1 /* 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, 2015, Red Hat Inc. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP 27 #define CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP 28 29 #include "asm/register.hpp" 30 31 // definitions of various symbolic names for machine registers 32 33 // First intercalls between C and Java which use 8 general registers 34 // and 8 floating registers 35 36 // we also have to copy between x86 and ARM registers but that's a 37 // secondary complication -- not all code employing C call convention 38 // executes as x86 code though -- we generate some of it 39 40 class Argument VALUE_OBJ_CLASS_SPEC { 41 public: 42 enum { 43 n_int_register_parameters_c = 8, // r0, r1, ... r7 (c_rarg0, c_rarg1, ...) 44 n_float_register_parameters_c = 8, // v0, v1, ... v7 (c_farg0, c_farg1, ... ) 45 46 n_int_register_parameters_j = 8, // r1, ... r7, r0 (rj_rarg0, j_rarg1, ... 47 n_float_register_parameters_j = 8 // v0, v1, ... v7 (j_farg0, j_farg1, ... 48 }; 49 }; 50 51 REGISTER_DECLARATION(Register, c_rarg0, r0); 52 REGISTER_DECLARATION(Register, c_rarg1, r1); 53 REGISTER_DECLARATION(Register, c_rarg2, r2); 54 REGISTER_DECLARATION(Register, c_rarg3, r3); 55 REGISTER_DECLARATION(Register, c_rarg4, r4); 56 REGISTER_DECLARATION(Register, c_rarg5, r5); 57 REGISTER_DECLARATION(Register, c_rarg6, r6); 58 REGISTER_DECLARATION(Register, c_rarg7, r7); 59 60 REGISTER_DECLARATION(FloatRegister, c_farg0, v0); 61 REGISTER_DECLARATION(FloatRegister, c_farg1, v1); 62 REGISTER_DECLARATION(FloatRegister, c_farg2, v2); 63 REGISTER_DECLARATION(FloatRegister, c_farg3, v3); 64 REGISTER_DECLARATION(FloatRegister, c_farg4, v4); 65 REGISTER_DECLARATION(FloatRegister, c_farg5, v5); 66 REGISTER_DECLARATION(FloatRegister, c_farg6, v6); 67 REGISTER_DECLARATION(FloatRegister, c_farg7, v7); 68 69 // Symbolically name the register arguments used by the Java calling convention. 70 // We have control over the convention for java so we can do what we please. 71 // What pleases us is to offset the java calling convention so that when 72 // we call a suitable jni method the arguments are lined up and we don't 73 // have to do much shuffling. A suitable jni method is non-static and a 74 // small number of arguments 75 // 76 // |--------------------------------------------------------------------| 77 // | c_rarg0 c_rarg1 c_rarg2 c_rarg3 c_rarg4 c_rarg5 c_rarg6 c_rarg7 | 78 // |--------------------------------------------------------------------| 79 // | r0 r1 r2 r3 r4 r5 r6 r7 | 80 // |--------------------------------------------------------------------| 81 // | j_rarg7 j_rarg0 j_rarg1 j_rarg2 j_rarg3 j_rarg4 j_rarg5 j_rarg6 | 82 // |--------------------------------------------------------------------| 83 84 85 REGISTER_DECLARATION(Register, j_rarg0, c_rarg1); 86 REGISTER_DECLARATION(Register, j_rarg1, c_rarg2); 87 REGISTER_DECLARATION(Register, j_rarg2, c_rarg3); 88 REGISTER_DECLARATION(Register, j_rarg3, c_rarg4); 89 REGISTER_DECLARATION(Register, j_rarg4, c_rarg5); 90 REGISTER_DECLARATION(Register, j_rarg5, c_rarg6); 91 REGISTER_DECLARATION(Register, j_rarg6, c_rarg7); 92 REGISTER_DECLARATION(Register, j_rarg7, c_rarg0); 93 94 // Java floating args are passed as per C 95 96 REGISTER_DECLARATION(FloatRegister, j_farg0, v0); 97 REGISTER_DECLARATION(FloatRegister, j_farg1, v1); 98 REGISTER_DECLARATION(FloatRegister, j_farg2, v2); 99 REGISTER_DECLARATION(FloatRegister, j_farg3, v3); 100 REGISTER_DECLARATION(FloatRegister, j_farg4, v4); 101 REGISTER_DECLARATION(FloatRegister, j_farg5, v5); 102 REGISTER_DECLARATION(FloatRegister, j_farg6, v6); 103 REGISTER_DECLARATION(FloatRegister, j_farg7, v7); 104 105 // registers used to hold VM data either temporarily within a method 106 // or across method calls 107 108 // volatile (caller-save) registers 109 110 // r8 is used for indirect result location return 111 // we use it and r9 as scratch registers 112 REGISTER_DECLARATION(Register, rscratch1, r8); 113 REGISTER_DECLARATION(Register, rscratch2, r9); 114 115 // current method -- must be in a call-clobbered register 116 REGISTER_DECLARATION(Register, rmethod, r12); 117 118 // non-volatile (callee-save) registers are r16-29 119 // of which the following are dedicated global state 120 121 // link register 122 REGISTER_DECLARATION(Register, lr, r30); 123 // frame pointer 124 REGISTER_DECLARATION(Register, rfp, r29); 125 // current thread 126 REGISTER_DECLARATION(Register, rthread, r28); 127 // base of heap 128 REGISTER_DECLARATION(Register, rheapbase, r27); 129 // constant pool cache 130 REGISTER_DECLARATION(Register, rcpool, r26); 131 // monitors allocated on stack 132 REGISTER_DECLARATION(Register, rmonitors, r25); 133 // locals on stack 134 REGISTER_DECLARATION(Register, rlocals, r24); 135 // bytecode pointer 136 REGISTER_DECLARATION(Register, rbcp, r22); 137 // Dispatch table base 138 REGISTER_DECLARATION(Register, rdispatch, r21); 139 // Java stack pointer 140 REGISTER_DECLARATION(Register, esp, r20); 141 142 // TODO : x86 uses rbp to save SP in method handle code 143 // we may need to do the same with fp 144 // JSR 292 fixed register usages: 145 //REGISTER_DECLARATION(Register, r_mh_SP_save, r29); 146 147 #define assert_cond(ARG1) assert(ARG1, #ARG1) 148 149 namespace asm_util { 150 uint32_t encode_logical_immediate(bool is32, uint64_t imm); 151 }; 152 153 using namespace asm_util; 154 155 156 class Assembler; 157 158 class Instruction_aarch64 { 159 unsigned insn; 160 #ifdef ASSERT 161 unsigned bits; 162 #endif 163 Assembler *assem; 164 165 public: 166 167 Instruction_aarch64(class Assembler *as) { 168 #ifdef ASSERT 169 bits = 0; 170 #endif 171 insn = 0; 172 assem = as; 173 } 174 175 inline ~Instruction_aarch64(); 176 177 unsigned &get_insn() { return insn; } 178 #ifdef ASSERT 179 unsigned &get_bits() { return bits; } 180 #endif 181 182 static inline int32_t extend(unsigned val, int hi = 31, int lo = 0) { 183 union { 184 unsigned u; 185 int n; 186 }; 187 188 u = val << (31 - hi); 189 n = n >> (31 - hi + lo); 190 return n; 191 } 192 193 static inline uint32_t extract(uint32_t val, int msb, int lsb) { 194 int nbits = msb - lsb + 1; 195 assert_cond(msb >= lsb); 196 uint32_t mask = (1U << nbits) - 1; 197 uint32_t result = val >> lsb; 198 result &= mask; 199 return result; 200 } 201 202 static inline int32_t sextract(uint32_t val, int msb, int lsb) { 203 uint32_t uval = extract(val, msb, lsb); 204 return extend(uval, msb - lsb); 205 } 206 207 static void patch(address a, int msb, int lsb, unsigned long val) { 208 int nbits = msb - lsb + 1; 209 guarantee(val < (1U << nbits), "Field too big for insn"); 210 assert_cond(msb >= lsb); 211 unsigned mask = (1U << nbits) - 1; 212 val <<= lsb; 213 mask <<= lsb; 214 unsigned target = *(unsigned *)a; 215 target &= ~mask; 216 target |= val; 217 *(unsigned *)a = target; 218 } 219 220 static void spatch(address a, int msb, int lsb, long val) { 221 int nbits = msb - lsb + 1; 222 long chk = val >> (nbits - 1); 223 guarantee (chk == -1 || chk == 0, "Field too big for insn"); 224 unsigned uval = val; 225 unsigned mask = (1U << nbits) - 1; 226 uval &= mask; 227 uval <<= lsb; 228 mask <<= lsb; 229 unsigned target = *(unsigned *)a; 230 target &= ~mask; 231 target |= uval; 232 *(unsigned *)a = target; 233 } 234 235 void f(unsigned val, int msb, int lsb) { 236 int nbits = msb - lsb + 1; 237 guarantee(val < (1U << nbits), "Field too big for insn"); 238 assert_cond(msb >= lsb); 239 unsigned mask = (1U << nbits) - 1; 240 val <<= lsb; 241 mask <<= lsb; 242 insn |= val; 243 assert_cond((bits & mask) == 0); 244 #ifdef ASSERT 245 bits |= mask; 246 #endif 247 } 248 249 void f(unsigned val, int bit) { 250 f(val, bit, bit); 251 } 252 253 void sf(long val, int msb, int lsb) { 254 int nbits = msb - lsb + 1; 255 long chk = val >> (nbits - 1); 256 guarantee (chk == -1 || chk == 0, "Field too big for insn"); 257 unsigned uval = val; 258 unsigned mask = (1U << nbits) - 1; 259 uval &= mask; 260 f(uval, lsb + nbits - 1, lsb); 261 } 262 263 void rf(Register r, int lsb) { 264 f(r->encoding_nocheck(), lsb + 4, lsb); 265 } 266 267 // reg|ZR 268 void zrf(Register r, int lsb) { 269 f(r->encoding_nocheck() - (r == zr), lsb + 4, lsb); 270 } 271 272 // reg|SP 273 void srf(Register r, int lsb) { 274 f(r == sp ? 31 : r->encoding_nocheck(), lsb + 4, lsb); 275 } 276 277 void rf(FloatRegister r, int lsb) { 278 f(r->encoding_nocheck(), lsb + 4, lsb); 279 } 280 281 unsigned get(int msb = 31, int lsb = 0) { 282 int nbits = msb - lsb + 1; 283 unsigned mask = ((1U << nbits) - 1) << lsb; 284 assert_cond(bits & mask == mask); 285 return (insn & mask) >> lsb; 286 } 287 288 void fixed(unsigned value, unsigned mask) { 289 assert_cond ((mask & bits) == 0); 290 #ifdef ASSERT 291 bits |= mask; 292 #endif 293 insn |= value; 294 } 295 }; 296 297 #define starti Instruction_aarch64 do_not_use(this); set_current(&do_not_use) 298 299 class PrePost { 300 int _offset; 301 Register _r; 302 public: 303 PrePost(Register reg, int o) : _r(reg), _offset(o) { } 304 int offset() { return _offset; } 305 Register reg() { return _r; } 306 }; 307 308 class Pre : public PrePost { 309 public: 310 Pre(Register reg, int o) : PrePost(reg, o) { } 311 }; 312 class Post : public PrePost { 313 public: 314 Post(Register reg, int o) : PrePost(reg, o) { } 315 }; 316 317 namespace ext 318 { 319 enum operation { uxtb, uxth, uxtw, uxtx, sxtb, sxth, sxtw, sxtx }; 320 }; 321 322 // abs methods which cannot overflow and so are well-defined across 323 // the entire domain of integer types. 