Tue, 10 Mar 2009 08:52:16 -0700
Merge
1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 class BiasedLockingCounters;
27 // Contains all the definitions needed for x86 assembly code generation.
29 // Calling convention
30 class Argument VALUE_OBJ_CLASS_SPEC {
31 public:
32 enum {
33 #ifdef _LP64
34 #ifdef _WIN64
35 n_int_register_parameters_c = 4, // rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...)
36 n_float_register_parameters_c = 4, // xmm0 - xmm3 (c_farg0, c_farg1, ... )
37 #else
38 n_int_register_parameters_c = 6, // rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...)
39 n_float_register_parameters_c = 8, // xmm0 - xmm7 (c_farg0, c_farg1, ... )
40 #endif // _WIN64
41 n_int_register_parameters_j = 6, // j_rarg0, j_rarg1, ...
42 n_float_register_parameters_j = 8 // j_farg0, j_farg1, ...
43 #else
44 n_register_parameters = 0 // 0 registers used to pass arguments
45 #endif // _LP64
46 };
47 };
50 #ifdef _LP64
51 // Symbolically name the register arguments used by the c calling convention.
52 // Windows is different from linux/solaris. So much for standards...
54 #ifdef _WIN64
56 REGISTER_DECLARATION(Register, c_rarg0, rcx);
57 REGISTER_DECLARATION(Register, c_rarg1, rdx);
58 REGISTER_DECLARATION(Register, c_rarg2, r8);
59 REGISTER_DECLARATION(Register, c_rarg3, r9);
61 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0);
62 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1);
63 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2);
64 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3);
66 #else
68 REGISTER_DECLARATION(Register, c_rarg0, rdi);
69 REGISTER_DECLARATION(Register, c_rarg1, rsi);
70 REGISTER_DECLARATION(Register, c_rarg2, rdx);
71 REGISTER_DECLARATION(Register, c_rarg3, rcx);
72 REGISTER_DECLARATION(Register, c_rarg4, r8);
73 REGISTER_DECLARATION(Register, c_rarg5, r9);
75 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0);
76 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1);
77 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2);
78 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3);
79 REGISTER_DECLARATION(XMMRegister, c_farg4, xmm4);
80 REGISTER_DECLARATION(XMMRegister, c_farg5, xmm5);
81 REGISTER_DECLARATION(XMMRegister, c_farg6, xmm6);
82 REGISTER_DECLARATION(XMMRegister, c_farg7, xmm7);
84 #endif // _WIN64
86 // Symbolically name the register arguments used by the Java calling convention.
87 // We have control over the convention for java so we can do what we please.
88 // What pleases us is to offset the java calling convention so that when
89 // we call a suitable jni method the arguments are lined up and we don't
90 // have to do little shuffling. A suitable jni method is non-static and a
91 // small number of arguments (two fewer args on windows)
92 //
93 // |-------------------------------------------------------|
94 // | c_rarg0 c_rarg1 c_rarg2 c_rarg3 c_rarg4 c_rarg5 |
95 // |-------------------------------------------------------|
96 // | rcx rdx r8 r9 rdi* rsi* | windows (* not a c_rarg)
97 // | rdi rsi rdx rcx r8 r9 | solaris/linux
98 // |-------------------------------------------------------|
99 // | j_rarg5 j_rarg0 j_rarg1 j_rarg2 j_rarg3 j_rarg4 |
100 // |-------------------------------------------------------|
102 REGISTER_DECLARATION(Register, j_rarg0, c_rarg1);
103 REGISTER_DECLARATION(Register, j_rarg1, c_rarg2);
104 REGISTER_DECLARATION(Register, j_rarg2, c_rarg3);
105 // Windows runs out of register args here
106 #ifdef _WIN64
107 REGISTER_DECLARATION(Register, j_rarg3, rdi);
108 REGISTER_DECLARATION(Register, j_rarg4, rsi);
109 #else
110 REGISTER_DECLARATION(Register, j_rarg3, c_rarg4);
111 REGISTER_DECLARATION(Register, j_rarg4, c_rarg5);
112 #endif /* _WIN64 */
113 REGISTER_DECLARATION(Register, j_rarg5, c_rarg0);
115 REGISTER_DECLARATION(XMMRegister, j_farg0, xmm0);
116 REGISTER_DECLARATION(XMMRegister, j_farg1, xmm1);
117 REGISTER_DECLARATION(XMMRegister, j_farg2, xmm2);
118 REGISTER_DECLARATION(XMMRegister, j_farg3, xmm3);
119 REGISTER_DECLARATION(XMMRegister, j_farg4, xmm4);
120 REGISTER_DECLARATION(XMMRegister, j_farg5, xmm5);
121 REGISTER_DECLARATION(XMMRegister, j_farg6, xmm6);
122 REGISTER_DECLARATION(XMMRegister, j_farg7, xmm7);
124 REGISTER_DECLARATION(Register, rscratch1, r10); // volatile
125 REGISTER_DECLARATION(Register, rscratch2, r11); // volatile
127 REGISTER_DECLARATION(Register, r12_heapbase, r12); // callee-saved
128 REGISTER_DECLARATION(Register, r15_thread, r15); // callee-saved
130 #else
131 // rscratch1 will apear in 32bit code that is dead but of course must compile
132 // Using noreg ensures if the dead code is incorrectly live and executed it
133 // will cause an assertion failure
134 #define rscratch1 noreg
136 #endif // _LP64
138 // Address is an abstraction used to represent a memory location
139 // using any of the amd64 addressing modes with one object.
140 //
141 // Note: A register location is represented via a Register, not
142 // via an address for efficiency & simplicity reasons.
144 class ArrayAddress;
146 class Address VALUE_OBJ_CLASS_SPEC {
147 public:
148 enum ScaleFactor {
149 no_scale = -1,
150 times_1 = 0,
151 times_2 = 1,
152 times_4 = 2,
153 times_8 = 3,
154 times_ptr = LP64_ONLY(times_8) NOT_LP64(times_4)
155 };
156 static ScaleFactor times(int size) {
157 assert(size >= 1 && size <= 8 && is_power_of_2(size), "bad scale size");
158 if (size == 8) return times_8;
159 if (size == 4) return times_4;
160 if (size == 2) return times_2;
161 return times_1;
162 }
163 static int scale_size(ScaleFactor scale) {
164 assert(scale != no_scale, "");
165 assert(((1 << (int)times_1) == 1 &&
166 (1 << (int)times_2) == 2 &&
167 (1 << (int)times_4) == 4 &&
168 (1 << (int)times_8) == 8), "");
169 return (1 << (int)scale);
170 }
172 private:
173 Register _base;
174 Register _index;
175 ScaleFactor _scale;
176 int _disp;
177 RelocationHolder _rspec;
179 // Easily misused constructors make them private
180 // %%% can we make these go away?
181 NOT_LP64(Address(address loc, RelocationHolder spec);)
182 Address(int disp, address loc, relocInfo::relocType rtype);
183 Address(int disp, address loc, RelocationHolder spec);
185 public:
187 int disp() { return _disp; }
188 // creation
189 Address()
190 : _base(noreg),
191 _index(noreg),
192 _scale(no_scale),
193 _disp(0) {
194 }
196 // No default displacement otherwise Register can be implicitly
197 // converted to 0(Register) which is quite a different animal.
199 Address(Register base, int disp)
200 : _base(base),
201 _index(noreg),
202 _scale(no_scale),
203 _disp(disp) {
204 }
206 Address(Register base, Register index, ScaleFactor scale, int disp = 0)
207 : _base (base),
208 _index(index),
209 _scale(scale),
210 _disp (disp) {
211 assert(!index->is_valid() == (scale == Address::no_scale),
212 "inconsistent address");
213 }
215 Address(Register base, RegisterConstant index, ScaleFactor scale = times_1, int disp = 0)
216 : _base (base),
217 _index(index.register_or_noreg()),
218 _scale(scale),
219 _disp (disp + (index.constant_or_zero() * scale_size(scale))) {
220 if (!index.is_register()) scale = Address::no_scale;
221 assert(!_index->is_valid() == (scale == Address::no_scale),
222 "inconsistent address");
223 }
225 Address plus_disp(int disp) const {
226 Address a = (*this);
227 a._disp += disp;
228 return a;
229 }
231 // The following two overloads are used in connection with the
232 // ByteSize type (see sizes.hpp). They simplify the use of
233 // ByteSize'd arguments in assembly code. Note that their equivalent
234 // for the optimized build are the member functions with int disp
235 // argument since ByteSize is mapped to an int type in that case.
236 //
237 // Note: DO NOT introduce similar overloaded functions for WordSize
238 // arguments as in the optimized mode, both ByteSize and WordSize
239 // are mapped to the same type and thus the compiler cannot make a
240 // distinction anymore (=> compiler errors).
