sysdeps/x86_64/bsd-setjmp.S

   1 /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  x86-64 version.
   2    Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001, 2005
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 /* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
  22    We cannot do it in C because it must be a tail-call, so frame-unwinding
  23    in setjmp doesn't clobber the state restored by longjmp.  */
  24
  25 #include <sysdep.h>
  26 #define _ASM
  27 #define _SETJMP_H
  28 #include <bits/setjmp.h>
  29 #include "bp-sym.h"
  30 #include "bp-asm.h"
  31
  32 ENTRY (BP_SYM (setjmp))
  33         /* Set up arguments, we only need to set the 2nd arg.  */
  34         movl $1, %esi
  35 #ifdef  PIC
  36         jmp HIDDEN_JUMPTARGET (__sigsetjmp)
  37 #else
  38         jmp BP_SYM (__sigsetjmp)
  39 #endif
  40 END (BP_SYM (setjmp))