1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef _SYS_ASM_LINKAGE_H
28#define	_SYS_ASM_LINKAGE_H
29
30#ifdef	__cplusplus
31extern "C" {
32#endif
33
34#ifdef _ASM	/* The remainder of this file is only for assembly files */
35
36/*
37 * make annoying differences in assembler syntax go away
38 */
39
40#if defined(__i386__) || defined(__amd64__)
41
42#define	ASM_ENTRY_ALIGN	16
43
44#elif defined(__sparc64__)
45
46/* GCC uses 32-byte function alignment for UltraSPARC CPUs. */
47#define	ASM_ENTRY_ALIGN	32
48
49#else
50
51#error Unsupported architecture.
52
53#endif
54
55/*
56 * ENTRY provides the standard procedure entry code and an easy way to
57 * insert the calls to mcount for profiling. ENTRY_NP is identical, but
58 * never calls mcount.
59 */
60#define	ENTRY(x) \
61	.text; \
62	.align	ASM_ENTRY_ALIGN; \
63	.globl	x; \
64	.type	x, @function; \
65x:
66
67/*
68 * ALTENTRY provides for additional entry points.
69 */
70#define	ALTENTRY(x) \
71	.globl x; \
72	.type	x, @function; \
73x:
74
75/*
76 * SET_SIZE trails a function and set the size for the ELF symbol table.
77 */
78#define	SET_SIZE(x) \
79	.size	x, [.-x]
80
81#endif /* _ASM */
82
83#ifdef	__cplusplus
84}
85#endif
86
87#endif	/* _IA32_SYS_ASM_LINKAGE_H */
88