ld/ldlang.h

   1 /* ldlang.h -
   2
   3    Copyright (C) 1991 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 1, 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
  19    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21
  22 typedef enum {
  23   lang_input_file_is_l_enum,
  24   lang_input_file_is_symbols_only_enum,
  25   lang_input_file_is_marker_enum,
  26   lang_input_file_is_fake_enum,
  27   lang_input_file_is_search_file_enum,
  28   lang_input_file_is_file_enum } lang_input_file_enum_type;
  29
  30 typedef unsigned short fill_type;
  31 typedef struct statement_list {
  32   union lang_statement_union *head;
  33   union lang_statement_union **tail;
  34 } lang_statement_list_type;
  35
  36
  37
  38
  39 typedef struct memory_region_struct {
  40   char *name;
  41   struct memory_region_struct *next;
  42   bfd_vma origin;
  43   bfd_offset length;
  44   bfd_vma current;
  45   int flags;
  46 } lang_memory_region_type ;
  47
  48 typedef struct lang_statement_header_struct
  49   {
  50     union  lang_statement_union  *next;
  51     enum statement_enum {
  52       lang_output_section_statement_enum,
  53       lang_assignment_statement_enum,
  54       lang_input_statement_enum,
  55       lang_address_statement_enum,
  56       lang_wild_statement_enum,
  57       lang_input_section_enum,
  58       lang_object_symbols_statement_enum,
  59       lang_fill_statement_enum,
  60       lang_data_statement_enum,
  61       lang_target_statement_enum,
  62       lang_output_statement_enum,
  63       lang_padding_statement_enum,
  64
  65       lang_afile_asection_pair_statement_enum,
  66         lang_constructors_statement_enum
  67       } type;
  68
  69   } lang_statement_header_type;
  70
  71
  72 typedef struct
  73   {
  74     lang_statement_header_type header;
  75     union etree_union *exp;
  76   }  lang_assignment_statement_type;
  77
  78
  79 typedef struct lang_target_statement_struct {
  80   lang_statement_header_type header;
  81   CONST char *target;
  82 } lang_target_statement_type;
  83
  84
  85 typedef struct lang_output_statement_struct {
  86   lang_statement_header_type header;
  87   CONST char *name;
  88 } lang_output_statement_type;
  89
  90
  91 typedef struct lang_output_section_statement_struct
  92   {
  93     lang_statement_header_type header;
  94     union etree_union *addr_tree;
  95     lang_statement_list_type children;
  96     CONST char *memspec;
  97     union lang_statement_union *next;
  98     CONST char *name;
  99     unsigned long subsection_alignment;
 100     boolean processed;
 101
 102     asection *bfd_section;
 103    int flags;
 104     struct memory_region_struct *region;
 105     size_t block_value;
 106     fill_type fill;
 107   } lang_output_section_statement_type;
 108
 109
 110 typedef struct {
 111   lang_statement_header_type header;
 112 } lang_common_statement_type;
 113
 114 typedef struct {
 115   lang_statement_header_type header;
 116 } lang_object_symbols_statement_type;
 117
 118 typedef struct {
 119   lang_statement_header_type header;
 120   fill_type fill;
 121 } lang_fill_statement_type;
 122
 123 typedef struct {
 124   lang_statement_header_type header;
 125   unsigned int type;
 126   union  etree_union *exp;
 127   bfd_vma value;
 128   asection *output_section;
 129   bfd_vma output_vma;
 130 } lang_data_statement_type;
 131
 132
 133
 134
 135 typedef struct lang_input_statement_struct
 136   {
 137     lang_statement_header_type header;
 138     /* Name of this file.  */
 139     CONST char *filename;
 140     /* Name to use for the symbol giving address of text start */
 141     /* Usually the same as filename, but for a file spec'd with -l
 142        this is the -l switch itself rather than the filename.  */
 143     CONST char *local_sym_name;
 144
 145     bfd *the_bfd;
 146
 147     boolean closed;
 148     file_ptr passive_position;
 149
 150     /* Symbol table of the file.  */
 151     asymbol **asymbols;
 152     unsigned int symbol_count;
 153
 154     /* For library members only */
 155
 156     /* For a library, points to chain of entries for the library members.  */
 157     struct lang_input_statement_struct *subfiles;
 158     /* For a library member, offset of the member within the archive.
