Mercurial > hg > graal-compiler
comparison src/cpu/x86/vm/assembler_x86_64.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 3d62cb85208d |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:a61af66fc99e |
---|---|
1 /* | |
2 * Copyright 2003-2007 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 */ | |
24 | |
25 class BiasedLockingCounters; | |
26 | |
27 // Contains all the definitions needed for amd64 assembly code generation. | |
28 | |
29 #ifdef _LP64 | |
30 // Calling convention | |
31 class Argument VALUE_OBJ_CLASS_SPEC { | |
32 public: | |
33 enum { | |
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 | |
41 n_int_register_parameters_j = 6, // j_rarg0, j_rarg1, ... | |
42 n_float_register_parameters_j = 8 // j_farg0, j_farg1, ... | |
43 }; | |
44 }; | |
45 | |
46 | |
47 // Symbolically name the register arguments used by the c calling convention. | |
48 // Windows is different from linux/solaris. So much for standards... | |
49 | |
50 #ifdef _WIN64 | |
51 | |
52 REGISTER_DECLARATION(Register, c_rarg0, rcx); | |
53 REGISTER_DECLARATION(Register, c_rarg1, rdx); | |
54 REGISTER_DECLARATION(Register, c_rarg2, r8); | |
55 REGISTER_DECLARATION(Register, c_rarg3, r9); | |
56 | |
57 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0); | |
58 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1); | |
59 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2); | |
60 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3); | |
61 | |
62 #else | |
63 | |
64 REGISTER_DECLARATION(Register, c_rarg0, rdi); | |
65 REGISTER_DECLARATION(Register, c_rarg1, rsi); | |
66 REGISTER_DECLARATION(Register, c_rarg2, rdx); | |
67 REGISTER_DECLARATION(Register, c_rarg3, rcx); | |
68 REGISTER_DECLARATION(Register, c_rarg4, r8); | |
69 REGISTER_DECLARATION(Register, c_rarg5, r9); | |
70 | |
71 REGISTER_DECLARATION(XMMRegister, c_farg0, xmm0); | |
72 REGISTER_DECLARATION(XMMRegister, c_farg1, xmm1); | |
73 REGISTER_DECLARATION(XMMRegister, c_farg2, xmm2); | |
74 REGISTER_DECLARATION(XMMRegister, c_farg3, xmm3); | |
75 REGISTER_DECLARATION(XMMRegister, c_farg4, xmm4); | |
76 REGISTER_DECLARATION(XMMRegister, c_farg5, xmm5); | |
77 REGISTER_DECLARATION(XMMRegister, c_farg6, xmm6); | |
78 REGISTER_DECLARATION(XMMRegister, c_farg7, xmm7); | |
79 | |
80 #endif | |
81 | |
82 // Symbolically name the register arguments used by the Java calling convention. | |
83 // We have control over the convention for java so we can do what we please. | |
84 // What pleases us is to offset the java calling convention so that when | |
85 // we call a suitable jni method the arguments are lined up and we don't | |
86 // have to do little shuffling. A suitable jni method is non-static and a | |
87 // small number of arguments (two fewer args on windows) | |
88 // | |
89 // |-------------------------------------------------------| | |
90 // | c_rarg0 c_rarg1 c_rarg2 c_rarg3 c_rarg4 c_rarg5 | | |
91 // |-------------------------------------------------------| | |
92 // | rcx rdx r8 r9 rdi* rsi* | windows (* not a c_rarg) | |
93 // | rdi rsi rdx rcx r8 r9 | solaris/linux | |
94 // |-------------------------------------------------------| | |
95 // | j_rarg5 j_rarg0 j_rarg1 j_rarg2 j_rarg3 j_rarg4 | | |
96 // |-------------------------------------------------------| | |
97 | |
98 REGISTER_DECLARATION(Register, j_rarg0, c_rarg1); | |
99 REGISTER_DECLARATION(Register, j_rarg1, c_rarg2); | |
100 REGISTER_DECLARATION(Register, j_rarg2, c_rarg3); | |
101 // Windows runs out of register args here | |
102 #ifdef _WIN64 | |
103 REGISTER_DECLARATION(Register, j_rarg3, rdi); | |
104 REGISTER_DECLARATION(Register, j_rarg4, rsi); | |
105 #else | |
106 REGISTER_DECLARATION(Register, j_rarg3, c_rarg4); | |
107 REGISTER_DECLARATION(Register, j_rarg4, c_rarg5); | |
108 #endif /* _WIN64 */ | |
109 REGISTER_DECLARATION(Register, j_rarg5, c_rarg0); | |
110 | |
111 REGISTER_DECLARATION(XMMRegister, j_farg0, xmm0); | |
112 REGISTER_DECLARATION(XMMRegister, j_farg1, xmm1); | |
113 REGISTER_DECLARATION(XMMRegister, j_farg2, xmm2); | |
114 REGISTER_DECLARATION(XMMRegister, j_farg3, xmm3); | |
115 REGISTER_DECLARATION(XMMRegister, j_farg4, xmm4); | |
116 REGISTER_DECLARATION(XMMRegister, j_farg5, xmm5); | |
117 REGISTER_DECLARATION(XMMRegister, j_farg6, xmm6); | |
118 REGISTER_DECLARATION(XMMRegister, j_farg7, xmm7); | |
119 | |
120 REGISTER_DECLARATION(Register, rscratch1, r10); // volatile | |
121 REGISTER_DECLARATION(Register, rscratch2, r11); // volatile | |
122 | |
123 REGISTER_DECLARATION(Register, r15_thread, r15); // callee-saved | |
124 | |
125 #endif // _LP64 | |
126 | |
127 // Address is an abstraction used to represent a memory location | |
128 // using any of the amd64 addressing modes with one object. | |
129 // | |
130 // Note: A register location is represented via a Register, not | |
131 // via an address for efficiency & simplicity reasons. | |
132 | |
133 class ArrayAddress; | |
134 | |
135 class Address VALUE_OBJ_CLASS_SPEC { | |
136 public: | |
137 enum ScaleFactor { | |
138 no_scale = -1, | |
139 times_1 = 0, | |
140 times_2 = 1, | |
141 times_4 = 2, | |
142 times_8 = 3 | |
143 }; | |
144 | |
145 private: | |
146 Register _base; | |
147 Register _index; | |
148 ScaleFactor _scale; | |
149 int _disp; | |
150 RelocationHolder _rspec; | |
151 | |
152 // Easily misused constructors make them private | |
153 Address(int disp, address loc, relocInfo::relocType rtype); | |
154 Address(int disp, address loc, RelocationHolder spec); | |
155 | |
156 public: | |
157 // creation | |
158 Address() | |
159 : _base(noreg), | |
160 _index(noreg), | |
161 _scale(no_scale), | |
162 _disp(0) { | |
163 } | |
164 | |
165 // No default displacement otherwise Register can be implicitly | |
166 // converted to 0(Register) which is quite a different animal. | |
167 | |
168 Address(Register base, int disp) | |
169 : _base(base), | |
170 _index(noreg), | |
171 _scale(no_scale), | |
172 _disp(disp) { | |
173 } | |
174 | |
175 Address(Register base, Register index, ScaleFactor scale, int disp = 0) | |
176 : _base (base), | |
177 _index(index), | |
178 _scale(scale), | |
179 _disp (disp) { | |
180 assert(!index->is_valid() == (scale == Address::no_scale), | |
181 "inconsistent address"); | |
182 } | |
183 | |
184 // The following two overloads are used in connection with the | |
185 // ByteSize type (see sizes.hpp). They simplify the use of | |
186 // ByteSize'd arguments in assembly code. Note that their equivalent | |
187 // for the optimized build are the member functions with int disp | |
188 // argument since ByteSize is mapped to an int type in that case. | |
189 // | |
190 // Note: DO NOT introduce similar overloaded functions for WordSize | |
191 // arguments as in the optimized mode, both ByteSize and WordSize | |
192 // are mapped to the same type and thus the compiler cannot make a | |
193 // distinction anymore (=> compiler errors). | |
194 | |
195 #ifdef ASSERT | |
196 Address(Register base, ByteSize disp) | |
197 : _base(base), | |
198 _index(noreg), | |
199 _scale(no_scale), | |
200 _disp(in_bytes(disp)) { | |
201 } | |
202 | |
203 Address(Register base, Register index, ScaleFactor scale, ByteSize disp) | |
204 : _base(base), | |
205 _index(index), | |
206 _scale(scale), | |
207 _disp(in_bytes(disp)) { | |
208 assert(!index->is_valid() == (scale == Address::no_scale), | |
209 "inconsistent address"); | |
210 } | |
211 #endif // ASSERT | |
212 | |
213 // accessors | |
214 bool uses(Register reg) const { | |
215 return _base == reg || _index == reg; | |
216 } | |
217 | |
218 // Convert the raw encoding form into the form expected by the constructor for | |
219 // Address. An index of 4 (rsp) corresponds to having no index, so convert | |
220 // that to noreg for the Address constructor. | |
221 static Address make_raw(int base, int index, int scale, int disp); | |
222 | |
223 static Address make_array(ArrayAddress); | |
224 | |
225 private: | |
226 bool base_needs_rex() const { | |
227 return _base != noreg && _base->encoding() >= 8; | |
228 } | |
229 | |
230 bool index_needs_rex() const { | |
231 return _index != noreg &&_index->encoding() >= 8; | |
232 } | |
233 | |
234 relocInfo::relocType reloc() const { return _rspec.type(); } | |
235 | |
236 friend class Assembler; | |
237 friend class MacroAssembler; | |
238 friend class LIR_Assembler; // base/index/scale/disp | |
239 }; | |
240 | |
241 // | |
242 // AddressLiteral has been split out from Address because operands of this type | |
243 // need to be treated specially on 32bit vs. 64bit platforms. By splitting it out | |
244 // the few instructions that need to deal with address literals are unique and the | |
245 // MacroAssembler does not have to implement every instruction in the Assembler | |
246 // in order to search for address literals that may need special handling depending | |
247 // on the instruction and the platform. As small step on the way to merging i486/amd64 | |
248 // directories. | |
249 // | |
250 class AddressLiteral VALUE_OBJ_CLASS_SPEC { | |
251 friend class ArrayAddress; | |
252 RelocationHolder _rspec; | |
253 // Typically we use AddressLiterals we want to use their rval | |
254 // However in some situations we want the lval (effect address) of the item. | |
255 // We provide a special factory for making those lvals. | |
256 bool _is_lval; | |
257 | |
258 // If the target is far we'll need to load the ea of this to | |
259 // a register to reach it. Otherwise if near we can do rip | |
260 // relative addressing. | |
261 | |
262 address _target; | |
263 | |
264 protected: | |
265 // creation | |
266 AddressLiteral() | |
267 : _is_lval(false), | |
268 _target(NULL) | |
269 {} | |
270 | |
271 public: | |
272 | |
273 | |
274 AddressLiteral(address target, relocInfo::relocType rtype); | |
275 | |
276 AddressLiteral(address target, RelocationHolder const& rspec) | |
277 : _rspec(rspec), | |
278 _is_lval(false), | |
279 _target(target) | |
280 {} | |
281 | |
282 AddressLiteral addr() { | |
283 AddressLiteral ret = *this; | |
284 ret._is_lval = true; | |
285 return ret; | |
286 } | |
287 | |
288 | |
289 private: | |
290 | |
291 address target() { return _target; } | |
292 bool is_lval() { return _is_lval; } | |
293 | |
294 relocInfo::relocType reloc() const { return _rspec.type(); } | |
295 const RelocationHolder& rspec() const { return _rspec; } | |
296 | |
297 friend class Assembler; | |
298 friend class MacroAssembler; | |
299 friend class Address; | |
300 friend class LIR_Assembler; | |
301 }; | |
302 | |
303 // Convience classes | |
304 class RuntimeAddress: public AddressLiteral { | |
305 | |
306 public: | |
307 | |
308 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {} | |
309 | |
310 }; | |
311 | |
312 class OopAddress: public AddressLiteral { | |
313 | |
314 public: | |
315 | |
316 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){} | |
317 | |
318 }; | |
319 | |
320 class ExternalAddress: public AddressLiteral { | |
321 | |
322 public: | |
323 | |
324 ExternalAddress(address target) : AddressLiteral(target, relocInfo::external_word_type){} | |
325 | |
326 }; | |
327 | |
328 class InternalAddress: public AddressLiteral { | |
329 | |
330 public: | |
331 | |
332 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {} | |
333 | |
334 }; | |
335 | |
336 // x86 can do array addressing as a single operation since disp can be an absolute | |
337 // address but amd64 can't [e.g. array_base(rx, ry:width) ]. We create a class | |
338 // that expresses the concept but does extra magic on amd64 to get the final result | |
339 | |
340 class ArrayAddress VALUE_OBJ_CLASS_SPEC { | |
341 private: | |
342 | |
343 AddressLiteral _base; | |
344 Address _index; | |
345 | |
346 public: | |
347 | |
348 ArrayAddress() {}; | |
349 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {}; | |
350 AddressLiteral base() { return _base; } | |
351 Address index() { return _index; } | |
352 | |
353 }; | |
354 | |
355 // The amd64 Assembler: Pure assembler doing NO optimizations on | |
356 // the instruction level (e.g. mov rax, 0 is not translated into xor | |
357 // rax, rax!); i.e., what you write is what you get. The Assembler is | |
358 // generating code into a CodeBuffer. | |
359 | |
360 const int FPUStateSizeInWords = 512 / wordSize; | |
361 | |
362 class Assembler : public AbstractAssembler { | |
363 friend class AbstractAssembler; // for the non-virtual hack | |
364 friend class StubGenerator; | |
365 | |
366 | |
367 protected: | |
368 #ifdef ASSERT | |
369 void check_relocation(RelocationHolder const& rspec, int format); | |
370 #endif | |
371 | |
372 inline void emit_long64(jlong x); | |
373 | |
374 void emit_data(jint data, relocInfo::relocType rtype, int format /* = 1 */); | |
375 void emit_data(jint data, RelocationHolder const& rspec, int format /* = 1 */); | |
376 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0); | |
377 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0); | |
378 | |
379 // Helper functions for groups of instructions | |
380 void emit_arith_b(int op1, int op2, Register dst, int imm8); | |
381 | |
382 void emit_arith(int op1, int op2, Register dst, int imm32); | |
383 // only x86?? | |
384 void emit_arith(int op1, int op2, Register dst, jobject obj); | |
385 void emit_arith(int op1, int op2, Register dst, Register src); | |
386 | |
387 void emit_operand(Register reg, | |
