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target-ppc: Introduce tm_enabled Bit to CPU State 

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 <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-12-18 10:34:31 -06:00 committed by Alexander Graf
parent e43668a7d2
commit 69d1a93774
1 changed files with 8 additions and 0 deletions
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8
target-ppc/translate.c
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@ -203,6 +203,7 @@ typedef struct DisasContext {
int altivec_enabled; int altivec_enabled;
int vsx_enabled; int vsx_enabled;
int spe_enabled; int spe_enabled;
int tm_enabled;
ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */ ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */
int singlestep_enabled; int singlestep_enabled;
uint64_t insns_flags; uint64_t insns_flags;
@ -11342,6 +11343,13 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
} else { } else {
ctx.vsx_enabled = 0; 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) if ((env->flags & POWERPC_FLAG_SE) && msr_se)
ctx.singlestep_enabled = CPU_SINGLE_STEP; ctx.singlestep_enabled = CPU_SINGLE_STEP;
else else