242 #ifdef ASSERT
243 Address(Register base, ByteSize disp)
244 : _base(base),
245 _index(noreg),
246 _scale(no_scale),
247 _disp(in_bytes(disp)) {
248 }
250 Address(Register base, Register index, ScaleFactor scale, ByteSize disp)
251 : _base(base),
252 _index(index),
253 _scale(scale),
254 _disp(in_bytes(disp)) {
255 assert(!index->is_valid() == (scale == Address::no_scale),
256 "inconsistent address");
257 }
259 Address(Register base, RegisterConstant index, ScaleFactor scale, ByteSize disp)
260 : _base (base),
261 _index(index.register_or_noreg()),
262 _scale(scale),
263 _disp (in_bytes(disp) + (index.constant_or_zero() * scale_size(scale))) {
264 if (!index.is_register()) scale = Address::no_scale;
265 assert(!_index->is_valid() == (scale == Address::no_scale),
266 "inconsistent address");
267 }
269 #endif // ASSERT
271 // accessors
272 bool uses(Register reg) const { return _base == reg || _index == reg; }
273 Register base() const { return _base; }
274 Register index() const { return _index; }
275 ScaleFactor scale() const { return _scale; }
276 int disp() const { return _disp; }
278 // Convert the raw encoding form into the form expected by the constructor for
279 // Address. An index of 4 (rsp) corresponds to having no index, so convert
280 // that to noreg for the Address constructor.
281 static Address make_raw(int base, int index, int scale, int disp, bool disp_is_oop);
283 static Address make_array(ArrayAddress);
285 private:
286 bool base_needs_rex() const {
287 return _base != noreg && _base->encoding() >= 8;
288 }
290 bool index_needs_rex() const {
291 return _index != noreg &&_index->encoding() >= 8;
292 }
294 relocInfo::relocType reloc() const { return _rspec.type(); }
296 friend class Assembler;
297 friend class MacroAssembler;
298 friend class LIR_Assembler; // base/index/scale/disp
299 };
301 //
302 // AddressLiteral has been split out from Address because operands of this type
303 // need to be treated specially on 32bit vs. 64bit platforms. By splitting it out
304 // the few instructions that need to deal with address literals are unique and the
305 // MacroAssembler does not have to implement every instruction in the Assembler
306 // in order to search for address literals that may need special handling depending
307 // on the instruction and the platform. As small step on the way to merging i486/amd64
308 // directories.
309 //
310 class AddressLiteral VALUE_OBJ_CLASS_SPEC {
311 friend class ArrayAddress;
312 RelocationHolder _rspec;
313 // Typically we use AddressLiterals we want to use their rval
314 // However in some situations we want the lval (effect address) of the item.
315 // We provide a special factory for making those lvals.
316 bool _is_lval;
318 // If the target is far we'll need to load the ea of this to
319 // a register to reach it. Otherwise if near we can do rip
320 // relative addressing.
322 address _target;
324 protected:
325 // creation
326 AddressLiteral()
327 : _is_lval(false),
328 _target(NULL)
329 {}
331 public:
334 AddressLiteral(address target, relocInfo::relocType rtype);
336 AddressLiteral(address target, RelocationHolder const& rspec)
337 : _rspec(rspec),
338 _is_lval(false),
339 _target(target)
340 {}
342 AddressLiteral addr() {
343 AddressLiteral ret = *this;
344 ret._is_lval = true;
345 return ret;
346 }
349 private:
351 address target() { return _target; }
352 bool is_lval() { return _is_lval; }
354 relocInfo::relocType reloc() const { return _rspec.type(); }
355 const RelocationHolder& rspec() const { return _rspec; }
357 friend class Assembler;
358 friend class MacroAssembler;
359 friend class Address;
360 friend class LIR_Assembler;
361 };
363 // Convience classes
364 class RuntimeAddress: public AddressLiteral {
366 public:
368 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {}
370 };
372 class OopAddress: public AddressLiteral {
374 public:
376 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){}
378 };
380 class ExternalAddress: public AddressLiteral {
382 public:
384 ExternalAddress(address target) : AddressLiteral(target, relocInfo::external_word_type){}
386 };
388 class InternalAddress: public AddressLiteral {
390 public:
392 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {}
394 };
396 // x86 can do array addressing as a single operation since disp can be an absolute
397 // address amd64 can't. We create a class that expresses the concept but does extra
398 // magic on amd64 to get the final result
400 class ArrayAddress VALUE_OBJ_CLASS_SPEC {
401 private:
403 AddressLiteral _base;
404 Address _index;
406 public:
408 ArrayAddress() {};
409 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {};
410 AddressLiteral base() { return _base; }
411 Address index() { return _index; }
413 };
415 const int FPUStateSizeInWords = NOT_LP64(27) LP64_ONLY( 512 / wordSize);
417 // The Intel x86/Amd64 Assembler: Pure assembler doing NO optimizations on the instruction
418 // level (e.g. mov rax, 0 is not translated into xor rax, rax!); i.e., what you write
419 // is what you get. The Assembler is generating code into a CodeBuffer.
421 class Assembler : public AbstractAssembler {
422 friend class AbstractAssembler; // for the non-virtual hack
423 friend class LIR_Assembler; // as_Address()
424 friend class StubGenerator;
426 public:
427 enum Condition { // The x86 condition codes used for conditional jumps/moves.
428 zero = 0x4,
429 notZero = 0x5,
430 equal = 0x4,
431 notEqual = 0x5,
432 less = 0xc,
433 lessEqual = 0xe,
434 greater = 0xf,
435 greaterEqual = 0xd,
436 below = 0x2,
437 belowEqual = 0x6,
438 above = 0x7,
439 aboveEqual = 0x3,
440 overflow = 0x0,
441 noOverflow = 0x1,
442 carrySet = 0x2,
443 carryClear = 0x3,
444 negative = 0x8,
445 positive = 0x9,
446 parity = 0xa,
447 noParity = 0xb
448 };
450 enum Prefix {
451 // segment overrides
452 CS_segment = 0x2e,
453 SS_segment = 0x36,
454 DS_segment = 0x3e,
455 ES_segment = 0x26,
456 FS_segment = 0x64,
457 GS_segment = 0x65,
459 REX = 0x40,
461 REX_B = 0x41,
462 REX_X = 0x42,
463 REX_XB = 0x43,
464 REX_R = 0x44,
465 REX_RB = 0x45,
466 REX_RX = 0x46,
467 REX_RXB = 0x47,
469 REX_W = 0x48,
471 REX_WB = 0x49,
472 REX_WX = 0x4A,
473 REX_WXB = 0x4B,
474 REX_WR = 0x4C,
475 REX_WRB = 0x4D,
476 REX_WRX = 0x4E,
477 REX_WRXB = 0x4F
478 };
480 enum WhichOperand {
481 // input to locate_operand, and format code for relocations
482 imm_operand = 0, // embedded 32-bit|64-bit immediate operand
483 disp32_operand = 1, // embedded 32-bit displacement or address
484 call32_operand = 2, // embedded 32-bit self-relative displacement
485 #ifndef _LP64
486 _WhichOperand_limit = 3
487 #else
488 narrow_oop_operand = 3, // embedded 32-bit immediate narrow oop
489 _WhichOperand_limit = 4
490 #endif
491 };
495 // NOTE: The general philopsophy of the declarations here is that 64bit versions
496 // of instructions are freely declared without the need for wrapping them an ifdef.
497 // (Some dangerous instructions are ifdef's out of inappropriate jvm's.)
498 // In the .cpp file the implementations are wrapped so that they are dropped out
499 // of the resulting jvm. This is done mostly to keep the footprint of KERNEL
500 // to the size it was prior to merging up the 32bit and 64bit assemblers.
501 //
502 // This does mean you'll get a linker/runtime error if you use a 64bit only instruction
503 // in a 32bit vm. This is somewhat unfortunate but keeps the ifdef noise down.
505 private:
508 // 64bit prefixes
509 int prefix_and_encode(int reg_enc, bool byteinst = false);
510 int prefixq_and_encode(int reg_enc);
512 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false);
513 int prefixq_and_encode(int dst_enc, int src_enc);
515 void prefix(Register reg);
516 void prefix(Address adr);
517 void prefixq(Address adr);
519 void prefix(Address adr, Register reg, bool byteinst = false);
520 void prefixq(Address adr, Register reg);
522 void prefix(Address adr, XMMRegister reg);
524 void prefetch_prefix(Address src);
526 // Helper functions for groups of instructions
527 void emit_arith_b(int op1, int op2, Register dst, int imm8);
529 void emit_arith(int op1, int op2, Register dst, int32_t imm32);
530 // only 32bit??