324 static inline unsigned int uabs(unsigned int n) { 325 union { 326 unsigned int result; 327 int value; 328 }; 329 result = n; 330 if (value < 0) result = -result; 331 return result; 332 } 333 static inline unsigned long uabs(unsigned long n) { 334 union { 335 unsigned long result; 336 long value; 337 }; 338 result = n; 339 if (value < 0) result = -result; 340 return result; 341 } 342 static inline unsigned long uabs(long n) { return uabs((unsigned long)n); } 343 static inline unsigned long uabs(int n) { return uabs((unsigned int)n); } 344 345 // Addressing modes 346 class Address VALUE_OBJ_CLASS_SPEC { 347 public: 348 349 enum mode { no_mode, base_plus_offset, pre, post, pcrel, 350 base_plus_offset_reg, literal }; 351 352 // Shift and extend for base reg + reg offset addressing 353 class extend { 354 int _option, _shift; 355 ext::operation _op; 356 public: 357 extend() { } 358 extend(int s, int o, ext::operation op) : _shift(s), _option(o), _op(op) { } 359 int option() const{ return _option; } 360 int shift() const { return _shift; } 361 ext::operation op() const { return _op; } 362 }; 363 class uxtw : public extend { 364 public: 365 uxtw(int shift = -1): extend(shift, 0b010, ext::uxtw) { } 366 }; 367 class lsl : public extend { 368 public: 369 lsl(int shift = -1): extend(shift, 0b011, ext::uxtx) { } 370 }; 371 class sxtw : public extend { 372 public: 373 sxtw(int shift = -1): extend(shift, 0b110, ext::sxtw) { } 374 }; 375 class sxtx : public extend { 376 public: 377 sxtx(int shift = -1): extend(shift, 0b111, ext::sxtx) { } 378 }; 379 380 private: 381 Register _base; 382 Register _index; 383 long _offset; 384 enum mode _mode; 385 extend _ext; 386 387 RelocationHolder _rspec; 388 389 // Typically we use AddressLiterals we want to use their rval 390 // However in some situations we want the lval (effect address) of 391 // the item. We provide a special factory for making those lvals. 392 bool _is_lval; 393 394 // If the target is far we'll need to load the ea of this to a 395 // register to reach it. Otherwise if near we can do PC-relative 396 // addressing. 397 address _target; 398 399 public: 400 Address() 401 : _mode(no_mode) { } 402 Address(Register r) 403 : _mode(base_plus_offset), _base(r), _offset(0), _index(noreg), _target(0) { } 404 Address(Register r, int o) 405 : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } 406 Address(Register r, long o) 407 : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } 408 Address(Register r, unsigned long o) 409 : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } 410 #ifdef ASSERT 411 Address(Register r, ByteSize disp) 412 : _mode(base_plus_offset), _base(r), _offset(in_bytes(disp)), 413 _index(noreg), _target(0) { } 414 #endif 415 Address(Register r, Register r1, extend ext = lsl()) 416 : _mode(base_plus_offset_reg), _base(r), _index(r1), 417 _ext(ext), _offset(0), _target(0) { } 418 Address(Pre p) 419 : _mode(pre), _base(p.reg()), _offset(p.offset()) { } 420 Address(Post p) 421 : _mode(post), _base(p.reg()), _offset(p.offset()), _target(0) { } 422 Address(address target, RelocationHolder const& rspec) 423 : _mode(literal), 424 _rspec(rspec), 425 _is_lval(false), 426 _target(target) { } 427 Address(address target, relocInfo::relocType rtype = relocInfo::external_word_type); 428 Address(Register base, RegisterOrConstant index, extend ext = lsl()) 429 : _base (base), 430 _ext(ext), _offset(0), _target(0) { 431 if (index.is_register()) { 432 _mode = base_plus_offset_reg; 433 _index = index.as_register(); 434 } else { 435 guarantee(ext.option() == ext::uxtx, "should be"); 436 assert(index.is_constant(), "should be"); 437 _mode = base_plus_offset; 438 _offset = index.as_constant() << ext.shift(); 439 } 440 } 441 442 Register base() const { 443 guarantee((_mode == base_plus_offset | _mode == base_plus_offset_reg 444 | _mode == post), 445 "wrong mode"); 446 return _base; 447 } 448 long offset() const { 449 return _offset; 450 } 451 Register index() const { 452 return _index; 453 } 454 mode getMode() const { 455 return _mode; 456 } 457 bool uses(Register reg) const { return _base == reg || _index == reg; } 458 address target() const { return _target; } 459 const RelocationHolder& rspec() const { return _rspec; } 460 461 void encode(Instruction_aarch64 *i) const { 462 i->f(0b111, 29, 27); 463 i->srf(_base, 5); 464 465 switch(_mode) { 466 case base_plus_offset: 467 { 468 unsigned size = i->get(31, 30); 469 if (i->get(26, 26) && i->get(23, 23)) { 470 // SIMD Q Type - Size = 128 bits 471 assert(size == 0, "bad size"); 472 size = 0b100; 473 } 474 unsigned mask = (1 << size) - 1; 475 if (_offset < 0 || _offset & mask) 476 { 477 i->f(0b00, 25, 24); 478 i->f(0, 21), i->f(0b00, 11, 10); 479 i->sf(_offset, 20, 12); 480 } else { 481 i->f(0b01, 25, 24); 482 i->f(_offset >> size, 21, 10); 483 } 484 } 485 break; 486 487 case base_plus_offset_reg: 488 { 489 i->f(0b00, 25, 24); 490 i->f(1, 21); 491 i->rf(_index, 16); 492 i->f(_ext.option(), 15, 13); 493 unsigned size = i->get(31, 30); 494 if (i->get(26, 26) && i->get(23, 23)) { 495 // SIMD Q Type - Size = 128 bits 496 assert(size == 0, "bad size"); 497 size = 0b100; 498 } 499 if (size == 0) // It's a byte 500 i->f(_ext.shift() >= 0, 12); 501 else { 502 if (_ext.shift() > 0) 503 assert(_ext.shift() == (int)size, "bad shift"); 504 i->f(_ext.shift() > 0, 12); 505 } 506 i->f(0b10, 11, 10); 507 } 508 break; 509 510 case pre: 511 i->f(0b00, 25, 24); 512 i->f(0, 21), i->f(0b11, 11, 10); 513 i->sf(_offset, 20, 12); 514 break; 515 516 case post: 517 i->f(0b00, 25, 24); 518 i->f(0, 21), i->f(0b01, 11, 10); 519 i->sf(_offset, 20, 12); 520 break; 521 522 default: 523 ShouldNotReachHere(); 524 } 525 } 526 527 void encode_pair(Instruction_aarch64 *i) const { 528 switch(_mode) { 529 case base_plus_offset: 530 i->f(0b010, 25, 23); 531 break; 532 case pre: 533 i->f(0b011, 25, 23); 534 break; 535 case post: 536 i->f(0b001, 25, 23); 537 break; 538 default: 539 ShouldNotReachHere(); 540 } 541 542 unsigned size; // Operand shift in 32-bit words 543 544 if (i->get(26, 26)) { // float 545 switch(i->get(31, 30)) { 546 case 0b10: 547 size = 2; break; 548 case 0b01: 549 size = 1; break; 550 case 0b00: 551 size = 0; break; 552 default: 553 ShouldNotReachHere(); 554 } 555 } else { 556 size = i->get(31, 31); 557 } 558 559 size = 4 << size; 560 guarantee(_offset % size == 0, "bad offset"); 561 i->sf(_offset / size, 21, 15); 562 i->srf(_base, 5); 563 } 564 565 void encode_nontemporal_pair(Instruction_aarch64 *i) const { 566 // Only base + offset is allowed 567 i->f(0b000, 25, 23); 568 unsigned size = i->get(31, 31); 569 size = 4 << size; 570 guarantee(_offset % size == 0, "bad offset"); 571 i->sf(_offset / size, 21, 15); 572 i->srf(_base, 5); 573 guarantee(_mode == Address::base_plus_offset, 574 "Bad addressing mode for non-temporal op"); 575 } 576 577 void lea(MacroAssembler *, Register) const; 578 579 static bool offset_ok_for_immed(long offset, int shift = 0) { 580 unsigned mask = (1 << shift) - 1; 581 if (offset < 0 || offset & mask) { 582 return (uabs(offset) < (1 << (20 - 12))); // Unscaled offset 583 } else { 584 return ((offset >> shift) < (1 << (21 - 10 + 1))); // Scaled, unsigned offset 585 } 586 } 587 }; 588 589 // Convience classes 590 class RuntimeAddress: public Address { 591 592 public: 593 594 RuntimeAddress(address target) : Address(target, relocInfo::runtime_call_type) {} 595 596 }; 597 598 class OopAddress: public Address { 599 600 public: 601 602 OopAddress(address target) : Address(target, relocInfo::oop_type){} 603 604 }; 605 606 class ExternalAddress: public Address { 607 private: 608 static relocInfo::relocType reloc_for_target(address target) { 609 // Sometimes ExternalAddress is used for values which aren't 610 // exactly addresses, like the card table base. 611 // external_word_type can't be used for values in the first page 612 // so just skip the reloc in that case. 613 return external_word_Relocation::can_be_relocated(target) ? relocInfo::external_word_type : relocInfo::none; 614 } 615 616 public: 617 618 ExternalAddress(address target) : Address(target, reloc_for_target(target)) {} 619 620 }; 621 622 class InternalAddress: public Address { 623 624 public: 625 626 InternalAddress(address target) : Address(target, relocInfo::internal_word_type) {} 627 }; 628 629 const int FPUStateSizeInWords = 32 * 2; 630 typedef enum { 631 PLDL1KEEP = 0b00000, PLDL1STRM, PLDL2KEEP, PLDL2STRM, PLDL3KEEP, PLDL3STRM, 632 