forked from OSchip/llvm-project
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
//===- DWARF.cpp ----------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Dwarf.h"
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#include "InputFiles.h"
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#include "InputSection.h"
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#include "OutputSegment.h"
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#include <memory>
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using namespace lld;
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using namespace lld::macho;
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using namespace llvm;
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std::unique_ptr<DwarfObject> DwarfObject::create(ObjFile *obj) {
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auto dObj = std::make_unique<DwarfObject>();
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bool hasDwarfInfo = false;
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// LLD only needs to extract the source file path from the debug info, so we
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// initialize DwarfObject with just the sections necessary to get that path.
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// The debugger will locate the debug info via the object file paths that we
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// emit in our STABS symbols, so we don't need to process & emit them
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// ourselves.
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for (const InputSection *isec : obj->debugSections) {
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if (StringRef *s = StringSwitch<StringRef *>(isec->name)
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.Case("__debug_info", &dObj->infoSection.Data)
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.Case("__debug_abbrev", &dObj->abbrevSection)
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.Case("__debug_str", &dObj->strSection)
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.Default(nullptr)) {
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*s = toStringRef(isec->data);
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hasDwarfInfo = true;
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}
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}
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if (hasDwarfInfo)
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return dObj;
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return nullptr;
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}
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