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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/target-ppc/excp_helper.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/target-ppc/excp_helper.c')
-rw-r--r--qemu/target-ppc/excp_helper.c1058
1 files changed, 1058 insertions, 0 deletions
diff --git a/qemu/target-ppc/excp_helper.c b/qemu/target-ppc/excp_helper.c
new file mode 100644
index 000000000..b80347506
--- /dev/null
+++ b/qemu/target-ppc/excp_helper.c
@@ -0,0 +1,1058 @@
+/*
+ * PowerPC exception emulation helpers for QEMU.
+ *
+ * Copyright (c) 2003-2007 Jocelyn Mayer
+ *
+ * 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 "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
+
+#include "helper_regs.h"
+
+//#define DEBUG_OP
+//#define DEBUG_EXCEPTIONS
+
+#ifdef DEBUG_EXCEPTIONS
+# define LOG_EXCP(...) qemu_log(__VA_ARGS__)
+#else
+# define LOG_EXCP(...) do { } while (0)
+#endif
+
+/*****************************************************************************/
+/* PowerPC Hypercall emulation */
+
+void (*cpu_ppc_hypercall)(PowerPCCPU *);
+
+/*****************************************************************************/
+/* Exception processing */
+#if defined(CONFIG_USER_ONLY)
+void ppc_cpu_do_interrupt(CPUState *cs)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+
+ cs->exception_index = POWERPC_EXCP_NONE;
+ env->error_code = 0;
+}
+
+static void ppc_hw_interrupt(CPUPPCState *env)
+{
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+
+ cs->exception_index = POWERPC_EXCP_NONE;
+ env->error_code = 0;
+}
+#else /* defined(CONFIG_USER_ONLY) */
+static inline void dump_syscall(CPUPPCState *env)
+{
+ qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64 " r3=%016" PRIx64
+ " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
+ " nip=" TARGET_FMT_lx "\n",
+ ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
+ ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
+ ppc_dump_gpr(env, 6), env->nip);
+}
+
+/* Note that this function should be greatly optimized
+ * when called with a constant excp, from ppc_hw_interrupt
+ */
+static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
+{
+ CPUState *cs = CPU(cpu);
+ CPUPPCState *env = &cpu->env;
+ target_ulong msr, new_msr, vector;
+ int srr0, srr1, asrr0, asrr1;
+ int lpes0, lpes1, lev;
+
+ if (0) {
+ /* XXX: find a suitable condition to enable the hypervisor mode */
+ lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
+ lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
+ } else {
+ /* Those values ensure we won't enter the hypervisor mode */
+ lpes0 = 0;
+ lpes1 = 1;
+ }
+
+ qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
+ " => %08x (%02x)\n", env->nip, excp, env->error_code);
+
+ /* new srr1 value excluding must-be-zero bits */
+ if (excp_model == POWERPC_EXCP_BOOKE) {
+ msr = env->msr;
+ } else {
+ msr = env->msr & ~0x783f0000ULL;
+ }
+
+ /* new interrupt handler msr */
+ new_msr = env->msr & ((target_ulong)1 << MSR_ME);
+
+ /* target registers */
+ srr0 = SPR_SRR0;
+ srr1 = SPR_SRR1;
+ asrr0 = -1;
+ asrr1 = -1;
+
+ switch (excp) {
+ case POWERPC_EXCP_NONE:
+ /* Should never happen */
+ return;
+ case POWERPC_EXCP_CRITICAL: /* Critical input */
+ switch (excp_model) {
+ case POWERPC_EXCP_40x:
+ srr0 = SPR_40x_SRR2;
+ srr1 = SPR_40x_SRR3;
+ break;
+ case POWERPC_EXCP_BOOKE:
+ srr0 = SPR_BOOKE_CSRR0;
+ srr1 = SPR_BOOKE_CSRR1;
+ break;
+ case POWERPC_EXCP_G2:
+ break;
+ default:
+ goto excp_invalid;
+ }
+ goto store_next;
+ case POWERPC_EXCP_MCHECK: /* Machine check exception */
+ if (msr_me == 0) {
+ /* Machine check exception is not enabled.
