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Error: opcode not supported on this processor

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goumba

Joined: 20 Nov 2008
Posts: 8

Posted: Wed Jun 02, 2010 12:17 pm Post subject: Error: opcode not supported on this processor

Hi,

When compiling gcc (4.5.0), everything goes well, except for when compiling libgcc2, I get the following errors:

Code:

/tmp/ccsuK1rd.s: Assembler messages:
/tmp/ccsuK1rd.s:184: Error: opcode not supported on this processor: allegrex (mips2) `movt $6,$0,$fcc0'
/tmp/ccsuK1rd.s:221: Error: opcode not supported on this processor: allegrex (mips2) `movt $6,$0,$fcc0'

I've never touched assembly, so can anyone point me in the right direction to correct this? Looking at the binutils patches the opcode is not available, is there a suitable substitute?

Also while compiling libvorbis, I get similar errors for movf.

TIA

hlide

Joined: 10 Sep 2006
Posts: 750

Posted: Sun Jun 13, 2010 7:57 pm Post subject: Re: Error: opcode not supported on this processor

goumba wrote:

Hi,

When compiling gcc (4.5.0), everything goes well, except for when compiling libgcc2, I get the following errors:

Code:

obviously someone messes with Allegrex port in gcc 4.5 or trying to compile with non Allegrex compatible gcc.

movt/f uses rd, rs and *rt*, not $fcc0

so it must be : "movt $6, $0, $0" which means "if ($0) $6 = $0;"

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