PSTL1KEEP = 0b10000, PSTL1STRM, PSTL2KEEP, PSTL2STRM, PSTL3KEEP, PSTL3STRM, 633 PLIL1KEEP = 0b01000, PLIL1STRM, PLIL2KEEP, PLIL2STRM, PLIL3KEEP, PLIL3STRM 634 } prfop; 635 636 class Assembler : public AbstractAssembler { 637 638 #ifndef PRODUCT 639 static const unsigned long asm_bp; 640 641 void emit_long(jint x) { 642 if ((unsigned long)pc() == asm_bp) 643 asm volatile ("nop"); 644 AbstractAssembler::emit_int32(x); 645 } 646 #else 647 void emit_long(jint x) { 648 AbstractAssembler::emit_int32(x); 649 } 650 #endif 651 652 public: 653 654 enum { instruction_size = 4 }; 655 656 Address adjust(Register base, int offset, bool preIncrement) { 657 if (preIncrement) 658 return Address(Pre(base, offset)); 659 else 660 return Address(Post(base, offset)); 661 } 662 663 Address pre(Register base, int offset) { 664 return adjust(base, offset, true); 665 } 666 667 Address post (Register base, int offset) { 668 return adjust(base, offset, false); 669 } 670 671 Instruction_aarch64* current; 672 673 void set_current(Instruction_aarch64* i) { current = i; } 674 675 void f(unsigned val, int msb, int lsb) { 676 current->f(val, msb, lsb); 677 } 678 void f(unsigned val, int msb) { 679 current->f(val, msb, msb); 680 } 681 void sf(long val, int msb, int lsb) { 682 current->sf(val, msb, lsb); 683 } 684 void rf(Register reg, int lsb) { 685 current->rf(reg, lsb); 686 } 687 void srf(Register reg, int lsb) { 688 current->srf(reg, lsb); 689 } 690 void zrf(Register reg, int lsb) { 691 current->zrf(reg, lsb); 692 } 693 void rf(FloatRegister reg, int lsb) { 694 current->rf(reg, lsb); 695 } 696 void fixed(unsigned value, unsigned mask) { 697 current->fixed(value, mask); 698 } 699 700 void emit() { 701 emit_long(current->get_insn()); 702 assert_cond(current->get_bits() == 0xffffffff); 703 current = NULL; 704 } 705 706 typedef void (Assembler::* uncond_branch_insn)(address dest); 707 typedef void (Assembler::* compare_and_branch_insn)(Register Rt, address dest); 708 typedef void (Assembler::* test_and_branch_insn)(Register Rt, int bitpos, address dest); 709 typedef void (Assembler::* prefetch_insn)(address target, prfop); 710 711 void wrap_label(Label &L, uncond_branch_insn insn); 712 void wrap_label(Register r, Label &L, compare_and_branch_insn insn); 713 void wrap_label(Register r, int bitpos, Label &L, test_and_branch_insn insn); 714 void wrap_label(Label &L, prfop, prefetch_insn insn); 715 716 // PC-rel. addressing 717 718 void adr(Register Rd, address dest); 719 void _adrp(Register Rd, address dest); 720 721 void adr(Register Rd, const Address &dest); 722 void _adrp(Register Rd, const Address &dest); 723 724 void adr(Register Rd, Label &L) { 725 wrap_label(Rd, L, &Assembler::Assembler::adr); 726 } 727 void _adrp(Register Rd, Label &L) { 728 wrap_label(Rd, L, &Assembler::_adrp); 729 } 730 731 void adrp(Register Rd, const Address &dest, unsigned long &offset); 732 733 #undef INSN 734 735 void add_sub_immediate(Register Rd, Register Rn, unsigned uimm, int op, 736 int negated_op); 737 738 // Add/subtract (immediate) 739 #define INSN(NAME, decode, negated) \ 740 void NAME(Register Rd, Register Rn, unsigned imm, unsigned shift) { \ 741 starti; \ 742 f(decode, 31, 29), f(0b10001, 28, 24), f(shift, 23, 22), f(imm, 21, 10); \ 743 zrf(Rd, 0), srf(Rn, 5); \ 744 } \ 745 \ 746 void NAME(Register Rd, Register Rn, unsigned imm) { \ 747 starti; \ 748 add_sub_immediate(Rd, Rn, imm, decode, negated); \ 749 } 750 751 INSN(addsw, 0b001, 0b011); 752 INSN(subsw, 0b011, 0b001); 753 INSN(adds, 0b101, 0b111); 754 INSN(subs, 0b111, 0b101); 755 756 #undef INSN 757 758 #define INSN(NAME, decode, negated) \ 759 void NAME(Register Rd, Register Rn, unsigned imm) { \ 760 starti; \ 761 add_sub_immediate(Rd, Rn, imm, decode, negated); \ 762 } 763 764 INSN(addw, 0b000, 0b010); 765 INSN(subw, 0b010, 0b000); 766 INSN(add, 0b100, 0b110); 767 INSN(sub, 0b110, 0b100); 768 769 #undef INSN 770 771 // Logical (immediate) 772 #define INSN(NAME, decode, is32) \ 773 void NAME(Register Rd, Register Rn, uint64_t imm) { \ 774 starti; \ 775 uint32_t val = encode_logical_immediate(is32, imm); \ 776 f(decode, 31, 29), f(0b100100, 28, 23), f(val, 22, 10); \ 777 srf(Rd, 0), zrf(Rn, 5); \ 778 } 779 780 INSN(andw, 0b000, true); 781 INSN(orrw, 0b001, true); 782 INSN(eorw, 0b010, true); 783 INSN(andr, 0b100, false); 784 INSN(orr, 0b101, false); 785 INSN(eor, 0b110, false); 786 787 #undef INSN 788 789 #define INSN(NAME, decode, is32) \ 790 void NAME(Register Rd, Register Rn, uint64_t imm) { \ 791 starti; \ 792 uint32_t val = encode_logical_immediate(is32, imm); \ 793 f(decode, 31, 29), f(0b100100, 28, 23), f(val, 22, 10); \ 794 zrf(Rd, 0), zrf(Rn, 5); \ 795 } 796 797 INSN(ands, 0b111, false); 798 INSN(andsw, 0b011, true); 799 800 #undef INSN 801 802 // Move wide (immediate) 803 #define INSN(NAME, opcode) \ 804 void NAME(Register Rd, unsigned imm, unsigned shift = 0) { \ 805 assert_cond((shift/16)*16 == shift); \ 806 starti; \ 807 f(opcode, 31, 29), f(0b100101, 28, 23), f(shift/16, 22, 21), \ 808 f(imm, 20, 5); \ 809 rf(Rd, 0); \ 810 } 811 812 INSN(movnw, 0b000); 813 INSN(movzw, 0b010); 814 INSN(movkw, 0b011); 815 INSN(movn, 0b100); 816 INSN(movz, 0b110); 817 INSN(movk, 0b111); 818 819 #undef INSN 820 821 // Bitfield 822 #define INSN(NAME, opcode) \ 823 void NAME(Register Rd, Register Rn, unsigned immr, unsigned imms) { \ 824 starti; \ 825 f(opcode, 31, 22), f(immr, 21, 16), f(imms, 15, 10); \ 826 rf(Rn, 5), rf(Rd, 0); \ 827 } 828 829 INSN(sbfmw, 0b0001001100); 830 INSN(bfmw, 0b0011001100); 831 INSN(ubfmw, 0b0101001100); 832 INSN(sbfm, 0b1001001101); 833 INSN(bfm, 0b1011001101); 834 INSN(ubfm, 0b1101001101); 835 836 #undef INSN 837 838 // Extract 839 #define INSN(NAME, opcode) \ 840 void NAME(Register Rd, Register Rn, Register Rm, unsigned imms) { \ 841 starti; \ 842 f(opcode, 31, 21), f(imms, 15, 10); \ 843 rf(Rm, 16), rf(Rn, 5), rf(Rd, 0); \ 844 } 845 846 INSN(extrw, 0b00010011100); 847 INSN(extr, 0b10010011110); 848 849 #undef INSN 850 851 // The maximum range of a branch is fixed for the AArch64 852 // architecture. In debug mode we shrink it in order to test 853 // trampolines, but not so small that branches in the interpreter 854 // are out of range. 855 static const unsigned long branch_range = NOT_DEBUG(128 * M) DEBUG_ONLY(2 * M); 856 857 static bool reachable_from_branch_at(address branch, address target) { 858 return uabs(target - branch) < branch_range; 859 } 860 861 // Unconditional branch (immediate) 862 #define INSN(NAME, opcode) \ 863 void NAME(address dest) { \ 864 starti; \ 865 long offset = (dest - pc()) >> 2; \ 866 DEBUG_ONLY(assert(reachable_from_branch_at(pc(), dest), "debug only")); \ 867 f(opcode, 31), f(0b00101, 30, 26), sf(offset, 25, 0); \ 868 } \ 869 void NAME(Label &L) { \ 870 wrap_label(L, &Assembler::NAME); \ 871 } \ 872 void NAME(const Address &dest); 873 874 INSN(b, 0); 875 INSN(bl, 1); 876 877 #undef INSN 878 879 // Compare & branch (immediate) 880 #define INSN(NAME, opcode) \ 881 void NAME(Register Rt, address dest) { \ 882 long offset = (dest - pc()) >> 2; \ 883 starti; \ 884 f(opcode, 31, 24), sf(offset, 23, 5), rf(Rt, 0); \ 885 } \ 886 void NAME(Register Rt, Label &L) { \ 887 wrap_label(Rt, L, &Assembler::NAME); \ 888 } 889 890 INSN(cbzw, 0b00110100); 891 INSN(cbnzw, 0b00110101); 892 INSN(cbz, 0b10110100); 893 INSN(cbnz, 0b10110101); 894 895 #undef INSN 896 897 // Test & branch (immediate) 898 #define INSN(NAME, opcode) \ 899 void NAME(Register Rt, int bitpos, address dest) { \ 900 long offset = (dest - pc()) >> 2; \ 901 int b5 = bitpos >> 5; \ 902 bitpos &= 0x1f; \ 903 starti; \ 904 f(b5, 31), f(opcode, 30, 24), f(bitpos, 23, 19), sf(offset, 18, 5); \ 905 rf(Rt, 0); \ 906 } \ 907 void NAME(Register Rt, int bitpos, Label &L) { \ 908 wrap_label(Rt, bitpos, L, &Assembler::NAME); \ 909 } 910 911 INSN(tbz, 0b0110110); 912 INSN(tbnz, 0b0110111); 913 914 #undef INSN 915 916 // Conditional branch (immediate) 917 enum Condition 918 {EQ, NE, HS, CS=HS, LO, CC=LO, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL, NV}; 919 920 void br(Condition cond, address dest) { 921 long offset = (dest - pc()) >> 2; 922 starti; 923 f(0b0101010, 31, 25), f(0, 24), sf(offset, 23, 5), f(0, 4), f(cond, 3, 0); 924 } 925 926 #define INSN(NAME, cond) \ 927 void NAME(address dest) { \ 928 br(cond, dest); \ 929 } 930 931 INSN(beq, EQ); 932 INSN(bne, NE); 933 INSN(bhs, HS); 934 INSN(bcs, CS); 935 INSN(blo, LO); 936 INSN(bcc, CC); 937 INSN(bmi, MI); 938 INSN(bpl, PL); 939 INSN(bvs, VS); 940 INSN(bvc, VC); 941 INSN(bhi, HI); 942 INSN(bls, LS); 943 INSN(bge, GE); 944 INSN(blt, LT); 945 INSN(bgt, GT); 946 INSN(ble, LE); 947 INSN(bal, AL); 948 INSN(bnv, NV); 949 950 void br(Condition cc, Label &L); 951 952 #undef INSN 953 954 // Exception generation 955 void generate_exception(int opc, int op2, int LL, unsigned imm) { 956 starti; 957 f(0b11010100, 31, 24); 958 f(opc, 23, 21), f(imm, 20, 5), f(op2, 4, 2), f(LL, 1, 0); 959 } 960 961 #define INSN(NAME, opc, op2, LL) \ 962 void NAME(unsigned