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//===-- DWARFDebugArangeSet.h -----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
#define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
#include "llvm/Support/DataExtractor.h"
#include <vector>
namespace llvm {
class raw_ostream;
class DWARFDebugArangeSet {
public:
struct Header {
// The total length of the entries for that set, not including the length
// field itself.
uint32_t Length;
// The offset from the beginning of the .debug_info section of the
// compilation unit entry referenced by the table.
uint32_t CuOffset;
// The DWARF version number.
uint16_t Version;
// The size in bytes of an address on the target architecture. For segmented
// addressing, this is the size of the offset portion of the address.
uint8_t AddrSize;
// The size in bytes of a segment descriptor on the target architecture.
// If the target system uses a flat address space, this value is 0.
uint8_t SegSize;
};
struct Descriptor {
uint64_t Address;
uint64_t Length;
uint64_t getEndAddress() const { return Address + Length; }
};
private:
typedef std::vector<Descriptor> DescriptorColl;
typedef DescriptorColl::iterator DescriptorIter;
typedef DescriptorColl::const_iterator DescriptorConstIter;
uint32_t Offset;
Header HeaderData;
DescriptorColl ArangeDescriptors;
public:
DWARFDebugArangeSet() { clear(); }
void clear();
void compact();
bool extract(DataExtractor data, uint32_t *offset_ptr);
void dump(raw_ostream &OS) const;
uint32_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; }
uint32_t getOffsetOfNextEntry() const { return Offset + HeaderData.Length + 4; }
uint32_t findAddress(uint64_t address) const;
uint32_t getNumDescriptors() const { return ArangeDescriptors.size(); }
const struct Header &getHeader() const { return HeaderData; }
const Descriptor *getDescriptor(uint32_t i) const {
if (i < ArangeDescriptors.size())
return &ArangeDescriptors[i];
return NULL;
}
};
}
#endif
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