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src/cpu/x86/vm/assembler_x86.hpp@e7715c222897
src/cpu/x86/vm/assembler_x86.hpp
Tue, 12 Jun 2012 10:02:36 +0200
- author
- roland
- date
- Tue, 12 Jun 2012 10:02:36 +0200
- changeset 3844
- e7715c222897
- parent 3787
- 6759698e3140
- child 3882
- 8c92982cbbc4
- permissions
- -rw-r--r--
7174532: jdk/test/java/lang/Math/WorstCaseTests.java failing on x86
Summary: increase precision on x86 for the steps of the computation of exp and pow.
Reviewed-by: kvn
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 */
25 #ifndef CPU_X86_VM_ASSEMBLER_X86_HPP
26 #define CPU_X86_VM_ASSEMBLER_X86_HPP
28 class BiasedLockingCounters;
30 // Contains all the definitions needed for x86 assembly code generation.
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 };
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...
57 #ifdef _WIN64
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);
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);
69 #else
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);
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);
87 #endif // _WIN64
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 // |-------------------------------------------------------|
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);
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);
127 REGISTER_DECLARATION(Register, rscratch1, r10); // volatile
128 REGISTER_DECLARATION(Register, rscratch2, r11); // volatile
130 REGISTER_DECLARATION(Register, r12_heapbase, r12); // callee-saved
131 REGISTER_DECLARATION(Register, r15_thread, r15); // callee-saved
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
140 #endif // _LP64
142 // JSR 292 fixed register usages:
143 REGISTER_DECLARATION(Register, rbp_mh_SP_save, rbp);
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.
151 class ArrayAddress;
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 }
179 private:
180 Register _base;
181 Register _index;
182 ScaleFactor _scale;
183 int _disp;
184 RelocationHolder _rspec;
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);
192 public:
194 int disp() { return _disp; }
195 // creation
196 Address()
197 : _base(noreg),
198 _index(noreg),
199 _scale(no_scale),
200 _disp(0) {
201 }
203 // No default displacement otherwise Register can be implicitly
204 // converted to 0(Register) which is quite a different animal.
206 Address(Register base, int disp)
207 : _base(base),
208 _index(noreg),
209 _scale(no_scale),
210 _disp(disp) {
211 }
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 }
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 }
232 Address plus_disp(int disp) const {
233 Address a = (*this);
234 a._disp += disp;
235 return a;
236 }
237 Address plus_disp(RegisterOrConstant disp, ScaleFactor scale = times_1) const {
238 Address a = (*this);
239 a._disp += disp.constant_or_zero() * scale_size(scale);
240 if (disp.is_register()) {
241 assert(!a.index()->is_valid(), "competing indexes");
242 a._index = disp.as_register();
243 a._scale = scale;
244 }
245 return a;
246 }
247 bool is_same_address(Address a) const {
248 // disregard _rspec
249 return _base == a._base && _disp == a._disp && _index == a._index && _scale == a._scale;
250 }
252 // The following two overloads are used in connection with the
253 // ByteSize type (see sizes.hpp). They simplify the use of
254 // ByteSize'd arguments in assembly code. Note that their equivalent
255 // for the optimized build are the member functions with int disp
256 // argument since ByteSize is mapped to an int type in that case.
257 //
258 // Note: DO NOT introduce similar overloaded functions for WordSize
259 // arguments as in the optimized mode, both ByteSize and WordSize
260 // are mapped to the same type and thus the compiler cannot make a
261 // distinction anymore (=> compiler errors).
263 #ifdef ASSERT
264 Address(Register base, ByteSize disp)
265 : _base(base),
266 _index(noreg),
267 _scale(no_scale),
268 _disp(in_bytes(disp)) {
269 }
271 Address(Register base, Register index, ScaleFactor scale, ByteSize disp)
272 : _base(base),
273 _index(index),
274 _scale(scale),
275 _disp(in_bytes(disp)) {
276 assert(!index->is_valid() == (scale == Address::no_scale),
277 "inconsistent address");
278 }
280 Address(Register base, RegisterOrConstant index, ScaleFactor scale, ByteSize disp)
281 : _base (base),
282 _index(index.register_or_noreg()),
283 _scale(scale),
284 _disp (in_bytes(disp) + (index.constant_or_zero() * scale_size(scale))) {
285 if (!index.is_register()) scale = Address::no_scale;
286 assert(!_index->is_valid() == (scale == Address::no_scale),
287 "inconsistent address");
288 }
290 #endif // ASSERT
292 // accessors
293 bool uses(Register reg) const { return _base == reg || _index == reg; }
294 Register base() const { return _base; }
295 Register index() const { return _index; }
296 ScaleFactor scale() const { return _scale; }
297 int disp() const { return _disp; }
299 // Convert the raw encoding form into the form expected by the constructor for
300 // Address. An index of 4 (rsp) corresponds to having no index, so convert
301 // that to noreg for the Address constructor.
302 static Address make_raw(int base, int index, int scale, int disp, bool disp_is_oop);
304 static Address make_array(ArrayAddress);
306 private:
307 bool base_needs_rex() const {
308 return _base != noreg && _base->encoding() >= 8;
309 }
311 bool index_needs_rex() const {
312 return _index != noreg &&_index->encoding() >= 8;
313 }
315 relocInfo::relocType reloc() const { return _rspec.type(); }
317 friend class Assembler;
318 friend class MacroAssembler;
319 friend class LIR_Assembler; // base/index/scale/disp
320 };
322 //
323 // AddressLiteral has been split out from Address because operands of this type
324 // need to be treated specially on 32bit vs. 64bit platforms. By splitting it out
325 // the few instructions that need to deal with address literals are unique and the
326 // MacroAssembler does not have to implement every instruction in the Assembler
327 // in order to search for address literals that may need special handling depending
328 // on the instruction and the platform. As small step on the way to merging i486/amd64
329 // directories.
330 //
331 class AddressLiteral VALUE_OBJ_CLASS_SPEC {
332 friend class ArrayAddress;
333 RelocationHolder _rspec;
334 // Typically we use AddressLiterals we want to use their rval
335 // However in some situations we want the lval (effect address) of the item.
336 // We provide a special factory for making those lvals.
337 bool _is_lval;
339 // If the target is far we'll need to load the ea of this to
340 // a register to reach it. Otherwise if near we can do rip
341 // relative addressing.
343 address _target;
345 protected:
346 // creation
347 AddressLiteral()
348 : _is_lval(false),
349 _target(NULL)
350 {}
352 public:
355 AddressLiteral(address target, relocInfo::relocType rtype);
357 AddressLiteral(address target, RelocationHolder const& rspec)
358 : _rspec(rspec),
359 _is_lval(false),
360 _target(target)
361 {}
363 AddressLiteral addr() {
364 AddressLiteral ret = *this;
365 ret._is_lval = true;
366 return ret;
367 }
370 private:
372 address target() { return _target; }
373 bool is_lval() { return _is_lval; }
375 relocInfo::relocType reloc() const { return _rspec.type(); }
376 const RelocationHolder& rspec() const { return _rspec; }
378 friend class Assembler;
379 friend class MacroAssembler;
380 friend class Address;
381 friend class LIR_Assembler;
382 };
384 // Convience classes
385 class RuntimeAddress: public AddressLiteral {
387 public:
389 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {}
391 };
393 class OopAddress: public AddressLiteral {
395 public:
397 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){}
399 };
401 class ExternalAddress: public AddressLiteral {
402 private:
403 static relocInfo::relocType reloc_for_target(address target) {
404 // Sometimes ExternalAddress is used for values which aren't
405 // exactly addresses, like the card table base.
406 // external_word_type can't be used for values in the first page
407 // so just skip the reloc in that case.
408 return external_word_Relocation::can_be_relocated(target) ? relocInfo::external_word_type : relocInfo::none;
409 }
411 public:
413 ExternalAddress(address target) : AddressLiteral(target, reloc_for_target(target)) {}
415 };
417 class InternalAddress: public AddressLiteral {
419 public:
421 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {}
423 };
425 // x86 can do array addressing as a single operation since disp can be an absolute
426 // address amd64 can't. We create a class that expresses the concept but does extra
427 // magic on amd64 to get the final result
429 class ArrayAddress VALUE_OBJ_CLASS_SPEC {
430 private:
432 AddressLiteral _base;
433 Address _index;
435 public:
437 ArrayAddress() {};
438 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {};
439 AddressLiteral base() { return _base; }
440 Address index() { return _index; }
442 };
444 const int FPUStateSizeInWords = NOT_LP64(27) LP64_ONLY( 512 / wordSize);
446 // The Intel x86/Amd64 Assembler: Pure assembler doing NO optimizations on the instruction
447 // level (e.g. mov rax, 0 is not translated into xor rax, rax!); i.e., what you write
448 // is what you get. The Assembler is generating code into a CodeBuffer.
450 class Assembler : public AbstractAssembler {
451 friend class AbstractAssembler; // for the non-virtual hack
452 friend class LIR_Assembler; // as_Address()
453 friend class StubGenerator;
455 public:
456 enum Condition { // The x86 condition codes used for conditional jumps/moves.
457 zero = 0x4,
458 notZero = 0x5,
459 equal = 0x4,
460 notEqual = 0x5,
461 less = 0xc,
462 lessEqual = 0xe,
463 greater = 0xf,
464 greaterEqual = 0xd,
465 below = 0x2,
466 belowEqual = 0x6,
467 above = 0x7,
468 aboveEqual = 0x3,
469 overflow = 0x0,
470 noOverflow = 0x1,
471 carrySet = 0x2,
472 carryClear = 0x3,
473 negative = 0x8,
474 positive = 0x9,
475 parity = 0xa,
476 noParity = 0xb
477 };
479 enum Prefix {
480 // segment overrides
481 CS_segment = 0x2e,
482 SS_segment = 0x36,
483 DS_segment = 0x3e,
484 ES_segment = 0x26,
485 FS_segment = 0x64,
486 GS_segment = 0x65,
488 REX = 0x40,
490 REX_B = 0x41,
491 REX_X = 0x42,
492 REX_XB = 0x43,
493 REX_R = 0x44,
494 REX_RB = 0x45,
495 REX_RX = 0x46,
496 REX_RXB = 0x47,
498 REX_W = 0x48,
500 REX_WB = 0x49,
501 REX_WX = 0x4A,
502 REX_WXB = 0x4B,
503 REX_WR = 0x4C,
504 REX_WRB = 0x4D,
505 REX_WRX = 0x4E,
506 REX_WRXB = 0x4F,
508 VEX_3bytes = 0xC4,
509 VEX_2bytes = 0xC5
510 };
512 enum VexPrefix {
513 VEX_B = 0x20,
514 VEX_X = 0x40,
515 VEX_R = 0x80,
516 VEX_W = 0x80
517 };
519 enum VexSimdPrefix {
520 VEX_SIMD_NONE = 0x0,
521 VEX_SIMD_66 = 0x1,
522 VEX_SIMD_F3 = 0x2,
523 VEX_SIMD_F2 = 0x3
524 };
526 enum VexOpcode {
527 VEX_OPCODE_NONE = 0x0,
528 VEX_OPCODE_0F = 0x1,
529 VEX_OPCODE_0F_38 = 0x2,
530 VEX_OPCODE_0F_3A = 0x3
531 };
533 enum WhichOperand {
534 // input to locate_operand, and format code for relocations
535 imm_operand = 0, // embedded 32-bit|64-bit immediate operand
536 disp32_operand = 1, // embedded 32-bit displacement or address
537 call32_operand = 2, // embedded 32-bit self-relative displacement
538 #ifndef _LP64
539 _WhichOperand_limit = 3
540 #else
541 narrow_oop_operand = 3, // embedded 32-bit immediate narrow oop
542 _WhichOperand_limit = 4
543 #endif
544 };
548 // NOTE: The general philopsophy of the declarations here is that 64bit versions
549 // of instructions are freely declared without the need for wrapping them an ifdef.