+ * Enter checkstop state.
+ */
+ if (qemu_log_enabled()) {
+ qemu_log("Machine check while not allowed. "
+ "Entering checkstop state\n");
+ } else {
+ fprintf(stderr, "Machine check while not allowed. "
+ "Entering checkstop state\n");
+ }
+ cs->halted = 1;
+ cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
+ }
+ if (0) {
+ /* XXX: find a suitable condition to enable the hypervisor mode */
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+
+ /* machine check exceptions don't have ME set */
+ new_msr &= ~((target_ulong)1 << MSR_ME);
+
+ /* XXX: should also have something loaded in DAR / DSISR */
+ switch (excp_model) {
+ case POWERPC_EXCP_40x:
+ srr0 = SPR_40x_SRR2;
+ srr1 = SPR_40x_SRR3;
+ break;
+ case POWERPC_EXCP_BOOKE:
+ /* FIXME: choose one or the other based on CPU type */
+ srr0 = SPR_BOOKE_MCSRR0;
+ srr1 = SPR_BOOKE_MCSRR1;
+ asrr0 = SPR_BOOKE_CSRR0;
+ asrr1 = SPR_BOOKE_CSRR1;
+ break;
+ default:
+ break;
+ }
+ goto store_next;
+ case POWERPC_EXCP_DSI: /* Data storage exception */
+ LOG_EXCP("DSI exception: DSISR=" TARGET_FMT_lx" DAR=" TARGET_FMT_lx
+ "\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_ISI: /* Instruction storage exception */
+ LOG_EXCP("ISI exception: msr=" TARGET_FMT_lx ", nip=" TARGET_FMT_lx
+ "\n", msr, env->nip);
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ msr |= env->error_code;
+ goto store_next;
+ case POWERPC_EXCP_EXTERNAL: /* External input */
+ cs = CPU(cpu);
+
+ if (lpes0 == 1) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ if (env->mpic_proxy) {
+ /* IACK the IRQ on delivery */
+ env->spr[SPR_BOOKE_EPR] = ldl_phys(cs->as, env->mpic_iack);
+ }
+ goto store_next;
+ case POWERPC_EXCP_ALIGN: /* Alignment exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ /* XXX: this is false */
+ /* Get rS/rD and rA from faulting opcode */
+ env->spr[SPR_DSISR] |= (cpu_ldl_code(env, (env->nip - 4))
+ & 0x03FF0000) >> 16;
+ goto store_current;
+ case POWERPC_EXCP_PROGRAM: /* Program exception */
+ switch (env->error_code & ~0xF) {
+ case POWERPC_EXCP_FP:
+ if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
+ LOG_EXCP("Ignore floating point exception\n");
+ cs->exception_index = POWERPC_EXCP_NONE;
+ env->error_code = 0;
+ return;
+ }
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ msr |= 0x00100000;
+ if (msr_fe0 == msr_fe1) {
+ goto store_next;
+ }
+ msr |= 0x00010000;
+ break;
+ case POWERPC_EXCP_INVAL:
+ LOG_EXCP("Invalid instruction at " TARGET_FMT_lx "\n", env->nip);
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ msr |= 0x00080000;
+ env->spr[SPR_BOOKE_ESR] = ESR_PIL;
+ break;
+ case POWERPC_EXCP_PRIV:
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ msr |= 0x00040000;
+ env->spr[SPR_BOOKE_ESR] = ESR_PPR;
+ break;
+ case POWERPC_EXCP_TRAP:
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ msr |= 0x00020000;
+ env->spr[SPR_BOOKE_ESR] = ESR_PTR;
+ break;
+ default:
+ /* Should never occur */
+ cpu_abort(cs, "Invalid program exception %d. Aborting\n",
+ env->error_code);
+ break;
+ }
+ goto store_current;
+ case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_current;
+ case POWERPC_EXCP_SYSCALL: /* System call exception */
+ dump_syscall(env);
+ lev = env->error_code;
+ if ((lev == 1) && cpu_ppc_hypercall) {
+ cpu_ppc_hypercall(cpu);
+ return;
+ }
+ if (lev == 1 || (lpes0 == 0 && lpes1 == 0)) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
