Commit | Line | Data |
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3a65329d | 1 | /* Motorola 68HC11/HC12-specific support for 32-bit ELF |
b2a8e766 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
3a65329d SC |
4 | Contributed by Stephane Carrez (stcarrez@nerim.fr) |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf32-m68hc1x.h" | |
28 | #include "elf/m68hc11.h" | |
29 | #include "opcode/m68hc11.h" | |
30 | ||
31 | ||
32 | #define m68hc12_stub_hash_lookup(table, string, create, copy) \ | |
33 | ((struct elf32_m68hc11_stub_hash_entry *) \ | |
34 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
35 | ||
36 | static struct elf32_m68hc11_stub_hash_entry* m68hc12_add_stub | |
0a6a3ebe SC |
37 | (const char *stub_name, |
38 | asection *section, | |
39 | struct m68hc11_elf_link_hash_table *htab); | |
3a65329d SC |
40 | |
41 | static struct bfd_hash_entry *stub_hash_newfunc | |
0a6a3ebe | 42 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
3a65329d | 43 | |
0a6a3ebe SC |
44 | static void m68hc11_elf_set_symbol (bfd* abfd, struct bfd_link_info *info, |
45 | const char* name, bfd_vma value, | |
46 | asection* sec); | |
3a65329d SC |
47 | |
48 | static bfd_boolean m68hc11_elf_export_one_stub | |
0a6a3ebe | 49 | (struct bfd_hash_entry *gen_entry, void *in_arg); |
3a65329d | 50 | |
0a6a3ebe | 51 | static void scan_sections_for_abi (bfd*, asection*, PTR); |
3a65329d SC |
52 | |
53 | struct m68hc11_scan_param | |
54 | { | |
55 | struct m68hc11_page_info* pinfo; | |
56 | bfd_boolean use_memory_banks; | |
57 | }; | |
58 | ||
59 | ||
60 | /* Create a 68HC11/68HC12 ELF linker hash table. */ | |
61 | ||
62 | struct m68hc11_elf_link_hash_table* | |
0a6a3ebe | 63 | m68hc11_elf_hash_table_create (bfd *abfd) |
3a65329d SC |
64 | { |
65 | struct m68hc11_elf_link_hash_table *ret; | |
66 | bfd_size_type amt = sizeof (struct m68hc11_elf_link_hash_table); | |
67 | ||
47247ced | 68 | ret = (struct m68hc11_elf_link_hash_table *) bfd_malloc (amt); |
3a65329d SC |
69 | if (ret == (struct m68hc11_elf_link_hash_table *) NULL) |
70 | return NULL; | |
71 | ||
47247ced | 72 | memset (ret, 0, amt); |
3a65329d SC |
73 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
74 | _bfd_elf_link_hash_newfunc)) | |
75 | { | |
47247ced | 76 | free (ret); |
3a65329d SC |
77 | return NULL; |
78 | } | |
79 | ||
80 | /* Init the stub hash table too. */ | |
81 | amt = sizeof (struct bfd_hash_table); | |
82 | ret->stub_hash_table = (struct bfd_hash_table*) bfd_malloc (amt); | |
83 | if (ret->stub_hash_table == NULL) | |
84 | { | |
47247ced | 85 | free (ret); |
3a65329d SC |
86 | return NULL; |
87 | } | |
88 | if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc)) | |
89 | return NULL; | |
90 | ||
91 | ret->stub_bfd = NULL; | |
92 | ret->stub_section = 0; | |
93 | ret->add_stub_section = NULL; | |
94 | ret->sym_sec.abfd = NULL; | |
95 | ||
96 | return ret; | |
97 | } | |
98 | ||
99 | /* Free the derived linker hash table. */ | |
100 | ||
101 | void | |
0a6a3ebe | 102 | m68hc11_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *hash) |
3a65329d SC |
103 | { |
104 | struct m68hc11_elf_link_hash_table *ret | |
105 | = (struct m68hc11_elf_link_hash_table *) hash; | |
106 | ||
107 | bfd_hash_table_free (ret->stub_hash_table); | |
108 | free (ret->stub_hash_table); | |
109 | _bfd_generic_link_hash_table_free (hash); | |
110 | } | |
111 | ||
112 | /* Assorted hash table functions. */ | |
113 | ||
114 | /* Initialize an entry in the stub hash table. */ | |
115 | ||
116 | static struct bfd_hash_entry * | |
0a6a3ebe SC |
117 | stub_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, |
118 | const char *string) | |
3a65329d SC |
119 | { |
120 | /* Allocate the structure if it has not already been allocated by a | |
121 | subclass. */ | |
122 | if (entry == NULL) | |
123 | { | |
124 | entry = bfd_hash_allocate (table, | |
125 | sizeof (struct elf32_m68hc11_stub_hash_entry)); | |
126 | if (entry == NULL) | |
127 | return entry; | |
128 | } | |
129 | ||
130 | /* Call the allocation method of the superclass. */ | |
131 | entry = bfd_hash_newfunc (entry, table, string); | |
132 | if (entry != NULL) | |
133 | { | |
134 | struct elf32_m68hc11_stub_hash_entry *eh; | |
135 | ||
136 | /* Initialize the local fields. */ | |
137 | eh = (struct elf32_m68hc11_stub_hash_entry *) entry; | |
138 | eh->stub_sec = NULL; | |
139 | eh->stub_offset = 0; | |
140 | eh->target_value = 0; | |
141 | eh->target_section = NULL; | |
142 | } | |
143 | ||
144 | return entry; | |
145 | } | |
146 | ||
147 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
148 | stub entry are initialised. */ | |
149 | ||
150 | static struct elf32_m68hc11_stub_hash_entry * | |
0a6a3ebe SC |
151 | m68hc12_add_stub (const char *stub_name, asection *section, |
152 | struct m68hc11_elf_link_hash_table *htab) | |
3a65329d SC |
153 | { |
154 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
155 | ||
156 | /* Enter this entry into the linker stub hash table. */ | |
157 | stub_entry = m68hc12_stub_hash_lookup (htab->stub_hash_table, stub_name, | |
158 | TRUE, FALSE); | |
159 | if (stub_entry == NULL) | |
160 | { | |
161 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
162 | bfd_archive_filename (section->owner), | |
163 | stub_name); | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | if (htab->stub_section == 0) | |
168 | { | |
169 | htab->stub_section = (*htab->add_stub_section) (".tramp", | |
170 | htab->tramp_section); | |
171 | } | |
172 | ||
173 | stub_entry->stub_sec = htab->stub_section; | |
174 | stub_entry->stub_offset = 0; | |
175 | return stub_entry; | |
176 | } | |
177 | ||
178 | /* Hook called by the linker routine which adds symbols from an object | |
179 | file. We use it for identify far symbols and force a loading of | |
180 | the trampoline handler. */ | |
181 | ||
182 | bfd_boolean | |
0a6a3ebe | 183 | elf32_m68hc11_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 184 | Elf_Internal_Sym *sym, |
0a6a3ebe SC |
185 | const char **namep ATTRIBUTE_UNUSED, |
186 | flagword *flagsp ATTRIBUTE_UNUSED, | |
187 | asection **secp ATTRIBUTE_UNUSED, | |
188 | bfd_vma *valp ATTRIBUTE_UNUSED) | |
3a65329d SC |
