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492e01c8 | 1 | /* setjmp for 64 bit S/390, ELF version. |
04277e02 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
847b055c | 3 | Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
ffeac417 | 4 | This file is part of the GNU C Library. |
847b055c AJ |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
847b055c AJ |
10 | |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
847b055c | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
847b055c | 19 | |
ffeac417 | 20 | #include <sysdep.h> |
492e01c8 AJ |
21 | #define _ASM |
22 | #define _SETJMP_H | |
ffeac417 | 23 | #include <bits/setjmp.h> |
2f438e20 | 24 | #include <shlib-compat.h> |
53244a4e | 25 | #include <stap-probe.h> |
2f438e20 | 26 | |
001f81ad FW |
27 | #if !IS_IN (rtld) && defined SHARED \ |
28 | && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) | |
29 | # define NEED_COMPAT_SYMBOLS 1 | |
30 | /* We need a unique name in case of symbol versioning. */ | |
31 | # define setjmp __v1setjmp | |
32 | # define _setjmp __v1_setjmp | |
33 | # define __sigsetjmp __v1__sigsetjmp | |
34 | #else | |
35 | # define NEED_COMPAT_SYMBOLS 0 | |
36 | #endif | |
ffeac417 | 37 | |
37d13b17 | 38 | /* We include the BSD entry points here as well. */ |
492e01c8 | 39 | ENTRY (setjmp) |
37d13b17 SL |
40 | lghi %r3,1 /* Second argument of one. */ |
41 | j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */ | |
492e01c8 AJ |
42 | END (setjmp) |
43 | ||
44 | /* Binary compatibility entry point. */ | |
45 | ENTRY(_setjmp) | |
37d13b17 SL |
46 | slgr %r3,%r3 /* Second argument of zero. */ |
47 | j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */ | |
93a45ff1 | 48 | END (_setjmp) |
001f81ad FW |
49 | #if NEED_COMPAT_SYMBOLS |
50 | strong_alias (_setjmp, __GI__setjmp) | |
51 | #else | |
492e01c8 | 52 | libc_hidden_def (_setjmp) |
001f81ad | 53 | #endif |
492e01c8 AJ |
54 | |
55 | ENTRY(__setjmp) | |
37d13b17 SL |
56 | slgr %r3,%r3 /* Second argument of zero. */ |
57 | j .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp. */ | |
93a45ff1 | 58 | END (__setjmp) |
ffeac417 UD |
59 | |
60 | ENTRY(__sigsetjmp) | |
2f438e20 | 61 | .Linternal_sigsetjmp: |
53244a4e SL |
62 | /* setjmp probe expects sig/setjmp first argument (8@%r2), second |
63 | argument (-8@%r3) and target address (8@%r14). */ | |
64 | LIBC_PROBE (setjmp, 3, 8@%r2, -4@%r3, 8@%r14) | |
00c2b3b9 UD |
65 | #ifdef PTR_MANGLE |
66 | stmg %r6,%r13,0(%r2) /* Store registers in jmp_buf. */ | |
67 | lgr %r4,%r14 | |
305bb37e UD |
68 | lgr %r5,%r15 |
69 | PTR_MANGLE (%r4, %r1) | |
70 | PTR_MANGLE2 (%r5, %r1) | |
71 | stmg %r4,%r5,64(%r2) | |
00c2b3b9 | 72 | #else |
37d13b17 | 73 | stmg %r6,%r15,0(%r2) /* Store registers in jmp_buf. */ |
00c2b3b9 | 74 | #endif |
bc101e26 AK |
75 | std %f8,80(%r2) |
76 | std %f9,88(%r2) | |
77 | std %f10,96(%r2) | |
78 | std %f11,104(%r2) | |
79 | std %f12,112(%r2) | |
80 | std %f13,120(%r2) | |
81 | std %f14,128(%r2) | |
82 | std %f15,136(%r2) | |
a3848485 | 83 | #if IS_IN (rtld) |
00c2b3b9 UD |
84 | /* In ld.so we never save the signal mask. */ |
85 | lghi %r2,0 | |
86 | br %r14 | |
87 | #elif defined PIC | |
37d13b17 | 88 | jg __sigjmp_save@PLT /* Branch to PLT of __sigsetjmp. */ |
ffeac417 | 89 | #else |
492e01c8 | 90 | jg __sigjmp_save |
847b055c | 91 | #endif |
ffeac417 | 92 | END (__sigsetjmp) |
001f81ad FW |
93 | #if NEED_COMPAT_SYMBOLS |
94 | strong_alias (__sigsetjmp, __GI___sigsetjmp) | |
95 | #else | |
96 | libc_hidden_def (__sigsetjmp) | |
97 | #endif | |
2f438e20 | 98 | |
001f81ad | 99 | #if NEED_COMPAT_SYMBOLS |
2f438e20 SL |
100 | /* In glibc release 2.19 new versions of setjmp-functions were introduced, |
101 | but were reverted before 2.20. Thus both versions are the same function. */ | |
102 | ||
001f81ad FW |
103 | # undef setjmp |
104 | # undef _setjmp | |
105 | # undef __sigsetjmp | |
2f438e20 | 106 | |
37d13b17 | 107 | strong_alias (__v1setjmp, __v2setjmp); |
2f438e20 SL |
108 | versioned_symbol (libc, __v1setjmp, setjmp, GLIBC_2_0); |
109 | compat_symbol (libc, __v2setjmp, setjmp, GLIBC_2_19); | |
110 | ||
37d13b17 | 111 | strong_alias (__v1_setjmp, __v2_setjmp); |
2f438e20 SL |
112 | versioned_symbol (libc, __v1_setjmp, _setjmp, GLIBC_2_0); |
113 | compat_symbol (libc, __v2_setjmp, _setjmp, GLIBC_2_19); | |
114 | ||
115 | strong_alias (__v1__sigsetjmp, __v2__sigsetjmp); | |
116 | versioned_symbol (libc, __v1__sigsetjmp, __sigsetjmp, GLIBC_2_0); | |
117 | compat_symbol (libc, __v2__sigsetjmp, __sigsetjmp, GLIBC_2_19); | |
001f81ad | 118 | #endif /* NEED_COMPAT_SYMBOLS */ |