asm.h revision 1.42
1 /* $NetBSD: asm.h,v 1.42 2010/07/07 01:19:09 chs 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)machAsmDefs.h 8.1 (Berkeley) 6/10/93 35 */ 36 37 /* 38 * machAsmDefs.h -- 39 * 40 * Macros used when writing assembler programs. 41 * 42 * Copyright (C) 1989 Digital Equipment Corporation. 43 * Permission to use, copy, modify, and distribute this software and 44 * its documentation for any purpose and without fee is hereby granted, 45 * provided that the above copyright notice appears in all copies. 46 * Digital Equipment Corporation makes no representations about the 47 * suitability of this software for any purpose. It is provided "as is" 48 * without express or implied warranty. 49 * 50 * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h, 51 * v 1.2 89/08/15 18:28:24 rab Exp SPRITE (DECWRL) 52 */ 53 54 #ifndef _MIPS_ASM_H 55 #define _MIPS_ASM_H 56 57 #include <machine/cdefs.h> /* for API selection */ 58 #include <mips/regdef.h> 59 60 /* 61 * Define -pg profile entry code. 62 * Must always be noreorder, must never use a macro instruction 63 * Final addiu to t9 must always equal the size of this _KERN_MCOUNT 64 */ 65 #define _KERN_MCOUNT \ 66 .set push; \ 67 .set noreorder; \ 68 .set noat; \ 69 subu sp,sp,16; \ 70 sw t9,12(sp); \ 71 move AT,ra; \ 72 lui t9,%hi(_mcount); \ 73 addiu t9,t9,%lo(_mcount); \ 74 jalr t9; \ 75 nop; \ 76 lw t9,4(sp); \ 77 addiu sp,sp,8; \ 78 addiu t9,t9,40; \ 79 .set pop; 80 81 #ifdef GPROF 82 #define MCOUNT _KERN_MCOUNT 83 #else 84 #define MCOUNT 85 #endif 86 87 #ifdef __NO_LEADING_UNDERSCORES__ 88 # define _C_LABEL(x) x 89 #else 90 # ifdef __STDC__ 91 # define _C_LABEL(x) _ ## x 92 # else 93 # define _C_LABEL(x) _/**/x 94 # endif 95 #endif 96 97 #ifdef USE_AENT 98 #define AENT(x) \ 99 .aent x, 0 100 #else 101 #define AENT(x) 102 #endif 103 104 /* 105 * WEAK_ALIAS: create a weak alias. 106 */ 107 #define WEAK_ALIAS(alias,sym) \ 108 .weak alias; \ 109 alias = sym 110 /* 111 * STRONG_ALIAS: create a strong alias. 112 */ 113 #define STRONG_ALIAS(alias,sym) \ 114 .globl alias; \ 115 alias = sym 116 117 /* 118 * WARN_REFERENCES: create a warning if the specified symbol is referenced. 119 */ 120 #ifdef __STDC__ 121 #define WARN_REFERENCES(_sym,_msg) \ 122 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 123 #else 124 #define WARN_REFERENCES(_sym,_msg) \ 125 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 126 #endif /* __STDC__ */ 127 128 /* 129 * LEAF 130 * A leaf routine does 131 * - call no other function, 132 * - never use any register that callee-saved (S0-S8), and 133 * - not use any local stack storage. 134 */ 135 #define LEAF(x) \ 136 .globl _C_LABEL(x); \ 137 .ent _C_LABEL(x), 0; \ 138 _C_LABEL(x): ; \ 139 .frame sp, 0, ra; \ 140 MCOUNT 141 142 /* 143 * LEAF_NOPROFILE 144 * No profilable leaf routine. 145 */ 146 #define LEAF_NOPROFILE(x) \ 147 .globl _C_LABEL(x); \ 148 .ent _C_LABEL(x), 0; \ 149 _C_LABEL(x): ; \ 150 .frame sp, 0, ra 151 152 /* 153 * STATIC_LEAF 154 * Declare a local leaf function. 