mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-27 15:29:51 +00:00
Patch by Dmitry Gorbachev! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79334 91177308-0d34-0410-b5e6-96231b3b80d8
1038 lines
39 KiB
C++
1038 lines
39 KiB
C++
//===-- llvm/Target/TargetLoweringObjectFile.cpp - Object File Info -------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements classes used to handle lowerings specific to common
|
|
// object file formats.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Target/TargetLoweringObjectFile.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/GlobalVariable.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCSectionMachO.h"
|
|
#include "llvm/MC/MCSectionELF.h"
|
|
#include "llvm/Target/TargetData.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/Support/Mangler.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
using namespace llvm;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Generic Code
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
TargetLoweringObjectFile::TargetLoweringObjectFile() : Ctx(0) {
|
|
TextSection = 0;
|
|
DataSection = 0;
|
|
BSSSection = 0;
|
|
ReadOnlySection = 0;
|
|
StaticCtorSection = 0;
|
|
StaticDtorSection = 0;
|
|
LSDASection = 0;
|
|
EHFrameSection = 0;
|
|
|
|
DwarfAbbrevSection = 0;
|
|
DwarfInfoSection = 0;
|
|
DwarfLineSection = 0;
|
|
DwarfFrameSection = 0;
|
|
DwarfPubNamesSection = 0;
|
|
DwarfPubTypesSection = 0;
|
|
DwarfDebugInlineSection = 0;
|
|
DwarfStrSection = 0;
|
|
DwarfLocSection = 0;
|
|
DwarfARangesSection = 0;
|
|
DwarfRangesSection = 0;
|
|
DwarfMacroInfoSection = 0;
|
|
}
|
|
|
|
TargetLoweringObjectFile::~TargetLoweringObjectFile() {
|
|
}
|
|
|
|
static bool isSuitableForBSS(const GlobalVariable *GV) {
|
|
Constant *C = GV->getInitializer();
|
|
|
|
// Must have zero initializer.
|
|
if (!C->isNullValue())
|
|
return false;
|
|
|
|
// Leave constant zeros in readonly constant sections, so they can be shared.
|
|
if (GV->isConstant())
|
|
return false;
|
|
|
|
// If the global has an explicit section specified, don't put it in BSS.
|
|
if (!GV->getSection().empty())
|
|
return false;
|
|
|
|
// If -nozero-initialized-in-bss is specified, don't ever use BSS.
|
|
if (NoZerosInBSS)
|
|
return false;
|
|
|
|
// Otherwise, put it in BSS!
|
|
return true;
|
|
}
|
|
|
|
/// IsNullTerminatedString - Return true if the specified constant (which is
|
|
/// known to have a type that is an array of 1/2/4 byte elements) ends with a
|
|
/// nul value and contains no other nuls in it.
|
|
static bool IsNullTerminatedString(const Constant *C) {
|
|
const ArrayType *ATy = cast<ArrayType>(C->getType());
|
|
|
|
// First check: is we have constant array of i8 terminated with zero
|
|
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(C)) {
|
|
if (ATy->getNumElements() == 0) return false;
|
|
|
|
ConstantInt *Null =
|
|
dyn_cast<ConstantInt>(CVA->getOperand(ATy->getNumElements()-1));
|
|
if (Null == 0 || Null->getZExtValue() != 0)
|
|
return false; // Not null terminated.
|
|
|
|
// Verify that the null doesn't occur anywhere else in the string.
|
|
for (unsigned i = 0, e = ATy->getNumElements()-1; i != e; ++i)
|
|
// Reject constantexpr elements etc.
|
|
if (!isa<ConstantInt>(CVA->getOperand(i)) ||
|
|
CVA->getOperand(i) == Null)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
// Another possibility: [1 x i8] zeroinitializer
|
|
if (isa<ConstantAggregateZero>(C))
|
|
return ATy->getNumElements() == 1;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// getKindForGlobal - This is a top-level target-independent classifier for
|
|
/// a global variable. Given an global variable and information from TM, it
|
|
/// classifies the global in a variety of ways that make various target
|
|
/// implementations simpler. The target implementation is free to ignore this
|
|
/// extra info of course.
|
|
SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV,
|
|
const TargetMachine &TM){
|
|
assert(!GV->isDeclaration() && !GV->hasAvailableExternallyLinkage() &&
|
|
"Can only be used for global definitions");
|
|
|
|
Reloc::Model ReloModel = TM.getRelocationModel();
|
|
|
|
// Early exit - functions should be always in text sections.
|
|
const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV);
|
|
if (GVar == 0)
|
|
return SectionKind::getText();
|
|
|
|
// Handle thread-local data first.
|
|
if (GVar->isThreadLocal()) {
|
|
if (isSuitableForBSS(GVar))
|
|
return SectionKind::getThreadBSS();
|
|
return SectionKind::getThreadData();
|
|
}
|
|
|
|
// Variable can be easily put to BSS section.
|
|
if (isSuitableForBSS(GVar))
|
|
return SectionKind::getBSS();
|
|
|
|
Constant *C = GVar->getInitializer();
|
|
|
|
// If the global is marked constant, we can put it into a mergable section,
|
|
// a mergable string section, or general .data if it contains relocations.
