1/* Copyright (C) 2012-2024 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <sysdep.h>
19
20ENTRY(__makecontext_ret)
21 /* Mark r14 as undefined in order to stop unwinding here! */
22 cfi_undefined (r14)
23 basr %r14,%r7
24 ltr %r8,%r8 /* Check whether uc_link is 0. */
25 jz 1f
26 lr %r2,%r8
27 br %r9
281: lhi %r2,0 /* EXIT return value. */
29#ifdef NO_HIDDEN
30 /* If SHARED and NO_HIDDEN is defined, we need to setup got pointer
31 as HIDDEN_JUMPTARGET expands to JUMPTARGET which expands to
32 exit@PLT. Otherwise HIDDEN_JUMPTARGET expands to __GI_exit if
33 SHARED is defined and to exit if SHARED is not defined. */
34 SYSCALL_PIC_SETUP
35#endif
36 basr %r1,0
372:
38 al %r1,3f-2b(%r1)
39 basr %r14,%r1 /* Call exit. */
40 j .+2 /* Trap if exit returns for some reason. */
413:
42 .long HIDDEN_JUMPTARGET (exit) - 2b
43END(__makecontext_ret)
44

source code of glibc/sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S