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Commit | Line | Data |
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18b4d073 SM |
1 | /* Handle ROCm Code Objects for GDB, the GNU Debugger. |
2 | ||
14ade916 | 3 | Copyright (C) 2019-2023 Free Software Foundation, Inc. |
18b4d073 SM |
4 | |
5 | This file is part of GDB. | |
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, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | ||
22 | #include "amd-dbgapi-target.h" | |
23 | #include "amdgpu-tdep.h" | |
24 | #include "arch-utils.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/amdgpu.h" | |
27 | #include "gdbsupport/fileio.h" | |
28 | #include "inferior.h" | |
29 | #include "observable.h" | |
30 | #include "solib.h" | |
31 | #include "solib-svr4.h" | |
32 | #include "solist.h" | |
33 | #include "symfile.h" | |
8082468f | 34 | #include "gdbsupport/gdb_string_view.h" |
18b4d073 | 35 | |
1c850ca8 LS |
36 | #include <unordered_map> |
37 | ||
38 | namespace { | |
39 | ||
40 | /* Per inferior cache of opened file descriptors. */ | |
41 | struct rocm_solib_fd_cache | |
42 | { | |
43 | explicit rocm_solib_fd_cache (inferior *inf) : m_inferior (inf) {} | |
44 | DISABLE_COPY_AND_ASSIGN (rocm_solib_fd_cache); | |
45 | ||
46 | /* Return a read-only file descriptor to FILENAME and increment the | |
47 | associated reference count. | |
48 | ||
49 | Open the file FILENAME if it is not already opened, reuse the existing file | |
50 | descriptor otherwise. | |
51 | ||
52 | On error -1 is returned, and TARGET_ERRNO is set. */ | |
53 | int open (const std::string &filename, fileio_error *target_errno); | |
54 | ||
55 | /* Decrement the reference count to FD and close FD if the reference count | |
56 | reaches 0. | |
57 | ||
58 | On success, return 0. On error, return -1 and set TARGET_ERRNO. */ | |
59 | int close (int fd, fileio_error *target_errno); | |
60 | ||
61 | private: | |
62 | struct refcnt_fd | |
63 | { | |
64 | DISABLE_COPY_AND_ASSIGN (refcnt_fd); | |
65 | refcnt_fd (int fd, int refcnt) : fd (fd), refcnt (refcnt) {} | |
66 | ||
67 | int fd = -1; | |
68 | int refcnt = 0; | |
69 | }; | |
70 | ||
71 | inferior *m_inferior; | |
72 | std::unordered_map<std::string, refcnt_fd> m_cache; | |
73 | }; | |
74 | ||
75 | int | |
76 | rocm_solib_fd_cache::open (const std::string &filename, | |
77 | fileio_error *target_errno) | |
78 | { | |
79 | auto it = m_cache.find (filename); | |
80 | if (it == m_cache.end ()) | |
81 | { | |
82 | /* The file is not yet opened on the target. */ | |
83 | int fd | |
84 | = target_fileio_open (m_inferior, filename.c_str (), FILEIO_O_RDONLY, | |
85 | false, 0, target_errno); | |
86 | if (fd != -1) | |
87 | m_cache.emplace (std::piecewise_construct, | |
88 | std::forward_as_tuple (filename), | |
89 | std::forward_as_tuple (fd, 1)); | |
90 | return fd; | |
91 | } | |
92 | else | |
93 | { | |
94 | /* The file is already opened. Increment the refcnt and return the | |
95 | already opened FD. */ | |
96 | it->second.refcnt++; | |
97 | gdb_assert (it->second.fd != -1); | |
98 | return it->second.fd; | |
99 | } | |
100 | } | |
101 | ||
102 | int | |
103 | rocm_solib_fd_cache::close (int fd, fileio_error *target_errno) | |
104 | { | |
105 | using cache_val = std::unordered_map<std::string, refcnt_fd>::value_type; | |
106 | auto it | |
107 | = std::find_if (m_cache.begin (), m_cache.end (), | |
108 | [fd](const cache_val &s) { return s.second.fd == fd; }); | |
109 | ||
110 | gdb_assert (it != m_cache.end ()); | |
111 | ||
112 | it->second.refcnt--; | |
