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Diffstat (limited to 'target/ppc/excp_helper.c')
-rw-r--r--target/ppc/excp_helper.c477
1 files changed, 3 insertions, 474 deletions
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 0eb6b7a..a393730 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -163,7 +163,7 @@ static void ppc_excp_debug_sw_tlb(CPUPPCState *env, int excp)
env->error_code);
}
-
+#if defined(TARGET_PPC64)
static int powerpc_reset_wakeup(CPUState *cs, CPUPPCState *env, int excp,
target_ulong *msr)
{
@@ -267,7 +267,6 @@ static void ppc_excp_apply_ail(PowerPCCPU *cpu, int excp_model, int excp,
target_ulong *new_msr,
target_ulong *vector)
{
-#if defined(TARGET_PPC64)
CPUPPCState *env = &cpu->env;
bool mmu_all_on = ((msr >> MSR_IR) & 1) && ((msr >> MSR_DR) & 1);
bool hv_escalation = !(msr & MSR_HVB) && (*new_msr & MSR_HVB);
@@ -356,8 +355,8 @@ static void ppc_excp_apply_ail(PowerPCCPU *cpu, int excp_model, int excp,
*vector |= 0xc000000000003000ull; /* Apply scv's AIL=3 offset */
}
}
-#endif
}
+#endif
static void powerpc_set_excp_state(PowerPCCPU *cpu,
target_ulong vector, target_ulong msr)
@@ -1663,476 +1662,6 @@ static inline void powerpc_excp_books(PowerPCCPU *cpu, int excp)
}
#endif
-/*
- * Note that this function should be greatly optimized when called
- * with a constant excp, from ppc_hw_interrupt
- */
-static inline void powerpc_excp_legacy(PowerPCCPU *cpu, int excp)
-{
- CPUState *cs = CPU(cpu);
- CPUPPCState *env = &cpu->env;
- int excp_model = env->excp_model;
- target_ulong msr, new_msr, vector;
- int srr0, srr1, lev = -1;
-
- if (excp <= POWERPC_EXCP_NONE || excp >= POWERPC_EXCP_NB) {
- cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
- }
-
- qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
- " => %s (%d) error=%02x\n", env->nip, powerpc_excp_name(excp),
- 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 preserves existing HV and ME unless
- * explicitly overriden
- */
- new_msr = env->msr & (((target_ulong)1 << MSR_ME) | MSR_HVB);
-
- /* target registers */
- srr0 = SPR_SRR0;
- srr1 = SPR_SRR1;
-
- /*
- * check for special resume at 0x100 from doze/nap/sleep/winkle on
- * P7/P8/P9
- */
- if (env->resume_as_sreset) {
- excp = powerpc_reset_wakeup(cs, env, excp, &msr);
- }
-
- /*
- * Hypervisor emulation assistance interrupt only exists on server
- * arch 2.05 server or later. We also don't want to generate it if
- * we don't have HVB in msr_mask (PAPR mode).
- */
- if (excp == POWERPC_EXCP_HV_EMU
-#if defined(TARGET_PPC64)
- && !(mmu_is_64bit(env->mmu_model) && (env->msr_mask & MSR_HVB))
-#endif /* defined(TARGET_PPC64) */
-
- ) {
- excp = POWERPC_EXCP_PROGRAM;
- }
-
-#ifdef TARGET_PPC64
- /*
- * SPEU and VPU share the same IVOR but they exist in different
- * processors. SPEU is e500v1/2 only and VPU is e6500 only.
- */
- if (excp_model == POWERPC_EXCP_BOOKE && excp == POWERPC_EXCP_VPU) {
- excp = POWERPC_EXCP_SPEU;
- }
-#endif
-
- 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;
-
- switch (excp) {
- 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_6xx:
- break;
- default:
- goto excp_invalid;
- }
- break;
- case POWERPC_EXCP_MCHECK: /* Machine check exception */
- if (msr_me == 0) {
- /*
- * Machine check exception is not enabled. Enter
- * checkstop state.
- */
- fprintf(stderr, "Machine check while not allowed. "
- "Entering checkstop state\n");
- if (qemu_log_separate()) {
- qemu_log("Machine check while not allowed. "
- "Entering checkstop state\n");
- }
- cs->halted = 1;
- cpu_interrupt_exittb(cs);
- }
- if (env->msr_mask & MSR_HVB) {
- /*
- * ISA specifies HV, but can be delivered to guest with HV
- * clear (e.g., see FWNMI in PAPR).
