3asm.s

# somehow this program need header to make it runable
# if it not have this header the program will loop forever
.text
addi t6, t6 ,1
beq  t6, x0 ,finish
addi t6, x0 ,-1

# Set value n to x10 by yourself here!
addi x10, x0, 3

# here is the original code 
# which already convert from 64-bit to 32 bit
fact:
	 addi sp,sp,-8 
	 sw   x10,4(sp)
	 sw   x1,0(sp)
	 addi x5,x10,-1
	 bge  x5,x0,L1
	 addi x10,x0,1
	 addi sp,sp,8
	 jalr x0,0(x1)
L1: addi x10,x10,-1
	 jal  x1,fact
	 addi x6,x10,0
	 lw   x1,0(sp)
	 lw   x10,4(sp)
	 addi sp,sp,8
	 mul  x10,x10,x6
	 jalr x0,0(x1)

# and this program also need to print output 
# which is store in x10
finish:
	addi t0, x10, 0
	addi    a0, x0, 1
    addi    a1, t0, 0
    ecall # print integer ecall
    addi    a0, x0, 10
    ecall # terminate ecall