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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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| 30 #include "bootstrapper.h" | 30 #include "bootstrapper.h" |
| 31 #include "code-stubs.h" | 31 #include "code-stubs.h" |
| 32 #include "factory.h" | 32 #include "factory.h" |
| 33 #include "gdb-jit.h" | 33 #include "gdb-jit.h" |
| 34 #include "macro-assembler.h" | 34 #include "macro-assembler.h" |
| 35 | 35 |
| 36 namespace v8 { | 36 namespace v8 { |
| 37 namespace internal { | 37 namespace internal { |
| 38 | 38 |
| 39 bool CodeStub::FindCodeInCache(Code** code_out) { | 39 bool CodeStub::FindCodeInCache(Code** code_out) { |
| 40 int index = HEAP->code_stubs()->FindEntry(GetKey()); | 40 Heap* heap = Isolate::Current()->heap(); |
| 41 int index = heap->code_stubs()->FindEntry(GetKey()); |
| 41 if (index != NumberDictionary::kNotFound) { | 42 if (index != NumberDictionary::kNotFound) { |
| 42 *code_out = Code::cast(HEAP->code_stubs()->ValueAt(index)); | 43 *code_out = Code::cast(heap->code_stubs()->ValueAt(index)); |
| 43 return true; | 44 return true; |
| 44 } | 45 } |
| 45 return false; | 46 return false; |
| 46 } | 47 } |
| 47 | 48 |
| 48 | 49 |
| 49 void CodeStub::GenerateCode(MacroAssembler* masm) { | 50 void CodeStub::GenerateCode(MacroAssembler* masm) { |
| 50 // Update the static counter each time a new code stub is generated. | 51 // Update the static counter each time a new code stub is generated. |
| 51 masm->isolate()->counters()->code_stubs()->Increment(); | 52 masm->isolate()->counters()->code_stubs()->Increment(); |
| 52 | 53 |
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| 79 #endif | 80 #endif |
| 80 } | 81 } |
| 81 | 82 |
| 82 | 83 |
| 83 int CodeStub::GetCodeKind() { | 84 int CodeStub::GetCodeKind() { |
| 84 return Code::STUB; | 85 return Code::STUB; |
| 85 } | 86 } |
| 86 | 87 |
| 87 | 88 |
| 88 Handle<Code> CodeStub::GetCode() { | 89 Handle<Code> CodeStub::GetCode() { |
| 90 Isolate* isolate = Isolate::Current(); |
| 91 Factory* factory = isolate->factory(); |
| 92 Heap* heap = isolate->heap(); |
| 89 Code* code; | 93 Code* code; |
| 90 if (!FindCodeInCache(&code)) { | 94 if (!FindCodeInCache(&code)) { |
| 91 v8::HandleScope scope; | 95 HandleScope scope(isolate); |
| 92 | 96 |
| 93 // Generate the new code. | 97 // Generate the new code. |
| 94 MacroAssembler masm(NULL, 256); | 98 MacroAssembler masm(NULL, 256); |
| 95 GenerateCode(&masm); | 99 GenerateCode(&masm); |
| 96 | 100 |
| 97 // Create the code object. | 101 // Create the code object. |
| 98 CodeDesc desc; | 102 CodeDesc desc; |
| 99 masm.GetCode(&desc); | 103 masm.GetCode(&desc); |
| 100 | 104 |
| 101 // Copy the generated code into a heap object. | 105 // Copy the generated code into a heap object. |
| 102 Code::Flags flags = Code::ComputeFlags( | 106 Code::Flags flags = Code::ComputeFlags( |
| 103 static_cast<Code::Kind>(GetCodeKind()), | 107 static_cast<Code::Kind>(GetCodeKind()), |
| 104 InLoop(), | 108 InLoop(), |
| 105 GetICState()); | 109 GetICState()); |
| 106 Handle<Code> new_object = FACTORY->NewCode( | 110 Handle<Code> new_object = factory->NewCode( |
| 107 desc, flags, masm.CodeObject(), NeedsImmovableCode()); | 111 desc, flags, masm.CodeObject(), NeedsImmovableCode()); |
| 108 RecordCodeGeneration(*new_object, &masm); | 112 RecordCodeGeneration(*new_object, &masm); |
| 109 FinishCode(*new_object); | 113 FinishCode(*new_object); |
| 110 | 114 |
| 111 // Update the dictionary and the root in Heap. | 115 // Update the dictionary and the root in Heap. |
| 112 Handle<NumberDictionary> dict = | 116 Handle<NumberDictionary> dict = |
| 113 FACTORY->DictionaryAtNumberPut( | 117 factory->DictionaryAtNumberPut( |
