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213516ef | 1 | /* Copyright (C) 2013-2023 Free Software Foundation, Inc. |
4d1eb6b4 JB |
2 | |
3 | This file is part of GDB. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include "defs.h" | |
19 | #include "solib-aix.h" | |
e26d0dab | 20 | #include "solib.h" |
4d1eb6b4 JB |
21 | #include "solist.h" |
22 | #include "inferior.h" | |
23 | #include "gdb_bfd.h" | |
24 | #include "gdbcore.h" | |
25 | #include "objfiles.h" | |
26 | #include "symtab.h" | |
27 | #include "xcoffread.h" | |
76727919 | 28 | #include "observable.h" |
4d1eb6b4 | 29 | #include "gdbcmd.h" |
268a13a5 | 30 | #include "gdbsupport/scope-exit.h" |
4d1eb6b4 | 31 | |
4d1eb6b4 JB |
32 | /* Our private data in struct so_list. */ |
33 | ||
d0e449a1 | 34 | struct lm_info_aix : public lm_info_base |
4d1eb6b4 JB |
35 | { |
36 | /* The name of the file mapped by the loader. Apart from the entry | |
37 | for the main executable, this is usually a shared library (which, | |
38 | on AIX, is an archive library file, created using the "ar" | |
39 | command). */ | |
6c401f72 | 40 | std::string filename; |
4d1eb6b4 JB |
41 | |
42 | /* The name of the shared object file with the actual dynamic | |
6c401f72 SM |
43 | loading dependency. This may be empty (Eg. main executable). */ |
44 | std::string member_name; | |
4d1eb6b4 JB |
45 | |
46 | /* The address in inferior memory where the text section got mapped. */ | |
6c401f72 | 47 | CORE_ADDR text_addr = 0; |
4d1eb6b4 JB |
48 | |
49 | /* The size of the text section, obtained via the loader data. */ | |
6c401f72 | 50 | ULONGEST text_size = 0; |
4d1eb6b4 JB |
51 | |
52 | /* The address in inferior memory where the data section got mapped. */ | |
6c401f72 | 53 | CORE_ADDR data_addr = 0; |
4d1eb6b4 JB |
54 | |
55 | /* The size of the data section, obtained via the loader data. */ | |
6c401f72 | 56 | ULONGEST data_size = 0; |
4d1eb6b4 JB |
57 | }; |
58 | ||
4d1eb6b4 JB |
59 | /* This module's per-inferior data. */ |
60 | ||
61 | struct solib_aix_inferior_data | |
62 | { | |
a269fbf1 | 63 | /* The list of shared libraries. |
4d1eb6b4 JB |
64 | |
65 | Note that the first element of this list is always the main | |
66 | executable, which is not technically a shared library. But | |
67 | we need that information to perform its relocation, and | |
68 | the same principles applied to shared libraries also apply | |
69 | to the main executable. So it's simpler to keep it as part | |
70 | of this list. */ | |
a269fbf1 | 71 | gdb::optional<std::vector<lm_info_aix>> library_list; |
4d1eb6b4 JB |
72 | }; |
73 | ||
74 | /* Key to our per-inferior data. */ | |
08b8a139 TT |
75 | static const registry<inferior>::key<solib_aix_inferior_data> |
76 | solib_aix_inferior_data_handle; | |
4d1eb6b4 JB |
77 | |
78 | /* Return this module's data for the given inferior. | |
79 | If none is found, add a zero'ed one now. */ | |
80 | ||
81 | static struct solib_aix_inferior_data * | |
82 | get_solib_aix_inferior_data (struct inferior *inf) | |
83 | { | |
84 | struct solib_aix_inferior_data *data; | |
85 | ||
a269fbf1 | 86 | data = solib_aix_inferior_data_handle.get (inf); |
4d1eb6b4 | 87 | if (data == NULL) |
a269fbf1 | 88 | data = solib_aix_inferior_data_handle.emplace (inf); |
4d1eb6b4 JB |
89 | |
90 | return data; | |
91 | } | |
92 | ||
93 | #if !defined(HAVE_LIBEXPAT) | |
94 | ||
95 | /* Dummy implementation if XML support is not compiled in. */ | |
96 | ||
a269fbf1 | 97 | static gdb::optional<std::vector<lm_info_aix>> |
4d1eb6b4 JB |
98 | solib_aix_parse_libraries (const char *library) |
99 | { | |
100 | static int have_warned; | |
101 | ||
102 | if (!have_warned) | |
103 | { | |
104 | have_warned = 1; | |
105 | warning (_("Can not parse XML library list; XML support was disabled " | |
dda83cd7 | 106 | "at compile time")); |
4d1eb6b4 JB |
107 | } |
108 | ||
a269fbf1 | 109 | return {}; |
814a3ff7 JB |
110 | } |
111 | ||
4d1eb6b4 JB |
112 | #else /* HAVE_LIBEXPAT */ |
113 | ||
114 | #include "xml-support.h" | |
115 | ||
116 | /* Handle the start of a <library> element. */ | |
117 | ||
118 | static void | |
119 | library_list_start_library (struct gdb_xml_parser *parser, | |
120 | const struct gdb_xml_element *element, | |
121 | void *user_data, | |
4d0fdd9b | 122 | std::vector<gdb_xml_value> &attributes) |
4d1eb6b4 | 123 | { |
a269fbf1 TT |
124 | std::vector<lm_info_aix> *list = (std::vector<lm_info_aix> *) user_data; |
125 | lm_info_aix item; | |
4d1eb6b4 JB |
126 | struct gdb_xml_value *attr; |
127 | ||
128 | attr = xml_find_attribute (attributes, "name"); | |
a269fbf1 | 129 | item.filename = (const char *) attr->value.get (); |
4d1eb6b4 JB |
130 | |
131 | attr = xml_find_attribute (attributes, "member"); | |
132 | if (attr != NULL) | |
a269fbf1 | 133 | item.member_name = (const char *) attr->value.get (); |
4d1eb6b4 JB |
134 | |
135 | attr = xml_find_attribute (attributes, "text_addr"); | |
a269fbf1 | 136 | item.text_addr = * (ULONGEST *) attr->value.get (); |
4d1eb6b4 JB |
137 | |
138 | attr = xml_find_attribute (attributes, "text_size"); | |
a269fbf1 | 139 | item.text_size = * (ULONGEST *) attr->value.get (); |
4d1eb6b4 JB |
140 | |
141 | attr = xml_find_attribute (attributes, "data_addr"); | |
a269fbf1 | 142 | item.data_addr = * (ULONGEST *) attr->value.get (); |
4d1eb6b4 JB |
143 | |
144 | attr = xml_find_attribute (attributes, "data_size"); | |
a269fbf1 | 145 | item.data_size = * (ULONGEST *) attr->value.get (); |
4d1eb6b4 | 146 | |
a269fbf1 | 147 | list->push_back (std::move (item)); |
4d1eb6b4 JB |
148 | } |
149 | ||
8c56e112 | 150 | /* Handle the start of a <library-list-aix> element. */ |
4d1eb6b4 JB |
151 | |
152 | static void | |
153 | library_list_start_list (struct gdb_xml_parser *parser, | |
dda83cd7 SM |
154 | const struct gdb_xml_element *element, |
155 | void *user_data, | |
4d0fdd9b | 156 | std::vector<gdb_xml_value> &attributes) |
4d1eb6b4 | 157 | { |
4d0fdd9b SM |
158 | char *version |
159 | = (char *) xml_find_attribute (attributes, "version")->value.get (); | |
4d1eb6b4 JB |
160 | |
161 | if (strcmp (version, "1.0") != 0) | |
162 | gdb_xml_error (parser, | |
dda83cd7 SM |
163 | _("Library list has unsupported version \"%s\""), |
164 | version); | |
4d1eb6b4 JB |
165 | } |
166 | ||
4d1eb6b4 | 167 | /* The allowed elements and attributes for an AIX library list |
8c56e112 | 168 | described in XML format. The root element is a <library-list-aix>. */ |
4d1eb6b4 JB |
169 | |
170 | static const struct gdb_xml_attribute library_attributes[] = | |
171 | { | |
172 | { "name", GDB_XML_AF_NONE, NULL, NULL }, | |
173 | { "member", GDB_XML_AF_OPTIONAL, NULL, NULL }, | |
174 | { "text_addr", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
175 | { "text_size", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
176 | { "data_addr", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
177 | { "data_size", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
178 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
179 | }; | |
180 | ||
181 | static const struct gdb_xml_element library_list_children[] = | |
182 | { | |
183 | { "library", library_attributes, NULL, | |
184 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
185 | library_list_start_library, NULL}, | |
186 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
187 | }; | |
188 | ||
189 | static const struct gdb_xml_attribute library_list_attributes[] = | |
190 | { | |
191 | { "version", GDB_XML_AF_NONE, NULL, NULL }, | |
192 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
193 | }; | |
194 | ||
195 | static const struct gdb_xml_element library_list_elements[] = | |
196 | { | |
8c56e112 | 197 | { "library-list-aix", library_list_attributes, library_list_children, |
4d1eb6b4 JB |
198 | GDB_XML_EF_NONE, library_list_start_list, NULL }, |
199 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
200 | }; | |
201 | ||
202 | /* Parse LIBRARY, a string containing the loader info in XML format, | |
a269fbf1 | 203 | and return a vector of lm_info_aix objects. |
4d1eb6b4 | 204 | |
a269fbf1 | 205 | Return an empty option if the parsing failed. */ |
4d1eb6b4 | 206 | |
a269fbf1 | 207 | static gdb::optional<std::vector<lm_info_aix>> |
4d1eb6b4 JB |
208 | solib_aix_parse_libraries (const char *library) |
209 | { | |
a269fbf1 | 210 | std::vector<lm_info_aix> result; |
4d1eb6b4 JB |
211 | |
212 | if (gdb_xml_parse_quick (_("aix library list"), "library-list-aix.dtd", | |
a269fbf1 TT |
213 | library_list_elements, library, &result) == 0) |
214 | return result; | |
4d1eb6b4 | 215 | |
a269fbf1 | 216 | return {}; |
4d1eb6b4 JB |
217 | } |
218 | ||
219 | #endif /* HAVE_LIBEXPAT */ | |
220 | ||
a269fbf1 TT |
221 | /* Return the loader info for the given inferior (INF), or an empty |
222 | option if the list could not be computed. | |
4d1eb6b4 JB |
223 | |
224 | Cache the result in per-inferior data, so as to avoid recomputing it | |
225 | each time this function is called. | |
226 | ||
227 | If an error occurs while computing this list, and WARNING_MSG | |
228 | is not NULL, then print a warning including WARNING_MSG and | |
229 | a description of the error. */ | |
230 | ||
a269fbf1 | 231 | static gdb::optional<std::vector<lm_info_aix>> & |
4d1eb6b4 JB |
232 | solib_aix_get_library_list (struct inferior *inf, const char *warning_msg) |
233 | { | |
234 | struct solib_aix_inferior_data *data; | |
4d1eb6b4 JB |
235 | |
236 | /* If already computed, return the cached value. */ | |
237 | data = get_solib_aix_inferior_data (inf); | |
a269fbf1 | 238 | if (data->library_list.has_value ()) |
4d1eb6b4 JB |
239 | return data->library_list; |
240 | ||
9018be22 | 241 | gdb::optional<gdb::char_vector> library_document |
328d42d8 SM |
242 | = target_read_stralloc (current_inferior ()->top_target (), |
243 | TARGET_OBJECT_LIBRARIES_AIX, | |
b7b030ad | 244 | NULL); |
9018be22 | 245 | if (!library_document && warning_msg != NULL) |
4d1eb6b4 | 246 | { |
ff99b71b | 247 | warning (_("%s (failed to read TARGET_OBJECT_LIBRARIES_AIX)"), |
4d1eb6b4 | 248 | warning_msg); |
a269fbf1 | 249 | return data->library_list; |
4d1eb6b4 | 250 | } |
4d1eb6b4 | 251 | |
e26d0dab SM |
252 | solib_debug_printf ("TARGET_OBJECT_LIBRARIES_AIX = %s", |
253 | library_document->data ()); | |
4d1eb6b4 | 254 | |
9018be22 | 255 | data->library_list = solib_aix_parse_libraries (library_document->data ()); |
a269fbf1 TT |
256 | if (!data->library_list.has_value () && warning_msg != NULL) |
257 | warning (_("%s (missing XML support?)"), warning_msg); | |
4d1eb6b4 | 258 | |
4d1eb6b4 JB |
259 | return data->library_list; |
260 | } | |
261 | ||
262 | /* If the .bss section's VMA is set to an address located before | |
263 | the end of the .data section, causing the two sections to overlap, | |
264 | return the overlap in bytes. Otherwise, return zero. | |
265 | ||
266 | Motivation: | |
267 | ||
268 | The GNU linker sometimes sets the start address of the .bss session | |
269 | before the end of the .data section, making the 2 sections overlap. | |
270 | The loader appears to handle this situation gracefully, by simply | |
271 | loading the bss section right after the end of the .data section. | |
272 | ||
273 | This means that the .data and the .bss sections are sometimes | |
274 | no longer relocated by the same amount. The problem is that | |
275 | the ldinfo data does not contain any information regarding | |
276 | the relocation of the .bss section, assuming that it would be | |
277 | identical to the information provided for the .data section | |
278 | (this is what would normally happen if the program was linked | |
279 | correctly). | |
280 | ||
281 | GDB therefore needs to detect those cases, and make the corresponding | |
282 | adjustment to the .bss section offset computed from the ldinfo data | |
283 | when necessary. This function returns the adjustment amount (or | |
284 | zero when no adjustment is needed). */ | |
285 | ||
286 | static CORE_ADDR | |
287 | solib_aix_bss_data_overlap (bfd *abfd) | |
288 | { | |
289 | struct bfd_section *data_sect, *bss_sect; | |
290 | ||
291 | data_sect = bfd_get_section_by_name (abfd, ".data"); | |
292 | if (data_sect == NULL) | |
293 | return 0; /* No overlap possible. */ | |
294 | ||
295 | bss_sect = bfd_get_section_by_name (abfd, ".bss"); | |
296 | if (bss_sect == NULL) | |
297 | return 0; /* No overlap possible. */ | |
298 | ||
299 | /* Assume the problem only occurs with linkers that place the .bss | |
300 | section after the .data section (the problem has only been | |
301 | observed when using the GNU linker, and the default linker | |
302 | script always places the .data and .bss sections in that order). */ | |
fd361982 | 303 | if (bfd_section_vma (bss_sect) < bfd_section_vma (data_sect)) |
4d1eb6b4 JB |
304 | return 0; |
305 | ||
fd361982 AM |
306 | if (bfd_section_vma (bss_sect) |
307 | < bfd_section_vma (data_sect) + bfd_section_size (data_sect)) | |
308 | return (bfd_section_vma (data_sect) + bfd_section_size (data_sect) | |
309 | - bfd_section_vma (bss_sect)); | |
4d1eb6b4 JB |
310 | |
311 | return 0; | |
312 | } | |
313 | ||
314 | /* Implement the "relocate_section_addresses" target_so_ops method. */ | |
315 | ||
316 | static void | |
317 | solib_aix_relocate_section_addresses (struct so_list *so, | |
318 | struct target_section *sec) | |
319 | { | |
4d1eb6b4 | 320 | struct bfd_section *bfd_sect = sec->the_bfd_section; |
57e6060e | 321 | bfd *abfd = bfd_sect->owner; |
fd361982 | 322 | const char *section_name = bfd_section_name (bfd_sect); |
d0e449a1 | 323 | lm_info_aix *info = (lm_info_aix *) so->lm_info; |
4d1eb6b4 JB |
324 | |
325 | if (strcmp (section_name, ".text") == 0) | |
326 | { | |
327 | sec->addr = info->text_addr; | |
328 | sec->endaddr = sec->addr + info->text_size; | |
329 | ||
330 | /* The text address given to us by the loader contains | |
331 | XCOFF headers, so we need to adjust by this much. */ | |
332 | sec->addr += bfd_sect->filepos; | |
333 | } | |
334 | else if (strcmp (section_name, ".data") == 0) | |
335 | { | |
336 | sec->addr = info->data_addr; | |
337 | sec->endaddr = sec->addr + info->data_size; | |
338 | } | |
339 | else if (strcmp (section_name, ".bss") == 0) | |
340 | { | |
060cfbef JB |
341 | /* The information provided by the loader does not include |
342 | the address of the .bss section, but we know that it gets | |
343 | relocated by the same offset as the .data section. So, | |
344 | compute the relocation offset for the .data section, and | |
345 | apply it to the .bss section as well. If the .data section | |
346 | is not defined (which seems highly unlikely), do our best | |
347 | by assuming no relocation. */ | |
348 | struct bfd_section *data_sect | |
349 | = bfd_get_section_by_name (abfd, ".data"); | |
350 | CORE_ADDR data_offset = 0; | |
351 | ||
352 | if (data_sect != NULL) | |
fd361982 | 353 | data_offset = info->data_addr - bfd_section_vma (data_sect); |
060cfbef | 354 | |
fd361982 | 355 | sec->addr = bfd_section_vma (bfd_sect) + data_offset; |
4d1eb6b4 | 356 | sec->addr += solib_aix_bss_data_overlap (abfd); |
