assembler_x86.hpp revision 1879:f95d63e2154a
1/* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef CPU_X86_VM_ASSEMBLER_X86_HPP 26#define CPU_X86_VM_ASSEMBLER_X86_HPP 27 28class BiasedLockingCounters; 29 30// Contains all the definitions needed for x86 assembly code generation. 31 32// Calling convention 33class Argument VALUE_OBJ_CLASS_SPEC { 34 public: 35 enum { 36#ifdef _LP64 37#ifdef _WIN64 38 n_int_register_parameters_c = 4, // rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) 39 n_float_register_parameters_c = 4, // xmm0 - xmm3 (c_farg0, c_farg1, ... ) 40#else 41 n_int_register_parameters_c = 6, // rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) 42 n_float_register_parameters_c = 8, // xmm0 - xmm7 (c_farg0, c_farg1, ... ) 43#endif // _WIN64 44 n_int_register_parameters_j = 6, // j_rarg0, j_rarg1, ... 45 n_float_register_parameters_j = 8 // j_farg0, j_farg1, ... 46#else 47 n_register_parameters = 0 // 0 registers used to pass arguments 48#endif // _LP64 49 }; 50}; 51 52 53#ifdef _LP64 54// Symbolically name the register arguments used by the c calling convention. 55// Windows is different from linux/solaris. So much for standards... 56 57#ifdef _WIN64 58 59REGISTER_DECLARATION(Register, c_rarg0, rcx); 60REGISTER_DECLARATION(Register, c_rarg1, rdx); 61REGISTER_DECLARATION(Register, c_rarg2, r8); 62REGISTER_DECLARATION(Register, c_rarg3, r9); 63 64REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0); 65REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1); 66REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2); 67REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3); 68 69#else 70 71REGISTER_DECLARATION(Register, c_rarg0, rdi); 72REGISTER_DECLARATION(Register, c_rarg1, rsi); 73REGISTER_DECLARATION(Register, c_rarg2, rdx); 74REGISTER_DECLARATION(Register, c_rarg3, rcx); 75REGISTER_DECLARATION(Register, c_rarg4, r8); 76REGISTER_DECLARATION(Register, c_rarg5, r9); 77 78REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0); 79REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1); 80REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2); 81REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3); 82REGISTER_DECLARATION(XMMRegister, c_farg4, xmm4); 83REGISTER_DECLARATION(XMMRegister, c_farg5, xmm5); 84REGISTER_DECLARATION(XMMRegister, c_farg6, xmm6); 85REGISTER_DECLARATION(XMMRegister, c_farg7, xmm7); 86 87#endif // _WIN64 88 89// Symbolically name the register arguments used by the Java calling convention. 90// We have control over the convention for java so we can do what we please. 91// What pleases us is to offset the java calling convention so that when 92// we call a suitable jni method the arguments are lined up and we don't 93// have to do little shuffling. A suitable jni method is non-static and a 94// small number of arguments (two fewer args on windows) 95// 96// |-------------------------------------------------------| 97// | c_rarg0 c_rarg1 c_rarg2 c_rarg3 c_rarg4 c_rarg5 | 98// |-------------------------------------------------------| 99// | rcx rdx r8 r9 rdi* rsi* | windows (* not a c_rarg) 100// | rdi rsi rdx rcx r8 r9 | solaris/linux 101// |-------------------------------------------------------| 102// | j_rarg5 j_rarg0 j_rarg1 j_rarg2 j_rarg3 j_rarg4 | 103// |-------------------------------------------------------| 104 105REGISTER_DECLARATION(Register, j_rarg0, c_rarg1); 106REGISTER_DECLARATION(Register, j_rarg1, c_rarg2); 107REGISTER_DECLARATION(Register, j_rarg2, c_rarg3); 108// Windows runs out of register args here 109#ifdef _WIN64 110REGISTER_DECLARATION(Register, j_rarg3, rdi); 111REGISTER_DECLARATION(Register, j_rarg4, rsi); 112#else 113REGISTER_DECLARATION(Register, j_rarg3, c_rarg4); 114REGISTER_DECLARATION(Register, j_rarg4, c_rarg5); 115#endif /* _WIN64 */ 116REGISTER_DECLARATION(Register, j_rarg5, c_rarg0); 117 118REGISTER_DECLARATION(XMMRegister, j_farg0, xmm0); 119REGISTER_DECLARATION(XMMRegister, j_farg1, xmm1); 120REGISTER_DECLARATION(XMMRegister, j_farg2, xmm2); 121REGISTER_DECLARATION(XMMRegister, j_farg3, xmm3); 122REGISTER_DECLARATION(XMMRegister, j_farg4, xmm4); 123REGISTER_DECLARATION(XMMRegister, j_farg5, xmm5); 124REGISTER_DECLARATION(XMMRegister, j_farg6, xmm6); 125REGISTER_DECLARATION(XMMRegister, j_farg7, xmm7); 126 127REGISTER_DECLARATION(Register, rscratch1, r10); // volatile 128REGISTER_DECLARATION(Register, rscratch2, r11); // volatile 129 130REGISTER_DECLARATION(Register, r12_heapbase, r12); // callee-saved 131REGISTER_DECLARATION(Register, r15_thread, r15); // callee-saved 132 133#else 134// rscratch1 will apear in 32bit code that is dead but of course must compile 135// Using noreg ensures if the dead code is incorrectly live and executed it 136// will cause an assertion failure 137#define rscratch1 noreg 138 139#endif // _LP64 140 141// JSR 292 fixed register usages: 142REGISTER_DECLARATION(Register, rbp_mh_SP_save, rbp); 143 144// Address is an abstraction used to represent a memory location 145// using any of the amd64 addressing modes with one object. 146// 147// Note: A register location is represented via a Register, not 148// via an address for efficiency & simplicity reasons. 149 150class ArrayAddress; 151 152class Address VALUE_OBJ_CLASS_SPEC { 153 public: 154 enum ScaleFactor { 155 no_scale = -1, 156 times_1 = 0, 157 times_2 = 1, 158 times_4 = 2, 159 times_8 = 3, 160 times_ptr = LP64_ONLY(times_8) NOT_LP64(times_4) 161 }; 162 static ScaleFactor times(int size) { 163 assert(size >= 1 && size <= 8 && is_power_of_2(size), "bad scale size"); 164 if (size == 8) return times_8; 165 if (size == 4) return times_4; 166 if (size == 2) return times_2; 167 return times_1; 168 } 169 static int scale_size(ScaleFactor scale) { 170 assert(scale != no_scale, ""); 171 assert(((1 << (int)times_1) == 1 && 172 (1 << (int)times_2) == 2 && 173 (1 << (int)times_4) == 4 && 174 (1 << (int)times_8) == 8), ""); 175 return (1 << (int)scale); 176 } 177 178 private: 179 Register _base; 180 Register _index; 181 ScaleFactor _scale; 182 int _disp; 183 RelocationHolder _rspec; 184 185 // Easily misused constructors make them private 186 // %%% can we make these go away? 187 NOT_LP64(Address(address loc, RelocationHolder spec);) 188 Address(int disp, address loc, relocInfo::relocType rtype); 189 Address(int disp, address loc, RelocationHolder spec); 190 191 public: 192 193 int disp() { return _disp; } 194 // creation 195 Address() 196 : _base(noreg), 197 _index(noreg), 198 _scale(no_scale), 199 _disp(0) { 200 } 201 202 // No default displacement otherwise Register can be implicitly 203 // converted to 0(Register) which is quite a different animal. 204 205 Address(Register base, int disp) 206 : _base(base), 207 _index(noreg), 208 _scale(no_scale), 209 _disp(disp) { 210 } 211 212 Address(Register base, Register index, ScaleFactor scale, int disp = 0) 213 : _base (base), 214 _index(index), 215 _scale(scale), 216 _disp (disp) { 217 assert(!index->is_valid() == (scale == Address::no_scale), 218 "inconsistent address"); 219 } 220 221 Address(Register base, RegisterOrConstant index, ScaleFactor scale = times_1, int disp = 0) 222 : _base (base), 223 _index(index.register_or_noreg()), 224 _scale(scale), 225 _disp (disp + (index.constant_or_zero() * scale_size(scale))) { 226 if (!index.is_register()) scale = Address::no_scale; 227 assert(!_index->is_valid() == (scale == Address::no_scale), 228 "inconsistent address"); 229 } 230 231 Address plus_disp(int disp) const { 232 Address a = (*this); 233 a._disp += disp; 234 return a; 235 } 236 237 // The following two overloads are used in connection with the 238 // ByteSize type (see sizes.hpp). They simplify the use of 239 // ByteSize'd arguments in assembly code. Note that their equivalent 240 // for the optimized build are the member functions with int disp 241 // argument since ByteSize is mapped to an int type in that case. 242 // 243 // Note: DO NOT introduce similar overloaded functions for WordSize 244 // arguments as in the optimized mode, both ByteSize and WordSize 245 // are mapped to the same type and thus the compiler cannot make a 246 // distinction anymore (=> compiler errors). 247 248#ifdef ASSERT 249 Address(Register base, ByteSize disp) 250 : _base(base), 251 _index(noreg), 252 _scale(no_scale), 253 _disp(in_bytes(disp)) { 254 } 255 256 Address(Register base, Register index, ScaleFactor scale, ByteSize disp) 257 : _base(base), 258 _index(index), 259 _scale(scale), 260 _disp(in_bytes(disp)) { 261 assert(!index->is_valid() == (scale == Address::no_scale), 262 "inconsistent address"); 263 } 264 265 Address(Register base, RegisterOrConstant index, ScaleFactor scale, ByteSize disp) 266 : _base (base), 267 _index(index.register_or_noreg()), 268 _scale(scale), 269 _disp (in_bytes(disp) + (index.constant_or_zero() * scale_size(scale))) { 270 if (!index.is_register()) scale = Address::no_scale; 271 assert(!_index->is_valid() == (scale == Address::no_scale), 272 "inconsistent address"); 273 } 274 275#endif // ASSERT 276 277 // accessors 278 bool uses(Register reg) const { return _base == reg || _index == reg; } 279 Register base() const { return _base; } 280 Register index() const { return _index; } 281 ScaleFactor scale() const { return _scale; } 282 int disp() const { return _disp; } 283 284 // Convert the raw encoding form into the form expected by the constructor for 285 // Address. An index of 4 (rsp) corresponds to having no index, so convert 286 // that to noreg for the Address constructor. 