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

[İsmail Dönmez]

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
-- 
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