Commit | Line | Data |
---|---|---|
4efc6507 DE |
1 | /* Handle JIT code generation in the inferior for GDB, the GNU Debugger. |
2 | ||
61baf725 | 3 | Copyright (C) 2009-2017 Free Software Foundation, Inc. |
4efc6507 DE |
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 "jit.h" | |
f997c383 | 23 | #include "jit-reader.h" |
1825a88d | 24 | #include "block.h" |
4efc6507 | 25 | #include "breakpoint.h" |
a255712f | 26 | #include "command.h" |
1825a88d | 27 | #include "dictionary.h" |
c9fb1240 | 28 | #include "filenames.h" |
1825a88d | 29 | #include "frame-unwind.h" |
a255712f | 30 | #include "gdbcmd.h" |
4efc6507 | 31 | #include "gdbcore.h" |
03673fc7 | 32 | #include "inferior.h" |
4efc6507 DE |
33 | #include "observer.h" |
34 | #include "objfiles.h" | |
3623dc3a | 35 | #include "regcache.h" |
4efc6507 DE |
36 | #include "symfile.h" |
37 | #include "symtab.h" | |
38 | #include "target.h" | |
784c47ee | 39 | #include "gdb-dlfcn.h" |
53ce3c39 | 40 | #include <sys/stat.h> |
cbb099e8 | 41 | #include "gdb_bfd.h" |
6571a381 TT |
42 | #include "readline/tilde.h" |
43 | #include "completer.h" | |
4efc6507 | 44 | |
b8e0a31c SD |
45 | static const char *jit_reader_dir = NULL; |
46 | ||
4efc6507 DE |
47 | static const struct objfile_data *jit_objfile_data; |
48 | ||
49 | static const char *const jit_break_name = "__jit_debug_register_code"; | |
50 | ||
51 | static const char *const jit_descriptor_name = "__jit_debug_descriptor"; | |
52 | ||
8eacb197 | 53 | static const struct program_space_data *jit_program_space_data = NULL; |
4efc6507 | 54 | |
e2bd3b15 | 55 | static void jit_inferior_init (struct gdbarch *gdbarch); |
20aa2c60 | 56 | static void jit_inferior_exit_hook (struct inferior *inf); |
3b2a0cf2 | 57 | |
3623dc3a SD |
58 | /* An unwinder is registered for every gdbarch. This key is used to |
59 | remember if the unwinder has been registered for a particular | |
60 | gdbarch. */ | |
61 | ||
62 | static struct gdbarch_data *jit_gdbarch_data; | |
63 | ||
a255712f PP |
64 | /* Non-zero if we want to see trace of jit level stuff. */ |
65 | ||
ccce17b0 | 66 | static unsigned int jit_debug = 0; |
a255712f PP |
67 | |
68 | static void | |
69 | show_jit_debug (struct ui_file *file, int from_tty, | |
70 | struct cmd_list_element *c, const char *value) | |
71 | { | |
72 | fprintf_filtered (file, _("JIT debugging is %s.\n"), value); | |
73 | } | |
74 | ||
4efc6507 DE |
75 | struct target_buffer |
76 | { | |
77 | CORE_ADDR base; | |
a255712f | 78 | ULONGEST size; |
4efc6507 DE |
79 | }; |
80 | ||
81 | /* Openning the file is a no-op. */ | |
82 | ||
83 | static void * | |
84 | mem_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
85 | { | |
86 | return open_closure; | |
87 | } | |
88 | ||
89 | /* Closing the file is just freeing the base/size pair on our side. */ | |
90 | ||
91 | static int | |
92 | mem_bfd_iovec_close (struct bfd *abfd, void *stream) | |
93 | { | |
94 | xfree (stream); | |
39ed5604 JK |
95 | |
96 | /* Zero means success. */ | |
97 | return 0; | |
4efc6507 DE |
98 | } |
99 | ||
100 | /* For reading the file, we just need to pass through to target_read_memory and | |
101 | fix up the arguments and return values. */ | |
102 | ||
103 | static file_ptr | |
104 | mem_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
105 | file_ptr nbytes, file_ptr offset) | |
106 | { | |
107 | int err; | |
108 | struct target_buffer *buffer = (struct target_buffer *) stream; | |
109 | ||
110 | /* If this read will read all of the file, limit it to just the rest. */ | |
111 | if (offset + nbytes > buffer->size) | |
112 | nbytes = buffer->size - offset; | |
113 | ||
114 | /* If there are no more bytes left, we've reached EOF. */ | |
115 | if (nbytes == 0) | |
116 | return 0; | |
117 | ||
118 | err = target_read_memory (buffer->base + offset, (gdb_byte *) buf, nbytes); | |
119 | if (err) | |
120 | return -1; | |
121 | ||
122 | return nbytes; | |
123 | } | |
124 | ||
125 | /* For statting the file, we only support the st_size attribute. */ | |
126 | ||
127 | static int | |
128 | mem_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
129 | { | |
130 | struct target_buffer *buffer = (struct target_buffer*) stream; | |
131 | ||
326a5c7e | 132 | memset (sb, 0, sizeof (struct stat)); |
4efc6507 DE |
133 | sb->st_size = buffer->size; |
134 | return 0; | |
135 | } | |
136 | ||
f0bbc364 TT |
137 | /* Open a BFD from the target's memory. */ |
138 | ||
192b62ce | 139 | static gdb_bfd_ref_ptr |
f0bbc364 TT |
140 | bfd_open_from_target_memory (CORE_ADDR addr, ULONGEST size, char *target) |
141 | { | |
8d749320 | 142 | struct target_buffer *buffer = XNEW (struct target_buffer); |
f0bbc364 TT |
143 | |
144 | buffer->base = addr; | |
145 | buffer->size = size; | |
64c31149 TT |
146 | return gdb_bfd_openr_iovec ("<in-memory>", target, |
147 | mem_bfd_iovec_open, | |
148 | buffer, | |
149 | mem_bfd_iovec_pread, | |
150 | mem_bfd_iovec_close, | |
151 | mem_bfd_iovec_stat); | |
f0bbc364 TT |
152 | } |
153 | ||
0e8621a0 TT |
154 | struct jit_reader |
155 | { | |
156 | jit_reader (struct gdb_reader_funcs *f, gdb_dlhandle_up &&h) | |
157 | : functions (f), handle (std::move (h)) | |
158 | { | |
159 | } | |
160 | ||
161 | ~jit_reader () | |
162 | { | |
163 | functions->destroy (functions); | |
164 | } | |
165 | ||
166 | jit_reader (const jit_reader &) = delete; | |
167 | jit_reader &operator= (const jit_reader &) = delete; | |
168 | ||
169 | struct gdb_reader_funcs *functions; | |
170 | gdb_dlhandle_up handle; | |
171 | }; | |
172 | ||
784c47ee SD |
173 | /* One reader that has been loaded successfully, and can potentially be used to |
174 | parse debug info. */ | |
175 | ||
0e8621a0 | 176 | static struct jit_reader *loaded_jit_reader = NULL; |
784c47ee SD |
177 | |
178 | typedef struct gdb_reader_funcs * (reader_init_fn_type) (void); | |
179 | static const char *reader_init_fn_sym = "gdb_init_reader"; | |
180 | ||
181 | /* Try to load FILE_NAME as a JIT debug info reader. */ | |
182 | ||
183 | static struct jit_reader * | |
184 | jit_reader_load (const char *file_name) | |
185 | { | |
784c47ee | 186 | reader_init_fn_type *init_fn; |
784c47ee | 187 | struct gdb_reader_funcs *funcs = NULL; |
784c47ee SD |
188 | |
189 | if (jit_debug) | |
190 | fprintf_unfiltered (gdb_stdlog, _("Opening shared object %s.\n"), | |
191 | file_name); | |
0e8621a0 | 192 | gdb_dlhandle_up so = gdb_dlopen (file_name); |
784c47ee | 193 | |
15cf126c | 194 | init_fn = (reader_init_fn_type *) gdb_dlsym (so, reader_init_fn_sym); |
784c47ee SD |
195 | if (!init_fn) |
196 | error (_("Could not locate initialization function: %s."), | |
197 | reader_init_fn_sym); | |
198 | ||
199 | if (gdb_dlsym (so, "plugin_is_GPL_compatible") == NULL) | |
200 | error (_("Reader not GPL compatible.")); | |
201 | ||
202 | funcs = init_fn (); | |
203 | if (funcs->reader_version != GDB_READER_INTERFACE_VERSION) | |
204 | error (_("Reader version does not match GDB version.")); | |
205 | ||
0e8621a0 | 206 | return new jit_reader (funcs, std::move (so)); |
784c47ee SD |
207 | } |
208 | ||
209 | /* Provides the jit-reader-load command. */ | |
210 | ||
211 | static void | |
212 | jit_reader_load_command (char *args, int from_tty) | |
213 | { | |
784c47ee SD |
214 | if (args == NULL) |
215 | error (_("No reader name provided.")); | |
7c218e6c | 216 | gdb::unique_xmalloc_ptr<char> file (tilde_expand (args)); |
784c47ee SD |
217 | |
218 | if (loaded_jit_reader != NULL) | |
219 | error (_("JIT reader already loaded. Run jit-reader-unload first.")); | |
220 | ||
