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Support stackwalk64 for 32-bit x86

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Jeremy 2023-10-04 13:13:48 -04:00
parent b80026596f
commit 81b2e46df1
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GPG Key ID: 3E11861CB34E158C
1 changed files with 14 additions and 1 deletions
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15
src/unwind/unwind_with_dbghelp.cpp
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@ -32,9 +32,10 @@ namespace detail {
// GetThreadContext cannot be used on the current thread.
// RtlCaptureContext doesn't work on i386
CONTEXT context;
#ifdef _M_IX86
#if defined(_M_IX86) || defined(__i386__)
ZeroMemory(&context, sizeof(CONTEXT));
context.ContextFlags = CONTEXT_CONTROL;
#if IS_MSVC
__asm {
label:
mov [context.Ebp], ebp;
@ -43,6 +44,18 @@ namespace detail {
mov [context.Eip], eax;
}
#else
asm(
"label:\n\t"
"mov{l %%ebp, %[cEbp] | %[cEbp], ebp};\n\t"
"mov{l %%esp, %[cEsp] | %[cEsp], esp};\n\t"
"mov{l $label, %%eax | eax, label};\n\t"
"mov{l %%eax, %[cEip] | %[cEip], eax};\n\t"
: [cEbp] "=r" (context.Ebp),
[cEsp] "=r" (context.Esp),
[cEip] "=r" (context.Eip)
);
#endif
#else
RtlCaptureContext(&context);
#endif
// Setup current frame