asmith created this revision.
asmith added reviewers: zturner, llvm-commits.
Herald added subscribers: lldb-commits, abidh, mgorny, srhines.
This is intended as a first step to make lldb-server work on Windows. Follow-up
changes to implement remote capabilities in PlatformWindows, launch gdbserver,
launch/attach processes using Windows APIs etc will come in separate revisions.
The changes in this commit include the following:
- #ifdef what's not supported on Windows, for example signals
- Add a dummy 'waitpid' to the Windows PosixApi along with some definitions
that are needed for compilation.
- Setup WSAsocket connection in SystemInitializerLLGS::Initialize.
- Add a namespace to static function 'terminate()' in lldb-server.cpp because
its ambiguous with a Windows API.
- Better error handling in SocketAddress::GetAddressInfo.
- Clear the string before calling llvm::convertWideToUTF8 to avoid an
unexpected assertion.
Repository:
rLLDB LLDB
https://reviews.llvm.org/D56233
Files:
cmake/modules/LLDBConfig.cmake
include/lldb/Host/windows/PosixApi.h
include/lldb/Target/Platform.h
source/Host/common/SocketAddress.cpp
source/Host/windows/HostInfoWindows.cpp
source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
tools/lldb-server/SystemInitializerLLGS.cpp
tools/lldb-server/lldb-gdbserver.cpp
tools/lldb-server/lldb-platform.cpp
tools/lldb-server/lldb-server.cpp
Index: tools/lldb-server/lldb-server.cpp
===================================================================
--- tools/lldb-server/lldb-server.cpp
+++ tools/lldb-server/lldb-server.cpp
@@ -37,13 +37,15 @@
int main_gdbserver(int argc, char *argv[]);
int main_platform(int argc, char *argv[]);
-static void initialize() {
+namespace llsvr {
+void initialize() {
if (auto e = g_debugger_lifetime->Initialize(
llvm::make_unique<SystemInitializerLLGS>(), {}, nullptr))
llvm::consumeError(std::move(e));
}
-static void terminate() { g_debugger_lifetime->Terminate(); }
+void terminate() { g_debugger_lifetime->Terminate(); }
+} // namespace llsvr
//----------------------------------------------------------------------
// main
@@ -62,14 +64,14 @@
switch (argv[1][0]) {
case 'g':
- initialize();
+ llsvr::initialize();
main_gdbserver(argc, argv);
- terminate();
+ llsvr::terminate();
break;
case 'p':
- initialize();
+ llsvr::initialize();
main_platform(argc, argv);
- terminate();
+ llsvr::terminate();
break;
case 'v':
fprintf(stderr, "%s\n", lldb_private::GetVersion());
Index: tools/lldb-server/lldb-platform.cpp
===================================================================
--- tools/lldb-server/lldb-platform.cpp
+++ tools/lldb-server/lldb-platform.cpp
@@ -16,8 +16,9 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#if !defined(_WIN32)
#include <sys/wait.h>
-
+#endif
#include <fstream>
#include "llvm/Support/FileSystem.h"
@@ -74,6 +75,7 @@
// Watch for signals
//----------------------------------------------------------------------
static void signal_handler(int signo) {
+#if !defined(_WIN32)
switch (signo) {
case SIGHUP:
// Use SIGINT first, if that does not work, use SIGHUP as a last resort.
@@ -85,6 +87,7 @@
abort();
break;
}
+#endif
}
static void display_usage(const char *progname, const char *subcommand) {
@@ -138,8 +141,10 @@
const char *subcommand = argv[1];
argc--;
argv++;
+#if !defined(_WIN32)
signal(SIGPIPE, SIG_IGN);
signal(SIGHUP, signal_handler);
+#endif
int long_option_index = 0;
Status error;
std::string listen_host_port;
Index: tools/lldb-server/lldb-gdbserver.cpp
===================================================================
--- tools/lldb-server/lldb-gdbserver.cpp
+++ tools/lldb-server/lldb-gdbserver.cpp
@@ -525,7 +525,7 @@
handle_launch(gdb_server, argc, argv);
// Print version info.
- printf("%s-%s", LLGS_PROGRAM_NAME, LLGS_VERSION_STR);
+ printf("%s-%s\n", LLGS_PROGRAM_NAME, LLGS_VERSION_STR);
ConnectToRemote(mainloop, gdb_server, reverse_connect, host_and_port,
progname, subcommand, named_pipe_path.c_str(),
Index: tools/lldb-server/SystemInitializerLLGS.cpp
===================================================================
--- tools/lldb-server/SystemInitializerLLGS.cpp
+++ tools/lldb-server/SystemInitializerLLGS.cpp
@@ -13,6 +13,9 @@
#include "Plugins/ObjectFile/Mach-O/ObjectFileMachO.h"
using HostObjectFile = ObjectFileMachO;
#elif defined(_WIN32)
+#include "lldb/Host/windows/windows.h"
+#include <winsock2.h>
+
#include "Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.h"
using HostObjectFile = ObjectFilePECOFF;
#else
@@ -22,6 +25,8 @@
using namespace lldb_private;
+static uint32_t g_ref_count = 0;
+
llvm::Error
SystemInitializerLLGS::Initialize(const InitializerOptions &options) {
if (auto e = SystemInitializerCommon::Initialize(options))
@@ -29,10 +34,31 @@
HostObjectFile::Initialize();
+#if defined(_WIN32)
+ if (g_ref_count++ == 0) {
+ // Require Windows Sockets version 2.2.
