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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 | /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle * Copyright (C) 1999 by Silicon Graphics, Inc. * Copyright (C) 2001 MIPS Technologies, Inc. * Copyright (C) 2002 Maciej W. Rozycki * * Some useful macros for MIPS assembler code * * Some of the routines below contain useless nops that will be optimized * away by gas in -O mode. These nops are however required to fill delay * slots in noreorder mode. */ #ifndef __ASM_ASM_H #define __ASM_ASM_H #include <asm/sgidefs.h> #ifndef CAT #ifdef __STDC__ #define __CAT(str1, str2) str1##str2 #else #define __CAT(str1, str2) str1/**/str2 #endif #define CAT(str1, str2) __CAT(str1, str2) #endif /* * PIC specific declarations * Not used for the kernel but here seems to be the right place. */ #ifdef __PIC__ #define CPRESTORE(register) \ .cprestore register #define CPADD(register) \ .cpadd register #define CPLOAD(register) \ .cpload register #else #define CPRESTORE(register) #define CPADD(register) #define CPLOAD(register) #endif /* * LEAF - declare leaf routine */ #define LEAF(symbol) \ .globl symbol; \ .align 2; \ .type symbol, @function; \ .ent symbol, 0; \ symbol: .frame sp, 0, ra /* * NESTED - declare nested routine entry point */ #define NESTED(symbol, framesize, rpc) \ .globl symbol; \ .align 2; \ .type symbol, @function; \ .ent symbol, 0; \ symbol: .frame sp, framesize, rpc /* * END - mark end of function */ #define END(function) \ .end function; \ .size function, .-function /* * EXPORT - export definition of symbol */ #define EXPORT(symbol) \ .globl symbol; \ symbol: /* * FEXPORT - export definition of a function symbol */ #define FEXPORT(symbol) \ .globl symbol; \ .type symbol, @function; \ symbol: /* * ABS - export absolute symbol */ #define ABS(symbol,value) \ .globl symbol; \ symbol = value #define PANIC(msg) \ .set push; \ .set reorder; \ PTR_LA a0, 8f; \ jal panic; \ 9: b 9b; \ .set pop; \ TEXT(msg) /* * Print formatted string */ #ifdef CONFIG_PRINTK #define PRINT(string) \ .set push; \ .set reorder; \ PTR_LA a0, 8f; \ jal printk; \ .set pop; \ TEXT(string) #else #define PRINT(string) #endif #define TEXT(msg) \ .pushsection .data; \ 8: .asciiz msg; \ .popsection; /* * Build text tables */ #define TTABLE(string) \ .pushsection .text; \ .word 1f; \ .popsection \ .pushsection .data; \ 1: .asciiz string; \ .popsection /* * MIPS IV pref instruction. * Use with .set noreorder only! * * MIPS IV implementations are free to treat this as a nop. The R5000 * is one of them. So we should have an option not to use this instruction. */ #ifdef CONFIG_CPU_HAS_PREFETCH #define PREF(hint,addr) \ .set push; \ .set mips4; \ pref hint, addr; \ .set pop #define PREFX(hint,addr) \ .set push; \ .set mips4; \ prefx hint, addr; \ .set pop #else /* !CONFIG_CPU_HAS_PREFETCH */ #define PREF(hint, addr) #define PREFX(hint, addr) #endif /* !CONFIG_CPU_HAS_PREFETCH */ /* * MIPS ISA IV/V movn/movz instructions and equivalents for older CPUs. */ #if (_MIPS_ISA == _MIPS_ISA_MIPS1) #define MOVN(rd, rs, rt) \ .set push; \ .set reorder; \ beqz rt, 9f; \ move rd, rs; \ .set pop; \ 9: #define MOVZ(rd, rs, rt) \ .set push; \ .set reorder; \ bnez rt, 9f; \ move rd, rs; \ .set pop; \ 9: #endif /* _MIPS_ISA == _MIPS_ISA_MIPS1 */ #if (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3) #define MOVN(rd, rs, rt) \ .set push; \ .set noreorder; \ bnezl rt, 9f; \ move rd, rs; \ .set pop; \ 9: #define MOVZ(rd, rs, rt) \ .set push; \ .set noreorder; \ beqzl rt, 9f; \ move rd, rs; \ .set pop; \ 9: #endif /* (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3) */ #if (_MIPS_ISA == _MIPS_ISA_MIPS4 ) || (_MIPS_ISA == _MIPS_ISA_MIPS5) || \ (_MIPS_ISA == _MIPS_ISA_MIPS32) || (_MIPS_ISA == _MIPS_ISA_MIPS64) #define MOVN(rd, rs, rt) \ movn rd, rs, rt #define