[fpc-pascal] How do FreePascal implement hardware exceptions handling?

[Andrzej Borucki]

I analyze FreePascal exceptions handling. Instead use of try-excpt-finally
statement I rather use fpc_LongJmp,fpc_PushExceptAddr etc. It works fine
for software exceptions (fpc_RaiseException) but not handle hardware
exceptions. I use install_exception_handlers at start program. This call
SetUnhandledExceptionFilter(@syswin32_i386_exception_handler) but is
problem:
in syswin32_i386_exception_handler is comparing "if
excep^.ContextRecord^.SegSs = _SS then" - _SS is correct stack segment but
excep^.ContextRecord^.SegSs - no, it is a different value, why?
I can attach my files

best,
Andrzej Borucki
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