155 */ 156 #define STATIC_LEAF(x) \ 157 .ent _C_LABEL(x), 0; \ 158 _C_LABEL(x): ; \ 159 .frame sp, 0, ra; \ 160 MCOUNT 161 162 /* 163 * XLEAF 164 * declare alternate entry to leaf routine 165 */ 166 #define XLEAF(x) \ 167 .globl _C_LABEL(x); \ 168 AENT (_C_LABEL(x)); \ 169 _C_LABEL(x): 170 171 /* 172 * STATIC_XLEAF 173 * declare alternate entry to a static leaf routine 174 */ 175 #define STATIC_XLEAF(x) \ 176 AENT (_C_LABEL(x)); \ 177 _C_LABEL(x): 178 179 /* 180 * NESTED 181 * A function calls other functions and needs 182 * therefore stack space to save/restore registers. 183 */ 184 #define NESTED(x, fsize, retpc) \ 185 .globl _C_LABEL(x); \ 186 .ent _C_LABEL(x), 0; \ 187 _C_LABEL(x): ; \ 188 .frame sp, fsize, retpc; \ 189 MCOUNT 190 191 /* 192 * NESTED_NOPROFILE(x) 193 * No profilable nested routine. 194 */ 195 #define NESTED_NOPROFILE(x, fsize, retpc) \ 196 .globl _C_LABEL(x); \ 197 .ent _C_LABEL(x), 0; \ 198 _C_LABEL(x): ; \ 199 .frame sp, fsize, retpc 200 201 /* 202 * XNESTED 203 * declare alternate entry point to nested routine. 204 */ 205 #define XNESTED(x) \ 206 .globl _C_LABEL(x); \ 207 AENT (_C_LABEL(x)); \ 208 _C_LABEL(x): 209 210 /* 211 * END 212 * Mark end of a procedure. 213 */ 214 #define END(x) \ 215 .end _C_LABEL(x); \ 216 .size _C_LABEL(x), . - _C_LABEL(x) 217 218 /* 219 * IMPORT -- import external symbol 220 */ 221 #define IMPORT(sym, size) \ 222 .extern _C_LABEL(sym),size 223 224 /* 225 * EXPORT -- export definition of symbol 226 */ 227 #define EXPORT(x) \ 228 .globl _C_LABEL(x); \ 229 _C_LABEL(x): 230 231 /* 232 * VECTOR 233 * exception vector entrypoint 234 * XXX: regmask should be used to generate .mask 235 */ 236 #define VECTOR(x, regmask) \ 237 .ent _C_LABEL(x),0; \ 238 EXPORT(x); \ 239 240 #ifdef __STDC__ 241 #define VECTOR_END(x) \ 242 EXPORT(x ## End); \ 243 END(x) 244 #else 245 #define VECTOR_END(x) \ 246 EXPORT(x/**/End); \ 247 END(x) 248 #endif 249 250 /* 251 * Macros to panic and printf from assembly language. 252 */ 253 #define PANIC(msg) \ 254 PTR_LA a0, 9f; \ 255 jal _C_LABEL(panic); \ 256 nop; \ 257 MSG(msg) 258 259 #define PRINTF(msg) \ 260 PTR_LA a0, 9f; \ 261 jal _C_LABEL(printf); \ 262 nop; \ 263 MSG(msg) 264 265 #define MSG(msg) \ 266 .rdata; \ 267 9: .asciiz msg; \ 268 .text 269 270 #define ASMSTR(str) \ 271 .asciiz str; \ 272 .align 3 273 274 #define RCSID(name) .pushsection ".ident"; .asciz name; .popsection 275 276 /* 277 * XXX retain dialects XXX 278 */ 279 #define ALEAF(x) XLEAF(x) 280 #define NLEAF(x) LEAF_NOPROFILE(x) 281 #define NON_LEAF(x, fsize, retpc) NESTED(x, fsize, retpc) 282 #define NNON_LEAF(x, fsize, retpc) NESTED_NOPROFILE(x, fsize, retpc) 283 284 #if defined(__mips_o32) 285 #define SZREG 4 286 #else 287 #define SZREG 8 288 #endif 289 290 #if defined(__mips_o32) || defined(__mips_o64) 291 #define ALSK 7 /* stack alignment */ 292 #define ALMASK -7 /* stack alignment */ 293 #define SZFPREG 4 294 #define FP_L lwc1 295 #define FP_S swc1 296 #else 297 #define ALSK 15 /* stack alignment */ 298 #define ALMASK -15 /* stack alignment */ 299 #define SZFPREG 8 300 #define FP_L ldc1 301 #define FP_S sdc1 302 #endif 303 304 /* 305 * standard callframe { 306 * register_t cf_pad[N]; o32/64 (N=0), n32 (N=1) n64 (N=1) 307 * register_t cf_args[4]; arg0 - arg3 (only on o32 and o64) 308 * register_t cf_gp; global pointer (only on n32 and n64) 309 * register_t cf_sp; frame pointer 310 * register_t cf_ra; return address 311 * }; 312 */ 313 #if defined(__mips_o32) || defined(__mips_o64) 314 #define CALLFRAME_SIZ (SZREG * (4 + 2)) 315 #define CALLFRAME_S0 0 316 #elif defined(__mips_n32) || defined(__mips_n64) 317 #define CALLFRAME_SIZ (SZREG * 4) 318 #define CALLFRAME_S0 (CALLFRAME_SIZ - 4 * SZREG) 319 #endif 320 #ifndef _KERNEL 321 #define CALLFRAME_GP (CALLFRAME_SIZ - 3 * SZREG) 322 #endif 323 #define CALLFRAME_SP (CALLFRAME_SIZ - 2 * SZREG) 324 #define CALLFRAME_RA (CALLFRAME_SIZ - 1 * SZREG) 325 326 /* 327 * While it would be nice to be compatible with the SGI 328 * REG_L and REG_S macros, because they do not take parameters, it 329 * is impossible to use them with the _MIPS_SIM_ABIX32 model. 330 * 331 * These macros hide the use of mips3 instructions from the 332 * assembler to prevent the assembler from generating 64-bit style 333 * ABI calls. 334 */ 335 #if _MIPS_SZPTR == 32 336 #define PTR_ADD add 337 #define PTR_ADDI addi 338 #define PTR_ADDU addu 339 #define PTR_ADDIU addiu 340 #define PTR_SUB add 341 #define PTR_SUBI subi 342 #define PTR_SUBU subu 343 #define PTR_SUBIU subu 344 #define PTR_L lw 345 #define PTR_LA la 346 #define PTR_S sw 347 #define PTR_SLL sll 348 #define PTR_SLLV sllv 349 #define PTR_SRL srl 350 #define PTR_SRLV srlv 351 #define PTR_SRA sra 352 #define PTR_SRAV srav 353 #define PTR_LL ll 354 #define PTR_SC sc 355 #define PTR_WORD .word 356 #define PTR_SCALESHIFT 2 357 #else /* _MIPS_SZPTR == 64 */ 358 #define PTR_ADD dadd 359 #define PTR_ADDI daddi 360 #define PTR_ADDU daddu 361 #define PTR_ADDIU daddiu 362 #define PTR_SUB dadd 363 #define PTR_SUBI dsubi 364 #define PTR_SUBU dsubu 365 #define PTR_SUBIU dsubu 366 #define PTR_L ld 367 #define PTR_LA dla 368 #define PTR_S sd 369 #define PTR_SLL dsll 370 #define PTR_SLLV dsllv 371 #define PTR_SRL dsrl 372 #define PTR_SRLV dsrlv 373 #define PTR_SRA dsra 374 #define PTR_SRAV dsrav 375 #define PTR_LL lld 376 #define PTR_SC scd 377 #define PTR_WORD .dword 378 #define PTR_SCALESHIFT 3 379 #endif /* _MIPS_SZPTR == 64 */ 380 381 #if _MIPS_SZINT == 32 382 #define INT_ADD add 383 #define INT_ADDI addi 384 #define INT_ADDU addu 385 #define INT_ADDIU addiu 386 #define INT_SUB add 387 #define INT_SUBI subi 388 #define INT_SUBU subu 389 #define INT_SUBIU subu 390 #define INT_L lw 391 #define INT_LA la 392 #define INT_S sw 393 #define INT_SLL sll 394 #define INT_SLLV sllv 395 #define INT_SRL srl 396 #define INT_SRLV srlv 397 #define INT_SRA sra 398 #define INT_SRAV srav 399 #define INT_LL ll 