sw/device/cheriot/buffer_overflow/buffer_overflow.cc

/*
 * Copyright 2024 Google LLC
 *
 * 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.
 */

#include <compartment.h>
#include <fail-simulator-on-error.h>

#include <debug.hh>

using Debug = ConditionalDebug<true, "Buffer overflow compartment">;

void local_function(const char* inp) {
  char b1[5] = "AAAA";
  char b2[5] = "BBBB";
  Debug::log(b1);
  Debug::log(b2);
  for (int i = 0; inp[i] != '\0' /*&& i < sizeof(b1)-1*/; i++) {
    b1[i] = inp[i];
  }
  Debug::log(b1);
  Debug::log(b2);
}

void __cheri_compartment("buffer_overflow") entry() {
  local_function("PPPPQQQQR");
}