2010-08-25 09:44:44 +00:00
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// Copyright 2010 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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#ifndef V8_IA32_CODE_STUBS_IA32_H_
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#define V8_IA32_CODE_STUBS_IA32_H_
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2010-08-30 11:48:07 +00:00
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#include "macro-assembler.h"
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#include "code-stubs.h"
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2010-08-25 09:44:44 +00:00
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#include "ic-inl.h"
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namespace v8 {
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namespace internal {
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// Compute a transcendental math function natively, or call the
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// TranscendentalCache runtime function.
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class TranscendentalCacheStub: public CodeStub {
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public:
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2010-12-20 13:52:14 +00:00
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enum ArgumentType {
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TAGGED = 0,
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UNTAGGED = 1 << TranscendentalCache::kTranscendentalTypeBits
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};
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2010-12-14 13:21:29 +00:00
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2011-03-02 14:40:38 +00:00
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TranscendentalCacheStub(TranscendentalCache::Type type,
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ArgumentType argument_type)
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2010-12-20 13:52:14 +00:00
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: type_(type), argument_type_(argument_type) {}
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2010-12-14 13:21:29 +00:00
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void Generate(MacroAssembler* masm);
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private:
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TranscendentalCache::Type type_;
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2010-12-20 13:52:14 +00:00
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ArgumentType argument_type_;
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2010-12-14 13:21:29 +00:00
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2010-12-20 13:52:14 +00:00
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Major MajorKey() { return TranscendentalCache; }
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int MinorKey() { return type_ | argument_type_; }
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2010-12-14 13:21:29 +00:00
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Runtime::FunctionId RuntimeFunction();
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void GenerateOperation(MacroAssembler* masm);
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};
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2010-08-25 09:44:44 +00:00
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class ToBooleanStub: public CodeStub {
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public:
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ToBooleanStub() { }
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void Generate(MacroAssembler* masm);
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private:
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Major MajorKey() { return ToBoolean; }
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int MinorKey() { return 0; }
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};
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2011-04-28 17:49:55 +00:00
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class TypeRecordingUnaryOpStub: public CodeStub {
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public:
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TypeRecordingUnaryOpStub(Token::Value op, UnaryOverwriteMode mode)
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: op_(op),
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mode_(mode),
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operand_type_(TRUnaryOpIC::UNINITIALIZED),
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name_(NULL) {
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}
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TypeRecordingUnaryOpStub(
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int key,
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TRUnaryOpIC::TypeInfo operand_type)
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: op_(OpBits::decode(key)),
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mode_(ModeBits::decode(key)),
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operand_type_(operand_type),
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name_(NULL) {
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}
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private:
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Token::Value op_;
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UnaryOverwriteMode mode_;
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// Operand type information determined at runtime.
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TRUnaryOpIC::TypeInfo operand_type_;
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char* name_;
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const char* GetName();
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#ifdef DEBUG
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void Print() {
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PrintF("TypeRecordingUnaryOpStub %d (op %s), "
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"(mode %d, runtime_type_info %s)\n",
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MinorKey(),
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Token::String(op_),
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static_cast<int>(mode_),
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TRUnaryOpIC::GetName(operand_type_));
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}
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#endif
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class ModeBits: public BitField<UnaryOverwriteMode, 0, 1> {};
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class OpBits: public BitField<Token::Value, 1, 7> {};
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class OperandTypeInfoBits: public BitField<TRUnaryOpIC::TypeInfo, 8, 3> {};
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Major MajorKey() { return TypeRecordingUnaryOp; }
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int MinorKey() {
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return ModeBits::encode(mode_)
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| OpBits::encode(op_)
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| OperandTypeInfoBits::encode(operand_type_);
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}
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// Note: A lot of the helper functions below will vanish when we use virtual
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// function instead of switch more often.
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void Generate(MacroAssembler* masm);
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void GenerateTypeTransition(MacroAssembler* masm);
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void GenerateSmiStub(MacroAssembler* masm);
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void GenerateSmiStubSub(MacroAssembler* masm);
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void GenerateSmiStubBitNot(MacroAssembler* masm);
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void GenerateSmiCodeSub(MacroAssembler* masm, NearLabel* non_smi, Label* undo,
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Label* slow);
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void GenerateSmiCodeBitNot(MacroAssembler* masm, NearLabel* non_smi);
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void GenerateSmiCodeUndo(MacroAssembler* masm);
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void GenerateHeapNumberStub(MacroAssembler* masm);
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void GenerateHeapNumberStubSub(MacroAssembler* masm);
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void GenerateHeapNumberStubBitNot(MacroAssembler* masm);
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void GenerateHeapNumberCodeSub(MacroAssembler* masm, Label* slow);
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void GenerateHeapNumberCodeBitNot(MacroAssembler* masm, Label* slow);
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void GenerateGenericStub(MacroAssembler* masm);
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void GenerateGenericStubSub(MacroAssembler* masm);
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void GenerateGenericStubBitNot(MacroAssembler* masm);
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void GenerateGenericCodeFallback(MacroAssembler* masm);
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virtual int GetCodeKind() { return Code::TYPE_RECORDING_UNARY_OP_IC; }
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virtual InlineCacheState GetICState() {
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return TRUnaryOpIC::ToState(operand_type_);
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}
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virtual void FinishCode(Code* code) {
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code->set_type_recording_unary_op_type(operand_type_);
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}
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};
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2010-12-07 11:31:57 +00:00
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class TypeRecordingBinaryOpStub: public CodeStub {
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public:
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TypeRecordingBinaryOpStub(Token::Value op, OverwriteMode mode)
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: op_(op),
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mode_(mode),
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operands_type_(TRBinaryOpIC::UNINITIALIZED),
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result_type_(TRBinaryOpIC::UNINITIALIZED),
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name_(NULL) {
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2011-03-31 16:17:37 +00:00
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use_sse3_ = CpuFeatures::IsSupported(SSE3);
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2010-12-07 11:31:57 +00:00
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ASSERT(OpBits::is_valid(Token::NUM_TOKENS));
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}
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2010-12-15 13:56:41 +00:00
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TypeRecordingBinaryOpStub(
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int key,
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2010-12-07 11:31:57 +00:00
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TRBinaryOpIC::TypeInfo operands_type,
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TRBinaryOpIC::TypeInfo result_type = TRBinaryOpIC::UNINITIALIZED)
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: op_(OpBits::decode(key)),
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mode_(ModeBits::decode(key)),
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use_sse3_(SSE3Bits::decode(key)),
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operands_type_(operands_type),
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result_type_(result_type),
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2010-12-15 13:56:41 +00:00
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name_(NULL) { }
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2010-12-07 11:31:57 +00:00
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private:
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enum SmiCodeGenerateHeapNumberResults {
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ALLOW_HEAPNUMBER_RESULTS,
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NO_HEAPNUMBER_RESULTS
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};
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Token::Value op_;
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OverwriteMode mode_;
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bool use_sse3_;
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// Operand type information determined at runtime.
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TRBinaryOpIC::TypeInfo operands_type_;
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TRBinaryOpIC::TypeInfo result_type_;
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char* name_;
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const char* GetName();
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#ifdef DEBUG
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void Print() {
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PrintF("TypeRecordingBinaryOpStub %d (op %s), "
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"(mode %d, runtime_type_info %s)\n",
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MinorKey(),
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Token::String(op_),
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static_cast<int>(mode_),
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TRBinaryOpIC::GetName(operands_type_));
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}
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#endif
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// Minor key encoding in 16 bits RRRTTTSOOOOOOOMM.
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class ModeBits: public BitField<OverwriteMode, 0, 2> {};
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class OpBits: public BitField<Token::Value, 2, 7> {};
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class SSE3Bits: public BitField<bool, 9, 1> {};
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class OperandTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 10, 3> {};
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class ResultTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 13, 3> {};
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Major MajorKey() { return TypeRecordingBinaryOp; }
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int MinorKey() {
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return OpBits::encode(op_)
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| ModeBits::encode(mode_)
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| SSE3Bits::encode(use_sse3_)
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| OperandTypeInfoBits::encode(operands_type_)
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| ResultTypeInfoBits::encode(result_type_);
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}
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void Generate(MacroAssembler* masm);
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void GenerateGeneric(MacroAssembler* masm);
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void GenerateSmiCode(MacroAssembler* masm,
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Label* slow,
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SmiCodeGenerateHeapNumberResults heapnumber_results);
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void GenerateLoadArguments(MacroAssembler* masm);
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void GenerateReturn(MacroAssembler* masm);
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void GenerateUninitializedStub(MacroAssembler* masm);
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void GenerateSmiStub(MacroAssembler* masm);
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void GenerateInt32Stub(MacroAssembler* masm);
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void GenerateHeapNumberStub(MacroAssembler* masm);
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2011-03-28 16:36:08 +00:00
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void GenerateOddballStub(MacroAssembler* masm);
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2010-12-07 11:31:57 +00:00
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void GenerateStringStub(MacroAssembler* masm);
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2011-04-15 06:39:36 +00:00
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void GenerateBothStringStub(MacroAssembler* masm);
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2010-12-07 11:31:57 +00:00
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void GenerateGenericStub(MacroAssembler* masm);
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2011-01-25 12:14:56 +00:00
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void GenerateAddStrings(MacroAssembler* masm);
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2010-12-07 11:31:57 +00:00
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void GenerateHeapResultAllocation(MacroAssembler* masm, Label* alloc_failure);
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void GenerateRegisterArgsPush(MacroAssembler* masm);
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void GenerateTypeTransition(MacroAssembler* masm);
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void GenerateTypeTransitionWithSavedArgs(MacroAssembler* masm);
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virtual int GetCodeKind() { return Code::TYPE_RECORDING_BINARY_OP_IC; }
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virtual InlineCacheState GetICState() {
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return TRBinaryOpIC::ToState(operands_type_);
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}
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virtual void FinishCode(Code* code) {
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code->set_type_recording_binary_op_type(operands_type_);
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code->set_type_recording_binary_op_result_type(result_type_);
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}
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2010-08-30 11:48:07 +00:00
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friend class CodeGenerator;
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2010-08-25 09:44:44 +00:00
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};
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class StringHelper : public AllStatic {
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public:
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// Generate code for copying characters using a simple loop. This should only
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// be used in places where the number of characters is small and the
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// additional setup and checking in GenerateCopyCharactersREP adds too much
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// overhead. Copying of overlapping regions is not supported.
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static void GenerateCopyCharacters(MacroAssembler* masm,
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Register dest,
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Register src,
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Register count,
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Register scratch,
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bool ascii);
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// Generate code for copying characters using the rep movs instruction.
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// Copies ecx characters from esi to edi. Copying of overlapping regions is
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// not supported.
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static void GenerateCopyCharactersREP(MacroAssembler* masm,
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Register dest, // Must be edi.
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Register src, // Must be esi.
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Register count, // Must be ecx.
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Register scratch, // Neither of above.
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bool ascii);
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2010-09-01 17:20:36 +00:00
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// Probe the symbol table for a two character string. If the string
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// requires non-standard hashing a jump to the label not_probed is
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// performed and registers c1 and c2 are preserved. In all other
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// cases they are clobbered. If the string is not found by probing a
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// jump to the label not_found is performed. This jump does not
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// guarantee that the string is not in the symbol table. If the
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// string is found the code falls through with the string in
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// register eax.
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2010-08-25 09:44:44 +00:00
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static void GenerateTwoCharacterSymbolTableProbe(MacroAssembler* masm,
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Register c1,
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Register c2,
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Register scratch1,
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Register scratch2,
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Register scratch3,
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2010-09-01 17:20:36 +00:00
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Label* not_probed,
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2010-08-25 09:44:44 +00:00
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Label* not_found);
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// Generate string hash.
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static void GenerateHashInit(MacroAssembler* masm,
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Register hash,
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Register character,
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Register scratch);
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static void GenerateHashAddCharacter(MacroAssembler* masm,
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Register hash,
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Register character,
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Register scratch);
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static void GenerateHashGetHash(MacroAssembler* masm,
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Register hash,
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Register scratch);
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
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};
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// Flag that indicates how to generate code for the stub StringAddStub.
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enum StringAddFlags {
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NO_STRING_ADD_FLAGS = 0,
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2010-09-03 12:10:44 +00:00
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// Omit left string check in stub (left is definitely a string).
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NO_STRING_CHECK_LEFT_IN_STUB = 1 << 0,
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// Omit right string check in stub (right is definitely a string).
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NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 1,
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// Omit both string checks in stub.
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NO_STRING_CHECK_IN_STUB =
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NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB
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2010-08-25 09:44:44 +00:00
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};
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class StringAddStub: public CodeStub {
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public:
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2010-09-03 12:10:44 +00:00
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explicit StringAddStub(StringAddFlags flags) : flags_(flags) {}
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2010-08-25 09:44:44 +00:00
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private:
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Major MajorKey() { return StringAdd; }
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2010-09-03 12:10:44 +00:00
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int MinorKey() { return flags_; }
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2010-08-25 09:44:44 +00:00
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void Generate(MacroAssembler* masm);
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2010-09-03 12:10:44 +00:00
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void GenerateConvertArgument(MacroAssembler* masm,
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int stack_offset,
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Register arg,
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Register scratch1,
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Register scratch2,
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Register scratch3,
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Label* slow);
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const StringAddFlags flags_;
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2010-08-25 09:44:44 +00:00
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};
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class SubStringStub: public CodeStub {
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public:
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SubStringStub() {}
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private:
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Major MajorKey() { return SubString; }
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int MinorKey() { return 0; }
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void Generate(MacroAssembler* masm);
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};
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class StringCompareStub: public CodeStub {
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public:
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2011-05-05 11:40:08 +00:00
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StringCompareStub() { }
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2010-08-25 09:44:44 +00:00
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2011-05-05 11:40:08 +00:00
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// Compares two flat ASCII strings and returns result in eax.
