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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_X87_MACRO_ASSEMBLER_X87_H_ | 5 #ifndef V8_X87_MACRO_ASSEMBLER_X87_H_ |
6 #define V8_X87_MACRO_ASSEMBLER_X87_H_ | 6 #define V8_X87_MACRO_ASSEMBLER_X87_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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256 // Leave the current exit frame. Expects the return value in | 256 // Leave the current exit frame. Expects the return value in |
257 // register eax (untouched). | 257 // register eax (untouched). |
258 void LeaveApiExitFrame(bool restore_context); | 258 void LeaveApiExitFrame(bool restore_context); |
259 | 259 |
260 // Find the function context up the context chain. | 260 // Find the function context up the context chain. |
261 void LoadContext(Register dst, int context_chain_length); | 261 void LoadContext(Register dst, int context_chain_length); |
262 | 262 |
263 // Load the global proxy from the current context. | 263 // Load the global proxy from the current context. |
264 void LoadGlobalProxy(Register dst); | 264 void LoadGlobalProxy(Register dst); |
265 | 265 |
266 // Conditionally load the cached Array transitioned map of type | |
267 // transitioned_kind from the native context if the map in register | |
268 // map_in_out is the cached Array map in the native context of | |
269 // expected_kind. | |
270 void LoadTransitionedArrayMapConditional(ElementsKind expected_kind, | |
271 ElementsKind transitioned_kind, | |
272 Register map_in_out, | |
273 Register scratch, | |
274 Label* no_map_match); | |
275 | |
276 // Load the global function with the given index. | 266 // Load the global function with the given index. |
277 void LoadGlobalFunction(int index, Register function); | 267 void LoadGlobalFunction(int index, Register function); |
278 | 268 |
279 // Load the initial map from the global function. The registers | 269 // Load the initial map from the global function. The registers |
280 // function and map can be the same. | 270 // function and map can be the same. |
281 void LoadGlobalFunctionInitialMap(Register function, Register map); | 271 void LoadGlobalFunctionInitialMap(Register function, Register map); |
282 | 272 |
283 // Push and pop the registers that can hold pointers. | 273 // Push and pop the registers that can hold pointers. |
284 void PushSafepointRegisters() { pushad(); } | 274 void PushSafepointRegisters() { pushad(); } |
285 void PopSafepointRegisters() { popad(); } | 275 void PopSafepointRegisters() { popad(); } |
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374 void SafeMove(Register dst, const Immediate& x); | 364 void SafeMove(Register dst, const Immediate& x); |
375 void SafePush(const Immediate& x); | 365 void SafePush(const Immediate& x); |
376 | 366 |
377 // Compare object type for heap object. | 367 // Compare object type for heap object. |
378 // Incoming register is heap_object and outgoing register is map. | 368 // Incoming register is heap_object and outgoing register is map. |
379 void CmpObjectType(Register heap_object, InstanceType type, Register map); | 369 void CmpObjectType(Register heap_object, InstanceType type, Register map); |
380 | 370 |
381 // Compare instance type for map. | 371 // Compare instance type for map. |
382 void CmpInstanceType(Register map, InstanceType type); | 372 void CmpInstanceType(Register map, InstanceType type); |
383 | 373 |
384 // Check if a map for a JSObject indicates that the object can have both smi | |
385 // and HeapObject elements. Jump to the specified label if it does not. | |
386 void CheckFastObjectElements(Register map, Label* fail, | |
387 Label::Distance distance = Label::kFar); | |
388 | |
389 // Check if a map for a JSObject indicates that the object has fast smi only | |
390 // elements. Jump to the specified label if it does not. | |
391 void CheckFastSmiElements(Register map, Label* fail, | |
392 Label::Distance distance = Label::kFar); | |
393 | |
394 // Check to see if maybe_number can be stored as a double in | |
395 // FastDoubleElements. If it can, store it at the index specified by key in | |
396 // the FastDoubleElements array elements, otherwise jump to fail. | |
397 void StoreNumberToDoubleElements(Register maybe_number, Register elements, | |
398 Register key, Register scratch, Label* fail, | |
399 int offset = 0); | |
400 | |
401 // Compare an object's map with the specified map. | 374 // Compare an object's map with the specified map. |
402 void CompareMap(Register obj, Handle<Map> map); | 375 void CompareMap(Register obj, Handle<Map> map); |
403 | 376 |
404 // Check if the map of an object is equal to a specified map and branch to | 377 // Check if the map of an object is equal to a specified map and branch to |
405 // label if not. Skip the smi check if not required (object is known to be a | 378 // label if not. Skip the smi check if not required (object is known to be a |
406 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match | 379 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match |
407 // against maps that are ElementsKind transition maps of the specified map. | 380 // against maps that are ElementsKind transition maps of the specified map. |
408 void CheckMap(Register obj, Handle<Map> map, Label* fail, | 381 void CheckMap(Register obj, Handle<Map> map, Label* fail, |
409 SmiCheckType smi_check_type); | 382 SmiCheckType smi_check_type); |
410 | 383 |
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915 // AllocationMemento support. Arrays may have an associated | 888 // AllocationMemento support. Arrays may have an associated |
916 // AllocationMemento object that can be checked for in order to pretransition | 889 // AllocationMemento object that can be checked for in order to pretransition |
917 // to another type. | 890 // to another type. |
918 // On entry, receiver_reg should point to the array object. | 891 // On entry, receiver_reg should point to the array object. |
919 // scratch_reg gets clobbered. | 892 // scratch_reg gets clobbered. |
920 // If allocation info is present, conditional code is set to equal. | 893 // If allocation info is present, conditional code is set to equal. |
921 void TestJSArrayForAllocationMemento(Register receiver_reg, | 894 void TestJSArrayForAllocationMemento(Register receiver_reg, |
922 Register scratch_reg, | 895 Register scratch_reg, |
923 Label* no_memento_found); | 896 Label* no_memento_found); |
924 | 897 |
925 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, | |
926 Register scratch_reg, | |
927 Label* memento_found) { | |
928 Label no_memento_found; | |
929 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, | |
930 &no_memento_found); | |
931 j(equal, memento_found); | |
932 bind(&no_memento_found); | |
933 } | |
934 | |
935 // Jumps to found label if a prototype map has dictionary elements. | |
936 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, | |
937 Register scratch1, Label* found); | |
938 | |
939 private: | 898 private: |
940 bool generating_stub_; | 899 bool generating_stub_; |
941 bool has_frame_; | 900 bool has_frame_; |
942 // This handle will be patched with the code object on installation. | 901 // This handle will be patched with the code object on installation. |
943 Handle<Object> code_object_; | 902 Handle<Object> code_object_; |
944 | 903 |
945 // Helper functions for generating invokes. | 904 // Helper functions for generating invokes. |
946 void InvokePrologue(const ParameterCount& expected, | 905 void InvokePrologue(const ParameterCount& expected, |
947 const ParameterCount& actual, Label* done, | 906 const ParameterCount& actual, Label* done, |
948 bool* definitely_mismatches, InvokeFlag flag, | 907 bool* definitely_mismatches, InvokeFlag flag, |
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1032 inline Operand NativeContextOperand() { | 991 inline Operand NativeContextOperand() { |
1033 return ContextOperand(esi, Context::NATIVE_CONTEXT_INDEX); | 992 return ContextOperand(esi, Context::NATIVE_CONTEXT_INDEX); |
1034 } | 993 } |
1035 | 994 |
1036 #define ACCESS_MASM(masm) masm-> | 995 #define ACCESS_MASM(masm) masm-> |
1037 | 996 |
1038 } // namespace internal | 997 } // namespace internal |
1039 } // namespace v8 | 998 } // namespace v8 |
1040 | 999 |
1041 #endif // V8_X87_MACRO_ASSEMBLER_X87_H_ | 1000 #endif // V8_X87_MACRO_ASSEMBLER_X87_H_ |
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