531 void emit_arith(int op1, int op2, Register dst, jobject obj);
532 void emit_arith(int op1, int op2, Register dst, Register src);
534 void emit_operand(Register reg,
535 Register base, Register index, Address::ScaleFactor scale,
536 int disp,
537 RelocationHolder const& rspec,
538 int rip_relative_correction = 0);
540 void emit_operand(Register reg, Address adr, int rip_relative_correction = 0);
542 // operands that only take the original 32bit registers
543 void emit_operand32(Register reg, Address adr);
545 void emit_operand(XMMRegister reg,
546 Register base, Register index, Address::ScaleFactor scale,
547 int disp,
548 RelocationHolder const& rspec);
550 void emit_operand(XMMRegister reg, Address adr);
552 void emit_operand(MMXRegister reg, Address adr);
554 // workaround gcc (3.2.1-7) bug
555 void emit_operand(Address adr, MMXRegister reg);
558 // Immediate-to-memory forms
559 void emit_arith_operand(int op1, Register rm, Address adr, int32_t imm32);
561 void emit_farith(int b1, int b2, int i);
564 protected:
565 #ifdef ASSERT
566 void check_relocation(RelocationHolder const& rspec, int format);
567 #endif
569 inline void emit_long64(jlong x);
571 void emit_data(jint data, relocInfo::relocType rtype, int format);
572 void emit_data(jint data, RelocationHolder const& rspec, int format);
573 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0);
574 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0);
577 bool reachable(AddressLiteral adr) NOT_LP64({ return true;});
579 // These are all easily abused and hence protected
581 void mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec, int format = 0);
583 // 32BIT ONLY SECTION
584 #ifndef _LP64
585 // Make these disappear in 64bit mode since they would never be correct
586 void cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
587 void cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
589 void mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
591 void push_literal32(int32_t imm32, RelocationHolder const& rspec); // 32BIT ONLY
592 #else
593 // 64BIT ONLY SECTION
594 void mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec); // 64BIT ONLY
595 #endif // _LP64
597 // These are unique in that we are ensured by the caller that the 32bit
598 // relative in these instructions will always be able to reach the potentially
599 // 64bit address described by entry. Since they can take a 64bit address they
600 // don't have the 32 suffix like the other instructions in this class.
602 void call_literal(address entry, RelocationHolder const& rspec);
603 void jmp_literal(address entry, RelocationHolder const& rspec);
605 // Avoid using directly section
606 // Instructions in this section are actually usable by anyone without danger
607 // of failure but have performance issues that are addressed my enhanced
608 // instructions which will do the proper thing base on the particular cpu.
609 // We protect them because we don't trust you...
611 // Don't use next inc() and dec() methods directly. INC & DEC instructions
612 // could cause a partial flag stall since they don't set CF flag.
613 // Use MacroAssembler::decrement() & MacroAssembler::increment() methods
614 // which call inc() & dec() or add() & sub() in accordance with
615 // the product flag UseIncDec value.
617 void decl(Register dst);
618 void decl(Address dst);
619 void decq(Register dst);
620 void decq(Address dst);
622 void incl(Register dst);
623 void incl(Address dst);
624 void incq(Register dst);
625 void incq(Address dst);
627 // New cpus require use of movsd and movss to avoid partial register stall
628 // when loading from memory. But for old Opteron use movlpd instead of movsd.
629 // The selection is done in MacroAssembler::movdbl() and movflt().
631 // Move Scalar Single-Precision Floating-Point Values
632 void movss(XMMRegister dst, Address src);
633 void movss(XMMRegister dst, XMMRegister src);
634 void movss(Address dst, XMMRegister src);
636 // Move Scalar Double-Precision Floating-Point Values
637 void movsd(XMMRegister dst, Address src);
638 void movsd(XMMRegister dst, XMMRegister src);
639 void movsd(Address dst, XMMRegister src);
640 void movlpd(XMMRegister dst, Address src);
642 // New cpus require use of movaps and movapd to avoid partial register stall
643 // when moving between registers.
644 void movaps(XMMRegister dst, XMMRegister src);
645 void movapd(XMMRegister dst, XMMRegister src);
647 // End avoid using directly
650 // Instruction prefixes
651 void prefix(Prefix p);
653 public:
655 // Creation
656 Assembler(CodeBuffer* code) : AbstractAssembler(code) {}
658 // Decoding
659 static address locate_operand(address inst, WhichOperand which);
660 static address locate_next_instruction(address inst);
662 // Utilities
664 #ifdef _LP64
665 static bool is_simm(int64_t x, int nbits) { return -( CONST64(1) << (nbits-1) ) <= x && x < ( CONST64(1) << (nbits-1) ); }
666 static bool is_simm32(int64_t x) { return x == (int64_t)(int32_t)x; }
667 #else
668 static bool is_simm(int32_t x, int nbits) { return -( 1 << (nbits-1) ) <= x && x < ( 1 << (nbits-1) ); }
669 static bool is_simm32(int32_t x) { return true; }
670 #endif // LP64
672 // Generic instructions
673 // Does 32bit or 64bit as needed for the platform. In some sense these
674 // belong in macro assembler but there is no need for both varieties to exist
676 void lea(Register dst, Address src);
678 void mov(Register dst, Register src);
680 void pusha();
681 void popa();
683 void pushf();
684 void popf();
686 void push(int32_t imm32);
688 void push(Register src);
690 void pop(Register dst);
692 // These are dummies to prevent surprise implicit conversions to Register
693 void push(void* v);
694 void pop(void* v);
697 // These do register sized moves/scans
698 void rep_mov();
699 void rep_set();
700 void repne_scan();
701 #ifdef _LP64
702 void repne_scanl();
703 #endif
705 // Vanilla instructions in lexical order
707 void adcl(Register dst, int32_t imm32);
708 void adcl(Register dst, Address src);
709 void adcl(Register dst, Register src);
711 void adcq(Register dst, int32_t imm32);
712 void adcq(Register dst, Address src);
713 void adcq(Register dst, Register src);
716 void addl(Address dst, int32_t imm32);
717 void addl(Address dst, Register src);
718 void addl(Register dst, int32_t imm32);
719 void addl(Register dst, Address src);
720 void addl(Register dst, Register src);
722 void addq(Address dst, int32_t imm32);
723 void addq(Address dst, Register src);
724 void addq(Register dst, int32_t imm32);
725 void addq(Register dst, Address src);
726 void addq(Register dst, Register src);
729 void addr_nop_4();
730 void addr_nop_5();
731 void addr_nop_7();
732 void addr_nop_8();
734 // Add Scalar Double-Precision Floating-Point Values
735 void addsd(XMMRegister dst, Address src);
736 void addsd(XMMRegister dst, XMMRegister src);
738 // Add Scalar Single-Precision Floating-Point Values
739 void addss(XMMRegister dst, Address src);
740 void addss(XMMRegister dst, XMMRegister src);
742 void andl(Register dst, int32_t imm32);
743 void andl(Register dst, Address src);
744 void andl(Register dst, Register src);
746 void andq(Register dst, int32_t imm32);
747 void andq(Register dst, Address src);
748 void andq(Register dst, Register src);
751 // Bitwise Logical AND of Packed Double-Precision Floating-Point Values
752 void andpd(XMMRegister dst, Address src);
753 void andpd(XMMRegister dst, XMMRegister src);
755 void bswapl(Register reg);
757 void bswapq(Register reg);
759 void call(Label& L, relocInfo::relocType rtype);
760 void call(Register reg); // push pc; pc <- reg
761 void call(Address adr); // push pc; pc <- adr
763 void cdql();
765 void cdqq();
767 void cld() { emit_byte(0xfc); }
769 void clflush(Address adr);
771 void cmovl(Condition cc, Register dst, Register src);
772 void cmovl(Condition cc, Register dst, Address src);
774 void cmovq(Condition cc, Register dst, Register src);
775 void cmovq(Condition cc, Register dst, Address src);
778 void cmpb(Address dst, int imm8);
780 void cmpl(Address dst, int32_t imm32);
782 void cmpl(Register dst, int32_t imm32);
783 void cmpl(Register dst, Register src);
784 void cmpl(Register dst, Address src);
786 void cmpq(Address dst, int32_t imm32);
787 void cmpq(Address dst, Register src);
789 void cmpq(Register dst, int32_t imm32);
790 void cmpq(Register dst, Register src);
791 void cmpq(Register dst, Address src);
793 // these are dummies used to catch attempting to convert NULL to Register
794 void cmpl(Register dst, void* junk); // dummy
795 void cmpq(Register dst, void* junk); // dummy
797 void cmpw(Address dst, int imm16);
799 void cmpxchg8 (Address adr);
801 void cmpxchgl(Register reg, Address adr);
803 void cmpxchgq(Register reg, Address adr);
805 // Ordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
806 void comisd(XMMRegister dst, Address src);
808 // Ordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
809 void comiss(XMMRegister dst, Address src);
811 // Identify processor type and features
812 void cpuid() {
813 emit_byte(0x0F);
814 emit_byte(0xA2);
815 }
817 // Convert Scalar Double-Precision Floating-Point Value to Scalar Single-Precision Floating-Point Value
