asm.h revision 1.20
1 /* $NetBSD: asm.h,v 1.20 1999/03/30 16:50:04 soda 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)); \ 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)); \ 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 _C_LABEL(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 * VECTOR 201 * exception vector entrypoint 202 * XXX: regmask should be used to generate .mask 203 */ 204 #define VECTOR(x, regmask) \ 205 .ent _C_LABEL(x),0; \ 206 EXPORT(x); \ 207 208 #ifdef __STDC__ 209 #define VECTOR_END(x) \ 210 EXPORT(x ## End); \ 211 END(x) 212 #else 213 #define VECTOR_END(x) \ 214 EXPORT(x/**/End); \ 215 END(x) 216 #endif 217 218 /* 219 * Macros to panic and printf from assembly language. 220 */ 221 #define PANIC(msg) \ 222 la a0, 9f; \ 223 jal _C_LABEL(panic); \ 224 MSG(msg) 225 226 #define PRINTF(msg) \ 227 la a0, 9f; \ 228 jal _C_LABEL(printf); \ 229 MSG(msg) 230 231 #define MSG(msg) \ 232 .rdata; \ 233 9: .asciiz msg; \ 234 .text 235 236 #define ASMSTR(str) \ 237 .asciiz str; \ 238 .align 3 239 240 /* 241 * XXX retain dialects XXX 242 */ 243 #define ALEAF(x) XLEAF(x) 244 #define NLEAF(x) LEAF_NOPROFILE(x) 245 #define NON_LEAF(x, fsize, retpc) NESTED(x, fsize, retpc) 246 #define NNON_LEAF(x, fsize, retpc) NESTED_NOPROFILE(x, fsize, retpc) 247 248 /* 249 * standard callframe { 250 * register_t cf_args[4]; arg0 - arg3 251 * register_t cf_sp; frame pointer 252 * register_t cf_ra; return address 253 * }; 254 */ 255 #define CALLFRAME_SIZ (4 * (4 + 2)) 256 #define CALLFRAME_SP (4 * 4) 257 #define CALLFRAME_RA (4 * 5) 258 259 /* 260 * While it would be nice to be compatible with the SGI 261 * REG_L and REG_S macros, because they do not take parameters, it 262 * is impossible to use them with the _MIPS_SIM_ABIX32 model. 263 * 264 * These macros hide the use of mips3 instructions from the 265 * assembler to prevent the assembler from generating 64-bit style 266 * ABI calls. 267 */ 268 269 #if !defined(_MIPS_BSD_API) || _MIPS_BSD_API == _MIPS_BSD_API_LP32 270 #define REG_L lw 271 #define REG_S sw 272 #define REG_LI li 273 #define REG_PROLOGUE .set push 274 #define REG_EPILOGUE .set pop 275 #define SZREG 4 276 #else 277 #define REG_L ld 278 #define REG_S sd 279 #define REG_LI dli 280 #define REG_PROLOGUE .set push ; .set mips3 281 #define REG_EPILOGUE .set pop 282 #define SZREG 8 283 #endif /* _MIPS_BSD_API */ 284 285 #endif /* _MIPS_ASM_H */ 286
Indexes created Tue Sep 23 07:09:52 GMT 2025