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2010-08-25 09:44:44 +00:00
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static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
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Register left,
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Register right,
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Register scratch1,
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Register scratch2,
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Register scratch3);
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2011-05-05 11:40:08 +00:00
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// Compares two flat ASCII strings for equality and returns result
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// in eax.
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static void GenerateFlatAsciiStringEquals(MacroAssembler* masm,
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Register left,
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Register right,
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Register scratch1,
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Register scratch2);
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2010-08-25 09:44:44 +00:00
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private:
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2011-05-06 14:19:51 +00:00
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virtual Major MajorKey() { return StringCompare; }
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virtual int MinorKey() { return 0; }
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virtual void Generate(MacroAssembler* masm);
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2010-08-25 09:44:44 +00:00
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2011-05-06 14:19:51 +00:00
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static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm,
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Register left,
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Register right,
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Register length,
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Register scratch,
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NearLabel* chars_not_equal);
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2010-08-25 09:44:44 +00:00
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};
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class NumberToStringStub: public CodeStub {
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public:
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NumberToStringStub() { }
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// Generate code to do a lookup in the number string cache. If the number in
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// the register object is found in the cache the generated code falls through
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// with the result in the result register. The object and the result register
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// can be the same. If the number is not found in the cache the code jumps to
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// the label not_found with only the content of register object unchanged.
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static void GenerateLookupNumberStringCache(MacroAssembler* masm,
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Register object,
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Register result,
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Register scratch1,
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Register scratch2,
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bool object_is_smi,
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Label* not_found);
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private:
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Major MajorKey() { return NumberToString; }
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int MinorKey() { return 0; }
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void Generate(MacroAssembler* masm);
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const char* GetName() { return "NumberToStringStub"; }
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|
#ifdef DEBUG
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void Print() {
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|
PrintF("NumberToStringStub\n");
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}
|
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#endif
|
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|
};
|
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|
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|
2011-05-05 12:30:57 +00:00
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|
class StringDictionaryLookupStub: public CodeStub {
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public:
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|
enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP };
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|
StringDictionaryLookupStub(Register dictionary,
|
|
|
|
Register result,
|
|
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|
Register index,
|
|
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|
LookupMode mode)
|
|
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|
: dictionary_(dictionary), result_(result), index_(index), mode_(mode) { }
|
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|
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|
void Generate(MacroAssembler* masm);
|
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|
static void GenerateNegativeLookup(MacroAssembler* masm,
|
|
|
|
Label* miss,
|
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|
Label* done,
|
|
|
|
Register properties,
|
|
|
|
String* name,
|
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|
Register r0);
|
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|
static void GeneratePositiveLookup(MacroAssembler* masm,
|
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|
|
Label* miss,
|
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|
Label* done,
|
|
|
|
Register elements,
|
|
|
|
Register name,
|
|
|
|
Register r0,
|
|
|
|
Register r1);
|
|
|
|
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|
|
|
private:
|
|
|
|
static const int kInlinedProbes = 4;
|
|
|
|
static const int kTotalProbes = 20;
|
|
|
|
|
|
|
|
static const int kCapacityOffset =
|
|
|
|
StringDictionary::kHeaderSize +
|
|
|
|
StringDictionary::kCapacityIndex * kPointerSize;
|
|
|
|
|
|
|
|
static const int kElementsStartOffset =
|
|
|
|
StringDictionary::kHeaderSize +
|
|
|
|
StringDictionary::kElementsStartIndex * kPointerSize;
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
void Print() {
|
|
|
|
PrintF("StringDictionaryLookupStub\n");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
Major MajorKey() { return StringDictionaryNegativeLookup; }
|
|
|
|
|
|
|
|
int MinorKey() {
|
|
|
|
return DictionaryBits::encode(dictionary_.code()) |
|
|
|
|
ResultBits::encode(result_.code()) |
|
|
|
|
IndexBits::encode(index_.code()) |
|
|
|
|
LookupModeBits::encode(mode_);
|
|
|
|
}
|
|
|
|
|
|
|
|
class DictionaryBits: public BitField<int, 0, 3> {};
|
|
|
|
class ResultBits: public BitField<int, 3, 3> {};
|
|
|
|
class IndexBits: public BitField<int, 6, 3> {};
|
|
|
|
class LookupModeBits: public BitField<LookupMode, 9, 1> {};
|
|
|
|
|
|
|
|
Register dictionary_;
|
|
|
|
Register result_;
|
|
|
|
Register index_;
|
|
|
|
LookupMode mode_;
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2010-08-25 09:44:44 +00:00
|
|
|
} } // namespace v8::internal
|
|
|
|
|
|
|
|
#endif // V8_IA32_CODE_STUBS_IA32_H_
|