7c218e6c TT |
221 | if (!IS_ABSOLUTE_PATH (file.get ())) |
222 | file.reset (xstrprintf ("%s%s%s", jit_reader_dir, SLASH_STRING, | |
223 | file.get ())); | |
784c47ee | 224 | |
7c218e6c | 225 | loaded_jit_reader = jit_reader_load (file.get ()); |
20aa2c60 PA |
226 | reinit_frame_cache (); |
227 | jit_inferior_created_hook (); | |
784c47ee SD |
228 | } |
229 | ||
230 | /* Provides the jit-reader-unload command. */ | |
231 | ||
232 | static void | |
233 | jit_reader_unload_command (char *args, int from_tty) | |
234 | { | |
235 | if (!loaded_jit_reader) | |
236 | error (_("No JIT reader loaded.")); | |
237 | ||
20aa2c60 PA |
238 | reinit_frame_cache (); |
239 | jit_inferior_exit_hook (current_inferior ()); | |
784c47ee | 240 | |
0e8621a0 | 241 | delete loaded_jit_reader; |
784c47ee SD |
242 | loaded_jit_reader = NULL; |
243 | } | |
244 | ||
8eacb197 | 245 | /* Per-program space structure recording which objfile has the JIT |
03bef283 | 246 | symbols. */ |
03673fc7 | 247 | |
8eacb197 | 248 | struct jit_program_space_data |
03673fc7 | 249 | { |
03bef283 TT |
250 | /* The objfile. This is NULL if no objfile holds the JIT |
251 | symbols. */ | |
252 | ||
253 | struct objfile *objfile; | |
f25c0135 | 254 | |
8eacb197 | 255 | /* If this program space has __jit_debug_register_code, this is the |
f25c0135 TT |
256 | cached address from the minimal symbol. This is used to detect |
257 | relocations requiring the breakpoint to be re-created. */ | |
258 | ||
259 | CORE_ADDR cached_code_address; | |
260 | ||
261 | /* This is the JIT event breakpoint, or NULL if it has not been | |
262 | set. */ | |
263 | ||
264 | struct breakpoint *jit_breakpoint; | |
03bef283 TT |
265 | }; |
266 | ||
8eacb197 | 267 | /* Per-objfile structure recording the addresses in the program space. |
f25c0135 TT |
268 | This object serves two purposes: for ordinary objfiles, it may |
269 | cache some symbols related to the JIT interface; and for | |
270 | JIT-created objfiles, it holds some information about the | |
271 | jit_code_entry. */ | |
03bef283 TT |
272 | |
273 | struct jit_objfile_data | |
274 | { | |
275 | /* Symbol for __jit_debug_register_code. */ | |
276 | struct minimal_symbol *register_code; | |
277 | ||
278 | /* Symbol for __jit_debug_descriptor. */ | |
279 | struct minimal_symbol *descriptor; | |
280 | ||
f25c0135 TT |
281 | /* Address of struct jit_code_entry in this objfile. This is only |
282 | non-zero for objfiles that represent code created by the JIT. */ | |
03bef283 | 283 | CORE_ADDR addr; |
03673fc7 PP |
284 | }; |
285 | ||
03bef283 TT |
286 | /* Fetch the jit_objfile_data associated with OBJF. If no data exists |
287 | yet, make a new structure and attach it. */ | |
288 | ||
289 | static struct jit_objfile_data * | |
290 | get_jit_objfile_data (struct objfile *objf) | |
291 | { | |
292 | struct jit_objfile_data *objf_data; | |
293 | ||
9a3c8263 | 294 | objf_data = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data); |
03bef283 TT |
295 | if (objf_data == NULL) |
296 | { | |
41bf6aca | 297 | objf_data = XCNEW (struct jit_objfile_data); |
03bef283 TT |
298 | set_objfile_data (objf, jit_objfile_data, objf_data); |
299 | } | |
300 | ||
301 | return objf_data; | |
302 | } | |
303 | ||
b4264740 SD |
304 | /* Remember OBJFILE has been created for struct jit_code_entry located |
305 | at inferior address ENTRY. */ | |
1825a88d SD |
306 | |
307 | static void | |
308 | add_objfile_entry (struct objfile *objfile, CORE_ADDR entry) | |
309 | { | |
03bef283 | 310 | struct jit_objfile_data *objf_data; |
1825a88d | 311 | |
03bef283 TT |
312 | objf_data = get_jit_objfile_data (objfile); |
313 | objf_data->addr = entry; | |
1825a88d SD |
314 | } |
315 | ||
8eacb197 TT |
316 | /* Return jit_program_space_data for current program space. Allocate |
317 | if not already present. */ | |
03673fc7 | 318 | |
8eacb197 TT |
319 | static struct jit_program_space_data * |
320 | get_jit_program_space_data (void) | |
03673fc7 | 321 | { |
8eacb197 | 322 | struct jit_program_space_data *ps_data; |
03673fc7 | 323 | |
9a3c8263 SM |
324 | ps_data |
325 | = ((struct jit_program_space_data *) | |
326 | program_space_data (current_program_space, jit_program_space_data)); | |
8eacb197 | 327 | if (ps_data == NULL) |
03673fc7 | 328 | { |
41bf6aca | 329 | ps_data = XCNEW (struct jit_program_space_data); |
8eacb197 TT |
330 | set_program_space_data (current_program_space, jit_program_space_data, |
331 | ps_data); | |
03673fc7 PP |
332 | } |
333 | ||
8eacb197 | 334 | return ps_data; |
03673fc7 PP |
335 | } |
336 | ||
337 | static void | |
8eacb197 | 338 | jit_program_space_data_cleanup (struct program_space *ps, void *arg) |
03673fc7 PP |
339 | { |
340 | xfree (arg); | |
341 | } | |
342 | ||
1777feb0 | 343 | /* Helper function for reading the global JIT descriptor from remote |
03bef283 | 344 | memory. Returns 1 if all went well, 0 otherwise. */ |
4efc6507 | 345 | |
03bef283 | 346 | static int |
0756c555 | 347 | jit_read_descriptor (struct gdbarch *gdbarch, |
03673fc7 | 348 | struct jit_descriptor *descriptor, |
8eacb197 | 349 | struct jit_program_space_data *ps_data) |
4efc6507 DE |
350 | { |
351 | int err; | |
352 | struct type *ptr_type; | |
353 | int ptr_size; | |
354 | int desc_size; | |
355 | gdb_byte *desc_buf; | |
0756c555 | 356 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
03bef283 TT |
357 | struct jit_objfile_data *objf_data; |
358 | ||
8eacb197 | 359 | if (ps_data->objfile == NULL) |
03bef283 | 360 | return 0; |
8eacb197 | 361 | objf_data = get_jit_objfile_data (ps_data->objfile); |
03bef283 TT |
362 | if (objf_data->descriptor == NULL) |
363 | return 0; | |
364 | ||
365 | if (jit_debug) | |
366 | fprintf_unfiltered (gdb_stdlog, | |
367 | "jit_read_descriptor, descriptor_addr = %s\n", | |
77e371c0 TT |
368 | paddress (gdbarch, MSYMBOL_VALUE_ADDRESS (ps_data->objfile, |
369 | objf_data->descriptor))); | |
4efc6507 DE |
370 | |
371 | /* Figure out how big the descriptor is on the remote and how to read it. */ | |
0756c555 | 372 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 DE |
373 | ptr_size = TYPE_LENGTH (ptr_type); |
374 | desc_size = 8 + 2 * ptr_size; /* Two 32-bit ints and two pointers. */ | |
224c3ddb | 375 | desc_buf = (gdb_byte *) alloca (desc_size); |
4efc6507 DE |
376 | |
377 | /* Read the descriptor. */ | |
77e371c0 TT |
378 | err = target_read_memory (MSYMBOL_VALUE_ADDRESS (ps_data->objfile, |
379 | objf_data->descriptor), | |
03bef283 | 380 | desc_buf, desc_size); |
4efc6507 | 381 | if (err) |
03bef283 TT |
382 | { |
383 | printf_unfiltered (_("Unable to read JIT descriptor from " | |
384 | "remote memory\n")); | |
385 | return 0; | |
386 | } | |
4efc6507 DE |
387 | |
388 | /* Fix the endianness to match the host. */ | |
389 | descriptor->version = extract_unsigned_integer (&desc_buf[0], 4, byte_order); | |
390 | descriptor->action_flag = | |
391 | extract_unsigned_integer (&desc_buf[4], 4, byte_order); | |
392 | descriptor->relevant_entry = extract_typed_address (&desc_buf[8], ptr_type); | |
393 | descriptor->first_entry = | |
394 | extract_typed_address (&desc_buf[8 + ptr_size], ptr_type); | |
03bef283 TT |
395 | |
396 | return 1; | |
4efc6507 DE |
397 | } |
398 | ||
399 | /* Helper function for reading a JITed code entry from remote memory. */ | |
400 | ||
401 | static void | |
0756c555 DE |
402 | jit_read_code_entry (struct gdbarch *gdbarch, |
403 | CORE_ADDR code_addr, struct jit_code_entry *code_entry) | |
4efc6507 | 404 | { |
205c306f | 405 | int err, off; |
4efc6507 DE |
