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diff --git a/V8Binding/v8/src/codegen.h b/V8Binding/v8/src/codegen.h
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-// Copyright 2006-2008 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_CODEGEN_H_
-#define V8_CODEGEN_H_
-
-#include "ast.h"
-#include "code-stubs.h"
-#include "runtime.h"
-
-// Include the declaration of the architecture defined class CodeGenerator.
-// The contract to the shared code is that the the CodeGenerator is a subclass
-// of Visitor and that the following methods are available publicly:
-// MakeCode
-// SetFunctionInfo
-// masm
-// frame
-// has_valid_frame
-// SetFrame
-// DeleteFrame
-// allocator
-// AddDeferred
-// in_spilled_code
-// set_in_spilled_code
-//
-// These methods are either used privately by the shared code or implemented as
-// shared code:
-// CodeGenerator
-// ~CodeGenerator
-// ProcessDeferred
-// GenCode
-// BuildBoilerplate
-// ComputeCallInitialize
-// ComputeCallInitializeInLoop
-// ProcessDeclarations
-// DeclareGlobals
-// FindInlineRuntimeLUT
-// CheckForInlineRuntimeCall
-// PatchInlineRuntimeEntry
-// CodeForFunctionPosition
-// CodeForReturnPosition
-// CodeForStatementPosition
-// CodeForSourcePosition
-
-
-// Mode to overwrite BinaryExpression values.
-enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT };
-
-// Types of uncatchable exceptions.
-enum UncatchableExceptionType { OUT_OF_MEMORY, TERMINATION };
-
-
-#if V8_TARGET_ARCH_IA32
-#include "ia32/codegen-ia32.h"
-#elif V8_TARGET_ARCH_X64
-#include "x64/codegen-x64.h"
-#elif V8_TARGET_ARCH_ARM
-#include "arm/codegen-arm.h"
-#else
-#error Unsupported target architecture.
-#endif
-
-#include "register-allocator.h"
-
-namespace v8 {
-namespace internal {
-
-
-// Code generation can be nested. Code generation scopes form a stack
-// of active code generators.
-class CodeGeneratorScope BASE_EMBEDDED {
- public:
- explicit CodeGeneratorScope(CodeGenerator* cgen) {
- previous_ = top_;
- top_ = cgen;
- }
-
- ~CodeGeneratorScope() {
- top_ = previous_;
- }
-
- static CodeGenerator* Current() {
- ASSERT(top_ != NULL);
- return top_;
- }
-
- private:
- static CodeGenerator* top_;
- CodeGenerator* previous_;
-};
-
-
-// Deferred code objects are small pieces of code that are compiled
-// out of line. They are used to defer the compilation of uncommon
-// paths thereby avoiding expensive jumps around uncommon code parts.
-class DeferredCode: public ZoneObject {
- public:
- DeferredCode();
- virtual ~DeferredCode() { }
-
- virtual void Generate() = 0;
-
- MacroAssembler* masm() { return masm_; }
-
- int statement_position() const { return statement_position_; }
- int position() const { return position_; }
-
- Label* entry_label() { return &entry_label_; }
- Label* exit_label() { return &exit_label_; }
-
-#ifdef DEBUG
- void set_comment(const char* comment) { comment_ = comment; }
- const char* comment() const { return comment_; }
-#else
- void set_comment(const char* comment) { }
- const char* comment() const { return ""; }
-#endif
-
- inline void Jump();
- inline void Branch(Condition cc);
- void BindExit() { masm_->bind(&exit_label_); }
-
- void SaveRegisters();
- void RestoreRegisters();
-
- protected:
- MacroAssembler* masm_;
-
- private:
- // Constants indicating special actions. They should not be multiples
- // of kPointerSize so they will not collide with valid offsets from
- // the frame pointer.
- static const int kIgnore = -1;
- static const int kPush = 1;
-
- // This flag is ored with a valid offset from the frame pointer, so
- // it should fit in the low zero bits of a valid offset.
- static const int kSyncedFlag = 2;
-
- int statement_position_;
- int position_;
-
- Label entry_label_;
- Label exit_label_;
-
- int registers_[RegisterAllocator::kNumRegisters];
-
-#ifdef DEBUG
- const char* comment_;
-#endif
- DISALLOW_COPY_AND_ASSIGN(DeferredCode);
-};
-
-
-// RuntimeStub models code stubs calling entry points in the Runtime class.
-class RuntimeStub : public CodeStub {
- public:
- explicit RuntimeStub(Runtime::FunctionId id, int num_arguments)
- : id_(id), num_arguments_(num_arguments) { }
-
- void Generate(MacroAssembler* masm);
-
- // Disassembler support. It is useful to be able to print the name
- // of the runtime function called through this stub.
