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 1.9 2006/01/06 06:19:20 uwe Exp $ 34 */ 35 36 #include <machine/asm.h> 37 #include <sys/syscall.h> 38 39 #ifdef __STDC__ 40 #define SYSTRAP(x) \ 41 mov.l 903f, r0; \ 42 .long 0xc380; /* trapa #0x80 */ \ 43 bra 904f; \ 44 nop; \ 45 .align 2; \ 46 903: .long (SYS_ ## x); \ 47 904: 48 #else 49 #define SYSTRAP(x) \ 50 mov.l 903f, r0; \ 51 trapa #0x80; \ 52 bra 904f; \ 53 nop; \ 54 .align 2; \ 55 903: .long (SYS_/**/x); \ 56 904: 57 #endif 58 59 #define _SYSCALL_NOERROR(x,y) \ 60 ENTRY(x); \ 61 SYSTRAP(y) 62 63 #ifdef PIC 64 65 #define JUMP_CERROR \ 66 mov r0, r4; \ 67 mov.l 912f, r1; \ 68 mova 912f, r0; \ 69 mov.l 913f, r2; \ 70 add r1, r0; \ 71 mov.l @(r0, r2), r3; \ 72 jmp @r3; \ 73 nop; \ 74 .align 2; \ 75 912: .long _GLOBAL_OFFSET_TABLE_; \ 76 913: .long PIC_GOT(cerror) 77 78 #else /* !PIC */ 79 80 #define JUMP_CERROR \ 81 mov.l 912f, r3; \ 82 jmp @r3; \ 83 mov r0, r4; \ 84 .align 2; \ 85 912: .long cerror 86 87 #endif /* !PIC */ 88 89 #define _SYSCALL(x,y) \ 90 .text; \ 91 911: JUMP_CERROR; \ 92 _SYSCALL_NOERROR(x,y); \ 93 bf 911b 94 95 #define SYSCALL_NOERROR(x) \ 96 _SYSCALL_NOERROR(x,x) 97 98 #define SYSCALL(x) \ 99 _SYSCALL(x,x) 100 101 #define PSEUDO_NOERROR(x,y) \ 102 _SYSCALL_NOERROR(x,y); \ 103 rts; \ 104 nop 105 106 #define PSEUDO(x,y) \ 107 _SYSCALL(x,y); \ 108 rts; \ 109 nop 110 111 #define RSYSCALL_NOERROR(x) \ 112 PSEUDO_NOERROR(x,x) 113 114 #define RSYSCALL(x) \ 115 PSEUDO(x,x) 116 117 #ifdef WEAK_ALIAS 118 #define WSYSCALL(weak,strong) \ 119 WEAK_ALIAS(weak,strong); \ 120 PSEUDO(strong,weak) 121 #else 122 #define WSYSCALL(weak,strong) \ 123 PSEUDO(weak,weak) 124 #endif 125 126 .globl cerror 127