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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::or32;
47 using MacroAssemblerX86Common::sub32;
48 using MacroAssemblerX86Common::load32;
49 using MacroAssemblerX86Common::store32;
50 using MacroAssemblerX86Common::call;
51 using MacroAssemblerX86Common::loadDouble;
52 using MacroAssemblerX86Common::convertInt32ToDouble;
54 void add32(Imm32 imm, AbsoluteAddress address)
56 move(ImmPtr(address.m_ptr), scratchRegister);
57 add32(imm, Address(scratchRegister));
60 void and32(Imm32 imm, AbsoluteAddress address)
62 move(ImmPtr(address.m_ptr), scratchRegister);
63 and32(imm, Address(scratchRegister));
66 void or32(Imm32 imm, AbsoluteAddress address)
68 move(ImmPtr(address.m_ptr), scratchRegister);
69 or32(imm, Address(scratchRegister));
72 void sub32(Imm32 imm, AbsoluteAddress address)
74 move(ImmPtr(address.m_ptr), scratchRegister);
75 sub32(imm, Address(scratchRegister));
78 void load32(void* address, RegisterID dest)
80 if (dest == X86Registers::eax)
81 m_assembler.movl_mEAX(address);
83 move(X86Registers::eax, dest);
84 m_assembler.movl_mEAX(address);
85 swap(X86Registers::eax, dest);
89 void loadDouble(const void* address, FPRegisterID dest)
91 move(ImmPtr(address), scratchRegister);
92 loadDouble(scratchRegister, dest);
95 void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
97 move(Imm32(*static_cast<int32_t*>(src.m_ptr)), scratchRegister);
98 m_assembler.cvtsi2sd_rr(scratchRegister, dest);
101 void store32(Imm32 imm, void* address)
103 move(X86Registers::eax, scratchRegister);
104 move(imm, X86Registers::eax);
105 m_assembler.movl_EAXm(address);
106 move(scratchRegister, X86Registers::eax);
111 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
112 Call result = Call(m_assembler.call(scratchRegister), Call::Linkable);
113 ASSERT(differenceBetween(label, result) == REPTACH_OFFSET_CALL_R11);
117 Call tailRecursiveCall()
119 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
120 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
121 ASSERT(differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
122 return Call::fromTailJump(newJump);
125 Call makeTailRecursiveCall(Jump oldJump)
128 DataLabelPtr label = moveWithPatch(ImmPtr(0), scratchRegister);
129 Jump newJump = Jump(m_assembler.jmp_r(scratchRegister));
130 ASSERT(differenceBetween(label, newJump) == REPTACH_OFFSET_CALL_R11);
131 return Call::fromTailJump(newJump);
135 void addPtr(RegisterID src, RegisterID dest)
137 m_assembler.addq_rr(src, dest);
140 void addPtr(Imm32 imm, RegisterID srcDest)
142 m_assembler.addq_ir(imm.m_value, srcDest);
145 void addPtr(ImmPtr imm, RegisterID dest)
147 move(imm, scratchRegister);
148 m_assembler.addq_rr(scratchRegister, dest);
151 void addPtr(Imm32 imm, RegisterID src, RegisterID dest)
153 m_assembler.leaq_mr(imm.m_value, src, dest);
156 void addPtr(Imm32 imm, Address address)
158 m_assembler.addq_im(imm.m_value, address.offset, address.base);
161 void addPtr(Imm32 imm, AbsoluteAddress address)
163 move(ImmPtr(address.m_ptr), scratchRegister);
164 addPtr(imm, Address(scratchRegister));
167 void andPtr(RegisterID src, RegisterID dest)
169 m_assembler.andq_rr(src, dest);
172 void andPtr(Imm32 imm, RegisterID srcDest)
174 m_assembler.andq_ir(imm.m_value, srcDest);
177 void orPtr(RegisterID src, RegisterID dest)
179 m_assembler.orq_rr(src, dest);
182 void orPtr(ImmPtr imm, RegisterID dest)
184 move(imm, scratchRegister);
185 m_assembler.orq_rr(scratchRegister, dest);
188 void orPtr(Imm32 imm, RegisterID dest)
190 m_assembler.orq_ir(imm.m_value, dest);