388 Register base, Register index, Address::ScaleFactor scale, | |
389 int disp, | |
390 RelocationHolder const& rspec, | |
391 int rip_relative_correction = 0); | |
392 void emit_operand(Register reg, Address adr, | |
393 int rip_relative_correction = 0); | |
394 void emit_operand(XMMRegister reg, | |
395 Register base, Register index, Address::ScaleFactor scale, | |
396 int disp, | |
397 RelocationHolder const& rspec, | |
398 int rip_relative_correction = 0); | |
399 void emit_operand(XMMRegister reg, Address adr, | |
400 int rip_relative_correction = 0); | |
401 | |
402 // Immediate-to-memory forms | |
403 void emit_arith_operand(int op1, Register rm, Address adr, int imm32); | |
404 | |
405 void emit_farith(int b1, int b2, int i); | |
406 | |
407 bool reachable(AddressLiteral adr); | |
408 | |
409 // These are all easily abused and hence protected | |
410 | |
411 // Make these disappear in 64bit mode since they would never be correct | |
412 #ifndef _LP64 | |
413 void cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec); | |
414 void cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec); | |
415 | |
416 void mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec); | |
417 void mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec); | |
418 | |
419 void push_literal32(int32_t imm32, RelocationHolder const& rspec); | |
420 #endif // _LP64 | |
421 | |
422 | |
423 void mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec); | |
424 | |
425 // These are unique in that we are ensured by the caller that the 32bit | |
426 // relative in these instructions will always be able to reach the potentially | |
427 // 64bit address described by entry. Since they can take a 64bit address they | |
428 // don't have the 32 suffix like the other instructions in this class. | |
429 void jmp_literal(address entry, RelocationHolder const& rspec); | |
430 void call_literal(address entry, RelocationHolder const& rspec); | |
431 | |
432 public: | |
433 enum Condition { // The amd64 condition codes used for conditional jumps/moves. | |
434 zero = 0x4, | |
435 notZero = 0x5, | |
436 equal = 0x4, | |
437 notEqual = 0x5, | |
438 less = 0xc, | |
439 lessEqual = 0xe, | |
440 greater = 0xf, | |
441 greaterEqual = 0xd, | |
442 below = 0x2, | |
443 belowEqual = 0x6, | |
444 above = 0x7, | |
445 aboveEqual = 0x3, | |
446 overflow = 0x0, | |
447 noOverflow = 0x1, | |
448 carrySet = 0x2, | |
449 carryClear = 0x3, | |
450 negative = 0x8, | |
451 positive = 0x9, | |
452 parity = 0xa, | |
453 noParity = 0xb | |
454 }; | |
455 | |
456 enum Prefix { | |
457 // segment overrides | |
458 // XXX remove segment prefixes | |
459 CS_segment = 0x2e, | |
460 SS_segment = 0x36, | |
461 DS_segment = 0x3e, | |
462 ES_segment = 0x26, | |
463 FS_segment = 0x64, | |
464 GS_segment = 0x65, | |
465 | |
466 REX = 0x40, | |
467 | |
468 REX_B = 0x41, | |
469 REX_X = 0x42, | |
470 REX_XB = 0x43, | |
471 REX_R = 0x44, | |
472 REX_RB = 0x45, | |
473 REX_RX = 0x46, | |
474 REX_RXB = 0x47, | |
475 | |
476 REX_W = 0x48, | |
477 | |
478 REX_WB = 0x49, | |
479 REX_WX = 0x4A, | |
480 REX_WXB = 0x4B, | |
481 REX_WR = 0x4C, | |
482 REX_WRB = 0x4D, | |
483 REX_WRX = 0x4E, | |
484 REX_WRXB = 0x4F | |
485 }; | |
486 | |
487 enum WhichOperand { | |
488 // input to locate_operand, and format code for relocations | |
489 imm64_operand = 0, // embedded 64-bit immediate operand | |
490 disp32_operand = 1, // embedded 32-bit displacement | |
491 call32_operand = 2, // embedded 32-bit self-relative displacement | |
492 _WhichOperand_limit = 3 | |
493 }; | |
494 | |
495 public: | |
496 | |
497 // Creation | |
498 Assembler(CodeBuffer* code) | |
499 : AbstractAssembler(code) { | |
500 } | |
501 | |
502 // Decoding | |
503 static address locate_operand(address inst, WhichOperand which); | |
504 static address locate_next_instruction(address inst); | |
505 | |
506 // Utilities | |
507 | |
508 static bool is_simm(int64_t x, int nbits) { return -( CONST64(1) << (nbits-1) ) <= x && x < ( CONST64(1) << (nbits-1) ); } | |
509 static bool is_simm32 (int64_t x) { return x == (int64_t)(int32_t)x; } | |
510 | |
511 | |
512 // Stack | |
513 void pushaq(); | |
514 void popaq(); | |
515 | |
516 void pushfq(); | |
517 void popfq(); | |
518 | |
519 void pushq(int imm32); | |
520 | |
521 void pushq(Register src); | |
522 void pushq(Address src); | |
523 | |
524 void popq(Register dst); | |
525 void popq(Address dst); | |
526 | |
527 // Instruction prefixes | |
528 void prefix(Prefix p); | |
529 | |
530 int prefix_and_encode(int reg_enc, bool byteinst = false); | |
531 int prefixq_and_encode(int reg_enc); | |
532 | |
533 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false); | |
534 int prefixq_and_encode(int dst_enc, int src_enc); | |
535 | |
536 void prefix(Register reg); | |
537 void prefix(Address adr); | |
538 void prefixq(Address adr); | |
539 | |
540 void prefix(Address adr, Register reg, bool byteinst = false); | |
541 void prefixq(Address adr, Register reg); | |
542 | |
543 void prefix(Address adr, XMMRegister reg); | |
544 | |
545 // Moves | |
546 void movb(Register dst, Address src); | |
547 void movb(Address dst, int imm8); | |
548 void movb(Address dst, Register src); | |
549 | |
550 void movw(Address dst, int imm16); | |
551 void movw(Register dst, Address src); | |
552 void movw(Address dst, Register src); | |
553 | |
554 void movl(Register dst, int imm32); | |
555 void movl(Register dst, Register src); | |
556 void movl(Register dst, Address src); | |
557 void movl(Address dst, int imm32); | |
558 void movl(Address dst, Register src); | |
559 | |
560 void movq(Register dst, Register src); | |
561 void movq(Register dst, Address src); | |
562 void movq(Address dst, Register src); | |
563 // These prevent using movq from converting a zero (like NULL) into Register | |
564 // by giving the compiler two choices it can't resolve | |
565 void movq(Address dst, void* dummy); | |
566 void movq(Register dst, void* dummy); | |
567 | |
568 void mov64(Register dst, intptr_t imm64); | |
569 void mov64(Address dst, intptr_t imm64); | |
570 | |
571 void movsbl(Register dst, Address src); | |
572 void movsbl(Register dst, Register src); | |
573 void movswl(Register dst, Address src); | |
574 void movswl(Register dst, Register src); | |
575 void movslq(Register dst, Address src); | |
576 void movslq(Register dst, Register src); | |
577 | |
578 void movzbl(Register dst, Address src); | |
579 void movzbl(Register dst, Register src); | |
580 void movzwl(Register dst, Address src); | |
581 void movzwl(Register dst, Register src); | |
582 | |
583 protected: // Avoid using the next instructions directly. | |
