Mercurial > hg > truffle
annotate src/cpu/x86/vm/assembler_x86_64.hpp @ 260:610674f963d2
Merge
author | dcubed |
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date | Thu, 31 Jul 2008 22:34:40 -0700 |
parents | d1605aabd0a1 |
children | 1ee8caae33af |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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, ... ) | |
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40 #endif // _WIN64 |
0 | 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 | |
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80 #endif // _WIN64 |
0 | 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); | |
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108 #endif // _WIN64 |
0 | 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 | |
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123 REGISTER_DECLARATION(Register, r12_heapbase, r12); // callee-saved |
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124 REGISTER_DECLARATION(Register, r15_thread, r15); // callee-saved |
0 | 125 |
126 #endif // _LP64 | |
127 | |
128 // Address is an abstraction used to represent a memory location | |
129 // using any of the amd64 addressing modes with one object. | |
130 // | |
131 // Note: A register location is represented via a Register, not | |
132 // via an address for efficiency & simplicity reasons. | |
133 | |
134 class ArrayAddress; | |
135 | |
136 class Address VALUE_OBJ_CLASS_SPEC { | |
137 public: | |
138 enum ScaleFactor { | |
139 no_scale = -1, | |
140 times_1 = 0, | |
141 times_2 = 1, | |
142 times_4 = 2, | |
143 times_8 = 3 | |
144 }; | |
145 | |
146 private: | |
147 Register _base; | |
148 Register _index; | |
149 ScaleFactor _scale; | |
150 int _disp; | |
151 RelocationHolder _rspec; | |
152 | |
153 // Easily misused constructors make them private | |
154 Address(int disp, address loc, relocInfo::relocType rtype); | |
155 Address(int disp, address loc, RelocationHolder spec); | |
156 | |
157 public: | |
158 // creation | |
159 Address() | |
160 : _base(noreg), | |
161 _index(noreg), | |
162 _scale(no_scale), | |
163 _disp(0) { | |
164 } | |
165 | |
166 // No default displacement otherwise Register can be implicitly | |
167 // converted to 0(Register) which is quite a different animal. | |
168 | |
169 Address(Register base, int disp) | |
170 : _base(base), | |
171 _index(noreg), | |
172 _scale(no_scale), | |
173 _disp(disp) { | |
174 } | |
175 | |
176 Address(Register base, Register index, ScaleFactor scale, int disp = 0) | |
177 : _base (base), | |
178 _index(index), | |
179 _scale(scale), | |
180 _disp (disp) { | |
181 assert(!index->is_valid() == (scale == Address::no_scale), | |
182 "inconsistent address"); | |
183 } | |
184 | |
185 // The following two overloads are used in connection with the | |
186 // ByteSize type (see sizes.hpp). They simplify the use of | |
187 // ByteSize'd arguments in assembly code. Note that their equivalent | |
188 // for the optimized build are the member functions with int disp | |
189 // argument since ByteSize is mapped to an int type in that case. | |
190 // | |
191 // Note: DO NOT introduce similar overloaded functions for WordSize | |
192 // arguments as in the optimized mode, both ByteSize and WordSize | |
193 // are mapped to the same type and thus the compiler cannot make a | |
194 // distinction anymore (=> compiler errors). | |
195 | |
196 #ifdef ASSERT | |
197 Address(Register base, ByteSize disp) | |
198 : _base(base), | |
199 _index(noreg), | |
200 _scale(no_scale), | |
201 _disp(in_bytes(disp)) { | |
202 } | |
203 | |
204 Address(Register base, Register index, ScaleFactor scale, ByteSize disp) | |
205 : _base(base), | |
206 _index(index), | |
207 _scale(scale), | |
208 _disp(in_bytes(disp)) { | |
209 assert(!index->is_valid() == (scale == Address::no_scale), | |
210 "inconsistent address"); | |
211 } | |
212 #endif // ASSERT | |
213 | |
214 // accessors | |
215 bool uses(Register reg) const { | |
216 return _base == reg || _index == reg; | |
217 } | |
218 | |
219 // Convert the raw encoding form into the form expected by the constructor for | |
220 // Address. An index of 4 (rsp) corresponds to having no index, so convert | |
221 // that to noreg for the Address constructor. | |
222 static Address make_raw(int base, int index, int scale, int disp); | |
223 | |
224 static Address make_array(ArrayAddress); | |
225 | |
226 private: | |
227 bool base_needs_rex() const { | |
228 return _base != noreg && _base->encoding() >= 8; | |
229 } | |
230 | |
231 bool index_needs_rex() const { | |
232 return _index != noreg &&_index->encoding() >= 8; | |
233 } | |
234 | |
235 relocInfo::relocType reloc() const { return _rspec.type(); } | |
236 | |
237 friend class Assembler; | |
238 friend class MacroAssembler; | |
239 friend class LIR_Assembler; // base/index/scale/disp | |
240 }; | |
241 | |
242 // | |
243 // AddressLiteral has been split out from Address because operands of this type | |
244 // need to be treated specially on 32bit vs. 64bit platforms. By splitting it out | |
245 // the few instructions that need to deal with address literals are unique and the | |
246 // MacroAssembler does not have to implement every instruction in the Assembler | |
247 // in order to search for address literals that may need special handling depending | |
248 // on the instruction and the platform. As small step on the way to merging i486/amd64 | |
249 // directories. | |
250 // | |
251 class AddressLiteral VALUE_OBJ_CLASS_SPEC { | |
252 friend class ArrayAddress; | |
253 RelocationHolder _rspec; | |
254 // Typically we use AddressLiterals we want to use their rval | |
255 // However in some situations we want the lval (effect address) of the item. | |
256 // We provide a special factory for making those lvals. | |
257 bool _is_lval; | |
258 | |
259 // If the target is far we'll need to load the ea of this to | |
260 // a register to reach it. Otherwise if near we can do rip | |
261 // relative addressing. | |
262 | |
263 address _target; | |
264 | |
265 protected: | |
266 // creation | |
267 AddressLiteral() | |
268 : _is_lval(false), | |
269 _target(NULL) | |
270 {} | |
271 | |
272 public: | |
273 | |
274 | |
275 AddressLiteral(address target, relocInfo::relocType rtype); | |
276 | |
277 AddressLiteral(address target, RelocationHolder const& rspec) | |
278 : _rspec(rspec), | |
279 _is_lval(false), | |
280 _target(target) | |
281 {} | |
282 | |
283 AddressLiteral addr() { | |
284 AddressLiteral ret = *this; | |
285 ret._is_lval = true; | |
286 return ret; | |
287 } | |
288 | |
289 | |
290 private: | |
291 | |
292 address target() { return _target; } | |
293 bool is_lval() { return _is_lval; } | |
294 | |
295 relocInfo::relocType reloc() const { return _rspec.type(); } | |
296 const RelocationHolder& rspec() const { return _rspec; } | |
297 | |
298 friend class Assembler; | |
299 friend class MacroAssembler; | |
300 friend class Address; | |
301 friend class LIR_Assembler; | |
302 }; | |
303 | |
304 // Convience classes | |
305 class RuntimeAddress: public AddressLiteral { | |
306 | |
307 public: | |
308 | |
309 RuntimeAddress(address target) : AddressLiteral(target, relocInfo::runtime_call_type) {} | |
310 | |
311 }; | |
312 | |
313 class OopAddress: public AddressLiteral { | |
314 | |
315 public: | |
316 | |
317 OopAddress(address target) : AddressLiteral(target, relocInfo::oop_type){} | |
318 | |
319 }; | |
320 | |
321 class ExternalAddress: public AddressLiteral { | |
322 | |
323 public: | |
324 | |
325 ExternalAddress(address target) : AddressLiteral(target, relocInfo::external_word_type){} | |
326 | |
327 }; | |
328 | |
329 class InternalAddress: public AddressLiteral { | |
330 | |
331 public: | |
332 | |
333 InternalAddress(address target) : AddressLiteral(target, relocInfo::internal_word_type) {} | |
334 | |
335 }; | |
336 | |
337 // x86 can do array addressing as a single operation since disp can be an absolute | |
338 // address but amd64 can't [e.g. array_base(rx, ry:width) ]. We create a class | |
339 // that expresses the concept but does extra magic on amd64 to get the final result | |
340 | |
341 class ArrayAddress VALUE_OBJ_CLASS_SPEC { | |
342 private: | |
343 | |
344 AddressLiteral _base; | |
345 Address _index; | |
346 | |
347 public: | |
348 | |
349 ArrayAddress() {}; | |
350 ArrayAddress(AddressLiteral base, Address index): _base(base), _index(index) {}; | |
351 AddressLiteral base() { return _base; } | |
352 Address index() { return _index; } | |
353 | |
354 }; | |
355 | |
356 // The amd64 Assembler: Pure assembler doing NO optimizations on | |
357 // the instruction level (e.g. mov rax, 0 is not translated into xor | |
358 // rax, rax!); i.e., what you write is what you get. The Assembler is | |
359 // generating code into a CodeBuffer. | |
360 | |
361 const int FPUStateSizeInWords = 512 / wordSize; | |
362 | |
363 class Assembler : public AbstractAssembler { | |
364 friend class AbstractAssembler; // for the non-virtual hack | |
365 friend class StubGenerator; | |
366 | |
367 | |
368 protected: | |
369 #ifdef ASSERT | |
370 void check_relocation(RelocationHolder const& rspec, int format); | |
371 #endif | |
372 | |
373 inline void emit_long64(jlong x); | |
374 | |
375 void emit_data(jint data, relocInfo::relocType rtype, int format /* = 1 */); | |
376 void emit_data(jint data, RelocationHolder const& rspec, int format /* = 1 */); | |
377 void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0); | |
378 void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0); | |
379 | |
380 // Helper functions for groups of instructions | |
381 void emit_arith_b(int op1, int op2, Register dst, int imm8); | |
382 | |
383 void emit_arith(int op1, int op2, Register dst, int imm32); | |
384 // only x86?? | |
385 void emit_arith(int op1, int op2, Register dst, jobject obj); | |
386 void emit_arith(int op1, int op2, Register dst, Register src); | |
387 | |
388 void emit_operand(Register reg, | |
389 Register base, Register index, Address::ScaleFactor scale, | |
390 int disp, | |
391 RelocationHolder const& rspec, | |
392 int rip_relative_correction = 0); | |
393 void emit_operand(Register reg, Address adr, | |
394 int rip_relative_correction = 0); | |
395 void emit_operand(XMMRegister reg, | |
396 Register base, Register index, Address::ScaleFactor scale, | |
397 int disp, | |
398 RelocationHolder const& rspec, | |
399 int rip_relative_correction = 0); | |
400 void emit_operand(XMMRegister reg, Address adr, | |
401 int rip_relative_correction = 0); | |
402 | |
403 // Immediate-to-memory forms | |
404 void emit_arith_operand(int op1, Register rm, Address adr, int imm32); | |
405 | |
406 void emit_farith(int b1, int b2, int i); | |
407 | |
408 bool reachable(AddressLiteral adr); | |
409 | |
410 // These are all easily abused and hence protected | |
411 | |
412 // Make these disappear in 64bit mode since they would never be correct | |
413 #ifndef _LP64 | |
414 void cmp_literal32(Register src1, int32_t imm32, RelocationHolder const& rspec); | |
415 void cmp_literal32(Address src1, int32_t imm32, RelocationHolder const& rspec); | |
416 | |
417 void mov_literal32(Register dst, int32_t imm32, RelocationHolder const& rspec); | |
418 void mov_literal32(Address dst, int32_t imm32, RelocationHolder const& rspec); | |
419 | |
420 void push_literal32(int32_t imm32, RelocationHolder const& rspec); | |
421 #endif // _LP64 | |
422 | |
423 | |
424 void mov_literal64(Register dst, intptr_t imm64, RelocationHolder const& rspec); | |
425 | |
426 // These are unique in that we are ensured by the caller that the 32bit | |
427 // relative in these instructions will always be able to reach the potentially | |
428 // 64bit address described by entry. Since they can take a 64bit address they | |
429 // don't have the 32 suffix like the other instructions in this class. | |
430 void jmp_literal(address entry, RelocationHolder const& rspec); | |
431 void call_literal(address entry, RelocationHolder const& rspec); | |
432 | |
433 public: | |
434 enum Condition { // The amd64 condition codes used for conditional jumps/moves. | |
435 zero = 0x4, | |
436 notZero = 0x5, | |
437 equal = 0x4, | |
438 notEqual = 0x5, | |
439 less = 0xc, | |
440 lessEqual = 0xe, | |
441 greater = 0xf, | |
442 greaterEqual = 0xd, | |
443 below = 0x2, | |
444 belowEqual = 0x6, | |
445 above = 0x7, | |
446 aboveEqual = 0x3, | |
447 overflow = 0x0, | |
448 noOverflow = 0x1, | |
449 carrySet = 0x2, | |
450 carryClear = 0x3, | |
451 negative = 0x8, | |
452 positive = 0x9, | |
453 parity = 0xa, | |
454 noParity = 0xb | |
455 }; | |
456 | |
457 enum Prefix { | |
458 // segment overrides | |
459 // XXX remove segment prefixes | |
460 CS_segment = 0x2e, | |
461 SS_segment = 0x36, | |
462 DS_segment = 0x3e, | |
463 ES_segment = 0x26, | |
464 FS_segment = 0x64, | |
465 GS_segment = 0x65, | |
466 | |
467 REX = 0x40, | |
468 | |
469 REX_B = 0x41, | |
470 REX_X = 0x42, | |
471 REX_XB = 0x43, | |
472 REX_R = 0x44, | |
473 REX_RB = 0x45, | |
474 REX_RX = 0x46, | |
475 REX_RXB = 0x47, | |
476 | |
477 REX_W = 0x48, | |
478 | |
479 REX_WB = 0x49, | |
480 REX_WX = 0x4A, | |
481 REX_WXB = 0x4B, | |
482 REX_WR = 0x4C, | |
483 REX_WRB = 0x4D, | |
484 REX_WRX = 0x4E, | |
485 REX_WRXB = 0x4F | |
486 }; | |
487 | |
