1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
|
36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
37 *
38 * $FreeBSD: head/lib/libc/i386/SYS.h 87006 2001-11-27 20:51:26Z jhb $
|
36 * @(#)SYS.h 5.5 (Berkeley) 5/7/91
37 * $FreeBSD: head/lib/libc/i386/SYS.h 92991 2002-03-22 23:42:05Z obrien $ |
38 */
39
40#include <sys/syscall.h>
41#include <machine/asm.h>
42
43#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \
44 ENTRY(__CONCAT(__sys_,x)); \
45 .weak CNAME(x); \
46 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \
47 .weak CNAME(__CONCAT(_,x)); \
48 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
49 mov __CONCAT($SYS_,x),%eax; KERNCALL; jb 2b
50
51#define RSYSCALL(x) SYSCALL(x); ret
52
53#define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \
54 .weak CNAME(__CONCAT(_,x)); \
55 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
56 mov __CONCAT($SYS_,x),%eax; KERNCALL; ret
57
58/* gas messes up offset -- although we don't currently need it, do for BCS */
59#define LCALL(x,y) .byte 0x9a ; .long y; .word x
60
61#ifdef __ELF__
62#define KERNCALL int $0x80 /* Faster */
63#else
64#define KERNCALL LCALL(7,0) /* The old way */
65#endif
|