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55 lines
1.1 KiB
55 lines
1.1 KiB
# Simple input/output in MIIPS assembly |
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# From: http://labs.cs.upt.ro/labs/so2/html/resources/nachos-doc/mipsf.html |
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# Start .text segment (program code) |
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.text |
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.globl main |
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main: |
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# Print string msg1 |
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li $v0,4 # print_string syscall code = 4 |
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la $a0, msg1 # load the address of msg |
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syscall |
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# Get input A from user and save |
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li $v0,5 # read_int syscall code = 5 |
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syscall |
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move $t0,$v0 # syscall results returned in $v0 |
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# Print string msg2 |
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li $v0,4 # print_string syscall code = 4 |
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la $a0, msg2 # load the address of msg2 |
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syscall |
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# Get input B from user and save |
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li $v0,5 # read_int syscall code = 5 |
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syscall |
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move $t1,$v0 # syscall results returned in $v0 |
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# Math! |
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add $t0, $t0, $t1 # A = A + B |
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# Print string msg3 |
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li $v0, 4 |
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la $a0, msg3 |
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syscall |
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# Print sum |
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li $v0,1 # print_int syscall code = 1 |
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move $a0, $t0 # int to print must be loaded into $a0 |
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syscall |
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# Print \n |
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li $v0,4 # print_string syscall code = 4 |
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la $a0, newline |
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syscall |
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li $v0,10 # exit |
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syscall |
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# Start .data segment (data!) |
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.data |
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msg1: .asciiz "Enter A: " |
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msg2: .asciiz "Enter B: " |
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msg3: .asciiz "A + B = " |
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newline: .asciiz "\n"
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