Add the emitp function for X64 assembler

src/x64/assembler-x64-inl.h

 // Copyright 2012 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 33 matching lines @@
 
 static const byte kCallOpcode = 0xE8;
 
 
 void Assembler::emitl(uint32_t x) {
   Memory::uint32_at(pc_) = x;
   pc_ += sizeof(uint32_t);
 }
 
 
+void Assembler::emitp(void* x, RelocInfo::Mode rmode) {
+  uintptr_t value = reinterpret_cast<uintptr_t>(x);
+  Memory::uintptr_at(pc_) = value;
+  if (!RelocInfo::IsNone(rmode)) {
+    RecordRelocInfo(rmode, value);
+  }
+  pc_ += sizeof(uintptr_t);
+}
+
+
 void Assembler::emitq(uint64_t x, RelocInfo::Mode rmode) {
   Memory::uint64_at(pc_) = x;
   if (!RelocInfo::IsNone(rmode)) {
     RecordRelocInfo(rmode, x);
   }
   pc_ += sizeof(uint64_t);
 }
 
 
 void Assembler::emitw(uint16_t x) {
@@ skipping 465 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_