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
31 extern "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 #else
45 
46 #error Unsupported architecture.
47 
48 #endif
49 
50 /*
51  * ENTRY provides the standard procedure entry code and an easy way to
52  * insert the calls to mcount for profiling. ENTRY_NP is identical, but
53  * never calls mcount.
54  */
55 #define	ENTRY(x) \
56 	.text; \
57 	.align	ASM_ENTRY_ALIGN; \
58 	.globl	x; \
59 	.type	x, @function; \
60 x:
61 
62 /*
63  * ALTENTRY provides for additional entry points.
64  */
65 #define	ALTENTRY(x) \
66 	.globl x; \
67 	.type	x, @function; \
68 x:
69 
70 /*
71  * SET_SIZE trails a function and set the size for the ELF symbol table.
72  */
73 #define	SET_SIZE(x) \
74 	.size	x, [.-x]
75 
76 #endif /* _ASM */
77 
78 #ifdef	__cplusplus
79 }
80 #endif
81 
82 #endif	/* _IA32_SYS_ASM_LINKAGE_H */
83