MIPS: Long branch implementation and trampoline improvement.

src/mips/assembler-mips-inl.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 65 matching lines @@
 bool Operand::is_reg() const {
   return rm_.is_valid();
 }
 
 
 
 // -----------------------------------------------------------------------------
 // RelocInfo.
 
 void RelocInfo::apply(intptr_t delta) {
-  // On MIPS we do not use pc relative addressing, so we don't need to patch the
-  // code here.
+  if (IsInternalReference(rmode_)) {
+    // Absolute code pointer inside code object moves with the code object.
+    byte* p = reinterpret_cast<byte*>(pc_);
+    int count = Assembler::RelocateInternalReference(p, delta);
+    CPU::FlushICache(p, count * sizeof(uint32_t));
+  }
 }
 
 
 Address RelocInfo::target_address() {
   ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
   return Assembler::target_address_at(pc_);
 }
 
 
 Address RelocInfo::target_address_address() {
@@ skipping 195 matching lines @@
 
 
 void Assembler::CheckTrampolinePoolQuick() {
   if (pc_offset() >= next_buffer_check_) {
     CheckTrampolinePool();
   }
 }
 
 
 void Assembler::emit(Instr x) {
-  CheckBuffer();
+  if (!is_buffer_growth_blocked()) {
+    CheckBuffer();
+  }
   *reinterpret_cast<Instr*>(pc_) = x;
   pc_ += kInstrSize;
   CheckTrampolinePoolQuick();
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_ASSEMBLER_MIPS_INL_H_