Commit | Line | Data |
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3a65329d | 1 | /* Motorola 68HC11/HC12-specific support for 32-bit ELF |
2571583a | 2 | Copyright (C) 1999-2017 Free Software Foundation, Inc. |
3a65329d SC |
3 | Contributed by Stephane Carrez (stcarrez@nerim.fr) |
4 | ||
cd123cb7 NC |
5 | This file is part of BFD, the Binary File Descriptor library. |
6 | ||
7 | This program 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 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program 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 this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
3a65329d | 21 | |
3a65329d | 22 | #include "sysdep.h" |
df7b86aa | 23 | #include "alloca-conf.h" |
3db64b00 | 24 | #include "bfd.h" |
3a65329d SC |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf32-m68hc1x.h" | |
29 | #include "elf/m68hc11.h" | |
30 | #include "opcode/m68hc11.h" | |
e1fa0163 | 31 | #include "libiberty.h" |
3a65329d SC |
32 | |
33 | #define m68hc12_stub_hash_lookup(table, string, create, copy) \ | |
34 | ((struct elf32_m68hc11_stub_hash_entry *) \ | |
35 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
36 | ||
37 | static struct elf32_m68hc11_stub_hash_entry* m68hc12_add_stub | |
0a6a3ebe SC |
38 | (const char *stub_name, |
39 | asection *section, | |
40 | struct m68hc11_elf_link_hash_table *htab); | |
3a65329d SC |
41 | |
42 | static struct bfd_hash_entry *stub_hash_newfunc | |
0a6a3ebe | 43 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
3a65329d | 44 | |
0a6a3ebe SC |
45 | static void m68hc11_elf_set_symbol (bfd* abfd, struct bfd_link_info *info, |
46 | const char* name, bfd_vma value, | |
47 | asection* sec); | |
3a65329d SC |
48 | |
49 | static bfd_boolean m68hc11_elf_export_one_stub | |
0a6a3ebe | 50 | (struct bfd_hash_entry *gen_entry, void *in_arg); |
3a65329d | 51 | |
2c3fc389 | 52 | static void scan_sections_for_abi (bfd*, asection*, void *); |
3a65329d SC |
53 | |
54 | struct m68hc11_scan_param | |
55 | { | |
56 | struct m68hc11_page_info* pinfo; | |
57 | bfd_boolean use_memory_banks; | |
58 | }; | |
59 | ||
60 | ||
68faa637 AM |
61 | /* Destroy a 68HC11/68HC12 ELF linker hash table. */ |
62 | ||
d495ab0d AM |
63 | static void |
64 | m68hc11_elf_bfd_link_hash_table_free (bfd *obfd) | |
68faa637 AM |
65 | { |
66 | struct m68hc11_elf_link_hash_table *ret | |
d495ab0d | 67 | = (struct m68hc11_elf_link_hash_table *) obfd->link.hash; |
68faa637 AM |
68 | |
69 | bfd_hash_table_free (ret->stub_hash_table); | |
70 | free (ret->stub_hash_table); | |
d495ab0d | 71 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
72 | } |
73 | ||
3a65329d SC |
74 | /* Create a 68HC11/68HC12 ELF linker hash table. */ |
75 | ||
76 | struct m68hc11_elf_link_hash_table* | |
0a6a3ebe | 77 | m68hc11_elf_hash_table_create (bfd *abfd) |
3a65329d SC |
78 | { |
79 | struct m68hc11_elf_link_hash_table *ret; | |
80 | bfd_size_type amt = sizeof (struct m68hc11_elf_link_hash_table); | |
81 | ||
7bf52ea2 | 82 | ret = (struct m68hc11_elf_link_hash_table *) bfd_zmalloc (amt); |
3a65329d SC |
83 | if (ret == (struct m68hc11_elf_link_hash_table *) NULL) |
84 | return NULL; | |
85 | ||
66eb6687 AM |
86 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
87 | _bfd_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
88 | sizeof (struct elf_link_hash_entry), |
89 | M68HC11_ELF_DATA)) | |
3a65329d | 90 | { |
47247ced | 91 | free (ret); |
3a65329d SC |
92 | return NULL; |
93 | } | |
94 | ||
95 | /* Init the stub hash table too. */ | |
96 | amt = sizeof (struct bfd_hash_table); | |
97 | ret->stub_hash_table = (struct bfd_hash_table*) bfd_malloc (amt); | |
98 | if (ret->stub_hash_table == NULL) | |
99 | { | |
d495ab0d | 100 | _bfd_elf_link_hash_table_free (abfd); |
3a65329d SC |
101 | return NULL; |
102 | } | |
66eb6687 AM |
103 | if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc, |
104 | sizeof (struct elf32_m68hc11_stub_hash_entry))) | |
d495ab0d AM |
105 | { |
106 | free (ret->stub_hash_table); | |
107 | _bfd_elf_link_hash_table_free (abfd); | |
108 | return NULL; | |
109 | } | |
110 | ret->root.root.hash_table_free = m68hc11_elf_bfd_link_hash_table_free; | |
3a65329d | 111 | |
3a65329d SC |
112 | return ret; |
113 | } | |
114 | ||
3a65329d SC |
115 | /* Assorted hash table functions. */ |
116 | ||
117 | /* Initialize an entry in the stub hash table. */ | |
118 | ||
119 | static struct bfd_hash_entry * | |
0a6a3ebe SC |
120 | stub_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, |
121 | const char *string) | |
3a65329d SC |
122 | { |
123 | /* Allocate the structure if it has not already been allocated by a | |
124 | subclass. */ | |
125 | if (entry == NULL) | |
126 | { | |
127 | entry = bfd_hash_allocate (table, | |
128 | sizeof (struct elf32_m68hc11_stub_hash_entry)); | |
129 | if (entry == NULL) | |
130 | return entry; | |
131 | } | |
132 | ||
133 | /* Call the allocation method of the superclass. */ | |
134 | entry = bfd_hash_newfunc (entry, table, string); | |
135 | if (entry != NULL) | |
136 | { | |
137 | struct elf32_m68hc11_stub_hash_entry *eh; | |
138 | ||
139 | /* Initialize the local fields. */ | |
140 | eh = (struct elf32_m68hc11_stub_hash_entry *) entry; | |
141 | eh->stub_sec = NULL; | |
142 | eh->stub_offset = 0; | |
143 | eh->target_value = 0; | |
144 | eh->target_section = NULL; | |
145 | } | |
146 | ||
147 | return entry; | |
148 | } | |
149 | ||
150 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
151 | stub entry are initialised. */ | |
152 | ||
153 | static struct elf32_m68hc11_stub_hash_entry * | |
0a6a3ebe SC |
154 | m68hc12_add_stub (const char *stub_name, asection *section, |
155 | struct m68hc11_elf_link_hash_table *htab) | |
3a65329d SC |
156 | { |
157 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
158 | ||
159 | /* Enter this entry into the linker stub hash table. */ | |
160 | stub_entry = m68hc12_stub_hash_lookup (htab->stub_hash_table, stub_name, | |
161 | TRUE, FALSE); | |
162 | if (stub_entry == NULL) | |
163 | { | |
695344c0 | 164 | /* xgettext:c-format */ |
4eca0228 AM |
165 | _bfd_error_handler (_("%B: cannot create stub entry %s"), |
166 | section->owner, stub_name); | |
3a65329d SC |
167 | return NULL; |
168 | } | |
169 | ||
170 | if (htab->stub_section == 0) | |
171 | { | |
172 | htab->stub_section = (*htab->add_stub_section) (".tramp", | |
173 | htab->tramp_section); | |
174 | } | |
175 | ||
176 | stub_entry->stub_sec = htab->stub_section; | |
177 | stub_entry->stub_offset = 0; | |
178 | return stub_entry; | |
179 | } | |
180 | ||
181 | /* Hook called by the linker routine which adds symbols from an object | |
182 | file. We use it for identify far symbols and force a loading of | |
183 | the trampoline handler. */ | |
184 | ||
185 | bfd_boolean | |
0a6a3ebe | 186 | elf32_m68hc11_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, |
555cd476 | 187 | Elf_Internal_Sym *sym, |
0a6a3ebe SC |
188 | const char **namep ATTRIBUTE_UNUSED, |
189 | flagword *flagsp ATTRIBUTE_UNUSED, | |
