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Factor out code to add a GOT entry. 

llvm-svn: 298821
This commit is contained in:
Rui Ueyama 2017-03-26 21:00:09 +00:00
parent a1737293fc
commit 4c6dfbdc20
1 changed files with 28 additions and 22 deletions
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50
lld/ELF/Relocations.cpp
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@ -715,6 +715,32 @@ static void addPltEntry(PltSection *Plt, GotPltSection *GotPlt,
Rel->addReloc({Type, GotPlt, Sym.getGotPltOffset(), UseSymVA, &Sym, 0});
}
template <class ELFT>
static void addGotEntry(SymbolBody &Sym, bool Preemptible) {
In<ELFT>::Got->addEntry(Sym);
uint64_t Off = Sym.getGotOffset();
uint32_t DynType;
RelExpr Expr = R_ABS;
if (Sym.isTls()) {
DynType = Target->TlsGotRel;
Expr = R_TLS;
} else if (!Preemptible && Config->Pic && !isAbsolute(Sym)) {
DynType = Target->RelativeRel;
} else {
DynType = Target->GotRel;
}
bool Constant = !Preemptible && !(Config->Pic && !isAbsolute(Sym));
if (!Constant)
In<ELFT>::RelaDyn->addReloc(
{DynType, In<ELFT>::Got, Off, !Preemptible, &Sym, 0});
if (Constant || (!Config->IsRela && !Preemptible))
In<ELFT>::Got->Relocations.push_back({Expr, DynType, Off, 0, &Sym});
}
// The reason we have to do this early scan is as follows
// * To mmap the output file, we need to know the size
// * For that, we need to know how many dynamic relocs we will have.
@ -869,28 +895,8 @@ static void scanRelocs(InputSectionBase &Sec, ArrayRef<RelTy> Rels) {
continue;
}
if (Body.isInGot())
continue;
In<ELFT>::Got->addEntry(Body);
uint64_t Off = Body.getGotOffset();
uint32_t DynType;
RelExpr GotRE = R_ABS;
if (Body.isTls()) {
DynType = Target->TlsGotRel;
GotRE = R_TLS;
} else if (!Preemptible && Config->Pic && !isAbsolute(Body))
DynType = Target->RelativeRel;
else
DynType = Target->GotRel;
// FIXME: this logic is almost duplicated above.
bool Constant = !Preemptible && !(Config->Pic && !isAbsolute(Body));
if (!Constant)
In<ELFT>::RelaDyn->addReloc(
{DynType, In<ELFT>::Got, Off, !Preemptible, &Body, 0});
if (Constant || (!RelTy::IsRela && !Preemptible))
In<ELFT>::Got->Relocations.push_back({GotRE, DynType, Off, 0, &Body});
if (!Body.isInGot())
addGotEntry<ELFT>(Body, Preemptible);
continue;
}
}