Add a trap_on_abort flag

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 190e8682f711c4c9c8046b85897d485ee5d4f200..a396ac1b50a08282defe2565dd276d158611b0c3 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -2847,6 +2847,11 @@ void MacroAssembler::Abort(BailoutReason reason) {
     RecordComment("Abort message: ");
     RecordComment(msg);
   }
+
+  if (FLAG_trap_on_abort) {
+    DebugBreak();

[Michael Starzinger, 2013/08/22 13:36:16]

You probably want to use "stop()" instead of "DebugBreak()" here, because
otherwise you are calling into the JavaScript debugger.

+    return;
+  }
 #endif
 
   mov(r0, Operand(p0));