summaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S
blob: d50115d7ad42bf1c533f1898b2064f4b0bb56daa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
/* Copyright (C) 2012-2018 Free Software Foundation, Inc.
   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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

ENTRY(__makecontext_ret)
	/* Mark r14 as undefined in order to stop unwinding here!  */
	cfi_undefined (r14)
	basr	%r14,%r7
	ltgr	%r8,%r8			/* Check whether uc_link is 0.  */
	jz	1f
	lgr	%r2,%r8
	br	%r9
1:	lghi	%r2,0
	brasl	%r14,HIDDEN_JUMPTARGET (exit)
	j	.+2			/* Trap if exit returns.  */
END(__makecontext_ret)