SYS.h revision 126107
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 * @(#)SYS.h 5.5 (Berkeley) 5/7/91 37 * $FreeBSD: head/lib/libc/amd64/SYS.h 126107 2004-02-22 02:11:39Z peter $ 38 */ 39 40#include <sys/syscall.h> 41#include <machine/asm.h> 42 43#ifdef PIC 44#define RSYSCALL(x) 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($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ 50 2: movq PIC_GOT(HIDENAME(cerror)),%rcx; jmp *%rcx 51#else 52#define RSYSCALL(x) ENTRY(__CONCAT(__sys_,x)); \ 53 .weak CNAME(x); \ 54 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ 55 .weak CNAME(__CONCAT(_,x)); \ 56 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 57 mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ 58 2: jmp HIDENAME(cerror) 59#endif 60 61#define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ 62 .weak CNAME(__CONCAT(_,x)); \ 63 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 64 mov __CONCAT($SYS_,x),%rax; KERNCALL; ret 65 66#define KERNCALL movq %rcx, %r10; syscall 67