+ goto store_current;
+ case POWERPC_EXCP_DECR: /* Decrementer exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
+ /* FIT on 4xx */
+ LOG_EXCP("FIT exception\n");
+ goto store_next;
+ case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
+ LOG_EXCP("WDT exception\n");
+ switch (excp_model) {
+ case POWERPC_EXCP_BOOKE:
+ srr0 = SPR_BOOKE_CSRR0;
+ srr1 = SPR_BOOKE_CSRR1;
+ break;
+ default:
+ break;
+ }
+ goto store_next;
+ case POWERPC_EXCP_DTLB: /* Data TLB error */
+ goto store_next;
+ case POWERPC_EXCP_ITLB: /* Instruction TLB error */
+ goto store_next;
+ case POWERPC_EXCP_DEBUG: /* Debug interrupt */
+ switch (excp_model) {
+ case POWERPC_EXCP_BOOKE:
+ /* FIXME: choose one or the other based on CPU type */
+ srr0 = SPR_BOOKE_DSRR0;
+ srr1 = SPR_BOOKE_DSRR1;
+ asrr0 = SPR_BOOKE_CSRR0;
+ asrr1 = SPR_BOOKE_CSRR1;
+ break;
+ default:
+ break;
+ }
+ /* XXX: TODO */
+ cpu_abort(cs, "Debug exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
+ env->spr[SPR_BOOKE_ESR] = ESR_SPV;
+ goto store_current;
+ case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
+ /* XXX: TODO */
+ cpu_abort(cs, "Embedded floating point data exception "
+ "is not implemented yet !\n");
+ env->spr[SPR_BOOKE_ESR] = ESR_SPV;
+ goto store_next;
+ case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
+ /* XXX: TODO */
+ cpu_abort(cs, "Embedded floating point round exception "
+ "is not implemented yet !\n");
+ env->spr[SPR_BOOKE_ESR] = ESR_SPV;
+ goto store_next;
+ case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
+ /* XXX: TODO */
+ cpu_abort(cs,
+ "Performance counter exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
+ goto store_next;
+ case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
+ srr0 = SPR_BOOKE_CSRR0;
+ srr1 = SPR_BOOKE_CSRR1;
+ goto store_next;
+ case POWERPC_EXCP_RESET: /* System reset exception */
+ if (msr_pow) {
+ /* indicate that we resumed from power save mode */
+ msr |= 0x10000;
+ } else {
+ new_msr &= ~((target_ulong)1 << MSR_ME);
+ }
+
+ if (0) {
+ /* XXX: find a suitable condition to enable the hypervisor mode */
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_DSEG: /* Data segment exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_ISEG: /* Instruction segment exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
+ srr0 = SPR_HSRR0;
+ srr1 = SPR_HSRR1;
+ new_msr |= (target_ulong)MSR_HVB;
+ new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
+ goto store_next;
+ case POWERPC_EXCP_TRACE: /* Trace exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_next;
+ case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
+ srr0 = SPR_HSRR0;
+ srr1 = SPR_HSRR1;
+ new_msr |= (target_ulong)MSR_HVB;
+ new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
+ goto store_next;
+ case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
+ srr0 = SPR_HSRR0;
+ srr1 = SPR_HSRR1;
+ new_msr |= (target_ulong)MSR_HVB;
+ new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
+ goto store_next;
+ case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
+ srr0 = SPR_HSRR0;
+ srr1 = SPR_HSRR1;
+ new_msr |= (target_ulong)MSR_HVB;
+ new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
+ goto store_next;
+ case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
+ srr0 = SPR_HSRR0;
+ srr1 = SPR_HSRR1;
+ new_msr |= (target_ulong)MSR_HVB;
