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disable KASLR when using GDB #15

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Merged
merged 1 commit into from
May 7, 2020
Merged

disable KASLR when using GDB #15

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30 changes: 19 additions & 11 deletions boot-qemu.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -100,15 +100,18 @@ function decomp_rootfs() {

# Boot QEMU
function setup_qemu_args() {
APPEND_STRING=""
if ${INTERACTIVE:=false}; then
RDINIT=" rdinit=/bin/sh"
APPEND_RDINIT=(-append "${RDINIT}")
APPEND_STRING+="rdinit=/bin/sh "
fi
if ${GDB:=false}; then
APPEND_STRING+="nokaslr "
fi

case ${ARCH} in
arm32_v5)
ARCH=arm
QEMU_ARCH_ARGS=("${APPEND_RDINIT[@]}"
QEMU_ARCH_ARGS=(
-dtb "${KBUILD_DIR}"/arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dtb
-machine palmetto-bmc
-no-reboot)
Expand All @@ -117,7 +120,7 @@ function setup_qemu_args() {

arm32_v6)
ARCH=arm
QEMU_ARCH_ARGS=("${APPEND_RDINIT[@]}"
QEMU_ARCH_ARGS=(
-dtb "${KBUILD_DIR}"/arch/arm/boot/dts/aspeed-bmc-opp-romulus.dtb
-machine romulus-bmc
-no-reboot)
Expand All @@ -126,23 +129,25 @@ function setup_qemu_args() {

arm32_v7)
ARCH=arm
QEMU_ARCH_ARGS=(-append "console=ttyAMA0${RDINIT}"
APPEND_STRING+="console=ttyAMA0 "
QEMU_ARCH_ARGS=(
-machine virt
-no-reboot)
QEMU=(qemu-system-arm)
;;

arm64)
KIMAGE=Image.gz
QEMU_ARCH_ARGS=(-append "console=ttyAMA0${RDINIT}"
APPEND_STRING+="console=ttyAMA0 "
QEMU_ARCH_ARGS=(
-cpu cortex-a57
-machine virt)
QEMU=(qemu-system-aarch64)
;;

mips | mipsel)
KIMAGE=vmlinux
QEMU_ARCH_ARGS=("${APPEND_RDINIT[@]}"
QEMU_ARCH_ARGS=(
-cpu 24Kf
-machine malta)
QEMU=(qemu-system-"${ARCH}")
Expand All @@ -151,7 +156,8 @@ function setup_qemu_args() {

ppc32)
ARCH=powerpc
QEMU_ARCH_ARGS=(-append "console=ttyS0${RDINIT}"
APPEND_STRING+="console=ttyS0 "
QEMU_ARCH_ARGS=(
-machine bamboo
-no-reboot)
QEMU_RAM=128m
Expand All @@ -161,7 +167,7 @@ function setup_qemu_args() {
ppc64)
ARCH=powerpc
KIMAGE=vmlinux
QEMU_ARCH_ARGS=("${APPEND_RDINIT[@]}"
QEMU_ARCH_ARGS=(
-machine pseries
-vga none)
QEMU_RAM=1G
Expand All @@ -171,7 +177,7 @@ function setup_qemu_args() {
ppc64le)
ARCH=powerpc
KIMAGE=zImage.epapr
QEMU_ARCH_ARGS=("${APPEND_RDINIT[@]}"
QEMU_ARCH_ARGS=(
-device "ipmi-bmc-sim,id=bmc0"
-device "isa-ipmi-bt,bmc=bmc0,irq=10"
-L "${IMAGES_DIR}/" -bios skiboot.lid
Expand All @@ -182,7 +188,7 @@ function setup_qemu_args() {

x86 | x86_64)
KIMAGE=bzImage
QEMU_ARCH_ARGS=(-append "console=ttyS0${RDINIT}")
APPEND_STRING+="console=ttyS0 "
# Use KVM if the processor supports it (first part) and the KVM module is loaded (second part)
[[ $(grep -c -E 'vmx|svm' /proc/cpuinfo) -gt 0 && $(lsmod 2>/dev/null | grep -c kvm) -gt 0 ]] &&
QEMU_ARCH_ARGS=("${QEMU_ARCH_ARGS[@]}" -cpu host -d "unimp,guest_errors" -enable-kvm)
Expand Down Expand Up @@ -213,6 +219,7 @@ function invoke_qemu() {
# Note: no -serial mon:stdio
"${QEMU[@]}" \
"${QEMU_ARCH_ARGS[@]}" \
-append "${APPEND_STRING}" \
-display none \
-initrd "${ROOTFS}" \
-kernel "${KERNEL}" \
Expand All @@ -239,6 +246,7 @@ function invoke_qemu() {
set -x
"${QEMU[@]}" \
"${QEMU_ARCH_ARGS[@]}" \
-append "${APPEND_STRING}" \
-display none \
-initrd "${ROOTFS}" \
-kernel "${KERNEL}" \
Expand Down