189 | { |
190 | if (sym->st_other & STO_M68HC12_FAR) | |
191 | { | |
192 | struct elf_link_hash_entry *h; | |
193 | ||
194 | h = (struct elf_link_hash_entry *) | |
195 | bfd_link_hash_lookup (info->hash, "__far_trampoline", | |
196 | FALSE, FALSE, FALSE); | |
197 | if (h == NULL) | |
198 | { | |
199 | struct bfd_link_hash_entry* entry = NULL; | |
200 | ||
201 | _bfd_generic_link_add_one_symbol (info, abfd, | |
202 | "__far_trampoline", | |
203 | BSF_GLOBAL, | |
204 | bfd_und_section_ptr, | |
205 | (bfd_vma) 0, (const char*) NULL, | |
206 | FALSE, FALSE, &entry); | |
207 | } | |
208 | ||
209 | } | |
210 | return TRUE; | |
211 | } | |
212 | ||
213 | /* External entry points for sizing and building linker stubs. */ | |
214 | ||
215 | /* Set up various things so that we can make a list of input sections | |
216 | for each output section included in the link. Returns -1 on error, | |
217 | 0 when no stubs will be needed, and 1 on success. */ | |
218 | ||
219 | int | |
0a6a3ebe | 220 | elf32_m68hc11_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
3a65329d SC |
221 | { |
222 | bfd *input_bfd; | |
223 | unsigned int bfd_count; | |
224 | int top_id, top_index; | |
225 | asection *section; | |
226 | asection **input_list, **list; | |
227 | bfd_size_type amt; | |
228 | asection *text_section; | |
229 | struct m68hc11_elf_link_hash_table *htab; | |
230 | ||
231 | htab = m68hc11_elf_hash_table (info); | |
232 | ||
233 | if (htab->root.root.creator->flavour != bfd_target_elf_flavour) | |
234 | return 0; | |
235 | ||
236 | /* Count the number of input BFDs and find the top input section id. | |
237 | Also search for an existing ".tramp" section so that we know | |
238 | where generated trampolines must go. Default to ".text" if we | |
239 | can't find it. */ | |
240 | htab->tramp_section = 0; | |
241 | text_section = 0; | |
242 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
243 | input_bfd != NULL; | |
244 | input_bfd = input_bfd->link_next) | |
245 | { | |
246 | bfd_count += 1; | |
247 | for (section = input_bfd->sections; | |
248 | section != NULL; | |
249 | section = section->next) | |
250 | { | |
251 | const char* name = bfd_get_section_name (input_bfd, section); | |
252 | ||
253 | if (!strcmp (name, ".tramp")) | |
254 | htab->tramp_section = section; | |
255 | ||
256 | if (!strcmp (name, ".text")) | |
257 | text_section = section; | |
258 | ||
259 | if (top_id < section->id) | |
260 | top_id = section->id; | |
261 | } | |
262 | } | |
263 | htab->bfd_count = bfd_count; | |
264 | if (htab->tramp_section == 0) | |
265 | htab->tramp_section = text_section; | |
266 | ||
267 | /* We can't use output_bfd->section_count here to find the top output | |
268 | section index as some sections may have been removed, and | |
269 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
270 | for (section = output_bfd->sections, top_index = 0; | |
271 | section != NULL; | |
272 | section = section->next) | |
273 | { | |
274 | if (top_index < section->index) | |
275 | top_index = section->index; | |
276 | } | |
277 | ||
278 | htab->top_index = top_index; | |
279 | amt = sizeof (asection *) * (top_index + 1); | |
280 | input_list = (asection **) bfd_malloc (amt); | |
281 | htab->input_list = input_list; | |
282 | if (input_list == NULL) | |
283 | return -1; | |
284 | ||
285 | /* For sections we aren't interested in, mark their entries with a | |
286 | value we can check later. */ | |
287 | list = input_list + top_index; | |
288 | do | |
289 | *list = bfd_abs_section_ptr; | |
290 | while (list-- != input_list); | |
291 | ||
292 | for (section = output_bfd->sections; | |
293 | section != NULL; | |
294 | section = section->next) | |
295 | { | |
296 | if ((section->flags & SEC_CODE) != 0) | |
297 | input_list[section->index] = NULL; | |
298 | } | |
299 | ||
300 | return 1; | |
301 | } | |
302 | ||
303 | /* Determine and set the size of the stub section for a final link. | |
304 | ||
305 | The basic idea here is to examine all the relocations looking for | |
306 | PC-relative calls to a target that is unreachable with a "bl" | |
307 | instruction. */ | |
308 | ||
309 | bfd_boolean | |
0a6a3ebe SC |
310 | elf32_m68hc11_size_stubs (bfd *output_bfd, bfd *stub_bfd, |
311 | struct bfd_link_info *info, | |
312 | asection * (*add_stub_section) (const char*, asection*)) | |
3a65329d SC |
313 | { |
314 | bfd *input_bfd; | |
315 | asection *section; | |
316 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
317 | unsigned int bfd_indx, bfd_count; | |
318 | bfd_size_type amt; | |
319 | asection *stub_sec; | |
320 | ||
321 | struct m68hc11_elf_link_hash_table *htab = m68hc11_elf_hash_table (info); | |
322 | ||
323 | /* Stash our params away. */ | |
324 | htab->stub_bfd = stub_bfd; | |
325 | htab->add_stub_section = add_stub_section; | |
326 | ||
327 | /* Count the number of input BFDs and find the top input section id. */ | |
328 | for (input_bfd = info->input_bfds, bfd_count = 0; | |
329 | input_bfd != NULL; | |
330 | input_bfd = input_bfd->link_next) | |
331 | { | |
332 | bfd_count += 1; | |
333 | } | |
334 | ||
335 | /* We want to read in symbol extension records only once. To do this | |
336 | we need to read in the local symbols in parallel and save them for | |
337 | later use; so hold pointers to the local symbols in an array. */ | |
338 | amt = sizeof (Elf_Internal_Sym *) * bfd_count; | |
339 | all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); | |
340 | if (all_local_syms == NULL) | |
341 | return FALSE; | |
342 | ||
343 | /* Walk over all the input BFDs, swapping in local symbols. */ | |
344 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
345 | input_bfd != NULL; | |
346 | input_bfd = input_bfd->link_next, bfd_indx++) | |
347 | { | |
348 | Elf_Internal_Shdr *symtab_hdr; | |
3a65329d SC |
349 | |
350 | /* We'll need the symbol table in a second. */ | |
351 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
352 | if (symtab_hdr->sh_info == 0) | |
353 | continue; | |
354 | ||
2a0e29b4 SC |
355 | /* We need an array of the local symbols attached to the input bfd. */ |
356 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
357 | if (local_syms == NULL) | |