|
|
if (GVar->isConstant()) {
|
|
// If the initializer for the global contains something that requires a
|
|
// relocation, then we may have to drop this into a wriable data section
|
|
// even though it is marked const.
|
|
switch (C->getRelocationInfo()) {
|
|
default: llvm_unreachable("unknown relocation info kind");
|
|
case Constant::NoRelocation:
|
|
// If initializer is a null-terminated string, put it in a "cstring"
|
|
// section of the right width.
|
|
if (const ArrayType *ATy = dyn_cast<ArrayType>(C->getType())) {
|
|
if (const IntegerType *ITy =
|
|
dyn_cast<IntegerType>(ATy->getElementType())) {
|
|
if ((ITy->getBitWidth() == 8 || ITy->getBitWidth() == 16 ||
|
|
ITy->getBitWidth() == 32) &&
|
|
IsNullTerminatedString(C)) {
|
|
if (ITy->getBitWidth() == 8)
|
|
return SectionKind::getMergeable1ByteCString();
|
|
if (ITy->getBitWidth() == 16)
|
|
return SectionKind::getMergeable2ByteCString();
|
|
|
|
assert(ITy->getBitWidth() == 32 && "Unknown width");
|
|
return SectionKind::getMergeable4ByteCString();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Otherwise, just drop it into a mergable constant section. If we have
|
|
// a section for this size, use it, otherwise use the arbitrary sized
|
|
// mergable section.
|
|
switch (TM.getTargetData()->getTypeAllocSize(C->getType())) {
|
|
case 4: return SectionKind::getMergeableConst4();
|
|
case 8: return SectionKind::getMergeableConst8();
|
|
case 16: return SectionKind::getMergeableConst16();
|
|
default: return SectionKind::getMergeableConst();
|
|
}
|
|
|
|
case Constant::LocalRelocation:
|
|
// In static relocation model, the linker will resolve all addresses, so
|
|
// the relocation entries will actually be constants by the time the app
|
|
// starts up. However, we can't put this into a mergable section, because
|
|
// the linker doesn't take relocations into consideration when it tries to
|
|
// merge entries in the section.
|
|
if (ReloModel == Reloc::Static)
|
|
return SectionKind::getReadOnly();
|
|
|
|
// Otherwise, the dynamic linker needs to fix it up, put it in the
|
|
// writable data.rel.local section.
|
|
return SectionKind::getReadOnlyWithRelLocal();
|
|
|
|
case Constant::GlobalRelocations:
|
|
// In static relocation model, the linker will resolve all addresses, so
|
|
// the relocation entries will actually be constants by the time the app
|
|
// starts up. However, we can't put this into a mergable section, because
|
|
// the linker doesn't take relocations into consideration when it tries to
|
|
// merge entries in the section.
|
|
if (ReloModel == Reloc::Static)
|
|
return SectionKind::getReadOnly();
|
|
|
|
// Otherwise, the dynamic linker needs to fix it up, put it in the
|
|
// writable data.rel section.
|
|
return SectionKind::getReadOnlyWithRel();
|
|
}
|
|
}
|
|
|
|
// Okay, this isn't a constant. If the initializer for the global is going
|
|
// to require a runtime relocation by the dynamic linker, put it into a more
|
|
// specific section to improve startup time of the app. This coalesces these
|
|
// globals together onto fewer pages, improving the locality of the dynamic
|
|
// linker.
|
|
if (ReloModel == Reloc::Static)
|
|
return SectionKind::getDataNoRel();
|
|
|
|
switch (C->getRelocationInfo()) {
|
|
default: llvm_unreachable("unknown relocation info kind");
|
|
case Constant::NoRelocation:
|
|
return SectionKind::getDataNoRel();
|
|
case Constant::LocalRelocation:
|
|
return SectionKind::getDataRelLocal();
|
|
case Constant::GlobalRelocations:
|
|
return SectionKind::getDataRel();
|
|
}
|
|
}
|
|
|
|
/// SectionForGlobal - This method computes the appropriate section to emit
|
|
/// the specified global variable or function definition. This should not
|
|
/// be passed external (or available externally) globals.
|
|
const MCSection *TargetLoweringObjectFile::
|
|
SectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler *Mang,
|
|
const TargetMachine &TM) const {
|
|
// Select section name.
|
|
if (GV->hasSection())
|
|
return getExplicitSectionGlobal(GV, Kind, Mang, TM);
|
|
|
|
|
|
// Use default section depending on the 'type' of global
|
|
return SelectSectionForGlobal(GV, Kind, Mang, TM);
|
|
}
|
|
|
|
|
|
// Lame default implementation. Calculate the section name for global.
|
|
const MCSection *
|
|
TargetLoweringObjectFile::SelectSectionForGlobal(const GlobalValue *GV,
|
|
SectionKind Kind,
|
|
Mangler *Mang,
|
|
const TargetMachine &TM) const{
|
|
assert(!Kind.isThreadLocal() && "Doesn't support TLS");
|
|
|
|
if (Kind.isText())
|
|
return getTextSection();
|
|
|
|
if (Kind.isBSS() && BSSSection != 0)
|
|
return BSSSection;
|
|
|
|
if (Kind.isReadOnly() && ReadOnlySection != 0)
|
|
return ReadOnlySection;
|
|
|
|
return getDataSection();
|
|
}
|
|
|
|
/// getSectionForConstant - Given a mergable constant with the
|
|
/// specified size and relocation information, return a section that it
|
|
/// should be placed in.
