1 /*
2 * Copyright (c) 1997, 2011, 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
28 class BiasedLockingCounters;
29
30 // Contains all the definitions needed for x86 assembly code generation.
31
32 // Calling convention
33 class 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
59 REGISTER_DECLARATION(Register, c_rarg0, rcx);
60 REGISTER_DECLARATION(Register, c_rarg1, rdx);
61 REGISTER_DECLARATION(Register, c_rarg2, r8);
62 REGISTER_DECLARATION(Register, c_rarg3, r9);
63
64 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0);
65 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1);
66 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2);
67 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3);
68
69 #else
70
71 REGISTER_DECLARATION(Register, c_rarg0, rdi);
72 REGISTER_DECLARATION(Register, c_rarg1, rsi);
73 REGISTER_DECLARATION(Register, c_rarg2, rdx);
74 REGISTER_DECLARATION(Register, c_rarg3, rcx);
75 REGISTER_DECLARATION(Register, c_rarg4, r8);
76 REGISTER_DECLARATION(Register, c_rarg5, r9);
77
78 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0);
79 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1);
80 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2);
81 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3);
82 REGISTER_DECLARATION(XMMRegister, c_farg4, xmm4);
83 REGISTER_DECLARATION(XMMRegister, c_farg5, xmm5);
84 REGISTER_DECLARATION(XMMRegister, c_farg6, xmm6);
85 REGISTER_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
105 REGISTER_DECLARATION(Register, j_rarg0, c_rarg1);
106 REGISTER_DECLARATION(Register, j_rarg1, c_rarg2);
107 REGISTER_DECLARATION(Register, j_rarg2, c_rarg3);
108 // Windows runs out of register args here
109 #ifdef _WIN64
110 REGISTER_DECLARATION(Register, j_rarg3, rdi);
111 REGISTER_DECLARATION(Register, j_rarg4, rsi);
112 #else
113 REGISTER_DECLARATION(Register, j_rarg3, c_rarg4);
114 REGISTER_DECLARATION(Register, j_rarg4, c_rarg5);
115 #endif /* _WIN64 */
116 REGISTER_DECLARATION(Register, j_rarg5, c_rarg0);
117
118 REGISTER_DECLARATION(XMMRegister, j_farg0, xmm0);
119 REGISTER_DECLARATION(XMMRegister, j_farg1, xmm1);
120 REGISTER_DECLARATION(XMMRegister, j_farg2, xmm2);
121 REGISTER_DECLARATION(XMMRegister, j_farg3, xmm3);
122 REGISTER_DECLARATION(XMMRegister, j_farg4, xmm4);
123 REGISTER_DECLARATION(XMMRegister, j_farg5, xmm5);
124 REGISTER_DECLARATION(XMMRegister, j_farg6, xmm6);
125 REGISTER_DECLARATION(XMMRegister, j_farg7, xmm7);
126
127 REGISTER_DECLARATION(Register, rscratch1, r10); // volatile
128 REGISTER_DECLARATION(Register, rscratch2, r11); // volatile
129
130 REGISTER_DECLARATION(Register, r12_heapbase, r12); // callee-saved
131 REGISTER_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 #define rscratch2 noreg
139
140 #endif // _LP64
141
142 // JSR 292 fixed register usages:
143 REGISTER_DECLARATION(Register, rbp_mh_SP_save, rbp);
144
145 // Address is an abstraction used to represent a memory location
146 // using any of the amd64 addressing modes with one object.
147 //
148 // Note: A register location is represented via a Register, not
149 // via an address for efficiency & simplicity reasons.
150
151 class ArrayAddress;
152
153 class Address VALUE_OBJ_CLASS_SPEC {
154 public:
155 enum ScaleFactor {
156 no_scale = -1,
157 times_1 = 0,
158 times_2 = 1,
159 times_4 = 2,
160 times_8 = 3,
161 times_ptr = LP64_ONLY(times_8) NOT_LP64(times_4)
162 };
163 static ScaleFactor times(int size) {
164 assert(size >= 1 && size <= 8 && is_power_of_2(size), "bad scale size");
165 if (size == 8) return times_8;
166 if (size == 4) return times_4;
167 if (size == 2) return times_2;
168 return times_1;
169 }
170 static int scale_size(ScaleFactor scale) {
171 assert(scale != no_scale, "");
172 assert(((1 << (int)times_1) == 1 &&
173 (1 << (int)times_2) == 2 &&
174 (1 << (int)times_4) == 4 &&
175 (1 << (int)times_8) == 8), "");
176 return (1 << (int)scale);
177 }
178
179 private:
180 Register _base;
181 Register _index;
182 ScaleFactor _scale;
183 int _disp;
184 RelocationHolder _rspec;
185
186 // Easily misused constructors make them private
187 // %%% can we make these go away?
188 NOT_LP64(Address(address loc, RelocationHolder spec);)
189 Address(int disp, address loc, relocInfo::relocType rtype);
190 Address(int disp, address loc, RelocationHolder spec);
191
192 public:
193
194 int disp() { return _disp; }
195 // creation
196 Address()
197 : _base(noreg),
198 _index(noreg),
199 _scale(no_scale),
200 _disp(0) {
201 }
202
203 // No default displacement otherwise Register can be implicitly
204 // converted to 0(Register) which is quite a different animal.
205
206 Address(Register base, int disp)
207 : _base(base),
208 _index(noreg),
209 _scale(no_scale),
210 _disp(disp) {
211 }
212
213 Address(Register base, Register index, ScaleFactor scale, int disp = 0)
214 : _base (base),
215 _index(index),
216 _scale(scale),
217 _disp (disp) {
218 assert(!index->is_valid() == (scale == Address::no_scale),
219 "inconsistent address");
220 }
221
222 Address(Register base, RegisterOrConstant index, ScaleFactor scale = times_1, int disp = 0)
223 : _base (base),
224 _index(index.register_or_noreg()),
225 _scale(scale),
226 _disp (disp + (index.constant_or_zero() * scale_size(scale))) {
227 if (!index.is_register()) scale = Address::no_scale;
228 assert(!_index->is_valid() == (scale == Address::no_scale),
229 "inconsistent address");
230 }
231
232 Address plus_disp(int disp) const {
233 Address a = (*this);
234 a._disp += disp;
235 return a;
236 }
237
238 // The following two overloads are used in connection with the
239 // ByteSize type (see sizes.hpp). They simplify the use of
240 // ByteSize'd arguments in assembly code. Note that their equivalent
241 // for the optimized build are the member functions with int disp
242 // argument since ByteSize is mapped to an int type in that case.
243 //
244 // Note: DO NOT introduce similar overloaded functions for WordSize
245 // arguments as in the optimized mode, both ByteSize and WordSize
246 // are mapped to the same type and thus the compiler cannot make a
247 // distinction anymore (=> compiler errors).
248
249 #ifdef ASSERT
250 Address(Register base, ByteSize disp)
251 : _base(base),
252 _index(noreg),
253 _scale(no_scale),
254 _disp(in_bytes(disp)) {
255 }
256
257 Address(Register base, Register index, ScaleFactor scale, ByteSize disp)
258 : _base(base),
259 _index(index),
260 _scale(scale),
261 _disp(in_bytes(disp)) {
262 assert(!index->is_valid() == (scale == Address::no_scale),
263 "inconsistent address");
264 }
265
266 Address(Register base, RegisterOrConstant index, ScaleFactor scale, ByteSize disp)
267 : _base (base),
268 _index(index.register_or_noreg()),
269 _scale(scale),
270 _disp (in_bytes(disp) + (index.constant_or_zero() * scale_size(scale))) {
271 if (!index.is_register()) scale = Address::no_scale;
272 assert(!_index->is_valid() == (scale == Address::no_scale),
273 "inconsistent address");
274 }
275
276 #endif // ASSERT
277
278 // accessors
279 bool uses(Register reg) const { return _base == reg || _index == reg; }
280 Register base() const { return _base; }
281 Register index() const { return _index; }
282 ScaleFactor scale() const { return _scale; }
283 int disp() const { return _disp; }
284
285 // Convert the raw encoding form into the form expected by the constructor for
286 // Address. An index of 4 (rsp) corresponds to having no index, so convert
287 // that to noreg for the Address constructor.
288 static Address make_raw(int base, int index, int scale, int disp, bool disp_is_oop);
289
290 static Address make_array(ArrayAddress);
291
292 private:
293 bool base_needs_rex() const {
294 return _base != noreg && _base->encoding() >= 8;
295 }
296
297 bool index_needs_rex() const {
298 return _index != noreg &&_index->encoding() >= 8;
299 }
300
301 relocInfo::relocType reloc() const { return _rspec.type(); }
302
303 friend class Assembler;
304 friend class MacroAssembler;
305 friend class LIR_Assembler; // base/index/scale/disp
306 };
307
308 //
309 // AddressLiteral has been split out from Address because operands of this type
310 // need to be treated specially on 32bit vs. 64bit platforms. By splitting it out
311 // the few instructions that need to deal with address literals are unique and the
312 // MacroAssembler does not have to implement every instruction in the Assembler
313 // in order to search for address literals that may need special handling depending
314 // on the instruction and the platform. As small step on the way to merging i486/amd64
315 // directories.
316 //
317 class AddressLiteral VALUE_OBJ_CLASS_SPEC {
318 friend class ArrayAddress;
319 RelocationHolder _rspec;
320 // Typically we use AddressLiterals we want to use their rval
321 // However in some situations we want the lval (effect address) of the item.
322 // We provide a special factory for making those lvals.
323 bool _is_lval;
324
325 // If the target is far we'll need to load the ea of this to
326 // a register to reach it. Otherwise if near we can do rip
327 // relative addressing.
328
329 address _target;
330
331 protected:
332 // creation
333 AddressLiteral()
334 : _is_lval(false),
335 _target(NULL)
336 {}
337
338 public:
339
340
341 AddressLiteral(address target, relocInfo::relocType rtype);
342
343 AddressLiteral(address target, RelocationHolder const& rspec)
344 : _rspec(rspec),
345 _is_lval(false),
346 _target(target)
347 {}
348
349 AddressLiteral addr() {
350 AddressLiteral ret = *this;
351 ret._is_lval = true;
352 return ret;
353 }
354
355
356 private:
357
358 address target() { return _target; }
359 bool is_lval() { return _is_lval; }
360
361 relocInfo::relocType reloc() const { return _rspec.type(); }
362 const RelocationHolder& rspec() const { return _rspec; }
363
364 friend class Assembler;
365 friend class MacroAssembler;
366 friend class Address;
367 friend class LIR_Assembler;
368 };
369
370 // Convience classes
371 class RuntimeAddress: public AddressLiteral {
372
373 public:
374
375 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {}
376
377 };
378
379 class OopAddress: public AddressLiteral {
380
381 public:
382
383 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){}
384
385 };
386
387 class ExternalAddress: public AddressLiteral {
388
389 public:
390
391 ExternalAddress(address target) : AddressLiteral(target, relocInfo::external_word_type){}
392
393 };
394
395 class InternalAddress: public AddressLiteral {
396
397 public:
398
399 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {}
400
401 };
402
403 // x86 can do array addressing as a single operation since disp can be an absolute
404 // address amd64 can't. We create a class that expresses the concept but does extra
405 // magic on amd64 to get the final result
406
407 class ArrayAddress VALUE_OBJ_CLASS_SPEC {
408 private:
409
410 AddressLiteral _base;
411 Address _index;
412
413 public:
414
415 ArrayAddress() {};
416 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {};
417 AddressLiteral base() { return _base; }
418 Address index() { return _index; }
419
420 };
421
422 const int FPUStateSizeInWords = NOT_LP64(27) LP64_ONLY( 512 / wordSize);
423
424 // The Intel x86/Amd64 Assembler: Pure assembler doing NO optimizations on the instruction
425 // level (e.g. mov rax, 0 is not translated into xor rax, rax!); i.e., what you write
426 // is what you get. The Assembler is generating code into a CodeBuffer.
427
428 class Assembler : public AbstractAssembler {
429 friend class AbstractAssembler; // for the non-virtual hack
430 friend class LIR_Assembler; // as_Address()
431 friend class StubGenerator;
432
433 public:
434 enum Condition { // The x86 condition codes used for conditional jumps/moves.
435 zero = 0x4,
436 notZero = 0x5,
437 equal = 0x4,
438 notEqual = 0x5,
439 less = 0xc,
440 lessEqual = 0xe,
441 greater = 0xf,
442 greaterEqual = 0xd,
443 below = 0x2,
444 belowEqual = 0x6,
445 above = 0x7,
446 aboveEqual = 0x3,
447 overflow = 0x0,
448 noOverflow = 0x1,
449 carrySet = 0x2,
450 carryClear = 0x3,
451 negative = 0x8,
452 positive = 0x9,
453 parity = 0xa,
454 noParity = 0xb
455 };
456
457 enum Prefix {
458 // segment overrides
459 CS_segment = 0x2e,
460 SS_segment = 0x36,
461 DS_segment = 0x3e,
462 ES_segment = 0x26,
463 FS_segment = 0x64,
464 GS_segment = 0x65,
465
466 REX = 0x40,
467
468 REX_B = 0x41,
469 REX_X = 0x42,
470 REX_XB = 0x43,
471 REX_R = 0x44,
472 REX_RB = 0x45,
473 REX_RX = 0x46,
474 REX_RXB = 0x47,
475
476 REX_W = 0x48,
477
478 REX_WB = 0x49,
479 REX_WX = 0x4A,
480 REX_WXB = 0x4B,
481 REX_WR = 0x4C,
482 REX_WRB = 0x4D,
483 REX_WRX = 0x4E,
484 REX_WRXB = 0x4F
485 };
486
487 enum WhichOperand {
488 // input to locate_operand, and format code for relocations
489 imm_operand = 0, // embedded 32-bit|64-bit immediate operand
490 disp32_operand = 1, // embedded 32-bit displacement or address
491 call32_operand = 2, // embedded 32-bit self-relative displacement
492 #ifndef _LP64
493 _WhichOperand_limit = 3
494 #else
495 narrow_oop_operand = 3, // embedded 32-bit immediate narrow oop
496 _WhichOperand_limit = 4
497 #endif
498 };
499
500
501
502 // NOTE: The general philopsophy of the declarations here is that 64bit versions
503 // of instructions are freely declared without the need for wrapping them an ifdef.
504 // (Some dangerous instructions are ifdef's out of inappropriate jvm's.)
505 // In the .cpp file the implementations are wrapped so that they are dropped out
506 // of the resulting jvm. This is done mostly to keep the footprint of KERNEL
507 // to the size it was prior to merging up the 32bit and 64bit assemblers.
508 //
509 // This does mean you'll get a linker/runtime error if you use a 64bit only instruction
510 // in a 32bit vm. This is somewhat unfortunate but keeps the ifdef noise down.
511
512 private:
513
514
515 // 64bit prefixes
516 int prefix_and_encode(int reg_enc, bool byteinst = false);
517 int prefixq_and_encode(int reg_enc);
518
519 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false);
520 int prefixq_and_encode(int dst_enc, int src_enc);
521
522 void prefix(Register reg);
523 void prefix(Address adr);
524 void prefixq(Address adr);
525
526 void prefix(Address adr, Register reg, bool byteinst = false);
527 void prefixq(Address adr, Register reg);
528
529 void prefix(Address adr, XMMRegister reg);
530
531 void prefetch_prefix(Address src);
532
533 // Helper functions for groups of instructions
534 void emit_arith_b(int op1, int op2, Register dst, int imm8);
535
536 void emit_arith(int op1, int op2, Register dst, int32_t imm32);
537 // only 32bit??
538 void emit_arith(int op1, int op2, Register dst, jobject obj);
539 void emit_arith(int op1, int op2, Register dst, Register src);
540
541 void emit_operand(Register reg,
542 Register base, Register index, Address::ScaleFactor scale,
543 int disp,
544 RelocationHolder const& rspec,
545 int rip_relative_correction = 0);
546
547 void emit_operand(Register reg, Address adr, int rip_relative_correction = 0);
548
549 // operands that only take the original 32bit registers
550 void emit_operand32(Register reg, Address adr);
551
552 void emit_operand(XMMRegister reg,
553 Register base, Register index, Address::ScaleFactor scale,
554 int disp,
555 RelocationHolder const& rspec);
556
557 void emit_operand(XMMRegister reg, Address adr);
558
559 void emit_operand(MMXRegister reg, Address adr);
560
561 // workaround gcc (3.2.1-7) bug
562 void emit_operand(Address adr, MMXRegister reg);
563
564
565 // Immediate-to-memory forms
566 void emit_arith_operand(int op1, Register rm, Address adr, int32_t imm32);
567
568 void emit_farith(int b1, int b2, int i);
569
570
571 protected:
572 #ifdef ASSERT
573 void check_relocation(RelocationHolder const& rspec, int format);
574 #endif
575
576 inline void emit_long64(jlong x);
577
578 void emit_data(jint data, relocInfo::relocType rtype, int format);
579 void emit_data(jint data, RelocationHolder const& rspec, int format);
580 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0);
581 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0);
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 &&
677 x < (CONST64(1) << (nbits-1)); }
678 static bool is_simm32(int64_t x) { return x == (int64_t)(int32_t)x; }
679 #else
680 static bool is_simm(int32_t x, int nbits) { return -(1 << (nbits-1)) <= x &&
681 x < (1 << (nbits-1)); }
682 static bool is_simm32(int32_t x) { return true; }
683 #endif // _LP64
684
685 static bool is_polling_page_far() NOT_LP64({ return false;});
686
687 // Generic instructions
688 // Does 32bit or 64bit as needed for the platform. In some sense these
689 // belong in macro assembler but there is no need for both varieties to exist
690
691 void lea(Register dst, Address src);
692
693 void mov(Register dst, Register src);
694
695 void pusha();
696 void popa();
697
698 void pushf();
699 void popf();
700
701 void push(int32_t imm32);
702
703 void push(Register src);
704
705 void pop(Register dst);
706
707 // These are dummies to prevent surprise implicit conversions to Register
708 void push(void* v);
709 void pop(void* v);
710
711 // These do register sized moves/scans
712 void rep_mov();
713 void rep_set();
714 void repne_scan();
715 #ifdef _LP64
716 void repne_scanl();
717 #endif
718
719 // Vanilla instructions in lexical order
720
721 void adcl(Address dst, int32_t imm32);
722 void adcl(Address dst, Register src);
723 void adcl(Register dst, int32_t imm32);
724 void adcl(Register dst, Address src);
725 void adcl(Register dst, Register src);
726
727 void adcq(Register dst, int32_t imm32);
728 void adcq(Register dst, Address src);
