From 1f29871cb7518692cf5c1fa8c19b117c789ff7f0 Mon Sep 17 00:00:00 2001 From: Tom Musta Date: Tue, 22 Oct 2013 22:06:17 +1100 Subject: [PATCH] Add MSR VSX and Associated Exception This patch adds support for the VSX bit of the PowerPC Machine State Register (MSR) as well as the corresponding VSX Unavailable exception. The VSX bit is added to the defined bits masks of the Power7 and Power8 CPU models. Signed-off-by: Tom Musta Signed-off-by: Anton Blanchard Signed-off-by: Alexander Graf --- target-ppc/cpu.h | 4 ++++ target-ppc/excp_helper.c | 5 +++++ target-ppc/translate.c | 6 ++++++ target-ppc/translate_init.c | 5 +++-- 4 files changed, 18 insertions(+), 2 deletions(-) diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h index 826172b7bb..bb847676a5 100644 --- a/target-ppc/cpu.h +++ b/target-ppc/cpu.h @@ -236,6 +236,8 @@ enum { POWERPC_EXCP_NMEXTBR = 91, /* Non maskable external breakpoint */ POWERPC_EXCP_ITLBE = 92, /* Instruction TLB error */ POWERPC_EXCP_DTLBE = 93, /* Data TLB error */ + /* VSX Unavailable (Power ISA 2.06 and later) */ + POWERPC_EXCP_VSXU = 94, /* VSX Unavailable */ /* EOL */ POWERPC_EXCP_NB = 96, /* QEMU exceptions: used internally during code translation */ @@ -427,6 +429,7 @@ struct ppc_slb_t { #define MSR_VR 25 /* altivec available x hflags */ #define MSR_SPE 25 /* SPE enable for BookE x hflags */ #define MSR_AP 23 /* Access privilege state on 602 hflags */ +#define MSR_VSX 23 /* Vector Scalar Extension (ISA 2.06 and later) x hflags */ #define MSR_SA 22 /* Supervisor access mode on 602 hflags */ #define MSR_KEY 19 /* key bit on 603e */ #define MSR_POW 18 /* Power management */ @@ -467,6 +470,7 @@ struct ppc_slb_t { #define msr_vr ((env->msr >> MSR_VR) & 1) #define msr_spe ((env->msr >> MSR_SPE) & 1) #define msr_ap ((env->msr >> MSR_AP) & 1) +#define msr_vsx ((env->msr >> MSR_VSX) & 1) #define msr_sa ((env->msr >> MSR_SA) & 1) #define msr_key ((env->msr >> MSR_KEY) & 1) #define msr_pow ((env->msr >> MSR_POW) & 1) diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c index c959460f70..26c57d9a34 100644 --- a/target-ppc/excp_helper.c +++ b/target-ppc/excp_helper.c @@ -390,6 +390,11 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp) 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_PIT: /* Programmable interval timer interrupt */ LOG_EXCP("PIT exception\n"); goto store_next; diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 66c777174c..415f5d14e1 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -195,6 +195,7 @@ typedef struct DisasContext { #endif int fpu_enabled; int altivec_enabled; + int vsx_enabled; int spe_enabled; ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */ int singlestep_enabled; @@ -9759,6 +9760,11 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu, ctx.altivec_enabled = msr_vr; else ctx.altivec_enabled = 0; + if ((env->flags & POWERPC_FLAG_VSX) && msr_vsx) { + ctx.vsx_enabled = msr_vsx; + } else { + ctx.vsx_enabled = 0; + } if ((env->flags & POWERPC_FLAG_SE) && msr_se) ctx.singlestep_enabled = CPU_SINGLE_STEP; else diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index e2248158aa..35d1389ea9 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -3061,6 +3061,7 @@ static void init_excp_POWER7 (CPUPPCState *env) env->excp_vectors[POWERPC_EXCP_TRACE] = 0x00000D00; env->excp_vectors[POWERPC_EXCP_PERFM] = 0x00000F00; env->excp_vectors[POWERPC_EXCP_VPU] = 0x00000F20; + env->excp_vectors[POWERPC_EXCP_VSXU] = 0x00000F40; env->excp_vectors[POWERPC_EXCP_IABR] = 0x00001300; env->excp_vectors[POWERPC_EXCP_MAINT] = 0x00001600; env->excp_vectors[POWERPC_EXCP_VPUA] = 0x00001700; @@ -7236,7 +7237,7 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data) PPC_SEGMENT_64B | PPC_SLBI | PPC_POPCNTB | PPC_POPCNTWD; pcc->insns_flags2 = PPC2_VSX | PPC2_DFP | PPC2_DBRX | PPC2_ISA205; - pcc->msr_mask = 0x800000000204FF37ULL; + pcc->msr_mask = 0x800000000284FF37ULL; pcc->mmu_model = POWERPC_MMU_2_06; #if defined(CONFIG_SOFTMMU) pcc->handle_mmu_fault = ppc_hash64_handle_mmu_fault; @@ -7274,7 +7275,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data) PPC_SEGMENT_64B | PPC_SLBI | PPC_POPCNTB | PPC_POPCNTWD; pcc->insns_flags2 = PPC2_VSX | PPC2_DFP | PPC2_DBRX; - pcc->msr_mask = 0x800000000204FF36ULL; + pcc->msr_mask = 0x800000000284FF36ULL; pcc->mmu_model = POWERPC_MMU_2_06; #if defined(CONFIG_SOFTMMU) pcc->handle_mmu_fault = ppc_hash64_handle_mmu_fault;