818 void cvtsd2ss(XMMRegister dst, XMMRegister src);
820 // Convert Doubleword Integer to Scalar Double-Precision Floating-Point Value
821 void cvtsi2sdl(XMMRegister dst, Register src);
822 void cvtsi2sdq(XMMRegister dst, Register src);
824 // Convert Doubleword Integer to Scalar Single-Precision Floating-Point Value
825 void cvtsi2ssl(XMMRegister dst, Register src);
826 void cvtsi2ssq(XMMRegister dst, Register src);
828 // Convert Packed Signed Doubleword Integers to Packed Double-Precision Floating-Point Value
829 void cvtdq2pd(XMMRegister dst, XMMRegister src);
831 // Convert Packed Signed Doubleword Integers to Packed Single-Precision Floating-Point Value
832 void cvtdq2ps(XMMRegister dst, XMMRegister src);
834 // Convert Scalar Single-Precision Floating-Point Value to Scalar Double-Precision Floating-Point Value
835 void cvtss2sd(XMMRegister dst, XMMRegister src);
837 // Convert with Truncation Scalar Double-Precision Floating-Point Value to Doubleword Integer
838 void cvttsd2sil(Register dst, Address src);
839 void cvttsd2sil(Register dst, XMMRegister src);
840 void cvttsd2siq(Register dst, XMMRegister src);
842 // Convert with Truncation Scalar Single-Precision Floating-Point Value to Doubleword Integer
843 void cvttss2sil(Register dst, XMMRegister src);
844 void cvttss2siq(Register dst, XMMRegister src);
846 // Divide Scalar Double-Precision Floating-Point Values
847 void divsd(XMMRegister dst, Address src);
848 void divsd(XMMRegister dst, XMMRegister src);
850 // Divide Scalar Single-Precision Floating-Point Values
851 void divss(XMMRegister dst, Address src);
852 void divss(XMMRegister dst, XMMRegister src);
854 void emms();
856 void fabs();
858 void fadd(int i);
860 void fadd_d(Address src);
861 void fadd_s(Address src);
863 // "Alternate" versions of x87 instructions place result down in FPU
864 // stack instead of on TOS
866 void fadda(int i); // "alternate" fadd
867 void faddp(int i = 1);
869 void fchs();
871 void fcom(int i);
873 void fcomp(int i = 1);
874 void fcomp_d(Address src);
875 void fcomp_s(Address src);
877 void fcompp();
879 void fcos();
881 void fdecstp();
883 void fdiv(int i);
884 void fdiv_d(Address src);
885 void fdivr_s(Address src);
886 void fdiva(int i); // "alternate" fdiv
887 void fdivp(int i = 1);
889 void fdivr(int i);
890 void fdivr_d(Address src);
891 void fdiv_s(Address src);
893 void fdivra(int i); // "alternate" reversed fdiv
895 void fdivrp(int i = 1);
897 void ffree(int i = 0);
899 void fild_d(Address adr);
900 void fild_s(Address adr);
902 void fincstp();
904 void finit();
906 void fist_s (Address adr);
907 void fistp_d(Address adr);
908 void fistp_s(Address adr);
910 void fld1();
912 void fld_d(Address adr);
913 void fld_s(Address adr);
914 void fld_s(int index);
915 void fld_x(Address adr); // extended-precision (80-bit) format
917 void fldcw(Address src);
919 void fldenv(Address src);
921 void fldlg2();
923 void fldln2();
925 void fldz();
927 void flog();
928 void flog10();
930 void fmul(int i);
932 void fmul_d(Address src);
933 void fmul_s(Address src);
935 void fmula(int i); // "alternate" fmul
937 void fmulp(int i = 1);
939 void fnsave(Address dst);
941 void fnstcw(Address src);
943 void fnstsw_ax();
945 void fprem();
946 void fprem1();
948 void frstor(Address src);
950 void fsin();
952 void fsqrt();
954 void fst_d(Address adr);
955 void fst_s(Address adr);
957 void fstp_d(Address adr);
958 void fstp_d(int index);
959 void fstp_s(Address adr);
960 void fstp_x(Address adr); // extended-precision (80-bit) format
962 void fsub(int i);
963 void fsub_d(Address src);
964 void fsub_s(Address src);
966 void fsuba(int i); // "alternate" fsub
968 void fsubp(int i = 1);
970 void fsubr(int i);
971 void fsubr_d(Address src);
972 void fsubr_s(Address src);
974 void fsubra(int i); // "alternate" reversed fsub
976 void fsubrp(int i = 1);
978 void ftan();
980 void ftst();
982 void fucomi(int i = 1);
983 void fucomip(int i = 1);
985 void fwait();
987 void fxch(int i = 1);
989 void fxrstor(Address src);
991 void fxsave(Address dst);
993 void fyl2x();
995 void hlt();
997 void idivl(Register src);
999 void idivq(Register src);
1001 void imull(Register dst, Register src);
1002 void imull(Register dst, Register src, int value);
1004 void imulq(Register dst, Register src);
1005 void imulq(Register dst, Register src, int value);
1008 // jcc is the generic conditional branch generator to run-
1009 // time routines, jcc is used for branches to labels. jcc
1010 // takes a branch opcode (cc) and a label (L) and generates
1011 // either a backward branch or a forward branch and links it
1012 // to the label fixup chain. Usage:
1013 //
1014 // Label L; // unbound label
1015 // jcc(cc, L); // forward branch to unbound label
1016 // bind(L); // bind label to the current pc
1017 // jcc(cc, L); // backward branch to bound label
1018 // bind(L); // illegal: a label may be bound only once
1019 //
1020 // Note: The same Label can be used for forward and backward branches
1021 // but it may be bound only once.
1023 void jcc(Condition cc, Label& L,
1024 relocInfo::relocType rtype = relocInfo::none);
1026 // Conditional jump to a 8-bit offset to L.
1027 // WARNING: be very careful using this for forward jumps. If the label is
1028 // not bound within an 8-bit offset of this instruction, a run-time error
1029 // will occur.
1030 void jccb(Condition cc, Label& L);
1032 void jmp(Address entry); // pc <- entry
1034 // Label operations & relative jumps (PPUM Appendix D)
1035 void jmp(Label& L, relocInfo::relocType rtype = relocInfo::none); // unconditional jump to L
1037 void jmp(Register entry); // pc <- entry
1039 // Unconditional 8-bit offset jump to L.
1040 // WARNING: be very careful using this for forward jumps. If the label is
1041 // not bound within an 8-bit offset of this instruction, a run-time error
1042 // will occur.
1043 void jmpb(Label& L);
1045 void ldmxcsr( Address src );
1047 void leal(Register dst, Address src);
1049 void leaq(Register dst, Address src);
1051 void lfence() {
1052 emit_byte(0x0F);
1053 emit_byte(0xAE);
1054 emit_byte(0xE8);
1055 }
1057 void lock();
1059 enum Membar_mask_bits {
1060 StoreStore = 1 << 3,
1061 LoadStore = 1 << 2,
1062 StoreLoad = 1 << 1,
1063 LoadLoad = 1 << 0
1064 };
1066 // Serializes memory.
1067 void membar(Membar_mask_bits order_constraint) {
1068 // We only have to handle StoreLoad and LoadLoad
1069 if (order_constraint & StoreLoad) {
1070 // MFENCE subsumes LFENCE
1071 mfence();
1072 } /* [jk] not needed currently: else if (order_constraint & LoadLoad) {
1073 lfence();
1074 } */
1075 }
1077 void mfence();
1079 // Moves
1081 void mov64(Register dst, int64_t imm64);
1083 void movb(Address dst, Register src);
1084 void movb(Address dst, int imm8);
1085 void movb(Register dst, Address src);
1087 void movdl(XMMRegister dst, Register src);
1088 void movdl(Register dst, XMMRegister src);
1090 // Move Double Quadword
1091 void movdq(XMMRegister dst, Register src);
1092 void movdq(Register dst, XMMRegister src);
1094 // Move Aligned Double Quadword
1095 void movdqa(Address dst, XMMRegister src);
1096 void movdqa(XMMRegister dst, Address src);
1097 void movdqa(XMMRegister dst, XMMRegister src);
1099 // Move Unaligned Double Quadword
1100 void movdqu(Address dst, XMMRegister src);
1101 void movdqu(XMMRegister dst, Address src);
1102 void movdqu(XMMRegister dst, XMMRegister src);
1104 void movl(Register dst, int32_t imm32);
1105 void movl(Address dst, int32_t imm32);
1106 void movl(Register dst, Register src);
1107 void movl(Register dst, Address src);
1108 void movl(Address dst, Register src);
1110 // These dummies prevent using movl from converting a zero (like NULL) into Register
1111 // by giving the compiler two choices it can't resolve
1113 void movl(Address dst, void* junk);
1114 void movl(Register dst, void* junk);
1116 #ifdef _LP64
1117 void movq(Register dst, Register src);
1118 void movq(Register dst, Address src);
1119 void movq(Address dst, Register src);
1120 #endif
1122 void movq(Address dst, MMXRegister src );
1123 void movq(MMXRegister dst, Address src );
1125 #ifdef _LP64
1126 // These dummies prevent using movq from converting a zero (like NULL) into Register
1127 // by giving the compiler two choices it can't resolve
1129 void movq(Address dst, void* dummy);
1130 void movq(Register dst, void* dummy);
1131 #endif
1133 // Move Quadword
1134 void movq(Address dst, XMMRegister src);
1135 void movq(XMMRegister dst, Address src);
1137 void movsbl(Register dst, Address src);
1138 void movsbl(Register dst, Register src);
1140 #ifdef _LP64
1141 void movsbq(Register dst, Address src);
1142 void movsbq(Register dst, Register src);
1144 // Move signed 32bit immediate to 64bit extending sign
1145 void movslq(Address dst, int32_t imm64);
1146 void movslq(Register dst, int32_t imm64);
1148 void movslq(Register dst, Address src);
1149 void movslq(Register dst, Register src);
1150 void movslq(Register dst, void* src); // Dummy declaration to cause NULL to be ambiguous
1151 #endif
1153 void movswl(Register dst, Address src);
1154 void movswl(Register dst, Register src);
1156 #ifdef _LP64
1157 void movswq(Register dst, Address src);