729 void adcq(Register dst, Register src);
730
731 void addl(Address dst, int32_t imm32);
732 void addl(Address dst, Register src);
733 void addl(Register dst, int32_t imm32);
734 void addl(Register dst, Address src);
735 void addl(Register dst, Register src);
736
737 void addq(Address dst, int32_t imm32);
738 void addq(Address dst, Register src);
739 void addq(Register dst, int32_t imm32);
740 void addq(Register dst, Address src);
741 void addq(Register dst, Register src);
742
743 void addr_nop_4();
744 void addr_nop_5();
745 void addr_nop_7();
746 void addr_nop_8();
747
748 // Add Scalar Double-Precision Floating-Point Values
749 void addsd(XMMRegister dst, Address src);
750 void addsd(XMMRegister dst, XMMRegister src);
751
752 // Add Scalar Single-Precision Floating-Point Values
753 void addss(XMMRegister dst, Address src);
754 void addss(XMMRegister dst, XMMRegister src);
755
756 void andl(Register dst, int32_t imm32);
757 void andl(Register dst, Address src);
758 void andl(Register dst, Register src);
759
760 void andq(Register dst, int32_t imm32);
761 void andq(Register dst, Address src);
762 void andq(Register dst, Register src);
763
764 // Bitwise Logical AND of Packed Double-Precision Floating-Point Values
765 void andpd(XMMRegister dst, Address src);
766 void andpd(XMMRegister dst, XMMRegister src);
767
768 void bsfl(Register dst, Register src);
769 void bsrl(Register dst, Register src);
770
771 #ifdef _LP64
772 void bsfq(Register dst, Register src);
773 void bsrq(Register dst, Register src);
774 #endif
775
776 void bswapl(Register reg);
777
778 void bswapq(Register reg);
779
780 void call(Label& L, relocInfo::relocType rtype);
781 void call(Register reg); // push pc; pc <- reg
782 void call(Address adr); // push pc; pc <- adr
783
784 void cdql();
785
786 void cdqq();
787
788 void cld() { emit_byte(0xfc); }
789
790 void clflush(Address adr);
791
792 void cmovl(Condition cc, Register dst, Register src);
793 void cmovl(Condition cc, Register dst, Address src);
794
795 void cmovq(Condition cc, Register dst, Register src);
796 void cmovq(Condition cc, Register dst, Address src);
797
798
799 void cmpb(Address dst, int imm8);
800
801 void cmpl(Address dst, int32_t imm32);
802
803 void cmpl(Register dst, int32_t imm32);
804 void cmpl(Register dst, Register src);
805 void cmpl(Register dst, Address src);
806
807 void cmpq(Address dst, int32_t imm32);
808 void cmpq(Address dst, Register src);
809
810 void cmpq(Register dst, int32_t imm32);
811 void cmpq(Register dst, Register src);
812 void cmpq(Register dst, Address src);
813
814 // these are dummies used to catch attempting to convert NULL to Register
815 void cmpl(Register dst, void* junk); // dummy
816 void cmpq(Register dst, void* junk); // dummy
817
818 void cmpw(Address dst, int imm16);
819
820 void cmpxchg8 (Address adr);
821
822 void cmpxchgl(Register reg, Address adr);
823
824 void cmpxchgq(Register reg, Address adr);
825
826 // Ordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
827 void comisd(XMMRegister dst, Address src);
828
829 // Ordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
830 void comiss(XMMRegister dst, Address src);
831
832 // Identify processor type and features
833 void cpuid() {
834 emit_byte(0x0F);
835 emit_byte(0xA2);
836 }
837
838 // Convert Scalar Double-Precision Floating-Point Value to Scalar Single-Precision Floating-Point Value
839 void cvtsd2ss(XMMRegister dst, XMMRegister src);
840
841 // Convert Doubleword Integer to Scalar Double-Precision Floating-Point Value
842 void cvtsi2sdl(XMMRegister dst, Register src);
843 void cvtsi2sdq(XMMRegister dst, Register src);
844
845 // Convert Doubleword Integer to Scalar Single-Precision Floating-Point Value
846 void cvtsi2ssl(XMMRegister dst, Register src);
847 void cvtsi2ssq(XMMRegister dst, Register src);
848
849 // Convert Packed Signed Doubleword Integers to Packed Double-Precision Floating-Point Value
850 void cvtdq2pd(XMMRegister dst, XMMRegister src);
851
852 // Convert Packed Signed Doubleword Integers to Packed Single-Precision Floating-Point Value
853 void cvtdq2ps(XMMRegister dst, XMMRegister src);
854
855 // Convert Scalar Single-Precision Floating-Point Value to Scalar Double-Precision Floating-Point Value
856 void cvtss2sd(XMMRegister dst, XMMRegister src);
857
858 // Convert with Truncation Scalar Double-Precision Floating-Point Value to Doubleword Integer
859 void cvttsd2sil(Register dst, Address src);
860 void cvttsd2sil(Register dst, XMMRegister src);
861 void cvttsd2siq(Register dst, XMMRegister src);
862
863 // Convert with Truncation Scalar Single-Precision Floating-Point Value to Doubleword Integer
864 void cvttss2sil(Register dst, XMMRegister src);
865 void cvttss2siq(Register dst, XMMRegister src);
866
867 // Divide Scalar Double-Precision Floating-Point Values
868 void divsd(XMMRegister dst, Address src);
869 void divsd(XMMRegister dst, XMMRegister src);
870
871 // Divide Scalar Single-Precision Floating-Point Values
872 void divss(XMMRegister dst, Address src);
873 void divss(XMMRegister dst, XMMRegister src);
874
875 void emms();
876
877 void fabs();
878
879 void fadd(int i);
880
881 void fadd_d(Address src);
882 void fadd_s(Address src);
883
884 // "Alternate" versions of x87 instructions place result down in FPU
885 // stack instead of on TOS
886
887 void fadda(int i); // "alternate" fadd
888 void faddp(int i = 1);
889
890 void fchs();
891
892 void fcom(int i);
893
894 void fcomp(int i = 1);
895 void fcomp_d(Address src);
896 void fcomp_s(Address src);
897
898 void fcompp();
899
900 void fcos();
901
902 void fdecstp();
903
904 void fdiv(int i);
905 void fdiv_d(Address src);
906 void fdivr_s(Address src);
907 void fdiva(int i); // "alternate" fdiv
908 void fdivp(int i = 1);
909
910 void fdivr(int i);
911 void fdivr_d(Address src);
912 void fdiv_s(Address src);
913
914 void fdivra(int i); // "alternate" reversed fdiv
915
916 void fdivrp(int i = 1);
917
918 void ffree(int i = 0);
919
920 void fild_d(Address adr);
921 void fild_s(Address adr);
922
923 void fincstp();
924
925 void finit();
926
927 void fist_s (Address adr);
928 void fistp_d(Address adr);
929 void fistp_s(Address adr);
930
931 void fld1();
932
933 void fld_d(Address adr);
934 void fld_s(Address adr);
935 void fld_s(int index);
936 void fld_x(Address adr); // extended-precision (80-bit) format
937
938 void fldcw(Address src);
939
940 void fldenv(Address src);
941
942 void fldlg2();
943
944 void fldln2();
945
946 void fldz();
947
948 void flog();
949 void flog10();
950
951 void fmul(int i);
952
953 void fmul_d(Address src);
954 void fmul_s(Address src);
955
956 void fmula(int i); // "alternate" fmul
957
958 void fmulp(int i = 1);
959
960 void fnsave(Address dst);
961
962 void fnstcw(Address src);
963
964 void fnstsw_ax();
965
966 void fprem();
967 void fprem1();
968
969 void frstor(Address src);
970
971 void fsin();
972
973 void fsqrt();
974
975 void fst_d(Address adr);
976 void fst_s(Address adr);
977
978 void fstp_d(Address adr);
979 void fstp_d(int index);
980 void fstp_s(Address adr);
981 void fstp_x(Address adr); // extended-precision (80-bit) format
982
983 void fsub(int i);
984 void fsub_d(Address src);
985 void fsub_s(Address src);
986
987 void fsuba(int i); // "alternate" fsub
988
989 void fsubp(int i = 1);
990
991 void fsubr(int i);
992 void fsubr_d(Address src);
993 void fsubr_s(Address src);
994
995 void fsubra(int i); // "alternate" reversed fsub
996
997 void fsubrp(int i = 1);
998
999 void ftan();
1000
1001 void ftst();
1002
1003 void fucomi(int i = 1);
1004 void fucomip(int i = 1);
1005
1006 void fwait();
1007
1008 void fxch(int i = 1);
1009
1010 void fxrstor(Address src);
1011
1012 void fxsave(Address dst);
1013
1014 void fyl2x();
1015
1016 void hlt();
1017
1018 void idivl(Register src);
1019 void divl(Register src); // Unsigned division
1020
1021 void idivq(Register src);
1022
1023 void imull(Register dst, Register src);
1024 void imull(Register dst, Register src, int value);
1025
1026 void imulq(Register dst, Register src);
1027 void imulq(Register dst, Register src, int value);
1028
1029
1030 // jcc is the generic conditional branch generator to run-
1031 // time routines, jcc is used for branches to labels. jcc
1032 // takes a branch opcode (cc) and a label (L) and generates
1033 // either a backward branch or a forward branch and links it
1034 // to the label fixup chain. Usage:
1035 //
1036 // Label L; // unbound label
1037 // jcc(cc, L); // forward branch to unbound label
1038 // bind(L); // bind label to the current pc
1039 // jcc(cc, L); // backward branch to bound label
1040 // bind(L); // illegal: a label may be bound only once
1041 //
1042 // Note: The same Label can be used for forward and backward branches
1043 // but it may be bound only once.