287 static Address make_raw(int base, int index, int scale, int disp, bool disp_is_oop); 288 289 static Address make_array(ArrayAddress); 290 291 private: 292 bool base_needs_rex() const { 293 return _base != noreg && _base->encoding() >= 8; 294 } 295 296 bool index_needs_rex() const { 297 return _index != noreg &&_index->encoding() >= 8; 298 } 299 300 relocInfo::relocType reloc() const { return _rspec.type(); } 301 302 friend class Assembler; 303 friend class MacroAssembler; 304 friend class LIR_Assembler; // base/index/scale/disp 305}; 306 307// 308// AddressLiteral has been split out from Address because operands of this type 309// need to be treated specially on 32bit vs. 64bit platforms. By splitting it out 310// the few instructions that need to deal with address literals are unique and the 311// MacroAssembler does not have to implement every instruction in the Assembler 312// in order to search for address literals that may need special handling depending 313// on the instruction and the platform. As small step on the way to merging i486/amd64 314// directories. 315// 316class AddressLiteral VALUE_OBJ_CLASS_SPEC { 317 friend class ArrayAddress; 318 RelocationHolder _rspec; 319 // Typically we use AddressLiterals we want to use their rval 320 // However in some situations we want the lval (effect address) of the item. 321 // We provide a special factory for making those lvals. 322 bool _is_lval; 323 324 // If the target is far we'll need to load the ea of this to 325 // a register to reach it. Otherwise if near we can do rip 326 // relative addressing. 327 328 address _target; 329 330 protected: 331 // creation 332 AddressLiteral() 333 : _is_lval(false), 334 _target(NULL) 335 {} 336 337 public: 338 339 340 AddressLiteral(address target, relocInfo::relocType rtype); 341 342 AddressLiteral(address target, RelocationHolder const& rspec) 343 : _rspec(rspec), 344 _is_lval(false), 345 _target(target) 346 {} 347 348 AddressLiteral addr() { 349 AddressLiteral ret = *this; 350 ret._is_lval = true; 351 return ret; 352 } 353 354 355 private: 356 357 address target() { return _target; } 358 bool is_lval() { return _is_lval; } 359 360 relocInfo::relocType reloc() const { return _rspec.type(); } 361 const RelocationHolder& rspec() const { return _rspec; } 362 363 friend class Assembler; 364 friend class MacroAssembler; 365 friend class Address; 366 friend class LIR_Assembler; 367}; 368 369// Convience classes 370class RuntimeAddress: public AddressLiteral { 371 372 public: 373 374 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {} 375 376}; 377 378class OopAddress: public AddressLiteral { 379 380 public: 381 382 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){} 383 384}; 385 386class ExternalAddress: public AddressLiteral { 387 388 public: 389 390 ExternalAddress(address target) : AddressLiteral(target, relocInfo::external_word_type){} 391 392}; 393 394class InternalAddress: public AddressLiteral { 395 396 public: 397 398 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {} 399 400}; 401 402// x86 can do array addressing as a single operation since disp can be an absolute 403// address amd64 can't. We create a class that expresses the concept but does extra 404// magic on amd64 to get the final result 405 406class ArrayAddress VALUE_OBJ_CLASS_SPEC { 407 private: 408 409 AddressLiteral _base; 410 Address _index; 411 412 public: 413 414 ArrayAddress() {}; 415 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {}; 416 AddressLiteral base() { return _base; } 417 Address index() { return _index; } 418 419}; 420 421const int FPUStateSizeInWords = NOT_LP64(27) LP64_ONLY( 512 / wordSize); 422 423// The Intel x86/Amd64 Assembler: Pure assembler doing NO optimizations on the instruction 424// level (e.g. mov rax, 0 is not translated into xor rax, rax!); i.e., what you write 425// is what you get. The Assembler is generating code into a CodeBuffer. 426 427class Assembler : public AbstractAssembler { 428 friend class AbstractAssembler; // for the non-virtual hack 429 friend class LIR_Assembler; // as_Address() 430 friend class StubGenerator; 431 432 public: 433 enum Condition { // The x86 condition codes used for conditional jumps/moves. 434 zero = 0x4, 435 notZero = 0x5, 436 equal = 0x4, 437 notEqual = 0x5, 438 less = 0xc, 439 lessEqual = 0xe, 440 greater = 0xf, 441 greaterEqual = 0xd, 442 below = 0x2, 443 belowEqual = 0x6, 444 above = 0x7, 445 aboveEqual = 0x3, 446 overflow = 0x0, 447 noOverflow = 0x1, 448 carrySet = 0x2, 449 carryClear = 0x3, 450 negative = 0x8, 451 positive = 0x9, 452 parity = 0xa, 453 noParity = 0xb 454 }; 455 456 enum Prefix { 457 // segment overrides 458 CS_segment = 0x2e, 459 SS_segment = 0x36, 460 DS_segment = 0x3e, 461 ES_segment = 0x26, 462 FS_segment = 0x64, 463 GS_segment = 0x65, 464 465 REX = 0x40, 466 467 REX_B = 0x41, 468 REX_X = 0x42, 469 REX_XB = 0x43, 470 REX_R = 0x44, 471 REX_RB = 0x45, 472 REX_RX = 0x46, 473 REX_RXB = 0x47, 474 475 REX_W = 0x48, 476 477 REX_WB = 0x49, 478 REX_WX = 0x4A, 479 REX_WXB = 0x4B, 480 REX_WR = 0x4C, 481 REX_WRB = 0x4D, 482 REX_WRX = 0x4E, 483 REX_WRXB = 0x4F 484 }; 485 486 enum WhichOperand { 487 // input to locate_operand, and format code for relocations 488 imm_operand = 0, // embedded 32-bit|64-bit immediate operand 489 disp32_operand = 1, // embedded 32-bit displacement or address 490 call32_operand = 2, // embedded 32-bit self-relative displacement 491#ifndef _LP64 492 _WhichOperand_limit = 3 493#else 494 narrow_oop_operand = 3, // embedded 32-bit immediate narrow oop 495 _WhichOperand_limit = 4 496#endif 497 }; 498 499 500 501 // NOTE: The general philopsophy of the declarations here is that 64bit versions 502 // of instructions are freely declared without the need for wrapping them an ifdef. 503 // (Some dangerous instructions are ifdef's out of inappropriate jvm's.) 504 // In the .cpp file the implementations are wrapped so that they are dropped out 505 // of the resulting jvm. This is done mostly to keep the footprint of KERNEL 506 // to the size it was prior to merging up the 32bit and 64bit assemblers. 507 // 508 // This does mean you'll get a linker/runtime error if you use a 64bit only instruction 509 // in a 32bit vm. This is somewhat unfortunate but keeps the ifdef noise down. 510 511private: 512 513 514 // 64bit prefixes 515 int prefix_and_encode(int reg_enc, bool byteinst = false); 516 int prefixq_and_encode(int reg_enc); 517 518 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false); 519 int prefixq_and_encode(int dst_enc, int src_enc); 520 521 void prefix(Register reg); 522 void prefix(Address adr); 523 void prefixq(Address adr); 524 525 void prefix(Address adr, Register reg, bool byteinst = false); 526 void prefixq(Address adr, Register reg); 527 528 void prefix(Address adr, XMMRegister reg); 529 530 void prefetch_prefix(Address src); 531 532 // Helper functions for groups of instructions 533 void emit_arith_b(int op1, int op2, Register dst, int imm8); 534 535 void emit_arith(int op1, int op2, Register dst, int32_t imm32); 536 // only 32bit?? 537 void emit_arith(int op1, int op2, Register dst, jobject obj); 538 void emit_arith(int op1, int op2, Register dst, Register src); 539 540 void emit_operand(Register reg, 541 Register base, Register index, Address::ScaleFactor scale, 542 int disp, 543 RelocationHolder const& rspec, 544 int rip_relative_correction = 0); 545 546 void emit_operand(Register reg, Address adr, int rip_relative_correction = 0); 547 548 // operands that only take the original 32bit registers 549 void emit_operand32(Register reg, Address adr); 550 551 void emit_operand(XMMRegister reg, 552 Register base, Register index, Address::ScaleFactor scale, 553 int disp, 554 RelocationHolder const& rspec); 555 556 void emit_operand(XMMRegister reg, Address adr); 557 558 void emit_operand(MMXRegister reg, Address adr); 559 560 // workaround gcc (3.2.1-7) bug 561 void emit_operand(Address adr, MMXRegister reg); 562 563 564 // Immediate-to-memory forms 565 void emit_arith_operand(int op1, Register rm, Address adr, int32_t imm32); 566 567 void emit_farith(int b1, int b2, int i); 568 569 570 protected: 571 #ifdef ASSERT 572 void check_relocation(RelocationHolder const& rspec, int format); 573 #endif 574 575 inline void emit_long64(jlong x); 576 577 void emit_data(jint data, relocInfo::relocType rtype, int format); 578 void emit_data(jint data, RelocationHolder const& rspec, int format); 579 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0); 580 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0); 581 582 583 bool reachable(AddressLiteral adr) NOT_LP64({ return true;}); 584 585 // These are all easily abused and hence protected 586 587 // 32BIT ONLY SECTION 588#ifndef _LP64 589 // Make these disappear in 64bit mode since they would never be correct 590 void cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY 591 void cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY 592 593 void mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY 594 void mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY 595 596 void push_literal32(int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY 597#else 598 // 64BIT ONLY SECTION 599 void mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec); // 64BIT ONLY 600 601 void cmp_narrow_oop(Register src1, int32_t imm32, RelocationHolder const& rspec); 602 void cmp_narrow_oop(Address src1, int32_t imm32, RelocationHolder const& rspec); 603 604 void mov_narrow_oop(Register dst, int32_t imm32, RelocationHolder const& rspec); 605 void mov_narrow_oop(Address dst, int32_t imm32, RelocationHolder const& rspec); 606#endif // _LP64 607 608 // These are unique in that we are ensured by the caller that the 32bit 609 // relative in these instructions will always be able to reach the potentially 610 // 64bit address described by entry. Since they can take a 64bit address they 611 // don't have the 32 suffix like the other instructions in this class. 