| #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 s0,15 // UPPER BOUND |
| li t0,0 // COUNTER |
| li t1,0xf0040000 // BASE ADRESS |
| li t3,1 |
| addi t0,s0,0 |
| li t2,STDOUT |
| |
| LOOP: |
| |
| sw t0,0(t1) |
| sw t0,0(t2) |
| addi t2,t2,4 |
| addi t1,t1,4 |
| beqz t0,END |
| sub t0,t0,t3 |
| |
| j LOOP |
| |
| 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 |
