1 .section .text 2 .global _fun 3xc16x_sub: 4 5 sub r0,r1 6 sub r0,[r1] 7 sub r0,[r1+] 8 sub r0,#0x1 9 sub r0,#0x7643 10 sub r0,0x7643 11 sub 0x7643,r0 12 13 14 15 16 17 18 19