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58caa3dc | 1 | /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
1d506c26 | 2 | Copyright (C) 2002-2024 Free Software Foundation, Inc. |
58caa3dc DJ |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
58caa3dc DJ |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
58caa3dc | 18 | |
1a5c2598 TT |
19 | #ifndef GDBSERVER_LINUX_LOW_H |
20 | #define GDBSERVER_LINUX_LOW_H | |
21 | ||
6d4ee8c6 | 22 | #include "nat/linux-nat.h" |
125f8a3d | 23 | #include "nat/gdb_thread_db.h" |
a5362b9a | 24 | #include <signal.h> |
dae5f5cf | 25 | |
623b6bdf | 26 | #include "gdbthread.h" |
95954743 PA |
27 | #include "gdb_proc_service.h" |
28 | ||
96d7229d | 29 | /* Included for ptrace type definitions. */ |
125f8a3d | 30 | #include "nat/linux-ptrace.h" |
ef0f16cc | 31 | #include "target/waitstatus.h" |
229d26fc | 32 | #include "tracepoint.h" |
96d7229d | 33 | |
013e3554 TBA |
34 | #include <list> |
35 | ||
f15f9948 TJB |
36 | #define PTRACE_XFER_TYPE long |
37 | ||
58caa3dc | 38 | #ifdef HAVE_LINUX_REGSETS |
442ea881 PA |
39 | typedef void (*regset_fill_func) (struct regcache *, void *); |
40 | typedef void (*regset_store_func) (struct regcache *, const void *); | |
0d62e5e8 DJ |
41 | enum regset_type { |
42 | GENERAL_REGS, | |
43 | FP_REGS, | |
44 | EXTENDED_REGS, | |
1ef53e6b | 45 | OPTIONAL_REGS, /* Do not error if the regset cannot be accessed. */ |
0d62e5e8 DJ |
46 | }; |
47 | ||
50bc912a PA |
48 | /* The arch's regsets array initializer must be terminated with a NULL |
49 | regset. */ | |
50 | #define NULL_REGSET \ | |
51 | { 0, 0, 0, -1, (enum regset_type) -1, NULL, NULL } | |
52 | ||
58caa3dc DJ |
53 | struct regset_info |
54 | { | |
55 | int get_request, set_request; | |
1570b33e L |
56 | /* If NT_TYPE isn't 0, it will be passed to ptrace as the 3rd |
57 | argument and the 4th argument should be "const struct iovec *". */ | |
58 | int nt_type; | |
58caa3dc | 59 | int size; |
0d62e5e8 DJ |
60 | enum regset_type type; |
61 | regset_fill_func fill_function; | |
62 | regset_store_func store_function; | |
58caa3dc | 63 | }; |
3aee8918 PA |
64 | |
65 | /* Aggregation of all the supported regsets of a given | |
66 | architecture/mode. */ | |
67 | ||
68 | struct regsets_info | |
69 | { | |
70 | /* The regsets array. */ | |
71 | struct regset_info *regsets; | |
72 | ||
73 | /* The number of regsets in the REGSETS array. */ | |
74 | int num_regsets; | |
75 | ||
76 | /* If we get EIO on a regset, do not try it again. Note the set of | |
77 | supported regsets may depend on processor mode on biarch | |
030031ee PA |
78 | machines. This is a (lazily allocated) array holding one boolean |
79 | byte (0/1) per regset, with each element corresponding to the | |
80 | regset in the REGSETS array above at the same offset. */ | |
3aee8918 PA |
81 | char *disabled_regsets; |
82 | }; | |
83 | ||
84 | #endif | |
85 | ||
86 | /* Mapping between the general-purpose registers in `struct user' | |
87 | format and GDB's register array layout. */ | |
88 | ||
89 | struct usrregs_info | |
90 | { | |
91 | /* The number of registers accessible. */ | |
92 | int num_regs; | |
93 | ||
94 | /* The registers map. */ | |
95 | int *regmap; | |
96 | }; | |
97 | ||
98 | /* All info needed to access an architecture/mode's registers. */ | |
99 | ||
100 | struct regs_info | |
101 | { | |
102 | /* Regset support bitmap: 1 for registers that are transferred as a part | |
103 | of a regset, 0 for ones that need to be handled individually. This | |
104 | can be NULL if all registers are transferred with regsets or regsets | |
105 | are not supported. */ | |
106 | unsigned char *regset_bitmap; | |
107 | ||
108 | /* Info used when accessing registers with PTRACE_PEEKUSER / | |
109 | PTRACE_POKEUSER. This can be NULL if all registers are | |
110 | transferred with regsets .*/ | |
111 | struct usrregs_info *usrregs; | |
112 | ||
113 | #ifdef HAVE_LINUX_REGSETS | |
114 | /* Info used when accessing registers with regsets. */ | |
115 | struct regsets_info *regsets_info; | |
58caa3dc | 116 | #endif |
3aee8918 | 117 | }; |
2ec06d2e | 118 | |
95954743 PA |
119 | struct process_info_private |
120 | { | |
aa5ca48f DE |
121 | /* Arch-specific additions. */ |
122 | struct arch_process_info *arch_private; | |
cdbfd419 PP |
123 | |
124 | /* libthread_db-specific additions. Not NULL if this process has loaded | |
125 | thread_db, and it is active. */ | |
126 | struct thread_db *thread_db; | |
2268b414 JK |
127 | |
128 | /* &_r_debug. 0 if not yet determined. -1 if no PT_DYNAMIC in Phdrs. */ | |
129 | CORE_ADDR r_debug; | |
421490af PA |
130 | |
131 | /* The /proc/pid/mem file used for reading/writing memory. */ | |
132 | int mem_fd; | |
95954743 PA |
133 | }; |
134 | ||
aa5ca48f DE |
135 | struct lwp_info; |
136 | ||
5ef9273d TBA |
137 | /* Target ops definitions for a Linux target. */ |
138 | ||
52405d85 | 139 | class linux_process_target : public process_stratum_target |
5ef9273d TBA |
140 | { |
141 | public: | |
142 | ||
15295543 TBA |
143 | int create_inferior (const char *program, |
144 | const std::vector<char *> &program_args) override; | |
6dee9afb TBA |
145 | |
146 | void post_create_inferior () override; | |
ef03dad8 TBA |
147 | |
148 | int attach (unsigned long pid) override; | |
c6885a57 TBA |
149 | |
150 | int kill (process_info *proc) override; | |
9061c9cf TBA |
151 | |
152 | int detach (process_info *proc) override; | |
8adb37b9 TBA |
153 | |
154 | void mourn (process_info *proc) override; | |
95a49a39 TBA |
155 | |
156 | void join (int pid) override; | |
13d3d99b TBA |
157 | |
158 | bool thread_alive (ptid_t pid) override; | |
0e4d7e35 TBA |
159 | |
160 | void resume (thread_resume *resume_info, size_t n) override; | |
6532e7e3 TBA |
161 | |
162 | ptid_t wait (ptid_t ptid, target_waitstatus *status, | |
b60cea74 | 163 | target_wait_flags options) override; |
a5a4d4cd TBA |
164 | |
165 | void fetch_registers (regcache *regcache, int regno) override; | |
166 | ||
167 | void store_registers (regcache *regcache, int regno) override; | |
79b44087 | 168 | |
e2558df3 TBA |
169 | int read_memory (CORE_ADDR memaddr, unsigned char *myaddr, |
170 | int len) override; | |
171 | ||
172 | int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
173 | int len) override; | |
2a31c7aa TBA |
174 | |
175 | void look_up_symbols () override; | |
eb497a2a TBA |
176 | |
177 | void request_interrupt () override; | |
eac215cc TBA |
178 | |
179 | bool supports_read_auxv () override; | |
180 | ||
43e5fbd8 | 181 | int read_auxv (int pid, CORE_ADDR offset, unsigned char *myaddr, |
eac215cc | 182 | unsigned int len) override; |
a2b2297a | 183 | |
7e0bde70 TBA |
184 | int insert_point (enum raw_bkpt_type type, CORE_ADDR addr, |
185 | int size, raw_breakpoint *bp) override; | |
186 | ||
187 | int remove_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
188 | int size, raw_breakpoint *bp) override; | |
84320c4e TBA |
189 | |
190 | bool stopped_by_sw_breakpoint () override; | |
191 | ||
192 | bool supports_stopped_by_sw_breakpoint () override; | |
93fe88b2 TBA |
193 | |
194 | bool stopped_by_hw_breakpoint () override; | |
195 | ||
196 | bool supports_stopped_by_hw_breakpoint () override; | |
22aa6223 TBA |
197 | |
198 | bool supports_hardware_single_step () override; | |
6eeb5c55 TBA |
199 | |
200 | bool stopped_by_watchpoint () override; | |
201 | ||
202 | CORE_ADDR stopped_data_address () override; | |
5203ae1e TBA |
203 | |
204 | bool supports_read_offsets () override; | |
205 | ||
206 | int read_offsets (CORE_ADDR *text, CORE_ADDR *data) override; | |
6e3fd7e9 TBA |
207 | |
208 | bool supports_get_tls_address () override; | |
209 | ||
210 | int get_tls_address (thread_info *thread, CORE_ADDR offset, | |
211 | CORE_ADDR load_module, CORE_ADDR *address) override; | |
2d0795ee TBA |
212 | |
213 | bool supports_qxfer_osdata () override; | |
214 | ||
215 | int qxfer_osdata (const char *annex, unsigned char *readbuf, | |
216 | unsigned const char *writebuf, | |
217 | CORE_ADDR offset, int len) override; | |
d7abedf7 TBA |
218 | |
219 | bool supports_qxfer_siginfo () override; | |
220 | ||
221 | int qxfer_siginfo (const char *annex, unsigned char *readbuf, | |
222 | unsigned const char *writebuf, | |
223 | CORE_ADDR offset, int len) override; | |
0dc587d4 TBA |
224 | |
225 | bool supports_non_stop () override; | |
226 | ||
227 | bool async (bool enable) override; | |
228 | ||
229 | int start_non_stop (bool enable) override; | |
652aef77 TBA |
230 | |
231 | bool supports_multi_process () override; | |
9690a72a TBA |
232 | |
233 | bool supports_fork_events () override; | |
234 | ||
235 | bool supports_vfork_events () override; | |
236 | ||
393a6b59 PA |
237 | gdb_thread_options supported_thread_options () override; |
238 | ||
9690a72a | 239 | bool supports_exec_events () override; |
fb00dfce TBA |
240 | |
241 | void handle_new_gdb_connection () override; | |
55cf3021 TBA |
242 | |
243 | int handle_monitor_command (char *mon) override; | |
95a45fc1 TBA |
244 | |
245 | int core_of_thread (ptid_t ptid) override; | |
9da41fda TBA |
246 | |
247 | #if defined PT_GETDSBT || defined PTRACE_GETFDPIC | |
248 | bool supports_read_loadmap () override; | |
249 | ||
250 | int read_loadmap (const char *annex, CORE_ADDR offset, | |
251 | unsigned char *myaddr, unsigned int len) override; | |
252 | #endif | |
0df28b1b | 253 | |
770d8f6a TBA |
254 | CORE_ADDR read_pc (regcache *regcache) override; |
255 | ||
256 | void write_pc (regcache *regcache, CORE_ADDR pc) override; | |
68119632 TBA |
257 | |
258 | bool supports_thread_stopped () override; | |
259 | ||
260 | bool thread_stopped (thread_info *thread) override; | |
29e8dc09 | 261 | |
ef980d65 PA |
262 | bool any_resumed () override; |
263 | ||
29e8dc09 TBA |
264 | void pause_all (bool freeze) override; |
265 | ||
266 | void unpause_all (bool unfreeze) override; | |
5c9eb2f2 TBA |
267 | |
268 | void stabilize_threads () override; | |
c23c9391 | 269 | |
c756403b | 270 | bool supports_disable_randomization () override; |
974387bb TBA |
271 | |
272 | bool supports_qxfer_libraries_svr4 () override; | |
273 | ||
274 | int qxfer_libraries_svr4 (const char *annex, | |
275 | unsigned char *readbuf, | |
276 | unsigned const char *writebuf, | |
277 | CORE_ADDR offset, int len) override; | |
c0245cb9 TBA |
278 | |
279 | bool supports_agent () override; | |
79597bdd TBA |
280 | |
281 | #ifdef HAVE_LINUX_BTRACE | |
8263b346 TBA |
282 | bool supports_btrace () override; |
283 | ||
696c0d5e | 284 | btrace_target_info *enable_btrace (thread_info *tp, |
79597bdd TBA |
285 | const btrace_config *conf) override; |
286 | ||
287 | int disable_btrace (btrace_target_info *tinfo) override; | |
288 | ||
873a185b | 289 | int read_btrace (btrace_target_info *tinfo, std::string *buf, |
79597bdd TBA |
290 | enum btrace_read_type type) override; |
291 | ||
292 | int read_btrace_conf (const btrace_target_info *tinfo, | |
873a185b | 293 | std::string *buf) override; |
79597bdd | 294 | #endif |
2526e0cd TBA |
295 | |
296 | bool supports_range_stepping () override; | |
8247b823 TBA |
297 | |
298 | bool supports_pid_to_exec_file () override; | |
299 | ||
04977957 | 300 | const char *pid_to_exec_file (int pid) override; |
c9b7b804 TBA |
301 | |
302 | bool supports_multifs () override; | |
303 | ||
304 | int multifs_open (int pid, const char *filename, int flags, | |
305 | mode_t mode) override; | |
306 | ||
307 | int multifs_unlink (int pid, const char *filename) override; | |
308 | ||
309 | ssize_t multifs_readlink (int pid, const char *filename, char *buf, | |
310 | size_t bufsiz) override; | |
d367006f | 311 | |
7f63b89b TBA |
312 | const char *thread_name (ptid_t thread) override; |
313 | ||
314 | #if USE_THREAD_DB | |
315 | bool thread_handle (ptid_t ptid, gdb_byte **handle, | |
316 | int *handle_len) override; | |
317 | #endif | |
5303a34f | 318 | |
7b961964 | 319 | thread_info *thread_pending_parent (thread_info *thread) override; |
faf44a31 PA |
320 | thread_info *thread_pending_child (thread_info *thread, |
321 | target_waitkind *kind) override; | |
7b961964 | 322 | |
bc8d3ae4 | 323 | bool supports_catch_syscall () override; |
d633e831 | 324 | |
aa8d21c9 TBA |
325 | /* Return the information to access registers. This has public |
326 | visibility because proc-service uses it. */ | |
327 | virtual const regs_info *get_regs_info () = 0; | |
328 | ||
d16f3f6c TBA |
329 | private: |
330 | ||
331 | /* Handle a GNU/Linux extended wait response. If we see a clone, | |
332 | fork, or vfork event, we need to add the new LWP to our list | |
333 | (and return 0 so as not to report the trap to higher layers). | |
334 | If we see an exec event, we will modify ORIG_EVENT_LWP to point | |
335 | to a new LWP representing the new program. */ | |
336 | int handle_extended_wait (lwp_info **orig_event_lwp, int wstat); | |
337 | ||
1a48f002 SM |
338 | /* Do low-level handling of the event, and check if this is an event we want |
339 | to report. Is so, store it as a pending status in the lwp_info structure | |
340 | corresponding to LWPID. */ | |
341 | void filter_event (int lwpid, int wstat); | |
d16f3f6c TBA |
342 | |
343 | /* Wait for an event from child(ren) WAIT_PTID, and return any that | |
344 | match FILTER_PTID (leaving others pending). The PTIDs can be: | |
345 | minus_one_ptid, to specify any child; a pid PTID, specifying all | |
346 | lwps of a thread group; or a PTID representing a single lwp. Store | |
347 | the stop status through the status pointer WSTAT. OPTIONS is | |
348 | passed to the waitpid call. Return 0 if no event was found and | |
349 | OPTIONS contains WNOHANG. Return -1 if no unwaited-for children | |
350 | was found. Return the PID of the stopped child otherwise. */ | |
351 | int wait_for_event_filtered (ptid_t wait_ptid, ptid_t filter_ptid, | |
352 | int *wstatp, int options); | |
353 | ||
354 | /* Wait for an event from child(ren) PTID. PTIDs can be: | |
355 | minus_one_ptid, to specify any child; a pid PTID, specifying all | |
356 | lwps of a thread group; or a PTID representing a single lwp. Store | |
357 | the stop status through the status pointer WSTAT. OPTIONS is | |
358 | passed to the waitpid call. Return 0 if no event was found and | |
359 | OPTIONS contains WNOHANG. Return -1 if no unwaited-for children | |
360 | was found. Return the PID of the stopped child otherwise. */ | |
361 | int wait_for_event (ptid_t ptid, int *wstatp, int options); | |
362 | ||
363 | /* Wait for all children to stop for the SIGSTOPs we just queued. */ | |
364 | void wait_for_sigstop (); | |
365 | ||
366 | /* Wait for process, returns status. */ | |
367 | ptid_t wait_1 (ptid_t ptid, target_waitstatus *ourstatus, | |
b60cea74 | 368 | target_wait_flags target_options); |
d16f3f6c TBA |
369 | |
370 | /* Stop all lwps that aren't stopped yet, except EXCEPT, if not NULL. | |
371 | If SUSPEND, then also increase the suspend count of every LWP, | |
372 | except EXCEPT. */ | |
373 | void stop_all_lwps (int suspend, lwp_info *except); | |
374 | ||
375 | /* Stopped LWPs that the client wanted to be running, that don't have | |
376 | pending statuses, are set to run again, except for EXCEPT, if not | |
377 | NULL. This undoes a stop_all_lwps call. */ | |
378 | void unstop_all_lwps (int unsuspend, lwp_info *except); | |
379 | ||
380 | /* Start a step-over operation on LWP. When LWP stopped at a | |
381 | breakpoint, to make progress, we need to remove the breakpoint out | |
382 | of the way. If we let other threads run while we do that, they may | |
383 | pass by the breakpoint location and miss hitting it. To avoid | |
384 | that, a step-over momentarily stops all threads while LWP is | |
385 | single-stepped by either hardware or software while the breakpoint | |
386 | is temporarily uninserted from the inferior. When the single-step | |
387 | finishes, we reinsert the breakpoint, and let all threads that are | |
388 | supposed to be running, run again. */ | |
389 | void start_step_over (lwp_info *lwp); | |
390 | ||
391 | /* If there's a step over in progress, wait until all threads stop | |
392 | (that is, until the stepping thread finishes its step), and | |
393 | unsuspend all lwps. The stepping thread ends with its status | |
394 | pending, which is processed later when we get back to processing | |
395 | events. */ | |
396 | void complete_ongoing_step_over (); | |
397 | ||
b31cdfa6 TBA |
398 | /* Finish a step-over. Reinsert the breakpoint we had uninserted in |
399 | start_step_over, if still there, and delete any single-step | |
400 | breakpoints we've set, on non hardware single-step targets. | |
401 | Return true if step over finished. */ | |
402 | bool finish_step_over (lwp_info *lwp); | |
403 | ||
d16f3f6c TBA |
404 | /* When we finish a step-over, set threads running again. If there's |
405 | another thread that may need a step-over, now's the time to start | |
406 | it. Eventually, we'll move all threads past their breakpoints. */ | |
407 | void proceed_all_lwps (); | |
408 | ||
409 | /* The reason we resume in the caller, is because we want to be able | |
