[Discuss-gnuradio] Build problem on E100

[Nowlan, Sean]

For some reason the ARM Assembler doesn’t like the NEON instructions in dotprod_fff_armv7_a.c:

 

[   9%]  Building C object gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/dotprod_fff_armv7_a.c.o

/tmp/ccAcWVL4.s: 27: Error: bad instruction `vmov.f32 q8,#0.0’

/tmp/ccAcWVL4.s: 28: Error: bad instruction `vmov.f32 q9,#0.0’

/tmp/ccAcWVL4.s: 31: Error: bad instruction `vldl.32 {d0,d1,d2,d3},[r3]!’

/tmp/ccAcWVL4.s: 32: Error: bad instruction `vldl.32 {d4,d5,d6,d7},[r1]!’

/tmp/ccAcWVL4.s: 33: Error: bad instruction `vmla.f32 q8,q0,q2’

/tmp/ccAcWVL4.s: 34: Error: bad instruction `vmla.f32 q9,q1,q3’

/tmp/ccAcWVL4.s: 36: Error: bad instruction `vadd.f32 q8,q8,q9’

/tmp/ccAcWVL4.s: 37: Error: bad instruction `vpadd.f32 d0,d16,d17’

/tmp/ccAcWVL4.s: 38: Error: bad instruction `vadd.f32 s16,s0,s1’

make[2]:  ***  [gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/dotprod_fff_armv7_a.c.o]  Error 1

make[1]:  ***  [gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/all]  Error 2

make:  ***  [all] Error 2

 

My cmake command was as follows:

 

$ cmake -DCMAKE_TOOLCHAIN_DIR=../cmake/Toolchains/arm_cortex_a8_native.cmake -DENABLE_GRC=OFF -DENABLE_GR_QTGUI=OFF -DQT_QTCORE_INCLUDE_DIR=/usr/include/qt4/QtCore -DQT_QTGUI_INCLUDE_DIR=/usr/include/qt4/QtGui ../

 

And the CC and CXX FLAGS in arm_cortex_a8_native.cmake were: “-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -ftree-vectorize -fsingle-precision-constant”

 

I also tried without “-ftree-vectorize -fsingle-precision-constant” to similar effect.

 

This is using a gnuradio build I pulled less than 6 hours ago. Can anybody else with an E100 reproduce this error?

 

Thanks,

Sean

 

 

 

 

 

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