Table of Contents
(Continued)
Chapter 3 ARM Instruction set
Instruction Set Summay.......................................................................................................................3-1
Format Summary ........................................................................................................................3-1
Instruction Summary....................................................................................................................3-2
The Condition Field..............................................................................................................................3-4
Branch and Exchange (BX)...................................................................................................................3-5
Instruction Cycle Times................................................................................................................3-5
Assembler Syntax .......................................................................................................................3-5
Using R15 as an Operand ............................................................................................................3-5
Branch and Branch with Link (B, Bl)......................................................................................................3-7
The Link Bit ................................................................................................................................3-7
Instruction Cycle Times................................................................................................................3-7
Assembler Syntax .......................................................................................................................3-8
Data Processing..................................................................................................................................3-9
CPSR Flags................................................................................................................................3-11
Shifts .........................................................................................................................................3-12
Immediate Operand Rotates .........................................................................................................3-16
Writing to R15.............................................................................................................................3-16
Using R15 as an Operandy...........................................................................................................3-16
TEQ, TST, CMP and CMN Opcodes..............................................................................................3-16
Instruction Cycle Times................................................................................................................3-16
Assembler Syntax .......................................................................................................................3-17
Examples ...................................................................................................................................3-17
PSR Transfer (MRS, MSR)...................................................................................................................3-18
Operand Restrictions ...................................................................................................................3-18
Reserved Bits..............................................................................................................................3-20
Examples ...................................................................................................................................3-20
Instruction Cycle Times................................................................................................................3-20
Assembly Syntax ........................................................................................................................3-21
Examples ...................................................................................................................................3-21
Multiply and Multiply-Accumulate (MUL, MLA).......................................................................................3-22
CPSR Flags................................................................................................................................3-24
Instruction Cycle Times................................................................................................................3-24
Assembler Syntax .......................................................................................................................3-24
Examples ...................................................................................................................................3-24
Multiply Long and Multiply-Accumulate Long (MULL, MLAL)....................................................................3-25
Operand Restrictions ...................................................................................................................3-26
CPSR Flags................................................................................................................................3-26
Instruction Cycle Times................................................................................................................3-26
Assembler Syntax .......................................................................................................................3-27
Examples ...................................................................................................................................3-27
iv
S3C2410A MICROPROCESSOR
SAMSUNG [ SAMSUNG SEMICONDUCTOR ]