- static const char* GetNameFromMinorKey(int minor_key) {
- return Runtime::FunctionForId(IdField::decode(minor_key))->stub_name;
- }
-
- private:
- Runtime::FunctionId id_;
- int num_arguments_;
-
- class ArgumentField: public BitField<int, 0, 16> {};
- class IdField: public BitField<Runtime::FunctionId, 16, kMinorBits - 16> {};
-
- Major MajorKey() { return Runtime; }
- int MinorKey() {
- return IdField::encode(id_) | ArgumentField::encode(num_arguments_);
- }
-
- const char* GetName();
-
-#ifdef DEBUG
- void Print() {
- PrintF("RuntimeStub (id %s)\n", Runtime::FunctionForId(id_)->name);
- }
-#endif
-};
-
-
-class StackCheckStub : public CodeStub {
- public:
- StackCheckStub() { }
-
- void Generate(MacroAssembler* masm);
-
- private:
-
- const char* GetName() { return "StackCheckStub"; }
-
- Major MajorKey() { return StackCheck; }
- int MinorKey() { return 0; }
-};
-
-
-class InstanceofStub: public CodeStub {
- public:
- InstanceofStub() { }
-
- void Generate(MacroAssembler* masm);
-
- private:
- Major MajorKey() { return Instanceof; }
- int MinorKey() { return 0; }
-};
-
-
-class UnarySubStub : public CodeStub {
- public:
- explicit UnarySubStub(bool overwrite)
- : overwrite_(overwrite) { }
-
- private:
- bool overwrite_;
- Major MajorKey() { return UnarySub; }
- int MinorKey() { return overwrite_ ? 1 : 0; }
- void Generate(MacroAssembler* masm);
-
- const char* GetName() { return "UnarySubStub"; }
-};
-
-
-class CompareStub: public CodeStub {
- public:
- CompareStub(Condition cc, bool strict) : cc_(cc), strict_(strict) { }
-
- void Generate(MacroAssembler* masm);
-
- private:
- Condition cc_;
- bool strict_;
-
- Major MajorKey() { return Compare; }
-
- int MinorKey();
-
- // Branch to the label if the given object isn't a symbol.
- void BranchIfNonSymbol(MacroAssembler* masm,
- Label* label,
- Register object,
- Register scratch);
-
-#ifdef DEBUG
- void Print() {
- PrintF("CompareStub (cc %d), (strict %s)\n",
- static_cast<int>(cc_),
- strict_ ? "true" : "false");
- }
-#endif
-};
-
-
-class CEntryStub : public CodeStub {
- public:
- explicit CEntryStub(int result_size) : result_size_(result_size) { }
-
- void Generate(MacroAssembler* masm) { GenerateBody(masm, false); }
-
- protected:
- void GenerateBody(MacroAssembler* masm, bool is_debug_break);
- void GenerateCore(MacroAssembler* masm,
- Label* throw_normal_exception,
- Label* throw_termination_exception,
- Label* throw_out_of_memory_exception,
- StackFrame::Type frame_type,
- bool do_gc,
- bool always_allocate_scope);
- void GenerateThrowTOS(MacroAssembler* masm);
- void GenerateThrowUncatchable(MacroAssembler* masm,
- UncatchableExceptionType type);
- private:
- // Number of pointers/values returned.
- int result_size_;
-
- Major MajorKey() { return CEntry; }
- // Minor key must differ if different result_size_ values means different
- // code is generated.
- int MinorKey();
-
- const char* GetName() { return "CEntryStub"; }
-};
-
-
-class CEntryDebugBreakStub : public CEntryStub {
- public:
- CEntryDebugBreakStub() : CEntryStub(1) { }
-
- void Generate(MacroAssembler* masm) { GenerateBody(masm, true); }
-
- private:
- int MinorKey() { return 1; }
-
- const char* GetName() { return "CEntryDebugBreakStub"; }
-};
-
-
-class JSEntryStub : public CodeStub {
- public:
- JSEntryStub() { }
-
- void Generate(MacroAssembler* masm) { GenerateBody(masm, false); }
-
- protected:
- void GenerateBody(MacroAssembler* masm, bool is_construct);
-
- private:
- Major MajorKey() { return JSEntry; }
- int MinorKey() { return 0; }
-
- const char* GetName() { return "JSEntryStub"; }
-};
-
-
-class JSConstructEntryStub : public JSEntryStub {
- public:
- JSConstructEntryStub() { }
-
- void Generate(MacroAssembler* masm) { GenerateBody(masm, true); }
-
- private:
- int MinorKey() { return 1; }
-
- const char* GetName() { return "JSConstructEntryStub"; }
-};
-
-
-class ArgumentsAccessStub: public CodeStub {
- public:
- enum Type {
- READ_LENGTH,
- READ_ELEMENT,
- NEW_OBJECT
- };
-
- explicit ArgumentsAccessStub(Type type) : type_(type) { }
-
- private:
- Type type_;
-
- Major MajorKey() { return ArgumentsAccess; }
- int MinorKey() { return type_; }
-
- void Generate(MacroAssembler* masm);
- void GenerateReadLength(MacroAssembler* masm);
- void GenerateReadElement(MacroAssembler* masm);
- void GenerateNewObject(MacroAssembler* masm);
-
- const char* GetName() { return "ArgumentsAccessStub"; }
-
-#ifdef DEBUG
- void Print() {
- PrintF("ArgumentsAccessStub (type %d)\n", type_);
- }
-#endif
-};
-
-
-} // namespace internal
-} // namespace v8
-
-#endif // V8_CODEGEN_H_
generated by cgit v1.1 at 2025-06-01 01:03:28 +0000