X64: Implement CEntryStub and JSEntryTrampoline.

src/x64/assembler-x64-inl.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 231 matching lines @@
 
 Object** RelocInfo::call_object_address() {
   UNIMPLEMENTED();  // IA32 code below.
   ASSERT(IsCallInstruction());
   return reinterpret_cast<Object**>(pc_ + 1);
 }
 
 // -----------------------------------------------------------------------------
 // Implementation of Operand
 
-Operand::Operand(Register base, int32_t disp) {
-  len_ = 1;
-  if (base.is(rsp) || base.is(r12)) {
-    // SIB byte is needed to encode (rsp + offset) or (r12 + offset).
-    set_sib(kTimes1, rsp, base);
-  }
-
-  if (disp == 0 && !base.is(rbp) && !base.is(r13)) {
-    set_modrm(0, rsp);
-  } else if (is_int8(disp)) {
-    set_modrm(1, base);
-    set_disp8(disp);
-  } else {
-    set_modrm(2, base);
-    set_disp32(disp);
-  }
-}
-
 void Operand::set_modrm(int mod, Register rm) {
   ASSERT((mod & -4) == 0);
   buf_[0] = mod << 6 | (rm.code() & 0x7);
   // Set REX.B to the high bit of rm.code().
   rex_ |= (rm.code() >> 3);
 }
 
 
 void Operand::set_sib(ScaleFactor scale, Register index, Register base) {
   ASSERT(len_ == 1);
@@ skipping 17 matching lines @@
   ASSERT(len_ == 1 || len_ == 2);
   int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]);
   *p = disp;
   len_ += sizeof(int32_t);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_INL_H_