406 | struct type *ptr_type; |
407 | int ptr_size; | |
408 | int entry_size; | |
205c306f | 409 | int align_bytes; |
4efc6507 | 410 | gdb_byte *entry_buf; |
0756c555 | 411 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
4efc6507 DE |
412 | |
413 | /* Figure out how big the entry is on the remote and how to read it. */ | |
0756c555 | 414 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 | 415 | ptr_size = TYPE_LENGTH (ptr_type); |
227ee7fc RH |
416 | |
417 | /* Figure out where the longlong value will be. */ | |
418 | align_bytes = gdbarch_long_long_align_bit (gdbarch) / 8; | |
419 | off = 3 * ptr_size; | |
420 | off = (off + (align_bytes - 1)) & ~(align_bytes - 1); | |
421 | ||
422 | entry_size = off + 8; /* Three pointers and one 64-bit int. */ | |
224c3ddb | 423 | entry_buf = (gdb_byte *) alloca (entry_size); |
4efc6507 DE |
424 | |
425 | /* Read the entry. */ | |
426 | err = target_read_memory (code_addr, entry_buf, entry_size); | |
427 | if (err) | |
428 | error (_("Unable to read JIT code entry from remote memory!")); | |
429 | ||
430 | /* Fix the endianness to match the host. */ | |
0756c555 | 431 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 DE |
432 | code_entry->next_entry = extract_typed_address (&entry_buf[0], ptr_type); |
433 | code_entry->prev_entry = | |
434 | extract_typed_address (&entry_buf[ptr_size], ptr_type); | |
435 | code_entry->symfile_addr = | |
436 | extract_typed_address (&entry_buf[2 * ptr_size], ptr_type); | |
437 | code_entry->symfile_size = | |
205c306f | 438 | extract_unsigned_integer (&entry_buf[off], 8, byte_order); |
4efc6507 DE |
439 | } |
440 | ||
1825a88d SD |
441 | /* Proxy object for building a block. */ |
442 | ||
443 | struct gdb_block | |
444 | { | |
445 | /* gdb_blocks are linked into a tree structure. Next points to the | |
446 | next node at the same depth as this block and parent to the | |
447 | parent gdb_block. */ | |
448 | struct gdb_block *next, *parent; | |
449 | ||
450 | /* Points to the "real" block that is being built out of this | |
451 | instance. This block will be added to a blockvector, which will | |
452 | then be added to a symtab. */ | |
453 | struct block *real_block; | |
454 | ||
455 | /* The first and last code address corresponding to this block. */ | |
456 | CORE_ADDR begin, end; | |
457 | ||
458 | /* The name of this block (if any). If this is non-NULL, the | |
459 | FUNCTION symbol symbol is set to this value. */ | |
460 | const char *name; | |
461 | }; | |
462 | ||
463 | /* Proxy object for building a symtab. */ | |
464 | ||
465 | struct gdb_symtab | |
466 | { | |
467 | /* The list of blocks in this symtab. These will eventually be | |
468 | converted to real blocks. */ | |
469 | struct gdb_block *blocks; | |
470 | ||
471 | /* The number of blocks inserted. */ | |
472 | int nblocks; | |
473 | ||
474 | /* A mapping between line numbers to PC. */ | |
475 | struct linetable *linetable; | |
476 | ||
477 | /* The source file for this symtab. */ | |
478 | const char *file_name; | |
479 | struct gdb_symtab *next; | |
480 | }; | |
481 | ||
482 | /* Proxy object for building an object. */ | |
483 | ||
484 | struct gdb_object | |
485 | { | |
486 | struct gdb_symtab *symtabs; | |
487 | }; | |
488 | ||
489 | /* The type of the `private' data passed around by the callback | |
490 | functions. */ | |
491 | ||
492 | typedef CORE_ADDR jit_dbg_reader_data; | |
493 | ||
494 | /* The reader calls into this function to read data off the targets | |
495 | address space. */ | |
496 | ||
497 | static enum gdb_status | |
498 | jit_target_read_impl (GDB_CORE_ADDR target_mem, void *gdb_buf, int len) | |
499 | { | |
cb0a2700 SM |
500 | int result = target_read_memory ((CORE_ADDR) target_mem, |
501 | (gdb_byte *) gdb_buf, len); | |
1825a88d SD |
502 | if (result == 0) |
503 | return GDB_SUCCESS; | |
504 | else | |
505 | return GDB_FAIL; | |
506 | } | |
507 | ||
508 | /* The reader calls into this function to create a new gdb_object | |
509 | which it can then pass around to the other callbacks. Right now, | |
510 | all that is required is allocating the memory. */ | |
511 | ||
512 | static struct gdb_object * | |
513 | jit_object_open_impl (struct gdb_symbol_callbacks *cb) | |
514 | { | |
515 | /* CB is not required right now, but sometime in the future we might | |
516 | need a handle to it, and we'd like to do that without breaking | |
517 | the ABI. */ | |
41bf6aca | 518 | return XCNEW (struct gdb_object); |
1825a88d SD |
519 | } |
520 | ||
521 | /* Readers call into this function to open a new gdb_symtab, which, | |
522 | again, is passed around to other callbacks. */ | |
523 | ||
524 | static struct gdb_symtab * | |
525 | jit_symtab_open_impl (struct gdb_symbol_callbacks *cb, | |
526 | struct gdb_object *object, | |
527 | const char *file_name) | |
528 | { | |
529 | struct gdb_symtab *ret; | |
530 | ||
531 | /* CB stays unused. See comment in jit_object_open_impl. */ | |
532 | ||
41bf6aca | 533 | ret = XCNEW (struct gdb_symtab); |
1825a88d SD |
534 | ret->file_name = file_name ? xstrdup (file_name) : xstrdup (""); |
535 | ret->next = object->symtabs; | |
536 | object->symtabs = ret; | |
537 | return ret; | |
538 | } | |
539 | ||
540 | /* Returns true if the block corresponding to old should be placed | |
541 | before the block corresponding to new in the final blockvector. */ | |
542 | ||
543 | static int | |
544 | compare_block (const struct gdb_block *const old, | |
fe978cb0 | 545 | const struct gdb_block *const newobj) |
1825a88d SD |
546 | { |
547 | if (old == NULL) | |
548 | return 1; | |
fe978cb0 | 549 | if (old->begin < newobj->begin) |
1825a88d | 550 | return 1; |
fe978cb0 | 551 | else if (old->begin == newobj->begin) |
1825a88d | 552 | { |
fe978cb0 | 553 | if (old->end > newobj->end) |
1825a88d SD |
554 | return 1; |
555 | else | |
556 | return 0; | |
557 | } | |
558 | else | |
559 | return 0; | |
560 | } | |
561 | ||
562 | /* Called by readers to open a new gdb_block. This function also | |
563 | inserts the new gdb_block in the correct place in the corresponding | |
564 | gdb_symtab. */ | |
565 | ||
566 | static struct gdb_block * | |
567 | jit_block_open_impl (struct gdb_symbol_callbacks *cb, | |
568 | struct gdb_symtab *symtab, struct gdb_block *parent, | |
569 | GDB_CORE_ADDR begin, GDB_CORE_ADDR end, const char *name) | |
570 | { | |
41bf6aca | 571 | struct gdb_block *block = XCNEW (struct gdb_block); |
1825a88d SD |
572 | |
573 | block->next = symtab->blocks; | |
574 | block->begin = (CORE_ADDR) begin; | |
575 | block->end = (CORE_ADDR) end; | |
576 | block->name = name ? xstrdup (name) : NULL; | |
577 | block->parent = parent; | |
578 | ||
579 | /* Ensure that the blocks are inserted in the correct (reverse of | |
580 | the order expected by blockvector). */ | |
581 | if (compare_block (symtab->blocks, block)) | |
582 | { | |
583 | symtab->blocks = block; | |
584 | } | |
585 | else | |
586 | { | |
587 | struct gdb_block *i = symtab->blocks; | |
588 | ||
589 | for (;; i = i->next) | |
590 | { | |
591 | /* Guaranteed to terminate, since compare_block (NULL, _) | |
592 | returns 1. */ | |
593 | if (compare_block (i->next, block)) | |
594 | { | |
595 | block->next = i->next; | |
596 | i->next = block; | |
597 | break; | |
598 | } | |
599 | } | |
600 | } | |
601 | symtab->nblocks++; | |
602 | ||
603 | return block; | |
604 | } | |
605 | ||
606 | /* Readers call this to add a line mapping (from PC to line number) to | |
607 | a gdb_symtab. */ | |
4efc6507 DE |
608 | |
609 | static void | |