imm) { \ 963 generate_exception(opc, op2, LL, imm); \ 964 } 965 966 INSN(svc, 0b000, 0, 0b01); 967 INSN(hvc, 0b000, 0, 0b10); 968 INSN(smc, 0b000, 0, 0b11); 969 INSN(brk, 0b001, 0, 0b00); 970 INSN(hlt, 0b010, 0, 0b00); 971 INSN(dpcs1, 0b101, 0, 0b01); 972 INSN(dpcs2, 0b101, 0, 0b10); 973 INSN(dpcs3, 0b101, 0, 0b11); 974 975 #undef INSN 976 977 // System 978 void system(int op0, int op1, int CRn, int CRm, int op2, 979 Register rt = (Register)0b11111) 980 { 981 starti; 982 f(0b11010101000, 31, 21); 983 f(op0, 20, 19); 984 f(op1, 18, 16); 985 f(CRn, 15, 12); 986 f(CRm, 11, 8); 987 f(op2, 7, 5); 988 rf(rt, 0); 989 } 990 991 void hint(int imm) { 992 system(0b00, 0b011, 0b0010, imm, 0b000); 993 } 994 995 void nop(int count = 1) { 996 for (int i = 0; i < count; i++) 997 hint(0); 998 } 999 // we only provide mrs and msr for the special purpose system 1000 // registers where op1 (instr[20:19]) == 11 and, (currently) only 1001 // use it for FPSR n.b msr has L (instr[21]) == 0 mrs has L == 1 1002 1003 void msr(int op1, int CRn, int CRm, int op2, Register rt) { 1004 starti; 1005 f(0b1101010100011, 31, 19); 1006 f(op1, 18, 16); 1007 f(CRn, 15, 12); 1008 f(CRm, 11, 8); 1009 f(op2, 7, 5); 1010 // writing zr is ok 1011 zrf(rt, 0); 1012 } 1013 1014 void mrs(int op1, int CRn, int CRm, int op2, Register rt) { 1015 starti; 1016 f(0b1101010100111, 31, 19); 1017 f(op1, 18, 16); 1018 f(CRn, 15, 12); 1019 f(CRm, 11, 8); 1020 f(op2, 7, 5); 1021 // reading to zr is a mistake 1022 rf(rt, 0); 1023 } 1024 1025 enum barrier {OSHLD = 0b0001, OSHST, OSH, NSHLD=0b0101, NSHST, NSH, 1026 ISHLD = 0b1001, ISHST, ISH, LD=0b1101, ST, SY}; 1027 1028 void dsb(barrier imm) { 1029 system(0b00, 0b011, 0b00011, imm, 0b100); 1030 } 1031 1032 void dmb(barrier imm) { 1033 system(0b00, 0b011, 0b00011, imm, 0b101); 1034 } 1035 1036 void isb() { 1037 system(0b00, 0b011, 0b00011, SY, 0b110); 1038 } 1039 1040 void dc(Register Rt) { 1041 system(0b01, 0b011, 0b0111, 0b1011, 0b001, Rt); 1042 } 1043 1044 void ic(Register Rt) { 1045 system(0b01, 0b011, 0b0111, 0b0101, 0b001, Rt); 1046 } 1047 1048 // A more convenient access to dmb for our purposes 1049 enum Membar_mask_bits { 1050 // We can use ISH for a barrier because the ARM ARM says "This 1051 // architecture assumes that all Processing Elements that use the 1052 // same operating system or hypervisor are in the same Inner 1053 // Shareable shareability domain." 1054 StoreStore = ISHST, 1055 LoadStore = ISHLD, 1056 LoadLoad = ISHLD, 1057 StoreLoad = ISH, 1058 AnyAny = ISH 1059 }; 1060 1061 void membar(Membar_mask_bits order_constraint) { 1062 dmb(Assembler::barrier(order_constraint)); 1063 } 1064 1065 // Unconditional branch (register) 1066 void branch_reg(Register R, int opc) { 1067 starti; 1068 f(0b1101011, 31, 25); 1069 f(opc, 24, 21); 1070 f(0b11111000000, 20, 10); 1071 rf(R, 5); 1072 f(0b00000, 4, 0); 1073 } 1074 1075 #define INSN(NAME, opc) \ 1076 void NAME(Register R) { \ 1077 branch_reg(R, opc); \ 1078 } 1079 1080 INSN(br, 0b0000); 1081 INSN(blr, 0b0001); 1082 INSN(ret, 0b0010); 1083 1084 void ret(void *p); // This forces a compile-time error for ret(0) 1085 1086 #undef INSN 1087 1088 #define INSN(NAME, opc) \ 1089 void NAME() { \ 1090 branch_reg((Register)0b11111, opc); \ 1091 } 1092 1093 INSN(eret, 0b0100); 1094 INSN(drps, 0b0101); 1095 1096 #undef INSN 1097 1098 // Load/store exclusive 1099 enum operand_size { byte, halfword, word, xword }; 1100 1101 void load_store_exclusive(Register Rs, Register Rt1, Register Rt2, 1102 Register Rn, enum operand_size sz, int op, int o0) { 1103 starti; 1104 f(sz, 31, 30), f(0b001000, 29, 24), f(op, 23, 21); 1105 rf(Rs, 16), f(o0, 15), rf(Rt2, 10), rf(Rn, 5), rf(Rt1, 0); 1106 } 1107 1108 #define INSN4(NAME, sz, op, o0) /* Four registers */ \ 1109 void NAME(Register Rs, Register Rt1, Register Rt2, Register Rn) { \ 1110 load_store_exclusive(Rs, Rt1, Rt2, Rn, sz, op, o0); \ 1111 } 1112 1113 #define INSN3(NAME, sz, op, o0) /* Three registers */ \ 1114 void NAME(Register Rs, Register Rt, Register Rn) { \ 1115 load_store_exclusive(Rs, Rt, (Register)0b11111, Rn, sz, op, o0); \ 1116 } 1117 1118 #define INSN2(NAME, sz, op, o0) /* Two registers */ \ 1119 void NAME(Register Rt, Register Rn) { \ 1120 load_store_exclusive((Register)0b11111, Rt, (Register)0b11111, \ 1121 Rn, sz, op, o0); \ 1122 } 1123 1124 #define INSN_FOO(NAME, sz, op, o0) /* Three registers, encoded differently */ \ 1125 void NAME(Register Rt1, Register Rt2, Register Rn) { \ 1126 load_store_exclusive((Register)0b11111, Rt1, Rt2, Rn, sz, op, o0); \ 1127 } 1128 1129 // bytes 1130 INSN3(stxrb, byte, 0b000, 0); 1131 INSN3(stlxrb, byte, 0b000, 1); 1132 INSN2(ldxrb, byte, 0b010, 0); 1133 INSN2(ldaxrb, byte, 0b010, 1); 1134 INSN2(stlrb, byte, 0b100, 1); 1135 INSN2(ldarb, byte, 0b110, 1); 1136 1137 // halfwords 1138 INSN3(stxrh, halfword, 0b000, 0); 1139 INSN3(stlxrh, halfword, 0b000, 1); 1140 INSN2(ldxrh, halfword, 0b010, 0); 1141 INSN2(ldaxrh, halfword, 0b010, 1); 1142 INSN2(stlrh, halfword, 0b100, 1); 1143 INSN2(ldarh, halfword, 0b110, 1); 1144 1145 // words 1146 INSN3(stxrw, word, 0b000, 0); 1147 INSN3(stlxrw, word, 0b000, 1); 1148 INSN4(stxpw, word, 0b001, 0); 1149 INSN4(stlxpw, word, 0b001, 1); 1150 INSN2(ldxrw, word, 0b010, 0); 1151 INSN2(ldaxrw, word, 0b010, 1); 1152 INSN_FOO(ldxpw, word, 0b011, 0); 1153 INSN_FOO(ldaxpw, word, 0b011, 1); 1154 INSN2(stlrw, word, 0b100, 1); 1155 INSN2(ldarw, word, 0b110, 1); 1156 1157 // xwords 1158 INSN3(stxr, xword, 0b000, 0); 1159 INSN3(stlxr, xword, 0b000, 1); 1160 INSN4(stxp, xword, 0b001, 0); 1161 INSN4(stlxp, xword, 0b001, 1); 1162 INSN2(ldxr, xword, 0b010, 0); 1163 INSN2(ldaxr, xword, 0b010, 1); 1164 INSN_FOO(ldxp, xword, 0b011, 0); 1165 INSN_FOO(ldaxp, xword, 0b011, 1); 1166 INSN2(stlr, xword, 0b100, 1); 1167 INSN2(ldar, xword, 0b110, 1); 1168 1169 #undef INSN2 1170 #undef INSN3 1171 #undef INSN4 1172 #undef INSN_FOO 1173 1174 // Load register (literal) 1175 #define INSN(NAME, opc, V) \ 1176 void NAME(Register Rt, address dest) { \ 1177 long offset = (dest - pc()) >> 2; \ 1178 starti; \ 1179 f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ 1180 sf(offset, 23, 5); \ 1181 rf(Rt, 0); \ 1182 } \ 1183 void NAME(Register Rt, address dest, relocInfo::relocType rtype) { \ 1184 InstructionMark im(this); \ 1185 guarantee(rtype == relocInfo::internal_word_type, \ 1186 "only internal_word_type relocs make sense here"); \ 1187 code_section()->relocate(inst_mark(), InternalAddress(dest).rspec()); \ 1188 NAME(Rt, dest); \ 1189 } \ 1190 void NAME(Register Rt, Label &L) { \ 1191 wrap_label(Rt, L, &Assembler::NAME); \ 1192 } 1193 1194 INSN(ldrw, 0b00, 0); 1195 INSN(ldr, 0b01, 0); 1196 INSN(ldrsw, 0b10, 0); 1197 1198 #undef INSN 1199 1200 #define INSN(NAME, opc, V) \ 1201 void NAME(FloatRegister Rt, address dest) { \ 1202 long offset = (dest - pc()) >> 2; \ 1203 starti; \ 1204 f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ 1205 sf(offset, 23, 5); \ 1206 rf((Register)Rt, 0); \ 1207 } 1208 1209 INSN(ldrs, 0b00, 1); 1210 INSN(ldrd, 0b01, 1); 1211 INSN(ldrq, 0x10, 1); 1212 1213 #undef INSN 1214 1215 #define INSN(NAME, opc, V) \ 1216 void NAME(address dest, prfop op = PLDL1KEEP) { \ 1217 long offset = (dest - pc()) >> 2; \ 1218 starti; \ 1219 f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ 1220 sf(offset, 23, 5); \ 1221 f(op, 4, 0); \ 1222 } \ 1223 void NAME(Label &L, prfop op = PLDL1KEEP) { \ 1224 wrap_label(L, op, &Assembler::NAME); \ 1225 } 1226 1227 INSN(prfm, 0b11, 0); 1228 1229 #undef INSN 1230 1231 // Load/store 1232 void ld_st1(int opc, int p1, int V, int L, 1233 Register Rt1, Register Rt2, Address adr, bool no_allocate) { 1234 starti; 1235 f(opc, 31, 30), f(p1, 29, 27), f(V, 26), f(L, 22); 1236 zrf(Rt2, 10), zrf(Rt1, 0); 1237 if (no_allocate) { 1238 adr.encode_nontemporal_pair(current); 1239 } else { 1240 adr.encode_pair(current); 1241 } 1242 } 1243 1244 // Load/store register pair (offset) 1245 #define INSN(NAME, size, p1, V, L, no_allocate) \ 1246 void NAME(Register Rt1, Register Rt2, Address adr) { \ 1247 ld_st1(size, p1, V, L, Rt1, Rt2, adr, no_allocate); \ 1248 } 1249 1250 INSN(stpw, 0b00, 0b101, 0, 0, false); 1251 INSN(ldpw, 0b00, 0b101, 0, 1, false); 1252 INSN(ldpsw, 0b01, 0b101, 0, 1, false); 1253 INSN(stp, 0b10, 0b101, 0, 0, false); 1254 INSN(ldp, 0b10, 0b101, 0, 1, false); 1255 1256 // Load/store no-allocate pair (offset) 1257 INSN(stnpw, 0b00, 0b101, 0, 0, true); 1258 INSN(ldnpw, 0b00, 0b101, 0, 1, true); 1259 INSN(stnp, 0b10, 0b101, 0, 0, true); 1260 INSN(ldnp, 0b10, 0b101, 0, 1, true); 1261 1262 #undef INSN 1263 1264 #define INSN(NAME, size, p1, V, L, no_allocate) \ 1265 void NAME(FloatRegister Rt1, FloatRegister Rt2, Address adr) { \ 1266 ld_st1(size, p1, V, L, (Register)Rt1, (Register)Rt2, adr, no_allocate); \ 1267 } 1268 1269 INSN(stps, 0b00, 0b101, 1, 0, false); 1270 INSN(ldps, 0b00, 0b101, 1, 1, false); 1271 INSN(stpd, 0b01, 0b101, 1, 0, false); 1272 INSN(ldpd, 0b01, 0b101, 1, 1, false); 1273 INSN(stpq, 0b10, 0b101, 1, 0, false); 1274 INSN(ldpq, 0b10, 0b101, 1, 1, false); 1275 1276 #undef INSN 1277 1278 // Load/store register (all modes) 1279 void ld_st2(Register Rt, const Address &adr, int size, int op, int V = 0) { 1280 starti; 1281 1282 f(V, 26); // general reg? 1283 zrf(Rt, 0); 1284 1285 // Encoding for literal loads is done here (rather than pushed 1286 // down into Address::encode) because the encoding of this 1287 // instruction is too different from all of the other forms to 1288 // make it worth sharing. 1289 if (adr.getMode() == Address::literal) { 1290 assert(size == 0b10 || size == 0b11, "bad operand size in ldr"); 1291 assert(op == 0b01, "literal form can only be used with loads"); 1292 f(size & 0b01, 31, 30), f(0b011, 29, 27), f(0b00, 25, 24); 1293 long offset = (adr.target() - pc()) >> 2; 1294 sf(offset, 23, 5); 1295 code_section()->relocate(pc(), adr.rspec()); 1296 return; 1297 } 1298 1299 f(size, 31, 30); 1300 f(op, 23, 22); // str 1301 adr.encode(current); 1302 } 1303 1304 #define INSN(NAME, size, op) \ 1305 void NAME(Register Rt, const Address &adr) { \ 1306 ld_st2(Rt, adr, size, op); \ 1307 } \ 1308 1309 INSN(str, 0b11, 0b00); 1310 INSN(strw, 0b10, 0b00); 1311 INSN(strb, 0b00, 0b00); 1312 INSN(strh, 0b01, 0b00); 1313 1314 INSN(ldr, 0b11, 0b01); 1315 INSN(ldrw, 0b10, 0b01); 1316 INSN(ldrb, 0b00, 0b01); 1317 INSN(ldrh, 0b01, 0b01); 1318 1319 INSN(ldrsb, 0b00, 0b10); 1320 INSN(ldrsbw, 0b00, 0b11); 1321 INSN(ldrsh, 0b01, 0b10); 1322 INSN(ldrshw, 0b01, 0b11); 1323 INSN(ldrsw, 0b10, 0b10); 1324 1325 #undef INSN 1326 1327 #define INSN(NAME, size, op) \ 1328 void NAME(const Address &adr, prfop pfop = PLDL1KEEP) { \ 1329 ld_st2((Register)pfop, adr, size, op); \ 1330 } 1331 1332 INSN(prfm, 0b11, 0b10); // FIXME: PRFM should not be used with 1333 // writeback modes, but the assembler 1334 // doesn't enfore that. 1335 1336 #undef INSN 1337 1338 #define INSN(NAME, size, op) \ 1339 void NAME(FloatRegister Rt, const Address &adr) { \ 1340 ld_st2((Register)Rt, adr, size, op, 1); \ 1341 } 1342 1343 INSN(strd, 0b11, 0b00); 1344 INSN(strs, 0b10, 0b00); 1345 INSN(ldrd, 0b11, 0b01); 1346 INSN(ldrs, 0b10, 0b01); 1347 INSN(strq, 0b00, 0b10); 1348 INSN(ldrq, 0x00, 0b11); 1349 1350 #undef INSN 1351 1352 enum shift_kind { LSL, LSR, ASR, ROR }; 1353 1354 void op_shifted_reg(unsigned decode, 1355 enum shift_kind kind, unsigned shift, 1356 unsigned size, unsigned op) { 1357 f(size, 31); 1358 f(op, 30, 29); 1359 f(decode, 28, 24); 1360 f(shift, 15, 10); 1361 f(kind, 23, 22); 1362 } 1363 1364 // Logical (shifted register) 1365 #define INSN(NAME, size, op, N) \ 1366 void NAME(Register Rd, Register Rn, Register Rm, \ 1367 enum shift_kind kind = LSL, unsigned shift = 0) { \ 1368 starti; \ 1369 f(N, 21); \ 1370 zrf(Rm, 16), zrf(Rn, 5), zrf(Rd, 0); \ 1371 op_shifted_reg(0b01010, kind, shift, size, op); \ 1372 } 1373 1374 INSN(andr, 1, 0b00, 0); 1375 INSN(orr, 1, 0b01, 0); 1376 INSN(eor, 1, 0b10, 0); 1377 INSN(ands, 1, 0b11, 0); 1378 INSN(andw, 0, 0b00, 0); 1379 INSN(orrw, 0, 0b01, 0); 1380 INSN(eorw, 0, 0b10, 0); 1381 INSN(andsw, 0, 0b11, 0); 1382 1383 INSN(bic, 1, 0b00, 1); 1384 INSN(orn, 1, 0b01, 1); 1385 INSN(eon, 1, 0b10, 1); 1386 INSN(bics, 1, 0b11, 1); 1387 INSN(bicw, 0, 0b00, 1); 1388 INSN(ornw, 0, 0b01, 1); 1389 INSN(eonw, 0, 0b10, 1); 1390 INSN(bicsw, 0, 0b11, 1); 1391 1392 #undef INSN 1393 1394 // Add/subtract (shifted register) 1395 #define INSN(NAME, size, op) \ 1396 void NAME(Register Rd, Register Rn, Register Rm, \ 1397 enum shift_kind kind, unsigned shift = 0) { \ 1398 starti; \ 1399 f(0, 21); \ 1400 assert_cond(kind != ROR); \ 1401 zrf(Rd, 0), zrf(Rn, 5), zrf(Rm, 16); \ 1402 op_shifted_reg(0b01011, kind, shift, size, op); \ 1403 } 1404 1405 INSN(add, 1, 0b000); 1406 INSN(sub, 1, 0b10); 1407 INSN(addw, 0, 0b000); 1408 INSN(subw, 0, 0b10); 1409 1410 INSN(adds, 1, 0b001); 1411 INSN(subs, 1, 0b11); 1412 INSN(addsw, 0, 0b001); 1413 INSN(subsw, 0, 0b11); 1414 1415 #undef INSN 1416 1417 // Add/subtract (extended register) 1418 #define INSN(NAME, op) \ 1419 void NAME(Register Rd, Register Rn, Register Rm, \ 1420 ext::operation option, int amount = 0) { \ 1421 starti; \ 1422 zrf(Rm, 16), srf(Rn, 5), srf(Rd, 0); \ 1423 add_sub_extended_reg(op, 0b01011, Rd, Rn, Rm, 0b00, option, amount); \ 1424 } 1425 1426 void add_sub_extended_reg(unsigned op, unsigned decode, 1427 Register Rd, Register Rn, Register Rm, 1428 unsigned opt, ext::operation option, unsigned imm) { 1429 guarantee(imm <= 4, "shift amount must be < 4"); 1430 f(op, 31, 29), f(decode, 28, 24), f(opt, 23, 22), f(1, 21); 1431 f(option, 15, 13), f(imm, 12, 10); 1432 } 1433 1434 INSN(addw, 0b000); 1435 INSN(subw, 0b010); 1436 INSN(add, 0b100); 1437 INSN(sub, 0b110); 1438 1439 #undef INSN 1440 1441 #define INSN(NAME, op) \ 1442 void NAME(Register Rd, Register Rn, Register Rm, \ 1443 ext::operation option, int amount = 0) { \ 1444 starti; \ 1445 zrf(Rm, 16), srf(Rn, 5), zrf(Rd, 0); \ 1446 add_sub_extended_reg(op, 0b01011, Rd, Rn, Rm, 0b00, option, amount); \ 1447 } 1448 1449 INSN(addsw, 0b001); 1450 INSN(subsw, 0b011); 1451 INSN(adds, 0b101); 1452 INSN(subs, 0b111); 1453 1454 #undef INSN 1455 1456 // Aliases for short forms of add and sub 1457 #define INSN(NAME) \ 1458 void NAME(Register Rd, Register Rn, Register Rm) { \ 1459 if (Rd == sp || Rn == sp) \ 1460 NAME(Rd, Rn, Rm, ext::uxtx); \ 1461 else \ 1462 NAME(Rd, Rn, Rm, LSL); \ 1463 } 1464 1465 INSN(addw); 1466 INSN(subw); 1467 INSN(add); 1468 INSN(sub); 1469 1470 INSN(addsw); 1471 INSN(subsw); 1472 INSN(adds); 1473 INSN(subs); 1474 1475 #undef INSN 1476 1477 // Add/subtract (with carry) 1478 void add_sub_carry(unsigned op, Register Rd, Register Rn, Register Rm) { 1479 starti; 1480 f(op, 31, 29); 1481 f(0b11010000, 28, 21); 1482 f(0b000000, 15, 10); 1483 zrf(Rm, 16), zrf(Rn, 5), zrf(Rd, 0); 1484 } 1485 1486 #define INSN(NAME, op) \ 1487 void NAME(Register Rd, Register Rn, Register Rm) { \ 1488 add_sub_carry(op, Rd, Rn, Rm); \ 1489 } 1490 1491 INSN(adcw, 0b000); 1492 INSN(adcsw, 0b001); 1493 INSN(sbcw, 0b010); 1494 INSN(sbcsw, 0b011); 1495 INSN(adc, 0b100); 1496 INSN(adcs, 0b101); 1497 INSN(sbc,0b110); 1498 INSN(sbcs, 0b111); 1499 1500 #undef INSN 1501 1502 // Conditional compare (both kinds) 1503 void conditional_compare(unsigned op, int o2, int o3, 1504 Register Rn, unsigned imm5, unsigned nzcv, 1505 unsigned cond) { 1506 f(op, 31, 29); 1507 f(0b11010010, 28, 21); 1508 f(cond, 15, 12); 1509 f(o2, 10); 1510 f(o3, 4); 1511 f(nzcv, 3, 0); 1512 f(imm5, 20, 16), rf(Rn, 5); 1513 } 1514 1515 #define INSN(NAME, op) \ 1516 void NAME(Register Rn, Register Rm, int imm, Condition cond) { \ 1517 starti; \ 1518 f(0, 11); \ 1519 conditional_compare(op, 0, 0, Rn, (uintptr_t)Rm, imm, cond); \ 1520 } \ 1521 \ 1522 void NAME(Register Rn, int imm5, int imm, Condition cond) { \ 1523 starti; \ 1524 f(1, 11); \ 1525 conditional_compare(op, 0, 0, Rn, imm5, imm, cond); \ 1526 } 1527 1528 INSN(ccmnw, 0b001); 1529 INSN(ccmpw, 0b011); 1530 INSN(ccmn, 0b101); 1531 INSN(ccmp, 0b111); 1532 1533 #undef INSN 1534 1535 // Conditional select 1536 void conditional_select(unsigned op, unsigned op2, 1537 Register Rd, Register Rn, Register Rm, 1538 unsigned cond) { 1539 starti; 1540 f(op, 31, 29); 1541 f(0b11010100, 28, 21); 1542 f(cond, 15, 12); 1543 f(op2, 11, 10); 1544 zrf(Rm, 16), zrf(Rn, 5), rf(Rd, 0); 1545 } 1546 1547 #define INSN(NAME, op, op2) \ 1548 void NAME(Register Rd, Register Rn, Register Rm, Condition cond) { \ 1549 conditional_select(op, op2, Rd, Rn, Rm, cond); \ 1550 } 1551 1552 INSN(cselw, 0b000, 0b00); 1553 INSN(csincw, 0b000, 0b01); 1554 INSN(csinvw, 0b010, 0b00); 1555 INSN(csnegw, 0b010, 0b01); 1556 INSN(csel, 0b100, 0b00); 1557 INSN(csinc, 0b100, 0b01); 1558 INSN(csinv, 0b110, 0b00); 1559 INSN(csneg, 0b110, 0b01); 1560 1561 #undef INSN 1562 1563 // Data processing 1564 void data_processing(unsigned op29, unsigned opcode, 1565 Register Rd, Register Rn) { 1566 f(op29, 31, 29), f(0b11010110, 28, 21); 1567 f(opcode, 15, 10); 1568 rf(Rn, 5), rf(Rd, 0); 1569 } 1570 1571 // (1 source) 1572 #define INSN(NAME, op29, opcode2, opcode) \ 1573 void NAME(Register Rd, Register Rn) { \ 1574 starti; \ 1575 f(opcode2, 20, 16); \ 1576 data_processing(op29, opcode, Rd, Rn); \ 1577 } 1578 1579 INSN(rbitw, 0b010, 0b00000, 0b00000); 1580 INSN(rev16w, 0b010, 0b00000, 0b00001); 1581 INSN(revw, 0b010, 0b00000, 0b00010); 1582 INSN(clzw, 0b010, 0b00000, 0b00100); 1583 INSN(clsw, 0b010, 0b00000, 0b00101); 1584 1585 INSN(rbit, 0b110, 0b00000, 0b00000); 1586 INSN(rev16, 0b110, 0b00000, 0b00001); 1587 INSN(rev32, 0b110, 0b00000, 0b00010); 1588 INSN(rev, 0b110, 0b00000, 0b00011); 1589 INSN(clz, 0b110, 0b00000, 0b00100); 1590 INSN(cls, 0b110, 0b00000, 0b00101); 1591 1592 #undef INSN 1593 1594 // (2 sources) 1595 #define INSN(NAME, op29, opcode) \ 1596 void NAME(Register Rd, Register Rn, Register Rm) { \ 1597 starti; \ 1598 rf(Rm, 16); \ 1599 data_processing(op29, opcode, Rd, Rn); \ 1600 } 1601 1602 INSN(udivw, 0b000, 0b000010); 1603 INSN(sdivw, 0b000, 0b000011); 1604 INSN(lslvw, 0b000, 