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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 37 * $NetBSD: SYS.h,v 1.4 2002/05/26 12:24:58 wiz Exp $ 38 */ 39 40 #include <machine/asm.h> 41 #include <sys/syscall.h> 42 43 #ifdef __STDC__ 44 #define SYSTRAP(x) \ 45 mov.l 903f, r0; \ 46 .long 0xc380; /* trapa #0x80 */ \ 47 nop; \ 48 bra 904f; \ 49 nop; \ 50 .align 2; \ 51 903: .long (SYS_ ## x); \ 52 904: 53 #else 54 #define SYSTRAP(x) \ 55 mov.l 903f, r0; \ 56 trapa #0x80; \ 57 nop; \ 58 bra 904f; \ 59 nop; \ 60 .align 2; \ 61 903: .long (SYS_/**/x); \ 62 904: 63 #endif 64 65 #define _SYSCALL_NOERROR(x,y) \ 66 ENTRY(x); \ 67 SYSTRAP(y) 68 69 #define _SYSCALL(x,y) \ 70 .text; \ 71 911: mov.l 912f, r3; \ 72 jmp @r3; \ 73 nop; \ 74 .align 2; \ 75 912: .long cerror; \ 76 _SYSCALL_NOERROR(x,y); \ 77 bf 911b; \ 78 nop 79 80 #define SYSCALL_NOERROR(x) \ 81 _SYSCALL_NOERROR(x,x) 82 83 #define SYSCALL(x) \ 84 _SYSCALL(x,x) 85 86 #define PSEUDO_NOERROR(x,y) \ 87 _SYSCALL_NOERROR(x,y); \ 88 rts; \ 89 nop 90 91 #define PSEUDO(x,y) \ 92 _SYSCALL(x,y); \ 93 rts; \ 94 nop 95 96 #define RSYSCALL_NOERROR(x) \ 97 PSEUDO_NOERROR(x,x) 98 99 #define RSYSCALL(x) \ 100 PSEUDO(x,x) 101 102 #ifdef WEAK_ALIAS 103 #define WSYSCALL(weak,strong) \ 104 WEAK_ALIAS(weak,strong); \ 105 PSEUDO(strong,weak) 106 #else 107 #define WSYSCALL(weak,strong) \ 108 PSEUDO(weak,weak) 109 #endif 110 111 .globl cerror 112