1825a88d SD |
610 | jit_symtab_line_mapping_add_impl (struct gdb_symbol_callbacks *cb, |
611 | struct gdb_symtab *stab, int nlines, | |
612 | struct gdb_line_mapping *map) | |
613 | { | |
614 | int i; | |
224c3ddb | 615 | int alloc_len; |
1825a88d SD |
616 | |
617 | if (nlines < 1) | |
618 | return; | |
619 | ||
224c3ddb SM |
620 | alloc_len = sizeof (struct linetable) |
621 | + (nlines - 1) * sizeof (struct linetable_entry); | |
622 | stab->linetable = (struct linetable *) xmalloc (alloc_len); | |
1825a88d SD |
623 | stab->linetable->nitems = nlines; |
624 | for (i = 0; i < nlines; i++) | |
625 | { | |
626 | stab->linetable->item[i].pc = (CORE_ADDR) map[i].pc; | |
627 | stab->linetable->item[i].line = map[i].line; | |
628 | } | |
629 | } | |
630 | ||
631 | /* Called by readers to close a gdb_symtab. Does not need to do | |
632 | anything as of now. */ | |
633 | ||
634 | static void | |
635 | jit_symtab_close_impl (struct gdb_symbol_callbacks *cb, | |
636 | struct gdb_symtab *stab) | |
637 | { | |
638 | /* Right now nothing needs to be done here. We may need to do some | |
639 | cleanup here in the future (again, without breaking the plugin | |
640 | ABI). */ | |
641 | } | |
642 | ||
643 | /* Transform STAB to a proper symtab, and add it it OBJFILE. */ | |
644 | ||
645 | static void | |
646 | finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile) | |
647 | { | |
43f3e411 | 648 | struct compunit_symtab *cust; |
1825a88d SD |
649 | struct gdb_block *gdb_block_iter, *gdb_block_iter_tmp; |
650 | struct block *block_iter; | |
241fd515 AM |
651 | int actual_nblocks, i; |
652 | size_t blockvector_size; | |
1825a88d | 653 | CORE_ADDR begin, end; |
346d1dfe | 654 | struct blockvector *bv; |
1825a88d SD |
655 | |
656 | actual_nblocks = FIRST_LOCAL_BLOCK + stab->nblocks; | |
657 | ||
43f3e411 DE |
658 | cust = allocate_compunit_symtab (objfile, stab->file_name); |
659 | allocate_symtab (cust, stab->file_name); | |
660 | add_compunit_symtab_to_objfile (cust); | |
661 | ||
1825a88d | 662 | /* JIT compilers compile in memory. */ |
43f3e411 | 663 | COMPUNIT_DIRNAME (cust) = NULL; |
1825a88d SD |
664 | |
665 | /* Copy over the linetable entry if one was provided. */ | |
666 | if (stab->linetable) | |
667 | { | |
241fd515 AM |
668 | size_t size = ((stab->linetable->nitems - 1) |
669 | * sizeof (struct linetable_entry) | |
670 | + sizeof (struct linetable)); | |
43f3e411 | 671 | SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)) |
224c3ddb | 672 | = (struct linetable *) obstack_alloc (&objfile->objfile_obstack, size); |
43f3e411 DE |
673 | memcpy (SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)), stab->linetable, |
674 | size); | |
1825a88d SD |
675 | } |
676 | ||
677 | blockvector_size = (sizeof (struct blockvector) | |
678 | + (actual_nblocks - 1) * sizeof (struct block *)); | |
224c3ddb SM |
679 | bv = (struct blockvector *) obstack_alloc (&objfile->objfile_obstack, |
680 | blockvector_size); | |
43f3e411 | 681 | COMPUNIT_BLOCKVECTOR (cust) = bv; |
1825a88d SD |
682 | |
683 | /* (begin, end) will contain the PC range this entire blockvector | |
684 | spans. */ | |
346d1dfe | 685 | BLOCKVECTOR_MAP (bv) = NULL; |
1825a88d SD |
686 | begin = stab->blocks->begin; |
687 | end = stab->blocks->end; | |
346d1dfe | 688 | BLOCKVECTOR_NBLOCKS (bv) = actual_nblocks; |
1825a88d SD |
689 | |
690 | /* First run over all the gdb_block objects, creating a real block | |
691 | object for each. Simultaneously, keep setting the real_block | |
692 | fields. */ | |
693 | for (i = (actual_nblocks - 1), gdb_block_iter = stab->blocks; | |
694 | i >= FIRST_LOCAL_BLOCK; | |
695 | i--, gdb_block_iter = gdb_block_iter->next) | |
696 | { | |
697 | struct block *new_block = allocate_block (&objfile->objfile_obstack); | |
e623cf5d | 698 | struct symbol *block_name = allocate_symbol (objfile); |
2535757a TT |
699 | struct type *block_type = arch_type (get_objfile_arch (objfile), |
700 | TYPE_CODE_VOID, | |
701 | 1, | |
702 | "void"); | |
1825a88d SD |
703 | |
704 | BLOCK_DICT (new_block) = dict_create_linear (&objfile->objfile_obstack, | |
705 | NULL); | |
706 | /* The address range. */ | |
707 | BLOCK_START (new_block) = (CORE_ADDR) gdb_block_iter->begin; | |
708 | BLOCK_END (new_block) = (CORE_ADDR) gdb_block_iter->end; | |
709 | ||
710 | /* The name. */ | |
1825a88d | 711 | SYMBOL_DOMAIN (block_name) = VAR_DOMAIN; |
f1e6e072 | 712 | SYMBOL_ACLASS_INDEX (block_name) = LOC_BLOCK; |
08be3fe3 | 713 | symbol_set_symtab (block_name, COMPUNIT_FILETABS (cust)); |
2535757a | 714 | SYMBOL_TYPE (block_name) = lookup_function_type (block_type); |
1825a88d SD |
715 | SYMBOL_BLOCK_VALUE (block_name) = new_block; |
716 | ||
224c3ddb SM |
717 | block_name->ginfo.name |
718 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
719 | gdb_block_iter->name, | |
720 | strlen (gdb_block_iter->name)); | |
1825a88d SD |
721 | |
722 | BLOCK_FUNCTION (new_block) = block_name; | |
723 | ||
346d1dfe | 724 | BLOCKVECTOR_BLOCK (bv, i) = new_block; |
1825a88d SD |
725 | if (begin > BLOCK_START (new_block)) |
726 | begin = BLOCK_START (new_block); | |
727 | if (end < BLOCK_END (new_block)) | |
728 | end = BLOCK_END (new_block); | |
729 | ||
730 | gdb_block_iter->real_block = new_block; | |
731 | } | |
732 | ||
733 | /* Now add the special blocks. */ | |
734 | block_iter = NULL; | |
735 | for (i = 0; i < FIRST_LOCAL_BLOCK; i++) | |
736 | { | |
84a146c9 TT |
737 | struct block *new_block; |
738 | ||
739 | new_block = (i == GLOBAL_BLOCK | |
740 | ? allocate_global_block (&objfile->objfile_obstack) | |
741 | : allocate_block (&objfile->objfile_obstack)); | |
1825a88d SD |
742 | BLOCK_DICT (new_block) = dict_create_linear (&objfile->objfile_obstack, |
743 | NULL); | |
744 | BLOCK_SUPERBLOCK (new_block) = block_iter; | |
745 | block_iter = new_block; | |
746 | ||
747 | BLOCK_START (new_block) = (CORE_ADDR) begin; | |
748 | BLOCK_END (new_block) = (CORE_ADDR) end; | |
749 | ||
346d1dfe | 750 | BLOCKVECTOR_BLOCK (bv, i) = new_block; |
84a146c9 TT |
751 | |
752 | if (i == GLOBAL_BLOCK) | |
43f3e411 | 753 | set_block_compunit_symtab (new_block, cust); |
1825a88d SD |
754 | } |
755 | ||
756 | /* Fill up the superblock fields for the real blocks, using the | |
757 | real_block fields populated earlier. */ | |
758 | for (gdb_block_iter = stab->blocks; | |
759 | gdb_block_iter; | |
760 | gdb_block_iter = gdb_block_iter->next) | |
761 | { | |
762 | if (gdb_block_iter->parent != NULL) | |
db334a01 SD |
763 | { |
764 | /* If the plugin specifically mentioned a parent block, we | |
765 | use that. */ | |
766 | BLOCK_SUPERBLOCK (gdb_block_iter->real_block) = | |
767 | gdb_block_iter->parent->real_block; | |
768 | } | |
769 | else | |
770 | { | |
771 | /* And if not, we set a default parent block. */ | |
772 | BLOCK_SUPERBLOCK (gdb_block_iter->real_block) = | |
346d1dfe | 773 | BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
db334a01 | 774 | } |
1825a88d SD |
775 | } |
776 | ||
777 | /* Free memory. */ | |
778 | gdb_block_iter = stab->blocks; | |
779 | ||
780 | for (gdb_block_iter = stab->blocks, gdb_block_iter_tmp = gdb_block_iter->next; | |
781 | gdb_block_iter; | |
782 | gdb_block_iter = gdb_block_iter_tmp) | |
783 | { | |
784 | xfree ((void *) gdb_block_iter->name); | |
785 | xfree (gdb_block_iter); | |
786 | } | |
787 | xfree (stab->linetable); | |
788 | xfree ((char *) stab->file_name); | |
789 | xfree (stab); | |
790 | } | |
791 | ||
792 | /* Called when closing a gdb_objfile. Converts OBJ to a proper | |
793 | objfile. */ | |
