| Index: runtime/vm/runtime_entry_arm.cc
 | 
| ===================================================================
 | 
| --- runtime/vm/runtime_entry_arm.cc	(revision 19723)
 | 
| +++ runtime/vm/runtime_entry_arm.cc	(working copy)
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| @@ -27,7 +27,12 @@
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|    // into the runtime system.
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|    uword entry = GetEntryPoint();
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|  #if defined(USING_SIMULATOR)
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| -  entry = Simulator::RedirectExternalReference(entry, Simulator::kRuntimeCall);
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| +  // Redirection to leaf runtime calls supports a maximum of 4 arguments passed
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| +  // in registers.
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| +  ASSERT(!is_leaf() || (argument_count() <= 4));
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| +  Simulator::CallKind call_kind =
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| +      is_leaf() ? Simulator::kLeafRuntimeCall : Simulator::kRuntimeCall;
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| +  entry = Simulator::RedirectExternalReference(entry, call_kind);
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|  #endif
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|    if (is_leaf()) {
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|      ExternalLabel label(name(), entry);
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| 
 |