0b001000); 1605 INSN(lsrvw, 0b000, 0b001001); 1606 INSN(asrvw, 0b000, 0b001010); 1607 INSN(rorvw, 0b000, 0b001011); 1608 1609 INSN(udiv, 0b100, 0b000010); 1610 INSN(sdiv, 0b100, 0b000011); 1611 INSN(lslv, 0b100, 0b001000); 1612 INSN(lsrv, 0b100, 0b001001); 1613 INSN(asrv, 0b100, 0b001010); 1614 INSN(rorv, 0b100, 0b001011); 1615 1616 #undef INSN 1617 1618 // (3 sources) 1619 void data_processing(unsigned op54, unsigned op31, unsigned o0, 1620 Register Rd, Register Rn, Register Rm, 1621 Register Ra) { 1622 starti; 1623 f(op54, 31, 29), f(0b11011, 28, 24); 1624 f(op31, 23, 21), f(o0, 15); 1625 zrf(Rm, 16), zrf(Ra, 10), zrf(Rn, 5), zrf(Rd, 0); 1626 } 1627 1628 #define INSN(NAME, op54, op31, o0) \ 1629 void NAME(Register Rd, Register Rn, Register Rm, Register Ra) { \ 1630 data_processing(op54, op31, o0, Rd, Rn, Rm, Ra); \ 1631 } 1632 1633 INSN(maddw, 0b000, 0b000, 0); 1634 INSN(msubw, 0b000, 0b000, 1); 1635 INSN(madd, 0b100, 0b000, 0); 1636 INSN(msub, 0b100, 0b000, 1); 1637 INSN(smaddl, 0b100, 0b001, 0); 1638 INSN(smsubl, 0b100, 0b001, 1); 1639 INSN(umaddl, 0b100, 0b101, 0); 1640 INSN(umsubl, 0b100, 0b101, 1); 1641 1642 #undef INSN 1643 1644 #define INSN(NAME, op54, op31, o0) \ 1645 void NAME(Register Rd, Register Rn, Register Rm) { \ 1646 data_processing(op54, op31, o0, Rd, Rn, Rm, (Register)31); \ 1647 } 1648 1649 INSN(smulh, 0b100, 0b010, 0); 1650 INSN(umulh, 0b100, 0b110, 0); 1651 1652 #undef INSN 1653 1654 // Floating-point data-processing (1 source) 1655 void data_processing(unsigned op31, unsigned type, unsigned opcode, 1656 FloatRegister Vd, FloatRegister Vn) { 1657 starti; 1658 f(op31, 31, 29); 1659 f(0b11110, 28, 24); 1660 f(type, 23, 22), f(1, 21), f(opcode, 20, 15), f(0b10000, 14, 10); 1661 rf(Vn, 5), rf(Vd, 0); 1662 } 1663 1664 #define INSN(NAME, op31, type, opcode) \ 1665 void NAME(FloatRegister Vd, FloatRegister Vn) { \ 1666 data_processing(op31, type, opcode, Vd, Vn); \ 1667 } 1668 1669 private: 1670 INSN(i_fmovs, 0b000, 0b00, 0b000000); 1671 public: 1672 INSN(fabss, 0b000, 0b00, 0b000001); 1673 INSN(fnegs, 0b000, 0b00, 0b000010); 1674 INSN(fsqrts, 0b000, 0b00, 0b000011); 1675 INSN(fcvts, 0b000, 0b00, 0b000101); // Single-precision to double-precision 1676 1677 private: 1678 INSN(i_fmovd, 0b000, 0b01, 0b000000); 1679 public: 1680 INSN(fabsd, 0b000, 0b01, 0b000001); 1681 INSN(fnegd, 0b000, 0b01, 0b000010); 1682 INSN(fsqrtd, 0b000, 0b01, 0b000011); 1683 INSN(fcvtd, 0b000, 0b01, 0b000100); // Double-precision to single-precision 1684 1685 void fmovd(FloatRegister Vd, FloatRegister Vn) { 1686 assert(Vd != Vn, "should be"); 1687 i_fmovd(Vd, Vn); 1688 } 1689 1690 void fmovs(FloatRegister Vd, FloatRegister Vn) { 1691 assert(Vd != Vn, "should be"); 1692 i_fmovs(Vd, Vn); 1693 } 1694 1695 #undef INSN 1696 1697 // Floating-point data-processing (2 source) 1698 void data_processing(unsigned op31, unsigned type, unsigned opcode, 1699 FloatRegister Vd, FloatRegister Vn, FloatRegister Vm) { 1700 starti; 1701 f(op31, 31, 29); 1702 f(0b11110, 28, 24); 1703 f(type, 23, 22), f(1, 21), f(opcode, 15, 12), f(0b10, 11, 10); 1704 rf(Vm, 16), rf(Vn, 5), rf(Vd, 0); 1705 } 1706 1707 #define INSN(NAME, op31, type, opcode) \ 1708 void NAME(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm) { \ 1709 data_processing(op31, type, opcode, Vd, Vn, Vm); \ 1710 } 1711 1712 INSN(fmuls, 0b000, 0b00, 0b0000); 1713 INSN(fdivs, 0b000, 0b00, 0b0001); 1714 INSN(fadds, 0b000, 0b00, 0b0010); 1715 INSN(fsubs, 0b000, 0b00, 0b0011); 1716 INSN(fnmuls, 0b000, 0b00, 0b1000); 1717 1718 INSN(fmuld, 0b000, 0b01, 0b0000); 1719 INSN(fdivd, 0b000, 0b01, 0b0001); 1720 INSN(faddd, 0b000, 0b01, 0b0010); 1721 INSN(fsubd, 0b000, 0b01, 0b0011); 1722 INSN(fnmuld, 0b000, 0b01, 0b1000); 1723 1724 #undef INSN 1725 1726 // Floating-point data-processing (3 source) 1727 void data_processing(unsigned op31, unsigned type, unsigned o1, unsigned o0, 1728 FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, 1729 FloatRegister Va) { 1730 starti; 1731 f(op31, 31, 29); 1732 f(0b11111, 28, 24); 1733 f(type, 23, 22), f(o1, 21), f(o0, 15); 1734 rf(Vm, 16), rf(Va, 10), rf(Vn, 5), rf(Vd, 0); 1735 } 1736 1737 #define INSN(NAME, op31, type, o1, o0) \ 1738 void NAME(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, \ 1739 FloatRegister Va) { \ 1740 data_processing(op31, type, o1, o0, Vd, Vn, Vm, Va); \ 1741 } 1742 1743 INSN(fmadds, 0b000, 0b00, 0, 0); 1744 INSN(fmsubs, 0b000, 0b00, 0, 1); 1745 INSN(fnmadds, 0b000, 0b00, 1, 0); 1746 INSN(fnmsubs, 0b000, 0b00, 1, 1); 1747 1748 INSN(fmaddd, 0b000, 0b01, 0, 0); 1749 INSN(fmsubd, 0b000, 0b01, 0, 1); 1750 INSN(fnmaddd, 0b000, 0b01, 1, 0); 1751 INSN(fnmsub, 0b000, 0b01, 1, 1); 1752 1753 #undef INSN 1754 1755 // Floating-point conditional select 1756 void fp_conditional_select(unsigned op31, unsigned type, 1757 unsigned op1, unsigned op2, 1758 Condition cond, FloatRegister Vd, 1759 FloatRegister Vn, FloatRegister Vm) { 1760 starti; 1761 f(op31, 31, 29); 1762 f(0b11110, 28, 24); 1763 f(type, 23, 22); 1764 f(op1, 21, 21); 1765 f(op2, 11, 10); 1766 f(cond, 15, 12); 1767 rf(Vm, 16), rf(Vn, 5), rf(Vd, 0); 1768 } 1769 1770 #define INSN(NAME, op31, type, op1, op2) \ 1771 void NAME(FloatRegister Vd, FloatRegister Vn, \ 1772 FloatRegister Vm, Condition cond) { \ 1773 fp_conditional_select(op31, type, op1, op2, cond, Vd, Vn, Vm); \ 1774 } 1775 1776 INSN(fcsels, 0b000, 0b00, 0b1, 0b11); 1777 INSN(fcseld, 0b000, 0b01, 0b1, 0b11); 1778 1779 #undef INSN 1780 1781 // Floating-point<->integer conversions 1782 void float_int_convert(unsigned op31, unsigned type, 1783 unsigned rmode, unsigned opcode, 1784 Register Rd, Register Rn) { 1785 starti; 1786 f(op31, 31, 29); 1787 f(0b11110, 28, 24); 1788 f(type, 23, 22), f(1, 21), f(rmode, 20, 19); 1789 f(opcode, 18, 16), f(0b000000, 15, 10); 1790 zrf(Rn, 5), zrf(Rd, 0); 1791 } 1792 1793 #define INSN(NAME, op31, type, rmode, opcode) \ 1794 void NAME(Register Rd, FloatRegister Vn) { \ 1795 float_int_convert(op31, type, rmode, opcode, Rd, (Register)Vn); \ 1796 } 1797 1798 INSN(fcvtzsw, 0b000, 0b00, 0b11, 0b000); 1799 INSN(fcvtzs, 0b100, 0b00, 0b11, 0b000); 1800 INSN(fcvtzdw, 0b000, 0b01, 0b11, 0b000); 1801 INSN(fcvtzd, 0b100, 0b01, 0b11, 0b000); 1802 1803 INSN(fmovs, 0b000, 0b00, 0b00, 0b110); 1804 INSN(fmovd, 0b100, 0b01, 0b00, 0b110); 1805 1806 // INSN(fmovhid, 0b100, 0b10, 0b01, 0b110); 1807 1808 #undef INSN 1809 1810 #define INSN(NAME, op31, type, rmode, opcode) \ 1811 void NAME(FloatRegister Vd, Register Rn) { \ 1812 float_int_convert(op31, type, rmode, opcode, (Register)Vd, Rn); \ 1813 } 1814 1815 INSN(fmovs, 0b000, 0b00, 0b00, 0b111); 1816 INSN(fmovd, 0b100, 0b01, 0b00, 0b111); 1817 1818 INSN(scvtfws, 0b000, 0b00, 0b00, 0b010); 1819 INSN(scvtfs, 0b100, 0b00, 0b00, 0b010); 1820 INSN(scvtfwd, 0b000, 0b01, 0b00, 0b010); 1821 INSN(scvtfd, 0b100, 0b01, 0b00, 0b010); 1822 1823 // INSN(fmovhid, 0b100, 0b10, 0b01, 0b111); 1824 1825 #undef INSN 1826 1827 // Floating-point compare 1828 void float_compare(unsigned op31, unsigned type, 1829 unsigned op, unsigned op2, 1830 FloatRegister Vn, FloatRegister Vm = (FloatRegister)0) { 1831 starti; 1832 f(op31, 31, 29); 1833 f(0b11110, 28, 24); 1834 f(type, 23, 22), f(1, 21); 1835 f(op, 15, 14), f(0b1000, 13, 10), f(op2, 4, 0); 1836 rf(Vn, 5), rf(Vm, 16); 1837 } 1838 1839 1840 #define INSN(NAME, op31, type, op, op2) \ 1841 void NAME(FloatRegister Vn, FloatRegister Vm) { \ 1842 float_compare(op31, type, op, op2, Vn, Vm); \ 1843 } 1844 1845 #define INSN1(NAME, op31, type, op, op2) \ 1846 void NAME(FloatRegister Vn, double d) { \ 1847 assert_cond(d == 0.0); \ 1848 float_compare(op31, type, op, op2, Vn); \ 1849 } 1850 1851 INSN(fcmps, 0b000, 0b00, 0b00, 0b00000); 1852 INSN1(fcmps, 0b000, 0b00, 0b00, 0b01000); 1853 // INSN(fcmpes, 0b000, 0b00, 0b00, 0b10000); 1854 // INSN1(fcmpes, 0b000, 0b00, 0b00, 0b11000); 1855 1856 INSN(fcmpd, 0b000, 0b01, 0b00, 0b00000); 1857 INSN1(fcmpd, 0b000, 0b01, 0b00, 0b01000); 1858 // INSN(fcmped, 0b000, 0b01, 0b00, 0b10000); 1859 // INSN1(fcmped, 0b000, 0b01, 0b00, 0b11000); 1860 1861 #undef INSN 1862 #undef INSN1 1863 1864 // Floating-point Move (immediate) 1865 private: 1866 unsigned pack(double value); 1867 1868 void fmov_imm(FloatRegister Vn, double value, unsigned size) { 1869 starti; 1870 f(0b00011110, 31, 24), f(size, 23, 22), f(1, 21); 1871 f(pack(value), 20, 13), f(0b10000000, 12, 5); 1872 rf(Vn, 0); 1873 } 1874 1875 public: 1876 1877 void fmovs(FloatRegister Vn, double value) { 1878 if (value) 1879 fmov_imm(Vn, value, 0b00); 1880 else 1881 fmovs(Vn, zr); 1882 } 1883 void fmovd(FloatRegister Vn, double value) { 1884 if (value) 1885 fmov_imm(Vn, value, 0b01); 1886 else 1887 fmovd(Vn, zr); 1888 } 1889 1890 /* SIMD extensions 1891 * 1892 * We just use FloatRegister in the following. They are exactly the same 1893 * as SIMD registers. 1894 */ 1895 public: 1896 1897 enum SIMD_Arrangement { 1898 T8B, T16B, T4H, T8H, T2S, T4S, T1D, T2D 1899 }; 1900 1901 enum SIMD_RegVariant { 1902 B, H, S, D, Q 1903 }; 1904 1905 #define INSN(NAME, op) \ 1906 void NAME(FloatRegister Rt, SIMD_RegVariant T, const Address &adr) { \ 1907 ld_st2((Register)Rt, adr, (int)T & 3, op + ((T==Q) ? 