sysdeps/s390/s390-64/setjmp.S

   1 /* Copyright (C) 2001, 2005 Free Software Foundation, Inc.
   2    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
   3    This file is part of the GNU C Library.
   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 #ifndef _ASM
  21 #define _ASM
  22 #endif
  23
  24 #include <sysdep.h>
  25 #include <bits/setjmp.h>
  26
  27 /* Save the current program position in ENV and return 0.  */
  28 /* R2 = pointer to jmp_buf, R3 = savemask.  */
  29
  30 ENTRY(__sigsetjmp)
  31 #ifdef PTR_MANGLE
  32         stmg   %r6,%r13,0(%r2)      /* Store registers in jmp_buf.  */
  33         lgr    %r4,%r14
  34         lgr    %r5,%r15
  35         PTR_MANGLE (%r4, %r1)
  36         PTR_MANGLE2 (%r5, %r1)
  37         stmg   %r4,%r5,64(%r2)
  38 #else
  39         stmg   %r6,%r15,0(%r2)      /* Store registers in jmp_buf.  */
  40 #endif
  41         std    %f1,80(%r2)
  42         std    %f3,88(%r2)
  43         std    %f5,96(%r2)
  44         std    %f7,104(%r2)
  45 #if defined NOT_IN_libc && defined IS_IN_rtld
  46         /* In ld.so we never save the signal mask.  */
  47         lghi   %r2,0
  48         br     %r14
  49 #elif defined PIC
  50         jg     __sigjmp_save@PLT    /* Tail-call __sigjmp_save.  */
  51 #else
  52         jg     __sigjmp_save        /* Tail-call __sigjmp_save.  */
  53 #endif
  54 END (__sigsetjmp)