This alone doesn't tell the assembler which registers to add and where to put the result.
Usually, mnemonics are followed by one or more operands which are used to completely describe the instruction.Īn example mnemonic is ADD, for 'add two registers'. We saw at the end of Chapter One a few typical ARM mnemonics. Here is a typical one:įortunately, we don't have to write ARM programs using such codes. We now know what the ARM provides by way of memory and registers, and the sort of instructions to manipulate them.This chapter describes those instructions in great detail.Īs explained in the previous chapter, all ARM instructions are 32 bits long. ARM Assembly Language Programming - Chapter 3 - The Instruction Set
0 kommentar(er)
