RT Thread浮点运算崩溃

DEVICE = ' -Wall -mcpu=cortex-a9 -mfpu=vfpv3 -ftree-vectorize -mfloat-abi=hard -ffunction-sections -munaligned-access -ffast-math'
    CFLAGS = DEVICE
    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
    LINK_SCRIPT = 'zynq7000.ld'
    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=zynq7000.map,-cref,-u,system_vectors -T %s' % LINK_SCRIPT
    CPATH = ''
    LPATH = ''
    if BUILD == 'debug':
        CFLAGS += ' -O0 -gdwarf-2'
        AFLAGS += ' -gdwarf-2'
    else:
        CFLAGS += ' -O2'
    CFLAGS += ' -O2'