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/*
* sehfix.c
*
* A test program involving an exception handler that fixes the exception
* causing condition.
*
* In this code we install an exception handler my_handler and then a piece
* of inline assembly attempts to write at the address marked in eax, after
* setting eax to 10. This should produce an exception. The handler then
* changes the eax register of the exception context to be the address of
* a static variable and restarts the code. This should allow everything
* to continue.
*/
#include <windows.h>
#include <excpt.h>
#include "exutil.h"
int x;
EXCEPTION_DISPOSITION
my_handler (
struct _EXCEPTION_RECORD* pExceptionRec,
void* pEstablisherFrame,
struct _CONTEXT* pContextRecord,
void* pDispatcherContext
)
{
printf ("In my exception handler!\n");
DumpExceptionRecord (pExceptionRec);
pContextRecord->Eax = (DWORD) &x;
return ExceptionContinueExecution;
}
main ()
{
x = 2;
printf ("x = %d\n", x);
WalkExceptionHandlers();
__try1(my_handler)
WalkExceptionHandlers();
/* This assembly code should produce an exception. */
__asm__("movl $10,%%eax;movl $1,(%%eax);" : : : "%eax");
__except1
WalkExceptionHandlers();
printf ("x = %d\n", x);
printf ("Finished!\n");
}
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