#ifndef LLVM_MC_MCOBJECTWRITER_H
#define LLVM_MC_MCOBJECTWRITER_H
-#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/DataTypes.h"
-#include "llvm/System/Host.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DataTypes.h"
#include <cassert>
namespace llvm {
class MCAssembler;
class MCFixup;
class MCFragment;
+class MCSymbolData;
+class MCSymbolRefExpr;
class MCValue;
-class raw_ostream;
/// MCObjectWriter - Defines the object file and target independent interfaces
/// used by the assembler backend to write native file format object files.
/// The object writer also contains a number of helper methods for writing
/// binary data to the output stream.
class MCObjectWriter {
- MCObjectWriter(const MCObjectWriter &); // DO NOT IMPLEMENT
- void operator=(const MCObjectWriter &); // DO NOT IMPLEMENT
+ MCObjectWriter(const MCObjectWriter &) LLVM_DELETED_FUNCTION;
+ void operator=(const MCObjectWriter &) LLVM_DELETED_FUNCTION;
protected:
raw_ostream &OS;
///
/// This routine is called by the assembler after layout and relaxation is
/// complete.
- virtual void ExecutePostLayoutBinding(MCAssembler &Asm) = 0;
+ virtual void ExecutePostLayoutBinding(MCAssembler &Asm,
+ const MCAsmLayout &Layout) = 0;
/// Record a relocation entry.
///
const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue) = 0;
+ /// \brief Check whether the difference (A - B) between two symbol
+ /// references is fully resolved.
+ ///
+ /// Clients are not required to answer precisely and may conservatively return
+ /// false, even when a difference is fully resolved.
+ bool
+ IsSymbolRefDifferenceFullyResolved(const MCAssembler &Asm,
+ const MCSymbolRefExpr *A,
+ const MCSymbolRefExpr *B,
+ bool InSet) const;
+
+ virtual bool
+ IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
+ const MCSymbolData &DataA,
+ const MCFragment &FB,
+ bool InSet,
+ bool IsPCRel) const;
+
+
/// Write the object file.
///
/// 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(const MCAssembler &Asm,
+ virtual void WriteObject(MCAssembler &Asm,
const MCAsmLayout &Layout) = 0;
/// @}
}
void WriteLE16(uint16_t Value) {
- if (sys::isBigEndianHost())
- Value = ByteSwap_16(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ Write8(uint8_t(Value >> 0));
+ Write8(uint8_t(Value >> 8));
}
void WriteLE32(uint32_t Value) {
- if (sys::isBigEndianHost())
- Value = ByteSwap_32(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ WriteLE16(uint16_t(Value >> 0));
+ WriteLE16(uint16_t(Value >> 16));
}
void WriteLE64(uint64_t Value) {
- if (sys::isBigEndianHost())
- Value = ByteSwap_64(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ WriteLE32(uint32_t(Value >> 0));
+ WriteLE32(uint32_t(Value >> 32));
}
void WriteBE16(uint16_t Value) {
- if (sys::isLittleEndianHost())
- Value = ByteSwap_16(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ Write8(uint8_t(Value >> 8));
+ Write8(uint8_t(Value >> 0));
}
void WriteBE32(uint32_t Value) {
- if (sys::isLittleEndianHost())
- Value = ByteSwap_32(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ WriteBE16(uint16_t(Value >> 16));
+ WriteBE16(uint16_t(Value >> 0));
}
void WriteBE64(uint64_t Value) {
- if (sys::isLittleEndianHost())
- Value = ByteSwap_64(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ WriteBE32(uint32_t(Value >> 32));
+ WriteBE32(uint32_t(Value >> 0));
}
void Write16(uint16_t Value) {
- if (IsLittleEndian != sys::isLittleEndianHost())
- Value = ByteSwap_16(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ if (IsLittleEndian)
+ WriteLE16(Value);
+ else
+ WriteBE16(Value);
}
void Write32(uint32_t Value) {
- if (IsLittleEndian != sys::isLittleEndianHost())
- Value = ByteSwap_32(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ if (IsLittleEndian)
+ WriteLE32(Value);
+ else
+ WriteBE32(Value);
}
void Write64(uint64_t Value) {
- if (IsLittleEndian != sys::isLittleEndianHost())
- Value = ByteSwap_64(Value);
- OS << StringRef((const char*)&Value, sizeof(Value));
+ if (IsLittleEndian)
+ WriteLE64(Value);
+ else
+ WriteBE64(Value);
}
void WriteZeros(unsigned N) {
}
/// @}
-};
-MCObjectWriter *createWinCOFFObjectWriter(raw_ostream &OS);
+};
} // End llvm namespace