358 | { | |
359 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
360 | symtab_hdr->sh_info, 0, | |
361 | NULL, NULL, NULL); | |
362 | /* Cache them for elf_link_input_bfd. */ | |
363 | symtab_hdr->contents = (unsigned char *) local_syms; | |
364 | } | |
3a65329d | 365 | if (local_syms == NULL) |
3a65329d | 366 | { |
2a0e29b4 SC |
367 | free (all_local_syms); |
368 | return FALSE; | |
3a65329d SC |
369 | } |
370 | ||
2a0e29b4 | 371 | all_local_syms[bfd_indx] = local_syms; |
3a65329d SC |
372 | } |
373 | ||
374 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
375 | input_bfd != NULL; | |
376 | input_bfd = input_bfd->link_next, bfd_indx++) | |
377 | { | |
378 | Elf_Internal_Shdr *symtab_hdr; | |
379 | Elf_Internal_Sym *local_syms; | |
380 | struct elf_link_hash_entry ** sym_hashes; | |
381 | ||
382 | sym_hashes = elf_sym_hashes (input_bfd); | |
383 | ||
384 | /* We'll need the symbol table in a second. */ | |
385 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
386 | if (symtab_hdr->sh_info == 0) | |
387 | continue; | |
388 | ||
389 | local_syms = all_local_syms[bfd_indx]; | |
390 | ||
391 | /* Walk over each section attached to the input bfd. */ | |
392 | for (section = input_bfd->sections; | |
393 | section != NULL; | |
394 | section = section->next) | |
395 | { | |
396 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
397 | ||
398 | /* If there aren't any relocs, then there's nothing more | |
399 | to do. */ | |
400 | if ((section->flags & SEC_RELOC) == 0 | |
401 | || section->reloc_count == 0) | |
402 | continue; | |
403 | ||
404 | /* If this section is a link-once section that will be | |
405 | discarded, then don't create any stubs. */ | |
406 | if (section->output_section == NULL | |
407 | || section->output_section->owner != output_bfd) | |
408 | continue; | |
409 | ||
410 | /* Get the relocs. */ | |
411 | internal_relocs | |
45d6a902 AM |
412 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, |
413 | (Elf_Internal_Rela *) NULL, | |
414 | info->keep_memory); | |
3a65329d SC |
415 | if (internal_relocs == NULL) |
416 | goto error_ret_free_local; | |
417 | ||
418 | /* Now examine each relocation. */ | |
419 | irela = internal_relocs; | |
420 | irelaend = irela + section->reloc_count; | |
421 | for (; irela < irelaend; irela++) | |
422 | { | |
423 | unsigned int r_type, r_indx; | |
424 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
425 | asection *sym_sec; | |
426 | bfd_vma sym_value; | |
427 | struct elf_link_hash_entry *hash; | |
428 | const char *stub_name; | |
429 | Elf_Internal_Sym *sym; | |
430 | ||
431 | r_type = ELF32_R_TYPE (irela->r_info); | |
432 | ||
433 | /* Only look at 16-bit relocs. */ | |
434 | if (r_type != (unsigned int) R_M68HC11_16) | |
435 | continue; | |
436 | ||
437 | /* Now determine the call target, its name, value, | |
438 | section. */ | |
439 | r_indx = ELF32_R_SYM (irela->r_info); | |
440 | if (r_indx < symtab_hdr->sh_info) | |
441 | { | |
442 | /* It's a local symbol. */ | |
443 | Elf_Internal_Shdr *hdr; | |
444 | bfd_boolean is_far; | |
445 | ||
446 | sym = local_syms + r_indx; | |
3a65329d SC |
447 | is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); |
448 | if (!is_far) | |
449 | continue; | |
7f888330 SC |
450 | |
451 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
452 | sym_sec = hdr->bfd_section; | |
3a65329d SC |
453 | stub_name = (bfd_elf_string_from_elf_section |
454 | (input_bfd, symtab_hdr->sh_link, | |
455 | sym->st_name)); | |
456 | sym_value = sym->st_value; | |
457 | hash = NULL; | |
458 | } | |
459 | else | |
460 | { | |
461 | /* It's an external symbol. */ | |
462 | int e_indx; | |
463 | ||
464 | e_indx = r_indx - symtab_hdr->sh_info; | |
465 | hash = (struct elf_link_hash_entry *) | |
466 | (sym_hashes[e_indx]); | |
467 | ||
468 | while (hash->root.type == bfd_link_hash_indirect | |
469 | || hash->root.type == bfd_link_hash_warning) | |
470 | hash = ((struct elf_link_hash_entry *) | |
471 | hash->root.u.i.link); | |
472 | ||
473 | if (hash->root.type == bfd_link_hash_defined | |
83774818 SC |
474 | || hash->root.type == bfd_link_hash_defweak |
475 | || hash->root.type == bfd_link_hash_new) | |
3a65329d SC |
476 | { |
477 | if (!(hash->other & STO_M68HC12_FAR)) | |
478 | continue; | |
479 | } | |
480 | else if (hash->root.type == bfd_link_hash_undefweak) | |
481 | { | |
482 | continue; | |
483 | } | |
484 | else if (hash->root.type == bfd_link_hash_undefined) | |
485 | { | |
486 | continue; | |
487 | } | |
488 | else | |
489 | { | |
490 | bfd_set_error (bfd_error_bad_value); | |
491 | goto error_ret_free_internal; | |
492 | } | |
493 | sym_sec = hash->root.u.def.section; | |
494 | sym_value = hash->root.u.def.value; | |
495 | stub_name = hash->root.root.string; | |
496 | } | |
497 | ||
498 | if (!stub_name) | |
499 | goto error_ret_free_internal; | |
500 | ||
501 | stub_entry = m68hc12_stub_hash_lookup | |
502 | (htab->stub_hash_table, | |
503 | stub_name, | |
504 | FALSE, FALSE); | |
505 | if (stub_entry == NULL) | |
506 | { | |
507 | if (add_stub_section == 0) | |
508 | continue; | |
509 | ||
510 | stub_entry = m68hc12_add_stub (stub_name, section, htab); | |
511 | if (stub_entry == NULL) | |
512 | { | |
513 | error_ret_free_internal: | |
514 | if (elf_section_data (section)->relocs == NULL) | |
515 | free (internal_relocs); | |
516 | goto error_ret_free_local; | |
517 | } | |
518 | } | |
519 | ||
520 | stub_entry->target_value = sym_value; | |
521 | stub_entry->target_section = sym_sec; | |
522 | } | |
523 | ||
524 | /* We're done with the internal relocs, free them. */ | |
525 | if (elf_section_data (section)->relocs == NULL) | |
526 | free (internal_relocs); | |
527 | } | |
528 | } | |
529 | ||
530 | if (add_stub_section) | |
531 | { | |
532 | /* OK, we've added some stubs. Find out the new size of the | |
533 | stub sections. */ | |
534 | for (stub_sec = htab->stub_bfd->sections; | |
535 | stub_sec != NULL; | |
536 | stub_sec = stub_sec->next) | |
537 | { | |
eea6121a | 538 | stub_sec->size = 0; |
3a65329d SC |
539 | } |
540 | ||
541 | bfd_hash_traverse (htab->stub_hash_table, htab->size_one_stub, htab); | |
542 | } | |
