ldr r0, adr_var1 @ load the memory address of var1 via label adr_var1 into R0
ldr r1, adr_var2 @ load the memory address of var2 via label adr_var2 into R1
ldr r2, [r0] @ load the value (0x03) at memory address found in R0 to register R2
str r2, [r1] @ store the value found in R2 (0x03) to the memory address found in R1