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26 #ifndef MacroAssemblerX86_64_h
27 #define MacroAssemblerX86_64_h
29 #if ENABLE(ASSEMBLER) && CPU(X86_64)
31 #include "MacroAssemblerX86Common.h"
33 #define REPTACH_OFFSET_CALL_R11 3
37 class MacroAssemblerX86_64 : public MacroAssemblerX86Common {
39 static const X86Registers::RegisterID scratchRegister = X86Registers::r11;
42 static const Scale ScalePtr = TimesEight;
44 using MacroAssemblerX86Common::add32;
45 using MacroAssemblerX86Common::and32;
46 using MacroAssemblerX86Common::branchAdd32;
47 using MacroAssemblerX86Common::or32;
48 using MacroAssemblerX86Common::sub32;
49 using MacroAssemblerX86Common::load32;
50 using MacroAssemblerX86Common::store32;
51 using MacroAssemblerX86Common::call;
52 using MacroAssemblerX86Common::jump;
53 using MacroAssemblerX86Common::addDouble;
54 using MacroAssemblerX86Common::loadDouble;
55 using MacroAssemblerX86Common::convertInt32ToDouble;
57 void add32(TrustedImm32 imm, AbsoluteAddress address)
59 move(TrustedImmPtr(address.m_ptr), scratchRegister);
60 add32(imm, Address(scratchRegister));
63 void and32(TrustedImm32 imm, AbsoluteAddress address)
65 move(TrustedImmPtr(address.m_ptr), scratchRegister);
66 and32(imm, Address(scratchRegister));
69 void or32(TrustedImm32 imm, AbsoluteAddress address)
71 move(TrustedImmPtr(address.m_ptr), scratchRegister);
72 or32(imm, Address(scratchRegister));
75 void sub32(TrustedImm32 imm, AbsoluteAddress address)
77 move(TrustedImmPtr(address.m_ptr), scratchRegister);
78 sub32(imm, Address(scratchRegister));
81 void load32(const void* address, RegisterID dest)
83 if (dest == X86Registers::eax)
84 m_assembler.movl_mEAX(address);
86 move(TrustedImmPtr(address), dest);
91 void loadDouble(const void* address, FPRegisterID dest)
93 move(TrustedImmPtr(address), scratchRegister);
94 loadDouble(scratchRegister, dest);
97 void addDouble(AbsoluteAddress address, FPRegisterID dest)
99 move(TrustedImmPtr(address.m_ptr), scratchRegister);
100 m_assembler.addsd_mr(0, scratchRegister, dest);
103 void convertInt32ToDouble(TrustedImm32 imm, FPRegisterID dest)
105 move(imm, scratchRegister);
106 m_assembler.cvtsi2sd_rr(scratchRegister, dest);
109 void absDouble(FPRegisterID src, FPRegisterID dst)
112 static const double negativeZeroConstant = -0.0;
113 loadDouble(&negativeZeroConstant, dst);
114 m_assembler.andnpd_rr(src, dst);
117 void store32(TrustedImm32 imm, void* address)
119 move(TrustedImmPtr(address), scratchRegister);
120 store32(imm, scratchRegister);
125 DataLabelPtr label = moveWithPatch(TrustedImmPtr(0), scratchRegister);
126 Call result = Call(m_assembler.call(scratchRegister), Call::Linkable);
127 ASSERT_UNUSED(label, differenceBetween(label, result) == REPTACH_OFFSET_CALL_R11);
131 // Address is a memory location containing the address to jump to
132 void jump(AbsoluteAddress address)
134 move(TrustedImmPtr(address.m_ptr), scratchRegister);
135 jump(Address(scratchRegister));
138 Call tailRecursiveCall()
140 DataLabelPtr label = moveWithPatch(TrustedImmPtr(0), scratchRegister);
141 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
142 ASSERT_UNUSED(label, differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
143 return Call::fromTailJump(newJump);
146 Call makeTailRecursiveCall(Jump oldJump)
149 DataLabelPtr label = moveWithPatch(TrustedImmPtr(0), scratchRegister);
