1 /* Test plugin for the GNU linker.
2 Copyright (C) 2010-2024 Free Software Foundation, Inc.
3
4 This file is part of the GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #if BFD_SUPPORTS_PLUGINS
24 #include "plugin-api.h"
25 /* For ARRAY_SIZE macro only - we don't link the library itself. */
26 #include "libiberty.h"
27
28 #include <ctype.h> /* For isdigit. */
29
30 extern enum ld_plugin_status onload (struct ld_plugin_tv *tv);
31 static enum ld_plugin_status onclaim_file (const struct ld_plugin_input_file *file,
32 int *claimed);
33 static enum ld_plugin_status onall_symbols_read (void);
34 static enum ld_plugin_status oncleanup (void);
35
36 /* Helper for calling plugin api message function. */
37 #define TV_MESSAGE if (tv_message) (*tv_message)
38
39 /* Struct for recording files to claim / files claimed. */
40 typedef struct claim_file
41 {
42 struct claim_file *next;
43 struct ld_plugin_input_file file;
44 bool claimed;
45 struct ld_plugin_symbol *symbols;
46 int n_syms_allocated;
47 int n_syms_used;
48 } claim_file_t;
49
50 /* Types of things that can be added at all symbols read time. */
51 typedef enum addfile_enum
52 {
53 ADD_FILE,
54 ADD_LIB,
55 ADD_DIR
56 } addfile_enum_t;
57
58 /* Struct for recording files to add to final link. */
59 typedef struct add_file
60 {
61 struct add_file *next;
62 const char *name;
63 addfile_enum_t type;
64 } add_file_t;
65
66 /* Helper macro for defining array of transfer vector tags and names. */
67 #define ADDENTRY(tag) { tag, #tag }
68
69 /* Struct for looking up human-readable versions of tag names. */
70 typedef struct tag_name
71 {
72 enum ld_plugin_tag tag;
73 const char *name;
74 } tag_name_t;
75
76 /* Array of all known tags and their names. */
77 static const tag_name_t tag_names[] =
78 {
79 ADDENTRY(LDPT_NULL),
80 ADDENTRY(LDPT_API_VERSION),
81 ADDENTRY(LDPT_GOLD_VERSION),
82 ADDENTRY(LDPT_LINKER_OUTPUT),
83 ADDENTRY(LDPT_OPTION),
84 ADDENTRY(LDPT_REGISTER_CLAIM_FILE_HOOK),
85 ADDENTRY(LDPT_REGISTER_CLAIM_FILE_HOOK_V2),
86 ADDENTRY(LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK),
87 ADDENTRY(LDPT_REGISTER_CLEANUP_HOOK),
88 ADDENTRY(LDPT_ADD_SYMBOLS),
89 ADDENTRY(LDPT_GET_SYMBOLS),
90 ADDENTRY(LDPT_GET_SYMBOLS_V2),
91 ADDENTRY(LDPT_ADD_INPUT_FILE),
92 ADDENTRY(LDPT_MESSAGE),
93 ADDENTRY(LDPT_GET_INPUT_FILE),
94 ADDENTRY(LDPT_GET_VIEW),
95 ADDENTRY(LDPT_RELEASE_INPUT_FILE),
96 ADDENTRY(LDPT_ADD_INPUT_LIBRARY),
97 ADDENTRY(LDPT_OUTPUT_NAME),
98 ADDENTRY(LDPT_SET_EXTRA_LIBRARY_PATH),
99 ADDENTRY(LDPT_GNU_LD_VERSION)
100 };
101
102 /* Function pointers to cache hooks passed at onload time. */
103 static ld_plugin_register_claim_file tv_register_claim_file = 0;
104 static ld_plugin_register_claim_file_v2 tv_register_claim_file_v2 = 0;
105 static ld_plugin_register_all_symbols_read tv_register_all_symbols_read = 0;
106 static ld_plugin_register_cleanup tv_register_cleanup = 0;
107 static ld_plugin_add_symbols tv_add_symbols = 0;
108 static ld_plugin_get_symbols tv_get_symbols = 0;
109 static ld_plugin_get_symbols tv_get_symbols_v2 = 0;
110 static ld_plugin_add_input_file tv_add_input_file = 0;
111 static ld_plugin_message tv_message = 0;
112 static ld_plugin_get_input_file tv_get_input_file = 0;
113 static ld_plugin_get_view tv_get_view = 0;
114 static ld_plugin_release_input_file tv_release_input_file = 0;
115 static ld_plugin_add_input_library tv_add_input_library = 0;
116 static ld_plugin_set_extra_library_path tv_set_extra_library_path = 0;
117
118 /* Other cached info from the transfer vector. */
119 static enum ld_plugin_output_file_type linker_output;
120 static const char *output_name;
121
122 /* Behaviour control flags set by plugin options. */
123 static enum ld_plugin_status onload_ret = LDPS_OK;
124 static enum ld_plugin_status claim_file_ret = LDPS_OK;
125 static enum ld_plugin_status all_symbols_read_ret = LDPS_OK;
126 static enum ld_plugin_status cleanup_ret = LDPS_OK;
127 static bool register_claimfile_hook = false;
128 static bool register_allsymbolsread_hook = false;
129 static bool register_cleanup_hook = false;
130 static bool dumpresolutions = false;
131
132 /* The master list of all claimable/claimed files. */
133 static claim_file_t *claimfiles_list = NULL;
134
135 /* We keep a tail pointer for easy linking on the end. */
136 static claim_file_t **claimfiles_tail_chain_ptr = &claimfiles_list;
137
138 /* The last claimed file added to the list, for receiving syms. */
139 static claim_file_t *last_claimfile = NULL;
140
141 /* The master list of all files to add to the final link. */
142 static add_file_t *addfiles_list = NULL;
143
144 /* We keep a tail pointer for easy linking on the end. */
145 static add_file_t **addfiles_tail_chain_ptr = &addfiles_list;
146
147 /* Number of bytes read in claim file before deciding if the file can be
148 claimed. */
149 static int bytes_to_read_before_claim = 0;
150
151 /* Add a new claimfile on the end of the chain. */
152 static enum ld_plugin_status
record_claim_file(const char * file)153 record_claim_file (const char *file)
154 {
155 claim_file_t *newfile;
156
157 newfile = malloc (sizeof *newfile);
158 if (!newfile)
159 return LDPS_ERR;
160 memset (newfile, 0, sizeof *newfile);
161 /* Only setup for now is remembering the name to look for. */
162 newfile->file.name = file;
163 /* Chain it on the end of the list. */
164 *claimfiles_tail_chain_ptr = newfile;
165 claimfiles_tail_chain_ptr = &newfile->next;
166 /* Record it as active for receiving symbols to register. */
167 last_claimfile = newfile;
168 return LDPS_OK;
169 }
170
171 /* How many bytes to read before claiming (or not) an input file. */
172 static enum ld_plugin_status
record_read_length(const char * length)173 record_read_length (const char *length)
174 {
175 const char *tmp;
176
177 tmp = length;
178 while (*tmp != '\0' && isdigit (*tmp))
179 ++tmp;
180 if (*tmp != '\0' || *length == '\0')
181 return LDPS_ERR;
182
183 bytes_to_read_before_claim = atoi (length);
184 return LDPS_OK;
185 }
186
187 /* Add a new addfile on the end of the chain. */
188 static enum ld_plugin_status
record_add_file(const char * file,addfile_enum_t type)189 record_add_file (const char *file, addfile_enum_t type)
190 {
191 add_file_t *newfile;
192
193 newfile = malloc (sizeof *newfile);
194 if (!newfile)
195 return LDPS_ERR;
196 newfile->next = NULL;
197 newfile->name = file;
198 newfile->type = type;
199 /* Chain it on the end of the list. */
200 *addfiles_tail_chain_ptr = newfile;
201 addfiles_tail_chain_ptr = &newfile->next;
202 return LDPS_OK;
203 }
204
205 /* Parse a command-line argument string into a symbol definition.
206 Symbol-strings follow the colon-separated format:
207 NAME:VERSION:def:vis:size:COMDATKEY
208 where the fields in capitals are strings and those in lower
209 case are integers. We don't allow to specify a resolution as
210 doing so is not meaningful when calling the add symbols hook. */
211 static enum ld_plugin_status
parse_symdefstr(const char * str,struct ld_plugin_symbol * sym)212 parse_symdefstr (const char *str, struct ld_plugin_symbol *sym)
213 {
214 int n;
215 long long size;
216 const char *colon1, *colon2, *colon5;
217
218 /* Locate the colons separating the first two strings. */
219 colon1 = strchr (str, ':');
220 if (!colon1)
221 return LDPS_ERR;
222 colon2 = strchr (colon1+1, ':');
223 if (!colon2)
224 return LDPS_ERR;
225 /* Name must not be empty (version may be). */
226 if (colon1 == str)
227 return LDPS_ERR;
228
229 /* The fifth colon and trailing comdat key string are optional,
230 but the intermediate ones must all be present. */
231 colon5 = strchr (colon2+1, ':'); /* Actually only third so far. */
232 if (!colon5)
233 return LDPS_ERR;
234 colon5 = strchr (colon5+1, ':'); /* Hopefully fourth now. */
235 if (!colon5)
236 return LDPS_ERR;
237 colon5 = strchr (colon5+1, ':'); /* Optional fifth now. */
238
239 /* Finally we'll use sscanf to parse the numeric fields, then
240 we'll split out the strings which we need to allocate separate
241 storage for anyway so that we can add nul termination. */
242 n = sscanf (colon2 + 1, "%hhi:%i:%lli", &sym->def, &sym->visibility, &size);
243 if (n != 3)
244 return LDPS_ERR;
245
246 /* Parsed successfully, so allocate strings and fill out fields. */
247 sym->size = size;
248 sym->unused = 0;
249 sym->section_kind = 0;
250 sym->symbol_type = 0;
251 sym->resolution = LDPR_UNKNOWN;
252 sym->name = malloc (colon1 - str + 1);
253 if (!sym->name)
254 return LDPS_ERR;
255 memcpy (sym->name, str, colon1 - str);
256 sym->name[colon1 - str] = '\0';
257 if (colon2 > (colon1 + 1))
258 {
259 sym->version = malloc (colon2 - colon1);
260 if (!sym->version)
261 return LDPS_ERR;
262 memcpy (sym->version, colon1 + 1, colon2 - (colon1 + 1));
263 sym->version[colon2 - (colon1 + 1)] = '\0';
264 }
265 else
266 sym->version = NULL;
267 if (colon5 && colon5[1])
268 {
269 sym->comdat_key = malloc (strlen (colon5 + 1) + 1);
270 if (!sym->comdat_key)
271 return LDPS_ERR;
272 strcpy (sym->comdat_key, colon5 + 1);
273 }
274 else
275 sym->comdat_key = 0;
276 return LDPS_OK;
277 }
278
279 /* Record a symbol to be added for the last-added claimfile. */
280 static enum ld_plugin_status
record_claimed_file_symbol(const char * symdefstr)281 record_claimed_file_symbol (const char *symdefstr)
282 {
283 struct ld_plugin_symbol sym;
284
285 /* Can't add symbols except as belonging to claimed files. */
286 if (!last_claimfile)
287 return LDPS_ERR;
288
289 /* If string doesn't parse correctly, give an error. */
290 if (parse_symdefstr (symdefstr, &sym) != LDPS_OK)
291 return LDPS_ERR;
292
293 /* Check for enough space, resize array if needed, and add it. */
294 if (last_claimfile->n_syms_allocated == last_claimfile->n_syms_used)
295 {
296 int new_n_syms = last_claimfile->n_syms_allocated
297 ? 2 * last_claimfile->n_syms_allocated
298 : 10;
299 last_claimfile->symbols = realloc (last_claimfile->symbols,
300 new_n_syms * sizeof *last_claimfile->symbols);
301 if (!last_claimfile->symbols)
302 return LDPS_ERR;
303 last_claimfile->n_syms_allocated = new_n_syms;
304 }
305 last_claimfile->symbols[last_claimfile->n_syms_used++] = sym;
306
307 return LDPS_OK;
308 }
309
310 /* Records the status to return from one of the registered hooks. */
311 static enum ld_plugin_status
set_ret_val(const char * whichval,enum ld_plugin_status retval)312 set_ret_val (const char *whichval, enum ld_plugin_status retval)
313 {
314 if (!strcmp ("onload", whichval))
315 onload_ret = retval;
316 else if (!strcmp ("claimfile", whichval))
317 claim_file_ret = retval;
318 else if (!strcmp ("allsymbolsread", whichval))
319 all_symbols_read_ret = retval;
320 else if (!strcmp ("cleanup", whichval))
321 cleanup_ret = retval;
322 else
323 return LDPS_ERR;
324 return LDPS_OK;
325 }
326
327 /* Records hooks which should be registered. */
328 static enum ld_plugin_status
set_register_hook(const char * whichhook,bool yesno)329 set_register_hook (const char *whichhook, bool yesno)
330 {
331 if (!strcmp ("claimfile", whichhook))
332 register_claimfile_hook = yesno;
333 else if (!strcmp ("allsymbolsread", whichhook))
334 register_allsymbolsread_hook = yesno;
335 else if (!strcmp ("cleanup", whichhook))
336 register_cleanup_hook = yesno;
337 else
338 return LDPS_ERR;
339 return LDPS_OK;
340 }
341
342 /* Determine type of plugin option and pass to individual parsers. */
343 static enum ld_plugin_status
parse_option(const char * opt)344 parse_option (const char *opt)
345 {
346 if (!strncmp ("fail", opt, 4))
347 return set_ret_val (opt + 4, LDPS_ERR);
348 else if (!strncmp ("pass", opt, 4))
349 return set_ret_val (opt + 4, LDPS_OK);
350 else if (!strncmp ("register", opt, 8))
351 return set_register_hook (opt + 8, true);
352 else if (!strncmp ("noregister", opt, 10))
353 return set_register_hook (opt + 10, false);
354 else if (!strncmp ("claim:", opt, 6))
355 return record_claim_file (opt + 6);
356 else if (!strncmp ("read:", opt, 5))
357 return record_read_length (opt + 5);
358 else if (!strncmp ("sym:", opt, 4))
359 return record_claimed_file_symbol (opt + 4);
360 else if (!strncmp ("add:", opt, 4))
361 return record_add_file (opt + 4, ADD_FILE);
362 else if (!strncmp ("lib:", opt, 4))
363 return record_add_file (opt + 4, ADD_LIB);
364 else if (!strncmp ("dir:", opt, 4))
365 return record_add_file (opt + 4, ADD_DIR);
366 else if (!strcmp ("dumpresolutions", opt))
367 dumpresolutions = true;
368 else
369 return LDPS_ERR;
370 return LDPS_OK;
371 }
372
373 /* Output contents of transfer vector array entry in human-readable form. */
374 static void
dump_tv_tag(size_t n,struct ld_plugin_tv * tv)375 dump_tv_tag (size_t n, struct ld_plugin_tv *tv)
