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-rw-r--r--lib/DebugInfo/DWARFDebugRangeList.h77
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diff --git a/lib/DebugInfo/DWARFDebugRangeList.h b/lib/DebugInfo/DWARFDebugRangeList.h
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-//===-- DWARFDebugRangeList.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_LIB_DEBUGINFO_DWARFDEBUGRANGELIST_H
-#define LLVM_LIB_DEBUGINFO_DWARFDEBUGRANGELIST_H
-
-#include "llvm/Support/DataExtractor.h"
-#include <vector>
-
-namespace llvm {
-
-class raw_ostream;
-
-/// DWARFAddressRangesVector - represents a set of absolute address ranges.
-typedef std::vector<std::pair<uint64_t, uint64_t>> DWARFAddressRangesVector;
-
-class DWARFDebugRangeList {
-public:
- struct RangeListEntry {
- // A beginning address offset. This address offset has the size of an
- // address and is relative to the applicable base address of the
- // compilation unit referencing this range list. It marks the beginning
- // of an address range.
- uint64_t StartAddress;
- // An ending address offset. This address offset again has the size of
- // an address and is relative to the applicable base address of the
- // compilation unit referencing this range list. It marks the first
- // address past the end of the address range. The ending address must
- // be greater than or equal to the beginning address.
- uint64_t EndAddress;
- // The end of any given range list is marked by an end of list entry,
- // which consists of a 0 for the beginning address offset
- // and a 0 for the ending address offset.
- bool isEndOfListEntry() const {
- return (StartAddress == 0) && (EndAddress == 0);
- }
- // A base address selection entry consists of:
- // 1. The value of the largest representable address offset
- // (for example, 0xffffffff when the size of an address is 32 bits).
- // 2. An address, which defines the appropriate base address for
- // use in interpreting the beginning and ending address offsets of
- // subsequent entries of the location list.
- bool isBaseAddressSelectionEntry(uint8_t AddressSize) const {
- assert(AddressSize == 4 || AddressSize == 8);
- if (AddressSize == 4)
- return StartAddress == -1U;
- else
- return StartAddress == -1ULL;
- }
- };
-
-private:
- // Offset in .debug_ranges section.
- uint32_t Offset;
- uint8_t AddressSize;
- std::vector<RangeListEntry> Entries;
-
-public:
- DWARFDebugRangeList() { clear(); }
- void clear();
- void dump(raw_ostream &OS) const;
- bool extract(DataExtractor data, uint32_t *offset_ptr);
- /// getAbsoluteRanges - Returns absolute address ranges defined by this range
- /// list. Has to be passed base address of the compile unit referencing this
- /// range list.
- DWARFAddressRangesVector getAbsoluteRanges(uint64_t BaseAddress) const;
-};
-
-} // namespace llvm
-
-#endif // LLVM_DEBUGINFO_DWARFDEBUGRANGELIST_H