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26 #ifndef MacroAssemblerX86_h
27 #define MacroAssemblerX86_h
29 #if ENABLE(ASSEMBLER) && CPU(X86)
31 #include "MacroAssemblerX86Common.h"
35 class MacroAssemblerX86 : public MacroAssemblerX86Common {
37 static const Scale ScalePtr = TimesFour;
39 using MacroAssemblerX86Common::add32;
40 using MacroAssemblerX86Common::and32;
41 using MacroAssemblerX86Common::branchAdd32;
42 using MacroAssemblerX86Common::branchSub32;
43 using MacroAssemblerX86Common::sub32;
44 using MacroAssemblerX86Common::or32;
45 using MacroAssemblerX86Common::load32;
46 using MacroAssemblerX86Common::store32;
47 using MacroAssemblerX86Common::branch32;
48 using MacroAssemblerX86Common::call;
49 using MacroAssemblerX86Common::jump;
50 using MacroAssemblerX86Common::addDouble;
51 using MacroAssemblerX86Common::loadDouble;
52 using MacroAssemblerX86Common::storeDouble;
53 using MacroAssemblerX86Common::convertInt32ToDouble;
54 using MacroAssemblerX86Common::branchTest8;
56 void add32(TrustedImm32 imm, RegisterID src, RegisterID dest)
58 m_assembler.leal_mr(imm.m_value, src, dest);
61 void add32(TrustedImm32 imm, AbsoluteAddress address)
63 m_assembler.addl_im(imm.m_value, address.m_ptr);
66 void add32(AbsoluteAddress address, RegisterID dest)
68 m_assembler.addl_mr(address.m_ptr, dest);
71 void add64(TrustedImm32 imm, AbsoluteAddress address)
73 m_assembler.addl_im(imm.m_value, address.m_ptr);
74 m_assembler.adcl_im(imm.m_value >> 31, reinterpret_cast<const char*>(address.m_ptr) + sizeof(int32_t));
77 void and32(TrustedImm32 imm, AbsoluteAddress address)
79 m_assembler.andl_im(imm.m_value, address.m_ptr);
82 void or32(TrustedImm32 imm, AbsoluteAddress address)
84 m_assembler.orl_im(imm.m_value, address.m_ptr);
87 void sub32(TrustedImm32 imm, AbsoluteAddress address)
89 m_assembler.subl_im(imm.m_value, address.m_ptr);
92 void load32(const void* address, RegisterID dest)
94 m_assembler.movl_mr(address, dest);
97 ConvertibleLoadLabel convertibleLoadPtr(Address address, RegisterID dest)
99 ConvertibleLoadLabel result = ConvertibleLoadLabel(this);
100 m_assembler.movl_mr(address.offset, address.base, dest);
104 void addDouble(AbsoluteAddress address, FPRegisterID dest)
106 m_assembler.addsd_mr(address.m_ptr, dest);
109 void storeDouble(FPRegisterID src, const void* address)
111 ASSERT(isSSE2Present());
112 m_assembler.movsd_rm(src, address);
115 void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
117 m_assembler.cvtsi2sd_mr(src.m_ptr, dest);
120 void store32(TrustedImm32 imm, void* address)
122 m_assembler.movl_i32m(imm.m_value, address);
125 void store32(RegisterID src, void* address)
127 m_assembler.movl_rm(src, address);
130 Jump branchAdd32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
132 m_assembler.addl_im(imm.m_value, dest.m_ptr);
133 return Jump(m_assembler.jCC(x86Condition(cond)));
136 Jump branchSub32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
138 m_assembler.subl_im(imm.m_value, dest.m_ptr);
139 return Jump(m_assembler.jCC(x86Condition(cond)));
142 Jump branch32(RelationalCondition cond, AbsoluteAddress left, RegisterID right)
144 m_assembler.cmpl_rm(right, left.m_ptr);
145 return Jump(m_assembler.jCC(x86Condition(cond)));
148 Jump branch32(RelationalCondition cond, AbsoluteAddress left, TrustedImm32 right)
150 m_assembler.cmpl_im(right.m_value, left.m_ptr);
151 return Jump(m_assembler.jCC(x86Condition(cond)));
156 return Call(m_assembler.call(), Call::Linkable);
159 // Address is a memory location containing the address to jump to
160 void jump(AbsoluteAddress address)
162 m_assembler.jmp_m(address.m_ptr);
165 Call tailRecursiveCall()
167 return Call::fromTailJump(jump());
170 Call makeTailRecursiveCall(Jump oldJump)
172 return Call::fromTailJump(oldJump);
176 DataLabelPtr moveWithPatch(TrustedImmPtr initialValue, RegisterID dest)
178 m_assembler.movl_i32r(initialValue.asIntptr(), dest);
179 return DataLabelPtr(this);
182 Jump branchTest8(ResultCondition cond, AbsoluteAddress address, TrustedImm32 mask = TrustedImm32(-1))
184 ASSERT(mask.m_value >= -128 && mask.m_value <= 255);
185 if (mask.m_value == -1)
186 m_assembler.cmpb_im(0, address.m_ptr);
188 m_assembler.testb_im(mask.m_value, address.m_ptr);
189 return Jump(m_assembler.jCC(x86Condition(cond)));
192 Jump branchPtrWithPatch(RelationalCondition cond, RegisterID left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
194 m_assembler.cmpl_ir_force32(initialRightValue.asIntptr(), left);
195 dataLabel = DataLabelPtr(this);
196 return Jump(m_assembler.jCC(x86Condition(cond)));
199 Jump branchPtrWithPatch(RelationalCondition cond, Address left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
201 m_assembler.cmpl_im_force32(initialRightValue.asIntptr(), left.offset, left.base);
202 dataLabel = DataLabelPtr(this);
203 return Jump(m_assembler.jCC(x86Condition(cond)));
206 DataLabelPtr storePtrWithPatch(TrustedImmPtr initialValue, ImplicitAddress address)
208 m_assembler.movl_i32m(initialValue.asIntptr(), address.offset, address.base);
209 return DataLabelPtr(this);
212 static bool supportsFloatingPoint() { return isSSE2Present(); }
213 // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
214 static bool supportsFloatingPointTruncate() { return isSSE2Present(); }
215 static bool supportsFloatingPointSqrt() { return isSSE2Present(); }
216 static bool supportsFloatingPointAbs() { return isSSE2Present(); }
218 static FunctionPtr readCallTarget(CodeLocationCall call)
220 intptr_t offset = reinterpret_cast<int32_t*>(call.dataLocation())[-1];
221 return FunctionPtr(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(call.dataLocation()) + offset));
225 friend class LinkBuffer;
226 friend class RepatchBuffer;
228 static void linkCall(void* code, Call call, FunctionPtr function)
230 X86Assembler::linkCall(code, call.m_label, function.value());
233 static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
235 X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
238 static void repatchCall(CodeLocationCall call, FunctionPtr destination)
240 X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
246 #endif // ENABLE(ASSEMBLER)
248 #endif // MacroAssemblerX86_h