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7e1edb90 ILT |
1 | // parameters.cc -- general parameters for a link using gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
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 | ||
7e1edb90 ILT |
23 | #include "gold.h" |
24 | ||
25 | #include "options.h" | |
96803768 | 26 | #include "target.h" |
8851ecca | 27 | #include "target-select.h" |
7e1edb90 ILT |
28 | |
29 | namespace gold | |
30 | { | |
31 | ||
8851ecca ILT |
32 | void |
33 | Parameters::set_errors(Errors* errors) | |
7e1edb90 | 34 | { |
8851ecca ILT |
35 | gold_assert(this->errors_ == NULL); |
36 | this->errors_ = errors; | |
3c2fafa5 ILT |
37 | } |
38 | ||
3c2fafa5 | 39 | void |
8851ecca | 40 | Parameters::set_options(const General_options* options) |
3c2fafa5 | 41 | { |
8851ecca ILT |
42 | gold_assert(!this->options_valid()); |
43 | this->options_ = options; | |
44 | // For speed, we make our own copy of the debug variable. | |
45 | this->debug_ = this->options().debug(); | |
7e1edb90 ILT |
46 | } |
47 | ||
b3b74ddc ILT |
48 | void |
49 | Parameters::set_doing_static_link(bool doing_static_link) | |
50 | { | |
8851ecca | 51 | gold_assert(!this->doing_static_link_valid_); |
b3b74ddc | 52 | this->doing_static_link_ = doing_static_link; |
8851ecca | 53 | this->doing_static_link_valid_ = true; |
b3b74ddc ILT |
54 | } |
55 | ||
9025d29d | 56 | void |
8851ecca | 57 | Parameters::set_target(const Target* target) |
9025d29d | 58 | { |
8851ecca ILT |
59 | if (!this->target_valid()) |
60 | this->target_ = target; | |
9025d29d | 61 | else |
96803768 | 62 | gold_assert(target == this->target_); |
9025d29d ILT |
63 | } |
64 | ||
8851ecca ILT |
65 | // The x86_64 kernel build converts a binary file to an object file |
66 | // using -r --format binary --oformat elf32-i386 foo.o. In order to | |
67 | // support that for gold we support determining the default target | |
68 | // choice from the output format. We recognize names that the GNU | |
69 | // linker uses. | |
9025d29d | 70 | |
8851ecca ILT |
71 | const Target& |
72 | Parameters::default_target() const | |
73 | { | |
74 | gold_assert(this->options_valid()); | |
7cc619c3 | 75 | if (this->options().oformat() != NULL) |
8851ecca ILT |
76 | { |
77 | const Target* target | |
7cc619c3 | 78 | = select_target_by_name(this->options().oformat()); |
8851ecca ILT |
79 | if (target != NULL) |
80 | return *target; | |
7e1edb90 | 81 | |
8851ecca | 82 | gold_error(_("unrecognized output format %s"), |
7cc619c3 | 83 | this->options().oformat()); |
8851ecca | 84 | } |
7e1edb90 | 85 | |
8851ecca ILT |
86 | // The GOLD_DEFAULT_xx macros are defined by the configure script. |
87 | const Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE, | |
88 | GOLD_DEFAULT_SIZE, | |
89 | GOLD_DEFAULT_BIG_ENDIAN, | |
90 | 0, 0); | |
91 | gold_assert(target != NULL); | |
92 | return *target; | |
93 | } | |
7e1edb90 | 94 | |
8851ecca ILT |
95 | Parameters::Target_size_endianness |
96 | Parameters::size_and_endianness() const | |
3c2fafa5 | 97 | { |
8851ecca ILT |
98 | if (this->target().get_size() == 32) |
99 | { | |
100 | if (!this->target().is_big_endian()) | |
101 | { | |
102 | #ifdef HAVE_TARGET_32_LITTLE | |
103 | return TARGET_32_LITTLE; | |
104 | #else | |
105 | gold_unreachable(); | |
106 | #endif | |
107 | } | |
108 | else | |
109 | { | |
110 | #ifdef HAVE_TARGET_32_BIG | |
111 | return TARGET_32_BIG; | |
112 | #else | |
113 | gold_unreachable(); | |
114 | #endif | |
115 | } | |
116 | } | |
117 | else if (parameters->target().get_size() == 64) | |
118 | { | |
119 | if (!parameters->target().is_big_endian()) | |
120 | { | |
121 | #ifdef HAVE_TARGET_64_LITTLE | |
122 | return TARGET_64_LITTLE; | |
123 | #else | |
124 | gold_unreachable(); | |
125 | #endif | |
126 | } | |
127 | else | |
128 | { | |
129 | #ifdef HAVE_TARGET_64_BIG | |
130 | return TARGET_64_BIG; | |
131 | #else | |
132 | gold_unreachable(); | |
133 | #endif | |
134 | } | |
135 | } | |
136 | else | |
137 | gold_unreachable(); | |
3c2fafa5 ILT |
138 | } |
139 | ||
3c2fafa5 | 140 | |
8851ecca ILT |
141 | // Our local version of the variable, which is not const. |
142 | ||
143 | static Parameters static_parameters; | |
144 | ||
145 | // The global variable. | |
9025d29d | 146 | |
8851ecca | 147 | const Parameters* parameters = &static_parameters; |
b3b74ddc ILT |
148 | |
149 | void | |
8851ecca ILT |
150 | set_parameters_errors(Errors* errors) |
151 | { static_parameters.set_errors(errors); } | |
b3b74ddc | 152 | |
8851ecca ILT |
153 | void |
154 | set_parameters_options(const General_options* options) | |
155 | { static_parameters.set_options(options); } | |
b3b74ddc | 156 | |
9025d29d | 157 | void |
8851ecca ILT |
158 | set_parameters_target(const Target* target) |
159 | { static_parameters.set_target(target); } | |
160 | ||
161 | void | |
162 | set_parameters_doing_static_link(bool doing_static_link) | |
163 | { static_parameters.set_doing_static_link(doing_static_link); } | |
7e1edb90 ILT |
164 | |
165 | } // End namespace gold. |