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58caa3dc | 1 | /* Internal interfaces for the GNU/Linux specific target code for gdbserver. |
b811d2c2 | 2 | Copyright (C) 2002-2020 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" |
15c66dd6 | 31 | #include "target/waitstatus.h" /* For enum target_stop_reason. */ |
229d26fc | 32 | #include "tracepoint.h" |
96d7229d | 33 | |
f15f9948 TJB |
34 | #define PTRACE_XFER_TYPE long |
35 | ||
58caa3dc | 36 | #ifdef HAVE_LINUX_REGSETS |
442ea881 PA |
37 | typedef void (*regset_fill_func) (struct regcache *, void *); |
38 | typedef void (*regset_store_func) (struct regcache *, const void *); | |
0d62e5e8 DJ |
39 | enum regset_type { |
40 | GENERAL_REGS, | |
41 | FP_REGS, | |
42 | EXTENDED_REGS, | |
1ef53e6b | 43 | OPTIONAL_REGS, /* Do not error if the regset cannot be accessed. */ |
0d62e5e8 DJ |
44 | }; |
45 | ||
50bc912a PA |
46 | /* The arch's regsets array initializer must be terminated with a NULL |
47 | regset. */ | |
48 | #define NULL_REGSET \ | |
49 | { 0, 0, 0, -1, (enum regset_type) -1, NULL, NULL } | |
50 | ||
58caa3dc DJ |
51 | struct regset_info |
52 | { | |
53 | int get_request, set_request; | |
1570b33e L |
54 | /* If NT_TYPE isn't 0, it will be passed to ptrace as the 3rd |
55 | argument and the 4th argument should be "const struct iovec *". */ | |
56 | int nt_type; | |
58caa3dc | 57 | int size; |
0d62e5e8 DJ |
58 | enum regset_type type; |
59 | regset_fill_func fill_function; | |
60 | regset_store_func store_function; | |
58caa3dc | 61 | }; |
3aee8918 PA |
62 | |
63 | /* Aggregation of all the supported regsets of a given | |
64 | architecture/mode. */ | |
65 | ||
66 | struct regsets_info | |
67 | { | |
68 | /* The regsets array. */ | |
69 | struct regset_info *regsets; | |
70 | ||
71 | /* The number of regsets in the REGSETS array. */ | |
72 | int num_regsets; | |
73 | ||
74 | /* If we get EIO on a regset, do not try it again. Note the set of | |
75 | supported regsets may depend on processor mode on biarch | |
030031ee PA |
76 | machines. This is a (lazily allocated) array holding one boolean |
77 | byte (0/1) per regset, with each element corresponding to the | |
78 | regset in the REGSETS array above at the same offset. */ | |
3aee8918 PA |
79 | char *disabled_regsets; |
80 | }; | |
81 | ||
82 | #endif | |
83 | ||
84 | /* Mapping between the general-purpose registers in `struct user' | |
85 | format and GDB's register array layout. */ | |
86 | ||
87 | struct usrregs_info | |
88 | { | |
89 | /* The number of registers accessible. */ | |
90 | int num_regs; | |
91 | ||
92 | /* The registers map. */ | |
93 | int *regmap; | |
94 | }; | |
95 | ||
96 | /* All info needed to access an architecture/mode's registers. */ | |
97 | ||
98 | struct regs_info | |
99 | { | |
100 | /* Regset support bitmap: 1 for registers that are transferred as a part | |
101 | of a regset, 0 for ones that need to be handled individually. This | |
102 | can be NULL if all registers are transferred with regsets or regsets | |
103 | are not supported. */ | |
104 | unsigned char *regset_bitmap; | |
105 | ||
106 | /* Info used when accessing registers with PTRACE_PEEKUSER / | |
107 | PTRACE_POKEUSER. This can be NULL if all registers are | |
108 | transferred with regsets .*/ | |
109 | struct usrregs_info *usrregs; | |
110 | ||
111 | #ifdef HAVE_LINUX_REGSETS | |
112 | /* Info used when accessing registers with regsets. */ | |
113 | struct regsets_info *regsets_info; | |
58caa3dc | 114 | #endif |
3aee8918 | 115 | }; |
2ec06d2e | 116 | |
95954743 PA |
117 | struct process_info_private |
