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more PC sync for HOOK_INSN

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This commit is contained in:
mio
2025-04-12 23:24:49 +08:00
parent c9e6fdc4e8
commit 2d04b2a71d
2 changed files with 24 additions and 0 deletions
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12
qemu/target/i386/misc_helper.c
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@@ -217,6 +217,7 @@ void helper_rdtsc(CPUX86State *env)
uc_engine *uc = env->uc;
struct hook *hook;
int skip_rdtsc = 0;
bool synced = false;
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
raise_exception_ra(env, EXCP0D_GPF, GETPC());
@@ -234,6 +235,11 @@ void helper_rdtsc(CPUX86State *env)
// Multiple rdtsc callbacks returning different values is undefined.
// true -> skip the rdtsc instruction
if (hook->insn == UC_X86_INS_RDTSC) {
uintptr_t pc = GETPC();
if (!synced && !uc->skip_sync_pc_on_exit && pc) {
cpu_restore_state(uc->cpu, pc, false);
synced = true;
}
JIT_CALLBACK_GUARD_VAR(skip_rdtsc, ((uc_cb_insn_cpuid_t)hook->callback)(env->uc, hook->user_data));
}
@@ -255,6 +261,7 @@ void helper_rdtscp(CPUX86State *env)
uc_engine *uc = env->uc;
struct hook *hook;
int skip_rdtscp = 0;
bool synced = false;
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
raise_exception_ra(env, EXCP0D_GPF, GETPC());
@@ -272,6 +279,11 @@ void helper_rdtscp(CPUX86State *env)
// Multiple rdtscp callbacks returning different values is undefined.
// true -> skip the rdtscp instruction
if (hook->insn == UC_X86_INS_RDTSCP) {
uintptr_t pc = GETPC();
if (!synced && !uc->skip_sync_pc_on_exit && pc) {
cpu_restore_state(uc->cpu, pc, false);
synced = true;
}
JIT_CALLBACK_GUARD_VAR(skip_rdtscp, ((uc_cb_insn_cpuid_t)hook->callback)(env->uc, hook->user_data));
}