584 // New cpus require use of movsd and movss to avoid partial register stall | |
585 // when loading from memory. But for old Opteron use movlpd instead of movsd. | |
586 // The selection is done in MacroAssembler::movdbl() and movflt(). | |
587 void movss(XMMRegister dst, XMMRegister src); | |
588 void movss(XMMRegister dst, Address src); | |
589 void movss(Address dst, XMMRegister src); | |
590 void movsd(XMMRegister dst, XMMRegister src); | |
591 void movsd(Address dst, XMMRegister src); | |
592 void movsd(XMMRegister dst, Address src); | |
593 void movlpd(XMMRegister dst, Address src); | |
594 // New cpus require use of movaps and movapd to avoid partial register stall | |
595 // when moving between registers. | |
596 void movapd(XMMRegister dst, XMMRegister src); | |
597 void movaps(XMMRegister dst, XMMRegister src); | |
598 public: | |
599 | |
600 void movdl(XMMRegister dst, Register src); | |
601 void movdl(Register dst, XMMRegister src); | |
602 void movdq(XMMRegister dst, Register src); | |
603 void movdq(Register dst, XMMRegister src); | |
604 | |
605 void cmovl(Condition cc, Register dst, Register src); | |
606 void cmovl(Condition cc, Register dst, Address src); | |
607 void cmovq(Condition cc, Register dst, Register src); | |
608 void cmovq(Condition cc, Register dst, Address src); | |
609 | |
610 // Prefetches | |
611 private: | |
612 void prefetch_prefix(Address src); | |
613 public: | |
614 void prefetcht0(Address src); | |
615 void prefetcht1(Address src); | |
616 void prefetcht2(Address src); | |
617 void prefetchnta(Address src); | |
618 void prefetchw(Address src); | |
619 | |
620 // Arithmetics | |
621 void adcl(Register dst, int imm32); | |
622 void adcl(Register dst, Address src); | |
623 void adcl(Register dst, Register src); | |
624 void adcq(Register dst, int imm32); | |
625 void adcq(Register dst, Address src); | |
626 void adcq(Register dst, Register src); | |
627 | |
628 void addl(Address dst, int imm32); | |
629 void addl(Address dst, Register src); | |
630 void addl(Register dst, int imm32); | |
631 void addl(Register dst, Address src); | |
632 void addl(Register dst, Register src); | |
633 void addq(Address dst, int imm32); | |
634 void addq(Address dst, Register src); | |
635 void addq(Register dst, int imm32); | |
636 void addq(Register dst, Address src); | |
637 void addq(Register dst, Register src); | |
638 | |
639 void andl(Register dst, int imm32); | |
640 void andl(Register dst, Address src); | |
641 void andl(Register dst, Register src); | |
642 void andq(Register dst, int imm32); | |
643 void andq(Register dst, Address src); | |
644 void andq(Register dst, Register src); | |
645 | |
646 void cmpb(Address dst, int imm8); | |
647 void cmpl(Address dst, int imm32); | |
648 void cmpl(Register dst, int imm32); | |
649 void cmpl(Register dst, Register src); | |
650 void cmpl(Register dst, Address src); | |
651 void cmpq(Address dst, int imm32); | |
652 void cmpq(Address dst, Register src); | |
653 void cmpq(Register dst, int imm32); | |
654 void cmpq(Register dst, Register src); | |
655 void cmpq(Register dst, Address src); | |
656 | |
657 void ucomiss(XMMRegister dst, XMMRegister src); | |
658 void ucomisd(XMMRegister dst, XMMRegister src); | |
659 | |
660 protected: | |
661 // Don't use next inc() and dec() methods directly. INC & DEC instructions | |
662 // could cause a partial flag stall since they don't set CF flag. | |
663 // Use MacroAssembler::decrement() & MacroAssembler::increment() methods | |
664 // which call inc() & dec() or add() & sub() in accordance with | |
665 // the product flag UseIncDec value. | |
666 | |
667 void decl(Register dst); | |
668 void decl(Address dst); | |
669 void decq(Register dst); | |
670 void decq(Address dst); | |
671 | |
672 void incl(Register dst); | |
673 void incl(Address dst); | |
674 void incq(Register dst); | |
675 void incq(Address dst); | |
676 | |
677 public: | |
678 void idivl(Register src); | |
679 void idivq(Register src); | |
680 void cdql(); | |
681 void cdqq(); | |
682 | |
683 void imull(Register dst, Register src); | |
684 void imull(Register dst, Register src, int value); | |
685 void imulq(Register dst, Register src); | |
686 void imulq(Register dst, Register src, int value); | |
687 | |
688 void leal(Register dst, Address src); | |
689 void leaq(Register dst, Address src); | |
690 | |
691 void mull(Address src); | |
692 void mull(Register src); | |
693 | |
694 void negl(Register dst); | |
695 void negq(Register dst); | |
696 | |
697 void notl(Register dst); | |
698 void notq(Register dst); | |
699 | |
700 void orl(Address dst, int imm32); | |
701 void orl(Register dst, int imm32); | |
702 void orl(Register dst, Address src); | |
703 void orl(Register dst, Register src); | |
704 void orq(Address dst, int imm32); | |
705 void orq(Register dst, int imm32); | |
706 void orq(Register dst, Address src); | |
707 void orq(Register dst, Register src); | |
708 | |
709 void rcll(Register dst, int imm8); | |
710 void rclq(Register dst, int imm8); | |
711 | |
712 void sarl(Register dst, int imm8); | |
713 void sarl(Register dst); | |
714 void sarq(Register dst, int imm8); | |
715 void sarq(Register dst); | |
716 | |
717 void sbbl(Address dst, int imm32); | |
718 void sbbl(Register dst, int imm32); | |
719 void sbbl(Register dst, Address src); | |
720 void sbbl(Register dst, Register src); | |
721 void sbbq(Address dst, int imm32); | |
722 void sbbq(Register dst, int imm32); | |
723 void sbbq(Register dst, Address src); | |
724 void sbbq(Register dst, Register src); | |
725 | |
726 void shll(Register dst, int imm8); | |
727 void shll(Register dst); | |
728 void shlq(Register dst, int imm8); | |
729 void shlq(Register dst); | |
730 | |
731 void shrl(Register dst, int imm8); | |
732 void shrl(Register dst); | |
733 void shrq(Register dst, int imm8); | |
734 void shrq(Register dst); | |
735 | |
736 void subl(Address dst, int imm32); | |
737 void subl(Address dst, Register src); | |
738 void subl(Register dst, int imm32); | |
739 void subl(Register dst, Address src); | |
740 void subl(Register dst, Register src); | |
741 void subq(Address dst, int imm32); | |
742 void subq(Address dst, Register src); | |
743 void subq(Register dst, int imm32); | |
744 void subq(Register dst, Address src); | |
745 void subq(Register dst, Register src); | |
746 | |
747 void testb(Register dst, int imm8); | |
748 void testl(Register dst, int imm32); | |
749 void testl(Register dst, Register src); | |
750 void testq(Register dst, int imm32); | |
751 void testq(Register dst, Register src); | |
752 | |
753 void xaddl(Address dst, Register src); | |
754 void xaddq(Address dst, Register src); | |
755 | |
756 void xorl(Register dst, int imm32); | |