118 | { | |
aa5ca48f DE |
119 | /* Arch-specific additions. */ |
120 | struct arch_process_info *arch_private; | |
cdbfd419 PP |
121 | |
122 | /* libthread_db-specific additions. Not NULL if this process has loaded | |
123 | thread_db, and it is active. */ | |
124 | struct thread_db *thread_db; | |
2268b414 JK |
125 | |
126 | /* &_r_debug. 0 if not yet determined. -1 if no PT_DYNAMIC in Phdrs. */ | |
127 | CORE_ADDR r_debug; | |
95954743 PA |
128 | }; |
129 | ||
aa5ca48f DE |
130 | struct lwp_info; |
131 | ||
2ec06d2e DJ |
132 | struct linux_target_ops |
133 | { | |
d05b4ac3 UW |
134 | /* Architecture-specific setup. */ |
135 | void (*arch_setup) (void); | |
136 | ||
3aee8918 | 137 | const struct regs_info *(*regs_info) (void); |
2ec06d2e | 138 | int (*cannot_fetch_register) (int); |
bc1e36ca DJ |
139 | |
140 | /* Returns 0 if we can store the register, 1 if we can not | |
141 | store the register, and 2 if failure to store the register | |
142 | is acceptable. */ | |
2ec06d2e | 143 | int (*cannot_store_register) (int); |
c14dfd32 PA |
144 | |
145 | /* Hook to fetch a register in some non-standard way. Used for | |
146 | example by backends that have read-only registers with hardcoded | |
147 | values (e.g., IA64's gr0/fr0/fr1). Returns true if register | |
148 | REGNO was supplied, false if not, and we should fallback to the | |
149 | standard ptrace methods. */ | |
150 | int (*fetch_register) (struct regcache *regcache, int regno); | |
151 | ||
442ea881 PA |
152 | CORE_ADDR (*get_pc) (struct regcache *regcache); |
153 | void (*set_pc) (struct regcache *regcache, CORE_ADDR newpc); | |
dd373349 AT |
154 | |
155 | /* See target.h for details. */ | |
156 | int (*breakpoint_kind_from_pc) (CORE_ADDR *pcptr); | |
157 | ||
158 | /* See target.h for details. */ | |
159 | const gdb_byte *(*sw_breakpoint_from_kind) (int kind, int *size); | |
160 | ||
fa5308bd | 161 | /* Find the next possible PCs after the current instruction executes. */ |
a0ff9e1a | 162 | std::vector<CORE_ADDR> (*get_next_pcs) (struct regcache *regcache); |
0d62e5e8 | 163 | |
0d62e5e8 DJ |
164 | int decr_pc_after_break; |
165 | int (*breakpoint_at) (CORE_ADDR pc); | |
e013ee27 | 166 | |
d993e290 PA |
167 | /* Breakpoint and watchpoint related functions. See target.h for |
168 | comments. */ | |
802e8e6d PA |
169 | int (*supports_z_point_type) (char z_type); |
170 | int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr, | |
171 | int size, struct raw_breakpoint *bp); | |
172 | int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr, | |
173 | int size, struct raw_breakpoint *bp); | |
174 | ||
e013ee27 OF |
175 | int (*stopped_by_watchpoint) (void); |
176 | CORE_ADDR (*stopped_data_address) (void); | |
177 | ||
ee1a7ae4 UW |
178 | /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular |
179 | for registers smaller than an xfer unit). */ | |
442ea881 PA |
180 | void (*collect_ptrace_register) (struct regcache *regcache, |
181 | int regno, char *buf); | |
182 | void (*supply_ptrace_register) (struct regcache *regcache, | |
183 | int regno, const char *buf); | |
d0722149 DE |
184 | |
185 | /* Hook to convert from target format to ptrace format and back. | |
186 | Returns true if any conversion was done; false otherwise. | |
187 | If DIRECTION is 1, then copy from INF to NATIVE. | |
188 | If DIRECTION is 0, copy from NATIVE to INF. */ | |
8adce034 | 189 | int (*siginfo_fixup) (siginfo_t *native, gdb_byte *inf, int direction); |
aa5ca48f DE |
190 | |
191 | /* Hook to call when a new process is created or attached to. | |
