1 .text 2 .global postmod 3postmod: 4 ldrd r0,[r1],r2 ; tricky because r1 is implied as destination 5 6 strb r12,[r12],r3 ; stores are okay 7 strd r12,[r13],r3 8 9 ldr r0,[r0],r0 ; ERROR 10 11 ldr r0,[r0,+128] ; ok 12 ldrd r12,[r13],-256 ; ERROR 13 ldrb r12,[r12],20 ; ERROR 14 strd r12,[r13],-256 ; ok 15