757 void xorl(Register dst, Address src); | |
758 void xorl(Register dst, Register src); | |
759 void xorq(Register dst, int imm32); | |
760 void xorq(Register dst, Address src); | |
761 void xorq(Register dst, Register src); | |
762 | |
763 // Miscellaneous | |
764 void bswapl(Register reg); | |
765 void bswapq(Register reg); | |
766 void lock(); | |
767 | |
768 void xchgl(Register reg, Address adr); | |
769 void xchgl(Register dst, Register src); | |
770 void xchgq(Register reg, Address adr); | |
771 void xchgq(Register dst, Register src); | |
772 | |
773 void cmpxchgl(Register reg, Address adr); | |
774 void cmpxchgq(Register reg, Address adr); | |
775 | |
776 void nop(int i = 1); | |
777 void addr_nop_4(); | |
778 void addr_nop_5(); | |
779 void addr_nop_7(); | |
780 void addr_nop_8(); | |
781 | |
782 void hlt(); | |
783 void ret(int imm16); | |
784 void smovl(); | |
785 void rep_movl(); | |
786 void rep_movq(); | |
787 void rep_set(); | |
788 void repne_scan(); | |
789 void setb(Condition cc, Register dst); | |
790 | |
791 void clflush(Address adr); | |
792 | |
793 enum Membar_mask_bits { | |
794 StoreStore = 1 << 3, | |
795 LoadStore = 1 << 2, | |
796 StoreLoad = 1 << 1, | |
797 LoadLoad = 1 << 0 | |
798 }; | |
799 | |
800 // Serializes memory. | |
801 void membar(Membar_mask_bits order_constraint) { | |
802 // We only have to handle StoreLoad and LoadLoad | |
803 if (order_constraint & StoreLoad) { | |
804 // MFENCE subsumes LFENCE | |
805 mfence(); | |
806 } /* [jk] not needed currently: else if (order_constraint & LoadLoad) { | |
807 lfence(); | |
808 } */ | |
809 } | |
810 | |
811 void lfence() { | |
812 emit_byte(0x0F); | |
813 emit_byte(0xAE); | |
814 emit_byte(0xE8); | |
815 } | |
816 | |
817 void mfence() { | |
818 emit_byte(0x0F); | |
819 emit_byte(0xAE); | |
820 emit_byte(0xF0); | |
821 } | |
822 | |
823 // Identify processor type and features | |
824 void cpuid() { | |
825 emit_byte(0x0F); | |
826 emit_byte(0xA2); | |
827 } | |
828 | |
829 void cld() { emit_byte(0xfc); | |
830 } | |
831 | |
832 void std() { emit_byte(0xfd); | |
833 } | |
834 | |
835 | |
836 // Calls | |
837 | |
838 void call(Label& L, relocInfo::relocType rtype); | |
839 void call(Register reg); | |
840 void call(Address adr); | |
841 | |
842 // Jumps | |
843 | |
844 void jmp(Register reg); | |
845 void jmp(Address adr); | |
846 | |
847 // Label operations & relative jumps (PPUM Appendix D) | |
848 // unconditional jump to L | |
849 void jmp(Label& L, relocInfo::relocType rtype = relocInfo::none); | |
850 | |
851 | |
852 // Unconditional 8-bit offset jump to L. | |
853 // WARNING: be very careful using this for forward jumps. If the label is | |
854 // not bound within an 8-bit offset of this instruction, a run-time error | |
855 // will occur. | |
856 void jmpb(Label& L); | |
857 | |
858 // jcc is the generic conditional branch generator to run- time | |
859 // routines, jcc is used for branches to labels. jcc takes a branch | |
860 // opcode (cc) and a label (L) and generates either a backward | |
861 // branch or a forward branch and links it to the label fixup | |
862 // chain. Usage: | |
863 // | |
864 // Label L; // unbound label | |
865 // jcc(cc, L); // forward branch to unbound label | |
866 // bind(L); // bind label to the current pc | |
867 // jcc(cc, L); // backward branch to bound label | |
868 // bind(L); // illegal: a label may be bound only once | |
869 // | |
870 // Note: The same Label can be used for forward and backward branches | |
871 // but it may be bound only once. | |
872 | |
873 void jcc(Condition cc, Label& L, | |
874 relocInfo::relocType rtype = relocInfo::none); | |
875 | |
876 // Conditional jump to a 8-bit offset to L. | |
877 // WARNING: be very careful using this for forward jumps. If the label is | |
878 // not bound within an 8-bit offset of this instruction, a run-time error | |
879 // will occur. | |
880 void jccb(Condition cc, Label& L); | |
881 | |
882 // Floating-point operations | |
883 | |
884 void fxsave(Address dst); | |
885 void fxrstor(Address src); | |
886 void ldmxcsr(Address src); | |
887 void stmxcsr(Address dst); | |
888 | |
889 void addss(XMMRegister dst, XMMRegister src); | |
890 void addss(XMMRegister dst, Address src); | |
891 void subss(XMMRegister dst, XMMRegister src); | |
892 void subss(XMMRegister dst, Address src); | |
893 void mulss(XMMRegister dst, XMMRegister src); | |
894 void mulss(XMMRegister dst, Address src); | |
895 void divss(XMMRegister dst, XMMRegister src); | |
896 void divss(XMMRegister dst, Address src); | |
897 void addsd(XMMRegister dst, XMMRegister src); | |
898 void addsd(XMMRegister dst, Address src); | |
899 void subsd(XMMRegister dst, XMMRegister src); | |
900 void subsd(XMMRegister dst, Address src); | |
901 void mulsd(XMMRegister dst, XMMRegister src); | |
902 void mulsd(XMMRegister dst, Address src); | |
903 void divsd(XMMRegister dst, XMMRegister src); | |
904 void divsd(XMMRegister dst, Address src); | |
905 | |
906 // We only need the double form | |
907 void sqrtsd(XMMRegister dst, XMMRegister src); | |
908 void sqrtsd(XMMRegister dst, Address src); | |
909 | |
910 void xorps(XMMRegister dst, XMMRegister src); | |
911 void xorps(XMMRegister dst, Address src); | |
912 void xorpd(XMMRegister dst, XMMRegister src); | |
913 void xorpd(XMMRegister dst, Address src); | |
914 | |
915 void cvtsi2ssl(XMMRegister dst, Register src); | |
916 void cvtsi2ssq(XMMRegister dst, Register src); | |
917 void cvtsi2sdl(XMMRegister dst, Register src); | |
918 void cvtsi2sdq(XMMRegister dst, Register src); | |
919 void cvttss2sil(Register dst, XMMRegister src); // truncates | |
920 void cvttss2siq(Register dst, XMMRegister src); // truncates | |
921 void cvttsd2sil(Register dst, XMMRegister src); // truncates | |
922 void cvttsd2siq(Register dst, XMMRegister src); // truncates | |
923 void cvtss2sd(XMMRegister dst, XMMRegister src); | |
924 void cvtsd2ss(XMMRegister dst, XMMRegister src); | |
925 | |
926 void pxor(XMMRegister dst, Address src); // Xor Packed Byte Integer Values | |
927 void pxor(XMMRegister dst, XMMRegister src); // Xor Packed Byte Integer Values | |
928 | |
929 void movdqa(XMMRegister dst, Address src); // Move Aligned Double Quadword | |
930 void movdqa(XMMRegister dst, XMMRegister src); | |
931 void movdqa(Address dst, XMMRegister src); | |
932 | |
933 void movq(XMMRegister dst, Address src); | |
934 void movq(Address dst, XMMRegister src); | |
935 | |
936 void pshufd(XMMRegister dst, XMMRegister src, int mode); // Shuffle Packed Doublewords | |
937 void pshufd(XMMRegister dst, Address src, int mode); | |
938 void pshuflw(XMMRegister dst, XMMRegister src, int mode); // Shuffle Packed Low Words | |
