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Object/COFF: Expose more data in the public API.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142315 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -73,6 +73,16 @@ struct coff_relocation {
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support::ulittle16_t Type;
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};
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struct coff_aux_section_definition {
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support::ulittle32_t Length;
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support::ulittle16_t NumberOfRelocations;
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support::ulittle16_t NumberOfLinenumbers;
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support::ulittle32_t CheckSum;
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support::ulittle16_t Number;
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support::ulittle8_t Selection;
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char Unused[3];
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};
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class COFFObjectFile : public ObjectFile {
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private:
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const coff_file_header *Header;
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@ -81,11 +91,7 @@ private:
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const char *StringTable;
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uint32_t StringTableSize;
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error_code getSection(int32_t index,
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const coff_section *&Res) const;
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error_code getString(uint32_t offset, StringRef &Res) const;
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error_code getSymbol(uint32_t index,
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const coff_symbol *&Res) const;
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const coff_symbol *toSymb(DataRefImpl Symb) const;
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const coff_section *toSec(DataRefImpl Sec) const;
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@ -142,6 +148,17 @@ public:
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virtual StringRef getFileFormatName() const;
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virtual unsigned getArch() const;
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error_code getHeader(const coff_file_header *&Res) const;
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error_code getSection(int32_t index, const coff_section *&Res) const;
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error_code getSymbol(uint32_t index, const coff_symbol *&Res) const;
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template <typename T>
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error_code getAuxSymbol(uint32_t index, const T *&Res) const {
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const coff_symbol *s;
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error_code ec = getSymbol(index, s);
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Res = reinterpret_cast<const T*>(s);
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return ec;
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}
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error_code getSymbolName(const coff_symbol *symbol, StringRef &Res) const;
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static inline bool classof(const Binary *v) {
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return v->getType() == isCOFF;
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@ -98,21 +98,7 @@ error_code COFFObjectFile::getSymbolNext(DataRefImpl Symb,
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error_code COFFObjectFile::getSymbolName(DataRefImpl Symb,
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StringRef &Result) const {
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const coff_symbol *symb = toSymb(Symb);
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// Check for string table entry. First 4 bytes are 0.
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if (symb->Name.Offset.Zeroes == 0) {
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uint32_t Offset = symb->Name.Offset.Offset;
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if (error_code ec = getString(Offset, Result))
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return ec;
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return object_error::success;
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}
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if (symb->Name.ShortName[7] == 0)
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// Null terminated, let ::strlen figure out the length.
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Result = StringRef(symb->Name.ShortName);
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else
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// Not null terminated, use all 8 bytes.
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Result = StringRef(symb->Name.ShortName, 8);
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return object_error::success;
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return getSymbolName(symb, Result);
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}
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error_code COFFObjectFile::getSymbolOffset(DataRefImpl Symb,
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@ -525,6 +511,11 @@ unsigned COFFObjectFile::getArch() const {
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}
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}
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error_code COFFObjectFile::getHeader(const coff_file_header *&Res) const {
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Res = Header;
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return object_error::success;
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}
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error_code COFFObjectFile::getSection(int32_t index,
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const coff_section *&Result) const {
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// Check for special index values.
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@ -553,13 +544,32 @@ error_code COFFObjectFile::getString(uint32_t offset,
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error_code COFFObjectFile::getSymbol(uint32_t index,
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const coff_symbol *&Result) const {
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if (index > 0 && index < Header->NumberOfSymbols)
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if (index >= 0 && index < Header->NumberOfSymbols)
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Result = SymbolTable + index;
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else
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return object_error::parse_failed;
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return object_error::success;
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}
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error_code COFFObjectFile::getSymbolName(const coff_symbol *symbol,
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StringRef &Res) const {
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// Check for string table entry. First 4 bytes are 0.
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if (symbol->Name.Offset.Zeroes == 0) {
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uint32_t Offset = symbol->Name.Offset.Offset;
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if (error_code ec = getString(Offset, Res))
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return ec;
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return object_error::success;
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}
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if (symbol->Name.ShortName[7] == 0)
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// Null terminated, let ::strlen figure out the length.
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Res = StringRef(symbol->Name.ShortName);
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else
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// Not null terminated, use all 8 bytes.
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Res = StringRef(symbol->Name.ShortName, 8);
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return object_error::success;
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}
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const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
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return reinterpret_cast<const coff_relocation*>(Rel.p);
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}
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