410 | to pass lwp->status_pending as WSTAT, and we need to clear | |
411 | status_pending_p before resuming, otherwise, resume_one_lwp | |
412 | refuses to resume. */ | |
413 | bool maybe_move_out_of_jump_pad (lwp_info *lwp, int *wstat); | |
414 | ||
415 | /* Move THREAD out of the jump pad. */ | |
416 | void move_out_of_jump_pad (thread_info *thread); | |
ef0478f6 | 417 | |
797bcff5 TBA |
418 | /* Call low_arch_setup on THREAD. */ |
419 | void arch_setup_thread (thread_info *thread); | |
420 | ||
daca57a7 TBA |
421 | #ifdef HAVE_LINUX_USRREGS |
422 | /* Fetch one register. */ | |
423 | void fetch_register (const usrregs_info *usrregs, regcache *regcache, | |
424 | int regno); | |
425 | ||
426 | /* Store one register. */ | |
427 | void store_register (const usrregs_info *usrregs, regcache *regcache, | |
428 | int regno); | |
429 | #endif | |
430 | ||
431 | /* Fetch all registers, or just one, from the child process. | |
432 | If REGNO is -1, do this for all registers, skipping any that are | |
433 | assumed to have been retrieved by regsets_fetch_inferior_registers, | |
434 | unless ALL is non-zero. | |
435 | Otherwise, REGNO specifies which register (so we can save time). */ | |
436 | void usr_fetch_inferior_registers (const regs_info *regs_info, | |
437 | regcache *regcache, int regno, int all); | |
438 | ||
439 | /* Store our register values back into the inferior. | |
440 | If REGNO is -1, do this for all registers, skipping any that are | |
441 | assumed to have been saved by regsets_store_inferior_registers, | |
442 | unless ALL is non-zero. | |
443 | Otherwise, REGNO specifies which register (so we can save time). */ | |
444 | void usr_store_inferior_registers (const regs_info *regs_info, | |
445 | regcache *regcache, int regno, int all); | |
446 | ||
df95181f TBA |
447 | /* Return the PC as read from the regcache of LWP, without any |
448 | adjustment. */ | |
449 | CORE_ADDR get_pc (lwp_info *lwp); | |
450 | ||
451 | /* Called when the LWP stopped for a signal/trap. If it stopped for a | |
452 | trap check what caused it (breakpoint, watchpoint, trace, etc.), | |
453 | and save the result in the LWP's stop_reason field. If it stopped | |
454 | for a breakpoint, decrement the PC if necessary on the lwp's | |
455 | architecture. Returns true if we now have the LWP's stop PC. */ | |
456 | bool save_stop_reason (lwp_info *lwp); | |
457 | ||
458 | /* Resume execution of LWP. If STEP is nonzero, single-step it. If | |
459 | SIGNAL is nonzero, give it that signal. */ | |
460 | void resume_one_lwp_throw (lwp_info *lwp, int step, int signal, | |
461 | siginfo_t *info); | |
462 | ||
463 | /* Like resume_one_lwp_throw, but no error is thrown if the LWP | |
464 | disappears while we try to resume it. */ | |
465 | void resume_one_lwp (lwp_info *lwp, int step, int signal, siginfo_t *info); | |
466 | ||
467 | /* This function is called once per thread. We check the thread's | |
468 | last resume request, which will tell us whether to resume, step, or | |
469 | leave the thread stopped. Any signal the client requested to be | |
470 | delivered has already been enqueued at this point. | |
471 | ||
472 | If any thread that GDB wants running is stopped at an internal | |
473 | breakpoint that needs stepping over, we start a step-over operation | |
474 | on that particular thread, and leave all others stopped. */ | |
475 | void proceed_one_lwp (thread_info *thread, lwp_info *except); | |
476 | ||
477 | /* This function is called once per thread. We check the thread's | |
478 | resume request, which will tell us whether to resume, step, or | |
479 | leave the thread stopped; and what signal, if any, it should be | |
480 | sent. | |
481 | ||
482 | For threads which we aren't explicitly told otherwise, we preserve | |
483 | the stepping flag; this is used for stepping over gdbserver-placed | |
484 | breakpoints. | |
485 | ||
486 | If pending_flags was set in any thread, we queue any needed | |
487 | signals, since we won't actually resume. We already have a pending | |
488 | event to report, so we don't need to preserve any step requests; | |
489 | they should be re-issued if necessary. */ | |
490 | void resume_one_thread (thread_info *thread, bool leave_all_stopped); | |
491 | ||
492 | /* Return true if this lwp has an interesting status pending. */ | |
493 | bool status_pending_p_callback (thread_info *thread, ptid_t ptid); | |
494 | ||
495 | /* Resume LWPs that are currently stopped without any pending status | |
496 | to report, but are resumed from the core's perspective. */ | |
497 | void resume_stopped_resumed_lwps (thread_info *thread); | |
498 | ||
499 | /* Unsuspend THREAD, except EXCEPT, and proceed. */ | |
500 | void unsuspend_and_proceed_one_lwp (thread_info *thread, lwp_info *except); | |
501 | ||
502 | /* Return true if this lwp still has an interesting status pending. | |
503 | If not (e.g., it had stopped for a breakpoint that is gone), return | |
504 | false. */ | |
505 | bool thread_still_has_status_pending (thread_info *thread); | |
506 | ||
507 | /* Return true if this lwp is to-be-resumed and has an interesting | |
508 | status pending. */ | |
509 | bool resume_status_pending (thread_info *thread); | |
510 | ||
511 | /* Return true if this lwp that GDB wants running is stopped at an | |
512 | internal breakpoint that we need to step over. It assumes that | |
513 | any required STOP_PC adjustment has already been propagated to | |
514 | the inferior's regcache. */ | |
515 | bool thread_needs_step_over (thread_info *thread); | |
516 | ||
517 | /* Single step via hardware or software single step. | |
518 | Return 1 if hardware single stepping, 0 if software single stepping | |
