1 //===- ELFSectionMap.cpp --------------------------------------------------===//
2 //
3 // The MCLinker Project
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 #include <mcld/Support/MsgHandling.h>
10 #include <mcld/LD/ELFSectionMap.h>
11
12 using namespace mcld;
13
14 struct NameMap {
15 const char* from;
16 const char* to;
17 };
18
19 // Common mappings of ELF and other formants. Now only ELF specific mappings
20 // are added
21 static const NameMap map[] =
22 {
23 {".text", ".text"},
24 {".rodata", ".rodata"},
25 {".data.rel.ro.local", ".data.rel.ro.local"},
26 {".data.rel.ro", ".data.rel.ro"},
27 {".data", ".data"},
28 {".bss", ".bss"},
29 {".tdata", ".tdata"},
30 {".tbss", ".tbss"},
31 {".init_array", ".init_array"},
32 {".fini_array", ".fini_array"},
33 // TODO: Support DT_INIT_ARRAY for all constructors?
34 {".ctors", ".ctors"},
35 {".dtors", ".dtors"},
36 {".sdata", ".sdata"},
37 {".sbss", ".sbss"},
38 // FIXME: in GNU ld, if we are creating a shared object .sdata2 and .sbss2
39 // sections would be handled differently.
40 {".sdata2", ".sdata"},
41 {".sbss2", ".sbss"},
42 {".lrodata", ".lrodata"},
43 {".ldata", ".ldata"},
44 {".lbss", ".lbss"},
45 {".gcc_except_table", ".gcc_except_table"},
46 {".gnu.linkonce.d.rel.ro.local", ".data.rel.ro.local"},
47 {".gnu.linkonce.d.rel.ro", ".data.rel.ro"},
48 {".gnu.linkonce.t", ".text"},
49 {".gnu.linkonce.r", ".rodata"},
50 {".gnu.linkonce.d", ".data"},
51 {".gnu.linkonce.b", ".bss"},
52 {".gnu.linkonce.s", ".sdata"},
53 {".gnu.linkonce.sb", ".sbss"},
54 {".gnu.linkonce.s2", ".sdata"},
55 {".gnu.linkonce.sb2", ".sbss"},
56 {".gnu.linkonce.wi", ".debug_info"},
57 {".gnu.linkonce.td", ".tdata"},
58 {".gnu.linkonce.tb", ".tbss"},
59 {".gnu.linkonce.lr", ".lrodata"},
60 {".gnu.linkonce.l", ".ldata"},
61 {".gnu.linkonce.lb", ".lbss"},
62 };
63
64 static const int map_size = (sizeof(map) / sizeof(map[0]));
65
ELFSectionMap()66 ELFSectionMap::ELFSectionMap()
67 {
68 }
69
~ELFSectionMap()70 ELFSectionMap::~ELFSectionMap()
71 {
72 }
73
initStandardMaps()74 void ELFSectionMap::initStandardMaps()
75 {
76 for (unsigned int i = 0; i < map_size; ++i) {
77 bool exist = false;
78 NamePair& pair = append(map[i].from, map[i].to, exist);
79 if (exist) {
80 warning(diag::warn_duplicate_std_sectmap) << map[i].from
81 << map[i].to
82 << pair.from
83 << pair.to;
84 }
85 }
86 }
87
88