Foundations of ARM64 Linux Debugging, Disassembling, and Reversing: Analyze Code, Understand Stack Memory Usage, and Reconstruct Original C/C++ Code with ARM64

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

D. VostokovFoundations of ARM64 Linux Debugging, Disassembling, and Reversinghttps://doi.org/10.1007/978-1-4842-9082-8_6

6. Pointers to Memory

Dmitry Vostokov¹  

(1)

Dublin, Ireland

 

Pointers Revisited

The pointer is a memory cell or a register that contains the address of another memory cell. Memory pointers have their own addresses because they are memory cells too. On 32-bit Linux, pointers are 32-bit, and on 64-bit Linux, pointers are 64-bit.

Addressing Types

As we have seen in Chapter 5, memory cells can be of one byte, halfword, word, or doubleword size. Therefore, we can have a pointer to a byte, a pointer to a halfword, a pointer to a word, and a pointer ...