519 | or can't single step. */ | |
520 | int single_step (lwp_info* lwp); | |
521 | ||
b31cdfa6 TBA |
522 | /* Return true if THREAD is doing hardware single step. */ |
523 | bool maybe_hw_step (thread_info *thread); | |
524 | ||
df95181f TBA |
525 | /* Install breakpoints for software single stepping. */ |
526 | void install_software_single_step_breakpoints (lwp_info *lwp); | |
527 | ||
ac1bbaca TBA |
528 | /* Fetch the possibly triggered data watchpoint info and store it in |
529 | CHILD. | |
530 | ||
531 | On some archs, like x86, that use debug registers to set | |
532 | watchpoints, it's possible that the way to know which watched | |
533 | address trapped, is to check the register that is used to select | |
534 | which address to watch. Problem is, between setting the watchpoint | |
535 | and reading back which data address trapped, the user may change | |
536 | the set of watchpoints, and, as a consequence, GDB changes the | |
537 | debug registers in the inferior. To avoid reading back a stale | |
538 | stopped-data-address when that happens, we cache in LP the fact | |
539 | that a watchpoint trapped, and the corresponding data address, as | |
540 | soon as we see CHILD stop with a SIGTRAP. If GDB changes the debug | |
541 | registers meanwhile, we have the cached data we can rely on. */ | |
542 | bool check_stopped_by_watchpoint (lwp_info *child); | |
543 | ||
cb63de7c TBA |
544 | /* Convert a native/host siginfo object, into/from the siginfo in the |
545 | layout of the inferiors' architecture. */ | |
546 | void siginfo_fixup (siginfo_t *siginfo, gdb_byte *inf_siginfo, | |
547 | int direction); | |
548 | ||
fd000fb3 TBA |
549 | /* Add a process to the common process list, and set its private |
550 | data. */ | |
551 | process_info *add_linux_process (int pid, int attached); | |
421490af PA |
552 | |
553 | /* Same as add_linux_process, but don't open the /proc/PID/mem file | |
554 | yet. */ | |
555 | process_info *add_linux_process_no_mem_file (int pid, int attached); | |
fd000fb3 | 556 | |
f551c8ef SM |
557 | /* Free resources associated to PROC and remove it. */ |
558 | void remove_linux_process (process_info *proc); | |
559 | ||
fd000fb3 TBA |
560 | /* Add a new thread. */ |
561 | lwp_info *add_lwp (ptid_t ptid); | |
562 | ||
563 | /* Delete a thread. */ | |
564 | void delete_lwp (lwp_info *lwp); | |
565 | ||
566 | public: /* Make this public because it's used from outside. */ | |
567 | /* Attach to an inferior process. Returns 0 on success, ERRNO on | |
568 | error. */ | |
569 | int attach_lwp (ptid_t ptid); | |
570 | ||
571 | private: /* Back to private. */ | |
572 | /* Detach from LWP. */ | |
573 | void detach_one_lwp (lwp_info *lwp); | |
574 | ||
575 | /* Detect zombie thread group leaders, and "exit" them. We can't | |
576 | reap their exits until all other threads in the group have | |
e8a625d1 PA |
577 | exited. Returns true if we left any new event pending, false |
578 | otherwise. */ | |
579 | bool check_zombie_leaders (); | |
fd000fb3 | 580 | |
48989498 PA |
581 | /* Convenience function that is called when we're about to return an |
582 | event to the core. If the event is an exit or signalled event, | |
583 | then this decides whether to report it as process-wide event, as | |
584 | a thread exit event, or to suppress it. All other event kinds | |
585 | are passed through unmodified. */ | |
fd000fb3 TBA |
586 | ptid_t filter_exit_event (lwp_info *event_child, |
587 | target_waitstatus *ourstatus); | |
588 | ||
13e567af TBA |
589 | /* Returns true if THREAD is stopped in a jump pad, and we can't |
590 | move it out, because we need to report the stop event to GDB. For | |
591 | example, if the user puts a breakpoint in the jump pad, it's | |
592 | because she wants to debug it. */ | |
593 | bool stuck_in_jump_pad (thread_info *thread); | |
594 | ||
595 | /* Convenience wrapper. Returns information about LWP's fast tracepoint | |
596 | collection status. */ | |
597 | fast_tpoint_collect_result linux_fast_tracepoint_collecting | |
598 | (lwp_info *lwp, fast_tpoint_collect_status *status); | |
599 | ||
9eedd27d TBA |
600 | /* This function should only be called if LWP got a SYSCALL_SIGTRAP. |
601 | Fill *SYSNO with the syscall nr trapped. */ | |
602 | void get_syscall_trapinfo (lwp_info *lwp, int *sysno); | |
603 | ||
604 | /* Returns true if GDB is interested in the event_child syscall. | |
605 | Only to be called when stopped reason is SYSCALL_SIGTRAP. */ | |
606 | bool gdb_catch_this_syscall (lwp_info *event_child); | |
607 | ||
ef0478f6 TBA |
608 | protected: |
609 | /* The architecture-specific "low" methods are listed below. */ | |
797bcff5 TBA |
610 | |
611 | /* Architecture-specific setup for the current thread. */ | |
612 | virtual void low_arch_setup () = 0; | |
daca57a7 TBA |
613 | |
614 | /* Return false if we can fetch/store the register, true if we cannot | |
615 | fetch/store the register. */ | |
616 | virtual bool low_cannot_fetch_register (int regno) = 0; | |
617 | ||
618 | virtual bool low_cannot_store_register (int regno) = 0; | |
bd70b1f2 TBA |
619 | |
620 | /* Hook to fetch a register in some non-standard way. Used for | |
621 | example by backends that have read-only registers with hardcoded | |
622 | values (e.g., IA64's gr0/fr0/fr1). Returns true if register | |
623 | REGNO was supplied, false if not, and we should fallback to the | |
624 | standard ptrace methods. */ | |
625 | virtual bool low_fetch_register (regcache *regcache, int regno); | |
bf9ae9d8 TBA |
626 | |
627 | /* Return true if breakpoints are supported. Such targets must | |
628 | implement the GET_PC and SET_PC methods. */ | |
