| // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #include "bootstrapper.h" |
| #include "code-stubs.h" |
| #include "factory.h" |
| #include "macro-assembler.h" |
| |
| namespace v8 { namespace internal { |
| |
| Handle<Code> CodeStub::GetCode() { |
| uint32_t key = GetKey(); |
| int index = Heap::code_stubs()->FindNumberEntry(key); |
| if (index == -1) { |
| HandleScope scope; |
| |
| // Update the static counter each time a new code stub is generated. |
| Counters::code_stubs.Increment(); |
| |
| // Generate the new code. |
| MacroAssembler masm(NULL, 256); |
| |
| // Nested stubs are not allowed for leafs. |
| masm.set_allow_stub_calls(AllowsStubCalls()); |
| |
| // Generate the code for the stub. |
| masm.set_generating_stub(true); |
| Generate(&masm); |
| |
| // Create the code object. |
| CodeDesc desc; |
| masm.GetCode(&desc); |
| |
| // Copy the generated code into a heap object, and store the major key. |
| Code::Flags flags = Code::ComputeFlags(Code::STUB); |
| Handle<Code> code = Factory::NewCode(desc, NULL, flags); |
| code->set_major_key(MajorKey()); |
| |
| // Add unresolved entries in the code to the fixup list. |
| Bootstrapper::AddFixup(*code, &masm); |
| |
| LOG(CodeCreateEvent("Stub", *code, GetName())); |
| Counters::total_stubs_code_size.Increment(code->instruction_size()); |
| |
| #ifdef DEBUG |
| if (FLAG_print_code_stubs) { |
| Print(); |
| code->Print(); |
| PrintF("\n"); |
| } |
| #endif |
| |
| // Update the dictionary and the root in Heap. |
| Handle<Dictionary> dict = |
| Factory::DictionaryAtNumberPut(Handle<Dictionary>(Heap::code_stubs()), |
| key, |
| code); |
| Heap::set_code_stubs(*dict); |
| index = Heap::code_stubs()->FindNumberEntry(key); |
| } |
| ASSERT(index != -1); |
| |
| return Handle<Code>(Code::cast(Heap::code_stubs()->ValueAt(index))); |
| } |
| |
| |
| const char* CodeStub::MajorName(CodeStub::Major major_key) { |
| switch (major_key) { |
| case CallFunction: |
| return "CallFunction"; |
| case GenericBinaryOp: |
| return "GenericBinaryOp"; |
| case SmiOp: |
| return "SmiOp"; |
| case Compare: |
| return "Compare"; |
| case RecordWrite: |
| return "RecordWrite"; |
| case StackCheck: |
| return "StackCheck"; |
| case UnarySub: |
| return "UnarySub"; |
| case RevertToNumber: |
| return "RevertToNumber"; |
| case ToBoolean: |
| return "ToBoolean"; |
| case Instanceof: |
| return "Instanceof"; |
| case CounterOp: |
| return "CounterOp"; |
| case ArgumentsAccess: |
| return "ArgumentsAccess"; |
| case Runtime: |
| return "Runtime"; |
| case CEntry: |
| return "CEntry"; |
| case JSEntry: |
| return "JSEntry"; |
| case GetProperty: |
| return "GetProperty"; |
| case SetProperty: |
| return "SetProperty"; |
| case InvokeBuiltin: |
| return "InvokeBuiltin"; |
| case JSExit: |
| return "JSExit"; |
| default: |
| UNREACHABLE(); |
| return NULL; |
| } |
| } |
| |
| |
| } } // namespace v8::internal |