| //===-- PlatformOpenBSD.cpp -----------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "PlatformOpenBSD.h" |
| #include "lldb/Host/Config.h" |
| |
| #include <cstdio> |
| #if LLDB_ENABLE_POSIX |
| #include <sys/utsname.h> |
| #endif |
| |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Host/HostInfo.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Utility/FileSpec.h" |
| #include "lldb/Utility/Log.h" |
| #include "lldb/Utility/State.h" |
| #include "lldb/Utility/Status.h" |
| #include "lldb/Utility/StreamString.h" |
| |
| // Define these constants from OpenBSD mman.h for use when targeting remote |
| // openbsd systems even when host has different values. |
| #define MAP_PRIVATE 0x0002 |
| #define MAP_ANON 0x1000 |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace lldb_private::platform_openbsd; |
| |
| LLDB_PLUGIN_DEFINE(PlatformOpenBSD) |
| |
| static uint32_t g_initialize_count = 0; |
| |
| |
| PlatformSP PlatformOpenBSD::CreateInstance(bool force, const ArchSpec *arch) { |
| Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM)); |
| LLDB_LOG(log, "force = {0}, arch=({1}, {2})", force, |
| arch ? arch->GetArchitectureName() : "<null>", |
| arch ? arch->GetTriple().getTriple() : "<null>"); |
| |
| bool create = force; |
| if (!create && arch && arch->IsValid()) { |
| const llvm::Triple &triple = arch->GetTriple(); |
| switch (triple.getOS()) { |
| case llvm::Triple::OpenBSD: |
| create = true; |
| break; |
| |
| #if defined(__OpenBSD__) |
| // Only accept "unknown" for the OS if the host is BSD and it "unknown" |
| // wasn't specified (it was just returned because it was NOT specified) |
| case llvm::Triple::OSType::UnknownOS: |
| create = !arch->TripleOSWasSpecified(); |
| break; |
| #endif |
| default: |
| break; |
| } |
| } |
| LLDB_LOG(log, "create = {0}", create); |
| if (create) { |
| return PlatformSP(new PlatformOpenBSD(false)); |
| } |
| return PlatformSP(); |
| } |
| |
| llvm::StringRef PlatformOpenBSD::GetPluginDescriptionStatic(bool is_host) { |
| if (is_host) |
| return "Local OpenBSD user platform plug-in."; |
| return "Remote OpenBSD user platform plug-in."; |
| } |
| |
| void PlatformOpenBSD::Initialize() { |
| Platform::Initialize(); |
| |
| if (g_initialize_count++ == 0) { |
| #if defined(__OpenBSD__) |
| PlatformSP default_platform_sp(new PlatformOpenBSD(true)); |
| default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture()); |
| Platform::SetHostPlatform(default_platform_sp); |
| #endif |
| PluginManager::RegisterPlugin( |
| PlatformOpenBSD::GetPluginNameStatic(false), |
| PlatformOpenBSD::GetPluginDescriptionStatic(false), |
| PlatformOpenBSD::CreateInstance, nullptr); |
| } |
| } |
| |
| void PlatformOpenBSD::Terminate() { |
| if (g_initialize_count > 0) { |
| if (--g_initialize_count == 0) { |
| PluginManager::UnregisterPlugin(PlatformOpenBSD::CreateInstance); |
| } |
| } |
| |
| PlatformPOSIX::Terminate(); |
| } |
| |
| /// Default Constructor |
| PlatformOpenBSD::PlatformOpenBSD(bool is_host) |
| : PlatformPOSIX(is_host) // This is the local host platform |
| { |
| if (is_host) { |
| m_supported_architectures.push_back(HostInfo::GetArchitecture()); |
| } else { |
| m_supported_architectures = |
| CreateArchList({llvm::Triple::x86_64, llvm::Triple::x86, |
| llvm::Triple::aarch64, llvm::Triple::arm}, |
| llvm::Triple::OpenBSD); |
| } |
| } |
| |
| std::vector<ArchSpec> PlatformOpenBSD::GetSupportedArchitectures() { |
| if (m_remote_platform_sp) |
| return m_remote_platform_sp->GetSupportedArchitectures(); |
| return m_supported_architectures; |
| } |
| |
| void PlatformOpenBSD::GetStatus(Stream &strm) { |
| Platform::GetStatus(strm); |
| |
| #if LLDB_ENABLE_POSIX |
| // Display local kernel information only when we are running in host mode. |
| // Otherwise, we would end up printing non-OpenBSD information (when running |
| // on Mac OS for example). |
| if (IsHost()) { |
| struct utsname un; |
| |
| if (uname(&un)) |
| return; |
| |
| strm.Printf(" Kernel: %s\n", un.sysname); |
| strm.Printf(" Release: %s\n", un.release); |
| strm.Printf(" Version: %s\n", un.version); |
| } |
| #endif |
| } |
| |
| // OpenBSD processes cannot yet be launched by spawning and attaching. |
| bool PlatformOpenBSD::CanDebugProcess() { |
| return false; |
| } |
| |
| void PlatformOpenBSD::CalculateTrapHandlerSymbolNames() { |
| m_trap_handlers.push_back(ConstString("_sigtramp")); |
| } |
| |
| MmapArgList PlatformOpenBSD::GetMmapArgumentList(const ArchSpec &arch, |
| addr_t addr, addr_t length, |
| unsigned prot, unsigned flags, |
| addr_t fd, addr_t offset) { |
| uint64_t flags_platform = 0; |
| |
| if (flags & eMmapFlagsPrivate) |
| flags_platform |= MAP_PRIVATE; |
| if (flags & eMmapFlagsAnon) |
| flags_platform |= MAP_ANON; |
| |
| MmapArgList args({addr, length, prot, flags_platform, fd, offset}); |
| return args; |
| } |