Charles Boyd on Wed, 26 Oct 2011 21:31:05 +0200

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re: UMULL support on ARM/Android


I received the following answer to the question (which came up a few weeks ago on this mailing list) about UMULL on ARM/Android platform:

The simple answer is yes, UMULL will be available.  There is some detail though:

The NDK supports ARMv5TE or ARMv7 - in the form of armeabi and armeabi-v7a, both of these are
capable of UMULL instructions.

For armeabi binaries you will need to be in ARM state (the instruction is not supported by Thumb), for armeabi-v7 either
ARM or Thumb2 provide the instruction.

This is from a thread I started on the android-ndk mailing list: