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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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42 TAG_OBJECT = 1 << 0, | 42 TAG_OBJECT = 1 << 0, |
43 // The content of the result register already contains the allocation top in | 43 // The content of the result register already contains the allocation top in |
44 // new space. | 44 // new space. |
45 RESULT_CONTAINS_TOP = 1 << 1 | 45 RESULT_CONTAINS_TOP = 1 << 1 |
46 }; | 46 }; |
47 | 47 |
48 // Convenience for platform-independent signatures. We do not normally | 48 // Convenience for platform-independent signatures. We do not normally |
49 // distinguish memory operands from other operands on ia32. | 49 // distinguish memory operands from other operands on ia32. |
50 typedef Operand MemOperand; | 50 typedef Operand MemOperand; |
51 | 51 |
52 // Forward declaration. | |
53 class PostCallGenerator; | |
54 | |
55 // MacroAssembler implements a collection of frequently used macros. | 52 // MacroAssembler implements a collection of frequently used macros. |
56 class MacroAssembler: public Assembler { | 53 class MacroAssembler: public Assembler { |
57 public: | 54 public: |
58 // The isolate parameter can be NULL if the macro assembler should | 55 // The isolate parameter can be NULL if the macro assembler should |
59 // not use isolate-dependent functionality. In this case, it's the | 56 // not use isolate-dependent functionality. In this case, it's the |
60 // responsibility of the caller to never invoke such function on the | 57 // responsibility of the caller to never invoke such function on the |
61 // macro assembler. | 58 // macro assembler. |
62 MacroAssembler(Isolate* isolate, void* buffer, int size); | 59 MacroAssembler(Isolate* isolate, void* buffer, int size); |
63 | 60 |
64 // --------------------------------------------------------------------------- | 61 // --------------------------------------------------------------------------- |
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153 void LoadFromSafepointRegisterSlot(Register dst, Register src); | 150 void LoadFromSafepointRegisterSlot(Register dst, Register src); |
154 | 151 |
155 // --------------------------------------------------------------------------- | 152 // --------------------------------------------------------------------------- |
156 // JavaScript invokes | 153 // JavaScript invokes |
157 | 154 |
158 // Invoke the JavaScript function code by either calling or jumping. | 155 // Invoke the JavaScript function code by either calling or jumping. |
159 void InvokeCode(const Operand& code, | 156 void InvokeCode(const Operand& code, |
160 const ParameterCount& expected, | 157 const ParameterCount& expected, |
161 const ParameterCount& actual, | 158 const ParameterCount& actual, |
162 InvokeFlag flag, | 159 InvokeFlag flag, |
163 PostCallGenerator* post_call_generator = NULL); | 160 CallWrapper* call_wrapper = NULL); |
164 | 161 |
165 void InvokeCode(Handle<Code> code, | 162 void InvokeCode(Handle<Code> code, |
166 const ParameterCount& expected, | 163 const ParameterCount& expected, |
167 const ParameterCount& actual, | 164 const ParameterCount& actual, |
168 RelocInfo::Mode rmode, | 165 RelocInfo::Mode rmode, |
169 InvokeFlag flag, | 166 InvokeFlag flag, |
170 PostCallGenerator* post_call_generator = NULL); | 167 CallWrapper* call_wrapper = NULL); |
171 | 168 |
172 // Invoke the JavaScript function in the given register. Changes the | 169 // Invoke the JavaScript function in the given register. Changes the |
173 // current context to the context in the function before invoking. | 170 // current context to the context in the function before invoking. |
174 void InvokeFunction(Register function, | 171 void InvokeFunction(Register function, |
175 const ParameterCount& actual, | 172 const ParameterCount& actual, |
176 InvokeFlag flag, | 173 InvokeFlag flag, |
177 PostCallGenerator* post_call_generator = NULL); | 174 CallWrapper* call_wrapper = NULL); |
178 | 175 |
179 void InvokeFunction(JSFunction* function, | 176 void InvokeFunction(JSFunction* function, |
180 const ParameterCount& actual, | 177 const ParameterCount& actual, |
181 InvokeFlag flag, | 178 InvokeFlag flag, |
182 PostCallGenerator* post_call_generator = NULL); | 179 CallWrapper* call_wrapper = NULL); |
183 | 180 |
184 // Invoke specified builtin JavaScript function. Adds an entry to | 181 // Invoke specified builtin JavaScript function. Adds an entry to |
185 // the unresolved list if the name does not resolve. | 182 // the unresolved list if the name does not resolve. |
186 void InvokeBuiltin(Builtins::JavaScript id, | 183 void InvokeBuiltin(Builtins::JavaScript id, |
187 InvokeFlag flag, | 184 InvokeFlag flag, |
188 PostCallGenerator* post_call_generator = NULL); | 185 CallWrapper* call_wrapper = NULL); |
