Commit | Line | Data |
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252b5132 | 1 | /* ld.h -- general linker header file |
2d643429 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2004 |
252b5132 RH |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GLD, the Gnu Linker. | |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #ifndef LD_H | |
23 | #define LD_H | |
24 | ||
25 | #ifdef HAVE_LOCALE_H | |
26 | # include <locale.h> | |
27 | #endif | |
28 | ||
29 | #ifdef ENABLE_NLS | |
30 | # include <libintl.h> | |
31 | # define _(String) gettext (String) | |
32 | # ifdef gettext_noop | |
33 | # define N_(String) gettext_noop (String) | |
34 | # else | |
35 | # define N_(String) (String) | |
36 | # endif | |
37 | #else | |
897083bd AM |
38 | # define gettext(Msgid) (Msgid) |
39 | # define dgettext(Domainname, Msgid) (Msgid) | |
40 | # define dcgettext(Domainname, Msgid, Category) (Msgid) | |
41 | # define textdomain(Domainname) while (0) /* nothing */ | |
42 | # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */ | |
252b5132 RH |
43 | # define _(String) (String) |
44 | # define N_(String) (String) | |
45 | #endif | |
46 | ||
c20f4f8c AM |
47 | #include "bin-bugs.h" |
48 | ||
252b5132 RH |
49 | /* Look in this environment name for the linker to pretend to be */ |
50 | #define EMULATION_ENVIRON "LDEMULATION" | |
51 | /* If in there look for the strings: */ | |
52 | ||
53 | /* Look in this variable for a target format */ | |
54 | #define TARGET_ENVIRON "GNUTARGET" | |
55 | ||
56 | /* Input sections which are put in a section of this name are actually | |
57 | discarded. */ | |
58 | #define DISCARD_SECTION_NAME "/DISCARD/" | |
59 | ||
18625d54 | 60 | /* A file name list */ |
89cdebba KH |
61 | typedef struct name_list { |
62 | const char *name; | |
63 | struct name_list *next; | |
64 | } | |
65 | name_list; | |
18625d54 | 66 | |
252b5132 RH |
67 | /* A wildcard specification. This is only used in ldgram.y, but it |
68 | winds up in ldgram.h, so we need to define it outside. */ | |
69 | ||
89cdebba | 70 | struct wildcard_spec { |
252b5132 | 71 | const char *name; |
18625d54 | 72 | struct name_list *exclude_name_list; |
b34976b6 | 73 | bfd_boolean sorted; |
252b5132 RH |
74 | }; |
75 | ||
b6bf44ba AM |
76 | struct wildcard_list { |
77 | struct wildcard_list *next; | |
78 | struct wildcard_spec spec; | |
79 | }; | |
80 | ||
35835446 JR |
81 | struct map_symbol_def { |
82 | struct bfd_link_hash_entry *entry; | |
83 | struct map_symbol_def *next; | |
84 | }; | |
85 | ||
252b5132 | 86 | /* Extra information we hold on sections */ |
35835446 JR |
87 | typedef struct lean_user_section_struct { |
88 | /* For output sections: pointer to the section where this data will go. */ | |
89 | struct lang_input_statement_struct *file; | |
90 | } lean_section_userdata_type; | |
91 | ||
92 | /* The initial part of fat_user_section_struct has to be idential with | |
93 | lean_user_section_struct. */ | |
94 | typedef struct fat_user_section_struct { | |
95 | /* For output sections: pointer to the section where this data will go. */ | |
252b5132 | 96 | struct lang_input_statement_struct *file; |
35835446 JR |
97 | /* For input sections, when writing a map file: head / tail of a linked |
98 | list of hash table entries for symbols defined in this section. */ | |
99 | struct map_symbol_def *map_symbol_def_head; | |
100 | struct map_symbol_def **map_symbol_def_tail; | |
101 | } fat_section_userdata_type; | |
102 | ||
103 | #define SECTION_USERDATA_SIZE \ | |
104 | (command_line.reduce_memory_overheads \ | |