550 // (Some dangerous instructions are ifdef's out of inappropriate jvm's.)
551 // In the .cpp file the implementations are wrapped so that they are dropped out
552 // of the resulting jvm. This is done mostly to keep the footprint of KERNEL
553 // to the size it was prior to merging up the 32bit and 64bit assemblers.
554 //
555 // This does mean you'll get a linker/runtime error if you use a 64bit only instruction
556 // in a 32bit vm. This is somewhat unfortunate but keeps the ifdef noise down.
558 private:
561 // 64bit prefixes
562 int prefix_and_encode(int reg_enc, bool byteinst = false);
563 int prefixq_and_encode(int reg_enc);
565 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false);
566 int prefixq_and_encode(int dst_enc, int src_enc);
568 void prefix(Register reg);
569 void prefix(Address adr);
570 void prefixq(Address adr);
572 void prefix(Address adr, Register reg, bool byteinst = false);
573 void prefix(Address adr, XMMRegister reg);
574 void prefixq(Address adr, Register reg);
575 void prefixq(Address adr, XMMRegister reg);
577 void prefetch_prefix(Address src);
579 void rex_prefix(Address adr, XMMRegister xreg,
580 VexSimdPrefix pre, VexOpcode opc, bool rex_w);
581 int rex_prefix_and_encode(int dst_enc, int src_enc,
582 VexSimdPrefix pre, VexOpcode opc, bool rex_w);
584 void vex_prefix(bool vex_r, bool vex_b, bool vex_x, bool vex_w,
585 int nds_enc, VexSimdPrefix pre, VexOpcode opc,
586 bool vector256);
588 void vex_prefix(Address adr, int nds_enc, int xreg_enc,
589 VexSimdPrefix pre, VexOpcode opc,
590 bool vex_w, bool vector256);
592 void vex_prefix(XMMRegister dst, XMMRegister nds, Address src,
593 VexSimdPrefix pre, bool vector256 = false) {
594 vex_prefix(src, nds->encoding(), dst->encoding(),
595 pre, VEX_OPCODE_0F, false, vector256);
596 }
598 int vex_prefix_and_encode(int dst_enc, int nds_enc, int src_enc,
599 VexSimdPrefix pre, VexOpcode opc,
600 bool vex_w, bool vector256);
602 int vex_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src,
603 VexSimdPrefix pre, bool vector256 = false) {
604 return vex_prefix_and_encode(dst->encoding(), nds->encoding(), src->encoding(),
605 pre, VEX_OPCODE_0F, false, vector256);
606 }
608 void simd_prefix(XMMRegister xreg, XMMRegister nds, Address adr,
609 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F,
610 bool rex_w = false, bool vector256 = false);
612 void simd_prefix(XMMRegister dst, Address src,
613 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F) {
614 simd_prefix(dst, xnoreg, src, pre, opc);
615 }
616 void simd_prefix(Address dst, XMMRegister src, VexSimdPrefix pre) {
617 simd_prefix(src, dst, pre);
618 }
619 void simd_prefix_q(XMMRegister dst, XMMRegister nds, Address src,
620 VexSimdPrefix pre) {
621 bool rex_w = true;
622 simd_prefix(dst, nds, src, pre, VEX_OPCODE_0F, rex_w);
623 }
626 int simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, XMMRegister src,
627 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F,
628 bool rex_w = false, bool vector256 = false);
630 int simd_prefix_and_encode(XMMRegister dst, XMMRegister src,
631 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F) {
632 return simd_prefix_and_encode(dst, xnoreg, src, pre, opc);
633 }
635 // Move/convert 32-bit integer value.
636 int simd_prefix_and_encode(XMMRegister dst, XMMRegister nds, Register src,
637 VexSimdPrefix pre) {
638 // It is OK to cast from Register to XMMRegister to pass argument here
639 // since only encoding is used in simd_prefix_and_encode() and number of
640 // Gen and Xmm registers are the same.
641 return simd_prefix_and_encode(dst, nds, as_XMMRegister(src->encoding()), pre);
642 }
643 int simd_prefix_and_encode(XMMRegister dst, Register src, VexSimdPrefix pre) {
644 return simd_prefix_and_encode(dst, xnoreg, src, pre);
645 }
646 int simd_prefix_and_encode(Register dst, XMMRegister src,
647 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F) {
648 return simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, pre, opc);
649 }
651 // Move/convert 64-bit integer value.
652 int simd_prefix_and_encode_q(XMMRegister dst, XMMRegister nds, Register src,
653 VexSimdPrefix pre) {
654 bool rex_w = true;
655 return simd_prefix_and_encode(dst, nds, as_XMMRegister(src->encoding()), pre, VEX_OPCODE_0F, rex_w);
656 }
657 int simd_prefix_and_encode_q(XMMRegister dst, Register src, VexSimdPrefix pre) {
658 return simd_prefix_and_encode_q(dst, xnoreg, src, pre);
659 }
660 int simd_prefix_and_encode_q(Register dst, XMMRegister src,
661 VexSimdPrefix pre, VexOpcode opc = VEX_OPCODE_0F) {
662 bool rex_w = true;
663 return simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, pre, opc, rex_w);
664 }
666 // Helper functions for groups of instructions
667 void emit_arith_b(int op1, int op2, Register dst, int imm8);
669 void emit_arith(int op1, int op2, Register dst, int32_t imm32);
670 // Force generation of a 4 byte immediate value even if it fits into 8bit
671 void emit_arith_imm32(int op1, int op2, Register dst, int32_t imm32);
672 // only 32bit??
673 void emit_arith(int op1, int op2, Register dst, jobject obj);
674 void emit_arith(int op1, int op2, Register dst, Register src);
676 void emit_operand(Register reg,
677 Register base, Register index, Address::ScaleFactor scale,
678 int disp,
679 RelocationHolder const& rspec,
680 int rip_relative_correction = 0);
682 void emit_operand(Register reg, Address adr, int rip_relative_correction = 0);
684 // operands that only take the original 32bit registers
685 void emit_operand32(Register reg, Address adr);
687 void emit_operand(XMMRegister reg,
688 Register base, Register index, Address::ScaleFactor scale,
689 int disp,
690 RelocationHolder const& rspec);
692 void emit_operand(XMMRegister reg, Address adr);
694 void emit_operand(MMXRegister reg, Address adr);
696 // workaround gcc (3.2.1-7) bug
697 void emit_operand(Address adr, MMXRegister reg);
700 // Immediate-to-memory forms
701 void emit_arith_operand(int op1, Register rm, Address adr, int32_t imm32);
703 void emit_farith(int b1, int b2, int i);
706 protected:
707 #ifdef ASSERT
708 void check_relocation(RelocationHolder const& rspec, int format);
709 #endif
711 inline void emit_long64(jlong x);
713 void emit_data(jint data, relocInfo::relocType rtype, int format);
714 void emit_data(jint data, RelocationHolder const& rspec, int format);
715 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0);
716 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0);
718 bool reachable(AddressLiteral adr) NOT_LP64({ return true;});
720 // These are all easily abused and hence protected
722 // 32BIT ONLY SECTION
723 #ifndef _LP64
724 // Make these disappear in 64bit mode since they would never be correct
725 void cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
726 void cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
728 void mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
729 void mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
731 void push_literal32(int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
732 #else
733 // 64BIT ONLY SECTION
734 void mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec); // 64BIT ONLY
736 void cmp_narrow_oop(Register src1, int32_t imm32, RelocationHolder const& rspec);
737 void cmp_narrow_oop(Address src1, int32_t imm32, RelocationHolder const& rspec);
739 void mov_narrow_oop(Register dst, int32_t imm32, RelocationHolder const& rspec);
740 void mov_narrow_oop(Address dst, int32_t imm32, RelocationHolder const& rspec);
741 #endif // _LP64
743 // These are unique in that we are ensured by the caller that the 32bit
744 // relative in these instructions will always be able to reach the potentially
745 // 64bit address described by entry. Since they can take a 64bit address they
746 // don't have the 32 suffix like the other instructions in this class.
748 void call_literal(address entry, RelocationHolder const& rspec);
749 void jmp_literal(address entry, RelocationHolder const& rspec);
751 // Avoid using directly section
752 // Instructions in this section are actually usable by anyone without danger
753 // of failure but have performance issues that are addressed my enhanced
754 // instructions which will do the proper thing base on the particular cpu.
755 // We protect them because we don't trust you...
757 // Don't use next inc() and dec() methods directly. INC & DEC instructions
758 // could cause a partial flag stall since they don't set CF flag.
759 // Use MacroAssembler::decrement() & MacroAssembler::increment() methods
760 // which call inc() & dec() or add() & sub() in accordance with
761 // the product flag UseIncDec value.
763 void decl(Register dst);
764 void decl(Address dst);
765 void decq(Register dst);
766 void decq(Address dst);
768 void incl(Register dst);
769 void incl(Address dst);
770 void incq(Register dst);
771 void incq(Address dst);
773 // New cpus require use of movsd and movss to avoid partial register stall
774 // when loading from memory. But for old Opteron use movlpd instead of movsd.
775 // The selection is done in MacroAssembler::movdbl() and movflt().
