sysdeps/sparc/setjmp.S

   1 /* Copyright (C) 1991, 1993, 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 /* NOTE: This code depends on the definition of `__jmp_buf' in <jmp_buf.h>.  */
  22
  23 ENTRY (__sigsetjmp)
  24         /* Save our return PC and SP (second store in the jmp delay slot).  */
  25         st %o7, [%o0]
  26         /* Save the signal mask if requested.  We do this as a tail-call
  27            for simplicity; it always returns zero.  */
  28         sethi %hi(C_SYMBOL_NAME (__sigjmp_save)), %g1
  29         or %lo(C_SYMBOL_NAME (__sigjmp_save)), %g1, %g1
  30         jmp %g1
  31         st %sp, [%o0 + 4]