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comparison lld/MachO/UnwindInfoSection.h @ 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
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children 5f17cb93ff66
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173:0572611fdcc8 207:2e18cbf3894f
1 //===- UnwindInfoSection.h ------------------------------------------------===//
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 #ifndef LLD_MACHO_UNWIND_INFO_H
10 #define LLD_MACHO_UNWIND_INFO_H
11
12 #include "ConcatOutputSection.h"
13 #include "SyntheticSections.h"
14
15 #include "mach-o/compact_unwind_encoding.h"
16 #include "llvm/ADT/DenseMap.h"
17
18 #include <vector>
19
20 namespace lld {
21 namespace macho {
22
23 template <class Ptr> struct CompactUnwindEntry {
24 Ptr functionAddress;
25 uint32_t functionLength;
26 compact_unwind_encoding_t encoding;
27 Ptr personality;
28 Ptr lsda;
29 };
30
31 class UnwindInfoSection : public SyntheticSection {
32 public:
33 bool isNeeded() const override { return compactUnwindSection != nullptr; }
34 uint64_t getSize() const override { return unwindInfoSize; }
35 virtual void prepareRelocations(InputSection *) = 0;
36
37 void setCompactUnwindSection(ConcatOutputSection *cuSection) {
38 compactUnwindSection = cuSection;
39 }
40
41 protected:
42 UnwindInfoSection()
43 : SyntheticSection(segment_names::text, section_names::unwindInfo) {
44 align = 4;
45 }
46
47 ConcatOutputSection *compactUnwindSection = nullptr;
48 uint64_t unwindInfoSize = 0;
49 };
50
51 UnwindInfoSection *makeUnwindInfoSection();
52
53 } // namespace macho
54 } // namespace lld
55
56 #endif