Move regexp implementation into its own folder.

src/x64/regexp-macro-assembler-x64.h

Index: src/x64/regexp-macro-assembler-x64.h
diff --git a/src/x64/regexp-macro-assembler-x64.h b/src/x64/regexp-macro-assembler-x64.h
deleted file mode 100644
index b2492f101166cd614894acf0ffd526f93a00b972..0000000000000000000000000000000000000000
--- a/src/x64/regexp-macro-assembler-x64.h
+++ /dev/null
@@ -1,281 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_X64_REGEXP_MACRO_ASSEMBLER_X64_H_
-#define V8_X64_REGEXP_MACRO_ASSEMBLER_X64_H_
-
-#include "src/macro-assembler.h"
-#include "src/x64/assembler-x64.h"
-#include "src/x64/macro-assembler-x64.h"
-
-namespace v8 {
-namespace internal {
-
-#ifndef V8_INTERPRETED_REGEXP
-
-class RegExpMacroAssemblerX64: public NativeRegExpMacroAssembler {
- public:
-  RegExpMacroAssemblerX64(Isolate* isolate, Zone* zone, Mode mode,
-                          int registers_to_save);
-  virtual ~RegExpMacroAssemblerX64();
-  virtual int stack_limit_slack();
-  virtual void AdvanceCurrentPosition(int by);
-  virtual void AdvanceRegister(int reg, int by);
-  virtual void Backtrack();
-  virtual void Bind(Label* label);
-  virtual void CheckAtStart(Label* on_at_start);
-  virtual void CheckCharacter(uint32_t c, Label* on_equal);
-  virtual void CheckCharacterAfterAnd(uint32_t c,
-                                      uint32_t mask,
-                                      Label* on_equal);
-  virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
-  virtual void CheckCharacterLT(uc16 limit, Label* on_less);
-  // A "greedy loop" is a loop that is both greedy and with a simple
-  // body. It has a particularly simple implementation.
-  virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);
-  virtual void CheckNotAtStart(Label* on_not_at_start);
-  virtual void CheckNotBackReference(int start_reg, Label* on_no_match);
-  virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
-                                               Label* on_no_match);
-  virtual void CheckNotCharacter(uint32_t c, Label* on_not_equal);
-  virtual void CheckNotCharacterAfterAnd(uint32_t c,
-                                         uint32_t mask,
-                                         Label* on_not_equal);
-  virtual void CheckNotCharacterAfterMinusAnd(uc16 c,
-                                              uc16 minus,
-                                              uc16 mask,
-                                              Label* on_not_equal);
-  virtual void CheckCharacterInRange(uc16 from,
-                                     uc16 to,
-                                     Label* on_in_range);
-  virtual void CheckCharacterNotInRange(uc16 from,
-                                        uc16 to,
-                                        Label* on_not_in_range);
-  virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set);
-
-  // Checks whether the given offset from the current position is before
-  // the end of the string.
-  virtual void CheckPosition(int cp_offset, Label* on_outside_input);
-  virtual bool CheckSpecialCharacterClass(uc16 type,
-                                          Label* on_no_match);
-  virtual void Fail();
-  virtual Handle<HeapObject> GetCode(Handle<String> source);
-  virtual void GoTo(Label* label);
-  virtual void IfRegisterGE(int reg, int comparand, Label* if_ge);
-  virtual void IfRegisterLT(int reg, int comparand, Label* if_lt);
-  virtual void IfRegisterEqPos(int reg, Label* if_eq);
-  virtual IrregexpImplementation Implementation();
-  virtual void LoadCurrentCharacter(int cp_offset,
-                                    Label* on_end_of_input,
-                                    bool check_bounds = true,
-                                    int characters = 1);
-  virtual void PopCurrentPosition();
-  virtual void PopRegister(int register_index);
-  virtual void PushBacktrack(Label* label);
-  virtual void PushCurrentPosition();
-  virtual void PushRegister(int register_index,
-                            StackCheckFlag check_stack_limit);
-  virtual void ReadCurrentPositionFromRegister(int reg);
-  virtual void ReadStackPointerFromRegister(int reg);
-  virtual void SetCurrentPositionFromEnd(int by);
-  virtual void SetRegister(int register_index, int to);
-  virtual bool Succeed();
-  virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
-  virtual void ClearRegisters(int reg_from, int reg_to);
-  virtual void WriteStackPointerToRegister(int reg);
-
-  static Result Match(Handle<Code> regexp,
-                      Handle<String> subject,
-                      int* offsets_vector,
-                      int offsets_vector_length,
-                      int previous_index,
-                      Isolate* isolate);
-
-  static Result Execute(Code* code,
-                        String* input,
-                        int start_offset,
-                        const byte* input_start,
-                        const byte* input_end,
-                        int* output,
-                        bool at_start);
-
-  // Called from RegExp if the stack-guard is triggered.