105 | ? sizeof (lean_section_userdata_type) \ | |
106 | : sizeof (fat_section_userdata_type)) | |
252b5132 | 107 | |
252b5132 RH |
108 | #define get_userdata(x) ((x)->userdata) |
109 | ||
110 | #define BYTE_SIZE (1) | |
111 | #define SHORT_SIZE (2) | |
112 | #define LONG_SIZE (4) | |
113 | #define QUAD_SIZE (8) | |
114 | ||
89cdebba | 115 | typedef struct { |
252b5132 | 116 | /* 1 => assign space to common symbols even if `relocatable_output'. */ |
b34976b6 | 117 | bfd_boolean force_common_definition; |
4818e05f | 118 | |
b7a26f91 | 119 | /* 1 => do not assign addresses to common symbols. */ |
b34976b6 AM |
120 | bfd_boolean inhibit_common_definition; |
121 | bfd_boolean relax; | |
252b5132 RH |
122 | |
123 | /* Name of runtime interpreter to invoke. */ | |
124 | char *interpreter; | |
125 | ||
126 | /* Name to give runtime libary from the -soname argument. */ | |
127 | char *soname; | |
128 | ||
129 | /* Runtime library search path from the -rpath argument. */ | |
130 | char *rpath; | |
131 | ||
132 | /* Link time runtime library search path from the -rpath-link | |
133 | argument. */ | |
134 | char *rpath_link; | |
135 | ||
136 | /* Big or little endian as set on command line. */ | |
137 | enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE } endian; | |
138 | ||
b34976b6 | 139 | /* If TRUE, build MIPS embedded PIC relocation tables in the output |
252b5132 | 140 | file. */ |
b34976b6 | 141 | bfd_boolean embedded_relocs; |
252b5132 | 142 | |
b34976b6 AM |
143 | /* If TRUE, force generation of a file with a .exe file. */ |
144 | bfd_boolean force_exe_suffix; | |
252b5132 | 145 | |
b34976b6 AM |
146 | /* If TRUE, generate a cross reference report. */ |
147 | bfd_boolean cref; | |
252b5132 | 148 | |
b34976b6 | 149 | /* If TRUE (which is the default), warn about mismatched input |
252b5132 | 150 | files. */ |
b34976b6 | 151 | bfd_boolean warn_mismatch; |
252b5132 RH |
152 | |
153 | /* Remove unreferenced sections? */ | |
b34976b6 | 154 | bfd_boolean gc_sections; |
252b5132 RH |
155 | |
156 | /* Name of shared object whose symbol table should be filtered with | |
157 | this shared object. From the --filter option. */ | |
158 | char *filter_shlib; | |
159 | ||
160 | /* Name of shared object for whose symbol table this shared object | |
161 | is an auxiliary filter. From the --auxiliary option. */ | |
162 | char **auxiliary_filters; | |
163 | ||
164 | /* A version symbol to be applied to the symbol names found in the | |
165 | .exports sections. */ | |
166 | char *version_exports_section; | |
167 | ||
b34976b6 | 168 | /* If TRUE (the default) check section addresses, once compute, |
252b5132 | 169 | fpor overlaps. */ |
b34976b6 | 170 | bfd_boolean check_section_addresses; |
5cc18311 | 171 | |
312b768e NC |
172 | /* If TRUE allow the linking of input files in an unknown architecture |
173 | assuming that the user knows what they are doing. This was the old | |
174 | behaviour of the linker. The new default behaviour is to reject such | |
175 | input files. */ | |
176 | bfd_boolean accept_unknown_input_arch; | |
177 | ||
35835446 JR |
178 | /* If TRUE reduce memory overheads, at the expense of speed. |
179 | This will cause map file generation to use an O(N^2) algorithm. */ | |
180 | bfd_boolean reduce_memory_overheads; | |
181 | ||
252b5132 RH |
182 | } args_type; |
183 | ||
184 | extern args_type command_line; | |
185 | ||
186 | typedef int token_code_type; | |
187 | ||
89cdebba | 188 | typedef struct { |
252b5132 | 189 | bfd_size_type specified_data_size; |
b34976b6 AM |
190 | bfd_boolean magic_demand_paged; |
191 | bfd_boolean make_executable; | |
252b5132 | 192 | |
b34976b6 AM |
193 | /* If TRUE, doing a dynamic link. */ |
194 | bfd_boolean dynamic_link; | |
252b5132 | 195 | |
b34976b6 | 196 | /* If TRUE, -shared is supported. */ |
252b5132 RH |
197 | /* ??? A better way to do this is perhaps to define this in the |
198 | ld_emulation_xfer_struct since this is really a target dependent | |
199 | parameter. */ | |
b34976b6 | 200 | bfd_boolean has_shared; |
252b5132 | 201 | |
b34976b6 AM |
202 | /* If TRUE, build constructors. */ |
203 | bfd_boolean build_constructors; | |
252b5132 | 204 | |
b34976b6 AM |
205 | /* If TRUE, warn about any constructors. */ |
206 | bfd_boolean warn_constructors; | |
252b5132 | 207 | |
b34976b6 AM |
208 | /* If TRUE, warn about merging common symbols with others. */ |
209 | bfd_boolean warn_common; | |
252b5132 | 210 | |
b34976b6 AM |
211 | /* If TRUE, only warn once about a particular undefined symbol. */ |
212 | bfd_boolean warn_once; | |
252b5132 | 213 | |
b34976b6 | 214 | /* If TRUE, warn if multiple global-pointers are needed (Alpha |
252b5132 | 215 | only). */ |
b34976b6 | 216 | bfd_boolean warn_multiple_gp; |
252b5132 | 217 | |
b34976b6 | 218 | /* If TRUE, warn if the starting address of an output section |
252b5132 | 219 | changes due to the alignment of an input section. */ |
b34976b6 | 220 | bfd_boolean warn_section_align; |
252b5132 | 221 | |
b34976b6 AM |
222 | /* If TRUE, warning messages are fatal */ |
223 | bfd_boolean fatal_warnings; | |
7ce691ae | 224 | |
b34976b6 | 225 | bfd_boolean sort_common; |
252b5132 | 226 | |
b34976b6 | 227 | bfd_boolean text_read_only; |
252b5132 RH |
228 | |
229 | char *map_filename; | |
230 | FILE *map_file; | |
231 | ||
b34976b6 | 232 | bfd_boolean stats; |
252b5132 | 233 | |
a854a4a7 AM |
234 | /* If set, orphan input sections will be mapped to separate output |
235 | sections. */ | |
b34976b6 | 236 | bfd_boolean unique_orphan_sections; |
a854a4a7 AM |
237 | |
238 | unsigned int split_by_reloc; | |
239 | bfd_size_type split_by_file; | |
361b220e CD |
240 | |
241 | /* If set, only search library directories explicitly selected | |
242 | on the command line. */ | |
b34976b6 | 243 | bfd_boolean only_cmd_line_lib_dirs; |
2d643429 NC |
244 | |
245 | /* The size of the hash table to use. */ | |
246 | bfd_size_type hash_table_size; | |
252b5132 RH |
247 | } ld_config_type; |
248 | ||
249 | extern ld_config_type config; | |
250 | ||
89cdebba | 251 | typedef enum { |
252b5132 RH |
252 | lang_first_phase_enum, |
253 | lang_allocating_phase_enum, | |
254 | lang_final_phase_enum | |
255 | } lang_phase_type; | |
256 | ||
b9a8de1e | 257 | extern FILE * saved_script_handle; |
b34976b6 | 258 | extern bfd_boolean force_make_executable; |
252b5132 RH |
259 | |
260 | /* Non-zero if we are processing a --defsym from the command line. */ | |
261 | extern int parsing_defsym; | |
262 | ||
1579bae1 AM |
263 | extern int yyparse (void); |
264 | extern void add_cref (const char *, bfd *, asection *, bfd_vma); | |
265 | extern void output_cref (FILE *); | |
266 | extern void check_nocrossrefs (void); | |
267 | extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; | |
45455cdd | 268 | |
a1934524 AM |
269 | /* If gcc >= 2.6, we can give a function name, too. */ |
270 | #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) | |
1579bae1 | 271 | #define __PRETTY_FUNCTION__ NULL |
45455cdd ILT |
272 | #endif |
273 | ||
274 | #undef abort | |
275 | #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__) | |
276 | ||
252b5132 | 277 | #endif |