1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# description: Kprobes event arguments with types 4# requires: kprobe_events "x8/16/32/64":README 5 6gen_event() { # Bitsize 7 echo "p:testprobe $FUNCTION_FORK \$stack0:s$1 \$stack0:u$1 \$stack0:x$1 \$stack0:b4@4/$1" 8} 9 10check_types() { # s-type u-type x-type bf-type width 11 test $# -eq 5 12 CW=$5 13 CW=$((CW / 4)) 14 X1=`printf "%x" $1 | tail -c ${CW}` 15 X2=`printf "%x" $2` 16 X3=`printf "%x" $3` 17 test $X1 = $X2 18 test $X2 = $X3 19 test 0x$X3 = $3 20 21 B4=`printf "%1x" $4` 22 B3=`printf "%03x" 0x$X3 | tail -c 2 | head -c 1` 23 test $B3 = $B4 24} 25 26for width in 64 32 16 8; do 27 : "Add new event with basic types" 28 gen_event $width > kprobe_events 29 grep testprobe kprobe_events 30 test -d events/kprobes/testprobe 31 32 : "Trace the event" 33 echo 1 > events/kprobes/testprobe/enable 34 ( echo "forked") 35 echo 0 > events/kprobes/testprobe/enable 36 37 : "Confirm the arguments is recorded in given types correctly" 38 ARGS=`grep "testprobe" trace | head -n 1 | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'` 39 check_types $ARGS $width 40 41 : "Clear event for next loop" 42 echo "-:testprobe" >> kprobe_events 43 clear_trace 44 45done 46 47exit_pass 48