190 | asection **secp ATTRIBUTE_UNUSED, | |
191 | bfd_vma *valp ATTRIBUTE_UNUSED) | |
3a65329d SC |
192 | { |
193 | if (sym->st_other & STO_M68HC12_FAR) | |
194 | { | |
195 | struct elf_link_hash_entry *h; | |
196 | ||
197 | h = (struct elf_link_hash_entry *) | |
198 | bfd_link_hash_lookup (info->hash, "__far_trampoline", | |
199 | FALSE, FALSE, FALSE); | |
200 | if (h == NULL) | |
201 | { | |
202 | struct bfd_link_hash_entry* entry = NULL; | |
203 | ||
204 | _bfd_generic_link_add_one_symbol (info, abfd, | |
205 | "__far_trampoline", | |
206 | BSF_GLOBAL, | |
207 | bfd_und_section_ptr, | |
208 | (bfd_vma) 0, (const char*) NULL, | |
209 | FALSE, FALSE, &entry); | |
210 | } | |
211 | ||
212 | } | |
213 | return TRUE; | |
214 | } | |
215 | ||
5efbbc43 AM |
216 | /* Merge non-visibility st_other attributes, STO_M68HC12_FAR and |
217 | STO_M68HC12_INTERRUPT. */ | |
218 | ||
219 | void | |
220 | elf32_m68hc11_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
221 | const Elf_Internal_Sym *isym, | |
222 | bfd_boolean definition, | |
223 | bfd_boolean dynamic ATTRIBUTE_UNUSED) | |
224 | { | |
225 | if (definition) | |
226 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
227 | | ELF_ST_VISIBILITY (h->other)); | |
228 | } | |
229 | ||
3a65329d SC |
230 | /* External entry points for sizing and building linker stubs. */ |
231 | ||
232 | /* Set up various things so that we can make a list of input sections | |
233 | for each output section included in the link. Returns -1 on error, | |
234 | 0 when no stubs will be needed, and 1 on success. */ | |
235 | ||
236 | int | |
0a6a3ebe | 237 | elf32_m68hc11_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
3a65329d SC |
238 | { |
239 | bfd *input_bfd; | |
240 | unsigned int bfd_count; | |
7292b3ac | 241 | unsigned int top_id, top_index; |
3a65329d SC |
242 | asection *section; |
243 | asection **input_list, **list; | |
244 | bfd_size_type amt; | |
245 | asection *text_section; | |
246 | struct m68hc11_elf_link_hash_table *htab; | |
247 | ||
248 | htab = m68hc11_elf_hash_table (info); | |
4dfe6ac6 NC |
249 | if (htab == NULL) |
250 | return -1; | |
3a65329d | 251 | |
f13a99db | 252 | if (bfd_get_flavour (info->output_bfd) != bfd_target_elf_flavour) |
3a65329d SC |
253 | return 0; |
254 | ||
255 | /* Count the number of input BFDs and find the top input section id. | |
256 | Also search for an existing ".tramp" section so that we know | |
257 | where generated trampolines must go. Default to ".text" if we | |
258 | can't find it. */ | |
259 | htab->tramp_section = 0; | |
260 | text_section = 0; | |
261 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
262 | input_bfd != NULL; | |
c72f2fb2 | 263 | input_bfd = input_bfd->link.next) |
3a65329d SC |
264 | { |
265 | bfd_count += 1; | |
266 | for (section = input_bfd->sections; | |
267 | section != NULL; | |
268 | section = section->next) | |
269 | { | |
270 | const char* name = bfd_get_section_name (input_bfd, section); | |
271 | ||
272 | if (!strcmp (name, ".tramp")) | |
273 | htab->tramp_section = section; | |
274 | ||
275 | if (!strcmp (name, ".text")) | |
276 | text_section = section; | |
277 | ||
278 | if (top_id < section->id) | |
279 | top_id = section->id; | |
280 | } | |
281 | } | |
282 | htab->bfd_count = bfd_count; | |
283 | if (htab->tramp_section == 0) | |
284 | htab->tramp_section = text_section; | |
285 | ||
286 | /* We can't use output_bfd->section_count here to find the top output | |
287 | section index as some sections may have been removed, and | |
8423293d | 288 | strip_excluded_output_sections doesn't renumber the indices. */ |
3a65329d SC |
289 | for (section = output_bfd->sections, top_index = 0; |
290 | section != NULL; | |
291 | section = section->next) | |
292 | { | |
293 | if (top_index < section->index) | |
294 | top_index = section->index; | |
295 | } | |
296 | ||
297 | htab->top_index = top_index; | |
298 | amt = sizeof (asection *) * (top_index + 1); | |
299 | input_list = (asection **) bfd_malloc (amt); | |
300 | htab->input_list = input_list; | |
301 | if (input_list == NULL) | |
302 | return -1; | |
303 | ||
304 | /* For sections we aren't interested in, mark their entries with a | |
305 | value we can check later. */ | |
306 | list = input_list + top_index; | |
307 | do | |
308 | *list = bfd_abs_section_ptr; | |
309 | while (list-- != input_list); | |
310 | ||
311 | for (section = output_bfd->sections; | |
312 | section != NULL; | |
313 | section = section->next) | |
314 | { | |
315 | if ((section->flags & SEC_CODE) != 0) | |
316 | input_list[section->index] = NULL; | |
317 | } | |
318 | ||
319 | return 1; | |
320 | } | |
321 | ||
322 | /* Determine and set the size of the stub section for a final link. | |
323 | ||
324 | The basic idea here is to examine all the relocations looking for | |
325 | PC-relative calls to a target that is unreachable with a "bl" | |
326 | instruction. */ | |
327 | ||
328 | bfd_boolean | |
0a6a3ebe SC |
329 | elf32_m68hc11_size_stubs (bfd *output_bfd, bfd *stub_bfd, |
330 | struct bfd_link_info *info, | |
331 | asection * (*add_stub_section) (const char*, asection*)) | |
3a65329d SC |
332 | { |
333 | bfd *input_bfd; | |
334 | asection *section; | |
335 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
336 | unsigned int bfd_indx, bfd_count; | |
337 | bfd_size_type amt; | |
338 | asection *stub_sec; | |
3a65329d SC |
339 | struct m68hc11_elf_link_hash_table *htab = m68hc11_elf_hash_table (info); |
340 | ||
4dfe6ac6 NC |
341 | if (htab == NULL) |
342 | return FALSE; | |
343 | ||
3a65329d SC |
344 | /* Stash our params away. */ |
345 | htab->stub_bfd = stub_bfd; | |
346 | htab->add_stub_section = add_stub_section; | |
347 | ||
348 | /* Count the number of input BFDs and find the top input section id. */ | |
349 | for (input_bfd = info->input_bfds, bfd_count = 0; | |
350 | input_bfd != NULL; | |
c72f2fb2 | 351 | input_bfd = input_bfd->link.next) |
4dfe6ac6 | 352 | bfd_count += 1; |
3a65329d SC |
353 | |
354 | /* We want to read in symbol extension records only once. To do this | |
355 | we need to read in the local symbols in parallel and save them for | |
356 | later use; so hold pointers to the local symbols in an array. */ | |
357 | amt = sizeof (Elf_Internal_Sym *) * bfd_count; | |
358 | all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); | |
359 | if (all_local_syms == NULL) | |
360 | return FALSE; | |
361 | ||
362 | /* Walk over all the input BFDs, swapping in local symbols. */ | |
363 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
364 | input_bfd != NULL; | |
c72f2fb2 | 365 | input_bfd = input_bfd->link.next, bfd_indx++) |
3a65329d SC |
366 | { |
367 | Elf_Internal_Shdr *symtab_hdr; | |
3a65329d SC |
368 | |
369 | /* We'll need the symbol table in a second. */ | |
370 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
371 | if (symtab_hdr->sh_info == 0) | |
372 | continue; | |
373 | ||
2a0e29b4 SC |
374 | /* We need an array of the local symbols attached to the input bfd. */ |