1158 void movswq(Register dst, Register src);
1159 #endif
1161 void movw(Address dst, int imm16);
1162 void movw(Register dst, Address src);
1163 void movw(Address dst, Register src);
1165 void movzbl(Register dst, Address src);
1166 void movzbl(Register dst, Register src);
1168 #ifdef _LP64
1169 void movzbq(Register dst, Address src);
1170 void movzbq(Register dst, Register src);
1171 #endif
1173 void movzwl(Register dst, Address src);
1174 void movzwl(Register dst, Register src);
1176 #ifdef _LP64
1177 void movzwq(Register dst, Address src);
1178 void movzwq(Register dst, Register src);
1179 #endif
1181 void mull(Address src);
1182 void mull(Register src);
1184 // Multiply Scalar Double-Precision Floating-Point Values
1185 void mulsd(XMMRegister dst, Address src);
1186 void mulsd(XMMRegister dst, XMMRegister src);
1188 // Multiply Scalar Single-Precision Floating-Point Values
1189 void mulss(XMMRegister dst, Address src);
1190 void mulss(XMMRegister dst, XMMRegister src);
1192 void negl(Register dst);
1194 #ifdef _LP64
1195 void negq(Register dst);
1196 #endif
1198 void nop(int i = 1);
1200 void notl(Register dst);
1202 #ifdef _LP64
1203 void notq(Register dst);
1204 #endif
1206 void orl(Address dst, int32_t imm32);
1207 void orl(Register dst, int32_t imm32);
1208 void orl(Register dst, Address src);
1209 void orl(Register dst, Register src);
1211 void orq(Address dst, int32_t imm32);
1212 void orq(Register dst, int32_t imm32);
1213 void orq(Register dst, Address src);
1214 void orq(Register dst, Register src);
1216 void popl(Address dst);
1218 #ifdef _LP64
1219 void popq(Address dst);
1220 #endif
1222 // Prefetches (SSE, SSE2, 3DNOW only)
1224 void prefetchnta(Address src);
1225 void prefetchr(Address src);
1226 void prefetcht0(Address src);
1227 void prefetcht1(Address src);
1228 void prefetcht2(Address src);
1229 void prefetchw(Address src);
1231 // Shuffle Packed Doublewords
1232 void pshufd(XMMRegister dst, XMMRegister src, int mode);
1233 void pshufd(XMMRegister dst, Address src, int mode);
1235 // Shuffle Packed Low Words
1236 void pshuflw(XMMRegister dst, XMMRegister src, int mode);
1237 void pshuflw(XMMRegister dst, Address src, int mode);
1239 // Shift Right Logical Quadword Immediate
1240 void psrlq(XMMRegister dst, int shift);
1242 // Interleave Low Bytes
1243 void punpcklbw(XMMRegister dst, XMMRegister src);
1245 void pushl(Address src);
1247 void pushq(Address src);
1249 // Xor Packed Byte Integer Values
1250 void pxor(XMMRegister dst, Address src);
1251 void pxor(XMMRegister dst, XMMRegister src);
1253 void rcll(Register dst, int imm8);
1255 void rclq(Register dst, int imm8);
1257 void ret(int imm16);
1259 void sahf();
1261 void sarl(Register dst, int imm8);
1262 void sarl(Register dst);
1264 void sarq(Register dst, int imm8);
1265 void sarq(Register dst);
1267 void sbbl(Address dst, int32_t imm32);
1268 void sbbl(Register dst, int32_t imm32);
1269 void sbbl(Register dst, Address src);
1270 void sbbl(Register dst, Register src);
1272 void sbbq(Address dst, int32_t imm32);
1273 void sbbq(Register dst, int32_t imm32);
1274 void sbbq(Register dst, Address src);
1275 void sbbq(Register dst, Register src);
1277 void setb(Condition cc, Register dst);
1279 void shldl(Register dst, Register src);
1281 void shll(Register dst, int imm8);
1282 void shll(Register dst);
1284 void shlq(Register dst, int imm8);
1285 void shlq(Register dst);
1287 void shrdl(Register dst, Register src);
1289 void shrl(Register dst, int imm8);
1290 void shrl(Register dst);
1292 void shrq(Register dst, int imm8);
1293 void shrq(Register dst);
1295 void smovl(); // QQQ generic?
1297 // Compute Square Root of Scalar Double-Precision Floating-Point Value
1298 void sqrtsd(XMMRegister dst, Address src);
1299 void sqrtsd(XMMRegister dst, XMMRegister src);
1301 void std() { emit_byte(0xfd); }
1303 void stmxcsr( Address dst );
1305 void subl(Address dst, int32_t imm32);
1306 void subl(Address dst, Register src);
1307 void subl(Register dst, int32_t imm32);
1308 void subl(Register dst, Address src);
1309 void subl(Register dst, Register src);
1311 void subq(Address dst, int32_t imm32);
1312 void subq(Address dst, Register src);
1313 void subq(Register dst, int32_t imm32);
1314 void subq(Register dst, Address src);
1315 void subq(Register dst, Register src);
1318 // Subtract Scalar Double-Precision Floating-Point Values
1319 void subsd(XMMRegister dst, Address src);
1320 void subsd(XMMRegister dst, XMMRegister src);
1322 // Subtract Scalar Single-Precision Floating-Point Values
1323 void subss(XMMRegister dst, Address src);
1324 void subss(XMMRegister dst, XMMRegister src);
1326 void testb(Register dst, int imm8);
1328 void testl(Register dst, int32_t imm32);
1329 void testl(Register dst, Register src);
1330 void testl(Register dst, Address src);
1332 void testq(Register dst, int32_t imm32);
1333 void testq(Register dst, Register src);
1336 // Unordered Compare Scalar Double-Precision Floating-Point Values and set EFLAGS
1337 void ucomisd(XMMRegister dst, Address src);
1338 void ucomisd(XMMRegister dst, XMMRegister src);
1340 // Unordered Compare Scalar Single-Precision Floating-Point Values and set EFLAGS
1341 void ucomiss(XMMRegister dst, Address src);
1342 void ucomiss(XMMRegister dst, XMMRegister src);
1344 void xaddl(Address dst, Register src);
1346 void xaddq(Address dst, Register src);
1348 void xchgl(Register reg, Address adr);
1349 void xchgl(Register dst, Register src);
1351 void xchgq(Register reg, Address adr);
1352 void xchgq(Register dst, Register src);
1354 void xorl(Register dst, int32_t imm32);
1355 void xorl(Register dst, Address src);
1356 void xorl(Register dst, Register src);
1358 void xorq(Register dst, Address src);
1359 void xorq(Register dst, Register src);
1361 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
1362 void xorpd(XMMRegister dst, Address src);
1363 void xorpd(XMMRegister dst, XMMRegister src);
1365 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
1366 void xorps(XMMRegister dst, Address src);
1367 void xorps(XMMRegister dst, XMMRegister src);
1369 void set_byte_if_not_zero(Register dst); // sets reg to 1 if not zero, otherwise 0
1370 };
1373 // MacroAssembler extends Assembler by frequently used macros.
1374 //
1375 // Instructions for which a 'better' code sequence exists depending
1376 // on arguments should also go in here.
1378 class MacroAssembler: public Assembler {
1379 friend class LIR_Assembler;
1380 friend class Runtime1; // as_Address()
1381 protected:
1383 Address as_Address(AddressLiteral adr);
1384 Address as_Address(ArrayAddress adr);
1386 // Support for VM calls
1387 //
1388 // This is the base routine called by the different versions of call_VM_leaf. The interpreter
1389 // may customize this version by overriding it for its purposes (e.g., to save/restore
1390 // additional registers when doing a VM call).
1391 #ifdef CC_INTERP
1392 // c++ interpreter never wants to use interp_masm version of call_VM
1393 #define VIRTUAL
1394 #else
1395 #define VIRTUAL virtual
1396 #endif
1398 VIRTUAL void call_VM_leaf_base(
1399 address entry_point, // the entry point
1400 int number_of_arguments // the number of arguments to pop after the call
1401 );
1403 // This is the base routine called by the different versions of call_VM. The interpreter
1404 // may customize this version by overriding it for its purposes (e.g., to save/restore
1405 // additional registers when doing a VM call).
1406 //
1407 // If no java_thread register is specified (noreg) than rdi will be used instead. call_VM_base
1408 // returns the register which contains the thread upon return. If a thread register has been
1409 // specified, the return value will correspond to that register. If no last_java_sp is specified
1410 // (noreg) than rsp will be used instead.
1411 VIRTUAL void call_VM_base( // returns the register containing the thread upon return
1412 Register oop_result, // where an oop-result ends up if any; use noreg otherwise
1413 Register java_thread, // the thread if computed before ; use noreg otherwise
1414 Register last_java_sp, // to set up last_Java_frame in stubs; use noreg otherwise
1415 address entry_point, // the entry point
1416 int number_of_arguments, // the number of arguments (w/o thread) to pop after the call
1417 bool check_exceptions // whether to check for pending exceptions after return
1418 );
1420 // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
1421 // The implementation is only non-empty for the InterpreterMacroAssembler,
1422 // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
1423 virtual void check_and_handle_popframe(Register java_thread);
1424 virtual void check_and_handle_earlyret(Register java_thread);
1426 void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
1428 // helpers for FPU flag access
1429 // tmp is a temporary register, if none is available use noreg
1430 void save_rax (Register tmp);
1431 void restore_rax(Register tmp);
1433 public:
1434 MacroAssembler(CodeBuffer* code) : Assembler(code) {}
1436 // Support for NULL-checks
1437 //
1438 // Generates code that causes a NULL OS exception if the content of reg is NULL.