193 void subPtr(RegisterID src, RegisterID dest)
195 m_assembler.subq_rr(src, dest);
198 void subPtr(Imm32 imm, RegisterID dest)
200 m_assembler.subq_ir(imm.m_value, dest);
203 void subPtr(ImmPtr imm, RegisterID dest)
205 move(imm, scratchRegister);
206 m_assembler.subq_rr(scratchRegister, dest);
209 void xorPtr(RegisterID src, RegisterID dest)
211 m_assembler.xorq_rr(src, dest);
214 void xorPtr(Imm32 imm, RegisterID srcDest)
216 m_assembler.xorq_ir(imm.m_value, srcDest);
220 void loadPtr(ImplicitAddress address, RegisterID dest)
222 m_assembler.movq_mr(address.offset, address.base, dest);
225 void loadPtr(BaseIndex address, RegisterID dest)
227 m_assembler.movq_mr(address.offset, address.base, address.index, address.scale, dest);
230 void loadPtr(void* address, RegisterID dest)
232 if (dest == X86Registers::eax)
233 m_assembler.movq_mEAX(address);
235 move(X86Registers::eax, dest);
236 m_assembler.movq_mEAX(address);
237 swap(X86Registers::eax, dest);
241 DataLabel32 loadPtrWithAddressOffsetPatch(Address address, RegisterID dest)
243 m_assembler.movq_mr_disp32(address.offset, address.base, dest);
244 return DataLabel32(this);
247 void storePtr(RegisterID src, ImplicitAddress address)
249 m_assembler.movq_rm(src, address.offset, address.base);
252 void storePtr(RegisterID src, BaseIndex address)
254 m_assembler.movq_rm(src, address.offset, address.base, address.index, address.scale);
257 void storePtr(RegisterID src, void* address)
259 if (src == X86Registers::eax)
260 m_assembler.movq_EAXm(address);
262 swap(X86Registers::eax, src);
263 m_assembler.movq_EAXm(address);
264 swap(X86Registers::eax, src);
268 void storePtr(ImmPtr imm, ImplicitAddress address)
270 move(imm, scratchRegister);
271 storePtr(scratchRegister, address);
274 DataLabel32 storePtrWithAddressOffsetPatch(RegisterID src, Address address)
276 m_assembler.movq_rm_disp32(src, address.offset, address.base);
277 return DataLabel32(this);
280 void movePtrToDouble(RegisterID src, FPRegisterID dest)
282 m_assembler.movq_rr(src, dest);
285 void moveDoubleToPtr(FPRegisterID src, RegisterID dest)
287 m_assembler.movq_rr(src, dest);
290 void setPtr(Condition cond, RegisterID left, Imm32 right, RegisterID dest)
292 if (((cond == Equal) || (cond == NotEqual)) && !right.m_value)
293 m_assembler.testq_rr(left, left);
295 m_assembler.cmpq_ir(right.m_value, left);
296 m_assembler.setCC_r(x86Condition(cond), dest);
297 m_assembler.movzbl_rr(dest, dest);
300 Jump branchPtr(Condition cond, RegisterID left, RegisterID right)
302 m_assembler.cmpq_rr(right, left);
303 return Jump(m_assembler.jCC(x86Condition(cond)));
306 Jump branchPtr(Condition cond, RegisterID left, ImmPtr right)
308 move(right, scratchRegister);
309 return branchPtr(cond, left, scratchRegister);
312 Jump branchPtr(Condition cond, RegisterID left, Address right)
314 m_assembler.cmpq_mr(right.offset, right.base, left);
315 return Jump(m_assembler.jCC(x86Condition(cond)));
318 Jump branchPtr(Condition cond, AbsoluteAddress left, RegisterID right)
320 move(ImmPtr(left.m_ptr), scratchRegister);
321 return branchPtr(cond, Address(scratchRegister), right);
324 Jump branchPtr(Condition cond, Address left, RegisterID right)
326 m_assembler.cmpq_rm(right, left.offset, left.base);
327 return Jump(m_assembler.jCC(x86Condition(cond)));
330 Jump branchPtr(Condition cond, Address left, ImmPtr right)
332 move(right, scratchRegister);
333 return branchPtr(cond, left, scratchRegister);
336 Jump branchTestPtr(Condition cond, RegisterID reg, RegisterID mask)
338 m_assembler.testq_rr(reg, mask);
339 return Jump(m_assembler.jCC(x86Condition(cond)));
