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#!/bin/bash
# Copyright (c) 2012 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
set -o nounset
set -o errexit
#@ Various commands to emulate arm code using qemu
#@
#@ Note: this script is not meant to be run as
#@ tools/trusted_cross_toolchains/qemu_tool_arm.sh
#@ but rather as:
#@ toolchain/linux_x86/arm_trusted/qemu_tool_arm.sh
# From a qemu build based on qemu-0.10.1.tar.gz
readonly SDK_ROOT=$(dirname $0)
readonly QEMU=${SDK_ROOT}/qemu-arm
readonly QEMU_STOCK=/usr/bin/qemu-arm
readonly QEMU_JAIL=${SDK_ROOT}
# Hook for adding stuff like timeout wrappers
readonly QEMU_PREFIX_HOOK=${QEMU_PREFIX_HOOK:-}
# NOTE: some useful debugging options for qemu:
# env vars:
# QEMU_STRACE=1
# args:
# -strace
# -d out_asm,in_asm,op,int,exec,cpu
# c.f. cpu_log_items in qemu-XXX/exec.c
readonly QEMU_ARGS="-cpu cortex-a9"
readonly QEMU_ARGS_DEBUG="-d in_asm,int,exec,cpu"
readonly QEMU_ARGS_DEBUG_SR="-d in_asm,int,exec,cpu,service_runtime"
######################################################################
# Helpers
######################################################################
Banner() {
echo "######################################################################"
echo $*
echo "######################################################################"
}
Usage() {
egrep "^#@" $0 | cut --bytes=3-
}
CheckPrerequisites () {
if [[ ! -d ${QEMU_JAIL} ]] ; then
echo "ERROR: no proper root-jail directory found"
exit -1
fi
}
Hints() {
echo
echo "traces can be found in /tmp/qemu.log"
echo "for faster execution disable sel_ldr validation"
echo
}
######################################################################
#@
#@ help
#@
#@ print help for all modes
help () {
Usage
}
#@
#@ run
#@
#@ run emulation using a locally patched qemu
run() {
CheckPrerequisites
exec ${QEMU_PREFIX_HOOK} ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} "$@"
}
#@
#@ run_stock
#@
#@ run emulation using the stock qemu
run_stock() {
exec ${QEMU_PREFIX_HOOK} ${QEMU_STOCK} -L ${QEMU_JAIL} ${QEMU_ARGS} "$@"
}
#@
#@ run_debug
#@
#@ run emulation but also generate trace in /tmp
run_debug() {
Hints
CheckPrerequisites
exec ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} ${QEMU_ARGS_DEBUG} "$@"
}
#@
#@ run_debug_service_runtime
#@
#@ run emulation but also generate trace in /tmp even for service_runtime
run_debug_service_runtime() {
Hints
CheckPrerequisites
exec ${QEMU} -L ${QEMU_JAIL} ${QEMU_ARGS} ${QEMU_ARGS_DEBUG_SR} "$@"
}
#@
#@ install_stock
#@
#@ install stock qemu emulator (for user mode)
install_stock_qemu() {
sudo apt-get install qemu-user
}
######################################################################
if [[ "$0" == *run_under_qemu_arm ]] ; then
run "$@"
elif [[ $# -eq 0 ]] ; then
echo "you must specify a mode on the commandline:"
echo
Usage
exit -1
elif [[ "$(type -t $1)" != "function" ]]; then
echo "ERROR: unknown function '$1'." >&2
echo "For help, try:"
echo " $0 help"
exit 1
else
"$@"
fi
|
