER32_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 1, - .access = PL3_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.sder) }, - { .name = "SDER", - .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 1, - .access = PL3_RW, .resetvalue = 0, - .fieldoffset = offsetoflow32(CPUARMState, cp15.sder) }, - { .name = "MVBAR", .cp = 15, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1, - .access = PL1_RW, .accessfn = access_trap_aa32s_el1, - .writefn = vbar_write, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.mvbar) }, - { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0, - .access = PL3_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) }, - { .name = "TCR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 2, - .access = PL3_RW, .writefn = vmsa_tcr_el1_write, - .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write, - .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[3]) }, - { .name = "ELR_EL3", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 1, - .access = PL3_RW, - .fieldoffset = offsetof(CPUARMState, elr_el[3]) }, - { .name = "ESR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 2, .opc2 = 0, - .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[3]) }, - { .name = "FAR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 6, .crm = 0, .opc2 = 0, - .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[3]) }, - { .name = "SPSR_EL3", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_ALIAS, - .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 0, - .access = PL3_RW, - .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_MON]) }, - { .name = "VBAR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 0, - .access = PL3_RW, .writefn = vbar_write, - .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[3]), - .resetvalue = 0 }, - { .name = "CPTR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL3_RW, .accessfn = cptr_access, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[3]) }, - { .name = "TPIDR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 13, .crm = 0, .opc2 = 2, - .access = PL3_RW, .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[3]) }, - { .name = "AMAIR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 3, .opc2 = 0, - .access = PL3_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR0_EL3", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 0, - .access = PL3_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "AFSR1_EL3", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 1, - .access = PL3_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "TLBI_ALLE3IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 0, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle3is_write }, - { .name = "TLBI_VAE3IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 1, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae3is_write }, - { .name = "TLBI_VALE3IS", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 5, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae3is_write }, - { .name = "TLBI_ALLE3", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 0, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_alle3_write }, - { .name = "TLBI_VAE3", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 1, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae3_write }, - { .name = "TLBI_VALE3", .state = ARM_CP_STATE_AA64, - .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 5, - .access = PL3_W, .type = ARM_CP_NO_RAW, - .writefn = tlbi_aa64_vae3_write }, - REGINFO_SENTINEL -}; - -static CPAccessResult ctr_el0_access(CPUARMState *env, const ARMCPRegInfo *ri, - bool isread) -{ - /* Only accessible in EL0 if SCTLR.UCT is set (and only in AArch64, - * but the AArch32 CTR has its own reginfo struct) - */ - if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCT)) { - return CP_ACCESS_TRAP; - } - return CP_ACCESS_OK; -} - -static void oslar_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Writes to OSLAR_EL1 may update the OS lock status, which can be - * read via a bit in OSLSR_EL1. - */ - int oslock; - - if (ri->state == ARM_CP_STATE_AA32) { - oslock = (value == 0xC5ACCE55); - } else { - oslock = value & 1; - } - - env->cp15.oslsr_el1 = deposit32(env->cp15.oslsr_el1, 1, 1, oslock); -} - -static const ARMCPRegInfo debug_cp_reginfo[] = { - /* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped - * debug components. The AArch64 version of DBGDRAR is named MDRAR_EL1; - * unlike DBGDRAR it is never accessible from EL0. - * DBGDSAR is deprecated and must RAZ from v8 anyway, so it has no AArch64 - * accessor. - */ - { .name = "DBGDRAR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL0_R, .accessfn = access_tdra, - .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "MDRAR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0, - .access = PL1_R, .accessfn = access_tdra, - .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "DBGDSAR", .cp = 14, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL0_R, .accessfn = access_tdra, - .type = ARM_CP_CONST, .resetvalue = 0 }, - /* Monitor debug system control register; the 32-bit alias is DBGDSCRext. */ - { .name = "MDSCR_EL1", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2, - .access = PL1_RW, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), - .resetvalue = 0 }, - /* MDCCSR_EL0, aka DBGDSCRint. This is a read-only mirror of MDSCR_EL1. - * We don't implement the configurable EL0 access. - */ - { .name = "MDCCSR_EL0", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0, - .type = ARM_CP_ALIAS, - .access = PL1_R, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), }, - { .name = "OSLAR_EL1", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4, - .access = PL1_W, .type = ARM_CP_NO_RAW, - .accessfn = access_tdosa, - .writefn = oslar_write }, - { .name = "OSLSR_EL1", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 4, - .access = PL1_R, .resetvalue = 10, - .accessfn = access_tdosa, - .fieldoffset = offsetof(CPUARMState, cp15.oslsr_el1) }, - /* Dummy OSDLR_EL1: 32-bit Linux will read this */ - { .name = "OSDLR_EL1", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 4, - .access = PL1_RW, .accessfn = access_tdosa, - .type = ARM_CP_NOP }, - /* Dummy DBGVCR: Linux wants to clear this on startup, but we don't - * implement vector catch debug events yet. - */ - { .name = "DBGVCR", - .cp = 14, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0, - .access = PL1_RW, .accessfn = access_tda, - .type = ARM_CP_NOP }, - REGINFO_SENTINEL -}; - -static const ARMCPRegInfo debug_lpae_cp_reginfo[] = { - /* 64 bit access versions of the (dummy) debug registers */ - { .name = "DBGDRAR", .cp = 14, .crm = 1, .opc1 = 0, - .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 }, - { .name = "DBGDSAR", .cp = 14, .crm = 2, .opc1 = 0, - .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 }, - REGINFO_SENTINEL -}; - -void hw_watchpoint_update(ARMCPU *cpu, int n) -{ - CPUARMState *env = &cpu->env; - vaddr len = 0; - vaddr wvr = env->cp15.dbgwvr[n]; - uint64_t wcr = env->cp15.dbgwcr[n]; - int mask; - int flags = BP_CPU | BP_STOP_BEFORE_ACCESS; - - if (env->cpu_watchpoint[n]) { - cpu_watchpoint_remove_by_ref(CPU(cpu), env->cpu_watchpoint[n]); - env->cpu_watchpoint[n] = NULL; - } - - if (!extract64(wcr, 0, 1)) { - /* E bit clear : watchpoint disabled */ - return; - } - - switch (extract64(wcr, 3, 2)) { - case 0: - /* LSC 00 is reserved and must behave as if the wp is disabled */ - return; - case 1: - flags |= BP_MEM_READ; - break; - case 2: - flags |= BP_MEM_WRITE; - break; - case 3: - flags |= BP_MEM_ACCESS; - break; - } - - /* Attempts to use both MASK and BAS fields simultaneously are - * CONSTRAINED UNPREDICTABLE; we opt to ignore BAS in this case, - * thus generating a watchpoint for every byte in the masked region. - */ - mask = extract64(wcr, 24, 4); - if (mask == 1 || mask == 2) { - /* Reserved values of MASK; we must act as if the mask value was - * some non-reserved value, or as if the watchpoint were disabled. - * We choose the latter. - */ - return; - } else if (mask) { - /* Watchpoint covers an aligned area up to 2GB in size */ - len = 1ULL << mask; - /* If masked bits in WVR are not zero it's CONSTRAINED UNPREDICTABLE - * whether the watchpoint fires when the unmasked bits match; we opt - * to generate the exceptions. - */ - wvr &= ~(len - 1); - } else { - /* Watchpoint covers bytes defined by the byte address select bits */ - int bas = extract64(wcr, 5, 8); - int basstart; - - if (bas == 0) { - /* This must act as if the watchpoint is disabled */ - return; - } - - if (extract64(wvr, 2, 1)) { - /* Deprecated case of an only 4-aligned address. BAS[7:4] are - * ignored, and BAS[3:0] define which bytes to watch. - */ - bas &= 0xf; - } - /* The BAS bits are supposed to be programmed to indicate a contiguous - * range of bytes. Otherwise it is CONSTRAINED UNPREDICTABLE whether - * we fire for each byte in the word/doubleword addressed by the WVR. - * We choose to ignore any non-zero bits after the first range of 1s. - */ - basstart = ctz32(bas); - len = cto32(bas >> basstart); - wvr += basstart; - } - - cpu_watchpoint_insert(CPU(cpu), wvr, len, flags, - &env->cpu_watchpoint[n]); -} - -void hw_watchpoint_update_all(ARMCPU *cpu) -{ - int i; - CPUARMState *env = &cpu->env; - - /* Completely clear out existing QEMU watchpoints and our array, to - * avoid possible stale entries following migration load. - */ - cpu_watchpoint_remove_all(CPU(cpu), BP_CPU); - memset(env->cpu_watchpoint, 0, sizeof(env->cpu_watchpoint)); - - for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_watchpoint); i++) { - hw_watchpoint_update(cpu, i); - } -} - -static void dbgwvr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int i = ri->crm; - - /* Bits [63:49] are hardwired to the value of bit [48]; that is, the - * register reads and behaves as if values written are sign extended. - * Bits [1:0] are RES0. - */ - value = sextract64(value, 0, 49) & ~3ULL; - - raw_write(env, ri, value); - hw_watchpoint_update(cpu, i); -} - -static void dbgwcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int i = ri->crm; - - raw_write(env, ri, value); - hw_watchpoint_update(cpu, i); -} - -void hw_breakpoint_update(ARMCPU *cpu, int n) -{ - CPUARMState *env = &cpu->env; - uint64_t bvr = env->cp15.dbgbvr[n]; - uint64_t bcr = env->cp15.dbgbcr[n]; - vaddr addr; - int bt; - int flags = BP_CPU; - - if (env->cpu_breakpoint[n]) { - cpu_breakpoint_remove_by_ref(CPU(cpu), env->cpu_breakpoint[n]); - env->cpu_breakpoint[n] = NULL; - } - - if (!extract64(bcr, 0, 1)) { - /* E bit clear : watchpoint disabled */ - return; - } - - bt = extract64(bcr, 20, 4); - - switch (bt) { - case 4: /* unlinked address mismatch (reserved if AArch64) */ - case 5: /* linked address mismatch (reserved if AArch64) */ - qemu_log_mask(LOG_UNIMP, - "arm: address mismatch breakpoint types not implemented"); - return; - case 0: /* unlinked address match */ - case 1: /* linked address match */ - { - /* Bits [63:49] are hardwired to the value of bit [48]; that is, - * we behave as if the register was sign extended. Bits [1:0] are - * RES0. The BAS field is used to allow setting breakpoints on 16 - * bit wide instructions; it is CONSTRAINED UNPREDICTABLE whether - * a bp will fire if the addresses covered by the bp and the addresses - * covered by the insn overlap but the insn doesn't start at the - * start of the bp address range. We choose to require the insn and - * the bp to have the same address. The constraints on writing to - * BAS enforced in dbgbcr_write mean we have only four cases: - * 0b0000 => no breakpoint - * 0b0011 => breakpoint on addr - * 0b1100 => breakpoint on addr + 2 - * 0b1111 => breakpoint on addr - * See also figure D2-3 in the v8 ARM ARM (DDI0487A.c). - */ - int bas = extract64(bcr, 5, 4); - addr = sextract64(bvr, 0, 49) & ~3ULL; - if (bas == 0) { - return; - } - if (bas == 0xc) { - addr += 2; - } - break; - } - case 2: /* unlinked context ID match */ - case 8: /* unlinked VMID match (reserved if no EL2) */ - case 10: /* unlinked context ID and VMID match (reserved if no EL2) */ - qemu_log_mask(LOG_UNIMP, - "arm: unlinked context breakpoint types not implemented"); - return; - case 9: /* linked VMID match (reserved if no EL2) */ - case 11: /* linked context ID and VMID match (reserved if no EL2) */ - case 3: /* linked context ID match */ - default: - /* We must generate no events for Linked context matches (unless - * they are linked to by some other bp/wp, which is handled in - * updates for the linking bp/wp). We choose to also generate no events - * for reserved values. - */ - return; - } - - cpu_breakpoint_insert(CPU(cpu), addr, flags, &env->cpu_breakpoint[n]); -} - -void hw_breakpoint_update_all(ARMCPU *cpu) -{ - int i; - CPUARMState *env = &cpu->env; - - /* Completely clear out existing QEMU breakpoints and our array, to - * avoid possible stale entries following migration load. - */ - cpu_breakpoint_remove_all(CPU(cpu), BP_CPU); - memset(env->cpu_breakpoint, 0, sizeof(env->cpu_breakpoint)); - - for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_breakpoint); i++) { - hw_breakpoint_update(cpu, i); - } -} - -static void dbgbvr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int i = ri->crm; - - raw_write(env, ri, value); - hw_breakpoint_update(cpu, i); -} - -static void dbgbcr_write(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int i = ri->crm; - - /* BAS[3] is a read-only copy of BAS[2], and BAS[1] a read-only - * copy of BAS[0]. - */ - value = deposit64(value, 6, 1, extract64(value, 5, 1)); - value = deposit64(value, 8, 1, extract64(value, 7, 1)); - - raw_write(env, ri, value); - hw_breakpoint_update(cpu, i); -} - -static void define_debug_regs(ARMCPU *cpu) -{ - /* Define v7 and v8 architectural debug registers. - * These are just dummy implementations for now. - */ - int i; - int wrps, brps, ctx_cmps; - ARMCPRegInfo dbgdidr = { - .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL0_R, .accessfn = access_tda, - .type = ARM_CP_CONST, .resetvalue = cpu->dbgdidr, - }; - - /* Note that all these register fields hold "number of Xs minus 1". */ - brps = extract32(cpu->dbgdidr, 24, 4); - wrps = extract32(cpu->dbgdidr, 28, 4); - ctx_cmps = extract32(cpu->dbgdidr, 20, 4); - - assert(ctx_cmps <= brps); - - /* The DBGDIDR and ID_AA64DFR0_EL1 define various properties - * of the debug registers such as number of breakpoints; - * check that if they both exist then they agree. - */ - if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { - assert(extract32(cpu->id_aa64dfr0, 12, 4) == brps); - assert(extract32(cpu->id_aa64dfr0, 20, 4) == wrps); - assert(extract32(cpu->id_aa64dfr0, 28, 4) == ctx_cmps); - } - - define_one_arm_cp_reg(cpu, &dbgdidr); - define_arm_cp_regs(cpu, debug_cp_reginfo); - - if (arm_feature(&cpu->env, ARM_FEATURE_LPAE)) { - define_arm_cp_regs(cpu, debug_lpae_cp_reginfo); - } - - for (i = 0; i < brps + 1; i++) { - ARMCPRegInfo dbgregs[] = { - { .name = "DBGBVR", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 4, - .access = PL1_RW, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.dbgbvr[i]), - .writefn = dbgbvr_write, .raw_writefn = raw_write - }, - { .name = "DBGBCR", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 5, - .access = PL1_RW, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.dbgbcr[i]), - .writefn = dbgbcr_write, .raw_writefn = raw_write - }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, dbgregs); - } - - for (i = 0; i < wrps + 1; i++) { - ARMCPRegInfo dbgregs[] = { - { .name = "DBGWVR", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 6, - .access = PL1_RW, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.dbgwvr[i]), - .writefn = dbgwvr_write, .raw_writefn = raw_write - }, - { .name = "DBGWCR", .state = ARM_CP_STATE_BOTH, - .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 7, - .access = PL1_RW, .accessfn = access_tda, - .fieldoffset = offsetof(CPUARMState, cp15.dbgwcr[i]), - .writefn = dbgwcr_write, .raw_writefn = raw_write - }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, dbgregs); - } -} - -void register_cp_regs_for_features(ARMCPU *cpu) -{ - /* Register all the coprocessor registers based on feature bits */ - CPUARMState *env = &cpu->env; - if (arm_feature(env, ARM_FEATURE_M)) { - /* M profile has no coprocessor registers */ - return; - } - - define_arm_cp_regs(cpu, cp_reginfo); - if (!arm_feature(env, ARM_FEATURE_V8)) { - /* Must go early as it is full of wildcards that may be - * overridden by later definitions. - */ - define_arm_cp_regs(cpu, not_v8_cp_reginfo); - } - - if (arm_feature(env, ARM_FEATURE_V6)) { - /* The ID registers all have impdef reset values */ - ARMCPRegInfo v6_idregs[] = { - { .name = "ID_PFR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_pfr0 }, - { .name = "ID_PFR1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_pfr1 }, - { .name = "ID_DFR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_dfr0 }, - { .name = "ID_AFR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_afr0 }, - { .name = "ID_MMFR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_mmfr0 }, - { .name = "ID_MMFR1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_mmfr1 }, - { .name = "ID_MMFR2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_mmfr2 }, - { .name = "ID_MMFR3", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_mmfr3 }, - { .name = "ID_ISAR0", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar0 }, - { .name = "ID_ISAR1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar1 }, - { .name = "ID_ISAR2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar2 }, - { .name = "ID_ISAR3", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar3 }, - { .name = "ID_ISAR4", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar4 }, - { .name = "ID_ISAR5", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_isar5 }, - { .name = "ID_MMFR4", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_mmfr4 }, - /* 7 is as yet unallocated and must RAZ */ - { .name = "ID_ISAR7_RESERVED", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, v6_idregs); - define_arm_cp_regs(cpu, v6_cp_reginfo); - } else { - define_arm_cp_regs(cpu, not_v6_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_V6K)) { - define_arm_cp_regs(cpu, v6k_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_V7MP) && - !arm_feature(env, ARM_FEATURE_MPU)) { - define_arm_cp_regs(cpu, v7mp_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_V7)) { - /* v7 performance monitor control register: same implementor - * field as main ID register, and we implement only the cycle - * count register. - */ -#ifndef CONFIG_USER_ONLY - ARMCPRegInfo pmcr = { - .name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0, - .access = PL0_RW, - .type = ARM_CP_IO | ARM_CP_ALIAS, - .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcr), - .accessfn = pmreg_access, .writefn = pmcr_write, - .raw_writefn = raw_write, - }; - ARMCPRegInfo pmcr64 = { - .name = "PMCR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 0, - .access = PL0_RW, .accessfn = pmreg_access, - .type = ARM_CP_IO, - .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr), - .resetvalue = cpu->midr & 0xff000000, - .writefn = pmcr_write, .raw_writefn = raw_write, - }; - define_one_arm_cp_reg(cpu, &pmcr); - define_one_arm_cp_reg(cpu, &pmcr64); -#endif - ARMCPRegInfo clidr = { - .name = "CLIDR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr - }; - define_one_arm_cp_reg(cpu, &clidr); - define_arm_cp_regs(cpu, v7_cp_reginfo); - define_debug_regs(cpu); - } else { - define_arm_cp_regs(cpu, not_v7_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_V8)) { - /* AArch64 ID registers, which all have impdef reset values. - * Note that within the ID register ranges the unused slots - * must all RAZ, not UNDEF; future architecture versions may - * define new registers here. - */ - ARMCPRegInfo v8_idregs[] = { - { .name = "ID_AA64PFR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64pfr0 }, - { .name = "ID_AA64PFR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64pfr1}, - { .name = "ID_AA64PFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64PFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64PFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64PFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64PFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64PFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64DFR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - /* We mask out the PMUVer field, because we don't currently - * implement the PMU. Not advertising it prevents the guest - * from trying to use it and getting UNDEFs on registers we - * don't implement. - */ - .resetvalue = cpu->id_aa64dfr0 & ~0xf00 }, - { .name = "ID_AA64DFR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64dfr1 }, - { .name = "ID_AA64DFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64DFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64AFR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64afr0 }, - { .name = "ID_AA64AFR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64afr1 }, - { .name = "ID_AA64AFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64AFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64isar0 }, - { .name = "ID_AA64ISAR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64isar1 }, - { .name = "ID_AA64ISAR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64ISAR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64mmfr0 }, - { .name = "ID_AA64MMFR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->id_aa64mmfr1 }, - { .name = "ID_AA64MMFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ID_AA64MMFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "MVFR0_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->mvfr0 }, - { .name = "MVFR1_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->mvfr1 }, - { .name = "MVFR2_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->mvfr2 }, - { .name = "MVFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "MVFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "MVFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 5, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "MVFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "MVFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 7, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "PMCEID0", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 6, - .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, - .resetvalue = cpu->pmceid0 }, - { .name = "PMCEID0_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 6, - .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, - .resetvalue = cpu->pmceid0 }, - { .name = "PMCEID1", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 7, - .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, - .resetvalue = cpu->pmceid1 }, - { .name = "PMCEID1_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 7, - .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST, - .resetvalue = cpu->pmceid1 }, - REGINFO_SENTINEL - }; - /* RVBAR_EL1 is only implemented if EL1 is the highest EL */ - if (!arm_feature(env, ARM_FEATURE_EL3) && - !arm_feature(env, ARM_FEATURE_EL2)) { - ARMCPRegInfo rvbar = { - .name = "RVBAR_EL1", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1, - .type = ARM_CP_CONST, .access = PL1_R, .resetvalue = cpu->rvbar - }; - define_one_arm_cp_reg(cpu, &rvbar); - } - define_arm_cp_regs(cpu, v8_idregs); - define_arm_cp_regs(cpu, v8_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_EL2)) { - uint64_t vmpidr_def = mpidr_read_val(env); - ARMCPRegInfo vpidr_regs[] = { - { .name = "VPIDR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .resetvalue = cpu->midr, - .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) }, - { .name = "VPIDR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, - .access = PL2_RW, .resetvalue = cpu->midr, - .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) }, - { .name = "VMPIDR", .state = ARM_CP_STATE_AA32, - .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, - .access = PL2_RW, .accessfn = access_el3_aa32ns, - .resetvalue = vmpidr_def, - .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) }, - { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, - .access = PL2_RW, - .resetvalue = vmpidr_def, - .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, vpidr_regs); - define_arm_cp_regs(cpu, el2_cp_reginfo); - /* RVBAR_EL2 is only implemented if EL2 is the highest EL */ - if (!arm_feature(env, ARM_FEATURE_EL3)) { - ARMCPRegInfo rvbar = { - .name = "RVBAR_EL2", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 1, - .type = ARM_CP_CONST, .access = PL2_R, .resetvalue = cpu->rvbar - }; - define_one_arm_cp_reg(cpu, &rvbar); - } - } else { - /* If EL2 is missing but higher ELs are enabled, we need to - * register the no_el2 reginfos. - */ - if (arm_feature(env, ARM_FEATURE_EL3)) { - /* When EL3 exists but not EL2, VPIDR and VMPIDR take the value - * of MIDR_EL1 and MPIDR_EL1. - */ - ARMCPRegInfo vpidr_regs[] = { - { .name = "VPIDR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0, - .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, - .type = ARM_CP_CONST, .resetvalue = cpu->midr, - .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) }, - { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5, - .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any, - .type = ARM_CP_NO_RAW, - .writefn = arm_cp_write_ignore, .readfn = mpidr_read }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, vpidr_regs); - define_arm_cp_regs(cpu, el3_no_el2_cp_reginfo); - } - } - if (arm_feature(env, ARM_FEATURE_EL3)) { - define_arm_cp_regs(cpu, el3_cp_reginfo); - ARMCPRegInfo el3_regs[] = { - { .name = "RVBAR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 1, - .type = ARM_CP_CONST, .access = PL3_R, .resetvalue = cpu->rvbar }, - { .name = "SCTLR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0, - .access = PL3_RW, - .raw_writefn = raw_write, .writefn = sctlr_write, - .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]), - .resetvalue = cpu->reset_sctlr }, - REGINFO_SENTINEL - }; - - define_arm_cp_regs(cpu, el3_regs); - } - /* The behaviour of NSACR is sufficiently various that we don't - * try to describe it in a single reginfo: - * if EL3 is 64 bit, then trap to EL3 from S EL1, - * reads as constant 0xc00 from NS EL1 and NS EL2 - * if EL3 is 32 bit, then RW at EL3, RO at NS EL1 and NS EL2 - * if v7 without EL3, register doesn't exist - * if v8 without EL3, reads as constant 0xc00 from NS EL1 and NS EL2 - */ - if (arm_feature(env, ARM_FEATURE_EL3)) { - if (arm_feature(env, ARM_FEATURE_AARCH64)) { - ARMCPRegInfo nsacr = { - .name = "NSACR", .type = ARM_CP_CONST, - .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL1_RW, .accessfn = nsacr_access, - .resetvalue = 0xc00 - }; - define_one_arm_cp_reg(cpu, &nsacr); - } else { - ARMCPRegInfo nsacr = { - .name = "NSACR", - .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL3_RW | PL1_R, - .resetvalue = 0, - .fieldoffset = offsetof(CPUARMState, cp15.nsacr) - }; - define_one_arm_cp_reg(cpu, &nsacr); - } - } else { - if (arm_feature(env, ARM_FEATURE_V8)) { - ARMCPRegInfo nsacr = { - .name = "NSACR", .type = ARM_CP_CONST, - .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2, - .access = PL1_R, - .resetvalue = 0xc00 - }; - define_one_arm_cp_reg(cpu, &nsacr); - } - } - - if (arm_feature(env, ARM_FEATURE_MPU)) { - if (arm_feature(env, ARM_FEATURE_V6)) { - /* PMSAv6 not implemented */ - assert(arm_feature(env, ARM_FEATURE_V7)); - define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo); - define_arm_cp_regs(cpu, pmsav7_cp_reginfo); - } else { - define_arm_cp_regs(cpu, pmsav5_cp_reginfo); - } - } else { - define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo); - define_arm_cp_regs(cpu, vmsa_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_THUMB2EE)) { - define_arm_cp_regs(cpu, t2ee_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) { - define_arm_cp_regs(cpu, generic_timer_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_VAPA)) { - define_arm_cp_regs(cpu, vapa_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_CACHE_TEST_CLEAN)) { - define_arm_cp_regs(cpu, cache_test_clean_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_CACHE_DIRTY_REG)) { - define_arm_cp_regs(cpu, cache_dirty_status_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_CACHE_BLOCK_OPS)) { - define_arm_cp_regs(cpu, cache_block_ops_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_OMAPCP)) { - define_arm_cp_regs(cpu, omap_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_STRONGARM)) { - define_arm_cp_regs(cpu, strongarm_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_XSCALE)) { - define_arm_cp_regs(cpu, xscale_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) { - define_arm_cp_regs(cpu, dummy_c15_cp_reginfo); - } - if (arm_feature(env, ARM_FEATURE_LPAE)) { - define_arm_cp_regs(cpu, lpae_cp_reginfo); - } - /* Slightly awkwardly, the OMAP and StrongARM cores need all of - * cp15 crn=0 to be writes-ignored, whereas for other cores they should - * be read-only (ie write causes UNDEF exception). - */ - { - ARMCPRegInfo id_pre_v8_midr_cp_reginfo[] = { - /* Pre-v8 MIDR space. - * Note that the MIDR isn't a simple constant register because - * of the TI925 behaviour where writes to another register can - * cause the MIDR value to change. - * - * Unimplemented registers in the c15 0 0 0 space default to - * MIDR. Define MIDR first as this entire space, then CTR, TCMTR - * and friends override accordingly. - */ - { .name = "MIDR", - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .resetvalue = cpu->midr, - .writefn = arm_cp_write_ignore, .raw_writefn = raw_write, - .readfn = midr_read, - .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid), - .type = ARM_CP_OVERRIDE }, - /* crn = 0 op1 = 0 crm = 3..7 : currently unassigned; we RAZ. */ - { .name = "DUMMY", - .cp = 15, .crn = 0, .crm = 3, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "DUMMY", - .cp = 15, .crn = 0, .crm = 4, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "DUMMY", - .cp = 15, .crn = 0, .crm = 5, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "DUMMY", - .cp = 15, .crn = 0, .crm = 6, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - { .name = "DUMMY", - .cp = 15, .crn = 0, .crm = 7, .opc1 = 0, .opc2 = CP_ANY, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - REGINFO_SENTINEL - }; - ARMCPRegInfo id_v8_midr_cp_reginfo[] = { - { .name = "MIDR_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 0, - .access = PL1_R, .type = ARM_CP_NO_RAW, .resetvalue = cpu->midr, - .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid), - .readfn = midr_read }, - /* crn = 0 op1 = 0 crm = 0 op2 = 4,7 : AArch32 aliases of MIDR */ - { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST, - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4, - .access = PL1_R, .resetvalue = cpu->midr }, - { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST, - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 7, - .access = PL1_R, .resetvalue = cpu->midr }, - { .name = "REVIDR_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 6, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->revidr }, - REGINFO_SENTINEL - }; - ARMCPRegInfo id_cp_reginfo[] = { - /* These are common to v8 and pre-v8 */ - { .name = "CTR", - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 1, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->ctr }, - { .name = "CTR_EL0", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 0, .crm = 0, - .access = PL0_R, .accessfn = ctr_el0_access, - .type = ARM_CP_CONST, .resetvalue = cpu->ctr }, - /* TCMTR and TLBTR exist in v8 but have no 64-bit versions */ - { .name = "TCMTR", - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 2, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 }, - REGINFO_SENTINEL - }; - /* TLBTR is specific to VMSA */ - ARMCPRegInfo id_tlbtr_reginfo = { - .name = "TLBTR", - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 3, - .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0, - }; - /* MPUIR is specific to PMSA V6+ */ - ARMCPRegInfo id_mpuir_reginfo = { - .name = "MPUIR", - .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4, - .access = PL1_R, .type = ARM_CP_CONST, - .resetvalue = cpu->pmsav7_dregion << 8 - }; - ARMCPRegInfo crn0_wi_reginfo = { - .name = "CRN0_WI", .cp = 15, .crn = 0, .crm = CP_ANY, - .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_W, - .type = ARM_CP_NOP | ARM_CP_OVERRIDE - }; - if (arm_feature(env, ARM_FEATURE_OMAPCP) || - arm_feature(env, ARM_FEATURE_STRONGARM)) { - ARMCPRegInfo *r; - /* Register the blanket "writes ignored" value first to cover the - * whole space. Then update the specific ID registers to allow write - * access, so that they ignore writes rather than causing them to - * UNDEF. - */ - define_one_arm_cp_reg(cpu, &crn0_wi_reginfo); - for (r = id_pre_v8_midr_cp_reginfo; - r->type != ARM_CP_SENTINEL; r++) { - r->access = PL1_RW; - } - for (r = id_cp_reginfo; r->type != ARM_CP_SENTINEL; r++) { - r->access = PL1_RW; - } - id_tlbtr_reginfo.access = PL1_RW; - id_tlbtr_reginfo.access = PL1_RW; - } - if (arm_feature(env, ARM_FEATURE_V8)) { - define_arm_cp_regs(cpu, id_v8_midr_cp_reginfo); - } else { - define_arm_cp_regs(cpu, id_pre_v8_midr_cp_reginfo); - } - define_arm_cp_regs(cpu, id_cp_reginfo); - if (!arm_feature(env, ARM_FEATURE_MPU)) { - define_one_arm_cp_reg(cpu, &id_tlbtr_reginfo); - } else if (arm_feature(env, ARM_FEATURE_V7)) { - define_one_arm_cp_reg(cpu, &id_mpuir_reginfo); - } - } - - if (arm_feature(env, ARM_FEATURE_MPIDR)) { - define_arm_cp_regs(cpu, mpidr_cp_reginfo); - } - - if (arm_feature(env, ARM_FEATURE_AUXCR)) { - ARMCPRegInfo auxcr_reginfo[] = { - { .name = "ACTLR_EL1", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 1, - .access = PL1_RW, .type = ARM_CP_CONST, - .resetvalue = cpu->reset_auxcr }, - { .name = "ACTLR_EL2", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 1, - .access = PL2_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - { .name = "ACTLR_EL3", .state = ARM_CP_STATE_AA64, - .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 1, - .access = PL3_RW, .type = ARM_CP_CONST, - .resetvalue = 0 }, - REGINFO_SENTINEL - }; - define_arm_cp_regs(cpu, auxcr_reginfo); - } - - if (arm_feature(env, ARM_FEATURE_CBAR)) { - if (arm_feature(env, ARM_FEATURE_AARCH64)) { - /* 32 bit view is [31:18] 0...0 [43:32]. */ - uint32_t cbar32 = (extract64(cpu->reset_cbar, 18, 14) << 18) - | extract64(cpu->reset_cbar, 32, 12); - ARMCPRegInfo cbar_reginfo[] = { - { .name = "CBAR", - .type = ARM_CP_CONST, - .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0, - .access = PL1_R, .resetvalue = cpu->reset_cbar }, - { .name = "CBAR_EL1", .state = ARM_CP_STATE_AA64, - .type = ARM_CP_CONST, - .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 3, .opc2 = 0, - .access = PL1_R, .resetvalue = cbar32 }, - REGINFO_SENTINEL - }; - /* We don't implement a r/w 64 bit CBAR currently */ - assert(arm_feature(env, ARM_FEATURE_CBAR_RO)); - define_arm_cp_regs(cpu, cbar_reginfo); - } else { - ARMCPRegInfo cbar = { - .name = "CBAR", - .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0, - .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar, - .fieldoffset = offsetof(CPUARMState, - cp15.c15_config_base_address) - }; - if (arm_feature(env, ARM_FEATURE_CBAR_RO)) { - cbar.access = PL1_R; - cbar.fieldoffset = 0; - cbar.type = ARM_CP_CONST; - } - define_one_arm_cp_reg(cpu, &cbar); - } - } - - /* Generic registers whose values depend on the implementation */ - { - ARMCPRegInfo sctlr = { - .name = "SCTLR", .state = ARM_CP_STATE_BOTH, - .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0, - .access = PL1_RW, - .bank_fieldoffsets = { offsetof(CPUARMState, cp15.sctlr_s), - offsetof(CPUARMState, cp15.sctlr_ns) }, - .writefn = sctlr_write, .resetvalue = cpu->reset_sctlr, - .raw_writefn = raw_write, - }; - if (arm_feature(env, ARM_FEATURE_XSCALE)) { - /* Normally we would always end the TB on an SCTLR write, but Linux - * arch/arm/mach-pxa/sleep.S expects two instructions following - * an MMU enable to execute from cache. Imitate this behaviour. - */ - sctlr.type |= ARM_CP_SUPPRESS_TB_END; - } - define_one_arm_cp_reg(cpu, &sctlr); - } -} - -ARMCPU *cpu_arm_init(const char *cpu_model) -{ - return ARM_CPU(cpu_generic_init(TYPE_ARM_CPU, cpu_model)); -} - -void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu) -{ - CPUState *cs = CPU(cpu); - CPUARMState *env = &cpu->env; - - if (arm_feature(env, ARM_FEATURE_AARCH64)) { - gdb_register_coprocessor(cs, aarch64_fpu_gdb_get_reg, - aarch64_fpu_gdb_set_reg, - 34, "aarch64-fpu.xml", 0); - } else if (arm_feature(env, ARM_FEATURE_NEON)) { - gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, - 51, "arm-neon.xml", 0); - } else if (arm_feature(env, ARM_FEATURE_VFP3)) { - gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, - 35, "arm-vfp3.xml", 0); - } else if (arm_feature(env, ARM_FEATURE_VFP)) { - gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg, - 19, "arm-vfp.xml", 0); - } -} - -/* Sort alphabetically by type name, except for "any". */ -static gint arm_cpu_list_compare(gconstpointer a, gconstpointer b) -{ - ObjectClass *class_a = (ObjectClass *)a; - ObjectClass *class_b = (ObjectClass *)b; - const char *name_a, *name_b; - - name_a = object_class_get_name(class_a); - name_b = object_class_get_name(class_b); - if (strcmp(name_a, "any-" TYPE_ARM_CPU) == 0) { - return 1; - } else if (strcmp(name_b, "any-" TYPE_ARM_CPU) == 0) { - return -1; - } else { - return strcmp(name_a, name_b); - } -} - -static void arm_cpu_list_entry(gpointer data, gpointer user_data) -{ - ObjectClass *oc = data; - CPUListState *s = user_data; - const char *typename; - char *name; - - typename = object_class_get_name(oc); - name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_ARM_CPU)); - (*s->cpu_fprintf)(s->file, " %s\n", - name); - g_free(name); -} - -void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf) -{ - CPUListState s = { - .file = f, - .cpu_fprintf = cpu_fprintf, - }; - GSList *list; - - list = object_class_get_list(TYPE_ARM_CPU, false); - list = g_slist_sort(list, arm_cpu_list_compare); - (*cpu_fprintf)(f, "Available CPUs:\n"); - g_slist_foreach(list, arm_cpu_list_entry, &s); - g_slist_free(list); -#ifdef CONFIG_KVM - /* The 'host' CPU type is dynamically registered only if KVM is - * enabled, so we have to special-case it here: - */ - (*cpu_fprintf)(f, " host (only available in KVM mode)\n"); -#endif -} - -static void arm_cpu_add_definition(gpointer data, gpointer user_data) -{ - ObjectClass *oc = data; - CpuDefinitionInfoList **cpu_list = user_data; - CpuDefinitionInfoList *entry; - CpuDefinitionInfo *info; - const char *typename; - - typename = object_class_get_name(oc); - info = g_malloc0(sizeof(*info)); - info->name = g_strndup(typename, - strlen(typename) - strlen("-" TYPE_ARM_CPU)); - - entry = g_malloc0(sizeof(*entry)); - entry->value = info; - entry->next = *cpu_list; - *cpu_list = entry; -} - -CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) -{ - CpuDefinitionInfoList *cpu_list = NULL; - GSList *list; - - list = object_class_get_list(TYPE_ARM_CPU, false); - g_slist_foreach(list, arm_cpu_add_definition, &cpu_list); - g_slist_free(list); - - return cpu_list; -} - -static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r, - void *opaque, int state, int secstate, - int crm, int opc1, int opc2) -{ - /* Private utility function for define_one_arm_cp_reg_with_opaque(): - * add a single reginfo struct to the hash table. - */ - uint32_t *key = g_new(uint32_t, 1); - ARMCPRegInfo *r2 = g_memdup(r, sizeof(ARMCPRegInfo)); - int is64 = (r->type & ARM_CP_64BIT) ? 1 : 0; - int ns = (secstate & ARM_CP_SECSTATE_NS) ? 1 : 0; - - /* Reset the secure state to the specific incoming state. This is - * necessary as the register may have been defined with both states. - */ - r2->secure = secstate; - - if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) { - /* Register is banked (using both entries in array). - * Overwriting fieldoffset as the array is only used to define - * banked registers but later only fieldoffset is used. - */ - r2->fieldoffset = r->bank_fieldoffsets[ns]; - } - - if (state == ARM_CP_STATE_AA32) { - if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) { - /* If the register is banked then we don't need to migrate or - * reset the 32-bit instance in certain cases: - * - * 1) If the register has both 32-bit and 64-bit instances then we - * can count on the 64-bit instance taking care of the - * non-secure bank. - * 2) If ARMv8 is enabled then we can count on a 64-bit version - * taking care of the secure bank. This requires that separate - * 32 and 64-bit definitions are provided. - */ - if ((r->state == ARM_CP_STATE_BOTH && ns) || - (arm_feature(&cpu->env, ARM_FEATURE_V8) && !ns)) { - r2->type |= ARM_CP_ALIAS; - } - } else if ((secstate != r->secure) && !ns) { - /* The register is not banked so we only want to allow migration of - * the non-secure instance. - */ - r2->type |= ARM_CP_ALIAS; - } - - if (r->state == ARM_CP_STATE_BOTH) { - /* We assume it is a cp15 register if the .cp field is left unset. - */ - if (r2->cp == 0) { - r2->cp = 15; - } - -#ifdef HOST_WORDS_BIGENDIAN - if (r2->fieldoffset) { - r2->fieldoffset += sizeof(uint32_t); - } -#endif - } - } - if (state == ARM_CP_STATE_AA64) { - /* To allow abbreviation of ARMCPRegInfo - * definitions, we treat cp == 0 as equivalent to - * the value for "standard guest-visible sysreg". - * STATE_BOTH definitions are also always "standard - * sysreg" in their AArch64 view (the .cp value may - * be non-zero for the benefit of the AArch32 view). - */ - if (r->cp == 0 || r->state == ARM_CP_STATE_BOTH) { - r2->cp = CP_REG_ARM64_SYSREG_CP; - } - *key = ENCODE_AA64_CP_REG(r2->cp, r2->crn, crm, - r2->opc0, opc1, opc2); - } else { - *key = ENCODE_CP_REG(r2->cp, is64, ns, r2->crn, crm, opc1, opc2); - } - if (opaque) { - r2->opaque = opaque; - } - /* reginfo passed to helpers is correct for the actual access, - * and is never ARM_CP_STATE_BOTH: - */ - r2->state = state; - /* Make sure reginfo passed to helpers for wildcarded regs - * has the correct crm/opc1/opc2 for this reg, not CP_ANY: - */ - r2->crm = crm; - r2->opc1 = opc1; - r2->opc2 = opc2; - /* By convention, for wildcarded registers only the first - * entry is used for migration; the others are marked as - * ALIAS so we don't try to transfer the register - * multiple times. Special registers (ie NOP/WFI) are - * never migratable and not even raw-accessible. - */ - if ((r->type & ARM_CP_SPECIAL)) { - r2->type |= ARM_CP_NO_RAW; - } - if (((r->crm == CP_ANY) && crm != 0) || - ((r->opc1 == CP_ANY) && opc1 != 0) || - ((r->opc2 == CP_ANY) && opc2 != 0)) { - r2->type |= ARM_CP_ALIAS; - } - - /* Check that raw accesses are either forbidden or handled. Note that - * we can't assert this earlier because the setup of fieldoffset for - * banked registers has to be done first. - */ - if (!(r2->type & ARM_CP_NO_RAW)) { - assert(!raw_accessors_invalid(r2)); - } - - /* Overriding of an existing definition must be explicitly - * requested. - */ - if (!(r->type & ARM_CP_OVERRIDE)) { - ARMCPRegInfo *oldreg; - oldreg = g_hash_table_lookup(cpu->cp_regs, key); - if (oldreg && !(oldreg->type & ARM_CP_OVERRIDE)) { - fprintf(stderr, "Register redefined: cp=%d %d bit " - "crn=%d crm=%d opc1=%d opc2=%d, " - "was %s, now %s\n", r2->cp, 32 + 32 * is64, - r2->crn, r2->crm, r2->opc1, r2->opc2, - oldreg->name, r2->name); - g_assert_not_reached(); - } - } - g_hash_table_insert(cpu->cp_regs, key, r2); -} - - -void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu, - const ARMCPRegInfo *r, void *opaque) -{ - /* Define implementations of coprocessor registers. - * We store these in a hashtable because typically - * there are less than 150 registers in a space which - * is 16*16*16*8*8 = 262144 in size. - * Wildcarding is supported for the crm, opc1 and opc2 fields. - * If a register is defined twice then the second definition is - * used, so this can be used to define some generic registers and - * then override them with implementation specific variations. - * At least one of the original and the second definition should - * include ARM_CP_OVERRIDE in its type bits -- this is just a guard - * against accidental use. - * - * The state field defines whether the register is to be - * visible in the AArch32 or AArch64 execution state. If the - * state is set to ARM_CP_STATE_BOTH then we synthesise a - * reginfo structure for the AArch32 view, which sees the lower - * 32 bits of the 64 bit register. - * - * Only registers visible in AArch64 may set r->opc0; opc0 cannot - * be wildcarded. AArch64 registers are always considered to be 64 - * bits; the ARM_CP_64BIT* flag applies only to the AArch32 view of - * the register, if any. - */ - int crm, opc1, opc2, state; - int crmmin = (r->crm == CP_ANY) ? 0 : r->crm; - int crmmax = (r->crm == CP_ANY) ? 15 : r->crm; - int opc1min = (r->opc1 == CP_ANY) ? 0 : r->opc1; - int opc1max = (r->opc1 == CP_ANY) ? 7 : r->opc1; - int opc2min = (r->opc2 == CP_ANY) ? 0 : r->opc2; - int opc2max = (r->opc2 == CP_ANY) ? 7 : r->opc2; - /* 64 bit registers have only CRm and Opc1 fields */ - assert(!((r->type & ARM_CP_64BIT) && (r->opc2 || r->crn))); - /* op0 only exists in the AArch64 encodings */ - assert((r->state != ARM_CP_STATE_AA32) || (r->opc0 == 0)); - /* AArch64 regs are all 64 bit so ARM_CP_64BIT is meaningless */ - assert((r->state != ARM_CP_STATE_AA64) || !(r->type & ARM_CP_64BIT)); - /* The AArch64 pseudocode CheckSystemAccess() specifies that op1 - * encodes a minimum access level for the register. We roll this - * runtime check into our general permission check code, so check - * here that the reginfo's specified permissions are strict enough - * to encompass the generic architectural permission check. - */ - if (r->state != ARM_CP_STATE_AA32) { - int mask = 0; - switch (r->opc1) { - case 0: case 1: case 2: - /* min_EL EL1 */ - mask = PL1_RW; - break; - case 3: - /* min_EL EL0 */ - mask = PL0_RW; - break; - case 4: - /* min_EL EL2 */ - mask = PL2_RW; - break; - case 5: - /* unallocated encoding, so not possible */ - assert(false); - break; - case 6: - /* min_EL EL3 */ - mask = PL3_RW; - break; - case 7: - /* min_EL EL1, secure mode only (we don't check the latter) */ - mask = PL1_RW; - break; - default: - /* broken reginfo with out-of-range opc1 */ - assert(false); - break; - } - /* assert our permissions are not too lax (stricter is fine) */ - assert((r->access & ~mask) == 0); - } - - /* Check that the register definition has enough info to handle - * reads and writes if they are permitted. - */ - if (!(r->type & (ARM_CP_SPECIAL|ARM_CP_CONST))) { - if (r->access & PL3_R) { - assert((r->fieldoffset || - (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) || - r->readfn); - } - if (r->access & PL3_W) { - assert((r->fieldoffset || - (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) || - r->writefn); - } - } - /* Bad type field probably means missing sentinel at end of reg list */ - assert(cptype_valid(r->type)); - for (crm = crmmin; crm <= crmmax; crm++) { - for (opc1 = opc1min; opc1 <= opc1max; opc1++) { - for (opc2 = opc2min; opc2 <= opc2max; opc2++) { - for (state = ARM_CP_STATE_AA32; - state <= ARM_CP_STATE_AA64; state++) { - if (r->state != state && r->state != ARM_CP_STATE_BOTH) { - continue; - } - if (state == ARM_CP_STATE_AA32) { - /* Under AArch32 CP registers can be common - * (same for secure and non-secure world) or banked. - */ - switch (r->secure) { - case ARM_CP_SECSTATE_S: - case ARM_CP_SECSTATE_NS: - add_cpreg_to_hashtable(cpu, r, opaque, state, - r->secure, crm, opc1, opc2); - break; - default: - add_cpreg_to_hashtable(cpu, r, opaque, state, - ARM_CP_SECSTATE_S, - crm, opc1, opc2); - add_cpreg_to_hashtable(cpu, r, opaque, state, - ARM_CP_SECSTATE_NS, - crm, opc1, opc2); - break; - } - } else { - /* AArch64 registers get mapped to non-secure instance - * of AArch32 */ - add_cpreg_to_hashtable(cpu, r, opaque, state, - ARM_CP_SECSTATE_NS, - crm, opc1, opc2); - } - } - } - } - } -} - -void define_arm_cp_regs_with_opaque(ARMCPU *cpu, - const ARMCPRegInfo *regs, void *opaque) -{ - /* Define a whole list of registers */ - const ARMCPRegInfo *r; - for (r = regs; r->type != ARM_CP_SENTINEL; r++) { - define_one_arm_cp_reg_with_opaque(cpu, r, opaque); - } -} - -const ARMCPRegInfo *get_arm_cp_reginfo(GHashTable *cpregs, uint32_t encoded_cp) -{ - return g_hash_table_lookup(cpregs, &encoded_cp); -} - -void arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri, - uint64_t value) -{ - /* Helper coprocessor write function for write-ignore registers */ -} - -uint64_t arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri) -{ - /* Helper coprocessor write function for read-as-zero registers */ - return 0; -} - -void arm_cp_reset_ignore(CPUARMState *env, const ARMCPRegInfo *opaque) -{ - /* Helper coprocessor reset function for do-nothing-on-reset registers */ -} - -static int bad_mode_switch(CPUARMState *env, int mode, CPSRWriteType write_type) -{ - /* Return true if it is not valid for us to switch to - * this CPU mode (ie all the UNPREDICTABLE cases in - * the ARM ARM CPSRWriteByInstr pseudocode). - */ - - /* Changes to or from Hyp via MSR and CPS are illegal. */ - if (write_type == CPSRWriteByInstr && - ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_HYP || - mode == ARM_CPU_MODE_HYP)) { - return 1; - } - - switch (mode) { - case ARM_CPU_MODE_USR: - return 0; - case ARM_CPU_MODE_SYS: - case ARM_CPU_MODE_SVC: - case ARM_CPU_MODE_ABT: - case ARM_CPU_MODE_UND: - case ARM_CPU_MODE_IRQ: - case ARM_CPU_MODE_FIQ: - /* Note that we don't implement the IMPDEF NSACR.RFR which in v7 - * allows FIQ mode to be Secure-only. (In v8 this doesn't exist.) - */ - /* If HCR.TGE is set then changes from Monitor to NS PL1 via MSR - * and CPS are treated as illegal mode changes. - */ - if (write_type == CPSRWriteByInstr && - (env->cp15.hcr_el2 & HCR_TGE) && - (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON && - !arm_is_secure_below_el3(env)) { - return 1; - } - return 0; - case ARM_CPU_MODE_HYP: - return !arm_feature(env, ARM_FEATURE_EL2) - || arm_current_el(env) < 2 || arm_is_secure(env); - case ARM_CPU_MODE_MON: - return arm_current_el(env) < 3; - default: - return 1; - } -} - -uint32_t cpsr_read(CPUARMState *env) -{ - int ZF; - ZF = (env->ZF == 0); - return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) | - (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) - | (env->thumb << 5) | ((env->condexec_bits & 3) << 25) - | ((env->condexec_bits & 0xfc) << 8) - | (env->GE << 16) | (env->daif & CPSR_AIF); -} - -void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, - CPSRWriteType write_type) -{ - uint32_t changed_daif; - - if (mask & CPSR_NZCV) { - env->ZF = (~val) & CPSR_Z; - env->NF = val; - env->CF = (val >> 29) & 1; - env->VF = (val << 3) & 0x80000000; - } - if (mask & CPSR_Q) - env->QF = ((val & CPSR_Q) != 0); - if (mask & CPSR_T) - env->thumb = ((val & CPSR_T) != 0); - if (mask & CPSR_IT_0_1) { - env->condexec_bits &= ~3; - env->condexec_bits |= (val >> 25) & 3; - } - if (mask & CPSR_IT_2_7) { - env->condexec_bits &= 3; - env->condexec_bits |= (val >> 8) & 0xfc; - } - if (mask & CPSR_GE) { - env->GE = (val >> 16) & 0xf; - } - - /* In a V7 implementation that includes the security extensions but does - * not include Virtualization Extensions the SCR.FW and SCR.AW bits control - * whether non-secure software is allowed to change the CPSR_F and CPSR_A - * bits respectively. - * - * In a V8 implementation, it is permitted for privileged software to - * change the CPSR A/F bits regardless of the SCR.AW/FW bits. - */ - if (write_type != CPSRWriteRaw && !arm_feature(env, ARM_FEATURE_V8) && - arm_feature(env, ARM_FEATURE_EL3) && - !arm_feature(env, ARM_FEATURE_EL2) && - !arm_is_secure(env)) { - - changed_daif = (env->daif ^ val) & mask; - - if (changed_daif & CPSR_A) { - /* Check to see if we are allowed to change the masking of async - * abort exceptions from a non-secure state. - */ - if (!(env->cp15.scr_el3 & SCR_AW)) { - qemu_log_mask(LOG_GUEST_ERROR, - "Ignoring attempt to switch CPSR_A flag from " - "non-secure world with SCR.AW bit clear\n"); - mask &= ~CPSR_A; - } - } - - if (changed_daif & CPSR_F) { - /* Check to see if we are allowed to change the masking of FIQ - * exceptions from a non-secure state. - */ - if (!(env->cp15.scr_el3 & SCR_FW)) { - qemu_log_mask(LOG_GUEST_ERROR, - "Ignoring attempt to switch CPSR_F flag from " - "non-secure world with SCR.FW bit clear\n"); - mask &= ~CPSR_F; - } - - /* Check whether non-maskable FIQ (NMFI) support is enabled. - * If this bit is set software is not allowed to mask - * FIQs, but is allowed to set CPSR_F to 0. - */ - if ((A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_NMFI) && - (val & CPSR_F)) { - qemu_log_mask(LOG_GUEST_ERROR, - "Ignoring attempt to enable CPSR_F flag " - "(non-maskable FIQ [NMFI] support enabled)\n"); - mask &= ~CPSR_F; - } - } - } - - env->daif &= ~(CPSR_AIF & mask); - env->daif |= val & CPSR_AIF & mask; - - if (write_type != CPSRWriteRaw && - ((env->uncached_cpsr ^ val) & mask & CPSR_M)) { - if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) { - /* Note that we can only get here in USR mode if this is a - * gdb stub write; for this case we follow the architectural - * behaviour for guest writes in USR mode of ignoring an attempt - * to switch mode. (Those are caught by translate.c for writes - * triggered by guest instructions.) - */ - mask &= ~CPSR_M; - } else if (bad_mode_switch(env, val & CPSR_M, write_type)) { - /* Attempt to switch to an invalid mode: this is UNPREDICTABLE in - * v7, and has defined behaviour in v8: - * + leave CPSR.M untouched - * + allow changes to the other CPSR fields - * + set PSTATE.IL - * For user changes via the GDB stub, we don't set PSTATE.IL, - * as this would be unnecessarily harsh for a user error. - */ - mask &= ~CPSR_M; - if (write_type != CPSRWriteByGDBStub && - arm_feature(env, ARM_FEATURE_V8)) { - mask |= CPSR_IL; - val |= CPSR_IL; - } - } else { - switch_mode(env, val & CPSR_M); - } - } - mask &= ~CACHED_CPSR_BITS; - env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask); -} - -/* Sign/zero extend */ -uint32_t HELPER(sxtb16)(uint32_t x) -{ - uint32_t res; - res = (uint16_t)(int8_t)x; - res |= (uint32_t)(int8_t)(x >> 16) << 16; - return res; -} - -uint32_t HELPER(uxtb16)(uint32_t x) -{ - uint32_t res; - res = (uint16_t)(uint8_t)x; - res |= (uint32_t)(uint8_t)(x >> 16) << 16; - return res; -} - -uint32_t HELPER(clz)(uint32_t x) -{ - return clz32(x); -} - -int32_t HELPER(sdiv)(int32_t num, int32_t den) -{ - if (den == 0) - return 0; - if (num == INT_MIN && den == -1) - return INT_MIN; - return num / den; -} - -uint32_t HELPER(udiv)(uint32_t num, uint32_t den) -{ - if (den == 0) - return 0; - return num / den; -} - -uint32_t HELPER(rbit)(uint32_t x) -{ - return revbit32(x); -} - -#if defined(CONFIG_USER_ONLY) - -/* These should probably raise undefined insn exceptions. */ -void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - cpu_abort(CPU(cpu), "v7m_msr %d\n", reg); -} - -uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - cpu_abort(CPU(cpu), "v7m_mrs %d\n", reg); - return 0; -} - -void switch_mode(CPUARMState *env, int mode) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - if (mode != ARM_CPU_MODE_USR) { - cpu_abort(CPU(cpu), "Tried to switch out of user mode\n"); - } -} - -uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, - uint32_t cur_el, bool secure) -{ - return 1; -} - -void aarch64_sync_64_to_32(CPUARMState *env) -{ - g_assert_not_reached(); -} - -#else - -void switch_mode(CPUARMState *env, int mode) -{ - int old_mode; - int i; - - old_mode = env->uncached_cpsr & CPSR_M; - if (mode == old_mode) - return; - - if (old_mode == ARM_CPU_MODE_FIQ) { - memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t)); - memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t)); - } else if (mode == ARM_CPU_MODE_FIQ) { - memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t)); - memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t)); - } - - i = bank_number(old_mode); - env->banked_r13[i] = env->regs[13]; - env->banked_r14[i] = env->regs[14]; - env->banked_spsr[i] = env->spsr; - - i = bank_number(mode); - env->regs[13] = env->banked_r13[i]; - env->regs[14] = env->banked_r14[i]; - env->spsr = env->banked_spsr[i]; -} - -/* Physical Interrupt Target EL Lookup Table - * - * [ From ARM ARM section G1.13.4 (Table G1-15) ] - * - * The below multi-dimensional table is used for looking up the target - * exception level given numerous condition criteria. Specifically, the - * target EL is based on SCR and HCR routing controls as well as the - * currently executing EL and secure state. - * - * Dimensions: - * target_el_table[2][2][2][2][2][4] - * | | | | | +--- Current EL - * | | | | +------ Non-secure(0)/Secure(1) - * | | | +--------- HCR mask override - * | | +------------ SCR exec state control - * | +--------------- SCR mask override - * +------------------ 32-bit(0)/64-bit(1) EL3 - * - * The table values are as such: - * 0-3 = EL0-EL3 - * -1 = Cannot occur - * - * The ARM ARM target EL table includes entries indicating that an "exception - * is not taken". The two cases where this is applicable are: - * 1) An exception is taken from EL3 but the SCR does not have the exception - * routed to EL3. - * 2) An exception is taken from EL2 but the HCR does not have the exception - * routed to EL2. - * In these two cases, the below table contain a target of EL1. This value is - * returned as it is expected that the consumer of the table data will check - * for "target EL >= current EL" to ensure the exception is not taken. - * - * SCR HCR - * 64 EA AMO From - * BIT IRQ IMO Non-secure Secure - * EL3 FIQ RW FMO EL0 EL1 EL2 EL3 EL0 EL1 EL2 EL3 - */ -static const int8_t target_el_table[2][2][2][2][2][4] = { - {{{{/* 0 0 0 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },}, - {/* 0 0 0 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},}, - {{/* 0 0 1 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },}, - {/* 0 0 1 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},}, - {{{/* 0 1 0 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },}, - {/* 0 1 0 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},}, - {{/* 0 1 1 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },}, - {/* 0 1 1 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},},}, - {{{{/* 1 0 0 0 */{ 1, 1, 2, -1 },{ 1, 1, -1, 1 },}, - {/* 1 0 0 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},}, - {{/* 1 0 1 0 */{ 1, 1, 1, -1 },{ 1, 1, -1, 1 },}, - {/* 1 0 1 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},}, - {{{/* 1 1 0 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },}, - {/* 1 1 0 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},}, - {{/* 1 1 1 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },}, - {/* 1 1 1 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},},}, -}; - -/* - * Determine the target EL for physical exceptions - */ -uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, - uint32_t cur_el, bool secure) -{ - CPUARMState *env = cs->env_ptr; - int rw; - int scr; - int hcr; - int target_el; - /* Is the highest EL AArch64? */ - int is64 = arm_feature(env, ARM_FEATURE_AARCH64); - - if (arm_feature(env, ARM_FEATURE_EL3)) { - rw = ((env->cp15.scr_el3 & SCR_RW) == SCR_RW); - } else { - /* Either EL2 is the highest EL (and so the EL2 register width - * is given by is64); or there is no EL2 or EL3, in which case - * the value of 'rw' does not affect the table lookup anyway. - */ - rw = is64; - } - - switch (excp_idx) { - case EXCP_IRQ: - scr = ((env->cp15.scr_el3 & SCR_IRQ) == SCR_IRQ); - hcr = ((env->cp15.hcr_el2 & HCR_IMO) == HCR_IMO); - break; - case EXCP_FIQ: - scr = ((env->cp15.scr_el3 & SCR_FIQ) == SCR_FIQ); - hcr = ((env->cp15.hcr_el2 & HCR_FMO) == HCR_FMO); - break; - default: - scr = ((env->cp15.scr_el3 & SCR_EA) == SCR_EA); - hcr = ((env->cp15.hcr_el2 & HCR_AMO) == HCR_AMO); - break; - }; - - /* If HCR.TGE is set then HCR is treated as being 1 */ - hcr |= ((env->cp15.hcr_el2 & HCR_TGE) == HCR_TGE); - - /* Perform a table-lookup for the target EL given the current state */ - target_el = target_el_table[is64][scr][rw][hcr][secure][cur_el]; - - assert(target_el > 0); - - return target_el; -} - -static void v7m_push(CPUARMState *env, uint32_t val) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - - env->regs[13] -= 4; - stl_phys(cs->as, env->regs[13], val); -} - -static uint32_t v7m_pop(CPUARMState *env) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - uint32_t val; - - val = ldl_phys(cs->as, env->regs[13]); - env->regs[13] += 4; - return val; -} - -/* Switch to V7M main or process stack pointer. */ -static void switch_v7m_sp(CPUARMState *env, int process) -{ - uint32_t tmp; - if (env->v7m.current_sp != process) { - tmp = env->v7m.other_sp; - env->v7m.other_sp = env->regs[13]; - env->regs[13] = tmp; - env->v7m.current_sp = process; - } -} - -static void do_v7m_exception_exit(CPUARMState *env) -{ - uint32_t type; - uint32_t xpsr; - - type = env->regs[15]; - if (env->v7m.exception != 0) - armv7m_nvic_complete_irq(env->nvic, env->v7m.exception); - - /* Switch to the target stack. */ - switch_v7m_sp(env, (type & 4) != 0); - /* Pop registers. */ - env->regs[0] = v7m_pop(env); - env->regs[1] = v7m_pop(env); - env->regs[2] = v7m_pop(env); - env->regs[3] = v7m_pop(env); - env->regs[12] = v7m_pop(env); - env->regs[14] = v7m_pop(env); - env->regs[15] = v7m_pop(env); - if (env->regs[15] & 1) { - qemu_log_mask(LOG_GUEST_ERROR, - "M profile return from interrupt with misaligned " - "PC is UNPREDICTABLE\n"); - /* Actual hardware seems to ignore the lsbit, and there are several - * RTOSes out there which incorrectly assume the r15 in the stack - * frame should be a Thumb-style "lsbit indicates ARM/Thumb" value. - */ - env->regs[15] &= ~1U; - } - xpsr = v7m_pop(env); - xpsr_write(env, xpsr, 0xfffffdff); - /* Undo stack alignment. */ - if (xpsr & 0x200) - env->regs[13] |= 4; - /* ??? The exception return type specifies Thread/Handler mode. However - this is also implied by the xPSR value. Not sure what to do - if there is a mismatch. */ - /* ??? Likewise for mismatches between the CONTROL register and the stack - pointer. */ -} - -void arm_v7m_cpu_do_interrupt(CPUState *cs) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - uint32_t xpsr = xpsr_read(env); - uint32_t lr; - uint32_t addr; - - arm_log_exception(cs->exception_index); - - lr = 0xfffffff1; - if (env->v7m.current_sp) - lr |= 4; - if (env->v7m.exception == 0) - lr |= 8; - - /* For exceptions we just mark as pending on the NVIC, and let that - handle it. */ - /* TODO: Need to escalate if the current priority is higher than the - one we're raising. */ - switch (cs->exception_index) { - case EXCP_UDEF: - armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE); - return; - case EXCP_SWI: - /* The PC already points to the next instruction. */ - armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC); - return; - case EXCP_PREFETCH_ABORT: - case EXCP_DATA_ABORT: - /* TODO: if we implemented the MPU registers, this is where we - * should set the MMFAR, etc from exception.fsr and exception.vaddress. - */ - armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM); - return; - case EXCP_BKPT: - if (semihosting_enabled()) { - int nr; - nr = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) & 0xff; - if (nr == 0xab) { - env->regs[15] += 2; - qemu_log_mask(CPU_LOG_INT, - "...handling as semihosting call 0x%x\n", - env->regs[0]); - env->regs[0] = do_arm_semihosting(env); - return; - } - } - armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG); - return; - case EXCP_IRQ: - env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic); - break; - case EXCP_EXCEPTION_EXIT: - do_v7m_exception_exit(env); - return; - default: - cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); - return; /* Never happens. Keep compiler happy. */ - } - - /* Align stack pointer. */ - /* ??? Should only do this if Configuration Control Register - STACKALIGN bit is set. */ - if (env->regs[13] & 4) { - env->regs[13] -= 4; - xpsr |= 0x200; - } - /* Switch to the handler mode. */ - v7m_push(env, xpsr); - v7m_push(env, env->regs[15]); - v7m_push(env, env->regs[14]); - v7m_push(env, env->regs[12]); - v7m_push(env, env->regs[3]); - v7m_push(env, env->regs[2]); - v7m_push(env, env->regs[1]); - v7m_push(env, env->regs[0]); - switch_v7m_sp(env, 0); - /* Clear IT bits */ - env->condexec_bits = 0; - env->regs[14] = lr; - addr = ldl_phys(cs->as, env->v7m.vecbase + env->v7m.exception * 4); - env->regs[15] = addr & 0xfffffffe; - env->thumb = addr & 1; -} - -/* Function used to synchronize QEMU's AArch64 register set with AArch32 - * register set. This is necessary when switching between AArch32 and AArch64 - * execution state. - */ -void aarch64_sync_32_to_64(CPUARMState *env) -{ - int i; - uint32_t mode = env->uncached_cpsr & CPSR_M; - - /* We can blanket copy R[0:7] to X[0:7] */ - for (i = 0; i < 8; i++) { - env->xregs[i] = env->regs[i]; - } - - /* Unless we are in FIQ mode, x8-x12 come from the user registers r8-r12. - * Otherwise, they come from the banked user regs. - */ - if (mode == ARM_CPU_MODE_FIQ) { - for (i = 8; i < 13; i++) { - env->xregs[i] = env->usr_regs[i - 8]; - } - } else { - for (i = 8; i < 13; i++) { - env->xregs[i] = env->regs[i]; - } - } - - /* Registers x13-x23 are the various mode SP and FP registers. Registers - * r13 and r14 are only copied if we are in that mode, otherwise we copy - * from the mode banked register. - */ - if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) { - env->xregs[13] = env->regs[13]; - env->xregs[14] = env->regs[14]; - } else { - env->xregs[13] = env->banked_r13[bank_number(ARM_CPU_MODE_USR)]; - /* HYP is an exception in that it is copied from r14 */ - if (mode == ARM_CPU_MODE_HYP) { - env->xregs[14] = env->regs[14]; - } else { - env->xregs[14] = env->banked_r14[bank_number(ARM_CPU_MODE_USR)]; - } - } - - if (mode == ARM_CPU_MODE_HYP) { - env->xregs[15] = env->regs[13]; - } else { - env->xregs[15] = env->banked_r13[bank_number(ARM_CPU_MODE_HYP)]; - } - - if (mode == ARM_CPU_MODE_IRQ) { - env->xregs[16] = env->regs[14]; - env->xregs[17] = env->regs[13]; - } else { - env->xregs[16] = env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)]; - env->xregs[17] = env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)]; - } - - if (mode == ARM_CPU_MODE_SVC) { - env->xregs[18] = env->regs[14]; - env->xregs[19] = env->regs[13]; - } else { - env->xregs[18] = env->banked_r14[bank_number(ARM_CPU_MODE_SVC)]; - env->xregs[19] = env->banked_r13[bank_number(ARM_CPU_MODE_SVC)]; - } - - if (mode == ARM_CPU_MODE_ABT) { - env->xregs[20] = env->regs[14]; - env->xregs[21] = env->regs[13]; - } else { - env->xregs[20] = env->banked_r14[bank_number(ARM_CPU_MODE_ABT)]; - env->xregs[21] = env->banked_r13[bank_number(ARM_CPU_MODE_ABT)]; - } - - if (mode == ARM_CPU_MODE_UND) { - env->xregs[22] = env->regs[14]; - env->xregs[23] = env->regs[13]; - } else { - env->xregs[22] = env->banked_r14[bank_number(ARM_CPU_MODE_UND)]; - env->xregs[23] = env->banked_r13[bank_number(ARM_CPU_MODE_UND)]; - } - - /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ - * mode, then we can copy from r8-r14. Otherwise, we copy from the - * FIQ bank for r8-r14. - */ - if (mode == ARM_CPU_MODE_FIQ) { - for (i = 24; i < 31; i++) { - env->xregs[i] = env->regs[i - 16]; /* X[24:30] <- R[8:14] */ - } - } else { - for (i = 24; i < 29; i++) { - env->xregs[i] = env->fiq_regs[i - 24]; - } - env->xregs[29] = env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)]; - env->xregs[30] = env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)]; - } - - env->pc = env->regs[15]; -} - -/* Function used to synchronize QEMU's AArch32 register set with AArch64 - * register set. This is necessary when switching between AArch32 and AArch64 - * execution state. - */ -void aarch64_sync_64_to_32(CPUARMState *env) -{ - int i; - uint32_t mode = env->uncached_cpsr & CPSR_M; - - /* We can blanket copy X[0:7] to R[0:7] */ - for (i = 0; i < 8; i++) { - env->regs[i] = env->xregs[i]; - } - - /* Unless we are in FIQ mode, r8-r12 come from the user registers x8-x12. - * Otherwise, we copy x8-x12 into the banked user regs. - */ - if (mode == ARM_CPU_MODE_FIQ) { - for (i = 8; i < 13; i++) { - env->usr_regs[i - 8] = env->xregs[i]; - } - } else { - for (i = 8; i < 13; i++) { - env->regs[i] = env->xregs[i]; - } - } - - /* Registers r13 & r14 depend on the current mode. - * If we are in a given mode, we copy the corresponding x registers to r13 - * and r14. Otherwise, we copy the x register to the banked r13 and r14 - * for the mode. - */ - if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) { - env->regs[13] = env->xregs[13]; - env->regs[14] = env->xregs[14]; - } else { - env->banked_r13[bank_number(ARM_CPU_MODE_USR)] = env->xregs[13]; - - /* HYP is an exception in that it does not have its own banked r14 but - * shares the USR r14 - */ - if (mode == ARM_CPU_MODE_HYP) { - env->regs[14] = env->xregs[14]; - } else { - env->banked_r14[bank_number(ARM_CPU_MODE_USR)] = env->xregs[14]; - } - } - - if (mode == ARM_CPU_MODE_HYP) { - env->regs[13] = env->xregs[15]; - } else { - env->banked_r13[bank_number(ARM_CPU_MODE_HYP)] = env->xregs[15]; - } - - if (mode == ARM_CPU_MODE_IRQ) { - env->regs[14] = env->xregs[16]; - env->regs[13] = env->xregs[17]; - } else { - env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[16]; - env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[17]; - } - - if (mode == ARM_CPU_MODE_SVC) { - env->regs[14] = env->xregs[18]; - env->regs[13] = env->xregs[19]; - } else { - env->banked_r14[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[18]; - env->banked_r13[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[19]; - } - - if (mode == ARM_CPU_MODE_ABT) { - env->regs[14] = env->xregs[20]; - env->regs[13] = env->xregs[21]; - } else { - env->banked_r14[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[20]; - env->banked_r13[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[21]; - } - - if (mode == ARM_CPU_MODE_UND) { - env->regs[14] = env->xregs[22]; - env->regs[13] = env->xregs[23]; - } else { - env->banked_r14[bank_number(ARM_CPU_MODE_UND)] = env->xregs[22]; - env->banked_r13[bank_number(ARM_CPU_MODE_UND)] = env->xregs[23]; - } - - /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ - * mode, then we can copy to r8-r14. Otherwise, we copy to the - * FIQ bank for r8-r14. - */ - if (mode == ARM_CPU_MODE_FIQ) { - for (i = 24; i < 31; i++) { - env->regs[i - 16] = env->xregs[i]; /* X[24:30] -> R[8:14] */ - } - } else { - for (i = 24; i < 29; i++) { - env->fiq_regs[i - 24] = env->xregs[i]; - } - env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[29]; - env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[30]; - } - - env->regs[15] = env->pc; -} - -static void arm_cpu_do_interrupt_aarch32(CPUState *cs) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - uint32_t addr; - uint32_t mask; - int new_mode; - uint32_t offset; - uint32_t moe; - - /* If this is a debug exception we must update the DBGDSCR.MOE bits */ - switch (env->exception.syndrome >> ARM_EL_EC_SHIFT) { - case EC_BREAKPOINT: - case EC_BREAKPOINT_SAME_EL: - moe = 1; - break; - case EC_WATCHPOINT: - case EC_WATCHPOINT_SAME_EL: - moe = 10; - break; - case EC_AA32_BKPT: - moe = 3; - break; - case EC_VECTORCATCH: - moe = 5; - break; - default: - moe = 0; - break; - } - - if (moe) { - env->cp15.mdscr_el1 = deposit64(env->cp15.mdscr_el1, 2, 4, moe); - } - - /* TODO: Vectored interrupt controller. */ - switch (cs->exception_index) { - case EXCP_UDEF: - new_mode = ARM_CPU_MODE_UND; - addr = 0x04; - mask = CPSR_I; - if (env->thumb) - offset = 2; - else - offset = 4; - break; - case EXCP_SWI: - new_mode = ARM_CPU_MODE_SVC; - addr = 0x08; - mask = CPSR_I; - /* The PC already points to the next instruction. */ - offset = 0; - break; - case EXCP_BKPT: - env->exception.fsr = 2; - /* Fall through to prefetch abort. */ - case EXCP_PREFETCH_ABORT: - A32_BANKED_CURRENT_REG_SET(env, ifsr, env->exception.fsr); - A32_BANKED_CURRENT_REG_SET(env, ifar, env->exception.vaddress); - qemu_log_mask(CPU_LOG_INT, "...with IFSR 0x%x IFAR 0x%x\n", - env->exception.fsr, (uint32_t)env->exception.vaddress); - new_mode = ARM_CPU_MODE_ABT; - addr = 0x0c; - mask = CPSR_A | CPSR_I; - offset = 4; - break; - case EXCP_DATA_ABORT: - A32_BANKED_CURRENT_REG_SET(env, dfsr, env->exception.fsr); - A32_BANKED_CURRENT_REG_SET(env, dfar, env->exception.vaddress); - qemu_log_mask(CPU_LOG_INT, "...with DFSR 0x%x DFAR 0x%x\n", - env->exception.fsr, - (uint32_t)env->exception.vaddress); - new_mode = ARM_CPU_MODE_ABT; - addr = 0x10; - mask = CPSR_A | CPSR_I; - offset = 8; - break; - case EXCP_IRQ: - new_mode = ARM_CPU_MODE_IRQ; - addr = 0x18; - /* Disable IRQ and imprecise data aborts. */ - mask = CPSR_A | CPSR_I; - offset = 4; - if (env->cp15.scr_el3 & SCR_IRQ) { - /* IRQ routed to monitor mode */ - new_mode = ARM_CPU_MODE_MON; - mask |= CPSR_F; - } - break; - case EXCP_FIQ: - new_mode = ARM_CPU_MODE_FIQ; - addr = 0x1c; - /* Disable FIQ, IRQ and imprecise data aborts. */ - mask = CPSR_A | CPSR_I | CPSR_F; - if (env->cp15.scr_el3 & SCR_FIQ) { - /* FIQ routed to monitor mode */ - new_mode = ARM_CPU_MODE_MON; - } - offset = 4; - break; - case EXCP_SMC: - new_mode = ARM_CPU_MODE_MON; - addr = 0x08; - mask = CPSR_A | CPSR_I | CPSR_F; - offset = 0; - break; - default: - cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); - return; /* Never happens. Keep compiler happy. */ - } - - if (new_mode == ARM_CPU_MODE_MON) { - addr += env->cp15.mvbar; - } else if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) { - /* High vectors. When enabled, base address cannot be remapped. */ - addr += 0xffff0000; - } else { - /* ARM v7 architectures provide a vector base address register to remap - * the interrupt vector table. - * This register is only followed in non-monitor mode, and is banked. - * Note: only bits 31:5 are valid. - */ - addr += A32_BANKED_CURRENT_REG_GET(env, vbar); - } - - if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) { - env->cp15.scr_el3 &= ~SCR_NS; - } - - switch_mode (env, new_mode); - /* For exceptions taken to AArch32 we must clear the SS bit in both - * PSTATE and in the old-state value we save to SPSR_<mode>, so zero it now. - */ - env->uncached_cpsr &= ~PSTATE_SS; - env->spsr = cpsr_read(env); - /* Clear IT bits. */ - env->condexec_bits = 0; - /* Switch to the new mode, and to the correct instruction set. */ - env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode; - /* Set new mode endianness */ - env->uncached_cpsr &= ~CPSR_E; - if (env->cp15.sctlr_el[arm_current_el(env)] & SCTLR_EE) { - env->uncached_cpsr |= ~CPSR_E; - } - env->daif |= mask; - /* this is a lie, as the was no c1_sys on V4T/V5, but who cares - * and we should just guard the thumb mode on V4 */ - if (arm_feature(env, ARM_FEATURE_V4T)) { - env->thumb = (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_TE) != 0; - } - env->regs[14] = env->regs[15] + offset; - env->regs[15] = addr; -} - -/* Handle exception entry to a target EL which is using AArch64 */ -static void arm_cpu_do_interrupt_aarch64(CPUState *cs) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - unsigned int new_el = env->exception.target_el; - target_ulong addr = env->cp15.vbar_el[new_el]; - unsigned int new_mode = aarch64_pstate_mode(new_el, true); - - if (arm_current_el(env) < new_el) { - /* Entry vector offset depends on whether the implemented EL - * immediately lower than the target level is using AArch32 or AArch64 - */ - bool is_aa64; - - switch (new_el) { - case 3: - is_aa64 = (env->cp15.scr_el3 & SCR_RW) != 0; - break; - case 2: - is_aa64 = (env->cp15.hcr_el2 & HCR_RW) != 0; - break; - case 1: - is_aa64 = is_a64(env); - break; - default: - g_assert_not_reached(); - } - - if (is_aa64) { - addr += 0x400; - } else { - addr += 0x600; - } - } else if (pstate_read(env) & PSTATE_SP) { - addr += 0x200; - } - - switch (cs->exception_index) { - case EXCP_PREFETCH_ABORT: - case EXCP_DATA_ABORT: - env->cp15.far_el[new_el] = env->exception.vaddress; - qemu_log_mask(CPU_LOG_INT, "...with FAR 0x%" PRIx64 "\n", - env->cp15.far_el[new_el]); - /* fall through */ - case EXCP_BKPT: - case EXCP_UDEF: - case EXCP_SWI: - case EXCP_HVC: - case EXCP_HYP_TRAP: - case EXCP_SMC: - env->cp15.esr_el[new_el] = env->exception.syndrome; - break; - case EXCP_IRQ: - case EXCP_VIRQ: - addr += 0x80; - break; - case EXCP_FIQ: - case EXCP_VFIQ: - addr += 0x100; - break; - case EXCP_SEMIHOST: - qemu_log_mask(CPU_LOG_INT, - "...handling as semihosting call 0x%" PRIx64 "\n", - env->xregs[0]); - env->xregs[0] = do_arm_semihosting(env); - return; - default: - cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index); - } - - if (is_a64(env)) { - env->banked_spsr[aarch64_banked_spsr_index(new_el)] = pstate_read(env); - aarch64_save_sp(env, arm_current_el(env)); - env->elr_el[new_el] = env->pc; - } else { - env->banked_spsr[aarch64_banked_spsr_index(new_el)] = cpsr_read(env); - if (!env->thumb) { - env->cp15.esr_el[new_el] |= 1 << 25; - } - env->elr_el[new_el] = env->regs[15]; - - aarch64_sync_32_to_64(env); - - env->condexec_bits = 0; - } - qemu_log_mask(CPU_LOG_INT, "...with ELR 0x%" PRIx64 "\n", - env->elr_el[new_el]); - - pstate_write(env, PSTATE_DAIF | new_mode); - env->aarch64 = 1; - aarch64_restore_sp(env, new_el); - - env->pc = addr; - - qemu_log_mask(CPU_LOG_INT, "...to EL%d PC 0x%" PRIx64 " PSTATE 0x%x\n", - new_el, env->pc, pstate_read(env)); -} - -static inline bool check_for_semihosting(CPUState *cs) -{ - /* Check whether this exception is a semihosting call; if so - * then handle it and return true; otherwise return false. - */ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - - if (is_a64(env)) { - if (cs->exception_index == EXCP_SEMIHOST) { - /* This is always the 64-bit semihosting exception. - * The "is this usermode" and "is semihosting enabled" - * checks have been done at translate time. - */ - qemu_log_mask(CPU_LOG_INT, - "...handling as semihosting call 0x%" PRIx64 "\n", - env->xregs[0]); - env->xregs[0] = do_arm_semihosting(env); - return true; - } - return false; - } else { - uint32_t imm; - - /* Only intercept calls from privileged modes, to provide some - * semblance of security. - */ - if (!semihosting_enabled() || - ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)) { - return false; - } - - switch (cs->exception_index) { - case EXCP_SWI: - /* Check for semihosting interrupt. */ - if (env->thumb) { - imm = arm_lduw_code(env, env->regs[15] - 2, arm_sctlr_b(env)) - & 0xff; - if (imm == 0xab) { - break; - } - } else { - imm = arm_ldl_code(env, env->regs[15] - 4, arm_sctlr_b(env)) - & 0xffffff; - if (imm == 0x123456) { - break; - } - } - return false; - case EXCP_BKPT: - /* See if this is a semihosting syscall. */ - if (env->thumb) { - imm = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) - & 0xff; - if (imm == 0xab) { - env->regs[15] += 2; - break; - } - } - return false; - default: - return false; - } - - qemu_log_mask(CPU_LOG_INT, - "...handling as semihosting call 0x%x\n", - env->regs[0]); - env->regs[0] = do_arm_semihosting(env); - return true; - } -} - -/* Handle a CPU exception for A and R profile CPUs. - * Do any appropriate logging, handle PSCI calls, and then hand off - * to the AArch64-entry or AArch32-entry function depending on the - * target exception level's register width. - */ -void arm_cpu_do_interrupt(CPUState *cs) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - unsigned int new_el = env->exception.target_el; - - assert(!IS_M(env)); - - arm_log_exception(cs->exception_index); - qemu_log_mask(CPU_LOG_INT, "...from EL%d to EL%d\n", arm_current_el(env), - new_el); - if (qemu_loglevel_mask(CPU_LOG_INT) - && !excp_is_internal(cs->exception_index)) { - qemu_log_mask(CPU_LOG_INT, "...with ESR %x/0x%" PRIx32 "\n", - env->exception.syndrome >> ARM_EL_EC_SHIFT, - env->exception.syndrome); - } - - if (arm_is_psci_call(cpu, cs->exception_index)) { - arm_handle_psci_call(cpu); - qemu_log_mask(CPU_LOG_INT, "...handled as PSCI call\n"); - return; - } - - /* Semihosting semantics depend on the register width of the - * code that caused the exception, not the target exception level, - * so must be handled here. - */ - if (check_for_semihosting(cs)) { - return; - } - - assert(!excp_is_internal(cs->exception_index)); - if (arm_el_is_aa64(env, new_el)) { - arm_cpu_do_interrupt_aarch64(cs); - } else { - arm_cpu_do_interrupt_aarch32(cs); - } - - if (!kvm_enabled()) { - cs->interrupt_request |= CPU_INTERRUPT_EXITTB; - } -} - -/* Return the exception level which controls this address translation regime */ -static inline uint32_t regime_el(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - switch (mmu_idx) { - case ARMMMUIdx_S2NS: - case ARMMMUIdx_S1E2: - return 2; - case ARMMMUIdx_S1E3: - return 3; - case ARMMMUIdx_S1SE0: - return arm_el_is_aa64(env, 3) ? 1 : 3; - case ARMMMUIdx_S1SE1: - case ARMMMUIdx_S1NSE0: - case ARMMMUIdx_S1NSE1: - return 1; - default: - g_assert_not_reached(); - } -} - -/* Return true if this address translation regime is secure */ -static inline bool regime_is_secure(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - switch (mmu_idx) { - case ARMMMUIdx_S12NSE0: - case ARMMMUIdx_S12NSE1: - case ARMMMUIdx_S1NSE0: - case ARMMMUIdx_S1NSE1: - case ARMMMUIdx_S1E2: - case ARMMMUIdx_S2NS: - return false; - case ARMMMUIdx_S1E3: - case ARMMMUIdx_S1SE0: - case ARMMMUIdx_S1SE1: - return true; - default: - g_assert_not_reached(); - } -} - -/* Return the SCTLR value which controls this address translation regime */ -static inline uint32_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - return env->cp15.sctlr_el[regime_el(env, mmu_idx)]; -} - -/* Return true if the specified stage of address translation is disabled */ -static inline bool regime_translation_disabled(CPUARMState *env, - ARMMMUIdx mmu_idx) -{ - if (mmu_idx == ARMMMUIdx_S2NS) { - return (env->cp15.hcr_el2 & HCR_VM) == 0; - } - return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0; -} - -static inline bool regime_translation_big_endian(CPUARMState *env, - ARMMMUIdx mmu_idx) -{ - return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0; -} - -/* Return the TCR controlling this translation regime */ -static inline TCR *regime_tcr(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - if (mmu_idx == ARMMMUIdx_S2NS) { - return &env->cp15.vtcr_el2; - } - return &env->cp15.tcr_el[regime_el(env, mmu_idx)]; -} - -/* Return the TTBR associated with this translation regime */ -static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, - int ttbrn) -{ - if (mmu_idx == ARMMMUIdx_S2NS) { - return env->cp15.vttbr_el2; - } - if (ttbrn == 0) { - return env->cp15.ttbr0_el[regime_el(env, mmu_idx)]; - } else { - return env->cp15.ttbr1_el[regime_el(env, mmu_idx)]; - } -} - -/* Return true if the translation regime is using LPAE format page tables */ -static inline bool regime_using_lpae_format(CPUARMState *env, - ARMMMUIdx mmu_idx) -{ - int el = regime_el(env, mmu_idx); - if (el == 2 || arm_el_is_aa64(env, el)) { - return true; - } - if (arm_feature(env, ARM_FEATURE_LPAE) - && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) { - return true; - } - return false; -} - -/* Returns true if the stage 1 translation regime is using LPAE format page - * tables. Used when raising alignment exceptions, whose FSR changes depending - * on whether the long or short descriptor format is in use. */ -bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) { - mmu_idx += ARMMMUIdx_S1NSE0; - } - - return regime_using_lpae_format(env, mmu_idx); -} - -static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx) -{ - switch (mmu_idx) { - case ARMMMUIdx_S1SE0: - case ARMMMUIdx_S1NSE0: - return true; - default: - return false; - case ARMMMUIdx_S12NSE0: - case ARMMMUIdx_S12NSE1: - g_assert_not_reached(); - } -} - -/* Translate section/page access permissions to page - * R/W protection flags - * - * @env: CPUARMState - * @mmu_idx: MMU index indicating required translation regime - * @ap: The 3-bit access permissions (AP[2:0]) - * @domain_prot: The 2-bit domain access permissions - */ -static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, - int ap, int domain_prot) -{ - bool is_user = regime_is_user(env, mmu_idx); - - if (domain_prot == 3) { - return PAGE_READ | PAGE_WRITE; - } - - switch (ap) { - case 0: - if (arm_feature(env, ARM_FEATURE_V7)) { - return 0; - } - switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) { - case SCTLR_S: - return is_user ? 0 : PAGE_READ; - case SCTLR_R: - return PAGE_READ; - default: - return 0; - } - case 1: - return is_user ? 0 : PAGE_READ | PAGE_WRITE; - case 2: - if (is_user) { - return PAGE_READ; - } else { - return PAGE_READ | PAGE_WRITE; - } - case 3: - return PAGE_READ | PAGE_WRITE; - case 4: /* Reserved. */ - return 0; - case 5: - return is_user ? 0 : PAGE_READ; - case 6: - return PAGE_READ; - case 7: - if (!arm_feature(env, ARM_FEATURE_V6K)) { - return 0; - } - return PAGE_READ; - default: - g_assert_not_reached(); - } -} - -/* Translate section/page access permissions to page - * R/W protection flags. - * - * @ap: The 2-bit simple AP (AP[2:1]) - * @is_user: TRUE if accessing from PL0 - */ -static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user) -{ - switch (ap) { - case 0: - return is_user ? 0 : PAGE_READ | PAGE_WRITE; - case 1: - return PAGE_READ | PAGE_WRITE; - case 2: - return is_user ? 0 : PAGE_READ; - case 3: - return PAGE_READ; - default: - g_assert_not_reached(); - } -} - -static inline int -simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap) -{ - return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx)); -} - -/* Translate S2 section/page access permissions to protection flags - * - * @env: CPUARMState - * @s2ap: The 2-bit stage2 access permissions (S2AP) - * @xn: XN (execute-never) bit - */ -static int get_S2prot(CPUARMState *env, int s2ap, int xn) -{ - int prot = 0; - - if (s2ap & 1) { - prot |= PAGE_READ; - } - if (s2ap & 2) { - prot |= PAGE_WRITE; - } - if (!xn) { - prot |= PAGE_EXEC; - } - return prot; -} - -/* Translate section/page access permissions to protection flags - * - * @env: CPUARMState - * @mmu_idx: MMU index indicating required translation regime - * @is_aa64: TRUE if AArch64 - * @ap: The 2-bit simple AP (AP[2:1]) - * @ns: NS (non-secure) bit - * @xn: XN (execute-never) bit - * @pxn: PXN (privileged execute-never) bit - */ -static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64, - int ap, int ns, int xn, int pxn) -{ - bool is_user = regime_is_user(env, mmu_idx); - int prot_rw, user_rw; - bool have_wxn; - int wxn = 0; - - assert(mmu_idx != ARMMMUIdx_S2NS); - - user_rw = simple_ap_to_rw_prot_is_user(ap, true); - if (is_user) { - prot_rw = user_rw; - } else { - prot_rw = simple_ap_to_rw_prot_is_user(ap, false); - } - - if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) { - return prot_rw; - } - - /* TODO have_wxn should be replaced with - * ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2) - * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE - * compatible processors have EL2, which is required for [U]WXN. - */ - have_wxn = arm_feature(env, ARM_FEATURE_LPAE); - - if (have_wxn) { - wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN; - } - - if (is_aa64) { - switch (regime_el(env, mmu_idx)) { - case 1: - if (!is_user) { - xn = pxn || (user_rw & PAGE_WRITE); - } - break; - case 2: - case 3: - break; - } - } else if (arm_feature(env, ARM_FEATURE_V7)) { - switch (regime_el(env, mmu_idx)) { - case 1: - case 3: - if (is_user) { - xn = xn || !(user_rw & PAGE_READ); - } else { - int uwxn = 0; - if (have_wxn) { - uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN; - } - xn = xn || !(prot_rw & PAGE_READ) || pxn || - (uwxn && (user_rw & PAGE_WRITE)); - } - break; - case 2: - break; - } - } else { - xn = wxn = 0; - } - - if (xn || (wxn && (prot_rw & PAGE_WRITE))) { - return prot_rw; - } - return prot_rw | PAGE_EXEC; -} - -static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx, - uint32_t *table, uint32_t address) -{ - /* Note that we can only get here for an AArch32 PL0/PL1 lookup */ - TCR *tcr = regime_tcr(env, mmu_idx); - - if (address & tcr->mask) { - if (tcr->raw_tcr & TTBCR_PD1) { - /* Translation table walk disabled for TTBR1 */ - return false; - } - *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000; - } else { - if (tcr->raw_tcr & TTBCR_PD0) { - /* Translation table walk disabled for TTBR0 */ - return false; - } - *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask; - } - *table |= (address >> 18) & 0x3ffc; - return true; -} - -/* Translate a S1 pagetable walk through S2 if needed. */ -static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, - hwaddr addr, MemTxAttrs txattrs, - uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - if ((mmu_idx == ARMMMUIdx_S1NSE0 || mmu_idx == ARMMMUIdx_S1NSE1) && - !regime_translation_disabled(env, ARMMMUIdx_S2NS)) { - target_ulong s2size; - hwaddr s2pa; - int s2prot; - int ret; - - ret = get_phys_addr_lpae(env, addr, 0, ARMMMUIdx_S2NS, &s2pa, - &txattrs, &s2prot, &s2size, fsr, fi); - if (ret) { - fi->s2addr = addr; - fi->stage2 = true; - fi->s1ptw = true; - return ~0; - } - addr = s2pa; - } - return addr; -} - -/* All loads done in the course of a page table walk go through here. - * TODO: rather than ignoring errors from physical memory reads (which - * are external aborts in ARM terminology) we should propagate this - * error out so that we can turn it into a Data Abort if this walk - * was being done for a CPU load/store or an address translation instruction - * (but not if it was for a debug access). - */ -static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - MemTxAttrs attrs = {}; - AddressSpace *as; - - attrs.secure = is_secure; - as = arm_addressspace(cs, attrs); - addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi); - if (fi->s1ptw) { - return 0; - } - if (regime_translation_big_endian(env, mmu_idx)) { - return address_space_ldl_be(as, addr, attrs, NULL); - } else { - return address_space_ldl_le(as, addr, attrs, NULL); - } -} - -static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - MemTxAttrs attrs = {}; - AddressSpace *as; - - attrs.secure = is_secure; - as = arm_addressspace(cs, attrs); - addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi); - if (fi->s1ptw) { - return 0; - } - if (regime_translation_big_endian(env, mmu_idx)) { - return address_space_ldq_be(as, addr, attrs, NULL); - } else { - return address_space_ldq_le(as, addr, attrs, NULL); - } -} - -static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, int *prot, - target_ulong *page_size, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - int code; - uint32_t table; - uint32_t desc; - int type; - int ap; - int domain = 0; - int domain_prot; - hwaddr phys_addr; - uint32_t dacr; - - /* Pagetable walk. */ - /* Lookup l1 descriptor. */ - if (!get_level1_table_address(env, mmu_idx, &table, address)) { - /* Section translation fault if page walk is disabled by PD0 or PD1 */ - code = 5; - goto do_fault; - } - desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); - type = (desc & 3); - domain = (desc >> 5) & 0x0f; - if (regime_el(env, mmu_idx) == 1) { - dacr = env->cp15.dacr_ns; - } else { - dacr = env->cp15.dacr_s; - } - domain_prot = (dacr >> (domain * 2)) & 3; - if (type == 0) { - /* Section translation fault. */ - code = 5; - goto do_fault; - } - if (domain_prot == 0 || domain_prot == 2) { - if (type == 2) - code = 9; /* Section domain fault. */ - else - code = 11; /* Page domain fault. */ - goto do_fault; - } - if (type == 2) { - /* 1Mb section. */ - phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); - ap = (desc >> 10) & 3; - code = 13; - *page_size = 1024 * 1024; - } else { - /* Lookup l2 entry. */ - if (type == 1) { - /* Coarse pagetable. */ - table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); - } else { - /* Fine pagetable. */ - table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); - } - desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); - switch (desc & 3) { - case 0: /* Page translation fault. */ - code = 7; - goto do_fault; - case 1: /* 64k page. */ - phys_addr = (desc & 0xffff0000) | (address & 0xffff); - ap = (desc >> (4 + ((address >> 13) & 6))) & 3; - *page_size = 0x10000; - break; - case 2: /* 4k page. */ - phys_addr = (desc & 0xfffff000) | (address & 0xfff); - ap = (desc >> (4 + ((address >> 9) & 6))) & 3; - *page_size = 0x1000; - break; - case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */ - if (type == 1) { - /* ARMv6/XScale extended small page format */ - if (arm_feature(env, ARM_FEATURE_XSCALE) - || arm_feature(env, ARM_FEATURE_V6)) { - phys_addr = (desc & 0xfffff000) | (address & 0xfff); - *page_size = 0x1000; - } else { - /* UNPREDICTABLE in ARMv5; we choose to take a - * page translation fault. - */ - code = 7; - goto do_fault; - } - } else { - phys_addr = (desc & 0xfffffc00) | (address & 0x3ff); - *page_size = 0x400; - } - ap = (desc >> 4) & 3; - break; - default: - /* Never happens, but compiler isn't smart enough to tell. */ - abort(); - } - code = 15; - } - *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot); - *prot |= *prot ? PAGE_EXEC : 0; - if (!(*prot & (1 << access_type))) { - /* Access permission fault. */ - goto do_fault; - } - *phys_ptr = phys_addr; - return false; -do_fault: - *fsr = code | (domain << 4); - return true; -} - -static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, - target_ulong *page_size, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - CPUState *cs = CPU(arm_env_get_cpu(env)); - int code; - uint32_t table; - uint32_t desc; - uint32_t xn; - uint32_t pxn = 0; - int type; - int ap; - int domain = 0; - int domain_prot; - hwaddr phys_addr; - uint32_t dacr; - bool ns; - - /* Pagetable walk. */ - /* Lookup l1 descriptor. */ - if (!get_level1_table_address(env, mmu_idx, &table, address)) { - /* Section translation fault if page walk is disabled by PD0 or PD1 */ - code = 5; - goto do_fault; - } - desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); - type = (desc & 3); - if (type == 0 || (type == 3 && !arm_feature(env, ARM_FEATURE_PXN))) { - /* Section translation fault, or attempt to use the encoding - * which is Reserved on implementations without PXN. - */ - code = 5; - goto do_fault; - } - if ((type == 1) || !(desc & (1 << 18))) { - /* Page or Section. */ - domain = (desc >> 5) & 0x0f; - } - if (regime_el(env, mmu_idx) == 1) { - dacr = env->cp15.dacr_ns; - } else { - dacr = env->cp15.dacr_s; - } - domain_prot = (dacr >> (domain * 2)) & 3; - if (domain_prot == 0 || domain_prot == 2) { - if (type != 1) { - code = 9; /* Section domain fault. */ - } else { - code = 11; /* Page domain fault. */ - } - goto do_fault; - } - if (type != 1) { - if (desc & (1 << 18)) { - /* Supersection. */ - phys_addr = (desc & 0xff000000) | (address & 0x00ffffff); - phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32; - phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36; - *page_size = 0x1000000; - } else { - /* Section. */ - phys_addr = (desc & 0xfff00000) | (address & 0x000fffff); - *page_size = 0x100000; - } - ap = ((desc >> 10) & 3) | ((desc >> 13) & 4); - xn = desc & (1 << 4); - pxn = desc & 1; - code = 13; - ns = extract32(desc, 19, 1); - } else { - if (arm_feature(env, ARM_FEATURE_PXN)) { - pxn = (desc >> 2) & 1; - } - ns = extract32(desc, 3, 1); - /* Lookup l2 entry. */ - table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); - desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); - ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); - switch (desc & 3) { - case 0: /* Page translation fault. */ - code = 7; - goto do_fault; - case 1: /* 64k page. */ - phys_addr = (desc & 0xffff0000) | (address & 0xffff); - xn = desc & (1 << 15); - *page_size = 0x10000; - break; - case 2: case 3: /* 4k page. */ - phys_addr = (desc & 0xfffff000) | (address & 0xfff); - xn = desc & 1; - *page_size = 0x1000; - break; - default: - /* Never happens, but compiler isn't smart enough to tell. */ - abort(); - } - code = 15; - } - if (domain_prot == 3) { - *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - } else { - if (pxn && !regime_is_user(env, mmu_idx)) { - xn = 1; - } - if (xn && access_type == 2) - goto do_fault; - - if (arm_feature(env, ARM_FEATURE_V6K) && - (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) { - /* The simplified model uses AP[0] as an access control bit. */ - if ((ap & 1) == 0) { - /* Access flag fault. */ - code = (code == 15) ? 6 : 3; - goto do_fault; - } - *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1); - } else { - *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot); - } - if (*prot && !xn) { - *prot |= PAGE_EXEC; - } - if (!(*prot & (1 << access_type))) { - /* Access permission fault. */ - goto do_fault; - } - } - if (ns) { - /* The NS bit will (as required by the architecture) have no effect if - * the CPU doesn't support TZ or this is a non-secure translation - * regime, because the attribute will already be non-secure. - */ - attrs->secure = false; - } - *phys_ptr = phys_addr; - return false; -do_fault: - *fsr = code | (domain << 4); - return true; -} - -/* Fault type for long-descriptor MMU fault reporting; this corresponds - * to bits [5..2] in the STATUS field in long-format DFSR/IFSR. - */ -typedef enum { - translation_fault = 1, - access_fault = 2, - permission_fault = 3, -} MMUFaultType; - -/* - * check_s2_mmu_setup - * @cpu: ARMCPU - * @is_aa64: True if the translation regime is in AArch64 state - * @startlevel: Suggested starting level - * @inputsize: Bitsize of IPAs - * @stride: Page-table stride (See the ARM ARM) - * - * Returns true if the suggested S2 translation parameters are OK and - * false otherwise. - */ -static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level, - int inputsize, int stride) -{ - const int grainsize = stride + 3; - int startsizecheck; - - /* Negative levels are never allowed. */ - if (level < 0) { - return false; - } - - startsizecheck = inputsize - ((3 - level) * stride + grainsize); - if (startsizecheck < 1 || startsizecheck > stride + 4) { - return false; - } - - if (is_aa64) { - CPUARMState *env = &cpu->env; - unsigned int pamax = arm_pamax(cpu); - - switch (stride) { - case 13: /* 64KB Pages. */ - if (level == 0 || (level == 1 && pamax <= 42)) { - return false; - } - break; - case 11: /* 16KB Pages. */ - if (level == 0 || (level == 1 && pamax <= 40)) { - return false; - } - break; - case 9: /* 4KB Pages. */ - if (level == 0 && pamax <= 42) { - return false; - } - break; - default: - g_assert_not_reached(); - } - - /* Inputsize checks. */ - if (inputsize > pamax && - (arm_el_is_aa64(env, 1) || inputsize > 40)) { - /* This is CONSTRAINED UNPREDICTABLE and we choose to fault. */ - return false; - } - } else { - /* AArch32 only supports 4KB pages. Assert on that. */ - assert(stride == 9); - - if (level == 0) { - return false; - } - } - return true; -} - -static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot, - target_ulong *page_size_ptr, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - CPUState *cs = CPU(cpu); - /* Read an LPAE long-descriptor translation table. */ - MMUFaultType fault_type = translation_fault; - uint32_t level; - uint32_t epd = 0; - int32_t t0sz, t1sz; - uint32_t tg; - uint64_t ttbr; - int ttbr_select; - hwaddr descaddr, descmask; - uint32_t tableattrs; - target_ulong page_size; - uint32_t attrs; - int32_t stride = 9; - int32_t va_size; - int inputsize; - int32_t tbi = 0; - TCR *tcr = regime_tcr(env, mmu_idx); - int ap, ns, xn, pxn; - uint32_t el = regime_el(env, mmu_idx); - bool ttbr1_valid = true; - uint64_t descaddrmask; - - /* TODO: - * This code does not handle the different format TCR for VTCR_EL2. - * This code also does not support shareability levels. - * Attribute and permission bit handling should also be checked when adding - * support for those page table walks. - */ - if (arm_el_is_aa64(env, el)) { - level = 0; - va_size = 64; - if (el > 1) { - if (mmu_idx != ARMMMUIdx_S2NS) { - tbi = extract64(tcr->raw_tcr, 20, 1); - } - } else { - if (extract64(address, 55, 1)) { - tbi = extract64(tcr->raw_tcr, 38, 1); - } else { - tbi = extract64(tcr->raw_tcr, 37, 1); - } - } - tbi *= 8; - - /* If we are in 64-bit EL2 or EL3 then there is no TTBR1, so mark it - * invalid. - */ - if (el > 1) { - ttbr1_valid = false; - } - } else { - level = 1; - va_size = 32; - /* There is no TTBR1 for EL2 */ - if (el == 2) { - ttbr1_valid = false; - } - } - - /* Determine whether this address is in the region controlled by - * TTBR0 or TTBR1 (or if it is in neither region and should fault). - * This is a Non-secure PL0/1 stage 1 translation, so controlled by - * TTBCR/TTBR0/TTBR1 in accordance with ARM ARM DDI0406C table B-32: - */ - if (va_size == 64) { - /* AArch64 translation. */ - t0sz = extract32(tcr->raw_tcr, 0, 6); - t0sz = MIN(t0sz, 39); - t0sz = MAX(t0sz, 16); - } else if (mmu_idx != ARMMMUIdx_S2NS) { - /* AArch32 stage 1 translation. */ - t0sz = extract32(tcr->raw_tcr, 0, 3); - } else { - /* AArch32 stage 2 translation. */ - bool sext = extract32(tcr->raw_tcr, 4, 1); - bool sign = extract32(tcr->raw_tcr, 3, 1); - t0sz = sextract32(tcr->raw_tcr, 0, 4); - - /* If the sign-extend bit is not the same as t0sz[3], the result - * is unpredictable. Flag this as a guest error. */ - if (sign != sext) { - qemu_log_mask(LOG_GUEST_ERROR, - "AArch32: VTCR.S / VTCR.T0SZ[3] missmatch\n"); - } - } - t1sz = extract32(tcr->raw_tcr, 16, 6); - if (va_size == 64) { - t1sz = MIN(t1sz, 39); - t1sz = MAX(t1sz, 16); - } - if (t0sz && !extract64(address, va_size - t0sz, t0sz - tbi)) { - /* there is a ttbr0 region and we are in it (high bits all zero) */ - ttbr_select = 0; - } else if (ttbr1_valid && t1sz && - !extract64(~address, va_size - t1sz, t1sz - tbi)) { - /* there is a ttbr1 region and we are in it (high bits all one) */ - ttbr_select = 1; - } else if (!t0sz) { - /* ttbr0 region is "everything not in the ttbr1 region" */ - ttbr_select = 0; - } else if (!t1sz && ttbr1_valid) { - /* ttbr1 region is "everything not in the ttbr0 region" */ - ttbr_select = 1; - } else { - /* in the gap between the two regions, this is a Translation fault */ - fault_type = translation_fault; - goto do_fault; - } - - /* Note that QEMU ignores shareability and cacheability attributes, - * so we don't need to do anything with the SH, ORGN, IRGN fields - * in the TTBCR. Similarly, TTBCR:A1 selects whether we get the - * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently - * implement any ASID-like capability so we can ignore it (instead - * we will always flush the TLB any time the ASID is changed). - */ - if (ttbr_select == 0) { - ttbr = regime_ttbr(env, mmu_idx, 0); - if (el < 2) { - epd = extract32(tcr->raw_tcr, 7, 1); - } - inputsize = va_size - t0sz; - - tg = extract32(tcr->raw_tcr, 14, 2); - if (tg == 1) { /* 64KB pages */ - stride = 13; - } - if (tg == 2) { /* 16KB pages */ - stride = 11; - } - } else { - /* We should only be here if TTBR1 is valid */ - assert(ttbr1_valid); - - ttbr = regime_ttbr(env, mmu_idx, 1); - epd = extract32(tcr->raw_tcr, 23, 1); - inputsize = va_size - t1sz; - - tg = extract32(tcr->raw_tcr, 30, 2); - if (tg == 3) { /* 64KB pages */ - stride = 13; - } - if (tg == 1) { /* 16KB pages */ - stride = 11; - } - } - - /* Here we should have set up all the parameters for the translation: - * va_size, inputsize, ttbr, epd, stride, tbi - */ - - if (epd) { - /* Translation table walk disabled => Translation fault on TLB miss - * Note: This is always 0 on 64-bit EL2 and EL3. - */ - goto do_fault; - } - - if (mmu_idx != ARMMMUIdx_S2NS) { - /* The starting level depends on the virtual address size (which can - * be up to 48 bits) and the translation granule size. It indicates - * the number of strides (stride bits at a time) needed to - * consume the bits of the input address. In the pseudocode this is: - * level = 4 - RoundUp((inputsize - grainsize) / stride) - * where their 'inputsize' is our 'inputsize', 'grainsize' is - * our 'stride + 3' and 'stride' is our 'stride'. - * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying: - * = 4 - (inputsize - stride - 3 + stride - 1) / stride - * = 4 - (inputsize - 4) / stride; - */ - level = 4 - (inputsize - 4) / stride; - } else { - /* For stage 2 translations the starting level is specified by the - * VTCR_EL2.SL0 field (whose interpretation depends on the page size) - */ - uint32_t sl0 = extract32(tcr->raw_tcr, 6, 2); - uint32_t startlevel; - bool ok; - - if (va_size == 32 || stride == 9) { - /* AArch32 or 4KB pages */ - startlevel = 2 - sl0; - } else { - /* 16KB or 64KB pages */ - startlevel = 3 - sl0; - } - - /* Check that the starting level is valid. */ - ok = check_s2_mmu_setup(cpu, va_size == 64, startlevel, - inputsize, stride); - if (!ok) { - fault_type = translation_fault; - goto do_fault; - } - level = startlevel; - } - - /* Clear the vaddr bits which aren't part of the within-region address, - * so that we don't have to special case things when calculating the - * first descriptor address. - */ - if (va_size != inputsize) { - address &= (1ULL << inputsize) - 1; - } - - descmask = (1ULL << (stride + 3)) - 1; - - /* Now we can extract the actual base address from the TTBR */ - descaddr = extract64(ttbr, 0, 48); - descaddr &= ~((1ULL << (inputsize - (stride * (4 - level)))) - 1); - - /* The address field in the descriptor goes up to bit 39 for ARMv7 - * but up to bit 47 for ARMv8. - */ - if (arm_feature(env, ARM_FEATURE_V8)) { - descaddrmask = 0xfffffffff000ULL; - } else { - descaddrmask = 0xfffffff000ULL; - } - - /* Secure accesses start with the page table in secure memory and - * can be downgraded to non-secure at any step. Non-secure accesses - * remain non-secure. We implement this by just ORing in the NSTable/NS - * bits at each step. - */ - tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4); - for (;;) { - uint64_t descriptor; - bool nstable; - - descaddr |= (address >> (stride * (4 - level))) & descmask; - descaddr &= ~7ULL; - nstable = extract32(tableattrs, 4, 1); - descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fsr, fi); - if (fi->s1ptw) { - goto do_fault; - } - - if (!(descriptor & 1) || - (!(descriptor & 2) && (level == 3))) { - /* Invalid, or the Reserved level 3 encoding */ - goto do_fault; - } - descaddr = descriptor & descaddrmask; - - if ((descriptor & 2) && (level < 3)) { - /* Table entry. The top five bits are attributes which may - * propagate down through lower levels of the table (and - * which are all arranged so that 0 means "no effect", so - * we can gather them up by ORing in the bits at each level). - */ - tableattrs |= extract64(descriptor, 59, 5); - level++; - continue; - } - /* Block entry at level 1 or 2, or page entry at level 3. - * These are basically the same thing, although the number - * of bits we pull in from the vaddr varies. - */ - page_size = (1ULL << ((stride * (4 - level)) + 3)); - descaddr |= (address & (page_size - 1)); - /* Extract attributes from the descriptor */ - attrs = extract64(descriptor, 2, 10) - | (extract64(descriptor, 52, 12) << 10); - - if (mmu_idx == ARMMMUIdx_S2NS) { - /* Stage 2 table descriptors do not include any attribute fields */ - break; - } - /* Merge in attributes from table descriptors */ - attrs |= extract32(tableattrs, 0, 2) << 11; /* XN, PXN */ - attrs |= extract32(tableattrs, 3, 1) << 5; /* APTable[1] => AP[2] */ - /* The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1 - * means "force PL1 access only", which means forcing AP[1] to 0. - */ - if (extract32(tableattrs, 2, 1)) { - attrs &= ~(1 << 4); - } - attrs |= nstable << 3; /* NS */ - break; - } - /* Here descaddr is the final physical address, and attributes - * are all in attrs. - */ - fault_type = access_fault; - if ((attrs & (1 << 8)) == 0) { - /* Access flag */ - goto do_fault; - } - - ap = extract32(attrs, 4, 2); - xn = extract32(attrs, 12, 1); - - if (mmu_idx == ARMMMUIdx_S2NS) { - ns = true; - *prot = get_S2prot(env, ap, xn); - } else { - ns = extract32(attrs, 3, 1); - pxn = extract32(attrs, 11, 1); - *prot = get_S1prot(env, mmu_idx, va_size == 64, ap, ns, xn, pxn); - } - - fault_type = permission_fault; - if (!(*prot & (1 << access_type))) { - goto do_fault; - } - - if (ns) { - /* The NS bit will (as required by the architecture) have no effect if - * the CPU doesn't support TZ or this is a non-secure translation - * regime, because the attribute will already be non-secure. - */ - txattrs->secure = false; - } - *phys_ptr = descaddr; - *page_size_ptr = page_size; - return false; - -do_fault: - /* Long-descriptor format IFSR/DFSR value */ - *fsr = (1 << 9) | (fault_type << 2) | level; - /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2. */ - fi->stage2 = fi->s1ptw || (mmu_idx == ARMMMUIdx_S2NS); - return true; -} - -static inline void get_phys_addr_pmsav7_default(CPUARMState *env, - ARMMMUIdx mmu_idx, - int32_t address, int *prot) -{ - *prot = PAGE_READ | PAGE_WRITE; - switch (address) { - case 0xF0000000 ... 0xFFFFFFFF: - if (regime_sctlr(env, mmu_idx) & SCTLR_V) { /* hivecs execing is ok */ - *prot |= PAGE_EXEC; - } - break; - case 0x00000000 ... 0x7FFFFFFF: - *prot |= PAGE_EXEC; - break; - } - -} - -static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, int *prot, uint32_t *fsr) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - int n; - bool is_user = regime_is_user(env, mmu_idx); - - *phys_ptr = address; - *prot = 0; - - if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */ - get_phys_addr_pmsav7_default(env, mmu_idx, address, prot); - } else { /* MPU enabled */ - for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) { - /* region search */ - uint32_t base = env->pmsav7.drbar[n]; - uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5); - uint32_t rmask; - bool srdis = false; - - if (!(env->pmsav7.drsr[n] & 0x1)) { - continue; - } - - if (!rsize) { - qemu_log_mask(LOG_GUEST_ERROR, "DRSR.Rsize field can not be 0"); - continue; - } - rsize++; - rmask = (1ull << rsize) - 1; - - if (base & rmask) { - qemu_log_mask(LOG_GUEST_ERROR, "DRBAR %" PRIx32 " misaligned " - "to DRSR region size, mask = %" PRIx32, - base, rmask); - continue; - } - - if (address < base || address > base + rmask) { - continue; - } - - /* Region matched */ - - if (rsize >= 8) { /* no subregions for regions < 256 bytes */ - int i, snd; - uint32_t srdis_mask; - - rsize -= 3; /* sub region size (power of 2) */ - snd = ((address - base) >> rsize) & 0x7; - srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1); - - srdis_mask = srdis ? 0x3 : 0x0; - for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) { - /* This will check in groups of 2, 4 and then 8, whether - * the subregion bits are consistent. rsize is incremented - * back up to give the region size, considering consistent - * adjacent subregions as one region. Stop testing if rsize - * is already big enough for an entire QEMU page. - */ - int snd_rounded = snd & ~(i - 1); - uint32_t srdis_multi = extract32(env->pmsav7.drsr[n], - snd_rounded + 8, i); - if (srdis_mask ^ srdis_multi) { - break; - } - srdis_mask = (srdis_mask << i) | srdis_mask; - rsize++; - } - } - if (rsize < TARGET_PAGE_BITS) { - qemu_log_mask(LOG_UNIMP, "No support for MPU (sub)region" - "alignment of %" PRIu32 " bits. Minimum is %d\n", - rsize, TARGET_PAGE_BITS); - continue; - } - if (srdis) { - continue; - } - break; - } - - if (n == -1) { /* no hits */ - if (cpu->pmsav7_dregion && - (is_user || !(regime_sctlr(env, mmu_idx) & SCTLR_BR))) { - /* background fault */ - *fsr = 0; - return true; - } - get_phys_addr_pmsav7_default(env, mmu_idx, address, prot); - } else { /* a MPU hit! */ - uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3); - - if (is_user) { /* User mode AP bit decoding */ - switch (ap) { - case 0: - case 1: - case 5: - break; /* no access */ - case 3: - *prot |= PAGE_WRITE; - /* fall through */ - case 2: - case 6: - *prot |= PAGE_READ | PAGE_EXEC; - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, - "Bad value for AP bits in DRACR %" - PRIx32 "\n", ap); - } - } else { /* Priv. mode AP bits decoding */ - switch (ap) { - case 0: - break; /* no access */ - case 1: - case 2: - case 3: - *prot |= PAGE_WRITE; - /* fall through */ - case 5: - case 6: - *prot |= PAGE_READ | PAGE_EXEC; - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, - "Bad value for AP bits in DRACR %" - PRIx32 "\n", ap); - } - } - - /* execute never */ - if (env->pmsav7.dracr[n] & (1 << 12)) { - *prot &= ~PAGE_EXEC; - } - } - } - - *fsr = 0x00d; /* Permission fault */ - return !(*prot & (1 << access_type)); -} - -static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, int *prot, uint32_t *fsr) -{ - int n; - uint32_t mask; - uint32_t base; - bool is_user = regime_is_user(env, mmu_idx); - - *phys_ptr = address; - for (n = 7; n >= 0; n--) { - base = env->cp15.c6_region[n]; - if ((base & 1) == 0) { - continue; - } - mask = 1 << ((base >> 1) & 0x1f); - /* Keep this shift separate from the above to avoid an - (undefined) << 32. */ - mask = (mask << 1) - 1; - if (((base ^ address) & ~mask) == 0) { - break; - } - } - if (n < 0) { - *fsr = 2; - return true; - } - - if (access_type == 2) { - mask = env->cp15.pmsav5_insn_ap; - } else { - mask = env->cp15.pmsav5_data_ap; - } - mask = (mask >> (n * 4)) & 0xf; - switch (mask) { - case 0: - *fsr = 1; - return true; - case 1: - if (is_user) { - *fsr = 1; - return true; - } - *prot = PAGE_READ | PAGE_WRITE; - break; - case 2: - *prot = PAGE_READ; - if (!is_user) { - *prot |= PAGE_WRITE; - } - break; - case 3: - *prot = PAGE_READ | PAGE_WRITE; - break; - case 5: - if (is_user) { - *fsr = 1; - return true; - } - *prot = PAGE_READ; - break; - case 6: - *prot = PAGE_READ; - break; - default: - /* Bad permission. */ - *fsr = 1; - return true; - } - *prot |= PAGE_EXEC; - return false; -} - -/* get_phys_addr - get the physical address for this virtual address - * - * Find the physical address corresponding to the given virtual address, - * by doing a translation table walk on MMU based systems or using the - * MPU state on MPU based systems. - * - * Returns false if the translation was successful. Otherwise, phys_ptr, attrs, - * prot and page_size may not be filled in, and the populated fsr value provides - * information on why the translation aborted, in the format of a - * DFSR/IFSR fault register, with the following caveats: - * * we honour the short vs long DFSR format differences. - * * the WnR bit is never set (the caller must do this). - * * for PSMAv5 based systems we don't bother to return a full FSR format - * value. - * - * @env: CPUARMState - * @address: virtual address to get physical address for - * @access_type: 0 for read, 1 for write, 2 for execute - * @mmu_idx: MMU index indicating required translation regime - * @phys_ptr: set to the physical address corresponding to the virtual address - * @attrs: set to the memory transaction attributes to use - * @prot: set to the permissions for the page containing phys_ptr - * @page_size: set to the size of the page containing phys_ptr - * @fsr: set to the DFSR/IFSR value on failure - */ -static bool get_phys_addr(CPUARMState *env, target_ulong address, - int access_type, ARMMMUIdx mmu_idx, - hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot, - target_ulong *page_size, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) { - /* Call ourselves recursively to do the stage 1 and then stage 2 - * translations. - */ - if (arm_feature(env, ARM_FEATURE_EL2)) { - hwaddr ipa; - int s2_prot; - int ret; - - ret = get_phys_addr(env, address, access_type, - mmu_idx + ARMMMUIdx_S1NSE0, &ipa, attrs, - prot, page_size, fsr, fi); - - /* If S1 fails or S2 is disabled, return early. */ - if (ret || regime_translation_disabled(env, ARMMMUIdx_S2NS)) { - *phys_ptr = ipa; - return ret; - } - - /* S1 is done. Now do S2 translation. */ - ret = get_phys_addr_lpae(env, ipa, access_type, ARMMMUIdx_S2NS, - phys_ptr, attrs, &s2_prot, - page_size, fsr, fi); - fi->s2addr = ipa; - /* Combine the S1 and S2 perms. */ - *prot &= s2_prot; - return ret; - } else { - /* - * For non-EL2 CPUs a stage1+stage2 translation is just stage 1. - */ - mmu_idx += ARMMMUIdx_S1NSE0; - } - } - - /* The page table entries may downgrade secure to non-secure, but - * cannot upgrade an non-secure translation regime's attributes - * to secure. - */ - attrs->secure = regime_is_secure(env, mmu_idx); - attrs->user = regime_is_user(env, mmu_idx); - - /* Fast Context Switch Extension. This doesn't exist at all in v8. - * In v7 and earlier it affects all stage 1 translations. - */ - if (address < 0x02000000 && mmu_idx != ARMMMUIdx_S2NS - && !arm_feature(env, ARM_FEATURE_V8)) { - if (regime_el(env, mmu_idx) == 3) { - address += env->cp15.fcseidr_s; - } else { - address += env->cp15.fcseidr_ns; - } - } - - /* pmsav7 has special handling for when MPU is disabled so call it before - * the common MMU/MPU disabled check below. - */ - if (arm_feature(env, ARM_FEATURE_MPU) && - arm_feature(env, ARM_FEATURE_V7)) { - *page_size = TARGET_PAGE_SIZE; - return get_phys_addr_pmsav7(env, address, access_type, mmu_idx, - phys_ptr, prot, fsr); - } - - if (regime_translation_disabled(env, mmu_idx)) { - /* MMU/MPU disabled. */ - *phys_ptr = address; - *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - *page_size = TARGET_PAGE_SIZE; - return 0; - } - - if (arm_feature(env, ARM_FEATURE_MPU)) { - /* Pre-v7 MPU */ - *page_size = TARGET_PAGE_SIZE; - return get_phys_addr_pmsav5(env, address, access_type, mmu_idx, - phys_ptr, prot, fsr); - } - - if (regime_using_lpae_format(env, mmu_idx)) { - return get_phys_addr_lpae(env, address, access_type, mmu_idx, phys_ptr, - attrs, prot, page_size, fsr, fi); - } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) { - return get_phys_addr_v6(env, address, access_type, mmu_idx, phys_ptr, - attrs, prot, page_size, fsr, fi); - } else { - return get_phys_addr_v5(env, address, access_type, mmu_idx, phys_ptr, - prot, page_size, fsr, fi); - } -} - -/* Walk the page table and (if the mapping exists) add the page - * to the TLB. Return false on success, or true on failure. Populate - * fsr with ARM DFSR/IFSR fault register format value on failure. - */ -bool arm_tlb_fill(CPUState *cs, vaddr address, - int access_type, int mmu_idx, uint32_t *fsr, - ARMMMUFaultInfo *fi) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - hwaddr phys_addr; - target_ulong page_size; - int prot; - int ret; - MemTxAttrs attrs = {}; - - ret = get_phys_addr(env, address, access_type, mmu_idx, &phys_addr, - &attrs, &prot, &page_size, fsr, fi); - if (!ret) { - /* Map a single [sub]page. */ - phys_addr &= TARGET_PAGE_MASK; - address &= TARGET_PAGE_MASK; - tlb_set_page_with_attrs(cs, address, phys_addr, attrs, - prot, mmu_idx, page_size); - return 0; - } - - return ret; -} - -hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr, - MemTxAttrs *attrs) -{ - ARMCPU *cpu = ARM_CPU(cs); - CPUARMState *env = &cpu->env; - hwaddr phys_addr; - target_ulong page_size; - int prot; - bool ret; - uint32_t fsr; - ARMMMUFaultInfo fi = {}; - - *attrs = (MemTxAttrs) {}; - - ret = get_phys_addr(env, addr, 0, cpu_mmu_index(env, false), &phys_addr, - attrs, &prot, &page_size, &fsr, &fi); - - if (ret) { - return -1; - } - return phys_addr; -} - -uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - switch (reg) { - case 0: /* APSR */ - return xpsr_read(env) & 0xf8000000; - case 1: /* IAPSR */ - return xpsr_read(env) & 0xf80001ff; - case 2: /* EAPSR */ - return xpsr_read(env) & 0xff00fc00; - case 3: /* xPSR */ - return xpsr_read(env) & 0xff00fdff; - case 5: /* IPSR */ - return xpsr_read(env) & 0x000001ff; - case 6: /* EPSR */ - return xpsr_read(env) & 0x0700fc00; - case 7: /* IEPSR */ - return xpsr_read(env) & 0x0700edff; - case 8: /* MSP */ - return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13]; - case 9: /* PSP */ - return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp; - case 16: /* PRIMASK */ - return (env->daif & PSTATE_I) != 0; - case 17: /* BASEPRI */ - case 18: /* BASEPRI_MAX */ - return env->v7m.basepri; - case 19: /* FAULTMASK */ - return (env->daif & PSTATE_F) != 0; - case 20: /* CONTROL */ - return env->v7m.control; - default: - /* ??? For debugging only. */ - cpu_abort(CPU(cpu), "Unimplemented system register read (%d)\n", reg); - return 0; - } -} - -void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val) -{ - ARMCPU *cpu = arm_env_get_cpu(env); - - switch (reg) { - case 0: /* APSR */ - xpsr_write(env, val, 0xf8000000); - break; - case 1: /* IAPSR */ - xpsr_write(env, val, 0xf8000000); - break; - case 2: /* EAPSR */ - xpsr_write(env, val, 0xfe00fc00); - break; - case 3: /* xPSR */ - xpsr_write(env, val, 0xfe00fc00); - break; - case 5: /* IPSR */ - /* IPSR bits are readonly. */ - break; - case 6: /* EPSR */ - xpsr_write(env, val, 0x0600fc00); - break; - case 7: /* IEPSR */ - xpsr_write(env, val, 0x0600fc00); - break; - case 8: /* MSP */ - if (env->v7m.current_sp) - env->v7m.other_sp = val; - else - env->regs[13] = val; - break; - case 9: /* PSP */ - if (env->v7m.current_sp) - env->regs[13] = val; - else - env->v7m.other_sp = val; - break; - case 16: /* PRIMASK */ - if (val & 1) { - env->daif |= PSTATE_I; - } else { - env->daif &= ~PSTATE_I; - } - break; - case 17: /* BASEPRI */ - env->v7m.basepri = val & 0xff; - break; - case 18: /* BASEPRI_MAX */ - val &= 0xff; - if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0)) - env->v7m.basepri = val; - break; - case 19: /* FAULTMASK */ - if (val & 1) { - env->daif |= PSTATE_F; - } else { - env->daif &= ~PSTATE_F; - } - break; - case 20: /* CONTROL */ - env->v7m.control = val & 3; - switch_v7m_sp(env, (val & 2) != 0); - break; - default: - /* ??? For debugging only. */ - cpu_abort(CPU(cpu), "Unimplemented system register write (%d)\n", reg); - return; - } -} - -#endif - -void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in) -{ - /* Implement DC ZVA, which zeroes a fixed-length block of memory. - * Note that we do not implement the (architecturally mandated) - * alignment fault for attempts to use this on Device memory - * (which matches the usual QEMU behaviour of not implementing either - * alignment faults or any memory attribute handling). - */ - - ARMCPU *cpu = arm_env_get_cpu(env); - uint64_t blocklen = 4 << cpu->dcz_blocksize; - uint64_t vaddr = vaddr_in & ~(blocklen - 1); - -#ifndef CONFIG_USER_ONLY - { - /* Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than - * the block size so we might have to do more than one TLB lookup. - * We know that in fact for any v8 CPU the page size is at least 4K - * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only - * 1K as an artefact of legacy v5 subpage support being present in the - * same QEMU executable. - */ - int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE); - void *hostaddr[maxidx]; - int try, i; - unsigned mmu_idx = cpu_mmu_index(env, false); - TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); - - for (try = 0; try < 2; try++) { - - for (i = 0; i < maxidx; i++) { - hostaddr[i] = tlb_vaddr_to_host(env, - vaddr + TARGET_PAGE_SIZE * i, - 1, mmu_idx); - if (!hostaddr[i]) { - break; - } - } - if (i == maxidx) { - /* If it's all in the TLB it's fair game for just writing to; - * we know we don't need to update dirty status, etc. - */ - for (i = 0; i < maxidx - 1; i++) { - memset(hostaddr[i], 0, TARGET_PAGE_SIZE); - } - memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE)); - return; - } - /* OK, try a store and see if we can populate the tlb. This - * might cause an exception if the memory isn't writable, - * in which case we will longjmp out of here. We must for - * this purpose use the actual register value passed to us - * so that we get the fault address right. - */ - helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETRA()); - /* Now we can populate the other TLB entries, if any */ - for (i = 0; i < maxidx; i++) { - uint64_t va = vaddr + TARGET_PAGE_SIZE * i; - if (va != (vaddr_in & TARGET_PAGE_MASK)) { - helper_ret_stb_mmu(env, va, 0, oi, GETRA()); - } - } - } - - /* Slow path (probably attempt to do this to an I/O device or - * similar, or clearing of a block of code we have translations - * cached for). Just do a series of byte writes as the architecture - * demands. It's not worth trying to use a cpu_physical_memory_map(), - * memset(), unmap() sequence here because: - * + we'd need to account for the blocksize being larger than a page - * + the direct-RAM access case is almost always going to be dealt - * with in the fastpath code above, so there's no speed benefit - * + we would have to deal with the map returning NULL because the - * bounce buffer was in use - */ - for (i = 0; i < blocklen; i++) { - helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETRA()); - } - } -#else - memset(g2h(vaddr), 0, blocklen); -#endif -} - -/* Note that signed overflow is undefined in C. The following routines are - careful to use unsigned types where modulo arithmetic is required. - Failure to do so _will_ break on newer gcc. */ - -/* Signed saturating arithmetic. */ - -/* Perform 16-bit signed saturating addition. */ -static inline uint16_t add16_sat(uint16_t a, uint16_t b) -{ - uint16_t res; - - res = a + b; - if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { - if (a & 0x8000) - res = 0x8000; - else - res = 0x7fff; - } - return res; -} - -/* Perform 8-bit signed saturating addition. */ -static inline uint8_t add8_sat(uint8_t a, uint8_t b) -{ - uint8_t res; - - res = a + b; - if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { - if (a & 0x80) - res = 0x80; - else - res = 0x7f; - } - return res; -} - -/* Perform 16-bit signed saturating subtraction. */ -static inline uint16_t sub16_sat(uint16_t a, uint16_t b) -{ - uint16_t res; - - res = a - b; - if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { - if (a & 0x8000) - res = 0x8000; - else - res = 0x7fff; - } - return res; -} - -/* Perform 8-bit signed saturating subtraction. */ -static inline uint8_t sub8_sat(uint8_t a, uint8_t b) -{ - uint8_t res; - - res = a - b; - if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { - if (a & 0x80) - res = 0x80; - else - res = 0x7f; - } - return res; -} - -#define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); -#define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); -#define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); -#define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); -#define PFX q - -#include "op_addsub.h" - -/* Unsigned saturating arithmetic. */ -static inline uint16_t add16_usat(uint16_t a, uint16_t b) -{ - uint16_t res; - res = a + b; - if (res < a) - res = 0xffff; - return res; -} - -static inline uint16_t sub16_usat(uint16_t a, uint16_t b) -{ - if (a > b) - return a - b; - else - return 0; -} - -static inline uint8_t add8_usat(uint8_t a, uint8_t b) -{ - uint8_t res; - res = a + b; - if (res < a) - res = 0xff; - return res; -} - -static inline uint8_t sub8_usat(uint8_t a, uint8_t b) -{ - if (a > b) - return a - b; - else - return 0; -} - -#define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); -#define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); -#define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); -#define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); -#define PFX uq - -#include "op_addsub.h" - -/* Signed modulo arithmetic. */ -#define SARITH16(a, b, n, op) do { \ - int32_t sum; \ - sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \ - RESULT(sum, n, 16); \ - if (sum >= 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define SARITH8(a, b, n, op) do { \ - int32_t sum; \ - sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \ - RESULT(sum, n, 8); \ - if (sum >= 0) \ - ge |= 1 << n; \ - } while(0) - - -#define ADD16(a, b, n) SARITH16(a, b, n, +) -#define SUB16(a, b, n) SARITH16(a, b, n, -) -#define ADD8(a, b, n) SARITH8(a, b, n, +) -#define SUB8(a, b, n) SARITH8(a, b, n, -) -#define PFX s -#define ARITH_GE - -#include "op_addsub.h" - -/* Unsigned modulo arithmetic. */ -#define ADD16(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ - RESULT(sum, n, 16); \ - if ((sum >> 16) == 1) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define ADD8(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ - RESULT(sum, n, 8); \ - if ((sum >> 8) == 1) \ - ge |= 1 << n; \ - } while(0) - -#define SUB16(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ - RESULT(sum, n, 16); \ - if ((sum >> 16) == 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define SUB8(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ - RESULT(sum, n, 8); \ - if ((sum >> 8) == 0) \ - ge |= 1 << n; \ - } while(0) - -#define PFX u -#define ARITH_GE - -#include "op_addsub.h" - -/* Halved signed arithmetic. */ -#define ADD16(a, b, n) \ - RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) -#define SUB16(a, b, n) \ - RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) -#define ADD8(a, b, n) \ - RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) -#define SUB8(a, b, n) \ - RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) -#define PFX sh - -#include "op_addsub.h" - -/* Halved unsigned arithmetic. */ -#define ADD16(a, b, n) \ - RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) -#define SUB16(a, b, n) \ - RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) -#define ADD8(a, b, n) \ - RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) -#define SUB8(a, b, n) \ - RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) -#define PFX uh - -#include "op_addsub.h" - -static inline uint8_t do_usad(uint8_t a, uint8_t b) -{ - if (a > b) - return a - b; - else - return b - a; -} - -/* Unsigned sum of absolute byte differences. */ -uint32_t HELPER(usad8)(uint32_t a, uint32_t b) -{ - uint32_t sum; - sum = do_usad(a, b); - sum += do_usad(a >> 8, b >> 8); - sum += do_usad(a >> 16, b >>16); - sum += do_usad(a >> 24, b >> 24); - return sum; -} - -/* For ARMv6 SEL instruction. */ -uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b) -{ - uint32_t mask; - - mask = 0; - if (flags & 1) - mask |= 0xff; - if (flags & 2) - mask |= 0xff00; - if (flags & 4) - mask |= 0xff0000; - if (flags & 8) - mask |= 0xff000000; - return (a & mask) | (b & ~mask); -} - -/* VFP support. We follow the convention used for VFP instructions: - Single precision routines have a "s" suffix, double precision a - "d" suffix. */ - -/* Convert host exception flags to vfp form. */ -static inline int vfp_exceptbits_from_host(int host_bits) -{ - int target_bits = 0; - - if (host_bits & float_flag_invalid) - target_bits |= 1; - if (host_bits & float_flag_divbyzero) - target_bits |= 2; - if (host_bits & float_flag_overflow) - target_bits |= 4; - if (host_bits & (float_flag_underflow | float_flag_output_denormal)) - target_bits |= 8; - if (host_bits & float_flag_inexact) - target_bits |= 0x10; - if (host_bits & float_flag_input_denormal) - target_bits |= 0x80; - return target_bits; -} - -uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env) -{ - int i; - uint32_t fpscr; - - fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff) - | (env->vfp.vec_len << 16) - | (env->vfp.vec_stride << 20); - i = get_float_exception_flags(&env->vfp.fp_status); - i |= get_float_exception_flags(&env->vfp.standard_fp_status); - fpscr |= vfp_exceptbits_from_host(i); - return fpscr; -} - -uint32_t vfp_get_fpscr(CPUARMState *env) -{ - return HELPER(vfp_get_fpscr)(env); -} - -/* Convert vfp exception flags to target form. */ -static inline int vfp_exceptbits_to_host(int target_bits) -{ - int host_bits = 0; - - if (target_bits & 1) - host_bits |= float_flag_invalid; - if (target_bits & 2) - host_bits |= float_flag_divbyzero; - if (target_bits & 4) - host_bits |= float_flag_overflow; - if (target_bits & 8) - host_bits |= float_flag_underflow; - if (target_bits & 0x10) - host_bits |= float_flag_inexact; - if (target_bits & 0x80) - host_bits |= float_flag_input_denormal; - return host_bits; -} - -void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) -{ - int i; - uint32_t changed; - - changed = env->vfp.xregs[ARM_VFP_FPSCR]; - env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff); - env->vfp.vec_len = (val >> 16) & 7; - env->vfp.vec_stride = (val >> 20) & 3; - - changed ^= val; - if (changed & (3 << 22)) { - i = (val >> 22) & 3; - switch (i) { - case FPROUNDING_TIEEVEN: - i = float_round_nearest_even; - break; - case FPROUNDING_POSINF: - i = float_round_up; - break; - case FPROUNDING_NEGINF: - i = float_round_down; - break; - case FPROUNDING_ZERO: - i = float_round_to_zero; - break; - } - set_float_rounding_mode(i, &env->vfp.fp_status); - } - if (changed & (1 << 24)) { - set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); - set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status); - } - if (changed & (1 << 25)) - set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status); - - i = vfp_exceptbits_to_host(val); - set_float_exception_flags(i, &env->vfp.fp_status); - set_float_exception_flags(0, &env->vfp.standard_fp_status); -} - -void vfp_set_fpscr(CPUARMState *env, uint32_t val) -{ - HELPER(vfp_set_fpscr)(env, val); -} - -#define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p)) - -#define VFP_BINOP(name) \ -float32 VFP_HELPER(name, s)(float32 a, float32 b, void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - return float32_ ## name(a, b, fpst); \ -} \ -float64 VFP_HELPER(name, d)(float64 a, float64 b, void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - return float64_ ## name(a, b, fpst); \ -} -VFP_BINOP(add) -VFP_BINOP(sub) -VFP_BINOP(mul) -VFP_BINOP(div) -VFP_BINOP(min) -VFP_BINOP(max) -VFP_BINOP(minnum) -VFP_BINOP(maxnum) -#undef VFP_BINOP - -float32 VFP_HELPER(neg, s)(float32 a) -{ - return float32_chs(a); -} - -float64 VFP_HELPER(neg, d)(float64 a) -{ - return float64_chs(a); -} - -float32 VFP_HELPER(abs, s)(float32 a) -{ - return float32_abs(a); -} - -float64 VFP_HELPER(abs, d)(float64 a) -{ - return float64_abs(a); -} - -float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env) -{ - return float32_sqrt(a, &env->vfp.fp_status); -} - -float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env) -{ - return float64_sqrt(a, &env->vfp.fp_status); -} - -/* XXX: check quiet/signaling case */ -#define DO_VFP_cmp(p, type) \ -void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \ -{ \ - uint32_t flags; \ - switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \ - case 0: flags = 0x6; break; \ - case -1: flags = 0x8; break; \ - case 1: flags = 0x2; break; \ - default: case 2: flags = 0x3; break; \ - } \ - env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ - | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ -} \ -void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \ -{ \ - uint32_t flags; \ - switch(type ## _compare(a, b, &env->vfp.fp_status)) { \ - case 0: flags = 0x6; break; \ - case -1: flags = 0x8; break; \ - case 1: flags = 0x2; break; \ - default: case 2: flags = 0x3; break; \ - } \ - env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ - | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ -} -DO_VFP_cmp(s, float32) -DO_VFP_cmp(d, float64) -#undef DO_VFP_cmp - -/* Integer to float and float to integer conversions */ - -#define CONV_ITOF(name, fsz, sign) \ - float##fsz HELPER(name)(uint32_t x, void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - return sign##int32_to_##float##fsz((sign##int32_t)x, fpst); \ -} - -#define CONV_FTOI(name, fsz, sign, round) \ -uint32_t HELPER(name)(float##fsz x, void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - if (float##fsz##_is_any_nan(x)) { \ - float_raise(float_flag_invalid, fpst); \ - return 0; \ - } \ - return float##fsz##_to_##sign##int32##round(x, fpst); \ -} - -#define FLOAT_CONVS(name, p, fsz, sign) \ -CONV_ITOF(vfp_##name##to##p, fsz, sign) \ -CONV_FTOI(vfp_to##name##p, fsz, sign, ) \ -CONV_FTOI(vfp_to##name##z##p, fsz, sign, _round_to_zero) - -FLOAT_CONVS(si, s, 32, ) -FLOAT_CONVS(si, d, 64, ) -FLOAT_CONVS(ui, s, 32, u) -FLOAT_CONVS(ui, d, 64, u) - -#undef CONV_ITOF -#undef CONV_FTOI -#undef FLOAT_CONVS - -/* floating point conversion */ -float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env) -{ - float64 r = float32_to_float64(x, &env->vfp.fp_status); - /* ARM requires that S<->D conversion of any kind of NaN generates - * a quiet NaN by forcing the most significant frac bit to 1. - */ - return float64_maybe_silence_nan(r); -} - -float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env) -{ - float32 r = float64_to_float32(x, &env->vfp.fp_status); - /* ARM requires that S<->D conversion of any kind of NaN generates - * a quiet NaN by forcing the most significant frac bit to 1. - */ - return float32_maybe_silence_nan(r); -} - -/* VFP3 fixed point conversion. */ -#define VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \ -float##fsz HELPER(vfp_##name##to##p)(uint##isz##_t x, uint32_t shift, \ - void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - float##fsz tmp; \ - tmp = itype##_to_##float##fsz(x, fpst); \ - return float##fsz##_scalbn(tmp, -(int)shift, fpst); \ -} - -/* Notice that we want only input-denormal exception flags from the - * scalbn operation: the other possible flags (overflow+inexact if - * we overflow to infinity, output-denormal) aren't correct for the - * complete scale-and-convert operation. - */ -#define VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, round) \ -uint##isz##_t HELPER(vfp_to##name##p##round)(float##fsz x, \ - uint32_t shift, \ - void *fpstp) \ -{ \ - float_status *fpst = fpstp; \ - int old_exc_flags = get_float_exception_flags(fpst); \ - float##fsz tmp; \ - if (float##fsz##_is_any_nan(x)) { \ - float_raise(float_flag_invalid, fpst); \ - return 0; \ - } \ - tmp = float##fsz##_scalbn(x, shift, fpst); \ - old_exc_flags |= get_float_exception_flags(fpst) \ - & float_flag_input_denormal; \ - set_float_exception_flags(old_exc_flags, fpst); \ - return float##fsz##_to_##itype##round(tmp, fpst); \ -} - -#define VFP_CONV_FIX(name, p, fsz, isz, itype) \ -VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \ -VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, _round_to_zero) \ -VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, ) - -#define VFP_CONV_FIX_A64(name, p, fsz, isz, itype) \ -VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \ -VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, ) - -VFP_CONV_FIX(sh, d, 64, 64, int16) -VFP_CONV_FIX(sl, d, 64, 64, int32) -VFP_CONV_FIX_A64(sq, d, 64, 64, int64) -VFP_CONV_FIX(uh, d, 64, 64, uint16) -VFP_CONV_FIX(ul, d, 64, 64, uint32) -VFP_CONV_FIX_A64(uq, d, 64, 64, uint64) -VFP_CONV_FIX(sh, s, 32, 32, int16) -VFP_CONV_FIX(sl, s, 32, 32, int32) -VFP_CONV_FIX_A64(sq, s, 32, 64, int64) -VFP_CONV_FIX(uh, s, 32, 32, uint16) -VFP_CONV_FIX(ul, s, 32, 32, uint32) -VFP_CONV_FIX_A64(uq, s, 32, 64, uint64) -#undef VFP_CONV_FIX -#undef VFP_CONV_FIX_FLOAT -#undef VFP_CONV_FLOAT_FIX_ROUND - -/* Set the current fp rounding mode and return the old one. - * The argument is a softfloat float_round_ value. - */ -uint32_t HELPER(set_rmode)(uint32_t rmode, CPUARMState *env) -{ - float_status *fp_status = &env->vfp.fp_status; - - uint32_t prev_rmode = get_float_rounding_mode(fp_status); - set_float_rounding_mode(rmode, fp_status); - - return prev_rmode; -} - -/* Set the current fp rounding mode in the standard fp status and return - * the old one. This is for NEON instructions that need to change the - * rounding mode but wish to use the standard FPSCR values for everything - * else. Always set the rounding mode back to the correct value after - * modifying it. - * The argument is a softfloat float_round_ value. - */ -uint32_t HELPER(set_neon_rmode)(uint32_t rmode, CPUARMState *env) -{ - float_status *fp_status = &env->vfp.standard_fp_status; - - uint32_t prev_rmode = get_float_rounding_mode(fp_status); - set_float_rounding_mode(rmode, fp_status); - - return prev_rmode; -} - -/* Half precision conversions. */ -static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s) -{ - int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; - float32 r = float16_to_float32(make_float16(a), ieee, s); - if (ieee) { - return float32_maybe_silence_nan(r); - } - return r; -} - -static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s) -{ - int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; - float16 r = float32_to_float16(a, ieee, s); - if (ieee) { - r = float16_maybe_silence_nan(r); - } - return float16_val(r); -} - -float32 HELPER(neon_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env) -{ - return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status); -} - -uint32_t HELPER(neon_fcvt_f32_to_f16)(float32 a, CPUARMState *env) -{ - return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status); -} - -float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env) -{ - return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status); -} - -uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUARMState *env) -{ - return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status); -} - -float64 HELPER(vfp_fcvt_f16_to_f64)(uint32_t a, CPUARMState *env) -{ - int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; - float64 r = float16_to_float64(make_float16(a), ieee, &env->vfp.fp_status); - if (ieee) { - return float64_maybe_silence_nan(r); - } - return r; -} - -uint32_t HELPER(vfp_fcvt_f64_to_f16)(float64 a, CPUARMState *env) -{ - int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; - float16 r = float64_to_float16(a, ieee, &env->vfp.fp_status); - if (ieee) { - r = float16_maybe_silence_nan(r); - } - return float16_val(r); -} - -#define float32_two make_float32(0x40000000) -#define float32_three make_float32(0x40400000) -#define float32_one_point_five make_float32(0x3fc00000) - -float32 HELPER(recps_f32)(float32 a, float32 b, CPUARMState *env) -{ - float_status *s = &env->vfp.standard_fp_status; - if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || - (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { - if (!(float32_is_zero(a) || float32_is_zero(b))) { - float_raise(float_flag_input_denormal, s); - } - return float32_two; - } - return float32_sub(float32_two, float32_mul(a, b, s), s); -} - -float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUARMState *env) -{ - float_status *s = &env->vfp.standard_fp_status; - float32 product; - if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || - (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { - if (!(float32_is_zero(a) || float32_is_zero(b))) { - float_raise(float_flag_input_denormal, s); - } - return float32_one_point_five; - } - product = float32_mul(a, b, s); - return float32_div(float32_sub(float32_three, product, s), float32_two, s); -} - -/* NEON helpers. */ - -/* Constants 256 and 512 are used in some helpers; we avoid relying on - * int->float conversions at run-time. */ -#define float64_256 make_float64(0x4070000000000000LL) -#define float64_512 make_float64(0x4080000000000000LL) -#define float32_maxnorm make_float32(0x7f7fffff) -#define float64_maxnorm make_float64(0x7fefffffffffffffLL) - -/* Reciprocal functions - * - * The algorithm that must be used to calculate the estimate - * is specified by the ARM ARM, see FPRecipEstimate() - */ - -static float64 recip_estimate(float64 a, float_status *real_fp_status) -{ - /* These calculations mustn't set any fp exception flags, - * so we use a local copy of the fp_status. - */ - float_status dummy_status = *real_fp_status; - float_status *s = &dummy_status; - /* q = (int)(a * 512.0) */ - float64 q = float64_mul(float64_512, a, s); - int64_t q_int = float64_to_int64_round_to_zero(q, s); - - /* r = 1.0 / (((double)q + 0.5) / 512.0) */ - q = int64_to_float64(q_int, s); - q = float64_add(q, float64_half, s); - q = float64_div(q, float64_512, s); - q = float64_div(float64_one, q, s); - - /* s = (int)(256.0 * r + 0.5) */ - q = float64_mul(q, float64_256, s); - q = float64_add(q, float64_half, s); - q_int = float64_to_int64_round_to_zero(q, s); - - /* return (double)s / 256.0 */ - return float64_div(int64_to_float64(q_int, s), float64_256, s); -} - -/* Common wrapper to call recip_estimate */ -static float64 call_recip_estimate(float64 num, int off, float_status *fpst) -{ - uint64_t val64 = float64_val(num); - uint64_t frac = extract64(val64, 0, 52); - int64_t exp = extract64(val64, 52, 11); - uint64_t sbit; - float64 scaled, estimate; - - /* Generate the scaled number for the estimate function */ - if (exp == 0) { - if (extract64(frac, 51, 1) == 0) { - exp = -1; - frac = extract64(frac, 0, 50) << 2; - } else { - frac = extract64(frac, 0, 51) << 1; - } - } - - /* scaled = '0' : '01111111110' : fraction<51:44> : Zeros(44); */ - scaled = make_float64((0x3feULL << 52) - | extract64(frac, 44, 8) << 44); - - estimate = recip_estimate(scaled, fpst); - - /* Build new result */ - val64 = float64_val(estimate); - sbit = 0x8000000000000000ULL & val64; - exp = off - exp; - frac = extract64(val64, 0, 52); - - if (exp == 0) { - frac = 1ULL << 51 | extract64(frac, 1, 51); - } else if (exp == -1) { - frac = 1ULL << 50 | extract64(frac, 2, 50); - exp = 0; - } - - return make_float64(sbit | (exp << 52) | frac); -} - -static bool round_to_inf(float_status *fpst, bool sign_bit) -{ - switch (fpst->float_rounding_mode) { - case float_round_nearest_even: /* Round to Nearest */ - return true; - case float_round_up: /* Round to +Inf */ - return !sign_bit; - case float_round_down: /* Round to -Inf */ - return sign_bit; - case float_round_to_zero: /* Round to Zero */ - return false; - } - - g_assert_not_reached(); -} - -float32 HELPER(recpe_f32)(float32 input, void *fpstp) -{ - float_status *fpst = fpstp; - float32 f32 = float32_squash_input_denormal(input, fpst); - uint32_t f32_val = float32_val(f32); - uint32_t f32_sbit = 0x80000000ULL & f32_val; - int32_t f32_exp = extract32(f32_val, 23, 8); - uint32_t f32_frac = extract32(f32_val, 0, 23); - float64 f64, r64; - uint64_t r64_val; - int64_t r64_exp; - uint64_t r64_frac; - - if (float32_is_any_nan(f32)) { - float32 nan = f32; - if (float32_is_signaling_nan(f32)) { - float_raise(float_flag_invalid, fpst); - nan = float32_maybe_silence_nan(f32); - } - if (fpst->default_nan_mode) { - nan = float32_default_nan; - } - return nan; - } else if (float32_is_infinity(f32)) { - return float32_set_sign(float32_zero, float32_is_neg(f32)); - } else if (float32_is_zero(f32)) { - float_raise(float_flag_divbyzero, fpst); - return float32_set_sign(float32_infinity, float32_is_neg(f32)); - } else if ((f32_val & ~(1ULL << 31)) < (1ULL << 21)) { - /* Abs(value) < 2.0^-128 */ - float_raise(float_flag_overflow | float_flag_inexact, fpst); - if (round_to_inf(fpst, f32_sbit)) { - return float32_set_sign(float32_infinity, float32_is_neg(f32)); - } else { - return float32_set_sign(float32_maxnorm, float32_is_neg(f32)); - } - } else if (f32_exp >= 253 && fpst->flush_to_zero) { - float_raise(float_flag_underflow, fpst); - return float32_set_sign(float32_zero, float32_is_neg(f32)); - } - - - f64 = make_float64(((int64_t)(f32_exp) << 52) | (int64_t)(f32_frac) << 29); - r64 = call_recip_estimate(f64, 253, fpst); - r64_val = float64_val(r64); - r64_exp = extract64(r64_val, 52, 11); - r64_frac = extract64(r64_val, 0, 52); - - /* result = sign : result_exp<7:0> : fraction<51:29>; */ - return make_float32(f32_sbit | - (r64_exp & 0xff) << 23 | - extract64(r64_frac, 29, 24)); -} - -float64 HELPER(recpe_f64)(float64 input, void *fpstp) -{ - float_status *fpst = fpstp; - float64 f64 = float64_squash_input_denormal(input, fpst); - uint64_t f64_val = float64_val(f64); - uint64_t f64_sbit = 0x8000000000000000ULL & f64_val; - int64_t f64_exp = extract64(f64_val, 52, 11); - float64 r64; - uint64_t r64_val; - int64_t r64_exp; - uint64_t r64_frac; - - /* Deal with any special cases */ - if (float64_is_any_nan(f64)) { - float64 nan = f64; - if (float64_is_signaling_nan(f64)) { - float_raise(float_flag_invalid, fpst); - nan = float64_maybe_silence_nan(f64); - } - if (fpst->default_nan_mode) { - nan = float64_default_nan; - } - return nan; - } else if (float64_is_infinity(f64)) { - return float64_set_sign(float64_zero, float64_is_neg(f64)); - } else if (float64_is_zero(f64)) { - float_raise(float_flag_divbyzero, fpst); - return float64_set_sign(float64_infinity, float64_is_neg(f64)); - } else if ((f64_val & ~(1ULL << 63)) < (1ULL << 50)) { - /* Abs(value) < 2.0^-1024 */ - float_raise(float_flag_overflow | float_flag_inexact, fpst); - if (round_to_inf(fpst, f64_sbit)) { - return float64_set_sign(float64_infinity, float64_is_neg(f64)); - } else { - return float64_set_sign(float64_maxnorm, float64_is_neg(f64)); - } - } else if (f64_exp >= 2045 && fpst->flush_to_zero) { - float_raise(float_flag_underflow, fpst); - return float64_set_sign(float64_zero, float64_is_neg(f64)); - } - - r64 = call_recip_estimate(f64, 2045, fpst); - r64_val = float64_val(r64); - r64_exp = extract64(r64_val, 52, 11); - r64_frac = extract64(r64_val, 0, 52); - - /* result = sign : result_exp<10:0> : fraction<51:0> */ - return make_float64(f64_sbit | - ((r64_exp & 0x7ff) << 52) | - r64_frac); -} - -/* The algorithm that must be used to calculate the estimate - * is specified by the ARM ARM. - */ -static float64 recip_sqrt_estimate(float64 a, float_status *real_fp_status) -{ - /* These calculations mustn't set any fp exception flags, - * so we use a local copy of the fp_status. - */ - float_status dummy_status = *real_fp_status; - float_status *s = &dummy_status; - float64 q; - int64_t q_int; - - if (float64_lt(a, float64_half, s)) { - /* range 0.25 <= a < 0.5 */ - - /* a in units of 1/512 rounded down */ - /* q0 = (int)(a * 512.0); */ - q = float64_mul(float64_512, a, s); - q_int = float64_to_int64_round_to_zero(q, s); - - /* reciprocal root r */ - /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */ - q = int64_to_float64(q_int, s); - q = float64_add(q, float64_half, s); - q = float64_div(q, float64_512, s); - q = float64_sqrt(q, s); - q = float64_div(float64_one, q, s); - } else { - /* range 0.5 <= a < 1.0 */ - - /* a in units of 1/256 rounded down */ - /* q1 = (int)(a * 256.0); */ - q = float64_mul(float64_256, a, s); - int64_t q_int = float64_to_int64_round_to_zero(q, s); - - /* reciprocal root r */ - /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */ - q = int64_to_float64(q_int, s); - q = float64_add(q, float64_half, s); - q = float64_div(q, float64_256, s); - q = float64_sqrt(q, s); - q = float64_div(float64_one, q, s); - } - /* r in units of 1/256 rounded to nearest */ - /* s = (int)(256.0 * r + 0.5); */ - - q = float64_mul(q, float64_256,s ); - q = float64_add(q, float64_half, s); - q_int = float64_to_int64_round_to_zero(q, s); - - /* return (double)s / 256.0;*/ - return float64_div(int64_to_float64(q_int, s), float64_256, s); -} - -float32 HELPER(rsqrte_f32)(float32 input, void *fpstp) -{ - float_status *s = fpstp; - float32 f32 = float32_squash_input_denormal(input, s); - uint32_t val = float32_val(f32); - uint32_t f32_sbit = 0x80000000 & val; - int32_t f32_exp = extract32(val, 23, 8); - uint32_t f32_frac = extract32(val, 0, 23); - uint64_t f64_frac; - uint64_t val64; - int result_exp; - float64 f64; - - if (float32_is_any_nan(f32)) { - float32 nan = f32; - if (float32_is_signaling_nan(f32)) { - float_raise(float_flag_invalid, s); - nan = float32_maybe_silence_nan(f32); - } - if (s->default_nan_mode) { - nan = float32_default_nan; - } - return nan; - } else if (float32_is_zero(f32)) { - float_raise(float_flag_divbyzero, s); - return float32_set_sign(float32_infinity, float32_is_neg(f32)); - } else if (float32_is_neg(f32)) { - float_raise(float_flag_invalid, s); - return float32_default_nan; - } else if (float32_is_infinity(f32)) { - return float32_zero; - } - - /* Scale and normalize to a double-precision value between 0.25 and 1.0, - * preserving the parity of the exponent. */ - - f64_frac = ((uint64_t) f32_frac) << 29; - if (f32_exp == 0) { - while (extract64(f64_frac, 51, 1) == 0) { - f64_frac = f64_frac << 1; - f32_exp = f32_exp-1; - } - f64_frac = extract64(f64_frac, 0, 51) << 1; - } - - if (extract64(f32_exp, 0, 1) == 0) { - f64 = make_float64(((uint64_t) f32_sbit) << 32 - | (0x3feULL << 52) - | f64_frac); - } else { - f64 = make_float64(((uint64_t) f32_sbit) << 32 - | (0x3fdULL << 52) - | f64_frac); - } - - result_exp = (380 - f32_exp) / 2; - - f64 = recip_sqrt_estimate(f64, s); - - val64 = float64_val(f64); - - val = ((result_exp & 0xff) << 23) - | ((val64 >> 29) & 0x7fffff); - return make_float32(val); -} - -float64 HELPER(rsqrte_f64)(float64 input, void *fpstp) -{ - float_status *s = fpstp; - float64 f64 = float64_squash_input_denormal(input, s); - uint64_t val = float64_val(f64); - uint64_t f64_sbit = 0x8000000000000000ULL & val; - int64_t f64_exp = extract64(val, 52, 11); - uint64_t f64_frac = extract64(val, 0, 52); - int64_t result_exp; - uint64_t result_frac; - - if (float64_is_any_nan(f64)) { - float64 nan = f64; - if (float64_is_signaling_nan(f64)) { - float_raise(float_flag_invalid, s); - nan = float64_maybe_silence_nan(f64); - } - if (s->default_nan_mode) { - nan = float64_default_nan; - } - return nan; - } else if (float64_is_zero(f64)) { - float_raise(float_flag_divbyzero, s); - return float64_set_sign(float64_infinity, float64_is_neg(f64)); - } else if (float64_is_neg(f64)) { - float_raise(float_flag_invalid, s); - return float64_default_nan; - } else if (float64_is_infinity(f64)) { - return float64_zero; - } - - /* Scale and normalize to a double-precision value between 0.25 and 1.0, - * preserving the parity of the exponent. */ - - if (f64_exp == 0) { - while (extract64(f64_frac, 51, 1) == 0) { - f64_frac = f64_frac << 1; - f64_exp = f64_exp - 1; - } - f64_frac = extract64(f64_frac, 0, 51) << 1; - } - - if (extract64(f64_exp, 0, 1) == 0) { - f64 = make_float64(f64_sbit - | (0x3feULL << 52) - | f64_frac); - } else { - f64 = make_float64(f64_sbit - | (0x3fdULL << 52) - | f64_frac); - } - - result_exp = (3068 - f64_exp) / 2; - - f64 = recip_sqrt_estimate(f64, s); - - result_frac = extract64(float64_val(f64), 0, 52); - - return make_float64(f64_sbit | - ((result_exp & 0x7ff) << 52) | - result_frac); -} - -uint32_t HELPER(recpe_u32)(uint32_t a, void *fpstp) -{ - float_status *s = fpstp; - float64 f64; - - if ((a & 0x80000000) == 0) { - return 0xffffffff; - } - - f64 = make_float64((0x3feULL << 52) - | ((int64_t)(a & 0x7fffffff) << 21)); - - f64 = recip_estimate(f64, s); - - return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); -} - -uint32_t HELPER(rsqrte_u32)(uint32_t a, void *fpstp) -{ - float_status *fpst = fpstp; - float64 f64; - - if ((a & 0xc0000000) == 0) { - return 0xffffffff; - } - - if (a & 0x80000000) { - f64 = make_float64((0x3feULL << 52) - | ((uint64_t)(a & 0x7fffffff) << 21)); - } else { /* bits 31-30 == '01' */ - f64 = make_float64((0x3fdULL << 52) - | ((uint64_t)(a & 0x3fffffff) << 22)); - } - - f64 = recip_sqrt_estimate(f64, fpst); - - return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff); -} - -/* VFPv4 fused multiply-accumulate */ -float32 VFP_HELPER(muladd, s)(float32 a, float32 b, float32 c, void *fpstp) -{ - float_status *fpst = fpstp; - return float32_muladd(a, b, c, 0, fpst); -} - -float64 VFP_HELPER(muladd, d)(float64 a, float64 b, float64 c, void *fpstp) -{ - float_status *fpst = fpstp; - return float64_muladd(a, b, c, 0, fpst); -} - -/* ARMv8 round to integral */ -float32 HELPER(rints_exact)(float32 x, void *fp_status) -{ - return float32_round_to_int(x, fp_status); -} - -float64 HELPER(rintd_exact)(float64 x, void *fp_status) -{ - return float64_round_to_int(x, fp_status); -} - -float32 HELPER(rints)(float32 x, void *fp_status) -{ - int old_flags = get_float_exception_flags(fp_status), new_flags; - float32 ret; - - ret = float32_round_to_int(x, fp_status); - - /* Suppress any inexact exceptions the conversion produced */ - if (!(old_flags & float_flag_inexact)) { - new_flags = get_float_exception_flags(fp_status); - set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status); - } - - return ret; -} - -float64 HELPER(rintd)(float64 x, void *fp_status) -{ - int old_flags = get_float_exception_flags(fp_status), new_flags; - float64 ret; - - ret = float64_round_to_int(x, fp_status); - - new_flags = get_float_exception_flags(fp_status); - - /* Suppress any inexact exceptions the conversion produced */ - if (!(old_flags & float_flag_inexact)) { - new_flags = get_float_exception_flags(fp_status); - set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status); - } - - return ret; -} - -/* Convert ARM rounding mode to softfloat */ -int arm_rmode_to_sf(int rmode) -{ - switch (rmode) { - case FPROUNDING_TIEAWAY: - rmode = float_round_ties_away; - break; - case FPROUNDING_ODD: - /* FIXME: add support for TIEAWAY and ODD */ - qemu_log_mask(LOG_UNIMP, "arm: unimplemented rounding mode: %d\n", - rmode); - case FPROUNDING_TIEEVEN: - default: - rmode = float_round_nearest_even; - break; - case FPROUNDING_POSINF: - rmode = float_round_up; - break; - case FPROUNDING_NEGINF: - rmode = float_round_down; - break; - case FPROUNDING_ZERO: - rmode = float_round_to_zero; - break; - } - return rmode; -} - -/* CRC helpers. - * The upper bytes of val (above the number specified by 'bytes') must have - * been zeroed out by the caller. - */ -uint32_t HELPER(crc32)(uint32_t acc, uint32_t val, uint32_t bytes) -{ - uint8_t buf[4]; - - stl_le_p(buf, val); - - /* zlib crc32 converts the accumulator and output to one's complement. */ - return crc32(acc ^ 0xffffffff, buf, bytes) ^ 0xffffffff; -} - -uint32_t HELPER(crc32c)(uint32_t acc, uint32_t val, uint32_t bytes) -{ - uint8_t buf[4]; - - stl_le_p(buf, val); - - /* Linux crc32c converts the output to one's complement. */ - return crc32c(acc, buf, bytes) ^ 0xffffffff; -} |