Introduction to ARM Assembly Language and Keil uVision5
Objective of this lab:
To explore ARM archetecture and Keil uVision5
Preparation
Read lab lecture notes.
Lab Assignment
Write your first ARM assembly language program MyFirstARM.s.
The program will execute the following instructions. You will
run the program step by step, observe and answer the question after each statement.
MOV R2, #0x01 ; R2 = ? MOV R3, #0x02 ; R3 = ? ;Other examples to move immediate values MOV R5, #0x3210 ; R5 = ? MOVT R5, #0x7654 ; R5 = ? MOV32 R6, #0x87654321 ; R6 = ? LDR R7, = 0x87654321 ; R7 = ? ADD R1,R2,R3 ; R1 = ? MOV32 R3, #0xFFFFFFFF ; R3 = ? ADDS R1,R2,R3 ; R1 = ? ; specify Condition Code updates in CPSR SUBS R1,R2,R3 ; R1 = ? ; specify Condition Code updates in CPSR MOV R4, #0xFFFFFFFF ; R4 = ? ADD R1,R2,R4 ; R1 = ? ; How did that operation affect the flags (Condition Codes) in CPSR? ADDS R1,R2,R4 ; R1 = ? ; Please specify Condition Code updates ; and now what happened to the flags (Condition Codes) in the CPSR? MOV R2, #0x00000002 ; R2 = ? ADDS R1,R2,R4 ; R1 = ? ; again, what happened to the flags? MOV R2, #0x00000001 ; R2 = ? MOV R3, #0x00000002 ; R3 = ? ADDS R1,R2,R3 ; R1 = ? ; Add some small numbers again ; and check the flags again...... ; Add numbers that will create an overflow MOV R2, #0x7FFFFFFF ; R2 = ? MOV R3, #0x7FFFFFFF ; R3 = ? ADDS R1,R2,R3 ; R1 = ? ; Check the flags in the CPSR?
You will hand in the following:
- The source code in the file MyFirstARM.s with the answers.
- The .pdf file MyFirstARM.pdf contains the following:
- The screenshot of the program succefully built in Keil uVision.
- The source code in the file MyFirstARM.s with the answers.
Copyright: Department of Computer Science, University of Regina.