ARM asm problem.uxtb instr

Dave Pawson dave.pawson@gmail.com
Tue Dec 13 10:58:00 GMT 2011


I see
UXTB<c>.W <Rd>,<Rm>{,<rotation>}

I try


	uxtb	r0, r1,r2
	uxtb	r0, r1,r2, ror #16

and receive error


arm.asm:411: Error: missing rotation field after comma -- `uxtb r0,r1,r2'
arm.asm:412: Error: missing rotation field after comma -- `uxtb r0,r1,r2,ror#16'

The rotate operation is optional I think?
and when there still produces the error?

I've stared at it for 10 minutes, I don't think there's anything wrong?

Using arm-linux-elf-as -mcpu=arm1176jzf-s -mfpu=vfpv2


regards


-- 
Dave Pawson
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