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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-objdump.h"
#include "llvm/Demangle/Demangle.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();
std::string SymName = (*SymNameOrErr).str();
if (Demangle)
SymName = demangle(SymName);
if (SymbolDescription)
SymName = getXCOFFSymbolDescription(createSymbolInfo(Obj, *SymI), SymName);
Result.append(SymName.begin(), SymName.end());
return Error::success();
}
std::optional<XCOFF::StorageMappingClass>
objdump::getXCOFFSymbolCsectSMC(const XCOFFObjectFile &Obj,
const SymbolRef &Sym) {
const XCOFFSymbolRef SymRef = Obj.toSymbolRef(Sym.getRawDataRefImpl());
if (!SymRef.isCsectSymbol())
return std::nullopt;
auto CsectAuxEntOrErr = SymRef.getXCOFFCsectAuxRef();
if (!CsectAuxEntOrErr)
return std::nullopt;
return CsectAuxEntOrErr.get().getStorageMappingClass();
}
std::optional<object::SymbolRef>
objdump::getXCOFFSymbolContainingSymbolRef(const XCOFFObjectFile &Obj,
const SymbolRef &Sym) {
const XCOFFSymbolRef SymRef = Obj.toSymbolRef(Sym.getRawDataRefImpl());
if (!SymRef.isCsectSymbol())
return std::nullopt;
Expected<XCOFFCsectAuxRef> CsectAuxEntOrErr = SymRef.getXCOFFCsectAuxRef();
if (!CsectAuxEntOrErr || !CsectAuxEntOrErr.get().isLabel())
return std::nullopt;
uint32_t Idx =
static_cast<uint32_t>(CsectAuxEntOrErr.get().getSectionOrLength());
DataRefImpl DRI;
DRI.p = Obj.getSymbolByIndex(Idx);
return SymbolRef(DRI, &Obj);
}
bool objdump::isLabel(const XCOFFObjectFile &Obj, const SymbolRef &Sym) {
const XCOFFSymbolRef SymRef = Obj.toSymbolRef(Sym.getRawDataRefImpl());
if (!SymRef.isCsectSymbol())
return false;
auto CsectAuxEntOrErr = SymRef.getXCOFFCsectAuxRef();
if (!CsectAuxEntOrErr)
return false;
return CsectAuxEntOrErr.get().isLabel();
}
std::string objdump::getXCOFFSymbolDescription(const SymbolInfoTy &SymbolInfo,
StringRef SymbolName) {
assert(SymbolInfo.isXCOFF() && "Must be a XCOFFSymInfo.");
std::string Result;
// Dummy symbols have no symbol index.
if (SymbolInfo.XCOFFSymInfo.Index)
Result =
("(idx: " + Twine(*SymbolInfo.XCOFFSymInfo.Index) + ") " + SymbolName)
.str();
else
Result.append(SymbolName.begin(), SymbolName.end());
if (SymbolInfo.XCOFFSymInfo.StorageMappingClass &&
!SymbolInfo.XCOFFSymInfo.IsLabel) {
const XCOFF::StorageMappingClass Smc =
*SymbolInfo.XCOFFSymInfo.StorageMappingClass;
Result.append(("[" + XCOFF::getMappingClassString(Smc) + "]").str());
}
return Result;
}
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