tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc

   1 #!/bin/sh
   2 # description: Kprobes event arguments with types
   3
   4 [ -f kprobe_events ] || exit_unsupported # this is configurable
   5
   6 grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue
   7
   8 echo 0 > events/enable
   9 echo > kprobe_events
  10 enable_tracing
  11
  12 echo 'p:testprobe _do_fork $stack0:s32 $stack0:u32 $stack0:x32 $stack0:b8@4/32' > kprobe_events
  13 grep testprobe kprobe_events
  14 test -d events/kprobes/testprobe
  15
  16 echo 1 > events/kprobes/testprobe/enable
  17 ( echo "forked")
  18 echo 0 > events/kprobes/testprobe/enable
  19 ARGS=`tail -n 1 trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'`
  20
  21 check_types() {
  22   X1=`printf "%x" $1 | tail -c 8`
  23   X2=`printf "%x" $2`
  24   X3=`printf "%x" $3`
  25   test $X1 = $X2
  26   test $X2 = $X3
  27   test 0x$X3 = $3
  28
  29   B4=`printf "%02x" $4`
  30   B3=`echo -n $X3 | tail -c 3 | head -c 2`
  31   test $B3 = $B4
  32 }
  33 check_types $ARGS
  34
  35 echo "-:testprobe" >> kprobe_events
  36 clear_trace
  37 test -d events/kprobes/testprobe && exit 1 || exit 0