1.1

1/homework/exp1/exp1_1.asm

@@ -0,0 +1,41 @@
+.data
+file_buff: .space 8 # A space of 2 bytes
+input_file_name: .asciiz "a.in"
+.align 2
+output_file_name: .asciiz "a.out"
+.align 2
+.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