Update LLDB snapshot to upstream r201577

Highlights include:

- Improvements to the remote GDB protocol client
  (r196610, r197579, r197857, r200072)

- Bug fixes for big-endian targets
  (r196808)

- Initial support for libdispatch (GCD) queues in the debuggee
  (r197190)

- Add "step-avoid-libraries" setting
  (r199943)

- IO subsystem improvements (including initial work on a curses gui)
  (r200263)

- Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
  ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

2 files changed, 49 insertions, 0 deletions

diff --git a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
index 7bdacfe..02db05b 100644
--- a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -24,6 +24,7 @@
 #include "lldb/Core/Stream.h"
 #include "lldb/Symbol/DWARFCallFrameInfo.h"
 #include "lldb/Symbol/SymbolContext.h"
+#include "lldb/Target/SectionLoadList.h"
 #include "lldb/Target/Target.h"
 #include "lldb/Host/Host.h"
 
@@ -462,6 +463,49 @@ ObjectFileELF::IsExecutable() const
     return m_header.e_entry != 0;
 }
 
+bool
+ObjectFileELF::SetLoadAddress (Target &target,
+                               lldb::addr_t value,
+                               bool value_is_offset)
+{
+    bool changed = false;
+    ModuleSP module_sp = GetModule();
+    if (module_sp)
+    {
+        size_t num_loaded_sections = 0;
+        SectionList *section_list = GetSectionList ();
+        if (section_list)
+        {
+            if (value_is_offset)
+            {
+                const size_t num_sections = section_list->GetSize();
+                size_t sect_idx = 0;
+                
+                for (sect_idx = 0; sect_idx < num_sections; ++sect_idx)
+                {
+                    // Iterate through the object file sections to find all
+                    // of the sections that have SHF_ALLOC in their flag bits.
+                    SectionSP section_sp (section_list->GetSectionAtIndex (sect_idx));
+                    // if (section_sp && !section_sp->IsThreadSpecific())
+                    if (section_sp && section_sp->Test(SHF_ALLOC))
+                    {
+                        if (target.GetSectionLoadList().SetSectionLoadAddress (section_sp, section_sp->GetFileAddress() + value))
+                            ++num_loaded_sections;
+                    }
+                }
+                changed = num_loaded_sections > 0;
+                return num_loaded_sections > 0;
+            }
+            else
+            {
+                // Not sure how to slide an ELF file given the base address
+                // of the ELF file in memory
+            }
+        }
+    }
+    return changed;
+}
+
 ByteOrder
 ObjectFileELF::GetByteOrder() const
 {
diff --git a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
index a2ab9b8..9b7c073 100644
--- a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
+++ b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
@@ -118,6 +118,11 @@ public:
     virtual bool
     ParseHeader();
 
+    virtual bool
+    SetLoadAddress (lldb_private::Target &target,
+                    lldb::addr_t value,
+                    bool value_is_offset);
+
     virtual lldb::ByteOrder
     GetByteOrder() const;