94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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//===-- PPCMCExpr.h - PPC specific MC expression classes --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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_HIGH,
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VK_PPC_HIGHA,
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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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int64_t evaluateAsInt64(int64_t Value) const;
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explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr)
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: Kind(Kind), Expr(Expr) {}
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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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MCContext &Ctx);
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static const PPCMCExpr *createLo(const MCExpr *Expr, MCContext &Ctx) {
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return create(VK_PPC_LO, Expr, Ctx);
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}
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static const PPCMCExpr *createHi(const MCExpr *Expr, MCContext &Ctx) {
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return create(VK_PPC_HI, Expr, Ctx);
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}
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static const PPCMCExpr *createHa(const MCExpr *Expr, MCContext &Ctx) {
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return create(VK_PPC_HA, Expr, 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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/// @}
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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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