0b10:0b00), 1); \ 1908 } \ 1909 1910 INSN(ldr, 1); 1911 INSN(str, 0); 1912 1913 #undef INSN 1914 1915 private: 1916 1917 void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, int op1, int op2) { 1918 starti; 1919 f(0,31), f((int)T & 1, 30); 1920 f(op1, 29, 21), f(0, 20, 16), f(op2, 15, 12); 1921 f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); 1922 } 1923 void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, 1924 int imm, int op1, int op2) { 1925 starti; 1926 f(0,31), f((int)T & 1, 30); 1927 f(op1 | 0b100, 29, 21), f(0b11111, 20, 16), f(op2, 15, 12); 1928 f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); 1929 } 1930 void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, 1931 Register Xm, int op1, int op2) { 1932 starti; 1933 f(0,31), f((int)T & 1, 30); 1934 f(op1 | 0b100, 29, 21), rf(Xm, 16), f(op2, 15, 12); 1935 f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); 1936 } 1937 1938 void ld_st(FloatRegister Vt, SIMD_Arrangement T, Address a, int op1, int op2) { 1939 switch (a.getMode()) { 1940 case Address::base_plus_offset: 1941 guarantee(a.offset() == 0, "no offset allowed here"); 1942 ld_st(Vt, T, a.base(), op1, op2); 1943 break; 1944 case Address::post: 1945 ld_st(Vt, T, a.base(), a.offset(), op1, op2); 1946 break; 1947 case Address::base_plus_offset_reg: 1948 ld_st(Vt, T, a.base(), a.index(), op1, op2); 1949 break; 1950 default: 1951 ShouldNotReachHere(); 1952 } 1953 } 1954 1955 public: 1956 1957 #define INSN1(NAME, op1, op2) \ 1958 void NAME(FloatRegister Vt, SIMD_Arrangement T, const Address &a) { \ 1959 ld_st(Vt, T, a, op1, op2); \ 1960 } 1961 1962 #define INSN2(NAME, op1, op2) \ 1963 void NAME(FloatRegister Vt, FloatRegister Vt2, SIMD_Arrangement T, const Address &a) { \ 1964 assert(Vt->successor() == Vt2, "Registers must be ordered"); \ 1965 ld_st(Vt, T, a, op1, op2); \ 1966 } 1967 1968 #define INSN3(NAME, op1, op2) \ 1969 void NAME(FloatRegister Vt, FloatRegister Vt2, FloatRegister Vt3, \ 1970 SIMD_Arrangement T, const Address &a) { \ 1971 assert(Vt->successor() == Vt2 && Vt2->successor() == Vt3, \ 1972 "Registers must be ordered"); \ 1973 ld_st(Vt, T, a, op1, op2); \ 1974 } 1975 1976 #define INSN4(NAME, op1, op2) \ 1977 void NAME(FloatRegister Vt, FloatRegister Vt2, FloatRegister Vt3, \ 1978 FloatRegister Vt4, SIMD_Arrangement T, const Address &a) { \ 1979 assert(Vt->successor() == Vt2 && Vt2->successor() == Vt3 && \ 1980 Vt3->successor() == Vt4, "Registers must be ordered"); \ 1981 ld_st(Vt, T, a, op1, op2); \ 1982 } 1983 1984 INSN1(ld1, 0b001100010, 0b0111); 1985 INSN2(ld1, 0b001100010, 0b1010); 1986 INSN3(ld1, 0b001100010, 0b0110); 1987 INSN4(ld1, 0b001100010, 0b0010); 1988 1989 INSN2(ld2, 0b001100010, 0b1000); 1990 INSN3(ld3, 0b001100010, 0b0100); 1991 INSN4(ld4, 0b001100010, 0b0000); 1992 1993 INSN1(st1, 0b001100000, 0b0111); 1994 INSN2(st1, 0b001100000, 0b1010); 1995 INSN3(st1, 0b001100000, 0b0110); 1996 INSN4(st1, 0b001100000, 0b0010); 1997 1998 INSN2(st2, 0b001100000, 0b1000); 1999 INSN3(st3, 0b001100000, 0b0100); 2000 INSN4(st4, 0b001100000, 0b0000); 2001 2002 INSN1(ld1r, 0b001101010, 0b1100); 2003 INSN2(ld2r, 0b001101011, 0b1100); 2004 INSN3(ld3r, 0b001101010, 0b1110); 2005 INSN4(ld4r, 0b001101011, 0b1110); 2006 2007 #undef INSN1 2008 #undef INSN2 2009 #undef INSN3 2010 #undef INSN4 2011 2012 #define INSN(NAME, opc) \ 2013 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ 2014 starti; \ 2015 assert(T == T8B || T == T16B, "must be T8B or T16B"); \ 2016 f(0, 31), f((int)T & 1, 30), f(opc, 29, 21); \ 2017 rf(Vm, 16), f(0b000111, 15, 10), rf(Vn, 5), rf(Vd, 0); \ 2018 } 2019 2020 INSN(eor, 0b101110001); 2021 INSN(orr, 0b001110101); 2022 INSN(andr, 0b001110001); 2023 INSN(bic, 0b001110011); 2024 INSN(bif, 0b101110111); 2025 INSN(bit, 0b101110101); 2026 INSN(bsl, 0b101110011); 2027 INSN(orn, 0b001110111); 2028 2029 #undef INSN 2030 2031 #define INSN(NAME, opc, opc2) \ 2032 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ 2033 starti; \ 2034 f(0, 31), f((int)T & 1, 30), f(opc, 29), f(0b01110, 28, 24); \ 2035 f((int)T >> 1, 23, 22), f(1, 21), rf(Vm, 16), f(opc2, 15, 10); \ 2036 rf(Vn, 5), rf(Vd, 0); \ 2037 } 2038 2039 INSN(addv, 0, 0b100001); 2040 INSN(subv, 1, 0b100001); 2041 INSN(mulv, 0, 0b100111); 2042 INSN(sshl, 0, 0b010001); 2043 INSN(ushl, 1, 0b010001); 2044 2045 #undef INSN 2046 2047 #define INSN(NAME, opc, opc2) \ 2048 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { \ 2049 starti; \ 2050 f(0, 31), f((int)T & 1, 30), f(opc, 29), f(0b01110, 28, 24); \ 2051 f((int)T >> 1, 23, 22), f(opc2, 21, 10); \ 2052 rf(Vn, 5), rf(Vd, 0); \ 2053 } 2054 2055 INSN(absr, 0, 0b100000101110); 2056 INSN(negr, 1, 0b100000101110); 2057 INSN(notr, 1, 0b100000010110); 2058 INSN(addv, 0, 0b110001101110); 2059 INSN(cls, 0, 0b100000010010); 2060 INSN(clz, 1, 0b100000010010); 2061 INSN(cnt, 0, 0b100000010110); 2062 2063 #undef INSN 2064 2065 #define INSN(NAME, op0, cmode0) \ 2066 void NAME(FloatRegister Vd, SIMD_Arrangement T, unsigned imm8, unsigned lsl = 0) { \ 2067 unsigned cmode = cmode0; \ 2068 unsigned op = op0; \ 2069 starti; \ 2070 assert(lsl == 0 || \ 2071 ((T == T4H || T == T8H) && lsl == 8) || \ 2072 ((T == T2S || T == T4S) && ((lsl >> 3) < 4)), "invalid shift"); \ 2073 cmode |= lsl >> 2; \ 2074 if (T == T4H || T == T8H) cmode |= 0b1000; \ 2075 if (!(T == T4H || T == T8H || T == T2S || T == T4S)) { \ 2076 assert(op == 0 && cmode0 == 0, "must be MOVI"); \ 2077 cmode = 0b1110; \ 2078 if (T == T1D || T == T2D) op = 1; \ 2079 } \ 2080 f(0, 31), f((int)T & 1, 30), f(op, 29), f(0b0111100000, 28, 19); \ 2081 f(imm8 >> 5, 18, 16), f(cmode, 15, 12), f(0x01, 11, 10), f(imm8 & 0b11111, 9, 5); \ 2082 rf(Vd, 0); \ 2083 } 2084 2085 INSN(movi, 0, 0); 2086 INSN(orri, 0, 1); 2087 INSN(mvni, 1, 0); 2088 INSN(bici, 1, 1); 2089 2090 #undef INSN 2091 2092 #define INSN(NAME, op1, op2, op3) \ 2093 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ 2094 starti; \ 2095 assert(T == T2S || T == T4S || T == T2D, "invalid arrangement"); \ 2096 f(0, 31), f((int)T & 1, 30), f(op1, 29), f(0b01110, 28, 24), f(op2, 23); \ 2097 f(T==T2D ? 1:0, 22); f(1, 21), rf(Vm, 16), f(op3, 15, 10), rf(Vn, 5), rf(Vd, 0); \ 2098 } 2099 2100 INSN(fadd, 0, 0, 0b110101); 2101 INSN(fdiv, 1, 0, 0b111111); 2102 INSN(fmul, 1, 0, 0b110111); 2103 INSN(fsub, 0, 1, 0b110101); 2104 2105 #undef INSN 2106 2107 #define INSN(NAME, opc) \ 2108 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ 2109 starti; \ 2110 assert(T == T4S, "arrangement must be T4S"); \ 2111 f(0b01011110000, 31, 21), rf(Vm, 16), f(opc, 15, 10), rf(Vn, 5), rf(Vd, 0); \ 2112 } 2113 2114 INSN(sha1c, 0b000000); 2115 INSN(sha1m, 0b001000); 2116 INSN(sha1p, 0b000100); 2117 INSN(sha1su0, 0b001100); 2118 INSN(sha256h2, 0b010100); 2119 INSN(sha256h, 0b010000); 2120 INSN(sha256su1, 0b011000); 2121 2122 #undef INSN 2123 2124 #define INSN(NAME, opc) \ 2125 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { \ 2126 starti; \ 2127 assert(T == T4S, "arrangement must be T4S"); \ 2128 f(0b0101111000101000, 31, 16), f(opc, 15, 10), rf(Vn, 5), rf(Vd, 0); \ 2129 } 2130 2131 INSN(sha1h, 0b000010); 2132 INSN(sha1su1, 0b000110); 2133 INSN(sha256su0, 0b001010); 2134 2135 #undef INSN 2136 2137 #define INSN(NAME, opc) \ 2138 void NAME(FloatRegister Vd, FloatRegister Vn) { \ 2139 starti; \ 2140 f(opc, 31, 10), rf(Vn, 5), rf(Vd, 0); \ 2141 } 2142 2143 INSN(aese, 0b0100111000101000010010); 2144 INSN(aesd, 0b0100111000101000010110); 2145 INSN(aesmc, 0b0100111000101000011010); 2146 INSN(aesimc, 0b0100111000101000011110); 2147 2148 #undef INSN 2149 2150 void ins(FloatRegister Vd, SIMD_RegVariant T, FloatRegister Vn, int didx, int sidx) { 2151 starti; 2152 assert(T != Q, "invalid register variant"); 2153 f(0b01101110000, 31, 21), f(((didx<<1)|1)<<(int)T, 20, 16), f(0, 15); 2154 f(sidx<<(int)T, 14, 11), f(1, 10), rf(Vn, 5), rf(Vd, 0); 2155 } 2156 2157 void umov(Register Rd, FloatRegister Vn, SIMD_RegVariant T, int idx) { 2158 starti; 2159 f(0, 31), f(T==D ? 