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

   1 /* Unwinder test program for signal frames.
   2
   3    Copyright 2007 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 void sigframe (void);
  23 void setup (void);
  24
  25 void
  26 func (void)
  27 {
  28 }
  29
  30 int
  31 main (void)
  32 {
  33   setup ();
  34 }
  35
  36 /* Create an imitation signal frame.  This will work on any x86 or
  37    x86-64 target which uses a version of GAS recent enough for
  38    .cfi_signal_frame (added 2006-02-27 and included in binutils 2.17).
  39    The default CIE created by gas suffices to unwind from an empty
  40    function.  */
  41
  42 asm(".text\n"
  43     "    .align 8\n"
  44     "    .globl setup\n"
  45     "setup:\n"
  46     "    push $sigframe\n"
  47     "    jmp func\n"
  48     "\n"
  49     "    .cfi_startproc\n"
  50     "    .cfi_signal_frame\n"
  51     "    nop\n"
  52     "    .globl sigframe\n"
  53     "sigframe:\n"
  54     "    ret\n"
  55     "    .cfi_endproc");