diff options
author | 2017-04-25 03:31:15 -0700 | |
---|---|---|
committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/target-m68k | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/target-m68k')
-rw-r--r-- | qemu/target-m68k/Makefile.objs | 3 | ||||
-rw-r--r-- | qemu/target-m68k/cpu-qom.h | 84 | ||||
-rw-r--r-- | qemu/target-m68k/cpu.c | 265 | ||||
-rw-r--r-- | qemu/target-m68k/cpu.h | 244 | ||||
-rw-r--r-- | qemu/target-m68k/gdbstub.c | 75 | ||||
-rw-r--r-- | qemu/target-m68k/helper.c | 887 | ||||
-rw-r--r-- | qemu/target-m68k/helper.h | 50 | ||||
-rw-r--r-- | qemu/target-m68k/m68k-semi.c | 461 | ||||
-rw-r--r-- | qemu/target-m68k/op_helper.c | 233 | ||||
-rw-r--r-- | qemu/target-m68k/qregs.def | 11 | ||||
-rw-r--r-- | qemu/target-m68k/translate.c | 3101 |
11 files changed, 0 insertions, 5414 deletions
diff --git a/qemu/target-m68k/Makefile.objs b/qemu/target-m68k/Makefile.objs deleted file mode 100644 index 02cf616a7..000000000 --- a/qemu/target-m68k/Makefile.objs +++ /dev/null @@ -1,3 +0,0 @@ -obj-y += m68k-semi.o -obj-y += translate.o op_helper.o helper.o cpu.o -obj-y += gdbstub.o diff --git a/qemu/target-m68k/cpu-qom.h b/qemu/target-m68k/cpu-qom.h deleted file mode 100644 index c28e55d6b..000000000 --- a/qemu/target-m68k/cpu-qom.h +++ /dev/null @@ -1,84 +0,0 @@ -/* - * QEMU Motorola 68k CPU - * - * Copyright (c) 2012 SUSE LINUX Products GmbH - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see - * <http://www.gnu.org/licenses/lgpl-2.1.html> - */ -#ifndef QEMU_M68K_CPU_QOM_H -#define QEMU_M68K_CPU_QOM_H - -#include "qom/cpu.h" - -#define TYPE_M68K_CPU "m68k-cpu" - -#define M68K_CPU_CLASS(klass) \ - OBJECT_CLASS_CHECK(M68kCPUClass, (klass), TYPE_M68K_CPU) -#define M68K_CPU(obj) \ - OBJECT_CHECK(M68kCPU, (obj), TYPE_M68K_CPU) -#define M68K_CPU_GET_CLASS(obj) \ - OBJECT_GET_CLASS(M68kCPUClass, (obj), TYPE_M68K_CPU) - -/** - * M68kCPUClass: - * @parent_realize: The parent class' realize handler. - * @parent_reset: The parent class' reset handler. - * - * A Motorola 68k CPU model. - */ -typedef struct M68kCPUClass { - /*< private >*/ - CPUClass parent_class; - /*< public >*/ - - DeviceRealize parent_realize; - void (*parent_reset)(CPUState *cpu); -} M68kCPUClass; - -/** - * M68kCPU: - * @env: #CPUM68KState - * - * A Motorola 68k CPU. - */ -typedef struct M68kCPU { - /*< private >*/ - CPUState parent_obj; - /*< public >*/ - - CPUM68KState env; -} M68kCPU; - -static inline M68kCPU *m68k_env_get_cpu(CPUM68KState *env) -{ - return container_of(env, M68kCPU, env); -} - -#define ENV_GET_CPU(e) CPU(m68k_env_get_cpu(e)) - -#define ENV_OFFSET offsetof(M68kCPU, env) - -void m68k_cpu_do_interrupt(CPUState *cpu); -bool m68k_cpu_exec_interrupt(CPUState *cpu, int int_req); -void m68k_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, - int flags); -hwaddr m68k_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); -int m68k_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); -int m68k_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); - -void m68k_cpu_exec_enter(CPUState *cs); -void m68k_cpu_exec_exit(CPUState *cs); - -#endif diff --git a/qemu/target-m68k/cpu.c b/qemu/target-m68k/cpu.c deleted file mode 100644 index 0b5f9a581..000000000 --- a/qemu/target-m68k/cpu.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * QEMU Motorola 68k CPU - * - * Copyright (c) 2012 SUSE LINUX Products GmbH - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see - * <http://www.gnu.org/licenses/lgpl-2.1.html> - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "cpu.h" -#include "qemu-common.h" -#include "migration/vmstate.h" - - -static void m68k_cpu_set_pc(CPUState *cs, vaddr value) -{ - M68kCPU *cpu = M68K_CPU(cs); - - cpu->env.pc = value; -} - -static bool m68k_cpu_has_work(CPUState *cs) -{ - return cs->interrupt_request & CPU_INTERRUPT_HARD; -} - -static void m68k_set_feature(CPUM68KState *env, int feature) -{ - env->features |= (1u << feature); -} - -/* CPUClass::reset() */ -static void m68k_cpu_reset(CPUState *s) -{ - M68kCPU *cpu = M68K_CPU(s); - M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu); - CPUM68KState *env = &cpu->env; - - mcc->parent_reset(s); - - memset(env, 0, offsetof(CPUM68KState, features)); -#if !defined(CONFIG_USER_ONLY) - env->sr = 0x2700; -#endif - m68k_switch_sp(env); - /* ??? FP regs should be initialized to NaN. */ - env->cc_op = CC_OP_FLAGS; - /* TODO: We should set PC from the interrupt vector. */ - env->pc = 0; - tlb_flush(s, 1); -} - -static void m68k_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) -{ - info->print_insn = print_insn_m68k; -} - -/* CPU models */ - -static ObjectClass *m68k_cpu_class_by_name(const char *cpu_model) -{ - ObjectClass *oc; - char *typename; - - if (cpu_model == NULL) { - return NULL; - } - - typename = g_strdup_printf("%s-" TYPE_M68K_CPU, cpu_model); - oc = object_class_by_name(typename); - g_free(typename); - if (oc != NULL && (object_class_dynamic_cast(oc, TYPE_M68K_CPU) == NULL || - object_class_is_abstract(oc))) { - return NULL; - } - return oc; -} - -static void m5206_cpu_initfn(Object *obj) -{ - M68kCPU *cpu = M68K_CPU(obj); - CPUM68KState *env = &cpu->env; - - m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); -} - -static void m5208_cpu_initfn(Object *obj) -{ - M68kCPU *cpu = M68K_CPU(obj); - CPUM68KState *env = &cpu->env; - - m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); - m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); - m68k_set_feature(env, M68K_FEATURE_BRAL); - m68k_set_feature(env, M68K_FEATURE_CF_EMAC); - m68k_set_feature(env, M68K_FEATURE_USP); -} - -static void cfv4e_cpu_initfn(Object *obj) -{ - M68kCPU *cpu = M68K_CPU(obj); - CPUM68KState *env = &cpu->env; - - m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); - m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); - m68k_set_feature(env, M68K_FEATURE_BRAL); - m68k_set_feature(env, M68K_FEATURE_CF_FPU); - m68k_set_feature(env, M68K_FEATURE_CF_EMAC); - m68k_set_feature(env, M68K_FEATURE_USP); -} - -static void any_cpu_initfn(Object *obj) -{ - M68kCPU *cpu = M68K_CPU(obj); - CPUM68KState *env = &cpu->env; - - m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); - m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); - m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); - m68k_set_feature(env, M68K_FEATURE_BRAL); - m68k_set_feature(env, M68K_FEATURE_CF_FPU); - /* MAC and EMAC are mututally exclusive, so pick EMAC. - It's mostly backwards compatible. */ - m68k_set_feature(env, M68K_FEATURE_CF_EMAC); - m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); - m68k_set_feature(env, M68K_FEATURE_USP); - m68k_set_feature(env, M68K_FEATURE_EXT_FULL); - m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); -} - -typedef struct M68kCPUInfo { - const char *name; - void (*instance_init)(Object *obj); -} M68kCPUInfo; - -static const M68kCPUInfo m68k_cpus[] = { - { .name = "m5206", .instance_init = m5206_cpu_initfn }, - { .name = "m5208", .instance_init = m5208_cpu_initfn }, - { .name = "cfv4e", .instance_init = cfv4e_cpu_initfn }, - { .name = "any", .instance_init = any_cpu_initfn }, -}; - -static void m68k_cpu_realizefn(DeviceState *dev, Error **errp) -{ - CPUState *cs = CPU(dev); - M68kCPU *cpu = M68K_CPU(dev); - M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev); - - m68k_cpu_init_gdb(cpu); - - cpu_reset(cs); - qemu_init_vcpu(cs); - - mcc->parent_realize(dev, errp); -} - -static void m68k_cpu_initfn(Object *obj) -{ - CPUState *cs = CPU(obj); - M68kCPU *cpu = M68K_CPU(obj); - CPUM68KState *env = &cpu->env; - static bool inited; - - cs->env_ptr = env; - cpu_exec_init(cs, &error_abort); - - if (tcg_enabled() && !inited) { - inited = true; - m68k_tcg_init(); - } -} - -static const VMStateDescription vmstate_m68k_cpu = { - .name = "cpu", - .unmigratable = 1, -}; - -static void m68k_cpu_class_init(ObjectClass *c, void *data) -{ - M68kCPUClass *mcc = M68K_CPU_CLASS(c); - CPUClass *cc = CPU_CLASS(c); - DeviceClass *dc = DEVICE_CLASS(c); - - mcc->parent_realize = dc->realize; - dc->realize = m68k_cpu_realizefn; - - mcc->parent_reset = cc->reset; - cc->reset = m68k_cpu_reset; - - cc->class_by_name = m68k_cpu_class_by_name; - cc->has_work = m68k_cpu_has_work; - cc->do_interrupt = m68k_cpu_do_interrupt; - cc->cpu_exec_interrupt = m68k_cpu_exec_interrupt; - cc->dump_state = m68k_cpu_dump_state; - cc->set_pc = m68k_cpu_set_pc; - cc->gdb_read_register = m68k_cpu_gdb_read_register; - cc->gdb_write_register = m68k_cpu_gdb_write_register; -#ifdef CONFIG_USER_ONLY - cc->handle_mmu_fault = m68k_cpu_handle_mmu_fault; -#else - cc->get_phys_page_debug = m68k_cpu_get_phys_page_debug; -#endif - cc->cpu_exec_enter = m68k_cpu_exec_enter; - cc->cpu_exec_exit = m68k_cpu_exec_exit; - cc->disas_set_info = m68k_cpu_disas_set_info; - - cc->gdb_num_core_regs = 18; - cc->gdb_core_xml_file = "cf-core.xml"; - - dc->vmsd = &vmstate_m68k_cpu; - - /* - * Reason: m68k_cpu_initfn() calls cpu_exec_init(), which saves - * the object in cpus -> dangling pointer after final - * object_unref(). - */ - dc->cannot_destroy_with_object_finalize_yet = true; -} - -static void register_cpu_type(const M68kCPUInfo *info) -{ - TypeInfo type_info = { - .parent = TYPE_M68K_CPU, - .instance_init = info->instance_init, - }; - - type_info.name = g_strdup_printf("%s-" TYPE_M68K_CPU, info->name); - type_register(&type_info); - g_free((void *)type_info.name); -} - -static const TypeInfo m68k_cpu_type_info = { - .name = TYPE_M68K_CPU, - .parent = TYPE_CPU, - .instance_size = sizeof(M68kCPU), - .instance_init = m68k_cpu_initfn, - .abstract = true, - .class_size = sizeof(M68kCPUClass), - .class_init = m68k_cpu_class_init, -}; - -static void m68k_cpu_register_types(void) -{ - int i; - - type_register_static(&m68k_cpu_type_info); - for (i = 0; i < ARRAY_SIZE(m68k_cpus); i++) { - register_cpu_type(&m68k_cpus[i]); - } -} - -type_init(m68k_cpu_register_types) diff --git a/qemu/target-m68k/cpu.h b/qemu/target-m68k/cpu.h deleted file mode 100644 index 48b4c872f..000000000 --- a/qemu/target-m68k/cpu.h +++ /dev/null @@ -1,244 +0,0 @@ -/* - * m68k virtual CPU header - * - * Copyright (c) 2005-2007 CodeSourcery - * Written by Paul Brook - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ -#ifndef CPU_M68K_H -#define CPU_M68K_H - -#define TARGET_LONG_BITS 32 - -#define CPUArchState struct CPUM68KState - -#include "qemu-common.h" -#include "exec/cpu-defs.h" - -#include "fpu/softfloat.h" - -#define MAX_QREGS 32 - -#define EXCP_ACCESS 2 /* Access (MMU) error. */ -#define EXCP_ADDRESS 3 /* Address error. */ -#define EXCP_ILLEGAL 4 /* Illegal instruction. */ -#define EXCP_DIV0 5 /* Divide by zero */ -#define EXCP_PRIVILEGE 8 /* Privilege violation. */ -#define EXCP_TRACE 9 -#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */ -#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */ -#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */ -#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */ -#define EXCP_FORMAT 14 /* RTE format error. */ -#define EXCP_UNINITIALIZED 15 -#define EXCP_TRAP0 32 /* User trap #0. */ -#define EXCP_TRAP15 47 /* User trap #15. */ -#define EXCP_UNSUPPORTED 61 -#define EXCP_ICE 13 - -#define EXCP_RTE 0x100 -#define EXCP_HALT_INSN 0x101 - -#define NB_MMU_MODES 2 - -typedef struct CPUM68KState { - uint32_t dregs[8]; - uint32_t aregs[8]; - uint32_t pc; - uint32_t sr; - - /* SSP and USP. The current_sp is stored in aregs[7], the other here. */ - int current_sp; - uint32_t sp[2]; - - /* Condition flags. */ - uint32_t cc_op; - uint32_t cc_dest; - uint32_t cc_src; - uint32_t cc_x; - - float64 fregs[8]; - float64 fp_result; - uint32_t fpcr; - uint32_t fpsr; - float_status fp_status; - - uint64_t mactmp; - /* EMAC Hardware deals with 48-bit values composed of one 32-bit and - two 8-bit parts. We store a single 64-bit value and - rearrange/extend this when changing modes. */ - uint64_t macc[4]; - uint32_t macsr; - uint32_t mac_mask; - - /* Temporary storage for DIV helpers. */ - uint32_t div1; - uint32_t div2; - - /* MMU status. */ - struct { - uint32_t ar; - } mmu; - - /* Control registers. */ - uint32_t vbr; - uint32_t mbar; - uint32_t rambar0; - uint32_t cacr; - - int pending_vector; - int pending_level; - - uint32_t qregs[MAX_QREGS]; - - CPU_COMMON - - /* Fields from here on are preserved across CPU reset. */ - uint32_t features; -} CPUM68KState; - -#include "cpu-qom.h" - -void m68k_tcg_init(void); -void m68k_cpu_init_gdb(M68kCPU *cpu); -M68kCPU *cpu_m68k_init(const char *cpu_model); -int cpu_m68k_exec(CPUState *cpu); -/* you can call this signal handler from your SIGBUS and SIGSEGV - signal handlers to inform the virtual CPU of exceptions. non zero - is returned if the signal was handled by the virtual CPU. */ -int cpu_m68k_signal_handler(int host_signum, void *pinfo, - void *puc); -void cpu_m68k_flush_flags(CPUM68KState *, int); - -enum { - CC_OP_DYNAMIC, /* Use env->cc_op */ - CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */ - CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */ - CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */ - CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */ - CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */ - CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */ - CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */ - CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */ - CC_OP_SHIFT, /* CC_DEST = result, CC_SRC = carry */ -}; - -#define CCF_C 0x01 -#define CCF_V 0x02 -#define CCF_Z 0x04 -#define CCF_N 0x08 -#define CCF_X 0x10 - -#define SR_I_SHIFT 8 -#define SR_I 0x0700 -#define SR_M 0x1000 -#define SR_S 0x2000 -#define SR_T 0x8000 - -#define M68K_SSP 0 -#define M68K_USP 1 - -/* CACR fields are implementation defined, but some bits are common. */ -#define M68K_CACR_EUSP 0x10 - -#define MACSR_PAV0 0x100 -#define MACSR_OMC 0x080 -#define MACSR_SU 0x040 -#define MACSR_FI 0x020 -#define MACSR_RT 0x010 -#define MACSR_N 0x008 -#define MACSR_Z 0x004 -#define MACSR_V 0x002 -#define MACSR_EV 0x001 - -void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector); -void m68k_set_macsr(CPUM68KState *env, uint32_t val); -void m68k_switch_sp(CPUM68KState *env); - -#define M68K_FPCR_PREC (1 << 6) - -void do_m68k_semihosting(CPUM68KState *env, int nr); - -/* There are 4 ColdFire core ISA revisions: A, A+, B and C. - Each feature covers the subset of instructions common to the - ISA revisions mentioned. */ - -enum m68k_features { - M68K_FEATURE_CF_ISA_A, - M68K_FEATURE_CF_ISA_B, /* (ISA B or C). */ - M68K_FEATURE_CF_ISA_APLUSC, /* BIT/BITREV, FF1, STRLDSR (ISA A+ or C). */ - M68K_FEATURE_BRAL, /* Long unconditional branch. (ISA A+ or B). */ - M68K_FEATURE_CF_FPU, - M68K_FEATURE_CF_MAC, - M68K_FEATURE_CF_EMAC, - M68K_FEATURE_CF_EMAC_B, /* Revision B EMAC (dual accumulate). */ - M68K_FEATURE_USP, /* User Stack Pointer. (ISA A+, B or C). */ - M68K_FEATURE_EXT_FULL, /* 68020+ full extension word. */ - M68K_FEATURE_WORD_INDEX /* word sized address index registers. */ -}; - -static inline int m68k_feature(CPUM68KState *env, int feature) -{ - return (env->features & (1u << feature)) != 0; -} - -void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf); - -void register_m68k_insns (CPUM68KState *env); - -#ifdef CONFIG_USER_ONLY -/* Linux uses 8k pages. */ -#define TARGET_PAGE_BITS 13 -#else -/* Smallest TLB entry size is 1k. */ -#define TARGET_PAGE_BITS 10 -#endif - -#define TARGET_PHYS_ADDR_SPACE_BITS 32 -#define TARGET_VIRT_ADDR_SPACE_BITS 32 - -#define cpu_init(cpu_model) CPU(cpu_m68k_init(cpu_model)) - -#define cpu_exec cpu_m68k_exec -#define cpu_signal_handler cpu_m68k_signal_handler -#define cpu_list m68k_cpu_list - -/* MMU modes definitions */ -#define MMU_MODE0_SUFFIX _kernel -#define MMU_MODE1_SUFFIX _user -#define MMU_USER_IDX 1 -static inline int cpu_mmu_index (CPUM68KState *env, bool ifetch) -{ - return (env->sr & SR_S) == 0 ? 