On Wed, Jul 09, 2025 at 01:54:07PM +0200, Fabio Valentini wrote:
> Yeah - the i686 arch baseline *SHOULD* include SSE2 - since Fedora 29:
> https://fedoraproject.org/wiki/Changes/Update_i686_architectural_baseline_to_include_SSE2
But the
66 REX.W 0F 7E /r
MOVQ r/m64, xmm
instruction doesn't require just SSE2, but also 64-bit mode.
REX prefix isn't available in 32-bit mode.
Try assembling it for 32-bit mode:
movq %xmm1, %rax
Jakub
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