2a0e29b4 | 543 | free (all_local_syms); |
3a65329d SC |
544 | return TRUE; |
545 | ||
546 | error_ret_free_local: | |
2a0e29b4 | 547 | free (all_local_syms); |
3a65329d SC |
548 | return FALSE; |
549 | } | |
550 | ||
551 | /* Export the trampoline addresses in the symbol table. */ | |
552 | static bfd_boolean | |
0a6a3ebe | 553 | m68hc11_elf_export_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
3a65329d SC |
554 | { |
555 | struct bfd_link_info *info; | |
556 | struct m68hc11_elf_link_hash_table *htab; | |
557 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
558 | char* name; | |
559 | bfd_boolean result; | |
560 | ||
561 | info = (struct bfd_link_info *) in_arg; | |
562 | htab = m68hc11_elf_hash_table (info); | |
563 | ||
564 | /* Massage our args to the form they really have. */ | |
565 | stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry; | |
566 | ||
567 | /* Generate the trampoline according to HC11 or HC12. */ | |
568 | result = (* htab->build_one_stub) (gen_entry, in_arg); | |
569 | ||
570 | /* Make a printable name that does not conflict with the real function. */ | |
571 | name = alloca (strlen (stub_entry->root.string) + 16); | |
572 | sprintf (name, "tramp.%s", stub_entry->root.string); | |
573 | ||
574 | /* Export the symbol for debugging/disassembling. */ | |
575 | m68hc11_elf_set_symbol (htab->stub_bfd, info, name, | |
576 | stub_entry->stub_offset, | |
577 | stub_entry->stub_sec); | |
578 | return result; | |
579 | } | |
580 | ||
581 | /* Export a symbol or set its value and section. */ | |
582 | static void | |
0a6a3ebe SC |
583 | m68hc11_elf_set_symbol (bfd *abfd, struct bfd_link_info *info, |
584 | const char *name, bfd_vma value, asection *sec) | |
3a65329d SC |
585 | { |
586 | struct elf_link_hash_entry *h; | |
587 | ||
588 | h = (struct elf_link_hash_entry *) | |
589 | bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, FALSE); | |
590 | if (h == NULL) | |
591 | { | |
592 | _bfd_generic_link_add_one_symbol (info, abfd, | |
593 | name, | |
594 | BSF_GLOBAL, | |
595 | sec, | |
596 | value, | |
597 | (const char*) NULL, | |
598 | TRUE, FALSE, NULL); | |
599 | } | |
600 | else | |
601 | { | |
602 | h->root.type = bfd_link_hash_defined; | |
603 | h->root.u.def.value = value; | |
604 | h->root.u.def.section = sec; | |
605 | } | |
606 | } | |
607 | ||
608 | ||
609 | /* Build all the stubs associated with the current output file. The | |
610 | stubs are kept in a hash table attached to the main linker hash | |
611 | table. This function is called via m68hc12elf_finish in the | |
612 | linker. */ | |
613 | ||
614 | bfd_boolean | |
0a6a3ebe | 615 | elf32_m68hc11_build_stubs (bfd *abfd, struct bfd_link_info *info) |
3a65329d SC |
616 | { |
617 | asection *stub_sec; | |
618 | struct bfd_hash_table *table; | |
619 | struct m68hc11_elf_link_hash_table *htab; | |
620 | struct m68hc11_scan_param param; | |
621 | ||
622 | m68hc11_elf_get_bank_parameters (info); | |
623 | htab = m68hc11_elf_hash_table (info); | |
624 | ||
625 | for (stub_sec = htab->stub_bfd->sections; | |
626 | stub_sec != NULL; | |
627 | stub_sec = stub_sec->next) | |
628 | { | |
629 | bfd_size_type size; | |
630 | ||
631 | /* Allocate memory to hold the linker stubs. */ | |
eea6121a | 632 | size = stub_sec->size; |
3a65329d SC |
633 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); |
634 | if (stub_sec->contents == NULL && size != 0) | |
635 | return FALSE; | |
eea6121a | 636 | stub_sec->size = 0; |
3a65329d SC |
637 | } |
638 | ||
639 | /* Build the stubs as directed by the stub hash table. */ | |
640 | table = htab->stub_hash_table; | |
641 | bfd_hash_traverse (table, m68hc11_elf_export_one_stub, info); | |
642 | ||
643 | /* Scan the output sections to see if we use the memory banks. | |
644 | If so, export the symbols that define how the memory banks | |
645 | are mapped. This is used by gdb and the simulator to obtain | |
646 | the information. It can be used by programs to burn the eprom | |
647 | at the good addresses. */ | |
648 | param.use_memory_banks = FALSE; | |
649 | param.pinfo = &htab->pinfo; | |
650 | bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); | |
651 | if (param.use_memory_banks) | |
652 | { | |
653 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_START_NAME, | |
654 | htab->pinfo.bank_physical, | |
655 | bfd_abs_section_ptr); | |
656 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_VIRTUAL_NAME, | |
657 | htab->pinfo.bank_virtual, | |
658 | bfd_abs_section_ptr); | |
659 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_SIZE_NAME, | |
660 | htab->pinfo.bank_size, | |
661 | bfd_abs_section_ptr); | |
662 | } | |
663 | ||
664 | return TRUE; | |
665 | } | |
666 | ||
667 | void | |
0a6a3ebe | 668 | m68hc11_elf_get_bank_parameters (struct bfd_link_info *info) |
3a65329d SC |
669 | { |
670 | unsigned i; | |
671 | struct m68hc11_page_info *pinfo; | |
672 | struct bfd_link_hash_entry *h; | |
673 | ||
674 | pinfo = &m68hc11_elf_hash_table (info)->pinfo; | |
675 | if (pinfo->bank_param_initialized) | |
676 | return; | |
677 | ||
678 | pinfo->bank_virtual = M68HC12_BANK_VIRT; | |
679 | pinfo->bank_mask = M68HC12_BANK_MASK; | |
680 | pinfo->bank_physical = M68HC12_BANK_BASE; | |
681 | pinfo->bank_shift = M68HC12_BANK_SHIFT; | |
682 | pinfo->bank_size = 1 << M68HC12_BANK_SHIFT; | |
683 | ||
684 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_START_NAME, | |
685 | FALSE, FALSE, TRUE); | |
686 | if (h != (struct bfd_link_hash_entry*) NULL | |
687 | && h->type == bfd_link_hash_defined) | |
688 | pinfo->bank_physical = (h->u.def.value | |
689 | + h->u.def.section->output_section->vma | |
690 | + h->u.def.section->output_offset); | |
691 | ||
692 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_VIRTUAL_NAME, | |
693 | FALSE, FALSE, TRUE); | |
694 | if (h != (struct bfd_link_hash_entry*) NULL | |
695 | && h->type == bfd_link_hash_defined) | |
696 | pinfo->bank_virtual = (h->u.def.value | |
697 | + h->u.def.section->output_section->vma | |
698 | + h->u.def.section->output_offset); | |
699 | ||
700 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_SIZE_NAME, | |
701 | FALSE, FALSE, TRUE); | |
