2 * Copyright (c) 2002 Peter Grehan.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 /* $NetBSD: cerror.S,v 1.5 2000/01/27 14:58:48 kleink Exp $ */
28 #include <machine/asm.h>
29 __FBSDID("$FreeBSD$");
33 .globl HIDENAME(cerror)
37 * The __error() function is thread aware. For non-threaded
38 * programs and the initial threaded in threaded programs,
39 * it returns a pointer to the global errno variable.
41 ENTRY_NOPROF(HIDENAME(cerror))
43 std %r0,16(%r1) /* save lr */
44 stdu %r1,-64(%r1) /* allocate new stack frame */
47 mr %r31,%r3 /* stash errval in callee-saved register */
50 stw %r31,0(%r3) /* store errval into &errno */
60 .section .note.GNU-stack,"",%progbits