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Diffstat (limited to 'contrib/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h')
-rw-r--r-- | contrib/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h b/contrib/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h new file mode 100644 index 0000000..d42a111 --- /dev/null +++ b/contrib/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCExpr.h @@ -0,0 +1,100 @@ +//===-- PPCMCExpr.h - PPC 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_POWERPC_MCTARGETDESC_PPCMCEXPR_H +#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H + +#include "llvm/MC/MCAsmLayout.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCValue.h" + +namespace llvm { + +class PPCMCExpr : public MCTargetExpr { +public: + enum VariantKind { + VK_PPC_None, + VK_PPC_LO, + VK_PPC_HI, + VK_PPC_HA, + VK_PPC_HIGHER, + VK_PPC_HIGHERA, + VK_PPC_HIGHEST, + VK_PPC_HIGHESTA + }; + +private: + const VariantKind Kind; + const MCExpr *Expr; + bool IsDarwin; + + int64_t evaluateAsInt64(int64_t Value) const; + + explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin) + : Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {} + +public: + /// @name Construction + /// @{ + + static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr, + bool isDarwin, MCContext &Ctx); + + static const PPCMCExpr *createLo(const MCExpr *Expr, + bool isDarwin, MCContext &Ctx) { + return create(VK_PPC_LO, Expr, isDarwin, Ctx); + } + + static const PPCMCExpr *createHi(const MCExpr *Expr, + bool isDarwin, MCContext &Ctx) { + return create(VK_PPC_HI, Expr, isDarwin, Ctx); + } + + static const PPCMCExpr *createHa(const MCExpr *Expr, + bool isDarwin, MCContext &Ctx) { + return create(VK_PPC_HA, Expr, isDarwin, 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; } + + /// isDarwinSyntax - True if expression is to be printed using Darwin syntax. + bool isDarwinSyntax() const { return IsDarwin; } + + + /// @} + + void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override; + bool evaluateAsRelocatableImpl(MCValue &Res, + const MCAsmLayout *Layout, + const MCFixup *Fixup) const override; + void visitUsedExpr(MCStreamer &Streamer) const override; + MCFragment *findAssociatedFragment() const override { + return getSubExpr()->findAssociatedFragment(); + } + + // There are no TLS PPCMCExprs at the moment. + void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {} + + bool evaluateAsConstant(int64_t &Res) const; + + static bool classof(const MCExpr *E) { + return E->getKind() == MCExpr::Target; + } +}; +} // end namespace llvm + +#endif |