939 void pshuflw(XMMRegister dst, Address src, int mode); | |
940 | |
941 void psrlq(XMMRegister dst, int shift); // Shift Right Logical Quadword Immediate | |
942 | |
943 void punpcklbw(XMMRegister dst, XMMRegister src); // Interleave Low Bytes | |
944 void punpcklbw(XMMRegister dst, Address src); | |
945 }; | |
946 | |
947 | |
948 // MacroAssembler extends Assembler by frequently used macros. | |
949 // | |
950 // Instructions for which a 'better' code sequence exists depending | |
951 // on arguments should also go in here. | |
952 | |
953 class MacroAssembler : public Assembler { | |
954 friend class LIR_Assembler; | |
955 protected: | |
956 | |
957 Address as_Address(AddressLiteral adr); | |
958 Address as_Address(ArrayAddress adr); | |
959 | |
960 // Support for VM calls | |
961 // | |
962 // This is the base routine called by the different versions of | |
963 // call_VM_leaf. The interpreter may customize this version by | |
964 // overriding it for its purposes (e.g., to save/restore additional | |
965 // registers when doing a VM call). | |
966 | |
967 virtual void call_VM_leaf_base( | |
968 address entry_point, // the entry point | |
969 int number_of_arguments // the number of arguments to | |
970 // pop after the call | |
971 ); | |
972 | |
973 // This is the base routine called by the different versions of | |
974 // call_VM. The interpreter may customize this version by overriding | |
975 // it for its purposes (e.g., to save/restore additional registers | |
976 // when doing a VM call). | |
977 // | |
978 // If no java_thread register is specified (noreg) than rdi will be | |
979 // used instead. call_VM_base returns the register which contains | |
980 // the thread upon return. If a thread register has been specified, | |
981 // the return value will correspond to that register. If no | |
982 // last_java_sp is specified (noreg) than rsp will be used instead. | |
983 virtual void call_VM_base( // returns the register | |
984 // containing the thread upon | |
985 // return | |
986 Register oop_result, // where an oop-result ends up | |
987 // if any; use noreg otherwise | |
988 Register java_thread, // the thread if computed | |
989 // before ; use noreg otherwise | |
990 Register last_java_sp, // to set up last_Java_frame in | |
991 // stubs; use noreg otherwise | |
992 address entry_point, // the entry point | |
993 int number_of_arguments, // the number of arguments (w/o | |
994 // thread) to pop after the | |
995 // call | |
996 bool check_exceptions // whether to check for pending | |
997 // exceptions after return | |
998 ); | |
999 | |
1000 // This routines should emit JVMTI PopFrame handling and ForceEarlyReturn code. | |
1001 // The implementation is only non-empty for the InterpreterMacroAssembler, | |
1002 // as only the interpreter handles PopFrame and ForceEarlyReturn requests. | |
1003 virtual void check_and_handle_popframe(Register java_thread); | |
1004 virtual void check_and_handle_earlyret(Register java_thread); | |
1005 | |
1006 void call_VM_helper(Register oop_result, | |
1007 address entry_point, | |
1008 int number_of_arguments, | |
1009 bool check_exceptions = true); | |
1010 | |
1011 public: | |
1012 MacroAssembler(CodeBuffer* code) : Assembler(code) {} | |
1013 | |
1014 // Support for NULL-checks | |
1015 // | |
1016 // Generates code that causes a NULL OS exception if the content of | |
1017 // reg is NULL. If the accessed location is M[reg + offset] and the | |
1018 // offset is known, provide the offset. No explicit code generation | |
1019 // is needed if the offset is within a certain range (0 <= offset <= | |
1020 // page_size). | |
1021 void null_check(Register reg, int offset = -1); | |
1022 static bool needs_explicit_null_check(int offset); | |
1023 | |
1024 // Required platform-specific helpers for Label::patch_instructions. | |
1025 // They _shadow_ the declarations in AbstractAssembler, which are undefined. | |
1026 void pd_patch_instruction(address branch, address target); | |
1027 #ifndef PRODUCT | |
1028 static void pd_print_patched_instruction(address branch); | |
1029 #endif | |
1030 | |
1031 | |
1032 // The following 4 methods return the offset of the appropriate move | |
1033 // instruction. Note: these are 32 bit instructions | |
1034 | |
1035 // Support for fast byte/word loading with zero extension (depending | |
1036 // on particular CPU) | |
1037 int load_unsigned_byte(Register dst, Address src); | |
1038 int load_unsigned_word(Register dst, Address src); | |
1039 | |
1040 // Support for fast byte/word loading with sign extension (depending | |
1041 // on particular CPU) | |
1042 int load_signed_byte(Register dst, Address src); | |
1043 int load_signed_word(Register dst, Address src); | |
1044 | |
1045 // Support for inc/dec with optimal instruction selection depending | |
1046 // on value | |
1047 void incrementl(Register reg, int value = 1); | |
1048 void decrementl(Register reg, int value = 1); | |
1049 void incrementq(Register reg, int value = 1); | |
1050 void decrementq(Register reg, int value = 1); | |
1051 | |
1052 void incrementl(Address dst, int value = 1); | |
1053 void decrementl(Address dst, int value = 1); | |
1054 void incrementq(Address dst, int value = 1); | |
1055 void decrementq(Address dst, int value = 1); | |
1056 | |
1057 // Support optimal SSE move instructions. | |
1058 void movflt(XMMRegister dst, XMMRegister src) { | |
1059 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; } | |
1060 else { movss (dst, src); return; } | |
1061 } | |
1062 | |
1063 void movflt(XMMRegister dst, Address src) { movss(dst, src); } | |
1064 | |
1065 void movflt(XMMRegister dst, AddressLiteral src); | |
1066 | |
1067 void movflt(Address dst, XMMRegister src) { movss(dst, src); } | |
1068 | |
1069 void movdbl(XMMRegister dst, XMMRegister src) { | |
1070 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; } | |
1071 else { movsd (dst, src); return; } | |
1072 } | |
1073 | |
1074 void movdbl(XMMRegister dst, AddressLiteral src); | |
1075 | |
1076 void movdbl(XMMRegister dst, Address src) { | |
1077 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; } | |
1078 else { movlpd(dst, src); return; } | |
1079 } | |
1080 | |
1081 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); } | |
1082 | |
1083 void incrementl(AddressLiteral dst); | |
1084 void incrementl(ArrayAddress dst); | |
1085 | |
1086 // Alignment | |
1087 void align(int modulus); | |
1088 | |
1089 // Misc | |
1090 void fat_nop(); // 5 byte nop | |
1091 | |
1092 | |
1093 // C++ bool manipulation | |
1094 | |
1095 void movbool(Register dst, Address src); | |
1096 void movbool(Address dst, bool boolconst); | |