+ new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
+ goto store_next;
+ case POWERPC_EXCP_VPU: /* Vector unavailable exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_current;
+ case POWERPC_EXCP_VSXU: /* VSX unavailable exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_current;
+ case POWERPC_EXCP_FU: /* Facility unavailable exception */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ goto store_current;
+ case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
+ LOG_EXCP("PIT exception\n");
+ goto store_next;
+ case POWERPC_EXCP_IO: /* IO error exception */
+ /* XXX: TODO */
+ cpu_abort(cs, "601 IO error exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_RUNM: /* Run mode exception */
+ /* XXX: TODO */
+ cpu_abort(cs, "601 run mode exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_EMUL: /* Emulation trap exception */
+ /* XXX: TODO */
+ cpu_abort(cs, "602 emulation trap exception "
+ "is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
+ if (lpes1 == 0) { /* XXX: check this */
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ switch (excp_model) {
+ case POWERPC_EXCP_602:
+ case POWERPC_EXCP_603:
+ case POWERPC_EXCP_603E:
+ case POWERPC_EXCP_G2:
+ goto tlb_miss_tgpr;
+ case POWERPC_EXCP_7x5:
+ goto tlb_miss;
+ case POWERPC_EXCP_74xx:
+ goto tlb_miss_74xx;
+ default:
+ cpu_abort(cs, "Invalid instruction TLB miss exception\n");
+ break;
+ }
+ break;
+ case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
+ if (lpes1 == 0) { /* XXX: check this */
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ switch (excp_model) {
+ case POWERPC_EXCP_602:
+ case POWERPC_EXCP_603:
+ case POWERPC_EXCP_603E:
+ case POWERPC_EXCP_G2:
+ goto tlb_miss_tgpr;
+ case POWERPC_EXCP_7x5:
+ goto tlb_miss;
+ case POWERPC_EXCP_74xx:
+ goto tlb_miss_74xx;
+ default:
+ cpu_abort(cs, "Invalid data load TLB miss exception\n");
+ break;
+ }
+ break;
+ case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
+ if (lpes1 == 0) { /* XXX: check this */
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ switch (excp_model) {
+ case POWERPC_EXCP_602:
+ case POWERPC_EXCP_603:
+ case POWERPC_EXCP_603E:
+ case POWERPC_EXCP_G2:
+ tlb_miss_tgpr:
+ /* Swap temporary saved registers with GPRs */
+ if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
+ new_msr |= (target_ulong)1 << MSR_TGPR;
+ hreg_swap_gpr_tgpr(env);
+ }
+ goto tlb_miss;
+ case POWERPC_EXCP_7x5:
+ tlb_miss:
+#if defined(DEBUG_SOFTWARE_TLB)
+ if (qemu_log_enabled()) {
+ const char *es;
+ target_ulong *miss, *cmp;
+ int en;
+
+ if (excp == POWERPC_EXCP_IFTLB) {
+ es = "I";
+ en = 'I';
+ miss = &env->spr[SPR_IMISS];
+ cmp = &env->spr[SPR_ICMP];
+ } else {
+ if (excp == POWERPC_EXCP_DLTLB) {
+ es = "DL";
+ } else {
+ es = "DS";
+ }
+ en = 'D';
+ miss = &env->spr[SPR_DMISS];
+ cmp = &env->spr[SPR_DCMP];
+ }
+ qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
+ TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
+ TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
+ env->spr[SPR_HASH1], env->spr[SPR_HASH2],
+ env->error_code);
+ }
+#endif
+ msr |= env->crf[0] << 28;
+ msr |= env->error_code; /* key, D/I, S/L bits */
+ /* Set way using a LRU mechanism */
+ msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
+ break;
+ case POWERPC_EXCP_74xx:
+ tlb_miss_74xx:
+#if defined(DEBUG_SOFTWARE_TLB)
+ if (qemu_log_enabled()) {
+ const char *es;
