gdb/testsuite/gdb.mi/mi-syn-frame.c

   1 #include <signal.h>
   2 #include <unistd.h>
   3 #include <stdlib.h>
   4
   5 void foo (void);
   6 void bar (void);
   7
   8 void subroutine (int);
   9 void handler (int);
  10 void have_a_very_merry_interrupt (void);
  11
  12 int
  13 main ()
  14 {
  15   foo ();   /* Put a breakpoint on foo() and call it to see a dummy frame */
  16
  17
  18   have_a_very_merry_interrupt ();
  19   return 0;
  20 }
  21
  22 void
  23 foo (void)
  24 {
  25 }
  26
  27 void
  28 bar (void)
  29 {
  30   *(char *)0 = 0;    /* try to cause a segfault */
  31
  32   /* On MMU-less system, previous memory access to address zero doesn't
  33      trigger a SIGSEGV.  Trigger a SIGILL.  Each arch should define its
  34      own illegal instruction here.  */
  35 #if defined(__arm__)
  36   asm(".word 0xf8f00000");
  37 #elif defined(__TMS320C6X__)
  38   asm(".word 0x56454313");
  39 #else
  40 #endif
  41
  42 }
  43
  44 void
  45 handler (int sig)
  46 {
  47   subroutine (sig);
  48 }
  49
  50 /* The first statement in subroutine () is a place for a breakpoint.
  51    Without it, the breakpoint is put on the while comparison and will
  52    be hit at each iteration. */
  53
  54 void
  55 subroutine (int in)
  56 {
  57   int count = in;
  58   while (count < 100)
  59     count++;
  60 }
  61
  62 void
  63 have_a_very_merry_interrupt (void)
  64 {
  65   signal (SIGALRM, handler);
  66   alarm (1);
  67   sleep (2);  /* We'll receive that signal while sleeping */
  68 }
  69