1 /* $NetBSD: SYS.h,v 1.10 2003/08/07 16:42:30 agc Exp $ */ 2 /* 3 * Copyright (c) 1983, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)SYS.h 8.1 (Berkeley) 6/4/93 31 */ 32 33 #include <machine/asm.h> 34 #include <sys/syscall.h> 35 36 #ifdef __STDC__ 37 #define SYSTRAP(x) chmk $ SYS_ ## x 38 #else 39 #define SYSTRAP(x) chmk $ SYS_/**/x 40 #endif 41 42 #define _SYSCALL_NOERROR(x,y) \ 43 ENTRY(x,0); \ 44 SYSTRAP(y) 45 46 #define _SYSCALL(x,y) \ 47 err: nop; nop; jmp CERROR+2; \ 48 _SYSCALL_NOERROR(x,y); \ 49 jcs err+2 50 51 #define SYSCALL_NOERROR(x) \ 52 _SYSCALL_NOERROR(x,x) 53 54 #define SYSCALL(x) \ 55 _SYSCALL(x,x) 56 57 #define PSEUDO_NOERROR(x,y) \ 58 _SYSCALL_NOERROR(x,y); \ 59 ret 60 61 #define PSEUDO(x,y) \ 62 _SYSCALL(x,y); \ 63 ret 64 65 #define RSYSCALL_NOERROR(x) \ 66 PSEUDO_NOERROR(x,x) 67 68 #define RSYSCALL(x) \ 69 PSEUDO(x,x) 70 71 #ifdef WEAK_ALIAS 72 #define WSYSCALL(weak,strong) \ 73 WEAK_ALIAS(weak,strong); \ 74 PSEUDO(strong,weak) 75 #else 76 #define WSYSCALL(weak,strong) \ 77 PSEUDO(weak,weak) 78 #endif 79 80 #define ASMSTR .asciz 81 82 #ifdef __ELF__ 83 #define CERROR _C_LABEL(__cerror) 84 #define CURBRK _C_LABEL(__curbrk) 85 #else 86 #define CERROR _ASM_LABEL(cerror) 87 #define CURBRK _ASM_LABEL(curbrk) 88 #endif 89 90 .globl CERROR 91