488 enum WhichOperand { | |
489 // input to locate_operand, and format code for relocations | |
490 imm64_operand = 0, // embedded 64-bit immediate operand | |
491 disp32_operand = 1, // embedded 32-bit displacement | |
492 call32_operand = 2, // embedded 32-bit self-relative displacement | |
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493 #ifndef AMD64 |
0 | 494 _WhichOperand_limit = 3 |
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495 #else |
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496 narrow_oop_operand = 3, // embedded 32-bit immediate narrow oop |
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497 _WhichOperand_limit = 4 |
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498 #endif |
0 | 499 }; |
500 | |
501 public: | |
502 | |
503 // Creation | |
504 Assembler(CodeBuffer* code) | |
505 : AbstractAssembler(code) { | |
506 } | |
507 | |
508 // Decoding | |
509 static address locate_operand(address inst, WhichOperand which); | |
510 static address locate_next_instruction(address inst); | |
511 | |
512 // Utilities | |
513 | |
514 static bool is_simm(int64_t x, int nbits) { return -( CONST64(1) << (nbits-1) ) <= x && x < ( CONST64(1) << (nbits-1) ); } | |
515 static bool is_simm32 (int64_t x) { return x == (int64_t)(int32_t)x; } | |
516 | |
517 | |
518 // Stack | |
519 void pushaq(); | |
520 void popaq(); | |
521 | |
522 void pushfq(); | |
523 void popfq(); | |
524 | |
525 void pushq(int imm32); | |
526 | |
527 void pushq(Register src); | |
528 void pushq(Address src); | |
529 | |
530 void popq(Register dst); | |
531 void popq(Address dst); | |
532 | |
533 // Instruction prefixes | |
534 void prefix(Prefix p); | |
535 | |
536 int prefix_and_encode(int reg_enc, bool byteinst = false); | |
537 int prefixq_and_encode(int reg_enc); | |
538 | |
539 int prefix_and_encode(int dst_enc, int src_enc, bool byteinst = false); | |
540 int prefixq_and_encode(int dst_enc, int src_enc); | |
541 | |
542 void prefix(Register reg); | |
543 void prefix(Address adr); | |
544 void prefixq(Address adr); | |
545 | |
546 void prefix(Address adr, Register reg, bool byteinst = false); | |
547 void prefixq(Address adr, Register reg); | |
548 | |
549 void prefix(Address adr, XMMRegister reg); | |
550 | |
551 // Moves | |
552 void movb(Register dst, Address src); | |
553 void movb(Address dst, int imm8); | |
554 void movb(Address dst, Register src); | |
555 | |
556 void movw(Address dst, int imm16); | |
557 void movw(Register dst, Address src); | |
558 void movw(Address dst, Register src); | |
559 | |
560 void movl(Register dst, int imm32); | |
561 void movl(Register dst, Register src); | |
562 void movl(Register dst, Address src); | |
563 void movl(Address dst, int imm32); | |
564 void movl(Address dst, Register src); | |
565 | |
566 void movq(Register dst, Register src); | |
567 void movq(Register dst, Address src); | |
568 void movq(Address dst, Register src); | |
569 // These prevent using movq from converting a zero (like NULL) into Register | |
570 // by giving the compiler two choices it can't resolve | |
571 void movq(Address dst, void* dummy); | |
572 void movq(Register dst, void* dummy); | |
573 | |
574 void mov64(Register dst, intptr_t imm64); | |
575 void mov64(Address dst, intptr_t imm64); | |
576 | |
577 void movsbl(Register dst, Address src); | |
578 void movsbl(Register dst, Register src); | |
579 void movswl(Register dst, Address src); | |
580 void movswl(Register dst, Register src); | |
581 void movslq(Register dst, Address src); | |
582 void movslq(Register dst, Register src); | |
583 | |
584 void movzbl(Register dst, Address src); | |
585 void movzbl(Register dst, Register src); | |
586 void movzwl(Register dst, Address src); | |
587 void movzwl(Register dst, Register src); | |
588 | |
589 protected: // Avoid using the next instructions directly. | |
590 // New cpus require use of movsd and movss to avoid partial register stall | |
591 // when loading from memory. But for old Opteron use movlpd instead of movsd. | |
592 // The selection is done in MacroAssembler::movdbl() and movflt(). | |
593 void movss(XMMRegister dst, XMMRegister src); | |
594 void movss(XMMRegister dst, Address src); | |
595 void movss(Address dst, XMMRegister src); | |
596 void movsd(XMMRegister dst, XMMRegister src); | |
597 void movsd(Address dst, XMMRegister src); | |
598 void movsd(XMMRegister dst, Address src); | |
599 void movlpd(XMMRegister dst, Address src); | |
600 // New cpus require use of movaps and movapd to avoid partial register stall | |
601 // when moving between registers. | |
602 void movapd(XMMRegister dst, XMMRegister src); | |
603 void movaps(XMMRegister dst, XMMRegister src); | |
604 public: | |
605 | |
606 void movdl(XMMRegister dst, Register src); | |
607 void movdl(Register dst, XMMRegister src); | |
608 void movdq(XMMRegister dst, Register src); | |
609 void movdq(Register dst, XMMRegister src); | |
610 | |
611 void cmovl(Condition cc, Register dst, Register src); | |
612 void cmovl(Condition cc, Register dst, Address src); | |
613 void cmovq(Condition cc, Register dst, Register src); | |
614 void cmovq(Condition cc, Register dst, Address src); | |
615 | |
616 // Prefetches | |
617 private: | |
618 void prefetch_prefix(Address src); | |
619 public: | |
620 void prefetcht0(Address src); | |
621 void prefetcht1(Address src); | |
622 void prefetcht2(Address src); | |
623 void prefetchnta(Address src); | |
624 void prefetchw(Address src); | |
625 | |
626 // Arithmetics | |
627 void adcl(Register dst, int imm32); | |
628 void adcl(Register dst, Address src); | |
629 void adcl(Register dst, Register src); | |
630 void adcq(Register dst, int imm32); | |
631 void adcq(Register dst, Address src); | |
632 void adcq(Register dst, Register src); | |
633 | |
634 void addl(Address dst, int imm32); | |
635 void addl(Address dst, Register src); | |
636 void addl(Register dst, int imm32); | |
637 void addl(Register dst, Address src); | |
638 void addl(Register dst, Register src); | |
639 void addq(Address dst, int imm32); | |
640 void addq(Address dst, Register src); | |
641 void addq(Register dst, int imm32); | |
642 void addq(Register dst, Address src); | |
643 void addq(Register dst, Register src); | |
644 | |
645 void andl(Register dst, int imm32); | |
646 void andl(Register dst, Address src); | |
647 void andl(Register dst, Register src); | |
648 void andq(Register dst, int imm32); | |
649 void andq(Register dst, Address src); | |
650 void andq(Register dst, Register src); | |
651 | |
652 void cmpb(Address dst, int imm8); | |
653 void cmpl(Address dst, int imm32); | |
654 void cmpl(Register dst, int imm32); | |