1439 // If the accessed location is M[reg + offset] and the offset is known, provide the
1440 // offset. No explicit code generation is needed if the offset is within a certain
1441 // range (0 <= offset <= page_size).
1443 void null_check(Register reg, int offset = -1);
1444 static bool needs_explicit_null_check(intptr_t offset);
1446 // Required platform-specific helpers for Label::patch_instructions.
1447 // They _shadow_ the declarations in AbstractAssembler, which are undefined.
1448 void pd_patch_instruction(address branch, address target);
1449 #ifndef PRODUCT
1450 static void pd_print_patched_instruction(address branch);
1451 #endif
1453 // The following 4 methods return the offset of the appropriate move instruction
1455 // Support for fast byte/short loading with zero extension (depending on particular CPU)
1456 int load_unsigned_byte(Register dst, Address src);
1457 int load_unsigned_short(Register dst, Address src);
1459 // Support for fast byte/short loading with sign extension (depending on particular CPU)
1460 int load_signed_byte(Register dst, Address src);
1461 int load_signed_short(Register dst, Address src);
1463 // Support for sign-extension (hi:lo = extend_sign(lo))
1464 void extend_sign(Register hi, Register lo);
1466 // Loading values by size and signed-ness
1467 void load_sized_value(Register dst, Address src, int size_in_bytes, bool is_signed);
1469 // Support for inc/dec with optimal instruction selection depending on value
1471 void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
1472 void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
1474 void decrementl(Address dst, int value = 1);
1475 void decrementl(Register reg, int value = 1);
1477 void decrementq(Register reg, int value = 1);
1478 void decrementq(Address dst, int value = 1);
1480 void incrementl(Address dst, int value = 1);
1481 void incrementl(Register reg, int value = 1);
1483 void incrementq(Register reg, int value = 1);
1484 void incrementq(Address dst, int value = 1);
1487 // Support optimal SSE move instructions.
1488 void movflt(XMMRegister dst, XMMRegister src) {
1489 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; }
1490 else { movss (dst, src); return; }
1491 }
1492 void movflt(XMMRegister dst, Address src) { movss(dst, src); }
1493 void movflt(XMMRegister dst, AddressLiteral src);
1494 void movflt(Address dst, XMMRegister src) { movss(dst, src); }
1496 void movdbl(XMMRegister dst, XMMRegister src) {
1497 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; }
1498 else { movsd (dst, src); return; }
1499 }
1501 void movdbl(XMMRegister dst, AddressLiteral src);
1503 void movdbl(XMMRegister dst, Address src) {
1504 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; }
1505 else { movlpd(dst, src); return; }
1506 }
1507 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); }
1509 void incrementl(AddressLiteral dst);
1510 void incrementl(ArrayAddress dst);
1512 // Alignment
1513 void align(int modulus);
1515 // Misc
1516 void fat_nop(); // 5 byte nop
1518 // Stack frame creation/removal
1519 void enter();
1520 void leave();
1522 // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
1523 // The pointer will be loaded into the thread register.
1524 void get_thread(Register thread);
1527 // Support for VM calls
1528 //
1529 // It is imperative that all calls into the VM are handled via the call_VM macros.
1530 // They make sure that the stack linkage is setup correctly. call_VM's correspond
1531 // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
1534 void call_VM(Register oop_result,
1535 address entry_point,
1536 bool check_exceptions = true);
1537 void call_VM(Register oop_result,
1538 address entry_point,
1539 Register arg_1,
1540 bool check_exceptions = true);
1541 void call_VM(Register oop_result,
1542 address entry_point,
1543 Register arg_1, Register arg_2,
1544 bool check_exceptions = true);
1545 void call_VM(Register oop_result,
1546 address entry_point,
1547 Register arg_1, Register arg_2, Register arg_3,
1548 bool check_exceptions = true);
1550 // Overloadings with last_Java_sp
1551 void call_VM(Register oop_result,
1552 Register last_java_sp,
1553 address entry_point,
1554 int number_of_arguments = 0,
1555 bool check_exceptions = true);
1556 void call_VM(Register oop_result,
1557 Register last_java_sp,
1558 address entry_point,
1559 Register arg_1, bool
1560 check_exceptions = true);
1561 void call_VM(Register oop_result,
1562 Register last_java_sp,
1563 address entry_point,
1564 Register arg_1, Register arg_2,
1565 bool check_exceptions = true);
1566 void call_VM(Register oop_result,
1567 Register last_java_sp,
1568 address entry_point,
1569 Register arg_1, Register arg_2, Register arg_3,
1570 bool check_exceptions = true);
1572 void call_VM_leaf(address entry_point,
1573 int number_of_arguments = 0);
1574 void call_VM_leaf(address entry_point,
1575 Register arg_1);
1576 void call_VM_leaf(address entry_point,
1577 Register arg_1, Register arg_2);
1578 void call_VM_leaf(address entry_point,
1579 Register arg_1, Register arg_2, Register arg_3);
1581 // last Java Frame (fills frame anchor)
1582 void set_last_Java_frame(Register thread,
1583 Register last_java_sp,
1584 Register last_java_fp,
1585 address last_java_pc);
1587 // thread in the default location (r15_thread on 64bit)
1588 void set_last_Java_frame(Register last_java_sp,
1589 Register last_java_fp,
1590 address last_java_pc);
1592 void reset_last_Java_frame(Register thread, bool clear_fp, bool clear_pc);
1594 // thread in the default location (r15_thread on 64bit)
1595 void reset_last_Java_frame(bool clear_fp, bool clear_pc);
1597 // Stores
1598 void store_check(Register obj); // store check for obj - register is destroyed afterwards
1599 void store_check(Register obj, Address dst); // same as above, dst is exact store location (reg. is destroyed)
1601 void g1_write_barrier_pre(Register obj,
1602 #ifndef _LP64
1603 Register thread,
1604 #endif
1605 Register tmp,
1606 Register tmp2,
1607 bool tosca_live);
1608 void g1_write_barrier_post(Register store_addr,
1609 Register new_val,
1610 #ifndef _LP64
1611 Register thread,
1612 #endif
1613 Register tmp,
1614 Register tmp2);
1617 // split store_check(Register obj) to enhance instruction interleaving
1618 void store_check_part_1(Register obj);
1619 void store_check_part_2(Register obj);
1621 // C 'boolean' to Java boolean: x == 0 ? 0 : 1
1622 void c2bool(Register x);
1624 // C++ bool manipulation
1626 void movbool(Register dst, Address src);
1627 void movbool(Address dst, bool boolconst);
1628 void movbool(Address dst, Register src);
1629 void testbool(Register dst);
1631 // oop manipulations
1632 void load_klass(Register dst, Register src);
1633 void store_klass(Register dst, Register src);
1635 void load_prototype_header(Register dst, Register src);
1637 #ifdef _LP64
1638 void store_klass_gap(Register dst, Register src);
1640 void load_heap_oop(Register dst, Address src);
1641 void store_heap_oop(Address dst, Register src);
1642 void encode_heap_oop(Register r);
1643 void decode_heap_oop(Register r);
1644 void encode_heap_oop_not_null(Register r);
1645 void decode_heap_oop_not_null(Register r);
1646 void encode_heap_oop_not_null(Register dst, Register src);
1647 void decode_heap_oop_not_null(Register dst, Register src);
1649 void set_narrow_oop(Register dst, jobject obj);
1651 // if heap base register is used - reinit it with the correct value
1652 void reinit_heapbase();
1653 #endif // _LP64
1655 // Int division/remainder for Java
1656 // (as idivl, but checks for special case as described in JVM spec.)
1657 // returns idivl instruction offset for implicit exception handling
1658 int corrected_idivl(Register reg);
1660 // Long division/remainder for Java
1661 // (as idivq, but checks for special case as described in JVM spec.)
1662 // returns idivq instruction offset for implicit exception handling
1663 int corrected_idivq(Register reg);
1665 void int3();
1667 // Long operation macros for a 32bit cpu
1668 // Long negation for Java
1669 void lneg(Register hi, Register lo);
1671 // Long multiplication for Java
1672 // (destroys contents of eax, ebx, ecx and edx)
1673 void lmul(int x_rsp_offset, int y_rsp_offset); // rdx:rax = x * y
1675 // Long shifts for Java
1676 // (semantics as described in JVM spec.)
1677 void lshl(Register hi, Register lo); // hi:lo << (rcx & 0x3f)
1678 void lshr(Register hi, Register lo, bool sign_extension = false); // hi:lo >> (rcx & 0x3f)
1680 // Long compare for Java
1681 // (semantics as described in JVM spec.)
