gas-1.92.3 crashes when given unusual 'movc' instruction

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1 total messages Started by steveu Thu, 06 Aug 1992 05:02

#210

Author: steveu
Date: Thu, 06 Aug 1992 05:02

19 lines
1102 bytes

The following assembler line causes gas-1.92.3 to crash:

	movc a0,#0x806	  | hardcode the 68040 'User Root Pointer' register

The assembler is built as a 68K cross-assembler, and runs on a Sun-4, 
running SunOS 4.1.1.

Neither gas-1.35 and gas-1.38 can assemble this instruction.  Both produce 
the message:

	FATAL:Internal error:  Unknown mode #j

Admittedly, the 'movec' instruction isn't required to be able to accept
an arbitrary numeric argument in place of a named control register, but
the feature can come in handy when trying to use gas with processors
which gas doesn't yet fully support.

----------
Steve Ulrich   Tektronix   Beaverton, OR  steveu@tasha.tv.tek.com

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