70 lines
1.1 KiB
C
70 lines
1.1 KiB
C
#include <signal.h>
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#include <unistd.h>
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#include <stdlib.h>
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void foo (void);
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void bar (void);
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void subroutine (int);
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void handler (int);
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void have_a_very_merry_interrupt (void);
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int
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main ()
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{
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foo (); /* Put a breakpoint on foo() and call it to see a dummy frame */
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have_a_very_merry_interrupt ();
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return 0;
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}
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void
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foo (void)
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{
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}
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void
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bar (void)
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{
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*(char *)0 = 0; /* try to cause a segfault */
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/* On MMU-less system, previous memory access to address zero doesn't
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trigger a SIGSEGV. Trigger a SIGILL. Each arch should define its
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own illegal instruction here. */
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#if defined(__arm__)
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asm(".word 0xf8f00000");
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#elif defined(__TMS320C6X__)
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asm(".word 0x56454313");
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#else
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#endif
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}
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void
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handler (int sig)
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{
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subroutine (sig);
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}
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/* The first statement in subroutine () is a place for a breakpoint.
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Without it, the breakpoint is put on the while comparison and will
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be hit at each iteration. */
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void
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subroutine (int in)
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{
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int count = in;
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while (count < 100)
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count++;
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}
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void
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have_a_very_merry_interrupt (void)
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{
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signal (SIGALRM, handler);
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alarm (1);
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sleep (2); /* We'll receive that signal while sleeping */
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}
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