sysdeps/unix/sysv/linux/sparc/sparc64/getcontext.S

   1 /* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Richard Henderson (rth@tamu.edu).
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <sysdep.h>
  21 #include "ucontext_i.h"
  22
  23 /* int getcontext(ucontext_t *); */
  24
  25 ENTRY(__getcontext)
  26
  27         ldx     [%o0 + UC_LINK], %o1    /* Preserve uc_link field, the
  28                                            trap clears it.  */
  29         ta      0x6e
  30 1:
  31         ldx     [%o0 + UC_M_PC], %o2
  32         ldx     [%o0 + UC_M_NPC], %o3
  33         ldx     [%o0 + __UC_SIGMASK], %o4
  34         stx     %o1, [%o0 + UC_LINK]
  35         add     %o2, 2f - 1b, %o2
  36         stx     %o2, [%o0 + UC_M_PC]
  37         add     %o3, 2f - 1b, %o3
  38         stx     %o3, [%o0 + UC_M_NPC]
  39 #if SIGMASK_WORDS == 16
  40         stx     %o4, [%o0 + UC_SIGMASK]
  41         stx     %g0, [%o0 + UC_SIGMASK + 8]
  42         stx     %g0, [%o0 + UC_SIGMASK + 16]
  43         stx     %g0, [%o0 + UC_SIGMASK + 24]
  44         stx     %g0, [%o0 + UC_SIGMASK + 32]
  45         stx     %g0, [%o0 + UC_SIGMASK + 40]
  46         stx     %g0, [%o0 + UC_SIGMASK + 48]
  47         stx     %g0, [%o0 + UC_SIGMASK + 56]
  48         stx     %g0, [%o0 + UC_SIGMASK + 64]
  49         stx     %g0, [%o0 + UC_SIGMASK + 72]
  50         stx     %g0, [%o0 + UC_SIGMASK + 80]
  51         stx     %g0, [%o0 + UC_SIGMASK + 88]
  52         stx     %g0, [%o0 + UC_SIGMASK + 96]
  53         stx     %g0, [%o0 + UC_SIGMASK + 104]
  54         stx     %g0, [%o0 + UC_SIGMASK + 112]
  55         stx     %g0, [%o0 + UC_SIGMASK + 120]
  56 #else
  57 # error Adjust __getcontext
  58 #endif
  59 2:
  60         retl
  61          clr    %o0
  62
  63 END(__getcontext)
  64
  65 weak_alias(__getcontext, getcontext)