1 : 0; -} - -int m68k_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, - int mmu_idx); - -#include "exec/cpu-all.h" - -static inline void cpu_get_tb_cpu_state(CPUM68KState *env, target_ulong *pc, - target_ulong *cs_base, int *flags) -{ - *pc = env->pc; - *cs_base = 0; - *flags = (env->fpcr & M68K_FPCR_PREC) /* Bit 6 */ - | (env->sr & SR_S) /* Bit 13 */ - | ((env->macsr >> 4) & 0xf); /* Bits 0-3 */ -} - -#include "exec/exec-all.h" - -#endif diff --git a/qemu/target-m68k/gdbstub.c b/qemu/target-m68k/gdbstub.c deleted file mode 100644 index f02bb5caf..000000000 --- a/qemu/target-m68k/gdbstub.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * m68k gdb server stub - * - * Copyright (c) 2003-2005 Fabrice Bellard - * Copyright (c) 2013 SUSE LINUX Products GmbH - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "exec/gdbstub.h" - -int m68k_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - if (n < 8) { - /* D0-D7 */ - return gdb_get_reg32(mem_buf, env->dregs[n]); - } else if (n < 16) { - /* A0-A7 */ - return gdb_get_reg32(mem_buf, env->aregs[n - 8]); - } else { - switch (n) { - case 16: - return gdb_get_reg32(mem_buf, env->sr); - case 17: - return gdb_get_reg32(mem_buf, env->pc); - } - } - /* FP registers not included here because they vary between - ColdFire and m68k. Use XML bits for these. */ - return 0; -} - -int m68k_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - uint32_t tmp; - - tmp = ldl_p(mem_buf); - - if (n < 8) { - /* D0-D7 */ - env->dregs[n] = tmp; - } else if (n < 16) { - /* A0-A7 */ - env->aregs[n - 8] = tmp; - } else { - switch (n) { - case 16: - env->sr = tmp; - break; - case 17: - env->pc = tmp; - break; - default: - return 0; - } - } - return 4; -} diff --git a/qemu/target-m68k/helper.c b/qemu/target-m68k/helper.c deleted file mode 100644 index a8f6d9d6a..000000000 --- a/qemu/target-m68k/helper.c +++ /dev/null @@ -1,887 +0,0 @@ -/* - * m68k op helpers - * - * Copyright (c) 2006-2007 CodeSourcery - * Written by Paul Brook - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "exec/gdbstub.h" - -#include "exec/helper-proto.h" - -#define SIGNBIT (1u << 31) - -/* Sort alphabetically, except for "any". */ -static gint m68k_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_M68K_CPU) == 0) { - return 1; - } else if (strcmp(name_b, "any-" TYPE_M68K_CPU) == 0) { - return -1; - } else { - return strcasecmp(name_a, name_b); - } -} - -static void m68k_cpu_list_entry(gpointer data, gpointer user_data) -{ - ObjectClass *c = data; - CPUListState *s = user_data; - const char *typename; - char *name; - - typename = object_class_get_name(c); - name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_M68K_CPU)); - (*s->cpu_fprintf)(s->file, "%s\n", - name); - g_free(name); -} - -void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf) -{ - CPUListState s = { - .file = f, - .cpu_fprintf = cpu_fprintf, - }; - GSList *list; - - list = object_class_get_list(TYPE_M68K_CPU, false); - list = g_slist_sort(list, m68k_cpu_list_compare); - g_slist_foreach(list, m68k_cpu_list_entry, &s); - g_slist_free(list); -} - -static int fpu_gdb_get_reg(CPUM68KState *env, uint8_t *mem_buf, int n) -{ - if (n < 8) { - stfq_p(mem_buf, env->fregs[n]); - return 8; - } - if (n < 11) { - /* FP control registers (not implemented) */ - memset(mem_buf, 0, 4); - return 4; - } - return 0; -} - -static int fpu_gdb_set_reg(CPUM68KState *env, uint8_t *mem_buf, int n) -{ - if (n < 8) { - env->fregs[n] = ldfq_p(mem_buf); - return 8; - } - if (n < 11) { - /* FP control registers (not implemented) */ - return 4; - } - return 0; -} - -M68kCPU *cpu_m68k_init(const char *cpu_model) -{ - M68kCPU *cpu; - CPUM68KState *env; - ObjectClass *oc; - - oc = cpu_class_by_name(TYPE_M68K_CPU, cpu_model); - if (oc == NULL) { - return NULL; - } - cpu = M68K_CPU(object_new(object_class_get_name(oc))); - env = &cpu->env; - - register_m68k_insns(env); - - object_property_set_bool(OBJECT(cpu), true, "realized", NULL); - - return cpu; -} - -void m68k_cpu_init_gdb(M68kCPU *cpu) -{ - CPUState *cs = CPU(cpu); - CPUM68KState *env = &cpu->env; - - if (m68k_feature(env, M68K_FEATURE_CF_FPU)) { - gdb_register_coprocessor(cs, fpu_gdb_get_reg, fpu_gdb_set_reg, - 11, "cf-fp.xml", 18); - } - /* TODO: Add [E]MAC registers. */ -} - -void cpu_m68k_flush_flags(CPUM68KState *env, int cc_op) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - int flags; - uint32_t src; - uint32_t dest; - uint32_t tmp; - -#define HIGHBIT 0x80000000u - -#define SET_NZ(x) do { \ - if ((x) == 0) \ - flags |= CCF_Z; \ - else if ((int32_t)(x) < 0) \ - flags |= CCF_N; \ - } while (0) - -#define SET_FLAGS_SUB(type, utype) do { \ - SET_NZ((type)dest); \ - tmp = dest + src; \ - if ((utype) tmp < (utype) src) \ - flags |= CCF_C; \ - if ((1u << (sizeof(type) * 8 - 1)) & (tmp ^ dest) & (tmp ^ src)) \ - flags |= CCF_V; \ - } while (0) - - flags = 0; - src = env->cc_src; - dest = env->cc_dest; - switch (cc_op) { - case CC_OP_FLAGS: - flags = dest; - break; - case CC_OP_LOGIC: - SET_NZ(dest); - break; - case CC_OP_ADD: - SET_NZ(dest); - if (dest < src) - flags |= CCF_C; - tmp = dest - src; - if (HIGHBIT & (src ^ dest) & ~(tmp ^ src)) - flags |= CCF_V; - break; - case CC_OP_SUB: - SET_FLAGS_SUB(int32_t, uint32_t); - break; - case CC_OP_CMPB: - SET_FLAGS_SUB(int8_t, uint8_t); - break; - case CC_OP_CMPW: - SET_FLAGS_SUB(int16_t, uint16_t); - break; - case CC_OP_ADDX: - SET_NZ(dest); - if (dest <= src) - flags |= CCF_C; - tmp = dest - src - 1; - if (HIGHBIT & (src ^ dest) & ~(tmp ^ src)) - flags |= CCF_V; - break; - case CC_OP_SUBX: - SET_NZ(dest); - tmp = dest + src + 1; - if (tmp <= src) - flags |= CCF_C; - if (HIGHBIT & (tmp ^ dest) & (tmp ^ src)) - flags |= CCF_V; - break; - case CC_OP_SHIFT: - SET_NZ(dest); - if (src) - flags |= CCF_C; - break; - default: - cpu_abort(CPU(cpu), "Bad CC_OP %d", cc_op); - } - env->cc_op = CC_OP_FLAGS; - env->cc_dest = flags; -} - -void HELPER(movec)(CPUM68KState *env, uint32_t reg, uint32_t val) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - - switch (reg) { - case 0x02: /* CACR */ - env->cacr = val; - m68k_switch_sp(env); - break; - case 0x04: case 0x05: case 0x06: case 0x07: /* ACR[0-3] */ - /* TODO: Implement Access Control Registers. */ - break; - case 0x801: /* VBR */ - env->vbr = val; - break; - /* TODO: Implement control registers. */ - default: - cpu_abort(CPU(cpu), "Unimplemented control register write 0x%x = 0x%x\n", - reg, val); - } -} - -void HELPER(set_macsr)(CPUM68KState *env, uint32_t val) -{ - uint32_t acc; - int8_t exthigh; - uint8_t extlow; - uint64_t regval; - int i; - if ((env->macsr ^ val) & (MACSR_FI | MACSR_SU)) { - for (i = 0; i < 4; i++) { - regval = env->macc[i]; - exthigh = regval >> 40; - if (env->macsr & MACSR_FI) { - acc = regval >> 8; - extlow = regval; - } else { - acc = regval; - extlow = regval >> 32; - } - if (env->macsr & MACSR_FI) { - regval = (((uint64_t)acc) << 8) | extlow; - regval |= ((int64_t)exthigh) << 40; - } else if (env->macsr & MACSR_SU) { - regval = acc | (((int64_t)extlow) << 32); - regval |= ((int64_t)exthigh) << 40; - } else { - regval = acc | (((uint64_t)extlow) << 32); - regval |= ((uint64_t)(uint8_t)exthigh) << 40; - } - env->macc[i] = regval; - } - } - env->macsr = val; -} - -void m68k_switch_sp(CPUM68KState *env) -{ - int new_sp; - - env->sp[env->current_sp] = env->aregs[7]; - new_sp = (env->sr & SR_S && env->cacr & M68K_CACR_EUSP) - ? M68K_SSP : M68K_USP; - env->aregs[7] = env->sp[new_sp]; - env->current_sp = new_sp; -} - -#if defined(CONFIG_USER_ONLY) - -int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, - int mmu_idx) -{ - M68kCPU *cpu = M68K_CPU(cs); - - cs->exception_index = EXCP_ACCESS; - cpu->env.mmu.ar = address; - return 1; -} - -#else - -/* MMU */ - -/* TODO: This will need fixing once the MMU is implemented. */ -hwaddr m68k_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) -{ - return addr; -} - -int m68k_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, - int mmu_idx) -{ - int prot; - - address &= TARGET_PAGE_MASK; - prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - tlb_set_page(cs, address, address, prot, mmu_idx, TARGET_PAGE_SIZE); - return 0; -} - -/* Notify CPU of a pending interrupt. Prioritization and vectoring should - be handled by the interrupt controller. Real hardware only requests - the vector when the interrupt is acknowledged by the CPU. For - simplicitly we calculate it when the interrupt is signalled. */ -void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector) -{ - CPUState *cs = CPU(cpu); - CPUM68KState *env = &cpu->env; - - env->pending_level = level; - env->pending_vector = vector; - if (level) { - cpu_interrupt(cs, CPU_INTERRUPT_HARD); - } else { - cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); - } -} - -#endif - -uint32_t HELPER(bitrev)(uint32_t x) -{ - x = ((x >> 1) & 0x55555555u) | ((x << 1) & 0xaaaaaaaau); - x = ((x >> 2) & 0x33333333u) | ((x << 2) & 0xccccccccu); - x = ((x >> 4) & 0x0f0f0f0fu) | ((x << 4) & 0xf0f0f0f0u); - return bswap32(x); -} - -uint32_t HELPER(ff1)(uint32_t x) -{ - int n; - for (n = 32; x; n--) - x >>= 1; - return n; -} - -uint32_t HELPER(sats)(uint32_t val, uint32_t ccr) -{ - /* The result has the opposite sign to the original value. */ - if (ccr & CCF_V) - val = (((int32_t)val) >> 31) ^ SIGNBIT; - return val; -} - -uint32_t HELPER(subx_cc)(CPUM68KState *env, uint32_t op1, uint32_t op2) -{ - uint32_t res; - uint32_t old_flags; - - old_flags = env->cc_dest; - if (env->cc_x) { - env->cc_x = (op1 <= op2); - env->cc_op = CC_OP_SUBX; - res = op1 - (op2 + 1); - } else { - env->cc_x = (op1 < op2); - env->cc_op = CC_OP_SUB; - res = op1 - op2; - } - env->cc_dest = res; - env->cc_src = op2; - cpu_m68k_flush_flags(env, env->cc_op); - /* !Z is sticky. */ - env->cc_dest &= (old_flags | ~CCF_Z); - return res; -} - -uint32_t HELPER(addx_cc)(CPUM68KState *env, uint32_t op1, uint32_t op2) -{ - uint32_t res; - uint32_t old_flags; - - old_flags = env->cc_dest; - if (env->cc_x) { - res = op1 + op2 + 1; - env->cc_x = (res <= op2); - env->cc_op = CC_OP_ADDX; - } else { - res = op1 + op2; - env->cc_x = (res < op2); - env->cc_op = CC_OP_ADD; - } - env->cc_dest = res; - env->cc_src = op2; - cpu_m68k_flush_flags(env, env->cc_op); - /* !Z is sticky. */ - env->cc_dest &= (old_flags | ~CCF_Z); - return res; -} - -uint32_t HELPER(xflag_lt)(uint32_t a, uint32_t b) -{ - return a < b; -} - -void HELPER(set_sr)(CPUM68KState *env, uint32_t val) -{ - env->sr = val & 0xffff; - m68k_switch_sp(env); -} - -uint32_t HELPER(shl_cc)(CPUM68KState *env, uint32_t val, uint32_t shift) -{ - uint32_t result; - uint32_t cf; - - shift &= 63; - if (shift == 0) { - result = val; - cf = env->cc_src & CCF_C; - } else if (shift < 32) { - result = val << shift; - cf = (val >> (32 - shift)) & 1; - } else if (shift == 32) { - result = 0; - cf = val & 1; - } else /* shift > 32 */ { - result = 0; - cf = 0; - } - env->cc_src = cf; - env->cc_x = (cf != 0); - env->cc_dest = result; - return result; -} - -uint32_t HELPER(shr_cc)(CPUM68KState *env, uint32_t val, uint32_t shift) -{ - uint32_t result; - uint32_t cf; - - shift &= 63; - if (shift == 0) { - result = val; - cf = env->cc_src & CCF_C; - } else if (shift < 32) { - result = val >> shift; - cf = (val >> (shift - 1)) & 1; - } else if (shift == 32) { - result = 0; - cf = val >> 31; - } else /* shift > 32 */ { - result = 0; - cf = 0; - } - env->cc_src = cf; - env->cc_x = (cf != 0); - env->cc_dest = result; - return result; -} - -uint32_t HELPER(sar_cc)(CPUM68KState *env, uint32_t val, uint32_t shift) -{ - uint32_t result; - uint32_t cf; - - shift &= 63; - if (shift == 0) { - result = val; - cf = (env->cc_src & CCF_C) != 0; - } else if (shift < 32) { - result = (int32_t)val >> shift; - cf = (val >> (shift - 1)) & 1; - } else /* shift >= 32 */ { - result = (int32_t)val >> 31; - cf = val >> 31; - } - env->cc_src = cf; - env->cc_x = cf; - env->cc_dest = result; - return result; -} - -/* FPU helpers. */ -uint32_t HELPER(f64_to_i32)(CPUM68KState *env, float64 val) -{ - return float64_to_int32(val, &env->fp_status); -} - -float32 HELPER(f64_to_f32)(CPUM68KState *env, float64 val) -{ - return float64_to_float32(val, &env->fp_status); -} - -float64 HELPER(i32_to_f64)(CPUM68KState *env, uint32_t val) -{ - return int32_to_float64(val, &env->fp_status); -} - -float64 HELPER(f32_to_f64)(CPUM68KState *env, float32 val) -{ - return float32_to_float64(val, &env->fp_status); -} - -float64 HELPER(iround_f64)(CPUM68KState *env, float64 val) -{ - return float64_round_to_int(val, &env->fp_status); -} - -float64 HELPER(itrunc_f64)(CPUM68KState *env, float64 val) -{ - return float64_trunc_to_int(val, &env->fp_status); -} - -float64 HELPER(sqrt_f64)(CPUM68KState *env, float64 val) -{ - return float64_sqrt(val, &env->fp_status); -} - -float64 HELPER(abs_f64)(float64 val) -{ - return float64_abs(val); -} - -float64 HELPER(chs_f64)(float64 val) -{ - return float64_chs(val); -} - -float64 HELPER(add_f64)(CPUM68KState *env, float64 a, float64 b) -{ - return float64_add(a, b, &env->fp_status); -} - -float64 HELPER(sub_f64)(CPUM68KState *env, float64 a, float64 b) -{ - return float64_sub(a, b, &env->fp_status); -} - -float64 HELPER(mul_f64)(CPUM68KState *env, float64 a, float64 b) -{ - return float64_mul(a, b, &env->fp_status); -} - -float64 HELPER(div_f64)(CPUM68KState *env, float64 a, float64 b) -{ - return float64_div(a, b, &env->fp_status); -} - -float64 HELPER(sub_cmp_f64)(CPUM68KState *env, float64 a, float64 b) -{ - /* ??? This may incorrectly raise exceptions. */ - /* ??? Should flush denormals to zero. */ - float64 res; - res = float64_sub(a, b, &env->fp_status); - if (float64_is_quiet_nan(res)) { - /* +/-inf compares equal against itself, but sub returns nan. */ - if (!float64_is_quiet_nan(a) - && !float64_is_quiet_nan(b)) { - res = float64_zero; - if (float64_lt_quiet(a, res, &env->fp_status)) - res = float64_chs(res); - } - } - return res; -} - -uint32_t HELPER(compare_f64)(CPUM68KState *env, float64 val) -{ - return float64_compare_quiet(val, float64_zero, &env->fp_status); -} - -/* MAC unit. */ -/* FIXME: The MAC unit implementation is a bit of a mess. Some helpers - take values, others take register numbers and manipulate the contents - in-place. */ -void HELPER(mac_move)(CPUM68KState *env, uint32_t dest, uint32_t src) -{ - uint32_t mask; - env->macc[dest] = env->macc[src]; - mask = MACSR_PAV0 << dest; - if (env->macsr & (MACSR_PAV0 << src)) - env->macsr |= mask; - else - env->macsr &= ~mask; -} - -uint64_t HELPER(macmuls)(CPUM68KState *env, uint32_t op1, uint32_t op2) -{ - int64_t product; - int64_t res; - - product = (uint64_t)op1 * op2; - res = (product << 24) >> 24; - if (res != product) { - env->macsr |= MACSR_V; - if (env->macsr & MACSR_OMC) { - /* Make sure the accumulate operation overflows. */ - if (product < 0) - res = ~(1ll << 50); - else - res = 1ll << 50; - } - } - return res; -} - -uint64_t HELPER(macmulu)(CPUM68KState *env, uint32_t op1, uint32_t op2) -{ - uint64_t product; - - product = (uint64_t)op1 * op2; - if (product & (0xffffffull << 40)) { - env->macsr |= MACSR_V; - if (env->macsr & MACSR_OMC) { - /* Make sure the accumulate operation overflows. */ - product = 1ll << 50; - } else { - product &= ((1ull << 40) - 1); - } - } - return product; -} - -uint64_t HELPER(macmulf)(CPUM68KState *env, uint32_t op1, uint32_t op2) -{ - uint64_t product; - uint32_t remainder; - - product = (uint64_t)op1 * op2; - if (env->macsr & MACSR_RT) { - remainder = product & 0xffffff; - product >>= 24; - if (remainder > 0x800000) - product++; - else if (remainder == 0x800000) - product += (product & 1); - } else { - product >>= 24; - } - return product; -} - -void HELPER(macsats)(CPUM68KState *env, uint32_t acc) -{ - int64_t tmp; - int64_t result; - tmp = env->macc[acc]; - result = ((tmp << 16) >> 16); - if (result != tmp) { - env->macsr |= MACSR_V; - } - if (env->macsr & MACSR_V) { - env->macsr |= MACSR_PAV0 << acc; - if (env->macsr & MACSR_OMC) { - /* The result is saturated to 32 bits, despite overflow occurring - at 48 bits. Seems weird, but that's what the hardware docs - say. */ - result = (result >> 63) ^ 0x7fffffff; - } - } - env->macc[acc] = result; -} - -void HELPER(macsatu)(CPUM68KState *env, uint32_t acc) -{ - uint64_t val; - - val = env->macc[acc]; - if (val & (0xffffull << 48)) { - env->macsr |= MACSR_V; - } - if (env->macsr & MACSR_V) { - env->macsr |= MACSR_PAV0 << acc; - if (env->macsr & MACSR_OMC) { - if (val > (1ull << 53)) - val = 0; - else - val = (1ull << 48) - 1; - } else { - val &= ((1ull << 48) - 1); - } - } - env->macc[acc] = val; -} - -void HELPER(macsatf)(CPUM68KState *env, uint32_t acc) -{ - int64_t sum; - int64_t result; - - sum = env->macc[acc]; - result = (sum << 16) >> 16; - if (result != sum) { - env->macsr |= MACSR_V; - } - if (env->macsr & MACSR_V) { - env->macsr |= MACSR_PAV0 << acc; - if (env->macsr & MACSR_OMC) { - result = (result >> 63) ^ 0x7fffffffffffll; - } - } - env->macc[acc] = result; -} - -void HELPER(mac_set_flags)(CPUM68KState *env, uint32_t acc) -{ - uint64_t val; - val = env->macc[acc]; - if (val == 0) { - env->macsr |= MACSR_Z; - } else if (val & (1ull << 47)) { - env->macsr |= MACSR_N; - } - if (env->macsr & (MACSR_PAV0 << acc)) { - env->macsr |= MACSR_V; - } - if (env->macsr & MACSR_FI) { - val = ((int64_t)val) >> 40; - if (val != 0 && val != -1) - env->macsr |= MACSR_EV; - } else if (env->macsr & MACSR_SU) { - val = ((int64_t)val) >> 32; - if (val != 0 && val != -1) - env->macsr |= MACSR_EV; - } else { - if ((val >> 32) != 0) - env->macsr |= MACSR_EV; - } -} - -void HELPER(flush_flags)(CPUM68KState *env, uint32_t cc_op) -{ - cpu_m68k_flush_flags(env, cc_op); -} - -uint32_t HELPER(get_macf)(CPUM68KState *env, uint64_t val) -{ - int rem; - uint32_t result; - - if (env->macsr & MACSR_SU) { - /* 16-bit rounding. */ - rem = val & 0xffffff; - val = (val >> 24) & 0xffffu; - if (rem > 0x800000) - val++; - else if (rem == 0x800000) - val += (val & 1); - } else if (env->macsr & MACSR_RT) { - /* 32-bit rounding. */ - rem = val & 0xff; - val >>= 8; - if (rem > 0x80) - val++; - else if (rem == 0x80) - val += (val & 1); - } else { - /* No rounding. */ - val >>= 8; - } - if (env->macsr & MACSR_OMC) { - /* Saturate. */ - if (env->macsr & MACSR_SU) { - if (val != (uint16_t) val) { - result = ((val >> 63) ^ 0x7fff) & 0xffff; - } else { - result = val & 0xffff; - } - } else { - if (val != (uint32_t)val) { - result = ((uint32_t)(val >> 63) & 0x7fffffff); - } else { - result = (uint32_t)val; - } - } - } else { - /* No saturation. */ - if (env->macsr & MACSR_SU) { - result = val & 0xffff; - } else { - result = (uint32_t)val; - } - } - return result; -} - -uint32_t HELPER(get_macs)(uint64_t val) -{ - if (val == (int32_t)val) { - return (int32_t)val; - } else { - return (val >> 61) ^ ~SIGNBIT; - } -} - -uint32_t HELPER(get_macu)(uint64_t val) -{ - if ((val >> 32) == 0) { - return (uint32_t)val; - } else { - return 0xffffffffu; - } -} - -uint32_t HELPER(get_mac_extf)(CPUM68KState *env, uint32_t acc) -{ - uint32_t val; - val = env->macc[acc] & 0x00ff; - val = (env->macc[acc] >> 32) & 0xff00; - val |= (env->macc[acc + 1] << 16) & 0x00ff0000; - val |= (env->macc[acc + 1] >> 16) & 0xff000000; - return val; -} - -uint32_t HELPER(get_mac_exti)(CPUM68KState *env, uint32_t acc) -{ - uint32_t val; - val = (env->macc[acc] >> 32) & 0xffff; - val |= (env->macc[acc + 1] >> 16) & 0xffff0000; - return val; -} - -void HELPER(set_mac_extf)(CPUM68KState *env, uint32_t val, uint32_t acc) -{ - int64_t res; - int32_t tmp; - res = env->macc[acc] & 0xffffffff00ull; - tmp = (int16_t)(val & 0xff00); - res |= ((int64_t)tmp) << 32; - res |= val & 0xff; - env->macc[acc] = res; - res = env->macc[acc + 1] & 0xffffffff00ull; - tmp = (val & 0xff000000); - res |= ((int64_t)tmp) << 16; - res |= (val >> 16) & 0xff; - env->macc[acc + 1] = res; -} - -void HELPER(set_mac_exts)(CPUM68KState *env, uint32_t val, uint32_t acc) -{ - int64_t res; - int32_t tmp; - res = (uint32_t)env->macc[acc]; - tmp = (int16_t)val; - res |= ((int64_t)tmp) << 32; - env->macc[acc] = res; - res = (uint32_t)env->macc[acc + 1]; - tmp = val & 0xffff0000; - res |= (int64_t)tmp << 16; - env->macc[acc + 1] = res; -} - -void HELPER(set_mac_extu)(CPUM68KState *env, uint32_t val, uint32_t acc) -{ - uint64_t res; - res = (uint32_t)env->macc[acc]; - res |= ((uint64_t)(val & 0xffff)) << 32; - env->macc[acc] = res; - res = (uint32_t)env->macc[acc + 1]; - res |= (uint64_t)(val & 0xffff0000) << 16; - env->macc[acc + 1] = res; -} - -void m68k_cpu_exec_enter(CPUState *cs) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - env->cc_op = CC_OP_FLAGS; - env->cc_dest = env->sr & 0xf; - env->cc_x = (env->sr >> 4) & 1; -} - -void m68k_cpu_exec_exit(CPUState *cs) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - cpu_m68k_flush_flags(env, env->cc_op); - env->cc_op = CC_OP_FLAGS; - env->sr = (env->sr & 0xffe0) | env->cc_dest | (env->cc_x << 4); -} diff --git a/qemu/target-m68k/helper.h b/qemu/target-m68k/helper.h deleted file mode 100644 index f4e5fdf02..000000000 --- a/qemu/target-m68k/helper.h +++ /dev/null @@ -1,50 +0,0 @@ -DEF_HELPER_1(bitrev, i32, i32) -DEF_HELPER_1(ff1, i32, i32) -DEF_HELPER_2(sats, i32, i32, i32) -DEF_HELPER_2(divu, void, env, i32) -DEF_HELPER_2(divs, void, env, i32) -DEF_HELPER_3(addx_cc, i32, env, i32, i32) -DEF_HELPER_3(subx_cc, i32, env, i32, i32) -DEF_HELPER_3(shl_cc, i32, env, i32, i32) -DEF_HELPER_3(shr_cc, i32, env, i32, i32) -DEF_HELPER_3(sar_cc, i32, env, i32, i32) -DEF_HELPER_2(xflag_lt, i32, i32, i32) -DEF_HELPER_2(set_sr, void, env, i32) -DEF_HELPER_3(movec, void, env, i32, i32) - -DEF_HELPER_2(f64_to_i32, f32, env, f64) -DEF_HELPER_2(f64_to_f32, f32, env, f64) -DEF_HELPER_2(i32_to_f64, f64, env, i32) -DEF_HELPER_2(f32_to_f64, f64, env, f32) -DEF_HELPER_2(iround_f64, f64, env, f64) -DEF_HELPER_2(itrunc_f64, f64, env, f64) -DEF_HELPER_2(sqrt_f64, f64, env, f64) -DEF_HELPER_1(abs_f64, f64, f64) -DEF_HELPER_1(chs_f64, f64, f64) -DEF_HELPER_3(add_f64, f64, env, f64, f64) -DEF_HELPER_3(sub_f64, f64, env, f64, f64) -DEF_HELPER_3(mul_f64, f64, env, f64, f64) -DEF_HELPER_3(div_f64, f64, env, f64, f64) -DEF_HELPER_3(sub_cmp_f64, f64, env, f64, f64) -DEF_HELPER_2(compare_f64, i32, env, f64) - -DEF_HELPER_3(mac_move, void, env, i32, i32) -DEF_HELPER_3(macmulf, i64, env, i32, i32) -DEF_HELPER_3(macmuls, i64, env, i32, i32) -DEF_HELPER_3(macmulu, i64, env, i32, i32) -DEF_HELPER_2(macsats, void, env, i32) -DEF_HELPER_2(macsatu, void, env, i32) -DEF_HELPER_2(macsatf, void, env, i32) -DEF_HELPER_2(mac_set_flags, void, env, i32) -DEF_HELPER_2(set_macsr, void, env, i32) -DEF_HELPER_2(get_macf, i32, env, i64) -DEF_HELPER_1(get_macs, i32, i64) -DEF_HELPER_1(get_macu, i32, i64) -DEF_HELPER_2(get_mac_extf, i32, env, i32) -DEF_HELPER_2(get_mac_exti, i32, env, i32) -DEF_HELPER_3(set_mac_extf, void, env, i32, i32) -DEF_HELPER_3(set_mac_exts, void, env, i32, i32) -DEF_HELPER_3(set_mac_extu, void, env, i32, i32) - -DEF_HELPER_2(flush_flags, void, env, i32) -DEF_HELPER_2(raise_exception, void, env, i32) diff --git a/qemu/target-m68k/m68k-semi.c b/qemu/target-m68k/m68k-semi.c deleted file mode 100644 index f360ef3e1..000000000 --- a/qemu/target-m68k/m68k-semi.c +++ /dev/null @@ -1,461 +0,0 @@ -/* - * m68k/ColdFire Semihosting syscall interface - * - * Copyright (c) 2005-2007 CodeSourcery. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" - -#include "cpu.h" -#if defined(CONFIG_USER_ONLY) -#include "qemu.h" -#define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024) -#else -#include "qemu-common.h" -#include "exec/gdbstub.h" -#include "exec/softmmu-semi.h" -#endif -#include "sysemu/sysemu.h" - -#define HOSTED_EXIT 0 -#define HOSTED_INIT_SIM 1 -#define HOSTED_OPEN 2 -#define HOSTED_CLOSE 3 -#define HOSTED_READ 4 -#define HOSTED_WRITE 5 -#define HOSTED_LSEEK 6 -#define HOSTED_RENAME 7 -#define HOSTED_UNLINK 8 -#define HOSTED_STAT 9 -#define HOSTED_FSTAT 10 -#define HOSTED_GETTIMEOFDAY 11 -#define HOSTED_ISATTY 12 -#define HOSTED_SYSTEM 13 - -typedef uint32_t gdb_mode_t; -typedef uint32_t gdb_time_t; - -struct m68k_gdb_stat { - uint32_t gdb_st_dev; /* device */ - uint32_t gdb_st_ino; /* inode */ - gdb_mode_t gdb_st_mode; /* protection */ - uint32_t gdb_st_nlink; /* number of hard links */ - uint32_t gdb_st_uid; /* user ID of owner */ - uint32_t gdb_st_gid; /* group ID of owner */ - uint32_t gdb_st_rdev; /* device type (if inode device) */ - uint64_t gdb_st_size; /* total size, in bytes */ - uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */ - uint64_t gdb_st_blocks; /* number of blocks allocated */ - gdb_time_t gdb_st_atime; /* time of last access */ - gdb_time_t gdb_st_mtime; /* time of last modification */ - gdb_time_t gdb_st_ctime; /* time of last change */ -} QEMU_PACKED; - -struct gdb_timeval { - gdb_time_t tv_sec; /* second */ - uint64_t tv_usec; /* microsecond */ -} QEMU_PACKED; - -#define GDB_O_RDONLY 0x0 -#define GDB_O_WRONLY 0x1 -#define GDB_O_RDWR 0x2 -#define GDB_O_APPEND 0x8 -#define GDB_O_CREAT 0x200 -#define GDB_O_TRUNC 0x400 -#define GDB_O_EXCL 0x800 - -static int translate_openflags(int flags) -{ - int hf; - - if (flags & GDB_O_WRONLY) - hf = O_WRONLY; - else if (flags & GDB_O_RDWR) - hf = O_RDWR; - else - hf = O_RDONLY; - - if (flags & GDB_O_APPEND) hf |= O_APPEND; - if (flags & GDB_O_CREAT) hf |= O_CREAT; - if (flags & GDB_O_TRUNC) hf |= O_TRUNC; - if (flags & GDB_O_EXCL) hf |= O_EXCL; - - return hf; -} - -static void translate_stat(CPUM68KState *env, target_ulong addr, struct stat *s) -{ - struct m68k_gdb_stat *p; - - if (!(p = lock_user(VERIFY_WRITE, addr, sizeof(struct m68k_gdb_stat), 0))) - /* FIXME - should this return an error code? */ - return; - p->gdb_st_dev = cpu_to_be32(s->st_dev); - p->gdb_st_ino = cpu_to_be32(s->st_ino); - p->gdb_st_mode = cpu_to_be32(s->st_mode); - p->gdb_st_nlink = cpu_to_be32(s->st_nlink); - p->gdb_st_uid = cpu_to_be32(s->st_uid); - p->gdb_st_gid = cpu_to_be32(s->st_gid); - p->gdb_st_rdev = cpu_to_be32(s->st_rdev); - p->gdb_st_size = cpu_to_be64(s->st_size); -#ifdef _WIN32 - /* Windows stat is missing some fields. */ - p->gdb_st_blksize = 0; - p->gdb_st_blocks = 0; -#else - p->gdb_st_blksize = cpu_to_be64(s->st_blksize); - p->gdb_st_blocks = cpu_to_be64(s->st_blocks); -#endif - p->gdb_st_atime = cpu_to_be32(s->st_atime); - p->gdb_st_mtime = cpu_to_be32(s->st_mtime); - p->gdb_st_ctime = cpu_to_be32(s->st_ctime); - unlock_user(p, addr, sizeof(struct m68k_gdb_stat)); -} - -static void m68k_semi_return_u32(CPUM68KState *env, uint32_t ret, uint32_t err) -{ - target_ulong args = env->dregs[1]; - if (put_user_u32(ret, args) || - put_user_u32(err, args + 4)) { - /* The m68k semihosting ABI does not provide any way to report this - * error to the guest, so the best we can do is log it in qemu. - * It is always a guest error not to pass us a valid argument block. - */ - qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value " - "discarded because argument block not writable\n"); - } -} - -static void m68k_semi_return_u64(CPUM68KState *env, uint64_t ret, uint32_t err) -{ - target_ulong args = env->dregs[1]; - if (put_user_u32(ret >> 32, args) || - put_user_u32(ret, args + 4) || - put_user_u32(err, args + 8)) { - /* No way to report this via m68k semihosting ABI; just log it */ - qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value " - "discarded because argument block not writable\n"); - } -} - -static int m68k_semi_is_fseek; - -static void m68k_semi_cb(CPUState *cs, target_ulong ret, target_ulong err) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - if (m68k_semi_is_fseek) { - /* FIXME: We've already lost the high bits of the fseek - return value. */ - m68k_semi_return_u64(env, ret, err); - m68k_semi_is_fseek = 0; - } else { - m68k_semi_return_u32(env, ret, err); - } -} - -/* Read the input value from the argument block; fail the semihosting - * call if the memory read fails. - */ -#define GET_ARG(n) do { \ - if (get_user_ual(arg ## n, args + (n) * 4)) { \ - result = -1; \ - errno = EFAULT; \ - goto failed; \ - } \ -} while (0) - -void do_m68k_semihosting(CPUM68KState *env, int nr) -{ - uint32_t args; - target_ulong arg0, arg1, arg2, arg3; - void *p; - void *q; - uint32_t len; - uint32_t result; - - args = env->dregs[1]; - switch (nr) { - case HOSTED_EXIT: - gdb_exit(env, env->dregs[0]); - exit(env->dregs[0]); - case HOSTED_OPEN: - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - GET_ARG(3); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "open,%s,%x,%x", arg0, (int)arg1, - arg2, arg3); - return; - } else { - p = lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = open(p, translate_openflags(arg2), arg3); - unlock_user(p, arg0, 0); - } - } - break; - case HOSTED_CLOSE: - { - /* Ignore attempts to close stdin/out/err. */ - GET_ARG(0); - int fd = arg0; - if (fd > 2) { - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "close,%x", arg0); - return; - } else { - result = close(fd); - } - } else { - result = 0; - } - break; - } - case HOSTED_READ: - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - len = arg2; - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "read,%x,%x,%x", - arg0, arg1, len); - return; - } else { - p = lock_user(VERIFY_WRITE, arg1, len, 0); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = read(arg0, p, len); - unlock_user(p, arg1, len); - } - } - break; - case HOSTED_WRITE: - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - len = arg2; - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "write,%x,%x,%x", - arg0, arg1, len); - return; - } else { - p = lock_user(VERIFY_READ, arg1, len, 1); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = write(arg0, p, len); - unlock_user(p, arg0, 0); - } - } - break; - case HOSTED_LSEEK: - { - uint64_t off; - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - GET_ARG(3); - off = (uint32_t)arg2 | ((uint64_t)arg1 << 32); - if (use_gdb_syscalls()) { - m68k_semi_is_fseek = 1; - gdb_do_syscall(m68k_semi_cb, "fseek,%x,%lx,%x", - arg0, off, arg3); - } else { - off = lseek(arg0, off, arg3); - m68k_semi_return_u64(env, off, errno); - } - return; - } - case HOSTED_RENAME: - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - GET_ARG(3); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "rename,%s,%s", - arg0, (int)arg1, arg2, (int)arg3); - return; - } else { - p = lock_user_string(arg0); - q = lock_user_string(arg2); - if (!p || !q) { - /* FIXME - check error code? */ - result = -1; - } else { - result = rename(p, q); - } - unlock_user(p, arg0, 0); - unlock_user(q, arg2, 0); - } - break; - case HOSTED_UNLINK: - GET_ARG(0); - GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "unlink,%s", - arg0, (int)arg1); - return; - } else { - p = lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = unlink(p); - unlock_user(p, arg0, 0); - } - } - break; - case HOSTED_STAT: - GET_ARG(0); - GET_ARG(1); - GET_ARG(2); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "stat,%s,%x", - arg0, (int)arg1, arg2); - return; - } else { - struct stat s; - p = lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = stat(p, &s); - unlock_user(p, arg0, 0); - } - if (result == 0) { - translate_stat(env, arg2, &s); - } - } - break; - case HOSTED_FSTAT: - GET_ARG(0); - GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "fstat,%x,%x", - arg0, arg1); - return; - } else { - struct stat s; - result = fstat(arg0, &s); - if (result == 0) { - translate_stat(env, arg1, &s); - } - } - break; - case HOSTED_GETTIMEOFDAY: - GET_ARG(0); - GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "gettimeofday,%x,%x", - arg0, arg1); - return; - } else { - qemu_timeval tv; - struct gdb_timeval *p; - result = qemu_gettimeofday(&tv); - if (result != 0) { - if (!