| //===-- ItaniumABILanguageRuntime.cpp --------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ItaniumABILanguageRuntime.h" |
| |
| #include "lldb/Breakpoint/BreakpointLocation.h" |
| #include "lldb/Core/ConstString.h" |
| #include "lldb/Core/Error.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/Scalar.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StopInfo.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| |
| #include <vector> |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static const char *pluginName = "ItaniumABILanguageRuntime"; |
| static const char *pluginDesc = "Itanium ABI for the C++ language"; |
| static const char *pluginShort = "language.itanium"; |
| |
| lldb::ValueObjectSP |
| ItaniumABILanguageRuntime::GetDynamicValue (ValueObjectSP in_value, ExecutionContextScope *exe_scope) |
| { |
| ValueObjectSP ret_sp; |
| return ret_sp; |
| } |
| |
| bool |
| ItaniumABILanguageRuntime::IsVTableName (const char *name) |
| { |
| if (name == NULL) |
| return false; |
| |
| // Can we maybe ask Clang about this? |
| if (strstr (name, "_vptr$") == name) |
| return true; |
| else |
| return false; |
| } |
| |
| //------------------------------------------------------------------ |
| // Static Functions |
| //------------------------------------------------------------------ |
| lldb_private::LanguageRuntime * |
| ItaniumABILanguageRuntime::CreateInstance (Process *process, lldb::LanguageType language) |
| { |
| // FIXME: We have to check the process and make sure we actually know that this process supports |
| // the Itanium ABI. |
| if (language == eLanguageTypeC_plus_plus) |
| return new ItaniumABILanguageRuntime (process); |
| else |
| return NULL; |
| } |
| |
| void |
| ItaniumABILanguageRuntime::Initialize() |
| { |
| PluginManager::RegisterPlugin (pluginName, |
| pluginDesc, |
| CreateInstance); |
| } |
| |
| void |
| ItaniumABILanguageRuntime::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| const char * |
| ItaniumABILanguageRuntime::GetPluginName() |
| { |
| return pluginName; |
| } |
| |
| const char * |
| ItaniumABILanguageRuntime::GetShortPluginName() |
| { |
| return pluginShort; |
| } |
| |
| uint32_t |
| ItaniumABILanguageRuntime::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| void |
| ItaniumABILanguageRuntime::GetPluginCommandHelp (const char *command, Stream *strm) |
| { |
| } |
| |
| Error |
| ItaniumABILanguageRuntime::ExecutePluginCommand (Args &command, Stream *strm) |
| { |
| Error error; |
| error.SetErrorString("No plug-in command are currently supported."); |
| return error; |
| } |
| |
| Log * |
| ItaniumABILanguageRuntime::EnablePluginLogging (Stream *strm, Args &command) |
| { |
| return NULL; |
| } |
| |
| void |
| ItaniumABILanguageRuntime::SetExceptionBreakpoints () |
| { |
| if (!m_process) |
| return; |
| |
| if (!m_cxx_exception_bp_sp) |
| m_cxx_exception_bp_sp = m_process->GetTarget().CreateBreakpoint (NULL, |
| "__cxa_throw", |
| eFunctionNameTypeBase, |
| true); |
| |
| if (!m_cxx_exception_alloc_bp_sp) |
| m_cxx_exception_alloc_bp_sp = m_process->GetTarget().CreateBreakpoint (NULL, |
| "__cxa_allocate", |
| eFunctionNameTypeBase, |
| true); |
| } |
| |
| void |
| ItaniumABILanguageRuntime::ClearExceptionBreakpoints () |
| { |
| if (!m_process) |
| return; |
| |
| if (m_cxx_exception_bp_sp.get()) |
| { |
| m_process->GetTarget().RemoveBreakpointByID(m_cxx_exception_bp_sp->GetID()); |
| m_cxx_exception_bp_sp.reset(); |
| } |
| |
| if (m_cxx_exception_alloc_bp_sp.get()) |
| { |
| m_process->GetTarget().RemoveBreakpointByID(m_cxx_exception_alloc_bp_sp->GetID()); |
| m_cxx_exception_bp_sp.reset(); |
| } |
| } |
| |
| bool |
| ItaniumABILanguageRuntime::ExceptionBreakpointsExplainStop (lldb::StopInfoSP stop_reason) |
| { |
| if (!m_process) |
| return false; |
| |
| if (!stop_reason || |
| stop_reason->GetStopReason() != eStopReasonBreakpoint) |
| return false; |
| |
| uint64_t break_site_id = stop_reason->GetValue(); |
| lldb::BreakpointSiteSP bp_site_sp = m_process->GetBreakpointSiteList().FindByID(break_site_id); |
| |
| if (!bp_site_sp) |
| return false; |
| |
| uint32_t num_owners = bp_site_sp->GetNumberOfOwners(); |
| |
| bool check_cxx_exception = false; |
| break_id_t cxx_exception_bid; |
| |
| bool check_cxx_exception_alloc = false; |
| break_id_t cxx_exception_alloc_bid; |
| |
| if (m_cxx_exception_bp_sp) |
| { |
| check_cxx_exception = true; |
| cxx_exception_bid = m_cxx_exception_bp_sp->GetID(); |
| } |
| |
| if (m_cxx_exception_alloc_bp_sp) |
| { |
| check_cxx_exception_alloc = true; |
| cxx_exception_alloc_bid = m_cxx_exception_alloc_bp_sp->GetID(); |
| } |
| |
| for (uint32_t i = 0; i < num_owners; i++) |
| { |
| break_id_t bid = bp_site_sp->GetOwnerAtIndex(i)->GetBreakpoint().GetID(); |
| |
| if ((check_cxx_exception && (bid == cxx_exception_bid)) || |
| (check_cxx_exception_alloc && (bid == cxx_exception_alloc_bid))) |
| return true; |
| } |
| |
| return false; |
| } |