src/x64/codegen-x64.h

   1 // Copyright 2011 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef V8_X64_CODEGEN_X64_H_
   6 #define V8_X64_CODEGEN_X64_H_
   7
   8 #include "src/ast.h"
   9 #include "src/macro-assembler.h"
  10
  11 namespace v8 {
  12 namespace internal {
  13
  14
  15 enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
  16
  17
  18 class StringCharLoadGenerator : public AllStatic {
  19  public:
  20   // Generates the code for handling different string types and loading the
  21   // indexed character into |result|.  We expect |index| as untagged input and
  22   // |result| as untagged output.
  23   static void Generate(MacroAssembler* masm,
  24                        Register string,
  25                        Register index,
  26                        Register result,
  27                        Label* call_runtime);
  28
  29  private:
  30   DISALLOW_COPY_AND_ASSIGN(StringCharLoadGenerator);
  31 };
  32
  33
  34 class MathExpGenerator : public AllStatic {
  35  public:
  36   static void EmitMathExp(MacroAssembler* masm,
  37                           XMMRegister input,
  38                           XMMRegister result,
  39                           XMMRegister double_scratch,
  40                           Register temp1,
  41                           Register temp2);
  42
  43  private:
  44   DISALLOW_COPY_AND_ASSIGN(MathExpGenerator);
  45 };
  46
  47
  48 enum StackArgumentsAccessorReceiverMode {
  49   ARGUMENTS_CONTAIN_RECEIVER,
  50   ARGUMENTS_DONT_CONTAIN_RECEIVER
  51 };
  52
  53
  54 class StackArgumentsAccessor BASE_EMBEDDED {
  55  public:
  56   StackArgumentsAccessor(
  57       Register base_reg,
  58       int argument_count_immediate,
  59       StackArgumentsAccessorReceiverMode receiver_mode =
  60           ARGUMENTS_CONTAIN_RECEIVER,
  61       int extra_displacement_to_last_argument = 0)
  62       : base_reg_(base_reg),
  63         argument_count_reg_(no_reg),
  64         argument_count_immediate_(argument_count_immediate),
  65         receiver_mode_(receiver_mode),
  66         extra_displacement_to_last_argument_(
  67             extra_displacement_to_last_argument) { }
  68
  69   StackArgumentsAccessor(
  70       Register base_reg,
  71       Register argument_count_reg,
  72       StackArgumentsAccessorReceiverMode receiver_mode =
  73           ARGUMENTS_CONTAIN_RECEIVER,
  74       int extra_displacement_to_last_argument = 0)
  75       : base_reg_(base_reg),
  76         argument_count_reg_(argument_count_reg),
  77         argument_count_immediate_(0),
  78         receiver_mode_(receiver_mode),
  79         extra_displacement_to_last_argument_(
  80             extra_displacement_to_last_argument) { }
  81
  82   StackArgumentsAccessor(
  83       Register base_reg,
  84       const ParameterCount& parameter_count,
  85       StackArgumentsAccessorReceiverMode receiver_mode =
  86           ARGUMENTS_CONTAIN_RECEIVER,
  87       int extra_displacement_to_last_argument = 0)
  88       : base_reg_(base_reg),
  89         argument_count_reg_(parameter_count.is_reg() ?
  90                             parameter_count.reg() : no_reg),
  91         argument_count_immediate_(parameter_count.is_immediate() ?
  92                                   parameter_count.immediate() : 0),
  93         receiver_mode_(receiver_mode),
  94         extra_displacement_to_last_argument_(
  95             extra_displacement_to_last_argument) { }
  96
  97   Operand GetArgumentOperand(int index);
  98   Operand GetReceiverOperand() {
  99     DCHECK(receiver_mode_ == ARGUMENTS_CONTAIN_RECEIVER);
 100     return GetArgumentOperand(0);
 101   }
 102
 103  private:
 104   const Register base_reg_;
 105   const Register argument_count_reg_;
 106   const int argument_count_immediate_;
 107   const StackArgumentsAccessorReceiverMode receiver_mode_;
 108   const int extra_displacement_to_last_argument_;
 109
 110   DISALLOW_IMPLICIT_CONSTRUCTORS(StackArgumentsAccessor);
 111 };
 112
 113
 114 } }  // namespace v8::internal
 115
 116 #endif  // V8_X64_CODEGEN_X64_H_