ARM: Remove support for ABI prior to EABI

src/arm/constants-arm.h

 // Copyright 2011 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 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_ARM_CONSTANTS_ARM_H_
 #define V8_ARM_CONSTANTS_ARM_H_
 
-// The simulator emulates the EABI so we define the USE_ARM_EABI macro if we
-// are not running on real ARM hardware.  One reason for this is that the
-// old ABI uses fp registers in the calling convention and the simulator does
-// not simulate fp registers or coroutine instructions.
-#if defined(__ARM_EABI__) || !defined(__arm__)
-# define USE_ARM_EABI 1
+// ARM EABI is required.
+#if defined(__arm__) && !defined(__ARM_EABI__)
+#error ARM EABI support is required.
 #endif
 
 // This means that interwork-compatible jump instructions are generated.  We
 // want to generate them on the simulator too so it makes snapshots that can
 // be used on real hardware.
 #if defined(__THUMB_INTERWORK__) || !defined(__arm__)
 # define USE_THUMB_INTERWORK 1
 #endif
 
 #if defined(__ARM_ARCH_7A__) || \
@@ skipping 722 matching lines @@
   static int Number(const char* name, bool* is_double);
 
  private:
   static const char* names_[kNumVFPRegisters];
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_CONSTANTS_ARM_H_