asm.h revision 1.14
1 /* $NetBSD: asm.h,v 1.14 1998/12/02 00:58:43 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 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 University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)machAsmDefs.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 /* 42 * machAsmDefs.h -- 43 * 44 * Macros used when writing assembler programs. 45 * 46 * Copyright (C) 1989 Digital Equipment Corporation. 47 * Permission to use, copy, modify, and distribute this software and 48 * its documentation for any purpose and without fee is hereby granted, 49 * provided that the above copyright notice appears in all copies. 50 * Digital Equipment Corporation makes no representations about the 51 * suitability of this software for any purpose. It is provided "as is" 52 * without express or implied warranty. 53 * 54 * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h, 55 * v 1.2 89/08/15 18:28:24 rab Exp SPRITE (DECWRL) 56 */ 57 58 #ifndef _MIPS_ASM_H 59 #define _MIPS_ASM_H 60 61 #include <machine/regdef.h> 62 63 /* 64 * Define -pg profile entry code. 65 * XXX assume .set noreorder for kernel, .set reorder for user code. 66 */ 67 #define _KERN_MCOUNT \ 68 .set noat; \ 69 move $1,$31; \ 70 jal _mcount; \ 71 subu sp,sp,8; \ 72 .set at; 73 74 75 #ifdef GPROF 76 # if defined(_KERNEL) || defined(_LOCORE) 77 # define MCOUNT _KERN_MCOUNT 78 # else 79 # define MCOUNT .set noreorder; _KERN_MCOUNT ; .set reorder; 80 # endif 81 #else 82 #define MCOUNT 83 #endif 84 85 #ifdef __NO_LEADING_UNDERSCORES__ 86 # define _C_LABEL(x) x 87 #else 88 # ifdef __STDC__ 89 # define _C_LABEL(x) _ ## x 90 # else 91 # define _C_LABEL(x) _/**/x 92 # endif 93 #endif 94 95 /* 96 * WARN_REFERENCES: create a warning if the specified symbol is referenced 97 * (ELF only, and thus, no leading underscores). 98 */ 99 #ifdef __ELF__ 100 #ifdef __STDC__ 101 #define WARN_REFERENCES(_sym,_msg) \ 102 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 103 #else 104 #define WARN_REFERENCES(_sym,_msg) \ 105 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 106 #endif /* __STDC__ */ 107 #endif /* __ELF__ */ 108 109 /* 110 * LEAF(x) 111 * 112 * Declare a leaf routine. 113 */ 114 #define LEAF(x) \ 115 .globl _C_LABEL(x); \ 116 .ent _C_LABEL(x), 0; \ 117 _C_LABEL(x): ; \ 118 .frame sp, 0, ra; \ 119 MCOUNT 120 121 /* 122 * NLEAF(x) 123 * 124 * Declare a non-profiled leaf routine. 125 */ 126 #define NLEAF(x) \ 127 .globl _C_LABEL(x); \ 128 .ent _C_LABEL(x), 0; \ 129 _C_LABEL(x): ; \ 130 .frame sp, 0, ra 131 132 /* 133 * ALEAF -- declare alternate entry to a leaf routine. 134 */ 135 #ifdef USE_AENT 136 #define AENT(x) \ 137 .aent x, 0 138 #else 139 #define AENT(x) 140 #endif 141 #define ALEAF(x) \ 142 .globl _C_LABEL(x); \ 143 AENT (_C_LABEL(x)) \ 144 _C_LABEL(x): 145 146 /* 147 * NON_LEAF(x) 148 * 149 * Declare a non-leaf routine (a routine that makes other C calls). 150 */ 151 #define NON_LEAF(x, fsize, retpc) \ 152 .globl _C_LABEL(x); \ 153 .ent _C_LABEL(x), 0; \ 154 _C_LABEL(x): ; \ 155 .frame sp, fsize, retpc; \ 156 MCOUNT 157 158 /* 159 * NNON_LEAF(x) 160 * 161 * Declare a non-profiled non-leaf routine 162 * (a routine that makes other C calls). 163 */ 164 #define NNON_LEAF(x, fsize, retpc) \ 165 .globl _C_LABEL(x); \ 166 .ent _C_LABEL(x), 0; \ 167 _C_LABEL(x): ; \ 168 .frame sp, fsize, retpc 169 170 /* 171 * END(x) 172 * 173 * Mark end of a procedure. 174 */ 175 #define END(x) \ 176 .end _C_LABEL(x) 177 178 #define STAND_FRAME_SIZE 24 179 #define STAND_RA_OFFSET 20 180 181 /* 182 * Macros to panic and printf from assembly language. 183 */ 184 #define PANIC(msg) \ 185 la a0, 9f; \ 186 jal _C_LABEL(panic); \ 187 MSG(msg) 188 189 #define PRINTF(msg) \ 190 la a0, 9f; \ 191 jal _C_LABEL(printf); \ 192 MSG(msg) 193 194 #define MSG(msg) \ 195 .rdata; \ 196 9: .asciiz msg; \ 197 .text 198 199 #define ASMSTR(str) \ 200 .asciiz str; \ 201 .align 3 202 203 #endif /* _MIPS_ASM_H */ 204
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