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      1 //====- SparcMCExpr.h - Sparc specific MC expression classes --*- C++ -*-=====//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 // This file describes Sparc-specific MCExprs, used for modifiers like
     10 // "%hi" or "%lo" etc.,
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #ifndef LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
     15 #define LLVM_LIB_TARGET_SPARC_MCTARGETDESC_SPARCMCEXPR_H
     16 
     17 #include "SparcFixupKinds.h"
     18 #include "llvm/MC/MCExpr.h"
     19 
     20 namespace llvm {
     21 
     22 class StringRef;
     23 class SparcMCExpr : public MCTargetExpr {
     24 public:
     25   enum VariantKind {
     26     VK_Sparc_None,
     27     VK_Sparc_LO,
     28     VK_Sparc_HI,
     29     VK_Sparc_H44,
     30     VK_Sparc_M44,
     31     VK_Sparc_L44,
     32     VK_Sparc_HH,
     33     VK_Sparc_HM,
     34     VK_Sparc_LM,
     35     VK_Sparc_PC22,
     36     VK_Sparc_PC10,
     37     VK_Sparc_GOT22,
     38     VK_Sparc_GOT10,
     39     VK_Sparc_GOT13,
     40     VK_Sparc_13,
     41     VK_Sparc_WPLT30,
     42     VK_Sparc_WDISP30,
     43     VK_Sparc_R_DISP32,
     44     VK_Sparc_TLS_GD_HI22,
     45     VK_Sparc_TLS_GD_LO10,
     46     VK_Sparc_TLS_GD_ADD,
     47     VK_Sparc_TLS_GD_CALL,
     48     VK_Sparc_TLS_LDM_HI22,
     49     VK_Sparc_TLS_LDM_LO10,
     50     VK_Sparc_TLS_LDM_ADD,
     51     VK_Sparc_TLS_LDM_CALL,
     52     VK_Sparc_TLS_LDO_HIX22,
     53     VK_Sparc_TLS_LDO_LOX10,
     54     VK_Sparc_TLS_LDO_ADD,
     55     VK_Sparc_TLS_IE_HI22,
     56     VK_Sparc_TLS_IE_LO10,
     57     VK_Sparc_TLS_IE_LD,
     58     VK_Sparc_TLS_IE_LDX,
     59     VK_Sparc_TLS_IE_ADD,
     60     VK_Sparc_TLS_LE_HIX22,
     61     VK_Sparc_TLS_LE_LOX10
     62   };
     63 
     64 private:
     65   const VariantKind Kind;
     66   const MCExpr *Expr;
     67 
     68   explicit SparcMCExpr(VariantKind Kind, const MCExpr *Expr)
     69       : Kind(Kind), Expr(Expr) {}
     70 
     71 public:
     72   /// @name Construction
     73   /// @{
     74 
     75   static const SparcMCExpr *create(VariantKind Kind, const MCExpr *Expr,
     76                                  MCContext &Ctx);
     77   /// @}
     78   /// @name Accessors
     79   /// @{
     80 
     81   /// getOpcode - Get the kind of this expression.
     82   VariantKind getKind() const { return Kind; }
     83 
     84   /// getSubExpr - Get the child of this expression.
     85   const MCExpr *getSubExpr() const { return Expr; }
     86 
     87   /// getFixupKind - Get the fixup kind of this expression.
     88   Sparc::Fixups getFixupKind() const { return getFixupKind(Kind); }
     89 
     90   /// @}
     91   void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
     92   bool evaluateAsRelocatableImpl(MCValue &Res,
     93                                  const MCAsmLayout *Layout,
     94                                  const MCFixup *Fixup) const override;
     95   void visitUsedExpr(MCStreamer &Streamer) const override;
     96   MCFragment *findAssociatedFragment() const override {
     97     return getSubExpr()->findAssociatedFragment();
     98   }
     99 
    100   void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override;
    101 
    102   static bool classof(const MCExpr *E) {
    103     return E->getKind() == MCExpr::Target;
    104   }
    105 
    106   static bool classof(const SparcMCExpr *) { return true; }
    107 
    108   static VariantKind parseVariantKind(StringRef name);
    109   static bool printVariantKind(raw_ostream &OS, VariantKind Kind);
    110   static Sparc::Fixups getFixupKind(VariantKind Kind);
    111 };
    112 
    113 } // end namespace llvm.
    114 
    115 #endif
    116