From 99a230638a3674e921224dbe628159c867d734b1 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 24 Aug 2015 20:51:21 -0700 Subject: [PATCH] target-sparc: Store mmu index in TB flags Doing this instead of saving the raw PS_PRIV and TL. This means that all nucleus mode TBs (TL > 0) can be shared. This fixes a bug in that we didn't include HS_PRIV in the TB flags, and so could produce incorrect TB matches for hypervisor state. The LSU and DMMU states were unused by the translator. Including them in TB flags meant unnecessary mismatches from tb_find_fast. Tested-by: Mark Cave-Ayland Signed-off-by: Richard Henderson --- target-sparc/cpu.h | 26 ++++++++++++-------------- target-sparc/translate.c | 2 +- 2 files changed, 13 insertions(+), 15 deletions(-) diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h index 15364a0..a7e4723 100644 --- a/target-sparc/cpu.h +++ b/target-sparc/cpu.h @@ -719,34 +719,32 @@ void cpu_tick_set_limit(CPUTimer *timer, uint64_t limit); trap_state* cpu_tsptr(CPUSPARCState* env); #endif -#define TB_FLAG_FPU_ENABLED (1 << 4) -#define TB_FLAG_AM_ENABLED (1 << 5) +#define TB_FLAG_MMU_MASK 7 +#define TB_FLAG_FPU_ENABLED (1 << 4) +#define TB_FLAG_AM_ENABLED (1 << 5) static inline void cpu_get_tb_cpu_state(CPUSPARCState *env, target_ulong *pc, - target_ulong *cs_base, uint32_t *flags) + target_ulong *cs_base, uint32_t *pflags) { + uint32_t flags; *pc = env->pc; *cs_base = env->npc; + flags = cpu_mmu_index(env, false); #ifdef TARGET_SPARC64 - // AM . Combined FPU enable bits . PRIV . DMMU enabled . IMMU enabled - *flags = (env->pstate & PS_PRIV) /* 2 */ - | ((env->lsu & (DMMU_E | IMMU_E)) >> 2) /* 1, 0 */ - | ((env->tl & 0xff) << 8) - | (env->dmmu.mmu_primary_context << 16); /* 16... */ if (env->pstate & PS_AM) { - *flags |= TB_FLAG_AM_ENABLED; + flags |= TB_FLAG_AM_ENABLED; } - if ((env->def->features & CPU_FEATURE_FLOAT) && (env->pstate & PS_PEF) + if ((env->def->features & CPU_FEATURE_FLOAT) + && (env->pstate & PS_PEF) && (env->fprs & FPRS_FEF)) { - *flags |= TB_FLAG_FPU_ENABLED; + flags |= TB_FLAG_FPU_ENABLED; } #else - // FPU enable . Supervisor - *flags = env->psrs; if ((env->def->features & CPU_FEATURE_FLOAT) && env->psref) { - *flags |= TB_FLAG_FPU_ENABLED; + flags |= TB_FLAG_FPU_ENABLED; } #endif + *pflags = flags; } static inline bool tb_fpu_enabled(int tb_flags) diff --git a/target-sparc/translate.c b/target-sparc/translate.c index fc220ed..9000e9b 100644 --- a/target-sparc/translate.c +++ b/target-sparc/translate.c @@ -5248,7 +5248,7 @@ void gen_intermediate_code(CPUSPARCState * env, TranslationBlock * tb) last_pc = dc->pc; dc->npc = (target_ulong) tb->cs_base; dc->cc_op = CC_OP_DYNAMIC; - dc->mem_idx = cpu_mmu_index(env, false); + dc->mem_idx = tb->flags & TB_FLAG_MMU_MASK; dc->def = env->def; dc->fpu_enabled = tb_fpu_enabled(tb->flags); dc->address_mask_32bit = tb_am_enabled(tb->flags); -- 2.7.4