1044
1045 void jcc(Condition cc, Label& L,
1046 relocInfo::relocType rtype = relocInfo::none);
1047
1048 // Conditional jump to a 8-bit offset to L.
1049 // WARNING: be very careful using this for forward jumps. If the label is
1050 // not bound within an 8-bit offset of this instruction, a run-time error
1051 // will occur.
1052 void jccb(Condition cc, Label& L);
1053
1054 void jmp(Address entry); // pc <- entry
1055
1056 // Label operations & relative jumps (PPUM Appendix D)
1057 void jmp(Label& L, relocInfo::relocType rtype = relocInfo::none); // unconditional jump to L
1058
1059 void jmp(Register entry); // pc <- entry
1060
1061 // Unconditional 8-bit offset jump to L.
1062 // WARNING: be very careful using this for forward jumps. If the label is
1063 // not bound within an 8-bit offset of this instruction, a run-time error
1064 // will occur.
1065 void jmpb(Label& L);
1066
1067 void ldmxcsr( Address src );
1068
1069 void leal(Register dst, Address src);
1070
1071 void leaq(Register dst, Address src);
1072
1073 void lfence() {
1074 emit_byte(0x0F);
1075 emit_byte(0xAE);
1076 emit_byte(0xE8);
1077 }
1078
1079 void lock();
1080
1081 void lzcntl(Register dst, Register src);
1082
1083 #ifdef _LP64
1084 void lzcntq(Register dst, Register src);
1085 #endif
1086
1087 enum Membar_mask_bits {
1088 StoreStore = 1 << 3,
1089 LoadStore = 1 << 2,
1090 StoreLoad = 1 << 1,
1091 LoadLoad = 1 << 0
1092 };
1093
1094 // Serializes memory and blows flags
1095 void membar(Membar_mask_bits order_constraint) {
1096 if (os::is_MP()) {
1097 // We only have to handle StoreLoad
1098 if (order_constraint & StoreLoad) {
1099 // All usable chips support "locked" instructions which suffice
1100 // as barriers, and are much faster than the alternative of
1101 // using cpuid instruction. We use here a locked add [esp],0.
1102 // This is conveniently otherwise a no-op except for blowing
1103 // flags.
1104 // Any change to this code may need to revisit other places in
1105 // the code where this idiom is used, in particular the
1106 // orderAccess code.
1107 lock();
1108 addl(Address(rsp, 0), 0);// Assert the lock# signal here
1109 }
1110 }
1111 }
1112
1113 void mfence();
1114
1115 // Moves
1116
1117 void mov64(Register dst, int64_t imm64);
1118
1119 void movb(Address dst, Register src);
1120 void movb(Address dst, int imm8);
1121 void movb(Register dst, Address src);
1122
1123 void movdl(XMMRegister dst, Register src);
1124 void movdl(Register dst, XMMRegister src);
1125 void movdl(XMMRegister dst, Address src);
1126
1127 // Move Double Quadword
1128 void movdq(XMMRegister dst, Register src);
1129 void movdq(Register dst, XMMRegister src);
1130
1131 // Move Aligned Double Quadword
1132 void movdqa(Address dst, XMMRegister src);
1133 void movdqa(XMMRegister dst, Address src);
1134 void movdqa(XMMRegister dst, XMMRegister src);
1135
1136 // Move Unaligned Double Quadword
1137 void movdqu(Address dst, XMMRegister src);
1138 void movdqu(XMMRegister dst, Address src);
1139 void movdqu(XMMRegister dst, XMMRegister src);
1140
1141 void movl(Register dst, int32_t imm32);
1142 void movl(Address dst, int32_t imm32);
1143 void movl(Register dst, Register src);
1144 void movl(Register dst, Address src);
1145 void movl(Address dst, Register src);
1146
1147 // These dummies prevent using movl from converting a zero (like NULL) into Register
1148 // by giving the compiler two choices it can't resolve
1149
1150 void movl(Address dst, void* junk);
1151 void movl(Register dst, void* junk);
1152
1153 #ifdef _LP64
1154 void movq(Register dst, Register src);
1155 void movq(Register dst, Address src);
1156 void movq(Address dst, Register src);
1157 #endif
1158
1159 void movq(Address dst, MMXRegister src );
1160 void movq(MMXRegister dst, Address src );
1161
1162 #ifdef _LP64
1163 // These dummies prevent using movq from converting a zero (like NULL) into Register
1164 // by giving the compiler two choices it can't resolve
1165
1166 void movq(Address dst, void* dummy);
1167 void movq(Register dst, void* dummy);
1168 #endif
1169
1170 // Move Quadword
1171 void movq(Address dst, XMMRegister src);
1172 void movq(XMMRegister dst, Address src);
1173
1174 void movsbl(Register dst, Address src);
1175 void movsbl(Register dst, Register src);
1176
1177 #ifdef _LP64
1178 void movsbq(Register dst, Address src);
1179 void movsbq(Register dst, Register src);
1180
1181 // Move signed 32bit immediate to 64bit extending sign
1182 void movslq(Address dst, int32_t imm64);
1183 void movslq(Register dst, int32_t imm64);
1184
1185 void movslq(Register dst, Address src);
1186 void movslq(Register dst, Register src);
1187 void movslq(Register dst, void* src); // Dummy declaration to cause NULL to be ambiguous
1188 #endif
1189
1190 void movswl(Register dst, Address src);
1191 void movswl(Register dst, Register src);
1192
1193 #ifdef _LP64
1194 void movswq(Register dst, Address src);
1195 void movswq(Register dst, Register src);
1196 #endif
1197
1198 void movw(Address dst, int imm16);
1199 void movw(Register dst, Address src);
1200 void movw(Address dst, Register src);
1201
1202 void movzbl(Register dst, Address src);
1203 void movzbl(Register dst, Register src);
1204
1205 #ifdef _LP64
1206 void movzbq(Register dst, Address src);
1207 void movzbq(Register dst, Register src);
1208 #endif
1209
1210 void movzwl(Register dst, Address src);
1211 void movzwl(Register dst, Register src);
1212
1213 #ifdef _LP64
1214 void movzwq(Register dst, Address src);
1215 void movzwq(Register dst, Register src);
1216 #endif
1217
1218 void mull(Address src);
1219 void mull(Register src);
1220
1221 // Multiply Scalar Double-Precision Floating-Point Values
1222 void mulsd(XMMRegister dst, Address src);
1223 void mulsd(XMMRegister dst, XMMRegister src);
1224
1225 // Multiply Scalar Single-Precision Floating-Point Values
1226 void mulss(XMMRegister dst, Address src);
1227 void mulss(XMMRegister dst, XMMRegister src);
1228
1229 void negl(Register dst);
1230
1231 #ifdef _LP64
1232 void negq(Register dst);
1233 #endif
1234
1235 void nop(int i = 1);
1236
1237 void notl(Register dst);
1238
1239 #ifdef _LP64
1240 void notq(Register dst);
1241 #endif
1242
1243 void orl(Address dst, int32_t imm32);
1244 void orl(Register dst, int32_t imm32);
1245 void orl(Register dst, Address src);
1246 void orl(Register dst, Register src);
1247
1248 void orq(Address dst, int32_t imm32);
1249 void orq(Register dst, int32_t imm32);
1250 void orq(Register dst, Address src);
1251 void orq(Register dst, Register src);
1252
1253 // SSE4.2 string instructions
1254 void pcmpestri(XMMRegister xmm1, XMMRegister xmm2, int imm8);
1255 void pcmpestri(XMMRegister xmm1, Address src, int imm8);
1256
1257 #ifndef _LP64 // no 32bit push/pop on amd64
1258 void popl(Address dst);
1259 #endif
1260
1261 #ifdef _LP64
1262 void popq(Address dst);
1263 #endif
1264
1265 void popcntl(Register dst, Address src);
1266 void popcntl(Register dst, Register src);
1267
1268 #ifdef _LP64
1269 void popcntq(Register dst, Address src);
1270 void popcntq(Register dst, Register src);
1271 #endif
1272
1273 // Prefetches (SSE, SSE2, 3DNOW only)
1274
1275 void prefetchnta(Address src);
1276 void prefetchr(Address src);
1277 void prefetcht0(Address src);
1278 void prefetcht1(Address src);
1279 void prefetcht2(Address src);
1280 void prefetchw(Address src);
1281
1282 // POR - Bitwise logical OR
1283 void por(XMMRegister dst, XMMRegister src);
1284
1285 // Shuffle Packed Doublewords
1286 void pshufd(XMMRegister dst, XMMRegister src, int mode);
1287 void pshufd(XMMRegister dst, Address src, int mode);
1288
1289 // Shuffle Packed Low Words
1290 void pshuflw(XMMRegister dst, XMMRegister src, int mode);
1291 void pshuflw(XMMRegister dst, Address src, int mode);
1292
1293 // Shift Right by bits Logical Quadword Immediate
1294 void psrlq(XMMRegister dst, int shift);
1295
1296 // Shift Right by bytes Logical DoubleQuadword Immediate
1297 void psrldq(XMMRegister dst, int shift);
1298
1299 // Logical Compare Double Quadword
1300 void ptest(XMMRegister dst, XMMRegister src);
1301 void ptest(XMMRegister dst, Address src);
1302
1303 // Interleave Low Bytes
1304 void punpcklbw(XMMRegister dst, XMMRegister src);
1305
1306 #ifndef _LP64 // no 32bit push/pop on amd64
1307 void pushl(Address src);
1308 #endif
1309
1310 void pushq(Address src);
1311
1312 // Xor Packed Byte Integer Values
1313 void pxor(XMMRegister dst, Address src);
1314 void pxor(XMMRegister dst, XMMRegister src);
1315
1316 void rcll(Register dst, int imm8);
1317
1318 void rclq(Register dst, int imm8);
1319
1320 void ret(int imm16);
1321
1322 void sahf();
1323
1324 void sarl(Register dst, int imm8);
1325 void sarl(Register dst);
1326
1327 void sarq(Register dst, int imm8);
1328 void sarq(Register dst);
1329
1330 void sbbl(Address dst, int32_t imm32);
1331 void sbbl(Register dst, int32_t imm32);
1332 void sbbl(Register dst, Address src);
1333 void sbbl(Register dst, Register src);
1334
1335 void sbbq(Address dst, int32_t imm32);
1336 void sbbq(Register dst, int32_t imm32);
1337 void sbbq(Register dst, Address src);
1338 void sbbq(Register dst, Register src);
1339
1340 void setb(Condition cc, Register dst);
1341
1342 void shldl(Register dst, Register src);
1343
1344 void shll(Register dst, int imm8);
1345 void shll(Register dst);
1346
1347 void shlq(Register dst, int imm8);
1348 void shlq(Register dst);
1349
1350 void shrdl(Register dst, Register src);
1351
1352 void shrl(Register dst, int imm8);
1353 void shrl(Register dst);
1354
1355 void shrq(Register dst, int imm8);
1356 void shrq(Register dst);
1357
1358 void smovl(); // QQQ generic?
