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Eliminate SectionFlags, just embed a SectionKind into Section

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instead and drive things based off of that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77184 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-07-27 05:32:16 +00:00
parent 1f5c988754
commit 5fe575ff4f
24 changed files with 190 additions and 238 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/llvm/Target/ELFTargetAsmInfo.h
View File

@@ -31,18 +31,15 @@ namespace llvm {
virtual const Section * virtual const Section *
getSectionForMergeableConstant(SectionKind Kind) const; getSectionForMergeableConstant(SectionKind Kind) const;
/// getFlagsForNamedSection - If this target wants to be able to infer virtual SectionKind::Kind getKindForNamedSection(const char *Section,
/// section flags based on the name of the section specified for a global SectionKind::Kind K) const;
/// variable, it can implement this. This is used on ELF systems so that void getSectionFlagsAsString(SectionKind Kind,
/// ".tbss" gets the TLS bit set etc. SmallVectorImpl<char> &Str) const;
virtual unsigned getFlagsForNamedSection(const char *Section) const;
const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) const; const char *getSectionPrefixForUniqueGlobal(SectionKind Kind) const;
virtual const Section* SelectSectionForGlobal(const GlobalValue *GV, virtual const Section* SelectSectionForGlobal(const GlobalValue *GV,
SectionKind Kind) const; SectionKind Kind) const;
virtual void getSectionFlags(unsigned Flags,
SmallVectorImpl<char> &Str) const;
const Section *DataRelSection; const Section *DataRelSection;
const Section *DataRelLocalSection; const Section *DataRelLocalSection;

84
include/llvm/Target/TargetAsmInfo.h
View File

@@ -22,6 +22,9 @@
namespace llvm { namespace llvm {
template <typename T> class SmallVectorImpl; template <typename T> class SmallVectorImpl;
class TargetMachine;
class GlobalValue;
class Mangler;
// DWARF encoding query type // DWARF encoding query type
namespace DwarfEncoding { namespace DwarfEncoding {
@@ -39,8 +42,12 @@ namespace llvm {
/// ///
/// The comments below describe these as if they were an inheritance hierarchy /// The comments below describe these as if they were an inheritance hierarchy
/// in order to explain the predicates below. /// in order to explain the predicates below.
struct SectionKind { class SectionKind {
public:
enum Kind { enum Kind {
/// Metadata - Debug info sections or other metadata.
Metadata,
/// Text - Text section, used for functions and other executable code. /// Text - Text section, used for functions and other executable code.
Text, Text,
@@ -140,6 +147,8 @@ namespace llvm {
bool isWeak() const { return Weak; } bool isWeak() const { return Weak; }
bool hasExplicitSection() const { return ExplicitSection; } bool hasExplicitSection() const { return ExplicitSection; }
bool isMetadata() const { return K == Metadata; }
bool isText() const { return K == Text; } bool isText() const { return K == Text; }
bool isReadOnly() const { bool isReadOnly() const {
@@ -191,7 +200,7 @@ namespace llvm {
return K == ReadOnlyWithRelLocal; return K == ReadOnlyWithRelLocal;
} }
static SectionKind get(Kind K, bool isWeak, static SectionKind get(Kind K, bool isWeak = false,
bool hasExplicitSection = false) { bool hasExplicitSection = false) {
SectionKind Res; SectionKind Res;
Res.K = K; Res.K = K;
@@ -201,65 +210,18 @@ namespace llvm {
} }
}; };
namespace SectionFlags {
const unsigned Invalid = -1U;
const unsigned None = 0;
const unsigned Code = 1 << 0; ///< Section contains code
const unsigned Writable = 1 << 1; ///< Section is writeable
const unsigned BSS = 1 << 2; ///< Section contains only zeroes
const unsigned Mergeable = 1 << 3; ///< Section contains mergeable data
const unsigned Strings = 1 << 4; ///< Section contains C-type strings
const unsigned TLS = 1 << 5; ///< Section contains thread-local data
const unsigned Debug = 1 << 6; ///< Section contains debug data
const unsigned Linkonce = 1 << 7; ///< Section is linkonce
const unsigned TypeFlags = 0xFF;
// Some gap for future flags
/// Named - True if this section should be printed with ".section <name>",
/// false if the section name is something like ".const".
const unsigned Named = 1 << 23; ///< Section is named
const unsigned EntitySize = 0xFF << 24; ///< Entity size for mergeable stuff
static inline unsigned getEntitySize(unsigned Flags) {
return (Flags >> 24) & 0xFF;
}
// FIXME: Why does this return a value?
static inline unsigned setEntitySize(unsigned Flags, unsigned Size) {
return (Flags & ~EntitySize) | ((Size & 0xFF) << 24);
}
struct KeyInfo {
static inline unsigned getEmptyKey() { return Invalid; }
static inline unsigned getTombstoneKey() { return Invalid - 1; }
static unsigned getHashValue(const unsigned &Key) { return Key; }
static bool isEqual(unsigned LHS, unsigned RHS) { return LHS == RHS; }
static bool isPod() { return true; }
};
}
class TargetMachine;
class CallInst;
class GlobalValue;
class Type;
class Mangler;
class Section { class Section {
friend class TargetAsmInfo; friend class TargetAsmInfo;
friend class StringMapEntry<Section>; friend class StringMapEntry<Section>;
friend class StringMap<Section>; friend class StringMap<Section>;
std::string Name; std::string Name;
unsigned Flags; SectionKind Kind;
explicit Section(unsigned F = SectionFlags::Invalid) : Flags(F) { } explicit Section() { }
public: public:
unsigned getEntitySize() const { return (Flags >> 24) & 0xFF; }
const std::string &getName() const { return Name; } const std::string &getName() const { return Name; }
unsigned getFlags() const { return Flags; } SectionKind getKind() const { return Kind; }
bool hasFlag(unsigned F) const { return (Flags & F) != 0; }
}; };
/// TargetAsmInfo - This class is intended to be used as a base class for asm /// TargetAsmInfo - This class is intended to be used as a base class for asm
@@ -678,9 +640,9 @@ namespace llvm {
virtual ~TargetAsmInfo(); virtual ~TargetAsmInfo();
const Section* getNamedSection(const char *Name, const Section* getNamedSection(const char *Name,
unsigned Flags = SectionFlags::None) const; SectionKind::Kind K) const;
const Section* getUnnamedSection(const char *Directive, const Section* getUnnamedSection(const char *Directive,
unsigned Flags = SectionFlags::None) const; SectionKind::Kind K) const;
/// Measure the specified inline asm to determine an approximation of its /// Measure the specified inline asm to determine an approximation of its
/// length. /// length.
@@ -717,12 +679,13 @@ namespace llvm {
return 0; return 0;
} }
/// getFlagsForNamedSection - If this target wants to be able to infer /// getKindForNamedSection - If this target wants to be able to override
/// section flags based on the name of the section specified for a global /// section flags based on the name of the section specified for a global
/// variable, it can implement this. This is used on ELF systems so that /// variable, it can implement this. This is used on ELF systems so that
/// ".tbss" gets the TLS bit set etc. /// ".tbss" gets the TLS bit set etc.
virtual unsigned getFlagsForNamedSection(const char *Section) const { virtual SectionKind::Kind getKindForNamedSection(const char *Section,
return 0; SectionKind::Kind K) const{
return K;
} }
/// SectionForGlobal - This method computes the appropriate section to emit /// SectionForGlobal - This method computes the appropriate section to emit
@@ -741,9 +704,10 @@ namespace llvm {
return 0; return 0;
} }
/// Turn the specified flags into a string that can be printed to the /// getSectionFlagsAsString - Turn the flags in the specified SectionKind
/// assembly file. /// into a string that can be printed to the assembly file after the
virtual void getSectionFlags(unsigned Flags, /// ".section foo" part of a section directive.
virtual void getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const { SmallVectorImpl<char> &Str) const {
} }

20
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@@ -117,8 +117,8 @@ void AsmPrinter::SwitchToDataSection(const char *NewSection,
/// SwitchToSection - Switch to the specified section of the executable if we /// SwitchToSection - Switch to the specified section of the executable if we
/// are not already in it! /// are not already in it!
void AsmPrinter::SwitchToSection(const Section* NS) { void AsmPrinter::SwitchToSection(const Section *NS) {
const std::string& NewSection = NS->getName(); const std::string &NewSection = NS->getName();
// If we're already in this section, we're done. // If we're already in this section, we're done.
if (CurrentSection == NewSection) return; if (CurrentSection == NewSection) return;
@@ -135,20 +135,20 @@ void AsmPrinter::SwitchToSection(const Section* NS) {
// If section is named we need to switch into it via special '.section' // If section is named we need to switch into it via special '.section'
// directive and also append funky flags. Otherwise - section name is just // directive and also append funky flags. Otherwise - section name is just
// some magic assembler directive. // some magic assembler directive.
if (NS->hasFlag(SectionFlags::Named)) { if (NS->getKind().hasExplicitSection()) {
O << TAI->getSwitchToSectionDirective()
<< CurrentSection;
SmallString<32> FlagsStr; SmallString<32> FlagsStr;
TAI->getSectionFlags(NS->getFlags(), FlagsStr); TAI->getSectionFlagsAsString(NS->getKind(), FlagsStr);
O << FlagsStr.c_str();
O << TAI->getSwitchToSectionDirective()
<< CurrentSection
<< FlagsStr.c_str();
} else { } else {
O << CurrentSection; O << CurrentSection;
} }
O << TAI->getDataSectionStartSuffix() << '\n'; O << TAI->getDataSectionStartSuffix() << '\n';
} }
IsInTextSection = (NS->getFlags() & SectionFlags::Code); IsInTextSection = NS->getKind().isText();
} }
void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const { void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
@@ -404,7 +404,7 @@ void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
bool JTInDiffSection = false; bool JTInDiffSection = false;
if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) || if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
!JumpTableDataSection || !JumpTableDataSection ||
FuncSection->hasFlag(SectionFlags::Linkonce)) { FuncSection->getKind().isWeak()) {
// In PIC mode, we need to emit the jump table to the same section as the // In PIC mode, we need to emit the jump table to the same section as the
// function body itself, otherwise the label differences won't make sense. // function body itself, otherwise the label differences won't make sense.
// We should also do if the section name is NULL or function is declared in // We should also do if the section name is NULL or function is declared in

14
lib/CodeGen/ELFWriter.cpp
View File

@@ -228,18 +228,18 @@ unsigned ELFWriter::getGlobalELFType(const GlobalValue *GV) {
// getElfSectionFlags - Get the ELF Section Header flags based // getElfSectionFlags - Get the ELF Section Header flags based
// on the flags defined in ELFTargetAsmInfo. // on the flags defined in ELFTargetAsmInfo.
unsigned ELFWriter::getElfSectionFlags(unsigned Flags) { unsigned ELFWriter::getElfSectionFlags(SectionKind Kind) {
unsigned ElfSectionFlags = ELFSection::SHF_ALLOC; unsigned ElfSectionFlags = ELFSection::SHF_ALLOC;
if (Flags & SectionFlags::Code) if (Kind.isText())
ElfSectionFlags |= ELFSection::SHF_EXECINSTR; ElfSectionFlags |= ELFSection::SHF_EXECINSTR;
if (Flags & SectionFlags::Writable) if (Kind.isWriteable())
ElfSectionFlags |= ELFSection::SHF_WRITE; ElfSectionFlags |= ELFSection::SHF_WRITE;
if (Flags & SectionFlags::Mergeable) if (Kind.isMergeableConst())
ElfSectionFlags |= ELFSection::SHF_MERGE; ElfSectionFlags |= ELFSection::SHF_MERGE;
if (Flags & SectionFlags::TLS) if (Kind.isThreadLocal())
ElfSectionFlags |= ELFSection::SHF_TLS; ElfSectionFlags |= ELFSection::SHF_TLS;
if (Flags & SectionFlags::Strings) if (Kind.isMergeableCString())
ElfSectionFlags |= ELFSection::SHF_STRINGS; ElfSectionFlags |= ELFSection::SHF_STRINGS;
return ElfSectionFlags; return ElfSectionFlags;
@@ -293,7 +293,7 @@ void ELFWriter::EmitGlobal(const GlobalValue *GV) {
// Get ELF section from TAI // Get ELF section from TAI
const Section *S = TAI->SectionForGlobal(GV); const Section *S = TAI->SectionForGlobal(GV);
unsigned SectionFlags = getElfSectionFlags(S->getFlags()); unsigned SectionFlags = getElfSectionFlags(S->getKind());
// The symbol align should update the section alignment if needed // The symbol align should update the section alignment if needed
const TargetData *TD = TM.getTargetData(); const TargetData *TD = TM.getTargetData();

