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Add support for the DWARFLocationList used by split-dwarf
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Split-dwarf uses a different header format to specify the address range
for the elements of the location lists.

Differential revision: http://reviews.llvm.org/D12880

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@247789 91177308-0d34-0410-b5e6-96231b3b80d8
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Tamas Berghammer committed Sep 16, 2015
1 parent 2ed6731 commit f560ebe
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Showing 14 changed files with 397 additions and 606 deletions.
33 changes: 32 additions & 1 deletion include/lldb/Expression/DWARFExpression.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,13 @@ class ClangExpressionVariableList;
class DWARFExpression
{
public:
enum LocationListFormat : uint8_t
{
NonLocationList, // Not a location list
RegularLocationList, // Location list format used in non-split dwarf files
SplitDwarfLocationList, // Location list format used in split dwarf files
};

//------------------------------------------------------------------
/// Constructor
//------------------------------------------------------------------
Expand Down Expand Up @@ -401,6 +408,24 @@ class DWARFExpression
lldb::addr_t address,
ABI *abi);

static size_t
LocationListSize(const DWARFCompileUnit* dwarf_cu,
const DataExtractor& debug_loc_data,
lldb::offset_t offset);

static bool
PrintDWARFExpression(Stream &s,
const DataExtractor& data,
int address_size,
int dwarf_ref_size,
bool location_expression);

static void
PrintDWARFLocationList(Stream &s,
const DWARFCompileUnit* cu,
const DataExtractor& debug_loc_data,
lldb::offset_t offset);

protected:
//------------------------------------------------------------------
/// Pretty-prints the location expression to a stream
Expand Down Expand Up @@ -434,6 +459,13 @@ class DWARFExpression
lldb::offset_t &offset,
lldb::offset_t &len);

static bool
AddressRangeForLocationListEntry(const DWARFCompileUnit* dwarf_cu,
const DataExtractor& debug_loc_data,
lldb::offset_t* offset_ptr,
lldb::addr_t& low_pc,
lldb::addr_t& high_pc);

//------------------------------------------------------------------
/// Classes that inherit from DWARFExpression can see and modify these
//------------------------------------------------------------------
Expand All @@ -447,7 +479,6 @@ class DWARFExpression
lldb::addr_t m_loclist_slide; ///< A value used to slide the location list offsets so that
///< they are relative to the object that owns the location list
///< (the function for frame base and variable location lists)

};

} // namespace lldb_private
Expand Down
44 changes: 16 additions & 28 deletions lldb.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -460,8 +460,6 @@
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Expand Down Expand Up @@ -744,15 +742,15 @@
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Expand All @@ -767,13 +765,13 @@
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Expand Down Expand Up @@ -1264,10 +1262,6 @@
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Expand Down Expand Up @@ -3187,10 +3181,6 @@
260C89D210F57C5600BB2B04 /* DWARFDIECollection.h */,
260C89D310F57C5600BB2B04 /* DWARFFormValue.cpp */,
260C89D410F57C5600BB2B04 /* DWARFFormValue.h */,
260C89D510F57C5600BB2B04 /* DWARFLocationDescription.cpp */,
260C89D610F57C5600BB2B04 /* DWARFLocationDescription.h */,
260C89D710F57C5600BB2B04 /* DWARFLocationList.cpp */,
260C89D810F57C5600BB2B04 /* DWARFLocationList.h */,
26A0DA4D140F721D006DA411 /* HashedNameToDIE.h */,
26109B3B1155D70100CC3529 /* LogChannelDWARF.cpp */,
26109B3C1155D70100CC3529 /* LogChannelDWARF.h */,
Expand Down Expand Up @@ -6424,9 +6414,7 @@
3FDFE53119A292F0009756A7 /* HostInfoPosix.cpp in Sources */,
233B007D1960C9F90090E598 /* ProcessInfo.cpp in Sources */,
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26BC17B118C7F4CB00D2196D /* ThreadElfCore.cpp in Sources */,
268900C813353E5F00698AC0 /* DWARFLocationList.cpp in Sources */,
268900C913353E5F00698AC0 /* NameToDIE.cpp in Sources */,
268900CA13353E5F00698AC0 /* SymbolFileDWARF.cpp in Sources */,
268900CB13353E5F00698AC0 /* LogChannelDWARF.cpp in Sources */,
Expand Down
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