794 | ||
795 | static void | |
796 | jit_object_close_impl (struct gdb_symbol_callbacks *cb, | |
797 | struct gdb_object *obj) | |
798 | { | |
799 | struct gdb_symtab *i, *j; | |
800 | struct objfile *objfile; | |
801 | jit_dbg_reader_data *priv_data; | |
802 | ||
9a3c8263 | 803 | priv_data = (jit_dbg_reader_data *) cb->priv_data; |
1825a88d | 804 | |
40135bb1 JK |
805 | objfile = allocate_objfile (NULL, "<< JIT compiled code >>", |
806 | OBJF_NOT_FILENAME); | |
df6d5441 | 807 | objfile->per_bfd->gdbarch = target_gdbarch (); |
1825a88d | 808 | |
a5bd37c3 | 809 | terminate_minimal_symbol_table (objfile); |
1825a88d | 810 | |
1825a88d SD |
811 | j = NULL; |
812 | for (i = obj->symtabs; i; i = j) | |
813 | { | |
814 | j = i->next; | |
815 | finalize_symtab (i, objfile); | |
816 | } | |
817 | add_objfile_entry (objfile, *priv_data); | |
818 | xfree (obj); | |
819 | } | |
820 | ||
744ab88c | 821 | /* Try to read CODE_ENTRY using the loaded jit reader (if any). |
b4264740 SD |
822 | ENTRY_ADDR is the address of the struct jit_code_entry in the |
823 | inferior address space. */ | |
1825a88d SD |
824 | |
825 | static int | |
744ab88c SD |
826 | jit_reader_try_read_symtab (struct jit_code_entry *code_entry, |
827 | CORE_ADDR entry_addr) | |
1825a88d | 828 | { |
7c543f7b | 829 | gdb_byte *gdb_mem; |
1825a88d | 830 | int status; |
1825a88d SD |
831 | jit_dbg_reader_data priv_data; |
832 | struct gdb_reader_funcs *funcs; | |
1825a88d SD |
833 | struct gdb_symbol_callbacks callbacks = |
834 | { | |
835 | jit_object_open_impl, | |
836 | jit_symtab_open_impl, | |
837 | jit_block_open_impl, | |
838 | jit_symtab_close_impl, | |
839 | jit_object_close_impl, | |
840 | ||
841 | jit_symtab_line_mapping_add_impl, | |
842 | jit_target_read_impl, | |
843 | ||
844 | &priv_data | |
845 | }; | |
846 | ||
744ab88c | 847 | priv_data = entry_addr; |
1825a88d SD |
848 | |
849 | if (!loaded_jit_reader) | |
850 | return 0; | |
851 | ||
7c543f7b | 852 | gdb_mem = (gdb_byte *) xmalloc (code_entry->symfile_size); |
1825a88d SD |
853 | |
854 | status = 1; | |
492d29ea PA |
855 | TRY |
856 | { | |
857 | if (target_read_memory (code_entry->symfile_addr, gdb_mem, | |
858 | code_entry->symfile_size)) | |
859 | status = 0; | |
860 | } | |
861 | CATCH (e, RETURN_MASK_ALL) | |
862 | { | |
1825a88d | 863 | status = 0; |
492d29ea PA |
864 | } |
865 | END_CATCH | |
1825a88d SD |
866 | |
867 | if (status) | |
868 | { | |
869 | funcs = loaded_jit_reader->functions; | |
870 | if (funcs->read (funcs, &callbacks, gdb_mem, code_entry->symfile_size) | |
871 | != GDB_SUCCESS) | |
872 | status = 0; | |
873 | } | |
874 | ||
875 | xfree (gdb_mem); | |
876 | if (jit_debug && status == 0) | |
877 | fprintf_unfiltered (gdb_stdlog, | |
878 | "Could not read symtab using the loaded JIT reader.\n"); | |
879 | return status; | |
880 | } | |
881 | ||
744ab88c | 882 | /* Try to read CODE_ENTRY using BFD. ENTRY_ADDR is the address of the |
b4264740 | 883 | struct jit_code_entry in the inferior address space. */ |
1825a88d SD |
884 | |
885 | static void | |
886 | jit_bfd_try_read_symtab (struct jit_code_entry *code_entry, | |
744ab88c | 887 | CORE_ADDR entry_addr, |
1825a88d | 888 | struct gdbarch *gdbarch) |
4efc6507 | 889 | { |
4efc6507 DE |
890 | struct section_addr_info *sai; |
891 | struct bfd_section *sec; | |
892 | struct objfile *objfile; | |
4dfb2365 | 893 | struct cleanup *old_cleanups; |
4efc6507 DE |
894 | int i; |
895 | const struct bfd_arch_info *b; | |
4efc6507 | 896 | |
a255712f PP |
897 | if (jit_debug) |
898 | fprintf_unfiltered (gdb_stdlog, | |
899 | "jit_register_code, symfile_addr = %s, " | |
900 | "symfile_size = %s\n", | |
901 | paddress (gdbarch, code_entry->symfile_addr), | |
902 | pulongest (code_entry->symfile_size)); | |
903 | ||
192b62ce TT |
904 | gdb_bfd_ref_ptr nbfd (bfd_open_from_target_memory (code_entry->symfile_addr, |
905 | code_entry->symfile_size, | |
906 | gnutarget)); | |
4dfb2365 JK |
907 | if (nbfd == NULL) |
908 | { | |
909 | puts_unfiltered (_("Error opening JITed symbol file, ignoring it.\n")); | |
910 | return; | |
911 | } | |
4efc6507 DE |
912 | |
913 | /* Check the format. NOTE: This initializes important data that GDB uses! | |
914 | We would segfault later without this line. */ | |
192b62ce | 915 | if (!bfd_check_format (nbfd.get (), bfd_object)) |
4efc6507 DE |
916 | { |
917 | printf_unfiltered (_("\ | |
918 | JITed symbol file is not an object file, ignoring it.\n")); | |
4efc6507 DE |
919 | return; |
920 | } | |
921 | ||
922 | /* Check bfd arch. */ | |
0756c555 | 923 | b = gdbarch_bfd_arch_info (gdbarch); |
192b62ce | 924 | if (b->compatible (b, bfd_get_arch_info (nbfd.get ())) != b) |
4efc6507 | 925 | warning (_("JITed object file architecture %s is not compatible " |
192b62ce TT |
926 | "with target architecture %s."), |
927 | bfd_get_arch_info (nbfd.get ())->printable_name, | |
928 | b->printable_name); | |
4efc6507 DE |
929 | |
930 | /* Read the section address information out of the symbol file. Since the | |
931 | file is generated by the JIT at runtime, it should all of the absolute | |
932 | addresses that we care about. */ | |
192b62ce | 933 | sai = alloc_section_addr_info (bfd_count_sections (nbfd.get ())); |
4dfb2365 | 934 | old_cleanups = make_cleanup_free_section_addr_info (sai); |
4efc6507 DE |
935 | i = 0; |
936 | for (sec = nbfd->sections; sec != NULL; sec = sec->next) | |
192b62ce | 937 | if ((bfd_get_section_flags (nbfd.get (), sec) & (SEC_ALLOC|SEC_LOAD)) != 0) |
4efc6507 DE |
938 | { |
939 | /* We assume that these virtual addresses are absolute, and do not | |
940 | treat them as offsets. */ | |
192b62ce TT |
941 | sai->other[i].addr = bfd_get_section_vma (nbfd.get (), sec); |
942 | sai->other[i].name = xstrdup (bfd_get_section_name (nbfd.get (), sec)); | |
4efc6507 DE |
943 | sai->other[i].sectindex = sec->index; |
944 | ++i; | |
945 | } | |
d76488d8 | 946 | sai->num_sections = i; |
4efc6507 | 947 | |
8ac244b4 | 948 | /* This call does not take ownership of SAI. */ |
192b62ce TT |
949 | objfile = symbol_file_add_from_bfd (nbfd.get (), |
950 | bfd_get_filename (nbfd.get ()), 0, sai, | |
40135bb1 | 951 | OBJF_SHARED | OBJF_NOT_FILENAME, NULL); |
4efc6507 | 952 | |
4dfb2365 | 953 | do_cleanups (old_cleanups); |
744ab88c | 954 | add_objfile_entry (objfile, entry_addr); |
1825a88d SD |
955 | } |
956 | ||
957 | /* This function registers code associated with a JIT code entry. It uses the | |
958 | pointer and size pair in the entry to read the symbol file from the remote | |
959 | and then calls symbol_file_add_from_local_memory to add it as though it were | |
960 | a symbol file added by the user. */ | |
961 | ||
962 | static void | |
963 | jit_register_code (struct gdbarch *gdbarch, | |
964 | CORE_ADDR entry_addr, struct jit_code_entry *code_entry) | |
965 | { | |
974a734b | 966 | int success; |
1825a88d SD |
967 | |
968 | if (jit_debug) | |
969 | fprintf_unfiltered (gdb_stdlog, | |
970 | "jit_register_code, symfile_addr = %s, " | |
971 | "symfile_size = %s\n", | |
972 | paddress (gdbarch, code_entry->symfile_addr), | |
973 | pulongest (code_entry->symfile_size)); | |
974 | ||
744ab88c | 975 | success = jit_reader_try_read_symtab (code_entry, entry_addr); |
1825a88d SD |
976 | |
977 | if (!success) | |
744ab88c | 978 | jit_bfd_try_read_symtab (code_entry, entry_addr, gdbarch); |
4efc6507 DE |
979 | } |
980 | ||
1777feb0 MS |
981 | /* This function unregisters JITed code and frees the corresponding |
982 | objfile. */ | |
4efc6507 DE |
983 | |
984 | static void | |