(p = lock_user(VERIFY_WRITE, - arg0, sizeof(struct gdb_timeval), 0))) { - /* FIXME - check error code? */ - result = -1; - } else { - p->tv_sec = cpu_to_be32(tv.tv_sec); - p->tv_usec = cpu_to_be64(tv.tv_usec); - unlock_user(p, arg0, sizeof(struct gdb_timeval)); - } - } - } - break; - case HOSTED_ISATTY: - GET_ARG(0); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "isatty,%x", arg0); - return; - } else { - result = isatty(arg0); - } - break; - case HOSTED_SYSTEM: - GET_ARG(0); - GET_ARG(1); - if (use_gdb_syscalls()) { - gdb_do_syscall(m68k_semi_cb, "system,%s", - arg0, (int)arg1); - return; - } else { - p = lock_user_string(arg0); - if (!p) { - /* FIXME - check error code? */ - result = -1; - } else { - result = system(p); - unlock_user(p, arg0, 0); - } - } - break; - case HOSTED_INIT_SIM: -#if defined(CONFIG_USER_ONLY) - { - CPUState *cs = CPU(m68k_env_get_cpu(env)); - TaskState *ts = cs->opaque; - /* Allocate the heap using sbrk. */ - if (!ts->heap_limit) { - abi_ulong ret; - uint32_t size; - uint32_t base; - - base = do_brk(0); - size = SEMIHOSTING_HEAP_SIZE; - /* Try a big heap, and reduce the size if that fails. */ - for (;;) { - ret = do_brk(base + size); - if (ret >= (base + size)) { - break; - } - size >>= 1; - } - ts->heap_limit = base + size; - } - /* This call may happen before we have writable memory, so return - values directly in registers. */ - env->dregs[1] = ts->heap_limit; - env->aregs[7] = ts->stack_base; - } -#else - /* FIXME: This is wrong for boards where RAM does not start at - address zero. */ - env->dregs[1] = ram_size; - env->aregs[7] = ram_size; -#endif - return; - default: - cpu_abort(CPU(m68k_env_get_cpu(env)), "Unsupported semihosting syscall %d\n", nr); - result = 0; - } -failed: - m68k_semi_return_u32(env, result, errno); -} diff --git a/qemu/target-m68k/op_helper.c b/qemu/target-m68k/op_helper.c deleted file mode 100644 index 17d0a1191..000000000 --- a/qemu/target-m68k/op_helper.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * M68K helper routines - * - * Copyright (c) 2007 CodeSourcery - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ -#include "qemu/osdep.h" -#include "cpu.h" -#include "exec/helper-proto.h" -#include "exec/cpu_ldst.h" -#include "exec/semihost.h" - -#if defined(CONFIG_USER_ONLY) - -void m68k_cpu_do_interrupt(CPUState *cs) -{ - cs->exception_index = -1; -} - -static inline void do_interrupt_m68k_hardirq(CPUM68KState *env) -{ -} - -#else - -/* Try to fill the TLB and return an exception if error. If retaddr is - NULL, it means that the function was called in C code (i.e. not - from generated code or from helper.c) */ -void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx, - uintptr_t retaddr) -{ - int ret; - - ret = m68k_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx); - if (unlikely(ret)) { - if (retaddr) { - /* now we have a real cpu fault */ - cpu_restore_state(cs, retaddr); - } - cpu_loop_exit(cs); - } -} - -static void do_rte(CPUM68KState *env) -{ - uint32_t sp; - uint32_t fmt; - - sp = env->aregs[7]; - fmt = cpu_ldl_kernel(env, sp); - env->pc = cpu_ldl_kernel(env, sp + 4); - sp |= (fmt >> 28) & 3; - env->sr = fmt & 0xffff; - env->aregs[7] = sp + 8; - m68k_switch_sp(env); -} - -static void do_interrupt_all(CPUM68KState *env, int is_hw) -{ - CPUState *cs = CPU(m68k_env_get_cpu(env)); - uint32_t sp; - uint32_t fmt; - uint32_t retaddr; - uint32_t vector; - - fmt = 0; - retaddr = env->pc; - - if (!is_hw) { - switch (cs->exception_index) { - case EXCP_RTE: - /* Return from an exception. */ - do_rte(env); - return; - case EXCP_HALT_INSN: - if (semihosting_enabled() - && (env->sr & SR_S) != 0 - && (env->pc & 3) == 0 - && cpu_lduw_code(env, env->pc - 4) == 0x4e71 - && cpu_ldl_code(env, env->pc) == 0x4e7bf000) { - env->pc += 4; - do_m68k_semihosting(env, env->dregs[0]); - return; - } - cs->halted = 1; - cs->exception_index = EXCP_HLT; - cpu_loop_exit(cs); - return; - } - if (cs->exception_index >= EXCP_TRAP0 - && cs->exception_index <= EXCP_TRAP15) { - /* Move the PC after the trap instruction. */ - retaddr += 2; - } - } - - vector = cs->exception_index << 2; - - fmt |= 0x40000000; - fmt |= vector << 16; - fmt |= env->sr; - - env->sr |= SR_S; - if (is_hw) { - env->sr = (env->sr & ~SR_I) | (env->pending_level << SR_I_SHIFT); - env->sr &= ~SR_M; - } - m68k_switch_sp(env); - sp = env->aregs[7]; - fmt |= (sp & 3) << 28; - - /* ??? This could cause MMU faults. */ - sp &= ~3; - sp -= 4; - cpu_stl_kernel(env, sp, retaddr); - sp -= 4; - cpu_stl_kernel(env, sp, fmt); - env->aregs[7] = sp; - /* Jump to vector. */ - env->pc = cpu_ldl_kernel(env, env->vbr + vector); -} - -void m68k_cpu_do_interrupt(CPUState *cs) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - do_interrupt_all(env, 0); -} - -static inline void do_interrupt_m68k_hardirq(CPUM68KState *env) -{ - do_interrupt_all(env, 1); -} -#endif - -bool m68k_cpu_exec_interrupt(CPUState *cs, int interrupt_request) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - - if (interrupt_request & CPU_INTERRUPT_HARD - && ((env->sr & SR_I) >> SR_I_SHIFT) < env->pending_level) { - /* Real hardware gets the interrupt vector via an IACK cycle - at this point. Current emulated hardware doesn't rely on - this, so we provide/save the vector when the interrupt is - first signalled. */ - cs->exception_index = env->pending_vector; - do_interrupt_m68k_hardirq(env); - return true; - } - return false; -} - -static void raise_exception(CPUM68KState *env, int tt) -{ - CPUState *cs = CPU(m68k_env_get_cpu(env)); - - cs->exception_index = tt; - cpu_loop_exit(cs); -} - -void HELPER(raise_exception)(CPUM68KState *env, uint32_t tt) -{ - raise_exception(env, tt); -} - -void HELPER(divu)(CPUM68KState *env, uint32_t word) -{ - uint32_t num; - uint32_t den; - uint32_t quot; - uint32_t rem; - uint32_t flags; - - num = env->div1; - den = env->div2; - /* ??? This needs to make sure the throwing location is accurate. */ - if (den == 0) { - raise_exception(env, EXCP_DIV0); - } - quot = num / den; - rem = num % den; - flags = 0; - if (word && quot > 0xffff) - flags |= CCF_V; - if (quot == 0) - flags |= CCF_Z; - else if ((int32_t)quot < 0) - flags |= CCF_N; - env->div1 = quot; - env->div2 = rem; - env->cc_dest = flags; -} - -void HELPER(divs)(CPUM68KState *env, uint32_t word) -{ - int32_t num; - int32_t den; - int32_t quot; - int32_t rem; - int32_t flags; - - num = env->div1; - den = env->div2; - if (den == 0) { - raise_exception(env, EXCP_DIV0); - } - quot = num / den; - rem = num % den; - flags = 0; - if (word && quot != (int16_t)quot) - flags |= CCF_V; - if (quot == 0) - flags |= CCF_Z; - else if (quot < 0) - flags |= CCF_N; - env->div1 = quot; - env->div2 = rem; - env->cc_dest = flags; -} diff --git a/qemu/target-m68k/qregs.def b/qemu/target-m68k/qregs.def deleted file mode 100644 index 204663e1a..000000000 --- a/qemu/target-m68k/qregs.def +++ /dev/null @@ -1,11 +0,0 @@ -DEFF64(FP_RESULT, fp_result) -DEFO32(PC, pc) -DEFO32(SR, sr) -DEFO32(CC_OP, cc_op) -DEFO32(CC_DEST, cc_dest) -DEFO32(CC_SRC, cc_src) -DEFO32(CC_X, cc_x) -DEFO32(DIV1, div1) -DEFO32(DIV2, div2) -DEFO32(MACSR, macsr) -DEFO32(MAC_MASK, mac_mask) diff --git a/qemu/target-m68k/translate.c b/qemu/target-m68k/translate.c deleted file mode 100644 index 7560c3a80..000000000 --- a/qemu/target-m68k/translate.c +++ /dev/null @@ -1,3101 +0,0 @@ -/* - * m68k translation - * - * Copyright (c) 2005-2007 CodeSourcery - * Written by Paul Brook - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "disas/disas.h" -#include "tcg-op.h" -#include "qemu/log.h" -#include "exec/cpu_ldst.h" - -#include "exec/helper-proto.h" -#include "exec/helper-gen.h" - -#include "trace-tcg.h" -#include "exec/log.h" - - -//#define DEBUG_DISPATCH 1 - -/* Fake floating point. */ -#define tcg_gen_mov_f64 tcg_gen_mov_i64 -#define tcg_gen_qemu_ldf64 tcg_gen_qemu_ld64 -#define tcg_gen_qemu_stf64 tcg_gen_qemu_st64 - -#define DEFO32(name, offset) static TCGv QREG_##name; -#define DEFO64(name, offset) static TCGv_i64 QREG_##name; -#define DEFF64(name, offset) static TCGv_i64 QREG_##name; -#include "qregs.def" -#undef DEFO32 -#undef DEFO64 -#undef DEFF64 - -static TCGv_i32 cpu_halted; -static TCGv_i32 cpu_exception_index; - -static TCGv_env cpu_env; - -static char cpu_reg_names[3*8*3 + 5*4]; -static TCGv cpu_dregs[8]; -static TCGv cpu_aregs[8]; -static TCGv_i64 cpu_fregs[8]; -static TCGv_i64 cpu_macc[4]; - -#define DREG(insn, pos) cpu_dregs[((insn) >> (pos)) & 7] -#define AREG(insn, pos) cpu_aregs[((insn) >> (pos)) & 7] -#define FREG(insn, pos) cpu_fregs[((insn) >> (pos)) & 7] -#define MACREG(acc) cpu_macc[acc] -#define QREG_SP cpu_aregs[7] - -static TCGv NULL_QREG; -#define IS_NULL_QREG(t) (TCGV_EQUAL(t, NULL_QREG)) -/* Used to distinguish stores from bad addressing modes. */ -static TCGv store_dummy; - -#include "exec/gen-icount.h" - -void m68k_tcg_init(void) -{ - char *p; - int i; - - cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); - -#define DEFO32(name, offset) \ - QREG_##name = tcg_global_mem_new_i32(cpu_env, \ - offsetof(CPUM68KState, offset), #name); -#define DEFO64(name, offset) \ - QREG_##name = tcg_global_mem_new_i64(cpu_env, \ - offsetof(CPUM68KState, offset), #name); -#define DEFF64(name, offset) DEFO64(name, offset) -#include "qregs.def" -#undef DEFO32 -#undef DEFO64 -#undef DEFF64 - - cpu_halted = tcg_global_mem_new_i32(cpu_env, - -offsetof(M68kCPU, env) + - offsetof(CPUState, halted), "HALTED"); - cpu_exception_index = tcg_global_mem_new_i32(cpu_env, - -offsetof(M68kCPU, env) + - offsetof(CPUState, exception_index), - "EXCEPTION"); - - p = cpu_reg_names; - for (i = 0; i < 8; i++) { - sprintf(p, "D%d", i); - cpu_dregs[i] = tcg_global_mem_new(cpu_env, - offsetof(CPUM68KState, dregs[i]), p); - p += 3; - sprintf(p, "A%d", i); - cpu_aregs[i] = tcg_global_mem_new(cpu_env, - offsetof(CPUM68KState, aregs[i]), p); - p += 3; - sprintf(p, "F%d", i); - cpu_fregs[i] = tcg_global_mem_new_i64(cpu_env, - offsetof(CPUM68KState, fregs[i]), p); - p += 3; - } - for (i = 0; i < 4; i++) { - sprintf(p, "ACC%d", i); - cpu_macc[i] = tcg_global_mem_new_i64(cpu_env, - offsetof(CPUM68KState, macc[i]), p); - p += 5; - } - - NULL_QREG = tcg_global_mem_new(cpu_env, -4, "NULL"); - store_dummy = tcg_global_mem_new(cpu_env, -8, "NULL"); -} - -/* internal defines */ -typedef struct DisasContext { - CPUM68KState *env; - target_ulong insn_pc; /* Start of the current instruction. */ - target_ulong pc; - int is_jmp; - int cc_op; - int user; - uint32_t fpcr; - struct TranslationBlock *tb; - int singlestep_enabled; - TCGv_i64 mactmp; - int done_mac; -} DisasContext; - -#define DISAS_JUMP_NEXT 4 - -#if defined(CONFIG_USER_ONLY) -#define IS_USER(s) 1 -#else -#define IS_USER(s) s->user -#endif - -/* XXX: move that elsewhere */ -/* ??? Fix exceptions. */ -static void *gen_throws_exception; -#define gen_last_qop NULL - -#define OS_BYTE 0 -#define OS_WORD 1 -#define OS_LONG 2 -#define OS_SINGLE 4 -#define OS_DOUBLE 5 - -typedef void (*disas_proc)(CPUM68KState *env, DisasContext *s, uint16_t insn); - -#ifdef DEBUG_DISPATCH -#define DISAS_INSN(name) \ - static void real_disas_##name(CPUM68KState *env, DisasContext *s, \ - uint16_t insn); \ - static void disas_##name(CPUM68KState *env, DisasContext *s, \ - uint16_t insn) \ - { \ - qemu_log("Dispatch " #name "\n"); \ - real_disas_##name(s, env, insn); \ - } \ - static void real_disas_##name(CPUM68KState *env, DisasContext *s, \ - uint16_t insn) -#else -#define DISAS_INSN(name) \ - static void disas_##name(CPUM68KState *env, DisasContext *s, \ - uint16_t insn) -#endif - -/* Generate a load from the specified address. Narrow values are - sign extended to full register width. */ -static inline TCGv gen_load(DisasContext * s, int opsize, TCGv addr, int sign) -{ - TCGv tmp; - int index = IS_USER(s); - tmp = tcg_temp_new_i32(); - switch(opsize) { - case OS_BYTE: - if (sign) - tcg_gen_qemu_ld8s(tmp, addr, index); - else - tcg_gen_qemu_ld8u(tmp, addr, index); - break; - case OS_WORD: - if (sign) - tcg_gen_qemu_ld16s(tmp, addr, index); - else - tcg_gen_qemu_ld16u(tmp, addr, index); - break; - case OS_LONG: - case OS_SINGLE: - tcg_gen_qemu_ld32u(tmp, addr, index); - break; - default: - g_assert_not_reached(); - } - gen_throws_exception = gen_last_qop; - return tmp; -} - -static inline TCGv_i64 gen_load64(DisasContext * s, TCGv addr) -{ - TCGv_i64 tmp; - int index = IS_USER(s); - tmp = tcg_temp_new_i64(); - tcg_gen_qemu_ldf64(tmp, addr, index); - gen_throws_exception = gen_last_qop; - return tmp; -} - -/* Generate a store. */ -static inline void gen_store(DisasContext *s, int opsize, TCGv addr, TCGv val) -{ - int index = IS_USER(s); - switch(opsize) { - case OS_BYTE: - tcg_gen_qemu_st8(val, addr, index); - break; - case OS_WORD: - tcg_gen_qemu_st16(val, addr, index); - break; - case OS_LONG: - case OS_SINGLE: - tcg_gen_qemu_st32(val, addr, index); - break; - default: - g_assert_not_reached(); - } - gen_throws_exception = gen_last_qop; -} - -static inline void gen_store64(DisasContext *s, TCGv addr, TCGv_i64 val) -{ - int index = IS_USER(s); - tcg_gen_qemu_stf64(val, addr, index); - gen_throws_exception = gen_last_qop; -} - -typedef enum { - EA_STORE, - EA_LOADU, - EA_LOADS -} ea_what; - -/* Generate an unsigned load if VAL is 0 a signed load if val is -1, - otherwise generate a store. */ -static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val, - ea_what what) -{ - if (what == EA_STORE) { - gen_store(s, opsize, addr, val); - return store_dummy; - } else { - return gen_load(s, opsize, addr, what == EA_LOADS); - } -} - -/* Read a 32-bit immediate constant. */ -static inline uint32_t read_im32(CPUM68KState *env, DisasContext *s) -{ - uint32_t im; - im = ((uint32_t)cpu_lduw_code(env, s->pc)) << 16; - s->pc += 2; - im |= cpu_lduw_code(env, s->pc); - s->pc += 2; - return im; -} - -/* Calculate and address index. */ -static TCGv gen_addr_index(uint16_t ext, TCGv tmp) -{ - TCGv add; - int scale; - - add = (ext & 0x8000) ? AREG(ext, 12) : DREG(ext, 12); - if ((ext & 0x800) == 0) { - tcg_gen_ext16s_i32(tmp, add); - add = tmp; - } - scale = (ext >> 9) & 3; - if (scale != 0) { - tcg_gen_shli_i32(tmp, add, scale); - add = tmp; - } - return add; -} - -/* Handle a base + index + displacement effective addresss. - A NULL_QREG base means pc-relative. */ -static TCGv gen_lea_indexed(CPUM68KState *env, DisasContext *s, TCGv base) -{ - uint32_t offset; - uint16_t