Implement target cache for constructor calls.

src/ia32/debug-ia32.cc

 // Copyright 2011 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 210 matching lines @@
   Generate_DebugBreakCallHelper(masm, ecx.bit(), 0, false);
 }
 
 
 void Debug::GenerateConstructCallDebugBreak(MacroAssembler* masm) {
   // Register state just before return from JS function (from codegen-ia32.cc).
   // eax is the actual number of arguments not encoded as a smi see comment
   // above IC call.
   // ----------- S t a t e -------------
   //  -- eax: number of arguments (not smi)
+  //  -- ebx: cache cell for call target
   //  -- edi: constructor function
   // -----------------------------------
   // The number of arguments in eax is not smi encoded.
-  Generate_DebugBreakCallHelper(masm, edi.bit(), eax.bit(), false);
+  Generate_DebugBreakCallHelper(masm, ebx.bit() | edi.bit(), eax.bit(), false);
 }
 
 
 void Debug::GenerateReturnDebugBreak(MacroAssembler* masm) {
   // Register state just before return from JS function (from codegen-ia32.cc).
   // ----------- S t a t e -------------
   //  -- eax: return value
   // -----------------------------------
   Generate_DebugBreakCallHelper(masm, eax.bit(), 0, true);
 }
 
 
 void Debug::GenerateCallFunctionStubDebugBreak(MacroAssembler* masm) {
-  // Register state for stub CallFunction (from CallFunctionStub in ic-ia32.cc).
+  // Register state for CallFunctionStub (from code-stubs-ia32.cc).
   // ----------- S t a t e -------------
+  //  -- ebx: cache cell for call target
   //  -- edi: function
   // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, edi.bit(), 0, false);
+  Generate_DebugBreakCallHelper(masm, ebx.bit() | edi.bit(), 0, false);
 }
 
 
 void Debug::GenerateSlot(MacroAssembler* masm) {
   // Generate enough nop's to make space for a call instruction.
   Label check_codesize;
   __ bind(&check_codesize);
   __ RecordDebugBreakSlot();
   __ Nop(Assembler::kDebugBreakSlotLength);
   ASSERT_EQ(Assembler::kDebugBreakSlotLength,
@@ skipping 39 matching lines @@
 
 const bool Debug::kFrameDropperSupported = true;
 
 #undef __
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32