/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * 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 <signal.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <memory>

#include <gtest/gtest.h>

#include <unwindstack/Regs.h>

#include "ForkTest.h"
#include "PidUtils.h"

namespace unwindstack {

class RegsRemoteTest : public ForkTest {
 protected:
  void SetUp() override { Fork(); }
};

TEST_F(RegsRemoteTest, remote_get) {
  std::unique_ptr<Regs> regs(Regs::RemoteGet(pid_));
#if defined(__arm__)
  ASSERT_EQ(ARCH_ARM, regs->Arch());
#elif defined(__aarch64__)
  ASSERT_EQ(ARCH_ARM64, regs->Arch());
#elif defined(__i386__)
  ASSERT_EQ(ARCH_X86, regs->Arch());
#elif defined(__x86_64__)
  ASSERT_EQ(ARCH_X86_64, regs->Arch());
#elif defined(__riscv)
  ASSERT_EQ(ARCH_RISCV64, regs->Arch());
#else
  ASSERT_EQ(nullptr, regs.get());
#endif
}

TEST_F(RegsRemoteTest, remote_get_ptrace_fails) {
  ErrorCode error_code;
  // Use our own pid since that will always fail.
  std::unique_ptr<Regs> regs(Regs::RemoteGet(getpid(), &error_code));
  ASSERT_TRUE(regs == nullptr);
  ASSERT_EQ(ERROR_PTRACE_CALL, error_code);
}

TEST_F(RegsRemoteTest, remote_get_arch) {
#if defined(__arm__)
  ASSERT_EQ(ARCH_ARM, Regs::RemoteGetArch(pid_));
#elif defined(__aarch64__)
  ASSERT_EQ(ARCH_ARM64, Regs::RemoteGetArch(pid_));
#elif defined(__i386__)
  ASSERT_EQ(ARCH_X86, Regs::RemoteGetArch(pid_));
#elif defined(__x86_64__)
  ASSERT_EQ(ARCH_X86_64, Regs::RemoteGetArch(pid_));
#elif defined(__riscv)
  ASSERT_EQ(ARCH_RISCV64, Regs::RemoteGetArch(pid_));
#else
  ASSERT_EQ(ARCH_NONE, Regs::RemoteGetArch(pid_));
#endif
}

TEST_F(RegsRemoteTest, remote_get_arch_ptrace_fails) {
  ErrorCode error_code;
  // Use our own pid since that will always fail.
  ASSERT_EQ(ARCH_UNKNOWN, Regs::RemoteGetArch(getpid(), &error_code));
  ASSERT_EQ(ERROR_PTRACE_CALL, error_code);
}

}  // namespace unwindstack