1/* Copyright (C) 2001-2022 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#include <tls.h>
20
21
22/* The following code is only used in the shared library when we
23   compile the reentrant version.  Otherwise each system call defines
24   each own version.  */
25
26/* The syscall stubs jump here when they detect an error.  */
27
28#undef CALL_MCOUNT
29#define CALL_MCOUNT
30
31.text
32ENTRY(__syscall_error)
33#ifndef PIC
34# if IS_IN (libc)
35#  define SYSCALL_ERROR_ERRNO __libc_errno
36# else
37#  define SYSCALL_ERROR_ERRNO errno
38# endif
39	basr	%r1,0
400:	lg	%r1,1f-0b(%r1)
41	ear	%r3,%a0
42	sllg	%r3,%r3,32
43	ear	%r3,%a1
44	lcr	%r2,%r2
45	st	%r2,0(%r1,%r3)
46	lghi	%r2,-1
47	br	%r14
481:	.quad	SYSCALL_ERROR_ERRNO@ntpoff
49#else
50# if RTLD_PRIVATE_ERRNO
51	larl	%r1,rtld_errno
52	lcr	%r2,%r2
53	st	%r2,0(%r1)
54	lghi	%r2,-1
55	br	%r14
56# else
57#  if IS_IN (libc)
58#   define SYSCALL_ERROR_ERRNO __libc_errno
59#  else
60#   define SYSCALL_ERROR_ERRNO errno
61#  endif
62	larl	%r1,_GLOBAL_OFFSET_TABLE_
63	lg	%r1,SYSCALL_ERROR_ERRNO@gotntpoff(%r1)
64	ear	%r3,%a0
65	sllg	%r3,%r3,32
66	ear	%r3,%a1
67	lcr	%r2,%r2
68	st	%r2,0(%r1,%r3)
69	lghi	%r2,-1
70	br	%r14
71# endif
72#endif
73
74END (__syscall_error)
75