ARM ASSEMBLY Assignment (ARM7TDMI)

Consider the operations described by

if (R0 is less than R1) begin

swap(R0,R1)

end

else if (R0 equals R1) begin

R1 = -R0;

R0 = 0;

end

else begin

R1 = NOT R0;

R0 = -1;

end

PROBLEM: Use the following template to solve part 1,2

PART1: The first one is required to use unconditional instructions except branches may be conditional.

PART2: Use conditional instructions, but no branches at all.

Use the following template.

AREA FLASH, CODE, READONLY

ARM

INCLUDE LPC23xx.inc ;MMR definitions

EXPORT __main

R0VAL EQU 0x6 ; different value will be used to test your program

R1VAL EQU 0x7 ; assume that numbers are signed numbers

__main

; PART 1

MOV R0, #R0VAL ;load test case

MOV R1, #R1VAL

. . .

. . .

endpart1

; PART 2

MOV R0, #R0VAL ;load test case

MOV R1, #R1VAL

. . .

. . .

endpart2

B endpart2

END