Commit | Line | Data |
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4efc6507 DE |
1 | /* Handle JIT code generation in the inferior for GDB, the GNU Debugger. |
2 | ||
7b6bb8da | 3 | Copyright (C) 2009, 2010, 2011 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" | |
23 | #include "breakpoint.h" | |
a255712f PP |
24 | #include "command.h" |
25 | #include "gdbcmd.h" | |
4efc6507 | 26 | #include "gdbcore.h" |
03673fc7 | 27 | #include "inferior.h" |
4efc6507 DE |
28 | #include "observer.h" |
29 | #include "objfiles.h" | |
30 | #include "symfile.h" | |
31 | #include "symtab.h" | |
32 | #include "target.h" | |
33 | #include "gdb_stat.h" | |
34 | ||
35 | static const struct objfile_data *jit_objfile_data; | |
36 | ||
37 | static const char *const jit_break_name = "__jit_debug_register_code"; | |
38 | ||
39 | static const char *const jit_descriptor_name = "__jit_debug_descriptor"; | |
40 | ||
03673fc7 | 41 | static const struct inferior_data *jit_inferior_data = NULL; |
4efc6507 | 42 | |
a255712f PP |
43 | /* Non-zero if we want to see trace of jit level stuff. */ |
44 | ||
45 | static int jit_debug = 0; | |
46 | ||
47 | static void | |
48 | show_jit_debug (struct ui_file *file, int from_tty, | |
49 | struct cmd_list_element *c, const char *value) | |
50 | { | |
51 | fprintf_filtered (file, _("JIT debugging is %s.\n"), value); | |
52 | } | |
53 | ||
4efc6507 DE |
54 | struct target_buffer |
55 | { | |
56 | CORE_ADDR base; | |
a255712f | 57 | ULONGEST size; |
4efc6507 DE |
58 | }; |
59 | ||
60 | /* Openning the file is a no-op. */ | |
61 | ||
62 | static void * | |
63 | mem_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
64 | { | |
65 | return open_closure; | |
66 | } | |
67 | ||
68 | /* Closing the file is just freeing the base/size pair on our side. */ | |
69 | ||
70 | static int | |
71 | mem_bfd_iovec_close (struct bfd *abfd, void *stream) | |
72 | { | |
73 | xfree (stream); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | /* For reading the file, we just need to pass through to target_read_memory and | |
78 | fix up the arguments and return values. */ | |
79 | ||
80 | static file_ptr | |
81 | mem_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
82 | file_ptr nbytes, file_ptr offset) | |
83 | { | |
84 | int err; | |
85 | struct target_buffer *buffer = (struct target_buffer *) stream; | |
86 | ||
87 | /* If this read will read all of the file, limit it to just the rest. */ | |
88 | if (offset + nbytes > buffer->size) | |
89 | nbytes = buffer->size - offset; | |
90 | ||
91 | /* If there are no more bytes left, we've reached EOF. */ | |
92 | if (nbytes == 0) | |
93 | return 0; | |
94 | ||
95 | err = target_read_memory (buffer->base + offset, (gdb_byte *) buf, nbytes); | |
96 | if (err) | |
97 | return -1; | |
98 | ||
99 | return nbytes; | |
100 | } | |
101 | ||
102 | /* For statting the file, we only support the st_size attribute. */ | |
103 | ||
104 | static int | |
105 | mem_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
106 | { | |
107 | struct target_buffer *buffer = (struct target_buffer*) stream; | |
108 | ||
109 | sb->st_size = buffer->size; | |
110 | return 0; | |
111 | } | |
112 | ||
113 | /* Open a BFD from the target's memory. */ | |
114 | ||
115 | static struct bfd * | |
a255712f | 116 | bfd_open_from_target_memory (CORE_ADDR addr, ULONGEST size, char *target) |
4efc6507 DE |
117 | { |
118 | const char *filename = xstrdup ("<in-memory>"); | |