702 | if (h != (struct bfd_link_hash_entry*) NULL | |
703 | && h->type == bfd_link_hash_defined) | |
704 | pinfo->bank_size = (h->u.def.value | |
705 | + h->u.def.section->output_section->vma | |
706 | + h->u.def.section->output_offset); | |
707 | ||
708 | pinfo->bank_shift = 0; | |
709 | for (i = pinfo->bank_size; i != 0; i >>= 1) | |
710 | pinfo->bank_shift++; | |
711 | pinfo->bank_shift--; | |
712 | pinfo->bank_mask = (1 << pinfo->bank_shift) - 1; | |
713 | pinfo->bank_physical_end = pinfo->bank_physical + pinfo->bank_size; | |
714 | pinfo->bank_param_initialized = 1; | |
715 | ||
716 | h = bfd_link_hash_lookup (info->hash, "__far_trampoline", FALSE, | |
717 | FALSE, TRUE); | |
718 | if (h != (struct bfd_link_hash_entry*) NULL | |
719 | && h->type == bfd_link_hash_defined) | |
720 | pinfo->trampoline_addr = (h->u.def.value | |
721 | + h->u.def.section->output_section->vma | |
722 | + h->u.def.section->output_offset); | |
723 | } | |
724 | ||
725 | /* Return 1 if the address is in banked memory. | |
726 | This can be applied to a virtual address and to a physical address. */ | |
727 | int | |
0a6a3ebe | 728 | m68hc11_addr_is_banked (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
729 | { |
730 | if (addr >= pinfo->bank_virtual) | |
731 | return 1; | |
732 | ||
733 | if (addr >= pinfo->bank_physical && addr <= pinfo->bank_physical_end) | |
734 | return 1; | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | /* Return the physical address seen by the processor, taking | |
740 | into account banked memory. */ | |
741 | bfd_vma | |
0a6a3ebe | 742 | m68hc11_phys_addr (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
743 | { |
744 | if (addr < pinfo->bank_virtual) | |
745 | return addr; | |
746 | ||
747 | /* Map the address to the memory bank. */ | |
748 | addr -= pinfo->bank_virtual; | |
749 | addr &= pinfo->bank_mask; | |
750 | addr += pinfo->bank_physical; | |
751 | return addr; | |
752 | } | |
753 | ||
754 | /* Return the page number corresponding to an address in banked memory. */ | |
755 | bfd_vma | |
0a6a3ebe | 756 | m68hc11_phys_page (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
757 | { |
758 | if (addr < pinfo->bank_virtual) | |
759 | return 0; | |
760 | ||
761 | /* Map the address to the memory bank. */ | |
762 | addr -= pinfo->bank_virtual; | |
763 | addr >>= pinfo->bank_shift; | |
764 | addr &= 0x0ff; | |
765 | return addr; | |
766 | } | |
767 | ||
768 | /* This function is used for relocs which are only used for relaxing, | |
769 | which the linker should otherwise ignore. */ | |
770 | ||
771 | bfd_reloc_status_type | |
0a6a3ebe SC |
772 | m68hc11_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
773 | arelent *reloc_entry, | |
774 | asymbol *symbol ATTRIBUTE_UNUSED, | |
775 | void *data ATTRIBUTE_UNUSED, | |
776 | asection *input_section, | |
777 | bfd *output_bfd, | |
778 | char **error_message ATTRIBUTE_UNUSED) | |
3a65329d SC |
779 | { |
780 | if (output_bfd != NULL) | |
781 | reloc_entry->address += input_section->output_offset; | |
782 | return bfd_reloc_ok; | |
783 | } | |
784 | ||
785 | bfd_reloc_status_type | |
0a6a3ebe SC |
786 | m68hc11_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
787 | arelent *reloc_entry, | |
788 | asymbol *symbol, | |
789 | void *data ATTRIBUTE_UNUSED, | |
790 | asection *input_section, | |
791 | bfd *output_bfd, | |
792 | char **error_message ATTRIBUTE_UNUSED) | |
3a65329d SC |
793 | { |
794 | if (output_bfd != (bfd *) NULL | |
795 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
796 | && (! reloc_entry->howto->partial_inplace | |
797 | || reloc_entry->addend == 0)) | |
798 | { | |
799 | reloc_entry->address += input_section->output_offset; | |
800 | return bfd_reloc_ok; | |
801 | } | |
802 | ||
803 | if (output_bfd != NULL) | |
804 | return bfd_reloc_continue; | |
805 | ||
07515404 | 806 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
3a65329d SC |
807 | return bfd_reloc_outofrange; |
808 | ||
809 | abort(); | |
810 | } | |
811 | ||
812 | asection * | |
0a6a3ebe SC |
813 | elf32_m68hc11_gc_mark_hook (asection *sec, |
814 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
815 | Elf_Internal_Rela *rel, | |
816 | struct elf_link_hash_entry *h, | |
817 | Elf_Internal_Sym *sym) | |
3a65329d SC |
818 | { |
819 | if (h != NULL) | |
820 | { | |
821 | switch (ELF32_R_TYPE (rel->r_info)) | |
822 | { | |
823 | default: | |
824 | switch (h->root.type) | |
825 | { | |
826 | case bfd_link_hash_defined: | |
827 | case bfd_link_hash_defweak: | |
828 | return h->root.u.def.section; | |
829 | ||
830 | case bfd_link_hash_common: | |
831 | return h->root.u.c.p->section; | |
832 | ||
833 | default: | |
834 | break; | |
835 | } | |
836 | } | |
837 | } | |
838 | else | |
839 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
840 | ||
841 | return NULL; | |
842 | } | |
843 | ||
844 | bfd_boolean | |
0a6a3ebe SC |
845 | elf32_m68hc11_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
846 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
847 | asection *sec ATTRIBUTE_UNUSED, | |
848 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
3a65329d SC |
849 | { |
850 | /* We don't use got and plt entries for 68hc11/68hc12. */ | |
851 | return TRUE; | |
852 | } | |
853 | ||
854 | /* Look through the relocs for a section during the first phase. | |
855 | Since we don't do .gots or .plts, we just need to consider the | |
856 | virtual table relocs for gc. */ | |
857 | ||
858 | bfd_boolean | |
0a6a3ebe SC |
859 | elf32_m68hc11_check_relocs (bfd *abfd, struct bfd_link_info *info, |
860 | asection *sec, const Elf_Internal_Rela *relocs) | |
3a65329d SC |
861 | { |
862 | Elf_Internal_Shdr * symtab_hdr; | |
863 | struct elf_link_hash_entry ** sym_hashes; | |
864 | struct elf_link_hash_entry ** sym_hashes_end; | |
865 | const Elf_Internal_Rela * rel; | |
866 | const Elf_Internal_Rela * rel_end; | |
867 | ||
1049f94e | 868 | if (info->relocatable) |
3a65329d SC |
869 | return TRUE; |
870 | ||
871 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; | |
872 | sym_hashes = elf_sym_hashes (abfd); | |
873 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
874 | if (!elf_bad_symtab (abfd)) | |