777 // Move Scalar Single-Precision Floating-Point Values
778 void movss(XMMRegister dst, Address src);
779 void movss(XMMRegister dst, XMMRegister src);
780 void movss(Address dst, XMMRegister src);
782 // Move Scalar Double-Precision Floating-Point Values
783 void movsd(XMMRegister dst, Address src);
784 void movsd(XMMRegister dst, XMMRegister src);
785 void movsd(Address dst, XMMRegister src);
786 void movlpd(XMMRegister dst, Address src);
788 // New cpus require use of movaps and movapd to avoid partial register stall
789 // when moving between registers.
790 void movaps(XMMRegister dst, XMMRegister src);
791 void movapd(XMMRegister dst, XMMRegister src);
793 // End avoid using directly
796 // Instruction prefixes
797 void prefix(Prefix p);
799 public:
801 // Creation
802 Assembler(CodeBuffer* code) : AbstractAssembler(code) {}
804 // Decoding
805 static address locate_operand(address inst, WhichOperand which);
806 static address locate_next_instruction(address inst);
808 // Utilities
809 static bool is_polling_page_far() NOT_LP64({ return false;});
811 // Generic instructions
812 // Does 32bit or 64bit as needed for the platform. In some sense these
813 // belong in macro assembler but there is no need for both varieties to exist
815 void lea(Register dst, Address src);
817 void mov(Register dst, Register src);
819 void pusha();
820 void popa();
822 void pushf();
823 void popf();
825 void push(int32_t imm32);
827 void push(Register src);
829 void pop(Register dst);
831 // These are dummies to prevent surprise implicit conversions to Register
832 void push(void* v);
833 void pop(void* v);
835 // These do register sized moves/scans
836 void rep_mov();
837 void rep_set();
838 void repne_scan();
839 #ifdef _LP64
840 void repne_scanl();
841 #endif
843 // Vanilla instructions in lexical order
845 void adcl(Address dst, int32_t imm32);
846 void adcl(Address dst, Register src);
847 void adcl(Register dst, int32_t imm32);
848 void adcl(Register dst, Address src);
849 void adcl(Register dst, Register src);
851 void adcq(Register dst, int32_t imm32);
852 void adcq(Register dst, Address src);
853 void adcq(Register dst, Register src);
855 void addl(Address dst, int32_t imm32);
856 void addl(Address dst, Register src);
857 void addl(Register dst, int32_t imm32);
858 void addl(Register dst, Address src);
859 void addl(Register dst, Register src);
861 void addq(Address dst, int32_t imm32);
862 void addq(Address dst, Register src);
863 void addq(Register dst, int32_t imm32);
864 void addq(Register dst, Address src);
865 void addq(Register dst, Register src);
867 void addr_nop_4();
868 void addr_nop_5();
869 void addr_nop_7();
870 void addr_nop_8();
872 // Add Scalar Double-Precision Floating-Point Values
873 void addsd(XMMRegister dst, Address src);
874 void addsd(XMMRegister dst, XMMRegister src);
876 // Add Scalar Single-Precision Floating-Point Values
877 void addss(XMMRegister dst, Address src);
878 void addss(XMMRegister dst, XMMRegister src);
880 void andl(Address dst, int32_t imm32);
881 void andl(Register dst, int32_t imm32);
882 void andl(Register dst, Address src);
883 void andl(Register dst, Register src);
885 void andq(Address dst, int32_t imm32);
886 void andq(Register dst, int32_t imm32);
887 void andq(Register dst, Address src);
888 void andq(Register dst, Register src);
890 // Bitwise Logical AND of Packed Double-Precision Floating-Point Values
891 void andpd(XMMRegister dst, XMMRegister src);
893 // Bitwise Logical AND of Packed Single-Precision Floating-Point Values
894 void andps(XMMRegister dst, XMMRegister src);
896 void bsfl(Register dst, Register src);
897 void bsrl(Register dst, Register src);
899 #ifdef _LP64
900 void bsfq(Register dst, Register src);
901 void bsrq(Register dst, Register src);
902 #endif
904 void bswapl(Register reg);
906 void bswapq(Register reg);
908 void call(Label& L, relocInfo::relocType rtype);
909 void call(Register reg); // push pc; pc <- reg
910 void call(Address adr); // push pc; pc <- adr
912 void cdql();
914 void cdqq();
916 void cld() { emit_byte(0xfc); }
918 void clflush(Address adr);
920 void cmovl(Condition cc, Register dst, Register src);
921 void cmovl(Condition cc, Register dst, Address src);
923 void cmovq(Condition cc, Register dst, Register src);
924 void cmovq(Condition cc, Register dst, Address src);
927 void cmpb(Address dst, int imm8);
929 void cmpl(Address dst, int32_t imm32);
931 void cmpl(Register dst, int32_t imm32);
932 void cmpl(Register dst, Register src);
933 void cmpl(Register dst, Address src);
935 void cmpq(Address dst, int32_t imm32);
936 void cmpq(Address dst, Register src);
938 void cmpq(Register dst, int32_t imm32);
939 void cmpq(Register dst, Register src);
940 void cmpq(Register dst, Address src);
942 // these are dummies used to catch attempting to convert NULL to Register
943 void cmpl(Register dst, void* junk); // dummy
944 void cmpq(Register dst, void* junk); // dummy
946 void cmpw(Address dst, int imm16);
948 void cmpxchg8 (Address adr);
950 void cmpxchgl(Register reg, Address adr);
952 void cmpxchgq(Register reg, Address adr);
954 // Ordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
955 void comisd(XMMRegister dst, Address src);
956 void comisd(XMMRegister dst, XMMRegister src);
958 // Ordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
959 void comiss(XMMRegister dst, Address src);
960 void comiss(XMMRegister dst, XMMRegister src);
962 // Identify processor type and features
963 void cpuid() {
964 emit_byte(0x0F);
965 emit_byte(0xA2);
966 }
968 // Convert Scalar Double-Precision Floating-Point Value to Scalar Single-Precision Floating-Point Value
969 void cvtsd2ss(XMMRegister dst, XMMRegister src);
970 void cvtsd2ss(XMMRegister dst, Address src);
972 // Convert Doubleword Integer to Scalar Double-Precision Floating-Point Value
973 void cvtsi2sdl(XMMRegister dst, Register src);
974 void cvtsi2sdl(XMMRegister dst, Address src);
975 void cvtsi2sdq(XMMRegister dst, Register src);
976 void cvtsi2sdq(XMMRegister dst, Address src);
978 // Convert Doubleword Integer to Scalar Single-Precision Floating-Point Value
979 void cvtsi2ssl(XMMRegister dst, Register src);
980 void cvtsi2ssl(XMMRegister dst, Address src);
981 void cvtsi2ssq(XMMRegister dst, Register src);
982 void cvtsi2ssq(XMMRegister dst, Address src);
984 // Convert Packed Signed Doubleword Integers to Packed Double-Precision Floating-Point Value
985 void cvtdq2pd(XMMRegister dst, XMMRegister src);
987 // Convert Packed Signed Doubleword Integers to Packed Single-Precision Floating-Point Value
988 void cvtdq2ps(XMMRegister dst, XMMRegister src);
990 // Convert Scalar Single-Precision Floating-Point Value to Scalar Double-Precision Floating-Point Value
991 void cvtss2sd(XMMRegister dst, XMMRegister src);
992 void cvtss2sd(XMMRegister dst, Address src);
994 // Convert with Truncation Scalar Double-Precision Floating-Point Value to Doubleword Integer
995 void cvttsd2sil(Register dst, Address src);
996 void cvttsd2sil(Register dst, XMMRegister src);
997 void cvttsd2siq(Register dst, XMMRegister src);
999 // Convert with Truncation Scalar Single-Precision Floating-Point Value to Doubleword Integer
1000 void cvttss2sil(Register dst, XMMRegister src);
1001 void cvttss2siq(Register dst, XMMRegister src);
1003 // Divide Scalar Double-Precision Floating-Point Values
1004 void divsd(XMMRegister dst, Address src);
1005 void divsd(XMMRegister dst, XMMRegister src);
1007 // Divide Scalar Single-Precision Floating-Point Values
1008 void divss(XMMRegister dst, Address src);
1009 void divss(XMMRegister dst, XMMRegister src);
1011 void emms();
1013 void fabs();
1015 void fadd(int i);
1017 void fadd_d(Address src);
1018 void fadd_s(Address src);
1020 // "Alternate" versions of x87 instructions place result down in FPU
1021 // stack instead of on TOS
1023 void fadda(int i); // "alternate" fadd
1024 void faddp(int i = 1);
1026 void fchs();
1028 void fcom(int i);
1030 void fcomp(int i = 1);
1031 void fcomp_d(Address src);
1032 void fcomp_s(Address src);
1034 void fcompp();
1036 void fcos();
1038 void fdecstp();
1040 void fdiv(int i);
1041 void fdiv_d(Address src);
1042 void fdivr_s(Address src);
1043 void fdiva(int i); // "alternate" fdiv
1044 void fdivp(int i = 1);
1046 void fdivr(int i);
1047 void fdivr_d(Address src);
1048 void fdiv_s(Address src);
1050 void fdivra(int i); // "alternate" reversed fdiv
1052 void fdivrp(int i = 1);
1054 void ffree(int i = 0);
1056 void fild_d(Address adr);
1057 void fild_s(Address adr);
1059 void fincstp();
1061 void finit();
1063 void fist_s (Address adr);
1064 void fistp_d(Address adr);
1065 void fistp_s(Address adr);
1067 void fld1();
1069 void fld_d(Address adr);
1070 void fld_s(Address adr);
1071 void fld_s(int index);
1072 void fld_x(Address adr); // extended-precision (80-bit) format
1074 void fldcw(Address src);
1076 void fldenv(Address src);
1078 void fldlg2();
1080 void fldln2();
1082 void fldz();
1084 void flog();
1085 void flog10();
1087 void fmul(int i);
1089 void fmul_d(Address src);
1090 void fmul_s(Address src);
1092 void fmula(int i); // "alternate" fmul
1094 void fmulp(int i = 1);
1096 void fnsave(Address dst);
1098 void fnstcw(Address src);
1100 void fnstsw_ax();
1102 void fprem();
1103 void fprem1();
1105 void frstor(Address src);
1107 void fsin();
1109 void fsqrt();
1111 void fst_d(Address adr);
1112 void fst_s(Address adr);
1114 void fstp_d(Address adr);
1115 void fstp_d(int index);
1116 void fstp_s(Address adr);
1117 void fstp_x(Address adr); // extended-precision (80-bit) format
1119 void fsub(int i);
1120 void fsub_d(Address src);
1121 void fsub_s(Address src);
1123 void fsuba(int i); // "alternate" fsub
1125 void fsubp(int i = 1);
1127 void fsubr(int i);
1128 void fsubr_d(Address src);
1129 void fsubr_s(Address src);
1131 void fsubra(int i); // "alternate" reversed fsub
1133 void fsubrp(int i = 1);
1135 void ftan();
1137 void ftst();
1139 void fucomi(int i = 1);
1140 void fucomip(int i = 1);
1142 void fwait();
1144 void fxch(int i = 1);
1146 void fxrstor(Address src);
1148 void fxsave(Address dst);
1150 void fyl2x();
1151 void frndint();
1152 void f2xm1();
1153 void fldl2e();
1155 void hlt();
1157 void idivl(Register src);
1158 void divl(Register src); // Unsigned division
1160 void idivq(Register src);
1162 void imull(Register dst, Register src);
1163 void imull(Register dst, Register src, int value);
1165 void imulq(Register dst, Register src);
1166 void imulq(Register dst, Register src, int value);
1169 // jcc is the generic conditional branch generator to run-
1170 // time routines, jcc is used for branches to labels. jcc
1171 // takes a branch opcode (cc) and a label (L) and generates
1172 // either a backward branch or a forward branch and links it
1173 // to the label fixup chain. Usage:
1174 //
1175 // Label L; // unbound label
1176 // jcc(cc, L); // forward branch to unbound label
1177 // bind(L); // bind label to the current pc
1178 // jcc(cc, L); // backward branch to bound label
1179 // bind(L); // illegal: a label may be bound only once
1180 //
1181 // Note: The same Label can be used for forward and backward branches
1182 // but it may be bound only once.