119 | struct target_buffer *buffer = xmalloc (sizeof (struct target_buffer)); | |
120 | ||
121 | buffer->base = addr; | |
122 | buffer->size = size; | |
123 | return bfd_openr_iovec (filename, target, | |
124 | mem_bfd_iovec_open, | |
125 | buffer, | |
126 | mem_bfd_iovec_pread, | |
127 | mem_bfd_iovec_close, | |
128 | mem_bfd_iovec_stat); | |
129 | } | |
130 | ||
03673fc7 PP |
131 | /* Per-inferior structure recording the addresses in the inferior. */ |
132 | ||
133 | struct jit_inferior_data | |
134 | { | |
135 | CORE_ADDR breakpoint_addr; /* &__jit_debug_register_code() */ | |
136 | CORE_ADDR descriptor_addr; /* &__jit_debug_descriptor */ | |
137 | }; | |
138 | ||
139 | /* Return jit_inferior_data for current inferior. Allocate if not already | |
140 | present. */ | |
141 | ||
142 | static struct jit_inferior_data * | |
143 | get_jit_inferior_data (void) | |
144 | { | |
145 | struct inferior *inf; | |
146 | struct jit_inferior_data *inf_data; | |
147 | ||
148 | inf = current_inferior (); | |
149 | inf_data = inferior_data (inf, jit_inferior_data); | |
150 | if (inf_data == NULL) | |
151 | { | |
152 | inf_data = XZALLOC (struct jit_inferior_data); | |
153 | set_inferior_data (inf, jit_inferior_data, inf_data); | |
154 | } | |
155 | ||
156 | return inf_data; | |
157 | } | |
158 | ||
159 | static void | |
160 | jit_inferior_data_cleanup (struct inferior *inf, void *arg) | |
161 | { | |
162 | xfree (arg); | |
163 | } | |
164 | ||
1777feb0 MS |
165 | /* Helper function for reading the global JIT descriptor from remote |
166 | memory. */ | |
4efc6507 DE |
167 | |
168 | static void | |
0756c555 | 169 | jit_read_descriptor (struct gdbarch *gdbarch, |
03673fc7 PP |
170 | struct jit_descriptor *descriptor, |
171 | CORE_ADDR descriptor_addr) | |
4efc6507 DE |
172 | { |
173 | int err; | |
174 | struct type *ptr_type; | |
175 | int ptr_size; | |
176 | int desc_size; | |
177 | gdb_byte *desc_buf; | |
0756c555 | 178 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
4efc6507 DE |
179 | |
180 | /* Figure out how big the descriptor is on the remote and how to read it. */ | |
0756c555 | 181 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 DE |
182 | ptr_size = TYPE_LENGTH (ptr_type); |
183 | desc_size = 8 + 2 * ptr_size; /* Two 32-bit ints and two pointers. */ | |
184 | desc_buf = alloca (desc_size); | |
185 | ||
186 | /* Read the descriptor. */ | |
03673fc7 | 187 | err = target_read_memory (descriptor_addr, desc_buf, desc_size); |
4efc6507 DE |
188 | if (err) |
189 | error (_("Unable to read JIT descriptor from remote memory!")); | |
190 | ||
191 | /* Fix the endianness to match the host. */ | |
192 | descriptor->version = extract_unsigned_integer (&desc_buf[0], 4, byte_order); | |
193 | descriptor->action_flag = | |
194 | extract_unsigned_integer (&desc_buf[4], 4, byte_order); | |
195 | descriptor->relevant_entry = extract_typed_address (&desc_buf[8], ptr_type); | |
196 | descriptor->first_entry = | |
197 | extract_typed_address (&desc_buf[8 + ptr_size], ptr_type); | |
198 | } | |
199 | ||
200 | /* Helper function for reading a JITed code entry from remote memory. */ | |
201 | ||
202 | static void | |
0756c555 DE |
203 | jit_read_code_entry (struct gdbarch *gdbarch, |
204 | CORE_ADDR code_addr, struct jit_code_entry *code_entry) | |
4efc6507 DE |
205 | { |
206 | int err; | |
207 | struct type *ptr_type; | |
208 | int ptr_size; | |
209 | int entry_size; | |
210 | gdb_byte *entry_buf; | |
0756c555 | 211 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
4efc6507 DE |