150 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
151 ASSERT_UNUSED(label, differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
152 return Call::fromTailJump(newJump);
156 void addPtr(RegisterID src, RegisterID dest)
158 m_assembler.addq_rr(src, dest);
161 void addPtr(TrustedImm32 imm, RegisterID srcDest)
163 m_assembler.addq_ir(imm.m_value, srcDest);
166 void addPtr(TrustedImmPtr imm, RegisterID dest)
168 move(imm, scratchRegister);
169 m_assembler.addq_rr(scratchRegister, dest);
172 void addPtr(TrustedImm32 imm, RegisterID src, RegisterID dest)
174 m_assembler.leaq_mr(imm.m_value, src, dest);
177 void addPtr(TrustedImm32 imm, Address address)
179 m_assembler.addq_im(imm.m_value, address.offset, address.base);
182 void addPtr(TrustedImm32 imm, AbsoluteAddress address)
184 move(TrustedImmPtr(address.m_ptr), scratchRegister);
185 addPtr(imm, Address(scratchRegister));
188 void add64(TrustedImm32 imm, AbsoluteAddress address)
190 addPtr(imm, address);
193 void andPtr(RegisterID src, RegisterID dest)
195 m_assembler.andq_rr(src, dest);
198 void andPtr(TrustedImm32 imm, RegisterID srcDest)
200 m_assembler.andq_ir(imm.m_value, srcDest);
203 void orPtr(RegisterID src, RegisterID dest)
205 m_assembler.orq_rr(src, dest);
208 void orPtr(TrustedImmPtr imm, RegisterID dest)
210 move(imm, scratchRegister);
211 m_assembler.orq_rr(scratchRegister, dest);
214 void orPtr(TrustedImm32 imm, RegisterID dest)
216 m_assembler.orq_ir(imm.m_value, dest);
219 void orPtr(RegisterID op1, RegisterID op2, RegisterID dest)
223 else if (op1 == dest)
231 void orPtr(TrustedImm32 imm, RegisterID src, RegisterID dest)
237 void subPtr(RegisterID src, RegisterID dest)
239 m_assembler.subq_rr(src, dest);
242 void subPtr(TrustedImm32 imm, RegisterID dest)
244 m_assembler.subq_ir(imm.m_value, dest);
247 void subPtr(TrustedImmPtr imm, RegisterID dest)
249 move(imm, scratchRegister);
250 m_assembler.subq_rr(scratchRegister, dest);
253 void xorPtr(RegisterID src, RegisterID dest)
255 m_assembler.xorq_rr(src, dest);
258 void xorPtr(TrustedImm32 imm, RegisterID srcDest)
260 m_assembler.xorq_ir(imm.m_value, srcDest);
264 void loadPtr(ImplicitAddress address, RegisterID dest)
266 m_assembler.movq_mr(address.offset, address.base, dest);
269 void loadPtr(BaseIndex address, RegisterID dest)
271 m_assembler.movq_mr(address.offset, address.base, address.index, address.scale, dest);
274 void loadPtr(const void* address, RegisterID dest)
276 if (dest == X86Registers::eax)
277 m_assembler.movq_mEAX(address);
279 move(TrustedImmPtr(address), dest);
284 DataLabel32 loadPtrWithAddressOffsetPatch(Address address, RegisterID dest)
286 m_assembler.movq_mr_disp32(address.offset, address.base, dest);
287 return DataLabel32(this);
290 DataLabelCompact loadPtrWithCompactAddressOffsetPatch(Address address, RegisterID dest)
292 m_assembler.movq_mr_disp8(address.offset, address.base, dest);
293 return DataLabelCompact(this);
296 void storePtr(RegisterID src, ImplicitAddress address)
298 m_assembler.movq_rm(src, address.offset, address.base);
301 void storePtr(RegisterID src, BaseIndex address)
303 m_assembler.movq_rm(src, address.offset, address.base, address.index, address.scale);
306 void storePtr(RegisterID src, void* address)
308 if (src == X86Registers::eax)
309 m_assembler.movq_EAXm(address);
311 move(TrustedImmPtr(address), scratchRegister);
312 storePtr(src, scratchRegister);
316 void storePtr(TrustedImmPtr imm, ImplicitAddress address)
318 move(imm, scratchRegister);
319 storePtr(scratchRegister, address);
322 void storePtr(TrustedImmPtr imm, BaseIndex address)
324 move(imm, scratchRegister);
325 m_assembler.movq_rm(scratchRegister, address.offset, address.base, address.index, address.scale);
328 DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
330 m_assembler.movq_rm_disp32(src, address.offset, address.base);
331 return DataLabel32(this);
334 void movePtrToDouble(RegisterID src, FPRegisterID dest)
336 m_assembler.movq_rr(src, dest);
339 void moveDoubleToPtr(FPRegisterID src, RegisterID dest)
341 m_assembler.movq_rr(src, dest);
344 void comparePtr(RelationalCondition cond, RegisterID left, TrustedImm32 right, RegisterID dest)
346 if (((cond == Equal) || (cond == NotEqual)) && !right.m_value)
347 m_assembler.testq_rr(left, left);
349 m_assembler.cmpq_ir(right.m_value, left);
350 m_assembler.setCC_r(x86Condition(cond), dest);
351 m_assembler.movzbl_rr(dest, dest);
354 Jump branchAdd32(ResultCondition cond, TrustedImm32 src, AbsoluteAddress dest)
356 move(TrustedImmPtr(dest.m_ptr), scratchRegister);
357 add32(src, Address(scratchRegister));
358 return Jump(m_assembler.jCC(x86Condition(cond)));
361 Jump branchPtr(RelationalCondition cond, RegisterID left, RegisterID right)
363 m_assembler.cmpq_rr(right, left);
364 return Jump(m_assembler.jCC(x86Condition(cond)));
367 Jump branchPtr(RelationalCondition cond, RegisterID left, TrustedImmPtr right)
369 if (((cond == Equal) || (cond == NotEqual)) && !right.m_value) {
370 m_assembler.testq_rr(left, left);
371 return Jump(m_assembler.jCC(x86Condition(cond)));
373 move(right, scratchRegister);
374 return branchPtr(cond, left, scratchRegister);
377 Jump branchPtr(RelationalCondition cond, RegisterID left, Address right)
379 m_assembler.cmpq_mr(right.offset, right.base, left);
380 return Jump(m_assembler.jCC(x86Condition(cond)));
383 Jump branchPtr(RelationalCondition cond, AbsoluteAddress left, RegisterID right)
385 move(TrustedImmPtr(left.m_ptr), scratchRegister);
386 return branchPtr(cond, Address(scratchRegister), right);
389 Jump branchPtr(RelationalCondition cond, Address left, RegisterID right)
391 m_assembler.cmpq_rm(right, left.offset, left.base);
392 return Jump(m_assembler.jCC(x86Condition(cond)));
395 Jump branchPtr(RelationalCondition cond, Address left, TrustedImmPtr right)
397 move(right, scratchRegister);
398 return branchPtr(cond, left, scratchRegister);
401 Jump branchTestPtr(ResultCondition cond, RegisterID reg, RegisterID mask)
403 m_assembler.testq_rr(reg, mask);
404 return Jump(m_assembler.jCC(x86Condition(cond)));
407 Jump branchTestPtr(ResultCondition cond, RegisterID reg, TrustedImm32 mask = TrustedImm32(-1))
409 // if we are only interested in the low seven bits, this can be tested with a testb
410 if (mask.m_value == -1)
411 m_assembler.testq_rr(reg, reg);
412 else if ((mask.m_value & ~0x7f) == 0)
413 m_assembler.testb_i8r(mask.m_value, reg);
415 m_assembler.testq_i32r(mask.m_value, reg);
416 return Jump(m_assembler.jCC(x86Condition(cond)));
419 Jump branchTestPtr(ResultCondition cond, AbsoluteAddress address, TrustedImm32 mask = TrustedImm32(-1))
421 loadPtr(address.m_ptr, scratchRegister);
422 return branchTestPtr(cond, scratchRegister, mask);
425 Jump branchTestPtr(ResultCondition cond, Address address, TrustedImm32 mask = TrustedImm32(-1))