192 | If extra per-process architecture-specific data is needed, | |
193 | allocate it here. */ | |
194 | struct arch_process_info * (*new_process) (void); | |
195 | ||
04ec7890 SM |
196 | /* Hook to call when a process is being deleted. If extra per-process |
197 | architecture-specific data is needed, delete it here. */ | |
198 | void (*delete_process) (struct arch_process_info *info); | |
199 | ||
aa5ca48f DE |
200 | /* Hook to call when a new thread is detected. |
201 | If extra per-thread architecture-specific data is needed, | |
202 | allocate it here. */ | |
34c703da | 203 | void (*new_thread) (struct lwp_info *); |
aa5ca48f | 204 | |
466eecee SM |
205 | /* Hook to call when a thread is being deleted. If extra per-thread |
206 | architecture-specific data is needed, delete it here. */ | |
207 | void (*delete_thread) (struct arch_lwp_info *); | |
208 | ||
3a8a0396 DB |
209 | /* Hook to call, if any, when a new fork is attached. */ |
210 | void (*new_fork) (struct process_info *parent, struct process_info *child); | |
211 | ||
aa5ca48f DE |
212 | /* Hook to call prior to resuming a thread. */ |
213 | void (*prepare_to_resume) (struct lwp_info *); | |
1570b33e L |
214 | |
215 | /* Hook to support target specific qSupported. */ | |
06e03fff | 216 | void (*process_qsupported) (char **, int count); |
219f2f23 PA |
217 | |
218 | /* Returns true if the low target supports tracepoints. */ | |
219 | int (*supports_tracepoints) (void); | |
fa593d66 PA |
220 | |
221 | /* Fill ADDRP with the thread area address of LWPID. Returns 0 on | |
222 | success, -1 on failure. */ | |
223 | int (*get_thread_area) (int lwpid, CORE_ADDR *addrp); | |
224 | ||
225 | /* Install a fast tracepoint jump pad. See target.h for | |
226 | comments. */ | |
227 | int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr, | |
228 | CORE_ADDR collector, | |
229 | CORE_ADDR lockaddr, | |
230 | ULONGEST orig_size, | |
231 | CORE_ADDR *jump_entry, | |
405f8e94 SS |
232 | CORE_ADDR *trampoline, |
233 | ULONGEST *trampoline_size, | |
fa593d66 PA |
234 | unsigned char *jjump_pad_insn, |
235 | ULONGEST *jjump_pad_insn_size, | |
236 | CORE_ADDR *adjusted_insn_addr, | |
405f8e94 SS |
237 | CORE_ADDR *adjusted_insn_addr_end, |
238 | char *err); | |
6a271cae PA |
239 | |
240 | /* Return the bytecode operations vector for the current inferior. | |
241 | Returns NULL if bytecode compilation is not supported. */ | |
242 | struct emit_ops *(*emit_ops) (void); | |
405f8e94 SS |
243 | |
244 | /* Return the minimum length of an instruction that can be safely overwritten | |
245 | for use as a fast tracepoint. */ | |
246 | int (*get_min_fast_tracepoint_insn_len) (void); | |
247 | ||
c2d6af84 PA |
248 | /* Returns true if the low target supports range stepping. */ |
249 | int (*supports_range_stepping) (void); | |
769ef81f AT |
250 | |
251 | /* See target.h. */ | |
252 | int (*breakpoint_kind_from_current_state) (CORE_ADDR *pcptr); | |
7d00775e AT |
253 | |
254 | /* See target.h. */ | |
255 | int (*supports_hardware_single_step) (void); | |
82075af2 | 256 | |
4cc32bec YQ |
257 | /* Fill *SYSNO with the syscall nr trapped. Only to be called when |
258 | inferior is stopped due to SYSCALL_SIGTRAP. */ | |
259 | void (*get_syscall_trapinfo) (struct regcache *regcache, int *sysno); | |
ae91f625 MK |
260 | |
261 | /* See target.h. */ | |
262 | int (*get_ipa_tdesc_idx) (void); | |
2ec06d2e DJ |
263 | }; |
264 | ||
265 | extern struct linux_target_ops the_low_target; | |
0d62e5e8 | 266 | |
5ef9273d TBA |
267 | /* Target ops definitions for a Linux target. */ |
268 | ||
