1 files changed, 90 insertions, 0 deletions
diff --git a/base/Factorial.s b/base/Factorial.s
new file mode 100644
index 0000000..ee0830b
--- /dev/null
+++ b/base/Factorial.s
@@ -0,0 +1,90 @@
+.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"