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_X64_CODE_STUBS_X64_H_
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#define V8_X64_CODE_STUBS_X64_H_
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#include "ic-inl.h"
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2010-08-30 11:48:07 +00:00
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#include "type-info.h"
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2010-08-25 09:44:44 +00:00
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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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explicit TranscendentalCacheStub(TranscendentalCache::Type type)
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: type_(type) {}
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void Generate(MacroAssembler* masm);
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private:
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TranscendentalCache::Type type_;
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Major MajorKey() { return TranscendentalCache; }
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int MinorKey() { return type_; }
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Runtime::FunctionId RuntimeFunction();
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void GenerateOperation(MacroAssembler* masm, Label* on_nan_result);
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};
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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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// Flag that indicates how to generate code for the stub GenericBinaryOpStub.
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enum GenericBinaryFlags {
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NO_GENERIC_BINARY_FLAGS = 0,
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NO_SMI_CODE_IN_STUB = 1 << 0 // Omit smi code in stub.
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};
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class GenericBinaryOpStub: public CodeStub {
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public:
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GenericBinaryOpStub(Token::Value op,
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OverwriteMode mode,
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GenericBinaryFlags flags,
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TypeInfo operands_type = TypeInfo::Unknown())
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: op_(op),
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mode_(mode),
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flags_(flags),
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args_in_registers_(false),
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args_reversed_(false),
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static_operands_type_(operands_type),
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runtime_operands_type_(BinaryOpIC::DEFAULT),
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name_(NULL) {
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ASSERT(OpBits::is_valid(Token::NUM_TOKENS));
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}
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2011-01-03 14:59:12 +00:00
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GenericBinaryOpStub(int key, BinaryOpIC::TypeInfo runtime_operands_type)
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: op_(OpBits::decode(key)),
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mode_(ModeBits::decode(key)),
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flags_(FlagBits::decode(key)),
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args_in_registers_(ArgsInRegistersBits::decode(key)),
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args_reversed_(ArgsReversedBits::decode(key)),
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static_operands_type_(TypeInfo::ExpandedRepresentation(
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StaticTypeInfoBits::decode(key))),
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2011-01-03 14:59:12 +00:00
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runtime_operands_type_(runtime_operands_type),
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2010-08-25 09:44:44 +00:00
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name_(NULL) {
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}
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// Generate code to call the stub with the supplied arguments. This will add
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// code at the call site to prepare arguments either in registers or on the
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// stack together with the actual call.
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void GenerateCall(MacroAssembler* masm, Register left, Register right);
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void GenerateCall(MacroAssembler* masm, Register left, Smi* right);
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void GenerateCall(MacroAssembler* masm, Smi* left, Register right);
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2010-08-25 11:10:05 +00:00
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bool ArgsInRegistersSupported() {
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return (op_ == Token::ADD) || (op_ == Token::SUB)
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|| (op_ == Token::MUL) || (op_ == Token::DIV);
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}
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2010-08-25 09:44:44 +00:00
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private:
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Token::Value op_;
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OverwriteMode mode_;
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GenericBinaryFlags flags_;
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bool args_in_registers_; // Arguments passed in registers not on the stack.
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bool args_reversed_; // Left and right argument are swapped.
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// Number type information of operands, determined by code generator.
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TypeInfo static_operands_type_;
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// Operand type information determined at runtime.
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BinaryOpIC::TypeInfo runtime_operands_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("GenericBinaryOpStub %d (op %s), "
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2011-01-05 12:28:47 +00:00
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"(mode %d, flags %d, registers %d, reversed %d, type_info %s)\n",
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2010-08-25 09:44:44 +00:00
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MinorKey(),
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Token::String(op_),
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static_cast<int>(mode_),
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static_cast<int>(flags_),
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static_cast<int>(args_in_registers_),
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static_cast<int>(args_reversed_),
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static_operands_type_.ToString());
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}
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#endif
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// Minor key encoding in 17 bits TTNNNFRAOOOOOOOMM.