655 void cmpl(Register dst, Register src); | |
656 void cmpl(Register dst, Address src); | |
657 void cmpq(Address dst, int imm32); | |
658 void cmpq(Address dst, Register src); | |
659 void cmpq(Register dst, int imm32); | |
660 void cmpq(Register dst, Register src); | |
661 void cmpq(Register dst, Address src); | |
662 | |
663 void ucomiss(XMMRegister dst, XMMRegister src); | |
664 void ucomisd(XMMRegister dst, XMMRegister src); | |
665 | |
666 protected: | |
667 // Don't use next inc() and dec() methods directly. INC & DEC instructions | |
668 // could cause a partial flag stall since they don't set CF flag. | |
669 // Use MacroAssembler::decrement() & MacroAssembler::increment() methods | |
670 // which call inc() & dec() or add() & sub() in accordance with | |
671 // the product flag UseIncDec value. | |
672 | |
673 void decl(Register dst); | |
674 void decl(Address dst); | |
675 void decq(Register dst); | |
676 void decq(Address dst); | |
677 | |
678 void incl(Register dst); | |
679 void incl(Address dst); | |
680 void incq(Register dst); | |
681 void incq(Address dst); | |
682 | |
683 public: | |
684 void idivl(Register src); | |
685 void idivq(Register src); | |
686 void cdql(); | |
687 void cdqq(); | |
688 | |
689 void imull(Register dst, Register src); | |
690 void imull(Register dst, Register src, int value); | |
691 void imulq(Register dst, Register src); | |
692 void imulq(Register dst, Register src, int value); | |
693 | |
694 void leal(Register dst, Address src); | |
695 void leaq(Register dst, Address src); | |
696 | |
697 void mull(Address src); | |
698 void mull(Register src); | |
699 | |
700 void negl(Register dst); | |
701 void negq(Register dst); | |
702 | |
703 void notl(Register dst); | |
704 void notq(Register dst); | |
705 | |
706 void orl(Address dst, int imm32); | |
707 void orl(Register dst, int imm32); | |
708 void orl(Register dst, Address src); | |
709 void orl(Register dst, Register src); | |
710 void orq(Address dst, int imm32); | |
711 void orq(Register dst, int imm32); | |
712 void orq(Register dst, Address src); | |
713 void orq(Register dst, Register src); | |
714 | |
715 void rcll(Register dst, int imm8); | |
716 void rclq(Register dst, int imm8); | |
717 | |
718 void sarl(Register dst, int imm8); | |
719 void sarl(Register dst); | |
720 void sarq(Register dst, int imm8); | |
721 void sarq(Register dst); | |
722 | |
723 void sbbl(Address dst, int imm32); | |
724 void sbbl(Register dst, int imm32); | |
725 void sbbl(Register dst, Address src); | |
726 void sbbl(Register dst, Register src); | |
727 void sbbq(Address dst, int imm32); | |
728 void sbbq(Register dst, int imm32); | |
729 void sbbq(Register dst, Address src); | |
730 void sbbq(Register dst, Register src); | |
731 | |
732 void shll(Register dst, int imm8); | |
733 void shll(Register dst); | |
734 void shlq(Register dst, int imm8); | |
735 void shlq(Register dst); | |
736 | |
737 void shrl(Register dst, int imm8); | |
738 void shrl(Register dst); | |
739 void shrq(Register dst, int imm8); | |
740 void shrq(Register dst); | |
741 | |
742 void subl(Address dst, int imm32); | |
743 void subl(Address dst, Register src); | |
744 void subl(Register dst, int imm32); | |
745 void subl(Register dst, Address src); | |
746 void subl(Register dst, Register src); | |
747 void subq(Address dst, int imm32); | |
748 void subq(Address dst, Register src); | |
749 void subq(Register dst, int imm32); | |
750 void subq(Register dst, Address src); | |
751 void subq(Register dst, Register src); | |
752 | |
753 void testb(Register dst, int imm8); | |
754 void testl(Register dst, int imm32); | |
755 void testl(Register dst, Register src); | |
756 void testq(Register dst, int imm32); | |
757 void testq(Register dst, Register src); | |
758 | |
759 void xaddl(Address dst, Register src); | |
760 void xaddq(Address dst, Register src); | |
761 | |
762 void xorl(Register dst, int imm32); | |
763 void xorl(Register dst, Address src); | |
764 void xorl(Register dst, Register src); | |
765 void xorq(Register dst, int imm32); | |
766 void xorq(Register dst, Address src); | |
767 void xorq(Register dst, Register src); | |
768 | |
769 // Miscellaneous | |
770 void bswapl(Register reg); | |
771 void bswapq(Register reg); | |
772 void lock(); | |
773 | |
774 void xchgl(Register reg, Address adr); | |
775 void xchgl(Register dst, Register src); | |
776 void xchgq(Register reg, Address adr); | |
777 void xchgq(Register dst, Register src); | |
778 | |
779 void cmpxchgl(Register reg, Address adr); | |
780 void cmpxchgq(Register reg, Address adr); | |
781 | |
782 void nop(int i = 1); | |
783 void addr_nop_4(); | |
784 void addr_nop_5(); | |
785 void addr_nop_7(); | |
786 void addr_nop_8(); | |
787 | |
788 void hlt(); | |
789 void ret(int imm16); | |
790 void smovl(); | |
791 void rep_movl(); | |
792 void rep_movq(); | |
793 void rep_set(); | |
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794 void repne_scanl(); |
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795 void repne_scanq(); |
0 | 796 void setb(Condition cc, Register dst); |
797 | |
798 void clflush(Address adr); | |
799 | |
800 enum Membar_mask_bits { | |
801 StoreStore = 1 << 3, | |
802 LoadStore = 1 << 2, | |
803 StoreLoad = 1 << 1, | |
804 LoadLoad = 1 << 0 | |
805 }; | |
806 | |
807 // Serializes memory. | |
808 void membar(Membar_mask_bits order_constraint) { | |
809 // We only have to handle StoreLoad and LoadLoad | |
810 if (order_constraint & StoreLoad) { | |
811 // MFENCE subsumes LFENCE | |
812 mfence(); | |
813 } /* [jk] not needed currently: else if (order_constraint & LoadLoad) { | |
814 lfence(); | |
815 } */ | |
816 } | |
817 | |
818 void lfence() { | |
819 emit_byte(0x0F); | |
820 emit_byte(0xAE); | |
821 emit_byte(0xE8); | |
822 } | |
823 | |
824 void mfence() { | |
825 emit_byte(0x0F); | |
826 emit_byte(0xAE); | |
827 emit_byte(0xF0); | |
828 } | |
829 | |
830 // Identify processor type and features | |
831 void cpuid() { | |
832 emit_byte(0x0F); | |
833 emit_byte(0xA2); | |
834 } | |
835 | |
836 void cld() { emit_byte(0xfc); | |
837 } | |
838 | |
839 void std() { emit_byte(0xfd); | |
840 } | |
841 | |
842 | |
843 // Calls | |
844 | |
845 void call(Label& L, relocInfo::relocType rtype); | |
846 void call(Register reg); | |
847 void call(Address adr); | |
848 | |
849 // Jumps | |
850 | |
851 void jmp(Register reg); | |
852 void jmp(Address adr); | |
853 | |
854 // Label operations & relative jumps (PPUM Appendix D) | |
855 // unconditional jump to L | |
856 void jmp(Label& L, relocInfo::relocType rtype = relocInfo::none); | |
857 | |
858 | |
