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//===-- 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::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;
}
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