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