629 | virtual bool low_supports_breakpoints (); | |
630 | ||
631 | virtual CORE_ADDR low_get_pc (regcache *regcache); | |
632 | ||
633 | virtual void low_set_pc (regcache *regcache, CORE_ADDR newpc); | |
7582c77c TBA |
634 | |
635 | /* Find the next possible PCs after the current instruction executes. | |
636 | Targets that override this method should also override | |
637 | 'supports_software_single_step' to return true. */ | |
638 | virtual std::vector<CORE_ADDR> low_get_next_pcs (regcache *regcache); | |
d4807ea2 | 639 | |
d7146cda TBA |
640 | /* Return true if there is a breakpoint at PC. */ |
641 | virtual bool low_breakpoint_at (CORE_ADDR pc) = 0; | |
642 | ||
9db9aa23 TBA |
643 | /* Breakpoint and watchpoint related functions. See target.h for |
644 | comments. */ | |
645 | virtual int low_insert_point (raw_bkpt_type type, CORE_ADDR addr, | |
646 | int size, raw_breakpoint *bp); | |
647 | ||
648 | virtual int low_remove_point (raw_bkpt_type type, CORE_ADDR addr, | |
649 | int size, raw_breakpoint *bp); | |
650 | ||
ac1bbaca TBA |
651 | virtual bool low_stopped_by_watchpoint (); |
652 | ||
653 | virtual CORE_ADDR low_stopped_data_address (); | |
654 | ||
b35db733 TBA |
655 | /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular |
656 | for registers smaller than an xfer unit). */ | |
657 | virtual void low_collect_ptrace_register (regcache *regcache, int regno, | |
658 | char *buf); | |
659 | ||
660 | virtual void low_supply_ptrace_register (regcache *regcache, int regno, | |
661 | const char *buf); | |
662 | ||
cb63de7c TBA |
663 | /* Hook to convert from target format to ptrace format and back. |
664 | Returns true if any conversion was done; false otherwise. | |
665 | If DIRECTION is 1, then copy from INF to NATIVE. | |
666 | If DIRECTION is 0, copy from NATIVE to INF. */ | |
667 | virtual bool low_siginfo_fixup (siginfo_t *native, gdb_byte *inf, | |
668 | int direction); | |
669 | ||
fd000fb3 TBA |
670 | /* Hook to call when a new process is created or attached to. |
671 | If extra per-process architecture-specific data is needed, | |
672 | allocate it here. */ | |
673 | virtual arch_process_info *low_new_process (); | |
674 | ||
675 | /* Hook to call when a process is being deleted. If extra per-process | |
676 | architecture-specific data is needed, delete it here. */ | |
677 | virtual void low_delete_process (arch_process_info *info); | |
678 | ||
679 | /* Hook to call when a new thread is detected. | |
680 | If extra per-thread architecture-specific data is needed, | |
681 | allocate it here. */ | |
682 | virtual void low_new_thread (lwp_info *); | |
683 | ||
684 | /* Hook to call when a thread is being deleted. If extra per-thread | |
685 | architecture-specific data is needed, delete it here. */ | |
686 | virtual void low_delete_thread (arch_lwp_info *); | |
687 | ||
688 | /* Hook to call, if any, when a new fork is attached. */ | |
689 | virtual void low_new_fork (process_info *parent, process_info *child); | |
690 | ||
d7599cc0 TBA |
691 | /* Hook to call prior to resuming a thread. */ |
692 | virtual void low_prepare_to_resume (lwp_info *lwp); | |
693 | ||
13e567af TBA |
694 | /* Fill ADDRP with the thread area address of LWPID. Returns 0 on |
695 | success, -1 on failure. */ | |
696 | virtual int low_get_thread_area (int lwpid, CORE_ADDR *addrp); | |
697 | ||
9cfd8715 TBA |
698 | /* Returns true if the low target supports range stepping. */ |
699 | virtual bool low_supports_range_stepping (); | |
700 | ||
9eedd27d TBA |
701 | /* Return true if the target supports catch syscall. Such targets |
702 | override the low_get_syscall_trapinfo method below. */ | |
703 | virtual bool low_supports_catch_syscall (); | |
704 | ||
705 | /* Fill *SYSNO with the syscall nr trapped. Only to be called when | |
706 | inferior is stopped due to SYSCALL_SIGTRAP. */ | |
707 | virtual void low_get_syscall_trapinfo (regcache *regcache, int *sysno); | |
708 | ||
d4807ea2 TBA |
709 | /* How many bytes the PC should be decremented after a break. */ |
710 | virtual int low_decr_pc_after_break (); | |
5ef9273d TBA |
711 | }; |
712 | ||
ef0478f6 TBA |
713 | extern linux_process_target *the_linux_target; |
714 | ||
6afd337d | 715 | #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr))) |
f7667f0d | 716 | #define get_lwp_thread(lwp) ((lwp)->thread) |
0d62e5e8 | 717 | |
013e3554 TBA |
718 | /* Information about a signal that is to be delivered to a thread. */ |
719 | ||
720 | struct pending_signal | |
721 | { | |
722 | pending_signal (int signal) | |
723 | : signal {signal} | |
724 | {}; | |
725 | ||
726 | int signal; | |
727 | siginfo_t info; | |
728 | }; | |
729 | ||
d86d4aaf DE |
730 | /* This struct is recorded in the target_data field of struct thread_info. |
731 | ||
732 | On linux ``all_threads'' is keyed by the LWP ID, which we use as the | |
733 | GDB protocol representation of the thread ID. Threads also have | |
734 | a "process ID" (poorly named) which is (presently) the same as the | |
735 | LWP ID. | |
736 | ||
737 | There is also ``all_processes'' is keyed by the "overall process ID", | |
738 | which GNU/Linux calls tgid, "thread group ID". */ | |
739 | ||
54a0b537 | 740 | struct lwp_info |
0d62e5e8 | 741 | { |
393a6b59 PA |
742 | /* If this LWP is a fork/vfork/clone child that wasn't reported to |
743 | GDB yet, return its parent, else nullptr. */ | |
7b961964 SM |
744 | lwp_info *pending_parent () const |
745 | { | |
393a6b59 | 746 | if (this->relative == nullptr) |
7b961964 SM |
747 | return nullptr; |
748 | ||
393a6b59 | 749 | gdb_assert (this->relative->relative == this); |
7b961964 | 750 | |
393a6b59 | 751 | /* In a parent/child relationship, the parent has a status pending and |