3
lib/CodeGen/ELFWriter.h
View File

@@ -34,6 +34,7 @@ namespace llvm {
class TargetAsmInfo; class TargetAsmInfo;
class TargetELFWriterInfo; class TargetELFWriterInfo;
class raw_ostream; class raw_ostream;
class SectionKind;
typedef std::vector<ELFSym*>::iterator ELFSymIter; typedef std::vector<ELFSym*>::iterator ELFSymIter;
typedef std::vector<ELFSection*>::iterator ELFSectionIter; typedef std::vector<ELFSection*>::iterator ELFSectionIter;
@@ -209,7 +210,7 @@ namespace llvm {
unsigned getGlobalELFBinding(const GlobalValue *GV); unsigned getGlobalELFBinding(const GlobalValue *GV);
unsigned getGlobalELFType(const GlobalValue *GV); unsigned getGlobalELFType(const GlobalValue *GV);
unsigned getGlobalELFVisibility(const GlobalValue *GV); unsigned getGlobalELFVisibility(const GlobalValue *GV);
unsigned getElfSectionFlags(unsigned Flags); unsigned getElfSectionFlags(SectionKind Kind);
// setGlobalSymLookup - Set global value 'GV' with 'Index' in the lookup map // setGlobalSymLookup - Set global value 'GV' with 'Index' in the lookup map
void setGlobalSymLookup(const GlobalValue *GV, unsigned Index) { void setGlobalSymLookup(const GlobalValue *GV, unsigned Index) {

3
lib/Target/ARM/ARMTargetAsmInfo.cpp
View File

@@ -59,8 +59,7 @@ ARMELFTargetAsmInfo::ARMELFTargetAsmInfo(const ARMBaseTargetMachine &TM):
ARMTargetAsmInfo<ELFTargetAsmInfo>(TM) { ARMTargetAsmInfo<ELFTargetAsmInfo>(TM) {
Subtarget = &TM.getSubtarget<ARMSubtarget>(); Subtarget = &TM.getSubtarget<ARMSubtarget>();
BSSSection_ = getUnnamedSection("\t.bss", BSSSection_ = getUnnamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
NeedsSet = false; NeedsSet = false;
HasLEB128 = true; HasLEB128 = true;

3
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
View File

@@ -1130,9 +1130,10 @@ void ARMAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
const Section *TheSection = TAI->SectionForGlobal(GVar); const Section *TheSection = TAI->SectionForGlobal(GVar);
SwitchToSection(TheSection); SwitchToSection(TheSection);
// FIXME: get this stuff from section kind flags.
if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal() && if (C->isNullValue() && !GVar->hasSection() && !GVar->isThreadLocal() &&
// Don't put things that should go in the cstring section into "comm". // Don't put things that should go in the cstring section into "comm".
!TheSection->hasFlag(SectionFlags::Strings)) { !TheSection->getKind().isMergeableCString()) {
if (GVar->hasExternalLinkage()) { if (GVar->hasExternalLinkage()) {
if (const char *Directive = TAI->getZeroFillDirective()) { if (const char *Directive = TAI->getZeroFillDirective()) {
O << "\t.globl\t" << name << "\n"; O << "\t.globl\t" << name << "\n";

3
lib/Target/CellSPU/SPUTargetAsmInfo.cpp
View File

@@ -35,8 +35,7 @@ SPULinuxTargetAsmInfo::SPULinuxTargetAsmInfo(const SPUTargetMachine &TM) :
// BSS section needs to be emitted as ".section" // BSS section needs to be emitted as ".section"
BSSSection = "\t.section\t.bss"; BSSSection = "\t.section\t.bss";
BSSSection_ = getUnnamedSection("\t.section\t.bss", BSSSection_ = getUnnamedSection("\t.section\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
SupportsDebugInformation = true; SupportsDebugInformation = true;
NeedsSet = true; NeedsSet = true;

19
lib/Target/DarwinTargetAsmInfo.cpp
View File

@@ -29,28 +29,29 @@ DarwinTargetAsmInfo::DarwinTargetAsmInfo(const TargetMachine &TM)
: TargetAsmInfo(TM) { : TargetAsmInfo(TM) {
CStringSection_ = getUnnamedSection("\t.cstring", CStringSection_ = getUnnamedSection("\t.cstring",
SectionFlags::Mergeable |SectionFlags::Strings); SectionKind::MergeableCString);
FourByteConstantSection = getUnnamedSection("\t.literal4\n", FourByteConstantSection = getUnnamedSection("\t.literal4\n",
SectionFlags::Mergeable); SectionKind::MergeableConst4);
EightByteConstantSection = getUnnamedSection("\t.literal8\n", EightByteConstantSection = getUnnamedSection("\t.literal8\n",
SectionFlags::Mergeable); SectionKind::MergeableConst8);
// Note: 16-byte constant section is subtarget specific and should be provided // Note: 16-byte constant section is subtarget specific and should be provided
// there, if needed. // there, if needed.
SixteenByteConstantSection = 0; SixteenByteConstantSection = 0;
ReadOnlySection = getUnnamedSection("\t.const", SectionFlags::None); ReadOnlySection = getUnnamedSection("\t.const", SectionKind::ReadOnly);
TextCoalSection = TextCoalSection =
getNamedSection("\t__TEXT,__textcoal_nt,coalesced,pure_instructions", getNamedSection("\t__TEXT,__textcoal_nt,coalesced,pure_instructions",
SectionFlags::Code); SectionKind::Text);
ConstTextCoalSection = getNamedSection("\t__TEXT,__const_coal,coalesced", ConstTextCoalSection = getNamedSection("\t__TEXT,__const_coal,coalesced",
SectionFlags::None); SectionKind::Text);
ConstDataCoalSection = getNamedSection("\t__DATA,__const_coal,coalesced", ConstDataCoalSection = getNamedSection("\t__DATA,__const_coal,coalesced",
SectionFlags::None); SectionKind::Text);
ConstDataSection = getUnnamedSection("\t.const_data", SectionFlags::None); ConstDataSection = getUnnamedSection("\t.const_data",
SectionKind::ReadOnlyWithRel);
DataCoalSection = getNamedSection("\t__DATA,__datacoal_nt,coalesced", DataCoalSection = getNamedSection("\t__DATA,__datacoal_nt,coalesced",
SectionFlags::Writable); SectionKind::DataRel);
// Common settings for all Darwin targets. // Common settings for all Darwin targets.