MOVZ(rd, rs, rt) \ movz rd, rs, rt #endif /* MIPS IV, MIPS V, MIPS32 or MIPS64 */ /* * Stack alignment */ #if (_MIPS_SIM == _MIPS_SIM_ABI32) #define ALSZ 7 #define ALMASK ~7 #endif #if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64) #define ALSZ 15 #define ALMASK ~15 #endif /* * Macros to handle different pointer/register sizes for 32/64-bit code */ /* * Size of a register */ #ifdef __mips64 #define SZREG 8 #else #define SZREG 4 #endif /* * Use the following macros in assemblercode to load/store registers, * pointers etc. */ #if (_MIPS_SIM == _MIPS_SIM_ABI32) #define REG_S sw #define REG_L lw #define REG_SUBU subu #define REG_ADDU addu #endif #if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64) #define REG_S sd #define REG_L ld #define REG_SUBU dsubu #define REG_ADDU daddu #endif /* * How to add/sub/load/store/shift C int variables. */ #if (_MIPS_SZINT == 32) #define INT_ADD add #define INT_ADDU addu #define INT_ADDI addi #define INT_ADDIU addiu #define INT_SUB sub #define INT_SUBU subu #define INT_L lw #define INT_S sw #define INT_SLL sll #define INT_SLLV sllv #define INT_SRL srl #define INT_SRLV srlv #define INT_SRA sra #define INT_SRAV srav #endif #if (_MIPS_SZINT == 64) #define INT_ADD dadd #define INT_ADDU daddu #define INT_ADDI daddi #define INT_ADDIU daddiu #define INT_SUB dsub #define INT_SUBU dsubu #define INT_L ld #define INT_S sd #define INT_SLL dsll #define INT_SLLV dsllv #define INT_SRL dsrl #define INT_SRLV dsrlv #define INT_SRA dsra #define INT_SRAV dsrav #endif /* * How to add/sub/load/store/shift C long variables. */ #if (_MIPS_SZLONG == 32) #define LONG_ADD add #define LONG_ADDU addu #define LONG_ADDI addi #define LONG_ADDIU addiu #define LONG_SUB sub #define LONG_SUBU subu #define LONG_L lw #define LONG_S sw #define LONG_SLL sll #define LONG_SLLV sllv #define LONG_SRL srl #define LONG_SRLV srlv #define LONG_SRA sra #define LONG_SRAV srav #define LONG .word #define LONGSIZE 4 #define LONGMASK 3 #define LONGLOG 2 #endif #if (_MIPS_SZLONG == 64) #define LONG_ADD dadd #define LONG_ADDU daddu #define LONG_ADDI daddi #define LONG_ADDIU daddiu #define LONG_SUB dsub #define LONG_SUBU dsubu #define LONG_L ld #define LONG_S sd #define LONG_SLL dsll #define LONG_SLLV dsllv #define LONG_SRL dsrl #define LONG_SRLV dsrlv #define LONG_SRA dsra #define LONG_SRAV dsrav #define LONG .dword #define LONGSIZE 8 #define LONGMASK 7 #define LONGLOG 3 #endif /* * How to add/sub/load/store/shift pointers. */ #if (_MIPS_SZPTR == 32) #define PTR_ADD add #define PTR_ADDU addu #define PTR_ADDI addi #define PTR_ADDIU addiu #define PTR_SUB sub #define PTR_SUBU subu #define PTR_L lw #define PTR_S sw #define PTR_LA la #define PTR_LI li #define PTR_SLL sll #define PTR_SLLV sllv #define PTR_SRL srl #define PTR_SRLV srlv #define PTR_SRA sra #define PTR_SRAV srav #define PTR_SCALESHIFT 2 #define PTR .word #define PTRSIZE 4 #define PTRLOG 2 #endif #if (_MIPS_SZPTR == 64) #define PTR_ADD dadd #define PTR_ADDU daddu #define PTR_ADDI daddi #define PTR_ADDIU daddiu #define PTR_SUB dsub #define PTR_SUBU dsubu #define PTR_L ld #define PTR_S sd #define PTR_LA dla #define PTR_LI dli #define PTR_SLL dsll #define PTR_SLLV dsllv #define PTR_SRL dsrl #define PTR_SRLV dsrlv #define PTR_SRA dsra #define PTR_SRAV dsrav #define PTR_SCALESHIFT 3 #define PTR .dword #define PTRSIZE 8 #define PTRLOG 3 #endif /* * Some cp0 registers were extended to 64bit for MIPS III. */ #if (_MIPS_SIM == _MIPS_SIM_ABI32) #define MFC0 mfc0 #define MTC0 mtc0 #endif #if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64) #define MFC0 dmfc0 #define MTC0 dmtc0 #endif #define SSNOP sll zero, zero, 1 #ifdef CONFIG_SGI_IP28 /* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */ #include <asm/cacheops.h> #define R10KCBARRIER(addr) cache Cache_Barrier, addr; #else #define R10KCBARRIER(addr) #endif #endif /* __ASM_ASM_H */ |