1 /* $NetBSD: SYS.h,v 1.25 2014/05/23 02:17:43 uebayasi Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * William Jolitz. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 64 */ 65 66 #include <machine/asm.h> 67 #include <sys/syscall.h> 68 69 #ifdef __STDC__ 70 #define _SYSNAM(x) $(SYS_ ## x) 71 #else 72 #define _SYSNAM(x) $(SYS_/**/x) 73 #endif 74 75 #define OSYSTRAP(x) \ 76 movl _SYSNAM(x),%eax ;\ 77 int $0x80 78 79 #ifdef I686_LIBC 80 #define SYSTRAP(x) \ 81 pushl %ebx ;\ 82 movl _SYSNAM(x),%eax ;\ 83 movl $123f,%edx ;\ 84 movl %esp,%ecx ;\ 85 sysenter ;\ 86 123: movl %ebx,%edx ;\ 87 popl %ebx 88 #else /* I686_LIBC */ 89 #define SYSTRAP(x) OSYSTRAP(x) 90 #endif /* I686_LIBC */ 91 92 #ifdef __ELF__ 93 #define CERROR _C_LABEL(__cerror) 94 #define CURBRK _C_LABEL(__curbrk) 95 #else 96 #define CERROR _ASM_LABEL(cerror) 97 #define CURBRK _ASM_LABEL(curbrk) 98 #endif 99 100 #define _SYSCALL_NOERROR(x,y) \ 101 ENTRY(x); \ 102 SYSTRAP(y) 103 104 #ifdef __PIC__ 105 #define _SYSCALL_ERR \ 106 PIC_PROLOGUE; \ 107 mov PIC_GOT(CERROR), %ecx; \ 108 PIC_EPILOGUE; \ 109 jmp *%ecx 110 #else 111 #define _SYSCALL_ERR \ 112 jmp CERROR 113 #endif 114 115 #define _SYSCALL(x,y) \ 116 .text; _ALIGN_TEXT; \ 117 2: _SYSCALL_ERR; \ 118 _SYSCALL_NOERROR(x,y); \ 119 jc 2b 120 121 #define SYSCALL_NOERROR(x) \ 122 _SYSCALL_NOERROR(x,x) 123 124 #define SYSCALL(x) \ 125 _SYSCALL(x,x) 126 127 #define PSEUDO_NOERROR(x,y) \ 128 _SYSCALL_NOERROR(x,y); \ 129 ret; \ 130 END(x) 131 132 #define PSEUDO(x,y) \ 133 _SYSCALL_NOERROR(x,y); \ 134 jc 2f; \ 135 ret; \ 136 2: _SYSCALL_ERR; \ 137 END(x) 138 139 #define RSYSCALL_NOERROR(x) \ 140 PSEUDO_NOERROR(x,x) 141 142 #define RSYSCALL(x) \ 143 PSEUDO(x,x) 144 145 #ifdef WEAK_ALIAS 146 #define WSYSCALL(weak,strong) \ 147 WEAK_ALIAS(weak,strong); \ 148 PSEUDO(strong,weak) 149 #else 150 #define WSYSCALL(weak,strong) \ 151 PSEUDO(weak,weak) 152 #endif 153 154 .globl CERROR 155
Indexes created Thu Sep 25 16:09:42 GMT 2025