deps: upgrade to V8 4.9.385.18

Pick up the current branch head for V8 4.9
https://github.com/v8/v8/commit/1ecba0f

PR-URL: https://github.com/nodejs/node/pull/4722
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>

2 files changed, 14 insertions, 18 deletions

diff --git a/deps/v8/src/debug/mips/OWNERS b/deps/v8/src/debug/mips/OWNERS
index 5508ba626f..89455a4fbd 100644
--- a/deps/v8/src/debug/mips/OWNERS
+++ b/deps/v8/src/debug/mips/OWNERS
@@ -3,3 +3,4 @@ gergely.kis@imgtec.com
 akos.palfi@imgtec.com
 balazs.kilvady@imgtec.com
 dusan.milosavljevic@imgtec.com
+ivica.bogosavljevic@imgtec.com
diff --git a/deps/v8/src/debug/mips/debug-mips.cc b/deps/v8/src/debug/mips/debug-mips.cc
index 30bdcac1b6..c5c58d044b 100644
--- a/deps/v8/src/debug/mips/debug-mips.cc
+++ b/deps/v8/src/debug/mips/debug-mips.cc
@@ -24,25 +24,25 @@ void EmitDebugBreakSlot(MacroAssembler* masm) {
 }
 
 
-void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode,
-                                int call_argc) {
+void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode) {
   // Generate enough nop's to make space for a call instruction. Avoid emitting
   // the trampoline pool in the debug break slot code.
   Assembler::BlockTrampolinePoolScope block_pool(masm);
-  masm->RecordDebugBreakSlot(mode, call_argc);
+  masm->RecordDebugBreakSlot(mode);
   EmitDebugBreakSlot(masm);
 }
 
 
-void DebugCodegen::ClearDebugBreakSlot(Address pc) {
-  CodePatcher patcher(pc, Assembler::kDebugBreakSlotInstructions);
+void DebugCodegen::ClearDebugBreakSlot(Isolate* isolate, Address pc) {
+  CodePatcher patcher(isolate, pc, Assembler::kDebugBreakSlotInstructions);
   EmitDebugBreakSlot(patcher.masm());
 }
 
 
-void DebugCodegen::PatchDebugBreakSlot(Address pc, Handle<Code> code) {
+void DebugCodegen::PatchDebugBreakSlot(Isolate* isolate, Address pc,
+                                       Handle<Code> code) {
   DCHECK_EQ(Code::BUILTIN, code->kind());
-  CodePatcher patcher(pc, Assembler::kDebugBreakSlotInstructions);
+  CodePatcher patcher(isolate, pc, Assembler::kDebugBreakSlotInstructions);
   // 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)
@@ -108,26 +108,21 @@ void DebugCodegen::GenerateDebugBreakStub(MacroAssembler* masm,
 }
 
 
-void DebugCodegen::GeneratePlainReturnLiveEdit(MacroAssembler* masm) {
-  __ Ret();
-}
-
-
 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
-  ExternalReference restarter_frame_function_slot =
-      ExternalReference::debug_restarter_frame_function_pointer_address(
-          masm->isolate());
-  __ li(at, Operand(restarter_frame_function_slot));
-  __ sw(zero_reg, MemOperand(at, 0));
-
   // We do not know our frame height, but set sp based on fp.
   __ Subu(sp, fp, Operand(kPointerSize));
 
   __ Pop(ra, fp, a1);  // Return address, Frame, Function.
 
+  ParameterCount dummy(0);
+  __ FloodFunctionIfStepping(a1, no_reg, dummy, dummy);
+
   // Load context from the function.
   __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
 
+  // Clear new.target as a safety measure.
+  __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
+
   // Get function code.
   __ lw(at, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(at, FieldMemOperand(at, SharedFunctionInfo::kCodeOffset));