1 /* setjmp for s390, ELF version.
2 Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include <bits/setjmp.h>
26 /* We include the BSD entry points here as well but we make
29 .weak C_SYMBOL_NAME (setjmp)
30 lhi %r3,1 /* second argument of one */
31 j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
34 /* Binary compatibility entry point. */
36 .weak C_SYMBOL_NAME (_setjmp)
37 lhi %r3,0 /* second argument of zero */
38 j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
40 libc_hidden_def (_setjmp)
43 lhi %r3,0 /* second argument of zero */
44 j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
50 stm %r6,%r13,0(%r2) /* store registers in jmp_buf */
54 PTR_MANGLE2 (%r5, %r1)
57 stm %r6,%r15,0(%r2) /* store registers in jmp_buf */
61 #if defined NOT_IN_libc && defined IS_IN_rtld
62 /* In ld.so we never save the signal mask. */
66 /* We cannot use the PLT, because it requires that %r12 be set, but
67 we can't save and restore our caller's value. Instead, we do an
68 indirect jump through the GOT. */
70 .L0: al %r1,.L1 - .L0(0,%r1) /* get address of global offset table */
71 /* get address of __sigjmp_save from got */
72 l %r1,__sigjmp_save@GOT12(0,%r1)
74 .L1: .long _GLOBAL_OFFSET_TABLE_ - .L0
77 .L0: l %r1,.L1-.L0(0,%r1) /* load address of __sigjmp_save */
78 br %r1 /* tail-call __sigjmp_save */
79 .L1: .long __sigjmp_save