113 | if (it->second.refcnt == 0) | |
114 | { | |
115 | int ret = target_fileio_close (it->second.fd, target_errno); | |
116 | m_cache.erase (it); | |
117 | return ret; | |
118 | } | |
119 | else | |
120 | { | |
121 | /* Keep the FD open for the other users, return success. */ | |
122 | return 0; | |
123 | } | |
124 | } | |
125 | ||
126 | } /* Anonymous namespace. */ | |
127 | ||
18b4d073 SM |
128 | /* ROCm-specific inferior data. */ |
129 | ||
5340140e SM |
130 | struct rocm_so |
131 | { | |
132 | rocm_so (const char *name, std::string unique_name, lm_info_svr4_up lm_info) | |
133 | : name (name), | |
134 | unique_name (std::move (unique_name)), | |
135 | lm_info (std::move (lm_info)) | |
136 | {} | |
137 | ||
138 | std::string name, unique_name; | |
139 | lm_info_svr4_up lm_info; | |
140 | }; | |
141 | ||
18b4d073 SM |
142 | struct solib_info |
143 | { | |
1c850ca8 | 144 | explicit solib_info (inferior *inf) |
5340140e | 145 | : fd_cache (inf) |
1c850ca8 LS |
146 | {}; |
147 | ||
18b4d073 | 148 | /* List of code objects loaded into the inferior. */ |
5340140e | 149 | std::vector<rocm_so> solib_list; |
1c850ca8 LS |
150 | |
151 | /* Cache of opened FD in the inferior. */ | |
152 | rocm_solib_fd_cache fd_cache; | |
18b4d073 SM |
153 | }; |
154 | ||
155 | /* Per-inferior data key. */ | |
156 | static const registry<inferior>::key<solib_info> rocm_solib_data; | |
157 | ||
158 | static target_so_ops rocm_solib_ops; | |
159 | ||
18b4d073 SM |
160 | /* Fetch the solib_info data for INF. */ |
161 | ||
162 | static struct solib_info * | |
163 | get_solib_info (inferior *inf) | |
164 | { | |
165 | solib_info *info = rocm_solib_data.get (inf); | |
166 | ||
167 | if (info == nullptr) | |
1c850ca8 | 168 | info = rocm_solib_data.emplace (inf, inf); |
18b4d073 SM |
169 | |
170 | return info; | |
171 | } | |
172 | ||
173 | /* Relocate section addresses. */ | |
174 | ||
175 | static void | |
3fe0dfd1 | 176 | rocm_solib_relocate_section_addresses (shobj &so, |
18b4d073 SM |
177 | struct target_section *sec) |
178 | { | |
200b8563 | 179 | if (!is_amdgpu_arch (gdbarch_from_bfd (so.abfd.get ()))) |
18b4d073 SM |
180 | { |
181 | svr4_so_ops.relocate_section_addresses (so, sec); | |
182 | return; | |
183 | } | |
184 | ||
7ad0a42e | 185 | auto *li = gdb::checked_static_cast<lm_info_svr4 *> (so.lm_info.get ()); |
18b4d073 SM |
186 | sec->addr = sec->addr + li->l_addr; |
187 | sec->endaddr = sec->endaddr + li->l_addr; | |
188 | } | |
189 | ||
190 | static void rocm_update_solib_list (); | |
191 | ||
192 | static void | |
193 | rocm_solib_handle_event () | |
194 | { | |
195 | /* Since we sit on top of svr4_so_ops, we might get called following an event | |
196 | concerning host libraries. We must therefore forward the call. If the | |
197 | event was for a ROCm code object, it will be a no-op. On the other hand, | |
198 | if the event was for host libraries, rocm_update_solib_list will be | |
199 | essentially be a no-op (it will reload the same code object list as was | |
200 | previously loaded). */ | |
201 | svr4_so_ops.handle_event (); | |
202 | ||
203 | rocm_update_solib_list (); | |
204 | } | |
205 | ||
5340140e | 206 | /* Create so_list objects from rocm_so objects in SOS. */ |
18b4d073 | 207 | |
3fe0dfd1 | 208 | static intrusive_list<shobj> |
5340140e | 209 | so_list_from_rocm_sos (const std::vector<rocm_so> &sos) |
18b4d073 | 210 | { |
3fe0dfd1 | 211 | intrusive_list<shobj> dst; |
18b4d073 | 212 | |
5340140e | 213 | for (const rocm_so &so : sos) |
18b4d073 | 214 | { |