985 | jit_unregister_code (struct objfile *objfile) | |
986 | { | |
987 | free_objfile (objfile); | |
988 | } | |
989 | ||
990 | /* Look up the objfile with this code entry address. */ | |
991 | ||
992 | static struct objfile * | |
993 | jit_find_objf_with_entry_addr (CORE_ADDR entry_addr) | |
994 | { | |
995 | struct objfile *objf; | |
4efc6507 DE |
996 | |
997 | ALL_OBJFILES (objf) | |
998 | { | |
03bef283 TT |
999 | struct jit_objfile_data *objf_data; |
1000 | ||
9a3c8263 SM |
1001 | objf_data |
1002 | = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data); | |
03bef283 | 1003 | if (objf_data != NULL && objf_data->addr == entry_addr) |
4efc6507 DE |
1004 | return objf; |
1005 | } | |
1006 | return NULL; | |
1007 | } | |
1008 | ||
f25c0135 TT |
1009 | /* This is called when a breakpoint is deleted. It updates the |
1010 | inferior's cache, if needed. */ | |
1011 | ||
1012 | static void | |
1013 | jit_breakpoint_deleted (struct breakpoint *b) | |
1014 | { | |
1015 | struct bp_location *iter; | |
1016 | ||
1017 | if (b->type != bp_jit_event) | |
1018 | return; | |
1019 | ||
1020 | for (iter = b->loc; iter != NULL; iter = iter->next) | |
8eacb197 TT |
1021 | { |
1022 | struct jit_program_space_data *ps_data; | |
1023 | ||
9a3c8263 SM |
1024 | ps_data = ((struct jit_program_space_data *) |
1025 | program_space_data (iter->pspace, jit_program_space_data)); | |
8eacb197 TT |
1026 | if (ps_data != NULL && ps_data->jit_breakpoint == iter->owner) |
1027 | { | |
1028 | ps_data->cached_code_address = 0; | |
1029 | ps_data->jit_breakpoint = NULL; | |
1030 | } | |
1031 | } | |
f25c0135 TT |
1032 | } |
1033 | ||
03673fc7 | 1034 | /* (Re-)Initialize the jit breakpoint if necessary. |
9bb84c9f | 1035 | Return 0 if the jit breakpoint has been successfully initialized. */ |
03673fc7 PP |
1036 | |
1037 | static int | |
1038 | jit_breakpoint_re_set_internal (struct gdbarch *gdbarch, | |
8eacb197 | 1039 | struct jit_program_space_data *ps_data) |
03673fc7 | 1040 | { |
7cbd4a93 | 1041 | struct bound_minimal_symbol reg_symbol; |
3b7344d5 | 1042 | struct bound_minimal_symbol desc_symbol; |
03bef283 | 1043 | struct jit_objfile_data *objf_data; |
f25c0135 | 1044 | CORE_ADDR addr; |
03bef283 | 1045 | |
8eacb197 | 1046 | if (ps_data->objfile == NULL) |
f25c0135 TT |
1047 | { |
1048 | /* Lookup the registration symbol. If it is missing, then we | |
1049 | assume we are not attached to a JIT. */ | |
7cbd4a93 TT |
1050 | reg_symbol = lookup_minimal_symbol_and_objfile (jit_break_name); |
1051 | if (reg_symbol.minsym == NULL | |
77e371c0 | 1052 | || BMSYMBOL_VALUE_ADDRESS (reg_symbol) == 0) |
f25c0135 | 1053 | return 1; |
03bef283 | 1054 | |
7cbd4a93 TT |
1055 | desc_symbol = lookup_minimal_symbol (jit_descriptor_name, NULL, |
1056 | reg_symbol.objfile); | |
3b7344d5 | 1057 | if (desc_symbol.minsym == NULL |
77e371c0 | 1058 | || BMSYMBOL_VALUE_ADDRESS (desc_symbol) == 0) |
f25c0135 | 1059 | return 1; |
03bef283 | 1060 | |
7cbd4a93 TT |
1061 | objf_data = get_jit_objfile_data (reg_symbol.objfile); |
1062 | objf_data->register_code = reg_symbol.minsym; | |
3b7344d5 | 1063 | objf_data->descriptor = desc_symbol.minsym; |
03bef283 | 1064 | |
7cbd4a93 | 1065 | ps_data->objfile = reg_symbol.objfile; |
f25c0135 TT |
1066 | } |
1067 | else | |
8eacb197 | 1068 | objf_data = get_jit_objfile_data (ps_data->objfile); |
03bef283 | 1069 | |
77e371c0 | 1070 | addr = MSYMBOL_VALUE_ADDRESS (ps_data->objfile, objf_data->register_code); |
03bef283 | 1071 | |
03673fc7 PP |
1072 | if (jit_debug) |
1073 | fprintf_unfiltered (gdb_stdlog, | |
1074 | "jit_breakpoint_re_set_internal, " | |
1075 | "breakpoint_addr = %s\n", | |
f25c0135 TT |
1076 | paddress (gdbarch, addr)); |
1077 | ||
8eacb197 | 1078 | if (ps_data->cached_code_address == addr) |
9bb84c9f | 1079 | return 0; |
f25c0135 TT |
1080 | |
1081 | /* Delete the old breakpoint. */ | |
8eacb197 TT |
1082 | if (ps_data->jit_breakpoint != NULL) |
1083 | delete_breakpoint (ps_data->jit_breakpoint); | |
03673fc7 PP |
1084 | |
1085 | /* Put a breakpoint in the registration symbol. */ | |
8eacb197 TT |
1086 | ps_data->cached_code_address = addr; |
1087 | ps_data->jit_breakpoint = create_jit_event_breakpoint (gdbarch, addr); | |
03673fc7 PP |
1088 | |
1089 | return 0; | |
1090 | } | |
1091 | ||
3623dc3a SD |
1092 | /* The private data passed around in the frame unwind callback |
1093 | functions. */ | |
1094 | ||
1095 | struct jit_unwind_private | |
1096 | { | |
1097 | /* Cached register values. See jit_frame_sniffer to see how this | |
1098 | works. */ | |
20aa2c60 | 1099 | struct regcache *regcache; |
3623dc3a SD |
1100 | |
1101 | /* The frame being unwound. */ | |
1102 | struct frame_info *this_frame; | |
1103 | }; | |
1104 | ||
1105 | /* Sets the value of a particular register in this frame. */ | |
1106 | ||
1107 | static void | |
1108 | jit_unwind_reg_set_impl (struct gdb_unwind_callbacks *cb, int dwarf_regnum, | |
1109 | struct gdb_reg_value *value) | |
1110 | { | |
1111 | struct jit_unwind_private *priv; | |
1112 | int gdb_reg; | |
1113 | ||
9a3c8263 | 1114 | priv = (struct jit_unwind_private *) cb->priv_data; |
3623dc3a SD |
1115 | |
1116 | gdb_reg = gdbarch_dwarf2_reg_to_regnum (get_frame_arch (priv->this_frame), | |
1117 | dwarf_regnum); | |
1118 | if (gdb_reg == -1) | |
1119 | { | |
1120 | if (jit_debug) | |
1121 | fprintf_unfiltered (gdb_stdlog, | |
1122 | _("Could not recognize DWARF regnum %d"), | |
1123 | dwarf_regnum); | |
20aa2c60 | 1124 | value->free (value); |
3623dc3a SD |
1125 | return; |
1126 | } | |
1127 | ||
20aa2c60 PA |
1128 | regcache_raw_set_cached_value (priv->regcache, gdb_reg, value->value); |
1129 | value->free (value); | |
3623dc3a SD |
1130 | } |
1131 | ||
1132 | static void | |
1133 | reg_value_free_impl (struct gdb_reg_value *value) | |
1134 | { | |
1135 | xfree (value); | |
1136 | } | |
1137 | ||
1138 | /* Get the value of register REGNUM in the previous frame. */ | |
1139 | ||
1140 | static struct gdb_reg_value * | |
1141 | jit_unwind_reg_get_impl (struct gdb_unwind_callbacks *cb, int regnum) | |
1142 | { | |
1143 | struct jit_unwind_private *priv; | |
1144 | struct gdb_reg_value *value; | |
1145 | int gdb_reg, size; | |
1146 | struct gdbarch *frame_arch; | |
1147 | ||
9a3c8263 | 1148 | priv = (struct jit_unwind_private *) cb->priv_data; |
3623dc3a SD |
1149 | frame_arch = get_frame_arch (priv->this_frame); |
1150 | ||
1151 | gdb_reg = gdbarch_dwarf2_reg_to_regnum (frame_arch, regnum); | |
1152 | size = register_size (frame_arch, gdb_reg); | |
224c3ddb SM |
1153 | value = ((struct gdb_reg_value *) |
1154 | xmalloc (sizeof (struct gdb_reg_value) + size - 1)); | |
ca9d61b9 JB |
1155 | value->defined = deprecated_frame_register_read (priv->this_frame, gdb_reg, |
1156 | value->value); | |
3623dc3a SD |
1157 | value->size = size; |
1158 | value->free = reg_value_free_impl; | |
1159 | return value; | |
1160 | } | |
1161 | ||
1162 | /* gdb_reg_value has a free function, which must be called on each | |
1163 | saved register value. */ | |
1164 | ||
1165 | static void | |
1166 | jit_dealloc_cache (struct frame_info *this_frame, void *cache) | |
1167 | { | |
9a3c8263 | 1168 | struct jit_unwind_private *priv_data = (struct jit_unwind_private *) cache; |
3623dc3a | 1169 | |
20aa2c60 | 1170 | gdb_assert (priv_data->regcache != NULL); |
20aa2c60 | 1171 | regcache_xfree (priv_data->regcache); |
3623dc3a SD |
1172 | xfree (priv_data); |
1173 | } | |
1174 | ||
1175 | /* The frame sniffer for the pseudo unwinder. | |
1176 | ||
