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//===- Symbols.cpp --------------------------------------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Symbols.h"
#include "Chunks.h"
#include "Error.h"
#include "InputFiles.h"
using namespace llvm::object;
using namespace lld;
using namespace lld::elf2;
template <class ELFT>
DefinedRegular<ELFT>::DefinedRegular(StringRef Name)
: Defined(DefinedRegularKind, Name) {}
// Returns 1, 0 or -1 if this symbol should take precedence
// over the Other, tie or lose, respectively.
int SymbolBody::compare(SymbolBody *Other) {
Kind LK = kind();
Kind RK = Other->kind();
// Normalize so that the smaller kind is on the left.
if (LK > RK)
return -Other->compare(this);
// First handle comparisons between two different kinds.
if (LK != RK) {
assert(LK == DefinedRegularKind);
assert(RK == UndefinedKind);
return 1;
}
// Now handle the case where the kinds are the same.
switch (LK) {
case DefinedRegularKind:
return 0;
case UndefinedKind:
return 1;
default:
llvm_unreachable("unknown symbol kind");
}
}
namespace lld {
namespace elf2 {
template class DefinedRegular<llvm::object::ELF32LE>;
template class DefinedRegular<llvm::object::ELF32BE>;
template class DefinedRegular<llvm::object::ELF64LE>;
template class DefinedRegular<llvm::object::ELF64BE>;
}
}
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