[Nasm-bugs] [Bug 3392350] New: AVX rounding mode is not printed in disassembly

no-reply at bugzilla-nasm.gorcunov.org no-reply at bugzilla-nasm.gorcunov.org
Tue Apr 19 23:13:32 PDT 2016


http://bugzilla.nasm.us/show_bug.cgi?id=3392350

            Bug ID: 3392350
           Summary: AVX rounding mode is not printed in disassembly
           Product: NASM
           Version: 2.12.xx
          Hardware: All
                OS: All
            Status: OPEN
          Severity: normal
          Priority: Medium
         Component: Assembler
          Assignee: nobody at nasm.us
          Reporter: b7.10110111 at gmail.com
                CC: gorcunov at gmail.com, hpa at zytor.com, nasm-bugs at nasm.us

The following bash command reproduces this problem for me:

xxd -g1 -r <<< '0  62 F1 74 DD 59 FC' | ndisasm -o 0 -b 32 /dev/stdin

I get this output:

00000000  62F174DD59FC      vmulps xmm7{k5}{z},xmm1,xmm4

This instruction was compiled by nasm from

vmulps zmm7{k5}{z},zmm1,zmm4,{ru-sae}

And objdump also sees it in this way.

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