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Diffstat (limited to 'contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h')
-rw-r--r-- | contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h b/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h new file mode 100644 index 0000000..75dde80 --- /dev/null +++ b/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.h @@ -0,0 +1,79 @@ +//===-- ARMMCExpr.h - ARM specific MC expression classes --------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCEXPR_H +#define LLVM_LIB_TARGET_ARM_MCTARGETDESC_ARMMCEXPR_H + +#include "llvm/MC/MCExpr.h" + +namespace llvm { + +class ARMMCExpr : public MCTargetExpr { +public: + enum VariantKind { + VK_ARM_None, + VK_ARM_HI16, // The R_ARM_MOVT_ABS relocation (:upper16: in the .s file) + VK_ARM_LO16 // The R_ARM_MOVW_ABS_NC relocation (:lower16: in the .s file) + }; + +private: + const VariantKind Kind; + const MCExpr *Expr; + + explicit ARMMCExpr(VariantKind Kind, const MCExpr *Expr) + : Kind(Kind), Expr(Expr) {} + +public: + /// @name Construction + /// @{ + + static const ARMMCExpr *create(VariantKind Kind, const MCExpr *Expr, + MCContext &Ctx); + + static const ARMMCExpr *createUpper16(const MCExpr *Expr, MCContext &Ctx) { + return create(VK_ARM_HI16, Expr, Ctx); + } + + static const ARMMCExpr *createLower16(const MCExpr *Expr, MCContext &Ctx) { + return create(VK_ARM_LO16, Expr, Ctx); + } + + /// @} + /// @name Accessors + /// @{ + + /// getOpcode - Get the kind of this expression. + VariantKind getKind() const { return Kind; } + + /// getSubExpr - Get the child of this expression. + const MCExpr *getSubExpr() const { return Expr; } + + /// @} + + void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override; + bool evaluateAsRelocatableImpl(MCValue &Res, + const MCAsmLayout *Layout, + const MCFixup *Fixup) const override { + return false; + } + void visitUsedExpr(MCStreamer &Streamer) const override; + MCFragment *findAssociatedFragment() const override { + return getSubExpr()->findAssociatedFragment(); + } + + // There are no TLS ARMMCExprs at the moment. + void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} + + static bool classof(const MCExpr *E) { + return E->getKind() == MCExpr::Target; + } +}; +} // end namespace llvm + +#endif |