* readsyms.cc (Read_symbols::incompatible_warning): New function.
[platform/upstream/binutils.git] / gold / parameters.cc
1 // parameters.cc -- general parameters for a link using gold
2
3 // Copyright 2006, 2007, 2008 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
23 #include "gold.h"
24
25 #include "debug.h"
26 #include "options.h"
27 #include "target.h"
28 #include "target-select.h"
29
30 namespace gold
31 {
32
33 void
34 Parameters::set_errors(Errors* errors)
35 {
36   gold_assert(this->errors_ == NULL);
37   this->errors_ = errors;
38 }
39
40 void
41 Parameters::set_options(const General_options* options)
42 {
43   gold_assert(!this->options_valid());
44   this->options_ = options;
45   // For speed, we convert the options() debug var from a string to an
46   // enum (from debug.h).
47   this->debug_ = debug_string_to_enum(this->options().debug());
48   // If --verbose is set, it acts as "--debug=files".
49   if (options->verbose())
50     this->debug_ |= DEBUG_FILES;
51 }
52
53 void
54 Parameters::set_doing_static_link(bool doing_static_link)
55 {
56   gold_assert(!this->doing_static_link_valid_);
57   this->doing_static_link_ = doing_static_link;
58   this->doing_static_link_valid_ = true;
59 }
60
61 void
62 Parameters::set_target(const Target* target)
63 {
64   if (!this->target_valid())
65     this->target_ = target;
66   else
67     gold_assert(target == this->target_);
68 }
69
70 // The x86_64 kernel build converts a binary file to an object file
71 // using -r --format binary --oformat elf32-i386 foo.o.  In order to
72 // support that for gold we support determining the default target
73 // choice from the output format.  We recognize names that the GNU
74 // linker uses.
75
76 const Target&
77 Parameters::default_target() const
78 {
79   gold_assert(this->options_valid());
80   if (this->options().user_set_oformat())
81     {
82       const Target* target
83           = select_target_by_name(this->options().oformat());
84       if (target != NULL)
85         return *target;
86
87       gold_error(_("unrecognized output format %s"),
88                  this->options().oformat());
89     }
90
91   // The GOLD_DEFAULT_xx macros are defined by the configure script.
92   const Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
93                                        GOLD_DEFAULT_SIZE,
94                                        GOLD_DEFAULT_BIG_ENDIAN,
95                                        0, 0);
96   gold_assert(target != NULL);
97   return *target;
98 }
99
100 // Return whether TARGET is compatible with the target we are using.
101
102 bool
103 Parameters::is_compatible_target(const Target* target) const
104 {
105   if (this->target_ == NULL)
106     return true;
107   return target == this->target_;
108 }
109
110 Parameters::Target_size_endianness
111 Parameters::size_and_endianness() const
112 {
113   if (this->target().get_size() == 32)
114     {
115       if (!this->target().is_big_endian())
116         {
117 #ifdef HAVE_TARGET_32_LITTLE
118           return TARGET_32_LITTLE;
119 #else
120           gold_unreachable();
121 #endif
122         }
123       else
124         {
125 #ifdef HAVE_TARGET_32_BIG
126           return TARGET_32_BIG;
127 #else
128           gold_unreachable();
129 #endif
130         }
131     }
132   else if (parameters->target().get_size() == 64)
133     {
134       if (!parameters->target().is_big_endian())
135         {
136 #ifdef HAVE_TARGET_64_LITTLE
137           return TARGET_64_LITTLE;
138 #else
139           gold_unreachable();
140 #endif
141         }
142       else
143         {
144 #ifdef HAVE_TARGET_64_BIG
145           return TARGET_64_BIG;
146 #else
147           gold_unreachable();
148 #endif
149         }
150     }
151   else
152     gold_unreachable();
153 }
154
155
156 // Our local version of the variable, which is not const.
157
158 static Parameters static_parameters;
159
160 // The global variable.
161
162 const Parameters* parameters = &static_parameters;
163
164 void
165 set_parameters_errors(Errors* errors)
166 { static_parameters.set_errors(errors); }
167
168 void
169 set_parameters_options(const General_options* options)
170 { static_parameters.set_options(options); }
171
172 void
173 set_parameters_target(const Target* target)
174 { static_parameters.set_target(target); }
175
176 void
177 set_parameters_doing_static_link(bool doing_static_link)
178 { static_parameters.set_doing_static_link(doing_static_link); }
179
180 } // End namespace gold.