86
lib/Target/ELFTargetAsmInfo.cpp
View File

@@ -27,28 +27,24 @@ using namespace llvm;
ELFTargetAsmInfo::ELFTargetAsmInfo(const TargetMachine &TM) ELFTargetAsmInfo::ELFTargetAsmInfo(const TargetMachine &TM)
: TargetAsmInfo(TM) { : TargetAsmInfo(TM) {
BSSSection_ = getUnnamedSection("\t.bss", ReadOnlySection = getNamedSection("\t.rodata", SectionKind::ReadOnly);
SectionFlags::Writable | SectionFlags::BSS); TLSDataSection = getNamedSection("\t.tdata", SectionKind::ThreadData);
ReadOnlySection = getNamedSection("\t.rodata", SectionFlags::None); TLSBSSSection = getNamedSection("\t.tbss", SectionKind::ThreadBSS);
TLSDataSection = getNamedSection("\t.tdata",
SectionFlags::Writable | SectionFlags::TLS);
TLSBSSSection = getNamedSection("\t.tbss",
SectionFlags::Writable | SectionFlags::TLS | SectionFlags::BSS);
DataRelSection = getNamedSection("\t.data.rel", SectionFlags::Writable); DataRelSection = getNamedSection("\t.data.rel", SectionKind::DataRel);
DataRelLocalSection = getNamedSection("\t.data.rel.local", DataRelLocalSection = getNamedSection("\t.data.rel.local",
SectionFlags::Writable); SectionKind::DataRelLocal);
DataRelROSection = getNamedSection("\t.data.rel.ro", DataRelROSection = getNamedSection("\t.data.rel.ro",
SectionFlags::Writable); SectionKind::ReadOnlyWithRel);
DataRelROLocalSection = getNamedSection("\t.data.rel.ro.local", DataRelROLocalSection = getNamedSection("\t.data.rel.ro.local",
SectionFlags::Writable); SectionKind::ReadOnlyWithRelLocal);
MergeableConst4Section = getNamedSection(".rodata.cst4", MergeableConst4Section = getNamedSection(".rodata.cst4",
SectionFlags::setEntitySize(SectionFlags::Mergeable, 4)); SectionKind::MergeableConst4);
MergeableConst8Section = getNamedSection(".rodata.cst8", MergeableConst8Section = getNamedSection(".rodata.cst8",
SectionFlags::setEntitySize(SectionFlags::Mergeable, 8)); SectionKind::MergeableConst8);
MergeableConst16Section = getNamedSection(".rodata.cst16", MergeableConst16Section = getNamedSection(".rodata.cst16",
SectionFlags::setEntitySize(SectionFlags::Mergeable, 16)); SectionKind::MergeableConst16);
} }
@@ -98,28 +94,30 @@ ELFTargetAsmInfo::getSectionForMergeableConstant(SectionKind Kind) const {
/// getFlagsForNamedSection - If this target wants to be able to infer /// getFlagsForNamedSection - If this target wants to be able to infer
/// section flags based on the name of the section specified for a global /// section flags based on the name of the section specified for a global
/// variable, it can implement this. /// variable, it can implement this.
unsigned ELFTargetAsmInfo::getFlagsForNamedSection(const char *Name) const { SectionKind::Kind ELFTargetAsmInfo::getKindForNamedSection(const char *Name,
unsigned Flags = 0; SectionKind::Kind K) const {
if (Name[0] != '.') return 0; if (Name[0] != '.') return K;
// Some lame default implementation based on some magic section names. // Some lame default implementation based on some magic section names.
if (strncmp(Name, ".gnu.linkonce.b.", 16) == 0 || if (strncmp(Name, ".gnu.linkonce.b.", 16) == 0 ||
strncmp(Name, ".llvm.linkonce.b.", 17) == 0 || strncmp(Name, ".llvm.linkonce.b.", 17) == 0 ||
strncmp(Name, ".gnu.linkonce.sb.", 17) == 0 || strncmp(Name, ".gnu.linkonce.sb.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.sb.", 18) == 0) strncmp(Name, ".llvm.linkonce.sb.", 18) == 0)
Flags |= SectionFlags::BSS; return SectionKind::BSS;
else if (strcmp(Name, ".tdata") == 0 ||
if (strcmp(Name, ".tdata") == 0 ||
strncmp(Name, ".tdata.", 7) == 0 || strncmp(Name, ".tdata.", 7) == 0 ||
strncmp(Name, ".gnu.linkonce.td.", 17) == 0 || strncmp(Name, ".gnu.linkonce.td.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.td.", 18) == 0) strncmp(Name, ".llvm.linkonce.td.", 18) == 0)
Flags |= SectionFlags::TLS; return SectionKind::ThreadData;
else if (strcmp(Name, ".tbss") == 0 ||
if (strcmp(Name, ".tbss") == 0 ||
strncmp(Name, ".tbss.", 6) == 0 || strncmp(Name, ".tbss.", 6) == 0 ||
strncmp(Name, ".gnu.linkonce.tb.", 17) == 0 || strncmp(Name, ".gnu.linkonce.tb.", 17) == 0 ||
strncmp(Name, ".llvm.linkonce.tb.", 18) == 0) strncmp(Name, ".llvm.linkonce.tb.", 18) == 0)
Flags |= SectionFlags::BSS | SectionFlags::TLS; return SectionKind::ThreadBSS;
return Flags; return K;
} }
const char * const char *
@@ -152,37 +150,36 @@ ELFTargetAsmInfo::MergeableStringSection(const GlobalVariable *GV) const {
if (Size <= 16) { if (Size <= 16) {
assert(getCStringSection() && "Should have string section prefix"); assert(getCStringSection() && "Should have string section prefix");
// We also need alignment here // We also need alignment here.
// FIXME: this is getting the alignment of the character, not the alignment
// of the string!!
unsigned Align = TD->getPrefTypeAlignment(Ty); unsigned Align = TD->getPrefTypeAlignment(Ty);
if (Align < Size) if (Align < Size)
Align = Size; Align = Size;
std::string Name = getCStringSection() + utostr(Size) + '.' + utostr(Align); std::string Name = getCStringSection() + utostr(Size) + '.' + utostr(Align);
unsigned Flags = SectionFlags::setEntitySize(SectionFlags::Mergeable | return getNamedSection(Name.c_str(), SectionKind::MergeableCString);
SectionFlags::Strings,
Size);
return getNamedSection(Name.c_str(), Flags);
} }
return getReadOnlySection(); return getReadOnlySection();
} }
void ELFTargetAsmInfo::getSectionFlags(unsigned Flags, void ELFTargetAsmInfo::getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const { SmallVectorImpl<char> &Str) const {
Str.push_back(','); Str.push_back(',');
Str.push_back('"'); Str.push_back('"');
if (!(Flags & SectionFlags::Debug)) if (!Kind.isMetadata())
Str.push_back('a'); Str.push_back('a');
if (Flags & SectionFlags::Code) if (Kind.isText())
Str.push_back('x'); Str.push_back('x');
if (Flags & SectionFlags::Writable) if (Kind.isWriteable())
Str.push_back('w'); Str.push_back('w');
if (Flags & SectionFlags::Mergeable) if (Kind.isMergeableConst() || Kind.isMergeableCString())
Str.push_back('M'); Str.push_back('M');
if (Flags & SectionFlags::Strings) if (Kind.isMergeableCString())
Str.push_back('S'); Str.push_back('S');
if (Flags & SectionFlags::TLS) if (Kind.isThreadLocal())
Str.push_back('T'); Str.push_back('T');
Str.push_back('"'); Str.push_back('"');
@@ -195,16 +192,27 @@ void ELFTargetAsmInfo::getSectionFlags(unsigned Flags,
Str.push_back('@'); Str.push_back('@');
const char *KindStr; const char *KindStr;
if (Flags & SectionFlags::BSS) if (Kind.isBSS())
KindStr = "nobits"; KindStr = "nobits";
else else
KindStr = "progbits"; KindStr = "progbits";
Str.append(KindStr, KindStr+strlen(KindStr)); Str.append(KindStr, KindStr+strlen(KindStr));
if (unsigned entitySize = SectionFlags::getEntitySize(Flags)) { if (Kind.isMergeableCString()) {
// TODO: Eventually handle multiple byte character strings. For now, all
// mergable C strings are single byte.
Str.push_back(','); Str.push_back(',');
std::string Size = utostr(entitySize); Str.push_back('1');
Str.append(Size.begin(), Size.end()); } else if (Kind.isMergeableConst4()) {
Str.push_back(',');
Str.push_back('4');
} else if (Kind.isMergeableConst8()) {
Str.push_back(',');
Str.push_back('8');
} else if (Kind.isMergeableConst16()) {
Str.push_back(',');
Str.push_back('1');
Str.push_back('6');
} }
} }

