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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)SYS.h 5.5 (Berkeley) 5/7/91 33 * $FreeBSD: src/lib/libc/amd64/SYS.h,v 1.30 2008/11/02 01:10:54 peter Exp $ 34 */ 35 36 #include <sys/syscall.h> 37 #include <machine/asm.h> 38 39 #ifdef PIC 40 #define RSYSCALL(x) ENTRY(__CONCAT(__sys_,x)); \ 41 .weak CNAME(x); \ 42 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ 43 .weak CNAME(__CONCAT(_,x)); \ 44 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 45 mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ 46 2: movq PIC_GOT(HIDENAME(cerror)),%rcx; jmp *%rcx; \ 47 END(__CONCAT(__sys_,x)) 48 49 #define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ 50 .weak CNAME(__CONCAT(_,x)); \ 51 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 52 mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret ; \ 53 2: movq PIC_GOT(HIDENAME(cerror)),%rcx; jmp *%rcx; \ 54 END(__CONCAT(__sys_,x)) 55 #else 56 #define RSYSCALL(x) ENTRY(__CONCAT(__sys_,x)); \ 57 .weak CNAME(x); \ 58 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ 59 .weak CNAME(__CONCAT(_,x)); \ 60 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 61 mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ 62 2: jmp HIDENAME(cerror); \ 63 END(__CONCAT(__sys_,x)) 64 65 #define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ 66 .weak CNAME(__CONCAT(_,x)); \ 67 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 68 mov __CONCAT($SYS_,x),%rax; KERNCALL; jb 2f; ret; \ 69 2: jmp HIDENAME(cerror); \ 70 END(__CONCAT(__sys_,x)) 71 #endif 72 73 #define KERNCALL movq %rcx, %r10; syscall 74