//===----------------------------------------------------------------------===//
#include "MipsTargetObjectFile.h"
+#include "MipsSubtarget.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ELF.h"
using namespace llvm;
static cl::opt<unsigned>
void MipsTargetObjectFile::Initialize(MCContext &Ctx, const TargetMachine &TM){
TargetLoweringObjectFileELF::Initialize(Ctx, TM);
-
+
SmallDataSection =
- getELFSection(".sdata", MCSectionELF::SHT_PROGBITS,
- MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
- SectionKind::getDataRel());
-
+ getContext().getELFSection(".sdata", ELF::SHT_PROGBITS,
+ ELF::SHF_WRITE |ELF::SHF_ALLOC,
+ SectionKind::getDataRel());
+
SmallBSSSection =
- getELFSection(".sbss", MCSectionELF::SHT_NOBITS,
- MCSectionELF::SHF_WRITE | MCSectionELF::SHF_ALLOC,
- SectionKind::getBSS());
-
+ getContext().getELFSection(".sbss", ELF::SHT_NOBITS,
+ ELF::SHF_WRITE |ELF::SHF_ALLOC,
+ SectionKind::getBSS());
+
}
-// A address must be loaded from a small section if its size is less than the
-// small section size threshold. Data in this section must be addressed using
+// A address must be loaded from a small section if its size is less than the
+// small section size threshold. Data in this section must be addressed using
// gp_rel operator.
static bool IsInSmallSection(uint64_t Size) {
return Size > 0 && Size <= SSThreshold;
const TargetMachine &TM) const {
if (GV->isDeclaration() || GV->hasAvailableExternallyLinkage())
return false;
-
+
return IsGlobalInSmallSection(GV, TM, getKindForGlobal(GV, TM));
}
bool MipsTargetObjectFile::
IsGlobalInSmallSection(const GlobalValue *GV, const TargetMachine &TM,
SectionKind Kind) const {
+
+ // Only use small section for non linux targets.
+ const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>();
+ if (Subtarget.isLinux())
+ return false;
+
// Only global variables, not functions.
const GlobalVariable *GVA = dyn_cast<GlobalVariable>(GV);
if (!GVA)
return false;
-
+
// We can only do this for datarel or BSS objects for now.
if (!Kind.isBSS() && !Kind.isDataRel())
return false;
-
+
// If this is a internal constant string, there is a special
// section for it, but not in small data/bss.
if (Kind.isMergeable1ByteCString())
Mangler *Mang, const TargetMachine &TM) const {
// TODO: Could also support "weak" symbols as well with ".gnu.linkonce.s.*"
// sections?
-
+
// Handle Small Section classification here.
if (Kind.isBSS() && IsGlobalInSmallSection(GV, TM, Kind))
return SmallBSSSection;
if (Kind.isDataNoRel() && IsGlobalInSmallSection(GV, TM, Kind))
return SmallDataSection;
-
+
// Otherwise, we work the same as ELF.
return TargetLoweringObjectFileELF::SelectSectionForGlobal(GV, Kind, Mang,TM);
}