fd361982 | 357 | sec->endaddr = sec->addr + bfd_section_size (bfd_sect); |
4d1eb6b4 JB |
358 | } |
359 | else | |
360 | { | |
361 | /* All other sections should not be relocated. */ | |
fd361982 AM |
362 | sec->addr = bfd_section_vma (bfd_sect); |
363 | sec->endaddr = sec->addr + bfd_section_size (bfd_sect); | |
4d1eb6b4 JB |
364 | } |
365 | } | |
366 | ||
367 | /* Implement the "free_so" target_so_ops method. */ | |
368 | ||
369 | static void | |
370 | solib_aix_free_so (struct so_list *so) | |
371 | { | |
6c401f72 SM |
372 | lm_info_aix *li = (lm_info_aix *) so->lm_info; |
373 | ||
e26d0dab | 374 | solib_debug_printf ("%s", so->so_name); |
6c401f72 SM |
375 | |
376 | delete li; | |
4d1eb6b4 JB |
377 | } |
378 | ||
379 | /* Implement the "clear_solib" target_so_ops method. */ | |
380 | ||
381 | static void | |
382 | solib_aix_clear_solib (void) | |
383 | { | |
384 | /* Nothing needed. */ | |
385 | } | |
386 | ||
387 | /* Compute and return the OBJFILE's section_offset array, using | |
6a053cb1 | 388 | the associated loader info (INFO). */ |
4d1eb6b4 | 389 | |
6a053cb1 | 390 | static section_offsets |
4d1eb6b4 | 391 | solib_aix_get_section_offsets (struct objfile *objfile, |
d0e449a1 | 392 | lm_info_aix *info) |
4d1eb6b4 | 393 | { |
98badbfd | 394 | bfd *abfd = objfile->obfd.get (); |
4d1eb6b4 | 395 | |
6a053cb1 | 396 | section_offsets offsets (objfile->section_offsets.size ()); |
4d1eb6b4 JB |
397 | |
398 | /* .text */ | |
399 | ||
400 | if (objfile->sect_index_text != -1) | |
401 | { | |
402 | struct bfd_section *sect | |
9ed8433a | 403 | = objfile->sections_start[objfile->sect_index_text].the_bfd_section; |
4d1eb6b4 | 404 | |
6a053cb1 | 405 | offsets[objfile->sect_index_text] |
fd361982 | 406 | = info->text_addr + sect->filepos - bfd_section_vma (sect); |
4d1eb6b4 JB |
407 | } |
408 | ||
409 | /* .data */ | |
410 | ||
411 | if (objfile->sect_index_data != -1) | |
412 | { | |
413 | struct bfd_section *sect | |
9ed8433a | 414 | = objfile->sections_start[objfile->sect_index_data].the_bfd_section; |
4d1eb6b4 | 415 | |
6a053cb1 | 416 | offsets[objfile->sect_index_data] |
fd361982 | 417 | = info->data_addr - bfd_section_vma (sect); |
4d1eb6b4 JB |
418 | } |
419 | ||
420 | /* .bss | |
421 | ||
422 | The offset of the .bss section should be identical to the offset | |
423 | of the .data section. If no .data section (which seems hard to | |
424 | believe it is possible), assume it is zero. */ | |
425 | ||
426 | if (objfile->sect_index_bss != -1 | |
427 | && objfile->sect_index_data != -1) | |
428 | { | |
6a053cb1 TT |
429 | offsets[objfile->sect_index_bss] |
430 | = (offsets[objfile->sect_index_data] | |
4d1eb6b4 JB |
431 | + solib_aix_bss_data_overlap (abfd)); |
432 | } | |
433 | ||
434 | /* All other sections should not need relocation. */ | |
435 | ||
436 | return offsets; | |
437 | } | |
438 | ||
439 | /* Implement the "solib_create_inferior_hook" target_so_ops method. */ | |
440 | ||
441 | static void | |
442 | solib_aix_solib_create_inferior_hook (int from_tty) | |
443 | { | |
444 | const char *warning_msg = "unable to relocate main executable"; | |
4d1eb6b4 JB |
445 | |
446 | /* We need to relocate the main executable... */ | |
447 | ||
a269fbf1 TT |
448 | gdb::optional<std::vector<lm_info_aix>> &library_list |
449 | = solib_aix_get_library_list (current_inferior (), warning_msg); | |
450 | if (!library_list.has_value ()) | |
4d1eb6b4 JB |
451 | return; /* Warning already printed. */ |
452 | ||
a269fbf1 | 453 | if (library_list->empty ()) |
4d1eb6b4 JB |
454 | { |
455 | warning (_("unable to relocate main executable (no info from loader)")); | |
456 | return; | |
457 | } | |
458 | ||
a269fbf1 | 459 | lm_info_aix &exec_info = (*library_list)[0]; |