1:0, 30), f(0b001110000, 29, 21); 2160 f(((idx<<1)|1)<<(int)T, 20, 16), f(0b001111, 15, 10); 2161 rf(Vn, 5), rf(Rd, 0); 2162 } 2163 2164 #define INSN(NAME, opc, opc2) \ 2165 void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, int shift){ \ 2166 starti; \ 2167 /* The encodings for the immh:immb fields (bits 22:16) are \ 2168 * 0001 xxx 8B/16B, shift = xxx \ 2169 * 001x xxx 4H/8H, shift = xxxx \ 2170 * 01xx xxx 2S/4S, shift = xxxxx \ 2171 * 1xxx xxx 1D/2D, shift = xxxxxx (1D is RESERVED) \ 2172 */ \ 2173 assert((1 << ((T>>1)+3)) > shift, "Invalid Shift value"); \ 2174 f(0, 31), f(T & 1, 30), f(opc, 29), f(0b011110, 28, 23), \ 2175 f((1 << ((T>>1)+3))|shift, 22, 16); f(opc2, 15, 10), rf(Vn, 5), rf(Vd, 0); \ 2176 } 2177 2178 INSN(shl, 0, 0b010101); 2179 INSN(sshr, 0, 0b000001); 2180 INSN(ushr, 1, 0b000001); 2181 2182 #undef INSN 2183 2184 void ushll(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, SIMD_Arrangement Tb, int shift) { 2185 starti; 2186 /* The encodings for the immh:immb fields (bits 22:16) are 2187 * 0001 xxx 8H, 8B/16b shift = xxx 2188 * 001x xxx 4S, 4H/8H shift = xxxx 2189 * 01xx xxx 2D, 2S/4S shift = xxxxx 2190 * 1xxx xxx RESERVED 2191 */ 2192 assert((Tb >> 1) + 1 == (Ta >> 1), "Incompatible arrangement"); 2193 assert((1 << ((Tb>>1)+3)) > shift, "Invalid shift value"); 2194 f(0, 31), f(Tb & 1, 30), f(0b1011110, 29, 23), f((1 << ((Tb>>1)+3))|shift, 22, 16); 2195 f(0b101001, 15, 10), rf(Vn, 5), rf(Vd, 0); 2196 } 2197 void ushll2(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, SIMD_Arrangement Tb, int shift) { 2198 ushll(Vd, Ta, Vn, Tb, shift); 2199 } 2200 2201 void uzp1(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement T, int op = 0){ 2202 starti; 2203 f(0, 31), f((T & 0x1), 30), f(0b001110, 29, 24), f((T >> 1), 23, 22), f(0, 21); 2204 rf(Vm, 16), f(0, 15), f(op, 14), f(0b0110, 13, 10), rf(Vn, 5), rf(Vd, 0); 2205 } 2206 void uzp2(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement T){ 2207 uzp1(Vd, Vn, Vm, T, 1); 2208 } 2209 2210 // Move from general purpose register 2211 // mov Vd.T[index], Rn 2212 void mov(FloatRegister Vd, SIMD_Arrangement T, int index, Register Xn) { 2213 starti; 2214 f(0b01001110000, 31, 21), f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); 2215 f(0b000111, 15, 10), rf(Xn, 5), rf(Vd, 0); 2216 } 2217 2218 // Move to general purpose register 2219 // mov Rd, Vn.T[index] 2220 void mov(Register Xd, FloatRegister Vn, SIMD_Arrangement T, int index) { 2221 starti; 2222 f(0, 31), f((T >= T1D) ? 1:0, 30), f(0b001110000, 29, 21); 2223 f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); 2224 f(0b001111, 15, 10), rf(Vn, 5), rf(Xd, 0); 2225 } 2226 2227 // We do not handle the 1Q arrangement. 2228 void pmull(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement Tb) { 2229 starti; 2230 assert(Ta == T8H && (Tb == T8B || Tb == T16B), "Invalid Size specifier"); 2231 f(0, 31), f(Tb & 1, 30), f(0b001110001, 29, 21), rf(Vm, 16), f(0b111000, 15, 10); 2232 rf(Vn, 5), rf(Vd, 0); 2233 } 2234 void pmull2(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement Tb) { 2235 pmull(Vd, Ta, Vn, Vm, Tb); 2236 } 2237 2238 void uqxtn(FloatRegister Vd, SIMD_Arrangement Tb, FloatRegister Vn, SIMD_Arrangement Ta) { 2239 starti; 2240 int size_b = (int)Tb >> 1; 2241 int size_a = (int)Ta >> 1; 2242 assert(size_b < 3 && size_b == size_a - 1, "Invalid size specifier"); 2243 f(0, 31), f(Tb & 1, 30), f(0b101110, 29, 24), f(size_b, 23, 22); 2244 f(0b100001010010, 21, 10), rf(Vn, 5), rf(Vd, 0); 2245 } 2246 2247 void rev32(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) 2248 { 2249 starti; 2250 assert(T <= T8H, "must be one of T8B, T16B, T4H, T8H"); 2251 f(0, 31), f((int)T & 1, 30), f(0b101110, 29, 24); 2252 f(T <= T16B ? 0b00 : 0b01, 23, 22), f(0b100000000010, 21, 10); 2253 rf(Vn, 5), rf(Vd, 0); 2254 } 2255 2256 void dup(FloatRegister Vd, SIMD_Arrangement T, Register Xs) 2257 { 2258 starti; 2259 assert(T != T1D, "reserved encoding"); 2260 f(0,31), f((int)T & 1, 30), f(0b001110000, 29, 21); 2261 f((1 << (T >> 1)), 20, 16), f(0b000011, 15, 10), rf(Xs, 5), rf(Vd, 0); 2262 } 2263 2264 void dup(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, int index = 0) 2265 { 2266 starti; 2267 assert(T != T1D, "reserved encoding"); 2268 f(0, 31), f((int)T & 1, 30), f(0b001110000, 29, 21); 2269 f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); 2270 f(0b000001, 15, 10), rf(Vn, 5), rf(Vd, 0); 2271 } 2272 2273 // CRC32 instructions 2274 #define INSN(NAME, c, sf, sz) \ 2275 void NAME(Register Rd, Register Rn, Register Rm) { \ 2276 starti; \ 2277 f(sf, 31), f(0b0011010110, 30, 21), f(0b010, 15, 13), f(c, 12); \ 2278 f(sz, 11, 10), rf(Rm, 16), rf(Rn, 5), rf(Rd, 0); \ 2279 } 2280 2281 INSN(crc32b, 0, 0, 0b00); 2282 INSN(crc32h, 0, 0, 0b01); 2283 INSN(crc32w, 0, 0, 0b10); 2284 INSN(crc32x, 0, 1, 0b11); 2285 INSN(crc32cb, 1, 0, 0b00); 2286 INSN(crc32ch, 1, 0, 0b01); 2287 INSN(crc32cw, 1, 0, 0b10); 2288 INSN(crc32cx, 1, 1, 0b11); 2289 2290 #undef INSN 2291 2292 2293 /* Simulator extensions to the ISA 2294 2295 haltsim 2296 2297 takes no arguments, causes the sim to enter a debug break and then 2298 return from the simulator run() call with STATUS_HALT? The linking 2299 code will call fatal() when it sees STATUS_HALT. 2300 2301 blrt Xn, Wm 2302 blrt Xn, #gpargs, #fpargs, #type 2303 Xn holds the 64 bit x86 branch_address 2304 call format is encoded either as immediate data in the call 2305 or in register Wm. In the latter case 2306 Wm[13..6] = #gpargs, 2307 Wm[5..2] = #fpargs, 2308 Wm[1,0] = #type 2309 2310 calls the x86 code address 'branch_address' supplied in Xn passing 2311 arguments taken from the general and floating point registers according 2312 to the supplied counts 'gpargs' and 'fpargs'. may return a result in r0 2313 or v0 according to the the return type #type' where 2314 2315 address branch_address; 2316 uimm4 gpargs; 2317 uimm4 fpargs; 2318 enum ReturnType type; 2319 2320 enum ReturnType 2321 { 2322 void_ret = 0, 2323 int_ret = 1, 2324 long_ret = 1, 2325 obj_ret = 1, // i.e. same as long 2326 float_ret = 2, 2327 double_ret = 3 2328 } 2329 2330 notify 2331 2332 notifies the simulator of a transfer of control. instr[14:0] 2333 identifies the type of change of control. 2334 2335 0 ==> initial entry to a method. 2336 2337 1 ==> return into a method from a submethod call. 2338 2339 2 ==> exit out of Java method code. 2340 2341 3 ==> start execution for a new bytecode. 2342 2343 in cases 1 and 2 the simulator is expected to use a JVM callback to 2344 identify the name of the specific method being executed. in case 4 2345 the simulator is expected to use a JVM callback to identify the 2346 bytecode index. 2347 2348 Instruction encodings 2349 --------------------- 2350 2351 These are encoded in the space with instr[28:25] = 00 which is 2352 unallocated. Encodings are 2353 2354 10987654321098765432109876543210 2355 PSEUDO_HALT = 0x11100000000000000000000000000000 2356 PSEUDO_BLRT = 0x11000000000000000_______________ 2357 PSEUDO_BLRTR = 0x1100000000000000100000__________ 2358 PSEUDO_NOTIFY = 0x10100000000000000_______________ 2359 2360 instr[31,29] = op1 : 111 ==> HALT, 110 ==> BLRT/BLRTR, 101 ==> NOTIFY 2361 2362 for BLRT 2363 instr[14,11] = #gpargs, instr[10,7] = #fpargs 2364 instr[6,5] = #type, instr[4,0] = Rn 2365 for BLRTR 2366 instr[9,5] = Rm, instr[4,0] = Rn 2367 for NOTIFY 2368 instr[14:0] = type : 0 ==> entry, 1 ==> reentry, 2 ==> exit, 3 ==> bcstart 2369 */ 2370 2371 enum NotifyType { method_entry, method_reentry, method_exit, bytecode_start }; 2372 2373 virtual void notify(int type) { 2374 if (UseBuiltinSim) { 2375 starti; 2376 // 109 2377 f(0b101, 31, 29); 2378 // 87654321098765 2379 f(0b00000000000000, 28, 15); 2380 f(type, 14, 0); 2381 } 2382 } 2383 2384 void blrt(Register Rn, int gpargs, int fpargs, int type) { 2385 if (UseBuiltinSim) { 2386 starti; 2387 f(0b110, 31 ,29); 2388 f(0b00, 28, 25); 2389 // 4321098765 2390 f(0b0000000000, 24, 15); 2391 f(gpargs, 14, 11); 2392 f(fpargs, 10, 7); 2393 f(type, 6, 5); 2394 rf(Rn, 0); 2395 } else { 2396 blr(Rn); 2397 } 2398 } 2399 2400 void blrt(Register Rn, Register Rm) { 2401 if (UseBuiltinSim) { 2402 starti; 2403 f(0b110, 31 ,29); 2404 f(0b00, 28, 25); 2405 // 4321098765 2406 f(0b0000000001, 24, 15); 2407 // 43210 2408 f(0b00000, 14, 10); 2409 rf(Rm, 5); 2410 rf(Rn, 0); 2411 } else { 2412 blr(Rn); 2413 } 2414 } 2415 2416 void haltsim() { 2417 starti; 2418 f(0b111, 31 ,29); 2419 f(0b00, 28, 27); 2420 // 654321098765432109876543210 2421 f(0b000000000000000000000000000, 26, 0); 2422 } 2423 2424 Assembler(CodeBuffer* code) : AbstractAssembler(code) { 2425 } 2426 2427 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, 2428 Register tmp, 2429 int offset) { 2430 ShouldNotCallThis(); 2431 return RegisterOrConstant(); 2432 } 2433 2434 // Stack overflow checking 2435 virtual void bang_stack_with_offset(int offset); 2436 2437 static bool operand_valid_for_logical_immediate(bool is32, uint64_t imm); 2438 static bool operand_valid_for_add_sub_immediate(long imm); 2439 static bool operand_valid_for_float_immediate(double imm); 2440 2441 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0); 2442 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0); 2443 }; 2444 2445 inline Assembler::Membar_mask_bits operator|(Assembler::Membar_mask_bits a, 2446 Assembler::Membar_mask_bits b) { 2447 return Assembler::Membar_mask_bits(unsigned(a)|unsigned(b)); 2448 } 2449 2450 Instruction_aarch64::~Instruction_aarch64() { 2451 assem->emit(); 2452 } 2453 2454 #undef starti 2455 2456 // Invert a condition 2457 inline const Assembler::Condition operator~(const Assembler::Condition cond) { 2458 return Assembler::Condition(int(cond) ^ 1); 2459 } 2460 2461 class BiasedLockingCounters; 2462 2463 extern "C" void das(uint64_t start, int len); 2464 2465 #endif // CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP