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Symbol prologue code checks if funciton lines up with symbol and uses function prologue code with line info if so. 

Differential Revision: http://llvm-reviews.chandlerc.com/D1082

llvm-svn: 185553
This commit is contained in:
Michael Sartain 2013-07-03 16:35:41 +00:00
parent 8490bbd16b
commit bf43d1ad26
1 changed files with 58 additions and 45 deletions
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19
lldb/source/Symbol/Symbol.cpp
View File

@ -14,6 +14,7 @@
#include "lldb/Core/Stream.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symtab.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Symbol/SymbolVendor.h"
@ -287,11 +288,22 @@ Symbol::GetPrologueByteSize ()
if (!m_type_data_resolved)
{
m_type_data_resolved = true;
ModuleSP module_sp (m_addr_range.GetBaseAddress().GetModule());
const Address &base_address = m_addr_range.GetBaseAddress();
Function *function = base_address.CalculateSymbolContextFunction();
if (function)
{
// Functions have line entries which can also potentially have end of prologue information.
// So if this symbol points to a function, use the prologue information from there.
m_type_data = function->GetPrologueByteSize();
}
else
{
ModuleSP module_sp (base_address.GetModule());
SymbolContext sc;
if (module_sp)
{
uint32_t resolved_flags = module_sp->ResolveSymbolContextForAddress (m_addr_range.GetBaseAddress(),
uint32_t resolved_flags = module_sp->ResolveSymbolContextForAddress (base_address,
eSymbolContextLineEntry,
sc);
if (resolved_flags & eSymbolContextLineEntry)
@ -300,7 +312,7 @@ Symbol::GetPrologueByteSize ()
m_type_data = sc.line_entry.range.GetByteSize();
// Set address for next line.
Address addr (m_addr_range.GetBaseAddress());
Address addr (base_address);
addr.Slide (m_type_data);
// Check the first few instructions and look for one that has a line number that is
@ -344,6 +356,7 @@ Symbol::GetPrologueByteSize ()
}
}
}
}
return m_type_data;
}
return 0;