yasm error: invalid combination of opcode and operands

[Peter Johnson]

Peter,

According to the Intel instruction set reference, movdqa only takes SSE
register parameters (e.g. "xmm2"), not MMX registers (e.g. "mm2"), which
is why yasm rejects the instruction.

Regards,
Peter Johnson

On Mon, 9 Feb 2004, Peter [ISO-8859-1] Müller wrote:

> Hi,
>
> yasm doesn't assemble 'movdqa	[esp + st_struc.s_yp + 8],mm2'.
> test with the latest cvs snapshot 08. Feb. 2004
>
> here is a little test:
>
> cpu P4
>
> section .data
>
> struc  st_struc
>   .s_yp		resq	2
> endstruc
>
> section .text
>
> global invalidop
> invalidop:
>     enter	0, 0
>     sub         esp,((st_struc_size) + 3) & 0FFFFFFFCh
>     and 	esp, 0FFFFFFF0h
>     movdqa	[esp + st_struc.s_yp + 8],mm2
>     leave
>     ret
> __invalidop:
>
> commandline: yasm --arch=x86 --oformat=elf --machine=x86 --parser=nasm --preproc=nasm
> pre.asm -o pre.o
>
> with regards
> peter
>
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