|
|
const MCSection *
|
|
TargetLoweringObjectFile::getSectionForConstant(SectionKind Kind) const {
|
|
if (Kind.isReadOnly() && ReadOnlySection != 0)
|
|
return ReadOnlySection;
|
|
|
|
return DataSection;
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ELF
|
|
//===----------------------------------------------------------------------===//
|
|
typedef StringMap<const MCSectionELF*> ELFUniqueMapTy;
|
|
|
|
TargetLoweringObjectFileELF::~TargetLoweringObjectFileELF() {
|
|
// If we have the section uniquing map, free it.
|
|
delete (ELFUniqueMapTy*)UniquingMap;
|
|
}
|
|
|
|
const MCSection *TargetLoweringObjectFileELF::
|
|
getELFSection(StringRef Section, unsigned Type, unsigned Flags,
|
|
SectionKind Kind, bool IsExplicit) const {
|
|
if (UniquingMap == 0)
|
|
UniquingMap = new ELFUniqueMapTy();
|
|
ELFUniqueMapTy &Map = *(ELFUniqueMapTy*)UniquingMap;
|
|
|
|
// Do the lookup, if we have a hit, return it.
|
|
const MCSectionELF *&Entry = Map[Section];
|
|
if (Entry) return Entry;
|
|
|
|
return Entry = MCSectionELF::Create(Section, Type, Flags, Kind, IsExplicit,
|
|
getContext());
|
|
}
|
|
|
|
void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
|
|
const TargetMachine &TM) {
|
|
if (UniquingMap != 0)
|
|
((ELFUniqueMapTy*)UniquingMap)->clear();
|
|
TargetLoweringObjectFile::Initialize(Ctx, TM);
|
|
|
|
BSSSection =
|
|
getELFSection(".bss", MCSectionELF::SHT_NOBITS,
|
|
MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
|
|
SectionKind::getBSS());
|
|
|
|
TextSection =
|
|
getELFSection(".text", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_EXECINSTR | MCSectionELF::SHF_ALLOC,
|
|
SectionKind::getText());
|
|
|
|
DataSection =
|
|
getELFSection(".data", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
|
|
SectionKind::getDataRel());
|
|
|
|
ReadOnlySection =
|
|
getELFSection(".rodata", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC,
|
|
SectionKind::getReadOnly());
|
|
|
|
TLSDataSection =
|
|
getELFSection(".tdata", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_TLS |
|
|
MCSectionELF::SHF_WRITE, SectionKind::getThreadData());
|
|
|
|
TLSBSSSection =
|
|
getELFSection(".tbss", MCSectionELF::SHT_NOBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_TLS |
|
|
MCSectionELF::SHF_WRITE, SectionKind::getThreadBSS());
|
|
|
|
DataRelSection =
|
|
getELFSection(".data.rel", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getDataRel());
|
|
|
|
DataRelLocalSection =
|
|
getELFSection(".data.rel.local", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getDataRelLocal());
|
|
|
|
DataRelROSection =
|
|
getELFSection(".data.rel.ro", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getReadOnlyWithRel());
|
|
|
|
DataRelROLocalSection =
|
|
getELFSection(".data.rel.ro.local", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getReadOnlyWithRelLocal());
|
|
|
|
MergeableConst4Section =
|
|
getELFSection(".rodata.cst4", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_MERGE,
|
|
SectionKind::getMergeableConst4());
|
|
|
|
MergeableConst8Section =
|
|
getELFSection(".rodata.cst8", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_MERGE,
|
|
SectionKind::getMergeableConst8());
|
|
|
|
MergeableConst16Section =
|
|
getELFSection(".rodata.cst16", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_MERGE,
|
|
SectionKind::getMergeableConst16());
|
|
|
|
StaticCtorSection =
|
|
getELFSection(".ctors", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getDataRel());
|
|
|
|
StaticDtorSection =
|
|
getELFSection(".dtors", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getDataRel());
|
|
|
|
// Exception Handling Sections.
|
|
|
|
// FIXME: We're emitting LSDA info into a readonly section on ELF, even though
|
|
// it contains relocatable pointers. In PIC mode, this is probably a big
|
|
// runtime hit for C++ apps. Either the contents of the LSDA need to be
|
|
// adjusted or this should be a data section.
|
|
LSDASection =
|
|
getELFSection(".gcc_except_table", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC, SectionKind::getReadOnly());
|
|
EHFrameSection =
|
|
getELFSection(".eh_frame", MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC | MCSectionELF::SHF_WRITE,
|
|
SectionKind::getDataRel());
|
|
|
|
// Debug Info Sections.
|
|
DwarfAbbrevSection =
|
|
getELFSection(".debug_abbrev", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfInfoSection =
|
|
getELFSection(".debug_info", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfLineSection =
|
|
getELFSection(".debug_line", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfFrameSection =
|
|
getELFSection(".debug_frame", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfPubNamesSection =
|
|
getELFSection(".debug_pubnames", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfPubTypesSection =
|
|
getELFSection(".debug_pubtypes", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfStrSection =
|
|
getELFSection(".debug_str", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfLocSection =
|
|
getELFSection(".debug_loc", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfARangesSection =
|
|
getELFSection(".debug_aranges", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfRangesSection =
|
|
getELFSection(".debug_ranges", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
DwarfMacroInfoSection =
|
|
getELFSection(".debug_macinfo", MCSectionELF::SHT_PROGBITS, 0,
|
|
SectionKind::getMetadata());
|
|
}
|
|
|
|
|
|
static SectionKind
|
|
getELFKindForNamedSection(const char *Name, SectionKind K) {
|
|
if (Name[0] != '.') return K;
|
|
|
|
// Some lame default implementation based on some magic section names.
|
|
if (strncmp(Name, ".gnu.linkonce.b.", 16) == 0 ||
|
|
strncmp(Name, ".llvm.linkonce.b.", 17) == 0 ||
|
|
strncmp(Name, ".gnu.linkonce.sb.", 17) == 0 ||
|
|
strncmp(Name, ".llvm.linkonce.sb.", 18) == 0)
|
|
return SectionKind::getBSS();
|
|
|
|
if (strcmp(Name, ".tdata") == 0 ||
|
|
strncmp(Name, ".tdata.", 7) == 0 ||
|
|
strncmp(Name, ".gnu.linkonce.td.", 17) == 0 ||
|
|
strncmp(Name, ".llvm.linkonce.td.", 18) == 0)
|
|
return SectionKind::getThreadData();
|
|
|
|
if (strcmp(Name, ".tbss") == 0 ||
|
|
strncmp(Name, ".tbss.", 6) == 0 ||
|
|
strncmp(Name, ".gnu.linkonce.tb.", 17) == 0 ||
|
|
strncmp(Name, ".llvm.linkonce.tb.", 18) == 0)
|
|
return SectionKind::getThreadBSS();
|
|
|
|
return K;
|
|
}
|
|
|
|
|
|
static unsigned
|
|
getELFSectionType(const char *Name, SectionKind K) {
|
|
|
|
if (strcmp(Name, ".init_array") == 0)
|
|
return MCSectionELF::SHT_INIT_ARRAY;
|
|
|
|
if (strcmp(Name, ".fini_array") == 0)
|
|
return MCSectionELF::SHT_FINI_ARRAY;
|
|
|
|
if (strcmp(Name, ".preinit_array") == 0)
|
|
return MCSectionELF::SHT_PREINIT_ARRAY;
|
|
|
|
if (K.isBSS() || K.isThreadBSS())
|
|
return MCSectionELF::SHT_NOBITS;
|
|
|
|
return MCSectionELF::SHT_PROGBITS;
|
|
}
|
|
|
|
|
|
static unsigned
|
|
getELFSectionFlags(SectionKind K) {
|
|
unsigned Flags = 0;
|
|
|
|
if (!K.isMetadata())
|
|
Flags |= MCSectionELF::SHF_ALLOC;
|
|
|
|
if (K.isText())
|
|
Flags |= MCSectionELF::SHF_EXECINSTR;
|
|
|
|
if (K.isWriteable())
|
|
Flags |= MCSectionELF::SHF_WRITE;
|
|
|
|
if (K.isThreadLocal())
|
|
Flags |= MCSectionELF::SHF_TLS;
|
|
|
|
// K.isMergeableConst() is left out to honour PR4650
|
|
if (K.isMergeableCString() || K.isMergeableConst4() ||
|
|
K.isMergeableConst8() || K.isMergeableConst16())
|
|
Flags |= MCSectionELF::SHF_MERGE;
|
|
|
|
if (K.isMergeableCString())
|
|
Flags |= MCSectionELF::SHF_STRINGS;
|
|
|
|
return Flags;
|
|
}
|
|
|
|
|
|
const MCSection *TargetLoweringObjectFileELF::
|
|
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
const char *SectionName = GV->getSection().c_str();
|
|
|
|
// Infer section flags from the section name if we can.
|
|
Kind = getELFKindForNamedSection(SectionName, Kind);
|
|
|
|
return getELFSection(SectionName,
|
|
getELFSectionType(SectionName, Kind),
|
|
getELFSectionFlags(Kind), Kind, true);
|
|
}
|
|
|
|
static const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) {
|
|
if (Kind.isText()) return ".gnu.linkonce.t.";
|
|
if (Kind.isReadOnly()) return ".gnu.linkonce.r.";
|
|
|
|
if (Kind.isThreadData()) return ".gnu.linkonce.td.";
|
|
if (Kind.isThreadBSS()) return ".gnu.linkonce.tb.";
|
|
|
|
if (Kind.isBSS()) return ".gnu.linkonce.b.";
|
|
if (Kind.isDataNoRel()) return ".gnu.linkonce.d.";
|
|
if (Kind.isDataRelLocal()) return ".gnu.linkonce.d.rel.local.";
|
|
if (Kind.isDataRel()) return ".gnu.linkonce.d.rel.";
|
|
if (Kind.isReadOnlyWithRelLocal()) return ".gnu.linkonce.d.rel.ro.local.";
|
|
|
|
assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
|
|
return ".gnu.linkonce.d.rel.ro.";
|
|
}
|
|
|
|
const MCSection *TargetLoweringObjectFileELF::
|
|
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
|
|
// If this global is linkonce/weak and the target handles this by emitting it
|
|
// into a 'uniqued' section name, create and return the section now.
