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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef _LIBC_LINT_H
28#define	_LIBC_LINT_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34/* we need the following to pick up _LP64 */
35#include <sys/feature_tests.h>
36
37/*
38 * We must include "lint.h" as the first #include in all libc source files
39 * for the purpose of running lint over libc, else lint errors occur due to
40 * lint not knowing the details of the implementation of locales and stdio.
41 */
42#if defined(__lint)
43
44#include "mbstatet.h"
45#include "file64.h"
46
47#else
48
49/*
50 * Small optimization for callers of syscall() and __systemcall().
51 * This could/should be defined elsewhere, but here is a particularly
52 * attractive place since all source files in libc include "lint.h".
53 */
54#define	syscall		_syscall6
55#define	__systemcall	__systemcall6
56
57/*
58 * Shades of the old and deprecated "synonyms.h" file.
59 * Because of the awkward relationship between these functions:
60 *	memcmp()
61 *	memcpy()
62 *	memmove()
63 *	memset()
64 * and the sparc auxiliary filters:
65 *	/platform/.../lib/libc_psr.so.1
66 * we must be careful always to call the leading-underscore
67 * symbol names when calling from within libc itself.
68 *
69 * If an interposer interposes on these mem*() symbol names,
70 * and we call one of them from within a critical region in libc,
71 * we will end up in the interposer code while executing within
72 * the critical region.  Chaos can ensue.
73 *
74 * We try to avoid this by calling only the leading-underscore names.
75 * We hope that no interposer will interpose on the leading-underscore
76 * versions of these functions, else all hope is lost.
77 */
78
79#pragma	redefine_extname	memcmp		_memcmp
80#pragma	redefine_extname	memcpy		_memcpy
81#pragma	redefine_extname	memmove		_memmove
82#pragma	redefine_extname	memset		_memset
83
84#endif
85
86#ifdef __cplusplus
87}
88#endif
89
90#endif /* _LIBC_LINT_H */
91