375 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
376 | if (local_syms == NULL) | |
377 | { | |
378 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
379 | symtab_hdr->sh_info, 0, | |
380 | NULL, NULL, NULL); | |
381 | /* Cache them for elf_link_input_bfd. */ | |
382 | symtab_hdr->contents = (unsigned char *) local_syms; | |
383 | } | |
3a65329d | 384 | if (local_syms == NULL) |
3a65329d | 385 | { |
2a0e29b4 SC |
386 | free (all_local_syms); |
387 | return FALSE; | |
3a65329d SC |
388 | } |
389 | ||
2a0e29b4 | 390 | all_local_syms[bfd_indx] = local_syms; |
3a65329d SC |
391 | } |
392 | ||
393 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
394 | input_bfd != NULL; | |
c72f2fb2 | 395 | input_bfd = input_bfd->link.next, bfd_indx++) |
3a65329d SC |
396 | { |
397 | Elf_Internal_Shdr *symtab_hdr; | |
3a65329d SC |
398 | struct elf_link_hash_entry ** sym_hashes; |
399 | ||
400 | sym_hashes = elf_sym_hashes (input_bfd); | |
401 | ||
402 | /* We'll need the symbol table in a second. */ | |
403 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
404 | if (symtab_hdr->sh_info == 0) | |
405 | continue; | |
406 | ||
407 | local_syms = all_local_syms[bfd_indx]; | |
408 | ||
409 | /* Walk over each section attached to the input bfd. */ | |
410 | for (section = input_bfd->sections; | |
411 | section != NULL; | |
412 | section = section->next) | |
413 | { | |
414 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
415 | ||
416 | /* If there aren't any relocs, then there's nothing more | |
417 | to do. */ | |
418 | if ((section->flags & SEC_RELOC) == 0 | |
419 | || section->reloc_count == 0) | |
420 | continue; | |
421 | ||
422 | /* If this section is a link-once section that will be | |
423 | discarded, then don't create any stubs. */ | |
424 | if (section->output_section == NULL | |
425 | || section->output_section->owner != output_bfd) | |
426 | continue; | |
427 | ||
428 | /* Get the relocs. */ | |
429 | internal_relocs | |
45d6a902 AM |
430 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, |
431 | (Elf_Internal_Rela *) NULL, | |
432 | info->keep_memory); | |
3a65329d SC |
433 | if (internal_relocs == NULL) |
434 | goto error_ret_free_local; | |
435 | ||
436 | /* Now examine each relocation. */ | |
437 | irela = internal_relocs; | |
438 | irelaend = irela + section->reloc_count; | |
439 | for (; irela < irelaend; irela++) | |
440 | { | |
441 | unsigned int r_type, r_indx; | |
442 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
443 | asection *sym_sec; | |
444 | bfd_vma sym_value; | |
445 | struct elf_link_hash_entry *hash; | |
446 | const char *stub_name; | |
447 | Elf_Internal_Sym *sym; | |
448 | ||
449 | r_type = ELF32_R_TYPE (irela->r_info); | |
450 | ||
451 | /* Only look at 16-bit relocs. */ | |
452 | if (r_type != (unsigned int) R_M68HC11_16) | |
453 | continue; | |
454 | ||
455 | /* Now determine the call target, its name, value, | |
456 | section. */ | |
457 | r_indx = ELF32_R_SYM (irela->r_info); | |
458 | if (r_indx < symtab_hdr->sh_info) | |
459 | { | |
460 | /* It's a local symbol. */ | |
461 | Elf_Internal_Shdr *hdr; | |
462 | bfd_boolean is_far; | |
463 | ||
464 | sym = local_syms + r_indx; | |
3a65329d SC |
465 | is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); |
466 | if (!is_far) | |
467 | continue; | |
7f888330 | 468 | |
4fbb74a6 AM |
469 | if (sym->st_shndx >= elf_numsections (input_bfd)) |
470 | sym_sec = NULL; | |
471 | else | |
472 | { | |
473 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
474 | sym_sec = hdr->bfd_section; | |
475 | } | |
3a65329d SC |
476 | stub_name = (bfd_elf_string_from_elf_section |
477 | (input_bfd, symtab_hdr->sh_link, | |
478 | sym->st_name)); | |
479 | sym_value = sym->st_value; | |
480 | hash = NULL; | |
481 | } | |
482 | else | |
483 | { | |
484 | /* It's an external symbol. */ | |
485 | int e_indx; | |
486 | ||
487 | e_indx = r_indx - symtab_hdr->sh_info; | |
488 | hash = (struct elf_link_hash_entry *) | |
489 | (sym_hashes[e_indx]); | |
490 | ||
491 | while (hash->root.type == bfd_link_hash_indirect | |
492 | || hash->root.type == bfd_link_hash_warning) | |
493 | hash = ((struct elf_link_hash_entry *) | |
494 | hash->root.u.i.link); | |
495 | ||
496 | if (hash->root.type == bfd_link_hash_defined | |
83774818 SC |
497 | || hash->root.type == bfd_link_hash_defweak |
498 | || hash->root.type == bfd_link_hash_new) | |
3a65329d SC |
499 | { |
500 | if (!(hash->other & STO_M68HC12_FAR)) | |
501 | continue; | |
502 | } | |
503 | else if (hash->root.type == bfd_link_hash_undefweak) | |
504 | { | |
505 | continue; | |
506 | } | |
507 | else if (hash->root.type == bfd_link_hash_undefined) | |
508 | { | |
509 | continue; | |
510 | } | |
511 | else | |
512 | { | |
513 | bfd_set_error (bfd_error_bad_value); | |
514 | goto error_ret_free_internal; | |
515 | } | |
516 | sym_sec = hash->root.u.def.section; | |
517 | sym_value = hash->root.u.def.value; | |
518 | stub_name = hash->root.root.string; | |
519 | } | |
520 | ||
521 | if (!stub_name) | |
522 | goto error_ret_free_internal; | |
523 | ||
524 | stub_entry = m68hc12_stub_hash_lookup | |
525 | (htab->stub_hash_table, | |
526 | stub_name, | |
527 | FALSE, FALSE); | |
528 | if (stub_entry == NULL) | |
529 | { | |
530 | if (add_stub_section == 0) | |
531 | continue; | |
532 | ||
533 | stub_entry = m68hc12_add_stub (stub_name, section, htab); | |
534 | if (stub_entry == NULL) | |
535 | { | |
536 | error_ret_free_internal: | |
537 | if (elf_section_data (section)->relocs == NULL) | |
538 | free (internal_relocs); | |
539 | goto error_ret_free_local; | |
540 | } | |
541 | } | |
542 | ||
543 | stub_entry->target_value = sym_value; | |
544 | stub_entry->target_section = sym_sec; | |
545 | } | |
546 | ||
547 | /* We're done with the internal relocs, free them. */ | |
548 | if (elf_section_data (section)->relocs == NULL) | |
549 | free (internal_relocs); | |
550 | } | |
551 | } | |
552 | ||
553 | if (add_stub_section) | |
554 | { | |
555 | /* OK, we've added some stubs. Find out the new size of the | |
556 | stub sections. */ | |
557 | for (stub_sec = htab->stub_bfd->sections; | |
558 | stub_sec != NULL; | |
559 | stub_sec = stub_sec->next) | |
560 | { | |
eea6121a | 561 | stub_sec->size = 0; |
3a65329d SC |
562 | } |
563 | ||
564 | bfd_hash_traverse (htab->stub_hash_table, htab->size_one_stub, htab); | |
565 | } | |
2a0e29b4 | 566 | free (all_local_syms); |
3a65329d SC |
567 | return TRUE; |
568 | ||
569 | error_ret_free_local: | |
2a0e29b4 | 570 | free (all_local_syms); |
3a65329d SC |
571 | return FALSE; |
572 | } | |
573 | ||
574 | /* Export the trampoline addresses in the symbol table. */ | |
575 | static bfd_boolean | |
0a6a3ebe | 576 | m68hc11_elf_export_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
3a65329d SC |
577 | { |
578 | struct bfd_link_info *info; | |
579 | struct m68hc11_elf_link_hash_table *htab; | |
580 | struct elf32_m68hc11_stub_hash_entry *stub_entry; | |
581 | char* name; | |