859 // Unconditional 8-bit offset jump to L. | |
860 // WARNING: be very careful using this for forward jumps. If the label is | |
861 // not bound within an 8-bit offset of this instruction, a run-time error | |
862 // will occur. | |
863 void jmpb(Label& L); | |
864 | |
865 // jcc is the generic conditional branch generator to run- time | |
866 // routines, jcc is used for branches to labels. jcc takes a branch | |
867 // opcode (cc) and a label (L) and generates either a backward | |
868 // branch or a forward branch and links it to the label fixup | |
869 // chain. Usage: | |
870 // | |
871 // Label L; // unbound label | |
872 // jcc(cc, L); // forward branch to unbound label | |
873 // bind(L); // bind label to the current pc | |
874 // jcc(cc, L); // backward branch to bound label | |
875 // bind(L); // illegal: a label may be bound only once | |
876 // | |
877 // Note: The same Label can be used for forward and backward branches | |
878 // but it may be bound only once. | |
879 | |
880 void jcc(Condition cc, Label& L, | |
881 relocInfo::relocType rtype = relocInfo::none); | |
882 | |
883 // Conditional jump to a 8-bit offset to L. | |
884 // WARNING: be very careful using this for forward jumps. If the label is | |
885 // not bound within an 8-bit offset of this instruction, a run-time error | |
886 // will occur. | |
887 void jccb(Condition cc, Label& L); | |
888 | |
889 // Floating-point operations | |
890 | |
891 void fxsave(Address dst); | |
892 void fxrstor(Address src); | |
893 void ldmxcsr(Address src); | |
894 void stmxcsr(Address dst); | |
895 | |
896 void addss(XMMRegister dst, XMMRegister src); | |
897 void addss(XMMRegister dst, Address src); | |
898 void subss(XMMRegister dst, XMMRegister src); | |
899 void subss(XMMRegister dst, Address src); | |
900 void mulss(XMMRegister dst, XMMRegister src); | |
901 void mulss(XMMRegister dst, Address src); | |
902 void divss(XMMRegister dst, XMMRegister src); | |
903 void divss(XMMRegister dst, Address src); | |
904 void addsd(XMMRegister dst, XMMRegister src); | |
905 void addsd(XMMRegister dst, Address src); | |
906 void subsd(XMMRegister dst, XMMRegister src); | |
907 void subsd(XMMRegister dst, Address src); | |
908 void mulsd(XMMRegister dst, XMMRegister src); | |
909 void mulsd(XMMRegister dst, Address src); | |
910 void divsd(XMMRegister dst, XMMRegister src); | |
911 void divsd(XMMRegister dst, Address src); | |
912 | |
913 // We only need the double form | |
914 void sqrtsd(XMMRegister dst, XMMRegister src); | |
915 void sqrtsd(XMMRegister dst, Address src); | |
916 | |
917 void xorps(XMMRegister dst, XMMRegister src); | |
918 void xorps(XMMRegister dst, Address src); | |
919 void xorpd(XMMRegister dst, XMMRegister src); | |
920 void xorpd(XMMRegister dst, Address src); | |
921 | |
922 void cvtsi2ssl(XMMRegister dst, Register src); | |
923 void cvtsi2ssq(XMMRegister dst, Register src); | |
924 void cvtsi2sdl(XMMRegister dst, Register src); | |
925 void cvtsi2sdq(XMMRegister dst, Register src); | |
926 void cvttss2sil(Register dst, XMMRegister src); // truncates | |
927 void cvttss2siq(Register dst, XMMRegister src); // truncates | |
928 void cvttsd2sil(Register dst, XMMRegister src); // truncates | |
929 void cvttsd2siq(Register dst, XMMRegister src); // truncates | |
930 void cvtss2sd(XMMRegister dst, XMMRegister src); | |
931 void cvtsd2ss(XMMRegister dst, XMMRegister src); | |
71 | 932 void cvtdq2pd(XMMRegister dst, XMMRegister src); |
933 void cvtdq2ps(XMMRegister dst, XMMRegister src); | |
0 | 934 |
935 void pxor(XMMRegister dst, Address src); // Xor Packed Byte Integer Values | |
936 void pxor(XMMRegister dst, XMMRegister src); // Xor Packed Byte Integer Values | |
937 | |
938 void movdqa(XMMRegister dst, Address src); // Move Aligned Double Quadword | |
939 void movdqa(XMMRegister dst, XMMRegister src); | |
940 void movdqa(Address dst, XMMRegister src); | |
941 | |
942 void movq(XMMRegister dst, Address src); | |
943 void movq(Address dst, XMMRegister src); | |
944 | |
945 void pshufd(XMMRegister dst, XMMRegister src, int mode); // Shuffle Packed Doublewords | |
946 void pshufd(XMMRegister dst, Address src, int mode); | |
947 void pshuflw(XMMRegister dst, XMMRegister src, int mode); // Shuffle Packed Low Words | |
948 void pshuflw(XMMRegister dst, Address src, int mode); | |
949 | |
950 void psrlq(XMMRegister dst, int shift); // Shift Right Logical Quadword Immediate | |
951 | |
952 void punpcklbw(XMMRegister dst, XMMRegister src); // Interleave Low Bytes | |
953 void punpcklbw(XMMRegister dst, Address src); | |
954 }; | |
955 | |
956 | |
957 // MacroAssembler extends Assembler by frequently used macros. | |
958 // | |
959 // Instructions for which a 'better' code sequence exists depending | |
960 // on arguments should also go in here. | |
961 | |
962 class MacroAssembler : public Assembler { | |
963 friend class LIR_Assembler; | |
964 protected: | |
965 | |
966 Address as_Address(AddressLiteral adr); | |
967 Address as_Address(ArrayAddress adr); | |
968 | |
969 // Support for VM calls | |
970 // | |
971 // This is the base routine called by the different versions of | |
972 // call_VM_leaf. The interpreter may customize this version by | |
973 // overriding it for its purposes (e.g., to save/restore additional | |
974 // registers when doing a VM call). | |
975 | |
976 virtual void call_VM_leaf_base( | |
977 address entry_point, // the entry point | |
978 int number_of_arguments // the number of arguments to | |
979 // pop after the call | |
980 ); | |
981 | |
982 // This is the base routine called by the different versions of | |
983 // call_VM. The interpreter may customize this version by overriding | |
984 // it for its purposes (e.g., to save/restore additional registers | |
985 // when doing a VM call). | |
986 // | |
987 // If no java_thread register is specified (noreg) than rdi will be | |
988 // used instead. call_VM_base returns the register which contains | |
989 // the thread upon return. If a thread register has been specified, | |
990 // the return value will correspond to that register. If no | |
991 // last_java_sp is specified (noreg) than rsp will be used instead. | |
992 virtual void call_VM_base( // returns the register | |
993 // containing the thread upon | |
994 // return | |
995 Register oop_result, // where an oop-result ends up | |
996 // if any; use noreg otherwise | |
997 Register java_thread, // the thread if computed | |
998 // before ; use noreg otherwise | |
999 Register last_java_sp, // to set up last_Java_frame in | |
1000 // stubs; use noreg otherwise | |
1001 address entry_point, // the entry point | |