7b961964 SM |
752 | the child does not, and a thread can only be in one such relationship |
753 | at most. So we can recognize who is the parent based on which one has | |
754 | a pending status. */ | |
755 | gdb_assert (!!this->status_pending_p | |
393a6b59 | 756 | != !!this->relative->status_pending_p); |
7b961964 | 757 | |
393a6b59 | 758 | if (!this->relative->status_pending_p) |
7b961964 SM |
759 | return nullptr; |
760 | ||
761 | const target_waitstatus &ws | |
393a6b59 | 762 | = this->relative->waitstatus; |
7b961964 | 763 | gdb_assert (ws.kind () == TARGET_WAITKIND_FORKED |
faf44a31 PA |
764 | || ws.kind () == TARGET_WAITKIND_VFORKED |
765 | || ws.kind () == TARGET_WAITKIND_THREAD_CLONED); | |
7b961964 | 766 | |
393a6b59 | 767 | return this->relative; } |
7b961964 | 768 | |
393a6b59 | 769 | /* If this LWP is the parent of a fork/vfork/clone child we haven't |
faf44a31 PA |
770 | reported to GDB yet, return that child and fill in KIND with the |
771 | matching waitkind, otherwise nullptr. */ | |
772 | lwp_info *pending_child (target_waitkind *kind) const | |
df5ad102 | 773 | { |
393a6b59 | 774 | if (this->relative == nullptr) |
df5ad102 SM |
775 | return nullptr; |
776 | ||
393a6b59 | 777 | gdb_assert (this->relative->relative == this); |
df5ad102 | 778 | |
393a6b59 | 779 | /* In a parent/child relationship, the parent has a status pending and |
df5ad102 SM |
780 | the child does not, and a thread can only be in one such relationship |
781 | at most. So we can recognize who is the parent based on which one has | |
782 | a pending status. */ | |
783 | gdb_assert (!!this->status_pending_p | |
393a6b59 | 784 | != !!this->relative->status_pending_p); |
df5ad102 SM |
785 | |
786 | if (!this->status_pending_p) | |
787 | return nullptr; | |
788 | ||
789 | const target_waitstatus &ws = this->waitstatus; | |
790 | gdb_assert (ws.kind () == TARGET_WAITKIND_FORKED | |
faf44a31 PA |
791 | || ws.kind () == TARGET_WAITKIND_VFORKED |
792 | || ws.kind () == TARGET_WAITKIND_THREAD_CLONED); | |
df5ad102 | 793 | |
faf44a31 | 794 | *kind = ws.kind (); |
393a6b59 | 795 | return this->relative; |
df5ad102 SM |
796 | } |
797 | ||
d86d4aaf | 798 | /* Backlink to the parent object. */ |
c360a473 | 799 | struct thread_info *thread = nullptr; |
f7667f0d | 800 | |
ae13219e DJ |
801 | /* If this flag is set, the next SIGSTOP will be ignored (the |
802 | process will be immediately resumed). This means that either we | |
803 | sent the SIGSTOP to it ourselves and got some other pending event | |
804 | (so the SIGSTOP is still pending), or that we stopped the | |
805 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
806 | yet. */ | |
c360a473 | 807 | int stop_expected = 0; |
0d62e5e8 | 808 | |
d50171e4 PA |
809 | /* When this is true, we shall not try to resume this thread, even |
810 | if last_resume_kind isn't resume_stop. */ | |
c360a473 | 811 | int suspended = 0; |
bd99dc85 PA |
812 | |
813 | /* If this flag is set, the lwp is known to be stopped right now (stop | |
0d62e5e8 | 814 | event already received in a wait()). */ |
c360a473 | 815 | int stopped = 0; |
0d62e5e8 | 816 | |
82075af2 JS |
817 | /* Signal whether we are in a SYSCALL_ENTRY or |
818 | in a SYSCALL_RETURN event. | |
819 | Values: | |
820 | - TARGET_WAITKIND_SYSCALL_ENTRY | |
821 | - TARGET_WAITKIND_SYSCALL_RETURN */ | |
c360a473 | 822 | enum target_waitkind syscall_state = TARGET_WAITKIND_SYSCALL_ENTRY; |
82075af2 | 823 | |
bd99dc85 | 824 | /* When stopped is set, the last wait status recorded for this lwp. */ |
c360a473 | 825 | int last_status = 0; |
32ca6d61 | 826 | |
00db26fa PA |
827 | /* If WAITSTATUS->KIND != TARGET_WAITKIND_IGNORE, the waitstatus for |
828 | this LWP's last event, to pass to GDB without any further | |
829 | processing. This is used to store extended ptrace event | |
830 | information or exit status until it can be reported to GDB. */ | |
de0d863e DB |
831 | struct target_waitstatus waitstatus; |
832 | ||
393a6b59 PA |
833 | /* A pointer to the fork/vfork/clone child/parent relative (like |
834 | people, LWPs have relatives). Valid only while the parent | |
835 | fork/vfork/clone event is not reported to higher layers. Used to | |
836 | avoid wildcard vCont actions resuming a fork/vfork/clone child | |
837 | before GDB is notified about the parent's fork/vfork/clone | |
838 | event. */ | |
839 | struct lwp_info *relative = nullptr; | |
5a04c4cf | 840 | |
582511be PA |
841 | /* When stopped is set, this is where the lwp last stopped, with |
842 | decr_pc_after_break already accounted for. If the LWP is | |
843 | running, this is the address at which the lwp was resumed. */ | |
c360a473 | 844 | CORE_ADDR stop_pc = 0; |
d50171e4 | 845 | |
0d62e5e8 DJ |
846 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
847 | been reported. */ | |
c360a473 SM |
848 | int status_pending_p = 0; |
849 | int status_pending = 0; | |
0d62e5e8 | 850 | |
582511be PA |
851 | /* The reason the LWP last stopped, if we need to track it |
852 | (breakpoint, watchpoint, etc.) */ | |
c360a473 | 853 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
c3adc08c PA |
854 | |
855 | /* On architectures where it is possible to know the data address of | |
856 | a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and | |
857 | contains such data address. Only valid if STOPPED_BY_WATCHPOINT | |
858 | is true. */ | |
c360a473 | 859 | CORE_ADDR stopped_data_address = 0; |
c3adc08c | 860 | |
0d62e5e8 DJ |
861 | /* If this is non-zero, it is a breakpoint to be reinserted at our next |
862 | stop (SIGTRAP stops only). */ | |
c360a473 | 863 | CORE_ADDR bp_reinsert = 0; |
0d62e5e8 | 864 | |
d50171e4 PA |