582 | bfd_boolean result; | |
583 | ||
584 | info = (struct bfd_link_info *) in_arg; | |
585 | htab = m68hc11_elf_hash_table (info); | |
4dfe6ac6 NC |
586 | if (htab == NULL) |
587 | return FALSE; | |
3a65329d SC |
588 | |
589 | /* Massage our args to the form they really have. */ | |
590 | stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry; | |
591 | ||
592 | /* Generate the trampoline according to HC11 or HC12. */ | |
593 | result = (* htab->build_one_stub) (gen_entry, in_arg); | |
594 | ||
595 | /* Make a printable name that does not conflict with the real function. */ | |
e1fa0163 | 596 | name = concat ("tramp.", stub_entry->root.string, NULL); |
3a65329d SC |
597 | |
598 | /* Export the symbol for debugging/disassembling. */ | |
599 | m68hc11_elf_set_symbol (htab->stub_bfd, info, name, | |
600 | stub_entry->stub_offset, | |
601 | stub_entry->stub_sec); | |
e1fa0163 | 602 | free (name); |
3a65329d SC |
603 | return result; |
604 | } | |
605 | ||
606 | /* Export a symbol or set its value and section. */ | |
607 | static void | |
0a6a3ebe SC |
608 | m68hc11_elf_set_symbol (bfd *abfd, struct bfd_link_info *info, |
609 | const char *name, bfd_vma value, asection *sec) | |
3a65329d SC |
610 | { |
611 | struct elf_link_hash_entry *h; | |
612 | ||
613 | h = (struct elf_link_hash_entry *) | |
614 | bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, FALSE); | |
615 | if (h == NULL) | |
616 | { | |
617 | _bfd_generic_link_add_one_symbol (info, abfd, | |
618 | name, | |
619 | BSF_GLOBAL, | |
620 | sec, | |
621 | value, | |
622 | (const char*) NULL, | |
623 | TRUE, FALSE, NULL); | |
624 | } | |
625 | else | |
626 | { | |
627 | h->root.type = bfd_link_hash_defined; | |
628 | h->root.u.def.value = value; | |
629 | h->root.u.def.section = sec; | |
630 | } | |
631 | } | |
632 | ||
633 | ||
634 | /* Build all the stubs associated with the current output file. The | |
635 | stubs are kept in a hash table attached to the main linker hash | |
636 | table. This function is called via m68hc12elf_finish in the | |
637 | linker. */ | |
638 | ||
639 | bfd_boolean | |
0a6a3ebe | 640 | elf32_m68hc11_build_stubs (bfd *abfd, struct bfd_link_info *info) |
3a65329d SC |
641 | { |
642 | asection *stub_sec; | |
643 | struct bfd_hash_table *table; | |
644 | struct m68hc11_elf_link_hash_table *htab; | |
645 | struct m68hc11_scan_param param; | |
646 | ||
647 | m68hc11_elf_get_bank_parameters (info); | |
648 | htab = m68hc11_elf_hash_table (info); | |
4dfe6ac6 NC |
649 | if (htab == NULL) |
650 | return FALSE; | |
3a65329d SC |
651 | |
652 | for (stub_sec = htab->stub_bfd->sections; | |
653 | stub_sec != NULL; | |
654 | stub_sec = stub_sec->next) | |
655 | { | |
656 | bfd_size_type size; | |
657 | ||
658 | /* Allocate memory to hold the linker stubs. */ | |
eea6121a | 659 | size = stub_sec->size; |
3a65329d SC |
660 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); |
661 | if (stub_sec->contents == NULL && size != 0) | |
662 | return FALSE; | |
eea6121a | 663 | stub_sec->size = 0; |
3a65329d SC |
664 | } |
665 | ||
666 | /* Build the stubs as directed by the stub hash table. */ | |
667 | table = htab->stub_hash_table; | |
668 | bfd_hash_traverse (table, m68hc11_elf_export_one_stub, info); | |
68ffbac6 | 669 | |
3a65329d SC |
670 | /* Scan the output sections to see if we use the memory banks. |
671 | If so, export the symbols that define how the memory banks | |
672 | are mapped. This is used by gdb and the simulator to obtain | |
673 | the information. It can be used by programs to burn the eprom | |
674 | at the good addresses. */ | |
675 | param.use_memory_banks = FALSE; | |
676 | param.pinfo = &htab->pinfo; | |
677 | bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); | |
678 | if (param.use_memory_banks) | |
679 | { | |
680 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_START_NAME, | |
681 | htab->pinfo.bank_physical, | |
682 | bfd_abs_section_ptr); | |
683 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_VIRTUAL_NAME, | |
684 | htab->pinfo.bank_virtual, | |
685 | bfd_abs_section_ptr); | |
686 | m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_SIZE_NAME, | |
687 | htab->pinfo.bank_size, | |
688 | bfd_abs_section_ptr); | |
689 | } | |
690 | ||
691 | return TRUE; | |
692 | } | |
693 | ||
694 | void | |
0a6a3ebe | 695 | m68hc11_elf_get_bank_parameters (struct bfd_link_info *info) |
3a65329d SC |
696 | { |
697 | unsigned i; | |
698 | struct m68hc11_page_info *pinfo; | |
699 | struct bfd_link_hash_entry *h; | |
4dfe6ac6 NC |
700 | struct m68hc11_elf_link_hash_table *htab; |
701 | ||
702 | htab = m68hc11_elf_hash_table (info); | |
703 | if (htab == NULL) | |
704 | return; | |
3a65329d | 705 | |
4dfe6ac6 | 706 | pinfo = & htab->pinfo; |
3a65329d SC |
707 | if (pinfo->bank_param_initialized) |
708 | return; | |
709 | ||
710 | pinfo->bank_virtual = M68HC12_BANK_VIRT; | |
711 | pinfo->bank_mask = M68HC12_BANK_MASK; | |
712 | pinfo->bank_physical = M68HC12_BANK_BASE; | |
713 | pinfo->bank_shift = M68HC12_BANK_SHIFT; | |
714 | pinfo->bank_size = 1 << M68HC12_BANK_SHIFT; | |
715 | ||
716 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_START_NAME, | |
717 | FALSE, FALSE, TRUE); | |
718 | if (h != (struct bfd_link_hash_entry*) NULL | |
719 | && h->type == bfd_link_hash_defined) | |
720 | pinfo->bank_physical = (h->u.def.value | |
721 | + h->u.def.section->output_section->vma | |
722 | + h->u.def.section->output_offset); | |
723 | ||
724 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_VIRTUAL_NAME, | |
725 | FALSE, FALSE, TRUE); | |
726 | if (h != (struct bfd_link_hash_entry*) NULL | |
727 | && h->type == bfd_link_hash_defined) | |
728 | pinfo->bank_virtual = (h->u.def.value | |
729 | + h->u.def.section->output_section->vma | |
730 | + h->u.def.section->output_offset); | |
731 | ||
732 | h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_SIZE_NAME, | |
733 | FALSE, FALSE, TRUE); | |
734 | if (h != (struct bfd_link_hash_entry*) NULL | |
735 | && h->type == bfd_link_hash_defined) | |
736 | pinfo->bank_size = (h->u.def.value | |
737 | + h->u.def.section->output_section->vma | |
738 | + h->u.def.section->output_offset); | |
739 | ||
740 | pinfo->bank_shift = 0; | |
741 | for (i = pinfo->bank_size; i != 0; i >>= 1) | |
742 | pinfo->bank_shift++; | |
743 | pinfo->bank_shift--; | |
744 | pinfo->bank_mask = (1 << pinfo->bank_shift) - 1; | |
745 | pinfo->bank_physical_end = pinfo->bank_physical + pinfo->bank_size; | |
746 | pinfo->bank_param_initialized = 1; | |
747 | ||
748 | h = bfd_link_hash_lookup (info->hash, "__far_trampoline", FALSE, | |
749 | FALSE, TRUE); | |
750 | if (h != (struct bfd_link_hash_entry*) NULL | |
751 | && h->type == bfd_link_hash_defined) | |
752 | pinfo->trampoline_addr = (h->u.def.value | |
753 | + h->u.def.section->output_section->vma | |
754 | + h->u.def.section->output_offset); | |
755 | } | |
756 | ||
757 | /* Return 1 if the address is in banked memory. | |
758 | This can be applied to a virtual address and to a physical address. */ | |