3fe0dfd1 | 215 | struct shobj *newobj = new struct shobj; |
6b62451a | 216 | newobj->lm_info = std::make_unique<lm_info_svr4> (*so.lm_info); |
5340140e | 217 | |
98107b0b SM |
218 | newobj->so_name = so.name; |
219 | newobj->so_original_name = so.unique_name; | |
18b4d073 | 220 | |
8971d278 | 221 | dst.push_back (*newobj); |
18b4d073 SM |
222 | } |
223 | ||
224 | return dst; | |
225 | } | |
226 | ||
3fe0dfd1 | 227 | /* Build a list of `struct shobj' objects describing the shared |
18b4d073 SM |
228 | objects currently loaded in the inferior. */ |
229 | ||
3fe0dfd1 | 230 | static intrusive_list<shobj> |
18b4d073 SM |
231 | rocm_solib_current_sos () |
232 | { | |
233 | /* First, retrieve the host-side shared library list. */ | |
3fe0dfd1 | 234 | intrusive_list<shobj> sos = svr4_so_ops.current_sos (); |
18b4d073 SM |
235 | |
236 | /* Then, the device-side shared library list. */ | |
5340140e | 237 | std::vector<rocm_so> &dev_sos = get_solib_info (current_inferior ())->solib_list; |
18b4d073 | 238 | |
5340140e | 239 | if (dev_sos.empty ()) |
8971d278 | 240 | return sos; |
18b4d073 | 241 | |
3fe0dfd1 | 242 | intrusive_list<shobj> dev_so_list = so_list_from_rocm_sos (dev_sos); |
18b4d073 | 243 | |
8971d278 | 244 | if (sos.empty ()) |
5340140e | 245 | return dev_so_list; |
18b4d073 SM |
246 | |
247 | /* Append our libraries to the end of the list. */ | |
8971d278 | 248 | sos.splice (std::move (dev_so_list)); |
18b4d073 | 249 | |
8971d278 | 250 | return sos; |
18b4d073 SM |
251 | } |
252 | ||
253 | namespace { | |
254 | ||
255 | /* Interface to interact with a ROCm code object stream. */ | |
256 | ||
e537ccc2 | 257 | struct rocm_code_object_stream : public gdb_bfd_iovec_base |
18b4d073 SM |
258 | { |
259 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream); | |
260 | ||
e537ccc2 | 261 | int stat (bfd *abfd, struct stat *sb) final override; |
18b4d073 | 262 | |
e537ccc2 | 263 | ~rocm_code_object_stream () override = default; |
18b4d073 SM |
264 | |
265 | protected: | |
266 | rocm_code_object_stream () = default; | |
267 | ||
268 | /* Return the size of the object file, or -1 if the size cannot be | |
269 | determined. | |
270 | ||
271 | This is a helper function for stat. */ | |
272 | virtual LONGEST size () = 0; | |
273 | }; | |
274 | ||
275 | int | |
e537ccc2 | 276 | rocm_code_object_stream::stat (bfd *, struct stat *sb) |
18b4d073 SM |
277 | { |
278 | const LONGEST size = this->size (); | |
279 | if (size == -1) | |
280 | return -1; | |
281 | ||
282 | memset (sb, '\0', sizeof (struct stat)); | |
283 | sb->st_size = size; | |
284 | return 0; | |
285 | } | |
286 | ||
287 | /* Interface to a ROCm object stream which is embedded in an ELF file | |
288 | accessible to the debugger. */ | |
289 | ||
290 | struct rocm_code_object_stream_file final : rocm_code_object_stream | |
291 | { | |
292 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_file); | |
293 | ||
1c850ca8 LS |
294 | rocm_code_object_stream_file (inferior *inf, int fd, ULONGEST offset, |
295 | ULONGEST size); | |
18b4d073 | 296 | |
e537ccc2 TT |
297 | file_ptr read (bfd *abfd, void *buf, file_ptr size, |
298 | file_ptr offset) override; | |
18b4d073 SM |
299 | |
300 | LONGEST size () override; | |
301 | ||
302 | ~rocm_code_object_stream_file () override; | |
303 | ||
304 | protected: | |
305 | ||
1c850ca8 LS |
306 | /* The inferior owning this code object stream. */ |
307 | inferior *m_inf; | |
308 | ||
18b4d073 SM |
309 | /* The target file descriptor for this stream. */ |
310 | int m_fd; | |