612 613 void call_literal(address entry, RelocationHolder const& rspec); 614 void jmp_literal(address entry, RelocationHolder const& rspec); 615 616 // Avoid using directly section 617 // Instructions in this section are actually usable by anyone without danger 618 // of failure but have performance issues that are addressed my enhanced 619 // instructions which will do the proper thing base on the particular cpu. 620 // We protect them because we don't trust you... 621 622 // Don't use next inc() and dec() methods directly. INC & DEC instructions 623 // could cause a partial flag stall since they don't set CF flag. 624 // Use MacroAssembler::decrement() & MacroAssembler::increment() methods 625 // which call inc() & dec() or add() & sub() in accordance with 626 // the product flag UseIncDec value. 627 628 void decl(Register dst); 629 void decl(Address dst); 630 void decq(Register dst); 631 void decq(Address dst); 632 633 void incl(Register dst); 634 void incl(Address dst); 635 void incq(Register dst); 636 void incq(Address dst); 637 638 // New cpus require use of movsd and movss to avoid partial register stall 639 // when loading from memory. But for old Opteron use movlpd instead of movsd. 640 // The selection is done in MacroAssembler::movdbl() and movflt(). 641 642 // Move Scalar Single-Precision Floating-Point Values 643 void movss(XMMRegister dst, Address src); 644 void movss(XMMRegister dst, XMMRegister src); 645 void movss(Address dst, XMMRegister src); 646 647 // Move Scalar Double-Precision Floating-Point Values 648 void movsd(XMMRegister dst, Address src); 649 void movsd(XMMRegister dst, XMMRegister src); 650 void movsd(Address dst, XMMRegister src); 651 void movlpd(XMMRegister dst, Address src); 652 653 // New cpus require use of movaps and movapd to avoid partial register stall 654 // when moving between registers. 655 void movaps(XMMRegister dst, XMMRegister src); 656 void movapd(XMMRegister dst, XMMRegister src); 657 658 // End avoid using directly 659 660 661 // Instruction prefixes 662 void prefix(Prefix p); 663 664 public: 665 666 // Creation 667 Assembler(CodeBuffer* code) : AbstractAssembler(code) {} 668 669 // Decoding 670 static address locate_operand(address inst, WhichOperand which); 671 static address locate_next_instruction(address inst); 672 673 // Utilities 674 675#ifdef _LP64 676 static bool is_simm(int64_t x, int nbits) { return -( CONST64(1) << (nbits-1) ) <= x && x < ( CONST64(1) << (nbits-1) ); } 677 static bool is_simm32(int64_t x) { return x == (int64_t)(int32_t)x; } 678#else 679 static bool is_simm(int32_t x, int nbits) { return -( 1 << (nbits-1) ) <= x && x < ( 1 << (nbits-1) ); } 680 static bool is_simm32(int32_t x) { return true; } 681#endif // LP64 682 683 // Generic instructions 684 // Does 32bit or 64bit as needed for the platform. In some sense these 685 // belong in macro assembler but there is no need for both varieties to exist 686 687 void lea(Register dst, Address src); 688 689 void mov(Register dst, Register src); 690 691 void pusha(); 692 void popa(); 693 694 void pushf(); 695 void popf(); 696 697 void push(int32_t imm32); 698 699 void push(Register src); 700 701 void pop(Register dst); 702 703 // These are dummies to prevent surprise implicit conversions to Register 704 void push(void* v); 705 void pop(void* v); 706 707 708 // These do register sized moves/scans 709 void rep_mov(); 710 void rep_set(); 711 void repne_scan(); 712#ifdef _LP64 713 void repne_scanl(); 714#endif 715 716 // Vanilla instructions in lexical order 717 718 void adcl(Register dst, int32_t imm32); 719 void adcl(Register dst, Address src); 720 void adcl(Register dst, Register src); 721 722 void adcq(Register dst, int32_t imm32); 723 void adcq(Register dst, Address src); 724 void adcq(Register dst, Register src); 725 726 727 void addl(Address dst, int32_t imm32); 728 void addl(Address dst, Register src); 729 void addl(Register dst, int32_t imm32); 730 void addl(Register dst, Address src); 731 void addl(Register dst, Register src); 732 733 void addq(Address dst, int32_t imm32); 734 void addq(Address dst, Register src); 735 void addq(Register dst, int32_t imm32); 736 void addq(Register dst, Address src); 737 void addq(Register dst, Register src); 738 739 740 void addr_nop_4(); 741 void addr_nop_5(); 742 void addr_nop_7(); 743 void addr_nop_8(); 744 745 // Add Scalar Double-Precision Floating-Point Values 746 void addsd(XMMRegister dst, Address src); 747 void addsd(XMMRegister dst, XMMRegister src); 748 749 // Add Scalar Single-Precision Floating-Point Values 750 void addss(XMMRegister dst, Address src); 751 void addss(XMMRegister dst, XMMRegister src); 752 753 void andl(Register dst, int32_t imm32); 754 void andl(Register dst, Address src); 755 void andl(Register dst, Register src); 756 757 void andq(Register dst, int32_t imm32); 758 void andq(Register dst, Address src); 759 void andq(Register dst, Register src); 760 761 762 // Bitwise Logical AND of Packed Double-Precision Floating-Point Values 763 void andpd(XMMRegister dst, Address src); 764 void andpd(XMMRegister dst, XMMRegister src); 765 766 void bsfl(Register dst, Register src); 767 void bsrl(Register dst, Register src); 768 769#ifdef _LP64 770 void bsfq(Register dst, Register src); 771 void bsrq(Register dst, Register src); 772#endif 773 774 void bswapl(Register reg); 775 776 void bswapq(Register reg); 777 778 void call(Label& L, relocInfo::relocType rtype); 779 void call(Register reg); // push pc; pc <- reg 780 void call(Address adr); // push pc; pc <- adr 781 782 void cdql(); 783 784 void cdqq(); 785 786 void cld() { emit_byte(0xfc); } 787 788 void clflush(Address adr); 789 790 void cmovl(Condition cc, Register dst, Register src); 791 void cmovl(Condition cc, Register dst, Address src); 792 793 void cmovq(Condition cc, Register dst, Register src); 794 void cmovq(Condition cc, Register dst, Address src); 795 796 797 void cmpb(Address dst, int imm8); 798 799 void cmpl(Address dst, int32_t imm32); 800 801 void cmpl(Register dst, int32_t imm32); 802 void cmpl(Register dst, Register src); 803 void cmpl(Register dst, Address src); 804 805 void cmpq(Address dst, int32_t imm32); 806 void cmpq(Address dst, Register src); 807 808 void cmpq(Register dst, int32_t imm32); 809 void cmpq(Register dst, Register src); 810 void cmpq(Register dst, Address src); 811 812 // these are dummies used to catch attempting to convert NULL to Register 813 void cmpl(Register dst, void* junk); // dummy 814 void cmpq(Register dst, void* junk); // dummy 815 816 void cmpw(Address dst, int imm16); 817 818 void cmpxchg8 (Address adr); 819 820 void cmpxchgl(Register reg, Address adr); 821 822 void cmpxchgq(Register reg, Address adr); 823 824 // Ordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS 825 void comisd(XMMRegister dst, Address src); 826 827 // Ordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS 828 void comiss(XMMRegister dst, Address src); 829 830 // Identify processor type and features 831 void cpuid() { 832 emit_byte(0x0F); 833 emit_byte(0xA2); 834 } 835 836 // Convert Scalar Double-Precision Floating-Point Value to Scalar Single-Precision Floating-Point Value 837 void cvtsd2ss(XMMRegister dst, XMMRegister src); 838 839 // Convert Doubleword Integer to Scalar Double-Precision Floating-Point Value 840 void cvtsi2sdl(XMMRegister dst, Register src); 841 void cvtsi2sdq(XMMRegister dst, Register src); 842 843 // Convert Doubleword Integer to Scalar Single-Precision Floating-Point Value 844 void cvtsi2ssl(XMMRegister dst, Register src); 845 void cvtsi2ssq(XMMRegister dst, Register src); 846 847 // Convert Packed Signed Doubleword Integers to Packed Double-Precision Floating-Point Value 848 void cvtdq2pd(XMMRegister dst, XMMRegister src); 849 850 // Convert Packed Signed Doubleword Integers to Packed Single-Precision Floating-Point Value 851 void cvtdq2ps(XMMRegister dst, XMMRegister src); 852 853 // Convert Scalar Single-Precision Floating-Point Value to Scalar Double-Precision Floating-Point Value 854 void cvtss2sd(XMMRegister dst, XMMRegister src); 855 856 // Convert with Truncation Scalar Double-Precision Floating-Point Value to Doubleword Integer 857 void cvttsd2sil(Register dst, Address src); 858 void cvttsd2sil(Register dst, XMMRegister src); 859 void cvttsd2siq(Register dst, XMMRegister src); 860 861 // Convert with Truncation Scalar Single-Precision Floating-Point Value to Doubleword Integer 862 void cvttss2sil(Register dst, XMMRegister src); 863 void cvttss2siq(Register dst, XMMRegister src); 864 865 // Divide Scalar Double-Precision Floating-Point Values 866 void divsd(XMMRegister dst, Address src); 867 void divsd(XMMRegister dst, XMMRegister src); 868 869 // Divide Scalar Single-Precision Floating-Point Values 870 void divss(XMMRegister dst, Address src); 871 void divss(XMMRegister dst, XMMRegister src); 872 873 void emms(); 874 875 void fabs(); 876 877 void fadd(int i); 878 879 void fadd_d(Address src); 880 void fadd_s(Address src); 881 882 // "Alternate" versions of x87 instructions place result down in FPU 883 // stack instead of on TOS 884 885 void fadda(int