| 114 Handle<NumberDictionary>(HEAP->code_stubs()), | 118 Handle<NumberDictionary>(heap->code_stubs()), |
| 115 GetKey(), | 119 GetKey(), |
| 116 new_object); | 120 new_object); |
| 117 HEAP->public_set_code_stubs(*dict); | 121 heap->public_set_code_stubs(*dict); |
| 118 | 122 |
| 119 code = *new_object; | 123 code = *new_object; |
| 120 } | 124 } |
| 121 | 125 |
| 122 ASSERT(!NeedsImmovableCode() || HEAP->lo_space()->Contains(code)); | 126 ASSERT(!NeedsImmovableCode() || heap->lo_space()->Contains(code)); |
| 123 return Handle<Code>(code); | 127 return Handle<Code>(code, isolate); |
| 124 } | 128 } |
| 125 | 129 |
| 126 | 130 |
| 127 MaybeObject* CodeStub::TryGetCode() { | 131 MaybeObject* CodeStub::TryGetCode() { |
| 128 Code* code; | 132 Code* code; |
| 129 if (!FindCodeInCache(&code)) { | 133 if (!FindCodeInCache(&code)) { |
| 130 // Generate the new code. | 134 // Generate the new code. |
| 131 MacroAssembler masm(NULL, 256); | 135 MacroAssembler masm(NULL, 256); |
| 132 GenerateCode(&masm); | 136 GenerateCode(&masm); |
| 137 Heap* heap = masm.isolate()->heap(); |
| 133 | 138 |
| 134 // Create the code object. | 139 // Create the code object. |
| 135 CodeDesc desc; | 140 CodeDesc desc; |
| 136 masm.GetCode(&desc); | 141 masm.GetCode(&desc); |
| 137 | 142 |
| 138 // Try to copy the generated code into a heap object. | 143 // Try to copy the generated code into a heap object. |
| 139 Code::Flags flags = Code::ComputeFlags( | 144 Code::Flags flags = Code::ComputeFlags( |
| 140 static_cast<Code::Kind>(GetCodeKind()), | 145 static_cast<Code::Kind>(GetCodeKind()), |
| 141 InLoop(), | 146 InLoop(), |
| 142 GetICState()); | 147 GetICState()); |
| 143 Object* new_object; | 148 Object* new_object; |
| 144 { MaybeObject* maybe_new_object = | 149 { MaybeObject* maybe_new_object = |
| 145 HEAP->CreateCode(desc, flags, masm.CodeObject()); | 150 heap->CreateCode(desc, flags, masm.CodeObject()); |
| 146 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; | 151 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; |
| 147 } | 152 } |
| 148 code = Code::cast(new_object); | 153 code = Code::cast(new_object); |
| 149 RecordCodeGeneration(code, &masm); | 154 RecordCodeGeneration(code, &masm); |
| 150 FinishCode(code); | 155 FinishCode(code); |
| 151 | 156 |
| 152 // Try to update the code cache but do not fail if unable. | 157 // Try to update the code cache but do not fail if unable. |
| 153 MaybeObject* maybe_new_object = | 158 MaybeObject* maybe_new_object = |
| 154 HEAP->code_stubs()->AtNumberPut(GetKey(), code); | 159 heap->code_stubs()->AtNumberPut(GetKey(), code); |
| 155 if (maybe_new_object->ToObject(&new_object)) { | 160 if (maybe_new_object->ToObject(&new_object)) { |
| 156 HEAP->public_set_code_stubs(NumberDictionary::cast(new_object)); | 161 heap->public_set_code_stubs(NumberDictionary::cast(new_object)); |
| 157 } | 162 } |
| 158 } | 163 } |
| 159 | 164 |
| 160 return code; | 165 return code; |
| 161 } | 166 } |
| 162 | 167 |
| 163 | 168 |
| 164 const char* CodeStub::MajorName(CodeStub::Major major_key, | 169 const char* CodeStub::MajorName(CodeStub::Major major_key, |
| 165 bool allow_unknown_keys) { | 170 bool allow_unknown_keys) { |
| 166 switch (major_key) { | 171 switch (major_key) { |
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| 226 OS::SNPrintF(Vector<char>(name_, kMaxNameLength), | 231 OS::SNPrintF(Vector<char>(name_, kMaxNameLength), |
| 227 "InstanceofStub%s%s%s", | 232 "InstanceofStub%s%s%s", |
| 228 args, | 233 args, |
| 229 inline_check, | 234 inline_check, |
| 230 return_true_false_object); | 235 return_true_false_object); |
| 231 return name_; | 236 return name_; |
| 232 } | 237 } |
| 233 | 238 |
| 234 | 239 |
| 235 } } // namespace v8::internal | 240 } } // namespace v8::internal |
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