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Commit | Line | Data |
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18b4d073 SM |
1 | /* Handle ROCm Code Objects for GDB, the GNU Debugger. |
2 | ||
1d506c26 | 3 | Copyright (C) 2019-2024 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 | ||
18b4d073 SM |
20 | |
21 | #include "amd-dbgapi-target.h" | |
22 | #include "amdgpu-tdep.h" | |
23 | #include "arch-utils.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/amdgpu.h" | |
e5dc0d5d | 26 | #include "event-top.h" |
18b4d073 SM |
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" | |
34 | ||
1c850ca8 LS |
35 | #include <unordered_map> |
36 | ||
37 | namespace { | |
38 | ||
39 | /* Per inferior cache of opened file descriptors. */ | |
40 | struct rocm_solib_fd_cache | |
41 | { | |
42 | explicit rocm_solib_fd_cache (inferior *inf) : m_inferior (inf) {} | |
43 | DISABLE_COPY_AND_ASSIGN (rocm_solib_fd_cache); | |
44 | ||
45 | /* Return a read-only file descriptor to FILENAME and increment the | |
46 | associated reference count. | |
47 | ||
48 | Open the file FILENAME if it is not already opened, reuse the existing file | |
49 | descriptor otherwise. | |
50 | ||
51 | On error -1 is returned, and TARGET_ERRNO is set. */ | |
52 | int open (const std::string &filename, fileio_error *target_errno); | |
53 | ||
54 | /* Decrement the reference count to FD and close FD if the reference count | |
55 | reaches 0. | |
56 | ||
57 | On success, return 0. On error, return -1 and set TARGET_ERRNO. */ | |
58 | int close (int fd, fileio_error *target_errno); | |
59 | ||
60 | private: | |
61 | struct refcnt_fd | |
62 | { | |
63 | DISABLE_COPY_AND_ASSIGN (refcnt_fd); | |
64 | refcnt_fd (int fd, int refcnt) : fd (fd), refcnt (refcnt) {} | |
65 | ||
66 | int fd = -1; | |
67 | int refcnt = 0; | |
68 | }; | |
69 | ||
70 | inferior *m_inferior; | |
71 | std::unordered_map<std::string, refcnt_fd> m_cache; | |
72 | }; | |
73 | ||
74 | int | |
75 | rocm_solib_fd_cache::open (const std::string &filename, | |
76 | fileio_error *target_errno) | |
77 | { | |
78 | auto it = m_cache.find (filename); | |
79 | if (it == m_cache.end ()) | |
80 | { | |
81 | /* The file is not yet opened on the target. */ | |
82 | int fd | |
83 | = target_fileio_open (m_inferior, filename.c_str (), FILEIO_O_RDONLY, | |
84 | false, 0, target_errno); | |
85 | if (fd != -1) | |
86 | m_cache.emplace (std::piecewise_construct, | |
87 | std::forward_as_tuple (filename), | |
88 | std::forward_as_tuple (fd, 1)); | |
89 | return fd; | |
90 | } | |
91 | else | |
92 | { | |
93 | /* The file is already opened. Increment the refcnt and return the | |
94 | already opened FD. */ | |
95 | it->second.refcnt++; | |
96 | gdb_assert (it->second.fd != -1); | |
97 | return it->second.fd; | |
98 | } | |
99 | } | |
100 | ||
101 | int | |
102 | rocm_solib_fd_cache::close (int fd, fileio_error *target_errno) | |
103 | { | |
104 | using cache_val = std::unordered_map<std::string, refcnt_fd>::value_type; | |
105 | auto it | |
106 | = std::find_if (m_cache.begin (), m_cache.end (), | |
107 | [fd](const cache_val &s) { return s.second.fd == fd; }); | |
108 | ||
109 | gdb_assert (it != m_cache.end ()); | |
110 | ||
111 | it->second.refcnt--; | |
112 | if (it->second.refcnt == 0) | |
113 | { | |
114 | int ret = target_fileio_close (it->second.fd, target_errno); | |
115 | m_cache.erase (it); | |
116 | return ret; | |
117 | } | |
118 | else | |
119 | { | |
120 | /* Keep the FD open for the other users, return success. */ | |