1682 void lcmp2int(Register x_hi, Register x_lo, Register y_hi, Register y_lo); // x_hi = lcmp(x, y)
1685 // misc
1687 // Sign extension
1688 void sign_extend_short(Register reg);
1689 void sign_extend_byte(Register reg);
1691 // Division by power of 2, rounding towards 0
1692 void division_with_shift(Register reg, int shift_value);
1694 // Compares the top-most stack entries on the FPU stack and sets the eflags as follows:
1695 //
1696 // CF (corresponds to C0) if x < y
1697 // PF (corresponds to C2) if unordered
1698 // ZF (corresponds to C3) if x = y
1699 //
1700 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
1701 // tmp is a temporary register, if none is available use noreg (only matters for non-P6 code)
1702 void fcmp(Register tmp);
1703 // Variant of the above which allows y to be further down the stack
1704 // and which only pops x and y if specified. If pop_right is
1705 // specified then pop_left must also be specified.
1706 void fcmp(Register tmp, int index, bool pop_left, bool pop_right);
1708 // Floating-point comparison for Java
1709 // Compares the top-most stack entries on the FPU stack and stores the result in dst.
1710 // The arguments are in reversed order on the stack (i.e., top of stack is first argument).
1711 // (semantics as described in JVM spec.)
1712 void fcmp2int(Register dst, bool unordered_is_less);
1713 // Variant of the above which allows y to be further down the stack
1714 // and which only pops x and y if specified. If pop_right is
1715 // specified then pop_left must also be specified.
1716 void fcmp2int(Register dst, bool unordered_is_less, int index, bool pop_left, bool pop_right);
1718 // Floating-point remainder for Java (ST0 = ST0 fremr ST1, ST1 is empty afterwards)
1719 // tmp is a temporary register, if none is available use noreg
1720 void fremr(Register tmp);
1723 // same as fcmp2int, but using SSE2
1724 void cmpss2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
1725 void cmpsd2int(XMMRegister opr1, XMMRegister opr2, Register dst, bool unordered_is_less);
1727 // Inlined sin/cos generator for Java; must not use CPU instruction
1728 // directly on Intel as it does not have high enough precision
1729 // outside of the range [-pi/4, pi/4]. Extra argument indicate the
1730 // number of FPU stack slots in use; all but the topmost will
1731 // require saving if a slow case is necessary. Assumes argument is
1732 // on FP TOS; result is on FP TOS. No cpu registers are changed by
1733 // this code.
1734 void trigfunc(char trig, int num_fpu_regs_in_use = 1);
1736 // branch to L if FPU flag C2 is set/not set
1737 // tmp is a temporary register, if none is available use noreg
1738 void jC2 (Register tmp, Label& L);
1739 void jnC2(Register tmp, Label& L);
1741 // Pop ST (ffree & fincstp combined)
1742 void fpop();
1744 // pushes double TOS element of FPU stack on CPU stack; pops from FPU stack
1745 void push_fTOS();
1747 // pops double TOS element from CPU stack and pushes on FPU stack
1748 void pop_fTOS();
1750 void empty_FPU_stack();
1752 void push_IU_state();
1753 void pop_IU_state();
1755 void push_FPU_state();
1756 void pop_FPU_state();
1758 void push_CPU_state();
1759 void pop_CPU_state();
1761 // Round up to a power of two
1762 void round_to(Register reg, int modulus);
1764 // Callee saved registers handling
1765 void push_callee_saved_registers();
1766 void pop_callee_saved_registers();
1768 // allocation
1769 void eden_allocate(
1770 Register obj, // result: pointer to object after successful allocation
1771 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1772 int con_size_in_bytes, // object size in bytes if known at compile time
1773 Register t1, // temp register
1774 Label& slow_case // continuation point if fast allocation fails
1775 );
1776 void tlab_allocate(
1777 Register obj, // result: pointer to object after successful allocation
1778 Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1779 int con_size_in_bytes, // object size in bytes if known at compile time
1780 Register t1, // temp register
1781 Register t2, // temp register
1782 Label& slow_case // continuation point if fast allocation fails
1783 );
1784 void tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case);
1786 // interface method calling
1787 void lookup_interface_method(Register recv_klass,
1788 Register intf_klass,
1789 RegisterConstant itable_index,
1790 Register method_result,
1791 Register scan_temp,
1792 Label& no_such_interface);
1794 //----
1795 void set_word_if_not_zero(Register reg); // sets reg to 1 if not zero, otherwise 0
1797 // Debugging
1799 // only if +VerifyOops
1800 void verify_oop(Register reg, const char* s = "broken oop");
1801 void verify_oop_addr(Address addr, const char * s = "broken oop addr");
1803 // only if +VerifyFPU
1804 void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
1806 // prints msg, dumps registers and stops execution
1807 void stop(const char* msg);
1809 // prints msg and continues
1810 void warn(const char* msg);
1812 static void debug32(int rdi, int rsi, int rbp, int rsp, int rbx, int rdx, int rcx, int rax, int eip, char* msg);
1813 static void debug64(char* msg, int64_t pc, int64_t regs[]);
1815 void os_breakpoint();
1817 void untested() { stop("untested"); }
1819 void unimplemented(const char* what = "") { char* b = new char[1024]; jio_snprintf(b, sizeof(b), "unimplemented: %s", what); stop(b); }
1821 void should_not_reach_here() { stop("should not reach here"); }
1823 void print_CPU_state();
1825 // Stack overflow checking
1826 void bang_stack_with_offset(int offset) {
1827 // stack grows down, caller passes positive offset
1828 assert(offset > 0, "must bang with negative offset");
1829 movl(Address(rsp, (-offset)), rax);
1830 }
1832 // Writes to stack successive pages until offset reached to check for
1833 // stack overflow + shadow pages. Also, clobbers tmp
1834 void bang_stack_size(Register size, Register tmp);
1836 virtual RegisterConstant delayed_value(intptr_t* delayed_value_addr,
1837 Register tmp,
1838 int offset);
1840 // Support for serializing memory accesses between threads
1841 void serialize_memory(Register thread, Register tmp);
1843 void verify_tlab();
1845 // Biased locking support
1846 // lock_reg and obj_reg must be loaded up with the appropriate values.
1847 // swap_reg must be rax, and is killed.
1848 // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
1849 // be killed; if not supplied, push/pop will be used internally to
1850 // allocate a temporary (inefficient, avoid if possible).
1851 // Optional slow case is for implementations (interpreter and C1) which branch to
1852 // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
1853 // Returns offset of first potentially-faulting instruction for null
1854 // check info (currently consumed only by C1). If
1855 // swap_reg_contains_mark is true then returns -1 as it is assumed
1856 // the calling code has already passed any potential faults.
1857 int biased_locking_enter(Register lock_reg, Register obj_reg,
1858 Register swap_reg, Register tmp_reg,
1859 bool swap_reg_contains_mark,
1860 Label& done, Label* slow_case = NULL,
1861 BiasedLockingCounters* counters = NULL);
1862 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
1865 Condition negate_condition(Condition cond);
1867 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit
1868 // operands. In general the names are modified to avoid hiding the instruction in Assembler
1869 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers
1870 // here in MacroAssembler. The major exception to this rule is call
1872 // Arithmetics
1875 void addptr(Address dst, int32_t src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)) ; }
1876 void addptr(Address dst, Register src);
1878 void addptr(Register dst, Address src) { LP64_ONLY(addq(dst, src)) NOT_LP64(addl(dst, src)); }
1879 void addptr(Register dst, int32_t src);
1880 void addptr(Register dst, Register src);
1882 void andptr(Register dst, int32_t src);
1883 void andptr(Register src1, Register src2) { LP64_ONLY(andq(src1, src2)) NOT_LP64(andl(src1, src2)) ; }
1885 void cmp8(AddressLiteral src1, int imm);
1887 // renamed to drag out the casting of address to int32_t/intptr_t
1888 void cmp32(Register src1, int32_t imm);
1890 void cmp32(AddressLiteral src1, int32_t imm);
1891 // compare reg - mem, or reg - &mem
1892 void cmp32(Register src1, AddressLiteral src2);
1894 void cmp32(Register src1, Address src2);
1896 #ifndef _LP64
1897 void cmpoop(Address dst, jobject obj);
1898 void cmpoop(Register dst, jobject obj);
1899 #endif // _LP64
1901 // NOTE src2 must be the lval. This is NOT an mem-mem compare
1902 void cmpptr(Address src1, AddressLiteral src2);
1904 void cmpptr(Register src1, AddressLiteral src2);
1906 void cmpptr(Register src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
1907 void cmpptr(Register src1, Address src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
1908 // void cmpptr(Address src1, Register src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
1910 void cmpptr(Register src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
1911 void cmpptr(Address src1, int32_t src2) { LP64_ONLY(cmpq(src1, src2)) NOT_LP64(cmpl(src1, src2)) ; }
1913 // cmp64 to avoild hiding cmpq
1914 void cmp64(Register src1, AddressLiteral src);
1916 void cmpxchgptr(Register reg, Address adr);
1918 void locked_cmpxchgptr(Register reg, AddressLiteral adr);
1921 void imulptr(Register dst, Register src) { LP64_ONLY(imulq(dst, src)) NOT_LP64(imull(dst, src)); }
1924 void negptr(Register dst) { LP64_ONLY(negq(dst)) NOT_LP64(negl(dst)); }
1926 void notptr(Register dst) { LP64_ONLY(notq(dst)) NOT_LP64(notl(dst)); }
1928 void shlptr(Register dst, int32_t shift);
1929 void shlptr(Register dst) { LP64_ONLY(shlq(dst)) NOT_LP64(shll(dst)); }
1931 void shrptr(Register dst, int32_t shift);
1932 void shrptr(Register dst) { LP64_ONLY(shrq(dst)) NOT_LP64(shrl(dst)); }
1934 void sarptr(Register dst) { LP64_ONLY(sarq(dst)) NOT_LP64(sarl(dst)); }
1935 void sarptr(Register dst, int32_t src) { LP64_ONLY(sarq(dst, src)) NOT_LP64(sarl(dst, src)); }
1937 void subptr(Address dst, int32_t src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
1939 void subptr(Register dst, Address src) { LP64_ONLY(subq(dst, src)) NOT_LP64(subl(dst, src)); }
1940 void subptr(Register dst, int32_t src);
1941 void subptr(Register dst, Register src);
1944 void sbbptr(Address dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
1945 void sbbptr(Register dst, int32_t src) { LP64_ONLY(sbbq(dst, src)) NOT_LP64(sbbl(dst, src)); }
1947 void xchgptr(Register src1, Register src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
1948 void xchgptr(Register src1, Address src2) { LP64_ONLY(xchgq(src1, src2)) NOT_LP64(xchgl(src1, src2)) ; }
1950 void xaddptr(Address src1, Register src2) { LP64_ONLY(xaddq(src1, src2)) NOT_LP64(xaddl(src1, src2)) ; }
1954 // Helper functions for statistics gathering.