1359
1360 // Compute Square Root of Scalar Double-Precision Floating-Point Value
1361 void sqrtsd(XMMRegister dst, Address src);
1362 void sqrtsd(XMMRegister dst, XMMRegister src);
1363
1364 // Compute Square Root of Scalar Single-Precision Floating-Point Value
1365 void sqrtss(XMMRegister dst, Address src);
1366 void sqrtss(XMMRegister dst, XMMRegister src);
1367
1368 void std() { emit_byte(0xfd); }
1369
1370 void stmxcsr( Address dst );
1371
1372 void subl(Address dst, int32_t imm32);
1373 void subl(Address dst, Register src);
1374 void subl(Register dst, int32_t imm32);
1375 void subl(Register dst, Address src);
1376 void subl(Register dst, Register src);
1377
1378 void subq(Address dst, int32_t imm32);
1379 void subq(Address dst, Register src);
1380 void subq(Register dst, int32_t imm32);
1381 void subq(Register dst, Address src);
1382 void subq(Register dst, Register src);
1383
1384
1385 // Subtract Scalar Double-Precision Floating-Point Values
1386 void subsd(XMMRegister dst, Address src);
1387 void subsd(XMMRegister dst, XMMRegister src);
1388
1389 // Subtract Scalar Single-Precision Floating-Point Values
1390 void subss(XMMRegister dst, Address src);
1391 void subss(XMMRegister dst, XMMRegister src);
1392
1393 void testb(Register dst, int imm8);
1394
1395 void testl(Register dst, int32_t imm32);
1396 void testl(Register dst, Register src);
1397 void testl(Register dst, Address src);
1398
1399 void testq(Register dst, int32_t imm32);
1400 void testq(Register dst, Register src);
1401
1402
1403 // Unordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
1404 void ucomisd(XMMRegister dst, Address src);
1405 void ucomisd(XMMRegister dst, XMMRegister src);
1406
1407 // Unordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
1408 void ucomiss(XMMRegister dst, Address src);
1409 void ucomiss(XMMRegister dst, XMMRegister src);
1410
1411 void xaddl(Address dst, Register src);
1412
1413 void xaddq(Address dst, Register src);
1414
1415 void xchgl(Register reg, Address adr);
1416 void xchgl(Register dst, Register src);
1417
1418 void xchgq(Register reg, Address adr);
1419 void xchgq(Register dst, Register src);
1420
1421 void xorl(Register dst, int32_t imm32);
1422 void xorl(Register dst, Address src);
1423 void xorl(Register dst, Register src);
1424
1425 void xorq(Register dst, Address src);
1426 void xorq(Register dst, Register src);
1427
1428 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
1429 void xorpd(XMMRegister dst, Address src);
1430 void xorpd(XMMRegister dst, XMMRegister src);
1431
1432 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
1433 void xorps(XMMRegister dst, Address src);
1434 void xorps(XMMRegister dst, XMMRegister src);
1435
1436 void set_byte_if_not_zero(Register dst); // sets reg to 1 if not zero, otherwise 0
1437 };
1438
1439
1440 // MacroAssembler extends Assembler by frequently used macros.
1441 //
1442 // Instructions for which a 'better' code sequence exists depending
1443 // on arguments should also go in here.
1444
1445 class MacroAssembler: public Assembler {
1446 friend class LIR_Assembler;
1447 friend class Runtime1; // as_Address()
1448 protected:
1449
1450 Address as_Address(AddressLiteral adr);
1451 Address as_Address(ArrayAddress adr);
1452
1453 // Support for VM calls
1454 //
1455 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
1456 // may customize this version by overriding it for its purposes (e.g., to save/restore
1457 // additional registers when doing a VM call).
1458 #ifdef CC_INTERP
1459 // c++ interpreter never wants to use interp_masm version of call_VM
1460 #define VIRTUAL
1461 #else
1462 #define VIRTUAL virtual
1463 #endif
1464
1465 VIRTUAL void call_VM_leaf_base(
1466 address entry_point, // the entry point
1467 int number_of_arguments // the number of arguments to pop after the call
1468 );
1469
1470 // This is the base routine called by the different versions of call_VM. The interpreter
1471 // may customize this version by overriding it for its purposes (e.g., to save/restore
1472 // additional registers when doing a VM call).
1473 //
1474 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base
1475 // returns the register which contains the thread upon return. If a thread register has been
1476 // specified, the return value will correspond to that register. If no last_java_sp is specified
1477 // (noreg) than rsp will be used instead.
1478 VIRTUAL void call_VM_base( // returns the register containing the thread upon return
1479 Register oop_result, // where an oop-result ends up if any; use noreg otherwise
1480 Register java_thread, // the thread if computed before ; use noreg otherwise
1481 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise
1482 address entry_point, // the entry point
1483 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call
1484 bool check_exceptions // whether to check for pending exceptions after return
1485 );
1486
1487 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
1488 // The implementation is only non-empty for the InterpreterMacroAssembler,
1489 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
1490 virtual void check_and_handle_popframe(Register java_thread);
1491 virtual void check_and_handle_earlyret(Register java_thread);
1492
1493 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
1494
1495 // helpers for FPU flag access
1496 // tmp is a temporary register, if none is available use noreg
1497 void save_rax (Register tmp);
1498 void restore_rax(Register tmp);
1499
1500 public:
1501 MacroAssembler(CodeBuffer* code) : Assembler(code) {}
1502
1503 // Support for NULL-checks
1504 //
1505 // Generates code that causes a NULL OS exception if the content of reg is NULL.
1506 // If the accessed location is M[reg + offset] and the offset is known, provide the
1507 // offset. No explicit code generation is needed if the offset is within a certain
1508 // range (0 <= offset <= page_size).
1509
1510 void null_check(Register reg, int offset = -1);
1511 static bool needs_explicit_null_check(intptr_t offset);
1512
1513 // Required platform-specific helpers for Label::patch_instructions.
1514 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
1515 void pd_patch_instruction(address branch, address target);
1516 #ifndef PRODUCT
1517 static void pd_print_patched_instruction(address branch);
1518 #endif
1519
1520 // The following 4 methods return the offset of the appropriate move instruction
1521
1522 // Support for fast byte/short loading with zero extension (depending on particular CPU)
1523 int load_unsigned_byte(Register dst, Address src);
1524 int load_unsigned_short(Register dst, Address src);
1525
1526 // Support for fast byte/short loading with sign extension (depending on particular CPU)
1527 int load_signed_byte(Register dst, Address src);
1528 int load_signed_short(Register dst, Address src);
1529
1530 // Support for sign-extension (hi:lo = extend_sign(lo))
1531 void extend_sign(Register hi, Register lo);
1532
1533 // Load and store values by size and signed-ness
1534 void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg);
1535 void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg);
1536
1537 // Support for inc/dec with optimal instruction selection depending on value
1538
1539 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
1540 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
1541
1542 void decrementl(Address dst, int value = 1);
1543 void decrementl(Register reg, int value = 1);
1544
1545 void decrementq(Register reg, int value = 1);
1546 void decrementq(Address dst, int value = 1);
1547
1548 void incrementl(Address dst, int value = 1);
1549 void incrementl(Register reg, int value = 1);
1550
1551 void incrementq(Register reg, int value = 1);
1552 void incrementq(Address dst, int value = 1);
1553
1554
1555 // Support optimal SSE move instructions.
