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ARM: correctly mangle dllimport symbols

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Add support for tracking DLLImport storage class information on a per symbol
basis in the ARM instruction selection.  Use that information to correctly
mangle the symbol (dllimport symbols are referenced via *__imp_<name>).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212430 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2014-07-07 05:18:30 +00:00
parent f12de41cee
commit ecacffa147
2 changed files with 40 additions and 17 deletions
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50
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -795,23 +795,41 @@ getModifierVariantKind(ARMCP::ARMCPModifier Modifier) {
MCSymbol *ARMAsmPrinter::GetARMGVSymbol(const GlobalValue *GV,
unsigned char TargetFlags) {
bool isIndirect = Subtarget->isTargetMachO() &&
(TargetFlags & ARMII::MO_NONLAZY) &&
Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel());
if (!isIndirect)
return getSymbol(GV);
if (Subtarget->isTargetMachO()) {
bool IsIndirect = (TargetFlags & ARMII::MO_NONLAZY) &&
Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel());
// FIXME: Remove this when Darwin transition to @GOT like syntax.
MCSymbol *MCSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
MachineModuleInfoMachO &MMIMachO =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
MachineModuleInfoImpl::StubValueTy &StubSym =
GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym) :
MMIMachO.getGVStubEntry(MCSym);
if (!StubSym.getPointer())
StubSym = MachineModuleInfoImpl::
StubValueTy(getSymbol(GV), !GV->hasInternalLinkage());
return MCSym;
if (!IsIndirect)
return getSymbol(GV);
// FIXME: Remove this when Darwin transition to @GOT like syntax.
MCSymbol *MCSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
MachineModuleInfoMachO &MMIMachO =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
MachineModuleInfoImpl::StubValueTy &StubSym =
GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym)
: MMIMachO.getGVStubEntry(MCSym);
if (!StubSym.getPointer())
StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(GV),
!GV->hasInternalLinkage());
return MCSym;
} else if (Subtarget->isTargetCOFF()) {
assert(Subtarget->isTargetWindows() &&
"Windows is the only supported COFF target");
bool IsIndirect = (TargetFlags & ARMII::MO_DLLIMPORT);
if (!IsIndirect)
return getSymbol(GV);
SmallString<128> Name;
Name = "__imp_";
getNameWithPrefix(Name, GV);
return OutContext.GetOrCreateSymbol(Name);
} else if (Subtarget->isTargetELF()) {
return getSymbol(GV);
}
llvm_unreachable("unexpected target");
}
void ARMAsmPrinter::

7
lib/Target/ARM/MCTargetDesc/ARMBaseInfo.h
View File

@ -295,7 +295,12 @@ namespace ARMII {
/// MO_OPTION_MASK - Most flags are mutually exclusive; this mask selects
/// just that part of the flag set.
MO_OPTION_MASK = 0x7f,
MO_OPTION_MASK = 0x3f,
/// MO_DLLIMPORT - On a symbol operand, this represents that the reference
/// to the symbol is for an import stub. This is used for DLL import
/// storage class indication on Windows.
MO_DLLIMPORT = 0x40,
/// MO_NONLAZY - This is an independent flag, on a symbol operand "FOO" it
/// represents a symbol which, if indirect, will get special Darwin mangling