caio/clang-p2996
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Add a method "GetEntryPoint" to the ObjectFile class, and implement it on MachO & ELF - though the ELF implementation is probably a little weak. Then use this method in place of directly looking for "start" in the ThreadPlanCallFunction constructor to find the stopping point for our function evaluation.

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llvm-svn: 127194
This commit is contained in:
Jim Ingham
2011-03-07 23:44:08 +00:00
parent 77ad1dc56d
commit 672e6f59c5
6 changed files with 205 additions and 10 deletions
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28
lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
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@@ -16,9 +16,11 @@
#include "lldb/Core/DataBuffer.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/FileSpecList.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/Stream.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Host/Host.h"
#define CASE_AND_STREAM(s, def, width) \
@@ -276,6 +278,32 @@ ObjectFileELF::GetImageInfoAddress()
return Address();
}
lldb_private::Address
ObjectFileELF::GetEntryPointAddress ()
{
// If the object file is not an executable it can't hold the entry point. m_entry_point_address
// is initialized to an invalid address, so we can just return that.
// If m_entry_point_address is valid it means we've found it already, so return the cached value.
if (!IsExecutable() || m_entry_point_address.IsValid())
return m_entry_point_address;
// FIXME: This is just looking for the "start" symbol, but that will fail if "start" is stripped.
// There's probably a better way in ELF to find the start address of an executable module.
SymbolContextList contexts;
SymbolContext context;
if (!m_module->FindSymbolsWithNameAndType(ConstString ("start"), lldb::eSymbolTypeCode, contexts))
return m_entry_point_address;
contexts.GetContextAtIndex(0, context);
m_entry_point_address = context.symbol->GetValue();
return m_entry_point_address;
}
//----------------------------------------------------------------------
// ParseDependentModules
//----------------------------------------------------------------------