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   boolean had_full_message;
  47
  48 } lang_memory_region_type ;
  49
  50 typedef struct lang_statement_header_struct
  51   {
  52     union  lang_statement_union  *next;
  53     enum statement_enum {
  54       lang_output_section_statement_enum,
  55       lang_assignment_statement_enum,
  56       lang_input_statement_enum,
  57       lang_address_statement_enum,
  58       lang_wild_statement_enum,
  59       lang_input_section_enum,
  60       lang_object_symbols_statement_enum,
  61       lang_fill_statement_enum,
  62       lang_data_statement_enum,
  63       lang_target_statement_enum,
  64       lang_output_statement_enum,
  65       lang_padding_statement_enum,
  66
  67       lang_afile_asection_pair_statement_enum,
  68         lang_constructors_statement_enum
  69       } type;
  70
  71   } lang_statement_header_type;
  72
  73
  74 typedef struct
  75   {
  76     lang_statement_header_type header;
  77     union etree_union *exp;
  78   }  lang_assignment_statement_type;
  79
  80
  81 typedef struct lang_target_statement_struct {
  82   lang_statement_header_type header;
  83   CONST char *target;
  84 } lang_target_statement_type;
  85
  86
  87 typedef struct lang_output_statement_struct {
  88   lang_statement_header_type header;
  89   CONST char *name;
  90 } lang_output_statement_type;
  91
  92
  93 typedef struct lang_output_section_statement_struct
  94   {
  95     lang_statement_header_type header;
  96     union etree_union *addr_tree;
  97     lang_statement_list_type children;
  98     CONST char *memspec;
  99     union lang_statement_union *next;
 100     CONST char *name;
 101     unsigned long subsection_alignment;
 102     boolean processed;
 103
 104     asection *bfd_section;
 105    int flags;
 106     struct memory_region_struct *region;
 107     size_t block_value;
 108     fill_type fill;
 109   } lang_output_section_statement_type;
 110
 111
 112 typedef struct {
 113   lang_statement_header_type header;
 114 } lang_common_statement_type;
 115
 116 typedef struct {
 117   lang_statement_header_type header;
 118 } lang_object_symbols_statement_type;
 119
 120 typedef struct {
 121   lang_statement_header_type header;
 122   fill_type fill;
 123 } lang_fill_statement_type;
 124
 125 typedef struct {
 126   lang_statement_header_type header;
 127   unsigned int type;
 128   union  etree_union *exp;
 129   bfd_vma value;
 130   asection *output_section;
 131   bfd_vma output_vma;
 132 } lang_data_statement_type;
 133
 134
 135
 136
 137 typedef struct lang_input_statement_struct
 138   {
 139     lang_statement_header_type header;
 140     /* Name of this file.  */
 141     CONST char *filename;
 142     /* Name to use for the symbol giving address of text start */
 143     /* Usually the same as filename, but for a file spec'd with -l
 144        this is the -l switch itself rather than the filename.  */
 145     CONST char *local_sym_name;
 146
 147     bfd *the_bfd;
 148
 149     boolean closed;
 150     file_ptr passive_position;
 151
 152     /* Symbol table of the file.  */
 153     asymbol **asymbols;
 154     unsigned int symbol_count;
 155
 156     /* For library members only */
 157
 158     /* For a library, points to chain of entries for the library members.  */
 159     struct lang_input_statement_struct *subfiles;
 160     /* For a library member, offset of the member within the archive.
 161        Zero for files that are not library members.  */
 162     /*  int starting_offset;*/
 163     /* Size of contents of this file, if library member.  */
 164     bfd_size_type total_size;
 165     /* For library member, points to the library's own entry.  */
 166     struct lang_input_statement_struct *superfile;
 167     /* For library member, points to next entry for next member.  */
 168     struct lang_input_statement_struct *chain;
 169     /* Point to the next file - whatever it is, wanders up and down
 170        archives */
 171
 172     union lang_statement_union  *next;
 173     /* Point to the next file, but skips archive contents */
 174     union  lang_statement_union  *next_real_file;
 175
 176     boolean is_archive;
 177
 178     /* 1 means search a set of directories for this file.  */
 179     boolean search_dirs_flag;
 180
 181     /* 1 means this is base file of incremental load.
 182        Do not load this file's text or data.
 183        Also default text_start to after this file's bss. */
 184
 185     boolean just_syms_flag;
 186
 187     boolean loaded;
 188
 189
 190     /*    unsigned int globals_in_this_file;*/
 191     CONST char *target;
 192     boolean real;
 193
 194     asection *common_section;
 195     asection *common_output_section;
 196   } lang_input_statement_type;
 197
 198 typedef struct {
 199   lang_statement_header_type header;
 200   asection *section;
 201   lang_input_statement_type *ifile;
 202
 203 } lang_input_section_type;
 204
 205
 206 typedef struct {
 207   lang_statement_header_type header;
 208   asection *section;
 209   union lang_statement_union *file;
 210 } lang_afile_asection_pair_statement_type;
 211
 212 typedef struct lang_wild_statement_struct {
 213   lang_statement_header_type header;
 214   CONST char *section_name;
 215   CONST char *filename;
 216   lang_statement_list_type children;
 217 } lang_wild_statement_type;
 218
 219 typedef struct lang_address_statement_struct {
 220   lang_statement_header_type header;
 221   CONST  char *section_name;
 222   union  etree_union *address;
 223 } lang_address_statement_type;
 224
 225 typedef struct {
 226   lang_statement_header_type header;
 227   bfd_vma output_offset;
 228   size_t size;
 229   asection *output_section;
 230   fill_type fill;
 231 } lang_padding_statement_type;
 232
 233 typedef union lang_statement_union
 234   {
 235     lang_statement_header_type header;
 236     union lang_statement_union *next;
 237     lang_wild_statement_type wild_statement;
 238     lang_data_statement_type data_statement;
 239     lang_address_statement_type address_statement;
 240     lang_output_section_statement_type output_section_statement;
 241     lang_afile_asection_pair_statement_type afile_asection_pair_statement;
 242     lang_assignment_statement_type assignment_statement;
 243     lang_input_statement_type input_statement;
 244     lang_target_statement_type target_statement;
 245     lang_output_statement_type output_statement;
 246     lang_input_section_type input_section;
 247     lang_common_statement_type common_statement;
 248     lang_object_symbols_statement_type object_symbols_statement;
 249     lang_fill_statement_type fill_statement;
 250     lang_padding_statement_type padding_statement;
 251   } lang_statement_union_type;
 252
 253
 254
 255 PROTO(void,lang_init,(void));
 256 PROTO(struct memory_region_struct ,
 257       *lang_memory_region_lookup,(CONST
 258                                   char *CONST));
 259
 260
 261 PROTO(void ,lang_map,(void));
 262 PROTO(void,lang_set_flags,(int  *, CONST char *));
 263 PROTO(void,lang_add_output,(CONST char *));
 264
 265 PROTO(void,lang_final,(void));
 266 PROTO(struct symbol_cache_entry *,create_symbol,(CONST char *, unsigned int, struct sec *));
 267 PROTO(void ,lang_process,(void));
 268 PROTO(void ,lang_section_start,(CONST char *, union etree_union *));
 269 PROTO(void,lang_add_entry,(CONST char *));
 270 PROTO(void,lang_add_target,(CONST char *));
 271 PROTO(void,lang_add_wild,(CONST char *CONST , CONST char *CONST));
 272 PROTO(void,lang_add_map,(CONST char *));
 273 PROTO(void,lang_add_fill,(int));
 274 PROTO(void,lang_add_assignment,(union etree_union *));
 275 PROTO(void,lang_add_attribute,(enum statement_enum));
 276 PROTO(void,lang_startup,(CONST char *));
 277 PROTO(void,lang_float,(enum bfd_boolean));
 278 PROTO(void,lang_leave_output_section_statement,(bfd_vma, CONST char *));
 279 PROTO(void,lang_abs_symbol_at_end_of,(CONST char *, CONST char *));
 280 PROTO(void,lang_abs_symbol_at_beginning_of,(CONST char *, CONST char *));
 281 PROTO(void,lang_statement_append,(struct statement_list *, union lang_statement_union *, union lang_statement_union **));
 282 PROTO(void, lang_for_each_file,(void (*dothis)(lang_input_statement_type *)));
 283
 284
 285 #define LANG_FOR_EACH_INPUT_STATEMENT(statement)               \
 286   extern lang_statement_list_type file_chain;                   \
 287   lang_input_statement_type *statement;                         \
 288   for (statement = (lang_input_statement_type *)file_chain.head;\
 289        statement != (lang_input_statement_type *)NULL;          \
 290        statement = (lang_input_statement_type *)statement->next)\
 291
 292 #define LANG_FOR_EACH_INPUT_SECTION(statement, abfd, section, x) \
 293   { extern lang_statement_list_type file_chain;                 \
 294       lang_input_statement_type *statement;                             \
 295         for (statement = (lang_input_statement_type *)file_chain.head;\
 296              statement != (lang_input_statement_type *)NULL;            \
 297              statement = (lang_input_statement_type *)statement->next)\
 298                  {                                                              \
 299           asection *section;                                    \
 300     bfd *abfd = statement->the_bfd;                             \
 301       for (section = abfd->sections;                            \
 302            section != (asection *)NULL;                         \
 303            section = section->next) {                           \
 304           x;                                                    \
 305   }                                                             \
 306   }                                                             \
 307  }
 308
 309 #define LANG_FOR_EACH_OUTPUT_SECTION(section, x)                \
 310   { extern bfd *output_bfd;                                     \
 311       asection *section;                                        \
 312         for (section = output_bfd->sections;                            \
 313              section != (asection *)NULL;                               \
 314              section = section->next)                           \
 315                  { x; }                                                 \
 316                  }
 317
 318
 319 PROTO(void, lang_process,(void));
 320 PROTO(void, ldlang_add_file,(lang_input_statement_type *));
 321
 322 PROTO(lang_output_section_statement_type
 323       *,lang_output_section_find,(CONST char * CONST));
 324
 325 PROTO(lang_input_statement_type *,
 326       lang_add_input_file,(CONST char *name,
 327                            lang_input_file_enum_type file_type,
 328                           CONST char *target));
 329 PROTO(lang_output_section_statement_type *,
 330       lang_output_section_statement_lookup,(CONST char * CONST name));
 331
 332 PROTO(void, ldlang_add_undef,(CONST char *CONST name));
 333 PROTO(void, lang_add_output_format,(CONST char *));
 334
 335
 336 void EXFUN(lang_list_init,( lang_statement_list_type*));
 337
 338 void EXFUN(lang_add_data,(int type, union etree_union *));
 339
 340 void EXFUN(lang_for_each_statement,(void (*func)()));
 341