asm.h revision 1.15
1 /* $NetBSD: asm.h,v 1.15 1997/10/04 17:34:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1994 Allen Briggs 41 * All rights reserved. 42 * 43 * Gleaned from locore.s and sun3 asm.h which had the following copyrights: 44 * locore.s: 45 * Copyright (c) 1988 University of Utah. 46 * Copyright (c) 1982, 1990 The Regents of the University of California. 47 * sun3/include/asm.h: 48 * Copyright (c) 1993 Adam Glass 49 * Copyright (c) 1990 The Regents of the University of California. 50 * 51 * Redistribution and use in source and binary forms, with or without 52 * modification, are permitted provided that the following conditions 53 * are met: 54 * 1. Redistributions of source code must retain the above copyright 55 * notice, this list of conditions and the following disclaimer. 56 * 2. Redistributions in binary form must reproduce the above copyright 57 * notice, this list of conditions and the following disclaimer in the 58 * documentation and/or other materials provided with the distribution. 59 * 3. All advertising materials mentioning features or use of this software 60 * must display the following acknowledgement: 61 * This product includes software developed by the University of 62 * California, Berkeley and its contributors. 63 * 4. Neither the name of the University nor the names of its contributors 64 * may be used to endorse or promote products derived from this software 65 * without specific prior written permission. 66 * 67 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 68 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 69 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 70 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 71 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 72 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 73 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 74 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 75 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 76 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 77 * SUCH DAMAGE. 78 */ 79 80 #ifndef _ASM_H_ 81 #define _ASM_H_ 82 83 #ifdef __STDC__ 84 #define _C_LABEL(name) _ ## name 85 #else 86 #define _C_LABEL(name) _/**/name 87 #endif /* __STDC__ */ 88 89 #define _ASM_LABEL(name) name 90 91 #define _ENTRY(name) \ 92 .text; .even; .globl name; .type name,@function; name: 93 94 #ifdef GPROF 95 #define _PROF_PROLOG link a6,#0; jbsr mcount; unlk a6 96 #else 97 #define _PROF_PROLOG 98 #endif 99 100 #define ENTRY(name) _ENTRY(_C_LABEL(name)) _PROF_PROLOG 101 #define ASENTRY(name) _ENTRY(_ASM_LABEL(name)) _PROF_PROLOG 102 103 #define ENTRY_NOPROFILE(name) _ENTRY(_C_LABEL(name)) 104 #define ASENTRY_NOPROFILE(name) _ENTRY(_ASM_LABEL(name)) 105 106 /* 107 * The m68k ALTENTRY macro is very different than the traditional 108 * implementation used by other NetBSD ports. Usually ALTENTRY 109 * simply provides an alternate function entry point. The m68k 110 * definition takes a second argument and jumps inside the second 111 * function when profiling is enabled. 112 * 113 * The m68k behavior is similar to the ENTRY2 macro found in 114 * solaris' asm_linkage.h. 115 * 116 * Providing ENTRY2 and changing all the code that uses ALTENTRY 117 * to use it would be a desirable change. 118 */ 119 #ifdef PROF 120 #define ALTENTRY(name, rname) ENTRY(name); jra rname+12 121 #else 122 #define ALTENTRY(name, rname) _ENTRY(_C_LABEL(name)) 123 #endif 124 125 #define RCSID(x) .text ; \ 126 .asciz x ; \ 127 .even 128 129 /* 130 * Global variables of whatever sort. 131 */ 132 #define GLOBAL(x) \ 133 .globl _C_LABEL(x) ; \ 134 _C_LABEL(x): 135 136 #define ASGLOBAL(x) \ 137 .globl _ASM_LABEL(x) ; \ 138 _ASM_LABEL(x): 139 140 /* 141 * ...and local variables. 142 */ 143 #define LOCAL(x) \ 144 _C_LABEL(x): 145 146 #define ASLOCAL(x) \ 147 _ASM_LABEL(x): 148 149 /* 150 * Items in the BSS segment. 151 */ 152 #define BSS(name, size) \ 153 .comm _C_LABEL(name),size 154 155 #define ASBSS(name, size) \ 156 .comm _ASM_LABEL(name),size 157 158 #ifdef _KERNEL 159 /* 160 * Shorthand for calling panic(). 161 * Note the side-effect: it uses up the 9: label, so be careful! 162 */ 163 #define PANIC(x) \ 164 pea 9f ; \ 165 jbsr _C_LABEL(panic) ; \ 166 9: .asciz x ; \ 167 .even 168 169 /* 170 * Shorthand for defining vectors for the vector table. 171 */ 172 #define VECTOR(x) \ 173 .long _C_LABEL(x) 174 175 #define ASVECTOR(x) \ 176 .long _ASM_LABEL(x) 177 178 #define VECTOR_UNUSED \ 179 .long 0 180 181 #endif /* _KERNEL */ 182 183 #endif /* _ASM_H_ */ 184
Indexes created Thu Oct 02 14:10:14 GMT 2025