1002 int number_of_arguments, // the number of arguments (w/o | |
1003 // thread) to pop after the | |
1004 // call | |
1005 bool check_exceptions // whether to check for pending | |
1006 // exceptions after return | |
1007 ); | |
1008 | |
1009 // This routines should emit JVMTI PopFrame handling and ForceEarlyReturn code. | |
1010 // The implementation is only non-empty for the InterpreterMacroAssembler, | |
1011 // as only the interpreter handles PopFrame and ForceEarlyReturn requests. | |
1012 virtual void check_and_handle_popframe(Register java_thread); | |
1013 virtual void check_and_handle_earlyret(Register java_thread); | |
1014 | |
1015 void call_VM_helper(Register oop_result, | |
1016 address entry_point, | |
1017 int number_of_arguments, | |
1018 bool check_exceptions = true); | |
1019 | |
1020 public: | |
1021 MacroAssembler(CodeBuffer* code) : Assembler(code) {} | |
1022 | |
1023 // Support for NULL-checks | |
1024 // | |
1025 // Generates code that causes a NULL OS exception if the content of | |
1026 // reg is NULL. If the accessed location is M[reg + offset] and the | |
1027 // offset is known, provide the offset. No explicit code generation | |
1028 // is needed if the offset is within a certain range (0 <= offset <= | |
1029 // page_size). | |
1030 void null_check(Register reg, int offset = -1); | |
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1031 static bool needs_explicit_null_check(intptr_t offset); |
0 | 1032 |
1033 // Required platform-specific helpers for Label::patch_instructions. | |
1034 // They _shadow_ the declarations in AbstractAssembler, which are undefined. | |
1035 void pd_patch_instruction(address branch, address target); | |
1036 #ifndef PRODUCT | |
1037 static void pd_print_patched_instruction(address branch); | |
1038 #endif | |
1039 | |
1040 | |
1041 // The following 4 methods return the offset of the appropriate move | |
1042 // instruction. Note: these are 32 bit instructions | |
1043 | |
1044 // Support for fast byte/word loading with zero extension (depending | |
1045 // on particular CPU) | |
1046 int load_unsigned_byte(Register dst, Address src); | |
1047 int load_unsigned_word(Register dst, Address src); | |
1048 | |
1049 // Support for fast byte/word loading with sign extension (depending | |
1050 // on particular CPU) | |
1051 int load_signed_byte(Register dst, Address src); | |
1052 int load_signed_word(Register dst, Address src); | |
1053 | |
1054 // Support for inc/dec with optimal instruction selection depending | |
1055 // on value | |
1056 void incrementl(Register reg, int value = 1); | |
1057 void decrementl(Register reg, int value = 1); | |
1058 void incrementq(Register reg, int value = 1); | |
1059 void decrementq(Register reg, int value = 1); | |
1060 | |
1061 void incrementl(Address dst, int value = 1); | |
1062 void decrementl(Address dst, int value = 1); | |
1063 void incrementq(Address dst, int value = 1); | |
1064 void decrementq(Address dst, int value = 1); | |
1065 | |
1066 // Support optimal SSE move instructions. | |
1067 void movflt(XMMRegister dst, XMMRegister src) { | |
1068 if (UseXmmRegToRegMoveAll) { movaps(dst, src); return; } | |
1069 else { movss (dst, src); return; } | |
1070 } | |
1071 | |
1072 void movflt(XMMRegister dst, Address src) { movss(dst, src); } | |
1073 | |
1074 void movflt(XMMRegister dst, AddressLiteral src); | |
1075 | |
1076 void movflt(Address dst, XMMRegister src) { movss(dst, src); } | |
1077 | |
1078 void movdbl(XMMRegister dst, XMMRegister src) { | |
1079 if (UseXmmRegToRegMoveAll) { movapd(dst, src); return; } | |
1080 else { movsd (dst, src); return; } | |
1081 } | |
1082 | |
1083 void movdbl(XMMRegister dst, AddressLiteral src); | |
1084 | |
1085 void movdbl(XMMRegister dst, Address src) { | |
1086 if (UseXmmLoadAndClearUpper) { movsd (dst, src); return; } | |
1087 else { movlpd(dst, src); return; } | |
1088 } | |
1089 | |
1090 void movdbl(Address dst, XMMRegister src) { movsd(dst, src); } | |
1091 | |
1092 void incrementl(AddressLiteral dst); | |
1093 void incrementl(ArrayAddress dst); | |
1094 | |
1095 // Alignment | |
1096 void align(int modulus); | |
1097 | |
1098 // Misc | |
1099 void fat_nop(); // 5 byte nop | |
1100 | |
1101 | |
1102 // C++ bool manipulation | |
1103 | |
1104 void movbool(Register dst, Address src); | |
1105 void movbool(Address dst, bool boolconst); | |
1106 void movbool(Address dst, Register src); | |
1107 void testbool(Register dst); | |
1108 | |
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1109 // oop manipulations |
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1110 void load_klass(Register dst, Register src); |
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1111 void store_klass(Register dst, Register src); |
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1112 void store_klass_gap(Register dst, Register src); |
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1113 |
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1114 void load_prototype_header(Register dst, Register src); |
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1115 |
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1116 void load_heap_oop(Register dst, Address src); |
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1117 void store_heap_oop(Address dst, Register src); |
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1118 void encode_heap_oop(Register r); |
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1119 void decode_heap_oop(Register r); |
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1120 void encode_heap_oop_not_null(Register r); |
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1121 void decode_heap_oop_not_null(Register r); |
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1122 void encode_heap_oop_not_null(Register dst, Register src); |
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1123 void decode_heap_oop_not_null(Register dst, Register src); |
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1124 |
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1125 void set_narrow_oop(Register dst, jobject obj); |
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1126 |
0 | 1127 // Stack frame creation/removal |
1128 void enter(); | |
1129 void leave(); | |
1130 | |
1131 // Support for getting the JavaThread pointer (i.e.; a reference to | |
1132 // thread-local information) The pointer will be loaded into the | |
1133 // thread register. | |
1134 void get_thread(Register thread); | |
1135 | |
1136 void int3(); | |
1137 | |
1138 // Support for VM calls | |
1139 // | |
1140 // It is imperative that all calls into the VM are handled via the | |
