quasar/testbench/tests/hello_world/hello_world.s

// SPDX-License-Identifier: Apache-2.0
// Copyright 2019 Western Digital Corporation or its affiliates.
//
// 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.
//

// Assembly code for Hello World
// Not using only ALU ops for creating the string


#include "defines.h"

.section .text
.global main

main:
    li x3, RV_SERIALIO
    la x4, hw_data

loop:
   lb x5, 0(x4)
   sb x5, 0(x3)
   addi x4, x4, 1
   bnez x5, loop
   ret

.data
hw_data:
.ascii "----------------------------------\n"
.ascii "Hello World from SweRV EL2 @WDC !!\n"
.ascii "----------------------------------\n"
.byte 0