2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
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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.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
38 * $FreeBSD: src/lib/libc/i386/SYS.h,v 1.17.2.2 2002/10/15 19:46:46 fjoe Exp $
39 * $DragonFly: src/lib/libc/i386/SYS.h,v 1.5 2005/04/29 22:00:20 joerg Exp $
42 #include <sys/syscall.h>
45 #define PURESYSCALL(x) ENTRY(__CONCAT(_,x)); \
47 .set CNAME(x),CNAME(__CONCAT(_,x)); \
48 lea __CONCAT(SYS_,x),%eax; KERNCALL; ret
50 #define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \
51 ENTRY(__CONCAT(_,x)); \
53 .set CNAME(x),CNAME(__CONCAT(_,x)); \
54 lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
56 #define RSYSCALL(x) SYSCALL(x); ret
58 #define PSEUDO(x,y) ENTRY(__CONCAT(_,x)); \
60 .set CNAME(x),CNAME(__CONCAT(_,x)); \
61 lea __CONCAT(SYS_,y), %eax; KERNCALL; ret
63 /* gas messes up offset -- although we don't currently need it, do for BCS */
64 #define LCALL(x,y) .byte 0x9a ; .long y; .word x
69 * The macros PSYSCALL() and PRSYSCALL() are intended for use where a
70 * syscall needs to be renamed in the threaded library.
73 * For the thread_safe versions, we prepend __sys_ to the function
74 * name so that the 'C' wrapper can go around the real name.
76 #define PSYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \
77 ENTRY(__CONCAT(__sys_,x)); \
79 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \
80 .weak CNAME(__CONCAT(_,x)); \
81 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
82 lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
84 #define PRSYSCALL(x) PSYSCALL(x); ret
86 #define PPSEUDO(x,y) ENTRY(__CONCAT(__sys_,x)); \
88 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \
89 .weak CNAME(__CONCAT(_,x)); \
90 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
91 lea __CONCAT(SYS_,y), %eax; KERNCALL; ret
93 #define KERNCALL int $0x80