Initial commit
Initial commit.
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kntran1
204
bootloader/mcuboot/ci/fih_test_docker/fi_tester_gdb.sh
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204
bootloader/mcuboot/ci/fih_test_docker/fi_tester_gdb.sh
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#!/bin/bash
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# Copyright (c) 2020-2022 Arm Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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source $(dirname "$0")/paths.sh
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function skip_instruction {
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local SKIP_ADDRESS=$1
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local SKIP_SIZE=$2
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# Parse the ASM instruction from the address using gdb
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INSTR=$($GDB $AXF_FILE --batch -ex "disassemble $SKIP_ADDRESS" | grep "^ *$SKIP_ADDRESS" | sed "s/.*:[ \t]*\(.*\)$/\1/g")
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# Parse the C line from the address using gdb
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LINE=$($GDB $AXF_FILE --batch -ex "info line *$SKIP_ADDRESS" | sed "s/Line \([0-9]*\).*\"\(.*\)\".*/\2:\1/g")
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# Sometimes an address is in the middle of a 4 byte instruction. In that case
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# don't run the test
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if test "$INSTR" == ""; then
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return
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fi
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# Print out the meta-info about the test, in YAML
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echo "- skip_test:"
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echo " addr: $SKIP_ADDRESS"
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echo " asm: \"$INSTR\""
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echo " line: \"$LINE\""
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echo " skip: $SKIP_SIZE"
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# echo -ne "$SKIP_ADDRESS | $INSTR...\t"
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cat >commands.gdb <<EOF
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target remote localhost: 1234
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file $AXF_FILE
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b boot_go_for_image_id if image_id == 0
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continue
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delete breakpoints 1
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b *$SKIP_ADDRESS
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continue&
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eval "shell sleep 0.5"
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interrupt
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if \$pc == $SKIP_ADDRESS
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echo "Stopped at breakpoint"
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else
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echo "Failed to stop at breakpoint"
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end
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echo "PC before increase:"
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print \$pc
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set \$pc += $SKIP_SIZE
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echo "PC after increase:"
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print \$pc
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detach
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eval "shell sleep 0.5"
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EOF
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echo -n '.' 1>&2
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# start qemu, dump the serial output to $QEMU_LOG_FILE
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QEMU_LOG_FILE=qemu.log
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QEMU_PID_FILE=qemu_pid.txt
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rm -f $QEMU_PID_FILE $QEMU_LOG_FILE
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/usr/bin/qemu-system-arm \
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-M mps2-an521 \
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-s -S \
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-kernel $AXF_FILE \
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-device loader,file=$TFM_IMAGE_PATH,addr=0x10080000 \
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-chardev file,id=char0,path=$QEMU_LOG_FILE \
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-serial chardev:char0 \
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-display none \
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-pidfile $QEMU_PID_FILE \
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-daemonize
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# start qemu, skip the instruction, and continue execution
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$GDB < ./commands.gdb &>gdb_out.txt
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# kill qemu
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kill -9 `cat $QEMU_PID_FILE`
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# If "Secure image initializing" is seen the TFM booted, which means that a skip
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# managed to defeat the signature check. Write out whether the image booted or
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# not to the log in YAML
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if cat $QEMU_LOG_FILE | grep -i "Starting bootloader" &>/dev/null; then
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# bootloader started successfully
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if cat gdb_out.txt | grep -i "Stopped at breakpoint" &>/dev/null; then
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# The target was stopped at the desired address
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if cat $QEMU_LOG_FILE | grep -i "Secure image initializing" &>/dev/null; then
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echo " test_exec_ok: True"
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echo " skipped: True"
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echo " boot: True"
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#print the address that was skipped, and some context to the console
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echo "" 1>&2
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echo "Boot success: address: $SKIP_ADDRESS skipped: $SKIP_SIZE" 1>&2
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arm-none-eabi-objdump -d $AXF_FILE --start-address=$SKIP_ADDRESS -S | tail -n +7 | head -n 14 1>&2
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echo "" 1>&2
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echo "" 1>&2
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else
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LAST_LINE=`tail -n 1 $QEMU_LOG_FILE | tr -dc '[:print:]'`
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echo " test_exec_ok: True"
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echo " skipped: True"
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echo " boot: False"
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echo " last_line: \"$LAST_LINE\" "
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fi
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else
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# The target was not stopped at the desired address.
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# The most probable reason is that the instruction for that address is
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# on a call path that is not taken in this run (e.g. error handling)
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if cat $QEMU_LOG_FILE | grep -i "Secure image initializing" &>/dev/null; then
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# The image booted, although it shouldn't happen as the test is to
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# be run with a corrupt image.
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echo " test_exec_ok: False"
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echo " test_exec_fail_reason: \"No instructions were skipped (e.g. branch was not executed), but booted successfully\""
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else
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# the execution didn't stop at the address (e.g. the instruction
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# is on a branch that is not taken)
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echo " test_exec_ok: True"
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echo " skipped: False"
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fi
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fi
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else
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# failed before the first printout
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echo " test_exec_ok: True"
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echo " skipped: True"
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echo " boot: False"
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echo " last_line: 'N/A' "
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fi
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}
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# Inform how the script is used
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usage() {
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echo "$0 <image_dir> <start_addr> [<end_addr>] [(-s | --skip) <skip_len>]"
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}
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#defaults
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SKIP=2
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AXF_FILE=${BOOTLOADER_AXF_PATH}
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GDB=gdb-multiarch
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BOOTLOADER=true
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# Parse arguments
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while [[ $# -gt 0 ]]; do
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case $1 in
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-s|--skip)
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SKIP="$2"
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shift
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shift
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;;
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-h|--help)
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usage
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exit 0
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;;
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*)
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if test -z "$IMAGE_DIR"; then
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IMAGE_DIR=$1
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elif test -z "$START"; then
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START=$1
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elif test -z "$END"; then
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END=$1
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else
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usage
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exit 1
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fi
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shift
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;;
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esac
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done
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# Check that image directory, start and end address have been supplied
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if test -z "$IMAGE_DIR"; then
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usage
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exit 2
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fi
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if test -z "$START"; then
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usage
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exit 2
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fi
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if test -z "$END"; then
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END=$START
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fi
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if test -z "$SKIP"; then
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SKIP='2'
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fi
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# Create the start-end address range (step 2)
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ADDRS=$(printf '0x%x\n' $(seq "$START" 2 "$END"))
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# For each address run the skip_instruction function on it
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for ADDR in $ADDRS; do
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skip_instruction $ADDR $SKIP
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done
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