212 | |
213 | /* Figure out how big the entry is on the remote and how to read it. */ | |
0756c555 | 214 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 DE |
215 | ptr_size = TYPE_LENGTH (ptr_type); |
216 | entry_size = 3 * ptr_size + 8; /* Three pointers and one 64-bit int. */ | |
217 | entry_buf = alloca (entry_size); | |
218 | ||
219 | /* Read the entry. */ | |
220 | err = target_read_memory (code_addr, entry_buf, entry_size); | |
221 | if (err) | |
222 | error (_("Unable to read JIT code entry from remote memory!")); | |
223 | ||
224 | /* Fix the endianness to match the host. */ | |
0756c555 | 225 | ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
4efc6507 DE |
226 | code_entry->next_entry = extract_typed_address (&entry_buf[0], ptr_type); |
227 | code_entry->prev_entry = | |
228 | extract_typed_address (&entry_buf[ptr_size], ptr_type); | |
229 | code_entry->symfile_addr = | |
230 | extract_typed_address (&entry_buf[2 * ptr_size], ptr_type); | |
231 | code_entry->symfile_size = | |
232 | extract_unsigned_integer (&entry_buf[3 * ptr_size], 8, byte_order); | |
233 | } | |
234 | ||
235 | /* This function registers code associated with a JIT code entry. It uses the | |
236 | pointer and size pair in the entry to read the symbol file from the remote | |
237 | and then calls symbol_file_add_from_local_memory to add it as though it were | |
238 | a symbol file added by the user. */ | |
239 | ||
240 | static void | |
0756c555 DE |
241 | jit_register_code (struct gdbarch *gdbarch, |
242 | CORE_ADDR entry_addr, struct jit_code_entry *code_entry) | |
4efc6507 DE |
243 | { |
244 | bfd *nbfd; | |
245 | struct section_addr_info *sai; | |
246 | struct bfd_section *sec; | |
247 | struct objfile *objfile; | |
248 | struct cleanup *old_cleanups, *my_cleanups; | |
249 | int i; | |
250 | const struct bfd_arch_info *b; | |
251 | CORE_ADDR *entry_addr_ptr; | |
252 | ||
a255712f PP |
253 | if (jit_debug) |
254 | fprintf_unfiltered (gdb_stdlog, | |
255 | "jit_register_code, symfile_addr = %s, " | |
256 | "symfile_size = %s\n", | |
257 | paddress (gdbarch, code_entry->symfile_addr), | |
258 | pulongest (code_entry->symfile_size)); | |
259 | ||
4efc6507 DE |
260 | nbfd = bfd_open_from_target_memory (code_entry->symfile_addr, |
261 | code_entry->symfile_size, gnutarget); | |
262 | old_cleanups = make_cleanup_bfd_close (nbfd); | |
263 | ||
264 | /* Check the format. NOTE: This initializes important data that GDB uses! | |
265 | We would segfault later without this line. */ | |
266 | if (!bfd_check_format (nbfd, bfd_object)) | |
267 | { | |
268 | printf_unfiltered (_("\ | |
269 | JITed symbol file is not an object file, ignoring it.\n")); | |
270 | do_cleanups (old_cleanups); | |
271 | return; | |
272 | } | |
273 | ||
274 | /* Check bfd arch. */ | |
0756c555 | 275 | b = gdbarch_bfd_arch_info (gdbarch); |
4efc6507 DE |
276 | if (b->compatible (b, bfd_get_arch_info (nbfd)) != b) |
277 | warning (_("JITed object file architecture %s is not compatible " | |
278 | "with target architecture %s."), bfd_get_arch_info | |
279 | (nbfd)->printable_name, b->printable_name); | |
280 | ||
281 | /* Read the section address information out of the symbol file. Since the | |
282 | file is generated by the JIT at runtime, it should all of the absolute | |
283 | addresses that we care about. */ | |
284 | sai = alloc_section_addr_info (bfd_count_sections (nbfd)); | |
285 | make_cleanup_free_section_addr_info (sai); | |
286 | i = 0; | |