376 {
377 size_t tag;
378 char unknownbuf[40];
379 const char *name;
380
381 for (tag = 0; tag < ARRAY_SIZE (tag_names); tag++)
382 if (tag_names[tag].tag == tv->tv_tag)
383 break;
384 sprintf (unknownbuf, "unknown tag #%d", tv->tv_tag);
385 name = (tag < ARRAY_SIZE (tag_names)) ? tag_names[tag].name : unknownbuf;
386 switch (tv->tv_tag)
387 {
388 case LDPT_OPTION:
389 case LDPT_OUTPUT_NAME:
390 TV_MESSAGE (LDPL_INFO, "tv[%d]: %s '%s'", n, name,
391 tv->tv_u.tv_string);
392 break;
393 case LDPT_REGISTER_CLAIM_FILE_HOOK:
394 case LDPT_REGISTER_CLAIM_FILE_HOOK_V2:
395 case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
396 case LDPT_REGISTER_CLEANUP_HOOK:
397 case LDPT_ADD_SYMBOLS:
398 case LDPT_GET_SYMBOLS:
399 case LDPT_GET_SYMBOLS_V2:
400 case LDPT_ADD_INPUT_FILE:
401 case LDPT_MESSAGE:
402 case LDPT_GET_INPUT_FILE:
403 case LDPT_GET_VIEW:
404 case LDPT_RELEASE_INPUT_FILE:
405 case LDPT_ADD_INPUT_LIBRARY:
406 case LDPT_SET_EXTRA_LIBRARY_PATH:
407 TV_MESSAGE (LDPL_INFO, "tv[%d]: %s func@0x%p", n, name,
408 (void *)(tv->tv_u.tv_message));
409 break;
410 case LDPT_NULL:
411 case LDPT_API_VERSION:
412 case LDPT_GOLD_VERSION:
413 case LDPT_LINKER_OUTPUT:
414 case LDPT_GNU_LD_VERSION:
415 default:
416 TV_MESSAGE (LDPL_INFO, "tv[%d]: %s value %W (%d)", n, name,
417 (bfd_vma)tv->tv_u.tv_val, tv->tv_u.tv_val);
418 break;
419 }
420 }
421
422 /* Handle/record information received in a transfer vector entry. */
423 static enum ld_plugin_status
parse_tv_tag(struct ld_plugin_tv * tv)424 parse_tv_tag (struct ld_plugin_tv *tv)
425 {
426 #define SETVAR(x) x = tv->tv_u.x
427 switch (tv->tv_tag)
428 {
429 case LDPT_OPTION:
430 return parse_option (tv->tv_u.tv_string);
431 case LDPT_NULL:
432 case LDPT_GOLD_VERSION:
433 case LDPT_GNU_LD_VERSION:
434 case LDPT_API_VERSION:
435 default:
436 break;
437 case LDPT_OUTPUT_NAME:
438 output_name = tv->tv_u.tv_string;
439 break;
440 case LDPT_LINKER_OUTPUT:
441 linker_output = tv->tv_u.tv_val;
442 break;
443 case LDPT_REGISTER_CLAIM_FILE_HOOK:
444 SETVAR(tv_register_claim_file);
445 break;
446 case LDPT_REGISTER_CLAIM_FILE_HOOK_V2:
447 SETVAR(tv_register_claim_file_v2);
448 break;
449 case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
450 SETVAR(tv_register_all_symbols_read);
451 break;
452 case LDPT_REGISTER_CLEANUP_HOOK:
453 SETVAR(tv_register_cleanup);
454 break;
455 case LDPT_ADD_SYMBOLS:
456 SETVAR(tv_add_symbols);
457 break;
458 case LDPT_GET_SYMBOLS:
459 SETVAR(tv_get_symbols);
460 break;
461 case LDPT_GET_SYMBOLS_V2:
462 tv_get_symbols_v2 = tv->tv_u.tv_get_symbols;
463 break;
464 case LDPT_ADD_INPUT_FILE:
465 SETVAR(tv_add_input_file);
466 break;
467 case LDPT_MESSAGE:
468 SETVAR(tv_message);
469 break;
470 case LDPT_GET_INPUT_FILE:
471 SETVAR(tv_get_input_file);
472 break;
473 case LDPT_GET_VIEW:
474 SETVAR(tv_get_view);
475 break;
476 case LDPT_RELEASE_INPUT_FILE:
477 SETVAR(tv_release_input_file);
478 break;
479 case LDPT_ADD_INPUT_LIBRARY:
480 SETVAR(tv_add_input_library);
481 break;
482 case LDPT_SET_EXTRA_LIBRARY_PATH:
483 SETVAR(tv_set_extra_library_path);
484 break;
485 }
486 #undef SETVAR
487 return LDPS_OK;
488 }
489
490 /* Record any useful information in transfer vector entry and display
491 it in human-readable form using the plugin API message() callback. */
492 enum ld_plugin_status
parse_and_dump_tv_tag(size_t n,struct ld_plugin_tv * tv)493 parse_and_dump_tv_tag (size_t n, struct ld_plugin_tv *tv)
494 {
495 enum ld_plugin_status rv = parse_tv_tag (tv);
496 dump_tv_tag (n, tv);
497 return rv;
498 }
499
500 /* Standard plugin API entry point. */
501 enum ld_plugin_status
onload(struct ld_plugin_tv * tv)502 onload (struct ld_plugin_tv *tv)
503 {
504 size_t n = 0;
505 enum ld_plugin_status rv;
506
507 /* This plugin does nothing but dump the tv array. It would
508 be an error if this function was called without one. */
509 if (!tv)
510 return LDPS_ERR;
511
512 /* First entry should always be LDPT_MESSAGE, letting us get
513 hold of it easily so we can send output straight away. */
514 if (tv[0].tv_tag == LDPT_MESSAGE)
515 tv_message = tv[0].tv_u.tv_message;
516
517 fflush (NULL);
518 TV_MESSAGE (LDPL_INFO, "Hello from testplugin.");
519
520 do
521 if ((rv = parse_and_dump_tv_tag (n++, tv)) != LDPS_OK)
522 return rv;
523 while ((tv++)->tv_tag != LDPT_NULL);
524
525 /* Register hooks only if instructed by options. */
526 if (register_claimfile_hook)
527 {
528 if (!tv_register_claim_file)
529 {
530 TV_MESSAGE (LDPL_FATAL, "No register_claim_file hook");
531 fflush (NULL);
532 return LDPS_ERR;
533 }
534 (*tv_register_claim_file) (onclaim_file);
535 }
536 if (register_allsymbolsread_hook)
537 {
538 if (!tv_register_all_symbols_read)
539 {
540 TV_MESSAGE (LDPL_FATAL, "No register_all_symbols_read hook");
541 fflush (NULL);
542 return LDPS_ERR;
543 }
544 (*tv_register_all_symbols_read) (onall_symbols_read);
545 }
546 if (register_cleanup_hook)
547 {
548 if (!tv_register_cleanup)
549 {
550 TV_MESSAGE (LDPL_FATAL, "No register_cleanup hook");
551 fflush (NULL);
552 return LDPS_ERR;
553 }
554 (*tv_register_cleanup) (oncleanup);
555 }
556 fflush (NULL);
557 return onload_ret;
558 }
559
560 /* Standard plugin API registerable hook. */
561 static enum ld_plugin_status
onclaim_file(const struct ld_plugin_input_file * file,int * claimed)562 onclaim_file (const struct ld_plugin_input_file *file, int *claimed)
563 {
564 /* Possible read of some bytes out of the input file into a buffer. This
565 simulates a plugin that reads some file content in order to decide if
566 the file should be claimed or not. */
567 if (bytes_to_read_before_claim > 0)
568 {
569 char *buffer = malloc (bytes_to_read_before_claim);
570
571 if (buffer == NULL)
572 return LDPS_ERR;
573 if (read (file->fd, buffer, bytes_to_read_before_claim) < 0)
574 return LDPS_ERR;
575 free (buffer);
576 }
577
578 /* Let's see if we want to claim this file. */
579 claim_file_t *claimfile = claimfiles_list;
580 while (claimfile)
