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comparison lld/MachO/Dwarf.cpp @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
parents
children 5f17cb93ff66
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173:0572611fdcc8 207:2e18cbf3894f
1 //===- DWARF.cpp ----------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "Dwarf.h"
10 #include "InputFiles.h"
11 #include "InputSection.h"
12 #include "OutputSegment.h"
13
14 #include <memory>
15
16 using namespace lld;
17 using namespace lld::macho;
18 using namespace llvm;
19
20 std::unique_ptr<DwarfObject> DwarfObject::create(ObjFile *obj) {
21 auto dObj = std::make_unique<DwarfObject>();
22 bool hasDwarfInfo = false;
23 // LLD only needs to extract the source file path from the debug info, so we
24 // initialize DwarfObject with just the sections necessary to get that path.
25 // The debugger will locate the debug info via the object file paths that we
26 // emit in our STABS symbols, so we don't need to process & emit them
27 // ourselves.
28 for (const InputSection *isec : obj->debugSections) {
29 if (StringRef *s =
30 StringSwitch<StringRef *>(isec->name)
31 .Case(section_names::debugInfo, &dObj->infoSection.Data)
32 .Case(section_names::debugAbbrev, &dObj->abbrevSection)
33 .Case(section_names::debugStr, &dObj->strSection)
34 .Default(nullptr)) {
35 *s = toStringRef(isec->data);
36 hasDwarfInfo = true;
37 }
38 }
39
40 if (hasDwarfInfo)
41 return dObj;
42 return nullptr;
43 }