875 | sym_hashes_end -= symtab_hdr->sh_info; | |
876 | ||
877 | rel_end = relocs + sec->reloc_count; | |
878 | ||
879 | for (rel = relocs; rel < rel_end; rel++) | |
880 | { | |
881 | struct elf_link_hash_entry * h; | |
882 | unsigned long r_symndx; | |
883 | ||
884 | r_symndx = ELF32_R_SYM (rel->r_info); | |
885 | ||
886 | if (r_symndx < symtab_hdr->sh_info) | |
887 | h = NULL; | |
888 | else | |
889 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
890 | ||
891 | switch (ELF32_R_TYPE (rel->r_info)) | |
892 | { | |
893 | /* This relocation describes the C++ object vtable hierarchy. | |
894 | Reconstruct it for later use during GC. */ | |
895 | case R_M68HC11_GNU_VTINHERIT: | |
c152c796 | 896 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
3a65329d SC |
897 | return FALSE; |
898 | break; | |
899 | ||
900 | /* This relocation describes which C++ vtable entries are actually | |
901 | used. Record for later use during GC. */ | |
902 | case R_M68HC11_GNU_VTENTRY: | |
c152c796 | 903 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
3a65329d SC |
904 | return FALSE; |
905 | break; | |
906 | } | |
907 | } | |
908 | ||
909 | return TRUE; | |
910 | } | |
911 | ||
912 | static bfd_boolean | |
59c2e50f L |
913 | m68hc11_get_relocation_value (bfd *input_bfd, struct bfd_link_info *info, |
914 | asection *input_section, | |
0a6a3ebe SC |
915 | asection **local_sections, |
916 | Elf_Internal_Sym *local_syms, | |
917 | Elf_Internal_Rela *rel, | |
918 | const char **name, | |
919 | bfd_vma *relocation, bfd_boolean *is_far) | |
3a65329d SC |
920 | { |
921 | Elf_Internal_Shdr *symtab_hdr; | |
922 | struct elf_link_hash_entry **sym_hashes; | |
923 | unsigned long r_symndx; | |
924 | asection *sec; | |
925 | struct elf_link_hash_entry *h; | |
926 | Elf_Internal_Sym *sym; | |
927 | const char* stub_name = 0; | |
928 | ||
59c2e50f L |
929 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
930 | sym_hashes = elf_sym_hashes (input_bfd); | |
3a65329d SC |
931 | |
932 | r_symndx = ELF32_R_SYM (rel->r_info); | |
933 | ||
934 | /* This is a final link. */ | |
935 | h = NULL; | |
936 | sym = NULL; | |
937 | sec = NULL; | |
938 | if (r_symndx < symtab_hdr->sh_info) | |
939 | { | |
940 | sym = local_syms + r_symndx; | |
941 | sec = local_sections[r_symndx]; | |
942 | *relocation = (sec->output_section->vma | |
943 | + sec->output_offset | |
944 | + sym->st_value); | |
945 | *is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); | |
946 | if (*is_far) | |
947 | stub_name = (bfd_elf_string_from_elf_section | |
59c2e50f | 948 | (input_bfd, symtab_hdr->sh_link, |
3a65329d SC |
949 | sym->st_name)); |
950 | } | |
951 | else | |
952 | { | |
59c2e50f L |
953 | bfd_boolean unresolved_reloc, warned; |
954 | ||
b2a8e766 AM |
955 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
956 | r_symndx, symtab_hdr, sym_hashes, | |
957 | h, sec, *relocation, unresolved_reloc, warned); | |
59c2e50f | 958 | |
3a65329d SC |
959 | *is_far = (h && (h->other & STO_M68HC12_FAR)); |
960 | stub_name = h->root.root.string; | |
961 | } | |
962 | ||
963 | if (h != NULL) | |
964 | *name = h->root.root.string; | |
965 | else | |
966 | { | |
967 | *name = (bfd_elf_string_from_elf_section | |
59c2e50f | 968 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
3a65329d SC |
969 | if (*name == NULL || **name == '\0') |
970 | *name = bfd_section_name (input_bfd, sec); | |
971 | } | |
972 | ||
973 | if (*is_far && ELF32_R_TYPE (rel->r_info) == R_M68HC11_16) | |
974 | { | |
975 | struct elf32_m68hc11_stub_hash_entry* stub; | |
976 | struct m68hc11_elf_link_hash_table *htab; | |
977 | ||
978 | htab = m68hc11_elf_hash_table (info); | |
979 | stub = m68hc12_stub_hash_lookup (htab->stub_hash_table, | |
980 | *name, FALSE, FALSE); | |
981 | if (stub) | |
982 | { | |
983 | *relocation = stub->stub_offset | |
984 | + stub->stub_sec->output_section->vma | |
985 | + stub->stub_sec->output_offset; | |
986 | *is_far = FALSE; | |
987 | } | |
988 | } | |
989 | return TRUE; | |
990 | } | |
991 | ||
992 | /* Relocate a 68hc11/68hc12 ELF section. */ | |
993 | bfd_boolean | |
0a6a3ebe SC |
994 | elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
995 | struct bfd_link_info *info, | |
996 | bfd *input_bfd, asection *input_section, | |
997 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
998 | Elf_Internal_Sym *local_syms, | |
999 | asection **local_sections) | |
3a65329d SC |
1000 | { |
1001 | Elf_Internal_Shdr *symtab_hdr; | |
1002 | struct elf_link_hash_entry **sym_hashes; | |
1003 | Elf_Internal_Rela *rel, *relend; | |
1004 | const char *name; | |
1005 | struct m68hc11_page_info *pinfo; | |
9c5bfbb7 | 1006 | const struct elf_backend_data * const ebd = get_elf_backend_data (input_bfd); |
3a65329d SC |
1007 | |
1008 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1009 | sym_hashes = elf_sym_hashes (input_bfd); | |
1010 | ||
1011 | /* Get memory bank parameters. */ | |
1012 | m68hc11_elf_get_bank_parameters (info); | |
1013 | pinfo = &m68hc11_elf_hash_table (info)->pinfo; | |
1014 | ||
1015 | rel = relocs; | |
1016 | relend = relocs + input_section->reloc_count; | |
1017 | for (; rel < relend; rel++) | |
1018 | { | |
1019 | int r_type; | |
1020 | arelent arel; | |
1021 | reloc_howto_type *howto; | |
1022 | unsigned long r_symndx; | |
1023 | Elf_Internal_Sym *sym; | |
1024 | asection *sec; | |
1025 | bfd_vma relocation; | |
1026 | bfd_reloc_status_type r = bfd_reloc_undefined; | |
1027 | bfd_vma phys_page; | |
1028 | bfd_vma phys_addr; | |
1029 | bfd_vma insn_addr; | |
1030 | bfd_vma insn_page; | |
1031 | bfd_boolean is_far; | |
1032 | ||
1033 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1034 | r_type = ELF32_R_TYPE (rel->r_info); | |
1035 | ||
1036 | if (r_type == R_M68HC11_GNU_VTENTRY | |
1037 | || r_type == R_M68HC11_GNU_VTINHERIT ) | |
1038 | continue; | |
1039 | ||
1049f94e | 1040 | if (info->relocatable) |
3a65329d | 1041 | { |
1049f94e | 1042 | /* This is a relocatable link. We don't have to change |
3a65329d SC |
1043 | anything, unless the reloc is against a section symbol, |
1044 | in which case we have to adjust according to where the | |
1045 | section symbol winds up in the output section. */ | |
