cerror.S revision 1.14 
1/*	$NetBSD: cerror.S,v 1.14 2025/05/03 19:57:13 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	from: @(#)cerror.s	5.1 (Berkeley) 4/23/90
32 */
33
34#include "SYS.h"
35
36ENTRY_NP(CERROR)
37#ifdef _REENTRANT
38#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
39	.fnstart
40	.cfi_startproc
41#endif
42	push	{r4, lr}
43#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
44	.save	{r4, lr}
45	.cfi_def_cfa_offset 8
46	.cfi_offset 14, -4
47	.cfi_offset 4, -8
48#endif
49	mov	r4, r0
50	bl	PLT_SYM(_C_LABEL(__errno))
51	str	r4, [r0]
52#ifdef __thumb__
53	movs	r0, #0
54	mvns	r0, r0
55#else
56	mvn	r0, #0
57#endif
58	mov	r1, r0
59	pop	{r4, pc}
60#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
61	.cfi_endproc
62	.fnend
63#endif
64#else /* !_REENTRANT */
65#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
66	.fnstart
67	.cfi_startproc
68#endif
69	GOT_INIT(r3, .Lgot, .LPIC0)
70	GOT_GET(r1, .Lgot, .Lerrno)
71	str	r0, [r1]
72#ifdef __thumb__
73	movs	r0, #0
74	mvns	r0, r0
75#else
76	mvn	r0, #0
77#endif /* __thumb__ */
78	mov	r1, r0
79	RET
80#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__)
81	.cfi_endproc
82	.fnend
83#endif
84
85	GOT_INITSYM(.Lgot, .LPIC0)
86	.globl	_C_LABEL(errno)
87.Lerrno:
88	.word	GOT_SYM(_C_LABEL(errno))
89#endif /* _REENTRANT */
90END(CERROR)
91