121 | return 0; | |
122 | } | |
123 | } | |
124 | ||
125 | } /* Anonymous namespace. */ | |
126 | ||
18b4d073 SM |
127 | /* ROCm-specific inferior data. */ |
128 | ||
5340140e SM |
129 | struct rocm_so |
130 | { | |
131 | rocm_so (const char *name, std::string unique_name, lm_info_svr4_up lm_info) | |
132 | : name (name), | |
133 | unique_name (std::move (unique_name)), | |
134 | lm_info (std::move (lm_info)) | |
135 | {} | |
136 | ||
137 | std::string name, unique_name; | |
138 | lm_info_svr4_up lm_info; | |
139 | }; | |
140 | ||
18b4d073 SM |
141 | struct solib_info |
142 | { | |
1c850ca8 | 143 | explicit solib_info (inferior *inf) |
5340140e | 144 | : fd_cache (inf) |
1c850ca8 LS |
145 | {}; |
146 | ||
18b4d073 | 147 | /* List of code objects loaded into the inferior. */ |
5340140e | 148 | std::vector<rocm_so> solib_list; |
1c850ca8 LS |
149 | |
150 | /* Cache of opened FD in the inferior. */ | |
151 | rocm_solib_fd_cache fd_cache; | |
18b4d073 SM |
152 | }; |
153 | ||
154 | /* Per-inferior data key. */ | |
155 | static const registry<inferior>::key<solib_info> rocm_solib_data; | |
156 | ||
6cedf3bc | 157 | static solib_ops rocm_solib_ops; |
18b4d073 | 158 | |
18b4d073 SM |
159 | /* Fetch the solib_info data for INF. */ |
160 | ||
161 | static struct solib_info * | |
162 | get_solib_info (inferior *inf) | |
163 | { | |
164 | solib_info *info = rocm_solib_data.get (inf); | |
165 | ||
166 | if (info == nullptr) | |
1c850ca8 | 167 | info = rocm_solib_data.emplace (inf, inf); |
18b4d073 SM |
168 | |
169 | return info; | |
170 | } | |
171 | ||
172 | /* Relocate section addresses. */ | |
173 | ||
174 | static void | |
7b323785 | 175 | rocm_solib_relocate_section_addresses (solib &so, |
18b4d073 SM |
176 | struct target_section *sec) |
177 | { | |
200b8563 | 178 | if (!is_amdgpu_arch (gdbarch_from_bfd (so.abfd.get ()))) |
18b4d073 SM |
179 | { |
180 | svr4_so_ops.relocate_section_addresses (so, sec); | |
181 | return; | |
182 | } | |
183 | ||
7ad0a42e | 184 | auto *li = gdb::checked_static_cast<lm_info_svr4 *> (so.lm_info.get ()); |
18b4d073 SM |
185 | sec->addr = sec->addr + li->l_addr; |
186 | sec->endaddr = sec->endaddr + li->l_addr; | |
187 | } | |
188 | ||
189 | static void rocm_update_solib_list (); | |
190 | ||
191 | static void | |
192 | rocm_solib_handle_event () | |
193 | { | |
194 | /* Since we sit on top of svr4_so_ops, we might get called following an event | |
195 | concerning host libraries. We must therefore forward the call. If the | |
196 | event was for a ROCm code object, it will be a no-op. On the other hand, | |
197 | if the event was for host libraries, rocm_update_solib_list will be | |
198 | essentially be a no-op (it will reload the same code object list as was | |
199 | previously loaded). */ | |
200 | svr4_so_ops.handle_event (); | |
201 | ||
202 | rocm_update_solib_list (); | |
203 | } | |
204 | ||
5340140e | 205 | /* Create so_list objects from rocm_so objects in SOS. */ |
18b4d073 | 206 | |
7b323785 | 207 | static intrusive_list<solib> |
5340140e | 208 | so_list_from_rocm_sos (const std::vector<rocm_so> &sos) |
18b4d073 | 209 | { |
7b323785 | 210 | intrusive_list<solib> dst; |
18b4d073 | 211 | |
5340140e | 212 | for (const rocm_so &so : sos) |
18b4d073 | 213 | { |
7b323785 | 214 | solib *newobj = new solib; |
6b62451a | 215 | newobj->lm_info = std::make_unique<lm_info_svr4> (*so.lm_info); |
5340140e | 216 | |
98107b0b SM |
217 | newobj->so_name = so.name; |
