1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * vim: set ts=8 sw=4 et tw=79:
4 * ***** BEGIN LICENSE BLOCK *****
5 * Copyright (C) 2008 Apple Inc. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * ***** END LICENSE BLOCK ***** */
30 #ifndef MacroAssemblerX86_64_h
31 #define MacroAssemblerX86_64_h
33 #include "assembler/wtf/Platform.h"
35 #if ENABLE_ASSEMBLER && WTF_CPU_X86_64
37 #include "MacroAssemblerX86Common.h"
39 #define REPTACH_OFFSET_CALL_R11 3
43 class MacroAssemblerX86_64 : public MacroAssemblerX86Common {
45 static const intptr_t MinInt32 = 0xFFFFFFFF80000000;
46 static const intptr_t MaxInt32 = 0x000000007FFFFFFF;
49 static const Scale ScalePtr = TimesEight;
50 static const unsigned int TotalRegisters = 16;
52 using MacroAssemblerX86Common::add32;
53 using MacroAssemblerX86Common::and32;
54 using MacroAssemblerX86Common::or32;
55 using MacroAssemblerX86Common::sub32;
56 using MacroAssemblerX86Common::load32;
57 using MacroAssemblerX86Common::store32;
58 using MacroAssemblerX86Common::call;
59 using MacroAssemblerX86Common::loadDouble;
60 using MacroAssemblerX86Common::storeDouble;
61 using MacroAssemblerX86Common::convertInt32ToDouble;
63 void add32(Imm32 imm, AbsoluteAddress address)
65 move(ImmPtr(address.m_ptr), scratchRegister);
66 add32(imm, Address(scratchRegister));
69 void and32(Imm32 imm, AbsoluteAddress address)
71 move(ImmPtr(address.m_ptr), scratchRegister);
72 and32(imm, Address(scratchRegister));
75 void or32(Imm32 imm, AbsoluteAddress address)
77 move(ImmPtr(address.m_ptr), scratchRegister);
78 or32(imm, Address(scratchRegister));
81 void sub32(Imm32 imm, AbsoluteAddress address)
83 move(ImmPtr(address.m_ptr), scratchRegister);
84 sub32(imm, Address(scratchRegister));
87 void load32(void* address, RegisterID dest)
89 if (dest == X86Registers::eax)
90 m_assembler.movl_mEAX(address);
92 move(ImmPtr(address), scratchRegister);
93 load32(ImplicitAddress(scratchRegister), dest);
97 DataLabelPtr loadDouble(const void* address, FPRegisterID dest)
99 DataLabelPtr label = moveWithPatch(ImmPtr(address), scratchRegister);
100 loadDouble(scratchRegister, dest);
104 void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
106 move(Imm32(*static_cast<int32_t*>(src.m_ptr)), scratchRegister);
107 m_assembler.cvtsi2sd_rr(scratchRegister, dest);
110 void convertUInt32ToDouble(RegisterID srcDest, FPRegisterID dest)
112 zeroExtend32ToPtr(srcDest, srcDest);
113 zeroDouble(dest); // break dependency chains
114 m_assembler.cvtsq2sd_rr(srcDest, dest);
117 void store32(Imm32 imm, void* address)
119 move(X86Registers::eax, scratchRegister);
120 move(imm, X86Registers::eax);
121 m_assembler.movl_EAXm(address);
122 move(scratchRegister, X86Registers::eax);
127 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
128 Call result = Call(m_assembler.call(scratchRegister), Call::Linkable);
129 ASSERT(differenceBetween(label, result) == REPTACH_OFFSET_CALL_R11);
133 Call tailRecursiveCall()
135 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
136 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
137 ASSERT(differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
138 return Call::fromTailJump(newJump);
141 Call makeTailRecursiveCall(Jump oldJump)
144 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
145 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
146 ASSERT(differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
147 return Call::fromTailJump(newJump);
151 void addPtr(RegisterID src, RegisterID dest)
153 m_assembler.addq_rr(src, dest);