1097 void movbool(Address dst, Register src); | |
1098 void testbool(Register dst); | |
1099 | |
1100 // Stack frame creation/removal | |
1101 void enter(); | |
1102 void leave(); | |
1103 | |
1104 // Support for getting the JavaThread pointer (i.e.; a reference to | |
1105 // thread-local information) The pointer will be loaded into the | |
1106 // thread register. | |
1107 void get_thread(Register thread); | |
1108 | |
1109 void int3(); | |
1110 | |
1111 // Support for VM calls | |
1112 // | |
1113 // It is imperative that all calls into the VM are handled via the | |
1114 // call_VM macros. They make sure that the stack linkage is setup | |
1115 // correctly. call_VM's correspond to ENTRY/ENTRY_X entry points | |
1116 // while call_VM_leaf's correspond to LEAF entry points. | |
1117 void call_VM(Register oop_result, | |
1118 address entry_point, | |
1119 bool check_exceptions = true); | |
1120 void call_VM(Register oop_result, | |
1121 address entry_point, | |
1122 Register arg_1, | |
1123 bool check_exceptions = true); | |
1124 void call_VM(Register oop_result, | |
1125 address entry_point, | |
1126 Register arg_1, Register arg_2, | |
1127 bool check_exceptions = true); | |
1128 void call_VM(Register oop_result, | |
1129 address entry_point, | |
1130 Register arg_1, Register arg_2, Register arg_3, | |
1131 bool check_exceptions = true); | |
1132 | |
1133 // Overloadings with last_Java_sp | |
1134 void call_VM(Register oop_result, | |
1135 Register last_java_sp, | |
1136 address entry_point, | |
1137 int number_of_arguments = 0, | |
1138 bool check_exceptions = true); | |
1139 void call_VM(Register oop_result, | |
1140 Register last_java_sp, | |
1141 address entry_point, | |
1142 Register arg_1, bool | |
1143 check_exceptions = true); | |
1144 void call_VM(Register oop_result, | |
1145 Register last_java_sp, | |
1146 address entry_point, | |
1147 Register arg_1, Register arg_2, | |
1148 bool check_exceptions = true); | |
1149 void call_VM(Register oop_result, | |
1150 Register last_java_sp, | |
1151 address entry_point, | |
1152 Register arg_1, Register arg_2, Register arg_3, | |
1153 bool check_exceptions = true); | |
1154 | |
1155 void call_VM_leaf(address entry_point, | |
1156 int number_of_arguments = 0); | |
1157 void call_VM_leaf(address entry_point, | |
1158 Register arg_1); | |
1159 void call_VM_leaf(address entry_point, | |
1160 Register arg_1, Register arg_2); | |
1161 void call_VM_leaf(address entry_point, | |
1162 Register arg_1, Register arg_2, Register arg_3); | |
1163 | |
1164 // last Java Frame (fills frame anchor) | |
1165 void set_last_Java_frame(Register last_java_sp, | |
1166 Register last_java_fp, | |
1167 address last_java_pc); | |
1168 void reset_last_Java_frame(bool clear_fp, bool clear_pc); | |
1169 | |
1170 // Stores | |
1171 void store_check(Register obj); // store check for | |
1172 // obj - register is | |
1173 // destroyed | |
1174 // afterwards | |
1175 void store_check(Register obj, Address dst); // same as above, dst | |
1176 // is exact store | |
1177 // location (reg. is | |
1178 // destroyed) | |
1179 | |
1180 // split store_check(Register obj) to enhance instruction interleaving | |
1181 void store_check_part_1(Register obj); | |
1182 void store_check_part_2(Register obj); | |
1183 | |
1184 // C 'boolean' to Java boolean: x == 0 ? 0 : 1 | |
1185 void c2bool(Register x); | |
1186 | |
1187 // Int division/reminder for Java | |
1188 // (as idivl, but checks for special case as described in JVM spec.) | |
1189 // returns idivl instruction offset for implicit exception handling | |
1190 int corrected_idivl(Register reg); | |
1191 // Long division/reminder for Java | |
1192 // (as idivq, but checks for special case as described in JVM spec.) | |
1193 // returns idivq instruction offset for implicit exception handling | |
1194 int corrected_idivq(Register reg); | |
1195 | |
1196 // Push and pop integer/fpu/cpu state | |
1197 void push_IU_state(); | |
1198 void pop_IU_state(); | |
1199 | |
1200 void push_FPU_state(); | |
1201 void pop_FPU_state(); | |
1202 | |
1203 void push_CPU_state(); | |
1204 void pop_CPU_state(); | |
1205 | |
1206 // Sign extension | |
1207 void sign_extend_short(Register reg); | |
1208 void sign_extend_byte(Register reg); | |
1209 | |
1210 // Division by power of 2, rounding towards 0 | |
1211 void division_with_shift(Register reg, int shift_value); | |
1212 | |
1213 // Round up to a power of two | |
1214 void round_to_l(Register reg, int modulus); | |
1215 void round_to_q(Register reg, int modulus); | |
1216 | |
1217 // allocation | |
1218 void eden_allocate( | |
1219 Register obj, // result: pointer to object after | |
1220 // successful allocation | |
1221 Register var_size_in_bytes, // object size in bytes if unknown at | |
1222 // compile time; invalid otherwise | |
1223 int con_size_in_bytes, // object size in bytes if known at | |
1224 // compile time | |
1225 Register t1, // temp register | |
1226 Label& slow_case // continuation point if fast | |
1227 // allocation fails | |
1228 ); | |
1229 void tlab_allocate( | |
1230 Register obj, // result: pointer to object after | |
1231 // successful allocation | |
1232 Register var_size_in_bytes, // object size in bytes if unknown at | |
1233 // compile time; invalid otherwise | |
1234 int con_size_in_bytes, // object size in bytes if known at | |
1235 // compile time | |
1236 Register t1, // temp register | |
1237 Register t2, // temp register | |
1238 Label& slow_case // continuation point if fast | |
1239 // allocation fails | |
1240 ); | |
1241 void tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); | |
1242 | |
1243 //---- | |
1244 | |
1245 // Debugging | |
1246 | |
1247 // only if +VerifyOops | |
1248 void verify_oop(Register reg, const char* s = "broken oop"); | |
1249 void verify_oop_addr(Address addr, const char * s = "broken oop addr"); | |
1250 | |
1251 // only if +VerifyFPU | |
1252 void verify_FPU(int stack_depth, const char* s = "illegal FPU state") {} | |
1253 | |
1254 // prints msg, dumps registers and stops execution | |
1255 void stop(const char* msg); | |
1256 | |
1257 // prints message and continues | |
1258 void warn(const char* msg); | |
1259 | |
1260 static void debug(char* msg, int64_t pc, int64_t regs[]); | |
1261 | |
1262 void os_breakpoint(); | |
1263 | |
1264 void untested() | |
1265 { | |
1266 stop("untested"); | |
1267 } | |
1268 | |
1269 void unimplemented(const char* what = "") | |
1270 { | |
1271 char* b = new char[1024]; | |
1272 sprintf(b, "unimplemented: %s", what); | |
1273 stop(b); | |
1274 } | |
1275 | |
1276 void should_not_reach_here() | |
1277 { | |
1278 stop("should not reach here"); | |
1279 } | |
1280 | |