1141 // call_VM macros. They make sure that the stack linkage is setup | |
1142 // correctly. call_VM's correspond to ENTRY/ENTRY_X entry points | |
1143 // while call_VM_leaf's correspond to LEAF entry points. | |
1144 void call_VM(Register oop_result, | |
1145 address entry_point, | |
1146 bool check_exceptions = true); | |
1147 void call_VM(Register oop_result, | |
1148 address entry_point, | |
1149 Register arg_1, | |
1150 bool check_exceptions = true); | |
1151 void call_VM(Register oop_result, | |
1152 address entry_point, | |
1153 Register arg_1, Register arg_2, | |
1154 bool check_exceptions = true); | |
1155 void call_VM(Register oop_result, | |
1156 address entry_point, | |
1157 Register arg_1, Register arg_2, Register arg_3, | |
1158 bool check_exceptions = true); | |
1159 | |
1160 // Overloadings with last_Java_sp | |
1161 void call_VM(Register oop_result, | |
1162 Register last_java_sp, | |
1163 address entry_point, | |
1164 int number_of_arguments = 0, | |
1165 bool check_exceptions = true); | |
1166 void call_VM(Register oop_result, | |
1167 Register last_java_sp, | |
1168 address entry_point, | |
1169 Register arg_1, bool | |
1170 check_exceptions = true); | |
1171 void call_VM(Register oop_result, | |
1172 Register last_java_sp, | |
1173 address entry_point, | |
1174 Register arg_1, Register arg_2, | |
1175 bool check_exceptions = true); | |
1176 void call_VM(Register oop_result, | |
1177 Register last_java_sp, | |
1178 address entry_point, | |
1179 Register arg_1, Register arg_2, Register arg_3, | |
1180 bool check_exceptions = true); | |
1181 | |
1182 void call_VM_leaf(address entry_point, | |
1183 int number_of_arguments = 0); | |
1184 void call_VM_leaf(address entry_point, | |
1185 Register arg_1); | |
1186 void call_VM_leaf(address entry_point, | |
1187 Register arg_1, Register arg_2); | |
1188 void call_VM_leaf(address entry_point, | |
1189 Register arg_1, Register arg_2, Register arg_3); | |
1190 | |
1191 // last Java Frame (fills frame anchor) | |
1192 void set_last_Java_frame(Register last_java_sp, | |
1193 Register last_java_fp, | |
1194 address last_java_pc); | |
1195 void reset_last_Java_frame(bool clear_fp, bool clear_pc); | |
1196 | |
1197 // Stores | |
1198 void store_check(Register obj); // store check for | |
1199 // obj - register is | |
1200 // destroyed | |
1201 // afterwards | |
1202 void store_check(Register obj, Address dst); // same as above, dst | |
1203 // is exact store | |
1204 // location (reg. is | |
1205 // destroyed) | |
1206 | |
1207 // split store_check(Register obj) to enhance instruction interleaving | |
1208 void store_check_part_1(Register obj); | |
1209 void store_check_part_2(Register obj); | |
1210 | |
1211 // C 'boolean' to Java boolean: x == 0 ? 0 : 1 | |
1212 void c2bool(Register x); | |
1213 | |
1214 // Int division/reminder for Java | |
1215 // (as idivl, but checks for special case as described in JVM spec.) | |
1216 // returns idivl instruction offset for implicit exception handling | |
1217 int corrected_idivl(Register reg); | |
1218 // Long division/reminder for Java | |
1219 // (as idivq, but checks for special case as described in JVM spec.) | |
1220 // returns idivq instruction offset for implicit exception handling | |
1221 int corrected_idivq(Register reg); | |
1222 | |
1223 // Push and pop integer/fpu/cpu state | |
1224 void push_IU_state(); | |
1225 void pop_IU_state(); | |
1226 | |
1227 void push_FPU_state(); | |
1228 void pop_FPU_state(); | |
1229 | |
1230 void push_CPU_state(); | |
1231 void pop_CPU_state(); | |
1232 | |
1233 // Sign extension | |
1234 void sign_extend_short(Register reg); | |
1235 void sign_extend_byte(Register reg); | |
1236 | |
1237 // Division by power of 2, rounding towards 0 | |
1238 void division_with_shift(Register reg, int shift_value); | |
1239 | |
1240 // Round up to a power of two | |
1241 void round_to_l(Register reg, int modulus); | |
1242 void round_to_q(Register reg, int modulus); | |
1243 | |
1244 // allocation | |
1245 void eden_allocate( | |
1246 Register obj, // result: pointer to object after | |
1247 // successful allocation | |
1248 Register var_size_in_bytes, // object size in bytes if unknown at | |
1249 // compile time; invalid otherwise | |
1250 int con_size_in_bytes, // object size in bytes if known at | |
1251 // compile time | |
1252 Register t1, // temp register | |
1253 Label& slow_case // continuation point if fast | |
1254 // allocation fails | |
1255 ); | |
1256 void tlab_allocate( | |
1257 Register obj, // result: pointer to object after | |
1258 // successful allocation | |
1259 Register var_size_in_bytes, // object size in bytes if unknown at | |
1260 // compile time; invalid otherwise | |
1261 int con_size_in_bytes, // object size in bytes if known at | |
1262 // compile time | |
1263 Register t1, // temp register | |
1264 Register t2, // temp register | |
1265 Label& slow_case // continuation point if fast | |
1266 // allocation fails | |
1267 ); | |
1268 void tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case); | |
1269 | |
1270 //---- | |
1271 | |
1272 // Debugging | |
1273 | |
1274 // only if +VerifyOops | |
1275 void verify_oop(Register reg, const char* s = "broken oop"); | |
1276 void verify_oop_addr(Address addr, const char * s = "broken oop addr"); | |
1277 | |
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1278 // if heap base register is used - reinit it with the correct value |
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1279 void reinit_heapbase(); |
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1280 |
0 | 1281 // only if +VerifyFPU |
1282 void verify_FPU(int stack_depth, const char* s = "illegal FPU state") {} | |
1283 | |
1284 // prints msg, dumps registers and stops execution | |
1285 void stop(const char* msg); | |
1286 | |
1287 // prints message and continues | |
1288 void warn(const char* msg); | |
1289 | |
1290 static void debug(char* msg, int64_t pc, int64_t regs[]); | |
1291 | |
1292 void os_breakpoint(); | |
1293 | |
1294 void untested() | |
1295 { | |
1296 stop("untested"); | |
1297 } | |
1298 | |
1299 void unimplemented(const char* what = "") | |
1300 { | |
1301 char* b = new char[1024]; | |
1302 sprintf(b, "unimplemented: %s", what); | |
1303 stop(b); | |
1304 } | |
1305 | |
1306 void should_not_reach_here() | |
1307 { | |
1308 stop("should not reach here"); | |
1309 } | |
1310 | |
1311 // Stack overflow checking | |
1312 void bang_stack_with_offset(int offset) | |
1313 { | |
1314 // stack grows down, caller passes positive offset | |
1315 assert(offset > 0, "must bang with negative offset"); | |
