asm.h revision 1.17
1 /* $NetBSD: asm.h,v 1.17 1999/02/16 05:06:26 jonathan 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 # define _END_LABEL(x) x/**/End 92 # endif 93 #endif 94 95 #ifdef __STDC__ 96 # define _END_LABEL(x) x ## End 97 #else 98 # define _END_LABEL(x) x/**/End 99 #endif 100 101 #ifdef USE_AENT 102 #define AENT(x) \ 103 .aent x, 0 104 #else 105 #define AENT(x) 106 #endif 107 108 /* 109 * WARN_REFERENCES: create a warning if the specified symbol is referenced 110 * (ELF only, and thus, no leading underscores). 111 */ 112 #ifdef __ELF__ 113 #ifdef __STDC__ 114 #define WARN_REFERENCES(_sym,_msg) \ 115 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 116 #else 117 #define WARN_REFERENCES(_sym,_msg) \ 118 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 119 #endif /* __STDC__ */ 120 #endif /* __ELF__ */ 121 122 /* 123 * LEAF 124 * A leaf routine does 125 * - call no other function, 126 * - never use any register that callee-saved (S0-S8), and 127 * - not use any local stack storage. 128 */ 129 #define LEAF(x) \ 130 .globl _C_LABEL(x); \ 131 .ent _C_LABEL(x), 0; \ 132 _C_LABEL(x): ; \ 133 .frame sp, 0, ra; \ 134 MCOUNT 135 136 /* 137 * LEAF_NOPROFILE 138 * No profilable leaf routine. 139 */ 140 #define LEAF_NOPROFILE(x) \ 141 .globl _C_LABEL(x); \ 142 .ent _C_LABEL(x), 0; \ 143 _C_LABEL(x): ; \ 144 .frame sp, 0, ra 145 146 /* 147 * XLEAF 148 * declare alternate entry to leaf routine 149 */ 150 #define XLEAF(x) \ 151 .globl _C_LABEL(x); \ 152 .aent _C_LABEL(x),0; \ 153 _C_LABEL(x): 154 155 /* 156 * NESTED 157 * A function calls other functions and needs 158 * therefore stack space to save/restore registers. 159 */ 160 #define NESTED(x, fsize, retpc) \ 161 .globl _C_LABEL(x); \ 162 .ent _C_LABEL(x), 0; \ 163 _C_LABEL(x): ; \ 164 .frame sp, fsize, retpc; \ 165 MCOUNT 166 167 /* 168 * NESTED_NOPROFILE(x) 169 * No profilable nested routine. 170 */ 171 #define NESTED_NOPROFILE(x, fsize, retpc) \ 172 .globl _C_LABEL(x); \ 173 .ent _C_LABEL(x), 0; \ 174 _C_LABEL(x): ; \ 175 .frame sp, fsize, retpc 176 177 /* 178 * XNESTED 179 * declare alternate entry point to nested routine. 180 */ 181 #define XNESTED(x) \ 182 .globl _C_LABEL(x); \ 183 .aent _C_LABEL(x),0; \ 184 _C_LABEL(x): 185 186 /* 187 * END 188 * Mark end of a procedure. 189 */ 190 #define END(x) \ 191 .end _C_LABEL(x) 192 193 /* 194 * IMPORT -- import external symbol 195 */ 196 #define IMPORT(sym, size) \ 197 .extern sym,size 198 199 /* 200 * EXPORT -- export definition of symbol 201 */ 202 #define EXPORT(x) \ 203 .globl _C_LABEL(x); \ 204 _C_LABEL(x): 205 206 /* 207 * ALIAS 208 * Global alias for a function, or alternate entry point 209 */ 210 #define ALIAS(x) \ 211 .globl _C_LABEL(x); \ 212 _C_LABEL(x): 213 214 /* 215 * VECTOR 216 * exception vector entrypoint 217 */ 218 #define VECTOR(x, regmask) \ 219 .ent _C_LABEL(x),0; \ 220 EXPORT(x); \ 221 222 #define VECTOR_END(x) \ 223 .end _C_LABEL(x); \ 224 EXPORT(_END_LABEL(x)) 225 226 /* 227 * Macros to panic and printf from assembly language. 228 */ 229 #define PANIC(msg) \ 230 la a0, 9f; \ 231 jal _C_LABEL(panic); \ 232 MSG(msg) 233 234 #define PRINTF(msg) \ 235 la a0, 9f; \ 236 jal _C_LABEL(printf); \ 237 MSG(msg) 238 239 #define MSG(msg) \ 240 .rdata; \ 241 9: .asciiz msg; \ 242 .text 243 244 #define ASMSTR(str) \ 245 .asciiz str; \ 246 .align 3 247 248 /* 249 * XXX retain dialects XXX 250 */ 251 #define ALEAF(x) \ 252 .globl _C_LABEL(x); \ 253 AENT (_C_LABEL(x)) \ 254 _C_LABEL(x): 255 256 #define NLEAF(x) \ 257 .globl _C_LABEL(x); \ 258 .ent _C_LABEL(x), 0; \ 259 _C_LABEL(x): ; \ 260 .frame sp, 0, ra 261 262 #define NON_LEAF(x, fsize, retpc) \ 263 .globl _C_LABEL(x); \ 264 .ent _C_LABEL(x), 0; \ 265 _C_LABEL(x): ; \ 266 .frame sp, fsize, retpc; \ 267 MCOUNT 268 269 #define NNON_LEAF(x, fsize, retpc) \ 270 .globl _C_LABEL(x); \ 271 .ent _C_LABEL(x), 0; \ 272 _C_LABEL(x): ; \ 273 .frame sp, fsize, retpc 274 275 /* 276 * standard callframe { 277 * register_t cf_args[4]; arg0 - arg3 278 * register_t cf_sp; frame pointer 279 * register_t cf_ra; return address 280 * }; 281 */ 282 #define CALLFRAME_SIZ (4 * (4 + 2)) 283 #define CALLFRAME_SP (4 * 4) 284 #define CALLFRAME_RA (4 * 5) 285 286 /* 287 * While it would be nice to be compatible with the SGI 288 * REG_L and REG_S macros, because they do not take parameters, it 289 * is impossible to use them with the _MIPS_SIM_ABIX32 model. 290 * 291 * These macros hide the use of mips3 instructions from the 292 * assembler to prevent the assembler from generating 64-bit style 293 * ABI calls. 294 */ 295 296 #if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32 297 #define REG_L lw 298 #define REG_S sw 299 #define REG_LI li 300 #define REG_PROLOGUE .set push 301 #define REG_EPILOGUE .set pop 302 #define SZREG 4 303 #else 304 #define REG_L ld 305 #define REG_S sd 306 #define REG_LI dli 307 #define REG_PROLOGUE .set push ; .set mips3 308 #define REG_EPILOGUE .set pop 309 #define SZREG 8 310 #endif /* _MIPS_BSD_API */ 311 312 #endif /* _MIPS_ASM_H */ 313
Indexes created Wed Sep 24 05:09:52 GMT 2025