어 셈 블 리 에서 printf 호출

/*********************      printf*****************/
/**********************  uboot go              **************************/
//         :http://blog.csdn.net/oyhb_1992/article/details/77822900
#define printf 0x43e11ad0   //uboot printf    

.global _start
_start:
	//printf("%c 0x%x %d
" , 'Y' , 0x12345678 , 98765432);
	mov r4 , lr  //   push {lr}
	ldr r0 , =arg  //   printf    4   
	mov r1 , #'Y'
	ldr r2 , =0x12345678
	ldr r3 , =98765432
	
	mov lr , pc 
	mov pc , =printf
	
	mov lr , r4  //   pop {pc}  //  uboot
arg:
	.asciz "%c 0x%x %d
"  //z   ‘0’