1281 // Stack overflow checking | |
1282 void bang_stack_with_offset(int offset) | |
1283 { | |
1284 // stack grows down, caller passes positive offset | |
1285 assert(offset > 0, "must bang with negative offset"); | |
1286 movl(Address(rsp, (-offset)), rax); | |
1287 } | |
1288 | |
1289 // Writes to stack successive pages until offset reached to check for | |
1290 // stack overflow + shadow pages. Also, clobbers tmp | |
1291 void bang_stack_size(Register offset, Register tmp); | |
1292 | |
1293 // Support for serializing memory accesses between threads. | |
1294 void serialize_memory(Register thread, Register tmp); | |
1295 | |
1296 void verify_tlab(); | |
1297 | |
1298 // Biased locking support | |
1299 // lock_reg and obj_reg must be loaded up with the appropriate values. | |
1300 // swap_reg must be rax and is killed. | |
1301 // tmp_reg must be supplied and is killed. | |
1302 // If swap_reg_contains_mark is true then the code assumes that the | |
1303 // mark word of the object has already been loaded into swap_reg. | |
1304 // Optional slow case is for implementations (interpreter and C1) which branch to | |
1305 // slow case directly. Leaves condition codes set for C2's Fast_Lock node. | |
1306 // Returns offset of first potentially-faulting instruction for null | |
1307 // check info (currently consumed only by C1). If | |
1308 // swap_reg_contains_mark is true then returns -1 as it is assumed | |
1309 // the calling code has already passed any potential faults. | |
1310 int biased_locking_enter(Register lock_reg, Register obj_reg, Register swap_reg, Register tmp_reg, | |
1311 bool swap_reg_contains_mark, | |
1312 Label& done, Label* slow_case = NULL, | |
1313 BiasedLockingCounters* counters = NULL); | |
1314 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done); | |
1315 | |
1316 Condition negate_condition(Condition cond); | |
1317 | |
1318 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit | |
1319 // operands. In general the names are modified to avoid hiding the instruction in Assembler | |
1320 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers | |
1321 // here in MacroAssembler. The major exception to this rule is call | |
1322 | |
1323 // Arithmetics | |
1324 | |
1325 void cmp8(AddressLiteral src1, int8_t imm32); | |
1326 | |
1327 void cmp32(AddressLiteral src1, int32_t src2); | |
1328 // compare reg - mem, or reg - &mem | |
1329 void cmp32(Register src1, AddressLiteral src2); | |
1330 | |
1331 void cmp32(Register src1, Address src2); | |
1332 | |
1333 #ifndef _LP64 | |
1334 void cmpoop(Address dst, jobject obj); | |
1335 void cmpoop(Register dst, jobject obj); | |
1336 #endif // _LP64 | |
1337 | |
1338 // NOTE src2 must be the lval. This is NOT an mem-mem compare | |
1339 void cmpptr(Address src1, AddressLiteral src2); | |
1340 | |
1341 void cmpptr(Register src1, AddressLiteral src); | |
1342 | |
1343 // will be cmpreg(?) | |
1344 void cmp64(Register src1, AddressLiteral src); | |
1345 | |
1346 void cmpxchgptr(Register reg, Address adr); | |
1347 void cmpxchgptr(Register reg, AddressLiteral adr); | |
1348 | |
1349 // Helper functions for statistics gathering. | |
1350 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes. | |
1351 void cond_inc32(Condition cond, AddressLiteral counter_addr); | |
1352 // Unconditional atomic increment. | |
1353 void atomic_incl(AddressLiteral counter_addr); | |
1354 | |
1355 | |
1356 void lea(Register dst, AddressLiteral src); | |
1357 void lea(Register dst, Address src); | |
1358 | |
1359 | |
1360 // Calls | |
1361 void call(Label& L, relocInfo::relocType rtype); | |
1362 void call(Register entry); | |
1363 void call(AddressLiteral entry); | |
1364 | |
1365 // Jumps | |
1366 | |
1367 // 32bit can do a case table jump in one instruction but we no longer allow the base | |
1368 // to be installed in the Address class | |
1369 void jump(ArrayAddress entry); | |
1370 | |
1371 void jump(AddressLiteral entry); | |
1372 void jump_cc(Condition cc, AddressLiteral dst); | |
1373 | |
1374 // Floating | |
1375 | |
1376 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); } | |
1377 void ldmxcsr(AddressLiteral src); | |
1378 | |
1379 private: | |
1380 // these are private because users should be doing movflt/movdbl | |
1381 | |
1382 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); } | |
1383 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); } | |
1384 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); } | |
1385 void movss(XMMRegister dst, AddressLiteral src); | |
1386 | |
1387 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); } | |
1388 void movlpd(XMMRegister dst, AddressLiteral src); | |
1389 | |
1390 public: | |
1391 | |
1392 | |
1393 void xorpd(XMMRegister dst, XMMRegister src) {Assembler::xorpd(dst, src); } | |
1394 void xorpd(XMMRegister dst, Address src) {Assembler::xorpd(dst, src); } | |
1395 void xorpd(XMMRegister dst, AddressLiteral src); | |
1396 | |
1397 void xorps(XMMRegister dst, XMMRegister src) {Assembler::xorps(dst, src); } | |
1398 void xorps(XMMRegister dst, Address src) {Assembler::xorps(dst, src); } | |
1399 void xorps(XMMRegister dst, AddressLiteral src); | |
1400 | |
1401 | |
1402 // Data | |
1403 | |
1404 void movoop(Register dst, jobject obj); | |
1405 void movoop(Address dst, jobject obj); | |
1406 | |
1407 void movptr(ArrayAddress dst, Register src); | |
1408 void movptr(Register dst, AddressLiteral src); | |
1409 | |
1410 void movptr(Register dst, intptr_t src); | |
1411 void movptr(Address dst, intptr_t src); | |
1412 | |
1413 void movptr(Register dst, ArrayAddress src); | |
1414 | |
1415 // to avoid hiding movl | |
1416 void mov32(AddressLiteral dst, Register src); | |
1417 void mov32(Register dst, AddressLiteral src); | |
1418 | |
1419 void pushoop(jobject obj); | |
1420 | |
1421 // Can push value or effective address | |
1422 void pushptr(AddressLiteral src); | |
1423 | |
1424 }; | |
1425 | |
1426 /** | |
1427 * class SkipIfEqual: | |
1428 * | |
1429 * Instantiating this class will result in assembly code being output that will | |
1430 * jump around any code emitted between the creation of the instance and it's | |
1431 * automatic destruction at the end of a scope block, depending on the value of | |
1432 * the flag passed to the constructor, which will be checked at run-time. | |
1433 */ | |
1434 class SkipIfEqual { | |
1435 private: | |
1436 MacroAssembler* _masm; | |
1437 Label _label; | |
1438 | |
1439 public: | |
1440 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value); | |
1441 ~SkipIfEqual(); | |
1442 }; | |
1443 | |
1444 | |
1445 #ifdef ASSERT | |
1446 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; } | |
1447 #endif |