a42d7dd8 | 460 | if (current_program_space->symfile_object_file != NULL) |
4d1eb6b4 | 461 | { |
a42d7dd8 TT |
462 | objfile *objf = current_program_space->symfile_object_file; |
463 | section_offsets offsets = solib_aix_get_section_offsets (objf, | |
464 | &exec_info); | |
4d1eb6b4 | 465 | |
a42d7dd8 | 466 | objfile_relocate (objf, offsets); |
4d1eb6b4 JB |
467 | } |
468 | } | |
469 | ||
4d1eb6b4 JB |
470 | /* Implement the "current_sos" target_so_ops method. */ |
471 | ||
472 | static struct so_list * | |
473 | solib_aix_current_sos (void) | |
474 | { | |
475 | struct so_list *start = NULL, *last = NULL; | |
4d1eb6b4 JB |
476 | int ix; |
477 | ||
a269fbf1 TT |
478 | gdb::optional<std::vector<lm_info_aix>> &library_list |
479 | = solib_aix_get_library_list (current_inferior (), NULL); | |
480 | if (!library_list.has_value ()) | |
4d1eb6b4 JB |
481 | return NULL; |
482 | ||
483 | /* Build a struct so_list for each entry on the list. | |
484 | We skip the first entry, since this is the entry corresponding | |
485 | to the main executable, not a shared library. */ | |
a269fbf1 | 486 | for (ix = 1; ix < library_list->size (); ix++) |
4d1eb6b4 | 487 | { |
41bf6aca | 488 | struct so_list *new_solib = XCNEW (struct so_list); |
6c401f72 | 489 | std::string so_name; |
4d1eb6b4 | 490 | |
a269fbf1 TT |
491 | lm_info_aix &info = (*library_list)[ix]; |
492 | if (info.member_name.empty ()) | |
4d1eb6b4 | 493 | { |
a269fbf1 | 494 | /* INFO.FILENAME is probably not an archive, but rather |
4d1eb6b4 JB |
495 | a shared object. Unusual, but it should be possible |
496 | to link a program against a shared object directory, | |
497 | without having to put it in an archive first. */ | |
a269fbf1 | 498 | so_name = info.filename; |
4d1eb6b4 JB |
499 | } |
500 | else | |
501 | { | |
502 | /* This is the usual case on AIX, where the shared object | |
503 | is a member of an archive. Create a synthetic so_name | |
504 | that follows the same convention as AIX's ldd tool | |
505 | (Eg: "/lib/libc.a(shr.o)"). */ | |
a269fbf1 TT |
506 | so_name = string_printf ("%s(%s)", info.filename.c_str (), |
507 | info.member_name.c_str ()); | |
4d1eb6b4 | 508 | } |
6c401f72 | 509 | strncpy (new_solib->so_original_name, so_name.c_str (), |
4d1eb6b4 JB |
510 | SO_NAME_MAX_PATH_SIZE - 1); |
511 | new_solib->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0'; | |
512 | memcpy (new_solib->so_name, new_solib->so_original_name, | |
513 | SO_NAME_MAX_PATH_SIZE); | |
a269fbf1 | 514 | new_solib->lm_info = new lm_info_aix (info); |
4d1eb6b4 JB |
515 | |
516 | /* Add it to the list. */ | |
517 | if (!start) | |
dda83cd7 | 518 | last = start = new_solib; |
4d1eb6b4 | 519 | else |
dda83cd7 SM |
520 | { |
521 | last->next = new_solib; | |
522 | last = new_solib; | |
523 | } | |
4d1eb6b4 JB |
524 | } |
525 | ||
526 | return start; | |
527 | } | |
528 | ||
529 | /* Implement the "open_symbol_file_object" target_so_ops method. */ | |
530 | ||
531 | static int | |
bf469271 | 532 | solib_aix_open_symbol_file_object (int from_tty) |
4d1eb6b4 JB |
533 | { |
534 | return 0; | |
535 | } | |
536 | ||
537 | /* Implement the "in_dynsym_resolve_code" target_so_ops method. */ | |
538 | ||
539 | static int | |
540 | solib_aix_in_dynsym_resolve_code (CORE_ADDR pc) | |
541 | { | |
542 | return 0; | |
543 | } | |
544 | ||
545 | /* Implement the "bfd_open" target_so_ops method. */ | |
546 | ||
192b62ce | 547 | static gdb_bfd_ref_ptr |
692d6f97 | 548 | solib_aix_bfd_open (const char *pathname) |
4d1eb6b4 JB |
549 | { |
550 | /* The pathname is actually a synthetic filename with the following | |
551 | form: "/path/to/sharedlib(member.o)" (double-quotes excluded). | |
552 | split this into archive name and member name. | |
553 | ||
