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4e4bba5c80
variables. This pass can be invoked by llvm-ld or opt to traverse over the call graph to detect what function frames and their automatic variables can be overlaid. Currently this builds an archive , but needs to be changed to a loadable module. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84753 91177308-0d34-0410-b5e6-96231b3b80d8
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
//===-- PIC16Section.cpp - PIC16 Section ----------- --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "PIC16.h"
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#include "PIC16ABINames.h"
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#include "PIC16Section.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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// This is the only way to create a PIC16Section. Sections created here
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// do not need to be explicitly deleted as they are managed by auto_ptrs.
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PIC16Section *PIC16Section::Create(const StringRef &Name,
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PIC16SectionType Ty,
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const std::string &Address,
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int Color, MCContext &Ctx) {
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/// Determine the internal SectionKind info.
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/// Users of PIC16Section class should not need to know the internal
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/// SectionKind. They should work only with PIC16SectionType.
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///
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/// PIC16 Terminology for section kinds is as below.
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/// UDATA - BSS
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/// IDATA - initialized data (equiv to Metadata)
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/// ROMDATA - ReadOnly.
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/// UDATA_OVR - Sections that can be overlaid. Section of such type is
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/// used to contain function autos an frame. We can think of
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/// it as equiv to llvm ThreadBSS)
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/// UDATA_SHR - Shared RAM. Memory area that is mapped to all banks.
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SectionKind K;
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switch (Ty) {
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default: llvm_unreachable ("can not create unknown section type");
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case UDATA_OVR: {
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K = SectionKind::getThreadBSS();
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break;
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}
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case UDATA_SHR:
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case UDATA: {
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K = SectionKind::getBSS();
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break;
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}
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case ROMDATA:
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case IDATA: {
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K = SectionKind::getMetadata();
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break;
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}
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case CODE: {
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K = SectionKind::getText();
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break;
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}
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}
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// Create the Section.
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PIC16Section *S = new (Ctx) PIC16Section(Name, K, Address, Color);
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S->T = Ty;
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return S;
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}
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// A generic way to print all types of sections.
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void PIC16Section::PrintSwitchToSection(const MCAsmInfo &MAI,
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raw_ostream &OS) const {
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// If the section is overlaid(i.e. it has a color), print overlay name for
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// it. Otherwise print its normal name.
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if (Color != -1)
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OS << PAN::getOverlayName(getName(), Color) << '\t';
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else
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OS << getName() << '\t';
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// Print type.
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switch (getType()) {
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default : llvm_unreachable ("unknown section type");
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case UDATA: OS << "UDATA"; break;
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case IDATA: OS << "IDATA"; break;
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case ROMDATA: OS << "ROMDATA"; break;
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case UDATA_SHR: OS << "UDATA_SHR"; break;
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case UDATA_OVR: OS << "UDATA_OVR"; break;
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case CODE: OS << "CODE"; break;
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}
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OS << '\t';
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// Print Address.
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OS << Address;
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OS << '\n';
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}
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