156 void lea(BaseIndex address, RegisterID dest)
158 m_assembler.leaq_mr(address.offset, address.base, address.index, address.scale, dest);
161 void lea(Address address, RegisterID dest)
163 m_assembler.leaq_mr(address.offset, address.base, dest);
166 void addPtr(Imm32 imm, RegisterID srcDest)
168 m_assembler.addq_ir(imm.m_value, srcDest);
171 void addPtr(ImmPtr imm, RegisterID dest)
173 move(imm, scratchRegister);
174 m_assembler.addq_rr(scratchRegister, dest);
177 void addPtr(Imm32 imm, RegisterID src, RegisterID dest)
179 m_assembler.leaq_mr(imm.m_value, src, dest);
182 void addPtr(Imm32 imm, Address address)
184 m_assembler.addq_im(imm.m_value, address.offset, address.base);
187 void addPtr(Imm32 imm, AbsoluteAddress address)
189 move(ImmPtr(address.m_ptr), scratchRegister);
190 addPtr(imm, Address(scratchRegister));
193 void andPtr(RegisterID src, RegisterID dest)
195 m_assembler.andq_rr(src, dest);
198 void andPtr(Address src, RegisterID dest)
200 m_assembler.andq_mr(src.offset, src.base, dest);
203 void andPtr(Imm32 imm, RegisterID srcDest)
205 m_assembler.andq_ir(imm.m_value, srcDest);
208 void andPtr(ImmPtr imm, RegisterID srcDest)
210 intptr_t value = intptr_t(imm.m_value);
212 // 32-bit immediates in 64-bit ALU ops are sign-extended.
213 if (value >= MinInt32 && value <= MaxInt32) {
214 andPtr(Imm32(int(value)), srcDest);
216 move(imm, scratchRegister);
217 m_assembler.andq_rr(scratchRegister, srcDest);
221 void notPtr(RegisterID srcDest)
223 m_assembler.notq_r(srcDest);
226 void orPtr(Address src, RegisterID dest)
228 m_assembler.orq_mr(src.offset, src.base, dest);
231 void orPtr(RegisterID src, RegisterID dest)
233 m_assembler.orq_rr(src, dest);
236 void orPtr(ImmPtr imm, RegisterID dest)
238 move(imm, scratchRegister);
239 m_assembler.orq_rr(scratchRegister, dest);
242 void orPtr(Imm32 imm, RegisterID dest)
244 m_assembler.orq_ir(imm.m_value, dest);
247 void subPtr(RegisterID src, RegisterID dest)
249 m_assembler.subq_rr(src, dest);
252 void subPtr(Imm32 imm, RegisterID dest)
254 m_assembler.subq_ir(imm.m_value, dest);
257 void subPtr(ImmPtr imm, RegisterID dest)
259 move(imm, scratchRegister);
260 m_assembler.subq_rr(scratchRegister, dest);
263 void xorPtr(RegisterID src, RegisterID dest)
265 m_assembler.xorq_rr(src, dest);
268 void xorPtr(Imm32 imm, RegisterID srcDest)
270 m_assembler.xorq_ir(imm.m_value, srcDest);
273 void rshiftPtr(Imm32 imm, RegisterID srcDest)
275 m_assembler.sarq_i8r(imm.m_value, srcDest);
278 void lshiftPtr(Imm32 imm, RegisterID srcDest)
280 m_assembler.shlq_i8r(imm.m_value, srcDest);
283 void loadPtr(ImplicitAddress address, RegisterID dest)
285 m_assembler.movq_mr(address.offset, address.base, dest);
288 void loadPtr(BaseIndex address, RegisterID dest)
290 m_assembler.movq_mr(address.offset, address.base, address.index, address.scale, dest);
293 void loadPtr(void* address, RegisterID dest)
295 if (dest == X86Registers::eax)
296 m_assembler.movq_mEAX(address);
298 move(ImmPtr(address), scratchRegister);
299 loadPtr(ImplicitAddress(scratchRegister), dest);
303 DataLabel32 loadPtrWithAddressOffsetPatch(Address address, RegisterID dest)
305 m_assembler.movq_mr_disp32(address.offset, address.base, dest);
306 return DataLabel32(this);
309 void storePtr(RegisterID src, ImplicitAddress address)
311 m_assembler.movq_rm(src, address.offset, address.base);
314 void storePtr(ImmPtr imm, BaseIndex address)
316 intptr_t value = intptr_t(imm.m_value);
318 // 32-bit immediates in 64-bit stores will be zero-extended, so check
319 // if the value can fit in such a store.
