[Bug 244428] objdump can't disassemble x86 SHA instructions

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244428

            Bug ID: 244428
           Summary: objdump can't disassemble x86 SHA instructions
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs at FreeBSD.org
          Reporter: noloader at gmail.com

I'm testing on FreeBSD. I know little to nothing about the operating system.

I have a couple of source files that use x86 SHA intrinsics. See
https://github.com/noloader/ldns/blob/develop-sha/sha1.c and
https://github.com/noloader/ldns/blob/develop-sha/sha256.c.

Attempting to verify the code generation results in the following. It is mostly
garbage.

$ objdump -d sha1.o
...

0000000000001170 <ldns_sha1_transform_x86>:
    1170:       66 0f 6f 25 00 00 00    movdqa 0x0(%rip),%xmm4        # 1178
<ldns_sha1_transform_x86+0x8>
    1177:       00 
    1178:       f3 0f 6f 06             movdqu (%rsi),%xmm0
    117c:       66 0f ef db             pxor   %xmm3,%xmm3
    1180:       f3 0f 6f 17             movdqu (%rdi),%xmm2
    1184:       66 0f 3a 22 5f 10 03    pinsrd $0x3,0x10(%rdi),%xmm3
    118b:       f3 0f 6f 7e 10          movdqu 0x10(%rsi),%xmm7
    1190:       66 0f 38 00 c4          pshufb %xmm4,%xmm0
    1195:       f3 44 0f 6f 4e 20       movdqu 0x20(%rsi),%xmm9
    119b:       66 0f 70 d2 1b          pshufd $0x1b,%xmm2,%xmm2
    11a0:       66 0f 6f cb             movdqa %xmm3,%xmm1
    11a4:       f3 44 0f 6f 46 30       movdqu 0x30(%rsi),%xmm8
    11aa:       66 0f fe c8             paddd  %xmm0,%xmm1
    11ae:       66 0f 6f f2             movdqa %xmm2,%xmm6
    11b2:       66 0f 38 00 fc          pshufb %xmm4,%xmm7
    11b7:       0f 3a cc                (bad)  
    11ba:       f1                      icebp  
    11bb:       00 66 0f                add    %ah,0xf(%rsi)
    11be:       6f                      outsl  %ds:(%rsi),(%dx)
    11bf:       ea                      (bad)  
    11c0:       66 0f 6f cf             movdqa %xmm7,%xmm1
    11c4:       0f 38 c8                (bad)  
    11c7:       ef                      out    %eax,(%dx)
    11c8:       66 0f 6f fe             movdqa %xmm6,%xmm7
    11cc:       66 44 0f 38 00 cc       pshufb %xmm4,%xmm9
    11d2:       0f 3a cc                (bad)  
    11d5:       fd                      std    
    11d6:       00 41 0f                add    %al,0xf(%rcx)
    11d9:       38 c8                   cmp    %cl,%al
    11db:       f1                      icebp  
    ...

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