/usr/share/doc/nasm/examples/movd64.asm is in nasm 2.11.05-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | bits 64
movd r8d, mm1
movd r8, mm1
movq r8, mm1
movd [rax], mm1
movq [rax], mm1
movd dword [rax], mm1
; movq dword [rax], mm1
movd qword [rax], mm1
movq qword [rax], mm1
; movd mm2, mm1
movq mm2, mm1
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