1 //===- lib/MC/MCObjectWriter.cpp - MCObjectWriter implementation ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCAssembler.h"
11 #include "llvm/MC/MCExpr.h"
12 #include "llvm/MC/MCObjectWriter.h"
13 #include "llvm/MC/MCSymbol.h"
17 MCObjectWriter::~MCObjectWriter() {
20 bool MCObjectWriter::IsSymbolRefDifferenceFullyResolved(
21 const MCAssembler &Asm, const MCSymbolRefExpr *A, const MCSymbolRefExpr *B,
23 // Modified symbol references cannot be resolved.
24 if (A->getKind() != MCSymbolRefExpr::VK_None ||
25 B->getKind() != MCSymbolRefExpr::VK_None)
28 const MCSymbol &SA = A->getSymbol();
29 const MCSymbol &SB = B->getSymbol();
30 if (SA.isUndefined() || SB.isUndefined())
33 const MCSymbolData &DataA = Asm.getSymbolData(SA);
34 const MCSymbolData &DataB = Asm.getSymbolData(SB);
35 if(!DataA.getFragment() || !DataB.getFragment())
38 return IsSymbolRefDifferenceFullyResolvedImpl(Asm, SA, *DataB.getFragment(),
42 bool MCObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
43 const MCAssembler &Asm, const MCSymbol &SymA, const MCFragment &FB,
44 bool InSet, bool IsPCRel) const {
45 const MCSection &SecA = SymA.getSection();
46 const MCSection &SecB = FB.getParent()->getSection();
47 // On ELF and COFF A - B is absolute if A and B are in the same section.
48 return &SecA == &SecB;
51 bool MCObjectWriter::isWeak(const MCSymbol &) const { return false; }