3
lib/Target/MSP430/MSP430TargetAsmInfo.cpp
View File

@@ -18,6 +18,5 @@ MSP430TargetAsmInfo::MSP430TargetAsmInfo(const TargetMachine &TM)
: ELFTargetAsmInfo(TM) { : ELFTargetAsmInfo(TM) {
AlignmentIsInBytes = false; AlignmentIsInBytes = false;
BSSSection_ = getUnnamedSection("\t.bss", BSSSection_ = getUnnamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
} }

3
lib/Target/Mips/MipsTargetAsmInfo.cpp
View File

@@ -30,8 +30,7 @@ MipsTargetAsmInfo::MipsTargetAsmInfo(const MipsTargetMachine &TM)
BSSSection = "\t.section\t.bss"; BSSSection = "\t.section\t.bss";
CStringSection = ".rodata.str"; CStringSection = ".rodata.str";
BSSSection_ = getUnnamedSection("\t.bss", BSSSection_ = getUnnamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
if (!TM.getSubtarget<MipsSubtarget>().hasABICall()) if (!TM.getSubtarget<MipsSubtarget>().hasABICall())
JumpTableDirective = "\t.word\t"; JumpTableDirective = "\t.word\t";

8
lib/Target/PIC16/PIC16AsmPrinter.cpp
View File

@@ -61,8 +61,8 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Now emit the instructions of function in its code section. // Now emit the instructions of function in its code section.
const char *codeSection = PAN::getCodeSectionName(CurrentFnName).c_str(); const char *codeSection = PAN::getCodeSectionName(CurrentFnName).c_str();
const Section *fCodeSection = TAI->getNamedSection(codeSection, const Section *fCodeSection =
SectionFlags::Code); TAI->getNamedSection(codeSection, SectionKind::Text);
// Start the Code Section. // Start the Code Section.
O << "\n"; O << "\n";
SwitchToSection(fCodeSection); SwitchToSection(fCodeSection);
@@ -291,8 +291,8 @@ void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
O << "\n"; O << "\n";
const char *SectionName = PAN::getFrameSectionName(CurrentFnName).c_str(); const char *SectionName = PAN::getFrameSectionName(CurrentFnName).c_str();
const Section *fPDataSection = TAI->getNamedSection(SectionName, const Section *fPDataSection =
SectionFlags::Writable); TAI->getNamedSection(SectionName, SectionKind::DataRel);
SwitchToSection(fPDataSection); SwitchToSection(fPDataSection);
// Emit function frame label // Emit function frame label

