llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.h

90 lines
2.7 KiB
C++

//===-- DWARFDebugRanges.h --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_DWARFDebugRanges_h_
#define liblldb_DWARFDebugRanges_h_
#include "SymbolFileDWARF.h"
#include <map>
#include <vector>
class DWARFDebugRanges
{
public:
//------------------------------------------------------------------
// Address range
//------------------------------------------------------------------
struct Range
{
Range(dw_addr_t begin = DW_INVALID_ADDRESS, dw_addr_t end = DW_INVALID_ADDRESS) :
begin_offset(begin),
end_offset(end)
{
}
void Clear()
{
begin_offset = DW_INVALID_ADDRESS;
end_offset = DW_INVALID_ADDRESS;
}
dw_addr_t begin_offset;
dw_addr_t end_offset;
typedef std::vector<Range> collection;
typedef collection::iterator iterator;
typedef collection::const_iterator const_iterator;
};
//------------------------------------------------------------------
// Collection of ranges
//------------------------------------------------------------------
struct RangeList
{
RangeList() :
ranges()
{
}
bool Extract(SymbolFileDWARF* dwarf2Data, uint32_t* offset_ptr);
bool AddRange(dw_addr_t lo_addr, dw_addr_t hi_addr);
void Clear()
{
ranges.clear();
}
dw_addr_t LowestAddress(const dw_addr_t base_addr) const;
dw_addr_t HighestAddress(const dw_addr_t base_addr) const;
void AddOffset(dw_addr_t offset);
void SubtractOffset(dw_addr_t offset);
size_t Size() const;
const Range* RangeAtIndex(size_t i) const;
const Range* Lookup(dw_addr_t offset) const;
Range::collection ranges;
};
DWARFDebugRanges();
~DWARFDebugRanges();
void Extract(SymbolFileDWARF* dwarf2Data);
static void Dump(lldb_private::Stream *s, const lldb_private::DataExtractor& debug_ranges_data, uint32_t* offset_ptr, dw_addr_t cu_base_addr);
bool FindRanges(dw_offset_t debug_ranges_offset, DWARFDebugRanges::RangeList& range_list) const;
protected:
typedef std::map<dw_offset_t, RangeList> range_map;
typedef range_map::iterator range_map_iterator;
typedef range_map::const_iterator range_map_const_iterator;
range_map m_range_map;
};
#endif // liblldb_DWARFDebugRanges_h_