218 | newobj->so_original_name = so.unique_name; | |
18b4d073 | 219 | |
8971d278 | 220 | dst.push_back (*newobj); |
18b4d073 SM |
221 | } |
222 | ||
223 | return dst; | |
224 | } | |
225 | ||
7b323785 | 226 | /* Build a list of `struct solib' objects describing the shared |
18b4d073 SM |
227 | objects currently loaded in the inferior. */ |
228 | ||
7b323785 | 229 | static intrusive_list<solib> |
18b4d073 SM |
230 | rocm_solib_current_sos () |
231 | { | |
232 | /* First, retrieve the host-side shared library list. */ | |
7b323785 | 233 | intrusive_list<solib> sos = svr4_so_ops.current_sos (); |
18b4d073 SM |
234 | |
235 | /* Then, the device-side shared library list. */ | |
5340140e | 236 | std::vector<rocm_so> &dev_sos = get_solib_info (current_inferior ())->solib_list; |
18b4d073 | 237 | |
5340140e | 238 | if (dev_sos.empty ()) |
8971d278 | 239 | return sos; |
18b4d073 | 240 | |
7b323785 | 241 | intrusive_list<solib> dev_so_list = so_list_from_rocm_sos (dev_sos); |
18b4d073 | 242 | |
8971d278 | 243 | if (sos.empty ()) |
5340140e | 244 | return dev_so_list; |
18b4d073 SM |
245 | |
246 | /* Append our libraries to the end of the list. */ | |
8971d278 | 247 | sos.splice (std::move (dev_so_list)); |
18b4d073 | 248 | |
8971d278 | 249 | return sos; |
18b4d073 SM |
250 | } |
251 | ||
252 | namespace { | |
253 | ||
254 | /* Interface to interact with a ROCm code object stream. */ | |
255 | ||
e537ccc2 | 256 | struct rocm_code_object_stream : public gdb_bfd_iovec_base |
18b4d073 SM |
257 | { |
258 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream); | |
259 | ||
e537ccc2 | 260 | int stat (bfd *abfd, struct stat *sb) final override; |
18b4d073 | 261 | |
e537ccc2 | 262 | ~rocm_code_object_stream () override = default; |
18b4d073 SM |
263 | |
264 | protected: | |
265 | rocm_code_object_stream () = default; | |
266 | ||
267 | /* Return the size of the object file, or -1 if the size cannot be | |
268 | determined. | |
269 | ||
270 | This is a helper function for stat. */ | |
271 | virtual LONGEST size () = 0; | |
272 | }; | |
273 | ||
274 | int | |
e537ccc2 | 275 | rocm_code_object_stream::stat (bfd *, struct stat *sb) |
18b4d073 SM |
276 | { |
277 | const LONGEST size = this->size (); | |
278 | if (size == -1) | |
279 | return -1; | |
280 | ||
281 | memset (sb, '\0', sizeof (struct stat)); | |
282 | sb->st_size = size; | |
283 | return 0; | |
284 | } | |
285 | ||
286 | /* Interface to a ROCm object stream which is embedded in an ELF file | |
287 | accessible to the debugger. */ | |
288 | ||
289 | struct rocm_code_object_stream_file final : rocm_code_object_stream | |
290 | { | |
291 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_file); | |
292 | ||
1c850ca8 LS |
293 | rocm_code_object_stream_file (inferior *inf, int fd, ULONGEST offset, |
294 | ULONGEST size); | |
18b4d073 | 295 | |
e537ccc2 TT |
296 | file_ptr read (bfd *abfd, void *buf, file_ptr size, |
297 | file_ptr offset) override; | |
18b4d073 SM |
298 | |
299 | LONGEST size () override; | |
300 | ||
301 | ~rocm_code_object_stream_file () override; | |
302 | ||
303 | protected: | |
304 | ||
1c850ca8 LS |
305 | /* The inferior owning this code object stream. */ |
306 | inferior *m_inf; | |
307 | ||
18b4d073 SM |
308 | /* The target file descriptor for this stream. */ |
309 | int m_fd; | |
310 | ||
311 | /* The offset of the ELF file image in the target file. */ | |
312 | ULONGEST m_offset; | |
313 | ||
314 | /* The size of the ELF file image. The value 0 means that it was | |
315 | unspecified in the URI descriptor. */ | |
316 | ULONGEST m_size; | |
317 | }; | |
318 | ||
319 | rocm_code_object_stream_file::rocm_code_object_stream_file | |
1c850ca8 LS |
320 | (inferior *inf, int fd, ULONGEST offset, ULONGEST size) |
321 | : m_inf (inf), m_fd (fd), m_offset (offset), m_size (size) | |
18b4d073 SM |
322 | { |
323 | } | |
324 | ||
325 | file_ptr | |
e537ccc2 | 326 | rocm_code_object_stream_file::read (bfd *, void *buf, file_ptr size, |
18b4d073 SM |
327 | file_ptr offset) |
328 | { | |
329 | fileio_error target_errno; | |
330 | file_ptr nbytes = 0; | |
331 | while (size > 0) | |
332 | { | |
333 | QUIT; | |
334 | ||
335 | file_ptr bytes_read | |
336 | = target_fileio_pread (m_fd, static_cast<gdb_byte *> (buf) + nbytes, | |
337 | size, m_offset + offset + nbytes, | |
338 | &target_errno); | |
339 | ||
340 | if (bytes_read == 0) | |
341 | break; | |
342 | ||
343 | if (bytes_read < 0) | |
344 | { | |
345 | errno = fileio_error_to_host (target_errno); | |
346 | bfd_set_error (bfd_error_system_call); | |
347 | return -1; | |
348 | } | |
349 | ||
350 | nbytes += bytes_read; | |
351 | size -= bytes_read; | |
352 | } | |
353 | ||
354 | return nbytes; | |
355 | } | |
356 | ||
357 | LONGEST | |
358 | rocm_code_object_stream_file::size () | |
359 | { | |
360 | if (m_size == 0) | |
361 | { | |
362 | fileio_error target_errno; | |
363 | struct stat stat; | |
364 | if (target_fileio_fstat (m_fd, &stat, &target_errno) < 0) | |
365 | { | |
366 | errno = fileio_error_to_host (target_errno); | |
367 | bfd_set_error (bfd_error_system_call); | |
368 | return -1; | |
369 | } | |
370 | ||
371 | /* Check that the offset is valid. */ | |
372 | if (m_offset >= stat.st_size) | |
373 | { | |
374 | bfd_set_error (bfd_error_bad_value); | |
375 | return -1; | |
376 | } | |
377 | ||
378 | m_size = stat.st_size - m_offset; | |
379 | } | |
380 | ||
381 | return m_size; | |
382 | } | |
383 | ||
384 | rocm_code_object_stream_file::~rocm_code_object_stream_file () | |
385 | { | |
1c850ca8 | 386 | auto info = get_solib_info (m_inf); |
18b4d073 | 387 | fileio_error target_errno; |
1c850ca8 LS |
388 | if (info->fd_cache.close (m_fd, &target_errno) != 0) |
389 | warning (_("Failed to close solib: %s"), | |
390 | strerror (fileio_error_to_host (target_errno))); | |
18b4d073 SM |
391 | } |
392 | ||
393 | /* Interface to a code object which lives in the inferior's memory. */ | |
394 | ||
395 | struct rocm_code_object_stream_memory final : public rocm_code_object_stream | |
396 | { | |
397 | DISABLE_COPY_AND_ASSIGN (rocm_code_object_stream_memory); | |
398 | ||
399 | rocm_code_object_stream_memory (gdb::byte_vector buffer); | |
400 | ||
e537ccc2 TT |
401 | file_ptr read (bfd *abfd, void *buf, file_ptr size, |
402 | file_ptr offset) override; | |
18b4d073 SM |
403 | |
404 | protected: | |
405 | ||
406 | /* Snapshot of the original ELF image taken during load. This is done to | |
407 | support the situation where an inferior uses an in-memory image, and | |
408 | releases or re-uses this memory before GDB is done using it. */ | |
409 | gdb::byte_vector m_objfile_image; | |
410 | ||
411 | LONGEST size () override | |
412 | { | |
413 | return m_objfile_image.size (); | |
414 | } | |
415 | }; | |
416 | ||
417 | rocm_code_object_stream_memory::rocm_code_object_stream_memory | |
418 | (gdb::byte_vector buffer) | |
419 | : m_objfile_image (std::move (buffer)) | |
420 | { | |
421 | } | |
422 | ||
423 | file_ptr | |