+ auto wVersion = MAKEWORD(2, 2);
+ WSADATA wsaData;
+ auto err = WSAStartup(wVersion, &wsaData);
+ if (err == 0) {
+ // Check if the WinSock verison is what we expect.
+ if (wsaData.wVersion < wVersion) {
+ g_ref_count = 0;
+ WSACleanup();
+ }
+ } else
+ g_ref_count = 0;
+ }
+#endif
+
return llvm::Error::success();
}
void SystemInitializerLLGS::Terminate() {
+#if defined(_WIN32)
+ if (g_ref_count && --g_ref_count == 0)
+ WSACleanup();
+#endif
HostObjectFile::Terminate();
SystemInitializerCommon::Terminate();
}
Index: source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
===================================================================
--- source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
+++ source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp
@@ -38,6 +38,8 @@
#if defined(__APPLE__)
#define DEBUGSERVER_BASENAME "debugserver"
+#elif defined(_WIN32)
+#define DEBUGSERVER_BASENAME "lldb-server.exe"
#else
#define DEBUGSERVER_BASENAME "lldb-server"
#endif
Index: source/Host/windows/HostInfoWindows.cpp
===================================================================
--- source/Host/windows/HostInfoWindows.cpp
+++ source/Host/windows/HostInfoWindows.cpp
@@ -82,6 +82,7 @@
if (!::GetComputerNameW(buffer, &dwSize))
return false;
+ s.clear();
return llvm::convertWideToUTF8(buffer, s);
}
Index: source/Host/common/SocketAddress.cpp
===================================================================
--- source/Host/common/SocketAddress.cpp
+++ source/Host/common/SocketAddress.cpp
@@ -8,7 +8,7 @@
//===----------------------------------------------------------------------===//
//
// Note: This file is used on Darwin by debugserver, so it needs to remain as
-// self contained as possible, and devoid of references to LLVM unless
+// self contained as possible, and devoid of references to LLVM unless
// there is compelling reason.
//
//===----------------------------------------------------------------------===//
@@ -29,6 +29,7 @@
#include <string.h>
#include "lldb/Host/PosixApi.h"
+#include "lldb/Utility/Status.h"
// WindowsXP needs an inet_ntop implementation
#ifdef _WIN32
@@ -256,6 +257,15 @@
service_ptr = service_ptr->ai_next) {
addr_list.emplace_back(SocketAddress(service_ptr));
}
+ } else if (err) {
+ // Consume the error here.
+ Status error;
+#ifdef _WIN32
+ error.SetError(err, lldb::eErrorTypeWin32);
+#else
+ error.SetError(err, lldb::eErrorTypePOSIX);
+#endif
+ printf("SocketAddress::GetAddressInfo - %s\n", error.AsCString());
}
if (service_info_list)
Index: include/lldb/Target/Platform.h
===================================================================
--- include/lldb/Target/Platform.h
+++ include/lldb/Target/Platform.h
@@ -579,7 +579,7 @@
virtual uint64_t WriteFile(lldb::user_id_t fd, uint64_t offset,
const void *src, uint64_t src_len, Status &error) {
error.SetErrorStringWithFormat(
- "Platform::ReadFile() is not supported in the %s platform",
+ "Platform::WriteFile() is not supported in the %s platform",
GetName().GetCString());
return -1;
}
Index: include/lldb/Host/windows/PosixApi.h
===================================================================
--- include/lldb/Host/windows/PosixApi.h
+++ include/lldb/Host/windows/PosixApi.h
@@ -75,6 +75,9 @@
#endif // _MSC_VER
+#define WNOHANG 1
+#define WUNTRACED 2
+
// Various useful posix functions that are not present in Windows. We provide
// custom implementations.
int vasprintf(char **ret, const char *fmt, va_list ap);
@@ -102,4 +105,8 @@
inline pid_t fork(void) { LLVM_BUILTIN_UNREACHABLE; }
inline pid_t setsid(void) { LLVM_BUILTIN_UNREACHABLE; }
+inline pid_t waitpid(pid_t pid, int *status, int options) {
+ // To be implemented.
+ return pid_t(-1);
+}
#endif
Index: cmake/modules/LLDBConfig.cmake
===================================================================
--- cmake/modules/LLDBConfig.cmake
+++ cmake/modules/LLDBConfig.cmake
@@ -366,7 +366,7 @@
# Figure out if lldb could use lldb-server. If so, then we'll
# ensure we build lldb-server when an lldb target is being built.
-if (CMAKE_SYSTEM_NAME MATCHES "Android|Darwin|FreeBSD|Linux|NetBSD")
+if (CMAKE_SYSTEM_NAME MATCHES "Android|Darwin|FreeBSD|Linux|NetBSD|Windows")
set(LLDB_CAN_USE_LLDB_SERVER 1)
else()
set(LLDB_CAN_USE_LLDB_SERVER 0)
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