400 #define INT_SC sc 401 #define INT_WORD .word 402 #define INT_SCALESHIFT 2 403 #else 404 #define INT_ADD dadd 405 #define INT_ADDI daddi 406 #define INT_ADDU daddu 407 #define INT_ADDIU daddiu 408 #define INT_SUB dadd 409 #define INT_SUBI dsubi 410 #define INT_SUBU dsubu 411 #define INT_SUBIU dsubu 412 #define INT_L ld 413 #define INT_LA dla 414 #define INT_S sd 415 #define INT_SLL dsll 416 #define INT_SLLV dsllv 417 #define INT_SRL dsrl 418 #define INT_SRLV dsrlv 419 #define INT_SRA dsra 420 #define INT_SRAV dsrav 421 #define INT_LL lld 422 #define INT_SC scd 423 #define INT_WORD .dword 424 #define INT_SCALESHIFT 3 425 #endif 426 427 #if _MIPS_SZLONG == 32 428 #define LONG_ADD add 429 #define LONG_ADDI addi 430 #define LONG_ADDU addu 431 #define LONG_ADDIU addiu 432 #define LONG_SUB add 433 #define LONG_SUBI subi 434 #define LONG_SUBU subu 435 #define LONG_SUBIU subu 436 #define LONG_L lw 437 #define LONG_LA la 438 #define LONG_S sw 439 #define LONG_SLL sll 440 #define LONG_SLLV sllv 441 #define LONG_SRL srl 442 #define LONG_SRLV srlv 443 #define LONG_SRA sra 444 #define LONG_SRAV srav 445 #define LONG_LL ll 446 #define LONG_SC sc 447 #define LONG_WORD .word 448 #define LONG_SCALESHIFT 2 449 #else 450 #define LONG_ADD dadd 451 #define LONG_ADDI daddi 452 #define LONG_ADDU daddu 453 #define LONG_ADDIU daddiu 454 #define LONG_SUB dadd 455 #define LONG_SUBI dsubi 456 #define LONG_SUBU dsubu 457 #define LONG_SUBIU dsubu 458 #define LONG_L ld 459 #define LONG_LA dla 460 #define LONG_S sd 461 #define LONG_SLL dsll 462 #define LONG_SLLV dsllv 463 #define LONG_SRL dsrl 464 #define LONG_SRLV dsrlv 465 #define LONG_SRA dsra 466 #define LONG_SRAV dsrav 467 #define LONG_LL lld 468 #define LONG_SC scd 469 #define LONG_WORD .dword 470 #define LONG_SCALESHIFT 3 471 #endif 472 473 #if SZREG == 4 474 #define REG_L lw 475 #define REG_S sw 476 #define REG_LI li 477 #define REG_ADDU addu 478 #define REG_SLL sll 479 #define REG_SLLV sllv 480 #define REG_SRL srl 481 #define REG_SRLV srlv 482 #define REG_SRA sra 483 #define REG_SRAV srav 484 #define REG_LL ll 485 #define REG_SC sc 486 #define REG_SCALESHIFT 2 487 #else 488 #define REG_L ld 489 #define REG_S sd 490 #define REG_LI dli 491 #define REG_ADDU daddu 492 #define REG_SLL dsll 493 #define REG_SLLV dsllv 494 #define REG_SRL dsrl 495 #define REG_SRLV dsrlv 496 #define REG_SRA dsra 497 #define REG_SRAV dsrav 498 #define REG_LL lld 499 #define REG_SC scd 500 #define REG_SCALESHIFT 3 501 #endif 502 503 #if _MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || \ 504 _MIPS_ISA == _MIPS_ISA_MIPS32 505 #define MFC0 mfc0 506 #define MTC0 mtc0 507 #endif 508 #if _MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || \ 509 _MIPS_ISA == _MIPS_ISA_MIPS64 510 #define MFC0 dmfc0 511 #define MTC0 dmtc0 512 #endif 513 514 #if defined(__mips_o32) || defined(__mips_o64) 515 516 #ifdef __ABICALLS__ 517 #define CPRESTORE(r) .cprestore r 518 #define CPLOAD(r) .cpload r 519 #else 520 #define