i); // "alternate" fadd 886 void faddp(int i = 1); 887 888 void fchs(); 889 890 void fcom(int i); 891 892 void fcomp(int i = 1); 893 void fcomp_d(Address src); 894 void fcomp_s(Address src); 895 896 void fcompp(); 897 898 void fcos(); 899 900 void fdecstp(); 901 902 void fdiv(int i); 903 void fdiv_d(Address src); 904 void fdivr_s(Address src); 905 void fdiva(int i); // "alternate" fdiv 906 void fdivp(int i = 1); 907 908 void fdivr(int i); 909 void fdivr_d(Address src); 910 void fdiv_s(Address src); 911 912 void fdivra(int i); // "alternate" reversed fdiv 913 914 void fdivrp(int i = 1); 915 916 void ffree(int i = 0); 917 918 void fild_d(Address adr); 919 void fild_s(Address adr); 920 921 void fincstp(); 922 923 void finit(); 924 925 void fist_s (Address adr); 926 void fistp_d(Address adr); 927 void fistp_s(Address adr); 928 929 void fld1(); 930 931 void fld_d(Address adr); 932 void fld_s(Address adr); 933 void fld_s(int index); 934 void fld_x(Address adr); // extended-precision (80-bit) format 935 936 void fldcw(Address src); 937 938 void fldenv(Address src); 939 940 void fldlg2(); 941 942 void fldln2(); 943 944 void fldz(); 945 946 void flog(); 947 void flog10(); 948 949 void fmul(int i); 950 951 void fmul_d(Address src); 952 void fmul_s(Address src); 953 954 void fmula(int i); // "alternate" fmul 955 956 void fmulp(int i = 1); 957 958 void fnsave(Address dst); 959 960 void fnstcw(Address src); 961 962 void fnstsw_ax(); 963 964 void fprem(); 965 void fprem1(); 966 967 void frstor(Address src); 968 969 void fsin(); 970 971 void fsqrt(); 972 973 void fst_d(Address adr); 974 void fst_s(Address adr); 975 976 void fstp_d(Address adr); 977 void fstp_d(int index); 978 void fstp_s(Address adr); 979 void fstp_x(Address adr); // extended-precision (80-bit) format 980 981 void fsub(int i); 982 void fsub_d(Address src); 983 void fsub_s(Address src); 984 985 void fsuba(int i); // "alternate" fsub 986 987 void fsubp(int i = 1); 988 989 void fsubr(int i); 990 void fsubr_d(Address src); 991 void fsubr_s(Address src); 992 993 void fsubra(int i); // "alternate" reversed fsub 994 995 void fsubrp(int i = 1); 996 997 void ftan(); 998 999 void ftst(); 1000 1001 void fucomi(int i = 1); 1002 void fucomip(int i = 1); 1003 1004 void fwait(); 1005 1006 void fxch(int i = 1); 1007 1008 void fxrstor(Address src); 1009 1010 void fxsave(Address dst); 1011 1012 void fyl2x(); 1013 1014 void hlt(); 1015 1016 void idivl(Register src); 1017 void divl(Register src); // Unsigned division 1018 1019 void idivq(Register src); 1020 1021 void imull(Register dst, Register src); 1022 void imull(Register dst, Register src, int value); 1023 1024 void imulq(Register dst, Register src); 1025 void imulq(Register dst, Register src, int value); 1026 1027 1028 // jcc is the generic conditional branch generator to run- 1029 // time routines, jcc is used for branches to labels. jcc 1030 // takes a branch opcode (cc) and a label (L) and generates 1031 // either a backward branch or a forward branch and links it 1032 // to the label fixup chain. Usage: 1033 // 1034 // Label L; // unbound label 1035 // jcc(cc, L); // forward branch to unbound label 1036 // bind(L); // bind label to the current pc 1037 // jcc(cc, L); // backward branch to bound label 1038 // bind(L); // illegal: a label may be bound only once 1039 // 1040 // Note: The same Label can be used for forward and backward branches 1041 // but it may be bound only once. 1042 1043 void jcc(Condition cc, Label& L, 1044 relocInfo::relocType rtype = relocInfo::none); 1045 1046 // Conditional jump to a 8-bit offset to L. 1047 // WARNING: be very careful using this for forward jumps. If the label is 1048 // not bound within an 8-bit offset of this instruction, a run-time error 1049 // will occur. 1050 void jccb(Condition cc, Label& L); 1051 1052 void jmp(Address entry); // pc <- entry 1053 1054 // Label operations & relative jumps (PPUM Appendix D) 1055 void jmp(Label& L, relocInfo::relocType rtype = relocInfo::none); // unconditional jump to L 1056 1057 void jmp(Register entry); // pc <- entry 1058 1059 // Unconditional 8-bit offset jump to L. 1060 // WARNING: be very careful using this for forward jumps. If the label is 1061 // not bound within an 8-bit offset of this instruction, a run-time error 1062 // will occur. 1063 void jmpb(Label& L); 1064 1065 void ldmxcsr( Address src ); 1066 1067 void leal(Register dst, Address src); 1068 1069 void leaq(Register dst, Address src); 1070 1071 void lfence() { 1072 emit_byte(0x0F); 1073 emit_byte(0xAE); 1074 emit_byte(0xE8); 1075 } 1076 1077 void lock(); 1078 1079 void lzcntl(Register dst, Register src); 1080 1081#ifdef _LP64 1082 void lzcntq(Register dst, Register src); 1083#endif 1084 1085 enum Membar_mask_bits { 1086 StoreStore = 1 << 3, 1087 LoadStore = 1 << 2, 1088 StoreLoad = 1 << 1, 1089 LoadLoad = 1 << 0 1090 }; 1091 1092 // Serializes memory and blows flags 1093 void membar(Membar_mask_bits order_constraint) { 1094 if (os::is_MP()) { 1095 // We only have to handle StoreLoad 1096 if (order_constraint & StoreLoad) { 1097 // All usable chips support "locked" instructions which suffice 1098 // as barriers, and are much faster than the alternative of 1099 // using cpuid instruction. We use here a locked add [esp],0. 1100 // This is conveniently otherwise a no-op except for blowing 1101 // flags. 1102 // Any change to this code may need to revisit other places in 1103 // the code where this idiom is used, in particular the 1104 // orderAccess code. 1105 lock(); 1106 addl(Address(rsp, 0), 0);// Assert the lock# signal here 1107 } 1108 } 1109 } 1110 1111 void mfence(); 1112 1113 // Moves 1114 1115 void mov64(Register dst, int64_t imm64); 1116 1117 void movb(Address dst, Register src); 1118 void movb(Address dst, int imm8); 1119 void movb(Register dst, Address src); 1120 1121 void movdl(XMMRegister dst, Register src); 1122 void movdl(Register dst, XMMRegister src); 1123 1124 // Move Double Quadword 1125 void movdq(XMMRegister dst, Register src); 1126 void movdq(Register dst, XMMRegister src); 1127 1128 // Move Aligned Double Quadword 1129 void movdqa(Address dst, XMMRegister src); 1130 void movdqa(XMMRegister dst, Address src); 1131 void movdqa(XMMRegister dst, XMMRegister src); 1132 1133 // Move Unaligned Double Quadword 1134 void movdqu(Address dst, XMMRegister src); 1135 void movdqu(XMMRegister dst, Address src); 1136 void movdqu(XMMRegister dst, XMMRegister src); 1137 1138 void movl(Register dst, int32_t imm32); 1139 void movl(Address dst, int32_t imm32); 1140 void movl(Register dst, Register src); 1141 void movl(Register dst, Address src); 1142 void movl(Address dst, Register src); 1143 1144 // These dummies prevent using movl from converting a zero (like NULL) into Register 1145 // by giving the compiler two choices it can't resolve 1146 1147 void movl(Address dst, void* junk); 1148 void movl(Register dst, void* junk); 1149 1150#ifdef _LP64 1151 void movq(Register dst, Register src); 1152 void movq(Register dst, Address src); 1153 void movq(Address dst, Register src); 1154#endif 1155 1156 void movq(Address dst, MMXRegister src ); 1157 void movq(MMXRegister dst, Address src ); 1158 1159#ifdef _LP64 1160 // These dummies prevent using movq from converting a zero (like NULL) into Register 1161 // by giving the compiler two choices it can't resolve 1162 1163 void movq(Address dst, void* dummy); 1164 void movq(Register dst, void* dummy); 1165#endif 1166 1167 // Move Quadword 1168 void movq(Address dst, XMMRegister src); 1169 void movq(XMMRegister dst, Address src); 1170 1171 void movsbl(Register dst, Address src); 1172 void movsbl(Register dst, Register src); 1173 1174#ifdef _LP64 1175 void movsbq(Register dst, Address src); 1176 void movsbq(Register dst, Register src); 1177 1178 // Move signed 32bit immediate to 64bit extending sign 1179 void movslq(Address dst, int32_t imm64); 1180 void movslq(Register dst, int32_t imm64); 1181 1182 void movslq(Register dst, Address src); 1183 void movslq(Register dst, Register src); 1184 void movslq(Register dst, void* src); // Dummy declaration to cause NULL to be ambiguous 1185#endif 1186 1187 void movswl(Register dst, Address src); 1188 void movswl(Register dst, Register src); 1189 1190#ifdef _LP64 1191 void movswq(Register dst, Address src); 1192 void movswq(Register dst, Register src); 1193#endif 1194 1195 void movw(Address dst, int imm16); 1196 void movw(Register dst, Address src); 1197 void movw(Address dst, Register src); 1198 1199 void movzbl(Register dst, Address src); 1200 void movzbl(Register dst, Register src); 1201 1202#ifdef _LP64 1203 void movzbq(Register dst, Address src); 1204 void movzbq(Register dst, Register src); 1205#endif 1206 1207 void movzwl(Register dst, Address src); 1208 void movzwl(Register dst, Register src); 1209 1210#ifdef _LP64 1211 void movzwq(Register dst, Address src); 1212 void movzwq(Register dst, Register src); 1213#endif 1214 1215 void mull(Address src); 1216 void mull(Register src); 1217 1218 // Multiply Scalar Double-Precision Floating-Point Values 1219 void mulsd(XMMRegister dst, Address src); 1220 void mulsd(XMMRegister dst, XMMRegister src); 1221 1222 // Multiply Scalar Single-Precision Floating-Point Values 1223 void mulss(XMMRegister dst, Address src); 1224 void mulss(XMMRegister dst, XMMRegister src); 1225 1226 void negl(Register dst); 1227 1228#ifdef _LP64 1229 void negq(Register dst); 1230#endif 1231 1232 void nop(int i = 1); 1233 1234 void notl(Register dst); 1235 1236#ifdef _LP64 1237 void notq(Register dst); 