865 | /* If this flag is set, the last continue operation at the ptrace |
866 | level on this process was a single-step. */ | |
c360a473 | 867 | int stepping = 0; |
0d62e5e8 | 868 | |
c2d6af84 PA |
869 | /* Range to single step within. This is a copy of the step range |
870 | passed along the last resume request. See 'struct | |
871 | thread_resume'. */ | |
c360a473 SM |
872 | CORE_ADDR step_range_start = 0; /* Inclusive */ |
873 | CORE_ADDR step_range_end = 0; /* Exclusive */ | |
c2d6af84 | 874 | |
a6dbe5df PA |
875 | /* If this flag is set, we need to set the event request flags the |
876 | next time we see this LWP stop. */ | |
c360a473 | 877 | int must_set_ptrace_flags = 0; |
a6dbe5df | 878 | |
013e3554 TBA |
879 | /* A chain of signals that need to be delivered to this process. */ |
880 | std::list<pending_signal> pending_signals; | |
5544ad89 DJ |
881 | |
882 | /* A link used when resuming. It is initialized from the resume request, | |
54a0b537 | 883 | and then processed and cleared in linux_resume_one_lwp. */ |
c360a473 | 884 | struct thread_resume *resume = nullptr; |
dae5f5cf | 885 | |
229d26fc SM |
886 | /* Information bout this lwp's fast tracepoint collection status (is it |
887 | currently stopped in the jump pad, and if so, before or at/after the | |
888 | relocated instruction). Normally, we won't care about this, but we will | |
889 | if a signal arrives to this lwp while it is collecting. */ | |
c360a473 SM |
890 | fast_tpoint_collect_result collecting_fast_tracepoint |
891 | = fast_tpoint_collect_result::not_collecting; | |
fa593d66 | 892 | |
013e3554 TBA |
893 | /* A chain of signals that need to be reported to GDB. These were |
894 | deferred because the thread was doing a fast tracepoint collect | |
895 | when they arrived. */ | |
896 | std::list<pending_signal> pending_signals_to_report; | |
fa593d66 PA |
897 | |
898 | /* When collecting_fast_tracepoint is first found to be 1, we insert | |
899 | a exit-jump-pad-quickly breakpoint. This is it. */ | |
c360a473 | 900 | struct breakpoint *exit_jump_pad_bkpt = nullptr; |
fa593d66 | 901 | |
04f5fe89 | 902 | #ifdef USE_THREAD_DB |
c360a473 | 903 | int thread_known = 0; |
24a09b5f DJ |
904 | /* The thread handle, used for e.g. TLS access. Only valid if |
905 | THREAD_KNOWN is set. */ | |
c360a473 | 906 | td_thrhandle_t th {}; |
f6327dcb KB |
907 | |
908 | /* The pthread_t handle. */ | |
c360a473 | 909 | thread_t thread_handle {}; |
dae5f5cf | 910 | #endif |
aa5ca48f DE |
911 | |
912 | /* Arch-specific additions. */ | |
c360a473 | 913 | struct arch_lwp_info *arch_private = nullptr; |
0d62e5e8 | 914 | }; |
5544ad89 | 915 | |
214d508e | 916 | int linux_pid_exe_is_elf_64_file (int pid, unsigned int *machine); |
d0722149 | 917 | |
7ae1a6a6 PA |
918 | /* Attach to PTID. Returns 0 on success, non-zero otherwise (an |
919 | errno). */ | |
920 | int linux_attach_lwp (ptid_t ptid); | |
921 | ||
cdbfd419 | 922 | struct lwp_info *find_lwp_pid (ptid_t ptid); |
b2f7c7e8 | 923 | /* For linux_stop_lwp see nat/linux-nat.h. */ |
0d62e5e8 | 924 | |
3aee8918 PA |
925 | #ifdef HAVE_LINUX_REGSETS |
926 | void initialize_regsets_info (struct regsets_info *regsets_info); | |
927 | #endif | |
928 | ||
929 | void initialize_low_arch (void); | |
930 | ||
276d4552 YQ |
931 | void linux_set_pc_32bit (struct regcache *regcache, CORE_ADDR pc); |
932 | CORE_ADDR linux_get_pc_32bit (struct regcache *regcache); | |
933 | ||
6f69e520 YQ |
934 | void linux_set_pc_64bit (struct regcache *regcache, CORE_ADDR pc); |
935 | CORE_ADDR linux_get_pc_64bit (struct regcache *regcache); | |
936 | ||
cdbfd419 | 937 | /* From thread-db.c */ |
9b4c5f87 | 938 | int thread_db_init (void); |
8336d594 PA |
939 | void thread_db_detach (struct process_info *); |
940 | void thread_db_mourn (struct process_info *); | |
cdbfd419 | 941 | int thread_db_handle_monitor_command (char *); |
dae5f5cf DJ |
942 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
943 | CORE_ADDR load_module, CORE_ADDR *address); | |
9836d6ea | 944 | int thread_db_look_up_one_symbol (const char *name, CORE_ADDR *addrp); |
ded48a5e | 945 | |
86299109 KB |
946 | /* Called from linux-low.c when a clone event is detected. Upon entry, |
947 | both the clone and the parent should be stopped. This function does | |
948 | whatever is required have the clone under thread_db's control. */ | |
949 | ||
94c207e0 | 950 | void thread_db_notice_clone (struct thread_info *parent_thr, ptid_t child_ptid); |
86299109 | 951 | |
f6327dcb KB |
952 | bool thread_db_thread_handle (ptid_t ptid, gdb_byte **handle, int *handle_len); |
953 | ||
ded48a5e | 954 | extern int have_ptrace_getregset; |
1a5c2598 | 955 | |
43e5fbd8 TJB |
956 | /* Search for the value with type MATCH in the auxv vector, with entries of |
957 | length WORDSIZE bytes, of process with pid PID. If found, store the | |
958 | value in *VALP and return 1. If not found or if there is an error, | |
959 | return 0. */ | |
0570503d | 960 | |
43e5fbd8 | 961 | int linux_get_auxv (int pid, int wordsize, CORE_ADDR match, CORE_ADDR *valp); |
0570503d | 962 | |
974c89e0 | 963 | /* Fetch the AT_HWCAP entry from the auxv vector, where entries are length |
43e5fbd8 | 964 | WORDSIZE, of process with pid PID. If no entry was found, return 0. */ |
974c89e0 | 965 | |
43e5fbd8 | 966 | CORE_ADDR linux_get_hwcap (int pid, int wordsize); |
974c89e0 AH |
967 | |
968 | /* Fetch the AT_HWCAP2 entry from the auxv vector, where entries are length | |
43e5fbd8 | 969 | WORDSIZE, of process with pid PID. If no entry was found, return 0. */ |
974c89e0 | 970 | |
43e5fbd8 | 971 | CORE_ADDR linux_get_hwcap2 (int pid, int wordsize); |
974c89e0 | 972 | |
1a5c2598 | 973 | #endif /* GDBSERVER_LINUX_LOW_H */ |