1316 movl(Address(rsp, (-offset)), rax); | |
1317 } | |
1318 | |
1319 // Writes to stack successive pages until offset reached to check for | |
1320 // stack overflow + shadow pages. Also, clobbers tmp | |
1321 void bang_stack_size(Register offset, Register tmp); | |
1322 | |
1323 // Support for serializing memory accesses between threads. | |
1324 void serialize_memory(Register thread, Register tmp); | |
1325 | |
1326 void verify_tlab(); | |
1327 | |
1328 // Biased locking support | |
1329 // lock_reg and obj_reg must be loaded up with the appropriate values. | |
1330 // swap_reg must be rax and is killed. | |
1331 // tmp_reg must be supplied and is killed. | |
1332 // If swap_reg_contains_mark is true then the code assumes that the | |
1333 // mark word of the object has already been loaded into swap_reg. | |
1334 // Optional slow case is for implementations (interpreter and C1) which branch to | |
1335 // slow case directly. Leaves condition codes set for C2's Fast_Lock node. | |
1336 // Returns offset of first potentially-faulting instruction for null | |
1337 // check info (currently consumed only by C1). If | |
1338 // swap_reg_contains_mark is true then returns -1 as it is assumed | |
1339 // the calling code has already passed any potential faults. | |
1340 int biased_locking_enter(Register lock_reg, Register obj_reg, Register swap_reg, Register tmp_reg, | |
1341 bool swap_reg_contains_mark, | |
1342 Label& done, Label* slow_case = NULL, | |
1343 BiasedLockingCounters* counters = NULL); | |
1344 void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done); | |
1345 | |
1346 Condition negate_condition(Condition cond); | |
1347 | |
1348 // Instructions that use AddressLiteral operands. These instruction can handle 32bit/64bit | |
1349 // operands. In general the names are modified to avoid hiding the instruction in Assembler | |
1350 // so that we don't need to implement all the varieties in the Assembler with trivial wrappers | |
1351 // here in MacroAssembler. The major exception to this rule is call | |
1352 | |
1353 // Arithmetics | |
1354 | |
1355 void cmp8(AddressLiteral src1, int8_t imm32); | |
1356 | |
1357 void cmp32(AddressLiteral src1, int32_t src2); | |
1358 // compare reg - mem, or reg - &mem | |
1359 void cmp32(Register src1, AddressLiteral src2); | |
1360 | |
1361 void cmp32(Register src1, Address src2); | |
1362 | |
1363 #ifndef _LP64 | |
1364 void cmpoop(Address dst, jobject obj); | |
1365 void cmpoop(Register dst, jobject obj); | |
1366 #endif // _LP64 | |
1367 | |
1368 // NOTE src2 must be the lval. This is NOT an mem-mem compare | |
1369 void cmpptr(Address src1, AddressLiteral src2); | |
1370 | |
1371 void cmpptr(Register src1, AddressLiteral src); | |
1372 | |
1373 // will be cmpreg(?) | |
1374 void cmp64(Register src1, AddressLiteral src); | |
1375 | |
1376 void cmpxchgptr(Register reg, Address adr); | |
1377 void cmpxchgptr(Register reg, AddressLiteral adr); | |
1378 | |
1379 // Helper functions for statistics gathering. | |
1380 // Conditionally (atomically, on MPs) increments passed counter address, preserving condition codes. | |
1381 void cond_inc32(Condition cond, AddressLiteral counter_addr); | |
1382 // Unconditional atomic increment. | |
1383 void atomic_incl(AddressLiteral counter_addr); | |
1384 | |
1385 | |
1386 void lea(Register dst, AddressLiteral src); | |
1387 void lea(Register dst, Address src); | |
1388 | |
1389 | |
1390 // Calls | |
1391 void call(Label& L, relocInfo::relocType rtype); | |
1392 void call(Register entry); | |
1393 void call(AddressLiteral entry); | |
1394 | |
1395 // Jumps | |
1396 | |
1397 // 32bit can do a case table jump in one instruction but we no longer allow the base | |
1398 // to be installed in the Address class | |
1399 void jump(ArrayAddress entry); | |
1400 | |
1401 void jump(AddressLiteral entry); | |
1402 void jump_cc(Condition cc, AddressLiteral dst); | |
1403 | |
1404 // Floating | |
1405 | |
1406 void ldmxcsr(Address src) { Assembler::ldmxcsr(src); } | |
1407 void ldmxcsr(AddressLiteral src); | |
1408 | |
1409 private: | |
1410 // these are private because users should be doing movflt/movdbl | |
1411 | |
1412 void movss(XMMRegister dst, XMMRegister src) { Assembler::movss(dst, src); } | |
1413 void movss(Address dst, XMMRegister src) { Assembler::movss(dst, src); } | |
1414 void movss(XMMRegister dst, Address src) { Assembler::movss(dst, src); } | |
1415 void movss(XMMRegister dst, AddressLiteral src); | |
1416 | |
1417 void movlpd(XMMRegister dst, Address src) {Assembler::movlpd(dst, src); } | |
1418 void movlpd(XMMRegister dst, AddressLiteral src); | |
1419 | |
1420 public: | |
1421 | |
1422 | |
1423 void xorpd(XMMRegister dst, XMMRegister src) {Assembler::xorpd(dst, src); } | |
1424 void xorpd(XMMRegister dst, Address src) {Assembler::xorpd(dst, src); } | |
1425 void xorpd(XMMRegister dst, AddressLiteral src); | |
1426 | |
1427 void xorps(XMMRegister dst, XMMRegister src) {Assembler::xorps(dst, src); } | |
1428 void xorps(XMMRegister dst, Address src) {Assembler::xorps(dst, src); } | |
1429 void xorps(XMMRegister dst, AddressLiteral src); | |
1430 | |
1431 | |
1432 // Data | |
1433 | |
1434 void movoop(Register dst, jobject obj); | |
1435 void movoop(Address dst, jobject obj); | |
1436 | |
1437 void movptr(ArrayAddress dst, Register src); | |
1438 void movptr(Register dst, AddressLiteral src); | |
1439 | |
1440 void movptr(Register dst, intptr_t src); | |
1441 void movptr(Address dst, intptr_t src); | |
1442 | |
1443 void movptr(Register dst, ArrayAddress src); | |
1444 | |
1445 // to avoid hiding movl | |
1446 void mov32(AddressLiteral dst, Register src); | |
1447 void mov32(Register dst, AddressLiteral src); | |
1448 | |
1449 void pushoop(jobject obj); | |
1450 | |
1451 // Can push value or effective address | |
1452 void pushptr(AddressLiteral src); | |
1453 | |
1454 }; | |
1455 | |
1456 /** | |
1457 * class SkipIfEqual: | |
1458 * | |
1459 * Instantiating this class will result in assembly code being output that will | |
1460 * jump around any code emitted between the creation of the instance and it's | |
1461 * automatic destruction at the end of a scope block, depending on the value of | |
1462 * the flag passed to the constructor, which will be checked at run-time. | |
1463 */ | |
1464 class SkipIfEqual { | |
1465 private: | |
1466 MacroAssembler* _masm; | |
1467 Label _label; | |
1468 | |
1469 public: | |
1470 SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value); | |
1471 ~SkipIfEqual(); | |
1472 }; | |
1473 | |
1474 | |
1475 #ifdef ASSERT | |
1476 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; } | |
1477 #endif |