1238#endif 1239 1240 void orl(Address dst, int32_t imm32); 1241 void orl(Register dst, int32_t imm32); 1242 void orl(Register dst, Address src); 1243 void orl(Register dst, Register src); 1244 1245 void orq(Address dst, int32_t imm32); 1246 void orq(Register dst, int32_t imm32); 1247 void orq(Register dst, Address src); 1248 void orq(Register dst, Register src); 1249 1250 // SSE4.2 string instructions 1251 void pcmpestri(XMMRegister xmm1, XMMRegister xmm2, int imm8); 1252 void pcmpestri(XMMRegister xmm1, Address src, int imm8); 1253 1254#ifndef _LP64 // no 32bit push/pop on amd64 1255 void popl(Address dst); 1256#endif 1257 1258#ifdef _LP64 1259 void popq(Address dst); 1260#endif 1261 1262 void popcntl(Register dst, Address src); 1263 void popcntl(Register dst, Register src); 1264 1265#ifdef _LP64 1266 void popcntq(Register dst, Address src); 1267 void popcntq(Register dst, Register src); 1268#endif 1269 1270 // Prefetches (SSE, SSE2, 3DNOW only) 1271 1272 void prefetchnta(Address src); 1273 void prefetchr(Address src); 1274 void prefetcht0(Address src); 1275 void prefetcht1(Address src); 1276 void prefetcht2(Address src); 1277 void prefetchw(Address src); 1278 1279 // Shuffle Packed Doublewords 1280 void pshufd(XMMRegister dst, XMMRegister src, int mode); 1281 void pshufd(XMMRegister dst, Address src, int mode); 1282 1283 // Shuffle Packed Low Words 1284 void pshuflw(XMMRegister dst, XMMRegister src, int mode); 1285 void pshuflw(XMMRegister dst, Address src, int mode); 1286 1287 // Shift Right Logical Quadword Immediate 1288 void psrlq(XMMRegister dst, int shift); 1289 1290 // Logical Compare Double Quadword 1291 void ptest(XMMRegister dst, XMMRegister src); 1292 void ptest(XMMRegister dst, Address src); 1293 1294 // Interleave Low Bytes 1295 void punpcklbw(XMMRegister dst, XMMRegister src); 1296 1297#ifndef _LP64 // no 32bit push/pop on amd64 1298 void pushl(Address src); 1299#endif 1300 1301 void pushq(Address src); 1302 1303 // Xor Packed Byte Integer Values 1304 void pxor(XMMRegister dst, Address src); 1305 void pxor(XMMRegister dst, XMMRegister src); 1306 1307 void rcll(Register dst, int imm8); 1308 1309 void rclq(Register dst, int imm8); 1310 1311 void ret(int imm16); 1312 1313 void sahf(); 1314 1315 void sarl(Register dst, int imm8); 1316 void sarl(Register dst); 1317 1318 void sarq(Register dst, int imm8); 1319 void sarq(Register dst); 1320 1321 void sbbl(Address dst, int32_t imm32); 1322 void sbbl(Register dst, int32_t imm32); 1323 void sbbl(Register dst, Address src); 1324 void sbbl(Register dst, Register src); 1325 1326 void sbbq(Address dst, int32_t imm32); 1327 void sbbq(Register dst, int32_t imm32); 1328 void sbbq(Register dst, Address src); 1329 void sbbq(Register dst, Register src); 1330 1331 void setb(Condition cc, Register dst); 1332 1333 void shldl(Register dst, Register src); 1334 1335 void shll(Register dst, int imm8); 1336 void shll(Register dst); 1337 1338 void shlq(Register dst, int imm8); 1339 void shlq(Register dst); 1340 1341 void shrdl(Register dst, Register src); 1342 1343 void shrl(Register dst, int imm8); 1344 void shrl(Register dst); 1345 1346 void shrq(Register dst, int imm8); 1347 void shrq(Register dst); 1348 1349 void smovl(); // QQQ generic? 1350 1351 // Compute Square Root of Scalar Double-Precision Floating-Point Value 1352 void sqrtsd(XMMRegister dst, Address src); 1353 void sqrtsd(XMMRegister dst, XMMRegister src); 1354 1355 void std() { emit_byte(0xfd); } 1356 1357 void stmxcsr( Address dst ); 1358 1359 void subl(Address dst, int32_t imm32); 1360 void subl(Address dst, Register src); 1361 void subl(Register dst, int32_t imm32); 1362 void subl(Register dst, Address src); 1363 void subl(Register dst, Register src); 1364 1365 void subq(Address dst, int32_t imm32); 1366 void subq(Address dst, Register src); 1367 void subq(Register dst, int32_t imm32); 1368 void subq(Register dst, Address src); 1369 void subq(Register dst, Register src); 1370 1371 1372 // Subtract Scalar Double-Precision Floating-Point Values 1373 void subsd(XMMRegister dst, Address src); 1374 void subsd(XMMRegister dst, XMMRegister src); 1375 1376 // Subtract Scalar Single-Precision Floating-Point Values 1377 void subss(XMMRegister dst, Address src); 1378 void subss(XMMRegister dst, XMMRegister src); 1379 1380 void testb(Register dst, int imm8); 1381 1382 void testl(Register dst, int32_t imm32); 1383 void testl(Register dst, Register src); 1384 void testl(Register dst, Address src); 1385 1386 void testq(Register dst, int32_t imm32); 1387 void testq(Register dst, Register src); 1388 1389 1390 // Unordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS 1391 void ucomisd(XMMRegister dst, Address src); 1392 void ucomisd(XMMRegister dst, XMMRegister src); 1393 1394 // Unordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS 1395 void ucomiss(XMMRegister dst, Address src); 1396 void ucomiss(XMMRegister dst, XMMRegister src); 1397 1398 void xaddl(Address dst, Register src); 1399 1400 void xaddq(Address dst, Register src); 1401 1402 void xchgl(Register reg, Address adr); 1403 void xchgl(Register dst, Register src); 1404 1405 void xchgq(Register reg, Address adr); 1406 void xchgq(Register dst, Register src); 1407 1408 void xorl(Register dst, int32_t imm32); 1409 void xorl(Register dst, Address src); 1410 void xorl(Register dst, Register src); 1411 1412 void xorq(Register dst, Address src); 1413 void xorq(Register dst, Register src); 1414 1415 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values 1416 void xorpd(XMMRegister dst, Address src); 1417 void xorpd(XMMRegister dst, XMMRegister src); 1418 1419 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values 1420 void xorps(XMMRegister dst, Address src); 1421 void xorps(XMMRegister dst, XMMRegister src); 1422 1423 void set_byte_if_not_zero(Register dst); // sets reg to 1 if not zero, otherwise 0 1424}; 1425 1426 1427// MacroAssembler extends Assembler by frequently used macros. 1428// 1429// Instructions for which a 'better' code sequence exists depending 1430// on arguments should also go in here. 1431 1432class MacroAssembler: public Assembler { 1433 friend class LIR_Assembler; 1434 friend class Runtime1; // as_Address() 1435 protected: 1436 1437 Address as_Address(AddressLiteral adr); 1438 Address as_Address(ArrayAddress adr); 1439 1440 // Support for VM calls 1441 // 1442 // This is the base routine called by the different versions of call_VM_leaf. The interpreter 1443 // may customize this version by overriding it for its purposes (e.g., to save/restore 1444 // additional registers when doing a VM call). 1445#ifdef CC_INTERP 1446 // c++ interpreter never wants to use interp_masm version of call_VM 1447 #define VIRTUAL 1448#else 1449 #define VIRTUAL virtual 1450#endif 1451 1452 VIRTUAL void call_VM_leaf_base( 1453 address entry_point, // the entry point 1454 int number_of_arguments // the number of arguments to pop after the call 1455 ); 1456 1457 // This is the base routine called by the different versions of call_VM. The interpreter 1458 // may customize this version by overriding it for its purposes (e.g., to save/restore 1459 // additional registers when doing a VM call). 1460 // 1461 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base 1462 // returns the register which contains the thread upon return. If a thread register has been 1463 // specified, the return value will correspond to that register. If no last_java_sp is specified 1464 // (noreg) than rsp will be used instead. 1465 VIRTUAL void call_VM_base( // returns the register containing the thread upon return 1466 Register oop_result, // where an oop-result ends up if any; use noreg otherwise 1467 Register java_thread, // the thread if computed before ; use noreg otherwise 1468 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise 1469 address entry_point, // the entry point 1470 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call 1471 bool check_exceptions // whether to check for pending exceptions after return 1472 ); 1473 1474 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code. 1475 // The implementation is only non-empty for the InterpreterMacroAssembler, 1476 // as only the interpreter handles PopFrame and ForceEarlyReturn requests. 1477 virtual void check_and_handle_popframe(Register java_thread); 1478 virtual void check_and_handle_earlyret(Register java_thread); 1479 1480 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true); 1481 1482 // helpers for FPU flag access 1483 // tmp is a temporary register, if none is available use noreg 1484 void save_rax (Register tmp); 1485 void restore_rax(Register tmp); 1486 1487 public: 1488 MacroAssembler(CodeBuffer* code) : Assembler(code) {} 1489 1490 // Support for NULL-checks 1491 // 1492 // Generates code that causes a NULL OS exception if the content of reg is NULL. 1493 // If the accessed location is M[reg + offset] and the offset is known, provide the 1494 // offset. No explicit code generation is needed if the offset is within a certain 1495 // range (0 <= offset <= page_size). 1496 1497 void null_check(Register reg, int offset = -1); 1498 static bool needs_explicit_null_check(intptr_t offset); 1499 1500 // Required platform-specific helpers for Label::patch_instructions. 1501 // They _shadow_ the declarations in AbstractAssembler, which are undefined. 