320 if (value >= 0 && value < intptr_t(0x7FFFFFFF)) {
321 m_assembler.movq_i32m(int32_t(value), address.offset, address.base, address.index,
324 move(imm, scratchRegister);
325 storePtr(scratchRegister, address);
329 void storePtr(RegisterID src, BaseIndex address)
331 m_assembler.movq_rm(src, address.offset, address.base, address.index, address.scale);
334 void storePtr(RegisterID src, void* address)
336 if (src == X86Registers::eax)
337 m_assembler.movq_EAXm(address);
339 move(ImmPtr(address), scratchRegister);
340 storePtr(src, ImplicitAddress(scratchRegister));
344 void storePtr(ImmPtr imm, ImplicitAddress address)
346 intptr_t value = intptr_t(imm.m_value);
348 // 32-bit immediates in 64-bit stores will be zero-extended, so check
349 // if the value can fit in such a store.
350 if (value >= 0 && value < intptr_t(0x7FFFFFFF)) {
351 m_assembler.movq_i32m(int32_t(value), address.offset, address.base);
353 move(imm, scratchRegister);
354 storePtr(scratchRegister, address);
358 DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
360 m_assembler.movq_rm_disp32(src, address.offset, address.base);
361 return DataLabel32(this);
364 void movePtrToDouble(RegisterID src, FPRegisterID dest)
366 m_assembler.movq_rr(src, dest);
369 void moveDoubleToPtr(FPRegisterID src, RegisterID dest)
371 m_assembler.movq_rr(src, dest);
374 void setPtr(Condition cond, RegisterID left, Imm32 right, RegisterID dest)
376 if (((cond == Equal) || (cond == NotEqual)) && !right.m_value)
377 m_assembler.testq_rr(left, left);
379 m_assembler.cmpq_ir(right.m_value, left);
380 m_assembler.setCC_r(x86Condition(cond), dest);
381 m_assembler.movzbl_rr(dest, dest);
384 void setPtr(Condition cond, RegisterID left, RegisterID right, RegisterID dest)
386 m_assembler.cmpq_rr(right, left);
387 m_assembler.setCC_r(x86Condition(cond), dest);
388 m_assembler.movzbl_rr(dest, dest);
391 void setPtr(Condition cond, RegisterID left, ImmPtr right, RegisterID dest)
393 move(right, scratchRegister);
394 setPtr(cond, left, scratchRegister, dest);
397 Jump branchPtr(Condition cond, RegisterID left, RegisterID right)
399 m_assembler.cmpq_rr(right, left);
400 return Jump(m_assembler.jCC(x86Condition(cond)));
403 Jump branchPtr(Condition cond, RegisterID left, Imm32 right)
405 m_assembler.cmpq_ir(right.m_value, left);
406 return Jump(m_assembler.jCC(x86Condition(cond)));
409 Jump branchPtr(Condition cond, RegisterID left, ImmPtr right)
411 move(right, scratchRegister);
412 return branchPtr(cond, left, scratchRegister);
415 Jump branchPtr(Condition cond, RegisterID left, Address right)
417 m_assembler.cmpq_mr(right.offset, right.base, left);
418 return Jump(m_assembler.jCC(x86Condition(cond)));
421 Jump branchPtr(Condition cond, AbsoluteAddress left, RegisterID right)
423 move(ImmPtr(left.m_ptr), scratchRegister);
424 return branchPtr(cond, Address(scratchRegister), right);
427 Jump branchPtr(Condition cond, Address left, RegisterID right)
429 m_assembler.cmpq_rm(right, left.offset, left.base);
430 return Jump(m_assembler.jCC(x86Condition(cond)));
433 Jump branchPtr(Condition cond, Address left, ImmPtr right)
435 move(right, scratchRegister);
436 return branchPtr(cond, left, scratchRegister);
439 Jump branchTestPtr(Condition cond, RegisterID reg, RegisterID mask)
441 m_assembler.testq_rr(reg, mask);
442 return Jump(m_assembler.jCC(x86Condition(cond)));
445 Jump branchTestPtr(Condition cond, RegisterID reg, Imm32 mask = Imm32(-1))
447 // if we are only interested in the low seven bits, this can be tested with a testb
448 if (mask.m_value == -1)
449 m_assembler.testq_rr(reg, reg);
450 else if ((mask.m_value & ~0x7f) == 0)
451 m_assembler.testb_i8r(mask.m_value, reg);
453 m_assembler.testq_i32r(mask.m_value, reg);