CPRESTORE(r) /* not needed */ 521 #define CPLOAD(r) /* not needed */ 522 #endif 523 524 #define SETUP_GP \ 525 .set push; \ 526 .set noreorder; \ 527 .cpload t9; \ 528 .set pop 529 #define SETUP_GPX(r) \ 530 .set push; \ 531 .set noreorder; \ 532 move r,ra; /* save old ra */ \ 533 bal 7f; \ 534 nop; \ 535 7: .cpload ra; \ 536 move ra,r; \ 537 .set pop 538 #define SETUP_GPX_L(r,lbl) \ 539 .set push; \ 540 .set noreorder; \ 541 move r,ra; /* save old ra */ \ 542 bal lbl; \ 543 nop; \ 544 lbl: .cpload ra; \ 545 move ra,r; \ 546 .set pop 547 #define SAVE_GP(x) .cprestore x 548 549 #define SETUP_GP64(a,b) /* n32/n64 specific */ 550 #define SETUP_GP64_R(a,b) /* n32/n64 specific */ 551 #define SETUP_GPX64(a,b) /* n32/n64 specific */ 552 #define SETUP_GPX64_L(a,b,c) /* n32/n64 specific */ 553 #define RESTORE_GP64 /* n32/n64 specific */ 554 #define USE_ALT_CP(a) /* n32/n64 specific */ 555 #endif /* __mips_o32 || __mips_o64 */ 556 557 #if defined(__mips_o32) || defined(__mips_o64) 558 #define REG_PROLOGUE .set push 559 #define REG_EPILOGUE .set pop 560 #endif 561 #if defined(__mips_n32) || defined(__mips_n64) 562 #define REG_PROLOGUE .set push ; .set mips3 563 #define REG_EPILOGUE .set pop 564 #endif 565 566 #if defined(__mips_n32) || defined(__mips_n64) 567 #define SETUP_GP /* o32 specific */ 568 #define SETUP_GPX(r) /* o32 specific */ 569 #define SETUP_GPX_L(r,lbl) /* o32 specific */ 570 #define SAVE_GP(x) /* o32 specific */ 571 #define SETUP_GP64(a,b) .cpsetup $25, a, b 572 #define SETUP_GPX64(a,b) \ 573 .set push; \ 574 move b,ra; \ 575 .set noreorder; \ 576 bal 7f; \ 577 nop; \ 578 7: .set pop; \ 579 .cpsetup ra, a, 7b; \ 580 move ra,b 581 #define SETUP_GPX64_L(a,b,c) \ 582 .set push; \ 583 move b,ra; \ 584 .set noreorder; \ 585 bal c; \ 586 nop; \ 587 c: .set pop; \ 588 .cpsetup ra, a, c; \ 589 move ra,b 590 #define RESTORE_GP64 .cpreturn 591 #define USE_ALT_CP(a) .cplocal a 592 #endif /* __mips_n32 || __mips_n64 */ 593 594 /* 595 * The DYNAMIC_STATUS_MASK option adds an additional masking operation 596 * when updating the hardware interrupt mask in the status register. 597 * 598 * This is useful for platforms that need to at run-time mask 599 * interrupts based on motherboard configuration or to handle 600 * slowly clearing interrupts. 601 * 602 * XXX this is only currently implemented for mips3. 603 */ 604 #ifdef MIPS_DYNAMIC_STATUS_MASK 605 #define DYNAMIC_STATUS_MASK(sr,scratch) \ 606 lw scratch, mips_dynamic_status_mask; \ 607 and sr, sr, scratch 608 609 #define DYNAMIC_STATUS_MASK_TOUSER(sr,scratch1) \ 610 ori sr, (MIPS_INT_MASK | MIPS_SR_INT_IE); \ 611 DYNAMIC_STATUS_MASK(sr,scratch1) 612 #else 613 #define DYNAMIC_STATUS_MASK(sr,scratch) 614 #define DYNAMIC_STATUS_MASK_TOUSER(sr,scratch1) 615 #endif 616 617 /* See lock_stubs.S. */ 618 #define MIPS_LOCK_RAS_SIZE 256 619 620 #define CPUVAR(off) _C_LABEL(cpu_info_store)+__CONCAT(CPU_INFO_,off) 621 622 #endif /* _MIPS_ASM_H */ 623
Indexes created Wed Sep 24 05:09:52 GMT 2025