[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / s390 / s390-32 / __makecontext_ret.S

/* Copyright (C) 2012-2023 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
   <https://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
	ltr   %r8,%r8			/* Check whether uc_link is 0.  */
	jz    1f
	lr    %r2,%r8
	br    %r9
1:	lhi   %r2,0			/* EXIT return value.  */
#ifdef NO_HIDDEN
	/* If SHARED and NO_HIDDEN is defined, we need to setup got pointer
	   as HIDDEN_JUMPTARGET expands to JUMPTARGET which expands to
	   exit@PLT.  Otherwise HIDDEN_JUMPTARGET expands to __GI_exit if
	   SHARED is defined and to exit if SHARED is not defined.  */
	SYSCALL_PIC_SETUP
#endif
	basr	%r1,0
2:
	al	%r1,3f-2b(%r1)
	basr	%r14,%r1		/* Call exit.  */
	j	.+2			/* Trap if exit returns for some reason.  */
3:
	.long   HIDDEN_JUMPTARGET (exit) - 2b
END(__makecontext_ret)
Commit	Line	Data
6d7e8eda	1	/* Copyright (C) 2012-2023 Free Software Foundation, Inc.
46f85fc2 AK	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
5a82c748	16	<https://www.gnu.org/licenses/>. */
46f85fc2 AK	17
	18	#include <sysdep.h>
	19
	20	ENTRY(__makecontext_ret)
8beba15d SL	21	/* Mark r14 as undefined in order to stop unwinding here! */
8beba15d SL	22	cfi_undefined (r14)
46f85fc2 AK	23	basr %r14,%r7
	24	ltr %r8,%r8 /* Check whether uc_link is 0. */
	25	jz 1f
	26	lr %r2,%r8
	27	br %r9
	28	1: lhi %r2,0 /* EXIT return value. */
5e5b3b88 SL	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
46f85fc2	35	#endif
5e5b3b88 SL	36	basr %r1,0
	37	2:
	38	al %r1,3f-2b(%r1)
	39	basr %r14,%r1 /* Call exit. */
46f85fc2	40	j .+2 /* Trap if exit returns for some reason. */
5e5b3b88 SL	41	3:
5e5b3b88 SL	42	.long HIDDEN_JUMPTARGET (exit) - 2b
46f85fc2	43	END(__makecontext_ret)