1184 void jcc(Condition cc, Label& L, bool maybe_short = true);
1186 // Conditional jump to a 8-bit offset to L.
1187 // WARNING: be very careful using this for forward jumps. If the label is
1188 // not bound within an 8-bit offset of this instruction, a run-time error
1189 // will occur.
1190 void jccb(Condition cc, Label& L);
1192 void jmp(Address entry); // pc <- entry
1194 // Label operations & relative jumps (PPUM Appendix D)
1195 void jmp(Label& L, bool maybe_short = true); // unconditional jump to L
1197 void jmp(Register entry); // pc <- entry
1199 // Unconditional 8-bit offset jump to L.
1200 // WARNING: be very careful using this for forward jumps. If the label is
1201 // not bound within an 8-bit offset of this instruction, a run-time error
1202 // will occur.
1203 void jmpb(Label& L);
1205 void ldmxcsr( Address src );
1207 void leal(Register dst, Address src);
1209 void leaq(Register dst, Address src);
1211 void lfence() {
1212 emit_byte(0x0F);
1213 emit_byte(0xAE);
1214 emit_byte(0xE8);
1215 }
1217 void lock();
1219 void lzcntl(Register dst, Register src);
1221 #ifdef _LP64
1222 void lzcntq(Register dst, Register src);
1223 #endif
1225 enum Membar_mask_bits {
1226 StoreStore = 1 << 3,
1227 LoadStore = 1 << 2,
1228 StoreLoad = 1 << 1,
1229 LoadLoad = 1 << 0
1230 };
1232 // Serializes memory and blows flags
1233 void membar(Membar_mask_bits order_constraint) {
1234 if (os::is_MP()) {
1235 // We only have to handle StoreLoad
1236 if (order_constraint & StoreLoad) {
1237 // All usable chips support "locked" instructions which suffice
1238 // as barriers, and are much faster than the alternative of
1239 // using cpuid instruction. We use here a locked add [esp],0.
1240 // This is conveniently otherwise a no-op except for blowing
1241 // flags.
1242 // Any change to this code may need to revisit other places in
1243 // the code where this idiom is used, in particular the
1244 // orderAccess code.
1245 lock();
1246 addl(Address(rsp, 0), 0);// Assert the lock# signal here
1247 }
1248 }
1249 }
1251 void mfence();
1253 // Moves
1255 void mov64(Register dst, int64_t imm64);
1257 void movb(Address dst, Register src);
1258 void movb(Address dst, int imm8);
1259 void movb(Register dst, Address src);
1261 void movdl(XMMRegister dst, Register src);
1262 void movdl(Register dst, XMMRegister src);
1263 void movdl(XMMRegister dst, Address src);
1265 // Move Double Quadword
1266 void movdq(XMMRegister dst, Register src);
1267 void movdq(Register dst, XMMRegister src);
1269 // Move Aligned Double Quadword
1270 void movdqa(XMMRegister dst, XMMRegister src);
1272 // Move Unaligned Double Quadword
1273 void movdqu(Address dst, XMMRegister src);
1274 void movdqu(XMMRegister dst, Address src);
1275 void movdqu(XMMRegister dst, XMMRegister src);
1277 void movl(Register dst, int32_t imm32);
1278 void movl(Address dst, int32_t imm32);
1279 void movl(Register dst, Register src);
1280 void movl(Register dst, Address src);
1281 void movl(Address dst, Register src);
1283 // These dummies prevent using movl from converting a zero (like NULL) into Register
1284 // by giving the compiler two choices it can't resolve
1286 void movl(Address dst, void* junk);
1287 void movl(Register dst, void* junk);
1289 #ifdef _LP64
1290 void movq(Register dst, Register src);
1291 void movq(Register dst, Address src);
1292 void movq(Address dst, Register src);
1293 #endif
1295 void movq(Address dst, MMXRegister src );
1296 void movq(MMXRegister dst, Address src );
1298 #ifdef _LP64
1299 // These dummies prevent using movq from converting a zero (like NULL) into Register
1300 // by giving the compiler two choices it can't resolve
1302 void movq(Address dst, void* dummy);
1303 void movq(Register dst, void* dummy);
1304 #endif
1306 // Move Quadword
1307 void movq(Address dst, XMMRegister src);
1308 void movq(XMMRegister dst, Address src);
1310 void movsbl(Register dst, Address src);
1311 void movsbl(Register dst, Register src);
1313 #ifdef _LP64
1314 void movsbq(Register dst, Address src);
1315 void movsbq(Register dst, Register src);
1317 // Move signed 32bit immediate to 64bit extending sign
1318 void movslq(Address dst, int32_t imm64);
1319 void movslq(Register dst, int32_t imm64);
1321 void movslq(Register dst, Address src);
1322 void movslq(Register dst, Register src);
1323 void movslq(Register dst, void* src); // Dummy declaration to cause NULL to be ambiguous
1324 #endif
1326 void movswl(Register dst, Address src);
1327 void movswl(Register dst, Register src);
1329 #ifdef _LP64
1330 void movswq(Register dst, Address src);
1331 void movswq(Register dst, Register src);
1332 #endif
1334 void movw(Address dst, int imm16);
1335 void movw(Register dst, Address src);
1336 void movw(Address dst, Register src);
1338 void movzbl(Register dst, Address src);
1339 void movzbl(Register dst, Register src);
1341 #ifdef _LP64
1342 void movzbq(Register dst, Address src);
1343 void movzbq(Register dst, Register src);
1344 #endif
1346 void movzwl(Register dst, Address src);
1347 void movzwl(Register dst, Register src);
1349 #ifdef _LP64
1350 void movzwq(Register dst, Address src);
1351 void movzwq(Register dst, Register src);
1352 #endif
1354 void mull(Address src);
1355 void mull(Register src);
1357 // Multiply Scalar Double-Precision Floating-Point Values
1358 void mulsd(XMMRegister dst, Address src);
1359 void mulsd(XMMRegister dst, XMMRegister src);
1361 // Multiply Scalar Single-Precision Floating-Point Values
1362 void mulss(XMMRegister dst, Address src);
1363 void mulss(XMMRegister dst, XMMRegister src);
1365 void negl(Register dst);
1367 #ifdef _LP64
1368 void negq(Register dst);
1369 #endif
1371 void nop(int i = 1);
1373 void notl(Register dst);
1375 #ifdef _LP64
1376 void notq(Register dst);
1377 #endif
1379 void orl(Address dst, int32_t imm32);
1380 void orl(Register dst, int32_t imm32);
1381 void orl(Register dst, Address src);
1382 void orl(Register dst, Register src);
1384 void orq(Address dst, int32_t imm32);
1385 void orq(Register dst, int32_t imm32);
1386 void orq(Register dst, Address src);
1387 void orq(Register dst, Register src);
1389 // Pack with unsigned saturation
1390 void packuswb(XMMRegister dst, XMMRegister src);
1391 void packuswb(XMMRegister dst, Address src);
1393 // SSE4.2 string instructions
1394 void pcmpestri(XMMRegister xmm1, XMMRegister xmm2, int imm8);
1395 void pcmpestri(XMMRegister xmm1, Address src, int imm8);
1397 // SSE4.1 packed move
1398 void pmovzxbw(XMMRegister dst, XMMRegister src);
1399 void pmovzxbw(XMMRegister dst, Address src);
1401 #ifndef _LP64 // no 32bit push/pop on amd64
1402 void popl(Address dst);
1403 #endif
1405 #ifdef _LP64
1406 void popq(Address dst);
1407 #endif
1409 void popcntl(Register dst, Address src);
1410 void popcntl(Register dst, Register src);
1412 #ifdef _LP64
1413 void popcntq(Register dst, Address src);
1414 void popcntq(Register dst, Register src);
1415 #endif
1417 // Prefetches (SSE, SSE2, 3DNOW only)
1419 void prefetchnta(Address src);
1420 void prefetchr(Address src);
1421 void prefetcht0(Address src);
1422 void prefetcht1(Address src);
1423 void prefetcht2(Address src);
1424 void prefetchw(Address src);
1426 // POR - Bitwise logical OR
1427 void por(XMMRegister dst, XMMRegister src);
1428 void por(XMMRegister dst, Address src);
1430 // Shuffle Packed Doublewords
1431 void pshufd(XMMRegister dst, XMMRegister src, int mode);
1432 void pshufd(XMMRegister dst, Address src, int mode);
1434 // Shuffle Packed Low Words
1435 void pshuflw(XMMRegister dst, XMMRegister src, int mode);
1436 void pshuflw(XMMRegister dst, Address src, int mode);
1438 // Shift Right by bits Logical Quadword Immediate
1439 void psrlq(XMMRegister dst, int shift);
1441 // Shift Right by bytes Logical DoubleQuadword Immediate
1442 void psrldq(XMMRegister dst, int shift);
1444 // Logical Compare Double Quadword
1445 void ptest(XMMRegister dst, XMMRegister src);
1446 void ptest(XMMRegister dst, Address src);
1448 // Interleave Low Bytes
1449 void punpcklbw(XMMRegister dst, XMMRegister src);
1450 void punpcklbw(XMMRegister dst, Address src);
1452 // Interleave Low Doublewords
1453 void punpckldq(XMMRegister dst, XMMRegister src);
1454 void punpckldq(XMMRegister dst, Address src);
1456 #ifndef _LP64 // no 32bit push/pop on amd64
1457 void pushl(Address src);
1458 #endif
1460 void pushq(Address src);
1462 // Xor Packed Byte Integer Values
1463 void pxor(XMMRegister dst, Address src);
1464 void pxor(XMMRegister dst, XMMRegister src);
1466 void rcll(Register dst, int imm8);
1468 void rclq(Register dst, int imm8);
1470 void ret(int imm16);
1472 void sahf();
1474 void sarl(Register dst, int imm8);
1475 void sarl(Register dst);
1477 void sarq(Register dst, int imm8);
1478 void sarq(Register dst);
1480 void sbbl(Address dst, int32_t imm32);
1481 void sbbl(Register dst, int32_t imm32);
1482 void sbbl(Register dst, Address src);
1483 void sbbl(Register dst, Register src);
1485 void sbbq(Address dst, int32_t imm32);
1486 void sbbq(Register dst, int32_t imm32);
1487 void sbbq(Register dst, Address src);
1488 void sbbq(Register dst, Register src);
1490 void setb(Condition cc, Register dst);
1492 void shldl(Register dst, Register src);
1494 void shll(Register dst, int imm8);
1495 void shll(Register dst);
1497 void shlq(Register dst, int imm8);
1498 void shlq(Register dst);
1500 void shrdl(Register dst, Register src);
1502 void shrl(Register dst, int imm8);
1503 void shrl(Register dst);
1505 void shrq(Register dst, int imm8);
1506 void shrq(Register dst);
1508 void smovl(); // QQQ generic?
