android内核调试

0x1:内核编译

下载源码：

$git clone https://android.googlesource.com/kernel/goldfish.git

$git branch -a

$git checkout remotes/origin/archive/android-gldfish-3.4

环境变量准备：

export PATH=$NDK_PATH/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin:$PATH

export ARCH=arm

export SUBARCH=arm

export CROSS_COMPILE=arm-eabi-

make goldfish_armv7_defconfig

内核config选项：

CONFIG_DEBUG_KERNEL=y 打开这个选项后，vmlinux 才有符号
CONFIG_KGDB=y 开启kgdb

编译内核：

make ARCH=arm CROSS_COMPILE=$NDK_PATH/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- all

0x2:内核调试

emulator -no-window -no-audio -verbose -show-kernel -kernel goldfish/arch/arm/boot/zImage -memory 2048 -qemu -s -S

默认的调试端口为1234.

arm-linux-androideabi-gdb goldfish/vmlinux

连接方法：

target remote:1234

c

自动连接进入调试。