Subversion Repositories mips32

main:
ori $s0, $zero, 24
ori $sp, $zero, 128
ori $a0, $zero, 43
addi $a1, $zero, -12
ori $a2, $zero, 51
sw $a0, 0($zero)
sw $a1, 4($zero)
sw $a2, 8($zero)
#call ADD3
jal ADD3
#save and flush the result
j OVER

ADD2:
#save the context
sw $ra, 0($sp)
addi $sp, $sp, 4
#calculate
add $v0, $a0, $a1
sw $v0, 16($zero)
#get the return address
addi $sp, $sp, -4
lw $ra, 0($sp)
jr $ra

SUB2:
#save the context
sw $ra, 0($sp)
addi $sp, $sp, 4
#calculate
sub $v0, $a0, $a1
sw $v0, 20($zero)
#get the return address
addi $sp, $sp, -4
lw $ra, 0($sp)
jr $ra


ADD3:
#save the context
sw $ra, 0($sp)
addi $sp, $sp, 4
#calculate $a0 + $a1
jal ADD2
ori $a0, $v0, 0
ori $a1, $a2, 0
jal SUB2
#get the return address
addi $sp, $sp, -4
sw $v0, 24($zero)
lw $ra, 0($sp)
jr $ra

OVER:
sw $v0, 12($zero)
lw $t0, 2048($zero)
nop
nop
nop