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XCOFFDump.cpp
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XCOFFDump.cpp
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//===-- XCOFFDump.cpp - XCOFF-specific dumper -----------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements the XCOFF-specific dumper for llvm-objdump.
///
//===----------------------------------------------------------------------===//
#include "XCOFFDump.h"
#include "llvm/MC/MCDisassembler/MCDisassembler.h"
using namespace llvm;
using namespace llvm::object;
Error objdump::getXCOFFRelocationValueString(const XCOFFObjectFile *Obj,
const RelocationRef &Rel,
SmallVectorImpl<char> &Result) {
symbol_iterator SymI = Rel.getSymbol();
if (SymI == Obj->symbol_end())
return make_error<GenericBinaryError>(
"invalid symbol reference in relocation entry",
object_error::parse_failed);
Expected<StringRef> SymNameOrErr = SymI->getName();
if (!SymNameOrErr)
return SymNameOrErr.takeError();
StringRef SymName = *SymNameOrErr;
Result.append(SymName.begin(), SymName.end());
return Error::success();
}
Optional<XCOFF::StorageMappingClass>
objdump::getXCOFFSymbolCsectSMC(const XCOFFObjectFile *Obj,
const SymbolRef &Sym) {
XCOFFSymbolRef SymRef(Sym.getRawDataRefImpl(), Obj);
if (SymRef.hasCsectAuxEnt())
return SymRef.getXCOFFCsectAuxEnt32()->StorageMappingClass;
return None;
}
bool objdump::isLabel(const XCOFFObjectFile *Obj, const SymbolRef &Sym) {
XCOFFSymbolRef SymRef(Sym.getRawDataRefImpl(), Obj);
if (SymRef.hasCsectAuxEnt())
return SymRef.getXCOFFCsectAuxEnt32()->isLabel();
return false;
}
void objdump::printXCOFFSymbolDescription(const SymbolInfoTy &SymbolInfo,
StringRef SymbolName) {
assert(SymbolInfo.isXCOFF() && "Must be a XCOFFSymInfo.");
// Dummy symbols have no symbol index.
if (SymbolInfo.XCOFFSymInfo.Index)
outs() << "(idx: " << SymbolInfo.XCOFFSymInfo.Index.getValue() << ") ";
outs() << SymbolName;
if (SymbolInfo.XCOFFSymInfo.StorageMappingClass &&
!SymbolInfo.XCOFFSymInfo.IsLabel) {
const XCOFF::StorageMappingClass Smc =
SymbolInfo.XCOFFSymInfo.StorageMappingClass.getValue();
outs() << "[" << XCOFF::getMappingClassString(Smc) << "]";
}
}