1502 void pd_patch_instruction(address branch, address target); 1503#ifndef PRODUCT 1504 static void pd_print_patched_instruction(address branch); 1505#endif 1506 1507 // The following 4 methods return the offset of the appropriate move instruction 1508 1509 // Support for fast byte/short loading with zero extension (depending on particular CPU) 1510 int load_unsigned_byte(Register dst, Address src); 1511 int load_unsigned_short(Register dst, Address src); 1512 1513 // Support for fast byte/short loading with sign extension (depending on particular CPU) 1514 int load_signed_byte(Register dst, Address src); 1515 int load_signed_short(Register dst, Address src); 1516 1517 // Support for sign-extension (hi:lo = extend_sign(lo)) 1518 void extend_sign(Register hi, Register lo); 1519 1520 // Loading values by size and signed-ness 1521 void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed); 1522 1523 // Support for inc/dec with optimal instruction selection depending on value 1524 1525 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; } 1526 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; } 1527 1528 void decrementl(Address dst, int value = 1); 1529 void decrementl(Register reg, int value = 1); 1530 1531 void decrementq(Register reg, int value = 1); 1532 void decrementq(Address dst, int value = 1); 1533 1534 void incrementl(Address dst, int value = 1); 1535 void incrementl(Register reg, int value = 1); 1536 1537 void incrementq(Register reg, int value = 1); 1538 void incrementq(Address dst, int value = 1); 1539 1540 1541 // Support optimal SSE move instructions. 1542 void movflt(XMMRegister dst, XMMRegister src) { 1543 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; } 1544 else { movss (dst, src); return; } 1545 } 1546 void movflt(XMMRegister dst, Address src) { movss(dst, src); } 1547 void movflt(XMMRegister dst, AddressLiteral src); 1548 void movflt(Address dst, XMMRegister src) { movss(dst, src); } 1549 1550 void movdbl(XMMRegister dst, XMMRegister src) { 1551 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; } 1552 else { movsd (dst, src); return; } 1553 } 1554 1555 void movdbl(XMMRegister dst, AddressLiteral src); 1556 1557 void movdbl(XMMRegister dst, Address src) { 1558 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; } 1559 else { movlpd(dst, src); return; } 1560 } 1561 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); } 1562 1563 void incrementl(AddressLiteral dst); 1564 void incrementl(ArrayAddress dst); 1565 1566 // Alignment 1567 void align(int modulus); 1568 1569 // Misc 1570 void fat_nop(); // 5 byte nop 1571 1572 // Stack frame creation/removal 1573 void enter(); 1574 void leave(); 1575 1576 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information) 1577 // The pointer will be loaded into the thread register. 1578 void get_thread(Register thread); 1579 1580 1581 // Support for VM calls 1582 // 1583 // It is imperative that all calls into the VM are handled via the call_VM macros. 1584 // They make sure that the stack linkage is setup correctly. call_VM's correspond 1585 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points. 1586 1587 1588 void call_VM(Register oop_result, 1589 address entry_point, 1590 bool check_exceptions = true); 1591 void call_VM(Register oop_result, 1592 address entry_point, 1593 Register arg_1, 1594 bool check_exceptions = true); 1595 void call_VM(Register oop_result, 1596 address entry_point, 1597 Register arg_1, Register arg_2, 1598 bool check_exceptions = true); 1599 void call_VM(Register oop_result, 1600 address entry_point, 1601 Register arg_1, Register arg_2, Register arg_3, 1602 bool check_exceptions = true); 1603 1604 // Overloadings with last_Java_sp 1605 void call_VM(Register oop_result, 1606 Register last_java_sp, 1607 address entry_point, 1608 int number_of_arguments = 0, 1609 bool check_exceptions = true); 1610 void call_VM(Register oop_result, 1611 Register last_java_sp, 1612 address entry_point, 1613 Register arg_1, bool 1614 check_exceptions = true); 1615 void call_VM(Register oop_result, 1616 Register last_java_sp, 1617 address entry_point, 1618 Register arg_1, Register arg_2, 1619 bool check_exceptions = true); 1620 void call_VM(Register oop_result, 1621 Register last_java_sp, 1622 address entry_point, 1623 Register arg_1, Register arg_2, Register arg_3, 1624 bool check_exceptions = true); 1625 1626 void call_VM_leaf(address entry_point, 1627 int number_of_arguments = 0); 1628 void call_VM_leaf(address entry_point, 1629 Register arg_1); 1630 void call_VM_leaf(address entry_point, 1631 Register arg_1, Register arg_2); 1632 void call_VM_leaf(address entry_point, 1633 Register arg_1, Register arg_2, Register arg_3); 1634 1635 // last Java Frame (fills frame anchor) 1636 void set_last_Java_frame(Register thread, 1637 Register last_java_sp, 1638 Register last_java_fp, 1639 address last_java_pc); 1640 1641 // thread in the default location (r15_thread on 64bit) 1642 void set_last_Java_frame(Register last_java_sp, 1643 Register last_java_fp, 1644 address last_java_pc); 1645 1646 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc); 1647 1648 // thread in the default location (r15_thread on 64bit) 1649 void reset_last_Java_frame(bool clear_fp, bool clear_pc); 1650 1651 // Stores 1652 void store_check(Register obj); // store check for obj - register is destroyed afterwards 1653 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed) 1654 1655 void g1_write_barrier_pre(Register obj, 1656#ifndef _LP64 1657 Register thread, 1658#endif 1659 Register tmp, 1660 Register tmp2, 1661 bool tosca_live); 1662 void g1_write_barrier_post(Register store_addr, 1663 Register new_val, 1664#ifndef _LP64 1665 Register thread, 1666#endif 1667 Register tmp, 1668 Register tmp2); 1669 1670 1671 // split store_check(Register obj) to enhance instruction interleaving 1672 void store_check_part_1(Register obj); 1673 void store_check_part_2(Register obj); 1674 1675 // C 'boolean' to Java boolean: x == 0 ? 0 : 1 1676 void c2bool(Register x); 1677 1678 // C++ bool manipulation 1679 1680 void movbool(Register dst, Address src); 1681 void movbool(Address dst, bool boolconst); 1682 void movbool(Address dst, Register src); 1683 void testbool(Register dst); 1684 1685 // oop manipulations 1686 void load_klass(Register dst, Register src); 1687 void store_klass(Register dst, Register src); 1688 1689 void load_heap_oop(Register dst, Address src); 1690 void store_heap_oop(Address dst, Register src); 1691 1692 // Used for storing NULL. All other oop constants should be 1693 // stored using routines that take a jobject. 1694 void store_heap_oop_null(Address dst); 1695 1696 void load_prototype_header(Register dst, Register src); 1697 1698#ifdef _LP64 1699 void store_klass_gap(Register dst, Register src); 1700 1701 // This dummy is to prevent a call to store_heap_oop from 1702 // converting a zero (like NULL) into a Register by giving 1703 // the compiler two choices it can't resolve 1704 1705 void store_heap_oop(Address dst, void* dummy); 1706 1707 void encode_heap_oop(Register r); 1708 void decode_heap_oop(Register r); 1709 void encode_heap_oop_not_null(Register r); 1710 void decode_heap_oop_not_null(Register r); 1711 void encode_heap_oop_not_null(Register dst, Register src); 1712 void decode_heap_oop_not_null(Register dst, Register src); 1713 1714 void set_narrow_oop(Register dst, jobject obj); 1715 void set_narrow_oop(Address dst, jobject obj); 1716 void cmp_narrow_oop(Register dst, jobject obj); 1717 void cmp_narrow_oop(Address dst, jobject obj); 1718 1719 // if heap base register is used - reinit it with the correct value 1720 void reinit_heapbase(); 1721 1722 DEBUG_ONLY(void verify_heapbase(const char* msg);) 1723 1724#endif // _LP64 1725 1726 // Int division/remainder for Java 1727 // (as idivl, but checks for special case as described in JVM spec.) 1728 // returns idivl instruction offset for implicit exception handling 1729 int corrected_idivl(Register reg); 1730 1731 // Long division/remainder for Java 1732 // (as idivq, but checks for special case as described in JVM spec.) 1733 // returns idivq instruction offset for implicit exception handling 1734 int corrected_idivq(Register reg); 1735 1736 void int3(); 1737 1738 // Long operation macros for a 32bit cpu 1739 // Long negation for Java 1740 void lneg(Register hi, Register lo); 1741 1742 // Long multiplication for Java 1743 // (destroys contents of eax, ebx, ecx and edx) 1744 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y 1745 1746 // Long shifts for Java 1747 // (semantics as described in JVM spec.) 1748 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f) 1749 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f) 1750 1751 // Long compare for Java 1752 // (semantics as described in JVM spec.) 1753 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y) 1754 1755 1756 // misc 1757 1758 // Sign extension 1759 void sign_extend_short(Register reg); 1760 void sign_extend_byte(Register reg); 1761 1762 // Division by power of 2, rounding towards 0 1763 void division_with_shift(Register reg, int shift_value); 1764 1765 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows: 1766 // 1767 // CF (corresponds to C0) if x < y 1768 // PF (corresponds to C2) if unordered 1769 // ZF (corresponds to C3) if x = y 1770 // 1771 // The arguments are in reversed order on the stack (i.e., top of stack is first argument). 1772 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code) 1773 void fcmp(Register tmp); 1774 // Variant of the above which allows y to be further down the stack 1775 // and which only pops x and y if specified. If pop_right is 1776 // specified then pop_left must also be specified. 