bt
#0  0x04030200 in ?? ()
#1  <signal handler called>
#2  0x00000000 in ?? ()
#3  0x00000000 in ?? ()

info reg
r0             0x0  0
r1             0x0  0
r2             0x0  0
r3             0x0  0
r4             0x0  0
r5             0x0  0
r6             0x0  0
r7             0x0  0
r8             0x0  0
r9             0x0  0
r10            0x0  0
r11            0x0  0
r12            0x0  0
sp             0xa0379e0    0xa0379e0
lr             0xfffffff9   4294967289
pc             0x4030200    0x4030200
xpsr           0x41000003   1090519043

x/16xw $sp
0xa0379e0:  0x00000000  0x00000000  0x00000000  0x00000000
0xa0379f0:  0x00000000  0x00000000  0x00000000  0x00000000
0xa037a00:  0x00000000  0x00000000  0x00000000  0x00000000
0xa037a10:  0x00000000  0x00000000  0x00000000  0x00000000