2009-05-04 07:16:10 +00:00
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// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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2009-05-20 13:20:02 +00:00
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#include "v8.h"
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#include "macro-assembler.h"
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#include "register-allocator-inl.h"
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#include "codegen.h"
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2009-05-25 10:05:56 +00:00
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namespace v8 {
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namespace internal {
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2009-05-20 13:20:02 +00:00
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CodeGenerator::CodeGenerator(int buffer_size,
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Handle<Script> script,
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bool is_eval)
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: is_eval_(is_eval),
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script_(script),
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deferred_(8),
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masm_(new MacroAssembler(NULL, buffer_size)),
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scope_(NULL),
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frame_(NULL),
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allocator_(NULL),
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state_(NULL),
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loop_nesting_(0),
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function_return_is_shadowed_(false),
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in_spilled_code_(false) {
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}
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2009-06-04 11:54:14 +00:00
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#define __ masm->
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2009-05-20 13:20:02 +00:00
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void CodeGenerator::DeclareGlobals(Handle<FixedArray> a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::GenCode(FunctionLiteral* a) {
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masm_->int3(); // UNIMPLEMENTED
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}
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void CodeGenerator::GenerateFastCaseSwitchJumpTable(SwitchStatement* a,
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int b,
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int c,
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Label* d,
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Vector<Label*> e,
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Vector<Label> f) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitStatements(ZoneList<Statement*>* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitBlock(Block* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitDeclaration(Declaration* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitExpressionStatement(ExpressionStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitEmptyStatement(EmptyStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitIfStatement(IfStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitContinueStatement(ContinueStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitBreakStatement(BreakStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitReturnStatement(ReturnStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitWithEnterStatement(WithEnterStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitWithExitStatement(WithExitStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitSwitchStatement(SwitchStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitLoopStatement(LoopStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitForInStatement(ForInStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitTryCatch(TryCatch* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitTryFinally(TryFinally* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitDebuggerStatement(DebuggerStatement* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitFunctionLiteral(FunctionLiteral* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitFunctionBoilerplateLiteral(
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FunctionBoilerplateLiteral* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitConditional(Conditional* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitSlot(Slot* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitVariableProxy(VariableProxy* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitLiteral(Literal* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitRegExpLiteral(RegExpLiteral* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitObjectLiteral(ObjectLiteral* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitArrayLiteral(ArrayLiteral* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCatchExtensionObject(CatchExtensionObject* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitAssignment(Assignment* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitThrow(Throw* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitProperty(Property* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCall(Call* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCallEval(CallEval* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCallNew(CallNew* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCallRuntime(CallRuntime* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitUnaryOperation(UnaryOperation* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCountOperation(CountOperation* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitBinaryOperation(BinaryOperation* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitCompareOperation(CompareOperation* a) {
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UNIMPLEMENTED();
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}
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void CodeGenerator::VisitThisFunction(ThisFunction* a) {
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UNIMPLEMENTED();
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}
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void CEntryStub::GenerateBody(MacroAssembler* masm, bool is_debug_break) {
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masm->int3(); // TODO(X64): UNIMPLEMENTED.
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}
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2009-06-04 11:54:14 +00:00
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void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) {
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Label invoke, exit;
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// Setup frame.
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__ push(rbp);
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__ movq(rbp, rsp);
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// Save callee-saved registers (X64 calling conventions).
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int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY;
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// Push something that is not an arguments adaptor.
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__ push(Immediate(ArgumentsAdaptorFrame::NON_SENTINEL));
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__ push(Immediate(Smi::FromInt(marker))); // @ function offset
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__ push(r12);
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__ push(r13);
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__ push(r14);
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__ push(r15);
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__ push(rdi);
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__ push(rsi);
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__ push(rbx);
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// TODO(X64): Push XMM6-XMM15 (low 64 bits) as well, or make them
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// callee-save in JS code as well.
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// Save copies of the top frame descriptor on the stack.
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ExternalReference c_entry_fp(Top::k_c_entry_fp_address);
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__ load_rax(c_entry_fp);
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__ push(rax);
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// Call a faked try-block that does the invoke.
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__ call(&invoke);
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// Caught exception: Store result (exception) in the pending
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// exception field in the JSEnv and return a failure sentinel.
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ExternalReference pending_exception(Top::k_pending_exception_address);
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__ store_rax(pending_exception);
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__ movq(rax, Failure::Exception(), RelocInfo::NONE);
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__ jmp(&exit);
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// Invoke: Link this frame into the handler chain.
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__ bind(&invoke);
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__ PushTryHandler(IN_JS_ENTRY, JS_ENTRY_HANDLER);
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__ push(rax); // flush TOS
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// Clear any pending exceptions.
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__ load_rax(ExternalReference::the_hole_value_location());
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__ store_rax(pending_exception);
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// Fake a receiver (NULL).
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__ push(Immediate(0)); // receiver
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// Invoke the function by calling through JS entry trampoline
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// builtin and pop the faked function when we return. We load the address
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// from an external reference instead of inlining the call target address
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// directly in the code, because the builtin stubs may not have been
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// generated yet at the time this code is generated.
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if (is_construct) {
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ExternalReference construct_entry(Builtins::JSConstructEntryTrampoline);
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__ load_rax(construct_entry);
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} else {
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ExternalReference entry(Builtins::JSEntryTrampoline);
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__ load_rax(entry);
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}
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__ call(FieldOperand(rax, Code::kHeaderSize));
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// Unlink this frame from the handler chain.
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__ movq(kScratchRegister, ExternalReference(Top::k_handler_address));
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__ pop(Operand(kScratchRegister, 0));
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// Pop next_sp.
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__ add(rsp, Immediate(StackHandlerConstants::kSize - kPointerSize));
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// Restore the top frame descriptor from the stack.
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__ bind(&exit);
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__ movq(kScratchRegister, ExternalReference(Top::k_c_entry_fp_address));
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__ pop(Operand(kScratchRegister, 0));
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// Restore callee-saved registers (X64 conventions).
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__ pop(rbx);
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__ pop(rsi);
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__ pop(rdi);
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__ pop(r15);
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__ pop(r14);
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__ pop(r13);
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__ pop(r12);
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__ add(rsp, Immediate(2 * kPointerSize)); // remove markers
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// Restore frame pointer and return.
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__ pop(rbp);
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__ ret(0);
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}
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#undef __
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2009-05-20 13:20:02 +00:00
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} } // namespace v8::internal
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