asm.h revision 1.15
1 /* $NetBSD: asm.h,v 1.15 1999/01/14 18:45:46 castor 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 #ifdef GPROF 75 # if defined(_KERNEL) || defined(_LOCORE) 76 # define MCOUNT _KERN_MCOUNT 77 # else 78 # define MCOUNT .set noreorder; _KERN_MCOUNT ; .set reorder; 79 # endif 80 #else 81 #define MCOUNT 82 #endif 83 84 #ifdef __NO_LEADING_UNDERSCORES__ 85 # define _C_LABEL(x) x 86 #else 87 # ifdef __STDC__ 88 # define _C_LABEL(x) _ ## x 89 # else 90 # define _C_LABEL(x) _/**/x 91 # endif 92 #endif 93 94 #ifdef USE_AENT 95 #define AENT(x) \ 96 .aent x, 0 97 #else 98 #define AENT(x) 99 #endif 100 101 /* 102 * WARN_REFERENCES: create a warning if the specified symbol is referenced 103 * (ELF only, and thus, no leading underscores). 104 */ 105 #ifdef __ELF__ 106 #ifdef __STDC__ 107 #define WARN_REFERENCES(_sym,_msg) \ 108 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 109 #else 110 #define WARN_REFERENCES(_sym,_msg) \ 111 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 112 #endif /* __STDC__ */ 113 #endif /* __ELF__ */ 114 115 /* 116 * LEAF 117 * A leaf routine does 118 * - call no other function, 119 * - never use any register that callee-saved (S0-S8), and 120 * - not use any local stack storage. 121 */ 122 #define LEAF(x) \ 123 .globl _C_LABEL(x); \ 124 .ent _C_LABEL(x), 0; \ 125 _C_LABEL(x): ; \ 126 .frame sp, 0, ra; \ 127 MCOUNT 128 129 /* 130 * LEAF_NOPROFILE 131 * No profilable leaf routine. 132 */ 133 #define LEAF_NOPROFILE(x) \ 134 .globl _C_LABEL(x); \ 135 .ent _C_LABEL(x), 0; \ 136 _C_LABEL(x): ; \ 137 .frame sp, 0, ra 138 139 /* 140 * XLEAF 141 * declare alternate entry to leaf routine 142 */ 143 #define XLEAF(x) \ 144 .globl _C_LABEL(x); \ 145 .aent _C_LABEL(x),0; \ 146 _C_LABEL(x): 147 148 /* 149 * NESTED 150 * A function calls other functions and needs 151 * therefore stack space to save/restore registers. 152 */ 153 #define NESTED(x, fsize, retpc) \ 154 .globl _C_LABEL(x); \ 155 .ent _C_LABEL(x), 0; \ 156 _C_LABEL(x): ; \ 157 .frame sp, fsize, retpc; \ 158 MCOUNT 159 160 /* 161 * NESTED_NOPROFILE(x) 162 * No profilable nested routine. 163 */ 164 #define NESTED_NOPROFILE(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 * XNESTED 172 * declare alternate entry point to nested routine. 173 */ 174 #define XNESTED(x) \ 175 .globl _C_LABEL(x); \ 176 .aent _C_LABEL(x),0; \ 177 _C_LABEL(x): 178 179 /* 180 * END 181 * Mark end of a procedure. 182 */ 183 #define END(x) \ 184 .end _C_LABEL(x) 185 186 /* 187 * IMPORT -- import external symbol 188 */ 189 #define IMPORT(sym, size) \ 190 .extern sym,size 191 192 /* 193 * EXPORT -- export definition of symbol 194 */ 195 #define EXPORT(x) \ 196 .globl _C_LABEL(x); \ 197 _C_LABEL(x): 198 199 /* 200 * ALIAS 201 * Global alias for a function, or alternate entry point 202 */ 203 #define ALIAS(x) \ 204 .globl _C_LABEL(x); \ 205 _C_LABEL(x): 206 207 /* 208 * Macros to panic and printf from assembly language. 209 */ 210 #define PANIC(msg) \ 211 la a0, 9f; \ 212 jal _C_LABEL(panic); \ 213 MSG(msg) 214 215 #define PRINTF(msg) \ 216 la a0, 9f; \ 217 jal _C_LABEL(printf); \ 218 MSG(msg) 219 220 #define MSG(msg) \ 221 .rdata; \ 222 9: .asciiz msg; \ 223 .text 224 225 #define ASMSTR(str) \ 226 .asciiz str; \ 227 .align 3 228 229 /* 230 * XXX retain dialects XXX 231 */ 232 #define ALEAF(x) \ 233 .globl _C_LABEL(x); \ 234 AENT (_C_LABEL(x)) \ 235 _C_LABEL(x): 236 237 #define NLEAF(x) \ 238 .globl _C_LABEL(x); \ 239 .ent _C_LABEL(x), 0; \ 240 _C_LABEL(x): ; \ 241 .frame sp, 0, ra 242 243 #define NON_LEAF(x, fsize, retpc) \ 244 .globl _C_LABEL(x); \ 245 .ent _C_LABEL(x), 0; \ 246 _C_LABEL(x): ; \ 247 .frame sp, fsize, retpc; \ 248 MCOUNT 249 250 #define NNON_LEAF(x, fsize, retpc) \ 251 .globl _C_LABEL(x); \ 252 .ent _C_LABEL(x), 0; \ 253 _C_LABEL(x): ; \ 254 .frame sp, fsize, retpc 255 256 /* 257 * While it would be nice to be compatible with the SGI 258 * REG_L and REG_S macros, because they do not take parameters, it 259 * is impossible to use them with the _MIPS_SIM_ABIX32 model. 260 * 261 * These macros hide the use of mips3 instructions from the 262 * assembler to prevent the assembler from generating 64-bit style 263 * ABI calls. 264 */ 265 266 #if defined(_MIPS_BSD_SIM) && _MIPS_BSD_SIM_ != _MIPS_SIM_ABI32 267 #define REG_L ld 268 #define REG_S sd 269 #define REG_LI dli 270 #define REG_PROLOGUE .set push ; .set mips3 271 #define REG_EPILOGUE .set pop 272 #define SZREG 8 273 #else 274 #define REG_L lw 275 #define REG_S sw 276 #define REG_LI li 277 #define REG_PROLOGUE .set push 278 #define REG_EPILOGUE .set pop 279 #define SZREG 4 280 #endif /* _MIPS_BSD_SIM */ 281 282 #ifndef _KERNEL 283 #include <machine/pubassym.h> 284 #endif 285 286 #endif /* _MIPS_ASM_H */ 287
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