759 | int | |
0a6a3ebe | 760 | m68hc11_addr_is_banked (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
761 | { |
762 | if (addr >= pinfo->bank_virtual) | |
763 | return 1; | |
764 | ||
765 | if (addr >= pinfo->bank_physical && addr <= pinfo->bank_physical_end) | |
766 | return 1; | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | /* Return the physical address seen by the processor, taking | |
772 | into account banked memory. */ | |
773 | bfd_vma | |
0a6a3ebe | 774 | m68hc11_phys_addr (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
775 | { |
776 | if (addr < pinfo->bank_virtual) | |
777 | return addr; | |
778 | ||
779 | /* Map the address to the memory bank. */ | |
780 | addr -= pinfo->bank_virtual; | |
781 | addr &= pinfo->bank_mask; | |
782 | addr += pinfo->bank_physical; | |
783 | return addr; | |
784 | } | |
785 | ||
786 | /* Return the page number corresponding to an address in banked memory. */ | |
787 | bfd_vma | |
0a6a3ebe | 788 | m68hc11_phys_page (struct m68hc11_page_info *pinfo, bfd_vma addr) |
3a65329d SC |
789 | { |
790 | if (addr < pinfo->bank_virtual) | |
791 | return 0; | |
792 | ||
793 | /* Map the address to the memory bank. */ | |
794 | addr -= pinfo->bank_virtual; | |
795 | addr >>= pinfo->bank_shift; | |
796 | addr &= 0x0ff; | |
797 | return addr; | |
798 | } | |
799 | ||
800 | /* This function is used for relocs which are only used for relaxing, | |
801 | which the linker should otherwise ignore. */ | |
802 | ||
803 | bfd_reloc_status_type | |
0a6a3ebe SC |
804 | m68hc11_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
805 | arelent *reloc_entry, | |
806 | asymbol *symbol ATTRIBUTE_UNUSED, | |
807 | void *data ATTRIBUTE_UNUSED, | |
808 | asection *input_section, | |
809 | bfd *output_bfd, | |
810 | char **error_message ATTRIBUTE_UNUSED) | |
3a65329d SC |
811 | { |
812 | if (output_bfd != NULL) | |
813 | reloc_entry->address += input_section->output_offset; | |
814 | return bfd_reloc_ok; | |
815 | } | |
816 | ||
817 | bfd_reloc_status_type | |
0a6a3ebe SC |
818 | m68hc11_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
819 | arelent *reloc_entry, | |
820 | asymbol *symbol, | |
821 | void *data ATTRIBUTE_UNUSED, | |
822 | asection *input_section, | |
823 | bfd *output_bfd, | |
824 | char **error_message ATTRIBUTE_UNUSED) | |
3a65329d SC |
825 | { |
826 | if (output_bfd != (bfd *) NULL | |
827 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
828 | && (! reloc_entry->howto->partial_inplace | |
829 | || reloc_entry->addend == 0)) | |
830 | { | |
831 | reloc_entry->address += input_section->output_offset; | |
832 | return bfd_reloc_ok; | |
833 | } | |
834 | ||
835 | if (output_bfd != NULL) | |
836 | return bfd_reloc_continue; | |
837 | ||
07515404 | 838 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
3a65329d SC |
839 | return bfd_reloc_outofrange; |
840 | ||
841 | abort(); | |
842 | } | |
843 | ||
3a65329d SC |
844 | /* Look through the relocs for a section during the first phase. |
845 | Since we don't do .gots or .plts, we just need to consider the | |
846 | virtual table relocs for gc. */ | |
847 | ||
848 | bfd_boolean | |
0a6a3ebe SC |
849 | elf32_m68hc11_check_relocs (bfd *abfd, struct bfd_link_info *info, |
850 | asection *sec, const Elf_Internal_Rela *relocs) | |
3a65329d SC |
851 | { |
852 | Elf_Internal_Shdr * symtab_hdr; | |
853 | struct elf_link_hash_entry ** sym_hashes; | |
3a65329d SC |
854 | const Elf_Internal_Rela * rel; |
855 | const Elf_Internal_Rela * rel_end; | |
856 | ||
0e1862bb | 857 | if (bfd_link_relocatable (info)) |
3a65329d SC |
858 | return TRUE; |
859 | ||
860 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; | |
861 | sym_hashes = elf_sym_hashes (abfd); | |
3a65329d SC |
862 | rel_end = relocs + sec->reloc_count; |
863 | ||
864 | for (rel = relocs; rel < rel_end; rel++) | |
865 | { | |
866 | struct elf_link_hash_entry * h; | |
867 | unsigned long r_symndx; | |
868 | ||
869 | r_symndx = ELF32_R_SYM (rel->r_info); | |
870 | ||
871 | if (r_symndx < symtab_hdr->sh_info) | |
872 | h = NULL; | |
873 | else | |
973a3492 L |
874 | { |
875 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
876 | while (h->root.type == bfd_link_hash_indirect | |
877 | || h->root.type == bfd_link_hash_warning) | |
878 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
879 | |
880 | /* PR15323, ref flags aren't set for references in the same | |
881 | object. */ | |
bc4e12de | 882 | h->root.non_ir_ref_regular = 1; |
973a3492 | 883 | } |
3a65329d SC |
884 | |
885 | switch (ELF32_R_TYPE (rel->r_info)) | |
886 | { | |
887 | /* This relocation describes the C++ object vtable hierarchy. | |
888 | Reconstruct it for later use during GC. */ | |
889 | case R_M68HC11_GNU_VTINHERIT: | |
c152c796 | 890 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
3a65329d SC |
891 | return FALSE; |
892 | break; | |
893 | ||
894 | /* This relocation describes which C++ vtable entries are actually | |
895 | used. Record for later use during GC. */ | |
896 | case R_M68HC11_GNU_VTENTRY: | |
d17e0c6e JB |
897 | BFD_ASSERT (h != NULL); |
898 | if (h != NULL | |
899 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
3a65329d SC |
900 | return FALSE; |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
905 | return TRUE; | |
906 | } | |
907 | ||
3a65329d SC |
908 | /* Relocate a 68hc11/68hc12 ELF section. */ |
909 | bfd_boolean | |
0a6a3ebe SC |
910 | elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
911 | struct bfd_link_info *info, | |
912 | bfd *input_bfd, asection *input_section, | |
913 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
914 | Elf_Internal_Sym *local_syms, | |
915 | asection **local_sections) | |
3a65329d SC |
916 | { |
917 | Elf_Internal_Shdr *symtab_hdr; | |
918 | struct elf_link_hash_entry **sym_hashes; | |
919 | Elf_Internal_Rela *rel, *relend; | |
9b69b847 | 920 | const char *name = NULL; |
3a65329d | 921 | struct m68hc11_page_info *pinfo; |
9c5bfbb7 | 922 | const struct elf_backend_data * const ebd = get_elf_backend_data (input_bfd); |
4dfe6ac6 | 923 | struct m68hc11_elf_link_hash_table *htab; |
9a92d0ce | 924 | unsigned long e_flags; |
3a65329d SC |
925 | |
926 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
927 | sym_hashes = elf_sym_hashes (input_bfd); | |
9a92d0ce | 928 | e_flags = elf_elfheader (input_bfd)->e_flags; |
3a65329d | 929 | |
4dfe6ac6 NC |
930 | htab = m68hc11_elf_hash_table (info); |
931 | if (htab == NULL) | |
932 | return FALSE; | |
933 | ||
3a65329d SC |
934 | /* Get memory bank parameters. */ |
935 | m68hc11_elf_get_bank_parameters (info); | |
3a65329d | 936 | |
4dfe6ac6 | 937 | pinfo = & htab->pinfo; |
3a65329d SC |
938 | rel = relocs; |
939 | relend = relocs + input_section->reloc_count; | |
4dfe6ac6 | 940 | |
3a65329d SC |
941 | for (; rel < relend; rel++) |
942 | { | |
943 | int r_type; | |
944 | arelent arel; | |
945 | reloc_howto_type *howto; | |
946 | unsigned long r_symndx; | |
947 | Elf_Internal_Sym *sym; | |