342 Jump branchTestPtr(Condition cond, RegisterID reg, Imm32 mask = Imm32(-1))
344 // if we are only interested in the low seven bits, this can be tested with a testb
345 if (mask.m_value == -1)
346 m_assembler.testq_rr(reg, reg);
347 else if ((mask.m_value & ~0x7f) == 0)
348 m_assembler.testb_i8r(mask.m_value, reg);
350 m_assembler.testq_i32r(mask.m_value, reg);
351 return Jump(m_assembler.jCC(x86Condition(cond)));
354 Jump branchTestPtr(Condition cond, Address address, Imm32 mask = Imm32(-1))
356 if (mask.m_value == -1)
357 m_assembler.cmpq_im(0, address.offset, address.base);
359 m_assembler.testq_i32m(mask.m_value, address.offset, address.base);
360 return Jump(m_assembler.jCC(x86Condition(cond)));
363 Jump branchTestPtr(Condition cond, BaseIndex address, Imm32 mask = Imm32(-1))
365 if (mask.m_value == -1)
366 m_assembler.cmpq_im(0, address.offset, address.base, address.index, address.scale);
368 m_assembler.testq_i32m(mask.m_value, address.offset, address.base, address.index, address.scale);
369 return Jump(m_assembler.jCC(x86Condition(cond)));
373 Jump branchAddPtr(Condition cond, RegisterID src, RegisterID dest)
375 ASSERT((cond == Overflow) || (cond == Zero) || (cond == NonZero));
377 return Jump(m_assembler.jCC(x86Condition(cond)));
380 Jump branchSubPtr(Condition cond, Imm32 imm, RegisterID dest)
382 ASSERT((cond == Overflow) || (cond == Zero) || (cond == NonZero));
384 return Jump(m_assembler.jCC(x86Condition(cond)));
387 DataLabelPtr moveWithPatch(ImmPtr initialValue, RegisterID dest)
389 m_assembler.movq_i64r(initialValue.asIntptr(), dest);
390 return DataLabelPtr(this);
393 Jump branchPtrWithPatch(Condition cond, RegisterID left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
395 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
396 return branchPtr(cond, left, scratchRegister);
399 Jump branchPtrWithPatch(Condition cond, Address left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
401 dataLabel = moveWithPatch(initialRightValue, scratchRegister);
402 return branchPtr(cond, left, scratchRegister);
405 DataLabelPtr storePtrWithPatch(ImmPtr initialValue, ImplicitAddress address)
407 DataLabelPtr label = moveWithPatch(initialValue, scratchRegister);
408 storePtr(scratchRegister, address);
412 using MacroAssemblerX86Common::branchTest8;
413 Jump branchTest8(Condition cond, ExtendedAddress address, Imm32 mask = Imm32(-1))
415 ImmPtr addr(reinterpret_cast<void*>(address.offset));
416 MacroAssemblerX86Common::move(addr, scratchRegister);
417 return MacroAssemblerX86Common::branchTest8(cond, BaseIndex(scratchRegister, address.base, TimesOne), mask);
420 bool supportsFloatingPoint() const { return true; }
421 // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
422 bool supportsFloatingPointTruncate() const { return true; }
423 bool supportsFloatingPointSqrt() const { return true; }
426 friend class LinkBuffer;
427 friend class RepatchBuffer;
429 static void linkCall(void* code, Call call, FunctionPtr function)
431 if (!call.isFlagSet(Call::Near))
432 X86Assembler::linkPointer(code, X86Assembler::labelFor(call.m_jmp, -REPTACH_OFFSET_CALL_R11), function.value());
434 X86Assembler::linkCall(code, call.m_jmp, function.value());
437 static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
439 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
442 static void repatchCall(CodeLocationCall call, FunctionPtr destination)
444 X86Assembler::repatchPointer(call.dataLabelPtrAtOffset(-REPTACH_OFFSET_CALL_R11).dataLocation(), destination.executableAddress());
451 #endif // ENABLE(ASSEMBLER)
453 #endif // MacroAssemblerX86_64_h