+ target_ulong *miss, *cmp;
+ int en;
+
+ if (excp == POWERPC_EXCP_IFTLB) {
+ es = "I";
+ en = 'I';
+ miss = &env->spr[SPR_TLBMISS];
+ cmp = &env->spr[SPR_PTEHI];
+ } else {
+ if (excp == POWERPC_EXCP_DLTLB) {
+ es = "DL";
+ } else {
+ es = "DS";
+ }
+ en = 'D';
+ miss = &env->spr[SPR_TLBMISS];
+ cmp = &env->spr[SPR_PTEHI];
+ }
+ qemu_log("74xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
+ TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
+ env->error_code);
+ }
+#endif
+ msr |= env->error_code; /* key bit */
+ break;
+ default:
+ cpu_abort(cs, "Invalid data store TLB miss exception\n");
+ break;
+ }
+ goto store_next;
+ case POWERPC_EXCP_FPA: /* Floating-point assist exception */
+ /* XXX: TODO */
+ cpu_abort(cs, "Floating point assist exception "
+ "is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_DABR: /* Data address breakpoint */
+ /* XXX: TODO */
+ cpu_abort(cs, "DABR exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
+ /* XXX: TODO */
+ cpu_abort(cs, "IABR exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_SMI: /* System management interrupt */
+ /* XXX: TODO */
+ cpu_abort(cs, "SMI exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_THERM: /* Thermal interrupt */
+ /* XXX: TODO */
+ cpu_abort(cs, "Thermal management exception "
+ "is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
+ if (lpes1 == 0) {
+ new_msr |= (target_ulong)MSR_HVB;
+ }
+ /* XXX: TODO */
+ cpu_abort(cs,
+ "Performance counter exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_VPUA: /* Vector assist exception */
+ /* XXX: TODO */
+ cpu_abort(cs, "VPU assist exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_SOFTP: /* Soft patch exception */
+ /* XXX: TODO */
+ cpu_abort(cs,
+ "970 soft-patch exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_MAINT: /* Maintenance exception */
+ /* XXX: TODO */
+ cpu_abort(cs,
+ "970 maintenance exception is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
+ /* XXX: TODO */
+ cpu_abort(cs, "Maskable external exception "
+ "is not implemented yet !\n");
+ goto store_next;
+ case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
+ /* XXX: TODO */
+ cpu_abort(cs, "Non maskable external exception "
+ "is not implemented yet !\n");
+ goto store_next;
+ default:
+ excp_invalid:
+ cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
+ break;
+ store_current:
+ /* save current instruction location */
+ env->spr[srr0] = env->nip - 4;
+ break;
+ store_next:
+ /* save next instruction location */
+ env->spr[srr0] = env->nip;
+ break;
+ }
+ /* Save MSR */
+ env->spr[srr1] = msr;
+ /* If any alternate SRR register are defined, duplicate saved values */
+ if (asrr0 != -1) {
+ env->spr[asrr0] = env->spr[srr0];
+ }
+ if (asrr1 != -1) {
+ env->spr[asrr1] = env->spr[srr1];
+ }
+
+ if (env->spr[SPR_LPCR] & LPCR_AIL) {
+ new_msr |= (1 << MSR_IR) | (1 << MSR_DR);
+ } else if (msr & ((1 << MSR_IR) | (1 << MSR_DR))) {
+ /* If we disactivated any translation, flush TLBs */
+ tlb_flush(cs, 1);
+ }
+
+#ifdef TARGET_PPC64
+ if (excp_model == POWERPC_EXCP_POWER7) {
+ if (env->spr[SPR_LPCR] & LPCR_ILE) {
+ new_msr |= (target_ulong)1 << MSR_LE;
+ }
+ } else if (msr_ile) {
+ new_msr |= (target_ulong)1 << MSR_LE;
+ }
+#else
+ if (msr_ile) {
+ new_msr |= (target_ulong)1 << MSR_LE;
+ }
+#endif
+
+ /* Jump to handler */
+ vector = env->excp_vectors[excp];
+ if (vector == (target_ulong)-1ULL) {