454 return Jump(m_assembler.jCC(x86Condition(cond)));
457 Jump branchTestPtr(Condition cond, Address address, Imm32 mask = Imm32(-1))
459 if (mask.m_value == -1)
460 m_assembler.cmpq_im(0, address.offset, address.base);
462 m_assembler.testq_i32m(mask.m_value, address.offset, address.base);
463 return Jump(m_assembler.jCC(x86Condition(cond)));
466 Jump branchTestPtr(Condition cond, BaseIndex address, Imm32 mask = Imm32(-1))
468 if (mask.m_value == -1)
469 m_assembler.cmpq_im(0, address.offset, address.base, address.index, address.scale);
471 m_assembler.testq_i32m(mask.m_value, address.offset, address.base, address.index, address.scale);
472 return Jump(m_assembler.jCC(x86Condition(cond)));
476 Jump branchAddPtr(Condition cond, RegisterID src, RegisterID dest)
478 ASSERT((cond == Overflow) || (cond == Zero) || (cond == NonZero));
480 return Jump(m_assembler.jCC(x86Condition(cond)));
483 Jump branchSubPtr(Condition cond, Imm32 imm, RegisterID dest)
485 ASSERT((cond == Overflow) || (cond == Zero) || (cond == NonZero));
487 return Jump(m_assembler.jCC(x86Condition(cond)));
490 DataLabelPtr moveWithPatch(ImmPtr initialValue, RegisterID dest)
492 m_assembler.movq_i64r(initialValue.asIntptr(), dest);
493 return DataLabelPtr(this);
496 Jump branchPtrWithPatch(Condition cond, RegisterID left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
498 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
499 return branchPtr(cond, left, scratchRegister);
502 Jump branchPtrWithPatch(Condition cond, Address left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
504 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
505 return branchPtr(cond, left, scratchRegister);
508 DataLabelPtr storePtrWithPatch(ImmPtr initialValue, ImplicitAddress address)
510 DataLabelPtr label = moveWithPatch(initialValue, scratchRegister);
511 storePtr(scratchRegister, address);
515 using MacroAssemblerX86Common::branchTest8;
516 Jump branchTest8(Condition cond, ExtendedAddress address, Imm32 mask = Imm32(-1))
518 ImmPtr addr(reinterpret_cast<void*>(address.offset));
519 MacroAssemblerX86Common::move(addr, scratchRegister);
520 return MacroAssemblerX86Common::branchTest8(cond, BaseIndex(scratchRegister, address.base, TimesOne), mask);
523 Label loadPtrWithPatchToLEA(Address address, RegisterID dest)
526 loadPtr(address, dest);
532 for (int i = X86Registers::eax; i <= X86Registers::r15; i++)
533 m_assembler.push_r((RegisterID)i);
538 for (int i = X86Registers::r15; i >= X86Registers::eax; i--)
539 m_assembler.pop_r((RegisterID)i);
542 void storeDouble(ImmDouble imm, Address address)
544 storePtr(ImmPtr(reinterpret_cast<void *>(imm.u.u64)), address);
547 void storeDouble(ImmDouble imm, BaseIndex address)
549 storePtr(ImmPtr(reinterpret_cast<void *>(imm.u.u64)), address);
552 bool supportsFloatingPoint() const { return true; }
553 // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
554 bool supportsFloatingPointTruncate() const { return true; }
555 bool supportsFloatingPointSqrt() const { return true; }
558 friend class LinkBuffer;
559 friend class RepatchBuffer;
561 static void linkCall(void* code, Call call, FunctionPtr function)
563 if (!call.isFlagSet(Call::Near))
564 X86Assembler::linkPointer(code, X86Assembler::labelFor(call.m_jmp, -REPTACH_OFFSET_CALL_R11), function.value());
566 X86Assembler::linkCall(code, call.m_jmp, function.value());
569 static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
571 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
574 static void repatchCall(CodeLocationCall call, FunctionPtr destination)
576 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
583 #endif // ENABLE(ASSEMBLER)
585 #endif // MacroAssemblerX86_64_h