1510 // Compute Square Root of Scalar Double-Precision Floating-Point Value
1511 void sqrtsd(XMMRegister dst, Address src);
1512 void sqrtsd(XMMRegister dst, XMMRegister src);
1514 // Compute Square Root of Scalar Single-Precision Floating-Point Value
1515 void sqrtss(XMMRegister dst, Address src);
1516 void sqrtss(XMMRegister dst, XMMRegister src);
1518 void std() { emit_byte(0xfd); }
1520 void stmxcsr( Address dst );
1522 void subl(Address dst, int32_t imm32);
1523 void subl(Address dst, Register src);
1524 void subl(Register dst, int32_t imm32);
1525 void subl(Register dst, Address src);
1526 void subl(Register dst, Register src);
1528 void subq(Address dst, int32_t imm32);
1529 void subq(Address dst, Register src);
1530 void subq(Register dst, int32_t imm32);
1531 void subq(Register dst, Address src);
1532 void subq(Register dst, Register src);
1534 // Force generation of a 4 byte immediate value even if it fits into 8bit
1535 void subl_imm32(Register dst, int32_t imm32);
1536 void subq_imm32(Register dst, int32_t imm32);
1538 // Subtract Scalar Double-Precision Floating-Point Values
1539 void subsd(XMMRegister dst, Address src);
1540 void subsd(XMMRegister dst, XMMRegister src);
1542 // Subtract Scalar Single-Precision Floating-Point Values
1543 void subss(XMMRegister dst, Address src);
1544 void subss(XMMRegister dst, XMMRegister src);
1546 void testb(Register dst, int imm8);
1548 void testl(Register dst, int32_t imm32);
1549 void testl(Register dst, Register src);
1550 void testl(Register dst, Address src);
1552 void testq(Register dst, int32_t imm32);
1553 void testq(Register dst, Register src);
1556 // Unordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
1557 void ucomisd(XMMRegister dst, Address src);
1558 void ucomisd(XMMRegister dst, XMMRegister src);
1560 // Unordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
1561 void ucomiss(XMMRegister dst, Address src);
1562 void ucomiss(XMMRegister dst, XMMRegister src);
1564 void xaddl(Address dst, Register src);
1566 void xaddq(Address dst, Register src);
1568 void xchgl(Register reg, Address adr);
1569 void xchgl(Register dst, Register src);
1571 void xchgq(Register reg, Address adr);
1572 void xchgq(Register dst, Register src);
1574 // Get Value of Extended Control Register
1575 void xgetbv() {
1576 emit_byte(0x0F);
1577 emit_byte(0x01);
1578 emit_byte(0xD0);
1579 }
1581 void xorl(Register dst, int32_t imm32);
1582 void xorl(Register dst, Address src);
1583 void xorl(Register dst, Register src);
1585 void xorq(Register dst, Address src);
1586 void xorq(Register dst, Register src);
1588 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
1589 void xorpd(XMMRegister dst, XMMRegister src);
1591 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
1592 void xorps(XMMRegister dst, XMMRegister src);
1594 void set_byte_if_not_zero(Register dst); // sets reg to 1 if not zero, otherwise 0
1596 // AVX 3-operands instructions (encoded with VEX prefix)
1597 void vaddsd(XMMRegister dst, XMMRegister nds, Address src);
1598 void vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src);
1599 void vaddss(XMMRegister dst, XMMRegister nds, Address src);
1600 void vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src);
1601 void vandpd(XMMRegister dst, XMMRegister nds, Address src);
1602 void vandps(XMMRegister dst, XMMRegister nds, Address src);
1603 void vdivsd(XMMRegister dst, XMMRegister nds, Address src);
1604 void vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src);
1605 void vdivss(XMMRegister dst, XMMRegister nds, Address src);
1606 void vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src);
1607 void vmulsd(XMMRegister dst, XMMRegister nds, Address src);
1608 void vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src);
1609 void vmulss(XMMRegister dst, XMMRegister nds, Address src);
1610 void vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src);
1611 void vsubsd(XMMRegister dst, XMMRegister nds, Address src);
1612 void vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src);
1613 void vsubss(XMMRegister dst, XMMRegister nds, Address src);
1614 void vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src);
1615 void vxorpd(XMMRegister dst, XMMRegister nds, Address src);
1616 void vxorps(XMMRegister dst, XMMRegister nds, Address src);
1619 protected:
1620 // Next instructions require address alignment 16 bytes SSE mode.
1621 // They should be called only from corresponding MacroAssembler instructions.
1622 void andpd(XMMRegister dst, Address src);
1623 void andps(XMMRegister dst, Address src);
1624 void xorpd(XMMRegister dst, Address src);
1625 void xorps(XMMRegister dst, Address src);
1627 };
1630 // MacroAssembler extends Assembler by frequently used macros.
1631 //
1632 // Instructions for which a 'better' code sequence exists depending
1633 // on arguments should also go in here.
1635 class MacroAssembler: public Assembler {
1636 friend class LIR_Assembler;
1637 friend class Runtime1; // as_Address()
1639 protected:
1641 Address as_Address(AddressLiteral adr);
1642 Address as_Address(ArrayAddress adr);
1644 // Support for VM calls
1645 //
1646 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
1647 // may customize this version by overriding it for its purposes (e.g., to save/restore
1648 // additional registers when doing a VM call).
1649 #ifdef CC_INTERP
1650 // c++ interpreter never wants to use interp_masm version of call_VM
1651 #define VIRTUAL
1652 #else
1653 #define VIRTUAL virtual
1654 #endif
1656 VIRTUAL void call_VM_leaf_base(
1657 address entry_point, // the entry point
1658 int number_of_arguments // the number of arguments to pop after the call
1659 );
1661 // This is the base routine called by the different versions of call_VM. The interpreter
1662 // may customize this version by overriding it for its purposes (e.g., to save/restore
1663 // additional registers when doing a VM call).
1664 //
1665 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base
1666 // returns the register which contains the thread upon return. If a thread register has been
1667 // specified, the return value will correspond to that register. If no last_java_sp is specified
1668 // (noreg) than rsp will be used instead.
1669 VIRTUAL void call_VM_base( // returns the register containing the thread upon return
1670 Register oop_result, // where an oop-result ends up if any; use noreg otherwise
1671 Register java_thread, // the thread if computed before ; use noreg otherwise
1672 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise
1673 address entry_point, // the entry point
1674 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call
1675 bool check_exceptions // whether to check for pending exceptions after return
1676 );
1678 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
1679 // The implementation is only non-empty for the InterpreterMacroAssembler,
1680 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
1681 virtual void check_and_handle_popframe(Register java_thread);
1682 virtual void check_and_handle_earlyret(Register java_thread);
1684 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
1686 // helpers for FPU flag access
1687 // tmp is a temporary register, if none is available use noreg
1688 void save_rax (Register tmp);
1689 void restore_rax(Register tmp);
1691 public:
1692 MacroAssembler(CodeBuffer* code) : Assembler(code) {}
1694 // Support for NULL-checks
1695 //
1696 // Generates code that causes a NULL OS exception if the content of reg is NULL.
1697 // If the accessed location is M[reg + offset] and the offset is known, provide the
1698 // offset. No explicit code generation is needed if the offset is within a certain
1699 // range (0 <= offset <= page_size).
1701 void null_check(Register reg, int offset = -1);
1702 static bool needs_explicit_null_check(intptr_t offset);
1704 // Required platform-specific helpers for Label::patch_instructions.
1705 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
1706 void pd_patch_instruction(address branch, address target);
1707 #ifndef PRODUCT
1708 static void pd_print_patched_instruction(address branch);
1709 #endif
1711 // The following 4 methods return the offset of the appropriate move instruction
1713 // Support for fast byte/short loading with zero extension (depending on particular CPU)
1714 int load_unsigned_byte(Register dst, Address src);
1715 int load_unsigned_short(Register dst, Address src);
1717 // Support for fast byte/short loading with sign extension (depending on particular CPU)
1718 int load_signed_byte(Register dst, Address src);
1719 int load_signed_short(Register dst, Address src);
1721 // Support for sign-extension (hi:lo = extend_sign(lo))
1722 void extend_sign(Register hi, Register lo);
1724 // Load and store values by size and signed-ness
1725 void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg);
1726 void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg);
1728 // Support for inc/dec with optimal instruction selection depending on value
1730 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
1731 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
1733 void decrementl(Address dst, int value = 1);
1734 void decrementl(Register reg, int value = 1);
1736 void decrementq(Register reg, int value = 1);
1737 void decrementq(Address dst, int value = 1);
1739 void incrementl(Address dst, int value = 1);
1740 void incrementl(Register reg, int value = 1);
1742 void incrementq(Register reg, int value = 1);
1743 void incrementq(Address dst, int value = 1);
1746 // Support optimal SSE move instructions.
