class MCDataFragment;
class MCFixup;
class MCInst;
-class MCInstFragment;
+class MCObjectFormat;
class MCObjectWriter;
class MCSection;
template<typename T>
/// TheTarget - The Target that this machine was created for.
const Target &TheTarget;
- unsigned HasAbsolutizedSet : 1;
unsigned HasReliableSymbolDifference : 1;
unsigned HasScatteredSymbols : 1;
const Target &getTarget() const { return TheTarget; }
+ virtual const MCObjectFormat &getObjectFormat() const = 0;
+
/// createObjectWriter - Create a new MCObjectWriter instance for use by the
/// assembler backend to emit the final object file.
virtual MCObjectWriter *createObjectWriter(raw_ostream &OS) const = 0;
- /// hasAbsolutizedSet - Check whether this target "absolutizes"
- /// assignments. That is, given code like:
- /// a:
- /// ...
- /// b:
- /// tmp = a - b
- /// .long tmp
- /// will the value of 'tmp' be a relocatable expression, or the assembly time
- /// value of L0 - L1. This distinction is only relevant for platforms that
- /// support scattered symbols, since in the absence of scattered symbols (a -
- /// b) cannot change after assembly.
- bool hasAbsolutizedSet() const { return HasAbsolutizedSet; }
-
/// hasReliableSymbolDifference - Check whether this target implements
/// accurate relocations for differences between symbols. If not, differences
/// between symbols will always be relocatable expressions and any references
/// This should always be true (since it results in fewer relocations with no
/// loss of functionality), but is currently supported as a way to maintain
/// exact object compatibility with Darwin 'as' (on non-x86_64). It should
- /// eventually should be eliminated. See also \see hasAbsolutizedSet.
+ /// eventually should be eliminated.
bool hasReliableSymbolDifference() const {
return HasReliableSymbolDifference;
}
/// has no actual object file contents.
virtual bool isVirtualSection(const MCSection &Section) const = 0;
+ /// getPointerSize - Get the pointer size in bytes.
+ virtual unsigned getPointerSize() const = 0;
+
/// ApplyFixup - Apply the \arg Value for given \arg Fixup into the provided
/// data fragment, at the offset specified by the fixup and following the
/// fixup kind as appropriate.
/// MayNeedRelaxation - Check whether the given instruction may need
/// relaxation.
///
- /// \arg Inst - The instruction to test.
- /// \arg Fixups - The actual fixups this instruction encoded to, for potential
- /// use by the target backend.
- virtual bool MayNeedRelaxation(const MCInst &Inst,
- const SmallVectorImpl<MCFixup> &Fixups) const = 0;
+ /// \param Inst - The instruction to test.
+ virtual bool MayNeedRelaxation(const MCInst &Inst) const = 0;
/// RelaxInstruction - Relax the instruction in the given fragment to the next
/// wider instruction.
- virtual void RelaxInstruction(const MCInstFragment *IF,
- MCInst &Res) const = 0;
+ ///
+ /// \param Inst - The instruction to relax, which may be the same as the
+ /// output.
+ /// \parm Res [output] - On return, the relaxed instruction.
+ virtual void RelaxInstruction(const MCInst &Inst, MCInst &Res) const = 0;
/// WriteNopData - Write an (optimal) nop sequence of Count bytes to the given
/// output. If the target cannot generate such a sequence, it should return an