example/samples/arm_simple.S
main:
STMFD SP!, {R4, R5, LR}
MOV R0, mystr & 0xffff
ORR R0, R0, mystr & 0xffff0000
MOV R4, R0
MOV R1, mystrend & 0xffff
ORR R1, R1, mystrend & 0xffff0000
xxx:
LDRB R2, [PC, key-$]
loop:
LDRB R3, [R0]
EOR R3, R3, R2
STRB R3, [R0], 1
CMP R0, R1
BNE loop
end:
MOV R0, R4
LDMFD SP!, {R4, R5, PC}
key:
.byte 0x11
mystr:
.string "test string"
mystrend:
.long 0