53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
|
//===- lib/MC/MCObjectWriter.cpp - MCObjectWriter implementation ----------===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "llvm/MC/MCObjectWriter.h"
|
||
|
|
#include "llvm/MC/MCAssembler.h"
|
||
|
|
#include "llvm/MC/MCExpr.h"
|
||
|
|
#include "llvm/MC/MCFragment.h"
|
||
|
|
#include "llvm/MC/MCSymbol.h"
|
||
|
|
|
||
|
|
using namespace llvm;
|
||
|
|
|
||
|
|
MCObjectWriter::~MCObjectWriter() = default;
|
||
|
|
|
||
|
|
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, InSet);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool MCObjectWriter::isSymbolRefDifferenceFullyResolvedImpl(
|
||
|
|
const MCAssembler &Asm, const MCSymbol &A, const MCSymbol &B,
|
||
|
|
bool InSet) const {
|
||
|
|
return isSymbolRefDifferenceFullyResolvedImpl(Asm, A, *B.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;
|
||
|
|
}
|