554 | FIXME: This is a little hacky. Perhaps we should provide access | |
555 | to the solib's lm_info here? */ | |
556 | const int path_len = strlen (pathname); | |
692d6f97 | 557 | const char *sep; |
4d1eb6b4 | 558 | int filename_len; |
754c39c2 | 559 | int found_file; |
4d1eb6b4 JB |
560 | |
561 | if (pathname[path_len - 1] != ')') | |
562 | return solib_bfd_open (pathname); | |
563 | ||
564 | /* Search for the associated parens. */ | |
565 | sep = strrchr (pathname, '('); | |
566 | if (sep == NULL) | |
567 | { | |
568 | /* Should never happen, but recover as best as we can (trying | |
569 | to open pathname without decoding, possibly leading to | |
570 | a failure), rather than triggering an assert failure). */ | |
571 | warning (_("missing '(' in shared object pathname: %s"), pathname); | |
572 | return solib_bfd_open (pathname); | |
573 | } | |
574 | filename_len = sep - pathname; | |
575 | ||
192b62ce TT |
576 | std::string filename (string_printf ("%.*s", filename_len, pathname)); |
577 | std::string member_name (string_printf ("%.*s", path_len - filename_len - 2, | |
578 | sep + 1)); | |
4d1eb6b4 | 579 | |
754c39c2 UW |
580 | /* Calling solib_find makes certain that sysroot path is set properly |
581 | if program has a dependency on .a archive and sysroot is set via | |
582 | set sysroot command. */ | |
797bc1cb TT |
583 | gdb::unique_xmalloc_ptr<char> found_pathname |
584 | = solib_find (filename.c_str (), &found_file); | |
754c39c2 UW |
585 | if (found_pathname == NULL) |
586 | perror_with_name (pathname); | |
797bc1cb TT |
587 | gdb_bfd_ref_ptr archive_bfd (solib_bfd_fopen (found_pathname.get (), |
588 | found_file)); | |
4d1eb6b4 JB |
589 | if (archive_bfd == NULL) |
590 | { | |
591 | warning (_("Could not open `%s' as an executable file: %s"), | |
192b62ce | 592 | filename.c_str (), bfd_errmsg (bfd_get_error ())); |
4d1eb6b4 JB |
593 | return NULL; |
594 | } | |
595 | ||
192b62ce TT |
596 | if (bfd_check_format (archive_bfd.get (), bfd_object)) |
597 | return archive_bfd; | |
4d1eb6b4 | 598 | |
192b62ce | 599 | if (! bfd_check_format (archive_bfd.get (), bfd_archive)) |
4d1eb6b4 JB |
600 | { |
601 | warning (_("\"%s\": not in executable format: %s."), | |
192b62ce | 602 | filename.c_str (), bfd_errmsg (bfd_get_error ())); |
4d1eb6b4 JB |
603 | return NULL; |
604 | } | |
605 | ||
192b62ce TT |
606 | gdb_bfd_ref_ptr object_bfd |
607 | (gdb_bfd_openr_next_archived_file (archive_bfd.get (), NULL)); | |
4d1eb6b4 JB |
608 | while (object_bfd != NULL) |
609 | { | |
c7e97679 | 610 | if (member_name == bfd_get_filename (object_bfd.get ())) |
4d1eb6b4 JB |
611 | break; |
612 | ||
7a2a5ff8 AVK |
613 | std::string s = bfd_get_filename (object_bfd.get ()); |
614 | ||
615 | /* For every inferior after first int bfd system we | |
616 | will have the pathname instead of the member name | |
617 | registered. Hence the below condition exists. */ | |
618 | ||
619 | if (s.find ('(') != std::string::npos) | |
620 | { | |
621 | int pos = s.find ('('); | |
622 | int len = s.find (')') - s.find ('('); | |
623 | if (s.substr (pos+1, len-1) == member_name) | |
624 | return object_bfd; | |
625 | } | |
626 | ||
192b62ce TT |
627 | object_bfd = gdb_bfd_openr_next_archived_file (archive_bfd.get (), |
628 | object_bfd.get ()); | |
4d1eb6b4 JB |
629 | } |
630 | ||
631 | if (object_bfd == NULL) | |
632 | { | |
192b62ce TT |
633 | warning (_("\"%s\": member \"%s\" missing."), filename.c_str (), |
634 | member_name.c_str ()); | |
4d1eb6b4 JB |
635 | return NULL; |
636 | } | |
637 | ||
192b62ce | 638 | if (! bfd_check_format (object_bfd.get (), bfd_object)) |
4d1eb6b4 JB |
639 | { |
640 | warning (_("%s(%s): not in object format: %s."), | |
192b62ce TT |
641 | filename.c_str (), member_name.c_str (), |
642 | bfd_errmsg (bfd_get_error ())); | |