|
|
if (GV->isWeakForLinker()) {
|
|
const char *Prefix = getSectionPrefixForUniqueGlobal(Kind);
|
|
std::string Name = Mang->makeNameProper(GV->getNameStr());
|
|
|
|
return getELFSection((Prefix+Name).c_str(),
|
|
getELFSectionType((Prefix+Name).c_str(), Kind),
|
|
getELFSectionFlags(Kind),
|
|
Kind);
|
|
}
|
|
|
|
if (Kind.isText()) return TextSection;
|
|
|
|
if (Kind.isMergeable1ByteCString() ||
|
|
Kind.isMergeable2ByteCString() ||
|
|
Kind.isMergeable4ByteCString()) {
|
|
|
|
// We also need alignment here.
|
|
// FIXME: this is getting the alignment of the character, not the
|
|
// alignment of the global!
|
|
unsigned Align =
|
|
TM.getTargetData()->getPreferredAlignment(cast<GlobalVariable>(GV));
|
|
|
|
const char *SizeSpec = ".rodata.str1.";
|
|
if (Kind.isMergeable2ByteCString())
|
|
SizeSpec = ".rodata.str2.";
|
|
else if (Kind.isMergeable4ByteCString())
|
|
SizeSpec = ".rodata.str4.";
|
|
else
|
|
assert(Kind.isMergeable1ByteCString() && "unknown string width");
|
|
|
|
|
|
std::string Name = SizeSpec + utostr(Align);
|
|
return getELFSection(Name.c_str(), MCSectionELF::SHT_PROGBITS,
|
|
MCSectionELF::SHF_ALLOC |
|
|
MCSectionELF::SHF_MERGE |
|
|
MCSectionELF::SHF_STRINGS,
|
|
Kind);
|
|
}
|
|
|
|
if (Kind.isMergeableConst()) {
|
|
if (Kind.isMergeableConst4() && MergeableConst4Section)
|
|
return MergeableConst4Section;
|
|
if (Kind.isMergeableConst8() && MergeableConst8Section)
|
|
return MergeableConst8Section;
|
|
if (Kind.isMergeableConst16() && MergeableConst16Section)
|
|
return MergeableConst16Section;
|
|
return ReadOnlySection; // .const
|
|
}
|
|
|
|
if (Kind.isReadOnly()) return ReadOnlySection;
|
|
|
|
if (Kind.isThreadData()) return TLSDataSection;
|
|
if (Kind.isThreadBSS()) return TLSBSSSection;
|
|
|
|
if (Kind.isBSS()) return BSSSection;
|
|
|
|
if (Kind.isDataNoRel()) return DataSection;
|
|
if (Kind.isDataRelLocal()) return DataRelLocalSection;
|
|
if (Kind.isDataRel()) return DataRelSection;
|
|
if (Kind.isReadOnlyWithRelLocal()) return DataRelROLocalSection;
|
|
|
|
assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
|
|
return DataRelROSection;
|
|
}
|
|
|
|
/// getSectionForConstant - Given a mergeable constant with the
|
|
/// specified size and relocation information, return a section that it
|
|
/// should be placed in.
|
|
const MCSection *TargetLoweringObjectFileELF::
|
|
getSectionForConstant(SectionKind Kind) const {
|
|
if (Kind.isMergeableConst4() && MergeableConst4Section)
|
|
return MergeableConst4Section;
|
|
if (Kind.isMergeableConst8() && MergeableConst8Section)
|
|
return MergeableConst8Section;
|
|
if (Kind.isMergeableConst16() && MergeableConst16Section)
|
|
return MergeableConst16Section;
|
|
if (Kind.isReadOnly())
|
|
return ReadOnlySection;
|
|
|
|
if (Kind.isReadOnlyWithRelLocal()) return DataRelROLocalSection;
|
|
assert(Kind.isReadOnlyWithRel() && "Unknown section kind");
|
|
return DataRelROSection;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MachO
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
typedef StringMap<const MCSectionMachO*> MachOUniqueMapTy;
|
|
|
|
TargetLoweringObjectFileMachO::~TargetLoweringObjectFileMachO() {
|
|
// If we have the MachO uniquing map, free it.
|
|
delete (MachOUniqueMapTy*)UniquingMap;
|
|
}
|
|
|
|
|
|
const MCSectionMachO *TargetLoweringObjectFileMachO::
|
|
getMachOSection(const StringRef &Segment, const StringRef &Section,
|
|
unsigned TypeAndAttributes,
|
|
unsigned Reserved2, SectionKind Kind) const {
|
|
// We unique sections by their segment/section pair. The returned section
|
|
// may not have the same flags as the requested section, if so this should be
|
|
// diagnosed by the client as an error.
|
|
|
|
// Create the map if it doesn't already exist.
|
|
if (UniquingMap == 0)
|
|
UniquingMap = new MachOUniqueMapTy();
|
|
MachOUniqueMapTy &Map = *(MachOUniqueMapTy*)UniquingMap;
|
|
|
|
// Form the name to look up.
