MIPS assembly language learning-03-cycle

One 、 Preface

How to run on a computer MIPS assembly language , I won't repeat it here , Please refer to the previous blog link , There are related installation packages and operation methods ：MIPS Assembly language learning -01- Sum of two numbers

Two 、 Source code

# Function realization ：
# Realization 1 Add up to 10000, Finally, print the cumulative result 

.text
# according to C We define two variables to Sum,i,MaxValue.
# Now let's use $t0 : Sum, $t1 : i, $t2 : MaxValue Three registers for correspondence .
li $t0, 0
li $t1, 1
li $t2, 10000

# Now customize a label WhileLoop To execute the code in the loop body .
# What needs to be implemented is ：Sum = Sum + i; i = i + 1;
WhileLoop:
add $t0, $t0, $t1
add $t1, $t1, 1
# This way IF Judge the condition ,i <= 100.
#ble The function of the function is to realize less than or equal to , Three parameters ：
# The first parameter value is less than or equal to the second parameter value , Execute the tag of the third parameter .
# The first parameter value is less than or equal to the second parameter value , The third parameter label is not executed , Go straight down .
ble $t1, $t2, WhileLoop

# End of cycle print results 
# The method of printing integers was described in the previous chapter , You can look through .
li $v0, 1
move $a0, $t0
syscall

This time the code comments have been written , I will not take out a chapter to explain it , Actually, it's a lazy thief .

3、 ... and 、 Running effect