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eflags patch

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Preserves EFLAGS across basic blocks.

Reapplies commit 3a1f231e8f from qemu
This commit is contained in:
Andrew Dutcher 2018-09-07 21:39:51 -04:00 committed by Lioncash
parent 8ca718367f
commit 81f8a1be80
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GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 3 additions and 2 deletions
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5
qemu/target/i386/cpu.h
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@ -1709,9 +1709,10 @@ uint32_t cpu_cc_compute_all(CPUX86State *env1, int op);
static inline uint32_t cpu_compute_eflags(CPUX86State *env)
{
uint32_t eflags = env->eflags;
// Unicorn: Modified to use eflags0 instead of eflags
uint32_t eflags = env->eflags0;
if (tcg_enabled(env->uc)) {
eflags |= cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK);
eflags = (eflags & ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)) | cpu_cc_compute_all(env, CC_OP) | (env->df & DF_MASK);
}
return eflags;
}