311 | ||
312 | /* The offset of the ELF file image in the target file. */ | |
313 | ULONGEST m_offset; | |
314 | ||
315 | /* The size of the ELF file image. The value 0 means that it was | |
316 | unspecified in the URI descriptor. */ | |
317 | ULONGEST m_size; | |
318 | }; | |
319 | ||
320 | rocm_code_object_stream_file::rocm_code_object_stream_file | |
1c850ca8 LS |
321 | (inferior *inf, int fd, ULONGEST offset, ULONGEST size) |
322 | : m_inf (inf), m_fd (fd), m_offset (offset), m_size (size) | |
18b4d073 SM |
323 | { |
324 | } | |
325 | ||
326 | file_ptr | |
e537ccc2 | 327 | rocm_code_object_stream_file::read (bfd *, void *buf, file_ptr size, |
18b4d073 SM |
328 | file_ptr offset) |
329 | { | |
330 | fileio_error target_errno; | |
331 | file_ptr nbytes = 0; | |
332 | while (size > 0) | |
333 | { | |
334 | QUIT; | |
335 | ||
336 | file_ptr bytes_read | |
337 | = target_fileio_pread (m_fd, static_cast<gdb_byte *> (buf) + nbytes, | |
338 | size, m_offset + offset + nbytes, | |
339 | &target_errno); | |
340 | ||
341 | if (bytes_read == 0) | |
342 | break; | |
343 | ||
344 | if (bytes_read < 0) | |
345 | { | |
346 | errno = fileio_error_to_host (target_errno); | |
347 | bfd_set_error (bfd_error_system_call); | |
348 | return -1; | |
349 | } | |
350 | ||
351 | nbytes += bytes_read; | |
352 | size -= bytes_read; | |
353 | } | |
354 | ||
355 | return nbytes; | |
356 | } | |
357 | ||
358 | LONGEST | |
359 | rocm_code_object_stream_file::size () | |
360 | { | |
361 | if (m_size == 0) | |
362 | { | |
363 | fileio_error target_errno; | |
364 | struct stat stat; | |
365 | if (target_fileio_fstat (m_fd, &stat, &target_errno) < 0) | |
366 | { | |
367 | errno = fileio_error_to_host (target_errno); | |
368 | bfd_set_error (bfd_error_system_call); | |
369 | return -1; | |
370 | } | |
371 | ||
372 | /* Check that the offset is valid. */ | |
373 | if (m_offset >= stat.st_size) | |
374 | { | |
375 | bfd_set_error (bfd_error_bad_value); | |
376 | return -1; | |
377 | } | |
378 | ||
379 | m_size = stat.st_size - m_offset; | |
380 | } | |
381 | ||
382 | return m_size; | |
383 | } | |
384 | ||
385 | rocm_code_object_stream_file::~rocm_code_object_stream_file () | |
386 | { | |
1c850ca8 | 387 | auto info = get_solib_info (m_inf); |
18b4d073 | 388 | fileio_error target_errno; |
1c850ca8 LS |
389 | if (info->fd_cache.close (m_fd, &target_errno) != 0) |
390 | warning (_("Failed to close solib: %s"), | |
391 | strerror (fileio_error_to_host (target_errno))); | |
18b4d073 SM |
392 | } |
393 | ||
394 | /* Interface to a code object which lives in the inferior's memory. */ | |
395 | ||
396 | struct rocm_code_object_stream_memory final : public rocm_code_object_stream | |
397 | { | |
398 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_memory); | |
399 | ||
400 | rocm_code_object_stream_memory (gdb::byte_vector buffer); | |
401 | ||
e537ccc2 TT |
402 | file_ptr read (bfd *abfd, void *buf, file_ptr size, |
403 | file_ptr offset) override; | |
18b4d073 SM |
404 | |
405 | protected: | |
406 | ||
407 | /* Snapshot of the original ELF image taken during load. This is done to | |
408 | support the situation where an inferior uses an in-memory image, and | |
409 | releases or re-uses this memory before GDB is done using it. */ | |
410 | gdb::byte_vector m_objfile_image; | |
411 | ||
412 | LONGEST size () override | |
413 | { | |
414 | return m_objfile_image.size (); | |
415 | } | |
416 | }; | |
417 | ||
418 | rocm_code_object_stream_memory::rocm_code_object_stream_memory | |