269 | class linux_process_target : public process_target | |
270 | { | |
271 | public: | |
272 | ||
15295543 TBA |
273 | int create_inferior (const char *program, |
274 | const std::vector<char *> &program_args) override; | |
6dee9afb TBA |
275 | |
276 | void post_create_inferior () override; | |
ef03dad8 TBA |
277 | |
278 | int attach (unsigned long pid) override; | |
c6885a57 TBA |
279 | |
280 | int kill (process_info *proc) override; | |
9061c9cf TBA |
281 | |
282 | int detach (process_info *proc) override; | |
8adb37b9 TBA |
283 | |
284 | void mourn (process_info *proc) override; | |
95a49a39 TBA |
285 | |
286 | void join (int pid) override; | |
13d3d99b TBA |
287 | |
288 | bool thread_alive (ptid_t pid) override; | |
0e4d7e35 TBA |
289 | |
290 | void resume (thread_resume *resume_info, size_t n) override; | |
6532e7e3 TBA |
291 | |
292 | ptid_t wait (ptid_t ptid, target_waitstatus *status, | |
293 | int options) override; | |
a5a4d4cd TBA |
294 | |
295 | void fetch_registers (regcache *regcache, int regno) override; | |
296 | ||
297 | void store_registers (regcache *regcache, int regno) override; | |
79b44087 TBA |
298 | |
299 | int prepare_to_access_memory () override; | |
300 | ||
301 | void done_accessing_memory () override; | |
e2558df3 TBA |
302 | |
303 | int read_memory (CORE_ADDR memaddr, unsigned char *myaddr, | |
304 | int len) override; | |
305 | ||
306 | int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
307 | int len) override; | |
2a31c7aa TBA |
308 | |
309 | void look_up_symbols () override; | |
eb497a2a TBA |
310 | |
311 | void request_interrupt () override; | |
eac215cc TBA |
312 | |
313 | bool supports_read_auxv () override; | |
314 | ||
315 | int read_auxv (CORE_ADDR offset, unsigned char *myaddr, | |
316 | unsigned int len) override; | |
a2b2297a TBA |
317 | |
318 | bool supports_z_point_type (char z_type) override; | |
7e0bde70 TBA |
319 | |
320 | int insert_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
321 | int size, raw_breakpoint *bp) override; | |
322 | ||
323 | int remove_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
324 | int size, raw_breakpoint *bp) override; | |
84320c4e TBA |
325 | |
326 | bool stopped_by_sw_breakpoint () override; | |
327 | ||
328 | bool supports_stopped_by_sw_breakpoint () override; | |
93fe88b2 TBA |
329 | |
330 | bool stopped_by_hw_breakpoint () override; | |
331 | ||
332 | bool supports_stopped_by_hw_breakpoint () override; | |
22aa6223 TBA |
333 | |
334 | bool supports_hardware_single_step () override; | |
6eeb5c55 TBA |
335 | |
336 | bool stopped_by_watchpoint () override; | |
337 | ||
338 | CORE_ADDR stopped_data_address () override; | |
5203ae1e TBA |
339 | |
340 | bool supports_read_offsets () override; | |
341 | ||
342 | int read_offsets (CORE_ADDR *text, CORE_ADDR *data) override; | |
6e3fd7e9 TBA |
343 | |
344 | bool supports_get_tls_address () override; | |
345 | ||
346 | int get_tls_address (thread_info *thread, CORE_ADDR offset, | |
347 | CORE_ADDR load_module, CORE_ADDR *address) override; | |
2d0795ee TBA |
348 | |
349 | bool supports_qxfer_osdata () override; | |
350 | ||
351 | int qxfer_osdata (const char *annex, unsigned char *readbuf, | |
352 | unsigned const char *writebuf, | |
353 | CORE_ADDR offset, int len) override; | |
d7abedf7 TBA |
354 | |
355 | bool supports_qxfer_siginfo () override; | |
356 | ||
357 | int qxfer_siginfo (const char *annex, unsigned char *readbuf, | |
358 | unsigned const char *writebuf, | |
359 | CORE_ADDR offset, int len) override; | |
0dc587d4 TBA |
360 | |
361 | bool supports_non_stop () override; | |
