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      1 // Copyright 2011 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #ifndef V8_X64_CODEGEN_X64_H_
     29 #define V8_X64_CODEGEN_X64_H_
     30 
     31 #include "ast.h"
     32 #include "ic-inl.h"
     33 
     34 namespace v8 {
     35 namespace internal {
     36 
     37 // Forward declarations
     38 class CompilationInfo;
     39 
     40 enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
     41 
     42 
     43 // -------------------------------------------------------------------------
     44 // CodeGenerator
     45 
     46 class CodeGenerator: public AstVisitor {
     47  public:
     48   static bool MakeCode(CompilationInfo* info);
     49 
     50   // Printing of AST, etc. as requested by flags.
     51   static void MakeCodePrologue(CompilationInfo* info);
     52 
     53   // Allocate and install the code.
     54   static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,
     55                                        Code::Flags flags,
     56                                        CompilationInfo* info);
     57 
     58   // Print the code after compiling it.
     59   static void PrintCode(Handle<Code> code, CompilationInfo* info);
     60 
     61   static bool ShouldGenerateLog(Expression* type);
     62 
     63   static bool RecordPositions(MacroAssembler* masm,
     64                               int pos,
     65                               bool right_here = false);
     66 
     67  private:
     68   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
     69 };
     70 
     71 
     72 class StringCharLoadGenerator : public AllStatic {
     73  public:
     74   // Generates the code for handling different string types and loading the
     75   // indexed character into |result|.  We expect |index| as untagged input and
     76   // |result| as untagged output.
     77   static void Generate(MacroAssembler* masm,
     78                        Register string,
     79                        Register index,
     80                        Register result,
     81                        Label* call_runtime);
     82 
     83  private:
     84   DISALLOW_COPY_AND_ASSIGN(StringCharLoadGenerator);
     85 };
     86 
     87 } }  // namespace v8::internal
     88 
     89 #endif  // V8_X64_CODEGEN_X64_H_
     90