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155 lines
5.2 KiB
155 lines
5.2 KiB
// 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_FAST_CODEGEN_IA32_H_
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#define V8_FAST_CODEGEN_IA32_H_
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#include "v8.h"
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#include "ast.h"
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#include "compiler.h"
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#include "list.h"
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namespace v8 {
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namespace internal {
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class FastCodeGenSyntaxChecker: public AstVisitor {
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public:
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explicit FastCodeGenSyntaxChecker()
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: info_(NULL), has_supported_syntax_(true) {
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}
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void Check(CompilationInfo* info);
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CompilationInfo* info() { return info_; }
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bool has_supported_syntax() { return has_supported_syntax_; }
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private:
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void VisitDeclarations(ZoneList<Declaration*>* decls);
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void VisitStatements(ZoneList<Statement*>* stmts);
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// AST node visit functions.
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#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
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AST_NODE_LIST(DECLARE_VISIT)
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#undef DECLARE_VISIT
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CompilationInfo* info_;
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bool has_supported_syntax_;
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DISALLOW_COPY_AND_ASSIGN(FastCodeGenSyntaxChecker);
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};
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class FastCodeGenerator: public AstVisitor {
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public:
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explicit FastCodeGenerator(MacroAssembler* masm)
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: masm_(masm), info_(NULL), destination_(no_reg), smi_bits_(0) {
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}
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static Handle<Code> MakeCode(CompilationInfo* info);
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void Generate(CompilationInfo* compilation_info);
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private:
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MacroAssembler* masm() { return masm_; }
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CompilationInfo* info() { return info_; }
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Register destination() { return destination_; }
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void set_destination(Register reg) { destination_ = reg; }
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FunctionLiteral* function() { return info_->function(); }
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Scope* scope() { return info_->scope(); }
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// Platform-specific fixed registers, all guaranteed distinct.
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Register accumulator0();
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Register accumulator1();
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Register scratch0();
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Register scratch1();
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Register receiver_reg();
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Register context_reg();
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Register other_accumulator(Register reg) {
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ASSERT(reg.is(accumulator0()) || reg.is(accumulator1()));
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return (reg.is(accumulator0())) ? accumulator1() : accumulator0();
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}
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// Flags are true if the respective register is statically known to hold a
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// smi. We do not track every register, only the accumulator registers.
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bool is_smi(Register reg) {
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ASSERT(!reg.is(no_reg));
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return (smi_bits_ & reg.bit()) != 0;
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}
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void set_as_smi(Register reg) {
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ASSERT(!reg.is(no_reg));
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smi_bits_ = smi_bits_ | reg.bit();
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}
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void clear_as_smi(Register reg) {
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ASSERT(!reg.is(no_reg));
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smi_bits_ = smi_bits_ & ~reg.bit();
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}
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// AST node visit functions.
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#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
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AST_NODE_LIST(DECLARE_VISIT)
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#undef DECLARE_VISIT
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// Emit code to load the receiver from the stack into receiver_reg.
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void EmitLoadReceiver();
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// Emit code to load a global variable directly from a global property
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// cell into the destination register.
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void EmitGlobalVariableLoad(Handle<Object> cell);
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// Emit a store to an own property of this. The stored value is expected
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// in accumulator0 and the receiver in receiver_reg. The receiver
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// register is preserved and the result (the stored value) is left in the
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// destination register.
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void EmitThisPropertyStore(Handle<String> name);
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// Emit a load from an own property of this. The receiver is expected in
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// receiver_reg. The receiver register is preserved and the result is
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// left in the destination register.
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void EmitThisPropertyLoad(Handle<String> name);
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// Emit a bitwise or operation. The left operand is in accumulator1 and
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// the right is in accumulator0. The result should be left in the
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// destination register.
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void EmitBitOr();
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MacroAssembler* masm_;
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CompilationInfo* info_;
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Register destination_;
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uint32_t smi_bits_;
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DISALLOW_COPY_AND_ASSIGN(FastCodeGenerator);
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};
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} } // namespace v8::internal
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#endif // V8_FAST_CODEGEN_IA32_H_
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