#ifndef LLVM_MC_MCASSEMBLER_H
#define LLVM_MC_MCASSEMBLER_H
+#include "llvm/MC/MCFixup.h"
+#include "llvm/MC/MCInst.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/ilist.h"
#include "llvm/ADT/ilist_node.h"
#include "llvm/Support/Casting.h"
-#include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCInst.h"
#include "llvm/Support/DataTypes.h"
#include <vector> // FIXME: Shouldn't be needed.
class raw_ostream;
class MCAsmLayout;
class MCAssembler;
-class MCBinaryExpr;
class MCContext;
class MCCodeEmitter;
class MCExpr;
class MCSymbol;
class MCSymbolData;
class MCValue;
-class TargetAsmBackend;
+class MCAsmBackend;
class MCFragment : public ilist_node<MCFragment> {
friend class MCAsmLayout;
};
class MCDataFragment : public MCFragment {
+ virtual void anchor();
SmallString<32> Contents;
/// Fixups - The list of fixups in this fragment.
void addFixup(MCFixup Fixup) {
// Enforce invariant that fixups are in offset order.
- assert((Fixups.empty() || Fixup.getOffset() > Fixups.back().getOffset()) &&
+ assert((Fixups.empty() || Fixup.getOffset() >= Fixups.back().getOffset()) &&
"Fixups must be added in order!");
Fixups.push_back(Fixup);
}
// object with just the MCInst and a code size, then we should just change
// MCDataFragment to have an optional MCInst at its end.
class MCInstFragment : public MCFragment {
+ virtual void anchor();
+
/// Inst - The instruction this is a fragment for.
MCInst Inst;
};
class MCAlignFragment : public MCFragment {
+ virtual void anchor();
+
/// Alignment - The alignment to ensure, in bytes.
unsigned Alignment;
};
class MCFillFragment : public MCFragment {
+ virtual void anchor();
+
/// Value - Value to use for filling bytes.
int64_t Value;
};
class MCOrgFragment : public MCFragment {
+ virtual void anchor();
+
/// Offset - The offset this fragment should start at.
const MCExpr *Offset;
};
class MCLEBFragment : public MCFragment {
+ virtual void anchor();
+
/// Value - The value this fragment should contain.
const MCExpr *Value;
};
class MCDwarfLineAddrFragment : public MCFragment {
+ virtual void anchor();
+
/// LineDelta - the value of the difference between the two line numbers
/// between two .loc dwarf directives.
int64_t LineDelta;
};
class MCDwarfCallFrameFragment : public MCFragment {
+ virtual void anchor();
+
/// AddrDelta - The expression for the difference of the two symbols that
/// make up the address delta between two .cfi_* dwarf directives.
const MCExpr *AddrDelta;
MCSectionData *SectionData;
};
+// FIXME: Ditto this. Purely so the Streamer and the ObjectWriter can talk
+// to one another.
+struct DataRegionData {
+ // This enum should be kept in sync w/ the mach-o definition in
+ // llvm/Object/MachOFormat.h.
+ enum KindTy { Data = 1, JumpTable8, JumpTable16, JumpTable32 } Kind;
+ MCSymbol *Start;
+ MCSymbol *End;
+};
+
class MCAssembler {
friend class MCAsmLayout;
const_indirect_symbol_iterator;
typedef std::vector<IndirectSymbolData>::iterator indirect_symbol_iterator;
+ typedef std::vector<DataRegionData>::const_iterator
+ const_data_region_iterator;
+ typedef std::vector<DataRegionData>::iterator data_region_iterator;
+
private:
MCAssembler(const MCAssembler&); // DO NOT IMPLEMENT
void operator=(const MCAssembler&); // DO NOT IMPLEMENT
MCContext &Context;
- TargetAsmBackend &Backend;
+ MCAsmBackend &Backend;
MCCodeEmitter &Emitter;
std::vector<IndirectSymbolData> IndirectSymbols;
+ std::vector<DataRegionData> DataRegions;
/// The set of function symbols for which a .thumb_func directive has
/// been seen.
//
SmallPtrSet<const MCSymbol*, 64> ThumbFuncs;
unsigned RelaxAll : 1;
+ unsigned NoExecStack : 1;
unsigned SubsectionsViaSymbols : 1;
private:
/// \param DF The fragment the fixup is inside.
/// \param Target [out] On return, the relocatable expression the fixup
/// evaluates to.
- /// \param Value [out] On return, the value of the fixup as currently layed
+ /// \param Value [out] On return, the value of the fixup as currently laid
/// out.
/// \return Whether the fixup value was fully resolved. This is true if the
/// \arg Value result is fixed, otherwise the value may change due to
/// relocation.
- bool EvaluateFixup(const MCAsmLayout &Layout,
+ bool evaluateFixup(const MCAsmLayout &Layout,
const MCFixup &Fixup, const MCFragment *DF,
MCValue &Target, uint64_t &Value) const;
/// Check whether a fixup can be satisfied, or whether it needs to be relaxed
/// (increased in size, in order to hold its value correctly).
