1 /* setjmp for 64 bit S/390, ELF version.
2 Copyright (C) 2001-2014 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, see
18 <http://www.gnu.org/licenses/>. */
23 #include <bits/setjmp.h>
24 #include <shlib-compat.h>
25 #include <stap-probe.h>
27 #if !defined IS_IN_rtld
28 # if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
29 /* we need a unique name in case of symbol versioning. */
30 # define __sigsetjmp __v1__sigsetjmp
31 # endif /* if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) */
32 #endif /* !defined IS_IN_rtld */
34 /* We include the BSD entry points here as well but we make
37 .weak C_SYMBOL_NAME (setjmp)
38 lghi %r3,1 /* Second argument of one. */
39 j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */
42 /* Binary compatibility entry point. */
44 .weak C_SYMBOL_NAME (_setjmp)
45 slgr %r3,%r3 /* Second argument of zero. */
46 j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */
48 libc_hidden_def (_setjmp)
51 slgr %r3,%r3 /* Second argument of zero. */
52 j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */
57 /* setjmp probe expects sig/setjmp first argument (8@%r2), second
58 argument (-8@%r3) and target address (8@%r14). */
59 LIBC_PROBE (setjmp, 3, 8@%r2, -4@%r3, 8@%r14)
61 stmg %r6,%r13,0(%r2) /* Store registers in jmp_buf. */
65 PTR_MANGLE2 (%r5, %r1)
68 stmg %r6,%r15,0(%r2) /* Store registers in jmp_buf. */
79 /* In ld.so we never save the signal mask. */
83 jg __sigjmp_save@PLT /* Branch to PLT of __sigsetjmp. */
89 #if !defined IS_IN_rtld
90 # if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
91 /* In glibc release 2.19 new versions of setjmp-functions were introduced,
92 but were reverted before 2.20. Thus both versions are the same function. */
96 weak_alias (setjmp, __v1setjmp);
97 weak_alias (setjmp, __v2setjmp);
98 versioned_symbol (libc, __v1setjmp, setjmp, GLIBC_2_0);
99 compat_symbol (libc, __v2setjmp, setjmp, GLIBC_2_19);
101 weak_alias (_setjmp, __v1_setjmp);
102 weak_alias (_setjmp, __v2_setjmp);
103 versioned_symbol (libc, __v1_setjmp, _setjmp, GLIBC_2_0);
104 compat_symbol (libc, __v2_setjmp, _setjmp, GLIBC_2_19);
106 strong_alias (__v1__sigsetjmp, __v2__sigsetjmp);
107 versioned_symbol (libc, __v1__sigsetjmp, __sigsetjmp, GLIBC_2_0);
108 compat_symbol (libc, __v2__sigsetjmp, __sigsetjmp, GLIBC_2_19);
109 # endif /* if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) */
110 #endif /* if !defined IS_IN_rtld */