1 files changed, 287 insertions, 0 deletions
diff --git a/unittests/tools/lldb-server/tests/TestClient.cpp b/unittests/tools/lldb-server/tests/TestClient.cpp
new file mode 100644
index 000000000..540d79790
--- /dev/null
+++ b/unittests/tools/lldb-server/tests/TestClient.cpp
@@ -0,0 +1,287 @@
+//===-- TestClient.cpp ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "TestClient.h"
+#include "lldb/Core/ArchSpec.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Host/common/TCPSocket.h"
+#include "lldb/Host/posix/ConnectionFileDescriptorPosix.h"
+#include "lldb/Host/posix/ProcessLauncherPosix.h"
+#include "lldb/Interpreter/Args.h"
+#include "lldb/Target/ProcessLaunchInfo.h"
+#include "llvm/ADT/StringExtras.h"
+#include "gtest/gtest.h"
+#include <cstdlib>
+#include <future>
+#include <sstream>
+#include <string>
+
+using namespace lldb;
+using namespace lldb_private;
+using namespace llvm;
+
+namespace llgs_tests {
+void TestClient::Initialize() { HostInfo::Initialize(); }
+
+TestClient::TestClient(const std::string &test_name,
+                       const std::string &test_case_name)
+    : m_test_name(test_name), m_test_case_name(test_case_name),
+      m_pc_register(UINT_MAX) {}
+
+TestClient::~TestClient() {}
+
+bool TestClient::StartDebugger() {
+  const ArchSpec &arch_spec = HostInfo::GetArchitecture();
+  Args args;
+  args.AppendArgument(LLDB_SERVER);
+  args.AppendArgument("gdbserver");
+  args.AppendArgument("--log-channels=gdb-remote packets");
+  args.AppendArgument("--reverse-connect");
+  std::string log_file_name = GenerateLogFileName(arch_spec);
+  if (log_file_name.size()) {
+    args.AppendArgument("--log-file=" + log_file_name);
+  }
+
+  Status error;
+  TCPSocket listen_socket(true, false);
+  error = listen_socket.Listen("127.0.0.1:0", 5);
+  if (error.Fail()) {
+    GTEST_LOG_(ERROR) << "Unable to open listen socket.";
+    return false;
+  }
+
+  char connect_remote_address[64];
+  snprintf(connect_remote_address, sizeof(connect_remote_address),
+           "localhost:%u", listen_socket.GetLocalPortNumber());
+
+  args.AppendArgument(connect_remote_address);
+
+  m_server_process_info.SetArchitecture(arch_spec);
+  m_server_process_info.SetArguments(args, true);
+  Status status = Host::LaunchProcess(m_server_process_info);
+  if (status.Fail()) {
+    GTEST_LOG_(ERROR)
+        << formatv("Failure to launch lldb server: {0}.", status).str();
+    return false;
+  }
+
+  char connect_remote_uri[64];
+  snprintf(connect_remote_uri, sizeof(connect_remote_uri), "connect://%s",
+           connect_remote_address);
+  Socket *accept_socket;
+  listen_socket.Accept(accept_socket);
+  SetConnection(new ConnectionFileDescriptor(accept_socket));
+
+  SendAck(); // Send this as a handshake.
+  return true;
+}
+
+bool TestClient::StopDebugger() {
+  std::string response;
+  return SendMessage("k", response, PacketResult::ErrorDisconnected);
+}
+
+bool TestClient::SetInferior(llvm::ArrayRef<std::string> inferior_args) {
+  std::stringstream command;
+  command << "A";
+  for (size_t i = 0; i < inferior_args.size(); i++) {
+    if (i > 0)
+      command << ',';
+    std::string hex_encoded = toHex(inferior_args[i]);
+    command << hex_encoded.size() << ',' << i << ',' << hex_encoded;
+  }
+
+  if (!SendMessage(command.str()))
+    return false;
+  if (!SendMessage("qLaunchSuccess"))
+    return false;
+  std::string response;
+  if (!SendMessage("qProcessInfo", response))
+    return false;
+  auto create_or_error = ProcessInfo::Create(response);
+  if (auto create_error = create_or_error.takeError()) {
+    GTEST_LOG_(ERROR) << toString(std::move(create_error));
+    return false;
+  }
+
+  m_process_info = *create_or_error;
+  return true;
+}
+
+bool TestClient::ListThreadsInStopReply() {
+  return SendMessage("QListThreadsInStopReply");
+}
+
+bool TestClient::SetBreakpoint(unsigned long address) {
+  std::stringstream command;
+  command << "Z0," << std::hex << address << ",1";
+  return SendMessage(command.str());
+}
+
+bool TestClient::ContinueAll() { return Continue("vCont;c"); }
+
+bool TestClient::ContinueThread(unsigned long thread_id) {
+  return Continue(formatv("vCont;c:{0:x-}", thread_id).str());
+}
+
+const ProcessInfo &TestClient::GetProcessInfo() { return *m_process_info; }
+
+Optional<JThreadsInfo> TestClient::GetJThreadsInfo() {
+  std::string response;
+  if (!SendMessage("jThreadsInfo", response))
+    return llvm::None;
+  auto creation = JThreadsInfo::Create(response, m_process_info->GetEndian());
+  if (auto create_error = creation.takeError()) {
