lib/Target/PIC16/PIC16TargetObjectFile.h

   1 //===-- PIC16TargetObjectFile.h - PIC16 Object Info -------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef LLVM_TARGET_PIC16_TARGETOBJECTFILE_H
  11 #define LLVM_TARGET_PIC16_TARGETOBJECTFILE_H
  12
  13 #include "llvm/Target/TargetLoweringObjectFile.h"
  14 #include "llvm/ADT/StringMap.h"
  15 #include <vector>
  16 #include <string>
  17
  18 namespace llvm {
  19   class GlobalVariable;
  20   class Module;
  21   class PIC16TargetMachine;
  22   class MCSectionPIC16;
  23
  24   enum { DataBankSize = 80 };
  25
  26   /// PIC16 Splits the global data into mulitple udata and idata sections.
  27   /// Each udata and idata section needs to contain a list of globals that
  28   /// they contain, in order to avoid scanning over all the global values
  29   /// again and printing only those that match the current section.
  30   /// Keeping values inside the sections make printing a section much easier.
  31   ///
  32   /// FIXME: MOVE ALL THIS STUFF TO MCSectionPIC16.
  33   ///
  34   struct PIC16Section {
  35     const MCSectionPIC16 *S_; // Connection to actual Section.
  36     unsigned Size;  // Total size of the objects contained.
  37     bool SectionPrinted;
  38     std::vector<const GlobalVariable*> Items;
  39
  40     PIC16Section(const MCSectionPIC16 *s) {
  41       S_ = s;
  42       Size = 0;
  43       SectionPrinted = false;
  44     }
  45     bool isPrinted() const { return SectionPrinted; }
  46     void setPrintedStatus(bool status) { SectionPrinted = status; }
  47   };
  48
  49   class PIC16TargetObjectFile : public TargetLoweringObjectFile {
  50     /// SectionsByName - Bindings of names to allocated sections.
  51     mutable StringMap<MCSectionPIC16*> SectionsByName;
  52
  53     const TargetMachine *TM;
  54
  55     const MCSectionPIC16 *getPIC16Section(const char *Name,
  56                                           SectionKind K,
  57                                           int Address = -1,
  58                                           int Color = -1) const;
  59   public:
  60     mutable std::vector<PIC16Section*> BSSSections;
  61     mutable std::vector<PIC16Section*> IDATASections;
  62     mutable std::vector<PIC16Section*> AutosSections;
  63     mutable std::vector<PIC16Section*> ROSections;
  64     mutable PIC16Section *ExternalVarDecls;
  65     mutable PIC16Section *ExternalVarDefs;
  66
  67     PIC16TargetObjectFile();
  68     ~PIC16TargetObjectFile();
  69
  70     void Initialize(MCContext &Ctx, const TargetMachine &TM);
  71
  72
  73     virtual const MCSection *
  74     getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
  75                              Mangler *Mang, const TargetMachine &TM) const;
  76
  77     virtual const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
  78                                                     SectionKind Kind,
  79                                                     Mangler *Mang,
  80                                                     const TargetMachine&) const;
  81
  82     const MCSection *getSectionForFunction(const std::string &FnName) const;
  83     const MCSection *getSectionForFunctionFrame(const std::string &FnName)const;
  84
  85
  86   private:
  87     std::string getSectionNameForSym(const std::string &Sym) const;
  88
  89     const MCSection *getBSSSectionForGlobal(const GlobalVariable *GV) const;
  90     const MCSection *getIDATASectionForGlobal(const GlobalVariable *GV) const;
  91     const MCSection *getSectionForAuto(const GlobalVariable *GV) const;
  92     const MCSection *CreateBSSSectionForGlobal(const GlobalVariable *GV,
  93                                                std::string Addr = "") const;
  94     const MCSection *CreateIDATASectionForGlobal(const GlobalVariable *GV,
  95                                                  std::string Addr = "") const;
  96     const MCSection *getROSectionForGlobal(const GlobalVariable *GV) const;
  97     const MCSection *CreateROSectionForGlobal(const GlobalVariable *GV,
  98                                               std::string Addr = "") const;
  99     const MCSection *CreateSectionForGlobal(const GlobalVariable *GV,
 100                                             Mangler *Mang,
 101                                             const std::string &Addr = "") const;
 102   public:
 103     void SetSectionForGVs(Module &M);
 104     const std::vector<PIC16Section*> &getBSSSections() const {
 105       return BSSSections;
 106     }
 107     const std::vector<PIC16Section*> &getIDATASections() const {
 108       return IDATASections;
 109     }
 110     const std::vector<PIC16Section*> &getAutosSections() const {
 111       return AutosSections;
 112     }
 113     const std::vector<PIC16Section*> &getROSections() const {
 114       return ROSections;
 115     }
 116
 117   };
 118 } // end namespace llvm
 119
 120 #endif