287 | for (sec = nbfd->sections; sec != NULL; sec = sec->next) | |
288 | if ((bfd_get_section_flags (nbfd, sec) & (SEC_ALLOC|SEC_LOAD)) != 0) | |
289 | { | |
290 | /* We assume that these virtual addresses are absolute, and do not | |
291 | treat them as offsets. */ | |
292 | sai->other[i].addr = bfd_get_section_vma (nbfd, sec); | |
04a679b8 | 293 | sai->other[i].name = xstrdup (bfd_get_section_name (nbfd, sec)); |
4efc6507 DE |
294 | sai->other[i].sectindex = sec->index; |
295 | ++i; | |
296 | } | |
297 | ||
4efc6507 | 298 | /* This call takes ownership of sai. */ |
63524580 | 299 | objfile = symbol_file_add_from_bfd (nbfd, 0, sai, OBJF_SHARED, NULL); |
4efc6507 | 300 | |
4efc6507 DE |
301 | /* Remember a mapping from entry_addr to objfile. */ |
302 | entry_addr_ptr = xmalloc (sizeof (CORE_ADDR)); | |
303 | *entry_addr_ptr = entry_addr; | |
304 | set_objfile_data (objfile, jit_objfile_data, entry_addr_ptr); | |
305 | ||
306 | discard_cleanups (old_cleanups); | |
307 | } | |
308 | ||
1777feb0 MS |
309 | /* This function unregisters JITed code and frees the corresponding |
310 | objfile. */ | |
4efc6507 DE |
311 | |
312 | static void | |
313 | jit_unregister_code (struct objfile *objfile) | |
314 | { | |
315 | free_objfile (objfile); | |
316 | } | |
317 | ||
318 | /* Look up the objfile with this code entry address. */ | |
319 | ||
320 | static struct objfile * | |
321 | jit_find_objf_with_entry_addr (CORE_ADDR entry_addr) | |
322 | { | |
323 | struct objfile *objf; | |
324 | CORE_ADDR *objf_entry_addr; | |
325 | ||
326 | ALL_OBJFILES (objf) | |
327 | { | |
328 | objf_entry_addr = (CORE_ADDR *) objfile_data (objf, jit_objfile_data); | |
329 | if (objf_entry_addr != NULL && *objf_entry_addr == entry_addr) | |
330 | return objf; | |
331 | } | |
332 | return NULL; | |
333 | } | |
334 | ||
03673fc7 PP |
335 | /* (Re-)Initialize the jit breakpoint if necessary. |
336 | Return 0 on success. */ | |
337 | ||
338 | static int | |
339 | jit_breakpoint_re_set_internal (struct gdbarch *gdbarch, | |
340 | struct jit_inferior_data *inf_data) | |
341 | { | |
342 | if (inf_data->breakpoint_addr == 0) | |
343 | { | |
344 | struct minimal_symbol *reg_symbol; | |
345 | ||
346 | /* Lookup the registration symbol. If it is missing, then we assume | |
347 | we are not attached to a JIT. */ | |
348 | reg_symbol = lookup_minimal_symbol (jit_break_name, NULL, NULL); | |
349 | if (reg_symbol == NULL) | |
350 | return 1; | |
351 | inf_data->breakpoint_addr = SYMBOL_VALUE_ADDRESS (reg_symbol); | |
352 | if (inf_data->breakpoint_addr == 0) | |
353 | return 2; | |
354 | } | |
355 | else | |
356 | return 0; | |
357 | ||
358 | if (jit_debug) | |
359 | fprintf_unfiltered (gdb_stdlog, | |
360 | "jit_breakpoint_re_set_internal, " | |
361 | "breakpoint_addr = %s\n", | |
362 | paddress (gdbarch, inf_data->breakpoint_addr)); | |
363 | ||
364 | /* Put a breakpoint in the registration symbol. */ | |
365 | create_jit_event_breakpoint (gdbarch, inf_data->breakpoint_addr); | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | /* Register any already created translations. */ | |
0756c555 DE |
371 | |
372 | static void | |
373 | jit_inferior_init (struct gdbarch *gdbarch) | |
4efc6507 | 374 | { |
4efc6507 DE |
375 | struct jit_descriptor descriptor; |
376 | struct jit_code_entry cur_entry; | |
03673fc7 | 377 | struct jit_inferior_data *inf_data; |
4efc6507 | 378 | CORE_ADDR cur_entry_addr; |
4efc6507 | 379 | |
a255712f | 380 | if (jit_debug) |