e537ccc2 | 424 | rocm_code_object_stream_memory::read (bfd *, void *buf, file_ptr size, |
18b4d073 SM |
425 | file_ptr offset) |
426 | { | |
427 | if (size > m_objfile_image.size () - offset) | |
428 | size = m_objfile_image.size () - offset; | |
429 | ||
430 | memcpy (buf, m_objfile_image.data () + offset, size); | |
431 | return size; | |
432 | } | |
433 | ||
434 | } /* anonymous namespace */ | |
435 | ||
e537ccc2 TT |
436 | static gdb_bfd_iovec_base * |
437 | rocm_bfd_iovec_open (bfd *abfd, inferior *inferior) | |
18b4d073 | 438 | { |
8082468f LS |
439 | std::string_view uri (bfd_get_filename (abfd)); |
440 | std::string_view protocol_delim = "://"; | |
18b4d073 | 441 | size_t protocol_end = uri.find (protocol_delim); |
882b0505 | 442 | std::string protocol (uri.substr (0, protocol_end)); |
18b4d073 SM |
443 | protocol_end += protocol_delim.length (); |
444 | ||
445 | std::transform (protocol.begin (), protocol.end (), protocol.begin (), | |
446 | [] (unsigned char c) { return std::tolower (c); }); | |
447 | ||
8082468f | 448 | std::string_view path; |
18b4d073 SM |
449 | size_t path_end = uri.find_first_of ("#?", protocol_end); |
450 | if (path_end != std::string::npos) | |
451 | path = uri.substr (protocol_end, path_end++ - protocol_end); | |
452 | else | |
453 | path = uri.substr (protocol_end); | |
454 | ||
455 | /* %-decode the string. */ | |
456 | std::string decoded_path; | |
457 | decoded_path.reserve (path.length ()); | |
458 | for (size_t i = 0; i < path.length (); ++i) | |
459 | if (path[i] == '%' | |
460 | && i < path.length () - 2 | |
461 | && std::isxdigit (path[i + 1]) | |
462 | && std::isxdigit (path[i + 2])) | |
463 | { | |
8082468f | 464 | std::string_view hex_digits = path.substr (i + 1, 2); |
882b0505 | 465 | decoded_path += std::stoi (std::string (hex_digits), 0, 16); |
18b4d073 SM |
466 | i += 2; |
467 | } | |
468 | else | |
469 | decoded_path += path[i]; | |
470 | ||
471 | /* Tokenize the query/fragment. */ | |
8082468f | 472 | std::vector<std::string_view> tokens; |
18b4d073 SM |
473 | size_t pos, last = path_end; |
474 | while ((pos = uri.find ('&', last)) != std::string::npos) | |
475 | { | |
476 | tokens.emplace_back (uri.substr (last, pos - last)); | |
477 | last = pos + 1; | |
478 | } | |
479 | ||
480 | if (last != std::string::npos) | |
481 | tokens.emplace_back (uri.substr (last)); | |
482 | ||
483 | /* Create a tag-value map from the tokenized query/fragment. */ | |
8082468f | 484 | std::unordered_map<std::string_view, std::string_view, |
18b4d073 | 485 | gdb::string_view_hash> params; |
8082468f | 486 | for (std::string_view token : tokens) |
18b4d073 SM |
487 | { |
488 | size_t delim = token.find ('='); | |
489 | if (delim != std::string::npos) | |
490 | { | |
8082468f LS |
491 | std::string_view tag = token.substr (0, delim); |
492 | std::string_view val = token.substr (delim + 1); | |
18b4d073 SM |
493 | params.emplace (tag, val); |
494 | } | |
495 | } | |
496 | ||
497 | try | |
498 | { | |
499 | ULONGEST offset = 0; | |
500 | ULONGEST size = 0; | |
18b4d073 | 501 | |
8082468f | 502 | auto try_strtoulst = [] (std::string_view v) |
18b4d073 SM |
503 | { |
504 | errno = 0; | |
505 | ULONGEST value = strtoulst (v.data (), nullptr, 0); | |
506 | if (errno != 0) | |
507 | { | |
508 | /* The actual message doesn't matter, the exception is caught | |
09e5f695 | 509 | below, transformed in a BFD error, and the message is lost. */ |
18b4d073 SM |
510 | error (_("Failed to parse integer.")); |
511 | } | |
512 | ||
513 | return value; | |
