#include

int my_thumb_wjh(int dummy)

{

__asm__(

"mov r0,#1 \t\n"

"mov r1,#2 \t\n"

"add r0,r0,r1 \t\n"

"bx lr"

);

return dummy;

}

int my_thumb(int dummy)

{

__asm__(

"mov r0,#13 \t\n"

"mov r1,#2 \t\n"

"add r0,r0,r1 \t\n"

"bx lr"

);

return dummy;

}

int my_thumb2(int dummy)

{

__asm(

"mov r0,#0x1\t\n"

"ldr r0,__start\t\n"

"adr r0,__start\t\n"

"ldr r0,__start\t\n"

"__start:\t\n"

"nop\t\n"

);

return dummy;

}

int data_function()

{

printf("data_function run\n");

return 1024;

}

static int my_arm(int dummy)

{

__asm__(

"mov r0,#13 \t\n"

"mov r1,#2 \t\n"

"add r0,r0,r1 \t\n"

"mov r3,#5 \t\n"

"sub r0,r0,r3 \t\n"

"mov r3,#9 \t\n"

"mul r0,r0,r3 \t\n"

"bx lr"

);

return dummy;

}

void test()

{

__asm__(

"bl data_function \t\n"

);

printf("test run\n");

}

//http://blog.csdn.net/zhangmiaoping23/article/details/44782843

//ndk内联汇编的使用之arm指令学习和调试

int main(int argc, char **argv)

{

int n = my_thumb(12);

printf("result=%d\n", n);

int result = my_thumb2(12);

printf("result=%d\n", result);

int result_my_arm = my_arm(12);

printf("result_my_arm=%d\n", result_my_arm);

test();

printf("Hello, World!\n");//Set a breakpoint here or press F10 to step into.

return 0;

}

# Generated by VisualGDB

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := arm_demo

#VisualGDBAndroid: AutoUpdateSourcesInNextLine

LOCAL_SRC_FILES := arm_demo.c

LOCAL_C_INCLUDES :=

LOCAL_STATIC_LIBRARIES :=

LOCAL_SHARED_LIBRARIES :=

LOCAL_LDLIBS :=

LOCAL_CFLAGS :=

LOCAL_CPPFLAGS :=

LOCAL_LDFLAGS :=

COMMON_SRC_FILES := $(LOCAL_SRC_FILES)

include $(BUILD_EXECUTABLE)

http://www.cnblogs.com/zenny-chen/archive/2011/11/01/2232305.html