419 | (gdb::byte_vector buffer) | |
420 | : m_objfile_image (std::move (buffer)) | |
421 | { | |
422 | } | |
423 | ||
424 | file_ptr | |
e537ccc2 | 425 | rocm_code_object_stream_memory::read (bfd *, void *buf, file_ptr size, |
18b4d073 SM |
426 | file_ptr offset) |
427 | { | |
428 | if (size > m_objfile_image.size () - offset) | |
429 | size = m_objfile_image.size () - offset; | |
430 | ||
431 | memcpy (buf, m_objfile_image.data () + offset, size); | |
432 | return size; | |
433 | } | |
434 | ||
435 | } /* anonymous namespace */ | |
436 | ||
e537ccc2 TT |
437 | static gdb_bfd_iovec_base * |
438 | rocm_bfd_iovec_open (bfd *abfd, inferior *inferior) | |
18b4d073 | 439 | { |
8082468f LS |
440 | std::string_view uri (bfd_get_filename (abfd)); |
441 | std::string_view protocol_delim = "://"; | |
18b4d073 SM |
442 | size_t protocol_end = uri.find (protocol_delim); |
443 | std::string protocol = gdb::to_string (uri.substr (0, protocol_end)); | |
444 | protocol_end += protocol_delim.length (); | |
445 | ||
446 | std::transform (protocol.begin (), protocol.end (), protocol.begin (), | |
447 | [] (unsigned char c) { return std::tolower (c); }); | |
448 | ||
8082468f | 449 | std::string_view path; |
18b4d073 SM |
450 | size_t path_end = uri.find_first_of ("#?", protocol_end); |
451 | if (path_end != std::string::npos) | |
452 | path = uri.substr (protocol_end, path_end++ - protocol_end); | |
453 | else | |
454 | path = uri.substr (protocol_end); | |
455 | ||
456 | /* %-decode the string. */ | |
457 | std::string decoded_path; | |
458 | decoded_path.reserve (path.length ()); | |
459 | for (size_t i = 0; i < path.length (); ++i) | |
460 | if (path[i] == '%' | |
461 | && i < path.length () - 2 | |
462 | && std::isxdigit (path[i + 1]) | |
463 | && std::isxdigit (path[i + 2])) | |
464 | { | |
8082468f | 465 | std::string_view hex_digits = path.substr (i + 1, 2); |
18b4d073 SM |
466 | decoded_path += std::stoi (gdb::to_string (hex_digits), 0, 16); |
467 | i += 2; | |
468 | } | |
469 | else | |
470 | decoded_path += path[i]; | |
471 | ||
472 | /* Tokenize the query/fragment. */ | |
8082468f | 473 | std::vector<std::string_view> tokens; |
18b4d073 SM |
474 | size_t pos, last = path_end; |
475 | while ((pos = uri.find ('&', last)) != std::string::npos) | |
476 | { | |
477 | tokens.emplace_back (uri.substr (last, pos - last)); | |
478 | last = pos + 1; | |
479 | } | |
480 | ||
481 | if (last != std::string::npos) | |
482 | tokens.emplace_back (uri.substr (last)); | |
483 | ||
484 | /* Create a tag-value map from the tokenized query/fragment. */ | |
8082468f | 485 | std::unordered_map<std::string_view, std::string_view, |
18b4d073 | 486 | gdb::string_view_hash> params; |
8082468f | 487 | for (std::string_view token : tokens) |
18b4d073 SM |
488 | { |
489 | size_t delim = token.find ('='); | |
490 | if (delim != std::string::npos) | |
491 | { | |
8082468f LS |
492 | std::string_view tag = token.substr (0, delim); |
493 | std::string_view val = token.substr (delim + 1); | |
18b4d073 SM |
494 | params.emplace (tag, val); |
495 | } | |
496 | } | |
497 | ||
498 | try | |
499 | { | |
500 | ULONGEST offset = 0; | |
501 | ULONGEST size = 0; | |
18b4d073 | 502 | |
8082468f | 503 | auto try_strtoulst = [] (std::string_view v) |
18b4d073 SM |
504 | { |
505 | errno = 0; | |
506 | ULONGEST value = strtoulst (v.data (), nullptr, 0); | |
507 | if (errno != 0) | |
508 | { | |
509 | /* The actual message doesn't matter, the exception is caught | |
09e5f695 | 510 | below, transformed in a BFD error, and the message is lost. */ |