- bool FixupNeedsRelaxation(const MCFixup &Fixup, const MCFragment *DF,
+ bool fixupNeedsRelaxation(const MCFixup &Fixup, const MCInstFragment *DF,
const MCAsmLayout &Layout) const;
/// Check whether the given fragment needs relaxation.
- bool FragmentNeedsRelaxation(const MCInstFragment *IF,
+ bool fragmentNeedsRelaxation(const MCInstFragment *IF,
const MCAsmLayout &Layout) const;
- /// LayoutOnce - Perform one layout iteration and return true if any offsets
+ /// layoutOnce - Perform one layout iteration and return true if any offsets
/// were adjusted.
- bool LayoutOnce(MCAsmLayout &Layout);
+ bool layoutOnce(MCAsmLayout &Layout);
- bool LayoutSectionOnce(MCAsmLayout &Layout, MCSectionData &SD);
+ bool layoutSectionOnce(MCAsmLayout &Layout, MCSectionData &SD);
- bool RelaxInstruction(MCAsmLayout &Layout, MCInstFragment &IF);
+ bool relaxInstruction(MCAsmLayout &Layout, MCInstFragment &IF);
- bool RelaxLEB(MCAsmLayout &Layout, MCLEBFragment &IF);
+ bool relaxLEB(MCAsmLayout &Layout, MCLEBFragment &IF);
- bool RelaxDwarfLineAddr(MCAsmLayout &Layout, MCDwarfLineAddrFragment &DF);
- bool RelaxDwarfCallFrameFragment(MCAsmLayout &Layout,
+ bool relaxDwarfLineAddr(MCAsmLayout &Layout, MCDwarfLineAddrFragment &DF);
+ bool relaxDwarfCallFrameFragment(MCAsmLayout &Layout,
MCDwarfCallFrameFragment &DF);
- /// FinishLayout - Finalize a layout, including fragment lowering.
- void FinishLayout(MCAsmLayout &Layout);
+ /// finishLayout - Finalize a layout, including fragment lowering.
+ void finishLayout(MCAsmLayout &Layout);
- uint64_t HandleFixup(const MCAsmLayout &Layout,
+ uint64_t handleFixup(const MCAsmLayout &Layout,
MCFragment &F, const MCFixup &Fixup);
public:
- /// Compute the effective fragment size assuming it is layed out at the given
+ /// Compute the effective fragment size assuming it is laid out at the given
/// \arg SectionAddress and \arg FragmentOffset.
- uint64_t ComputeFragmentSize(const MCAsmLayout &Layout, const MCFragment &F) const;
+ uint64_t computeFragmentSize(const MCAsmLayout &Layout,
+ const MCFragment &F) const;
/// Find the symbol which defines the atom containing the given symbol, or
/// null if there is no such symbol.
bool isSymbolLinkerVisible(const MCSymbol &SD) const;
/// Emit the section contents using the given object writer.
- void WriteSectionData(const MCSectionData *Section,
+ void writeSectionData(const MCSectionData *Section,
const MCAsmLayout &Layout) const;
/// Check whether a given symbol has been flagged with .thumb_func.
// concrete and require clients to pass in a target like object. The other
// option is to make this abstract, and have targets provide concrete
// implementations as we do with AsmParser.
- MCAssembler(MCContext &Context_, TargetAsmBackend &Backend_,
+ MCAssembler(MCContext &Context_, MCAsmBackend &Backend_,
MCCodeEmitter &Emitter_, MCObjectWriter &Writer_,
raw_ostream &OS);
~MCAssembler();
MCContext &getContext() const { return Context; }
- TargetAsmBackend &getBackend() const { return Backend; }
+ MCAsmBackend &getBackend() const { return Backend; }
MCCodeEmitter &getEmitter() const { return Emitter; }
bool getRelaxAll() const { return RelaxAll; }
void setRelaxAll(bool Value) { RelaxAll = Value; }
+ bool getNoExecStack() const { return NoExecStack; }
+ void setNoExecStack(bool Value) { NoExecStack = Value; }
+
/// @name Section List Access
/// @{
size_t indirect_symbol_size() const { return IndirectSymbols.size(); }
+ /// @}
+ /// @name Data Region List Access
+ /// @{
+
+ // FIXME: This is a total hack, this should not be here. Once things are
+ // factored so that the streamer has direct access to the .o writer, it can
+ // disappear.
+ std::vector<DataRegionData> &getDataRegions() {
+ return DataRegions;
+ }
+
+ data_region_iterator data_region_begin() {
+ return DataRegions.begin();
+ }
+ const_data_region_iterator data_region_begin() const {
+ return DataRegions.begin();
+ }
+
+ data_region_iterator data_region_end() {
+ return DataRegions.end();
+ }
+ const_data_region_iterator data_region_end() const {
+ return DataRegions.end();
+ }
+
+ size_t data_region_size() const { return DataRegions.size(); }
+
/// @}
/// @name Backend Data Access
/// @{
projects / oota-llvm.git / blobdiff