38
lib/Target/PIC16/PIC16TargetAsmInfo.cpp
View File

@@ -37,18 +37,21 @@ PIC16TargetAsmInfo(const PIC16TargetMachine &TM)
ZeroDirective = NULL; ZeroDirective = NULL;
AsciiDirective = " dt "; AsciiDirective = " dt ";
AscizDirective = NULL; AscizDirective = NULL;
BSSSection_ = getNamedSection("udata.# UDATA", BSSSection_ = getNamedSection("udata.# UDATA", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS); ReadOnlySection = getNamedSection("romdata.# ROMDATA", SectionKind::ReadOnly);
ReadOnlySection = getNamedSection("romdata.# ROMDATA", SectionFlags::None); DataSection = getNamedSection("idata.# IDATA", SectionKind::DataRel);
DataSection = getNamedSection("idata.# IDATA", SectionFlags::Writable);
SwitchToSectionDirective = ""; SwitchToSectionDirective = "";
// Need because otherwise a .text symbol is emitted by DwarfWriter // Need because otherwise a .text symbol is emitted by DwarfWriter
// in BeginModule, and gpasm cribbs for that .text symbol. // in BeginModule, and gpasm cribbs for that .text symbol.
TextSection = getUnnamedSection("", SectionFlags::Code); TextSection = getUnnamedSection("", SectionKind::Text);
PIC16Section *ROSection = new PIC16Section(getReadOnlySection()); PIC16Section *ROSection = new PIC16Section(getReadOnlySection());
ROSections.push_back(ROSection); ROSections.push_back(ROSection);
ExternalVarDecls = new PIC16Section(getNamedSection("ExternalVarDecls"));
ExternalVarDefs = new PIC16Section(getNamedSection("ExternalVarDefs")); // FIXME: I don't know what the classification of these sections really is.
ExternalVarDecls = new PIC16Section(getNamedSection("ExternalVarDecls",
SectionKind::Metadata));
ExternalVarDefs = new PIC16Section(getNamedSection("ExternalVarDefs",
SectionKind::Metadata));
// Set it to false because we weed to generate c file name and not bc file // Set it to false because we weed to generate c file name and not bc file
// name. // name.
HasSingleParameterDotFile = false; HasSingleParameterDotFile = false;
@@ -95,7 +98,9 @@ PIC16TargetAsmInfo::getBSSSectionForGlobal(const GlobalVariable *GV) const {
// No BSS section spacious enough was found. Crate a new one. // No BSS section spacious enough was found. Crate a new one.
if (!FoundBSS) { if (!FoundBSS) {
std::string name = PAN::getUdataSectionName(BSSSections.size()); std::string name = PAN::getUdataSectionName(BSSSections.size());
const Section *NewSection = getNamedSection(name.c_str()); const Section *NewSection = getNamedSection(name.c_str(),
// FIXME.
SectionKind::Metadata);
FoundBSS = new PIC16Section(NewSection); FoundBSS = new PIC16Section(NewSection);
@@ -135,7 +140,9 @@ PIC16TargetAsmInfo::getIDATASectionForGlobal(const GlobalVariable *GV) const {
// No IDATA section spacious enough was found. Crate a new one. // No IDATA section spacious enough was found. Crate a new one.
if (!FoundIDATA) { if (!FoundIDATA) {
std::string name = PAN::getIdataSectionName(IDATASections.size()); std::string name = PAN::getIdataSectionName(IDATASections.size());
const Section *NewSection = getNamedSection(name.c_str()); const Section *NewSection = getNamedSection(name.c_str(),
// FIXME.
SectionKind::Metadata);
FoundIDATA = new PIC16Section(NewSection); FoundIDATA = new PIC16Section(NewSection);
@@ -168,7 +175,9 @@ PIC16TargetAsmInfo::getSectionForAuto(const GlobalVariable *GV) const {
// No Auto section was found. Crate a new one. // No Auto section was found. Crate a new one.
if (!FoundAutoSec) { if (!FoundAutoSec) {
const Section *NewSection = getNamedSection(name.c_str()); const Section *NewSection = getNamedSection(name.c_str(),
// FIXME.
SectionKind::Metadata);
FoundAutoSec = new PIC16Section(NewSection); FoundAutoSec = new PIC16Section(NewSection);
@@ -316,7 +325,7 @@ PIC16TargetAsmInfo::CreateBSSSectionForGlobal(const GlobalVariable *GV,
PIC16Section *NewBSS = FoundBSS; PIC16Section *NewBSS = FoundBSS;
if (NewBSS == NULL) { if (NewBSS == NULL) {
const Section *NewSection = getNamedSection(Name.c_str()); const Section *NewSection = getNamedSection(Name.c_str(), SectionKind::BSS);
NewBSS = new PIC16Section(NewSection); NewBSS = new PIC16Section(NewSection);
BSSSections.push_back(NewBSS); BSSSections.push_back(NewBSS);
} }
@@ -367,7 +376,9 @@ PIC16TargetAsmInfo::CreateIDATASectionForGlobal(const GlobalVariable *GV,
PIC16Section *NewIDATASec = FoundIDATASec; PIC16Section *NewIDATASec = FoundIDATASec;
if (NewIDATASec == NULL) { if (NewIDATASec == NULL) {
const Section *NewSection = getNamedSection(Name.c_str()); const Section *NewSection = getNamedSection(Name.c_str(),
// FIXME:
SectionKind::Metadata);
NewIDATASec = new PIC16Section(NewSection); NewIDATASec = new PIC16Section(NewSection);
IDATASections.push_back(NewIDATASec); IDATASections.push_back(NewIDATASec);
} }
@@ -405,7 +416,8 @@ PIC16TargetAsmInfo::CreateROSectionForGlobal(const GlobalVariable *GV,
PIC16Section *NewRomSec = FoundROSec; PIC16Section *NewRomSec = FoundROSec;
if (NewRomSec == NULL) { if (NewRomSec == NULL) {
const Section *NewSection = getNamedSection(Name.c_str()); const Section *NewSection = getNamedSection(Name.c_str(),
SectionKind::ReadOnly);
NewRomSec = new PIC16Section(NewSection); NewRomSec = new PIC16Section(NewSection);
ROSections.push_back(NewRomSec); ROSections.push_back(NewRomSec);
} }

2
lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
View File

@@ -899,7 +899,7 @@ void PPCDarwinAsmPrinter::PrintGlobalVariable(const GlobalVariable *GVar) {
(GVar->hasLocalLinkage() || GVar->hasExternalLinkage() || (GVar->hasLocalLinkage() || GVar->hasExternalLinkage() ||
GVar->isWeakForLinker()) && GVar->isWeakForLinker()) &&
// Don't put things that should go in the cstring section into "comm". // Don't put things that should go in the cstring section into "comm".
!TheSection->hasFlag(SectionFlags::Strings)) { !TheSection->getKind().isMergeableCString()) {
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it. if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (GVar->hasExternalLinkage()) { if (GVar->hasExternalLinkage()) {

6
lib/Target/PowerPC/PPCTargetAsmInfo.cpp
View File

@@ -49,8 +49,7 @@ PPCDarwinTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
return DW_EH_PE_absptr; return DW_EH_PE_absptr;
} }
const char * const char *PPCDarwinTargetAsmInfo::getEHGlobalPrefix() const {
PPCDarwinTargetAsmInfo::getEHGlobalPrefix() const {
const PPCSubtarget* Subtarget = &TM.getSubtarget<PPCSubtarget>(); const PPCSubtarget* Subtarget = &TM.getSubtarget<PPCSubtarget>();
if (Subtarget->getDarwinVers() > 9) if (Subtarget->getDarwinVers() > 9)
return PrivateGlobalPrefix; return PrivateGlobalPrefix;
@@ -72,8 +71,7 @@ PPCLinuxTargetAsmInfo::PPCLinuxTargetAsmInfo(const PPCTargetMachine &TM) :
BSSSection = "\t.section\t\".sbss\",\"aw\",@nobits"; BSSSection = "\t.section\t\".sbss\",\"aw\",@nobits";
// PPC/Linux normally uses named section for BSS. // PPC/Linux normally uses named section for BSS.
BSSSection_ = getNamedSection("\t.bss", BSSSection_ = getNamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
// Debug Information // Debug Information
AbsoluteDebugSectionOffsets = true; AbsoluteDebugSectionOffsets = true;

