1 /* $NetBSD: SYS.h,v 1.15 2002/05/26 12:24:57 wiz 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 40 */ 41 42 #include <sys/syscall.h> 43 #include <machine/asm.h> 44 45 #ifdef __STDC__ 46 #define IMMEDIATE # 47 #define SYSTRAP(x) movl IMMEDIATE SYS_ ## x ## ,%d0; trap IMMEDIATE 0 48 #else 49 #define SYSTRAP(x) movl #SYS_/**/x,%d0; trap #0 50 #endif 51 52 #ifdef __ELF__ 53 #define CERROR _C_LABEL(__cerror) 54 #define CURBRK _C_LABEL(__curbrk) 55 #else 56 #define CERROR _ASM_LABEL(cerror) 57 #define CURBRK _ASM_LABEL(curbrk) 58 #endif 59 60 #define _SYSCALL_NOERROR(x,y) \ 61 ENTRY(x); \ 62 SYSTRAP(y) 63 64 #define _SYSCALL(x,y) \ 65 .even; \ 66 err: jra PIC_PLT(CERROR); \ 67 _SYSCALL_NOERROR(x,y); \ 68 jcs err 69 70 #define SYSCALL_NOERROR(x) \ 71 _SYSCALL_NOERROR(x,x) 72 73 #define SYSCALL(x) \ 74 _SYSCALL(x,x) 75 76 #define PSEUDO_NOERROR(x,y) \ 77 _SYSCALL_NOERROR(x,y); \ 78 rts 79 80 #define PSEUDO(x,y) \ 81 _SYSCALL(x,y); \ 82 rts 83 84 #define RSYSCALL_NOERROR(x) \ 85 PSEUDO_NOERROR(x,x) 86 87 #define RSYSCALL(x) \ 88 PSEUDO(x,x) 89 90 #ifdef WEAK_ALIAS 91 #define WSYSCALL(weak,strong) \ 92 WEAK_ALIAS(weak,strong); \ 93 PSEUDO(strong,weak) 94 #else 95 #define WSYSCALL(weak,strong) \ 96 PSEUDO(weak,weak) 97 #endif 98 99 #define ASMSTR .asciz 100 101 .globl CERROR 102