|
|
SmallString<64> Name;
|
|
Name.append(Segment.begin(), Segment.end());
|
|
Name.push_back(',');
|
|
Name.append(Section.begin(), Section.end());
|
|
|
|
// Do the lookup, if we have a hit, return it.
|
|
const MCSectionMachO *&Entry = Map[StringRef(Name.data(), Name.size())];
|
|
if (Entry) return Entry;
|
|
|
|
// Otherwise, return a new section.
|
|
return Entry = MCSectionMachO::Create(Segment, Section, TypeAndAttributes,
|
|
Reserved2, Kind, getContext());
|
|
}
|
|
|
|
|
|
void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
|
|
const TargetMachine &TM) {
|
|
if (UniquingMap != 0)
|
|
((MachOUniqueMapTy*)UniquingMap)->clear();
|
|
TargetLoweringObjectFile::Initialize(Ctx, TM);
|
|
|
|
TextSection // .text
|
|
= getMachOSection("__TEXT", "__text",
|
|
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
|
|
SectionKind::getText());
|
|
DataSection // .data
|
|
= getMachOSection("__DATA", "__data", 0, SectionKind::getDataRel());
|
|
|
|
CStringSection // .cstring
|
|
= getMachOSection("__TEXT", "__cstring", MCSectionMachO::S_CSTRING_LITERALS,
|
|
SectionKind::getMergeable1ByteCString());
|
|
UStringSection
|
|
= getMachOSection("__TEXT","__ustring", 0,
|
|
SectionKind::getMergeable2ByteCString());
|
|
FourByteConstantSection // .literal4
|
|
= getMachOSection("__TEXT", "__literal4", MCSectionMachO::S_4BYTE_LITERALS,
|
|
SectionKind::getMergeableConst4());
|
|
EightByteConstantSection // .literal8
|
|
= getMachOSection("__TEXT", "__literal8", MCSectionMachO::S_8BYTE_LITERALS,
|
|
SectionKind::getMergeableConst8());
|
|
|
|
// ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
|
|
// to using it in -static mode.
|
|
SixteenByteConstantSection = 0;
|
|
if (TM.getRelocationModel() != Reloc::Static &&
|
|
TM.getTargetData()->getPointerSize() == 32)
|
|
SixteenByteConstantSection = // .literal16
|
|
getMachOSection("__TEXT", "__literal16",MCSectionMachO::S_16BYTE_LITERALS,
|
|
SectionKind::getMergeableConst16());
|
|
|
|
ReadOnlySection // .const
|
|
= getMachOSection("__TEXT", "__const", 0, SectionKind::getReadOnly());
|
|
|
|
TextCoalSection
|
|
= getMachOSection("__TEXT", "__textcoal_nt",
|
|
MCSectionMachO::S_COALESCED |
|
|
MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
|
|
SectionKind::getText());
|
|
ConstTextCoalSection
|
|
= getMachOSection("__TEXT", "__const_coal", MCSectionMachO::S_COALESCED,
|
|
SectionKind::getText());
|
|
ConstDataCoalSection
|
|
= getMachOSection("__DATA","__const_coal", MCSectionMachO::S_COALESCED,
|
|
SectionKind::getText());
|
|
ConstDataSection // .const_data
|
|
= getMachOSection("__DATA", "__const", 0,
|
|
SectionKind::getReadOnlyWithRel());
|
|
DataCoalSection
|
|
= getMachOSection("__DATA","__datacoal_nt", MCSectionMachO::S_COALESCED,
|
|
SectionKind::getDataRel());
|
|
|
|
|
|
LazySymbolPointerSection
|
|
= getMachOSection("__DATA", "__la_symbol_ptr",
|
|
MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
|
|
SectionKind::getMetadata());
|
|
NonLazySymbolPointerSection
|
|
= getMachOSection("__DATA", "__nl_symbol_ptr",
|
|
MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
|
|
SectionKind::getMetadata());
|
|
|
|
if (TM.getRelocationModel() == Reloc::Static) {
|
|
StaticCtorSection
|
|
= getMachOSection("__TEXT", "__constructor", 0,SectionKind::getDataRel());
|
|
StaticDtorSection
|
|
= getMachOSection("__TEXT", "__destructor", 0, SectionKind::getDataRel());
|
|
} else {
|
|
StaticCtorSection
|
|
= getMachOSection("__DATA", "__mod_init_func",
|
|
MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
|
|
SectionKind::getDataRel());
|
|
StaticDtorSection
|
|
= getMachOSection("__DATA", "__mod_term_func",
|
|
MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
|
|
SectionKind::getDataRel());
|
|
}
|
|
|
|
// Exception Handling.
|
|
LSDASection = getMachOSection("__DATA", "__gcc_except_tab", 0,
|
|
SectionKind::getDataRel());
|
|
EHFrameSection =
|
|
getMachOSection("__TEXT", "__eh_frame",
|
|
MCSectionMachO::S_COALESCED |
|
|
MCSectionMachO::S_ATTR_NO_TOC |
|
|
MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
|
|
MCSectionMachO::S_ATTR_LIVE_SUPPORT,
|
|
SectionKind::getReadOnly());
|
|
|
|
// Debug Information.
