forked from Github_Repos/cvw
73 lines
2.6 KiB
ArmAsm
73 lines
2.6 KiB
ArmAsm
///////////////////////////////////////////
|
|
// ieu.S
|
|
//
|
|
// Written: David_Harris@hmc.edu 21 March 2023
|
|
//
|
|
// Purpose: Test coverage for IEU
|
|
//
|
|
// A component of the CORE-V-WALLY configurable RISC-V project.
|
|
//
|
|
// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
|
|
//
|
|
// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
|
|
// except in compliance with the License, or, at your option, the Apache License version 2.0. You
|
|
// may obtain a copy of the License at
|
|
//
|
|
// https://solderpad.org/licenses/SHL-2.1/
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, any work 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.
|
|
////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// load code to initalize stack, handle interrupts, terminate
|
|
#include "WALLY-init-lib.h"
|
|
|
|
main:
|
|
|
|
# Division test (having trouble with buildroot)
|
|
li x11, 0x384000
|
|
li x12, 0x1c2000
|
|
divuw x9, x11, x12
|
|
|
|
# Test clz with all bits being 0
|
|
li t0, 0
|
|
clz t1, t0
|
|
li t0, -1
|
|
clz t1, t0
|
|
li t0, 1
|
|
clz t1, t0
|
|
|
|
# Test forwarding from store conditional
|
|
mv a0, sp
|
|
lr.w t0, 0(a0)
|
|
sc.w t0, a1, 0(a0)
|
|
addi t0, t0, 1
|
|
|
|
# Test illegal instructions are detected
|
|
.word 0x80000033 // illegal R-type instruction
|
|
.word 0x00007003 // illegal Load instruction
|
|
.word 0x80005013 // illegal I-type instruction: srli: op = 0010011, funct3 = 101, funct7 = 1000000
|
|
.word 0x00000000 // illegal instruction
|
|
.word 0x0000701B // Illegal IW instruction
|
|
.word 0x00004023 // Illegal store instruction
|
|
.word 0x0400003B // Illegal RW or MulDivW instruction
|
|
.word 0x00007067 // Illegal JALR instruction
|
|
.word 0x00002063 // Illegal branch instruction
|
|
.word 0x60F01013 // Illegal BMU sign extend / count instruction
|
|
.word 0x60801013 // Illegal BMU sign extend / count instruction
|
|
.word 0x60301013 // Illegal BMU sign extend / count instruction
|
|
.word 0x6BF05013 // Illegal BMU similar to rev8
|
|
.word 0x69805013 // Illegal BMU similar to rev8
|
|
.word 0x28F05013 // Illegal BMU similar to or.c
|
|
.word 0x60F0101B // Illegal BMU similar to count word
|
|
.word 0x6080101B // Illegal BMU similar to count word
|
|
.word 0x6030101B // Illegal BMU similar to count word
|
|
|
|
|
|
j done
|
|
|