1556 void movflt(XMMRegister dst, XMMRegister src) {
1557 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; }
1558 else { movss (dst, src); return; }
1559 }
1560 void movflt(XMMRegister dst, Address src) { movss(dst, src); }
1561 void movflt(XMMRegister dst, AddressLiteral src);
1562 void movflt(Address dst, XMMRegister src) { movss(dst, src); }
1563
1564 void movdbl(XMMRegister dst, XMMRegister src) {
1565 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; }
1566 else { movsd (dst, src); return; }
1567 }
1568
1569 void movdbl(XMMRegister dst, AddressLiteral src);
1570
1571 void movdbl(XMMRegister dst, Address src) {
1572 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; }
1573 else { movlpd(dst, src); return; }
1574 }
1575 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); }
1576
1577 void incrementl(AddressLiteral dst);
1578 void incrementl(ArrayAddress dst);
1579
1580 // Alignment
1581 void align(int modulus);
1582
1583 // Misc
1584 void fat_nop(); // 5 byte nop
1585
1586 // Stack frame creation/removal
1587 void enter();
1588 void leave();
1589
1590 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
1591 // The pointer will be loaded into the thread register.
1592 void get_thread(Register thread);
1593
1594
1595 // Support for VM calls
1596 //
1597 // It is imperative that all calls into the VM are handled via the call_VM macros.
1598 // They make sure that the stack linkage is setup correctly. call_VM's correspond
1599 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
1600
1601
1602 void call_VM(Register oop_result,
1603 address entry_point,
1604 bool check_exceptions = true);
1605 void call_VM(Register oop_result,
1606 address entry_point,
1607 Register arg_1,
1608 bool check_exceptions = true);
1609 void call_VM(Register oop_result,
1610 address entry_point,
1611 Register arg_1, Register arg_2,
1612 bool check_exceptions = true);
1613 void call_VM(Register oop_result,
1614 address entry_point,
1615 Register arg_1, Register arg_2, Register arg_3,
1616 bool check_exceptions = true);
1617
1618 // Overloadings with last_Java_sp
1619 void call_VM(Register oop_result,
1620 Register last_java_sp,
1621 address entry_point,
1622 int number_of_arguments = 0,
1623 bool check_exceptions = true);
1624 void call_VM(Register oop_result,
1625 Register last_java_sp,
1626 address entry_point,
1627 Register arg_1, bool
1628 check_exceptions = true);
1629 void call_VM(Register oop_result,
1630 Register last_java_sp,
1631 address entry_point,
1632 Register arg_1, Register arg_2,
1633 bool check_exceptions = true);
1634 void call_VM(Register oop_result,
1635 Register last_java_sp,
1636 address entry_point,
1637 Register arg_1, Register arg_2, Register arg_3,
1638 bool check_exceptions = true);
1639
1640 void call_VM_leaf(address entry_point,
1641 int number_of_arguments = 0);
1642 void call_VM_leaf(address entry_point,
1643 Register arg_1);
1644 void call_VM_leaf(address entry_point,
1645 Register arg_1, Register arg_2);
1646 void call_VM_leaf(address entry_point,
1647 Register arg_1, Register arg_2, Register arg_3);
1648
1649 // last Java Frame (fills frame anchor)
1650 void set_last_Java_frame(Register thread,
1651 Register last_java_sp,
1652 Register last_java_fp,
1653 address last_java_pc);
1654
1655 // thread in the default location (r15_thread on 64bit)
1656 void set_last_Java_frame(Register last_java_sp,
1657 Register last_java_fp,
1658 address last_java_pc);
1659
1660 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc);
1661
1662 // thread in the default location (r15_thread on 64bit)
1663 void reset_last_Java_frame(bool clear_fp, bool clear_pc);
1664
1665 // Stores
1666 void store_check(Register obj); // store check for obj - register is destroyed afterwards
1667 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed)
1668
1669 void g1_write_barrier_pre(Register obj,
1670 #ifndef _LP64
1671 Register thread,
1672 #endif
1673 Register tmp,
1674 Register tmp2,
1675 bool tosca_live);
1676 void g1_write_barrier_post(Register store_addr,
1677 Register new_val,
1678 #ifndef _LP64
1679 Register thread,
1680 #endif
1681 Register tmp,
1682 Register tmp2);
1683
1684
1685 // split store_check(Register obj) to enhance instruction interleaving
1686 void store_check_part_1(Register obj);
1687 void store_check_part_2(Register obj);
1688
1689 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
1690 void c2bool(Register x);
1691
1692 // C++ bool manipulation
1693
1694 void movbool(Register dst, Address src);
1695 void movbool(Address dst, bool boolconst);
1696 void movbool(Address dst, Register src);
1697 void testbool(Register dst);
1698
1699 // oop manipulations
1700 void load_klass(Register dst, Register src);
1701 void store_klass(Register dst, Register src);
1702
1703 void load_heap_oop(Register dst, Address src);
1704 void store_heap_oop(Address dst, Register src);
1705
1706 // Used for storing NULL. All other oop constants should be
1707 // stored using routines that take a jobject.
1708 void store_heap_oop_null(Address dst);
1709
1710 void load_prototype_header(Register dst, Register src);
1711
1712 #ifdef _LP64
1713 void store_klass_gap(Register dst, Register src);
1714
1715 // This dummy is to prevent a call to store_heap_oop from
1716 // converting a zero (like NULL) into a Register by giving
1717 // the compiler two choices it can't resolve
1718
1719 void store_heap_oop(Address dst, void* dummy);
1720
1721 void encode_heap_oop(Register r);
1722 void decode_heap_oop(Register r);
1723 void encode_heap_oop_not_null(Register r);
1724 void decode_heap_oop_not_null(Register r);
1725 void encode_heap_oop_not_null(Register dst, Register src);
1726 void decode_heap_oop_not_null(Register dst, Register src);
1727
1728 void set_narrow_oop(Register dst, jobject obj);
1729 void set_narrow_oop(Address dst, jobject obj);
1730 void cmp_narrow_oop(Register dst, jobject obj);
1731 void cmp_narrow_oop(Address dst, jobject obj);
1732
1733 // if heap base register is used - reinit it with the correct value
1734 void reinit_heapbase();
1735
1736 DEBUG_ONLY(void verify_heapbase(const char* msg);)
1737
1738 #endif // _LP64
1739
1740 // Int division/remainder for Java
1741 // (as idivl, but checks for special case as described in JVM spec.)
1742 // returns idivl instruction offset for implicit exception handling
1743 int corrected_idivl(Register reg);
1744
1745 // Long division/remainder for Java
1746 // (as idivq, but checks for special case as described in JVM spec.)
1747 // returns idivq instruction offset for implicit exception handling
1748 int corrected_idivq(Register reg);
1749
1750 void int3();
1751
1752 // Long operation macros for a 32bit cpu
1753 // Long negation for Java
1754 void lneg(Register hi, Register lo);
1755
1756 // Long multiplication for Java
1757 // (destroys contents of eax, ebx, ecx and edx)
1758 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y
1759
1760 // Long shifts for Java
1761 // (semantics as described in JVM spec.)
1762 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f)
1763 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f)
1764
1765 // Long compare for Java
1766 // (semantics as described in JVM spec.)
1767 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y)
1768
1769
1770 // misc
1771
1772 // Sign extension
1773 void sign_extend_short(Register reg);
1774 void sign_extend_byte(Register reg);
1775
1776 // Division by power of 2, rounding towards 0
1777 void division_with_shift(Register reg, int shift_value);
1778
1779 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows:
1780 //
1781 // CF (corresponds to C0) if x < y
1782 // PF (corresponds to C2) if unordered
1783 // ZF (corresponds to C3) if x = y
1784 //
1785 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
1786 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code)
1787 void fcmp(Register tmp);
1788 // Variant of the above which allows y to be further down the stack
1789 // and which only pops x and y if specified. If pop_right is
1790 // specified then pop_left must also be specified.
1791 void fcmp(Register tmp, int index, bool pop_left, bool pop_right);
1792
1793 // Floating-point comparison for Java
1794 // Compares the top-most stack entries on the FPU stack and stores the result in dst.
1795 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
1796 // (semantics as described in JVM spec.)
1797 void fcmp2int(Register dst, bool unordered_is_less);
1798 // Variant of the above which allows y to be further down the stack
1799 // and which only pops x and y if specified. If pop_right is
1800 // specified then pop_left must also be specified.
1801 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right);
1802
1803 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards)
1804 // tmp is a temporary register, if none is available use noreg
1805 void fremr(Register tmp);
1806
1807
1808 // same as fcmp2int, but using SSE2
1809 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
1810 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
1811
1812 // Inlined sin/cos generator for Java; must not use CPU instruction
1813 // directly on Intel as it does not have high enough precision
1814 // outside of the range [-pi/4, pi/4]. Extra argument indicate the
1815 // number of FPU stack slots in use; all but the topmost will
1816 // require saving if a slow case is necessary. Assumes argument is
1817 // on FP TOS; result is on FP TOS. No cpu registers are changed by
1818 // this code.
