//
//===----------------------------------------------------------------------===//
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Function.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/Mangler.h"
#include "llvm/Target/DarwinTargetAsmInfo.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetData.h"
-
using namespace llvm;
-DarwinTargetAsmInfo::DarwinTargetAsmInfo(const TargetMachine &TM)
- : TargetAsmInfo(TM) {
-
- CStringSection_ = getUnnamedSection("\t.cstring",
- SectionFlags::Mergeable | SectionFlags::Strings);
- FourByteConstantSection = getUnnamedSection("\t.literal4\n",
- SectionFlags::Mergeable);
- EightByteConstantSection = getUnnamedSection("\t.literal8\n",
- SectionFlags::Mergeable);
-
- // Note: 16-byte constant section is subtarget specific and should be provided
- // there, if needed.
- SixteenByteConstantSection = 0;
-
- ReadOnlySection = getUnnamedSection("\t.const\n", SectionFlags::None);
-
- TextCoalSection =
- getNamedSection("\t__TEXT,__textcoal_nt,coalesced,pure_instructions",
- SectionFlags::Code);
- ConstTextCoalSection = getNamedSection("\t__TEXT,__const_coal,coalesced",
- SectionFlags::None);
- ConstDataCoalSection = getNamedSection("\t__DATA,__const_coal,coalesced",
- SectionFlags::None);
- ConstDataSection = getUnnamedSection(".const_data", SectionFlags::None);
- DataCoalSection = getNamedSection("\t__DATA,__datacoal_nt,coalesced",
- SectionFlags::Writeable);
-
-
+DarwinTargetAsmInfo::DarwinTargetAsmInfo() {
// Common settings for all Darwin targets.
// Syntax:
GlobalPrefix = "_";
PrivateGlobalPrefix = "L";
- LessPrivateGlobalPrefix = "l"; // Marker for some ObjC metadata
- StringConstantPrefix = "\1LC";
+ LinkerPrivateGlobalPrefix = "l"; // Marker for some ObjC metadata
NeedsSet = true;
NeedsIndirectEncoding = true;
AllowQuotesInName = true;
WeakRefDirective = "\t.weak_reference ";
HiddenDirective = "\t.private_extern ";
- // Sections:
- CStringSection = "\t.cstring";
- JumpTableDataSection = "\t.const\n";
- BSSSection = 0;
-
- if (TM.getRelocationModel() == Reloc::Static) {
- StaticCtorsSection = ".constructor";
- StaticDtorsSection = ".destructor";
- } else {
- StaticCtorsSection = ".mod_init_func";
- StaticDtorsSection = ".mod_term_func";
- }
-
- DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
- DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
- DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
- DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
- DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
- DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
- DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
- DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
- DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
- DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
- DwarfMacroInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
+ // _foo.eh symbols are currently always exported so that the linker knows
+ // about them. This is not necessary on 10.6 and later, but it
+ // doesn't hurt anything.
+ // FIXME: I need to get this from Triple.
+ Is_EHSymbolPrivate = false;
}
-/// emitUsedDirectiveFor - On Darwin, internally linked data beginning with
-/// the PrivateGlobalPrefix or the LessPrivateGlobalPrefix does not have the
-/// directive emitted (this occurs in ObjC metadata).
-
-bool
-DarwinTargetAsmInfo::emitUsedDirectiveFor(const GlobalValue* GV,
- Mangler *Mang) const {
- if (GV==0)
- return false;
- if (GV->hasLocalLinkage() && !isa<Function>(GV) &&
- ((strlen(getPrivateGlobalPrefix()) != 0 &&
- Mang->getValueName(GV).substr(0,strlen(getPrivateGlobalPrefix())) ==
- getPrivateGlobalPrefix()) ||
- (strlen(getLessPrivateGlobalPrefix()) != 0 &&
- Mang->getValueName(GV).substr(0,strlen(getLessPrivateGlobalPrefix())) ==
- getLessPrivateGlobalPrefix())))
- return false;
- return true;
-}
-
-const Section*
-DarwinTargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
- SectionKind::Kind Kind = SectionKindForGlobal(GV);
- bool isWeak = GV->isWeakForLinker();
- bool isNonStatic = TM.getRelocationModel() != Reloc::Static;
-
- switch (Kind) {
- case SectionKind::Text:
- if (isWeak)
- return TextCoalSection;
- else
- return TextSection;
- case SectionKind::Data:
- case SectionKind::ThreadData:
- case SectionKind::BSS:
- case SectionKind::ThreadBSS:
- if (cast<GlobalVariable>(GV)->isConstant())
- return (isWeak ? ConstDataCoalSection : ConstDataSection);
- else
- return (isWeak ? DataCoalSection : DataSection);
- case SectionKind::ROData:
- return (isWeak ? ConstDataCoalSection :
- (isNonStatic ? ConstDataSection : getReadOnlySection()));
- case SectionKind::RODataMergeStr:
- return (isWeak ?
- ConstTextCoalSection :
- MergeableStringSection(cast<GlobalVariable>(GV)));
- case SectionKind::RODataMergeConst:
- return (isWeak ?
- ConstDataCoalSection:
- MergeableConstSection(cast<GlobalVariable>(GV)));
- default:
- assert(0 && "Unsuported section kind for global");
- }
-
- // FIXME: Do we have any extra special weird cases?
- return NULL;
-}
-
-const Section*
-DarwinTargetAsmInfo::MergeableStringSection(const GlobalVariable *GV) const {
- const TargetData *TD = TM.getTargetData();
- Constant *C = cast<GlobalVariable>(GV)->getInitializer();
- const Type *Ty = cast<ArrayType>(C->getType())->getElementType();
-
- unsigned Size = TD->getTypeAllocSize(Ty);
- if (Size) {
- unsigned Align = TD->getPreferredAlignment(GV);
- if (Align <= 32)
- return getCStringSection_();
- }
-
- return getReadOnlySection();
-}
-
-const Section*
-DarwinTargetAsmInfo::MergeableConstSection(const GlobalVariable *GV) const {
- Constant *C = GV->getInitializer();
-
- return MergeableConstSection(C->getType());
-}
-
-inline const Section*
-DarwinTargetAsmInfo::MergeableConstSection(const Type *Ty) const {
- const TargetData *TD = TM.getTargetData();
-
- unsigned Size = TD->getTypeAllocSize(Ty);
- if (Size == 4)
- return FourByteConstantSection;
- else if (Size == 8)
- return EightByteConstantSection;
- else if (Size == 16 && SixteenByteConstantSection)
- return SixteenByteConstantSection;
-
- return getReadOnlySection();
-}
-
-const Section*
-DarwinTargetAsmInfo::SelectSectionForMachineConst(const Type *Ty) const {
- const Section* S = MergeableConstSection(Ty);
-
- // Handle weird special case, when compiling PIC stuff.
- if (S == getReadOnlySection() &&
- TM.getRelocationModel() != Reloc::Static)
- return ConstDataSection;
-
- return S;
-}
-
-std::string
-DarwinTargetAsmInfo::UniqueSectionForGlobal(const GlobalValue* GV,
- SectionKind::Kind kind) const {
- assert(0 && "Darwin does not use unique sections");
- return "";
-}
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