diff options
Diffstat (limited to 'sysdeps/s390/setjmp.S')
| -rw-r--r-- | sysdeps/s390/setjmp.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/s390/setjmp.S b/sysdeps/s390/setjmp.S new file mode 100644 index 0000000000..af3d3601f4 --- /dev/null +++ b/sysdeps/s390/setjmp.S @@ -0,0 +1,55 @@ +/* + Copyright (C) 2000 Free Software Foundation, Inc. + Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _ASM +#define _ASM +#endif + +#include <sysdep.h> +#include <bits/setjmp.h> + +/* Save the current program position in ENV and return 0. */ +/* R2 = pointer to jmp_buf, R3 = savemask */ + +/* Binary compatibility entry point. */ + +ENTRY(__setjmp) + sr %r3,%r3 /* set savemask to zero */ +END (__setjmp) + +ENTRY(__sigsetjmp) + stm %r6,%r15,0(%r2) /* store registers in jmp_buf */ +#ifdef PIC + /* We cannot use the PLT, because it requires that %r12 be set, but + we can't save and restore our caller's value. Instead, we do an + indirect jump through the GOT. */ + basr %r1,0 +.L0: al %r1,.L1 - .L0(0,%r1) /* get address of global offset table */ + /* get address of __sigjmp_save from got */ + l %r1,__sigjmp_save@GOT12(0,%r1) + br %r1 +.L1: .long _GLOBAL_OFFSET_TABLE_ - .L0 +#else + basr %r1,0 +.L0: l %r1,.L1-.L0(0,%r1) /* load address of __sigjmp_save */ + br %r1 /* tail-call __sigjmp_save */ +.L1: .long __sigjmp_save +#endif +END (__sigsetjmp) |