30 lines
889 B
NASM
30 lines
889 B
NASM
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extrn ?MainExceptionHandler@@YAJPEAU_EXCEPTION_POINTERS@@@Z : PROC
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extrn VirtualAlloc : PROC
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.code
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; long __stdcall CrashHandler::ExceptionHandler( EXCEPTION_POINTERS *pExc );
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?ExceptionHandler@CrashHandler@@YAJPEAU_EXCEPTION_POINTERS@@@Z PROC
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push rbp
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mov rbp, rsp
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push rsi
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mov rsi, rcx
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xor rcx, rcx ; lpAddress = nullptr
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mov rdx, 8000h ; dwSize = iSize
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mov r8d, 00003000h; flAllocationType = MEM_COMMIT | MEM_RESERVE
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mov r9d, 04h ; flProtect = PAGE_READWRITE
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call VirtualAlloc ; char *pStack = (char *) VirtualAlloc( nullptr, iSize, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE );
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add rax, 8000h ; pStack += iSize;
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mov rcx, rsi ; Restore pExc
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pop rsi
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; mov rsp, rax ; FIXME: This instruction causes MainExceptionHandler abortion.
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call ?MainExceptionHandler@@YAJPEAU_EXCEPTION_POINTERS@@@Z
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mov rsp, rbp
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pop rbp
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ret
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?ExceptionHandler@CrashHandler@@YAJPEAU_EXCEPTION_POINTERS@@@Z ENDP
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END
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