+ cpu_abort(cs, "Raised an exception without defined vector %d\n",
+ excp);
+ }
+ vector |= env->excp_prefix;
+#if defined(TARGET_PPC64)
+ if (excp_model == POWERPC_EXCP_BOOKE) {
+ if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) {
+ /* Cat.64-bit: EPCR.ICM is copied to MSR.CM */
+ new_msr |= (target_ulong)1 << MSR_CM;
+ } else {
+ vector = (uint32_t)vector;
+ }
+ } else {
+ if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
+ vector = (uint32_t)vector;
+ } else {
+ new_msr |= (target_ulong)1 << MSR_SF;
+ }
+ }
+#endif
+ /* XXX: we don't use hreg_store_msr here as already have treated
+ * any special case that could occur. Just store MSR and update hflags
+ */
+ env->msr = new_msr & env->msr_mask;
+ hreg_compute_hflags(env);
+ env->nip = vector;
+ /* Reset exception state */
+ cs->exception_index = POWERPC_EXCP_NONE;
+ env->error_code = 0;
+
+ if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
+ (env->mmu_model == POWERPC_MMU_BOOKE206)) {
+ /* XXX: The BookE changes address space when switching modes,
+ we should probably implement that as different MMU indexes,
+ but for the moment we do it the slow way and flush all. */
+ tlb_flush(cs, 1);
+ }
+}
+
+void ppc_cpu_do_interrupt(CPUState *cs)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+
+ powerpc_excp(cpu, env->excp_model, cs->exception_index);
+}
+
+static void ppc_hw_interrupt(CPUPPCState *env)
+{
+ PowerPCCPU *cpu = ppc_env_get_cpu(env);
+ int hdice;
+#if 0
+ CPUState *cs = CPU(cpu);
+
+ qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
+ __func__, env, env->pending_interrupts,
+ cs->interrupt_request, (int)msr_me, (int)msr_ee);
+#endif
+ /* External reset */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
+ return;
+ }
+ /* Machine check exception */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_MCHECK);
+ return;
+ }
+#if 0 /* TODO */
+ /* External debug exception */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DEBUG);
+ return;
+ }
+#endif
+ if (0) {
+ /* XXX: find a suitable condition to enable the hypervisor mode */
+ hdice = env->spr[SPR_LPCR] & 1;
+ } else {
+ hdice = 0;
+ }
+ if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
+ /* Hypervisor decrementer exception */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_HDECR);
+ return;
+ }
+ }
+ if (msr_ce != 0) {
+ /* External critical interrupt */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
+ /* Taking a critical external interrupt does not clear the external
+ * critical interrupt status
+ */
+#if 0
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
+#endif
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_CRITICAL);
+ return;
+ }
+ }
+ if (msr_ee != 0) {
+ /* Watchdog timer on embedded PowerPC */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_WDT);
+ return;
+ }
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORCI);
+ return;
+ }
+ /* Fixed interval timer on embedded PowerPC */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_FIT);
+ return;
+ }
+ /* Programmable interval timer on embedded PowerPC */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PIT);
+ return;
+ }
+ /* Decrementer exception */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
+ if (ppc_decr_clear_on_delivery(env)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
+ }
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DECR);