 159        Zero for files that are not library members.  */
 160     /*  int starting_offset;*/
 161     /* Size of contents of this file, if library member.  */
 162     bfd_size_type total_size;
 163     /* For library member, points to the library's own entry.  */
 164     struct lang_input_statement_struct *superfile;
 165     /* For library member, points to next entry for next member.  */
 166     struct lang_input_statement_struct *chain;
 167     /* Point to the next file - whatever it is, wanders up and down
 168        archives */
 169
 170     union lang_statement_union  *next;
 171     /* Point to the next file, but skips archive contents */
 172     union  lang_statement_union  *next_real_file;
 173
 174     boolean is_archive;
 175
 176     /* 1 means search a set of directories for this file.  */
 177     boolean search_dirs_flag;
 178
 179     /* 1 means this is base file of incremental load.
 180        Do not load this file's text or data.
 181        Also default text_start to after this file's bss. */
 182
 183     boolean just_syms_flag;
 184
 185     boolean loaded;
 186
 187
 188     /*    unsigned int globals_in_this_file;*/
 189     CONST char *target;
 190     boolean real;
 191
 192     asection *common_section;
 193     asection *common_output_section;
 194   } lang_input_statement_type;
 195
 196 typedef struct {
 197   lang_statement_header_type header;
 198   asection *section;
 199   lang_input_statement_type *ifile;
 200
 201 } lang_input_section_type;
 202
 203
 204 typedef struct {
 205   lang_statement_header_type header;
 206   asection *section;
 207   union lang_statement_union *file;
 208 } lang_afile_asection_pair_statement_type;
 209
 210 typedef struct lang_wild_statement_struct {
 211   lang_statement_header_type header;
 212   CONST char *section_name;
 213   CONST char *filename;
 214   lang_statement_list_type children;
 215 } lang_wild_statement_type;
 216
 217 typedef struct lang_address_statement_struct {
 218   lang_statement_header_type header;
 219   CONST  char *section_name;
 220   union  etree_union *address;
 221 } lang_address_statement_type;
 222
 223 typedef struct {
 224   lang_statement_header_type header;
 225   bfd_vma output_offset;
 226   size_t size;
 227   asection *output_section;
 228   fill_type fill;
 229 } lang_padding_statement_type;
 230
 231 typedef union lang_statement_union
 232   {
 233     lang_statement_header_type header;
 234     union lang_statement_union *next;
 235     lang_wild_statement_type wild_statement;
 236     lang_data_statement_type data_statement;
 237     lang_address_statement_type address_statement;
 238     lang_output_section_statement_type output_section_statement;
 239     lang_afile_asection_pair_statement_type afile_asection_pair_statement;
 240     lang_assignment_statement_type assignment_statement;
 241     lang_input_statement_type input_statement;
 242     lang_target_statement_type target_statement;
 243     lang_output_statement_type output_statement;
 244     lang_input_section_type input_section;
 245     lang_common_statement_type common_statement;
 246     lang_object_symbols_statement_type object_symbols_statement;
 247     lang_fill_statement_type fill_statement;
 248     lang_padding_statement_type padding_statement;
 249   } lang_statement_union_type;
 250
 251
 252
 253 PROTO(void,lang_init,(void));
 254 PROTO(struct memory_region_struct ,
 255       *lang_memory_region_lookup,(CONST
 256                                   char *CONST));
 257
 258
 259 PROTO(void ,lang_map,(FILE *));
 260 PROTO(void,lang_set_flags,(int  *, CONST char *));
 261 PROTO(void,lang_add_output,(CONST char *));
 262
 263 PROTO(void,lang_final,(void));
 264 PROTO(struct symbol_cache_entry *,create_symbol,(CONST char *, unsigned int, struct sec *));
 265 PROTO(void ,lang_process,(void));
