| // SPDX-FileCopyrightText: 2020 Efabless Corporation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| // SQ_root of number |
| #include "defines.h" |
| |
| #define STDOUT 0xd0580000 |
| |
| |
| // Code to execute |
| .section .text |
| .global _start |
| _start: |
| |
| |
| csrw minstret, zero |
| csrw minstreth, zero |
| |
| li x4, 4 // Neccessary for terminating code |
| csrw 0x7f9 ,x4 // Neccessary for terminating code |
| |
| li x8, 0xf0040000 // dccm address |
| li x3, STDOUT // axi address |
| li x13, 0 // initial value |
| li x12, 25 // sqrt number |
| addi x6, x0, 0 // counter |
| li x11, 200 |
| |
| |
| sq_root: |
| addi x6, x6, 1 |
| mul x9, x6, x6 |
| beq x11, x6, _finish |
| bne x12, x9, sq_root |
| sw x6, 0(x8) |
| sw x6, 0(x3) |
| |
| // 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 |