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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Kprobe event char type argument
   4 # requires: kprobe_events available_filter_functions
   5
   6 case `uname -m` in
   7 x86_64)
   8   ARG1=%di
   9 ;;
  10 i[3456]86)
  11   ARG1=%ax
  12 ;;
  13 aarch64)
  14   ARG1=%x0
  15 ;;
  16 arm*)
  17   ARG1=%r0
  18 ;;
  19 ppc64*)
  20   ARG1=%r3
  21 ;;
  22 ppc*)
  23   ARG1=%r3
  24 ;;
  25 s390*)
  26   ARG1=%r2
  27 ;;
  28 mips*)
  29   ARG1=%r4
  30 ;;
  31 loongarch*)
  32   ARG1=%r4
  33 ;;
  34 riscv*)
  35   ARG1=%a0
  36 ;;
  37 *)
  38   echo "Please implement other architecture here"
  39   exit_untested
  40 esac
  41
  42 : "Test get argument (1)"
  43 if grep -q eventfs_create_dir available_filter_functions; then
  44   DIR_NAME="eventfs_create_dir"
  45 elif grep -q eventfs_add_dir available_filter_functions; then
  46   DIR_NAME="eventfs_add_dir"
  47 else
  48   DIR_NAME="tracefs_create_dir"
  49 fi
  50 echo "p:testprobe ${DIR_NAME} arg1=+0(${ARG1}):char" > kprobe_events
  51 echo 1 > events/kprobes/testprobe/enable
  52 echo "p:test $FUNCTION_FORK" >> kprobe_events
  53 grep -qe "testprobe.* arg1='t'" trace
  54
  55 echo 0 > events/kprobes/testprobe/enable
  56 : "Test get argument (2)"
  57 echo "p:testprobe ${DIR_NAME} arg1=+0(${ARG1}):char arg2=+0(${ARG1}):char[4]" > kprobe_events
  58 echo 1 > events/kprobes/testprobe/enable
  59 echo "p:test $FUNCTION_FORK" >> kprobe_events
  60 grep -qe "testprobe.* arg1='t' arg2={'t','e','s','t'}" trace