+ return;
+ }
+ /* External interrupt */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
+ /* Taking an external interrupt does not clear the external
+ * interrupt status
+ */
+#if 0
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
+#endif
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_EXTERNAL);
+ return;
+ }
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORI);
+ return;
+ }
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PERFM);
+ return;
+ }
+ /* Thermal interrupt */
+ if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
+ env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_THERM);
+ return;
+ }
+ }
+}
+
+void ppc_cpu_do_system_reset(CPUState *cs)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+
+ powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
+}
+#endif /* !CONFIG_USER_ONLY */
+
+bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *env = &cpu->env;
+
+ if (interrupt_request & CPU_INTERRUPT_HARD) {
+ ppc_hw_interrupt(env);
+ if (env->pending_interrupts == 0) {
+ cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
+ }
+ return true;
+ }
+ return false;
+}
+
+#if defined(DEBUG_OP)
+static void cpu_dump_rfi(target_ulong RA, target_ulong msr)
+{
+ qemu_log("Return from exception at " TARGET_FMT_lx " with flags "
+ TARGET_FMT_lx "\n", RA, msr);
+}
+#endif
+
+/*****************************************************************************/
+/* Exceptions processing helpers */
+
+void helper_raise_exception_err(CPUPPCState *env, uint32_t exception,
+ uint32_t error_code)
+{
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+
+#if 0
+ printf("Raise exception %3x code : %d\n", exception, error_code);
+#endif
+ cs->exception_index = exception;
+ env->error_code = error_code;
+ cpu_loop_exit(cs);
+}
+
+void helper_raise_exception(CPUPPCState *env, uint32_t exception)
+{
+ helper_raise_exception_err(env, exception, 0);
+}
+
+#if !defined(CONFIG_USER_ONLY)
+void helper_store_msr(CPUPPCState *env, target_ulong val)
+{
+ CPUState *cs;
+
+ val = hreg_store_msr(env, val, 0);
+ if (val != 0) {
+ cs = CPU(ppc_env_get_cpu(env));
+ cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
+ helper_raise_exception(env, val);
+ }
+}
+
+static inline void do_rfi(CPUPPCState *env, target_ulong nip, target_ulong msr,
+ target_ulong msrm, int keep_msrh)
+{
+ CPUState *cs = CPU(ppc_env_get_cpu(env));
+
+#if defined(TARGET_PPC64)
+ if (msr_is_64bit(env, msr)) {
+ nip = (uint64_t)nip;
+ msr &= (uint64_t)msrm;
+ } else {
+ nip = (uint32_t)nip;
+ msr = (uint32_t)(msr & msrm);
+ if (keep_msrh) {
+ msr |= env->msr & ~((uint64_t)0xFFFFFFFF);
+ }
+ }
+#else
+ nip = (uint32_t)nip;
+ msr &= (uint32_t)msrm;
+#endif
+ /* XXX: beware: this is false if VLE is supported */
+ env->nip = nip & ~((target_ulong)0x00000003);
+ hreg_store_msr(env, msr, 1);
+#if defined(DEBUG_OP)
+ cpu_dump_rfi(env->nip, env->msr);
+#endif
+ /* No need to raise an exception here,
+ * as rfi is always the last insn of a TB
+ */
+ cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
+}
+
+void helper_rfi(CPUPPCState *env)
+{
+ if (env->excp_model == POWERPC_EXCP_BOOKE) {
+ do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
+ ~((target_ulong)0), 0);
+ } else {
+ do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
+ ~((target_ulong)0x783F0000), 1);
+ }
+}
+
+#if defined(TARGET_PPC64)
+void helper_rfid(CPUPPCState *env)
