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14bfc3f5 ILT |
1 | // target-select.cc -- select a target for an object file |
2 | ||
ebdbb458 | 3 | // Copyright 2006, 2007, 2008 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@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 | ||
14bfc3f5 ILT |
23 | #include "gold.h" |
24 | ||
25 | #include "elfcpp.h" | |
26 | #include "target-select.h" | |
27 | ||
28 | namespace | |
29 | { | |
30 | ||
31 | // The start of the list of target selectors. | |
32 | ||
33 | gold::Target_selector* target_selectors; | |
34 | ||
35 | } // End anonymous namespace. | |
36 | ||
37 | namespace gold | |
38 | { | |
39 | ||
40 | // Construct a Target_selector, which means adding it to the linked | |
41 | // list. This runs at global constructor time, so we want it to be | |
42 | // fast. | |
43 | ||
6340166c ILT |
44 | Target_selector::Target_selector(int machine, int size, bool is_big_endian) |
45 | : machine_(machine), size_(size), is_big_endian_(is_big_endian) | |
14bfc3f5 ILT |
46 | { |
47 | this->next_ = target_selectors; | |
48 | target_selectors = this; | |
49 | } | |
50 | ||
51 | // Find the target for an ELF file. | |
52 | ||
0daa6f62 | 53 | Target* |
6340166c | 54 | select_target(int machine, int size, bool is_big_endian, int osabi, |
14bfc3f5 ILT |
55 | int abiversion) |
56 | { | |
ead1e424 | 57 | for (Target_selector* p = target_selectors; p != NULL; p = p->next()) |
14bfc3f5 ILT |
58 | { |
59 | int pmach = p->machine(); | |
60 | if ((pmach == machine || pmach == elfcpp::EM_NONE) | |
6340166c ILT |
61 | && p->get_size() == size |
62 | && (p->is_big_endian() ? is_big_endian : !is_big_endian)) | |
14bfc3f5 ILT |
63 | { |
64 | Target* ret = p->recognize(machine, osabi, abiversion); | |
65 | if (ret != NULL) | |
66 | return ret; | |
67 | } | |
68 | } | |
69 | return NULL; | |
70 | } | |
71 | ||
0daa6f62 ILT |
72 | // Find a target using a BFD name. This is used to support the |
73 | // --oformat option. | |
74 | ||
75 | Target* | |
76 | select_target_by_name(const char* name) | |
77 | { | |
78 | for (Target_selector* p = target_selectors; p != NULL; p = p->next()) | |
79 | { | |
80 | Target* ret = p->recognize_by_name(name); | |
81 | if (ret != NULL) | |
82 | return ret; | |
83 | } | |
84 | return NULL; | |
85 | } | |
86 | ||
14bfc3f5 | 87 | } // End namespace gold. |