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.data
vmt_Fac:
Fac.ComputeFac
.text
jal Main
li $v0 10
syscall
Main:
sw $fp -8($sp)
move $fp $sp
subu $sp $sp 8
sw $ra -4($fp)
li $a0 4
jal _heapAlloc
move $t0 $v0
la $t9 vmt_Fac
sw $t9 0($t0)
bnez $t0 null1
la $a0 _str0
j _error
null1:
lw $t1 0($t0)
lw $t1 0($t1)
move $a0 $t0
li $a1 10
jalr $t1
move $t1 $v0
move $a0 $t1
jal _print
lw $ra -4($fp)
lw $fp -8($fp)
addu $sp $sp 8
jr $ra
Fac.ComputeFac:
sw $fp -8($sp)
move $fp $sp
subu $sp $sp 12
sw $ra -4($fp)
sw $s0 0($sp)
move $t0 $a0
move $s0 $a1
slti $t1 $s0 1
beqz $t1 if1_else
li $t1 1
j if1_end
if1_else:
lw $t2 0($t0)
lw $t2 0($t2)
subu $t3 $s0 1
move $a0 $t0
move $a1 $t3
jalr $t2
move $t3 $v0
mul $t1 $s0 $t3
if1_end:
move $v0 $t1
lw $s0 0($sp)
lw $ra -4($fp)
lw $fp -8($fp)
addu $sp $sp 12
jr $ra
_print:
li $v0 1 # syscall: print integer
syscall
la $a0 _newline
li $v0 4 # syscall: print string
syscall
jr $ra
_error:
li $v0 4 # syscall: print string
syscall
li $v0 10 # syscall: exit
syscall
_heapAlloc:
li $v0 9 # syscall: sbrk
syscall
jr $ra
.data
.align 0
_newline: .asciiz "\n"
_str0: .asciiz "null pointer\n"
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