18b4d073 SM |
511 | error (_("Failed to parse integer.")); |
512 | } | |
513 | ||
514 | return value; | |
515 | }; | |
516 | ||
517 | auto offset_it = params.find ("offset"); | |
518 | if (offset_it != params.end ()) | |
519 | offset = try_strtoulst (offset_it->second); | |
520 | ||
521 | auto size_it = params.find ("size"); | |
522 | if (size_it != params.end ()) | |
523 | { | |
524 | size = try_strtoulst (size_it->second); | |
525 | if (size == 0) | |
526 | error (_("Invalid size value")); | |
527 | } | |
528 | ||
529 | if (protocol == "file") | |
530 | { | |
1c850ca8 | 531 | auto info = get_solib_info (inferior); |
18b4d073 | 532 | fileio_error target_errno; |
1c850ca8 | 533 | int fd = info->fd_cache.open (decoded_path, &target_errno); |
18b4d073 SM |
534 | |
535 | if (fd == -1) | |
536 | { | |
537 | errno = fileio_error_to_host (target_errno); | |
538 | bfd_set_error (bfd_error_system_call); | |
539 | return nullptr; | |
540 | } | |
541 | ||
1c850ca8 LS |
542 | return new rocm_code_object_stream_file (inferior, fd, offset, |
543 | size); | |
18b4d073 SM |
544 | } |
545 | ||
546 | if (protocol == "memory") | |
547 | { | |
548 | ULONGEST pid = try_strtoulst (path); | |
549 | if (pid != inferior->pid) | |
550 | { | |
551 | warning (_("`%s': code object is from another inferior"), | |
552 | gdb::to_string (uri).c_str ()); | |
553 | bfd_set_error (bfd_error_bad_value); | |
554 | return nullptr; | |
555 | } | |
556 | ||
557 | gdb::byte_vector buffer (size); | |
558 | if (target_read_memory (offset, buffer.data (), size) != 0) | |
559 | { | |
560 | warning (_("Failed to copy the code object from the inferior")); | |
561 | bfd_set_error (bfd_error_bad_value); | |
562 | return nullptr; | |
563 | } | |
564 | ||
565 | return new rocm_code_object_stream_memory (std::move (buffer)); | |
566 | } | |
567 | ||
568 | warning (_("`%s': protocol not supported: %s"), | |
569 | gdb::to_string (uri).c_str (), protocol.c_str ()); | |
570 | bfd_set_error (bfd_error_bad_value); | |
571 | return nullptr; | |
572 | } | |
573 | catch (const gdb_exception_quit &ex) | |
574 | { | |
575 | set_quit_flag (); | |
576 | bfd_set_error (bfd_error_bad_value); | |
577 | return nullptr; | |
578 | } | |
579 | catch (const gdb_exception &ex) | |
580 | { | |
581 | bfd_set_error (bfd_error_bad_value); | |
582 | return nullptr; | |
583 | } | |
584 | } | |
585 | ||
18b4d073 SM |
586 | static gdb_bfd_ref_ptr |
587 | rocm_solib_bfd_open (const char *pathname) | |
588 | { | |
589 | /* Handle regular files with SVR4 open. */ | |
590 | if (strstr (pathname, "://") == nullptr) | |
591 | return svr4_so_ops.bfd_open (pathname); | |
592 | ||
e537ccc2 TT |
593 | auto open = [] (bfd *nbfd) -> gdb_bfd_iovec_base * |
594 | { | |
595 | return rocm_bfd_iovec_open (nbfd, current_inferior ()); | |
596 | }; | |
597 | ||
598 | gdb_bfd_ref_ptr abfd = gdb_bfd_openr_iovec (pathname, "elf64-amdgcn", open); | |
18b4d073 SM |
599 | |
600 | if (abfd == nullptr) | |
601 | error (_("Could not open `%s' as an executable file: %s"), pathname, | |
602 | bfd_errmsg (bfd_get_error ())); | |
603 | ||
604 | /* Check bfd format. */ | |
605 | if (!bfd_check_format (abfd.get (), bfd_object)) | |
606 | error (_("`%s': not in executable format: %s"), | |
607 | bfd_get_filename (abfd.get ()), bfd_errmsg (bfd_get_error ())); | |
608 | ||
609 | unsigned char osabi = elf_elfheader (abfd)->e_ident[EI_OSABI]; | |
610 | unsigned char osabiversion = elf_elfheader (abfd)->e_ident[EI_ABIVERSION]; | |
611 | ||
