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//===-- PIC16TargetObjectFile.h - PIC16 Object Info -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_PIC16_TARGETOBJECTFILE_H
#define LLVM_TARGET_PIC16_TARGETOBJECTFILE_H
#include "PIC16.h"
#include "PIC16ABINames.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/ADT/StringMap.h"
#include <vector>
#include <string>
namespace llvm {
class GlobalVariable;
class Module;
class PIC16TargetMachine;
class PIC16Section;
enum { DataBankSize = 80 };
/// PIC16 Splits the global data into mulitple udata and idata sections.
/// Each udata and idata section needs to contain a list of globals that
/// they contain, in order to avoid scanning over all the global values
/// again and printing only those that match the current section.
/// Keeping values inside the sections make printing a section much easier.
///
/// FIXME: MOVE ALL THIS STUFF TO PIC16Section.
///
/// PIC16TargetObjectFile - PIC16 Object file. Contains data and code
/// sections.
// PIC16 Object File has two types of sections.
// 1. Standard Sections
// 1.1 un-initialized global data
// 1.2 initialized global data
// 1.3 program memory data
// 1.4 local variables of functions.
// 2. User defined sections
// 2.1 Objects placed in a specific section. (By _Section() macro)
// 2.2 Objects placed at a specific address. (By _Address() macro)
class PIC16TargetObjectFile : public TargetLoweringObjectFile {
/// SectionsByName - Bindings of names to allocated sections.
mutable StringMap<PIC16Section*> SectionsByName;
const TargetMachine *TM;
/// Lists of sections.
/// Standard Data Sections.
mutable std::vector<PIC16Section *> UDATASections_;
mutable std::vector<PIC16Section *> IDATASections_;
mutable PIC16Section * ROMDATASection_;
mutable PIC16Section * SHAREDUDATASection_;
/// Standard Auto Sections.
mutable std::vector<PIC16Section *> AUTOSections_;
/// User specified sections.
mutable std::vector<PIC16Section *> USERSections_;
/// Find or Create a PIC16 Section, without adding it to any
/// section list.
PIC16Section *getPIC16Section(const std::string &Name,
PIC16SectionType Ty,
const std::string &Address = "",
int Color = -1) const;
/// Convenience functions. These wrappers also take care of adding
/// the newly created section to the appropriate sections list.
/// Find or Create PIC16 Standard Data Section.
PIC16Section *getPIC16DataSection(const std::string &Name,
PIC16SectionType Ty,
const std::string &Address = "",
int Color = -1) const;
/// Find or Create PIC16 Standard Auto Section.
PIC16Section *getPIC16AutoSection(const std::string &Name,
PIC16SectionType Ty = UDATA_OVR,
const std::string &Address = "",
int Color = -1) const;
/// Find or Create PIC16 Standard Auto Section.
PIC16Section *getPIC16UserSection(const std::string &Name,
PIC16SectionType Ty,
const std::string &Address = "",
int Color = -1) const;
/// Allocate Un-initialized data to a standard UDATA section.
const MCSection *allocateUDATA(const GlobalVariable *GV) const;
/// Allocate Initialized data to a standard IDATA section.
const MCSection *allocateIDATA(const GlobalVariable *GV) const;
/// Allocate ROM data to the standard ROMDATA section.
const MCSection *allocateROMDATA(const GlobalVariable *GV) const;
/// Allocate an AUTO variable to an AUTO section.
const MCSection *allocateAUTO(const GlobalVariable *GV) const;
/// Allocate DATA in user specified section.
const MCSection *allocateInGivenSection(const GlobalVariable *GV) const;
/// Allocate DATA at user specified address.
const MCSection *allocateAtGivenAddress(const GlobalVariable *GV,
const std::string &Addr) const;
/// Allocate a shared variable to SHARED section.
const MCSection *allocateSHARED(const GlobalVariable *GV,
Mangler *Mang) const;
public:
PIC16TargetObjectFile();
~PIC16TargetObjectFile();
void Initialize(MCContext &Ctx, const TargetMachine &TM);
/// Return the section with the given Name. Null if not found.
PIC16Section *findPIC16Section(const std::string &Name);
/// Override section allocations for user specified sections.
virtual const MCSection *
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const;
/// Select sections for Data and Auto variables(globals).
virtual const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
SectionKind Kind,
Mangler *Mang,
const TargetMachine&) const;
/// Return a code section for a function.
const PIC16Section *SectionForCode (const std::string &FnName) const;
/// Return a frame section for a function.
const PIC16Section *SectionForFrame (const std::string &FnName) const;
/// Accessors for various section lists.
const std::vector<PIC16Section *> &UDATASections() const {
return UDATASections_;
}
const std::vector<PIC16Section *> &IDATASections() const {
return IDATASections_;
}
const PIC16Section *ROMDATASection() const {
return ROMDATASection_;
}
const PIC16Section *SHAREDUDATASection() const {
return SHAREDUDATASection_;
}
const std::vector<PIC16Section *> &AUTOSections() const {
return AUTOSections_;
}
const std::vector<PIC16Section *> &USERSections() const {
return USERSections_;
}
};
} // end namespace llvm
#endif
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