+{
+ do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
+ ~((target_ulong)0x783F0000), 0);
+}
+
+void helper_hrfid(CPUPPCState *env)
+{
+ do_rfi(env, env->spr[SPR_HSRR0], env->spr[SPR_HSRR1],
+ ~((target_ulong)0x783F0000), 0);
+}
+#endif
+
+/*****************************************************************************/
+/* Embedded PowerPC specific helpers */
+void helper_40x_rfci(CPUPPCState *env)
+{
+ do_rfi(env, env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3],
+ ~((target_ulong)0xFFFF0000), 0);
+}
+
+void helper_rfci(CPUPPCState *env)
+{
+ do_rfi(env, env->spr[SPR_BOOKE_CSRR0], env->spr[SPR_BOOKE_CSRR1],
+ ~((target_ulong)0), 0);
+}
+
+void helper_rfdi(CPUPPCState *env)
+{
+ /* FIXME: choose CSRR1 or DSRR1 based on cpu type */
+ do_rfi(env, env->spr[SPR_BOOKE_DSRR0], env->spr[SPR_BOOKE_DSRR1],
+ ~((target_ulong)0), 0);
+}
+
+void helper_rfmci(CPUPPCState *env)
+{
+ /* FIXME: choose CSRR1 or MCSRR1 based on cpu type */
+ do_rfi(env, env->spr[SPR_BOOKE_MCSRR0], env->spr[SPR_BOOKE_MCSRR1],
+ ~((target_ulong)0), 0);
+}
+#endif
+
+void helper_tw(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
+ uint32_t flags)
+{
+ if (!likely(!(((int32_t)arg1 < (int32_t)arg2 && (flags & 0x10)) ||
+ ((int32_t)arg1 > (int32_t)arg2 && (flags & 0x08)) ||
+ ((int32_t)arg1 == (int32_t)arg2 && (flags & 0x04)) ||
+ ((uint32_t)arg1 < (uint32_t)arg2 && (flags & 0x02)) ||
+ ((uint32_t)arg1 > (uint32_t)arg2 && (flags & 0x01))))) {
+ helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+ POWERPC_EXCP_TRAP);
+ }
+}
+
+#if defined(TARGET_PPC64)
+void helper_td(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
+ uint32_t flags)
+{
+ if (!likely(!(((int64_t)arg1 < (int64_t)arg2 && (flags & 0x10)) ||
+ ((int64_t)arg1 > (int64_t)arg2 && (flags & 0x08)) ||
+ ((int64_t)arg1 == (int64_t)arg2 && (flags & 0x04)) ||
+ ((uint64_t)arg1 < (uint64_t)arg2 && (flags & 0x02)) ||
+ ((uint64_t)arg1 > (uint64_t)arg2 && (flags & 0x01))))) {
+ helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+ POWERPC_EXCP_TRAP);
+ }
+}
+#endif
+
+#if !defined(CONFIG_USER_ONLY)
+/*****************************************************************************/
+/* PowerPC 601 specific instructions (POWER bridge) */
+
+void helper_rfsvc(CPUPPCState *env)
+{
+ do_rfi(env, env->lr, env->ctr, 0x0000FFFF, 0);
+}
+
+/* Embedded.Processor Control */
+static int dbell2irq(target_ulong rb)
+{
+ int msg = rb & DBELL_TYPE_MASK;
+ int irq = -1;
+
+ switch (msg) {
+ case DBELL_TYPE_DBELL:
+ irq = PPC_INTERRUPT_DOORBELL;
+ break;
+ case DBELL_TYPE_DBELL_CRIT:
+ irq = PPC_INTERRUPT_CDOORBELL;
+ break;
+ case DBELL_TYPE_G_DBELL:
+ case DBELL_TYPE_G_DBELL_CRIT:
+ case DBELL_TYPE_G_DBELL_MC:
+ /* XXX implement */
+ default:
+ break;
+ }
+
+ return irq;
+}
+
+void helper_msgclr(CPUPPCState *env, target_ulong rb)
+{
+ int irq = dbell2irq(rb);
+
+ if (irq < 0) {
+ return;
+ }
+
+ env->pending_interrupts &= ~(1 << irq);
+}
+
+void helper_msgsnd(target_ulong rb)
+{
+ int irq = dbell2irq(rb);
+ int pir = rb & DBELL_PIRTAG_MASK;
+ CPUState *cs;
+
+ if (irq < 0) {
+ return;
+ }
+
+ CPU_FOREACH(cs) {
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ CPUPPCState *cenv = &cpu->env;
+
+ if ((rb & DBELL_BRDCAST) || (cenv->spr[SPR_BOOKE_PIR] == pir)) {
+ cenv->pending_interrupts |= 1 << irq;
+ cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+ }
+ }
+}
+#endif