948 | asection *sec; | |
9b69b847 | 949 | bfd_vma relocation = 0; |
3a65329d SC |
950 | bfd_reloc_status_type r = bfd_reloc_undefined; |
951 | bfd_vma phys_page; | |
952 | bfd_vma phys_addr; | |
953 | bfd_vma insn_addr; | |
954 | bfd_vma insn_page; | |
9b69b847 | 955 | bfd_boolean is_far = FALSE; |
082d1122 NC |
956 | bfd_boolean is_xgate_symbol = FALSE; |
957 | bfd_boolean is_section_symbol = FALSE; | |
ab96bf03 | 958 | struct elf_link_hash_entry *h; |
6927f982 | 959 | bfd_vma val; |
e1fa0163 NC |
960 | const char * msg; |
961 | char * buf; | |
3a65329d SC |
962 | |
963 | r_symndx = ELF32_R_SYM (rel->r_info); | |
964 | r_type = ELF32_R_TYPE (rel->r_info); | |
965 | ||
966 | if (r_type == R_M68HC11_GNU_VTENTRY | |
082d1122 | 967 | || r_type == R_M68HC11_GNU_VTINHERIT) |
3a65329d SC |
968 | continue; |
969 | ||
ab96bf03 AM |
970 | (*ebd->elf_info_to_howto_rel) (input_bfd, &arel, rel); |
971 | howto = arel.howto; | |
972 | ||
973 | h = NULL; | |
974 | sym = NULL; | |
975 | sec = NULL; | |
976 | if (r_symndx < symtab_hdr->sh_info) | |
977 | { | |
978 | sym = local_syms + r_symndx; | |
979 | sec = local_sections[r_symndx]; | |
980 | relocation = (sec->output_section->vma | |
981 | + sec->output_offset | |
982 | + sym->st_value); | |
983 | is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); | |
082d1122 NC |
984 | is_xgate_symbol = (sym && (sym->st_target_internal)); |
985 | is_section_symbol = ELF_ST_TYPE (sym->st_info) & STT_SECTION; | |
ab96bf03 AM |
986 | } |
987 | else | |
988 | { | |
62d887d4 | 989 | bfd_boolean unresolved_reloc, warned, ignored; |
ab96bf03 AM |
990 | |
991 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
992 | r_symndx, symtab_hdr, sym_hashes, | |
993 | h, sec, relocation, unresolved_reloc, | |
62d887d4 | 994 | warned, ignored); |
ab96bf03 AM |
995 | |
996 | is_far = (h && (h->other & STO_M68HC12_FAR)); | |
082d1122 | 997 | is_xgate_symbol = (h && (h->target_internal)); |
ab96bf03 AM |
998 | } |
999 | ||
dbaa2011 | 1000 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1001 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1002 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 1003 | |
0e1862bb | 1004 | if (bfd_link_relocatable (info)) |
3a65329d | 1005 | { |
1049f94e | 1006 | /* This is a relocatable link. We don't have to change |
3a65329d SC |
1007 | anything, unless the reloc is against a section symbol, |
1008 | in which case we have to adjust according to where the | |
1009 | section symbol winds up in the output section. */ | |
ab96bf03 AM |
1010 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
1011 | rel->r_addend += sec->output_offset; | |
3a65329d SC |
1012 | continue; |
1013 | } | |
3a65329d | 1014 | |
ab96bf03 AM |
1015 | if (h != NULL) |
1016 | name = h->root.root.string; | |
1017 | else | |
1018 | { | |
1019 | name = (bfd_elf_string_from_elf_section | |
1020 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1021 | if (name == NULL || *name == '\0') | |
1022 | name = bfd_section_name (input_bfd, sec); | |
1023 | } | |
1024 | ||
1025 | if (is_far && ELF32_R_TYPE (rel->r_info) == R_M68HC11_16) | |
1026 | { | |
1027 | struct elf32_m68hc11_stub_hash_entry* stub; | |
ab96bf03 | 1028 | |
ab96bf03 AM |
1029 | stub = m68hc12_stub_hash_lookup (htab->stub_hash_table, |
1030 | name, FALSE, FALSE); | |
1031 | if (stub) | |
1032 | { | |
1033 | relocation = stub->stub_offset | |
1034 | + stub->stub_sec->output_section->vma | |
1035 | + stub->stub_sec->output_offset; | |
1036 | is_far = FALSE; | |
1037 | } | |
1038 | } | |
3a65329d SC |
1039 | |
1040 | /* Do the memory bank mapping. */ | |
1041 | phys_addr = m68hc11_phys_addr (pinfo, relocation + rel->r_addend); | |
1042 | phys_page = m68hc11_phys_page (pinfo, relocation + rel->r_addend); | |
1043 | switch (r_type) | |
1044 | { | |
6927f982 NC |
1045 | case R_M68HC12_LO8XG: |
1046 | /* This relocation is specific to XGATE IMM16 calls and will precede | |
1047 | a HI8. tc-m68hc11 only generates them in pairs. | |
1048 | Leave the relocation to the HI8XG step. */ | |
1049 | r = bfd_reloc_ok; | |
1050 | r_type = R_M68HC11_NONE; | |
1051 | break; | |
1052 | ||
1053 | case R_M68HC12_HI8XG: | |
1054 | /* This relocation is specific to XGATE IMM16 calls and must follow | |
1055 | a LO8XG. Does not actually check that it was a LO8XG. | |
1056 | Adjusts high and low bytes. */ | |
1057 | relocation = phys_addr; | |
9a92d0ce | 1058 | if ((e_flags & E_M68HC11_XGATE_RAMOFFSET) |
6927f982 NC |
1059 | && (relocation >= 0x2000)) |
1060 | relocation += 0xc000; /* HARDCODED RAM offset for XGATE. */ | |
1061 | ||
1062 | /* Fetch 16 bit value including low byte in previous insn. */ | |
1063 | val = (bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset) << 8) | |
1064 | | bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset - 2); | |
1065 | ||
1066 | /* Add on value to preserve carry, then write zero to high byte. */ | |
1067 | relocation += val; | |
1068 | ||
1069 | /* Write out top byte. */ | |
1070 | bfd_put_8 (input_bfd, (relocation >> 8) & 0xff, | |
1071 | (bfd_byte*) contents + rel->r_offset); | |
1072 | ||
1073 | /* Write out low byte to previous instruction. */ | |
1074 | bfd_put_8 (input_bfd, relocation & 0xff, | |
1075 | (bfd_byte*) contents + rel->r_offset - 2); | |
1076 | ||
1077 | /* Mark as relocation completed. */ | |
1078 | r = bfd_reloc_ok; | |
1079 | r_type = R_M68HC11_NONE; | |
1080 | break; | |
1081 | ||
1082 | /* The HI8 and LO8 relocs are generated by %hi(expr) %lo(expr) | |
1083 | assembler directives. %hi does not support carry. */ | |
1084 | case R_M68HC11_HI8: | |
1085 | case R_M68HC11_LO8: | |
1086 | relocation = phys_addr; | |
1087 | break; | |
1088 | ||
3a65329d SC |
1089 | case R_M68HC11_24: |
1090 | /* Reloc used by 68HC12 call instruction. */ | |
1091 | bfd_put_16 (input_bfd, phys_addr, | |
1092 | (bfd_byte*) contents + rel->r_offset); | |
1093 | bfd_put_8 (input_bfd, phys_page, | |
1094 | (bfd_byte*) contents + rel->r_offset + 2); | |
1095 | r = bfd_reloc_ok; | |
1096 | r_type = R_M68HC11_NONE; | |
1097 | break; | |
1098 | ||
1099 | case R_M68HC11_NONE: | |
1100 | r = bfd_reloc_ok; | |
1101 | break; | |
1102 | ||
1103 | case R_M68HC11_LO16: | |
1104 | /* Reloc generated by %addr(expr) gas to obtain the | |
1105 | address as mapped in the memory bank window. */ | |
1106 | relocation = phys_addr; | |
1107 | break; | |
1108 | ||
1109 | case R_M68HC11_PAGE: | |
1110 | /* Reloc generated by %page(expr) gas to obtain the | |
1111 | page number associated with the address. */ | |
1112 | relocation = phys_page; | |
1113 | break; | |
1114 | ||
1115 | case R_M68HC11_16: | |
1116 | /* Get virtual address of instruction having the relocation. */ | |
1117 | if (is_far) | |
1118 | { | |
3a65329d SC |
1119 | msg = _("Reference to the far symbol `%s' using a wrong " |
1120 | "relocation may result in incorrect execution"); | |
e1fa0163 | 1121 | buf = xmalloc (strlen (msg) + strlen (name) + 10); |
3a65329d | 1122 | sprintf (buf, msg, name); |
