1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*-
* Copyright (c) 2002 Peter Grehan.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $NetBSD: cerror.S,v 1.5 2000/01/27 14:58:48 kleink Exp $ */
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
#include "SYS.h"
.globl HIDENAME(cerror)
.globl CNAME(__error)
/*
* The __error() function is thread aware. For non-threaded
* programs and the initial threaded in threaded programs,
* it returns a pointer to the global errno variable.
*/
HIDENAME(cerror):
mflr %r0
stwu %r1,-20(%r1) /* allocate new stack frame */
stw %r0,24(%r1) /* and save lr, r31 */
stw %r31,12(%r1)
#ifdef __PIC__
stw %r30,8(%r1)
bcl 20,31,1f
1:
mflr %r30
addis %r30,%r30,_GLOBAL_OFFSET_TABLE_-1b@ha
addi %r30,%r30,_GLOBAL_OFFSET_TABLE_-1b@l
#endif
mr %r31,%r3 /* stash errval in callee-saved register */
bl PIC_PLT(CNAME(__error))
stw %r31,0(%r3) /* store errval into &errno */
lwz %r0,24(%r1)
lwz %r31,12(%r1)
#ifdef __PIC__
lwz %r30,8(%r1)
#endif
mtlr %r0
la %r1,20(%r1)
li %r3,-1
li %r4,-1
blr /* return to callers caller */
.section .note.GNU-stack,"",%progbits
|
