[x264-devel] Re: --enable-pic with 8x8dct produces illegal instruction

[Ismail Donmez]

Hi,

Noone responded to this [ except the AVI/MPEG talk we had with Jeff ], can you 
guys not produce or is it known already? Or shall I upload a small sample?

Regards,
ismail

11 Eyl 2006 Pts 14:04 tarihinde, İsmail Dönmez şunları yazmıştı: 
> Hi,
>
> When --enable-pic is used in conjuction with 8x8dct x264 produces an
> illegal instruction:
>
> x264 -8 2.mpeg -o 2.mp4 640x480
> x264 [info]: using cpu capabilities MMX MMXEXT SSE SSE2
> mp4 [info]: initial delay 0 (scale 25)
> Segmentation fault
>
> Valgrind says:
>
> vex x86->IR: unhandled instruction bytes: 0xFB 0x12 0x8 0xF0
> ==22795== valgrind: Unrecognised instruction at address 0x812FE85.
> ==22795== Your program just tried to execute an instruction that Valgrind
> ==22795== did not recognise.  There are two possible reasons for this.
> ==22795== 1. Your program has a bug and erroneously jumped to a non-code
> ==22795==    location.  If you are running Memcheck and you just saw a
> ==22795==    warning about a bad jump, it's probably your program's fault.
> ==22795== 2. The instruction is legitimate but Valgrind doesn't handle it,
> ==22795==    i.e. it's Valgrind's fault.  If you think this is the case or
> ==22795==    you are not sure, please let us know and we'll try to fix it.
> ==22795== Either way, Valgrind will now raise a SIGILL signal which will
> ==22795== probably kill your program.
> ==22795==
> ==22795== Process terminating with default action of signal 4 (SIGILL)
> ==22795==  Illegal opcode at address 0x812FE85
> ==22795==    at 0x812FE85: ???
> ==22795==    by 0x8087123: x264_macroblock_analyse (analyse.c:1979)
> ==22795==    by 0x8055D7E: x264_slice_write (encoder.c:1006)
> ==22795==    by 0x8056D1B: x264_encoder_encode (encoder.c:1127)
> ==22795==    by 0x804CBEA: Encode_frame (x264.c:686)
> ==22795==    by 0x804CEB9: Encode (x264.c:772)
> ==22795==    by 0x804B8CB: main (x264.c:110)
>
> All mpeg files shows the same problem, x264 is from SVN.
>
> Regards,
> ismail
> --
> アニメは本当にすごいすぎるよ !

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