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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_IA32_CODEGEN_IA32_H_
     29 #define V8_IA32_CODEGEN_IA32_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 // -------------------------------------------------------------------------
     41 // CodeGenerator
     42 
     43 class CodeGenerator {
     44  public:
     45   // Printing of AST, etc. as requested by flags.
     46   static void MakeCodePrologue(CompilationInfo* info);
     47 
     48   // Allocate and install the code.
     49   static Handle<Code> MakeCodeEpilogue(MacroAssembler* masm,
     50                                        Code::Flags flags,
     51                                        CompilationInfo* info);
     52 
     53   // Print the code after compiling it.
     54   static void PrintCode(Handle<Code> code, CompilationInfo* info);
     55 
     56   static bool ShouldGenerateLog(Expression* type);
     57 
     58   static bool RecordPositions(MacroAssembler* masm,
     59                               int pos,
     60                               bool right_here = false);
     61 
     62 
     63   static Operand FixedArrayElementOperand(Register array,
     64                                           Register index_as_smi,
     65                                           int additional_offset = 0) {
     66     int offset = FixedArray::kHeaderSize + additional_offset * kPointerSize;
     67     return FieldOperand(array, index_as_smi, times_half_pointer_size, offset);
     68   }
     69 
     70  private:
     71   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
     72 };
     73 
     74 
     75 class StringCharLoadGenerator : public AllStatic {
     76  public:
     77   // Generates the code for handling different string types and loading the
     78   // indexed character into |result|.  We expect |index| as untagged input and
     79   // |result| as untagged output.
     80   static void Generate(MacroAssembler* masm,
     81                        Factory* factory,
     82                        Register string,
     83                        Register index,
     84                        Register result,
     85                        Label* call_runtime);
     86 
     87  private:
     88   DISALLOW_COPY_AND_ASSIGN(StringCharLoadGenerator);
     89 };
     90 
     91 } }  // namespace v8::internal
     92 
     93 #endif  // V8_IA32_CODEGEN_IA32_H_
     94