... r4,r4,r3 sub r1,r1,#1 B loop exit mov r0,r4; chuyen S -> r0 pop {r3,r4,r5,lr} bx lr endp end cau 6: Vi t chương trình tính tổng giai thừa từ o > 10 AREA mycode,CODE,READONLY EXPORT main ALIGN ENTRY ... loop LDRB r1,[r0],#1 cmp r1,#0 BEQ exit add r2,r2,#1 B loop exit mov r0,r2 bx lr endp end câu 14: vi t đệ qui main.s AREA codene,CODE,READONLY EXPORT main IMPORT recursive ALIGN ENTRY main PROC...