forked from OSchip/llvm-project
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
//===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
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#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_H
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#include "llvm/MC/MCAsmLayout.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCValue.h"
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namespace llvm {
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class PPCMCExpr : public MCTargetExpr {
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public:
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enum VariantKind {
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VK_PPC_None,
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VK_PPC_LO,
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VK_PPC_HI,
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VK_PPC_HA,
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VK_PPC_HIGHER,
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VK_PPC_HIGHERA,
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VK_PPC_HIGHEST,
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VK_PPC_HIGHESTA
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};
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private:
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const VariantKind Kind;
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const MCExpr *Expr;
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bool IsDarwin;
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int64_t evaluateAsInt64(int64_t Value) const;
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explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin)
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: Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {}
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public:
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/// @name Construction
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/// @{
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static const PPCMCExpr *create(VariantKind Kind, const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx);
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static const PPCMCExpr *createLo(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return create(VK_PPC_LO, Expr, isDarwin, Ctx);
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}
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static const PPCMCExpr *createHi(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return create(VK_PPC_HI, Expr, isDarwin, Ctx);
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}
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static const PPCMCExpr *createHa(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return create(VK_PPC_HA, Expr, isDarwin, Ctx);
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}
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/// @}
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/// @name Accessors
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/// @{
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/// getOpcode - Get the kind of this expression.
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VariantKind getKind() const { return Kind; }
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/// getSubExpr - Get the child of this expression.
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const MCExpr *getSubExpr() const { return Expr; }
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/// isDarwinSyntax - True if expression is to be printed using Darwin syntax.
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bool isDarwinSyntax() const { return IsDarwin; }
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/// @}
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void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
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bool evaluateAsRelocatableImpl(MCValue &Res,
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const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override;
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void visitUsedExpr(MCStreamer &Streamer) const override;
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MCFragment *findAssociatedFragment() const override {
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return getSubExpr()->findAssociatedFragment();
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}
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// There are no TLS PPCMCExprs at the moment.
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void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
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bool evaluateAsConstant(int64_t &Res) const;
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Target;
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}
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};
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} // end namespace llvm
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#endif
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