1177 | While this is nominally a frame sniffer, in the case where the JIT | |
1178 | reader actually recognizes the frame, it does a lot more work -- it | |
1179 | unwinds the frame and saves the corresponding register values in | |
1180 | the cache. jit_frame_prev_register simply returns the saved | |
1181 | register values. */ | |
1182 | ||
1183 | static int | |
1184 | jit_frame_sniffer (const struct frame_unwind *self, | |
1185 | struct frame_info *this_frame, void **cache) | |
1186 | { | |
3623dc3a | 1187 | struct jit_unwind_private *priv_data; |
3623dc3a SD |
1188 | struct gdb_unwind_callbacks callbacks; |
1189 | struct gdb_reader_funcs *funcs; | |
20aa2c60 PA |
1190 | struct address_space *aspace; |
1191 | struct gdbarch *gdbarch; | |
3623dc3a | 1192 | |
3623dc3a SD |
1193 | callbacks.reg_get = jit_unwind_reg_get_impl; |
1194 | callbacks.reg_set = jit_unwind_reg_set_impl; | |
1195 | callbacks.target_read = jit_target_read_impl; | |
1196 | ||
1197 | if (loaded_jit_reader == NULL) | |
1198 | return 0; | |
1199 | ||
1200 | funcs = loaded_jit_reader->functions; | |
1201 | ||
1202 | gdb_assert (!*cache); | |
1203 | ||
20aa2c60 PA |
1204 | aspace = get_frame_address_space (this_frame); |
1205 | gdbarch = get_frame_arch (this_frame); | |
1206 | ||
41bf6aca | 1207 | *cache = XCNEW (struct jit_unwind_private); |
9a3c8263 | 1208 | priv_data = (struct jit_unwind_private *) *cache; |
20aa2c60 | 1209 | priv_data->regcache = regcache_xmalloc (gdbarch, aspace); |
3623dc3a SD |
1210 | priv_data->this_frame = this_frame; |
1211 | ||
1212 | callbacks.priv_data = priv_data; | |
1213 | ||
1214 | /* Try to coax the provided unwinder to unwind the stack */ | |
1215 | if (funcs->unwind (funcs, &callbacks) == GDB_SUCCESS) | |
1216 | { | |
1217 | if (jit_debug) | |
1218 | fprintf_unfiltered (gdb_stdlog, _("Successfully unwound frame using " | |
1219 | "JIT reader.\n")); | |
1220 | return 1; | |
1221 | } | |
1222 | if (jit_debug) | |
1223 | fprintf_unfiltered (gdb_stdlog, _("Could not unwind frame using " | |
1224 | "JIT reader.\n")); | |
1225 | ||
1226 | jit_dealloc_cache (this_frame, *cache); | |
1227 | *cache = NULL; | |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
1232 | ||
1233 | /* The frame_id function for the pseudo unwinder. Relays the call to | |
1234 | the loaded plugin. */ | |
1235 | ||
1236 | static void | |
1237 | jit_frame_this_id (struct frame_info *this_frame, void **cache, | |
1238 | struct frame_id *this_id) | |
1239 | { | |
fe978cb0 | 1240 | struct jit_unwind_private priv; |
3623dc3a SD |
1241 | struct gdb_frame_id frame_id; |
1242 | struct gdb_reader_funcs *funcs; | |
1243 | struct gdb_unwind_callbacks callbacks; | |
1244 | ||
20aa2c60 | 1245 | priv.regcache = NULL; |
fe978cb0 | 1246 | priv.this_frame = this_frame; |
3623dc3a SD |
1247 | |
1248 | /* We don't expect the frame_id function to set any registers, so we | |
1249 | set reg_set to NULL. */ | |
1250 | callbacks.reg_get = jit_unwind_reg_get_impl; | |
1251 | callbacks.reg_set = NULL; | |
1252 | callbacks.target_read = jit_target_read_impl; | |
fe978cb0 | 1253 | callbacks.priv_data = &priv; |
3623dc3a SD |
1254 | |
1255 | gdb_assert (loaded_jit_reader); | |
1256 | funcs = loaded_jit_reader->functions; | |
1257 | ||
1258 | frame_id = funcs->get_frame_id (funcs, &callbacks); | |
1259 | *this_id = frame_id_build (frame_id.stack_address, frame_id.code_address); | |
1260 | } | |
1261 | ||
1262 | /* Pseudo unwinder function. Reads the previously fetched value for | |
1263 | the register from the cache. */ | |
1264 | ||
1265 | static struct value * | |
1266 | jit_frame_prev_register (struct frame_info *this_frame, void **cache, int reg) | |
1267 | { | |
9a3c8263 | 1268 | struct jit_unwind_private *priv = (struct jit_unwind_private *) *cache; |
20aa2c60 | 1269 | struct gdbarch *gdbarch; |
3623dc3a SD |
1270 | |
1271 | if (priv == NULL) | |
1272 | return frame_unwind_got_optimized (this_frame, reg); | |
1273 | ||
20aa2c60 PA |
1274 | gdbarch = get_regcache_arch (priv->regcache); |
1275 | if (reg < gdbarch_num_regs (gdbarch)) | |
1276 | { | |
1277 | gdb_byte *buf = (gdb_byte *) alloca (register_size (gdbarch, reg)); | |
1278 | enum register_status status; | |
1279 | ||
1280 | status = regcache_raw_read (priv->regcache, reg, buf); | |
1281 | if (status == REG_VALID) | |
1282 | return frame_unwind_got_bytes (this_frame, reg, buf); | |
1283 | else | |
1284 | return frame_unwind_got_optimized (this_frame, reg); | |
1285 | } | |
3623dc3a | 1286 | else |
20aa2c60 | 1287 | return gdbarch_pseudo_register_read_value (gdbarch, priv->regcache, reg); |
3623dc3a SD |
1288 | } |
1289 | ||
1290 | /* Relay everything back to the unwinder registered by the JIT debug | |
1291 | info reader.*/ | |
1292 | ||
1293 | static const struct frame_unwind jit_frame_unwind = | |
1294 | { | |
1295 | NORMAL_FRAME, | |
1296 | default_frame_unwind_stop_reason, | |
1297 | jit_frame_this_id, | |
1298 | jit_frame_prev_register, | |
1299 | NULL, | |
1300 | jit_frame_sniffer, | |
1301 | jit_dealloc_cache | |
1302 | }; | |
1303 | ||
1304 | ||
1305 | /* This is the information that is stored at jit_gdbarch_data for each | |
1306 | architecture. */ | |
1307 | ||
1308 | struct jit_gdbarch_data_type | |
1309 | { | |
1310 | /* Has the (pseudo) unwinder been prepended? */ | |
1311 | int unwinder_registered; | |
1312 | }; | |
1313 | ||
1314 | /* Check GDBARCH and prepend the pseudo JIT unwinder if needed. */ | |
1315 | ||
1316 | static void | |
1317 | jit_prepend_unwinder (struct gdbarch *gdbarch) | |
1318 | { | |
1319 | struct jit_gdbarch_data_type *data; | |
1320 | ||
9a3c8263 SM |
1321 | data |
1322 | = (struct jit_gdbarch_data_type *) gdbarch_data (gdbarch, jit_gdbarch_data); | |
3623dc3a SD |
1323 | if (!data->unwinder_registered) |
1324 | { | |
1325 | frame_unwind_prepend_unwinder (gdbarch, &jit_frame_unwind); | |
1326 | data->unwinder_registered = 1; | |
1327 | } | |
1328 | } | |
1329 | ||
03673fc7 | 1330 | /* Register any already created translations. */ |
0756c555 DE |
1331 | |
1332 | static void | |
1333 | jit_inferior_init (struct gdbarch *gdbarch) | |
4efc6507 | 1334 | { |
4efc6507 DE |
1335 | struct jit_descriptor descriptor; |
1336 | struct jit_code_entry cur_entry; | |
8eacb197 | 1337 | struct jit_program_space_data *ps_data; |
4efc6507 | 1338 | CORE_ADDR cur_entry_addr; |
4efc6507 | 1339 | |
a255712f | 1340 | if (jit_debug) |
03673fc7 | 1341 | fprintf_unfiltered (gdb_stdlog, "jit_inferior_init\n"); |
a255712f | 1342 | |
3623dc3a SD |
1343 | jit_prepend_unwinder (gdbarch); |
1344 | ||
8eacb197 TT |
1345 | ps_data = get_jit_program_space_data (); |
1346 | if (jit_breakpoint_re_set_internal (gdbarch, ps_data) != 0) | |
4efc6507 DE |
1347 | return; |
1348 | ||
1777feb0 MS |
1349 | /* Read the descriptor so we can check the version number and load |
1350 | any already JITed functions. */ | |
8eacb197 | 1351 | if (!jit_read_descriptor (gdbarch, &descriptor, ps_data)) |
03bef283 | 1352 | return; |
4efc6507 DE |
1353 | |
1354 | /* Check that the version number agrees with that we support. */ | |
1355 | if (descriptor.version != 1) | |
03bef283 TT |
1356 | { |
1357 | printf_unfiltered (_("Unsupported JIT protocol version %ld " | |
1358 | "in descriptor (expected 1)\n"), | |
1359 | (long) descriptor.version); | |
1360 | return; | |
1361 | } | |
4efc6507 | 1362 | |
1777feb0 MS |
1363 | /* If we've attached to a running program, we need to check the descriptor |
1364 | to register any functions that were already generated. */ | |
4efc6507 DE |
1365 | for (cur_entry_addr = descriptor.first_entry; |
