Don't blindly use blx instruction without knowing whether the CPU supports it...

src/codegen-arm.cc

 // Copyright 2006-2009 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 4556 matching lines @@
     // Calling convention says that first double is in r0 and r1.
     __ ldr(r0, FieldMemOperand(r1, HeapNumber::kValueOffset));
     __ ldr(r1, FieldMemOperand(r1, HeapNumber::kValueOffset + kPointerSize));
     // Call C routine that may not cause GC or other trouble.
     __ mov(r5, Operand(ExternalReference::double_fp_operation(operation)));
 #if !defined(__arm__)
     // Notify the simulator that we are calling an add routine in C.
     __ swi(swi_number);
 #else
     // Actually call the add routine written in C.
-    __ blx(r5);
+    __ Call(r5);
 #endif
     // Store answer in the overwritable heap number.
     __ pop(r4);
     __ str(r0, FieldMemOperand(r4, HeapNumber::kValueOffset));
     __ str(r1, FieldMemOperand(r4, HeapNumber::kValueOffset + kPointerSize));
     __ mov(r0, Operand(r4));
     // And we are done.
     __ pop(pc);
   }
 }
@@ skipping 725 matching lines @@
   __ mov(r2, Operand(0));
   __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION);
   __ Jump(Handle<Code>(Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline)),
           RelocInfo::CODE_TARGET);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal