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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/bailout-reason.h" | 9 #include "src/bailout-reason.h" |
10 #include "src/frames.h" | 10 #include "src/frames.h" |
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64 public: | 64 public: |
65 // The isolate parameter can be NULL if the macro assembler should | 65 // The isolate parameter can be NULL if the macro assembler should |
66 // not use isolate-dependent functionality. In this case, it's the | 66 // not use isolate-dependent functionality. In this case, it's the |
67 // responsibility of the caller to never invoke such function on the | 67 // responsibility of the caller to never invoke such function on the |
68 // macro assembler. | 68 // macro assembler. |
69 MacroAssembler(Isolate* isolate, void* buffer, int size); | 69 MacroAssembler(Isolate* isolate, void* buffer, int size); |
70 | 70 |
71 void Load(Register dst, const Operand& src, Representation r); | 71 void Load(Register dst, const Operand& src, Representation r); |
72 void Store(Register src, const Operand& dst, Representation r); | 72 void Store(Register src, const Operand& dst, Representation r); |
73 | 73 |
74 // Load a register with a long value as efficiently as possible. | |
75 void Set(Register dst, int32_t x) { | |
76 if (x == 0) { | |
77 xor_(dst, dst); | |
78 } else { | |
79 mov(dst, Immediate(x)); | |
80 } | |
81 } | |
82 void Set(const Operand& dst, int32_t x) { mov(dst, Immediate(x)); } | |
83 | |
84 // Operations on roots in the root-array. | 74 // Operations on roots in the root-array. |
85 void LoadRoot(Register destination, Heap::RootListIndex index); | 75 void LoadRoot(Register destination, Heap::RootListIndex index); |
86 void StoreRoot(Register source, Register scratch, Heap::RootListIndex index); | 76 void StoreRoot(Register source, Register scratch, Heap::RootListIndex index); |
87 void CompareRoot(Register with, Register scratch, Heap::RootListIndex index); | 77 void CompareRoot(Register with, Register scratch, Heap::RootListIndex index); |
88 // These methods can only be used with constant roots (i.e. non-writable | 78 // These methods can only be used with constant roots (i.e. non-writable |
89 // and not in new space). | 79 // and not in new space). |
90 void CompareRoot(Register with, Heap::RootListIndex index); | 80 void CompareRoot(Register with, Heap::RootListIndex index); |
91 void CompareRoot(const Operand& with, Heap::RootListIndex index); | 81 void CompareRoot(const Operand& with, Heap::RootListIndex index); |
92 void PushRoot(Heap::RootListIndex index); | |
93 | |
94 // Compare the object in a register to a value and jump if they are equal. | |
95 void JumpIfRoot(Register with, Heap::RootListIndex index, Label* if_equal, | |
96 Label::Distance if_equal_distance = Label::kNear) { | |
97 CompareRoot(with, index); | |
98 j(equal, if_equal, if_equal_distance); | |
99 } | |
100 | |
101 // Compare the object in a register to a value and jump if they are not equal. | |
102 void JumpIfNotRoot(Register with, Heap::RootListIndex index, | |
103 Label* if_not_equal, | |
104 Label::Distance if_not_equal_distance = Label::kNear) { | |
105 CompareRoot(with, index); | |
106 j(not_equal, if_not_equal, if_not_equal_distance); | |
107 } | |
108 | 82 |
109 // --------------------------------------------------------------------------- | 83 // --------------------------------------------------------------------------- |
110 // GC Support | 84 // GC Support |
111 enum RememberedSetFinalAction { | 85 enum RememberedSetFinalAction { |
112 kReturnAtEnd, | 86 kReturnAtEnd, |
113 kFallThroughAtEnd | 87 kFallThroughAtEnd |
114 }; | 88 }; |
115 | 89 |
116 // Record in the remembered set the fact that we have a pointer to new space | 90 // Record in the remembered set the fact that we have a pointer to new space |
117 // at the address pointed to by the addr register. Only works if addr is not | 91 // at the address pointed to by the addr register. Only works if addr is not |
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281 // argument in register esi. | 255 // argument in register esi. |
282 void LeaveExitFrame(bool save_doubles); | 256 void LeaveExitFrame(bool save_doubles); |
283 | 257 |
284 // Leave the current exit frame. Expects the return value in | 258 // Leave the current exit frame. Expects the return value in |
285 // register eax (untouched). | 259 // register eax (untouched). |
286 void LeaveApiExitFrame(bool restore_context); | 260 void LeaveApiExitFrame(bool restore_context); |
287 | 261 |
288 // Find the function context up the context chain. | 262 // Find the function context up the context chain. |
289 void LoadContext(Register dst, int context_chain_length); | 263 void LoadContext(Register dst, int context_chain_length); |
290 | 264 |
291 // Load the global proxy from the current context. | |
292 void LoadGlobalProxy(Register dst); | |
293 | |
294 // Conditionally load the cached Array transitioned map of type | 265 // Conditionally load the cached Array transitioned map of type |
295 // transitioned_kind from the native context if the map in register | 266 // transitioned_kind from the native context if the map in register |