|
|
DwarfAbbrevSection =
|
|
getMachOSection("__DWARF", "__debug_abbrev", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfInfoSection =
|
|
getMachOSection("__DWARF", "__debug_info", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfLineSection =
|
|
getMachOSection("__DWARF", "__debug_line", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfFrameSection =
|
|
getMachOSection("__DWARF", "__debug_frame", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfPubNamesSection =
|
|
getMachOSection("__DWARF", "__debug_pubnames", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfPubTypesSection =
|
|
getMachOSection("__DWARF", "__debug_pubtypes", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfStrSection =
|
|
getMachOSection("__DWARF", "__debug_str", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfLocSection =
|
|
getMachOSection("__DWARF", "__debug_loc", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfARangesSection =
|
|
getMachOSection("__DWARF", "__debug_aranges", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfRangesSection =
|
|
getMachOSection("__DWARF", "__debug_ranges", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfMacroInfoSection =
|
|
getMachOSection("__DWARF", "__debug_macinfo", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
DwarfDebugInlineSection =
|
|
getMachOSection("__DWARF", "__debug_inlined", MCSectionMachO::S_ATTR_DEBUG,
|
|
SectionKind::getMetadata());
|
|
}
|
|
|
|
const MCSection *TargetLoweringObjectFileMachO::
|
|
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
// Parse the section specifier and create it if valid.
|
|
StringRef Segment, Section;
|
|
unsigned TAA, StubSize;
|
|
std::string ErrorCode =
|
|
MCSectionMachO::ParseSectionSpecifier(GV->getSection(), Segment, Section,
|
|
TAA, StubSize);
|
|
if (!ErrorCode.empty()) {
|
|
// If invalid, report the error with llvm_report_error.
|
|
llvm_report_error("Global variable '" + GV->getNameStr() +
|
|
"' has an invalid section specifier '" + GV->getSection()+
|
|
"': " + ErrorCode + ".");
|
|
// Fall back to dropping it into the data section.
|
|
return DataSection;
|
|
}
|
|
|
|
// Get the section.
|
|
const MCSectionMachO *S =
|
|
getMachOSection(Segment, Section, TAA, StubSize, Kind);
|
|
|
|
// Okay, now that we got the section, verify that the TAA & StubSize agree.
|
|
// If the user declared multiple globals with different section flags, we need
|
|
// to reject it here.
|
|
if (S->getTypeAndAttributes() != TAA || S->getStubSize() != StubSize) {
|
|
// If invalid, report the error with llvm_report_error.
|
|
llvm_report_error("Global variable '" + GV->getNameStr() +
|
|
"' section type or attributes does not match previous"
|
|
" section specifier");
|
|
}
|
|
|
|
return S;
|
|
}
|
|
|
|
const MCSection *TargetLoweringObjectFileMachO::
|
|
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
|
|
|
|
if (Kind.isText())
|
|
return GV->isWeakForLinker() ? TextCoalSection : TextSection;
|
|
|
|
// If this is weak/linkonce, put this in a coalescable section, either in text
|
|
// or data depending on if it is writable.
|
|
if (GV->isWeakForLinker()) {
|
|
if (Kind.isReadOnly())
|
|
return ConstTextCoalSection;
|
|
return DataCoalSection;
|
|
}
|
|
|
|
// FIXME: Alignment check should be handled by section classifier.
|
|
if (Kind.isMergeable1ByteCString() ||
|
|
Kind.isMergeable2ByteCString()) {
|
|
if (TM.getTargetData()->getPreferredAlignment(
|
|
cast<GlobalVariable>(GV)) < 32) {
|
|
if (Kind.isMergeable1ByteCString())
|
|
return CStringSection;
|
|
assert(Kind.isMergeable2ByteCString());
|
|
return UStringSection;
|
|
}
|
|
}
|
|
|
|
if (Kind.isMergeableConst()) {
|
|
if (Kind.isMergeableConst4())
|
|
return FourByteConstantSection;
|
|
if (Kind.isMergeableConst8())
|
|
return EightByteConstantSection;
|
|
if (Kind.isMergeableConst16() && SixteenByteConstantSection)
|
|
return SixteenByteConstantSection;
|
|
}
|
|
|
|
// Otherwise, if it is readonly, but not something we can specially optimize,
|
|
// just drop it in .const.
|
|
if (Kind.isReadOnly())
|
|
return ReadOnlySection;
|
|
|
|
// If this is marked const, put it into a const section. But if the dynamic
|
|
// linker needs to write to it, put it in the data segment.
|
|
if (Kind.isReadOnlyWithRel())
|
|
return ConstDataSection;
|
|
|
|
// Otherwise, just drop the variable in the normal data section.
|
|
return DataSection;
|
|
}
|
|
|
|
const MCSection *
|
|
TargetLoweringObjectFileMachO::getSectionForConstant(SectionKind Kind) const {
|
|
// If this constant requires a relocation, we have to put it in the data
|
|
// segment, not in the text segment.
|
|
if (Kind.isDataRel())
|
|
return ConstDataSection;
|
|
|
|
if (Kind.isMergeableConst4())
|
|
return FourByteConstantSection;
|
|
if (Kind.isMergeableConst8())
|
|
return EightByteConstantSection;
|
|
if (Kind.isMergeableConst16() && SixteenByteConstantSection)
|
|
return SixteenByteConstantSection;
|
|
return ReadOnlySection; // .const
|
|
}
|
|
|
|
/// shouldEmitUsedDirectiveFor - This hook allows targets to selectively decide
|
|
/// not to emit the UsedDirective for some symbols in llvm.used.
