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Add comments to DWARFCompileUnit length fields/methods 

Differential revision: https://reviews.llvm.org/D40211

llvm-svn: 318626
This commit is contained in:
Jan Kratochvil 2017-11-19 14:35:07 +00:00
parent 577fa7f00f
commit d7ff94f035
1 changed files with 8 additions and 9 deletions
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17
lldb/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.h
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@ -41,26 +41,24 @@ public:
void Clear();
bool Verify(lldb_private::Stream *s) const;
void Dump(lldb_private::Stream *s) const;
// Offset of the initial length field.
dw_offset_t GetOffset() const { return m_offset; }
lldb::user_id_t GetID() const;
uint32_t Size() const {
return m_is_dwarf64 ? 23
: 11; /* Size in bytes of the compile unit header */
}
// Size in bytes of the initial length + compile unit header.
uint32_t Size() const { return m_is_dwarf64 ? 23 : 11; }
bool ContainsDIEOffset(dw_offset_t die_offset) const {
return die_offset >= GetFirstDIEOffset() &&
die_offset < GetNextCompileUnitOffset();
}
dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
dw_offset_t GetNextCompileUnitOffset() const {
return m_offset + m_length + (m_is_dwarf64 ? 12 : 4);
return m_offset + (m_is_dwarf64 ? 12 : 4) + m_length;
}
// Size of the CU data (without initial length and without header).
size_t GetDebugInfoSize() const {
return m_length + (m_is_dwarf64 ? 12 : 4) - Size(); /* Size in bytes of the
.debug_info data
associated with this
compile unit. */
return (m_is_dwarf64 ? 12 : 4) + m_length - Size();
}
// Size of the CU data incl. header but without initial length.
uint32_t GetLength() const { return m_length; }
uint16_t GetVersion() const { return m_version; }
const DWARFAbbreviationDeclarationSet *GetAbbreviations() const {
@ -175,6 +173,7 @@ protected:
// DW_TAG_subprogram
// DIEs
dw_addr_t m_base_addr;
// Offset of the initial length field.
dw_offset_t m_offset;
dw_offset_t m_length;
uint16_t m_version;