Differences from the generic powerpc_excp code:
- Not BookE, so some MSR bits are cleared at interrupt dispatch;
- No MSR_HV or MSR_LE;
- No power saving states;
- No Hypervisor Emulation Assistance;
- Not 64 bits;
- No System call vectored;
- No Interrupts Little Endian;
- No Alternate Interrupt Location.
Exceptions used:
POWERPC_EXCP_ALIGN
POWERPC_EXCP_CRITICAL
POWERPC_EXCP_DEBUG
POWERPC_EXCP_DSI
POWERPC_EXCP_DTLB
POWERPC_EXCP_EXTERNAL
POWERPC_EXCP_FIT
POWERPC_EXCP_ISI
POWERPC_EXCP_ITLB
POWERPC_EXCP_MCHECK
POWERPC_EXCP_PIT
POWERPC_EXCP_PROGRAM
POWERPC_EXCP_SYSCALL
POWERPC_EXCP_WDT
Signed-off-by: Fabiano Rosas <faro...@linux.ibm.com>
---
target/ppc/excp_helper.c | 205 ++-------------------------------------
1 file changed, 10 insertions(+), 195 deletions(-)
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 12ab5e1b34..b5975dff3e 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -409,54 +409,26 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int 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;
- }
+ msr = env->msr & ~0x783f0000ULL;
/*
- * new interrupt handler msr preserves existing HV and ME unless
- * explicitly overriden
+ * new interrupt handler msr preserves existing ME unless
+ * explicitly overriden.
*/
- new_msr = env->msr & (((target_ulong)1 << MSR_ME) | MSR_HVB);
+ new_msr = env->msr & (((target_ulong)1 << MSR_ME));
/* 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).
+ * arch 2.05 server or later.
*/
- 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) */
-
- ) {
+ if (excp == POWERPC_EXCP_HV_EMU) {
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",
@@ -645,24 +617,7 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
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 */
@@ -693,119 +648,9 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
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);
@@ -824,41 +669,11 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int 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;
- }
+ /* Save PC */
+ env->spr[srr0] = env->nip;
-#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);
+ /* Save MSR */
+ env->spr[srr1] = msr;
powerpc_set_excp_state(cpu, vector, new_msr);
}
--
2.33.1