1046 | if (r_symndx < symtab_hdr->sh_info) | |
1047 | { | |
1048 | sym = local_syms + r_symndx; | |
1049 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1050 | { | |
1051 | sec = local_sections[r_symndx]; | |
1052 | rel->r_addend += sec->output_offset + sym->st_value; | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | continue; | |
1057 | } | |
1058 | (*ebd->elf_info_to_howto_rel) (input_bfd, &arel, rel); | |
1059 | howto = arel.howto; | |
1060 | ||
59c2e50f L |
1061 | m68hc11_get_relocation_value (input_bfd, info, input_section, |
1062 | local_sections, local_syms, | |
3a65329d SC |
1063 | rel, &name, &relocation, &is_far); |
1064 | ||
1065 | /* Do the memory bank mapping. */ | |
1066 | phys_addr = m68hc11_phys_addr (pinfo, relocation + rel->r_addend); | |
1067 | phys_page = m68hc11_phys_page (pinfo, relocation + rel->r_addend); | |
1068 | switch (r_type) | |
1069 | { | |
1070 | case R_M68HC11_24: | |
1071 | /* Reloc used by 68HC12 call instruction. */ | |
1072 | bfd_put_16 (input_bfd, phys_addr, | |
1073 | (bfd_byte*) contents + rel->r_offset); | |
1074 | bfd_put_8 (input_bfd, phys_page, | |
1075 | (bfd_byte*) contents + rel->r_offset + 2); | |
1076 | r = bfd_reloc_ok; | |
1077 | r_type = R_M68HC11_NONE; | |
1078 | break; | |
1079 | ||
1080 | case R_M68HC11_NONE: | |
1081 | r = bfd_reloc_ok; | |
1082 | break; | |
1083 | ||
1084 | case R_M68HC11_LO16: | |
1085 | /* Reloc generated by %addr(expr) gas to obtain the | |
1086 | address as mapped in the memory bank window. */ | |
1087 | relocation = phys_addr; | |
1088 | break; | |
1089 | ||
1090 | case R_M68HC11_PAGE: | |
1091 | /* Reloc generated by %page(expr) gas to obtain the | |
1092 | page number associated with the address. */ | |
1093 | relocation = phys_page; | |
1094 | break; | |
1095 | ||
1096 | case R_M68HC11_16: | |
1097 | /* Get virtual address of instruction having the relocation. */ | |
1098 | if (is_far) | |
1099 | { | |
1100 | const char* msg; | |
1101 | char* buf; | |
1102 | msg = _("Reference to the far symbol `%s' using a wrong " | |
1103 | "relocation may result in incorrect execution"); | |
1104 | buf = alloca (strlen (msg) + strlen (name) + 10); | |
1105 | sprintf (buf, msg, name); | |
1106 | ||
1107 | (* info->callbacks->warning) | |
1108 | (info, buf, name, input_bfd, NULL, rel->r_offset); | |
1109 | } | |
1110 | ||
1111 | /* Get virtual address of instruction having the relocation. */ | |
1112 | insn_addr = input_section->output_section->vma | |
1113 | + input_section->output_offset | |
1114 | + rel->r_offset; | |
1115 | ||
1116 | insn_page = m68hc11_phys_page (pinfo, insn_addr); | |
1117 | ||
1118 | if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend) | |
1119 | && m68hc11_addr_is_banked (pinfo, insn_addr) | |
1120 | && phys_page != insn_page) | |
1121 | { | |
1122 | const char* msg; | |
1123 | char* buf; | |
1124 | ||
1125 | msg = _("banked address [%lx:%04lx] (%lx) is not in the same bank " | |
1126 | "as current banked address [%lx:%04lx] (%lx)"); | |
1127 | ||
1128 | buf = alloca (strlen (msg) + 128); | |
1129 | sprintf (buf, msg, phys_page, phys_addr, | |
1130 | (long) (relocation + rel->r_addend), | |
1131 | insn_page, m68hc11_phys_addr (pinfo, insn_addr), | |
1132 | (long) (insn_addr)); | |
1133 | if (!((*info->callbacks->warning) | |
1134 | (info, buf, name, input_bfd, input_section, | |
1135 | rel->r_offset))) | |
1136 | return FALSE; | |
1137 | break; | |
1138 | } | |
1139 | if (phys_page != 0 && insn_page == 0) | |
1140 | { | |
1141 | const char* msg; | |
1142 | char* buf; | |
1143 | ||
1144 | msg = _("reference to a banked address [%lx:%04lx] in the " | |
1145 | "normal address space at %04lx"); | |
1146 | ||
1147 | buf = alloca (strlen (msg) + 128); | |
1148 | sprintf (buf, msg, phys_page, phys_addr, insn_addr); | |
1149 | if (!((*info->callbacks->warning) | |
1150 | (info, buf, name, input_bfd, input_section, | |
1151 | insn_addr))) | |
1152 | return FALSE; | |
1153 | ||
1154 | relocation = phys_addr; | |
1155 | break; | |
1156 | } | |
1157 | ||
1158 | /* If this is a banked address use the phys_addr so that | |
1159 | we stay in the banked window. */ | |
1160 | if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend)) | |
1161 | relocation = phys_addr; | |
1162 | break; | |
1163 | } | |
1164 | if (r_type != R_M68HC11_NONE) | |
1165 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1166 | contents, rel->r_offset, | |
1167 | relocation, rel->r_addend); | |
1168 | ||
1169 | if (r != bfd_reloc_ok) | |
1170 | { | |
1171 | const char * msg = (const char *) 0; | |
1172 | ||
1173 | switch (r) | |
1174 | { | |
1175 | case bfd_reloc_overflow: | |
1176 | if (!((*info->callbacks->reloc_overflow) | |
1177 | (info, name, howto->name, (bfd_vma) 0, | |
1178 | input_bfd, input_section, rel->r_offset))) | |
1179 | return FALSE; | |
1180 | break; | |
1181 | ||
1182 | case bfd_reloc_undefined: | |
1183 | if (!((*info->callbacks->undefined_symbol) | |
1184 | (info, name, input_bfd, input_section, | |
1185 | rel->r_offset, TRUE))) | |
1186 | return FALSE; | |
1187 | break; | |
1188 | ||
1189 | case bfd_reloc_outofrange: | |
1190 | msg = _ ("internal error: out of range error"); | |
1191 | goto common_error; | |
1192 | ||
1193 | case bfd_reloc_notsupported: | |
1194 | msg = _ ("internal error: unsupported relocation error"); | |
1195 | goto common_error; | |
1196 | ||
1197 | case bfd_reloc_dangerous: | |
1198 | msg = _ ("internal error: dangerous error"); | |
1199 | goto common_error; | |
1200 | ||
1201 | default: | |
1202 | msg = _ ("internal error: unknown error"); | |
1203 | /* fall through */ | |
1204 | ||
1205 | common_error: | |
1206 | if (!((*info->callbacks->warning) | |
1207 | (info, msg, name, input_bfd, input_section, | |
1208 | rel->r_offset))) | |
1209 | return FALSE; | |
1210 | break; | |
1211 | } | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | return TRUE; | |
1216 | } | |
1217 | ||
1218 | ||
1219 | \f | |
1220 | /* Set and control ELF flags in ELF header. */ | |
1221 | ||
1222 | bfd_boolean | |
0a6a3ebe | 1223 | _bfd_m68hc11_elf_set_private_flags (bfd *abfd, flagword flags) |
3a65329d SC |
1224 | { |
