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// 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, masm.CodeObject());
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 ENABLE_DISASSEMBLER
if (FLAG_print_code_stubs) {
#ifdef DEBUG
Print();
#endif
code->Disassemble(GetName());
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
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