 266 PROTO(void ,lang_section_start,(CONST char *, union etree_union *));
 267 PROTO(void,lang_add_entry,(CONST char *));
 268 PROTO(void,lang_add_target,(CONST char *));
 269 PROTO(void,lang_add_wild,(CONST char *CONST , CONST char *CONST));
 270 PROTO(void,lang_add_map,(CONST char *));
 271 PROTO(void,lang_add_fill,(int));
 272 PROTO(void,lang_add_assignment,(union etree_union *));
 273 PROTO(void,lang_add_attribute,(enum statement_enum));
 274 PROTO(void,lang_startup,(CONST char *));
 275 PROTO(void,lang_float,(enum bfd_boolean));
 276 PROTO(void,lang_leave_output_section_statement,(bfd_vma, CONST char *));
 277 PROTO(void,lang_abs_symbol_at_end_of,(CONST char *, CONST char *));
 278 PROTO(void,lang_abs_symbol_at_beginning_of,(CONST char *, CONST char *));
 279 PROTO(void,lang_statement_append,(struct statement_list *, union lang_statement_union *, union lang_statement_union **));
 280 PROTO(void, lang_for_each_file,(void (*dothis)(lang_input_statement_type *)));
 281
 282
 283 #define LANG_FOR_EACH_INPUT_STATEMENT(statement)               \
 284   extern lang_statement_list_type file_chain;                   \
 285   lang_input_statement_type *statement;                         \
 286   for (statement = (lang_input_statement_type *)file_chain.head;\
 287        statement != (lang_input_statement_type *)NULL;          \
 288        statement = (lang_input_statement_type *)statement->next)\
 289
 290 #define LANG_FOR_EACH_INPUT_SECTION(statement, abfd, section, x) \
 291   { extern lang_statement_list_type file_chain;                 \
 292       lang_input_statement_type *statement;                             \
 293         for (statement = (lang_input_statement_type *)file_chain.head;\
 294              statement != (lang_input_statement_type *)NULL;            \
 295              statement = (lang_input_statement_type *)statement->next)\
 296                  {                                                              \
 297           asection *section;                                    \
 298     bfd *abfd = statement->the_bfd;                             \
 299       for (section = abfd->sections;                            \
 300            section != (asection *)NULL;                         \
 301            section = section->next) {                           \
 302           x;                                                    \
 303   }                                                             \
 304   }                                                             \
 305  }
 306
 307 #define LANG_FOR_EACH_OUTPUT_SECTION(section, x)                \
 308   { extern bfd *output_bfd;                                     \
 309       asection *section;                                        \
 310         for (section = output_bfd->sections;                            \
 311              section != (asection *)NULL;                               \
 312              section = section->next)                           \
 313                  { x; }                                                 \
 314                  }
 315
 316
 317 PROTO(void, lang_process,(void));
 318 PROTO(void, ldlang_add_file,(lang_input_statement_type *));
 319
 320 PROTO(lang_output_section_statement_type
 321       *,lang_output_section_find,(CONST char * CONST));
 322
 323 PROTO(lang_input_statement_type *,
 324       lang_add_input_file,(char *name,
 325                            lang_input_file_enum_type file_type,
 326                            char *target));
 327 PROTO(lang_output_section_statement_type *,
 328       lang_output_section_statement_lookup,(CONST char * CONST name));
 329
 330 PROTO(void, ldlang_add_undef,(CONST char *CONST name));
 331 PROTO(void, lang_add_output_format,(CONST char *));
 332
 333
 334 void EXFUN(lang_list_init,( lang_statement_list_type*));
 335
 336 void EXFUN(lang_add_data,(int type, union etree_union *));