514 | }; | |
515 | ||
516 | auto offset_it = params.find ("offset"); | |
517 | if (offset_it != params.end ()) | |
518 | offset = try_strtoulst (offset_it->second); | |
519 | ||
520 | auto size_it = params.find ("size"); | |
521 | if (size_it != params.end ()) | |
522 | { | |
523 | size = try_strtoulst (size_it->second); | |
524 | if (size == 0) | |
525 | error (_("Invalid size value")); | |
526 | } | |
527 | ||
528 | if (protocol == "file") | |
529 | { | |
1c850ca8 | 530 | auto info = get_solib_info (inferior); |
18b4d073 | 531 | fileio_error target_errno; |
1c850ca8 | 532 | int fd = info->fd_cache.open (decoded_path, &target_errno); |
18b4d073 SM |
533 | |
534 | if (fd == -1) | |
535 | { | |
536 | errno = fileio_error_to_host (target_errno); | |
537 | bfd_set_error (bfd_error_system_call); | |
538 | return nullptr; | |
539 | } | |
540 | ||
1c850ca8 LS |
541 | return new rocm_code_object_stream_file (inferior, fd, offset, |
542 | size); | |
18b4d073 SM |
543 | } |
544 | ||
545 | if (protocol == "memory") | |
546 | { | |
547 | ULONGEST pid = try_strtoulst (path); | |
548 | if (pid != inferior->pid) | |
549 | { | |
550 | warning (_("`%s': code object is from another inferior"), | |
882b0505 | 551 | std::string (uri).c_str ()); |
18b4d073 SM |
552 | bfd_set_error (bfd_error_bad_value); |
553 | return nullptr; | |
554 | } | |
555 | ||
556 | gdb::byte_vector buffer (size); | |
557 | if (target_read_memory (offset, buffer.data (), size) != 0) | |
558 | { | |
559 | warning (_("Failed to copy the code object from the inferior")); | |
560 | bfd_set_error (bfd_error_bad_value); | |
561 | return nullptr; | |
562 | } | |
563 | ||
564 | return new rocm_code_object_stream_memory (std::move (buffer)); | |
565 | } | |
566 | ||
567 | warning (_("`%s': protocol not supported: %s"), | |
882b0505 | 568 | std::string (uri).c_str (), protocol.c_str ()); |
18b4d073 SM |
569 | bfd_set_error (bfd_error_bad_value); |
570 | return nullptr; | |
571 | } | |
572 | catch (const gdb_exception_quit &ex) | |
573 | { | |
574 | set_quit_flag (); | |
575 | bfd_set_error (bfd_error_bad_value); | |
576 | return nullptr; | |
577 | } | |
578 | catch (const gdb_exception &ex) | |
579 | { | |
580 | bfd_set_error (bfd_error_bad_value); | |
581 | return nullptr; | |
582 | } | |
583 | } | |
584 | ||
18b4d073 SM |
585 | static gdb_bfd_ref_ptr |
586 | rocm_solib_bfd_open (const char *pathname) | |
587 | { | |
588 | /* Handle regular files with SVR4 open. */ | |
589 | if (strstr (pathname, "://") == nullptr) | |
590 | return svr4_so_ops.bfd_open (pathname); | |
591 | ||
e537ccc2 TT |
592 | auto open = [] (bfd *nbfd) -> gdb_bfd_iovec_base * |
593 | { | |
594 | return rocm_bfd_iovec_open (nbfd, current_inferior ()); | |
595 | }; | |
596 | ||
597 | gdb_bfd_ref_ptr abfd = gdb_bfd_openr_iovec (pathname, "elf64-amdgcn", open); | |
18b4d073 SM |
598 | |
599 | if (abfd == nullptr) | |
600 | error (_("Could not open `%s' as an executable file: %s"), pathname, | |
601 | bfd_errmsg (bfd_get_error ())); | |
602 | ||
603 | /* Check bfd format. */ | |
604 | if (!bfd_check_format (abfd.get (), bfd_object)) | |
605 | error (_("`%s': not in executable format: %s"), | |
606 | bfd_get_filename (abfd.get ()), bfd_errmsg (bfd_get_error ())); | |
607 | ||
608 | unsigned char osabi = elf_elfheader (abfd)->e_ident[EI_OSABI]; | |
609 | unsigned char osabiversion = elf_elfheader (abfd)->e_ident[EI_ABIVERSION]; | |
610 | ||
611 | /* Check that the code object is using the HSA OS ABI. */ | |