1819 void trigfunc(char trig, int num_fpu_regs_in_use = 1);
1820
1821 // branch to L if FPU flag C2 is set/not set
1822 // tmp is a temporary register, if none is available use noreg
1823 void jC2 (Register tmp, Label& L);
1824 void jnC2(Register tmp, Label& L);
1825
1826 // Pop ST (ffree & fincstp combined)
1827 void fpop();
1828
1829 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack
1830 void push_fTOS();
1831
1832 // pops double TOS element from CPU stack and pushes on FPU stack
1833 void pop_fTOS();
1834
1835 void empty_FPU_stack();
1836
1837 void push_IU_state();
1838 void pop_IU_state();
1839
1840 void push_FPU_state();
1841 void pop_FPU_state();
1842
1843 void push_CPU_state();
1844 void pop_CPU_state();
1845
1846 // Round up to a power of two
1847 void round_to(Register reg, int modulus);
1848
1849 // Callee saved registers handling
1850 void push_callee_saved_registers();
1851 void pop_callee_saved_registers();
1852
1853 // allocation
1854 void eden_allocate(
1855 Register obj, // result: pointer to object after successful allocation
1856 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1857 int con_size_in_bytes, // object size in bytes if known at compile time
1858 Register t1, // temp register
1859 Label& slow_case // continuation point if fast allocation fails
1860 );
1861 void tlab_allocate(
1862 Register obj, // result: pointer to object after successful allocation
1863 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1864 int con_size_in_bytes, // object size in bytes if known at compile time
1865 Register t1, // temp register
1866 Register t2, // temp register
1867 Label& slow_case // continuation point if fast allocation fails
1868 );
1869 Register tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); // returns TLS address
1870 void incr_allocated_bytes(Register thread,
1871 Register var_size_in_bytes, int con_size_in_bytes,
1872 Register t1 = noreg);
1873
1874 // interface method calling
1875 void lookup_interface_method(Register recv_klass,
1876 Register intf_klass,
1877 RegisterOrConstant itable_index,
1878 Register method_result,
1879 Register scan_temp,
1880 Label& no_such_interface);
1881
1882 // Test sub_klass against super_klass, with fast and slow paths.
1883
1884 // The fast path produces a tri-state answer: yes / no / maybe-slow.
1885 // One of the three labels can be NULL, meaning take the fall-through.
1886 // If super_check_offset is -1, the value is loaded up from super_klass.
1887 // No registers are killed, except temp_reg.
1888 void check_klass_subtype_fast_path(Register sub_klass,
1889 Register super_klass,
1890 Register temp_reg,
1891 Label* L_success,
1892 Label* L_failure,
1893 Label* L_slow_path,
1894 RegisterOrConstant super_check_offset = RegisterOrConstant(-1));
1895
1896 // The rest of the type check; must be wired to a corresponding fast path.
1897 // It does not repeat the fast path logic, so don't use it standalone.
1898 // The temp_reg and temp2_reg can be noreg, if no temps are available.
1899 // Updates the sub's secondary super cache as necessary.
1900 // If set_cond_codes, condition codes will be Z on success, NZ on failure.
1901 void check_klass_subtype_slow_path(Register sub_klass,
1902 Register super_klass,
1903 Register temp_reg,
1904 Register temp2_reg,
1905 Label* L_success,
1906 Label* L_failure,
1907 bool set_cond_codes = false);
1908
1909 // Simplified, combined version, good for typical uses.
1910 // Falls through on failure.
1911 void check_klass_subtype(Register sub_klass,
1912 Register super_klass,
1913 Register temp_reg,
1914 Label& L_success);
1915
1916 // method handles (JSR 292)
1917 void check_method_handle_type(Register mtype_reg, Register mh_reg,
1918 Register temp_reg,
1919 Label& wrong_method_type);
1920 void load_method_handle_vmslots(Register vmslots_reg, Register mh_reg,
1921 Register temp_reg);
1922 void jump_to_method_handle_entry(Register mh_reg, Register temp_reg);
1923 Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0);
1924
1925
1926 //----
1927 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0
1928
1929 // Debugging
1930
1931 // only if +VerifyOops
1932 void verify_oop(Register reg, const char* s = "broken oop");
1933 void verify_oop_addr(Address addr, const char * s = "broken oop addr");
1934
1935 // only if +VerifyFPU
1936 void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
1937
1938 // prints msg, dumps registers and stops execution
1939 void stop(const char* msg);
1940
1941 // prints msg and continues
1942 void warn(const char* msg);
1943
1944 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg);
1945 static void debug64(char* msg, int64_t pc, int64_t regs[]);
1946
1947 void os_breakpoint();
1948
1949 void untested() { stop("untested"); }
1950
1951 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, 1024, "unimplemented: %s", what); stop(b); }
1952
1953 void should_not_reach_here() { stop("should not reach here"); }
1954
1955 void print_CPU_state();
1956
1957 // Stack overflow checking
1958 void bang_stack_with_offset(int offset) {
1959 // stack grows down, caller passes positive offset
1960 assert(offset > 0, "must bang with negative offset");
1961 movl(Address(rsp, (-offset)), rax);
1962 }
1963
1964 // Writes to stack successive pages until offset reached to check for
1965 // stack overflow + shadow pages. Also, clobbers tmp
1966 void bang_stack_size(Register size, Register tmp);
1967
1968 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
1969 Register tmp,
1970 int offset);
1971
1972 // Support for serializing memory accesses between threads
1973 void serialize_memory(Register thread, Register tmp);
1974
1975 void verify_tlab();
1976
1977 // Biased locking support
1978 // lock_reg and obj_reg must be loaded up with the appropriate values.
1979 // swap_reg must be rax, and is killed.
1980 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
1981 // be killed; if not supplied, push/pop will be used internally to
1982 // allocate a temporary (inefficient, avoid if possible).
1983 // Optional slow case is for implementations (interpreter and C1) which branch to
1984 // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
1985 // Returns offset of first potentially-faulting instruction for null
1986 // check info (currently consumed only by C1). If
1987 // swap_reg_contains_mark is true then returns -1 as it is assumed
1988 // the calling code has already passed any potential faults.
1989 int biased_locking_enter(Register lock_reg, Register obj_reg,
1990 Register swap_reg, Register tmp_reg,
1991 bool swap_reg_contains_mark,
1992 Label& done, Label* slow_case = NULL,
1993 BiasedLockingCounters* counters = NULL);
1994 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
1995
1996
1997 Condition negate_condition(Condition cond);
1998
1999 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit
2000 // operands. In general the names are modified to avoid hiding the instruction in Assembler
2001 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
2002 // here in MacroAssembler. The major exception to this rule is call
2003
2004 // Arithmetics
2005
2006
2007 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; }
2008 void addptr(Address dst, Register src);
2009
2010 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); }
2011 void addptr(Register dst, int32_t src);
2012 void addptr(Register dst, Register src);
2013
2014 void andptr(Register dst, int32_t src);
2015 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; }
2016
2017 void cmp8(AddressLiteral src1, int imm);
2018
2019 // renamed to drag out the casting of address to int32_t/intptr_t
2020 void cmp32(Register src1, int32_t imm);
2021
2022 void cmp32(AddressLiteral src1, int32_t imm);
2023 // compare reg - mem, or reg - &mem
2024 void cmp32(Register src1, AddressLiteral src2);
2025
2026 void cmp32(Register src1, Address src2);
2027
2028 #ifndef _LP64
2029 void cmpoop(Address dst, jobject obj);
2030 void cmpoop(Register dst, jobject obj);
2031 #endif // _LP64
2032
2033 // NOTE src2 must be the lval. This is NOT an mem-mem compare
2034 void cmpptr(Address src1, AddressLiteral src2);
2035
2036 void cmpptr(Register src1, AddressLiteral src2);
2037
2038 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2039 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2040 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2041
2042 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2043 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2044
2045 // cmp64 to avoild hiding cmpq
2046 void cmp64(Register src1, AddressLiteral src);
2047
2048 void cmpxchgptr(Register reg, Address adr);
2049
2050 void locked_cmpxchgptr(Register reg, AddressLiteral adr);
2051
2052
2053 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); }
2054
2055
2056 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); }
2057
2058 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); }
2059
2060 void shlptr(Register dst, int32_t shift);
2061 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); }
2062
2063 void shrptr(Register dst, int32_t shift);
2064 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); }
2065
2066 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); }
2067 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); }
2068
2069 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
2070
2071 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
2072 void subptr(Register dst, int32_t src);
2073 void subptr(Register dst, Register src);
2074
2075
2076 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
2077 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
2078
2079 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
2080 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
2081
2082 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; }
2083
2084
2085
2086 // Helper functions for statistics gathering.
2087 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes.
2088 void cond_inc32(Condition cond, AddressLiteral counter_addr);
2089 // Unconditional atomic increment.
2090 void atomic_incl(AddressLiteral counter_addr);
2091
2092 void lea(Register dst, AddressLiteral adr);
2093 void lea(Address dst, AddressLiteral adr);
2094 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); }
2095
2096 void leal32(Register dst, Address src) { leal(dst, src); }
2097
2098 // Import other testl() methods from the parent class or else
2099 // they will be hidden by the following overriding declaration.
2100 using Assembler::testl;
2101 void testl(Register dst, AddressLiteral src);
2102
2103 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2104 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2105 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2106
2107 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); }
2108 void testptr(Register src1, Register src2);
2109
2110 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
2111 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
2112
2113 // Calls
2114
2115 void call(Label& L, relocInfo::relocType rtype);
2116 void call(Register entry);
2117
2118 // NOTE: this call tranfers to the effective address of entry NOT
2119 // the address contained by entry. This is because this is more natural
2120 // for jumps/calls.
2121 void call(AddressLiteral entry);
2122
2123 // Jumps
2124
2125 // NOTE: these jumps tranfer to the effective address of dst NOT
2126 // the address contained by dst. This is because this is more natural
2127 // for jumps/calls.
