sysdeps/sparc/sparc32/setjmp.S

   1 /* Copyright (C) 1991-2014 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <sysdep.h>
  19 #include <sys/trap.h>
  20
  21 #include <jmpbuf-offsets.h>
  22
  23 ENTRY(_setjmp)
  24         b       1f
  25          set    0, %o1
  26 END(_setjmp)
  27 libc_hidden_def (_setjmp)
  28
  29 ENTRY(setjmp)
  30         set     1, %o1
  31 END(setjmp)
  32
  33 ENTRY (__sigsetjmp)
  34 1:
  35         /* Save our PC, SP and FP.  Save the signal mask if requested with
  36            a tail-call for simplicity; it always returns zero.  */
  37         ta      ST_FLUSH_WINDOWS
  38
  39 #ifdef PTR_MANGLE
  40         PTR_MANGLE (%g1, %o7, %g4)
  41         PTR_MANGLE2 (%g2, %sp, %g4)
  42         PTR_MANGLE2 (%g3, %fp, %g4)
  43         st      %g1, [%o0 + (JB_PC * 4)]
  44         st      %g2, [%o0 + (JB_SP * 4)]
  45         st      %g3, [%o0 + (JB_FP * 4)]
  46 #else
  47         st      %o7, [%o0 + (JB_PC * 4)]
  48         st      %sp, [%o0 + (JB_SP * 4)]
  49         st      %fp, [%o0 + (JB_FP * 4)]
  50 #endif
  51
  52         mov     %o7, %g1
  53         call    __sigjmp_save
  54          mov    %g1, %o7
  55 END(__sigsetjmp)
  56
  57 weak_extern(_setjmp)
  58 weak_extern(setjmp)