compile assembly code

armcc , armasm, armlink가 있으면 arm 32bit명령어 컴파일이 가능

--- main.c

#include <stdio.h>

int square(int i) ;

int main ()

{

int i ;

for (i=0 ; i < 10 ; i++)

{

printf ("Square of %d is %d\n", i, square(i));

}

exit (0);

}

--- square.s

AREA |.text|, CODE, READONLY

EXPORT square

; int square (int i)

square

MUL r1, r0, r0 ; r1 = r0 * r0

MOV r0, r1 ; r0 = r1

MOR pc, lr ; r0를 리턴

END

---compile

armcc -c main1.c

armasm square.s

armlink -o main.axf main1.o square.o

만약 Thumb 코드라면

--- square.s

AREA |.text|, CODE, READONLY

EXPORT square

; int square (int i)

square

MUL r1, r0, r0 ; r1 = r0 * r0

MOV r0, r1 ; r0 = r1

BX lr ; r0를 리턴

END

--- complie

tcc -c main1.c

armasm -apcs / interwork square2.s

armlink -o main2.axf main1.o square2.o