612 | if (osabi != ELFOSABI_AMDGPU_HSA) | |
613 | error (_("`%s': ELF file OS ABI is not supported (%d)."), | |
614 | bfd_get_filename (abfd.get ()), osabi); | |
615 | ||
616 | /* We support HSA code objects V3 and greater. */ | |
617 | if (osabiversion < ELFABIVERSION_AMDGPU_HSA_V3) | |
618 | error (_("`%s': ELF file HSA OS ABI version is not supported (%d)."), | |
619 | bfd_get_filename (abfd.get ()), osabiversion); | |
620 | ||
540a5904 LS |
621 | /* For GDB to be able to use this solib, the exact AMDGPU processor type |
622 | must be supported by both BFD and the amd-dbgapi library. */ | |
623 | const unsigned char gfx_arch | |
624 | = elf_elfheader (abfd)->e_flags & EF_AMDGPU_MACH ; | |
625 | const bfd_arch_info_type *bfd_arch_info | |
626 | = bfd_lookup_arch (bfd_arch_amdgcn, gfx_arch); | |
627 | ||
628 | amd_dbgapi_architecture_id_t architecture_id; | |
629 | amd_dbgapi_status_t dbgapi_query_arch | |
630 | = amd_dbgapi_get_architecture (gfx_arch, &architecture_id); | |
631 | ||
632 | if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS | |
633 | || bfd_arch_info == nullptr) | |
634 | { | |
635 | if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS | |
636 | && bfd_arch_info == nullptr) | |
637 | { | |
638 | /* Neither of the libraries knows about this arch, so we cannot | |
639 | provide a human readable name for it. */ | |
640 | error (_("'%s': AMDGCN architecture %#02x is not supported."), | |
641 | bfd_get_filename (abfd.get ()), gfx_arch); | |
642 | } | |
643 | else if (dbgapi_query_arch != AMD_DBGAPI_STATUS_SUCCESS) | |
644 | { | |
645 | gdb_assert (bfd_arch_info != nullptr); | |
646 | error (_("'%s': AMDGCN architecture %s not supported by " | |
647 | "amd-dbgapi."), | |
648 | bfd_get_filename (abfd.get ()), | |
649 | bfd_arch_info->printable_name); | |
650 | } | |
651 | else | |
652 | { | |
653 | gdb_assert (dbgapi_query_arch == AMD_DBGAPI_STATUS_SUCCESS); | |
654 | char *arch_name; | |
655 | if (amd_dbgapi_architecture_get_info | |
656 | (architecture_id, AMD_DBGAPI_ARCHITECTURE_INFO_NAME, | |
657 | sizeof (arch_name), &arch_name) != AMD_DBGAPI_STATUS_SUCCESS) | |
658 | error ("amd_dbgapi_architecture_get_info call failed for arch " | |
659 | "%#02x.", gfx_arch); | |
660 | gdb::unique_xmalloc_ptr<char> arch_name_cleaner (arch_name); | |
661 | ||
662 | error (_("'%s': AMDGCN architecture %s not supported."), | |
663 | bfd_get_filename (abfd.get ()), | |
664 | arch_name); | |
665 | } | |
666 | } | |
667 | ||
668 | gdb_assert (gdbarch_from_bfd (abfd.get ()) != nullptr); | |
669 | gdb_assert (is_amdgpu_arch (gdbarch_from_bfd (abfd.get ()))); | |
670 | ||
18b4d073 SM |
671 | return abfd; |
672 | } | |
673 | ||
674 | static void | |
675 | rocm_solib_create_inferior_hook (int from_tty) | |
676 | { | |
5340140e | 677 | get_solib_info (current_inferior ())->solib_list.clear (); |
18b4d073 SM |
678 | |
679 | svr4_so_ops.solib_create_inferior_hook (from_tty); | |
680 | } | |
681 | ||
682 | static void | |
683 | rocm_update_solib_list () | |
684 | { | |
685 | inferior *inf = current_inferior (); | |
686 | ||
687 | amd_dbgapi_process_id_t process_id = get_amd_dbgapi_process_id (inf); | |
688 | if (process_id.handle == AMD_DBGAPI_PROCESS_NONE.handle) | |
689 | return; | |
690 | ||
691 | solib_info *info = get_solib_info (inf); | |
692 | ||
5340140e SM |
693 | info->solib_list.clear (); |
694 | std::vector<rocm_so> &sos = info->solib_list; | |
18b4d073 SM |
695 | |
696 | amd_dbgapi_code_object_id_t *code_object_list; | |
697 | size_t count; | |
698 | ||
699 | amd_dbgapi_status_t status | |
700 | = amd_dbgapi_process_code_object_list (process_id, &count, | |
701 | &code_object_list, nullptr); | |
702 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
703 | { | |
704 | warning (_("amd_dbgapi_process_code_object_list failed (%s)"), | |
705 | get_status_string (status)); | |
706 | return; | |
707 | } | |
708 | ||
709 | for (size_t i = 0; i < count; ++i) | |
710 | { | |
711 | CORE_ADDR l_addr; | |
712 | char *uri_bytes; | |
713 | ||
714 | status = amd_dbgapi_code_object_get_info | |
715 | (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_LOAD_ADDRESS, | |
716 | sizeof (l_addr), &l_addr); | |
717 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
718 | continue; | |
719 | ||
720 | status = amd_dbgapi_code_object_get_info | |
721 | (code_object_list[i], AMD_DBGAPI_CODE_OBJECT_INFO_URI_NAME, | |
722 | sizeof (uri_bytes), &uri_bytes); | |
723 | if (status != AMD_DBGAPI_STATUS_SUCCESS) | |
724 | continue; | |
725 | ||
5340140e | 726 | gdb::unique_xmalloc_ptr<char> uri_bytes_holder (uri_bytes); |
18b4d073 | 727 | |
6b62451a | 728 | lm_info_svr4_up li = std::make_unique<lm_info_svr4> (); |
5340140e | 729 | li->l_addr = l_addr; |
18b4d073 | 730 | |
5340140e SM |
731 | /* Generate a unique name so that code objects with the same URI but |
732 | different load addresses are seen by gdb core as different shared | |
18b4d073 | 733 | objects. */ |
5340140e SM |
734 | std::string unique_name |
735 | = string_printf ("code_object_%ld", code_object_list[i].handle); | |
18b4d073 | 736 | |
5340140e | 737 | sos.emplace_back (uri_bytes, std::move (unique_name), std::move (li)); |
18b4d073 SM |
738 | } |
739 | ||
740 | xfree (code_object_list); | |
741 | ||
742 | if (rocm_solib_ops.current_sos == NULL) | |
743 | { | |
744 | /* Override what we need to. */ | |
745 | rocm_solib_ops = svr4_so_ops; | |
746 | rocm_solib_ops.current_sos = rocm_solib_current_sos; | |
747 | rocm_solib_ops.solib_create_inferior_hook | |
748 | = rocm_solib_create_inferior_hook; | |
749 | rocm_solib_ops.bfd_open = rocm_solib_bfd_open; | |
750 | rocm_solib_ops.relocate_section_addresses | |
751 | = rocm_solib_relocate_section_addresses; | |
752 | rocm_solib_ops.handle_event = rocm_solib_handle_event; | |
753 | ||
754 | /* Engage the ROCm so_ops. */ | |
27b1f19f | 755 | set_gdbarch_so_ops (current_inferior ()->arch (), &rocm_solib_ops); |
18b4d073 SM |
756 | } |
757 | } | |
758 | ||
759 | static void | |
760 | rocm_solib_target_inferior_created (inferior *inf) | |
761 | { | |
5340140e SM |
762 | get_solib_info (inf)->solib_list.clear (); |
763 | ||
18b4d073 SM |
764 | rocm_update_solib_list (); |
765 | ||
766 | /* Force GDB to reload the solibs. */ | |
767 | current_inferior ()->pspace->clear_solib_cache (); | |
768 | solib_add (nullptr, 0, auto_solib_add); | |
769 | } | |
770 | ||
771 | /* -Wmissing-prototypes */ | |
772 | extern initialize_file_ftype _initialize_rocm_solib; | |
773 | ||
774 | void | |
775 | _initialize_rocm_solib () | |
776 | { | |
777 | /* The dependency on the amd-dbgapi exists because solib-rocm's | |
778 | inferior_created observer needs amd-dbgapi to have attached the process, | |
779 | which happens in amd_dbgapi_target's inferior_created observer. */ | |
780 | gdb::observers::inferior_created.attach | |
781 | (rocm_solib_target_inferior_created, | |
782 | "solib-rocm", | |
783 | { &get_amd_dbgapi_target_inferior_created_observer_token () }); | |
784 | } |