[Qemu-ppc] [PATCH 3/9] target-ppc: Introduce tm_enabled Bit to CPU State

[Tom Musta]

Add a bit (tm_enabled) to CPU state that mirrors the MSR[TM] bit.
This is analogous to the other "available" bits in the MSR (FP,
VSX, etc.).

NOTE: Since MSR[TM] occupies big-endian bit 31, the code is wrapped
with a PPC64 bit check.

Signed-off-by: Tom Musta <address@hidden>
---
 target-ppc/translate.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index d381632..7217041 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -203,6 +203,7 @@ typedef struct DisasContext {
     int altivec_enabled;
     int vsx_enabled;
     int spe_enabled;
+    int tm_enabled;
     ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */
     int singlestep_enabled;
     uint64_t insns_flags;
@@ -11311,6 +11312,13 @@ static inline void 
gen_intermediate_code_internal(PowerPCCPU *cpu,
     } else {
         ctx.vsx_enabled = 0;
     }
+#if defined(TARGET_PPC64)
+    if ((env->flags & POWERPC_FLAG_TM) && msr_tm) {
+        ctx.tm_enabled = msr_tm;
+    } else {
+        ctx.tm_enabled = 0;
+    }
+#endif
     if ((env->flags & POWERPC_FLAG_SE) && msr_se)
         ctx.singlestep_enabled = CPU_SINGLE_STEP;
     else
-- 
1.7.1