1777 void fcmp(Register tmp, int index, bool pop_left, bool pop_right); 1778 1779 // Floating-point comparison for Java 1780 // Compares the top-most stack entries on the FPU stack and stores the result in dst. 1781 // The arguments are in reversed order on the stack (i.e., top of stack is first argument). 1782 // (semantics as described in JVM spec.) 1783 void fcmp2int(Register dst, bool unordered_is_less); 1784 // Variant of the above which allows y to be further down the stack 1785 // and which only pops x and y if specified. If pop_right is 1786 // specified then pop_left must also be specified. 1787 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right); 1788 1789 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards) 1790 // tmp is a temporary register, if none is available use noreg 1791 void fremr(Register tmp); 1792 1793 1794 // same as fcmp2int, but using SSE2 1795 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less); 1796 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less); 1797 1798 // Inlined sin/cos generator for Java; must not use CPU instruction 1799 // directly on Intel as it does not have high enough precision 1800 // outside of the range [-pi/4, pi/4]. Extra argument indicate the 1801 // number of FPU stack slots in use; all but the topmost will 1802 // require saving if a slow case is necessary. Assumes argument is 1803 // on FP TOS; result is on FP TOS. No cpu registers are changed by 1804 // this code. 1805 void trigfunc(char trig, int num_fpu_regs_in_use = 1); 1806 1807 // branch to L if FPU flag C2 is set/not set 1808 // tmp is a temporary register, if none is available use noreg 1809 void jC2 (Register tmp, Label& L); 1810 void jnC2(Register tmp, Label& L); 1811 1812 // Pop ST (ffree & fincstp combined) 1813 void fpop(); 1814 1815 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack 1816 void push_fTOS(); 1817 1818 // pops double TOS element from CPU stack and pushes on FPU stack 1819 void pop_fTOS(); 1820 1821 void empty_FPU_stack(); 1822 1823 void push_IU_state(); 1824 void pop_IU_state(); 1825 1826 void push_FPU_state(); 1827 void pop_FPU_state(); 1828 1829 void push_CPU_state(); 1830 void pop_CPU_state(); 1831 1832 // Round up to a power of two 1833 void round_to(Register reg, int modulus); 1834 1835 // Callee saved registers handling 1836 void push_callee_saved_registers(); 1837 void pop_callee_saved_registers(); 1838 1839 // allocation 1840 void eden_allocate( 1841 Register obj, // result: pointer to object after successful allocation 1842 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise 1843 int con_size_in_bytes, // object size in bytes if known at compile time 1844 Register t1, // temp register 1845 Label& slow_case // continuation point if fast allocation fails 1846 ); 1847 void tlab_allocate( 1848 Register obj, // result: pointer to object after successful allocation 1849 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise 1850 int con_size_in_bytes, // object size in bytes if known at compile time 1851 Register t1, // temp register 1852 Register t2, // temp register 1853 Label& slow_case // continuation point if fast allocation fails 1854 ); 1855 void tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); 1856 1857 // interface method calling 1858 void lookup_interface_method(Register recv_klass, 1859 Register intf_klass, 1860 RegisterOrConstant itable_index, 1861 Register method_result, 1862 Register scan_temp, 1863 Label& no_such_interface); 1864 1865 // Test sub_klass against super_klass, with fast and slow paths. 1866 1867 // The fast path produces a tri-state answer: yes / no / maybe-slow. 1868 // One of the three labels can be NULL, meaning take the fall-through. 1869 // If super_check_offset is -1, the value is loaded up from super_klass. 1870 // No registers are killed, except temp_reg. 1871 void check_klass_subtype_fast_path(Register sub_klass, 1872 Register super_klass, 1873 Register temp_reg, 1874 Label* L_success, 1875 Label* L_failure, 1876 Label* L_slow_path, 1877 RegisterOrConstant super_check_offset = RegisterOrConstant(-1)); 1878 1879 // The rest of the type check; must be wired to a corresponding fast path. 1880 // It does not repeat the fast path logic, so don't use it standalone. 1881 // The temp_reg and temp2_reg can be noreg, if no temps are available. 1882 // Updates the sub's secondary super cache as necessary. 1883 // If set_cond_codes, condition codes will be Z on success, NZ on failure. 1884 void check_klass_subtype_slow_path(Register sub_klass, 1885 Register super_klass, 1886 Register temp_reg, 1887 Register temp2_reg, 1888 Label* L_success, 1889 Label* L_failure, 1890 bool set_cond_codes = false); 1891 1892 // Simplified, combined version, good for typical uses. 1893 // Falls through on failure. 1894 void check_klass_subtype(Register sub_klass, 1895 Register super_klass, 1896 Register temp_reg, 1897 Label& L_success); 1898 1899 // method handles (JSR 292) 1900 void check_method_handle_type(Register mtype_reg, Register mh_reg, 1901 Register temp_reg, 1902 Label& wrong_method_type); 1903 void load_method_handle_vmslots(Register vmslots_reg, Register mh_reg, 1904 Register temp_reg); 1905 void jump_to_method_handle_entry(Register mh_reg, Register temp_reg); 1906 Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0); 1907 1908 1909 //---- 1910 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0 1911 1912 // Debugging 1913 1914 // only if +VerifyOops 1915 void verify_oop(Register reg, const char* s = "broken oop"); 1916 void verify_oop_addr(Address addr, const char * s = "broken oop addr"); 1917 1918 // only if +VerifyFPU 1919 void verify_FPU(int stack_depth, const char* s = "illegal FPU state"); 1920 1921 // prints msg, dumps registers and stops execution 1922 void stop(const char* msg); 1923 1924 // prints msg and continues 1925 void warn(const char* msg); 1926 1927 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg); 1928 static void debug64(char* msg, int64_t pc, int64_t regs[]); 1929 1930 void os_breakpoint(); 1931 1932 void untested() { stop("untested"); } 1933 1934 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, 1024, "unimplemented: %s", what); stop(b); } 1935 1936 void should_not_reach_here() { stop("should not reach here"); } 1937 1938 void print_CPU_state(); 1939 1940 // Stack overflow checking 1941 void bang_stack_with_offset(int offset) { 1942 // stack grows down, caller passes positive offset 1943 assert(offset > 0, "must bang with negative offset"); 1944 movl(Address(rsp, (-offset)), rax); 1945 } 1946 1947 // Writes to stack successive pages until offset reached to check for 1948 // stack overflow + shadow pages. Also, clobbers tmp 1949 void bang_stack_size(Register size, Register tmp); 1950 1951 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, 1952 Register tmp, 1953 int offset); 1954 1955 // Support for serializing memory accesses between threads 1956 void serialize_memory(Register thread, Register tmp); 1957 1958 void verify_tlab(); 1959 1960 // Biased locking support 1961 // lock_reg and obj_reg must be loaded up with the appropriate values. 1962 // swap_reg must be rax, and is killed. 1963 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will 1964 // be killed; if not supplied, push/pop will be used internally to 1965 // allocate a temporary (inefficient, avoid if possible). 1966 // Optional slow case is for implementations (interpreter and C1) which branch to 1967 // slow case directly. Leaves condition codes set for C2's Fast_Lock node. 1968 // Returns offset of first potentially-faulting instruction for null 1969 // check info (currently consumed only by C1). If 1970 // swap_reg_contains_mark is true then returns -1 as it is assumed 1971 // the calling code has already passed any potential faults. 1972 int biased_locking_enter(Register lock_reg, Register obj_reg, 1973 Register swap_reg, Register tmp_reg, 1974 bool swap_reg_contains_mark, 1975 Label& done, Label* slow_case = NULL, 1976 BiasedLockingCounters* counters = NULL); 1977 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done); 1978 1979 1980 Condition negate_condition(Condition cond); 1981 1982 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit 1983 // operands. In general the names are modified to avoid hiding the instruction in Assembler 1984 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers 1985 // here in MacroAssembler. The major exception to this rule is call 1986 1987 // Arithmetics 1988 1989 1990 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; } 1991 void addptr(Address dst, Register src); 1992 1993 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); } 1994 void addptr(Register dst, int32_t src); 1995 void addptr(Register dst, Register src); 1996 1997 void andptr(Register dst, int32_t src); 1998 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; } 1999 2000 void cmp8(AddressLiteral src1, int imm); 2001 2002 // renamed to drag out the casting of address to int32_t/intptr_t 2003 void cmp32(Register src1, int32_t imm); 2004 2005 void cmp32(AddressLiteral src1, int32_t imm); 2006 // compare reg - mem, or reg - &mem 2007 void cmp32(Register src1, AddressLiteral src2); 2008 2009 void cmp32(Register src1, Address src2); 2010 2011#ifndef _LP64 2012 void cmpoop(Address dst, jobject obj); 2013 void cmpoop(Register dst, jobject obj); 2014#endif // _LP64 2015 2016 // NOTE src2 must be the lval. This is NOT an mem-mem compare 2017 void cmpptr(Address src1, AddressLiteral src2); 2018 2019 void cmpptr(Register