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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 |
| (...skipping 19 matching lines...) Expand all Loading... |
| 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 int index = HEAP->code_stubs()->FindEntry(GetKey()); |
| 41 if (index != NumberDictionary::kNotFound) { | 41 if (index != NumberDictionary::kNotFound) { |
| 42 *code_out = Code::cast(Heap::code_stubs()->ValueAt(index)); | 42 *code_out = Code::cast(HEAP->code_stubs()->ValueAt(index)); |
| 43 return true; | 43 return true; |
| 44 } | 44 } |
| 45 return false; | 45 return false; |
| 46 } | 46 } |
| 47 | 47 |
| 48 | 48 |
| 49 void CodeStub::GenerateCode(MacroAssembler* masm) { | 49 void CodeStub::GenerateCode(MacroAssembler* masm) { |
| 50 // Update the static counter each time a new code stub is generated. | 50 // Update the static counter each time a new code stub is generated. |
| 51 Counters::code_stubs.Increment(); | 51 COUNTERS->code_stubs()->Increment(); |
| 52 | 52 |
| 53 // Nested stubs are not allowed for leafs. | 53 // Nested stubs are not allowed for leafs. |
| 54 AllowStubCallsScope allow_scope(masm, AllowsStubCalls()); | 54 AllowStubCallsScope allow_scope(masm, AllowsStubCalls()); |
| 55 | 55 |
| 56 // Generate the code for the stub. | 56 // Generate the code for the stub. |
| 57 masm->set_generating_stub(true); | 57 masm->set_generating_stub(true); |
| 58 Generate(masm); | 58 Generate(masm); |
| 59 } | 59 } |
| 60 | 60 |
| 61 | 61 |
| 62 void CodeStub::RecordCodeGeneration(Code* code, MacroAssembler* masm) { | 62 void CodeStub::RecordCodeGeneration(Code* code, MacroAssembler* masm) { |
| 63 code->set_major_key(MajorKey()); | 63 code->set_major_key(MajorKey()); |
| 64 | 64 |
| 65 PROFILE(CodeCreateEvent(Logger::STUB_TAG, code, GetName())); | 65 PROFILE(ISOLATE, CodeCreateEvent(Logger::STUB_TAG, code, GetName())); |
| 66 GDBJIT(AddCode(GDBJITInterface::STUB, GetName(), code)); | 66 GDBJIT(AddCode(GDBJITInterface::STUB, GetName(), code)); |
| 67 Counters::total_stubs_code_size.Increment(code->instruction_size()); | 67 COUNTERS->total_stubs_code_size()->Increment(code->instruction_size()); |
| 68 | 68 |
| 69 #ifdef ENABLE_DISASSEMBLER | 69 #ifdef ENABLE_DISASSEMBLER |
| 70 if (FLAG_print_code_stubs) { | 70 if (FLAG_print_code_stubs) { |
| 71 #ifdef DEBUG | 71 #ifdef DEBUG |
| 72 Print(); | 72 Print(); |
| 73 #endif | 73 #endif |
| 74 code->Disassemble(GetName()); | 74 code->Disassemble(GetName()); |
| 75 PrintF("\n"); | 75 PrintF("\n"); |
| 76 } | 76 } |
| 77 #endif | 77 #endif |
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| 94 | 94 |
| 95 // Create the code object. | 95 // Create the code object. |
| 96 CodeDesc desc; | 96 CodeDesc desc; |
| 97 masm.GetCode(&desc); | 97 masm.GetCode(&desc); |
| 98 | 98 |
| 99 // Copy the generated code into a heap object. | 99 // Copy the generated code into a heap object. |
| 100 Code::Flags flags = Code::ComputeFlags( | 100 Code::Flags flags = Code::ComputeFlags( |
| 101 static_cast<Code::Kind>(GetCodeKind()), | 101 static_cast<Code::Kind>(GetCodeKind()), |
| 102 InLoop(), | 102 InLoop(), |
| 103 GetICState()); | 103 GetICState()); |
| 104 Handle<Code> new_object = Factory::NewCode( | 104 Handle<Code> new_object = FACTORY->NewCode( |
| 105 desc, flags, masm.CodeObject(), NeedsImmovableCode()); | 105 desc, flags, masm.CodeObject(), NeedsImmovableCode()); |
| 106 RecordCodeGeneration(*new_object, &masm); | 106 RecordCodeGeneration(*new_object, &masm); |
| 107 FinishCode(*new_object); | 107 FinishCode(*new_object); |
| 108 | 108 |
| 109 // Update the dictionary and the root in Heap. | 109 // Update the dictionary and the root in Heap. |
| 110 Handle<NumberDictionary> dict = | 110 Handle<NumberDictionary> dict = |
| 111 Factory::DictionaryAtNumberPut( | 111 FACTORY->DictionaryAtNumberPut( |
| 112 Handle<NumberDictionary>(Heap::code_stubs()), | 112 Handle<NumberDictionary>(HEAP->code_stubs()), |
| 113 GetKey(), | 113 GetKey(), |
| 114 new_object); | 114 new_object); |
| 115 Heap::public_set_code_stubs(*dict); | 115 HEAP->public_set_code_stubs(*dict); |
| 116 | 116 |
| 117 code = *new_object; | 117 code = *new_object; |
| 118 } | 118 } |
| 119 | 119 |
| 120 ASSERT(!NeedsImmovableCode() || Heap::lo_space()->Contains(code)); | 120 ASSERT(!NeedsImmovableCode() || HEAP->lo_space()->Contains(code)); |
| 121 return Handle<Code>(code); | 121 return Handle<Code>(code); |
| 122 } | 122 } |
| 123 | 123 |
| 124 | 124 |
| 125 MaybeObject* CodeStub::TryGetCode() { | 125 MaybeObject* CodeStub::TryGetCode() { |