- */
- 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;
-
- env->spr[SPR_BOOKE_CSRR0] = env->nip;
- env->spr[SPR_BOOKE_CSRR1] = msr;
- break;
- default:
- break;
- }
- break;
- case POWERPC_EXCP_DSI: /* Data storage exception */
- trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
- break;
- case POWERPC_EXCP_ISI: /* Instruction storage exception */
- trace_ppc_excp_isi(msr, env->nip);
- msr |= env->error_code;
- break;
- case POWERPC_EXCP_EXTERNAL: /* External input */
- {
- bool lpes0;
-
- cs = CPU(cpu);
-
- /*
- * Exception targeting modifiers
- *
- * LPES0 is supported on POWER7/8/9
- * LPES1 is not supported (old iSeries mode)
- *
- * On anything else, we behave as if LPES0 is 1
- * (externals don't alter MSR:HV)
- */
-#if defined(TARGET_PPC64)
- if (excp_model == POWERPC_EXCP_POWER7 ||
- excp_model == POWERPC_EXCP_POWER8 ||
- excp_model == POWERPC_EXCP_POWER9 ||
- excp_model == POWERPC_EXCP_POWER10) {
- lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
- } else
-#endif /* defined(TARGET_PPC64) */
- {
- lpes0 = true;
- }
-
- if (!lpes0) {
- new_msr |= (target_ulong)MSR_HVB;
- new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
- srr0 = SPR_HSRR0;
- srr1 = SPR_HSRR1;
- }
- if (env->mpic_proxy) {
- /* IACK the IRQ on delivery */
- env->spr[SPR_BOOKE_EPR] = ldl_phys(cs->as, env->mpic_iack);
- }
- break;
- }
- case POWERPC_EXCP_ALIGN: /* Alignment exception */
- /* Get rS/rD and rA from faulting opcode */
- /*
- * Note: the opcode fields will not be set properly for a
- * direct store load/store, but nobody cares as nobody
- * actually uses direct store segments.
- */
- env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
- break;
- 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) {
- trace_ppc_excp_fp_ignore();
- cs->exception_index = POWERPC_EXCP_NONE;
- env->error_code = 0;
- return;
- }
-
- /*
- * FP exceptions always have NIP pointing to the faulting
- * instruction, so always use store_next and claim we are
- * precise in the MSR.
- */
- msr |= 0x00100000;
- env->spr[SPR_BOOKE_ESR] = ESR_FP;
- break;
- case POWERPC_EXCP_INVAL:
- trace_ppc_excp_inval(env->nip);
- msr |= 0x00080000;
- env->spr[SPR_BOOKE_ESR] = ESR_PIL;
- break;
- case POWERPC_EXCP_PRIV:
- msr |= 0x00040000;
- env->spr[SPR_BOOKE_ESR] = ESR_PPR;
- break;
- case POWERPC_EXCP_TRAP:
- 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;
- }
- break;
- case POWERPC_EXCP_SYSCALL: /* System call exception */
- lev = env->error_code;
-
- if ((lev == 1) && cpu->vhyp) {
- dump_hcall(env);
- } else {
- dump_syscall(env);
- }
-
- /*
- * We need to correct the NIP which in this case is supposed
- * to point to the next instruction
- */
- env->nip += 4;
-
- /* "PAPR mode" built-in hypercall emulation */
- if ((lev == 1) && cpu->vhyp) {
- PPCVirtualHypervisorClass *vhc =
- PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
- vhc->hypercall(cpu->vhyp, cpu);
- return;
- }
- if (lev == 1) {
- new_msr |= (target_ulong)MSR_HVB;
- }
- break;
- case POWERPC_EXCP_SYSCALL_VECTORED: /* scv exception */
- lev = env->error_code;
- dump_syscall(env);
- env->nip += 4;
- new_msr |= env->msr & ((target_ulong)1 << MSR_EE);
- new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
-
- vector += lev * 0x20;
-
- env->lr = env->nip;
- env->ctr = msr;
- break;
- case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
- case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
- case POWERPC_EXCP_DECR: /* Decrementer exception */
- break;
- case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
- /* FIT on 4xx */
- trace_ppc_excp_print("FIT");
- break;
- case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
- trace_ppc_excp_print("WDT");
- switch (excp_model) {
- case POWERPC_EXCP_BOOKE:
- srr0 = SPR_BOOKE_CSRR0;
- srr1 = SPR_BOOKE_CSRR1;
- break;
- default:
- break;
- }
- break;
- case POWERPC_EXCP_DTLB: /* Data TLB error */
- case POWERPC_EXCP_ITLB: /* Instruction TLB error */
- break;
- case POWERPC_EXCP_DEBUG: /* Debug interrupt */
- if (env->flags & POWERPC_FLAG_DE) {
- /* FIXME: choose one or the other based on CPU type */
- srr0 = SPR_BOOKE_DSRR0;
- srr1 = SPR_BOOKE_DSRR1;
-
- env->spr[SPR_BOOKE_CSRR0] = env->nip;
- env->spr[SPR_BOOKE_CSRR1] = msr;
-
- /* DBSR already modified by caller */
- } else {
- cpu_abort(cs, "Debug exception triggered on unsupported model\n");
- }
- break;
- case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable/VPU */
- env->spr[SPR_BOOKE_ESR] = ESR_SPV;
- break;
- case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
- break;
- case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
- srr0 = SPR_BOOKE_CSRR0;
- srr1 = SPR_BOOKE_CSRR1;
- break;
- case POWERPC_EXCP_RESET: /* System reset exception */
- /* A power-saving exception sets ME, otherwise it is unchanged */
- if (msr_pow) {
- /* indicate that we resumed from power save mode */
- msr |= 0x10000;
- new_msr |= ((target_ulong)1 << MSR_ME);
- }
- if (env->msr_mask & MSR_HVB) {
- /*
- * ISA specifies HV, but can be delivered to guest with HV
- * clear (e.g., see FWNMI in PAPR, NMI injection in QEMU).
- */
- new_msr |= (target_ulong)MSR_HVB;
- } else {
- if (msr_pow) {
- cpu_abort(cs, "Trying to deliver power-saving system reset "
- "exception %d with no HV support\n", excp);
- }
- }
- break;
- case POWERPC_EXCP_DSEG: /* Data segment exception */
- case POWERPC_EXCP_ISEG: /* Instruction segment exception */
- case POWERPC_EXCP_TRACE: /* Trace exception */
- break;
- case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
- msr |= env->error_code;
- /* fall through */
- case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
- case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
- case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
- case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
- case POWERPC_EXCP_SDOOR_HV: /* Hypervisor Doorbell interrupt */
- case POWERPC_EXCP_HV_EMU:
- case POWERPC_EXCP_HVIRT: /* Hypervisor virtualization */
- srr0 = SPR_HSRR0;
- srr1 = SPR_HSRR1;
- new_msr |= (target_ulong)MSR_HVB;
- new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
- break;
- case POWERPC_EXCP_VPU: /* Vector unavailable exception */
- case POWERPC_EXCP_VSXU: /* VSX unavailable exception */
- case POWERPC_EXCP_FU: /* Facility unavailable exception */
-#ifdef TARGET_PPC64
- env->spr[SPR_FSCR] |= ((target_ulong)env->error_code << 56);
-#endif
- break;
- case POWERPC_EXCP_HV_FU: /* Hypervisor Facility Unavailable Exception */
-#ifdef TARGET_PPC64
- env->spr[SPR_HFSCR] |= ((target_ulong)env->error_code << FSCR_IC_POS);
- srr0 = SPR_HSRR0;
- srr1 = SPR_HSRR1;
- new_msr |= (target_ulong)MSR_HVB;
- new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
-#endif
- break;
- case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
- trace_ppc_excp_print("PIT");
- break;
- case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
- case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
- case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
- switch (excp_model) {
- case POWERPC_EXCP_6xx:
- /* 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);
- }
- /* fall through */
- case POWERPC_EXCP_7xx:
- ppc_excp_debug_sw_tlb(env, excp);
-
- 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;
- default:
- cpu_abort(cs, "Invalid TLB miss exception\n");
- break;
- }
- break;
- case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
- case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
- case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
- case POWERPC_EXCP_FPA: /* Floating-point assist exception */
- case POWERPC_EXCP_DABR: /* Data address breakpoint */
- case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
- case POWERPC_EXCP_SMI: /* System management interrupt */
- case POWERPC_EXCP_THERM: /* Thermal interrupt */
- case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
- case POWERPC_EXCP_VPUA: /* Vector assist exception */
- case POWERPC_EXCP_SOFTP: /* Soft patch exception */
- case POWERPC_EXCP_MAINT: /* Maintenance exception */
- case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
- case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
- cpu_abort(cs, "%s exception not implemented\n",
- powerpc_excp_name(excp));
- break;
- default:
- excp_invalid:
- cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
- break;
- }
-
- /* Sanity check */
- if (!(env->msr_mask & MSR_HVB)) {
- if (new_msr & MSR_HVB) {
- cpu_abort(cs, "Trying to deliver HV exception (MSR) %d with "
- "no HV support\n", excp);
- }
- if (srr0 == SPR_HSRR0) {
- cpu_abort(cs, "Trying to deliver HV exception (HSRR) %d with "
- "no HV support\n", excp);
- }
- }
-
- /*
- * Sort out endianness of interrupt, this differs depending on the
- * CPU, the HV mode, etc...
- */
- if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
- new_msr |= (target_ulong)1 << MSR_LE;
- }
-
-#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 && !mmu_is_64bit(env->mmu_model)) {
- vector = (uint32_t)vector;
- } else {
- new_msr |= (target_ulong)1 << MSR_SF;
- }
- }
-#endif
-
- if (excp != POWERPC_EXCP_SYSCALL_VECTORED) {
- /* Save PC */
- env->spr[srr0] = env->nip;
-
- /* Save MSR */
- env->spr[srr1] = msr;
- }
-
- /* This can update new_msr and vector if AIL applies */
- ppc_excp_apply_ail(cpu, excp_model, excp, msr, &new_msr, &vector);
-
- powerpc_set_excp_state(cpu, vector, new_msr);
-}
-
static void powerpc_excp(PowerPCCPU *cpu, int excp)
{
CPUPPCState *env = &cpu->env;
@@ -2161,7 +1690,7 @@ static void powerpc_excp(PowerPCCPU *cpu, int excp)
powerpc_excp_books(cpu, excp);
break;
default:
- powerpc_excp_legacy(cpu, excp);
+ g_assert_not_reached();
}
}