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objdump issues on ppc64?


Hi Everyone,

I'm working on a Power8 implementation of SHA using built-ins. I'm
seeing some unusual results. For example:

ppc64-le (gcc112.fsffrance.org) (notice the unused v0 in 'vperm v0,v0,v0,v17'):

   ...
   10000b0c:   a6 03 09 7d     mtctr   r8
   10000b10:   57 02 00 f0     xxswapd vs32,vs32
   10000b14:   6b 04 00 10     vperm   v0,v0,v0,v17
   10000b18:   57 02 00 f0     xxswapd vs32,vs32
   10000b1c:   99 57 00 7c     stxvd2x vs32,0,r10
   10000b20:   99 26 0c 7c     lxvd2x  vs32,r12,r4
   10000b24:   57 02 00 f0     xxswapd vs32,vs32
   10000b28:   6b 04 00 10     vperm   v0,v0,v0,v17
   10000b2c:   57 02 00 f0     xxswapd vs32,vs32
   10000b30:   99 67 0a 7c     stxvd2x vs32,r10,r12
   10000b34:   99 26 0b 7c     lxvd2x  vs32,r11,r4
   10000b38:   57 02 00 f0     xxswapd vs32,vs32

ppc64-be (gcc119.fsffrance.org) (I think this is the same block of
code, give or take):

    10000680 <.bb>:
    10000680:       7d 40 26 18     .long 0x7d402618
    10000684:       7d 09 03 a6     mtctr   r8
    10000688:       7d 40 57 18     .long 0x7d405718
    1000068c:       7d 6a ff 18     .long 0x7d6aff18
    10000690:       7d 8a 67 18     .long 0x7d8a6718
    10000694:       7c 0a 07 18     .long 0x7c0a0718
    10000698:       60 00 00 00     oril    r0,r0,0

    1000069c <.bb>:
    1000069c:       7c 0a 4e 19     .long 0x7c0a4e19

    100006a0 <.bb>:
    100006a0:       38 a9 ff fc     cal     r5,-4(r9)

    100006a4 <.bb>:
    100006a4:       38 c9 00 20     cal     r6,32(r9)

I'm guessing there are some outstanding issues with objdump.

Is anyone interested in working on them with me?

Jeff


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