|
|
// FIXME: REMOVE this (rdar://7071300)
|
|
bool TargetLoweringObjectFileMachO::
|
|
shouldEmitUsedDirectiveFor(const GlobalValue *GV, Mangler *Mang) const {
|
|
/// On Darwin, internally linked data beginning with "L" or "l" does not have
|
|
/// the directive emitted (this occurs in ObjC metadata).
|
|
if (!GV) return false;
|
|
|
|
// Check whether the mangled name has the "Private" or "LinkerPrivate" prefix.
|
|
if (GV->hasLocalLinkage() && !isa<Function>(GV)) {
|
|
// FIXME: ObjC metadata is currently emitted as internal symbols that have
|
|
// \1L and \0l prefixes on them. Fix them to be Private/LinkerPrivate and
|
|
// this horrible hack can go away.
|
|
const std::string &Name = Mang->getMangledName(GV);
|
|
if (Name[0] == 'L' || Name[0] == 'l')
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// COFF
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
|
|
|
|
TargetLoweringObjectFileCOFF::~TargetLoweringObjectFileCOFF() {
|
|
delete (COFFUniqueMapTy*)UniquingMap;
|
|
}
|
|
|
|
|
|
const MCSection *TargetLoweringObjectFileCOFF::
|
|
getCOFFSection(const char *Name, bool isDirective, SectionKind Kind) const {
|
|
// Create the map if it doesn't already exist.
|
|
if (UniquingMap == 0)
|
|
UniquingMap = new MachOUniqueMapTy();
|
|
COFFUniqueMapTy &Map = *(COFFUniqueMapTy*)UniquingMap;
|
|
|
|
// Do the lookup, if we have a hit, return it.
|
|
const MCSectionCOFF *&Entry = Map[Name];
|
|
if (Entry) return Entry;
|
|
|
|
return Entry = MCSectionCOFF::Create(Name, isDirective, Kind, getContext());
|
|
}
|
|
|
|
void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
|
|
const TargetMachine &TM) {
|
|
if (UniquingMap != 0)
|
|
((COFFUniqueMapTy*)UniquingMap)->clear();
|
|
TargetLoweringObjectFile::Initialize(Ctx, TM);
|
|
TextSection = getCOFFSection("\t.text", true, SectionKind::getText());
|
|
DataSection = getCOFFSection("\t.data", true, SectionKind::getDataRel());
|
|
StaticCtorSection =
|
|
getCOFFSection(".ctors", false, SectionKind::getDataRel());
|
|
StaticDtorSection =
|
|
getCOFFSection(".dtors", false, SectionKind::getDataRel());
|
|
|
|
|
|
// Debug info.
|
|
// FIXME: Don't use 'directive' mode here.
|
|
DwarfAbbrevSection =
|
|
getCOFFSection("\t.section\t.debug_abbrev,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfInfoSection =
|
|
getCOFFSection("\t.section\t.debug_info,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfLineSection =
|
|
getCOFFSection("\t.section\t.debug_line,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfFrameSection =
|
|
getCOFFSection("\t.section\t.debug_frame,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfPubNamesSection =
|
|
getCOFFSection("\t.section\t.debug_pubnames,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfPubTypesSection =
|
|
getCOFFSection("\t.section\t.debug_pubtypes,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfStrSection =
|
|
getCOFFSection("\t.section\t.debug_str,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfLocSection =
|
|
getCOFFSection("\t.section\t.debug_loc,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfARangesSection =
|
|
getCOFFSection("\t.section\t.debug_aranges,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfRangesSection =
|
|
getCOFFSection("\t.section\t.debug_ranges,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
DwarfMacroInfoSection =
|
|
getCOFFSection("\t.section\t.debug_macinfo,\"dr\"",
|
|
true, SectionKind::getMetadata());
|
|
}
|
|
|
|
const MCSection *TargetLoweringObjectFileCOFF::
|
|
getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
return getCOFFSection(GV->getSection().c_str(), false, Kind);
|
|
}
|
|
|
|
static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
|
|
if (Kind.isText())
|
|
return ".text$linkonce";
|
|
if (Kind.isWriteable())
|
|
return ".data$linkonce";
|
|
return ".rdata$linkonce";
|
|
}
|
|
|
|
|
|
const MCSection *TargetLoweringObjectFileCOFF::
|
|
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
|
|
Mangler *Mang, const TargetMachine &TM) const {
|
|
assert(!Kind.isThreadLocal() && "Doesn't support TLS");
|
|
|
|
// If this global is linkonce/weak and the target handles this by emitting it
|
|
// into a 'uniqued' section name, create and return the section now.
|
|
if (GV->isWeakForLinker()) {
|
|
const char *Prefix = getCOFFSectionPrefixForUniqueGlobal(Kind);
|
|
std::string Name = Mang->makeNameProper(GV->getNameStr());
|
|
return getCOFFSection((Prefix+Name).c_str(), false, Kind);
|
|
}
|
|
|
|
if (Kind.isText())
|
|
return getTextSection();
|
|
|
|
return getDataSection();
|
|
}
|
|
|