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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 ArgsInRegistersBits: public BitField<bool, 9, 1> {};
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class ArgsReversedBits: public BitField<bool, 10, 1> {};
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class FlagBits: public BitField<GenericBinaryFlags, 11, 1> {};
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class StaticTypeInfoBits: public BitField<int, 12, 3> {};
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2010-12-07 11:31:57 +00:00
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class RuntimeTypeInfoBits: public BitField<BinaryOpIC::TypeInfo, 15, 3> {};
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2010-08-25 09:44:44 +00:00
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Major MajorKey() { return GenericBinaryOp; }
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int MinorKey() {
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// Encode the parameters in a unique 18 bit value.
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return OpBits::encode(op_)
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| ModeBits::encode(mode_)
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| FlagBits::encode(flags_)
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| ArgsInRegistersBits::encode(args_in_registers_)
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| ArgsReversedBits::encode(args_reversed_)
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| StaticTypeInfoBits::encode(
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static_operands_type_.ThreeBitRepresentation())
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| RuntimeTypeInfoBits::encode(runtime_operands_type_);
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}
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void Generate(MacroAssembler* masm);
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void GenerateSmiCode(MacroAssembler* masm, Label* slow);
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void GenerateLoadArguments(MacroAssembler* masm);
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void GenerateReturn(MacroAssembler* masm);
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void GenerateRegisterArgsPush(MacroAssembler* masm);
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void GenerateTypeTransition(MacroAssembler* masm);
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bool IsOperationCommutative() {
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return (op_ == Token::ADD) || (op_ == Token::MUL);
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}
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void SetArgsInRegisters() { args_in_registers_ = true; }
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void SetArgsReversed() { args_reversed_ = true; }
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bool HasSmiCodeInStub() { return (flags_ & NO_SMI_CODE_IN_STUB) == 0; }
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bool HasArgsInRegisters() { return args_in_registers_; }
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bool HasArgsReversed() { return args_reversed_; }
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bool ShouldGenerateSmiCode() {
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return HasSmiCodeInStub() &&
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runtime_operands_type_ != BinaryOpIC::HEAP_NUMBERS &&
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runtime_operands_type_ != BinaryOpIC::STRINGS;
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}
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bool ShouldGenerateFPCode() {
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return runtime_operands_type_ != BinaryOpIC::STRINGS;
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}
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virtual int GetCodeKind() { return Code::BINARY_OP_IC; }
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virtual InlineCacheState GetICState() {
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return BinaryOpIC::ToState(runtime_operands_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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2011-01-18 14:32:13 +00:00
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friend class LCodeGen;
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2010-08-25 09:44:44 +00:00
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};
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2011-01-05 12:28:47 +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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ASSERT(OpBits::is_valid(Token::NUM_TOKENS));
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}
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TypeRecordingBinaryOpStub(
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int key,
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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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operands_type_(operands_type),
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result_type_(result_type),
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name_(NULL) { }
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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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// 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 15 bits RRRTTTOOOOOOOMM.
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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 OperandTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 9, 3> {};
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class ResultTypeInfoBits: public BitField<TRBinaryOpIC::TypeInfo, 12, 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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| 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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2011-02-03 15:36:44 +00:00
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void GenerateFloatingPointCode(MacroAssembler* masm,
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Label* allocation_failure,
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Label* non_numeric_failure);
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void GenerateStringAddCode(MacroAssembler* masm);
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void GenerateCallRuntimeCode(MacroAssembler* masm);
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2011-01-05 12:28:47 +00:00
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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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void GenerateStringStub(MacroAssembler* masm);
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void GenerateGenericStub(MacroAssembler* masm);
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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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friend class CodeGenerator;
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};
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2010-08-25 09:44:44 +00:00
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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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bool ascii);
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// Generate code for copying characters using the rep movs instruction.
