Help/Support Quick IDA question

[BizarreClout 87]

In most games/apps i see the functions/instructions always start with 'R' like R1, R2 is that with every game/app or just some?

[Ted2 39.2k iPhone 13 Pro 16.0 Donor]

Those are called registers, they hold values.

The things before them are called instruction (example: STR R8, [R1, #0xC])

 

STR = the instruction (store)

R8 = A register that holds a value that is getting stored

R1 = a register which likely hold's a offset

#0xC = a variable that is holding a value for something

 

Together: STR (store) R8 (some value) into R1 + 0xC (offset + variable)

Updated July 26, 2018 by Ted2