1/*        $NetBSD: cerror.S,v 1.11 2013/09/12 15:36:16 joerg Exp $    */
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *        from: @(#)cerror.s  5.1 (Berkeley) 4/23/90
35 */
36
37#include <machine/asm.h>
38#if defined(SYSLIBC_SCCS) && !defined(lint)
39          RCSID("$NetBSD: cerror.S,v 1.11 2013/09/12 15:36:16 joerg Exp $")
40#endif /* SYSLIBC_SCCS and not lint */
41
42#include "SYS.h"
43
44#ifdef _REENTRANT
45
46
47          .globl    _C_LABEL(__errno)
48
49          .align    2
50cerror:
51          mov.l     .L___errno, r1
52          PIC_PROLOGUE(.L_got)
53          sts.l   pr, @-sp
541:        CALL      r1
55           mov.l    r4, @-sp  ! save error code
56          mov.l     @sp+, r4
57          lds.l   @sp+, pr
58          PIC_EPILOGUE
59          mov.l     r4, @r0
60          mov       #-1, r1
61          rts
62           mov      #-1, r0
63
64          .align    2
65.L_got:             PIC_GOT_DATUM
66.L___errno:         CALL_DATUM(_C_LABEL(__errno), 1b)
67          SET_ASENTRY_SIZE(cerror)
68
69#else /* !_REENTRANT */
70
71
72          .globl    _C_LABEL(errno)
73
74          .align    2
75cerror:
76#ifdef __PIC__
77          mova      L_GOT, r0
78          mov.l     L_GOT, r1
79          add       r0, r1
80          mov.l     L_errno, r0
81          mov.l     @(r0, r1), r1
82          mov.l     r4, @r1
83#else
84          mov.l     L_errno, r1
85          mov.l     r4, @r1
86#endif
87          mov       #-1, r0
88          rts
89           mov      #-1, r1
90
91          .align    2
92#ifdef __PIC__
93L_GOT:              .long     _GLOBAL_OFFSET_TABLE_
94L_errno:  .long     _C_LABEL(errno)@GOT
95#else
96L_errno:  .long     _C_LABEL(errno)
97#endif
98
99#endif /* !_REENTRANT */
100