ext; - TCGv add; - TCGv tmp; - uint32_t bd, od; - - offset = s->pc; - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - - if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) - return NULL_QREG; - - if (ext & 0x100) { - /* full extension word format */ - if (!m68k_feature(s->env, M68K_FEATURE_EXT_FULL)) - return NULL_QREG; - - if ((ext & 0x30) > 0x10) { - /* base displacement */ - if ((ext & 0x30) == 0x20) { - bd = (int16_t)cpu_lduw_code(env, s->pc); - s->pc += 2; - } else { - bd = read_im32(env, s); - } - } else { - bd = 0; - } - tmp = tcg_temp_new(); - if ((ext & 0x44) == 0) { - /* pre-index */ - add = gen_addr_index(ext, tmp); - } else { - add = NULL_QREG; - } - if ((ext & 0x80) == 0) { - /* base not suppressed */ - if (IS_NULL_QREG(base)) { - base = tcg_const_i32(offset + bd); - bd = 0; - } - if (!IS_NULL_QREG(add)) { - tcg_gen_add_i32(tmp, add, base); - add = tmp; - } else { - add = base; - } - } - if (!IS_NULL_QREG(add)) { - if (bd != 0) { - tcg_gen_addi_i32(tmp, add, bd); - add = tmp; - } - } else { - add = tcg_const_i32(bd); - } - if ((ext & 3) != 0) { - /* memory indirect */ - base = gen_load(s, OS_LONG, add, 0); - if ((ext & 0x44) == 4) { - add = gen_addr_index(ext, tmp); - tcg_gen_add_i32(tmp, add, base); - add = tmp; - } else { - add = base; - } - if ((ext & 3) > 1) { - /* outer displacement */ - if ((ext & 3) == 2) { - od = (int16_t)cpu_lduw_code(env, s->pc); - s->pc += 2; - } else { - od = read_im32(env, s); - } - } else { - od = 0; - } - if (od != 0) { - tcg_gen_addi_i32(tmp, add, od); - add = tmp; - } - } - } else { - /* brief extension word format */ - tmp = tcg_temp_new(); - add = gen_addr_index(ext, tmp); - if (!IS_NULL_QREG(base)) { - tcg_gen_add_i32(tmp, add, base); - if ((int8_t)ext) - tcg_gen_addi_i32(tmp, tmp, (int8_t)ext); - } else { - tcg_gen_addi_i32(tmp, add, offset + (int8_t)ext); - } - add = tmp; - } - return add; -} - -/* Update the CPU env CC_OP state. */ -static inline void gen_flush_cc_op(DisasContext *s) -{ - if (s->cc_op != CC_OP_DYNAMIC) - tcg_gen_movi_i32(QREG_CC_OP, s->cc_op); -} - -/* Evaluate all the CC flags. */ -static inline void gen_flush_flags(DisasContext *s) -{ - if (s->cc_op == CC_OP_FLAGS) - return; - gen_flush_cc_op(s); - gen_helper_flush_flags(cpu_env, QREG_CC_OP); - s->cc_op = CC_OP_FLAGS; -} - -static void gen_logic_cc(DisasContext *s, TCGv val) -{ - tcg_gen_mov_i32(QREG_CC_DEST, val); - s->cc_op = CC_OP_LOGIC; -} - -static void gen_update_cc_add(TCGv dest, TCGv src) -{ - tcg_gen_mov_i32(QREG_CC_DEST, dest); - tcg_gen_mov_i32(QREG_CC_SRC, src); -} - -static inline int opsize_bytes(int opsize) -{ - switch (opsize) { - case OS_BYTE: return 1; - case OS_WORD: return 2; - case OS_LONG: return 4; - case OS_SINGLE: return 4; - case OS_DOUBLE: return 8; - default: - g_assert_not_reached(); - } -} - -/* Assign value to a register. If the width is less than the register width - only the low part of the register is set. */ -static void gen_partset_reg(int opsize, TCGv reg, TCGv val) -{ - TCGv tmp; - switch (opsize) { - case OS_BYTE: - tcg_gen_andi_i32(reg, reg, 0xffffff00); - tmp = tcg_temp_new(); - tcg_gen_ext8u_i32(tmp, val); - tcg_gen_or_i32(reg, reg, tmp); - break; - case OS_WORD: - tcg_gen_andi_i32(reg, reg, 0xffff0000); - tmp = tcg_temp_new(); - tcg_gen_ext16u_i32(tmp, val); - tcg_gen_or_i32(reg, reg, tmp); - break; - case OS_LONG: - case OS_SINGLE: - tcg_gen_mov_i32(reg, val); - break; - default: - g_assert_not_reached(); - } -} - -/* Sign or zero extend a value. */ -static inline TCGv gen_extend(TCGv val, int opsize, int sign) -{ - TCGv tmp; - - switch (opsize) { - case OS_BYTE: - tmp = tcg_temp_new(); - if (sign) - tcg_gen_ext8s_i32(tmp, val); - else - tcg_gen_ext8u_i32(tmp, val); - break; - case OS_WORD: - tmp = tcg_temp_new(); - if (sign) - tcg_gen_ext16s_i32(tmp, val); - else - tcg_gen_ext16u_i32(tmp, val); - break; - case OS_LONG: - case OS_SINGLE: - tmp = val; - break; - default: - g_assert_not_reached(); - } - return tmp; -} - -/* Generate code for an "effective address". Does not adjust the base - register for autoincrement addressing modes. */ -static TCGv gen_lea(CPUM68KState *env, DisasContext *s, uint16_t insn, - int opsize) -{ - TCGv reg; - TCGv tmp; - uint16_t ext; - uint32_t offset; - - switch ((insn >> 3) & 7) { - case 0: /* Data register direct. */ - case 1: /* Address register direct. */ - return NULL_QREG; - case 2: /* Indirect register */ - case 3: /* Indirect postincrement. */ - return AREG(insn, 0); - case 4: /* Indirect predecrememnt. */ - reg = AREG(insn, 0); - tmp = tcg_temp_new(); - tcg_gen_subi_i32(tmp, reg, opsize_bytes(opsize)); - return tmp; - case 5: /* Indirect displacement. */ - reg = AREG(insn, 0); - tmp = tcg_temp_new(); - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - tcg_gen_addi_i32(tmp, reg, (int16_t)ext); - return tmp; - case 6: /* Indirect index + displacement. */ - reg = AREG(insn, 0); - return gen_lea_indexed(env, s, reg); - case 7: /* Other */ - switch (insn & 7) { - case 0: /* Absolute short. */ - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - return tcg_const_i32(offset); - case 1: /* Absolute long. */ - offset = read_im32(env, s); - return tcg_const_i32(offset); - case 2: /* pc displacement */ - offset = s->pc; - offset += cpu_ldsw_code(env, s->pc); - s->pc += 2; - return tcg_const_i32(offset); - case 3: /* pc index+displacement. */ - return gen_lea_indexed(env, s, NULL_QREG); - case 4: /* Immediate. */ - default: - return NULL_QREG; - } - } - /* Should never happen. */ - return NULL_QREG; -} - -/* Helper function for gen_ea. Reuse the computed address between the - for read/write operands. */ -static inline TCGv gen_ea_once(CPUM68KState *env, DisasContext *s, - uint16_t insn, int opsize, TCGv val, - TCGv *addrp, ea_what what) -{ - TCGv tmp; - - if (addrp && what == EA_STORE) { - tmp = *addrp; - } else { - tmp = gen_lea(env, s, insn, opsize); - if (IS_NULL_QREG(tmp)) - return tmp; - if (addrp) - *addrp = tmp; - } - return gen_ldst(s, opsize, tmp, val, what); -} - -/* Generate code to load/store a value from/into an EA. If VAL > 0 this is - a write otherwise it is a read (0 == sign extend, -1 == zero extend). - ADDRP is non-null for readwrite operands. */ -static TCGv gen_ea(CPUM68KState *env, DisasContext *s, uint16_t insn, - int opsize, TCGv val, TCGv *addrp, ea_what what) -{ - TCGv reg; - TCGv result; - uint32_t offset; - - switch ((insn >> 3) & 7) { - case 0: /* Data register direct. */ - reg = DREG(insn, 0); - if (what == EA_STORE) { - gen_partset_reg(opsize, reg, val); - return store_dummy; - } else { - return gen_extend(reg, opsize, what == EA_LOADS); - } - case 1: /* Address register direct. */ - reg = AREG(insn, 0); - if (what == EA_STORE) { - tcg_gen_mov_i32(reg, val); - return store_dummy; - } else { - return gen_extend(reg, opsize, what == EA_LOADS); - } - case 2: /* Indirect register */ - reg = AREG(insn, 0); - return gen_ldst(s, opsize, reg, val, what); - case 3: /* Indirect postincrement. */ - reg = AREG(insn, 0); - result = gen_ldst(s, opsize, reg, val, what); - /* ??? This is not exception safe. The instruction may still - fault after this point. */ - if (what == EA_STORE || !addrp) - tcg_gen_addi_i32(reg, reg, opsize_bytes(opsize)); - return result; - case 4: /* Indirect predecrememnt. */ - { - TCGv tmp; - if (addrp && what == EA_STORE) { - tmp = *addrp; - } else { - tmp = gen_lea(env, s, insn, opsize); - if (IS_NULL_QREG(tmp)) - return tmp; - if (addrp) - *addrp = tmp; - } - result = gen_ldst(s, opsize, tmp, val, what); - /* ??? This is not exception safe. The instruction may still - fault after this point. */ - if (what == EA_STORE || !addrp) { - reg = AREG(insn, 0); - tcg_gen_mov_i32(reg, tmp); - } - } - return result; - case 5: /* Indirect displacement. */ - case 6: /* Indirect index + displacement. */ - return gen_ea_once(env, s, insn, opsize, val, addrp, what); - case 7: /* Other */ - switch (insn & 7) { - case 0: /* Absolute short. */ - case 1: /* Absolute long. */ - case 2: /* pc displacement */ - case 3: /* pc index+displacement. */ - return gen_ea_once(env, s, insn, opsize, val, addrp, what); - case 4: /* Immediate. */ - /* Sign extend values for consistency. */ - switch (opsize) { - case OS_BYTE: - if (what == EA_LOADS) { - offset = cpu_ldsb_code(env, s->pc + 1); - } else { - offset = cpu_ldub_code(env, s->pc + 1); - } - s->pc += 2; - break; - case OS_WORD: - if (what == EA_LOADS) { - offset = cpu_ldsw_code(env, s->pc); - } else { - offset = cpu_lduw_code(env, s->pc); - } - s->pc += 2; - break; - case OS_LONG: - offset = read_im32(env, s); - break; - default: - g_assert_not_reached(); - } - return tcg_const_i32(offset); - default: - return NULL_QREG; - } - } - /* Should never happen. */ - return NULL_QREG; -} - -/* This generates a conditional branch, clobbering all temporaries. */ -static void gen_jmpcc(DisasContext *s, int cond, TCGLabel *l1) -{ - TCGv tmp; - - /* TODO: Optimize compare/branch pairs rather than always flushing - flag state to CC_OP_FLAGS. */ - gen_flush_flags(s); - switch (cond) { - case 0: /* T */ - tcg_gen_br(l1); - break; - case 1: /* F */ - break; - case 2: /* HI (!C && !Z) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 3: /* LS (C || Z) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C | CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 4: /* CC (!C) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 5: /* CS (C) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_C); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 6: /* NE (!Z) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 7: /* EQ (Z) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 8: /* VC (!V) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 9: /* VS (V) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_V); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 10: /* PL (!N) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 11: /* MI (N) */ - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 12: /* GE (!(N ^ V)) */ - tmp = tcg_temp_new(); - assert(CCF_V == (CCF_N >> 2)); - tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2); - tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); - tcg_gen_andi_i32(tmp, tmp, CCF_V); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 13: /* LT (N ^ V) */ - tmp = tcg_temp_new(); - assert(CCF_V == (CCF_N >> 2)); - tcg_gen_shri_i32(tmp, QREG_CC_DEST, 2); - tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); - tcg_gen_andi_i32(tmp, tmp, CCF_V); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - case 14: /* GT (!(Z || (N ^ V))) */ - tmp = tcg_temp_new(); - assert(CCF_V == (CCF_N >> 2)); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); - tcg_gen_shri_i32(tmp, tmp, 2); - tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); - tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, l1); - break; - case 15: /* LE (Z || (N ^ V)) */ - tmp = tcg_temp_new(); - assert(CCF_V == (CCF_N >> 2)); - tcg_gen_andi_i32(tmp, QREG_CC_DEST, CCF_N); - tcg_gen_shri_i32(tmp, tmp, 2); - tcg_gen_xor_i32(tmp, tmp, QREG_CC_DEST); - tcg_gen_andi_i32(tmp, tmp, CCF_V | CCF_Z); - tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, l1); - break; - default: - /* Should ever happen. */ - abort(); - } -} - -DISAS_INSN(scc) -{ - TCGLabel *l1; - int cond; - TCGv reg; - - l1 = gen_new_label(); - cond = (insn >> 8) & 0xf; - reg = DREG(insn, 0); - tcg_gen_andi_i32(reg, reg, 0xffffff00); - /* This is safe because we modify the reg directly, with no other values - live. */ - gen_jmpcc(s, cond ^ 1, l1); - tcg_gen_ori_i32(reg, reg, 0xff); - gen_set_label(l1); -} - -/* Force a TB lookup after an instruction that changes the CPU state. */ -static void gen_lookup_tb(DisasContext *s) -{ - gen_flush_cc_op(s); - tcg_gen_movi_i32(QREG_PC, s->pc); - s->is_jmp = DISAS_UPDATE; -} - -/* Generate a jump to an immediate address. */ -static void gen_jmp_im(DisasContext *s, uint32_t dest) -{ - gen_flush_cc_op(s); - tcg_gen_movi_i32(QREG_PC, dest); - s->is_jmp = DISAS_JUMP; -} - -/* Generate a jump to the address in qreg DEST. */ -static void gen_jmp(DisasContext *s, TCGv dest) -{ - gen_flush_cc_op(s); - tcg_gen_mov_i32(QREG_PC, dest); - s->is_jmp = DISAS_JUMP; -} - -static void gen_exception(DisasContext *s, uint32_t where, int nr) -{ - gen_flush_cc_op(s); - gen_jmp_im(s, where); - gen_helper_raise_exception(cpu_env, tcg_const_i32(nr)); -} - -static inline void gen_addr_fault(DisasContext *s) -{ - gen_exception(s, s->insn_pc, EXCP_ADDRESS); -} - -#define SRC_EA(env, result, opsize, op_sign, addrp) do { \ - result = gen_ea(env, s, insn, opsize, NULL_QREG, addrp, \ - op_sign ? EA_LOADS : EA_LOADU); \ - if (IS_NULL_QREG(result)) { \ - gen_addr_fault(s); \ - return; \ - } \ - } while (0) - -#define DEST_EA(env, insn, opsize, val, addrp) do { \ - TCGv ea_result = gen_ea(env, s, insn, opsize, val, addrp, EA_STORE); \ - if (IS_NULL_QREG(ea_result)) { \ - gen_addr_fault(s); \ - return; \ - } \ - } while (0) - -/* Generate a jump to an immediate address. */ -static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) -{ - TranslationBlock *tb; - - tb = s->tb; - if (unlikely(s->singlestep_enabled)) { - gen_exception(s, dest, EXCP_DEBUG); - } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || - (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { - tcg_gen_goto_tb(n); - tcg_gen_movi_i32(QREG_PC, dest); - tcg_gen_exit_tb((uintptr_t)tb + n); - } else { - gen_jmp_im(s, dest); - tcg_gen_exit_tb(0); - } - s->is_jmp = DISAS_TB_JUMP; -} - -DISAS_INSN(undef_mac) -{ - gen_exception(s, s->pc - 2, EXCP_LINEA); -} - -DISAS_INSN(undef_fpu) -{ - gen_exception(s, s->pc - 2, EXCP_LINEF); -} - -DISAS_INSN(undef) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - - gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED); - cpu_abort(CPU(cpu), "Illegal instruction: %04x @ %08x", insn, s->pc - 2); -} - -DISAS_INSN(mulw) -{ - TCGv reg; - TCGv tmp; - TCGv src; - int sign; - - sign = (insn & 0x100) != 0; - reg = DREG(insn, 9); - tmp = tcg_temp_new(); - if (sign) - tcg_gen_ext16s_i32(tmp, reg); - else - tcg_gen_ext16u_i32(tmp, reg); - SRC_EA(env, src, OS_WORD, sign, NULL); - tcg_gen_mul_i32(tmp, tmp, src); - tcg_gen_mov_i32(reg, tmp); - /* Unlike m68k, coldfire always clears the overflow bit. */ - gen_logic_cc(s, tmp); -} - -DISAS_INSN(divw) -{ - TCGv reg; - TCGv tmp; - TCGv src; - int sign; - - sign = (insn & 0x100) != 0; - reg = DREG(insn, 9); - if (sign) { - tcg_gen_ext16s_i32(QREG_DIV1, reg); - } else { - tcg_gen_ext16u_i32(QREG_DIV1, reg); - } - SRC_EA(env, src, OS_WORD, sign, NULL); - tcg_gen_mov_i32(QREG_DIV2, src); - if (sign) { - gen_helper_divs(cpu_env, tcg_const_i32(1)); - } else { - gen_helper_divu(cpu_env, tcg_const_i32(1)); - } - - tmp = tcg_temp_new(); - src = tcg_temp_new(); - tcg_gen_ext16u_i32(tmp, QREG_DIV1); - tcg_gen_shli_i32(src, QREG_DIV2, 16); - tcg_gen_or_i32(reg, tmp, src); - s->cc_op = CC_OP_FLAGS; -} - -DISAS_INSN(divl) -{ - TCGv num; - TCGv den; - TCGv reg; - uint16_t ext; - - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - if (ext & 0x87f8) { - gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); - return; - } - num = DREG(ext, 12); - reg = DREG(ext, 0); - tcg_gen_mov_i32(QREG_DIV1, num); - SRC_EA(env, den, OS_LONG, 0, NULL); - tcg_gen_mov_i32(QREG_DIV2, den); - if (ext & 0x0800) { - gen_helper_divs(cpu_env, tcg_const_i32(0)); - } else { - gen_helper_divu(cpu_env, tcg_const_i32(0)); - } - if ((ext & 7) == ((ext >> 12) & 7)) { - /* div */ - tcg_gen_mov_i32 (reg, QREG_DIV1); - } else { - /* rem */ - tcg_gen_mov_i32 (reg, QREG_DIV2); - } - s->cc_op = CC_OP_FLAGS; -} - -DISAS_INSN(addsub) -{ - TCGv reg; - TCGv dest; - TCGv src; - TCGv tmp; - TCGv addr; - int add; - - add = (insn & 0x4000) != 0; - reg = DREG(insn, 9); - dest = tcg_temp_new(); - if (insn & 0x100) { - SRC_EA(env, tmp, OS_LONG, 0, &addr); - src = reg; - } else { - tmp = reg; - SRC_EA(env, src, OS_LONG, 0, NULL); - } - if (add) { - tcg_gen_add_i32(dest, tmp, src); - gen_helper_xflag_lt(QREG_CC_X, dest, src); - s->cc_op = CC_OP_ADD; - } else { - gen_helper_xflag_lt(QREG_CC_X, tmp, src); - tcg_gen_sub_i32(dest, tmp, src); - s->cc_op = CC_OP_SUB; - } - gen_update_cc_add(dest, src); - if (insn & 0x100) { - DEST_EA(env, insn, OS_LONG, dest, &addr); - } else { - tcg_gen_mov_i32(reg, dest); - } -} - - -/* Reverse the order of the bits in REG. */ -DISAS_INSN(bitrev) -{ - TCGv reg; - reg = DREG(insn, 0); - gen_helper_bitrev(reg, reg); -} - -DISAS_INSN(bitop_reg) -{ - int opsize; - int op; - TCGv src1; - TCGv src2; - TCGv tmp; - TCGv addr; - TCGv dest; - - if ((insn & 0x38) != 0) - opsize = OS_BYTE; - else - opsize = OS_LONG; - op = (insn >> 6) & 3; - SRC_EA(env, src1, opsize, 0, op ? &addr: NULL); - src2 = DREG(insn, 9); - dest = tcg_temp_new(); - - gen_flush_flags(s); - tmp = tcg_temp_new(); - if (opsize == OS_BYTE) - tcg_gen_andi_i32(tmp, src2, 7); - else - tcg_gen_andi_i32(tmp, src2, 31); - src2 = tmp; - tmp = tcg_temp_new(); - tcg_gen_shr_i32(tmp, src1, src2); - tcg_gen_andi_i32(tmp, tmp, 1); - tcg_gen_shli_i32(tmp, tmp, 2); - /* Clear CCF_Z if bit set. */ - tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); - tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); - - tcg_gen_shl_i32(tmp, tcg_const_i32(1), src2); - switch (op) { - case 1: /* bchg */ - tcg_gen_xor_i32(dest, src1, tmp); - break; - case 2: /* bclr */ - tcg_gen_not_i32(tmp, tmp); - tcg_gen_and_i32(dest, src1, tmp); - break; - case 3: /* bset */ - tcg_gen_or_i32(dest, src1, tmp); - break; - default: /* btst */ - break; - } - if (op) - DEST_EA(env, insn, opsize, dest, &addr); -} - -DISAS_INSN(sats) -{ - TCGv reg; - reg = DREG(insn, 0); - gen_flush_flags(s); - gen_helper_sats(reg, reg, QREG_CC_DEST); - gen_logic_cc(s, reg); -} - -static void gen_push(DisasContext *s, TCGv val) -{ - TCGv tmp; - - tmp = tcg_temp_new(); - tcg_gen_subi_i32(tmp, QREG_SP, 4); - gen_store(s, OS_LONG, tmp, val); - tcg_gen_mov_i32(QREG_SP, tmp); -} - -DISAS_INSN(movem) -{ - TCGv addr; - int i; - uint16_t mask; - TCGv reg; - TCGv tmp; - int is_load; - - mask = cpu_lduw_code(env, s->pc); - s->pc += 2; - tmp = gen_lea(env, s, insn, OS_LONG); - if (IS_NULL_QREG(tmp)) { - gen_addr_fault(s); - return; - } - addr = tcg_temp_new(); - tcg_gen_mov_i32(addr, tmp); - is_load = ((insn & 0x0400) != 0); - for (i = 0; i < 16; i++, mask >>= 1) { - if (mask & 1) { - if (i < 8) - reg = DREG(i, 0); - else - reg = AREG(i, 0); - if (is_load) { - tmp = gen_load(s, OS_LONG, addr, 0); - tcg_gen_mov_i32(reg, tmp); - } else { - gen_store(s, OS_LONG, addr, reg); - } - if (mask != 1) - tcg_gen_addi_i32(addr, addr, 4); - } - } -} - -DISAS_INSN(bitop_im) -{ - int opsize; - int op; - TCGv src1; - uint32_t mask; - int bitnum; - TCGv tmp; - TCGv addr; - - if ((insn & 0x38) != 0) - opsize = OS_BYTE; - else - opsize = OS_LONG; - op = (insn >> 6) & 3; - - bitnum = cpu_lduw_code(env, s->pc); - s->pc += 2; - if (bitnum & 0xff00) { - disas_undef(env, s, insn); - return; - } - - SRC_EA(env, src1, opsize, 0, op ? &addr: NULL); - - gen_flush_flags(s); - if (opsize == OS_BYTE) - bitnum &= 7; - else - bitnum &= 31; - mask = 1 << bitnum; - - tmp = tcg_temp_new(); - assert (CCF_Z == (1 << 2)); - if (bitnum > 2) - tcg_gen_shri_i32(tmp, src1, bitnum - 2); - else if (bitnum < 2) - tcg_gen_shli_i32(tmp, src1, 2 - bitnum); - else - tcg_gen_mov_i32(tmp, src1); - tcg_gen_andi_i32(tmp, tmp, CCF_Z); - /* Clear CCF_Z if bit set. */ - tcg_gen_ori_i32(QREG_CC_DEST, QREG_CC_DEST, CCF_Z); - tcg_gen_xor_i32(QREG_CC_DEST, QREG_CC_DEST, tmp); - if (op) { - switch (op) { - case 1: /* bchg */ - tcg_gen_xori_i32(tmp, src1, mask); - break; - case 2: /* bclr */ - tcg_gen_andi_i32(tmp, src1, ~mask); - break; - case 3: /* bset */ - tcg_gen_ori_i32(tmp, src1, mask); - break; - default: /* btst */ - break; - } - DEST_EA(env, insn, opsize, tmp, &addr); - } -} - -DISAS_INSN(arith_im) -{ - int op; - uint32_t im; - TCGv src1; - TCGv dest; - TCGv addr; - - op = (insn >> 9) & 7; - SRC_EA(env, src1, OS_LONG, 0, (op == 6) ? NULL : &addr); - im = read_im32(env, s); - dest = tcg_temp_new(); - switch (op) { - case 0: /* ori */ - tcg_gen_ori_i32(dest, src1, im); - gen_logic_cc(s, dest); - break; - case 1: /* andi */ - tcg_gen_andi_i32(dest, src1, im); - gen_logic_cc(s, dest); - break; - case 2: /* subi */ - tcg_gen_mov_i32(dest, src1); - gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im)); - tcg_gen_subi_i32(dest, dest, im); - gen_update_cc_add(dest, tcg_const_i32(im)); - s->cc_op = CC_OP_SUB; - break; - case 3: /* addi */ - tcg_gen_mov_i32(dest, src1); - tcg_gen_addi_i32(dest, dest, im); - gen_update_cc_add(dest, tcg_const_i32(im)); - gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im)); - s->cc_op = CC_OP_ADD; - break; - case 5: /* eori */ - tcg_gen_xori_i32(dest, src1, im); - gen_logic_cc(s, dest); - break; - case 6: /* cmpi */ - tcg_gen_mov_i32(dest, src1); - tcg_gen_subi_i32(dest, dest, im); - gen_update_cc_add(dest, tcg_const_i32(im)); - s->cc_op = CC_OP_SUB; - break; - default: - abort(); - } - if (op != 6) { - DEST_EA(env, insn, OS_LONG, dest, &addr); - } -} - -DISAS_INSN(byterev) -{ - TCGv reg; - - reg = DREG(insn, 0); - tcg_gen_bswap32_i32(reg, reg); -} - -DISAS_INSN(move) -{ - TCGv src; - TCGv dest; - int op; - int opsize; - - switch (insn >> 12) { - case 1: /* move.b */ - opsize = OS_BYTE; - break; - case 2: /* move.l */ - opsize = OS_LONG; - break; - case 3: /* move.w */ - opsize = OS_WORD; - break; - default: - abort(); - } - SRC_EA(env, src, opsize, 1, NULL); - op = (insn >> 6) & 7; - if (op == 1) { - /* movea */ - /* The value will already have been sign extended. */ - dest = AREG(insn, 9); - tcg_gen_mov_i32(dest, src); - } else { - /* normal move */ - uint16_t dest_ea; - dest_ea = ((insn >> 9) & 7) | (op << 3); - DEST_EA(env, dest_ea, opsize, src, NULL); - /* This will be correct because loads sign extend. */ - gen_logic_cc(s, src); - } -} - -DISAS_INSN(negx) -{ - TCGv reg; - - gen_flush_flags(s); - reg = DREG(insn, 0); - gen_helper_subx_cc(reg, cpu_env, tcg_const_i32(0), reg); -} - -DISAS_INSN(lea) -{ - TCGv reg; - TCGv tmp; - - reg = AREG(insn, 9); - tmp = gen_lea(env, s, insn, OS_LONG); - if (IS_NULL_QREG(tmp)) { - gen_addr_fault(s); - return; - } - tcg_gen_mov_i32(reg, tmp); -} - -DISAS_INSN(clr) -{ - int opsize; - - switch ((insn >> 6) & 3) { - case 0: /* clr.b */ - opsize = OS_BYTE; - break; - case 1: /* clr.w */ - opsize = OS_WORD; - break; - case 2: /* clr.l */ - opsize = OS_LONG; - break; - default: - abort(); - } - DEST_EA(env, insn, opsize, tcg_const_i32(0), NULL); - gen_logic_cc(s, tcg_const_i32(0)); -} - -static TCGv gen_get_ccr(DisasContext *s) -{ - TCGv dest; - - gen_flush_flags(s); - dest = tcg_temp_new(); - tcg_gen_shli_i32(dest, QREG_CC_X, 4); - tcg_gen_or_i32(dest, dest, QREG_CC_DEST); - return dest; -} - -DISAS_INSN(move_from_ccr) -{ - TCGv reg; - TCGv ccr; - - ccr = gen_get_ccr(s); - reg = DREG(insn, 0); - gen_partset_reg(OS_WORD, reg, ccr); -} - -DISAS_INSN(neg) -{ - TCGv reg; - TCGv src1; - - reg = DREG(insn, 0); - src1 = tcg_temp_new(); - tcg_gen_mov_i32(src1, reg); - tcg_gen_neg_i32(reg, src1); - s->cc_op = CC_OP_SUB; - gen_update_cc_add(reg, src1); - gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1); - s->cc_op = CC_OP_SUB; -} - -static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) -{ - tcg_gen_movi_i32(QREG_CC_DEST, val & 0xf); - tcg_gen_movi_i32(QREG_CC_X, (val & 0x10) >> 4); - if (!ccr_only) { - gen_helper_set_sr(cpu_env, tcg_const_i32(val & 0xff00)); - } -} - -static void gen_set_sr(CPUM68KState *env, DisasContext *s, uint16_t insn, - int ccr_only) -{ - TCGv tmp; - TCGv reg; - - s->cc_op = CC_OP_FLAGS; - if ((insn & 0x38) == 0) - { - tmp = tcg_temp_new(); - reg = DREG(insn, 0); - tcg_gen_andi_i32(QREG_CC_DEST, reg, 0xf); - tcg_gen_shri_i32(tmp, reg, 4); - tcg_gen_andi_i32(QREG_CC_X, tmp, 1); - if (!ccr_only) { - gen_helper_set_sr(cpu_env, reg); - } - } - else if ((insn & 0x3f) == 0x3c) - { - uint16_t val; - val = cpu_lduw_code(env, s->pc); - s->pc += 2; - gen_set_sr_im(s, val, ccr_only); - } - else - disas_undef(env, s, insn); -} - -DISAS_INSN(move_to_ccr) -{ - gen_set_sr(env, s, insn, 1); -} - -DISAS_INSN(not) -{ - TCGv reg; - - reg = DREG(insn, 0); - tcg_gen_not_i32(reg, reg); - gen_logic_cc(s, reg); -} - -DISAS_INSN(swap) -{ - TCGv src1; - TCGv src2; - TCGv reg; - - src1 = tcg_temp_new(); - src2 = tcg_temp_new(); - reg = DREG(insn, 0); - tcg_gen_shli_i32(src1, reg, 16); - tcg_gen_shri_i32(src2, reg, 16); - tcg_gen_or_i32(reg, src1, src2); - gen_logic_cc(s, reg); -} - -DISAS_INSN(pea) -{ - TCGv tmp; - - tmp = gen_lea(env, s, insn, OS_LONG); - if (IS_NULL_QREG(tmp)) { - gen_addr_fault(s); - return; - } - gen_push(s, tmp); -} - -DISAS_INSN(ext) -{ - int op; - TCGv reg; - TCGv tmp; - - reg = DREG(insn, 0); - op = (insn >> 6) & 7; - tmp = tcg_temp_new(); - if (op == 3) - tcg_gen_ext16s_i32(tmp, reg); - else - tcg_gen_ext8s_i32(tmp, reg); - if (op == 2) - gen_partset_reg(OS_WORD, reg, tmp); - else - tcg_gen_mov_i32(reg, tmp); - gen_logic_cc(s, tmp); -} - -DISAS_INSN(tst) -{ - int opsize; - TCGv tmp; - - switch ((insn >> 6) & 3) { - case 0: /* tst.b */ - opsize = OS_BYTE; - break; - case 1: /* tst.w */ - opsize = OS_WORD; - break; - case 2: /* tst.l */ - opsize = OS_LONG; - break; - default: - abort(); - } - SRC_EA(env, tmp, opsize, 1, NULL); - gen_logic_cc(s, tmp); -} - -DISAS_INSN(pulse) -{ - /* Implemented as a NOP. */ -} - -DISAS_INSN(illegal) -{ - gen_exception(s, s->pc - 2, EXCP_ILLEGAL); -} - -/* ??? This should be atomic. */ -DISAS_INSN(tas) -{ - TCGv dest; - TCGv src1; - TCGv addr; - - dest = tcg_temp_new(); - SRC_EA(env, src1, OS_BYTE, 1, &addr); - gen_logic_cc(s, src1); - tcg_gen_ori_i32(dest, src1, 0x80); - DEST_EA(env, insn, OS_BYTE, dest, &addr); -} - -DISAS_INSN(mull) -{ - uint16_t ext; - TCGv reg; - TCGv src1; - TCGv dest; - - /* The upper 32 bits of the product are discarded, so - muls.l and mulu.l are functionally equivalent. */ - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - if (ext & 0x87ff) { - gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); - return; - } - reg = DREG(ext, 12); - SRC_EA(env, src1, OS_LONG, 0, NULL); - dest = tcg_temp_new(); - tcg_gen_mul_i32(dest, src1, reg); - tcg_gen_mov_i32(reg, dest); - /* Unlike m68k, coldfire always clears the overflow bit. */ - gen_logic_cc(s, dest); -} - -DISAS_INSN(link) -{ - int16_t offset; - TCGv reg; - TCGv tmp; - - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - reg = AREG(insn, 0); - tmp = tcg_temp_new(); - tcg_gen_subi_i32(tmp, QREG_SP, 4); - gen_store(s, OS_LONG, tmp, reg); - if ((insn & 7) != 7) - tcg_gen_mov_i32(reg, tmp); - tcg_gen_addi_i32(QREG_SP, tmp, offset); -} - -DISAS_INSN(unlk) -{ - TCGv src; - TCGv reg; - TCGv tmp; - - src = tcg_temp_new(); - reg = AREG(insn, 0); - tcg_gen_mov_i32(src, reg); - tmp = gen_load(s, OS_LONG, src, 0); - tcg_gen_mov_i32(reg, tmp); - tcg_gen_addi_i32(QREG_SP, src, 4); -} - -DISAS_INSN(nop) -{ -} - -DISAS_INSN(rts) -{ - TCGv tmp; - - tmp = gen_load(s, OS_LONG, QREG_SP, 0); - tcg_gen_addi_i32(QREG_SP, QREG_SP, 4); - gen_jmp(s, tmp); -} - -DISAS_INSN(jump) -{ - TCGv tmp; - - /* Load the target address first to ensure correct exception - behavior. */ - tmp = gen_lea(env, s, insn, OS_LONG); - if (IS_NULL_QREG(tmp)) { - gen_addr_fault(s); - return; - } - if ((insn & 0x40) == 0) { - /* jsr */ - gen_push(s, tcg_const_i32(s->pc)); - } - gen_jmp(s, tmp); -} - -DISAS_INSN(addsubq) -{ - TCGv src1; - TCGv src2; - TCGv dest; - int val; - TCGv addr; - - SRC_EA(env, src1, OS_LONG, 0, &addr); - val = (insn >> 9) & 7; - if (val == 0) - val = 8; - dest = tcg_temp_new(); - tcg_gen_mov_i32(dest, src1); - if ((insn & 0x38) == 0x08) { - /* Don't update condition codes if the destination is an - address register. */ - if (insn & 0x0100) { - tcg_gen_subi_i32(dest, dest, val); - } else { - tcg_gen_addi_i32(dest, dest, val); - } - } else { - src2 = tcg_const_i32(val); - if (insn & 0x0100) { - gen_helper_xflag_lt(QREG_CC_X, dest, src2); - tcg_gen_subi_i32(dest, dest, val); - s->cc_op = CC_OP_SUB; - } else { - tcg_gen_addi_i32(dest, dest, val); - gen_helper_xflag_lt(QREG_CC_X, dest, src2); - s->cc_op = CC_OP_ADD; - } - gen_update_cc_add(dest, src2); - } - DEST_EA(env, insn, OS_LONG, dest, &addr); -} - -DISAS_INSN(tpf) -{ - switch (insn & 7) { - case 2: /* One extension word. */ - s->pc += 2; - break; - case 3: /* Two extension words. */ - s->pc += 4; - break; - case 4: /* No extension words. */ - break; - default: - disas_undef(env, s, insn); - } -} - -DISAS_INSN(branch) -{ - int32_t offset; - uint32_t base; - int op; - TCGLabel *l1; - - base = s->pc; - op = (insn >> 8) & 0xf; - offset = (int8_t)insn; - if (offset == 0) { - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - } else if (offset == -1) { - offset = read_im32(env, s); - } - if (op == 1) { - /* bsr */ - gen_push(s, tcg_const_i32(s->pc)); - } - gen_flush_cc_op(s); - if (op > 1) { - /* Bcc */ - l1 = gen_new_label(); - gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); - gen_jmp_tb(s, 1, base + offset); - gen_set_label(l1); - gen_jmp_tb(s, 0, s->pc); - } else { - /* Unconditional branch. */ - gen_jmp_tb(s, 0, base + offset); - } -} - -DISAS_INSN(moveq) -{ - uint32_t val; - - val = (int8_t)insn; - tcg_gen_movi_i32(DREG(insn, 9), val); - gen_logic_cc(s, tcg_const_i32(val)); -} - -DISAS_INSN(mvzs) -{ - int opsize; - TCGv src; - TCGv reg; - - if (insn & 0x40) - opsize = OS_WORD; - else - opsize = OS_BYTE; - SRC_EA(env, src, opsize, (insn & 0x80) == 0, NULL); - reg = DREG(insn, 9); - tcg_gen_mov_i32(reg, src); - gen_logic_cc(s, src); -} - -DISAS_INSN(or) -{ - TCGv reg; - TCGv dest; - TCGv src; - TCGv addr; - - reg = DREG(insn, 9); - dest = tcg_temp_new(); - if (insn & 0x100) { - SRC_EA(env, src, OS_LONG, 0, &addr); - tcg_gen_or_i32(dest, src, reg); - DEST_EA(env, insn, OS_LONG, dest, &addr); - } else { - SRC_EA(env, src, OS_LONG, 0, NULL); - tcg_gen_or_i32(dest, src, reg); - tcg_gen_mov_i32(reg, dest); - } - gen_logic_cc(s, dest); -} - -DISAS_INSN(suba) -{ - TCGv src; - TCGv reg; - - SRC_EA(env, src, OS_LONG, 0, NULL); - reg = AREG(insn, 9); - tcg_gen_sub_i32(reg, reg, src); -} - -DISAS_INSN(subx) -{ - TCGv reg; - TCGv src; - - gen_flush_flags(s); - reg = DREG(insn, 9); - src = DREG(insn, 0); - gen_helper_subx_cc(reg, cpu_env, reg, src); -} - -DISAS_INSN(mov3q) -{ - TCGv src; - int val; - - val = (insn >> 9) & 7; - if (val == 0) - val = -1; - src = tcg_const_i32(val); - gen_logic_cc(s, src); - DEST_EA(env, insn, OS_LONG, src, NULL); -} - -DISAS_INSN(cmp) -{ - int op; - TCGv src; - TCGv reg; - TCGv dest; - int opsize; - - op = (insn >> 6) & 3; - switch (op) { - case 0: /* cmp.b */ - opsize = OS_BYTE; - s->cc_op = CC_OP_CMPB; - break; - case 1: /* cmp.w */ - opsize = OS_WORD; - s->cc_op = CC_OP_CMPW; - break; - case 2: /* cmp.l */ - opsize = OS_LONG; - s->cc_op = CC_OP_SUB; - break; - default: - abort(); - } - SRC_EA(env, src, opsize, 1, NULL); - reg = DREG(insn, 9); - dest = tcg_temp_new(); - tcg_gen_sub_i32(dest, reg, src); - gen_update_cc_add(dest, src); -} - -DISAS_INSN(cmpa) -{ - int opsize; - TCGv src; - TCGv reg; - TCGv dest; - - if (insn & 0x100) { - opsize = OS_LONG; - } else { - opsize = OS_WORD; - } - SRC_EA(env, src, opsize, 1, NULL); - reg = AREG(insn, 9); - dest = tcg_temp_new(); - tcg_gen_sub_i32(dest, reg, src); - gen_update_cc_add(dest, src); - s->cc_op = CC_OP_SUB; -} - -DISAS_INSN(eor) -{ - TCGv src; - TCGv reg; - TCGv dest; - TCGv addr; - - SRC_EA(env, src, OS_LONG, 0, &addr); - reg = DREG(insn, 9); - dest = tcg_temp_new(); - tcg_gen_xor_i32(dest, src, reg); - gen_logic_cc(s, dest); - DEST_EA(env, insn, OS_LONG, dest, &addr); -} - -DISAS_INSN(and) -{ - TCGv src; - TCGv reg; - TCGv dest; - TCGv addr; - - reg = DREG(insn, 9); - dest = tcg_temp_new(); - if (insn & 0x100) { - SRC_EA(env, src, OS_LONG, 0, &addr); - tcg_gen_and_i32(dest, src, reg); - DEST_EA(env, insn, OS_LONG, dest, &addr); - } else { - SRC_EA(env, src, OS_LONG, 0, NULL); - tcg_gen_and_i32(dest, src, reg); - tcg_gen_mov_i32(reg, dest); - } - gen_logic_cc(s, dest); -} - -DISAS_INSN(adda) -{ - TCGv src; - TCGv reg; - - SRC_EA(env, src, OS_LONG, 0, NULL); - reg = AREG(insn, 9); - tcg_gen_add_i32(reg, reg, src); -} - -DISAS_INSN(addx) -{ - TCGv reg; - TCGv src; - - gen_flush_flags(s); - reg = DREG(insn, 9); - src = DREG(insn, 0); - gen_helper_addx_cc(reg, cpu_env, reg, src); - s->cc_op = CC_OP_FLAGS; -} - -/* TODO: This could be implemented without helper functions. */ -DISAS_INSN(shift_im) -{ - TCGv reg; - int tmp; - TCGv shift; - - reg = DREG(insn, 0); - tmp = (insn >> 9) & 7; - if (tmp == 0) - tmp = 8; - shift = tcg_const_i32(tmp); - /* No need to flush flags becuse we know we will set C flag. */ - if (insn & 0x100) { - gen_helper_shl_cc(reg, cpu_env, reg, shift); - } else { - if (insn & 8) { - gen_helper_shr_cc(reg, cpu_env, reg, shift); - } else { - gen_helper_sar_cc(reg, cpu_env, reg, shift); - } - } - s->cc_op = CC_OP_SHIFT; -} - -DISAS_INSN(shift_reg) -{ - TCGv reg; - TCGv shift; - - reg = DREG(insn, 0); - shift = DREG(insn, 9); - /* Shift by zero leaves C flag unmodified. */ - gen_flush_flags(s); - if (insn & 0x100) { - gen_helper_shl_cc(reg, cpu_env, reg, shift); - } else { - if (insn & 8) { - gen_helper_shr_cc(reg, cpu_env, reg, shift); - } else { - gen_helper_sar_cc(reg, cpu_env, reg, shift); - } - } - s->cc_op = CC_OP_SHIFT; -} - -DISAS_INSN(ff1) -{ - TCGv reg; - reg = DREG(insn, 0); - gen_logic_cc(s, reg); - gen_helper_ff1(reg, reg); -} - -static TCGv gen_get_sr(DisasContext *s) -{ - TCGv ccr; - TCGv sr; - - ccr = gen_get_ccr(s); - sr = tcg_temp_new(); - tcg_gen_andi_i32(sr, QREG_SR, 0xffe0); - tcg_gen_or_i32(sr, sr, ccr); - return sr; -} - -DISAS_INSN(strldsr) -{ - uint16_t ext; - uint32_t addr; - - addr = s->pc - 2; - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - if (ext != 0x46FC) { - gen_exception(s, addr, EXCP_UNSUPPORTED); - return; - } - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - if (IS_USER(s) || (ext & SR_S) == 0) { - gen_exception(s, addr, EXCP_PRIVILEGE); - return; - } - gen_push(s, gen_get_sr(s)); - gen_set_sr_im(s, ext, 0); -} - -DISAS_INSN(move_from_sr) -{ - TCGv reg; - TCGv sr; - - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - sr = gen_get_sr(s); - reg = DREG(insn, 0); - gen_partset_reg(OS_WORD, reg, sr); -} - -DISAS_INSN(move_to_sr) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - gen_set_sr(env, s, insn, 0); - gen_lookup_tb(s); -} - -DISAS_INSN(move_from_usp) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - tcg_gen_ld_i32(AREG(insn, 0), cpu_env, - offsetof(CPUM68KState, sp[M68K_USP])); -} - -DISAS_INSN(move_to_usp) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - tcg_gen_st_i32(AREG(insn, 0), cpu_env, - offsetof(CPUM68KState, sp[M68K_USP])); -} - -DISAS_INSN(halt) -{ - gen_exception(s, s->pc, EXCP_HALT_INSN); -} - -DISAS_INSN(stop) -{ - uint16_t ext; - - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - - gen_set_sr_im(s, ext, 0); - tcg_gen_movi_i32(cpu_halted, 1); - gen_exception(s, s->pc, EXCP_HLT); -} - -DISAS_INSN(rte) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - gen_exception(s, s->pc - 2, EXCP_RTE); -} - -DISAS_INSN(movec) -{ - uint16_t ext; - TCGv reg; - - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - - if (ext & 0x8000) { - reg = AREG(ext, 12); - } else { - reg = DREG(ext, 12); - } - gen_helper_movec(cpu_env, tcg_const_i32(ext & 0xfff), reg); - gen_lookup_tb(s); -} - -DISAS_INSN(intouch) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - /* ICache fetch. Implement as no-op. */ -} - -DISAS_INSN(cpushl) -{ - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - /* Cache push/invalidate. Implement as no-op. */ -} - -DISAS_INSN(wddata) -{ - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); -} - -DISAS_INSN(wdebug) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - - if (IS_USER(s)) { - gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); - return; - } - /* TODO: Implement wdebug. */ - cpu_abort(CPU(cpu), "WDEBUG not implemented"); -} - -DISAS_INSN(trap) -{ - gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); -} - -/* ??? FP exceptions are not implemented. Most exceptions are deferred until - immediately before the next FP instruction is executed. */ -DISAS_INSN(fpu) -{ - uint16_t ext; - int32_t offset; - int opmode; - TCGv_i64 src; - TCGv_i64 dest; - TCGv_i64 res; - TCGv tmp32; - int round; - int set_dest; - int opsize; - - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - opmode = ext & 0x7f; - switch ((ext >> 13) & 7) { - case 0: case 2: - break; - case 1: - goto undef; - case 3: /* fmove out */ - src = FREG(ext, 7); - tmp32 = tcg_temp_new_i32(); - /* fmove */ - /* ??? TODO: Proper behavior on overflow. */ - switch ((ext >> 10) & 7) { - case 0: - opsize = OS_LONG; - gen_helper_f64_to_i32(tmp32, cpu_env, src); - break; - case 1: - opsize = OS_SINGLE; - gen_helper_f64_to_f32(tmp32, cpu_env, src); - break; - case 4: - opsize = OS_WORD; - gen_helper_f64_to_i32(tmp32, cpu_env, src); - break; - case 5: /* OS_DOUBLE */ - tcg_gen_mov_i32(tmp32, AREG(insn, 0)); - switch ((insn >> 3) & 7) { - case 2: - case 3: - break; - case 4: - tcg_gen_addi_i32(tmp32, tmp32, -8); - break; - case 5: - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - tcg_gen_addi_i32(tmp32, tmp32, offset); - break; - default: - goto undef; - } - gen_store64(s, tmp32, src); - switch ((insn >> 3) & 7) { - case 3: - tcg_gen_addi_i32(tmp32, tmp32, 8); - tcg_gen_mov_i32(AREG(insn, 0), tmp32); - break; - case 4: - tcg_gen_mov_i32(AREG(insn, 0), tmp32); - break; - } - tcg_temp_free_i32(tmp32); - return; - case 6: - opsize = OS_BYTE; - gen_helper_f64_to_i32(tmp32, cpu_env, src); - break; - default: - goto undef; - } - DEST_EA(env, insn, opsize, tmp32, NULL); - tcg_temp_free_i32(tmp32); - return; - case 4: /* fmove to control register. */ - switch ((ext >> 10) & 7) { - case 4: /* FPCR */ - /* Not implemented. Ignore writes. */ - break; - case 1: /* FPIAR */ - case 2: /* FPSR */ - default: - cpu_abort(NULL, "Unimplemented: fmove to control %d", - (ext >> 10) & 7); - } - break; - case 5: /* fmove from control register. */ - switch ((ext >> 10) & 7) { - case 4: /* FPCR */ - /* Not implemented. Always return zero. */ - tmp32 = tcg_const_i32(0); - break; - case 1: /* FPIAR */ - case 2: /* FPSR */ - default: - cpu_abort(NULL, "Unimplemented: fmove from control %d", - (ext >> 10) & 7); - goto undef; - } - DEST_EA(env, insn, OS_LONG, tmp32, NULL); - break; - case 6: /* fmovem */ - case 7: - { - TCGv addr; - uint16_t mask; - int i; - if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) - goto undef; - tmp32 = gen_lea(env, s, insn, OS_LONG); - if (IS_NULL_QREG(tmp32)) { - gen_addr_fault(s); - return; - } - addr = tcg_temp_new_i32(); - tcg_gen_mov_i32(addr, tmp32); - mask = 0x80; - for (i = 0; i < 8; i++) { - if (ext & mask) { - dest = FREG(i, 0); - if (ext & (1 << 13)) { - /* store */ - tcg_gen_qemu_stf64(dest, addr, IS_USER(s)); - } else { - /* load */ - tcg_gen_qemu_ldf64(dest, addr, IS_USER(s)); - } - if (ext & (mask - 1)) - tcg_gen_addi_i32(addr, addr, 8); - } - mask >>= 1; - } - tcg_temp_free_i32(addr); - } - return; - } - if (ext & (1 << 14)) { - /* Source effective address. */ - switch ((ext >> 10) & 7) { - case 0: opsize = OS_LONG; break; - case 1: opsize = OS_SINGLE; break; - case 4: opsize = OS_WORD; break; - case 5: opsize = OS_DOUBLE; break; - case 6: opsize = OS_BYTE; break; - default: - goto undef; - } - if (opsize == OS_DOUBLE) { - tmp32 = tcg_temp_new_i32(); - tcg_gen_mov_i32(tmp32, AREG(insn, 0)); - switch ((insn >> 3) & 7) { - case 2: - case 3: - break; - case 4: - tcg_gen_addi_i32(tmp32, tmp32, -8); - break; - case 5: - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - tcg_gen_addi_i32(tmp32, tmp32, offset); - break; - case 7: - offset = cpu_ldsw_code(env, s->pc); - offset += s->pc - 2; - s->pc += 2; - tcg_gen_addi_i32(tmp32, tmp32, offset); - break; - default: - goto undef; - } - src = gen_load64(s, tmp32); - switch ((insn >> 3) & 7) { - case 3: - tcg_gen_addi_i32(tmp32, tmp32, 8); - tcg_gen_mov_i32(AREG(insn, 0), tmp32); - break; - case 4: - tcg_gen_mov_i32(AREG(insn, 0), tmp32); - break; - } - tcg_temp_free_i32(tmp32); - } else { - SRC_EA(env, tmp32, opsize, 1, NULL); - src = tcg_temp_new_i64(); - switch (opsize) { - case OS_LONG: - case OS_WORD: - case OS_BYTE: - gen_helper_i32_to_f64(src, cpu_env, tmp32); - break; - case OS_SINGLE: - gen_helper_f32_to_f64(src, cpu_env, tmp32); - break; - } - } - } else { - /* Source register. */ - src = FREG(ext, 10); - } - dest = FREG(ext, 7); - res = tcg_temp_new_i64(); - if (opmode != 0x3a) - tcg_gen_mov_f64(res, dest); - round = 1; - set_dest = 1; - switch (opmode) { - case 0: case 0x40: case 0x44: /* fmove */ - tcg_gen_mov_f64(res, src); - break; - case 1: /* fint */ - gen_helper_iround_f64(res, cpu_env, src); - round = 0; - break; - case 3: /* fintrz */ - gen_helper_itrunc_f64(res, cpu_env, src); - round = 0; - break; - case 4: case 0x41: case 0x45: /* fsqrt */ - gen_helper_sqrt_f64(res, cpu_env, src); - break; - case 0x18: case 0x58: case 0x5c: /* fabs */ - gen_helper_abs_f64(res, src); - break; - case 0x1a: case 0x5a: case 0x5e: /* fneg */ - gen_helper_chs_f64(res, src); - break; - case 0x20: case 0x60: case 0x64: /* fdiv */ - gen_helper_div_f64(res, cpu_env, res, src); - break; - case 0x22: case 0x62: case 0x66: /* fadd */ - gen_helper_add_f64(res, cpu_env, res, src); - break; - case 0x23: case 0x63: case 0x67: /* fmul */ - gen_helper_mul_f64(res, cpu_env, res, src); - break; - case 0x28: case 0x68: case 0x6c: /* fsub */ - gen_helper_sub_f64(res, cpu_env, res, src); - break; - case 0x38: /* fcmp */ - gen_helper_sub_cmp_f64(res, cpu_env, res, src); - set_dest = 0; - round = 0; - break; - case 0x3a: /* ftst */ - tcg_gen_mov_f64(res, src); - set_dest = 0; - round = 0; - break; - default: - goto undef; - } - if (ext & (1 << 14)) { - tcg_temp_free_i64(src); - } - if (round) { - if (opmode & 0x40) { - if ((opmode & 0x4) != 0) - round = 0; - } else if ((s->fpcr & M68K_FPCR_PREC) == 0) { - round = 0; - } - } - if (round) { - TCGv tmp = tcg_temp_new_i32(); - gen_helper_f64_to_f32(tmp, cpu_env, res); - gen_helper_f32_to_f64(res, cpu_env, tmp); - tcg_temp_free_i32(tmp); - } - tcg_gen_mov_f64(QREG_FP_RESULT, res); - if (set_dest) { - tcg_gen_mov_f64(dest, res); - } - tcg_temp_free_i64(res); - return; -undef: - /* FIXME: Is this right for offset addressing modes? */ - s->pc -= 2; - disas_undef_fpu(env, s, insn); -} - -DISAS_INSN(fbcc) -{ - uint32_t offset; - uint32_t addr; - TCGv flag; - TCGLabel *l1; - - addr = s->pc; - offset = cpu_ldsw_code(env, s->pc); - s->pc += 2; - if (insn & (1 << 6)) { - offset = (offset << 16) | cpu_lduw_code(env, s->pc); - s->pc += 2; - } - - l1 = gen_new_label(); - /* TODO: Raise BSUN exception. */ - flag = tcg_temp_new(); - gen_helper_compare_f64(flag, cpu_env, QREG_FP_RESULT); - /* Jump to l1 if condition is true. */ - switch (insn & 0xf) { - case 0: /* f */ - break; - case 1: /* eq (=0) */ - tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1); - break; - case 2: /* ogt (=1) */ - tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(1), l1); - break; - case 3: /* oge (=0 or =1) */ - tcg_gen_brcond_i32(TCG_COND_LEU, flag, tcg_const_i32(1), l1); - break; - case 4: /* olt (=-1) */ - tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(0), l1); - break; - case 5: /* ole (=-1 or =0) */ - tcg_gen_brcond_i32(TCG_COND_LE, flag, tcg_const_i32(0), l1); - break; - case 6: /* ogl (=-1 or =1) */ - tcg_gen_andi_i32(flag, flag, 1); - tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1); - break; - case 7: /* or (=2) */ - tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(2), l1); - break; - case 8: /* un (<2) */ - tcg_gen_brcond_i32(TCG_COND_LT, flag, tcg_const_i32(2), l1); - break; - case 9: /* ueq (=0 or =2) */ - tcg_gen_andi_i32(flag, flag, 1); - tcg_gen_brcond_i32(TCG_COND_EQ, flag, tcg_const_i32(0), l1); - break; - case 10: /* ugt (>0) */ - tcg_gen_brcond_i32(TCG_COND_GT, flag, tcg_const_i32(0), l1); - break; - case 11: /* uge (>=0) */ - tcg_gen_brcond_i32(TCG_COND_GE, flag, tcg_const_i32(0), l1); - break; - case 12: /* ult (=-1 or =2) */ - tcg_gen_brcond_i32(TCG_COND_GEU, flag, tcg_const_i32(2), l1); - break; - case 13: /* ule (!=1) */ - tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(1), l1); - break; - case 14: /* ne (!