189 | 186 |
190 // Store the function for the given builtin in the target register. | 187 // Store the function for the given builtin in the target register. |
191 void GetBuiltinFunction(Register target, Builtins::JavaScript id); | 188 void GetBuiltinFunction(Register target, Builtins::JavaScript id); |
192 | 189 |
193 // Store the code object for the given builtin in the target register. | 190 // Store the code object for the given builtin in the target register. |
194 void GetBuiltinEntry(Register target, Builtins::JavaScript id); | 191 void GetBuiltinEntry(Register target, Builtins::JavaScript id); |
195 | 192 |
196 // Expression support | 193 // Expression support |
197 void Set(Register dst, const Immediate& x); | 194 void Set(Register dst, const Immediate& x); |
198 void Set(const Operand& dst, const Immediate& x); | 195 void Set(const Operand& dst, const Immediate& x); |
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645 // This handle will be patched with the code object on installation. | 642 // This handle will be patched with the code object on installation. |
646 Handle<Object> code_object_; | 643 Handle<Object> code_object_; |
647 | 644 |
648 // Helper functions for generating invokes. | 645 // Helper functions for generating invokes. |
649 void InvokePrologue(const ParameterCount& expected, | 646 void InvokePrologue(const ParameterCount& expected, |
650 const ParameterCount& actual, | 647 const ParameterCount& actual, |
651 Handle<Code> code_constant, | 648 Handle<Code> code_constant, |
652 const Operand& code_operand, | 649 const Operand& code_operand, |
653 NearLabel* done, | 650 NearLabel* done, |
654 InvokeFlag flag, | 651 InvokeFlag flag, |
655 PostCallGenerator* post_call_generator = NULL); | 652 CallWrapper* call_wrapper = NULL); |
656 | 653 |
657 // Activation support. | 654 // Activation support. |
658 void EnterFrame(StackFrame::Type type); | 655 void EnterFrame(StackFrame::Type type); |
659 void LeaveFrame(StackFrame::Type type); | 656 void LeaveFrame(StackFrame::Type type); |
660 | 657 |
661 void EnterExitFramePrologue(); | 658 void EnterExitFramePrologue(); |
662 void EnterExitFrameEpilogue(int argc, bool save_doubles); | 659 void EnterExitFrameEpilogue(int argc, bool save_doubles); |
663 | 660 |
664 void LeaveExitFrameEpilogue(); | 661 void LeaveExitFrameEpilogue(); |
665 | 662 |
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727 // Macro assembler to emit code. | 724 // Macro assembler to emit code. |
728 MacroAssembler* masm() { return &masm_; } | 725 MacroAssembler* masm() { return &masm_; } |
729 | 726 |
730 private: | 727 private: |
731 byte* address_; // The address of the code being patched. | 728 byte* address_; // The address of the code being patched. |
732 int size_; // Number of bytes of the expected patch size. | 729 int size_; // Number of bytes of the expected patch size. |
733 MacroAssembler masm_; // Macro assembler used to generate the code. | 730 MacroAssembler masm_; // Macro assembler used to generate the code. |
734 }; | 731 }; |
735 | 732 |
736 | 733 |
737 // Helper class for generating code or data associated with the code | |
738 // right after a call instruction. As an example this can be used to | |
739 // generate safepoint data after calls for crankshaft. | |
740 class PostCallGenerator { | |
741 public: | |
742 PostCallGenerator() { } | |
743 virtual ~PostCallGenerator() { } | |
744 virtual void Generate() = 0; | |
745 }; | |
746 | |
747 | |
748 // ----------------------------------------------------------------------------- | 734 // ----------------------------------------------------------------------------- |
749 // Static helper functions. | 735 // Static helper functions. |
750 | 736 |
751 // Generate an Operand for loading a field from an object. | 737 // Generate an Operand for loading a field from an object. |
752 static inline Operand FieldOperand(Register object, int offset) { | 738 static inline Operand FieldOperand(Register object, int offset) { |
753 return Operand(object, offset - kHeapObjectTag); | 739 return Operand(object, offset - kHeapObjectTag); |
754 } | 740 } |
755 | 741 |
756 | 742 |
757 // Generate an Operand for loading an indexed field from an object. | 743 // Generate an Operand for loading an indexed field from an object. |
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795 } \ | 781 } \ |
796 masm-> | 782 masm-> |
797 #else | 783 #else |
798 #define ACCESS_MASM(masm) masm-> | 784 #define ACCESS_MASM(masm) masm-> |
799 #endif | 785 #endif |
800 | 786 |
801 | 787 |
802 } } // namespace v8::internal | 788 } } // namespace v8::internal |
803 | 789 |
804 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 790 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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