1225 | BFD_ASSERT (!elf_flags_init (abfd) | |
1226 | || elf_elfheader (abfd)->e_flags == flags); | |
1227 | ||
1228 | elf_elfheader (abfd)->e_flags = flags; | |
1229 | elf_flags_init (abfd) = TRUE; | |
1230 | return TRUE; | |
1231 | } | |
1232 | ||
1233 | /* Merge backend specific data from an object file to the output | |
1234 | object file when linking. */ | |
1235 | ||
1236 | bfd_boolean | |
0a6a3ebe | 1237 | _bfd_m68hc11_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
3a65329d SC |
1238 | { |
1239 | flagword old_flags; | |
1240 | flagword new_flags; | |
1241 | bfd_boolean ok = TRUE; | |
1242 | ||
1243 | /* Check if we have the same endianess */ | |
1244 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
1245 | return FALSE; | |
1246 | ||
1247 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1248 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1249 | return TRUE; | |
1250 | ||
1251 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1252 | elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI; | |
1253 | old_flags = elf_elfheader (obfd)->e_flags; | |
1254 | ||
1255 | if (! elf_flags_init (obfd)) | |
1256 | { | |
1257 | elf_flags_init (obfd) = TRUE; | |
1258 | elf_elfheader (obfd)->e_flags = new_flags; | |
1259 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
1260 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
1261 | ||
1262 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1263 | && bfd_get_arch_info (obfd)->the_default) | |
1264 | { | |
1265 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
1266 | bfd_get_mach (ibfd))) | |
1267 | return FALSE; | |
1268 | } | |
1269 | ||
1270 | return TRUE; | |
1271 | } | |
1272 | ||
1273 | /* Check ABI compatibility. */ | |
1274 | if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32)) | |
1275 | { | |
1276 | (*_bfd_error_handler) | |
1277 | (_("%s: linking files compiled for 16-bit integers (-mshort) " | |
1278 | "and others for 32-bit integers"), | |
1279 | bfd_archive_filename (ibfd)); | |
1280 | ok = FALSE; | |
1281 | } | |
1282 | if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64)) | |
1283 | { | |
1284 | (*_bfd_error_handler) | |
1285 | (_("%s: linking files compiled for 32-bit double (-fshort-double) " | |
1286 | "and others for 64-bit double"), | |
1287 | bfd_archive_filename (ibfd)); | |
1288 | ok = FALSE; | |
1289 | } | |
47247ced SC |
1290 | |
1291 | /* Processor compatibility. */ | |
1292 | if (!EF_M68HC11_CAN_MERGE_MACH (new_flags, old_flags)) | |
1293 | { | |
1294 | (*_bfd_error_handler) | |
1295 | (_("%s: linking files compiled for HCS12 with " | |
1296 | "others compiled for HC12"), | |
1297 | bfd_archive_filename (ibfd)); | |
1298 | ok = FALSE; | |
1299 | } | |
1300 | new_flags = ((new_flags & ~EF_M68HC11_MACH_MASK) | |
1301 | | (EF_M68HC11_MERGE_MACH (new_flags, old_flags))); | |
1302 | ||
1303 | elf_elfheader (obfd)->e_flags = new_flags; | |
1304 | ||
17e58af0 SC |
1305 | new_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); |
1306 | old_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); | |
3a65329d SC |
1307 | |
1308 | /* Warn about any other mismatches */ | |
1309 | if (new_flags != old_flags) | |
1310 | { | |
1311 | (*_bfd_error_handler) | |
1312 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
1313 | bfd_archive_filename (ibfd), (unsigned long) new_flags, | |
1314 | (unsigned long) old_flags); | |
1315 | ok = FALSE; | |
1316 | } | |
1317 | ||
1318 | if (! ok) | |
1319 | { | |
1320 | bfd_set_error (bfd_error_bad_value); | |
1321 | return FALSE; | |
1322 | } | |
1323 | ||
1324 | return TRUE; | |
1325 | } | |
1326 | ||
1327 | bfd_boolean | |
0a6a3ebe | 1328 | _bfd_m68hc11_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
3a65329d SC |
1329 | { |
1330 | FILE *file = (FILE *) ptr; | |
1331 | ||
1332 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1333 | ||
1334 | /* Print normal ELF private data. */ | |
1335 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1336 | ||
1337 | /* xgettext:c-format */ | |
1338 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1339 | ||
1340 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32) | |
1341 | fprintf (file, _("[abi=32-bit int, ")); | |
1342 | else | |
1343 | fprintf (file, _("[abi=16-bit int, ")); | |
1344 | ||
1345 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64) | |
1346 | fprintf (file, _("64-bit double, ")); | |
1347 | else | |
1348 | fprintf (file, _("32-bit double, ")); | |
1349 | ||
1350 | if (strcmp (bfd_get_target (abfd), "elf32-m68hc11") == 0) | |
1351 | fprintf (file, _("cpu=HC11]")); | |
1352 | else if (elf_elfheader (abfd)->e_flags & EF_M68HCS12_MACH) | |
1353 | fprintf (file, _("cpu=HCS12]")); | |
1354 | else | |
1355 | fprintf (file, _("cpu=HC12]")); | |
1356 | ||
1357 | if (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS) | |
1358 | fprintf (file, _(" [memory=bank-model]")); | |
1359 | else | |
1360 | fprintf (file, _(" [memory=flat]")); | |
1361 | ||
1362 | fputc ('\n', file); | |
1363 | ||
1364 | return TRUE; | |
1365 | } | |
1366 | ||
0a6a3ebe SC |
1367 | static void scan_sections_for_abi (bfd *abfd ATTRIBUTE_UNUSED, |
1368 | asection *asect, void *arg) | |
3a65329d SC |
1369 | { |
1370 | struct m68hc11_scan_param* p = (struct m68hc11_scan_param*) arg; | |
1371 | ||
1372 | if (asect->vma >= p->pinfo->bank_virtual) | |
1373 | p->use_memory_banks = TRUE; | |
1374 | } | |
1375 | ||
1376 | /* Tweak the OSABI field of the elf header. */ | |
1377 | ||
1378 | void | |
0a6a3ebe | 1379 | elf32_m68hc11_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) |
3a65329d SC |
1380 | { |
1381 | struct m68hc11_scan_param param; | |
1382 | ||
1383 | if (link_info == 0) | |
1384 | return; | |
1385 | ||
1386 | m68hc11_elf_get_bank_parameters (link_info); | |
1387 | ||
1388 | param.use_memory_banks = FALSE; | |
1389 | param.pinfo = &m68hc11_elf_hash_table (link_info)->pinfo; | |
1390 | bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); | |
1391 | if (param.use_memory_banks) | |
1392 | { | |
1393 | Elf_Internal_Ehdr * i_ehdrp; | |
1394 | ||
1395 | i_ehdrp = elf_elfheader (abfd); | |
1396 | i_ehdrp->e_flags |= E_M68HC12_BANKS; | |
1397 | } | |
1398 | } | |
1399 |