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 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 33 * $NetBSD: SYS.h,v 1.10 2007/11/23 07:36:05 dsl Exp $ 34 */ 35 36 #include <machine/asm.h> 37 #include <sys/syscall.h> 38 39 #ifdef __STDC__ 40 #define SYSTRAP(x) movl $(SYS_ ## x),%eax; movq %rcx, %r10; syscall 41 #else 42 #define SYSTRAP(x) movl $(SYS_/**/x),%eax; movq %rcx, %r10; syscall 43 #endif 44 45 #define CERROR _C_LABEL(__cerror) 46 #define CURBRK _C_LABEL(__curbrk) 47 48 #define _SYSCALL_NOERROR(x,y) \ 49 ENTRY(x); \ 50 SYSTRAP(y) 51 52 #ifdef PIC 53 #define _SYSCALL_ERR \ 54 mov PIC_GOT(CERROR), %rcx; \ 55 jmp *%rcx 56 #else 57 #define _SYSCALL_ERR \ 58 jmp CERROR 59 #endif 60 61 #define _SYSCALL(x,y) \ 62 .text; _ALIGN_TEXT; \ 63 2: _SYSCALL_ERR; \ 64 _SYSCALL_NOERROR(x,y); \ 65 jc 2b 66 67 #define SYSCALL_NOERROR(x) \ 68 _SYSCALL_NOERROR(x,x) 69 70 #define SYSCALL(x) \ 71 _SYSCALL(x,x) 72 73 #define PSEUDO_NOERROR(x,y) \ 74 _SYSCALL_NOERROR(x,y); \ 75 ret 76 77 #define PSEUDO(x,y) \ 78 _SYSCALL_NOERROR(x,y); \ 79 jc 2f; \ 80 ret; \ 81 2: _SYSCALL_ERR 82 83 #define RSYSCALL_NOERROR(x) \ 84 PSEUDO_NOERROR(x,x) 85 86 #define RSYSCALL(x) \ 87 PSEUDO(x,x) 88 89 #define WSYSCALL(weak,strong) \ 90 WEAK_ALIAS(weak,strong); \ 91 PSEUDO(strong,weak) 92 93 .globl CERROR 94