296 // map_in_out is the cached Array map in the native context of | 267 // map_in_out is the cached Array map in the native context of |
297 // expected_kind. | 268 // expected_kind. |
298 void LoadTransitionedArrayMapConditional( | 269 void LoadTransitionedArrayMapConditional( |
299 ElementsKind expected_kind, | 270 ElementsKind expected_kind, |
300 ElementsKind transitioned_kind, | 271 ElementsKind transitioned_kind, |
301 Register map_in_out, | 272 Register map_in_out, |
302 Register scratch, | 273 Register scratch, |
303 Label* no_map_match); | 274 Label* no_map_match); |
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587 | 558 |
588 // Abort execution if argument is a smi, enabled via --debug-code. | 559 // Abort execution if argument is a smi, enabled via --debug-code. |
589 void AssertNotSmi(Register object); | 560 void AssertNotSmi(Register object); |
590 | 561 |
591 // Abort execution if argument is not a string, enabled via --debug-code. | 562 // Abort execution if argument is not a string, enabled via --debug-code. |
592 void AssertString(Register object); | 563 void AssertString(Register object); |
593 | 564 |
594 // Abort execution if argument is not a name, enabled via --debug-code. | 565 // Abort execution if argument is not a name, enabled via --debug-code. |
595 void AssertName(Register object); | 566 void AssertName(Register object); |
596 | 567 |
597 // Abort execution if argument is not a JSFunction, enabled via --debug-code. | |
598 void AssertFunction(Register object); | |
599 | |
600 // Abort execution if argument is not undefined or an AllocationSite, enabled | 568 // Abort execution if argument is not undefined or an AllocationSite, enabled |
601 // via --debug-code. | 569 // via --debug-code. |
602 void AssertUndefinedOrAllocationSite(Register object); | 570 void AssertUndefinedOrAllocationSite(Register object); |
603 | 571 |
604 // --------------------------------------------------------------------------- | 572 // --------------------------------------------------------------------------- |
605 // Exception handling | 573 // Exception handling |
606 | 574 |
607 // Push a new stack handler and link it into stack handler chain. | 575 // Push a new stack handler and link it into stack handler chain. |
608 void PushStackHandler(); | 576 void PushStackHandler(); |
609 | 577 |
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828 | 796 |
829 // Return and drop arguments from stack, where the number of arguments | 797 // Return and drop arguments from stack, where the number of arguments |
830 // may be bigger than 2^16 - 1. Requires a scratch register. | 798 // may be bigger than 2^16 - 1. Requires a scratch register. |
831 void Ret(int bytes_dropped, Register scratch); | 799 void Ret(int bytes_dropped, Register scratch); |
832 | 800 |
833 // Emit code to discard a non-negative number of pointer-sized elements | 801 // Emit code to discard a non-negative number of pointer-sized elements |
834 // from the stack, clobbering only the esp register. | 802 // from the stack, clobbering only the esp register. |
835 void Drop(int element_count); | 803 void Drop(int element_count); |
836 | 804 |
837 void Call(Label* target) { call(target); } | 805 void Call(Label* target) { call(target); } |
838 void Call(Handle<Code> target, RelocInfo::Mode rmode) { call(target, rmode); } | |
839 void Jump(Handle<Code> target, RelocInfo::Mode rmode) { jmp(target, rmode); } | |
840 void Push(Register src) { push(src); } | 806 void Push(Register src) { push(src); } |
841 void Push(const Operand& src) { push(src); } | |
842 void Push(Immediate value) { push(value); } | |
843 void Pop(Register dst) { pop(dst); } | 807 void Pop(Register dst) { pop(dst); } |
844 void PushReturnAddressFrom(Register src) { push(src); } | |
845 void PopReturnAddressTo(Register dst) { pop(dst); } | |
846 | 808 |
847 // Non-SSE2 instructions. | 809 // Non-SSE2 instructions. |
848 void Pextrd(Register dst, XMMRegister src, int8_t imm8); | 810 void Pextrd(Register dst, XMMRegister src, int8_t imm8); |
849 void Pinsrd(XMMRegister dst, Register src, int8_t imm8) { | 811 void Pinsrd(XMMRegister dst, Register src, int8_t imm8) { |
850 Pinsrd(dst, Operand(src), imm8); | 812 Pinsrd(dst, Operand(src), imm8); |
851 } | 813 } |
852 void Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8); | 814 void Pinsrd(XMMRegister dst, const Operand& src, int8_t imm8); |
853 | 815 |
854 void Lzcnt(Register dst, Register src) { Lzcnt(dst, Operand(src)); } | 816 void Lzcnt(Register dst, Register src) { Lzcnt(dst, Operand(src)); } |
855 void Lzcnt(Register dst, const Operand& src); | 817 void Lzcnt(Register dst, const Operand& src); |
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1133 } \ | 1095 } \ |
1134 masm-> | 1096 masm-> |
1135 #else | 1097 #else |
1136 #define ACCESS_MASM(masm) masm-> | 1098 #define ACCESS_MASM(masm) masm-> |
1137 #endif | 1099 #endif |
1138 | 1100 |
1139 | 1101 |
1140 } } // namespace v8::internal | 1102 } } // namespace v8::internal |
1141 | 1103 |
1142 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 1104 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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