一個hello程序的android內核模塊編譯方法及在模擬器中進行測試結論

compile hello.ko module Makefile code:

obj-m := hello.o
all:
make ARCH=arm EXTRA_CFLAGS="-D_CONFIG_ARM_ -fno-pic" -C $(KDIR) M=$(PWD) modules
clean:
$(MAKE) -C $(KDIR) M=$(PWD) cleanhe

Make hello.ko function:

make CROSS_COMPILE=arm-linux-androideabi- KDIR=/opt/hackandroid/goldfish_0228

NOTE: KDIR is kernel path. what's kernel path??? please refer to :http://blog.csdn.net/yygydjkthh/article/details/20172023

tested on android emulator:

run android emulator:

emulator -avd Android4.2.2 -kernel arch/arm/boot/zImage

push hello.ko to emulator:

testhello$ adb push hello.ko /data/local
60 KB/s (2648 bytes in 0.042s)

NOTE: what is zImage? How get the zImage??? please refer to : http://blog.csdn.net/yygydjkthh/article/details/20172023

testhello$ adb shell

root@android:/# cd data/local/
root@android:/data/local # ls
hello.ko

root@android:/data/local # insmod hello.ko
root@android:/data/local # dmesg -c

<1>Hello,world
root@android:/data/local # lsmod
hello 702 0 - Live 0x00000000 (PO)
root@android:/data/local # rmmod hello
root@android:/data/local # dmesg -c
<1>Goodbye, cruel world
root@android:/data/local # lsmod

root@android:/data/local #

<1>Hello,world

so, that's ok, good night :_).