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Log registers before and after cpuid

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offtkp 2024-09-17 00:10:05 +03:00
parent d9027e6936
commit f704ca54bf
1 changed files with 6 additions and 0 deletions
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6
src/core/signals.cpp
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@ -39,6 +39,7 @@ static LONG WINAPI SignalHandler(EXCEPTION_POINTERS* pExp) noexcept {
int results[4]; // that's the type __cpuidex expects int results[4]; // that's the type __cpuidex expects
int rax = (int)(u32)pExp->ContextRecord->Rax; int rax = (int)(u32)pExp->ContextRecord->Rax;
int rcx = (int)(u32)pExp->ContextRecord->Rcx; int rcx = (int)(u32)pExp->ContextRecord->Rcx;
LOG_ERROR(Core, "CPUID - RAX BEFORE: 0x{:x}, RCX BEFORE: 0x{:x}", rax, rcx);
__cpuidex(reinterpret_cast<int*>(results), static_cast<int>(rax), __cpuidex(reinterpret_cast<int*>(results), static_cast<int>(rax),
static_cast<int>(rcx)); static_cast<int>(rcx));
pExp->ContextRecord->Rax = results[0]; pExp->ContextRecord->Rax = results[0];
@ -46,6 +47,8 @@ static LONG WINAPI SignalHandler(EXCEPTION_POINTERS* pExp) noexcept {
pExp->ContextRecord->Rcx = results[2]; pExp->ContextRecord->Rcx = results[2];
pExp->ContextRecord->Rdx = results[3]; pExp->ContextRecord->Rdx = results[3];
pExp->ContextRecord->Rip += 1; // skip the illegal instruction pExp->ContextRecord->Rip += 1; // skip the illegal instruction
LOG_ERROR(Core, "CPUID - RAX AFTER: 0x{:x}, RBX AFTER: 0x{:x}, RCX AFTER: 0x{:x}, RDX AFTER: 0x{:x}",
results[0], results[1], results[2], results[3]);
handled = EXCEPTION_CONTINUE_EXECUTION; handled = EXCEPTION_CONTINUE_EXECUTION;
} else { } else {
handled = signals->DispatchIllegalInstruction(code_address); handled = signals->DispatchIllegalInstruction(code_address);
@ -126,12 +129,15 @@ static void SignalHandler(int sig, siginfo_t* info, void* raw_context) {
u64 results[4]; u64 results[4];
u64 rax = ctx->uc_mcontext.gregs[REG_RAX]; u64 rax = ctx->uc_mcontext.gregs[REG_RAX];
u64 rcx = ctx->uc_mcontext.gregs[REG_RCX]; u64 rcx = ctx->uc_mcontext.gregs[REG_RCX];
LOG_ERROR(Core, "CPUID - RAX BEFORE: 0x{:x}, RCX BEFORE: 0x{:x}", rax, rcx);
__cpuid_count(rax, rcx, results[0], results[1], results[2], results[3]); __cpuid_count(rax, rcx, results[0], results[1], results[2], results[3]);
ctx->uc_mcontext.gregs[REG_RAX] = results[0]; ctx->uc_mcontext.gregs[REG_RAX] = results[0];
ctx->uc_mcontext.gregs[REG_RBX] = results[1]; ctx->uc_mcontext.gregs[REG_RBX] = results[1];
ctx->uc_mcontext.gregs[REG_RCX] = results[2]; ctx->uc_mcontext.gregs[REG_RCX] = results[2];
ctx->uc_mcontext.gregs[REG_RDX] = results[3]; ctx->uc_mcontext.gregs[REG_RDX] = results[3];
ctx->uc_mcontext.gregs[REG_RIP] += 1; // skip the illegal instruction ctx->uc_mcontext.gregs[REG_RIP] += 1; // skip the illegal instruction
LOG_ERROR(Core, "CPUID - RAX AFTER: 0x{:x}, RBX AFTER: 0x{:x}, RCX AFTER: 0x{:x}, RDX AFTER: 0x{:x}",
results[0], results[1], results[2], results[3]);
break; break;
} else { } else {
if (!signals->DispatchIllegalInstruction(code_address)) { if (!signals->DispatchIllegalInstruction(code_address)) {