+    GTEST_LOG_(ERROR) << toString(std::move(create_error));
+    return llvm::None;
+  }
+
+  return std::move(*creation);
+}
+
+const StopReply &TestClient::GetLatestStopReply() {
+  return m_stop_reply.getValue();
+}
+
+bool TestClient::SendMessage(StringRef message) {
+  std::string dummy_string;
+  return SendMessage(message, dummy_string);
+}
+
+bool TestClient::SendMessage(StringRef message, std::string &response_string) {
+  if (!SendMessage(message, response_string, PacketResult::Success))
+    return false;
+  else if (response_string[0] == 'E') {
+    GTEST_LOG_(ERROR) << "Error " << response_string
+                      << " while sending message: " << message.str();
+    return false;
+  }
+
+  return true;
+}
+
+bool TestClient::SendMessage(StringRef message, std::string &response_string,
+                             PacketResult expected_result) {
+  StringExtractorGDBRemote response;
+  GTEST_LOG_(INFO) << "Send Packet: " << message.str();
+  PacketResult result = SendPacketAndWaitForResponse(message, response, false);
+  response.GetEscapedBinaryData(response_string);
+  GTEST_LOG_(INFO) << "Read Packet: " << response_string;
+  if (result != expected_result) {
+    GTEST_LOG_(ERROR) << FormatFailedResult(message, result);
+    return false;
+  }
+
+  return true;
+}
+
+unsigned int TestClient::GetPcRegisterId() {
+  if (m_pc_register != UINT_MAX)
+    return m_pc_register;
+
+  for (unsigned int register_id = 0;; register_id++) {
+    std::string message = formatv("qRegisterInfo{0:x-}", register_id).str();
+    std::string response;
+    if (!SendMessage(message, response)) {
+      GTEST_LOG_(ERROR) << "Unable to query register ID for PC register.";
+      return UINT_MAX;
+    }
+
+    auto elements_or_error = SplitPairList("GetPcRegisterId", response);
+    if (auto split_error = elements_or_error.takeError()) {
+      GTEST_LOG_(ERROR) << "GetPcRegisterId: Error splitting response: "
+                        << response;
+      return UINT_MAX;
+    }
+
+    auto elements = *elements_or_error;
+    if (elements["alt-name"] == "pc" || elements["generic"] == "pc") {
+      m_pc_register = register_id;
+      break;
+    }
+  }
+
+  return m_pc_register;
+}
+
+bool TestClient::Continue(StringRef message) {
+  if (!m_process_info.hasValue()) {
+    GTEST_LOG_(ERROR) << "Continue() called before m_process_info initialized.";
+    return false;
+  }
+
+  std::string response;
+  if (!SendMessage(message, response))
+    return false;
+  auto creation = StopReply::Create(response, m_process_info->GetEndian());
+  if (auto create_error = creation.takeError()) {
+    GTEST_LOG_(ERROR) << toString(std::move(create_error));
+    return false;
+  }
+
+  m_stop_reply = std::move(*creation);
+  return true;
+}
+
+std::string TestClient::GenerateLogFileName(const ArchSpec &arch) const {
+  char *log_directory = getenv("LOG_FILE_DIRECTORY");
+  if (!log_directory)
+    return "";
+
+  if (!llvm::sys::fs::is_directory(log_directory)) {
+    GTEST_LOG_(WARNING) << "Cannot access log directory: " << log_directory;
+    return "";
+  }
+
+  std::string log_file_name;
+  raw_string_ostream log_file(log_file_name);
+  log_file << log_directory << "/lldb-" << m_test_case_name << '-'
+           << m_test_name << '-' << arch.GetArchitectureName() << ".log";
+  return log_file.str();
+}
+
+std::string TestClient::FormatFailedResult(const std::string &message,
+                                           PacketResult result) {
+  std::string formatted_error;
+  raw_string_ostream error_stream(formatted_error);
+  error_stream << "Failure sending message: " << message << " Result: ";
+
+  switch (result) {
+  case PacketResult::ErrorSendFailed:
+    error_stream << "ErrorSendFailed";
+    break;
+  case PacketResult::ErrorSendAck:
+    error_stream << "ErrorSendAck";
+    break;
+  case PacketResult::ErrorReplyFailed:
+    error_stream << "ErrorReplyFailed";
+    break;
+  case PacketResult::ErrorReplyTimeout:
+    error_stream << "ErrorReplyTimeout";
+    break;
+  case PacketResult::ErrorReplyInvalid:
+    error_stream << "ErrorReplyInvalid";
+    break;
+  case PacketResult::ErrorReplyAck:
+    error_stream << "ErrorReplyAck";
+    break;
+  case PacketResult::ErrorDisconnected:
+    error_stream << "ErrorDisconnected";
+    break;
+  case PacketResult::ErrorNoSequenceLock:
+    error_stream << "ErrorNoSequenceLock";
+    break;
+  default:
+    error_stream << "Unknown Error";
+  }
+
+  error_stream.str();
+  return formatted_error;
+}
+} // namespace llgs_tests