Add miscellaneous operations to x64 assembler.

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 37 matching lines @@
   pc_ += sizeof(uint32_t);
 }
 
 
 void Assembler::emitq(uint64_t x, RelocInfo::Mode rmode) {
   Memory::uint64_at(pc_) = x;
   RecordRelocInfo(rmode, x);
 }
 
 
+void Assembler::emitw(uint16_t x) {
+  Memory::uint16_at(pc_) = x;
+  pc_ += sizeof(uint16_t);
+}
+
+
 // High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B.
 // REX.W is set.  REX.X is cleared.
 void Assembler::emit_rex_64(Register reg, Register rm_reg) {
   emit(0x48 | (reg.code() & 0x8) >> 1 | rm_reg.code() >> 3);
 }
 
 
 // The high bit of reg is used for REX.R, the high bit of op's base
 // register is used for REX.B, and the high bit of op's index register
 // is used for REX.X.  REX.W is set.
@@ skipping 43 matching lines @@
 // The high bit of reg is used for REX.R, the high bit of op's base
 // register is used for REX.B, and the high bit of op's index register
 // is used for REX.X.  REX.W is cleared.  If no REX bits are set, nothing
 // is emitted.
 void Assembler::emit_optional_rex_32(Register reg, const Operand& op) {
   byte rex_bits =  (reg.code() & 0x8) >> 1 | op.rex_;
   if (rex_bits) emit(0x40 | rex_bits);
 }
 
 
-void Assembler::set_target_address_at(byte* location, byte* value) {
-  UNIMPLEMENTED();
+Address Assembler::target_address_at(Address pc) {
+  return Memory::Address_at(pc);
 }
 
 
-byte* Assembler::target_address_at(byte* location) {
-  UNIMPLEMENTED();
-  return NULL;
+void Assembler::set_target_address_at(Address pc, Address target) {
+  Memory::Address_at(pc) = target;
+  CPU::FlushICache(pc, sizeof(intptr_t));
 }
 
 
 // -----------------------------------------------------------------------------
 // Implementation of RelocInfo
 
 // The modes possibly affected by apply must be in kApplyMask.
 void RelocInfo::apply(int delta) {
   if (rmode_ == RUNTIME_ENTRY || IsCodeTarget(rmode_)) {
     intptr_t* p = reinterpret_cast<intptr_t*>(pc_);
@@ skipping 20 matching lines @@
 Address RelocInfo::target_address_address() {
   ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
   return reinterpret_cast<Address>(pc_);
 }
 
 
 void RelocInfo::set_target_address(Address target) {
   ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
   Assembler::set_target_address_at(pc_, target);
 }
+
+
 Object* RelocInfo::target_object() {
   ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
   return *reinterpret_cast<Object**>(pc_);
 }
 
 
 Object** RelocInfo::target_object_address() {
   ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
   return reinterpret_cast<Object**>(pc_);
 }
@@ skipping 102 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_