Always initialize the debugger eagerly.

src/mips/debug-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
@@ skipping 15 matching lines @@
   // lw ra, sp(4)
   // addiu sp, sp, 8
   // addiu sp, sp, N
   // jr ra
   // nop (in branch delay slot)
 
   // Make sure this constant matches the number if instrucntions we emit.
   ASSERT(Assembler::kJSReturnSequenceInstructions == 7);
   CodePatcher patcher(rinfo()->pc(), Assembler::kJSReturnSequenceInstructions);
   // li and Call pseudo-instructions emit two instructions each.
-  patcher.masm()->li(v8::internal::t9,
-      Operand(reinterpret_cast<int32_t>(
-        debug_info_->GetIsolate()->debug()->debug_break_return()->entry())));
+  patcher.masm()->li(v8::internal::t9, Operand(reinterpret_cast<int32_t>(
+      debug_info_->GetIsolate()->builtins()->Return_DebugBreak()->entry())));
   patcher.masm()->Call(v8::internal::t9);
   patcher.masm()->nop();
   patcher.masm()->nop();
   patcher.masm()->nop();
 
   // TODO(mips): Open issue about using breakpoint instruction instead of nops.
   // patcher.masm()->bkpt(0);
 }
 
 
@@ skipping 24 matching lines @@
   // Patch the code changing the debug break slot code from:
   //   nop(DEBUG_BREAK_NOP) - nop(1) is sll(zero_reg, zero_reg, 1)
   //   nop(DEBUG_BREAK_NOP)
   //   nop(DEBUG_BREAK_NOP)
   //   nop(DEBUG_BREAK_NOP)
   // to a call to the debug break slot code.
   //   li t9, address   (lui t9 / ori t9 instruction pair)
   //   call t9          (jalr t9 / nop instruction pair)
   CodePatcher patcher(rinfo()->pc(), Assembler::kDebugBreakSlotInstructions);
   patcher.masm()->li(v8::internal::t9, Operand(reinterpret_cast<int32_t>(
-      debug_info_->GetIsolate()->debug()->debug_break_slot()->entry())));
+      debug_info_->GetIsolate()->builtins()->Slot_DebugBreak()->entry())));
   patcher.masm()->Call(v8::internal::t9);
 }
 
 
 void BreakLocationIterator::ClearDebugBreakAtSlot() {
   ASSERT(IsDebugBreakSlot());
   rinfo()->PatchCode(original_rinfo()->pc(),
                      Assembler::kDebugBreakSlotInstructions);
 }
 
@@ skipping 216 matching lines @@
 }
 
 
 const bool Debug::kFrameDropperSupported = false;
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS