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* crt1.c (_gnu_exception_handler): Handle illegal instruction

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OS exception as a signal if user has defined a SIGILL handler.
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Danny Smith
2005-05-19 22:44:13 +00:00
parent 89e5f7f81e
commit 45e3403e7b
2 changed files with 24 additions and 0 deletions
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5
winsup/mingw/ChangeLog
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@@ -1,3 +1,8 @@
2005-05-20 Danny Smith <dannysmith@users.sourceforge
* crt1.c (_gnu_exception_handler): Handle illegal instruction
OS exception as a signal if user has defined a SIGILL handler.
2005-05-10 Danny Smith <dannysmith@users.sourceforge.net> 2005-05-10 Danny Smith <dannysmith@users.sourceforge.net>
* mingwex/math/nexttoward.c: New file. * mingwex/math/nexttoward.c: New file.

19
winsup/mingw/crt1.c
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@@ -124,6 +124,25 @@ _gnu_exception_handler (EXCEPTION_POINTERS * exception_data)
} }
break; break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
case EXCEPTION_PRIV_INSTRUCTION:
/* test if the user has set SIGILL */
old_handler = signal (SIGILL, SIG_DFL);
if (old_handler == SIG_IGN)
{
/* this is undefined if the signal was raised by anything other
than raise (). */
signal (SIGILL, SIG_IGN);
action = EXCEPTION_CONTINUE_EXECUTION;
}
else if (old_handler != SIG_DFL)
{
/* This means 'old' is a user defined function. Call it */
(*old_handler) (SIGILL);
action = EXCEPTION_CONTINUE_EXECUTION;
}
break;
case EXCEPTION_FLT_INVALID_OPERATION: case EXCEPTION_FLT_INVALID_OPERATION:
case EXCEPTION_FLT_DIVIDE_BY_ZERO: case EXCEPTION_FLT_DIVIDE_BY_ZERO:
case EXCEPTION_FLT_DENORMAL_OPERAND: case EXCEPTION_FLT_DENORMAL_OPERAND: