[Buildroot] mpg123 segfaults on A8 (imx53)

Arnout Vandecappelle arnout at mind.be
Tue Oct 30 23:04:37 UTC 2012


On 10/30/12 11:08, Sagaert Johan wrote:
> So i had a look at the configuration options and i think it might have something to do the the option  --with-cpu not
> being correct..

  arm_nofpu should work for any ARM processor...

> I tried :
> MPG123_CPU = neon
> But the build fails:
> ....
> dct64_neon_float.S:125: Error: selected processor does not support ARM mode `vmul.f32 q7,q11,q14'
> dct64_neon_float.S:127: Error: selected processor does not support ARM mode `vdup.32 q12,d31[0]'
> dct64_neon_float.S:128: Error: selected processor does not support ARM mode `vmov d31,d30'
> dct64_neon_float.S:130: Error: selected processor does not support ARM mode `vsw
> ....

  Depending on how the toolchain is compiled, you may need to add
-mfloat-abi=softfp -mfpu=neon or -mfloat-abi=hard -mfpu=neon to the CFLAGS
to get neon support.

  But I doubt that that's the issue - illegal instructions give SIGILL, not
SIGSEGV.  So your only option is to debug mpg123 with gdbserver or valgrind.

  Regards,
  Arnout

-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
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