freebsd-nq/contrib/llvm/lib/MC/MCSectionCOFF.cpp
Ed Schouten ffd1746d03 Upgrade our Clang in base to r108428.
This commit merges the latest LLVM sources from the vendor space. It
also updates the build glue to match the new sources. Clang's version
number is changed to match LLVM's, which means /usr/include/clang/2.0
has been renamed to /usr/include/clang/2.8.

Obtained from:	projects/clangbsd
2010-07-20 17:16:57 +00:00

77 lines
2.4 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;
}
}
}