612 | /* Check that the code object is using the HSA OS ABI. */ | |
613 | if (osabi != ELFOSABI_AMDGPU_HSA) | |
614 | error (_("`%s': ELF file OS ABI is not supported (%d)."), | |
615 | bfd_get_filename (abfd.get ()), osabi); | |
616 | ||
617 | /* We support HSA code objects V3 and greater. */ | |
618 | if (osabiversion < ELFABIVERSION_AMDGPU_HSA_V3) | |
619 | error (_("`%s': ELF file HSA OS ABI version is not supported (%d)."), | |
620 | bfd_get_filename (abfd.get ()), osabiversion); | |
621 | ||
540a5904 LS |
622 | /* For GDB to be able to use this solib, the exact AMDGPU processor type |
623 | must be supported by both BFD and the amd-dbgapi library. */ | |
624 | const unsigned char gfx_arch | |
625 | = elf_elfheader (abfd)->e_flags & EF_AMDGPU_MACH ; | |
626 | const bfd_arch_info_type *bfd_arch_info | |
627 | = bfd_lookup_arch (bfd_arch_amdgcn, gfx_arch); | |
628 | ||
629 | amd_dbgapi_architecture_id_t architecture_id; | |
630 | amd_dbgapi_status_t dbgapi_query_arch | |
631 | = amd_dbgapi_get_architecture (gfx_arch, &architecture_id); | |
632 | ||
633 | if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS | |
634 | || bfd_arch_info == nullptr) | |
635 | { | |
636 | if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS | |
637 | && bfd_arch_info == nullptr) | |
638 | { | |
639 | /* Neither of the libraries knows about this arch, so we cannot | |
640 | provide a human readable name for it. */ | |
641 | error (_("'%s': AMDGCN architecture %#02x is not supported."), | |
642 | bfd_get_filename (abfd.get ()), gfx_arch); | |
643 | } | |
644 | else if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS) | |
645 | { | |
646 | gdb_assert (bfd_arch_info != nullptr); | |
647 | error (_("'%s': AMDGCN architecture %s not supported by " | |
648 | "amd-dbgapi."), | |
649 | bfd_get_filename (abfd.get ()), | |
650 | bfd_arch_info->printable_name); | |
651 | } | |
652 | else | |
653 | { | |
654 | gdb_assert (dbgapi_query_arch == AMD_DBGAPI_STATUS_SUCCESS); | |
655 | char *arch_name; | |
656 | if (amd_dbgapi_architecture_get_info | |
657 | (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_NAME, | |
658 | sizeof (arch_name), &arch_name) != AMD_DBGAPI_STATUS_SUCCESS) | |
659 | error ("amd_dbgapi_architecture_get_info call failed for arch " | |
660 | "%#02x.", gfx_arch); | |
661 | gdb::unique_xmalloc_ptr<char> arch_name_cleaner (arch_name); | |
662 | ||
663 | error (_("'%s': AMDGCN architecture %s not supported."), | |
664 | bfd_get_filename (abfd.get ()), | |
665 | arch_name); | |
666 | } | |
667 | } | |
668 | ||
669 | gdb_assert (gdbarch_from_bfd (abfd.get ()) != nullptr); | |
670 | gdb_assert (is_amdgpu_arch (gdbarch_from_bfd (abfd.get ()))); | |
671 | ||
18b4d073 SM |
672 | return abfd; |
673 | } | |
674 | ||
675 | static void | |
676 | rocm_solib_create_inferior_hook (int from_tty) | |
677 | { | |
5340140e | 678 | get_solib_info (current_inferior ())->solib_list.clear (); |
18b4d073 SM |
679 | |
680 | svr4_so_ops.solib_create_inferior_hook (from_tty); | |
681 | } | |
682 | ||
683 | static void | |
684 | rocm_update_solib_list () | |
685 | { | |
686 | inferior *inf = current_inferior (); | |
687 | ||
688 | amd_dbgapi_process_id_t process_id = get_amd_dbgapi_process_id (inf); | |
689 | if (process_id.handle == AMD_DBGAPI_PROCESS_NONE.handle) | |
690 | return; | |
691 | ||
692 | solib_info *info = get_solib_info (inf); | |
693 | ||
5340140e SM |
694 | info->solib_list.clear (); |
695 | std::vector<rocm_so> &sos = info->solib_list; | |
18b4d073 SM |
696 | |
697 | amd_dbgapi_code_object_id_t *code_object_list; | |
