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bb04269c DK |
1 | // target.cc |
2 | ||
3 | // Copyright 2009 Free Software Foundation, Inc. | |
4 | // Written by Doug Kwan <dougkwan@google.com>. | |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | #include "gold.h" | |
24 | #include "target.h" | |
25 | ||
26 | namespace gold | |
27 | { | |
28 | ||
29 | // Return whether NAME is a local label name. This is used to implement the | |
30 | // --discard-locals options and can be overriden by children classes to | |
31 | // implement system-specific behaviour. The logic here is the same as that | |
32 | // in _bfd_elf_is_local_label_name(). | |
33 | ||
34 | bool | |
35 | Target::do_is_local_label_name (const char* name) const | |
36 | { | |
37 | // Normal local symbols start with ``.L''. | |
38 | if (name[0] == '.' && name[1] == 'L') | |
39 | return true; | |
40 | ||
41 | // At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate | |
42 | // DWARF debugging symbols starting with ``..''. | |
43 | if (name[0] == '.' && name[1] == '.') | |
44 | return true; | |
45 | ||
46 | // gcc will sometimes generate symbols beginning with ``_.L_'' when | |
47 | // emitting DWARF debugging output. I suspect this is actually a | |
48 | // small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call | |
49 | // ASM_GENERATE_INTERNAL_LABEL, and this causes the leading | |
50 | // underscore to be emitted on some ELF targets). For ease of use, | |
51 | // we treat such symbols as local. | |
52 | if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_') | |
53 | return true; | |
54 | ||
55 | return false; | |
56 | } | |
57 | ||
58 | } // End namespace gold. |