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6b456ffb42
This is only one half of it, the part that caches address ranges from the DIEs when .debug_aranges is not available will be ported soon. llvm-svn: 139680
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
//===-- DWARFDebugArangeSet.h -----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
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#define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
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#include "llvm/Support/DataExtractor.h"
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#include <vector>
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namespace llvm {
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class raw_ostream;
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class DWARFDebugArangeSet {
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public:
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struct Header {
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// The total length of the entries for that set, not including the length
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// field itself.
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uint32_t Length;
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// The DWARF version number.
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uint16_t Version;
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// The offset from the beginning of the .debug_info section of the
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// compilation unit entry referenced by the table.
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uint32_t CuOffset;
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// The size in bytes of an address on the target architecture. For segmented
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// addressing, this is the size of the offset portion of the address.
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uint8_t AddrSize;
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// The size in bytes of a segment descriptor on the target architecture.
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// If the target system uses a flat address space, this value is 0.
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uint8_t SegSize;
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};
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struct Descriptor {
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uint64_t Address;
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uint64_t Length;
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uint64_t getEndAddress() const { return Address + Length; }
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};
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private:
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typedef std::vector<Descriptor> DescriptorColl;
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typedef DescriptorColl::iterator DescriptorIter;
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typedef DescriptorColl::const_iterator DescriptorConstIter;
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uint32_t Offset;
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Header Header;
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DescriptorColl ArangeDescriptors;
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public:
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DWARFDebugArangeSet() { clear(); }
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void clear();
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void compact();
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bool extract(DataExtractor data, uint32_t *offset_ptr);
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void dump(raw_ostream &OS) const;
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uint32_t getCompileUnitDIEOffset() const { return Header.CuOffset; }
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uint32_t getOffsetOfNextEntry() const { return Offset + Header.Length + 4; }
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uint32_t findAddress(uint64_t address) const;
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uint32_t getNumDescriptors() const { return ArangeDescriptors.size(); }
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const struct Header &getHeader() const { return Header; }
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const Descriptor *getDescriptor(uint32_t i) const {
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if (i < ArangeDescriptors.size())
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return &ArangeDescriptors[i];
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return NULL;
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}
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};
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}
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#endif
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