581 {
582 if (!strcmp (file->name, claimfile->file.name))
583 break;
584 claimfile = claimfile->next;
585 }
586
587 /* Inform the user/testsuite. */
588 TV_MESSAGE (LDPL_INFO, "hook called: claim_file %s [@%ld/%ld] %s",
589 file->name, (long)file->offset, (long)file->filesize,
590 claimfile ? "CLAIMED" : "not claimed");
591 fflush (NULL);
592
593 /* If we decided to claim it, record that fact, and add any symbols
594 that were defined for it by plugin options. */
595 *claimed = (claimfile != 0);
596 if (claimfile)
597 {
598 claimfile->claimed = true;
599 claimfile->file = *file;
600 if (claimfile->n_syms_used && !tv_add_symbols)
601 return LDPS_ERR;
602 else if (claimfile->n_syms_used)
603 return (*tv_add_symbols) (claimfile->file.handle,
604 claimfile->n_syms_used, claimfile->symbols);
605 }
606
607 return claim_file_ret;
608 }
609
610 /* Standard plugin API registerable hook. */
611 static enum ld_plugin_status
onall_symbols_read(void)612 onall_symbols_read (void)
613 {
614 static const char *resolutions[] =
615 {
616 "LDPR_UNKNOWN",
617 "LDPR_UNDEF",
618 "LDPR_PREVAILING_DEF",
619 "LDPR_PREVAILING_DEF_IRONLY",
620 "LDPR_PREEMPTED_REG",
621 "LDPR_PREEMPTED_IR",
622 "LDPR_RESOLVED_IR",
623 "LDPR_RESOLVED_EXEC",
624 "LDPR_RESOLVED_DYN",
625 "LDPR_PREVAILING_DEF_IRONLY_EXP",
626 };
627 claim_file_t *claimfile = dumpresolutions ? claimfiles_list : NULL;
628 add_file_t *addfile = addfiles_list;
629 TV_MESSAGE (LDPL_INFO, "hook called: all symbols read.");
630 for ( ; claimfile; claimfile = claimfile->next)
631 {
632 enum ld_plugin_status rv;
633 int n;
634 if (claimfile->n_syms_used && !tv_get_symbols_v2)
635 return LDPS_ERR;
636 else if (!claimfile->n_syms_used)
637 continue;
638 rv = tv_get_symbols_v2 (claimfile->file.handle, claimfile->n_syms_used,
639 claimfile->symbols);
640 if (rv != LDPS_OK)
641 return rv;
642 for (n = 0; n < claimfile->n_syms_used; n++)
643 TV_MESSAGE (LDPL_INFO, "Sym: '%s%s%s' Resolution: %s",
644 claimfile->symbols[n].name,
645 claimfile->symbols[n].version ? "@" : "",
646 (claimfile->symbols[n].version
647 ? claimfile->symbols[n].version : ""),
648 resolutions[claimfile->symbols[n].resolution]);
649 }
650 for ( ; addfile ; addfile = addfile->next)
651 {
652 enum ld_plugin_status rv;
653 if (addfile->type == ADD_LIB && tv_add_input_library)
654 rv = (*tv_add_input_library) (addfile->name);
655 else if (addfile->type == ADD_FILE && tv_add_input_file)
656 rv = (*tv_add_input_file) (addfile->name);
657 else if (addfile->type == ADD_DIR && tv_set_extra_library_path)
658 rv = (*tv_set_extra_library_path) (addfile->name);
659 else
660 rv = LDPS_ERR;
661 if (rv != LDPS_OK)
662 return rv;
663 }
664 fflush (NULL);
665 return all_symbols_read_ret;
666 }
667
668 /* Standard plugin API registerable hook. */
669 static enum ld_plugin_status
oncleanup(void)670 oncleanup (void)
671 {
672 TV_MESSAGE (LDPL_INFO, "hook called: cleanup.");
673 fflush (NULL);
674 return cleanup_ret;
675 }
676 #endif /* BFD_SUPPORTS_PLUGINS */
677