17
lib/Target/Sparc/SparcTargetAsmInfo.cpp
View File

@@ -27,25 +27,24 @@ SparcELFTargetAsmInfo::SparcELFTargetAsmInfo(const TargetMachine &TM)
CStringSection=".rodata.str"; CStringSection=".rodata.str";
// Sparc normally uses named section for BSS. // Sparc normally uses named section for BSS.
BSSSection_ = getNamedSection("\t.bss", BSSSection_ = getNamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
} }
void SparcELFTargetAsmInfo::getSectionFlags(unsigned Flags, void SparcELFTargetAsmInfo::getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const { SmallVectorImpl<char> &Str) const {
if (Flags & SectionFlags::Mergeable) if (Kind.isMergeableConst() || Kind.isMergeableCString())
return ELFTargetAsmInfo::getSectionFlags(Flags, Str); return ELFTargetAsmInfo::getSectionFlagsAsString(Kind, Str);
// FIXME: Inefficient. // FIXME: Inefficient.
std::string Res; std::string Res;
if (!(Flags & SectionFlags::Debug)) if (!Kind.isMetadata())
Res += ",#alloc"; Res += ",#alloc";
if (Flags & SectionFlags::Code) if (Kind.isText())
Res += ",#execinstr"; Res += ",#execinstr";
if (Flags & SectionFlags::Writable) if (Kind.isWriteable())
Res += ",#write"; Res += ",#write";
if (Flags & SectionFlags::TLS) if (Kind.isThreadLocal())
Res += ",#tls"; Res += ",#tls";
Str.append(Res.begin(), Res.end()); Str.append(Res.begin(), Res.end());

2
lib/Target/Sparc/SparcTargetAsmInfo.h
View File

@@ -24,7 +24,7 @@ namespace llvm {
struct SparcELFTargetAsmInfo : public ELFTargetAsmInfo { struct SparcELFTargetAsmInfo : public ELFTargetAsmInfo {
explicit SparcELFTargetAsmInfo(const TargetMachine &TM); explicit SparcELFTargetAsmInfo(const TargetMachine &TM);
virtual void getSectionFlags(unsigned Flags, virtual void getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const; SmallVectorImpl<char> &Str) const;
}; };

3
lib/Target/SystemZ/SystemZTargetAsmInfo.cpp
View File

@@ -28,6 +28,5 @@ SystemZTargetAsmInfo::SystemZTargetAsmInfo(const SystemZTargetMachine &TM)
NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits"; NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits";
BSSSection_ = getUnnamedSection("\t.bss", BSSSection_ = getUnnamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
} }

44
lib/Target/TargetAsmInfo.cpp
View File

@@ -122,8 +122,8 @@ TargetAsmInfo::TargetAsmInfo(const TargetMachine &tm) : TM(tm) {
DwarfEHFrameSection = ".eh_frame"; DwarfEHFrameSection = ".eh_frame";
DwarfExceptionSection = ".gcc_except_table"; DwarfExceptionSection = ".gcc_except_table";
AsmTransCBE = 0; AsmTransCBE = 0;
TextSection = getUnnamedSection("\t.text", SectionFlags::Code); TextSection = getUnnamedSection("\t.text", SectionKind::Text);
DataSection = getUnnamedSection("\t.data", SectionFlags::Writable); DataSection = getUnnamedSection("\t.data", SectionKind::DataRel);
} }
TargetAsmInfo::~TargetAsmInfo() { TargetAsmInfo::~TargetAsmInfo() {
@@ -199,23 +199,6 @@ static bool isConstantString(const Constant *C) {
return false; return false;
} }
static unsigned SectionFlagsForGlobal(SectionKind Kind) {
// Decode flags from global and section kind.
unsigned Flags = SectionFlags::None;
if (Kind.isWeak())
Flags |= SectionFlags::Linkonce;
if (Kind.isBSS() || Kind.isThreadBSS())
Flags |= SectionFlags::BSS;
if (Kind.isThreadLocal())
Flags |= SectionFlags::TLS;
if (Kind.isText())
Flags |= SectionFlags::Code;
if (Kind.isWriteable())
Flags |= SectionFlags::Writable;
return Flags;
}
static SectionKind::Kind SectionKindForGlobal(const GlobalValue *GV, static SectionKind::Kind SectionKindForGlobal(const GlobalValue *GV,
const TargetMachine &TM) { const TargetMachine &TM) {
Reloc::Model ReloModel = TM.getRelocationModel(); Reloc::Model ReloModel = TM.getRelocationModel();
@@ -326,29 +309,21 @@ const Section *TargetAsmInfo::SectionForGlobal(const GlobalValue *GV) const {
if (const Section *TS = getSpecialCasedSectionGlobals(GV, Kind)) if (const Section *TS = getSpecialCasedSectionGlobals(GV, Kind))
return TS; return TS;
// Honour section already set, if any.
unsigned Flags = SectionFlagsForGlobal(Kind);
// This is an explicitly named section.
Flags |= SectionFlags::Named;
// If the target has magic semantics for certain section names, make sure to // If the target has magic semantics for certain section names, make sure to
// pick up the flags. This allows the user to write things with attribute // pick up the flags. This allows the user to write things with attribute
// section and still get the appropriate section flags printed. // section and still get the appropriate section flags printed.
Flags |= getFlagsForNamedSection(GV->getSection().c_str()); GVKind = getKindForNamedSection(GV->getSection().c_str(), GVKind);
return getNamedSection(GV->getSection().c_str(), Flags); return getNamedSection(GV->getSection().c_str(), GVKind);
} }
// If this global is linkonce/weak and the target handles this by emitting it // 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. // into a 'uniqued' section name, create and return the section now.
if (Kind.isWeak()) { if (Kind.isWeak()) {
if (const char *Prefix = getSectionPrefixForUniqueGlobal(Kind)) { if (const char *Prefix = getSectionPrefixForUniqueGlobal(Kind)) {
unsigned Flags = SectionFlagsForGlobal(Kind);
// FIXME: Use mangler interface (PR4584). // FIXME: Use mangler interface (PR4584).
std::string Name = Prefix+GV->getNameStr(); std::string Name = Prefix+GV->getNameStr();
return getNamedSection(Name.c_str(), Flags); return getNamedSection(Name.c_str(), GVKind);
} }
} }
@@ -390,12 +365,12 @@ TargetAsmInfo::getSectionForMergeableConstant(SectionKind Kind) const {
const Section *TargetAsmInfo::getNamedSection(const char *Name, const Section *TargetAsmInfo::getNamedSection(const char *Name,
unsigned Flags) const { SectionKind::Kind Kind) const {
Section &S = Sections[Name]; Section &S = Sections[Name];
// This is newly-created section, set it up properly. // This is newly-created section, set it up properly.
if (S.Name.empty()) { if (S.Name.empty()) {
S.Flags = Flags | SectionFlags::Named; S.Kind = SectionKind::get(Kind, false /*weak*/, true /*Named*/);
S.Name = Name; S.Name = Name;
} }
@@ -403,12 +378,13 @@ const Section *TargetAsmInfo::getNamedSection(const char *Name,
} }
const Section* const Section*
TargetAsmInfo::getUnnamedSection(const char *Directive, unsigned Flags) const { TargetAsmInfo::getUnnamedSection(const char *Directive,
SectionKind::Kind Kind) const {
Section& S = Sections[Directive]; Section& S = Sections[Directive];
// This is newly-created section, set it up properly. // This is newly-created section, set it up properly.
if (S.Name.empty()) { if (S.Name.empty()) {
S.Flags = Flags & ~SectionFlags::Named; S.Kind = SectionKind::get(Kind, false /*weak*/, false /*Named*/);
S.Name = Directive; S.Name = Directive;
} }

