sysdeps/alpha/setjmp.S

   1 /* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <sysdep.h>
  20
  21 /* The function __sigsetjmp_aux saves all the registers, but it can't
  22    reliably access the stack or frame pointers, so we pass them in as
  23    extra arguments.  */
  24 ENTRY (__sigsetjmp)
  25         lda $27, __sigsetjmp_aux/* Load address to jump to.  */
  26         bis $15, $15, $18       /* Pass FP as 3rd arg.  */
  27         bis $30, $30, $19       /* Pass SP as 4th arg.  */
  28         jmp $31, ($27), __sigsetjmp_aux /* Call __sigsetjmp_aux.  */
  29         .end __sigsetjmp