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[v3,03/24] target-sparc: Store mmu index in TB flags

Message ID 1464847040-22536-4-git-send-email-rth@twiddle.net
State New
Headers show

Commit Message

Richard Henderson June 2, 2016, 5:56 a.m. UTC 
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.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-sparc/cpu.h       | 26 ++++++++++++--------------
 target-sparc/translate.c |  2 +-
 2 files changed, 13 insertions(+), 15 deletions(-)
diff mbox

Patch

diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h
index ba37f4b..31ea65b 100644
--- a/target-sparc/cpu.h
+++ b/target-sparc/cpu.h
@@ -720,34 +720,32 @@  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 bfeef35..fb3938a 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -5245,7 +5245,7 @@  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);