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//===-- PIC16Section.cpp - PIC16 Section ----------- --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "PIC16.h"
#include "PIC16ABINames.h"
#include "PIC16Section.h"
#include "llvm/MC/MCContext.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
// This is the only way to create a PIC16Section. Sections created here
// do not need to be explicitly deleted as they are managed by auto_ptrs.
PIC16Section *PIC16Section::Create(const StringRef &Name,
PIC16SectionType Ty,
const std::string &Address,
int Color, MCContext &Ctx) {
/// Determine the internal SectionKind info.
/// Users of PIC16Section class should not need to know the internal
/// SectionKind. They should work only with PIC16SectionType.
///
/// 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)
/// UDATA_SHR - Shared RAM. Memory area that is mapped to all banks.
SectionKind K;
switch (Ty) {
default: llvm_unreachable ("can not create unknown section type");
case UDATA_OVR: {
K = SectionKind::getThreadBSS();
break;
}
case UDATA_SHR:
case UDATA: {
K = SectionKind::getBSS();
break;
}
case ROMDATA:
case IDATA: {
K = SectionKind::getMetadata();
break;
}
case CODE: {
K = SectionKind::getText();
break;
}
}
// Create the Section.
PIC16Section *S = new (Ctx) PIC16Section(Name, K, Address, Color);
S->T = Ty;
return S;
}
// A generic way to print all types of sections.
void PIC16Section::PrintSwitchToSection(const MCAsmInfo &MAI,
raw_ostream &OS) const {
// If the section is overlaid(i.e. it has a color), print overlay name for
// it. Otherwise print its normal name.
if (Color != -1)
OS << PAN::getOverlayName(getName(), Color) << '\t';
else
OS << getName() << '\t';
// Print type.
switch (getType()) {
default : llvm_unreachable ("unknown section type");
case UDATA: OS << "UDATA"; break;
case IDATA: OS << "IDATA"; break;
case ROMDATA: OS << "ROMDATA"; break;
case UDATA_SHR: OS << "UDATA_SHR"; break;
case UDATA_OVR: OS << "UDATA_OVR"; break;
case CODE: OS << "CODE"; break;
}
OS << '\t';
// Print Address.
OS << Address;
OS << '\n';
}
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