Add mips64 port.

src/mips64/regexp-macro-assembler-mips64.h

Index: src/mips64/regexp-macro-assembler-mips64.h
diff --git a/src/mips/regexp-macro-assembler-mips.h b/src/mips64/regexp-macro-assembler-mips64.h
similarity index 79%
copy from src/mips/regexp-macro-assembler-mips.h
copy to src/mips64/regexp-macro-assembler-mips64.h
index ddf484cbbe896156a0f43ff5e8bd2bf596d6d9a7..647e4150cb1484c7db4d3b0cd8968a76de733958 100644
--- a/src/mips/regexp-macro-assembler-mips.h
+++ b/src/mips64/regexp-macro-assembler-mips64.h
@@ -7,9 +7,9 @@
 #define V8_MIPS_REGEXP_MACRO_ASSEMBLER_MIPS_H_
 
 #include "src/macro-assembler.h"
-#include "src/mips/assembler-mips-inl.h"
-#include "src/mips/assembler-mips.h"
-#include "src/mips/macro-assembler-mips.h"
+#include "src/mips64/assembler-mips64-inl.h"
+#include "src/mips64/assembler-mips64.h"
+#include "src/mips64/macro-assembler-mips64.h"
 
 namespace v8 {
 namespace internal {
@@ -93,7 +93,45 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
                                   Code* re_code,
                                   Address re_frame);
 
+  void print_regexp_frame_constants();
+
  private:
+#if defined(MIPS_ABI_N64)
+  // Offsets from frame_pointer() of function parameters and stored registers.
+  static const int kFramePointer = 0;
+
+  // Above the frame pointer - Stored registers and stack passed parameters.
+  // Registers s0 to s7, fp, and ra.
+  static const int kStoredRegisters = kFramePointer;
+  // Return address (stored from link register, read into pc on return).
+
+// TODO(plind): This 9 - is 8 s-regs (s0..s7) plus fp.
+
+  static const int kReturnAddress = kStoredRegisters + 9 * kPointerSize;
+  static const int kSecondaryReturnAddress = kReturnAddress + kPointerSize;
+  // Stack frame header.
+  static const int kStackFrameHeader = kSecondaryReturnAddress;
+  // Stack parameters placed by caller.
+  static const int kIsolate = kStackFrameHeader + kPointerSize;
+
+  // Below the frame pointer.
+  // Register parameters stored by setup code.
+  static const int kDirectCall = kFramePointer - kPointerSize;
+  static const int kStackHighEnd = kDirectCall - kPointerSize;
+  static const int kNumOutputRegisters = kStackHighEnd - kPointerSize;
+  static const int kRegisterOutput = kNumOutputRegisters - kPointerSize;
+  static const int kInputEnd = kRegisterOutput - kPointerSize;
+  static const int kInputStart = kInputEnd - kPointerSize;
+  static const int kStartIndex = kInputStart - kPointerSize;
+  static const int kInputString = kStartIndex - kPointerSize;
+  // When adding local variables remember to push space for them in
+  // the frame in GetCode.
+  static const int kSuccessfulCaptures = kInputString - kPointerSize;
+  static const int kInputStartMinusOne = kSuccessfulCaptures - kPointerSize;
+  // First register address. Following registers are below it on the stack.
+  static const int kRegisterZero = kInputStartMinusOne - kPointerSize;
+
+#elif defined(MIPS_ABI_O32)
   // Offsets from frame_pointer() of function parameters and stored registers.
   static const int kFramePointer = 0;
 
@@ -106,7 +144,8 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
   // Stack frame header.
   static const int kStackFrameHeader = kReturnAddress + kPointerSize;
   // Stack parameters placed by caller.
-  static const int kRegisterOutput = kStackFrameHeader + 20;
+  static const int kRegisterOutput =
+      kStackFrameHeader + 4 * kPointerSize + kPointerSize;
   static const int kNumOutputRegisters = kRegisterOutput + kPointerSize;
   static const int kStackHighEnd = kNumOutputRegisters + kPointerSize;
   static const int kDirectCall = kStackHighEnd + kPointerSize;
@@ -125,6 +164,10 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
   // First register address. Following registers are below it on the stack.
   static const int kRegisterZero = kInputStartMinusOne - kPointerSize;
 
+#else
+# error "undefined MIPS ABI"
+#endif
+
   // Initial size of code buffer.
   static const size_t kRegExpCodeSize = 1024;
 
@@ -147,13 +190,13 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
 
   // Register holding the current input position as negative offset from
   // the end of the string.
-  inline Register current_input_offset() { return t2; }
+  inline Register current_input_offset() { return a6; }
 
   // The register containing the current character after LoadCurrentCharacter.
-  inline Register current_character() { return t3; }
+  inline Register current_character() { return a7; }
 
   // Register holding address of the end of the input string.
-  inline Register end_of_input_address() { return t6; }
+  inline Register end_of_input_address() { return t2; }
 
   // Register holding the frame address. Local variables, parameters and
   // regexp registers are addressed relative to this.
@@ -161,10 +204,10 @@ class RegExpMacroAssemblerMIPS: public NativeRegExpMacroAssembler {
 
   // The register containing the backtrack stack top. Provides a meaningful
   // name to the register.
-  inline Register backtrack_stackpointer() { return t4; }
+  inline Register backtrack_stackpointer() { return t0; }
 
   // Register holding pointer to the current code object.
-  inline Register code_pointer() { return t1; }
+  inline Register code_pointer() { return a5; }
 
   // Byte size of chars in the string to match (decided by the Mode argument).
   inline int char_size() { return static_cast<int>(mode_); }