-  // If the code object is relocated, the return address is fixed before
-  // returning.
-  static int CheckStackGuardState(Address* return_address,
-                                  Code* re_code,
-                                  Address re_frame);
-
- private:
-  // Offsets from rbp of function parameters and stored registers.
-  static const int kFramePointer = 0;
-  // Above the frame pointer - function parameters and return address.
-  static const int kReturn_eip = kFramePointer + kRegisterSize;
-  static const int kFrameAlign = kReturn_eip + kRegisterSize;
-
-#ifdef _WIN64
-  // Parameters (first four passed as registers, but with room on stack).
-  // In Microsoft 64-bit Calling Convention, there is room on the callers
-  // stack (before the return address) to spill parameter registers. We
-  // use this space to store the register passed parameters.
-  static const int kInputString = kFrameAlign;
-  // StartIndex is passed as 32 bit int.
-  static const int kStartIndex = kInputString + kRegisterSize;
-  static const int kInputStart = kStartIndex + kRegisterSize;
-  static const int kInputEnd = kInputStart + kRegisterSize;
-  static const int kRegisterOutput = kInputEnd + kRegisterSize;
-  // For the case of global regular expression, we have room to store at least
-  // one set of capture results.  For the case of non-global regexp, we ignore
-  // this value. NumOutputRegisters is passed as 32-bit value.  The upper
-  // 32 bit of this 64-bit stack slot may contain garbage.
-  static const int kNumOutputRegisters = kRegisterOutput + kRegisterSize;
-  static const int kStackHighEnd = kNumOutputRegisters + kRegisterSize;
-  // DirectCall is passed as 32 bit int (values 0 or 1).
-  static const int kDirectCall = kStackHighEnd + kRegisterSize;
-  static const int kIsolate = kDirectCall + kRegisterSize;
-#else
-  // In AMD64 ABI Calling Convention, the first six integer parameters
-  // are passed as registers, and caller must allocate space on the stack
-  // if it wants them stored. We push the parameters after the frame pointer.
-  static const int kInputString = kFramePointer - kRegisterSize;
-  static const int kStartIndex = kInputString - kRegisterSize;
-  static const int kInputStart = kStartIndex - kRegisterSize;
-  static const int kInputEnd = kInputStart - kRegisterSize;
-  static const int kRegisterOutput = kInputEnd - kRegisterSize;
-
-  // For the case of global regular expression, we have room to store at least
-  // one set of capture results.  For the case of non-global regexp, we ignore
-  // this value.
-  static const int kNumOutputRegisters = kRegisterOutput - kRegisterSize;
-  static const int kStackHighEnd = kFrameAlign;
-  static const int kDirectCall = kStackHighEnd + kRegisterSize;
-  static const int kIsolate = kDirectCall + kRegisterSize;
-#endif
-
-#ifdef _WIN64
-  // Microsoft calling convention has three callee-saved registers
-  // (that we are using). We push these after the frame pointer.
-  static const int kBackup_rsi = kFramePointer - kRegisterSize;
-  static const int kBackup_rdi = kBackup_rsi - kRegisterSize;
-  static const int kBackup_rbx = kBackup_rdi - kRegisterSize;
-  static const int kLastCalleeSaveRegister = kBackup_rbx;
-#else
-  // AMD64 Calling Convention has only one callee-save register that
-  // we use. We push this after the frame pointer (and after the
-  // parameters).
-  static const int kBackup_rbx = kNumOutputRegisters - kRegisterSize;
-  static const int kLastCalleeSaveRegister = kBackup_rbx;
-#endif
-
-  static const int kSuccessfulCaptures = kLastCalleeSaveRegister - kPointerSize;
-  // When adding local variables remember to push space for them in
-  // the frame in GetCode.
-  static const int kInputStartMinusOne = kSuccessfulCaptures - kPointerSize;
-
-  // First register address. Following registers are below it on the stack.
-  static const int kRegisterZero = kInputStartMinusOne - kPointerSize;
-
-  // Initial size of code buffer.
-  static const size_t kRegExpCodeSize = 1024;
-
-  // Load a number of characters at the given offset from the
-  // current position, into the current-character register.
-  void LoadCurrentCharacterUnchecked(int cp_offset, int character_count);
-
-  // Check whether preemption has been requested.
-  void CheckPreemption();
-
-  // Check whether we are exceeding the stack limit on the backtrack stack.
-  void CheckStackLimit();
-
-  // Generate a call to CheckStackGuardState.
-  void CallCheckStackGuardState();
-
-  // The rbp-relative location of a regexp register.
-  Operand register_location(int register_index);
-
-  // The register containing the current character after LoadCurrentCharacter.
-  inline Register current_character() { return rdx; }
-
-  // The register containing the backtrack stack top. Provides a meaningful
-  // name to the register.
-  inline Register backtrack_stackpointer() { return rcx; }
-
-  // The registers containing a self pointer to this code's Code object.
-  inline Register code_object_pointer() { return r8; }
-
-  // Byte size of chars in the string to match (decided by the Mode argument)
-  inline int char_size() { return static_cast<int>(mode_); }
-
-  // Equivalent to a conditional branch to the label, unless the label
-  // is NULL, in which case it is a conditional Backtrack.
-  void BranchOrBacktrack(Condition condition, Label* to);
-
-  void MarkPositionForCodeRelativeFixup() {
-    code_relative_fixup_positions_.Add(masm_.pc_offset(), zone());
-  }
-
-  void FixupCodeRelativePositions();
-
-  // Call and return internally in the generated code in a way that
-  // is GC-safe (i.e., doesn't leave absolute code addresses on the stack)
-  inline void SafeCall(Label* to);
-  inline void SafeCallTarget(Label* label);
-  inline void SafeReturn();
-
-  // Pushes the value of a register on the backtrack stack. Decrements the
-  // stack pointer (rcx) by a word size and stores the register's value there.
-  inline void Push(Register source);
-
-  // Pushes a value on the backtrack stack. Decrements the stack pointer (rcx)
-  // by a word size and stores the value there.
-  inline void Push(Immediate value);
-
-  // Pushes the Code object relative offset of a label on the backtrack stack
-  // (i.e., a backtrack target). Decrements the stack pointer (rcx)
-  // by a word size and stores the value there.
-  inline void Push(Label* label);
-
-  // Pops a value from the backtrack stack. Reads the word at the stack pointer
-  // (rcx) and increments it by a word size.
-  inline void Pop(Register target);
-
-  // Drops the top value from the backtrack stack without reading it.
-  // Increments the stack pointer (rcx) by a word size.
-  inline void Drop();
-
-  inline void ReadPositionFromRegister(Register dst, int reg);
-
-  Isolate* isolate() const { return masm_.isolate(); }
-
-  MacroAssembler masm_;
-  MacroAssembler::NoRootArrayScope no_root_array_scope_;
-
-  ZoneList<int> code_relative_fixup_positions_;
-
-  // Which mode to generate code for (LATIN1 or UC16).
-  Mode mode_;
-
-  // One greater than maximal register index actually used.
-  int num_registers_;
-
-  // Number of registers to output at the end (the saved registers
-  // are always 0..num_saved_registers_-1)
-  int num_saved_registers_;
-
-  // Labels used internally.
-  Label entry_label_;
-  Label start_label_;
-  Label success_label_;
-  Label backtrack_label_;
-  Label exit_label_;
-  Label check_preempt_label_;
-  Label stack_overflow_label_;
-};
-
-#endif  // V8_INTERPRETED_REGEXP
-
-}}  // namespace v8::internal
-
-#endif  // V8_X64_REGEXP_MACRO_ASSEMBLER_X64_H_