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// Copies rcx characters from rsi to rdi. 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 rdi.
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Register src, // Must be rsi.
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Register count, // Must be rcx.
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bool ascii);
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// Probe the symbol table for a two character string. If the string is
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// not found by probing a jump to the label not_found is performed. This jump
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// does not 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 register rax.
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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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Register scratch4,
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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,
|
|
|
|
Register scratch);
|
|
|
|
static void GenerateHashGetHash(MacroAssembler* masm,
|
|
|
|
Register hash,
|
|
|
|
Register scratch);
|
|
|
|
|
|
|
|
private:
|
|
|
|
DISALLOW_IMPLICIT_CONSTRUCTORS(StringHelper);
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// Flag that indicates how to generate code for the stub StringAddStub.
|
|
|
|
enum StringAddFlags {
|
|
|
|
NO_STRING_ADD_FLAGS = 0,
|
2011-02-22 12:26:31 +00:00
|
|
|
// Omit left string check in stub (left is definitely a string).
|
|
|
|
NO_STRING_CHECK_LEFT_IN_STUB = 1 << 0,
|
|
|
|
// Omit right string check in stub (right is definitely a string).
|
|
|
|
NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 1,
|
|
|
|
// Omit both string checks in stub.
|
|
|
|
NO_STRING_CHECK_IN_STUB =
|
|
|
|
NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB
|
2010-08-25 09:44:44 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class StringAddStub: public CodeStub {
|
|
|
|
public:
|
2011-02-22 12:26:31 +00:00
|
|
|
explicit StringAddStub(StringAddFlags flags) : flags_(flags) {}
|
2010-08-25 09:44:44 +00:00
|
|
|
|
|
|
|
private:
|
|
|
|
Major MajorKey() { return StringAdd; }
|
2011-02-22 12:26:31 +00:00
|
|
|
int MinorKey() { return flags_; }
|
2010-08-25 09:44:44 +00:00
|
|
|
|
|
|
|
void Generate(MacroAssembler* masm);
|
|
|
|
|
2011-02-22 12:26:31 +00:00
|
|
|
void GenerateConvertArgument(MacroAssembler* masm,
|
|
|
|
int stack_offset,
|
|
|
|
Register arg,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
Register scratch3,
|
|
|
|
Label* slow);
|
|
|
|
|
|
|
|
const StringAddFlags flags_;
|
2010-08-25 09:44:44 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class SubStringStub: public CodeStub {
|
|
|
|
public:
|
|
|
|
SubStringStub() {}
|
|
|
|
|
|
|
|
private:
|
|
|
|
Major MajorKey() { return SubString; }
|
|
|
|
int MinorKey() { return 0; }
|
|
|
|
|
|
|
|
void Generate(MacroAssembler* masm);
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class StringCompareStub: public CodeStub {
|
|
|
|
public:
|
|
|
|
explicit StringCompareStub() {}
|
|
|
|
|
|
|
|
// Compare two flat ascii strings and returns result in rax after popping two
|
|
|
|
// arguments from the stack.
|
|
|
|
static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
|
|
|
|
Register left,
|
|
|
|
Register right,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
Register scratch3,
|
|
|
|
Register scratch4);
|
|
|
|
|
|
|
|
private:
|
|
|
|
Major MajorKey() { return StringCompare; }
|
|
|
|
int MinorKey() { return 0; }
|
|
|
|
|
|
|
|
void Generate(MacroAssembler* masm);
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
class NumberToStringStub: public CodeStub {
|
|
|
|
public:
|
|
|
|
NumberToStringStub() { }
|
|
|
|
|
|
|
|
// Generate code to do a lookup in the number string cache. If the number in
|
|
|
|
// the register object is found in the cache the generated code falls through
|
|
|
|
// with the result in the result register. The object and the result register
|
|
|
|
// can be the same. If the number is not found in the cache the code jumps to
|
|
|
|
// the label not_found with only the content of register object unchanged.
|
|
|
|
static void GenerateLookupNumberStringCache(MacroAssembler* masm,
|
|
|
|
Register object,
|
|
|
|
Register result,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
bool object_is_smi,
|
|
|
|
Label* not_found);
|
|
|
|
|
|
|
|
private:
|
|
|
|
static void GenerateConvertHashCodeToIndex(MacroAssembler* masm,
|
|
|
|
Register hash,
|
|
|
|
Register mask);
|
|
|
|
|
|
|
|
Major MajorKey() { return NumberToString; }
|
|
|
|
int MinorKey() { return 0; }
|
|
|
|
|
|
|
|
void Generate(MacroAssembler* masm);
|
|
|
|
|
|
|
|
const char* GetName() { return "NumberToStringStub"; }
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
void Print() {
|
|
|
|
PrintF("NumberToStringStub\n");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
|
|
|
|
2011-02-14 21:21:33 +00:00
|
|
|
// Generate code to load an element from a pixel array. The receiver is assumed
|
|
|
|
// to not be a smi and to have elements, the caller must guarantee this
|
|
|
|
// precondition. If key is not a smi, then the generated code branches to
|
|
|
|
// key_not_smi. Callers can specify NULL for key_not_smi to signal that a smi
|
|
|
|
// check has already been performed on key so that the smi check is not
|
|
|
|
// generated. If key is not a valid index within the bounds of the pixel array,
|
|
|
|
// the generated code jumps to out_of_range. receiver, key and elements are
|
|
|
|
// unchanged throughout the generated code sequence.
|
2011-02-03 12:50:50 +00:00
|
|
|
void GenerateFastPixelArrayLoad(MacroAssembler* masm,
|
|
|
|
Register receiver,
|
|
|
|
Register key,
|
|
|
|
Register elements,
|
|
|
|
Register untagged_key,
|
|
|
|
Register result,
|
|
|
|
Label* not_pixel_array,
|
|
|
|
Label* key_not_smi,
|
|
|
|
Label* out_of_range);
|
|
|
|
|
2011-02-14 21:21:33 +00:00
|
|
|
// Generate code to store an element into a pixel array, clamping values between
|
|
|
|
// [0..255]. The receiver is assumed to not be a smi and to have elements, the
|
|
|
|
// caller must guarantee this precondition. If key is not a smi, then the
|
|
|
|
// generated code branches to key_not_smi. Callers can specify NULL for
|
|
|
|
// key_not_smi to signal that a smi check has already been performed on key so
|
|
|
|
// that the smi check is not generated. If the value is not a smi, the
|
|
|
|
// generated code will branch to value_not_smi. If the receiver
|
|
|
|
// doesn't have pixel array elements, the generated code will branch to
|
|
|
|
// not_pixel_array, unless not_pixel_array is NULL, in which case the caller
|
|
|
|
// must ensure that the receiver has pixel array elements. If key is not a
|
|
|
|
// valid index within the bounds of the pixel array, the generated code jumps to
|
|
|
|
// out_of_range.
|
|
|
|
void GenerateFastPixelArrayStore(MacroAssembler* masm,
|
|
|
|
Register receiver,
|
|
|
|
Register key,
|
|
|
|
Register value,
|
|
|
|
Register elements,
|
|
|
|
Register scratch1,
|
|
|
|
bool load_elements_from_receiver,
|
|
|
|
bool key_is_untagged,
|
|
|
|
Label* key_not_smi,
|
|
|
|
Label* value_not_smi,
|
|
|
|
Label* not_pixel_array,
|
|
|
|
Label* out_of_range);
|
2011-02-03 12:50:50 +00:00
|
|
|
|
2010-08-25 09:44:44 +00:00
|
|
|
} } // namespace v8::internal
|
|
|
|
|
|
|
|
#endif // V8_X64_CODE_STUBS_X64_H_
|