Rework the way we handle the fact that the ARM simulator uses a...

src/arm/simulator-arm.cc

Index: src/arm/simulator-arm.cc
===================================================================
--- src/arm/simulator-arm.cc	(revision 3208)
+++ src/arm/simulator-arm.cc	(working copy)
@@ -1924,6 +1924,25 @@
   return result;
 }
 
+
+uintptr_t Simulator::PushAddress(uintptr_t address) {
+  int new_sp = get_register(sp) - sizeof(uintptr_t);
+  uintptr_t* stack_slot = reinterpret_cast<uintptr_t*>(new_sp);
+  *stack_slot = address;
+  set_register(sp, new_sp);
+  return new_sp;
+}
+
+
+uintptr_t Simulator::PopAddress() {
+  int current_sp = get_register(sp);
+  uintptr_t* stack_slot = reinterpret_cast<uintptr_t*>(current_sp);
+  uintptr_t address = *stack_slot;
+  set_register(sp, current_sp + sizeof(uintptr_t));
+  return address;
+}
+
+
 } }  // namespace assembler::arm
 
 #endif  // !defined(__arm__)