03673fc7 | 381 | fprintf_unfiltered (gdb_stdlog, "jit_inferior_init\n"); |
a255712f | 382 | |
03673fc7 PP |
383 | inf_data = get_jit_inferior_data (); |
384 | if (jit_breakpoint_re_set_internal (gdbarch, inf_data) != 0) | |
4efc6507 DE |
385 | return; |
386 | ||
03673fc7 PP |
387 | if (inf_data->descriptor_addr == 0) |
388 | { | |
389 | struct minimal_symbol *desc_symbol; | |
4efc6507 | 390 | |
03673fc7 PP |
391 | /* Lookup the descriptor symbol and cache the addr. If it is |
392 | missing, we assume we are not attached to a JIT and return early. */ | |
393 | desc_symbol = lookup_minimal_symbol (jit_descriptor_name, NULL, NULL); | |
394 | if (desc_symbol == NULL) | |
395 | return; | |
a255712f | 396 | |
03673fc7 PP |
397 | inf_data->descriptor_addr = SYMBOL_VALUE_ADDRESS (desc_symbol); |
398 | if (inf_data->descriptor_addr == 0) | |
399 | return; | |
400 | } | |
4efc6507 | 401 | |
a255712f PP |
402 | if (jit_debug) |
403 | fprintf_unfiltered (gdb_stdlog, | |
03673fc7 PP |
404 | "jit_inferior_init, descriptor_addr = %s\n", |
405 | paddress (gdbarch, inf_data->descriptor_addr)); | |
a255712f | 406 | |
1777feb0 MS |
407 | /* Read the descriptor so we can check the version number and load |
408 | any already JITed functions. */ | |
03673fc7 | 409 | jit_read_descriptor (gdbarch, &descriptor, inf_data->descriptor_addr); |
4efc6507 DE |
410 | |
411 | /* Check that the version number agrees with that we support. */ | |
412 | if (descriptor.version != 1) | |
413 | error (_("Unsupported JIT protocol version in descriptor!")); | |
414 | ||
1777feb0 MS |
415 | /* If we've attached to a running program, we need to check the descriptor |
416 | to register any functions that were already generated. */ | |
4efc6507 DE |
417 | for (cur_entry_addr = descriptor.first_entry; |
418 | cur_entry_addr != 0; | |
419 | cur_entry_addr = cur_entry.next_entry) | |
420 | { | |
0756c555 | 421 | jit_read_code_entry (gdbarch, cur_entry_addr, &cur_entry); |
4efc6507 DE |
422 | |
423 | /* This hook may be called many times during setup, so make sure we don't | |
424 | add the same symbol file twice. */ | |
425 | if (jit_find_objf_with_entry_addr (cur_entry_addr) != NULL) | |
426 | continue; | |
427 | ||
0756c555 | 428 | jit_register_code (gdbarch, cur_entry_addr, &cur_entry); |
4efc6507 DE |
429 | } |
430 | } | |
431 | ||
0756c555 DE |
432 | /* Exported routine to call when an inferior has been created. */ |
433 | ||
434 | void | |
435 | jit_inferior_created_hook (void) | |
436 | { | |
437 | jit_inferior_init (target_gdbarch); | |
438 | } | |
439 | ||
440 | /* Exported routine to call to re-set the jit breakpoints, | |
441 | e.g. when a program is rerun. */ | |
442 | ||
443 | void | |
444 | jit_breakpoint_re_set (void) | |
445 | { | |
03673fc7 PP |
446 | jit_breakpoint_re_set_internal (target_gdbarch, |
447 | get_jit_inferior_data ()); | |
448 | } | |
449 | ||
450 | /* Reset inferior_data, so sybols will be looked up again, and jit_breakpoint | |
451 | will be reset. */ | |
452 | ||
453 | static void | |
454 | jit_reset_inferior_data_and_breakpoints (void) | |
455 | { | |
456 | struct jit_inferior_data *inf_data; | |
457 | ||
458 | /* Force jit_inferior_init to re-lookup of jit symbol addresses. */ | |
459 | inf_data = get_jit_inferior_data (); | |
460 | inf_data->breakpoint_addr = 0; | |
461 | inf_data->descriptor_addr = 0; | |
462 | ||
463 | /* Remove any existing JIT breakpoint(s). */ | |
464 | remove_jit_event_breakpoints (); | |
465 | ||
0756c555 DE |
466 | jit_inferior_init (target_gdbarch); |
467 | } | |
468 | ||
4efc6507 DE |
469 | /* Wrapper to match the observer function pointer prototype. */ |
470 | ||
471 | static void | |
0756c555 | 472 | jit_inferior_created_observer (struct target_ops *objfile, int from_tty) |
4efc6507 | 473 | { |
03673fc7 | 474 | jit_reset_inferior_data_and_breakpoints (); |
4efc6507 DE |
475 | } |
476 | ||
1777feb0 MS |
477 | /* This function cleans up any code entries left over when the |
478 | inferior exits. We get left over code when the inferior exits | |
479 | without unregistering its code, for example when it crashes. */ | |
4efc6507 DE |
480 | |
481 | static void | |
a79b8f6e | 482 | jit_inferior_exit_hook (struct inferior *inf) |
4efc6507 DE |
483 | { |
484 | struct objfile *objf; | |
485 | struct objfile *temp; | |
486 | ||
4efc6507 DE |
487 | ALL_OBJFILES_SAFE (objf, temp) |
488 | if (objfile_data (objf, jit_objfile_data) != NULL) | |
489 | jit_unregister_code (objf); | |
490 | } | |
491 | ||
03673fc7 PP |
492 | static void |
493 | jit_executable_changed_observer (void) | |
494 | { | |
495 | jit_reset_inferior_data_and_breakpoints (); | |
496 | } | |
497 | ||
4efc6507 | 498 | void |
0756c555 | 499 | jit_event_handler (struct gdbarch *gdbarch) |
4efc6507 DE |
500 | { |
501 | struct jit_descriptor descriptor; | |
502 | struct jit_code_entry code_entry; | |
503 | CORE_ADDR entry_addr; | |
504 | struct objfile *objf; | |
505 | ||
506 | /* Read the descriptor from remote memory. */ | |
03673fc7 PP |
507 | jit_read_descriptor (gdbarch, &descriptor, |
508 | get_jit_inferior_data ()->descriptor_addr); | |
4efc6507 DE |
509 | entry_addr = descriptor.relevant_entry; |
510 | ||
1777feb0 | 511 | /* Do the corresponding action. */ |
4efc6507 DE |
512 | switch (descriptor.action_flag) |
513 | { | |
514 | case JIT_NOACTION: | |
515 | break; | |
516 | case JIT_REGISTER: | |
0756c555 DE |
517 | jit_read_code_entry (gdbarch, entry_addr, &code_entry); |
518 | jit_register_code (gdbarch, entry_addr, &code_entry); | |
4efc6507 DE |
519 | break; |
520 | case JIT_UNREGISTER: | |
521 | objf = jit_find_objf_with_entry_addr (entry_addr); | |
522 | if (objf == NULL) | |
1777feb0 MS |
523 | printf_unfiltered (_("Unable to find JITed code " |
524 | "entry at address: %s\n"), | |
dfdbc9b4 | 525 | paddress (gdbarch, entry_addr)); |
4efc6507 DE |
526 | else |
527 | jit_unregister_code (objf); | |
528 | ||
529 | break; | |
530 | default: | |
531 | error (_("Unknown action_flag value in JIT descriptor!")); | |
532 | break; | |
533 | } | |
534 | } | |
535 | ||
536 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
537 | ||
538 | extern void _initialize_jit (void); | |
539 | ||
540 | void | |
541 | _initialize_jit (void) | |
542 | { | |
1777feb0 MS |
543 | add_setshow_zinteger_cmd ("jit", class_maintenance, &jit_debug, |
544 | _("Set JIT debugging."), | |
545 | _("Show JIT debugging."), | |
546 | _("When non-zero, JIT debugging is enabled."), | |
a255712f PP |
547 | NULL, |
548 | show_jit_debug, | |
549 | &setdebuglist, &showdebuglist); | |
550 | ||
0756c555 | 551 | observer_attach_inferior_created (jit_inferior_created_observer); |
4efc6507 | 552 | observer_attach_inferior_exit (jit_inferior_exit_hook); |
03673fc7 | 553 | observer_attach_executable_changed (jit_executable_changed_observer); |
4efc6507 | 554 | jit_objfile_data = register_objfile_data (); |
03673fc7 PP |
555 | jit_inferior_data = |
556 | register_inferior_data_with_cleanup (jit_inferior_data_cleanup); | |
4efc6507 | 557 | } |