1747 void movflt(XMMRegister dst, XMMRegister src) {
1748 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; }
1749 else { movss (dst, src); return; }
1750 }
1751 void movflt(XMMRegister dst, Address src) { movss(dst, src); }
1752 void movflt(XMMRegister dst, AddressLiteral src);
1753 void movflt(Address dst, XMMRegister src) { movss(dst, src); }
1755 void movdbl(XMMRegister dst, XMMRegister src) {
1756 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; }
1757 else { movsd (dst, src); return; }
1758 }
1760 void movdbl(XMMRegister dst, AddressLiteral src);
1762 void movdbl(XMMRegister dst, Address src) {
1763 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; }
1764 else { movlpd(dst, src); return; }
1765 }
1766 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); }
1768 void incrementl(AddressLiteral dst);
1769 void incrementl(ArrayAddress dst);
1771 // Alignment
1772 void align(int modulus);
1774 // A 5 byte nop that is safe for patching (see patch_verified_entry)
1775 void fat_nop();
1777 // Stack frame creation/removal
1778 void enter();
1779 void leave();
1781 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
1782 // The pointer will be loaded into the thread register.
1783 void get_thread(Register thread);
1786 // Support for VM calls
1787 //
1788 // It is imperative that all calls into the VM are handled via the call_VM macros.
1789 // They make sure that the stack linkage is setup correctly. call_VM's correspond
1790 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
1793 void call_VM(Register oop_result,
1794 address entry_point,
1795 bool check_exceptions = true);
1796 void call_VM(Register oop_result,
1797 address entry_point,
1798 Register arg_1,
1799 bool check_exceptions = true);
1800 void call_VM(Register oop_result,
1801 address entry_point,
1802 Register arg_1, Register arg_2,
1803 bool check_exceptions = true);
1804 void call_VM(Register oop_result,
1805 address entry_point,
1806 Register arg_1, Register arg_2, Register arg_3,
1807 bool check_exceptions = true);
1809 // Overloadings with last_Java_sp
1810 void call_VM(Register oop_result,
1811 Register last_java_sp,
1812 address entry_point,
1813 int number_of_arguments = 0,
1814 bool check_exceptions = true);
1815 void call_VM(Register oop_result,
1816 Register last_java_sp,
1817 address entry_point,
1818 Register arg_1, bool
1819 check_exceptions = true);
1820 void call_VM(Register oop_result,
1821 Register last_java_sp,
1822 address entry_point,
1823 Register arg_1, Register arg_2,
1824 bool check_exceptions = true);
1825 void call_VM(Register oop_result,
1826 Register last_java_sp,
1827 address entry_point,
1828 Register arg_1, Register arg_2, Register arg_3,
1829 bool check_exceptions = true);
1831 // These always tightly bind to MacroAssembler::call_VM_base
1832 // bypassing the virtual implementation
1833 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, int number_of_arguments = 0, bool check_exceptions = true);
1834 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true);
1835 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
1836 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true);
1837 void super_call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4, bool check_exceptions = true);
1839 void call_VM_leaf(address entry_point,
1840 int number_of_arguments = 0);
1841 void call_VM_leaf(address entry_point,
1842 Register arg_1);
1843 void call_VM_leaf(address entry_point,
1844 Register arg_1, Register arg_2);
1845 void call_VM_leaf(address entry_point,
1846 Register arg_1, Register arg_2, Register arg_3);
1848 // These always tightly bind to MacroAssembler::call_VM_leaf_base
1849 // bypassing the virtual implementation
1850 void super_call_VM_leaf(address entry_point);
1851 void super_call_VM_leaf(address entry_point, Register arg_1);
1852 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
1853 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
1854 void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3, Register arg_4);
1856 // last Java Frame (fills frame anchor)
1857 void set_last_Java_frame(Register thread,
1858 Register last_java_sp,
1859 Register last_java_fp,
1860 address last_java_pc);
1862 // thread in the default location (r15_thread on 64bit)
1863 void set_last_Java_frame(Register last_java_sp,
1864 Register last_java_fp,
1865 address last_java_pc);
1867 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc);
1869 // thread in the default location (r15_thread on 64bit)
1870 void reset_last_Java_frame(bool clear_fp, bool clear_pc);
1872 // Stores
1873 void store_check(Register obj); // store check for obj - register is destroyed afterwards
1874 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed)
1876 #ifndef SERIALGC
1878 void g1_write_barrier_pre(Register obj,
1879 Register pre_val,
1880 Register thread,
1881 Register tmp,
1882 bool tosca_live,
1883 bool expand_call);
1885 void g1_write_barrier_post(Register store_addr,
1886 Register new_val,
1887 Register thread,
1888 Register tmp,
1889 Register tmp2);
1891 #endif // SERIALGC
1893 // split store_check(Register obj) to enhance instruction interleaving
1894 void store_check_part_1(Register obj);
1895 void store_check_part_2(Register obj);
1897 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
1898 void c2bool(Register x);
1900 // C++ bool manipulation
1902 void movbool(Register dst, Address src);
1903 void movbool(Address dst, bool boolconst);
1904 void movbool(Address dst, Register src);
1905 void testbool(Register dst);
1907 // oop manipulations
1908 void load_klass(Register dst, Register src);
1909 void store_klass(Register dst, Register src);
1911 void load_heap_oop(Register dst, Address src);
1912 void load_heap_oop_not_null(Register dst, Address src);
1913 void store_heap_oop(Address dst, Register src);
1915 // Used for storing NULL. All other oop constants should be
1916 // stored using routines that take a jobject.
1917 void store_heap_oop_null(Address dst);
1919 void load_prototype_header(Register dst, Register src);
1921 #ifdef _LP64
1922 void store_klass_gap(Register dst, Register src);
1924 // This dummy is to prevent a call to store_heap_oop from
1925 // converting a zero (like NULL) into a Register by giving
1926 // the compiler two choices it can't resolve
1928 void store_heap_oop(Address dst, void* dummy);
1930 void encode_heap_oop(Register r);
1931 void decode_heap_oop(Register r);
1932 void encode_heap_oop_not_null(Register r);
1933 void decode_heap_oop_not_null(Register r);
1934 void encode_heap_oop_not_null(Register dst, Register src);
1935 void decode_heap_oop_not_null(Register dst, Register src);
1937 void set_narrow_oop(Register dst, jobject obj);
1938 void set_narrow_oop(Address dst, jobject obj);
1939 void cmp_narrow_oop(Register dst, jobject obj);
1940 void cmp_narrow_oop(Address dst, jobject obj);
1942 // if heap base register is used - reinit it with the correct value
1943 void reinit_heapbase();
1945 DEBUG_ONLY(void verify_heapbase(const char* msg);)
1947 #endif // _LP64
1949 // Int division/remainder for Java
1950 // (as idivl, but checks for special case as described in JVM spec.)
1951 // returns idivl instruction offset for implicit exception handling
1952 int corrected_idivl(Register reg);
1954 // Long division/remainder for Java
1955 // (as idivq, but checks for special case as described in JVM spec.)
1956 // returns idivq instruction offset for implicit exception handling
1957 int corrected_idivq(Register reg);
1959 void int3();
1961 // Long operation macros for a 32bit cpu
1962 // Long negation for Java
1963 void lneg(Register hi, Register lo);
1965 // Long multiplication for Java
1966 // (destroys contents of eax, ebx, ecx and edx)
1967 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y
1969 // Long shifts for Java
1970 // (semantics as described in JVM spec.)
1971 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f)
1972 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f)
1974 // Long compare for Java
1975 // (semantics as described in JVM spec.)
1976 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y)
1979 // misc
1981 // Sign extension
1982 void sign_extend_short(Register reg);
1983 void sign_extend_byte(Register reg);
1985 // Division by power of 2, rounding towards 0
1986 void division_with_shift(Register reg, int shift_value);
1988 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows:
1989 //
1990 // CF (corresponds to C0) if x < y
1991 // PF (corresponds to C2) if unordered
1992 // ZF (corresponds to C3) if x = y
1993 //
1994 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
1995 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code)
1996 void fcmp(Register tmp);
1997 // Variant of the above which allows y to be further down the stack
1998 // and which only pops x and y if specified. If pop_right is
1999 // specified then pop_left must also be specified.
2000 void fcmp(Register tmp, int index, bool pop_left, bool pop_right);
2002 // Floating-point comparison for Java
2003 // Compares the top-most stack entries on the FPU stack and stores the result in dst.
2004 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
2005 // (semantics as described in JVM spec.)
2006 void fcmp2int(Register dst, bool unordered_is_less);
2007 // Variant of the above which allows y to be further down the stack
2008 // and which only pops x and y if specified. If pop_right is
2009 // specified then pop_left must also be specified.
2010 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right);
2012 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards)
2013 // tmp is a temporary register, if none is available use noreg
2014 void fremr(Register tmp);
2017 // same as fcmp2int, but using SSE2
2018 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
2019 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
2021 // Inlined sin/cos generator for Java; must not use CPU instruction
2022 // directly on Intel as it does not have high enough precision
2023 // outside of the range [-pi/4, pi/4]. Extra argument indicate the
2024 // number of FPU stack slots in use; all but the topmost will
2025 // require saving if a slow case is necessary. Assumes argument is
2026 // on FP TOS; result is on FP TOS. No cpu registers are changed by
2027 // this code.
2028 void trigfunc(char trig, int num_fpu_regs_in_use = 1);
2030 // branch to L if FPU flag C2 is set/not set
2031 // tmp is a temporary register, if none is available use noreg
2032 void jC2 (Register tmp, Label& L);
2033 void jnC2(Register tmp, Label& L);
2035 // Pop ST (ffree & fincstp combined)
2036 void fpop();
2038 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack
2039 void push_fTOS();
2041 // pops double TOS element from CPU stack and pushes on FPU stack
2042 void pop_fTOS();
2044 void empty_FPU_stack();
2046 void push_IU_state();
2047 void pop_IU_state();
2049 void push_FPU_state();
2050 void pop_FPU_state();
2052 void push_CPU_state();
2053 void pop_CPU_state();
2055 // Round up to a power of two
2056 void round_to(Register reg, int modulus);
2058 // Callee saved registers handling
2059 void push_callee_saved_registers();
2060 void pop_callee_saved_registers();
2062 // allocation
2063 void eden_allocate(
2064 Register obj, // result: pointer to object after successful allocation
2065 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
2066 int con_size_in_bytes, // object size in bytes if known at compile time
2067 Register t1, // temp register
2068 Label& slow_case // continuation point if fast allocation fails
2069 );
2070 void tlab_allocate(
2071 Register obj, // result: pointer to object after successful allocation
2072 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
2073 int con_size_in_bytes, // object size in bytes if known at compile time
2074 Register t1, // temp register
2075 Register t2, // temp register
2076 Label& slow_case // continuation point if fast allocation fails
2077 );
2078 Register tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); // returns TLS address
2079 void incr_allocated_bytes(Register thread,
2080 Register var_size_in_bytes, int con_size_in_bytes,
2081 Register t1 = noreg);
2083 // interface method calling
2084 void lookup_interface_method(Register recv_klass,
2085 Register intf_klass,
2086 RegisterOrConstant itable_index,
2087 Register method_result,
2088 Register scan_temp,
2089 Label& no_such_interface);
2091 // Test sub_klass against super_klass, with fast and slow paths.
