1/* Copyright (C) 2001, 2003 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 Library General Public License as
6   published by the Free Software Foundation; either version 2 of the
7   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   Library General Public License for more details.
13
14   You should have received a copy of the GNU Library General Public
15   License along with the GNU C Library; see the file COPYING.LIB.  If not,
16   see <http://www.gnu.org/licenses/>.  */
17
18#include <features.h>
19#include "sysdep.h"
20
21/* The syscall stubs jump here when they detect an error, bot for PIC and
22   non-PIC.  */
23
24	.syntax	no_register_prefix
25
26ENTRY (__syscall_error)
27	neg.d	r10,r10
28
29#ifdef	__UCLIBC_HAS_THREADS__
30	subq	4,sp
31	move.d	r10,[sp]
32	subq	4,sp
33	move 	srp,[sp]
34
35	/* Note that __syscall_error is only visible within this library,
36	   and no-one passes it on as a pointer, so can assume that R0 (GOT
37	   pointer) is correctly set up.  */
38	PLTCALL	(__errno_location)
39
40	move	[sp+],srp
41	move.d	[sp+],r11
42	move.d	r11,[r10]
43
44#else /* not __UCLIBC_HAS_THREADS__ */
45#ifdef __arch_v32
46# ifdef __PIC__
47	addo.d	C_SYMBOL_NAME(errno:GOT),r0,acr
48	move.d	[acr],r9
49	move.d	r10,[r9]
50# else /* not __PIC__ */
51	lapc	C_SYMBOL_NAME(errno),acr
52	move.d	r10,[r9]
53# endif /* not __PIC__ */
54#else /* not __arch_v32 */
55# ifdef __PIC__
56	move.d	[r0+C_SYMBOL_NAME(errno:GOT)],r9
57	move.d  r10,[r9]
58# else
59	move.d	r10,[C_SYMBOL_NAME(errno)]
60# endif
61#endif /* not __arch_v32 */
62#endif /* __UCLIBC_HAS_THREADS__ */
63
64#ifdef __PIC__
65/* PIC callers are supposed to have R0 on stack, ready for us to restore.
66   Callers are only allowed from within this DSO, so the GOT in r0 is the
67   one we want to use.
68
69   (Don't use "ret" - it's a macro).   */
70
71	moveq	-1,r10
72	Ret
73	move.d	[sp+],r0
74#else
75	Ret
76	moveq	-1,r10
77#endif
78
79END (__syscall_error)
80