1.arm-linux内核在编译的时候需要添加: Kernel hacking->Compile the kernel with debug info
2.qemu-system-arm -M versatilepb -kernel arch/arm/boot/zImage -s -S
3.ddd --debugger arm-none-linux-gnueabi-gdb
4.gdb>file vmlinux
5.gdb>target remote :1234
6.gdb>b start_kernel
7.gdb>c