2093 // The fast path produces a tri-state answer: yes / no / maybe-slow.
2094 // One of the three labels can be NULL, meaning take the fall-through.
2095 // If super_check_offset is -1, the value is loaded up from super_klass.
2096 // No registers are killed, except temp_reg.
2097 void check_klass_subtype_fast_path(Register sub_klass,
2098 Register super_klass,
2099 Register temp_reg,
2100 Label* L_success,
2101 Label* L_failure,
2102 Label* L_slow_path,
2103 RegisterOrConstant super_check_offset = RegisterOrConstant(-1));
2105 // The rest of the type check; must be wired to a corresponding fast path.
2106 // It does not repeat the fast path logic, so don't use it standalone.
2107 // The temp_reg and temp2_reg can be noreg, if no temps are available.
2108 // Updates the sub's secondary super cache as necessary.
2109 // If set_cond_codes, condition codes will be Z on success, NZ on failure.
2110 void check_klass_subtype_slow_path(Register sub_klass,
2111 Register super_klass,
2112 Register temp_reg,
2113 Register temp2_reg,
2114 Label* L_success,
2115 Label* L_failure,
2116 bool set_cond_codes = false);
2118 // Simplified, combined version, good for typical uses.
2119 // Falls through on failure.
2120 void check_klass_subtype(Register sub_klass,
2121 Register super_klass,
2122 Register temp_reg,
2123 Label& L_success);
2125 // method handles (JSR 292)
2126 void check_method_handle_type(Register mtype_reg, Register mh_reg,
2127 Register temp_reg,
2128 Label& wrong_method_type);
2129 void load_method_handle_vmslots(Register vmslots_reg, Register mh_reg,
2130 Register temp_reg);
2131 void jump_to_method_handle_entry(Register mh_reg, Register temp_reg);
2132 Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0);
2135 //----
2136 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0
2138 // Debugging
2140 // only if +VerifyOops
2141 void verify_oop(Register reg, const char* s = "broken oop");
2142 void verify_oop_addr(Address addr, const char * s = "broken oop addr");
2144 // only if +VerifyFPU
2145 void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
2147 // prints msg, dumps registers and stops execution
2148 void stop(const char* msg);
2150 // prints msg and continues
2151 void warn(const char* msg);
2153 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg);
2154 static void debug64(char* msg, int64_t pc, int64_t regs[]);
2156 void os_breakpoint();
2158 void untested() { stop("untested"); }
2160 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, 1024, "unimplemented: %s", what); stop(b); }
2162 void should_not_reach_here() { stop("should not reach here"); }
2164 void print_CPU_state();
2166 // Stack overflow checking
2167 void bang_stack_with_offset(int offset) {
2168 // stack grows down, caller passes positive offset
2169 assert(offset > 0, "must bang with negative offset");
2170 movl(Address(rsp, (-offset)), rax);
2171 }
2173 // Writes to stack successive pages until offset reached to check for
2174 // stack overflow + shadow pages. Also, clobbers tmp
2175 void bang_stack_size(Register size, Register tmp);
2177 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
2178 Register tmp,
2179 int offset);
2181 // Support for serializing memory accesses between threads
2182 void serialize_memory(Register thread, Register tmp);
2184 void verify_tlab();
2186 // Biased locking support
2187 // lock_reg and obj_reg must be loaded up with the appropriate values.
2188 // swap_reg must be rax, and is killed.
2189 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
2190 // be killed; if not supplied, push/pop will be used internally to
2191 // allocate a temporary (inefficient, avoid if possible).
2192 // Optional slow case is for implementations (interpreter and C1) which branch to
2193 // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
2194 // Returns offset of first potentially-faulting instruction for null
2195 // check info (currently consumed only by C1). If
2196 // swap_reg_contains_mark is true then returns -1 as it is assumed
2197 // the calling code has already passed any potential faults.
2198 int biased_locking_enter(Register lock_reg, Register obj_reg,
2199 Register swap_reg, Register tmp_reg,
2200 bool swap_reg_contains_mark,
2201 Label& done, Label* slow_case = NULL,
2202 BiasedLockingCounters* counters = NULL);
2203 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
2206 Condition negate_condition(Condition cond);
2208 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit
2209 // operands. In general the names are modified to avoid hiding the instruction in Assembler
2210 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
2211 // here in MacroAssembler. The major exception to this rule is call
2213 // Arithmetics
2216 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; }
2217 void addptr(Address dst, Register src);
2219 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); }
2220 void addptr(Register dst, int32_t src);
2221 void addptr(Register dst, Register src);
2222 void addptr(Register dst, RegisterOrConstant src) {
2223 if (src.is_constant()) addptr(dst, (int) src.as_constant());
2224 else addptr(dst, src.as_register());
2225 }
2227 void andptr(Register dst, int32_t src);
2228 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; }
2230 void cmp8(AddressLiteral src1, int imm);
2232 // renamed to drag out the casting of address to int32_t/intptr_t
2233 void cmp32(Register src1, int32_t imm);
2235 void cmp32(AddressLiteral src1, int32_t imm);
2236 // compare reg - mem, or reg - &mem
2237 void cmp32(Register src1, AddressLiteral src2);
2239 void cmp32(Register src1, Address src2);
2241 #ifndef _LP64
2242 void cmpoop(Address dst, jobject obj);
2243 void cmpoop(Register dst, jobject obj);
2244 #endif // _LP64
2246 // NOTE src2 must be the lval. This is NOT an mem-mem compare
2247 void cmpptr(Address src1, AddressLiteral src2);
2249 void cmpptr(Register src1, AddressLiteral src2);
2251 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2252 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2253 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2255 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2256 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
2258 // cmp64 to avoild hiding cmpq
2259 void cmp64(Register src1, AddressLiteral src);
2261 void cmpxchgptr(Register reg, Address adr);
2263 void locked_cmpxchgptr(Register reg, AddressLiteral adr);
2266 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); }
2269 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); }
2271 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); }
2273 void shlptr(Register dst, int32_t shift);
2274 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); }
2276 void shrptr(Register dst, int32_t shift);
2277 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); }
2279 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); }
2280 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); }
2282 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
2284 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
2285 void subptr(Register dst, int32_t src);
2286 // Force generation of a 4 byte immediate value even if it fits into 8bit
2287 void subptr_imm32(Register dst, int32_t src);
2288 void subptr(Register dst, Register src);
2289 void subptr(Register dst, RegisterOrConstant src) {
2290 if (src.is_constant()) subptr(dst, (int) src.as_constant());
2291 else subptr(dst, src.as_register());
2292 }
2294 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
2295 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
2297 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
2298 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
2300 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; }
2304 // Helper functions for statistics gathering.
2305 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes.
2306 void cond_inc32(Condition cond, AddressLiteral counter_addr);
2307 // Unconditional atomic increment.
2308 void atomic_incl(AddressLiteral counter_addr);
2310 void lea(Register dst, AddressLiteral adr);
2311 void lea(Address dst, AddressLiteral adr);
2312 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); }
2314 void leal32(Register dst, Address src) { leal(dst, src); }
2316 // Import other testl() methods from the parent class or else
2317 // they will be hidden by the following overriding declaration.
2318 using Assembler::testl;
2319 void testl(Register dst, AddressLiteral src);
2321 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2322 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2323 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
2325 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); }
2326 void testptr(Register src1, Register src2);
2328 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
2329 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
2331 // Calls
2333 void call(Label& L, relocInfo::relocType rtype);
2334 void call(Register entry);
2336 // NOTE: this call tranfers to the effective address of entry NOT
2337 // the address contained by entry. This is because this is more natural
2338 // for jumps/calls.
2339 void call(AddressLiteral entry);
2341 // Jumps
2343 // NOTE: these jumps tranfer to the effective address of dst NOT
2344 // the address contained by dst. This is because this is more natural
2345 // for jumps/calls.
2346 void jump(AddressLiteral dst);
2347 void jump_cc(Condition cc, AddressLiteral dst);
2349 // 32bit can do a case table jump in one instruction but we no longer allow the base
2350 // to be installed in the Address class. This jump will tranfers to the address
2351 // contained in the location described by entry (not the address of entry)
2352 void jump(ArrayAddress entry);
2354 // Floating
2356 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); }
2357 void andpd(XMMRegister dst, AddressLiteral src);
2359 void andps(XMMRegister dst, XMMRegister src) { Assembler::andps(dst, src); }
2360 void andps(XMMRegister dst, Address src) { Assembler::andps(dst, src); }
2361 void andps(XMMRegister dst, AddressLiteral src);
2363 void comiss(XMMRegister dst, XMMRegister src) { Assembler::comiss(dst, src); }
2364 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); }
2365 void comiss(XMMRegister dst, AddressLiteral src);
2367 void comisd(XMMRegister dst, XMMRegister src) { Assembler::comisd(dst, src); }
2368 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); }
2369 void comisd(XMMRegister dst, AddressLiteral src);
2371 void fadd_s(Address src) { Assembler::fadd_s(src); }
2372 void fadd_s(AddressLiteral src) { Assembler::fadd_s(as_Address(src)); }
2374 void fldcw(Address src) { Assembler::fldcw(src); }
2375 void fldcw(AddressLiteral src);
2377 void fld_s(int index) { Assembler::fld_s(index); }
2378 void fld_s(Address src) { Assembler::fld_s(src); }
2379 void fld_s(AddressLiteral src);
2381 void fld_d(Address src) { Assembler::fld_d(src); }
2382 void fld_d(AddressLiteral src);
2384 void fld_x(Address src) { Assembler::fld_x(src); }
2385 void fld_x(AddressLiteral src);
2387 void fmul_s(Address src) { Assembler::fmul_s(src); }
2388 void fmul_s(AddressLiteral src) { Assembler::fmul_s(as_Address(src)); }
2390 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); }
2391 void ldmxcsr(AddressLiteral src);
2393 // compute pow(x,y) and exp(x) with x86 instructions. Don't cover
2394 // all corner cases and may result in NaN and require fallback to a
2395 // runtime call.
