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 1.12 2014/05/22 14:38:38 uebayasi 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 #define _SYSCALL_ERR \ 53 jmp CERROR 54 55 #define _SYSCALL(x,y) \ 56 .text; _ALIGN_TEXT; \ 57 2: _SYSCALL_ERR; \ 58 _SYSCALL_NOERROR(x,y); \ 59 jc 2b 60 61 #define SYSCALL_NOERROR(x) \ 62 _SYSCALL_NOERROR(x,x) 63 64 #define SYSCALL(x) \ 65 _SYSCALL(x,x) 66 67 #define PSEUDO_NOERROR(x,y) \ 68 _SYSCALL_NOERROR(x,y); \ 69 ret; \ 70 END(x) 71 72 #define PSEUDO(x,y) \ 73 _SYSCALL_NOERROR(x,y); \ 74 jc 2f; \ 75 ret; \ 76 2: _SYSCALL_ERR; \ 77 END(x) 78 79 #define RSYSCALL_NOERROR(x) \ 80 PSEUDO_NOERROR(x,x) 81 82 #define RSYSCALL(x) \ 83 PSEUDO(x,x) 84 85 #define WSYSCALL(weak,strong) \ 86 WEAK_ALIAS(weak,strong); \ 87 PSEUDO(strong,weak) 88 89 .globl CERROR 90