1366 | cur_entry_addr != 0; | |
1367 | cur_entry_addr = cur_entry.next_entry) | |
1368 | { | |
0756c555 | 1369 | jit_read_code_entry (gdbarch, cur_entry_addr, &cur_entry); |
4efc6507 DE |
1370 | |
1371 | /* This hook may be called many times during setup, so make sure we don't | |
1372 | add the same symbol file twice. */ | |
1373 | if (jit_find_objf_with_entry_addr (cur_entry_addr) != NULL) | |
1374 | continue; | |
1375 | ||
0756c555 | 1376 | jit_register_code (gdbarch, cur_entry_addr, &cur_entry); |
4efc6507 DE |
1377 | } |
1378 | } | |
1379 | ||
9bb84c9f YY |
1380 | /* inferior_created observer. */ |
1381 | ||
1382 | static void | |
1383 | jit_inferior_created (struct target_ops *ops, int from_tty) | |
1384 | { | |
1385 | jit_inferior_created_hook (); | |
1386 | } | |
1387 | ||
0756c555 DE |
1388 | /* Exported routine to call when an inferior has been created. */ |
1389 | ||
1390 | void | |
1391 | jit_inferior_created_hook (void) | |
1392 | { | |
f5656ead | 1393 | jit_inferior_init (target_gdbarch ()); |
0756c555 DE |
1394 | } |
1395 | ||
1396 | /* Exported routine to call to re-set the jit breakpoints, | |
1397 | e.g. when a program is rerun. */ | |
1398 | ||
1399 | void | |
1400 | jit_breakpoint_re_set (void) | |
1401 | { | |
f5656ead | 1402 | jit_breakpoint_re_set_internal (target_gdbarch (), |
8eacb197 | 1403 | get_jit_program_space_data ()); |
03673fc7 PP |
1404 | } |
1405 | ||
1777feb0 MS |
1406 | /* This function cleans up any code entries left over when the |
1407 | inferior exits. We get left over code when the inferior exits | |
1408 | without unregistering its code, for example when it crashes. */ | |
4efc6507 DE |
1409 | |
1410 | static void | |
a79b8f6e | 1411 | jit_inferior_exit_hook (struct inferior *inf) |
4efc6507 DE |
1412 | { |
1413 | struct objfile *objf; | |
1414 | struct objfile *temp; | |
1415 | ||
4efc6507 | 1416 | ALL_OBJFILES_SAFE (objf, temp) |
03bef283 | 1417 | { |
9a3c8263 SM |
1418 | struct jit_objfile_data *objf_data |
1419 | = (struct jit_objfile_data *) objfile_data (objf, jit_objfile_data); | |
4efc6507 | 1420 | |
03bef283 TT |
1421 | if (objf_data != NULL && objf_data->addr != 0) |
1422 | jit_unregister_code (objf); | |
1423 | } | |
03673fc7 PP |
1424 | } |
1425 | ||
4efc6507 | 1426 | void |
0756c555 | 1427 | jit_event_handler (struct gdbarch *gdbarch) |
4efc6507 DE |
1428 | { |
1429 | struct jit_descriptor descriptor; | |
1430 | struct jit_code_entry code_entry; | |
1431 | CORE_ADDR entry_addr; | |
1432 | struct objfile *objf; | |
1433 | ||
1434 | /* Read the descriptor from remote memory. */ | |
8eacb197 TT |
1435 | if (!jit_read_descriptor (gdbarch, &descriptor, |
1436 | get_jit_program_space_data ())) | |
03bef283 | 1437 | return; |
4efc6507 DE |
1438 | entry_addr = descriptor.relevant_entry; |
1439 | ||
1777feb0 | 1440 | /* Do the corresponding action. */ |
4efc6507 DE |
1441 | switch (descriptor.action_flag) |
1442 | { | |
1443 | case JIT_NOACTION: | |
1444 | break; | |
1445 | case JIT_REGISTER: | |
0756c555 DE |
1446 | jit_read_code_entry (gdbarch, entry_addr, &code_entry); |
1447 | jit_register_code (gdbarch, entry_addr, &code_entry); | |
4efc6507 DE |
1448 | break; |
1449 | case JIT_UNREGISTER: | |
1450 | objf = jit_find_objf_with_entry_addr (entry_addr); | |
1451 | if (objf == NULL) | |
1777feb0 MS |
1452 | printf_unfiltered (_("Unable to find JITed code " |
1453 | "entry at address: %s\n"), | |
dfdbc9b4 | 1454 | paddress (gdbarch, entry_addr)); |
4efc6507 DE |
1455 | else |
1456 | jit_unregister_code (objf); | |
1457 | ||
1458 | break; | |
1459 | default: | |
1460 | error (_("Unknown action_flag value in JIT descriptor!")); | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | ||
8eacb197 | 1465 | /* Called to free the data allocated to the jit_program_space_data slot. */ |
1825a88d SD |
1466 | |
1467 | static void | |
1468 | free_objfile_data (struct objfile *objfile, void *data) | |
1469 | { | |
9a3c8263 | 1470 | struct jit_objfile_data *objf_data = (struct jit_objfile_data *) data; |
03bef283 TT |
1471 | |
1472 | if (objf_data->register_code != NULL) | |
1473 | { | |
8eacb197 | 1474 | struct jit_program_space_data *ps_data; |
03bef283 | 1475 | |
9a3c8263 SM |
1476 | ps_data |
1477 | = ((struct jit_program_space_data *) | |
1478 | program_space_data (objfile->pspace, jit_program_space_data)); | |
8eacb197 | 1479 | if (ps_data != NULL && ps_data->objfile == objfile) |
4a556533 PA |
1480 | { |
1481 | ps_data->objfile = NULL; | |
1482 | delete_breakpoint (ps_data->jit_breakpoint); | |
1483 | ps_data->cached_code_address = 0; | |
1484 | } | |
03bef283 TT |
1485 | } |
1486 | ||
1825a88d SD |
1487 | xfree (data); |
1488 | } | |
1489 | ||
3623dc3a SD |
1490 | /* Initialize the jit_gdbarch_data slot with an instance of struct |
1491 | jit_gdbarch_data_type */ | |
1492 | ||
1493 | static void * | |
1494 | jit_gdbarch_data_init (struct obstack *obstack) | |
1495 | { | |
8d749320 SM |
1496 | struct jit_gdbarch_data_type *data = |
1497 | XOBNEW (obstack, struct jit_gdbarch_data_type); | |
3623dc3a | 1498 | |
3623dc3a | 1499 | data->unwinder_registered = 0; |
8d749320 | 1500 | |
3623dc3a SD |
1501 | return data; |
1502 | } | |
1503 | ||
4efc6507 DE |
1504 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1505 | ||
1506 | extern void _initialize_jit (void); | |
1507 | ||
1508 | void | |
1509 | _initialize_jit (void) | |
1510 | { | |
b8e0a31c SD |
1511 | jit_reader_dir = relocate_gdb_directory (JIT_READER_DIR, |
1512 | JIT_READER_DIR_RELOCATABLE); | |
ccce17b0 YQ |
1513 | add_setshow_zuinteger_cmd ("jit", class_maintenance, &jit_debug, |
1514 | _("Set JIT debugging."), | |
1515 | _("Show JIT debugging."), | |
1516 | _("When non-zero, JIT debugging is enabled."), | |
1517 | NULL, | |
1518 | show_jit_debug, | |
1519 | &setdebuglist, &showdebuglist); | |
a255712f | 1520 | |
9bb84c9f | 1521 | observer_attach_inferior_created (jit_inferior_created); |
4efc6507 | 1522 | observer_attach_inferior_exit (jit_inferior_exit_hook); |
f25c0135 TT |
1523 | observer_attach_breakpoint_deleted (jit_breakpoint_deleted); |
1524 | ||
1825a88d SD |
1525 | jit_objfile_data = |
1526 | register_objfile_data_with_cleanup (NULL, free_objfile_data); | |
8eacb197 TT |
1527 | jit_program_space_data = |
1528 | register_program_space_data_with_cleanup (NULL, | |
1529 | jit_program_space_data_cleanup); | |
3623dc3a | 1530 | jit_gdbarch_data = gdbarch_data_register_pre_init (jit_gdbarch_data_init); |
784c47ee SD |
1531 | if (is_dl_available ()) |
1532 | { | |
6571a381 TT |
1533 | struct cmd_list_element *c; |
1534 | ||
1535 | c = add_com ("jit-reader-load", no_class, jit_reader_load_command, _("\ | |
784c47ee SD |
1536 | Load FILE as debug info reader and unwinder for JIT compiled code.\n\ |
1537 | Usage: jit-reader-load FILE\n\ | |
1538 | Try to load file FILE as a debug info reader (and unwinder) for\n\ | |
1539 | JIT compiled code. The file is loaded from " JIT_READER_DIR ",\n\ | |
1540 | relocated relative to the GDB executable if required.")); | |
6571a381 TT |
1541 | set_cmd_completer (c, filename_completer); |
1542 | ||
1543 | c = add_com ("jit-reader-unload", no_class, | |
1544 | jit_reader_unload_command, _("\ | |
784c47ee | 1545 | Unload the currently loaded JIT debug info reader.\n\ |
6571a381 | 1546 | Usage: jit-reader-unload\n\n\ |
784c47ee | 1547 | Do \"help jit-reader-load\" for info on loading debug info readers.")); |
6571a381 | 1548 | set_cmd_completer (c, noop_completer); |
784c47ee | 1549 | } |
4efc6507 | 1550 | } |