Patch for allowing several V8 instances in process:...

src/arm/ic-arm.cc

 // Copyright 2006-2008 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 582 matching lines @@
   __ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
   __ cmp(r3, ip);
   __ b(ne, &slow);
   // Check that the key (index) is within bounds.
   __ ldr(r3, FieldMemOperand(r1, Array::kLengthOffset));
   __ cmp(r0, Operand(r3));
   __ b(lo, &fast);
 
   // Slow case: Push extra copies of the arguments (2).
   __ bind(&slow);
-  __ IncrementCounter(&Counters::keyed_load_generic_slow, 1, r0, r1);
+  __ IncrementCounter(&COUNTER(keyed_load_generic_slow), 1, r0, r1);
   __ ldm(ia, sp, r0.bit() | r1.bit());
   __ stm(db_w, sp, r0.bit() | r1.bit());
   // Do tail-call to runtime routine.
   __ TailCallRuntime(ExternalReference(Runtime::kGetProperty), 2, 1);
 
   // Fast case: Do the load.
   __ bind(&fast);
   __ add(r3, r1, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
   __ ldr(r0, MemOperand(r3, r0, LSL, kPointerSizeLog2));
   __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
@@ skipping 220 matching lines @@
 
   // Perform tail call to the entry.
   __ TailCallRuntime(f, 3, 1);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal