@@ -551,6 +551,477 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
powerpc_set_excp_state(cpu, vector, new_msr);
}
+static void powerpc_excp_74xx(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_G2:
+ 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_602:
+ case POWERPC_EXCP_603:
+ case POWERPC_EXCP_G2:
+ /* 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_7x5:
+ 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_IO: /* IO error exception */
+ case POWERPC_EXCP_RUNM: /* Run mode exception */
+ case POWERPC_EXCP_EMUL: /* Emulation trap exception */
+ 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);
+}
+
#ifdef TARGET_PPC64
static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
{
@@ -1335,6 +1806,9 @@ static void powerpc_excp(PowerPCCPU *cpu, int excp)
case POWERPC_EXCP_40x:
powerpc_excp_40x(cpu, excp);
break;
+ case POWERPC_EXCP_74xx:
+ powerpc_excp_74xx(cpu, excp);
+ break;
case POWERPC_EXCP_970:
case POWERPC_EXCP_POWER7:
case POWERPC_EXCP_POWER8:
Introduce a new powerpc_excp function specific for PowerPC 74xx CPUs. This commit copies powerpc_excp_legacy verbatim so the next one has a clean diff. Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> --- target/ppc/excp_helper.c | 474 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 474 insertions(+)