On Tue, Apr 02, 2013 at 08:38:18PM +0200, Lars Hammarstrand wrote: > 2013/4/2 Carl Eugen Hoyos <ceho...@ag.or.at> > > > Lars Hammarstrand <lars.hammarstrand@...> writes: > > > > > (gdb) disass $pc-32,$pc+32 > > > > Please add the register dump, some developers can > > see the problem if it is present. > > > > > > Complete trace: > $ *uname -a* > Darwin Lars-iPhone-4 11.0.0 Darwin Kernel Version 11.0.0: Sun Apr 8 > 21:51:26 PDT 2012; root:xnu-1878.11.10~1/RELEASE_ARM_S5L8930X iPhone3,1 arm > N90AP Darwin > > $ *gdb ffmpeg* > GNU gdb 6.3.50-20050815 (Apple version gdb-1821) (Fri Jun 29 08:41:41 UTC > 2012) > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "arm-apple-darwin"...Reading symbols for shared > libraries . done > > (gdb) *r ffmpeg -i > http://techslides.com/demos/sample-videos/small.mp4-acodec copy > -vcodec copy output.mp4 > * > Starting program: /ffmpeg-n1.2/ffmpeg ffmpeg -i > http://techslides.com/demos/sample-videos/small.mp4 -acodec copy -vcodec > copy output.mp4 > Reading symbols for shared libraries ......................... done > > Program received signal EXC_BAD_INSTRUCTION, Illegal instruction/operand. > ff_pred8x8_128_dc_neon () at h264pred_neon.S:405 > Line number 405 out of range; h264pred_neon.S has 359 lines. > > (gdb) *bt* > #0 ff_pred8x8_128_dc_neon () at h264pred_neon.S:405 > #1 0x003fc75a in hl_decode_mb_simple_8 (h=0x0) at h264_mb_template.c:161 > #2 0x003fdad8 in ff_h264_hl_decode_mb (h=<value temporarily unavailable, > due to optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:2415 > #3 0x00401da4 in decode_slice (avctx=<value temporarily unavailable, due > to optimizations>, arg=<value temporarily unavailable, due to > optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:4266 > #4 0x00402380 in execute_decode_slices () at > /ffmpeg-n1.2/libavcodec/h264.c:4355 > #5 0x00402dec in decode_nal_units (h=0xf00000, buf=0xd25484 "", > buf_size=4207149, parse_extradata=0) at /ffmpeg-n1.2/libavcodec/h264.c:4699 > #6 0x004033d6 in decode_frame (avctx=0x13b5a00, data=0x0, > got_frame=0x2fdfef84, avpkt=<value temporarily unavailable, due to > optimizations>) at /ffmpeg-n1.2/libavcodec/h264.c:4811 > #7 0x003247ce in avcodec_decode_video2 (avctx=0x13b5a00, picture=0xe4bb40, > got_picture_ptr=0x10, avpkt=0x2fdfef20) at > /ffmpeg-n1.2/libavcodec/utils.c:1690 > #8 0x00067c16 in try_decode_frame (st=0xe4ad30, avpkt=<value temporarily > unavailable, due to optimizations>, options=0x0) at > /ffmpeg-n1.2/libavformat/utils.c:2514 > #9 0x0006c468 in avformat_find_stream_info (ic=0xd18004, > options=0x2fe25a14) at /ffmpeg-n1.2/libavformat/utils.c:2946 > #10 0x00004448 in open_input_file (o=0x2fdff36c, filename=<value > temporarily unavailable, due to optimizations>) at > /ffmpeg-n1.2/ffmpeg_opt.c:786 > #11 0x00003de8 in open_files (l=0x0, inout=0x0, open_file=0x5f5944 > <groups>) at /ffmpeg-n1.2/ffmpeg_opt.c:2307 > #12 0x00004058 in ffmpeg_parse_options (argc=<value temporarily > unavailable, due to optimizations>, argv=<value temporarily unavailable, > due to optimizations>) at /ffmpeg-n1.2/ffmpeg_opt.c:2344 > #13 0x00010c30 in main (argc=<value temporarily unavailable, due to > optimizations>, argv=<value temporarily unavailable, due to optimizations>) > at /ffmpeg-n1.2/ffmpeg.c:3317 > Current language: auto; currently asm > > (gdb) *disass $pc-32,$pc+32* > Dump of assembler code for function ff_pred8x8_top_dc_neon: > 0x00398b74 <ff_pred8x8_top_dc_neon+0>: andeq lr, r1, #163840 ; 0x28000 > 0x00398b78 <ff_pred8x8_top_dc_neon+4>: ldreq pc, [pc, -r2, lsr #18] > 0x00398b7c <ff_pred8x8_top_dc_neon+8>: addeq pc, r0, #704 ; 0x2c0 > 0x00398b80 <ff_pred8x8_top_dc_neon+12>: bleq 0x7d47c8 <noise_table+2408> > 0x00398b84 <ff_pred8x8_top_dc_neon+16>: ldmdaeq r0, {r1, r2, r3, r7, r8, > r9, r10, r11, sp, lr, pc}^ > 0x00398b88 <ff_pred8x8_top_dc_neon+20>: stcne 15, cr15, [r0], {179} > 0x00398b8c <ff_pred8x8_top_dc_neon+24>: stceq 15, cr15, [r0], {177} > 0x00398b90 <ff_pred8x8_top_dc_neon+28>: strheq pc, [r1], r10 > 0x00398b94 <ff_pred8x8_top_dc_neon+32>: svclt 0x0000e04a > End of assembler dump. > > (gdb) *info all-registers* [...]
> pc 0x398b6c 3771244 iam not an arm expert but the address pc is at doesnt seem to be part of the disassembly [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Democracy is the form of government in which you can choose your dictator
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