698 | size_t count; | |
699 | ||
700 | amd_dbgapi_status_t status | |
701 | = amd_dbgapi_process_code_object_list (process_id, &count, | |
702 | &code_object_list, nullptr); | |
703 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
704 | { | |
705 | warning (_("amd_dbgapi_process_code_object_list failed (%s)"), | |
706 | get_status_string (status)); | |
707 | return; | |
708 | } | |
709 | ||
710 | for (size_t i = 0; i < count; ++i) | |
711 | { | |
712 | CORE_ADDR l_addr; | |
713 | char *uri_bytes; | |
714 | ||
715 | status = amd_dbgapi_code_object_get_info | |
716 | (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_LOAD_ADDRESS, | |
717 | sizeof (l_addr), &l_addr); | |
718 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
719 | continue; | |
720 | ||
721 | status = amd_dbgapi_code_object_get_info | |
722 | (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_URI_NAME, | |
723 | sizeof (uri_bytes), &uri_bytes); | |
724 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
725 | continue; | |
726 | ||
5340140e | 727 | gdb::unique_xmalloc_ptr<char> uri_bytes_holder (uri_bytes); |
18b4d073 | 728 | |
6b62451a | 729 | lm_info_svr4_up li = std::make_unique<lm_info_svr4> (); |
5340140e | 730 | li->l_addr = l_addr; |
18b4d073 | 731 | |
5340140e SM |
732 | /* Generate a unique name so that code objects with the same URI but |
733 | different load addresses are seen by gdb core as different shared | |
18b4d073 | 734 | objects. */ |
5340140e SM |
735 | std::string unique_name |
736 | = string_printf ("code_object_%ld", code_object_list[i].handle); | |
18b4d073 | 737 | |
5340140e | 738 | sos.emplace_back (uri_bytes, std::move (unique_name), std::move (li)); |
18b4d073 SM |
739 | } |
740 | ||
741 | xfree (code_object_list); | |
742 | ||
743 | if (rocm_solib_ops.current_sos == NULL) | |
744 | { | |
745 | /* Override what we need to. */ | |
746 | rocm_solib_ops = svr4_so_ops; | |
747 | rocm_solib_ops.current_sos = rocm_solib_current_sos; | |
748 | rocm_solib_ops.solib_create_inferior_hook | |
749 | = rocm_solib_create_inferior_hook; | |
750 | rocm_solib_ops.bfd_open = rocm_solib_bfd_open; | |
751 | rocm_solib_ops.relocate_section_addresses | |
752 | = rocm_solib_relocate_section_addresses; | |
753 | rocm_solib_ops.handle_event = rocm_solib_handle_event; | |
754 | ||
755 | /* Engage the ROCm so_ops. */ | |
27b1f19f | 756 | set_gdbarch_so_ops (current_inferior ()->arch (), &rocm_solib_ops); |
18b4d073 SM |
757 | } |
758 | } | |
759 | ||
760 | static void | |
761 | rocm_solib_target_inferior_created (inferior *inf) | |
762 | { | |
5340140e SM |
763 | get_solib_info (inf)->solib_list.clear (); |
764 | ||
18b4d073 SM |
765 | rocm_update_solib_list (); |
766 | ||
767 | /* Force GDB to reload the solibs. */ | |
768 | current_inferior ()->pspace->clear_solib_cache (); | |
769 | solib_add (nullptr, 0, auto_solib_add); | |
770 | } | |
771 | ||
772 | /* -Wmissing-prototypes */ | |
773 | extern initialize_file_ftype _initialize_rocm_solib; | |
774 | ||
775 | void | |
776 | _initialize_rocm_solib () | |
777 | { | |
778 | /* The dependency on the amd-dbgapi exists because solib-rocm's | |
779 | inferior_created observer needs amd-dbgapi to have attached the process, | |
780 | which happens in amd_dbgapi_target's inferior_created observer. */ | |
781 | gdb::observers::inferior_created.attach | |
782 | (rocm_solib_target_inferior_created, | |
783 | "solib-rocm", | |
784 | { &get_amd_dbgapi_target_inferior_created_observer_token () }); | |
785 | } |