2128 void jump(AddressLiteral dst);
2129 void jump_cc(Condition cc, AddressLiteral dst);
2130
2131 // 32bit can do a case table jump in one instruction but we no longer allow the base
2132 // to be installed in the Address class. This jump will tranfers to the address
2133 // contained in the location described by entry (not the address of entry)
2134 void jump(ArrayAddress entry);
2135
2136 // Floating
2137
2138 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); }
2139 void andpd(XMMRegister dst, AddressLiteral src);
2140
2141 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); }
2142 void comiss(XMMRegister dst, AddressLiteral src);
2143
2144 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); }
2145 void comisd(XMMRegister dst, AddressLiteral src);
2146
2147 void fadd_s(Address src) { Assembler::fadd_s(src); }
2148 void fadd_s(AddressLiteral src) { Assembler::fadd_s(as_Address(src)); }
2149
2150 void fldcw(Address src) { Assembler::fldcw(src); }
2151 void fldcw(AddressLiteral src);
2152
2153 void fld_s(int index) { Assembler::fld_s(index); }
2154 void fld_s(Address src) { Assembler::fld_s(src); }
2155 void fld_s(AddressLiteral src);
2156
2157 void fld_d(Address src) { Assembler::fld_d(src); }
2158 void fld_d(AddressLiteral src);
2159
2160 void fld_x(Address src) { Assembler::fld_x(src); }
2161 void fld_x(AddressLiteral src);
2162
2163 void fmul_s(Address src) { Assembler::fmul_s(src); }
2164 void fmul_s(AddressLiteral src) { Assembler::fmul_s(as_Address(src)); }
2165
2166 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); }
2167 void ldmxcsr(AddressLiteral src);
2168
2169 private:
2170 // these are private because users should be doing movflt/movdbl
2171
2172 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); }
2173 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); }
2174 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); }
2175 void movss(XMMRegister dst, AddressLiteral src);
2176
2177 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); }
2178 void movlpd(XMMRegister dst, AddressLiteral src);
2179
2180 public:
2181
2182 void addsd(XMMRegister dst, XMMRegister src) { Assembler::addsd(dst, src); }
2183 void addsd(XMMRegister dst, Address src) { Assembler::addsd(dst, src); }
2184 void addsd(XMMRegister dst, AddressLiteral src) { Assembler::addsd(dst, as_Address(src)); }
2185
2186 void addss(XMMRegister dst, XMMRegister src) { Assembler::addss(dst, src); }
2187 void addss(XMMRegister dst, Address src) { Assembler::addss(dst, src); }
2188 void addss(XMMRegister dst, AddressLiteral src) { Assembler::addss(dst, as_Address(src)); }
2189
2190 void divsd(XMMRegister dst, XMMRegister src) { Assembler::divsd(dst, src); }
2191 void divsd(XMMRegister dst, Address src) { Assembler::divsd(dst, src); }
2192 void divsd(XMMRegister dst, AddressLiteral src) { Assembler::divsd(dst, as_Address(src)); }
2193
2194 void divss(XMMRegister dst, XMMRegister src) { Assembler::divss(dst, src); }
2195 void divss(XMMRegister dst, Address src) { Assembler::divss(dst, src); }
2196 void divss(XMMRegister dst, AddressLiteral src) { Assembler::divss(dst, as_Address(src)); }
2197
2198 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); }
2199 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); }
2200 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); }
2201 void movsd(XMMRegister dst, AddressLiteral src) { Assembler::movsd(dst, as_Address(src)); }
2202
2203 void mulsd(XMMRegister dst, XMMRegister src) { Assembler::mulsd(dst, src); }
2204 void mulsd(XMMRegister dst, Address src) { Assembler::mulsd(dst, src); }
2205 void mulsd(XMMRegister dst, AddressLiteral src) { Assembler::mulsd(dst, as_Address(src)); }
2206
2207 void mulss(XMMRegister dst, XMMRegister src) { Assembler::mulss(dst, src); }
2208 void mulss(XMMRegister dst, Address src) { Assembler::mulss(dst, src); }
2209 void mulss(XMMRegister dst, AddressLiteral src) { Assembler::mulss(dst, as_Address(src)); }
2210
2211 void sqrtsd(XMMRegister dst, XMMRegister src) { Assembler::sqrtsd(dst, src); }
2212 void sqrtsd(XMMRegister dst, Address src) { Assembler::sqrtsd(dst, src); }
2213 void sqrtsd(XMMRegister dst, AddressLiteral src) { Assembler::sqrtsd(dst, as_Address(src)); }
2214
2215 void sqrtss(XMMRegister dst, XMMRegister src) { Assembler::sqrtss(dst, src); }
2216 void sqrtss(XMMRegister dst, Address src) { Assembler::sqrtss(dst, src); }
2217 void sqrtss(XMMRegister dst, AddressLiteral src) { Assembler::sqrtss(dst, as_Address(src)); }
2218
2219 void subsd(XMMRegister dst, XMMRegister src) { Assembler::subsd(dst, src); }
2220 void subsd(XMMRegister dst, Address src) { Assembler::subsd(dst, src); }
2221 void subsd(XMMRegister dst, AddressLiteral src) { Assembler::subsd(dst, as_Address(src)); }
2222
2223 void subss(XMMRegister dst, XMMRegister src) { Assembler::subss(dst, src); }
2224 void subss(XMMRegister dst, Address src) { Assembler::subss(dst, src); }
2225 void subss(XMMRegister dst, AddressLiteral src) { Assembler::subss(dst, as_Address(src)); }
2226
2227 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); }
2228 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); }
2229 void ucomiss(XMMRegister dst, AddressLiteral src);
2230
2231 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); }
2232 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); }
2233 void ucomisd(XMMRegister dst, AddressLiteral src);
2234
2235 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
2236 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); }
2237 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); }
2238 void xorpd(XMMRegister dst, AddressLiteral src);
2239
2240 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
2241 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); }
2242 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); }
2243 void xorps(XMMRegister dst, AddressLiteral src);
2244
2245 // Data
2246
2247 void cmov(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2248
2249 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2250 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2251
2252 void movoop(Register dst, jobject obj);
2253 void movoop(Address dst, jobject obj);
2254
2255 void movptr(ArrayAddress dst, Register src);
2256 // can this do an lea?
2257 void movptr(Register dst, ArrayAddress src);
2258
2259 void movptr(Register dst, Address src);
2260
2261 void movptr(Register dst, AddressLiteral src);
2262
2263 void movptr(Register dst, intptr_t src);
2264 void movptr(Register dst, Register src);
2265 void movptr(Address dst, intptr_t src);
2266
2267 void movptr(Address dst, Register src);
2268
2269 #ifdef _LP64
2270 // Generally the next two are only used for moving NULL
2271 // Although there are situations in initializing the mark word where
2272 // they could be used. They are dangerous.
2273
2274 // They only exist on LP64 so that int32_t and intptr_t are not the same
2275 // and we have ambiguous declarations.
2276
2277 void movptr(Address dst, int32_t imm32);
2278 void movptr(Register dst, int32_t imm32);
2279 #endif // _LP64
2280
2281 // to avoid hiding movl
2282 void mov32(AddressLiteral dst, Register src);
2283 void mov32(Register dst, AddressLiteral src);
2284
2285 // to avoid hiding movb
2286 void movbyte(ArrayAddress dst, int src);
2287
2288 // Can push value or effective address
2289 void pushptr(AddressLiteral src);
2290
2291 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); }
2292 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); }
2293
2294 void pushoop(jobject obj);
2295
2296 // sign extend as need a l to ptr sized element
2297 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); }
2298 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); }
2299
2300 // IndexOf strings.
2301 // Small strings are loaded through stack if they cross page boundary.
2302 void string_indexof(Register str1, Register str2,
2303 Register cnt1, Register cnt2,
2304 int int_cnt2, Register result,
2305 XMMRegister vec, Register tmp);
2306
2307 // IndexOf for constant substrings with size >= 8 elements
2308 // which don't need to be loaded through stack.
2309 void string_indexofC8(Register str1, Register str2,
2310 Register cnt1, Register cnt2,
2311 int int_cnt2, Register result,
2312 XMMRegister vec, Register tmp);
2313
2314 // Smallest code: we don't need to load through stack,
2315 // check string tail.
2316
2317 // Compare strings.
2318 void string_compare(Register str1, Register str2,
2319 Register cnt1, Register cnt2, Register result,
2320 XMMRegister vec1);
2321
2322 // Compare char[] arrays.
2323 void char_arrays_equals(bool is_array_equ, Register ary1, Register ary2,
2324 Register limit, Register result, Register chr,
2325 XMMRegister vec1, XMMRegister vec2);
2326
2327 // Fill primitive arrays
2328 void generate_fill(BasicType t, bool aligned,
2329 Register to, Register value, Register count,
2330 Register rtmp, XMMRegister xtmp);
2331
2332 #undef VIRTUAL
2333
2334 };
2335
2336 /**
2337 * class SkipIfEqual:
2338 *
2339 * Instantiating this class will result in assembly code being output that will
2340 * jump around any code emitted between the creation of the instance and it's
2341 * automatic destruction at the end of a scope block, depending on the value of
2342 * the flag passed to the constructor, which will be checked at run-time.
2343 */
2344 class SkipIfEqual {
2345 private:
2346 MacroAssembler* _masm;
2347 Label _label;
2348
2349 public:
2350 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
2351 ~SkipIfEqual();
2352 };
2353
2354 #ifdef ASSERT
2355 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; }
2356 #endif
2357
2358 #endif // CPU_X86_VM_ASSEMBLER_X86_HPP