gdb/testsuite/gdb.arch/i386-prologue.c

   1 void gdb1253 (void);
   2 void gdb1338 (void);
   3 void jump_at_beginning (void);
   4
   5 int
   6 main (void)
   7 {
   8   gdb1253 ();
   9   gdb1338 ();
  10   jump_at_beginning ();
  11   return 0;
  12 }
  13
  14 /* Relevant part of the prologue from symtab/1253.  */
  15
  16 asm(".text\n"
  17     "    .align 8\n"
  18     "gdb1253:\n"
  19     "    pushl %ebp\n"
  20     "    xorl  %ecx, %ecx\n"
  21     "    movl  %esp, %ebp\n"
  22     "    pushl %edi\n"
  23     "    int   $0x03\n"
  24     "    leave\n"
  25     "    ret\n");
  26
  27 /* Relevant part of the prologue from backtrace/1338.  */
  28
  29 asm(".text\n"
  30     "    .align 8\n"
  31     "gdb1338:\n"
  32     "    pushl %edi\n"
  33     "    pushl %esi\n"
  34     "    pushl %ebx\n"
  35     "    int   $0x03\n"
  36     "    popl  %ebx\n"
  37     "    popl  %esi\n"
  38     "    popl  %edi\n"
  39     "    ret\n");
  40
  41 /* The purpose of this function is to verify that, during prologue
  42    skip, GDB does not follow a jump at the beginnning of the "real"
  43    code.  */
  44
  45 asm(".text\n"
  46     "    .align 8\n"
  47     "jump_at_beginning:\n"
  48     "    pushl %ebp\n"
  49     "    movl  %esp,%ebp\n"
  50     "    jmp   .gdbjump\n"
  51     "    nop\n"
  52     ".gdbjump:\n"
  53     "    movl  %ebp,%esp\n"
  54     "    popl  %ebp\n"
  55     "    ret\n");