structured-exception

Why can’t 64-bit Windows unwind user-kernel-user exceptions?

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I’m the developer who wrote this Hotfix a loooooooong time ago as well as the blog post. The main reason is that the full register file isn’t always captured when you transition into kernel space, for performance reasons. If you make a normal syscall, the x64 Application Binary Interface (ABI) only requires you to preserve … Read more

What should I know about Structured Exceptions (SEH) in C++?

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They are the Win32 equivalent to Unix signals, and let you catch CPU exceptions such as access violation, illegal instruction, divide by zero. With the right compiler options (/EHa for Visual C++), C++ exceptions use the same mechanism as stack unwinding works properly for both C++ (user) exceptions and SEH (OS) exceptions. Unlike C++ exceptions, … Read more

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