mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
//===- lib/MC/MCSectionCOFF.cpp - COFF Code Section Representation --------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCSectionCOFF.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
MCSectionCOFF::~MCSectionCOFF() {} // anchor.
|
|
|
|
// ShouldOmitSectionDirective - Decides whether a '.section' directive
|
|
// should be printed before the section name
|
|
bool MCSectionCOFF::ShouldOmitSectionDirective(StringRef Name,
|
|
const MCAsmInfo &MAI) const {
|
|
|
|
// FIXME: Does .section .bss/.data/.text work everywhere??
|
|
if (Name == ".text" || Name == ".data" || Name == ".bss")
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
void MCSectionCOFF::PrintSwitchToSection(const MCAsmInfo &MAI,
|
|
raw_ostream &OS) const {
|
|
|
|
// standard sections don't require the '.section'
|
|
if (ShouldOmitSectionDirective(SectionName, MAI)) {
|
|
OS << '\t' << getSectionName() << '\n';
|
|
return;
|
|
}
|
|
|
|
OS << "\t.section\t" << getSectionName() << ",\"";
|
|
if (getKind().isText())
|
|
OS << 'x';
|
|
if (getKind().isWriteable())
|
|
OS << 'w';
|
|
else
|
|
OS << 'r';
|
|
if (getCharacteristics() & COFF::IMAGE_SCN_MEM_DISCARDABLE)
|
|
OS << 'n';
|
|
OS << "\"\n";
|
|
|
|
if (getCharacteristics() & COFF::IMAGE_SCN_LNK_COMDAT) {
|
|
switch (Selection) {
|
|
case COFF::IMAGE_COMDAT_SELECT_NODUPLICATES:
|
|
OS << "\t.linkonce one_only\n";
|
|
break;
|
|
case COFF::IMAGE_COMDAT_SELECT_ANY:
|
|
OS << "\t.linkonce discard\n";
|
|
break;
|
|
case COFF::IMAGE_COMDAT_SELECT_SAME_SIZE:
|
|
OS << "\t.linkonce same_size\n";
|
|
break;
|
|
case COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH:
|
|
OS << "\t.linkonce same_contents\n";
|
|
break;
|
|
//NOTE: as of binutils 2.20, there is no way to specifiy select largest
|
|
// with the .linkonce directive. For now, we treat it as an invalid
|
|
// comdat selection value.
|
|
case COFF::IMAGE_COMDAT_SELECT_LARGEST:
|
|
// OS << "\t.linkonce largest\n";
|
|
// break;
|
|
default:
|
|
assert (0 && "unsupported COFF selection type");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool MCSectionCOFF::UseCodeAlign() const {
|
|
return getKind().isText();
|
|
}
|
|
|
|
bool MCSectionCOFF::isVirtualSection() const {
|
|
return getCharacteristics() & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA;
|
|
}
|