| 126 Code* code; | 126 Code* code; |
| 127 if (!FindCodeInCache(&code)) { | 127 if (!FindCodeInCache(&code)) { |
| 128 // Generate the new code. | 128 // Generate the new code. |
| 129 MacroAssembler masm(NULL, 256); | 129 MacroAssembler masm(NULL, 256); |
| 130 GenerateCode(&masm); | 130 GenerateCode(&masm); |
| 131 | 131 |
| 132 // Create the code object. | 132 // Create the code object. |
| 133 CodeDesc desc; | 133 CodeDesc desc; |
| 134 masm.GetCode(&desc); | 134 masm.GetCode(&desc); |
| 135 | 135 |
| 136 // Try to copy the generated code into a heap object. | 136 // Try to copy the generated code into a heap object. |
| 137 Code::Flags flags = Code::ComputeFlags( | 137 Code::Flags flags = Code::ComputeFlags( |
| 138 static_cast<Code::Kind>(GetCodeKind()), | 138 static_cast<Code::Kind>(GetCodeKind()), |
| 139 InLoop(), | 139 InLoop(), |
| 140 GetICState()); | 140 GetICState()); |
| 141 Object* new_object; | 141 Object* new_object; |
| 142 { MaybeObject* maybe_new_object = | 142 { MaybeObject* maybe_new_object = |
| 143 Heap::CreateCode(desc, flags, masm.CodeObject()); | 143 HEAP->CreateCode(desc, flags, masm.CodeObject()); |
| 144 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; | 144 if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object; |
| 145 } | 145 } |
| 146 code = Code::cast(new_object); | 146 code = Code::cast(new_object); |
| 147 RecordCodeGeneration(code, &masm); | 147 RecordCodeGeneration(code, &masm); |
| 148 FinishCode(code); | 148 FinishCode(code); |
| 149 | 149 |
| 150 // Try to update the code cache but do not fail if unable. | 150 // Try to update the code cache but do not fail if unable. |
| 151 MaybeObject* maybe_new_object = | 151 MaybeObject* maybe_new_object = |
| 152 Heap::code_stubs()->AtNumberPut(GetKey(), code); | 152 HEAP->code_stubs()->AtNumberPut(GetKey(), code); |
| 153 if (maybe_new_object->ToObject(&new_object)) { | 153 if (maybe_new_object->ToObject(&new_object)) { |
| 154 Heap::public_set_code_stubs(NumberDictionary::cast(new_object)); | 154 HEAP->public_set_code_stubs(NumberDictionary::cast(new_object)); |
| 155 } | 155 } |
| 156 } | 156 } |
| 157 | 157 |
| 158 return code; | 158 return code; |
| 159 } | 159 } |
| 160 | 160 |
| 161 | 161 |
| 162 const char* CodeStub::MajorName(CodeStub::Major major_key, | 162 const char* CodeStub::MajorName(CodeStub::Major major_key, |
| 163 bool allow_unknown_keys) { | 163 bool allow_unknown_keys) { |
| 164 switch (major_key) { | 164 switch (major_key) { |
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| 195 break; | 195 break; |
| 196 default: | 196 default: |
| 197 UNREACHABLE(); | 197 UNREACHABLE(); |
| 198 } | 198 } |
| 199 } | 199 } |
| 200 | 200 |
| 201 | 201 |
| 202 const char* InstanceofStub::GetName() { | 202 const char* InstanceofStub::GetName() { |
| 203 if (name_ != NULL) return name_; | 203 if (name_ != NULL) return name_; |
| 204 const int kMaxNameLength = 100; | 204 const int kMaxNameLength = 100; |
| 205 name_ = Bootstrapper::AllocateAutoDeletedArray(kMaxNameLength); | 205 name_ = Isolate::Current()->bootstrapper()->AllocateAutoDeletedArray( |
| 206 kMaxNameLength); |
| 206 if (name_ == NULL) return "OOM"; | 207 if (name_ == NULL) return "OOM"; |
| 207 | 208 |
| 208 const char* args = ""; | 209 const char* args = ""; |
| 209 if (HasArgsInRegisters()) { | 210 if (HasArgsInRegisters()) { |
| 210 args = "_REGS"; | 211 args = "_REGS"; |
| 211 } | 212 } |
| 212 | 213 |
| 213 const char* inline_check = ""; | 214 const char* inline_check = ""; |
| 214 if (HasCallSiteInlineCheck()) { | 215 if (HasCallSiteInlineCheck()) { |
| 215 inline_check = "_INLINE"; | 216 inline_check = "_INLINE"; |
| 216 } | 217 } |
| 217 | 218 |
| 218 const char* return_true_false_object = ""; | 219 const char* return_true_false_object = ""; |
| 219 if (ReturnTrueFalseObject()) { | 220 if (ReturnTrueFalseObject()) { |
| 220 return_true_false_object = "_TRUEFALSE"; | 221 return_true_false_object = "_TRUEFALSE"; |
| 221 } | 222 } |
| 222 | 223 |
| 223 OS::SNPrintF(Vector<char>(name_, kMaxNameLength), | 224 OS::SNPrintF(Vector<char>(name_, kMaxNameLength), |
| 224 "InstanceofStub%s%s%s", | 225 "InstanceofStub%s%s%s", |
| 225 args, | 226 args, |
| 226 inline_check, | 227 inline_check, |
| 227 return_true_false_object); | 228 return_true_false_object); |
| 228 return name_; | 229 return name_; |
| 229 } | 230 } |
| 230 | 231 |
| 231 | 232 |
| 232 } } // namespace v8::internal | 233 } } // namespace v8::internal |
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