src1, AddressLiteral src2); 2020 2021 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } 2022 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } 2023 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } 2024 2025 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } 2026 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; } 2027 2028 // cmp64 to avoild hiding cmpq 2029 void cmp64(Register src1, AddressLiteral src); 2030 2031 void cmpxchgptr(Register reg, Address adr); 2032 2033 void locked_cmpxchgptr(Register reg, AddressLiteral adr); 2034 2035 2036 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); } 2037 2038 2039 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); } 2040 2041 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); } 2042 2043 void shlptr(Register dst, int32_t shift); 2044 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); } 2045 2046 void shrptr(Register dst, int32_t shift); 2047 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); } 2048 2049 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); } 2050 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); } 2051 2052 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); } 2053 2054 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); } 2055 void subptr(Register dst, int32_t src); 2056 void subptr(Register dst, Register src); 2057 2058 2059 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); } 2060 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); } 2061 2062 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; } 2063 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; } 2064 2065 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; } 2066 2067 2068 2069 // Helper functions for statistics gathering. 2070 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes. 2071 void cond_inc32(Condition cond, AddressLiteral counter_addr); 2072 // Unconditional atomic increment. 2073 void atomic_incl(AddressLiteral counter_addr); 2074 2075 void lea(Register dst, AddressLiteral adr); 2076 void lea(Address dst, AddressLiteral adr); 2077 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); } 2078 2079 void leal32(Register dst, Address src) { leal(dst, src); } 2080 2081 void test32(Register src1, AddressLiteral src2); 2082 2083 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } 2084 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } 2085 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); } 2086 2087 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); } 2088 void testptr(Register src1, Register src2); 2089 2090 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); } 2091 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); } 2092 2093 // Calls 2094 2095 void call(Label& L, relocInfo::relocType rtype); 2096 void call(Register entry); 2097 2098 // NOTE: this call tranfers to the effective address of entry NOT 2099 // the address contained by entry. This is because this is more natural 2100 // for jumps/calls. 2101 void call(AddressLiteral entry); 2102 2103 // Jumps 2104 2105 // NOTE: these jumps tranfer to the effective address of dst NOT 2106 // the address contained by dst. This is because this is more natural 2107 // for jumps/calls. 2108 void jump(AddressLiteral dst); 2109 void jump_cc(Condition cc, AddressLiteral dst); 2110 2111 // 32bit can do a case table jump in one instruction but we no longer allow the base 2112 // to be installed in the Address class. This jump will tranfers to the address 2113 // contained in the location described by entry (not the address of entry) 2114 void jump(ArrayAddress entry); 2115 2116 // Floating 2117 2118 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); } 2119 void andpd(XMMRegister dst, AddressLiteral src); 2120 2121 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); } 2122 void comiss(XMMRegister dst, AddressLiteral src); 2123 2124 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); } 2125 void comisd(XMMRegister dst, AddressLiteral src); 2126 2127 void fldcw(Address src) { Assembler::fldcw(src); } 2128 void fldcw(AddressLiteral src); 2129 2130 void fld_s(int index) { Assembler::fld_s(index); } 2131 void fld_s(Address src) { Assembler::fld_s(src); } 2132 void fld_s(AddressLiteral src); 2133 2134 void fld_d(Address src) { Assembler::fld_d(src); } 2135 void fld_d(AddressLiteral src); 2136 2137 void fld_x(Address src) { Assembler::fld_x(src); } 2138 void fld_x(AddressLiteral src); 2139 2140 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); } 2141 void ldmxcsr(AddressLiteral src); 2142 2143private: 2144 // these are private because users should be doing movflt/movdbl 2145 2146 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); } 2147 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); } 2148 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); } 2149 void movss(XMMRegister dst, AddressLiteral src); 2150 2151 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); } 2152 void movlpd(XMMRegister dst, AddressLiteral src); 2153 2154public: 2155 2156 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); } 2157 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); } 2158 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); } 2159 void movsd(XMMRegister dst, AddressLiteral src); 2160 2161 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); } 2162 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); } 2163 void ucomiss(XMMRegister dst, AddressLiteral src); 2164 2165 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); } 2166 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); } 2167 void ucomisd(XMMRegister dst, AddressLiteral src); 2168 2169 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values 2170 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); } 2171 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); } 2172 void xorpd(XMMRegister dst, AddressLiteral src); 2173 2174 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values 2175 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); } 2176 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); } 2177 void xorps(XMMRegister dst, AddressLiteral src); 2178 2179 // Data 2180 2181 void cmov(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); } 2182 2183 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); } 2184 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); } 2185 2186 void movoop(Register dst, jobject obj); 2187 void movoop(Address dst, jobject obj); 2188 2189 void movptr(ArrayAddress dst, Register src); 2190 // can this do an lea? 2191 void movptr(Register dst, ArrayAddress src); 2192 2193 void movptr(Register dst, Address src); 2194 2195 void movptr(Register dst, AddressLiteral src); 2196 2197 void movptr(Register dst, intptr_t src); 2198 void movptr(Register dst, Register src); 2199 void movptr(Address dst, intptr_t src); 2200 2201 void movptr(Address dst, Register src); 2202 2203#ifdef _LP64 2204 // Generally the next two are only used for moving NULL 2205 // Although there are situations in initializing the mark word where 2206 // they could be used. They are dangerous. 2207 2208 // They only exist on LP64 so that int32_t and intptr_t are not the same 2209 // and we have ambiguous declarations. 2210 2211 void movptr(Address dst, int32_t imm32); 2212 void movptr(Register dst, int32_t imm32); 2213#endif // _LP64 2214 2215 // to avoid hiding movl 2216 void mov32(AddressLiteral dst, Register src); 2217 void mov32(Register dst, AddressLiteral src); 2218 2219 // to avoid hiding movb 2220 void movbyte(ArrayAddress dst, int src); 2221 2222 // Can push value or effective address 2223 void pushptr(AddressLiteral src); 2224 2225 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); } 2226 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); } 2227 2228 void pushoop(jobject obj); 2229 2230 // sign extend as need a l to ptr sized element 2231 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); } 2232 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); } 2233 2234 // IndexOf strings. 2235 void string_indexof(Register str1, Register str2, 2236 Register cnt1, Register cnt2, Register result, 2237 XMMRegister vec, Register tmp); 2238 2239 // Compare strings. 2240 void string_compare(Register str1, Register str2, 2241 Register cnt1, Register cnt2, Register result, 2242 XMMRegister vec1, XMMRegister vec2); 2243 2244 // Compare char[] arrays. 2245 void char_arrays_equals(bool is_array_equ, Register ary1, Register ary2, 2246 Register limit, Register result, Register chr, 2247 XMMRegister vec1, XMMRegister vec2); 2248 2249 // Fill primitive arrays 2250 void generate_fill(BasicType t, bool aligned, 2251 Register to, Register value, Register count, 2252 Register rtmp, XMMRegister xtmp); 2253 2254#undef VIRTUAL 2255 2256}; 2257 2258/** 2259 * class SkipIfEqual: 2260 * 2261 * Instantiating this class will result in assembly code being output that will 2262 * jump around any code emitted between the creation of the instance and it's 2263 * automatic destruction at the end of a scope block, depending on the value of 2264 * the flag passed to the constructor, which will be checked at run-time. 2265 */ 2266class SkipIfEqual { 2267 private: 2268 MacroAssembler* _masm; 2269 Label _label; 2270 2271 public: 2272 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value); 2273 ~SkipIfEqual(); 2274}; 2275 2276#ifdef ASSERT 2277inline bool AbstractAssembler::pd_check_instruction_mark() { return true; } 2278#endif 2279 2280#endif // CPU_X86_VM_ASSEMBLER_X86_HPP 2281