=0) */ - tcg_gen_brcond_i32(TCG_COND_NE, flag, tcg_const_i32(0), l1); - break; - case 15: /* t */ - tcg_gen_br(l1); - break; - } - gen_jmp_tb(s, 0, s->pc); - gen_set_label(l1); - gen_jmp_tb(s, 1, addr + offset); -} - -DISAS_INSN(frestore) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - - /* TODO: Implement frestore. */ - cpu_abort(CPU(cpu), "FRESTORE not implemented"); -} - -DISAS_INSN(fsave) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - - /* TODO: Implement fsave. */ - cpu_abort(CPU(cpu), "FSAVE not implemented"); -} - -static inline TCGv gen_mac_extract_word(DisasContext *s, TCGv val, int upper) -{ - TCGv tmp = tcg_temp_new(); - if (s->env->macsr & MACSR_FI) { - if (upper) - tcg_gen_andi_i32(tmp, val, 0xffff0000); - else - tcg_gen_shli_i32(tmp, val, 16); - } else if (s->env->macsr & MACSR_SU) { - if (upper) - tcg_gen_sari_i32(tmp, val, 16); - else - tcg_gen_ext16s_i32(tmp, val); - } else { - if (upper) - tcg_gen_shri_i32(tmp, val, 16); - else - tcg_gen_ext16u_i32(tmp, val); - } - return tmp; -} - -static void gen_mac_clear_flags(void) -{ - tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, - ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV)); -} - -DISAS_INSN(mac) -{ - TCGv rx; - TCGv ry; - uint16_t ext; - int acc; - TCGv tmp; - TCGv addr; - TCGv loadval; - int dual; - TCGv saved_flags; - - if (!s->done_mac) { - s->mactmp = tcg_temp_new_i64(); - s->done_mac = 1; - } - - ext = cpu_lduw_code(env, s->pc); - s->pc += 2; - - acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); - dual = ((insn & 0x30) != 0 && (ext & 3) != 0); - if (dual && !m68k_feature(s->env, M68K_FEATURE_CF_EMAC_B)) { - disas_undef(env, s, insn); - return; - } - if (insn & 0x30) { - /* MAC with load. */ - tmp = gen_lea(env, s, insn, OS_LONG); - addr = tcg_temp_new(); - tcg_gen_and_i32(addr, tmp, QREG_MAC_MASK); - /* Load the value now to ensure correct exception behavior. - Perform writeback after reading the MAC inputs. */ - loadval = gen_load(s, OS_LONG, addr, 0); - - acc ^= 1; - rx = (ext & 0x8000) ? AREG(ext, 12) : DREG(insn, 12); - ry = (ext & 8) ? AREG(ext, 0) : DREG(ext, 0); - } else { - loadval = addr = NULL_QREG; - rx = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); - ry = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); - } - - gen_mac_clear_flags(); -#if 0 - l1 = -1; - /* Disabled because conditional branches clobber temporary vars. */ - if ((s->env->macsr & MACSR_OMC) != 0 && !dual) { - /* Skip the multiply if we know we will ignore it. */ - l1 = gen_new_label(); - tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_MACSR, 1 << (acc + 8)); - gen_op_jmp_nz32(tmp, l1); - } -#endif - - if ((ext & 0x0800) == 0) { - /* Word. */ - rx = gen_mac_extract_word(s, rx, (ext & 0x80) != 0); - ry = gen_mac_extract_word(s, ry, (ext & 0x40) != 0); - } - if (s->env->macsr & MACSR_FI) { - gen_helper_macmulf(s->mactmp, cpu_env, rx, ry); - } else { - if (s->env->macsr & MACSR_SU) - gen_helper_macmuls(s->mactmp, cpu_env, rx, ry); - else - gen_helper_macmulu(s->mactmp, cpu_env, rx, ry); - switch ((ext >> 9) & 3) { - case 1: - tcg_gen_shli_i64(s->mactmp, s->mactmp, 1); - break; - case 3: - tcg_gen_shri_i64(s->mactmp, s->mactmp, 1); - break; - } - } - - if (dual) { - /* Save the overflow flag from the multiply. */ - saved_flags = tcg_temp_new(); - tcg_gen_mov_i32(saved_flags, QREG_MACSR); - } else { - saved_flags = NULL_QREG; - } - -#if 0 - /* Disabled because conditional branches clobber temporary vars. */ - if ((s->env->macsr & MACSR_OMC) != 0 && dual) { - /* Skip the accumulate if the value is already saturated. */ - l1 = gen_new_label(); - tmp = tcg_temp_new(); - gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc)); - gen_op_jmp_nz32(tmp, l1); - } -#endif - - if (insn & 0x100) - tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); - else - tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); - - if (s->env->macsr & MACSR_FI) - gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); - else if (s->env->macsr & MACSR_SU) - gen_helper_macsats(cpu_env, tcg_const_i32(acc)); - else - gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); - -#if 0 - /* Disabled because conditional branches clobber temporary vars. */ - if (l1 != -1) - gen_set_label(l1); -#endif - - if (dual) { - /* Dual accumulate variant. */ - acc = (ext >> 2) & 3; - /* Restore the overflow flag from the multiplier. */ - tcg_gen_mov_i32(QREG_MACSR, saved_flags); -#if 0 - /* Disabled because conditional branches clobber temporary vars. */ - if ((s->env->macsr & MACSR_OMC) != 0) { - /* Skip the accumulate if the value is already saturated. */ - l1 = gen_new_label(); - tmp = tcg_temp_new(); - gen_op_and32(tmp, QREG_MACSR, tcg_const_i32(MACSR_PAV0 << acc)); - gen_op_jmp_nz32(tmp, l1); - } -#endif - if (ext & 2) - tcg_gen_sub_i64(MACREG(acc), MACREG(acc), s->mactmp); - else - tcg_gen_add_i64(MACREG(acc), MACREG(acc), s->mactmp); - if (s->env->macsr & MACSR_FI) - gen_helper_macsatf(cpu_env, tcg_const_i32(acc)); - else if (s->env->macsr & MACSR_SU) - gen_helper_macsats(cpu_env, tcg_const_i32(acc)); - else - gen_helper_macsatu(cpu_env, tcg_const_i32(acc)); -#if 0 - /* Disabled because conditional branches clobber temporary vars. */ - if (l1 != -1) - gen_set_label(l1); -#endif - } - gen_helper_mac_set_flags(cpu_env, tcg_const_i32(acc)); - - if (insn & 0x30) { - TCGv rw; - rw = (insn & 0x40) ? AREG(insn, 9) : DREG(insn, 9); - tcg_gen_mov_i32(rw, loadval); - /* FIXME: Should address writeback happen with the masked or - unmasked value? */ - switch ((insn >> 3) & 7) { - case 3: /* Post-increment. */ - tcg_gen_addi_i32(AREG(insn, 0), addr, 4); - break; - case 4: /* Pre-decrement. */ - tcg_gen_mov_i32(AREG(insn, 0), addr); - } - } -} - -DISAS_INSN(from_mac) -{ - TCGv rx; - TCGv_i64 acc; - int accnum; - - rx = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); - accnum = (insn >> 9) & 3; - acc = MACREG(accnum); - if (s->env->macsr & MACSR_FI) { - gen_helper_get_macf(rx, cpu_env, acc); - } else if ((s->env->macsr & MACSR_OMC) == 0) { - tcg_gen_extrl_i64_i32(rx, acc); - } else if (s->env->macsr & MACSR_SU) { - gen_helper_get_macs(rx, acc); - } else { - gen_helper_get_macu(rx, acc); - } - if (insn & 0x40) { - tcg_gen_movi_i64(acc, 0); - tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); - } -} - -DISAS_INSN(move_mac) -{ - /* FIXME: This can be done without a helper. */ - int src; - TCGv dest; - src = insn & 3; - dest = tcg_const_i32((insn >> 9) & 3); - gen_helper_mac_move(cpu_env, dest, tcg_const_i32(src)); - gen_mac_clear_flags(); - gen_helper_mac_set_flags(cpu_env, dest); -} - -DISAS_INSN(from_macsr) -{ - TCGv reg; - - reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); - tcg_gen_mov_i32(reg, QREG_MACSR); -} - -DISAS_INSN(from_mask) -{ - TCGv reg; - reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); - tcg_gen_mov_i32(reg, QREG_MAC_MASK); -} - -DISAS_INSN(from_mext) -{ - TCGv reg; - TCGv acc; - reg = (insn & 8) ? AREG(insn, 0) : DREG(insn, 0); - acc = tcg_const_i32((insn & 0x400) ? 2 : 0); - if (s->env->macsr & MACSR_FI) - gen_helper_get_mac_extf(reg, cpu_env, acc); - else - gen_helper_get_mac_exti(reg, cpu_env, acc); -} - -DISAS_INSN(macsr_to_ccr) -{ - tcg_gen_movi_i32(QREG_CC_X, 0); - tcg_gen_andi_i32(QREG_CC_DEST, QREG_MACSR, 0xf); - s->cc_op = CC_OP_FLAGS; -} - -DISAS_INSN(to_mac) -{ - TCGv_i64 acc; - TCGv val; - int accnum; - accnum = (insn >> 9) & 3; - acc = MACREG(accnum); - SRC_EA(env, val, OS_LONG, 0, NULL); - if (s->env->macsr & MACSR_FI) { - tcg_gen_ext_i32_i64(acc, val); - tcg_gen_shli_i64(acc, acc, 8); - } else if (s->env->macsr & MACSR_SU) { - tcg_gen_ext_i32_i64(acc, val); - } else { - tcg_gen_extu_i32_i64(acc, val); - } - tcg_gen_andi_i32(QREG_MACSR, QREG_MACSR, ~(MACSR_PAV0 << accnum)); - gen_mac_clear_flags(); - gen_helper_mac_set_flags(cpu_env, tcg_const_i32(accnum)); -} - -DISAS_INSN(to_macsr) -{ - TCGv val; - SRC_EA(env, val, OS_LONG, 0, NULL); - gen_helper_set_macsr(cpu_env, val); - gen_lookup_tb(s); -} - -DISAS_INSN(to_mask) -{ - TCGv val; - SRC_EA(env, val, OS_LONG, 0, NULL); - tcg_gen_ori_i32(QREG_MAC_MASK, val, 0xffff0000); -} - -DISAS_INSN(to_mext) -{ - TCGv val; - TCGv acc; - SRC_EA(env, val, OS_LONG, 0, NULL); - acc = tcg_const_i32((insn & 0x400) ? 2 : 0); - if (s->env->macsr & MACSR_FI) - gen_helper_set_mac_extf(cpu_env, val, acc); - else if (s->env->macsr & MACSR_SU) - gen_helper_set_mac_exts(cpu_env, val, acc); - else - gen_helper_set_mac_extu(cpu_env, val, acc); -} - -static disas_proc opcode_table[65536]; - -static void -register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) -{ - int i; - int from; - int to; - - /* Sanity check. All set bits must be included in the mask. */ - if (opcode & ~mask) { - fprintf(stderr, - "qemu internal error: bogus opcode definition %04x/%04x\n", - opcode, mask); - abort(); - } - /* This could probably be cleverer. For now just optimize the case where - the top bits are known. */ - /* Find the first zero bit in the mask. */ - i = 0x8000; - while ((i & mask) != 0) - i >>= 1; - /* Iterate over all combinations of this and lower bits. */ - if (i == 0) - i = 1; - else - i <<= 1; - from = opcode & ~(i - 1); - to = from + i; - for (i = from; i < to; i++) { - if ((i & mask) == opcode) - opcode_table[i] = proc; - } -} - -/* Register m68k opcode handlers. Order is important. - Later insn override earlier ones. */ -void register_m68k_insns (CPUM68KState *env) -{ -#define INSN(name, opcode, mask, feature) do { \ - if (m68k_feature(env, M68K_FEATURE_##feature)) \ - register_opcode(disas_##name, 0x##opcode, 0x##mask); \ - } while(0) - INSN(undef, 0000, 0000, CF_ISA_A); - INSN(arith_im, 0080, fff8, CF_ISA_A); - INSN(bitrev, 00c0, fff8, CF_ISA_APLUSC); - INSN(bitop_reg, 0100, f1c0, CF_ISA_A); - INSN(bitop_reg, 0140, f1c0, CF_ISA_A); - INSN(bitop_reg, 0180, f1c0, CF_ISA_A); - INSN(bitop_reg, 01c0, f1c0, CF_ISA_A); - INSN(arith_im, 0280, fff8, CF_ISA_A); - INSN(byterev, 02c0, fff8, CF_ISA_APLUSC); - INSN(arith_im, 0480, fff8, CF_ISA_A); - INSN(ff1, 04c0, fff8, CF_ISA_APLUSC); - INSN(arith_im, 0680, fff8, CF_ISA_A); - INSN(bitop_im, 0800, ffc0, CF_ISA_A); - INSN(bitop_im, 0840, ffc0, CF_ISA_A); - INSN(bitop_im, 0880, ffc0, CF_ISA_A); - INSN(bitop_im, 08c0, ffc0, CF_ISA_A); - INSN(arith_im, 0a80, fff8, CF_ISA_A); - INSN(arith_im, 0c00, ff38, CF_ISA_A); - INSN(move, 1000, f000, CF_ISA_A); - INSN(move, 2000, f000, CF_ISA_A); - INSN(move, 3000, f000, CF_ISA_A); - INSN(strldsr, 40e7, ffff, CF_ISA_APLUSC); - INSN(negx, 4080, fff8, CF_ISA_A); - INSN(move_from_sr, 40c0, fff8, CF_ISA_A); - INSN(lea, 41c0, f1c0, CF_ISA_A); - INSN(clr, 4200, ff00, CF_ISA_A); - INSN(undef, 42c0, ffc0, CF_ISA_A); - INSN(move_from_ccr, 42c0, fff8, CF_ISA_A); - INSN(neg, 4480, fff8, CF_ISA_A); - INSN(move_to_ccr, 44c0, ffc0, CF_ISA_A); - INSN(not, 4680, fff8, CF_ISA_A); - INSN(move_to_sr, 46c0, ffc0, CF_ISA_A); - INSN(pea, 4840, ffc0, CF_ISA_A); - INSN(swap, 4840, fff8, CF_ISA_A); - INSN(movem, 48c0, fbc0, CF_ISA_A); - INSN(ext, 4880, fff8, CF_ISA_A); - INSN(ext, 48c0, fff8, CF_ISA_A); - INSN(ext, 49c0, fff8, CF_ISA_A); - INSN(tst, 4a00, ff00, CF_ISA_A); - INSN(tas, 4ac0, ffc0, CF_ISA_B); - INSN(halt, 4ac8, ffff, CF_ISA_A); - INSN(pulse, 4acc, ffff, CF_ISA_A); - INSN(illegal, 4afc, ffff, CF_ISA_A); - INSN(mull, 4c00, ffc0, CF_ISA_A); - INSN(divl, 4c40, ffc0, CF_ISA_A); - INSN(sats, 4c80, fff8, CF_ISA_B); - INSN(trap, 4e40, fff0, CF_ISA_A); - INSN(link, 4e50, fff8, CF_ISA_A); - INSN(unlk, 4e58, fff8, CF_ISA_A); - INSN(move_to_usp, 4e60, fff8, USP); - INSN(move_from_usp, 4e68, fff8, USP); - INSN(nop, 4e71, ffff, CF_ISA_A); - INSN(stop, 4e72, ffff, CF_ISA_A); - INSN(rte, 4e73, ffff, CF_ISA_A); - INSN(rts, 4e75, ffff, CF_ISA_A); - INSN(movec, 4e7b, ffff, CF_ISA_A); - INSN(jump, 4e80, ffc0, CF_ISA_A); - INSN(jump, 4ec0, ffc0, CF_ISA_A); - INSN(addsubq, 5180, f1c0, CF_ISA_A); - INSN(scc, 50c0, f0f8, CF_ISA_A); - INSN(addsubq, 5080, f1c0, CF_ISA_A); - INSN(tpf, 51f8, fff8, CF_ISA_A); - - /* Branch instructions. */ - INSN(branch, 6000, f000, CF_ISA_A); - /* Disable long branch instructions, then add back the ones we want. */ - INSN(undef, 60ff, f0ff, CF_ISA_A); /* All long branches. */ - INSN(branch, 60ff, f0ff, CF_ISA_B); - INSN(undef, 60ff, ffff, CF_ISA_B); /* bra.l */ - INSN(branch, 60ff, ffff, BRAL); - - INSN(moveq, 7000, f100, CF_ISA_A); - INSN(mvzs, 7100, f100, CF_ISA_B); - INSN(or, 8000, f000, CF_ISA_A); - INSN(divw, 80c0, f0c0, CF_ISA_A); - INSN(addsub, 9000, f000, CF_ISA_A); - INSN(subx, 9180, f1f8, CF_ISA_A); - INSN(suba, 91c0, f1c0, CF_ISA_A); - - INSN(undef_mac, a000, f000, CF_ISA_A); - INSN(mac, a000, f100, CF_EMAC); - INSN(from_mac, a180, f9b0, CF_EMAC); - INSN(move_mac, a110, f9fc, CF_EMAC); - INSN(from_macsr,a980, f9f0, CF_EMAC); - INSN(from_mask, ad80, fff0, CF_EMAC); - INSN(from_mext, ab80, fbf0, CF_EMAC); - INSN(macsr_to_ccr, a9c0, ffff, CF_EMAC); - INSN(to_mac, a100, f9c0, CF_EMAC); - INSN(to_macsr, a900, ffc0, CF_EMAC); - INSN(to_mext, ab00, fbc0, CF_EMAC); - INSN(to_mask, ad00, ffc0, CF_EMAC); - - INSN(mov3q, a140, f1c0, CF_ISA_B); - INSN(cmp, b000, f1c0, CF_ISA_B); /* cmp.b */ - INSN(cmp, b040, f1c0, CF_ISA_B); /* cmp.w */ - INSN(cmpa, b0c0, f1c0, CF_ISA_B); /* cmpa.w */ - INSN(cmp, b080, f1c0, CF_ISA_A); - INSN(cmpa, b1c0, f1c0, CF_ISA_A); - INSN(eor, b180, f1c0, CF_ISA_A); - INSN(and, c000, f000, CF_ISA_A); - INSN(mulw, c0c0, f0c0, CF_ISA_A); - INSN(addsub, d000, f000, CF_ISA_A); - INSN(addx, d180, f1f8, CF_ISA_A); - INSN(adda, d1c0, f1c0, CF_ISA_A); - INSN(shift_im, e080, f0f0, CF_ISA_A); - INSN(shift_reg, e0a0, f0f0, CF_ISA_A); - INSN(undef_fpu, f000, f000, CF_ISA_A); - INSN(fpu, f200, ffc0, CF_FPU); - INSN(fbcc, f280, ffc0, CF_FPU); - INSN(frestore, f340, ffc0, CF_FPU); - INSN(fsave, f340, ffc0, CF_FPU); - INSN(intouch, f340, ffc0, CF_ISA_A); - INSN(cpushl, f428, ff38, CF_ISA_A); - INSN(wddata, fb00, ff00, CF_ISA_A); - INSN(wdebug, fbc0, ffc0, CF_ISA_A); -#undef INSN -} - -/* ??? Some of this implementation is not exception safe. We should always - write back the result to memory before setting the condition codes. */ -static void disas_m68k_insn(CPUM68KState * env, DisasContext *s) -{ - uint16_t insn; - - insn = cpu_lduw_code(env, s->pc); - s->pc += 2; - - opcode_table[insn](env, s, insn); -} - -/* generate intermediate code for basic block 'tb'. */ -void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb) -{ - M68kCPU *cpu = m68k_env_get_cpu(env); - CPUState *cs = CPU(cpu); - DisasContext dc1, *dc = &dc1; - target_ulong pc_start; - int pc_offset; - int num_insns; - int max_insns; - - /* generate intermediate code */ - pc_start = tb->pc; - - dc->tb = tb; - - dc->env = env; - dc->is_jmp = DISAS_NEXT; - dc->pc = pc_start; - dc->cc_op = CC_OP_DYNAMIC; - dc->singlestep_enabled = cs->singlestep_enabled; - dc->fpcr = env->fpcr; - dc->user = (env->sr & SR_S) == 0; - dc->done_mac = 0; - num_insns = 0; - max_insns = tb->cflags & CF_COUNT_MASK; - if (max_insns == 0) { - max_insns = CF_COUNT_MASK; - } - if (max_insns > TCG_MAX_INSNS) { - max_insns = TCG_MAX_INSNS; - } - - gen_tb_start(tb); - do { - pc_offset = dc->pc - pc_start; - gen_throws_exception = NULL; - tcg_gen_insn_start(dc->pc); - num_insns++; - - if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) { - gen_exception(dc, dc->pc, EXCP_DEBUG); - dc->is_jmp = DISAS_JUMP; - /* The address covered by the breakpoint must be included in - [tb->pc, tb->pc + tb->size) in order to for it to be - properly cleared -- thus we increment the PC here so that - the logic setting tb->size below does the right thing. */ - dc->pc += 2; - break; - } - - if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) { - gen_io_start(); - } - - dc->insn_pc = dc->pc; - disas_m68k_insn(env, dc); - } while (!dc->is_jmp && !tcg_op_buf_full() && - !cs->singlestep_enabled && - !singlestep && - (pc_offset) < (TARGET_PAGE_SIZE - 32) && - num_insns < max_insns); - - if (tb->cflags & CF_LAST_IO) - gen_io_end(); - if (unlikely(cs->singlestep_enabled)) { - /* Make sure the pc is updated, and raise a debug exception. */ - if (!dc->is_jmp) { - gen_flush_cc_op(dc); - tcg_gen_movi_i32(QREG_PC, dc->pc); - } - gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG)); - } else { - switch(dc->is_jmp) { - case DISAS_NEXT: - gen_flush_cc_op(dc); - gen_jmp_tb(dc, 0, dc->pc); - break; - default: - case DISAS_JUMP: - case DISAS_UPDATE: - gen_flush_cc_op(dc); - /* indicate that the hash table must be used to find the next TB */ - tcg_gen_exit_tb(0); - break; - case DISAS_TB_JUMP: - /* nothing more to generate */ - break; - } - } - gen_tb_end(tb, num_insns); - -#ifdef DEBUG_DISAS - if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { - qemu_log("----------------\n"); - qemu_log("IN: %s\n", lookup_symbol(pc_start)); - log_target_disas(cs, pc_start, dc->pc - pc_start, 0); - qemu_log("\n"); - } -#endif - tb->size = dc->pc - pc_start; - tb->icount = num_insns; -} - -void m68k_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, - int flags) -{ - M68kCPU *cpu = M68K_CPU(cs); - CPUM68KState *env = &cpu->env; - int i; - uint16_t sr; - CPU_DoubleU u; - for (i = 0; i < 8; i++) - { - u.d = env->fregs[i]; - cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n", - i, env->dregs[i], i, env->aregs[i], - i, u.l.upper, u.l.lower, *(double *)&u.d); - } - cpu_fprintf (f, "PC = %08x ", env->pc); - sr = env->sr; - cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', - (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', - (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); - cpu_fprintf (f, "FPRESULT = %12g\n", *(double *)&env->fp_result); -} - -void restore_state_to_opc(CPUM68KState *env, TranslationBlock *tb, - target_ulong *data) -{ - env->pc = data[0]; -} |