2396 void fast_pow();
2397 void fast_exp();
2398 void increase_precision();
2399 void restore_precision();
2401 // computes exp(x). Fallback to runtime call included.
2402 void exp_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(true, num_fpu_regs_in_use); }
2403 // computes pow(x,y). Fallback to runtime call included.
2404 void pow_with_fallback(int num_fpu_regs_in_use) { pow_or_exp(false, num_fpu_regs_in_use); }
2406 private:
2408 // call runtime as a fallback for trig functions and pow/exp.
2409 void fp_runtime_fallback(address runtime_entry, int nb_args, int num_fpu_regs_in_use);
2411 // computes 2^(Ylog2X); Ylog2X in ST(0)
2412 void pow_exp_core_encoding();
2414 // computes pow(x,y) or exp(x). Fallback to runtime call included.
2415 void pow_or_exp(bool is_exp, int num_fpu_regs_in_use);
2417 // these are private because users should be doing movflt/movdbl
2419 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); }
2420 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); }
2421 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); }
2422 void movss(XMMRegister dst, AddressLiteral src);
2424 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); }
2425 void movlpd(XMMRegister dst, AddressLiteral src);
2427 public:
2429 void addsd(XMMRegister dst, XMMRegister src) { Assembler::addsd(dst, src); }
2430 void addsd(XMMRegister dst, Address src) { Assembler::addsd(dst, src); }
2431 void addsd(XMMRegister dst, AddressLiteral src);
2433 void addss(XMMRegister dst, XMMRegister src) { Assembler::addss(dst, src); }
2434 void addss(XMMRegister dst, Address src) { Assembler::addss(dst, src); }
2435 void addss(XMMRegister dst, AddressLiteral src);
2437 void divsd(XMMRegister dst, XMMRegister src) { Assembler::divsd(dst, src); }
2438 void divsd(XMMRegister dst, Address src) { Assembler::divsd(dst, src); }
2439 void divsd(XMMRegister dst, AddressLiteral src);
2441 void divss(XMMRegister dst, XMMRegister src) { Assembler::divss(dst, src); }
2442 void divss(XMMRegister dst, Address src) { Assembler::divss(dst, src); }
2443 void divss(XMMRegister dst, AddressLiteral src);
2445 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); }
2446 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); }
2447 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); }
2448 void movsd(XMMRegister dst, AddressLiteral src);
2450 void mulsd(XMMRegister dst, XMMRegister src) { Assembler::mulsd(dst, src); }
2451 void mulsd(XMMRegister dst, Address src) { Assembler::mulsd(dst, src); }
2452 void mulsd(XMMRegister dst, AddressLiteral src);
2454 void mulss(XMMRegister dst, XMMRegister src) { Assembler::mulss(dst, src); }
2455 void mulss(XMMRegister dst, Address src) { Assembler::mulss(dst, src); }
2456 void mulss(XMMRegister dst, AddressLiteral src);
2458 void sqrtsd(XMMRegister dst, XMMRegister src) { Assembler::sqrtsd(dst, src); }
2459 void sqrtsd(XMMRegister dst, Address src) { Assembler::sqrtsd(dst, src); }
2460 void sqrtsd(XMMRegister dst, AddressLiteral src);
2462 void sqrtss(XMMRegister dst, XMMRegister src) { Assembler::sqrtss(dst, src); }
2463 void sqrtss(XMMRegister dst, Address src) { Assembler::sqrtss(dst, src); }
2464 void sqrtss(XMMRegister dst, AddressLiteral src);
2466 void subsd(XMMRegister dst, XMMRegister src) { Assembler::subsd(dst, src); }
2467 void subsd(XMMRegister dst, Address src) { Assembler::subsd(dst, src); }
2468 void subsd(XMMRegister dst, AddressLiteral src);
2470 void subss(XMMRegister dst, XMMRegister src) { Assembler::subss(dst, src); }
2471 void subss(XMMRegister dst, Address src) { Assembler::subss(dst, src); }
2472 void subss(XMMRegister dst, AddressLiteral src);
2474 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); }
2475 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); }
2476 void ucomiss(XMMRegister dst, AddressLiteral src);
2478 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); }
2479 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); }
2480 void ucomisd(XMMRegister dst, AddressLiteral src);
2482 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
2483 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); }
2484 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); }
2485 void xorpd(XMMRegister dst, AddressLiteral src);
2487 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
2488 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); }
2489 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); }
2490 void xorps(XMMRegister dst, AddressLiteral src);
2492 // AVX 3-operands instructions
2494 void vaddsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddsd(dst, nds, src); }
2495 void vaddsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddsd(dst, nds, src); }
2496 void vaddsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2498 void vaddss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vaddss(dst, nds, src); }
2499 void vaddss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vaddss(dst, nds, src); }
2500 void vaddss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2502 void vandpd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vandpd(dst, nds, src); }
2503 void vandpd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2505 void vandps(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vandps(dst, nds, src); }
2506 void vandps(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2508 void vdivsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivsd(dst, nds, src); }
2509 void vdivsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivsd(dst, nds, src); }
2510 void vdivsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2512 void vdivss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vdivss(dst, nds, src); }
2513 void vdivss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vdivss(dst, nds, src); }
2514 void vdivss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2516 void vmulsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulsd(dst, nds, src); }
2517 void vmulsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulsd(dst, nds, src); }
2518 void vmulsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2520 void vmulss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vmulss(dst, nds, src); }
2521 void vmulss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vmulss(dst, nds, src); }
2522 void vmulss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2524 void vsubsd(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubsd(dst, nds, src); }
2525 void vsubsd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubsd(dst, nds, src); }
2526 void vsubsd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2528 void vsubss(XMMRegister dst, XMMRegister nds, XMMRegister src) { Assembler::vsubss(dst, nds, src); }
2529 void vsubss(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vsubss(dst, nds, src); }
2530 void vsubss(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2532 void vxorpd(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vxorpd(dst, nds, src); }
2533 void vxorpd(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2535 void vxorps(XMMRegister dst, XMMRegister nds, Address src) { Assembler::vxorps(dst, nds, src); }
2536 void vxorps(XMMRegister dst, XMMRegister nds, AddressLiteral src);
2539 // Data
2541 void cmov32( Condition cc, Register dst, Address src);
2542 void cmov32( Condition cc, Register dst, Register src);
2544 void cmov( Condition cc, Register dst, Register src) { cmovptr(cc, dst, src); }
2546 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
2547 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmov32(cc, dst, src)); }
2549 void movoop(Register dst, jobject obj);
2550 void movoop(Address dst, jobject obj);
2552 void movptr(ArrayAddress dst, Register src);
2553 // can this do an lea?
2554 void movptr(Register dst, ArrayAddress src);
2556 void movptr(Register dst, Address src);
2558 void movptr(Register dst, AddressLiteral src);
2560 void movptr(Register dst, intptr_t src);
2561 void movptr(Register dst, Register src);
2562 void movptr(Address dst, intptr_t src);
2564 void movptr(Address dst, Register src);
2566 void movptr(Register dst, RegisterOrConstant src) {
2567 if (src.is_constant()) movptr(dst, src.as_constant());
2568 else movptr(dst, src.as_register());
2569 }
2571 #ifdef _LP64
2572 // Generally the next two are only used for moving NULL
2573 // Although there are situations in initializing the mark word where
2574 // they could be used. They are dangerous.
2576 // They only exist on LP64 so that int32_t and intptr_t are not the same
2577 // and we have ambiguous declarations.
2579 void movptr(Address dst, int32_t imm32);
2580 void movptr(Register dst, int32_t imm32);
2581 #endif // _LP64
2583 // to avoid hiding movl
2584 void mov32(AddressLiteral dst, Register src);
2585 void mov32(Register dst, AddressLiteral src);
2587 // to avoid hiding movb
2588 void movbyte(ArrayAddress dst, int src);
2590 // Can push value or effective address
2591 void pushptr(AddressLiteral src);
2593 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); }
2594 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); }
2596 void pushoop(jobject obj);
2598 // sign extend as need a l to ptr sized element
2599 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); }
2600 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); }
2602 // C2 compiled method's prolog code.
2603 void verified_entry(int framesize, bool stack_bang, bool fp_mode_24b);
2605 // IndexOf strings.
2606 // Small strings are loaded through stack if they cross page boundary.
2607 void string_indexof(Register str1, Register str2,
2608 Register cnt1, Register cnt2,
2609 int int_cnt2, Register result,
2610 XMMRegister vec, Register tmp);
2612 // IndexOf for constant substrings with size >= 8 elements
2613 // which don't need to be loaded through stack.
2614 void string_indexofC8(Register str1, Register str2,
2615 Register cnt1, Register cnt2,
2616 int int_cnt2, Register result,
2617 XMMRegister vec, Register tmp);
2619 // Smallest code: we don't need to load through stack,
2620 // check string tail.
2622 // Compare strings.
2623 void string_compare(Register str1, Register str2,
2624 Register cnt1, Register cnt2, Register result,
2625 XMMRegister vec1);
2627 // Compare char[] arrays.
2628 void char_arrays_equals(bool is_array_equ, Register ary1, Register ary2,
2629 Register limit, Register result, Register chr,
2630 XMMRegister vec1, XMMRegister vec2);
2632 // Fill primitive arrays
2633 void generate_fill(BasicType t, bool aligned,
2634 Register to, Register value, Register count,
2635 Register rtmp, XMMRegister xtmp);
2637 #undef VIRTUAL
2639 };
2641 /**
2642 * class SkipIfEqual:
2643 *
2644 * Instantiating this class will result in assembly code being output that will
2645 * jump around any code emitted between the creation of the instance and it's
2646 * automatic destruction at the end of a scope block, depending on the value of
2647 * the flag passed to the constructor, which will be checked at run-time.
2648 */
2649 class SkipIfEqual {
2650 private:
2651 MacroAssembler* _masm;
2652 Label _label;
2654 public:
2655 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
2656 ~SkipIfEqual();
2657 };
2659 #ifdef ASSERT
2660 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; }
2661 #endif
2663 #endif // CPU_X86_VM_ASSEMBLER_X86_HPP