68ffbac6 | 1123 | |
1a72702b AM |
1124 | (*info->callbacks->warning) |
1125 | (info, buf, name, input_bfd, NULL, rel->r_offset); | |
e1fa0163 | 1126 | free (buf); |
3a65329d SC |
1127 | } |
1128 | ||
1129 | /* Get virtual address of instruction having the relocation. */ | |
1130 | insn_addr = input_section->output_section->vma | |
1131 | + input_section->output_offset | |
1132 | + rel->r_offset; | |
1133 | ||
1134 | insn_page = m68hc11_phys_page (pinfo, insn_addr); | |
1135 | ||
082d1122 NC |
1136 | /* If we are linking an S12 instruction against an XGATE symbol, we |
1137 | need to change the offset of the symbol value so that it's correct | |
1138 | from the S12's perspective. */ | |
1139 | if (is_xgate_symbol) | |
1140 | { | |
1141 | /* The ram in the global space is mapped to 0x2000 in the 16-bit | |
1142 | address space for S12 and 0xE000 in the 16-bit address space | |
1143 | for XGATE. */ | |
1144 | if (relocation >= 0xE000) | |
1145 | { | |
1146 | /* We offset the address by the difference | |
1147 | between these two mappings. */ | |
1148 | relocation -= 0xC000; | |
1149 | break; | |
1150 | } | |
1151 | else | |
1152 | { | |
082d1122 NC |
1153 | msg = _("XGATE address (%lx) is not within shared RAM" |
1154 | "(0xE000-0xFFFF), therefore you must manually offset " | |
1155 | "the address, and possibly manage the page, in your " | |
1156 | "code."); | |
e1fa0163 | 1157 | buf = xmalloc (strlen (msg) + 128); |
082d1122 | 1158 | sprintf (buf, msg, phys_addr); |
1a72702b AM |
1159 | (*info->callbacks->warning) (info, buf, name, input_bfd, |
1160 | input_section, insn_addr); | |
e1fa0163 | 1161 | free (buf); |
082d1122 NC |
1162 | break; |
1163 | } | |
1164 | } | |
1165 | ||
3a65329d SC |
1166 | if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend) |
1167 | && m68hc11_addr_is_banked (pinfo, insn_addr) | |
9a92d0ce | 1168 | && phys_page != insn_page && !(e_flags & E_M68HC11_NO_BANK_WARNING)) |
3a65329d | 1169 | { |
695344c0 | 1170 | /* xgettext:c-format */ |
3a65329d SC |
1171 | msg = _("banked address [%lx:%04lx] (%lx) is not in the same bank " |
1172 | "as current banked address [%lx:%04lx] (%lx)"); | |
e1fa0163 | 1173 | buf = xmalloc (strlen (msg) + 128); |
3a65329d SC |
1174 | sprintf (buf, msg, phys_page, phys_addr, |
1175 | (long) (relocation + rel->r_addend), | |
1176 | insn_page, m68hc11_phys_addr (pinfo, insn_addr), | |
1177 | (long) (insn_addr)); | |
1a72702b AM |
1178 | (*info->callbacks->warning) (info, buf, name, input_bfd, |
1179 | input_section, rel->r_offset); | |
e1fa0163 | 1180 | free (buf); |
3a65329d SC |
1181 | break; |
1182 | } | |
082d1122 | 1183 | |
3a65329d SC |
1184 | if (phys_page != 0 && insn_page == 0) |
1185 | { | |
695344c0 | 1186 | /* xgettext:c-format */ |
3a65329d SC |
1187 | msg = _("reference to a banked address [%lx:%04lx] in the " |
1188 | "normal address space at %04lx"); | |
e1fa0163 | 1189 | buf = xmalloc (strlen (msg) + 128); |
3a65329d | 1190 | sprintf (buf, msg, phys_page, phys_addr, insn_addr); |
1a72702b AM |
1191 | (*info->callbacks->warning) (info, buf, name, input_bfd, |
1192 | input_section, insn_addr); | |
e1fa0163 | 1193 | free (buf); |
3a65329d SC |
1194 | relocation = phys_addr; |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | /* If this is a banked address use the phys_addr so that | |
1199 | we stay in the banked window. */ | |
1200 | if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend)) | |
1201 | relocation = phys_addr; | |
1202 | break; | |
1203 | } | |
6927f982 | 1204 | |
082d1122 NC |
1205 | /* If we are linking an XGATE instruction against an S12 symbol, we |
1206 | need to change the offset of the symbol value so that it's correct | |
1207 | from the XGATE's perspective. */ | |
1208 | if (!strcmp (howto->name, "R_XGATE_IMM8_LO") | |
1209 | || !strcmp (howto->name, "R_XGATE_IMM8_HI")) | |
1210 | { | |
1211 | /* We can only offset S12 addresses that lie within the non-paged | |
1212 | area of RAM. */ | |
1213 | if (!is_xgate_symbol && !is_section_symbol) | |
1214 | { | |
1215 | /* The ram in the global space is mapped to 0x2000 and stops at | |
1216 | 0x4000 in the 16-bit address space for S12 and 0xE000 in the | |
1217 | 16-bit address space for XGATE. */ | |
1218 | if (relocation >= 0x2000 && relocation < 0x4000) | |
1219 | /* We offset the address by the difference | |
1220 | between these two mappings. */ | |
1221 | relocation += 0xC000; | |
1222 | else | |
1223 | { | |
082d1122 NC |
1224 | /* Get virtual address of instruction having the relocation. */ |
1225 | insn_addr = input_section->output_section->vma | |
1226 | + input_section->output_offset + rel->r_offset; | |
1227 | ||
1228 | msg = _("S12 address (%lx) is not within shared RAM" | |
1229 | "(0x2000-0x4000), therefore you must manually " | |
1230 | "offset the address in your code"); | |
e1fa0163 | 1231 | buf = xmalloc (strlen (msg) + 128); |
082d1122 | 1232 | sprintf (buf, msg, phys_addr); |
1a72702b AM |
1233 | (*info->callbacks->warning) (info, buf, name, input_bfd, |
1234 | input_section, insn_addr); | |
e1fa0163 | 1235 | free (buf); |
082d1122 NC |
1236 | break; |
1237 | } | |
1238 | } | |
1239 | } | |
1240 | ||
3a65329d | 1241 | if (r_type != R_M68HC11_NONE) |
6927f982 NC |
1242 | { |
1243 | if ((r_type == R_M68HC12_PCREL_9) || (r_type == R_M68HC12_PCREL_10)) | |
1244 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3a65329d | 1245 | contents, rel->r_offset, |
6927f982 NC |
1246 | relocation - 2, rel->r_addend); |
1247 | else | |
1248 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1249 | contents, rel->r_offset, | |
1250 | relocation, rel->r_addend); | |
1251 | } | |
3a65329d SC |
1252 | |
1253 | if (r != bfd_reloc_ok) | |
1254 | { | |
3a65329d SC |
1255 | switch (r) |
1256 | { | |
1257 | case bfd_reloc_overflow: | |
1a72702b AM |
1258 | (*info->callbacks->reloc_overflow) |
1259 | (info, NULL, name, howto->name, (bfd_vma) 0, | |
1260 | input_bfd, input_section, rel->r_offset); | |
3a65329d SC |
1261 | break; |
1262 | ||
1263 | case bfd_reloc_undefined: | |
1a72702b AM |
1264 | (*info->callbacks->undefined_symbol) |
1265 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
3a65329d SC |
1266 | break; |
1267 | ||
1268 | case bfd_reloc_outofrange: | |
1269 | msg = _ ("internal error: out of range error"); | |
1270 | goto common_error; | |
1271 | ||
1272 | case bfd_reloc_notsupported: | |
1273 | msg = _ ("internal error: unsupported relocation error"); | |
1274 | goto common_error; | |
1275 | ||
1276 | case bfd_reloc_dangerous: | |
1277 | msg = _ ("internal error: dangerous error"); | |
1278 | goto common_error; | |
1279 | ||
1280 | default: | |
1281 | msg = _ ("internal error: unknown error"); | |
1282 | /* fall through */ | |
1283 | ||
1284 | common_error: | |
1a72702b AM |
1285 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
1286 | input_section, rel->r_offset); | |
3a65329d SC |
1287 | break; |
1288 | } | |
1289 | } | |
1290 | } | |
1291 | ||
1292 | return TRUE; | |
1293 | } | |
