ARMSim#191

.data fileName: .asciz "integers.dat" message: .asciz "%d %d %d %d %d " .text .global _start _start: ;Initialize loop counter and other variables mov r0, #0 ; loop counter mov r1, #0 ; first integer value mov r3, #0 ; lowest integer value mov r4, #0 ; count of i mov r5, #0 ; count of integers less than i mov r6, #0 ; total count of integers ;Open file "integers.dat" mov r0, #5 ; System call number to open ldr r1, =fileName ; load filename into r1 mov r2, #0 ; open in read-only mode swi 0x66 ; execute system call to open file cmp r0, #0 ; check if file was successfully opened blt file_error ; if file descriptor is negative, there was an error opening the file loop: ; Read integer values from the file one by one ldr r2, [r0] ; read integer value from file add r6, r6, #1 ; increment total count of integers cmp r1, #0 beq first ; if this is the first integer value, set r1 to the value ; Check if the current integer is less than the lowest integer value cmp r2, r3 blt lowest ; if current value is less than lowest, set r3 to the value ; Check if the current integer is equal to the first integer value cmp r2, r1 beq count ; if current value is equal to the first integer value, increment count of i b next ; go to next iteration first: mov r1, r2 ; set first integer value to the current value b loop ; go to next iteration lowest: mov r3, r2 ; set lowest integer value to the current value add r5, r5, #1 ; increment count of integers less than i b next ; go to next iteration count: add r4, r4, #1 ; increment count of i b next ; go to next iteration next: add r0, r0, #4 ; move to next integer value in the file b loop ; go to next iteration output: ; Output the five pieces of information to the console mov r0, #1 ; System calls number to write mov r1, r1 ; first integer value mov r2, r4 ; count of i mov r3, r5 ; count of integers less than i mov r4, r3 ; integer with the lowest value mov r5, r6 ; total count mov r7, #4 ; System calls numbers to write to standard output ldr r0, =message ; message to be written to standard output swi 0x6b ; executes to write message to standard output exit: ; Exit the program swi 0x68 ; closes file mov r7, #1 ; number for exit mov r0, #0 ; exit with return code 0 swi 0x11 ; exits file_error