43 lines
1.4 KiB
NASM
43 lines
1.4 KiB
NASM
.data
|
|
file_buff: .space 8 # A space of 2 bytes
|
|
.align 3
|
|
input_file_name: .asciiz "a.in"
|
|
.align 3
|
|
output_file_name: .asciiz "a.out"
|
|
.align 3
|
|
.text
|
|
|
|
la $a0, input_file_name
|
|
li $a1, 0 # set mode as read
|
|
li $a2, 0 # meaning nothing, really
|
|
li $v0, 13 # open file
|
|
syscall #now $v0 is the file handler
|
|
|
|
move $a0, $v0 #move file handler to a0 as first syscall arg
|
|
la $a1, file_buff
|
|
li $a2, 8 # read in 8 bytes
|
|
li $v0, 14
|
|
syscall
|
|
li $v0, 16
|
|
syscall # close file
|
|
|
|
la $a0, output_file_name
|
|
li $a1, 1 # set mode as write
|
|
li $a2, 0 # meaning nothing, really
|
|
li $v0, 13 # open file
|
|
syscall
|
|
|
|
move $a0, $v0
|
|
la $a1, file_buff
|
|
li $a2, 8 # write 8 bytes
|
|
li $v0, 15 # write file
|
|
syscall
|
|
li $v0, 16
|
|
syscall
|
|
|
|
li $v0, 5 # read integer
|
|
syscall
|
|
addi $a0, $v0, 10 # a0 = v0 + 10
|
|
li $v0, 1 # print integer
|
|
syscall
|