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 1.10 2011/01/23 14:08:53 joerg Exp $ 34 */ 35 36 #include <machine/asm.h> 37 #include <sys/syscall.h> 38 39 #ifdef __STDC__ 40 #define IMMEDIATE # 41 #define SYSTRAP(x) \ 42 mov.l 903f, r0; \ 43 trapa IMMEDIATE 0x80; \ 44 bra 904f; \ 45 nop; \ 46 .align 2; \ 47 903: .long (SYS_ ## x); \ 48 904: 49 #else 50 #define SYSTRAP(x) \ 51 mov.l 903f, r0; \ 52 trapa #0x80; \ 53 bra 904f; \ 54 nop; \ 55 .align 2; \ 56 903: .long (SYS_/**/x); \ 57 904: 58 #endif 59 60 #define _SYSCALL_NOERROR(x,y) \ 61 ENTRY(x); \ 62 SYSTRAP(y) 63 64 #ifdef PIC 65 66 #define JUMP_CERROR \ 67 mov r0, r4; \ 68 mov.l 912f, r1; \ 69 mova 912f, r0; \ 70 mov.l 913f, r2; \ 71 add r1, r0; \ 72 mov.l @(r0, r2), r3; \ 73 jmp @r3; \ 74 nop; \ 75 .align 2; \ 76 912: .long _GLOBAL_OFFSET_TABLE_; \ 77 913: .long PIC_GOT(cerror) 78 79 #else /* !PIC */ 80 81 #define JUMP_CERROR \ 82 mov.l 912f, r3; \ 83 jmp @r3; \ 84 mov r0, r4; \ 85 .align 2; \ 86 912: .long cerror 87 88 #endif /* !PIC */ 89 90 #define _SYSCALL(x,y) \ 91 .text; \ 92 911: JUMP_CERROR; \ 93 _SYSCALL_NOERROR(x,y); \ 94 bf 911b 95 96 #define SYSCALL_NOERROR(x) \ 97 _SYSCALL_NOERROR(x,x) 98 99 #define SYSCALL(x) \ 100 _SYSCALL(x,x) 101 102 #define PSEUDO_NOERROR(x,y) \ 103 _SYSCALL_NOERROR(x,y); \ 104 rts; \ 105 nop 106 107 #define PSEUDO(x,y) \ 108 _SYSCALL(x,y); \ 109 rts; \ 110 nop 111 112 #define RSYSCALL_NOERROR(x) \ 113 PSEUDO_NOERROR(x,x) 114 115 #define RSYSCALL(x) \ 116 PSEUDO(x,x) 117 118 #ifdef WEAK_ALIAS 119 #define WSYSCALL(weak,strong) \ 120 WEAK_ALIAS(weak,strong); \ 121 PSEUDO(strong,weak) 122 #else 123 #define WSYSCALL(weak,strong) \ 124 PSEUDO(weak,weak) 125 #endif 126 127 .globl cerror 128