Arm compilation – (1) How ARM processors are addressed

By:ailson Jack.

date:2016.04.13

Personal blog: www.only2fire.com

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The addressing method is based on the address Code field given in the instruction to find the real operand address. The ARM processor has 9 basic addressing options:

1), register addressing 2), register shift addressing 3), register indirect addressing

4), multi-register addressing 5), immediate addressing 6), base address addressing

7), stack addressing 8), block copy addressing 9), relative addressing

1. Register addressing

The value of the operand is stored in the register, and the Address Code field in the instruction indicates the register number, which can be manipulated by taking the value stored in the register directly when the instruction executes. Examples of register addressing directives are:

MOV r1,r2; R2 value is stored in R1

SUB r0,r1,r2; Subtracts the value of R1 by the value of R2 and saves the result to R0

2. Register Shift Addressing

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