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//===- MCSectionPIC16.h - PIC16-specific section representation -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the MCSectionPIC16 class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_PIC16SECTION_H
#define LLVM_PIC16SECTION_H
#include "llvm/MC/MCSection.h"
namespace llvm {
/// MCSectionPIC16 - Represents a physical section in PIC16 COFF.
/// Contains data objects.
///
class MCSectionPIC16 : public MCSection {
/// Name of the section to uniquely identify it.
std::string Name;
/// User can specify an address at which a section should be placed.
/// Negative value here means user hasn't specified any.
int Address;
/// Overlay information - Sections with same color can be overlaid on
/// one another.
int Color;
/// Conatined data objects.
std::vector<const GlobalVariable *>Items;
/// Total size of all data objects contained here.
unsigned Size;
MCSectionPIC16(const StringRef &name, SectionKind K, int addr, int color)
: MCSection(K), Name(name), Address(addr), Color(color) {
}
public:
/// Return the name of the section.
const std::string &getName() const { return Name; }
/// Return the Address of the section.
int getAddress() const { return Address; }
/// Return the Color of the section.
int getColor() const { return Color; }
/// PIC16 Terminology for section kinds is as below.
/// UDATA - BSS
/// IDATA - initialized data (equiv to Metadata)
/// ROMDATA - ReadOnly.
/// UDATA_OVR - Sections that can be overlaid. Section of such type is
/// used to contain function autos an frame. We can think of
/// it as equiv to llvm ThreadBSS)
/// So, let's have some convenience functions to Map PIC16 Section types
/// to SectionKind just for the sake of better readability.
static SectionKind UDATA_Kind() { return SectionKind::getBSS(); }
static SectionKind IDATA_Kind() { return SectionKind::getMetadata(); }
static SectionKind ROMDATA_Kind() { return SectionKind::getReadOnly(); }
static SectionKind UDATA_OVR_Kind() { return SectionKind::getThreadBSS(); }
// If we could just do getKind() == UDATA_Kind() ?
bool isUDATA_Kind() { return getKind().isBSS(); }
bool isIDATA_Kind() { return getKind().isMetadata(); }
bool isROMDATA_Kind() { return getKind().isMetadata(); }
bool isUDATA_OVR_Kind() { return getKind().isThreadBSS(); }
/// This would be the only way to create a section.
static MCSectionPIC16 *Create(const StringRef &Name, SectionKind K,
int Address, int Color, MCContext &Ctx);
/// Override this as PIC16 has its own way of printing switching
/// to a section.
virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS) const;
};
} // end namespace llvm
#endif
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