ARM Software reference manual

Contents
1. Architectural description
1
1.1 Introduction
1
1.2 Programmer's model
1
1.2.1 Memory organisation
2
1.3 Registers
2
1.4 Modes
4
1.4.1 Mode 0
5
1.4.2 Mode 1
5
1.4.3 Mode 2
5
1.4.4 Mode 3
6
2. Instruction set
7
2.1 Branch and branch with link
7
2.1.1 Assembler syntax 9
2.2 Data processing 9
2.2.1 Data processing on registers
13
22.2 Data processing with register and immediate operand 16
2.2.3 Changing modes.
17
2.3 Single data transfer group
18
2.3.1 [Rn, off] is a pre-indexing addressing mode
20
2.3.2 [Rn,Rm] is a pre-indexed addressing mode 20
233 [Rn],off is a post-indexed addressing mode
20
2.3.4 [Rn],Rm is a post-indexed addressing mode
21
2.4 Block data transfer
22
2.4.1 Assembler syntax
24
2.5 Supervisor calls
25
3. Interrupts
27
3.1 Reset
27
3.2 Address exception trap
28
3.3 Abort
28
3.4 FIQ
29
3.5 IRQ
30
3.6 Undefined instruction trap 30
3.7 Software interrupt
30
4. Appendix A 32
4.1 Instruction speeds
32
5. Appendix B
34
iv ARM software