1 /* $NetBSD: SYS.h,v 1.16 2003/08/07 16:42:09 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 36 */ 37 38 #include <sys/syscall.h> 39 #include <machine/asm.h> 40 41 #ifdef __STDC__ 42 #define IMMEDIATE # 43 #define SYSTRAP(x) movl IMMEDIATE SYS_ ## x ## ,%d0; trap IMMEDIATE 0 44 #else 45 #define SYSTRAP(x) movl #SYS_/**/x,%d0; trap #0 46 #endif 47 48 #ifdef __ELF__ 49 #define CERROR _C_LABEL(__cerror) 50 #define CURBRK _C_LABEL(__curbrk) 51 #else 52 #define CERROR _ASM_LABEL(cerror) 53 #define CURBRK _ASM_LABEL(curbrk) 54 #endif 55 56 #define _SYSCALL_NOERROR(x,y) \ 57 ENTRY(x); \ 58 SYSTRAP(y) 59 60 #define _SYSCALL(x,y) \ 61 .even; \ 62 err: jra PIC_PLT(CERROR); \ 63 _SYSCALL_NOERROR(x,y); \ 64 jcs err 65 66 #define SYSCALL_NOERROR(x) \ 67 _SYSCALL_NOERROR(x,x) 68 69 #define SYSCALL(x) \ 70 _SYSCALL(x,x) 71 72 #define PSEUDO_NOERROR(x,y) \ 73 _SYSCALL_NOERROR(x,y); \ 74 rts 75 76 #define PSEUDO(x,y) \ 77 _SYSCALL(x,y); \ 78 rts 79 80 #define RSYSCALL_NOERROR(x) \ 81 PSEUDO_NOERROR(x,x) 82 83 #define RSYSCALL(x) \ 84 PSEUDO(x,x) 85 86 #ifdef WEAK_ALIAS 87 #define WSYSCALL(weak,strong) \ 88 WEAK_ALIAS(weak,strong); \ 89 PSEUDO(strong,weak) 90 #else 91 #define WSYSCALL(weak,strong) \ 92 PSEUDO(weak,weak) 93 #endif 94 95 #define ASMSTR .asciz 96 97 .globl CERROR 98