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CARM: ARE ARM7 32/64-BIT MAC INSTRUCTIONS SUPPORTED?


Information in this article applies to:

  • CARM Version 1.4 and Earlier

QUESTION

The ARM7TDMI instruction set includes four instructions which perform 32-bit by 32-bit multiplication with 64-bit result and 32-bit by 32-bit multiplication-accumulation (MAC) with 64-bit result. Does the Keil ARM compiler use these instructions?

ANSWER

No, this is not supported by the Keil ARM compiler. Use the RealView Compiler.

In the Project — Components, Environment and Books — Select ARM Development Tools dialog, select Use RealView Compiler.

MORE INFORMATION

  • Refer to Keil\ARM\Hlp\armtools.chm\RealView Compilation Tools Introduction\Convert from CARM.

Last Reviewed: Thursday, January 18, 2007


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