1/* Copyright (C) 1999-2022 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 <features.h>
20#include <tls.h>
21
22ENTRY(__syscall_error)
23#if RTLD_PRIVATE_ERRNO
24	/*
25	 * Note that the gp has to be set properly for this to work.
26	 * As long as all syscalls are in the same load unit
27	 * (executable or shared library) as this routine, we should
28	 * be fine.  Otherwise, we would have to first load the global
29	 * pointer register from __gp.
30	 */
31	addl	r2=@gprel(rtld_errno),gp
32	;;
33	st4	[r2]=r8
34	mov	r8=-1
35#else
36# if IS_IN (libc)
37#  define SYSCALL_ERROR_ERRNO __libc_errno
38# else
39#  define SYSCALL_ERROR_ERRNO errno
40# endif
41	addl	r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
42	ld8	r2=[r2]
43	mov	r3=r8;;
44	mov	r8=-1
45	add	r2=r2,r13;;
46	st4	[r2]=r3
47#endif
48	ret			// ret is #define'd in syscall.h!
49END(__syscall_error)
50
51ENTRY(__ia64_syscall)
52	mov r15=r37		/* syscall number */
53	break __IA64_BREAK_SYSCALL
54	cmp.eq p6,p0=-1,r10	/* r10 = -1 on error */
55(p6)	br.cond.spnt.few __syscall_error
56	ret
57PSEUDO_END(__ia64_syscall)
58