2
lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
View File

@@ -799,7 +799,7 @@ void X86ATTAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
if (C->isNullValue() && !GVar->hasSection() && if (C->isNullValue() && !GVar->hasSection() &&
// Don't put things that should go in the cstring section into "comm". // Don't put things that should go in the cstring section into "comm".
!TheSection->hasFlag(SectionFlags::Strings)) { !TheSection->getKind().isMergeableCString()) {
if (GVar->hasExternalLinkage()) { if (GVar->hasExternalLinkage()) {
if (const char *Directive = TAI->getZeroFillDirective()) { if (const char *Directive = TAI->getZeroFillDirective()) {
O << "\t.globl " << name << '\n'; O << "\t.globl " << name << '\n';

16
lib/Target/X86/X86TargetAsmInfo.cpp
View File

@@ -58,7 +58,7 @@ X86DarwinTargetAsmInfo::X86DarwinTargetAsmInfo(const X86TargetMachine &TM):
// FIXME: Why don't we always use this section? // FIXME: Why don't we always use this section?
if (is64Bit) if (is64Bit)
SixteenByteConstantSection = getUnnamedSection("\t.literal16\n", SixteenByteConstantSection = getUnnamedSection("\t.literal16\n",
SectionFlags::Mergeable); SectionKind::MergeableConst16);
LCOMMDirective = "\t.lcomm\t"; LCOMMDirective = "\t.lcomm\t";
// Leopard and above support aligned common symbols. // Leopard and above support aligned common symbols.
@@ -128,8 +128,7 @@ X86ELFTargetAsmInfo::X86ELFTargetAsmInfo(const X86TargetMachine &TM):
// Set up DWARF directives // Set up DWARF directives
HasLEB128 = true; // Target asm supports leb128 directives (little-endian) HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
BSSSection_ = getUnnamedSection("\t.bss", BSSSection_ = getUnnamedSection("\t.bss", SectionKind::BSS);
SectionFlags::Writable | SectionFlags::BSS);
// Debug Information // Debug Information
AbsoluteDebugSectionOffsets = true; AbsoluteDebugSectionOffsets = true;
@@ -278,13 +277,14 @@ getSectionPrefixForUniqueGlobal(SectionKind Kind) const {
} }
void X86COFFTargetAsmInfo::getSectionFlags(unsigned Flags,
void X86COFFTargetAsmInfo::getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const { SmallVectorImpl<char> &Str) const {
// FIXME: Inefficient. // FIXME: Inefficient.
std::string Res = ",\""; std::string Res = ",\"";
if (Flags & SectionFlags::Code) if (Kind.isText())
Res += 'x'; Res += 'x';
if (Flags & SectionFlags::Writable) if (Kind.isWriteable())
Res += 'w'; Res += 'w';
Res += "\""; Res += "\"";
@@ -314,8 +314,8 @@ X86WinTargetAsmInfo::X86WinTargetAsmInfo(const X86TargetMachine &TM):
AlignmentIsInBytes = true; AlignmentIsInBytes = true;
TextSection = getUnnamedSection("_text", SectionFlags::Code); TextSection = getUnnamedSection("_text", SectionKind::Text);
DataSection = getUnnamedSection("_data", SectionFlags::Writable); DataSection = getUnnamedSection("_data", SectionKind::DataRel);
JumpTableDataSection = NULL; JumpTableDataSection = NULL;
SwitchToSectionDirective = ""; SwitchToSectionDirective = "";

2
lib/Target/X86/X86TargetAsmInfo.h
View File

@@ -56,7 +56,7 @@ namespace llvm {
virtual const char * virtual const char *
getSectionPrefixForUniqueGlobal(SectionKind kind) const; getSectionPrefixForUniqueGlobal(SectionKind kind) const;
virtual void getSectionFlags(unsigned Flags, virtual void getSectionFlagsAsString(SectionKind Kind,
SmallVectorImpl<char> &Str) const; SmallVectorImpl<char> &Str) const;
}; };

12
lib/Target/XCore/XCoreTargetAsmInfo.cpp
View File

@@ -24,10 +24,9 @@ using namespace llvm;
XCoreTargetAsmInfo::XCoreTargetAsmInfo(const XCoreTargetMachine &TM) XCoreTargetAsmInfo::XCoreTargetAsmInfo(const XCoreTargetMachine &TM)
: ELFTargetAsmInfo(TM) { : ELFTargetAsmInfo(TM) {
SupportsDebugInformation = true; SupportsDebugInformation = true;
TextSection = getUnnamedSection("\t.text", SectionFlags::Code); TextSection = getUnnamedSection("\t.text", SectionKind::Text);
DataSection = getNamedSection("\t.dp.data", SectionFlags::Writable); DataSection = getNamedSection("\t.dp.data", SectionKind::DataRel);
BSSSection_ = getNamedSection("\t.dp.bss", SectionFlags::Writable | BSSSection_ = getNamedSection("\t.dp.bss", SectionKind::BSS);
SectionFlags::BSS);
// TLS globals are lowered in the backend to arrays indexed by the current // TLS globals are lowered in the backend to arrays indexed by the current
// thread id. After lowering they require no special handling by the linker // thread id. After lowering they require no special handling by the linker
@@ -36,9 +35,10 @@ XCoreTargetAsmInfo::XCoreTargetAsmInfo(const XCoreTargetMachine &TM)
TLSBSSSection = BSSSection_; TLSBSSSection = BSSSection_;
if (TM.getSubtargetImpl()->isXS1A()) if (TM.getSubtargetImpl()->isXS1A())
ReadOnlySection = getNamedSection("\t.dp.rodata", SectionFlags::Writable); // FIXME: Why is this writable???
ReadOnlySection = getNamedSection("\t.dp.rodata", SectionKind::DataRel);
else else
ReadOnlySection = getNamedSection("\t.cp.rodata", SectionFlags::None); ReadOnlySection = getNamedSection("\t.cp.rodata", SectionKind::ReadOnly);
Data16bitsDirective = "\t.short\t"; Data16bitsDirective = "\t.short\t";
Data32bitsDirective = "\t.long\t"; Data32bitsDirective = "\t.long\t";
Data64bitsDirective = 0; Data64bitsDirective = 0;