427 if (mask.m_value == -1)
428 m_assembler.cmpq_im(0, address.offset, address.base);
430 m_assembler.testq_i32m(mask.m_value, address.offset, address.base);
431 return Jump(m_assembler.jCC(x86Condition(cond)));
434 Jump branchTestPtr(ResultCondition cond, BaseIndex address, TrustedImm32 mask = TrustedImm32(-1))
436 if (mask.m_value == -1)
437 m_assembler.cmpq_im(0, address.offset, address.base, address.index, address.scale);
439 m_assembler.testq_i32m(mask.m_value, address.offset, address.base, address.index, address.scale);
440 return Jump(m_assembler.jCC(x86Condition(cond)));
444 Jump branchAddPtr(ResultCondition cond, TrustedImm32 imm, RegisterID dest)
447 return Jump(m_assembler.jCC(x86Condition(cond)));
450 Jump branchAddPtr(ResultCondition cond, RegisterID src, RegisterID dest)
453 return Jump(m_assembler.jCC(x86Condition(cond)));
456 Jump branchSubPtr(ResultCondition cond, TrustedImm32 imm, RegisterID dest)
459 return Jump(m_assembler.jCC(x86Condition(cond)));
462 DataLabelPtr moveWithPatch(TrustedImmPtr initialValue, RegisterID dest)
464 m_assembler.movq_i64r(initialValue.asIntptr(), dest);
465 return DataLabelPtr(this);
468 Jump branchPtrWithPatch(RelationalCondition cond, RegisterID left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
470 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
471 return branchPtr(cond, left, scratchRegister);
474 Jump branchPtrWithPatch(RelationalCondition cond, Address left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
476 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
477 return branchPtr(cond, left, scratchRegister);
480 DataLabelPtr storePtrWithPatch(TrustedImmPtr initialValue, ImplicitAddress address)
482 DataLabelPtr label = moveWithPatch(initialValue, scratchRegister);
483 storePtr(scratchRegister, address);
487 using MacroAssemblerX86Common::branchTest8;
488 Jump branchTest8(ResultCondition cond, ExtendedAddress address, TrustedImm32 mask = TrustedImm32(-1))
490 TrustedImmPtr addr(reinterpret_cast<void*>(address.offset));
491 MacroAssemblerX86Common::move(addr, scratchRegister);
492 return MacroAssemblerX86Common::branchTest8(cond, BaseIndex(scratchRegister, address.base, TimesOne), mask);
495 static bool supportsFloatingPoint() { return true; }
496 // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
497 static bool supportsFloatingPointTruncate() { return true; }
498 static bool supportsFloatingPointSqrt() { return true; }
499 static bool supportsFloatingPointAbs() { return true; }
501 static FunctionPtr readCallTarget(CodeLocationCall call)
503 return FunctionPtr(X86Assembler::readPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation()));
507 friend class LinkBuffer;
508 friend class RepatchBuffer;
510 static void linkCall(void* code, Call call, FunctionPtr function)
512 if (!call.isFlagSet(Call::Near))
513 X86Assembler::linkPointer(code, call.m_label.labelAtOffset(-REPTACH_OFFSET_CALL_R11), function.value());
515 X86Assembler::linkCall(code, call.m_label, function.value());
518 static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
520 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
523 static void repatchCall(CodeLocationCall call, FunctionPtr destination)
525 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
532 #endif // ENABLE(ASSEMBLER)
534 #endif // MacroAssemblerX86_64_h