4d1eb6b4 JB |
643 | return NULL; |
644 | } | |
645 | ||
754c39c2 UW |
646 | /* Override the returned bfd's name with the name returned from solib_find |
647 | along with appended parenthesized member name in order to allow commands | |
648 | listing all shared libraries to display. Otherwise, we would only be | |
649 | displaying the name of the archive member object. */ | |
7b958a48 AM |
650 | std::string fname = string_printf ("%s%s", |
651 | bfd_get_filename (archive_bfd.get ()), | |
652 | sep); | |
653 | bfd_set_filename (object_bfd.get (), fname.c_str ()); | |
b030cf11 | 654 | |
4d1eb6b4 JB |
655 | return object_bfd; |
656 | } | |
657 | ||
658 | /* Return the obj_section corresponding to OBJFILE's data section, | |
659 | or NULL if not found. */ | |
660 | /* FIXME: Define in a more general location? */ | |
661 | ||
662 | static struct obj_section * | |
663 | data_obj_section_from_objfile (struct objfile *objfile) | |
664 | { | |
665 | struct obj_section *osect; | |
666 | ||
667 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
fd361982 | 668 | if (strcmp (bfd_section_name (osect->the_bfd_section), ".data") == 0) |
4d1eb6b4 JB |
669 | return osect; |
670 | ||
671 | return NULL; | |
672 | } | |
673 | ||
674 | /* Return the TOC value corresponding to the given PC address, | |
675 | or raise an error if the value could not be determined. */ | |
676 | ||
677 | CORE_ADDR | |
678 | solib_aix_get_toc_value (CORE_ADDR pc) | |
679 | { | |
680 | struct obj_section *pc_osect = find_pc_section (pc); | |
681 | struct obj_section *data_osect; | |
682 | CORE_ADDR result; | |
683 | ||
684 | if (pc_osect == NULL) | |
685 | error (_("unable to find TOC entry for pc %s " | |
686 | "(no section contains this PC)"), | |
687 | core_addr_to_string (pc)); | |
688 | ||
689 | data_osect = data_obj_section_from_objfile (pc_osect->objfile); | |
690 | if (data_osect == NULL) | |
691 | error (_("unable to find TOC entry for pc %s " | |
692 | "(%s has no data section)"), | |
4262abfb | 693 | core_addr_to_string (pc), objfile_name (pc_osect->objfile)); |
4d1eb6b4 | 694 | |
0c1bcd23 | 695 | result = data_osect->addr () + xcoff_get_toc_offset (pc_osect->objfile); |
eef401dc | 696 | |
e26d0dab SM |
697 | solib_debug_printf ("pc=%s -> %s", core_addr_to_string (pc), |
698 | core_addr_to_string (result)); | |
4d1eb6b4 JB |
699 | |
700 | return result; | |
701 | } | |
702 | ||
703 | /* This module's normal_stop observer. */ | |
704 | ||
705 | static void | |
313f3b21 | 706 | solib_aix_normal_stop_observer (struct bpstat *unused_1, int unused_2) |
4d1eb6b4 JB |
707 | { |
708 | struct solib_aix_inferior_data *data | |
709 | = get_solib_aix_inferior_data (current_inferior ()); | |
710 | ||
711 | /* The inferior execution has been resumed, and it just stopped | |
712 | again. This means that the list of shared libraries may have | |
713 | evolved. Reset our cached value. */ | |
a269fbf1 | 714 | data->library_list.reset (); |
4d1eb6b4 JB |
715 | } |
716 | ||
4d1eb6b4 | 717 | /* The target_so_ops for AIX targets. */ |
549dfc51 TT |
718 | const struct target_so_ops solib_aix_so_ops = |
719 | { | |
720 | solib_aix_relocate_section_addresses, | |
721 | solib_aix_free_so, | |
722 | nullptr, | |
723 | solib_aix_clear_solib, | |
724 | solib_aix_solib_create_inferior_hook, | |
725 | solib_aix_current_sos, | |
726 | solib_aix_open_symbol_file_object, | |
727 | solib_aix_in_dynsym_resolve_code, | |
728 | solib_aix_bfd_open, | |
729 | }; | |
4d1eb6b4 | 730 | |
6c265988 | 731 | void _initialize_solib_aix (); |
4d1eb6b4 | 732 | void |
6c265988 | 733 | _initialize_solib_aix () |
4d1eb6b4 | 734 | { |
c90e7d63 SM |
735 | gdb::observers::normal_stop.attach (solib_aix_normal_stop_observer, |
736 | "solib-aix"); | |
4d1eb6b4 | 737 | } |