1955 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes.
1956 void cond_inc32(Condition cond, AddressLiteral counter_addr);
1957 // Unconditional atomic increment.
1958 void atomic_incl(AddressLiteral counter_addr);
1960 void lea(Register dst, AddressLiteral adr);
1961 void lea(Address dst, AddressLiteral adr);
1962 void lea(Register dst, Address adr) { Assembler::lea(dst, adr); }
1964 void leal32(Register dst, Address src) { leal(dst, src); }
1966 void test32(Register src1, AddressLiteral src2);
1968 void orptr(Register dst, Address src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
1969 void orptr(Register dst, Register src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
1970 void orptr(Register dst, int32_t src) { LP64_ONLY(orq(dst, src)) NOT_LP64(orl(dst, src)); }
1972 void testptr(Register src, int32_t imm32) { LP64_ONLY(testq(src, imm32)) NOT_LP64(testl(src, imm32)); }
1973 void testptr(Register src1, Register src2);
1975 void xorptr(Register dst, Register src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
1976 void xorptr(Register dst, Address src) { LP64_ONLY(xorq(dst, src)) NOT_LP64(xorl(dst, src)); }
1978 // Calls
1980 void call(Label& L, relocInfo::relocType rtype);
1981 void call(Register entry);
1983 // NOTE: this call tranfers to the effective address of entry NOT
1984 // the address contained by entry. This is because this is more natural
1985 // for jumps/calls.
1986 void call(AddressLiteral entry);
1988 // Jumps
1990 // NOTE: these jumps tranfer to the effective address of dst NOT
1991 // the address contained by dst. This is because this is more natural
1992 // for jumps/calls.
1993 void jump(AddressLiteral dst);
1994 void jump_cc(Condition cc, AddressLiteral dst);
1996 // 32bit can do a case table jump in one instruction but we no longer allow the base
1997 // to be installed in the Address class. This jump will tranfers to the address
1998 // contained in the location described by entry (not the address of entry)
1999 void jump(ArrayAddress entry);
2001 // Floating
2003 void andpd(XMMRegister dst, Address src) { Assembler::andpd(dst, src); }
2004 void andpd(XMMRegister dst, AddressLiteral src);
2006 void comiss(XMMRegister dst, Address src) { Assembler::comiss(dst, src); }
2007 void comiss(XMMRegister dst, AddressLiteral src);
2009 void comisd(XMMRegister dst, Address src) { Assembler::comisd(dst, src); }
2010 void comisd(XMMRegister dst, AddressLiteral src);
2012 void fldcw(Address src) { Assembler::fldcw(src); }
2013 void fldcw(AddressLiteral src);
2015 void fld_s(int index) { Assembler::fld_s(index); }
2016 void fld_s(Address src) { Assembler::fld_s(src); }
2017 void fld_s(AddressLiteral src);
2019 void fld_d(Address src) { Assembler::fld_d(src); }
2020 void fld_d(AddressLiteral src);
2022 void fld_x(Address src) { Assembler::fld_x(src); }
2023 void fld_x(AddressLiteral src);
2025 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); }
2026 void ldmxcsr(AddressLiteral src);
2028 private:
2029 // these are private because users should be doing movflt/movdbl
2031 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); }
2032 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); }
2033 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); }
2034 void movss(XMMRegister dst, AddressLiteral src);
2036 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); }
2037 void movlpd(XMMRegister dst, AddressLiteral src);
2039 public:
2041 void movsd(XMMRegister dst, XMMRegister src) { Assembler::movsd(dst, src); }
2042 void movsd(Address dst, XMMRegister src) { Assembler::movsd(dst, src); }
2043 void movsd(XMMRegister dst, Address src) { Assembler::movsd(dst, src); }
2044 void movsd(XMMRegister dst, AddressLiteral src);
2046 void ucomiss(XMMRegister dst, XMMRegister src) { Assembler::ucomiss(dst, src); }
2047 void ucomiss(XMMRegister dst, Address src) { Assembler::ucomiss(dst, src); }
2048 void ucomiss(XMMRegister dst, AddressLiteral src);
2050 void ucomisd(XMMRegister dst, XMMRegister src) { Assembler::ucomisd(dst, src); }
2051 void ucomisd(XMMRegister dst, Address src) { Assembler::ucomisd(dst, src); }
2052 void ucomisd(XMMRegister dst, AddressLiteral src);
2054 // Bitwise Logical XOR of Packed Double-Precision Floating-Point Values
2055 void xorpd(XMMRegister dst, XMMRegister src) { Assembler::xorpd(dst, src); }
2056 void xorpd(XMMRegister dst, Address src) { Assembler::xorpd(dst, src); }
2057 void xorpd(XMMRegister dst, AddressLiteral src);
2059 // Bitwise Logical XOR of Packed Single-Precision Floating-Point Values
2060 void xorps(XMMRegister dst, XMMRegister src) { Assembler::xorps(dst, src); }
2061 void xorps(XMMRegister dst, Address src) { Assembler::xorps(dst, src); }
2062 void xorps(XMMRegister dst, AddressLiteral src);
2064 // Data
2066 void cmov(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2068 void cmovptr(Condition cc, Register dst, Address src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2069 void cmovptr(Condition cc, Register dst, Register src) { LP64_ONLY(cmovq(cc, dst, src)) NOT_LP64(cmovl(cc, dst, src)); }
2071 void movoop(Register dst, jobject obj);
2072 void movoop(Address dst, jobject obj);
2074 void movptr(ArrayAddress dst, Register src);
2075 // can this do an lea?
2076 void movptr(Register dst, ArrayAddress src);
2078 void movptr(Register dst, Address src);
2080 void movptr(Register dst, AddressLiteral src);
2082 void movptr(Register dst, intptr_t src);
2083 void movptr(Register dst, Register src);
2084 void movptr(Address dst, intptr_t src);
2086 void movptr(Address dst, Register src);
2088 #ifdef _LP64
2089 // Generally the next two are only used for moving NULL
2090 // Although there are situations in initializing the mark word where
2091 // they could be used. They are dangerous.
2093 // They only exist on LP64 so that int32_t and intptr_t are not the same
2094 // and we have ambiguous declarations.
2096 void movptr(Address dst, int32_t imm32);
2097 void movptr(Register dst, int32_t imm32);
2098 #endif // _LP64
2100 // to avoid hiding movl
2101 void mov32(AddressLiteral dst, Register src);
2102 void mov32(Register dst, AddressLiteral src);
2104 // to avoid hiding movb
2105 void movbyte(ArrayAddress dst, int src);
2107 // Can push value or effective address
2108 void pushptr(AddressLiteral src);
2110 void pushptr(Address src) { LP64_ONLY(pushq(src)) NOT_LP64(pushl(src)); }
2111 void popptr(Address src) { LP64_ONLY(popq(src)) NOT_LP64(popl(src)); }
2113 void pushoop(jobject obj);
2115 // sign extend as need a l to ptr sized element
2116 void movl2ptr(Register dst, Address src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(movl(dst, src)); }
2117 void movl2ptr(Register dst, Register src) { LP64_ONLY(movslq(dst, src)) NOT_LP64(if (dst != src) movl(dst, src)); }
2120 #undef VIRTUAL
2122 };
2124 /**
2125 * class SkipIfEqual:
2126 *
2127 * Instantiating this class will result in assembly code being output that will
2128 * jump around any code emitted between the creation of the instance and it's
2129 * automatic destruction at the end of a scope block, depending on the value of
2130 * the flag passed to the constructor, which will be checked at run-time.
2131 */
2132 class SkipIfEqual {
2133 private:
2134 MacroAssembler* _masm;
2135 Label _label;
2137 public:
2138 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
2139 ~SkipIfEqual();
2140 };
2142 #ifdef ASSERT
2143 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; }
2144 #endif