forked from OSchip/llvm-project
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
//===- lib/MC/MCObjectWriter.cpp - MCObjectWriter implementation ----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCAssembler.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCObjectWriter.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
|
|
using namespace llvm;
|
|
|
|
MCObjectWriter::~MCObjectWriter() {
|
|
}
|
|
|
|
bool MCObjectWriter::IsSymbolRefDifferenceFullyResolved(
|
|
const MCAssembler &Asm, const MCSymbolRefExpr *A, const MCSymbolRefExpr *B,
|
|
bool InSet) const {
|
|
// Modified symbol references cannot be resolved.
|
|
if (A->getKind() != MCSymbolRefExpr::VK_None ||
|
|
B->getKind() != MCSymbolRefExpr::VK_None)
|
|
return false;
|
|
|
|
const MCSymbol &SA = A->getSymbol();
|
|
const MCSymbol &SB = B->getSymbol();
|
|
if (SA.isUndefined() || SB.isUndefined())
|
|
return false;
|
|
|
|
if (!SA.getFragment() || !SB.getFragment())
|
|
return false;
|
|
|
|
return IsSymbolRefDifferenceFullyResolvedImpl(Asm, SA, *SB.getFragment(),
|
|
InSet, false);
|
|
}
|
|
|
|
bool MCObjectWriter::IsSymbolRefDifferenceFullyResolvedImpl(
|
|
const MCAssembler &Asm, const MCSymbol &SymA, const MCFragment &FB,
|
|
bool InSet, bool IsPCRel) const {
|
|
const MCSection &SecA = SymA.getSection();
|
|
const MCSection &SecB = *FB.getParent();
|
|
// On ELF and COFF A - B is absolute if A and B are in the same section.
|
|
return &SecA == &SecB;
|
|
}
|
|
|
|
bool MCObjectWriter::isWeak(const MCSymbol &) const { return false; }
|