blob: 0c126a175ed1e943336ab3b614b993ebe7a25fc5 [file] [log] [blame]
#include "defines.h"
#define STDOUT 0xd0580000
// Code to execute
.section .text
.global _start
_start:
//Prime numbers in a given range
// li x1, 0x5f555555
// csrw 0x7c0, x1
csrw minstret, zero
csrw minstreth, zero
li x4, 4 // Neccessary for terminating code
csrw 0x7f9 ,x4 // Neccessary for terminating code
nop
li s0,0 // count of divisors
li s1,1 // minimun range INPUT Expected result = 1 3 5 7 11 13
li s2,15 // maximum range INPUT
li t1,1 // divider
li t2,2
li t5,1
li t3,0xf0040000 //base adress
li t4,STDOUT
beq s1,t5,STORE
LOOP2:
addi s1,s1,2
li t5,0
LOOP:
beq s1,s2,END
rem t0,s1,t1
beqz t0,INC
addi t1,t1,1
beq t1,s1,LOOP1
j LOOP
INC:
addi s0,s0,1
addi t1,t1,1
beq t1,s1,LOOP1
j LOOP
LOOP1:
addi s0,s0,1
beq s0,t2,STORE
li t1,1
li s0,0
addi s1,s1,1
j LOOP
STORE:
sw s1,0(t3)
sw s1,0(t4)
addi t3,t3,4
addi t4,t4,4
beq s1,t5,LOOP2
bne s1,s2,LOOP1
END:
// Write 0xff to STDOUT for TB to termiate test.
_finish:
li x3, STDOUT
addi x5, x0, 0xff
sb x5, 0(x3)
beq x0, x0, _finish
.rept 100
nop
.endr