1294 | ||
1295 | ||
1296 | \f | |
1297 | /* Set and control ELF flags in ELF header. */ | |
1298 | ||
1299 | bfd_boolean | |
0a6a3ebe | 1300 | _bfd_m68hc11_elf_set_private_flags (bfd *abfd, flagword flags) |
3a65329d SC |
1301 | { |
1302 | BFD_ASSERT (!elf_flags_init (abfd) | |
1303 | || elf_elfheader (abfd)->e_flags == flags); | |
1304 | ||
1305 | elf_elfheader (abfd)->e_flags = flags; | |
1306 | elf_flags_init (abfd) = TRUE; | |
1307 | return TRUE; | |
1308 | } | |
1309 | ||
1310 | /* Merge backend specific data from an object file to the output | |
1311 | object file when linking. */ | |
1312 | ||
1313 | bfd_boolean | |
50e03d47 | 1314 | _bfd_m68hc11_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
3a65329d | 1315 | { |
50e03d47 | 1316 | bfd *obfd = info->output_bfd; |
3a65329d SC |
1317 | flagword old_flags; |
1318 | flagword new_flags; | |
1319 | bfd_boolean ok = TRUE; | |
1320 | ||
cc643b88 | 1321 | /* Check if we have the same endianness */ |
50e03d47 | 1322 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
3a65329d SC |
1323 | return FALSE; |
1324 | ||
1325 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1326 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1327 | return TRUE; | |
1328 | ||
1329 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1330 | elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI; | |
1331 | old_flags = elf_elfheader (obfd)->e_flags; | |
1332 | ||
1333 | if (! elf_flags_init (obfd)) | |
1334 | { | |
1335 | elf_flags_init (obfd) = TRUE; | |
1336 | elf_elfheader (obfd)->e_flags = new_flags; | |
1337 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
1338 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
1339 | ||
1340 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1341 | && bfd_get_arch_info (obfd)->the_default) | |
1342 | { | |
1343 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
1344 | bfd_get_mach (ibfd))) | |
1345 | return FALSE; | |
1346 | } | |
1347 | ||
1348 | return TRUE; | |
1349 | } | |
1350 | ||
1351 | /* Check ABI compatibility. */ | |
1352 | if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32)) | |
1353 | { | |
4eca0228 | 1354 | _bfd_error_handler |
d003868e AM |
1355 | (_("%B: linking files compiled for 16-bit integers (-mshort) " |
1356 | "and others for 32-bit integers"), ibfd); | |
3a65329d SC |
1357 | ok = FALSE; |
1358 | } | |
1359 | if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64)) | |
1360 | { | |
4eca0228 | 1361 | _bfd_error_handler |
d003868e AM |
1362 | (_("%B: linking files compiled for 32-bit double (-fshort-double) " |
1363 | "and others for 64-bit double"), ibfd); | |
3a65329d SC |
1364 | ok = FALSE; |
1365 | } | |
47247ced SC |
1366 | |
1367 | /* Processor compatibility. */ | |
1368 | if (!EF_M68HC11_CAN_MERGE_MACH (new_flags, old_flags)) | |
1369 | { | |
4eca0228 | 1370 | _bfd_error_handler |
d003868e AM |
1371 | (_("%B: linking files compiled for HCS12 with " |
1372 | "others compiled for HC12"), ibfd); | |
47247ced SC |
1373 | ok = FALSE; |
1374 | } | |
1375 | new_flags = ((new_flags & ~EF_M68HC11_MACH_MASK) | |
1376 | | (EF_M68HC11_MERGE_MACH (new_flags, old_flags))); | |
1377 | ||
1378 | elf_elfheader (obfd)->e_flags = new_flags; | |
1379 | ||
17e58af0 SC |
1380 | new_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); |
1381 | old_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); | |
3a65329d SC |
1382 | |
1383 | /* Warn about any other mismatches */ | |
1384 | if (new_flags != old_flags) | |
1385 | { | |
4eca0228 | 1386 | _bfd_error_handler |
695344c0 | 1387 | /* xgettext:c-format */ |
d42c267e AM |
1388 | (_("%B: uses different e_flags (%#x) fields than previous modules (%#x)"), |
1389 | ibfd, new_flags, old_flags); | |
3a65329d SC |
1390 | ok = FALSE; |
1391 | } | |
1392 | ||
1393 | if (! ok) | |
1394 | { | |
1395 | bfd_set_error (bfd_error_bad_value); | |
1396 | return FALSE; | |
1397 | } | |
1398 | ||
1399 | return TRUE; | |
1400 | } | |
1401 | ||
1402 | bfd_boolean | |
0a6a3ebe | 1403 | _bfd_m68hc11_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
3a65329d SC |
1404 | { |
1405 | FILE *file = (FILE *) ptr; | |
1406 | ||
1407 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1408 | ||
1409 | /* Print normal ELF private data. */ | |
1410 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1411 | ||
1412 | /* xgettext:c-format */ | |
1413 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1414 | ||
1415 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32) | |
1416 | fprintf (file, _("[abi=32-bit int, ")); | |
1417 | else | |
1418 | fprintf (file, _("[abi=16-bit int, ")); | |
1419 | ||
1420 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64) | |
1421 | fprintf (file, _("64-bit double, ")); | |
1422 | else | |
1423 | fprintf (file, _("32-bit double, ")); | |
1424 | ||
1425 | if (strcmp (bfd_get_target (abfd), "elf32-m68hc11") == 0) | |
1426 | fprintf (file, _("cpu=HC11]")); | |
1427 | else if (elf_elfheader (abfd)->e_flags & EF_M68HCS12_MACH) | |
1428 | fprintf (file, _("cpu=HCS12]")); | |
1429 | else | |
68ffbac6 | 1430 | fprintf (file, _("cpu=HC12]")); |
3a65329d SC |
1431 | |
1432 | if (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS) | |
1433 | fprintf (file, _(" [memory=bank-model]")); | |
1434 | else | |
1435 | fprintf (file, _(" [memory=flat]")); | |
1436 | ||
6927f982 NC |
1437 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_XGATE_RAMOFFSET) |
1438 | fprintf (file, _(" [XGATE RAM offsetting]")); | |
1439 | ||
3a65329d SC |
1440 | fputc ('\n', file); |
1441 | ||
1442 | return TRUE; | |
1443 | } | |
1444 | ||
0a6a3ebe SC |
1445 | static void scan_sections_for_abi (bfd *abfd ATTRIBUTE_UNUSED, |
1446 | asection *asect, void *arg) | |
3a65329d SC |
1447 | { |
1448 | struct m68hc11_scan_param* p = (struct m68hc11_scan_param*) arg; | |
1449 | ||
1450 | if (asect->vma >= p->pinfo->bank_virtual) | |
1451 | p->use_memory_banks = TRUE; | |
1452 | } | |
68ffbac6 | 1453 | |
3a65329d SC |
1454 | /* Tweak the OSABI field of the elf header. */ |
1455 | ||
1456 | void | |
0a6a3ebe | 1457 | elf32_m68hc11_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) |
3a65329d SC |
1458 | { |
1459 | struct m68hc11_scan_param param; | |
4dfe6ac6 NC |
1460 | struct m68hc11_elf_link_hash_table *htab; |
1461 | ||
1462 | if (link_info == NULL) | |
1463 | return; | |
3a65329d | 1464 | |
4dfe6ac6 NC |
1465 | htab = m68hc11_elf_hash_table (link_info); |
1466 | if (htab == NULL) | |
3a65329d SC |
1467 | return; |
1468 | ||
1469 | m68hc11_elf_get_bank_parameters (link_info); | |
1470 | ||
1471 | param.use_memory_banks = FALSE; | |
4dfe6ac6 NC |
1472 | param.pinfo = & htab->pinfo; |
1473 | ||
3a65329d | 1474 | bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); |
4dfe6ac6 | 1475 | |
3a65329d SC |
1476 | if (param.use_memory_banks) |
1477 | { | |
1478 | Elf_Internal_Ehdr * i_ehdrp; | |
1479 | ||
1480 | i_ehdrp = elf_elfheader (abfd); | |
1481 | i_ehdrp->e_flags |= E_M68HC12_BANKS; | |
1482 | } | |
1483 | } |