/// the object writer to modify the assembler data structures at appropriate
/// points. Once assembly is complete, the object writer is given the
/// MCAssembler instance, which contains all the symbol and section data which
-/// should be emitted as part of WriteObject().
+/// should be emitted as part of writeObject().
///
/// The object writer also contains a number of helper methods for writing
/// binary data to the output stream.
MCObjectWriter(const MCObjectWriter &) = delete;
void operator=(const MCObjectWriter &) = delete;
-protected:
- raw_pwrite_stream &OS;
+ raw_pwrite_stream *OS;
+protected:
unsigned IsLittleEndian : 1;
protected: // Can only create subclasses.
MCObjectWriter(raw_pwrite_stream &OS, bool IsLittleEndian)
- : OS(OS), IsLittleEndian(IsLittleEndian) {}
+ : OS(&OS), IsLittleEndian(IsLittleEndian) {}
+
+ unsigned getInitialOffset() {
+ return OS->tell();
+ }
public:
virtual ~MCObjectWriter();
bool isLittleEndian() const { return IsLittleEndian; }
- raw_ostream &getStream() { return OS; }
+ raw_pwrite_stream &getStream() { return *OS; }
+ void setStream(raw_pwrite_stream &NewOS) { OS = &NewOS; }
/// \name High-Level API
/// @{
///
/// This routine is called by the assembler after layout and relaxation is
/// complete.
- virtual void ExecutePostLayoutBinding(MCAssembler &Asm,
+ virtual void executePostLayoutBinding(MCAssembler &Asm,
const MCAsmLayout &Layout) = 0;
/// Record a relocation entry.
/// This routine is called by the assembler after layout and relaxation, and
/// post layout binding. The implementation is responsible for storing
/// information about the relocation so that it can be emitted during
- /// WriteObject().
- virtual void RecordRelocation(MCAssembler &Asm, const MCAsmLayout &Layout,
+ /// writeObject().
+ virtual void recordRelocation(MCAssembler &Asm, const MCAsmLayout &Layout,
const MCFragment *Fragment,
const MCFixup &Fixup, MCValue Target,
bool &IsPCRel, uint64_t &FixedValue) = 0;
///
/// Clients are not required to answer precisely and may conservatively return
/// false, even when a difference is fully resolved.
- bool IsSymbolRefDifferenceFullyResolved(const MCAssembler &Asm,
+ bool isSymbolRefDifferenceFullyResolved(const MCAssembler &Asm,
const MCSymbolRefExpr *A,
const MCSymbolRefExpr *B,
bool InSet) const;
- virtual bool IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
+ virtual bool isSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
+ const MCSymbol &A,
+ const MCSymbol &B,
+ bool InSet) const;
+
+ virtual bool isSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
const MCSymbol &SymA,
const MCFragment &FB,
bool InSet,
/// This routine is called by the assembler after layout and relaxation is
/// complete, fixups have been evaluated and applied, and relocations
/// generated.
- virtual void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout) = 0;
+ virtual void writeObject(MCAssembler &Asm, const MCAsmLayout &Layout) = 0;
/// @}
/// \name Binary Output
/// @{
- void Write8(uint8_t Value) { OS << char(Value); }
+ void write8(uint8_t Value) { *OS << char(Value); }
- void WriteLE16(uint16_t Value) {
- support::endian::Writer<support::little>(OS).write(Value);
+ void writeLE16(uint16_t Value) {
+ support::endian::Writer<support::little>(*OS).write(Value);
}
- void WriteLE32(uint32_t Value) {
- support::endian::Writer<support::little>(OS).write(Value);
+ void writeLE32(uint32_t Value) {
+ support::endian::Writer<support::little>(*OS).write(Value);
}
- void WriteLE64(uint64_t Value) {
- support::endian::Writer<support::little>(OS).write(Value);
+ void writeLE64(uint64_t Value) {
+ support::endian::Writer<support::little>(*OS).write(Value);
}
- void WriteBE16(uint16_t Value) {
- support::endian::Writer<support::big>(OS).write(Value);
+ void writeBE16(uint16_t Value) {
+ support::endian::Writer<support::big>(*OS).write(Value);
}
- void WriteBE32(uint32_t Value) {
- support::endian::Writer<support::big>(OS).write(Value);
+ void writeBE32(uint32_t Value) {
+ support::endian::Writer<support::big>(*OS).write(Value);
}
- void WriteBE64(uint64_t Value) {
- support::endian::Writer<support::big>(OS).write(Value);
+ void writeBE64(uint64_t Value) {
+ support::endian::Writer<support::big>(*OS).write(Value);
}
- void Write16(uint16_t Value) {
+ void write16(uint16_t Value) {
if (IsLittleEndian)
- WriteLE16(Value);
+ writeLE16(Value);
else
- WriteBE16(Value);
+ writeBE16(Value);
}
- void Write32(uint32_t Value) {
+ void write32(uint32_t Value) {
if (IsLittleEndian)
- WriteLE32(Value);
+ writeLE32(Value);
else
- WriteBE32(Value);
+ writeBE32(Value);
}
- void Write64(uint64_t Value) {
+ void write64(uint64_t Value) {
if (IsLittleEndian)
- WriteLE64(Value);
+ writeLE64(Value);
else
- WriteBE64(Value);
+ writeBE64(Value);
}
void WriteZeros(unsigned N) {
const char Zeros[16] = {0};
for (unsigned i = 0, e = N / 16; i != e; ++i)
- OS << StringRef(Zeros, 16);
+ *OS << StringRef(Zeros, 16);
- OS << StringRef(Zeros, N % 16);
+ *OS << StringRef(Zeros, N % 16);
}
- void WriteBytes(const SmallVectorImpl<char> &ByteVec,
+ void writeBytes(const SmallVectorImpl<char> &ByteVec,
unsigned ZeroFillSize = 0) {
- WriteBytes(StringRef(ByteVec.data(), ByteVec.size()), ZeroFillSize);
+ writeBytes(StringRef(ByteVec.data(), ByteVec.size()), ZeroFillSize);
}
- void WriteBytes(StringRef Str, unsigned ZeroFillSize = 0) {
+ void writeBytes(StringRef Str, unsigned ZeroFillSize = 0) {
// TODO: this version may need to go away once all fragment contents are
// converted to SmallVector<char, N>
assert(
(ZeroFillSize == 0 || Str.size() <= ZeroFillSize) &&
"data size greater than fill size, unexpected large write will occur");
- OS << Str;
+ *OS << Str;
if (ZeroFillSize)
WriteZeros(ZeroFillSize - Str.size());
}