362 | ||
363 | bool async (bool enable) override; | |
364 | ||
365 | int start_non_stop (bool enable) override; | |
652aef77 TBA |
366 | |
367 | bool supports_multi_process () override; | |
9690a72a TBA |
368 | |
369 | bool supports_fork_events () override; | |
370 | ||
371 | bool supports_vfork_events () override; | |
372 | ||
373 | bool supports_exec_events () override; | |
fb00dfce TBA |
374 | |
375 | void handle_new_gdb_connection () override; | |
55cf3021 TBA |
376 | |
377 | int handle_monitor_command (char *mon) override; | |
95a45fc1 TBA |
378 | |
379 | int core_of_thread (ptid_t ptid) override; | |
9da41fda TBA |
380 | |
381 | #if defined PT_GETDSBT || defined PTRACE_GETFDPIC | |
382 | bool supports_read_loadmap () override; | |
383 | ||
384 | int read_loadmap (const char *annex, CORE_ADDR offset, | |
385 | unsigned char *myaddr, unsigned int len) override; | |
386 | #endif | |
0df28b1b TBA |
387 | |
388 | void process_qsupported (char **features, int count) override; | |
290732bf TBA |
389 | |
390 | bool supports_tracepoints () override; | |
770d8f6a TBA |
391 | |
392 | CORE_ADDR read_pc (regcache *regcache) override; | |
393 | ||
394 | void write_pc (regcache *regcache, CORE_ADDR pc) override; | |
68119632 TBA |
395 | |
396 | bool supports_thread_stopped () override; | |
397 | ||
398 | bool thread_stopped (thread_info *thread) override; | |
5ef9273d TBA |
399 | }; |
400 | ||
6afd337d | 401 | #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr))) |
f7667f0d | 402 | #define get_lwp_thread(lwp) ((lwp)->thread) |
0d62e5e8 | 403 | |
d86d4aaf DE |
404 | /* This struct is recorded in the target_data field of struct thread_info. |
405 | ||
406 | On linux ``all_threads'' is keyed by the LWP ID, which we use as the | |
407 | GDB protocol representation of the thread ID. Threads also have | |
408 | a "process ID" (poorly named) which is (presently) the same as the | |
409 | LWP ID. | |
410 | ||
411 | There is also ``all_processes'' is keyed by the "overall process ID", | |
412 | which GNU/Linux calls tgid, "thread group ID". */ | |
413 | ||
54a0b537 | 414 | struct lwp_info |
0d62e5e8 | 415 | { |
d86d4aaf | 416 | /* Backlink to the parent object. */ |
f7667f0d DE |
417 | struct thread_info *thread; |
418 | ||
ae13219e DJ |
419 | /* If this flag is set, the next SIGSTOP will be ignored (the |
420 | process will be immediately resumed). This means that either we | |
421 | sent the SIGSTOP to it ourselves and got some other pending event | |
422 | (so the SIGSTOP is still pending), or that we stopped the | |
423 | inferior implicitly via PTRACE_ATTACH and have not waited for it | |
424 | yet. */ | |
0d62e5e8 DJ |
425 | int stop_expected; |
426 | ||
d50171e4 PA |
427 | /* When this is true, we shall not try to resume this thread, even |
428 | if last_resume_kind isn't resume_stop. */ | |
bd99dc85 PA |
429 | int suspended; |
430 | ||
431 | /* If this flag is set, the lwp is known to be stopped right now (stop | |
0d62e5e8 DJ |
432 | event already received in a wait()). */ |
433 | int stopped; | |
434 | ||
82075af2 JS |
435 | /* Signal whether we are in a SYSCALL_ENTRY or |
436 | in a SYSCALL_RETURN event. | |
437 | Values: | |
438 | - TARGET_WAITKIND_SYSCALL_ENTRY | |
439 | - TARGET_WAITKIND_SYSCALL_RETURN */ | |
440 | enum target_waitkind syscall_state; | |
441 | ||
bd99dc85 | 442 | /* When stopped is set, the last wait status recorded for this lwp. */ |
32ca6d61 DJ |
443 | int last_status; |
444 | ||
00db26fa PA |
445 | /* If WAITSTATUS->KIND != TARGET_WAITKIND_IGNORE, the waitstatus for |
446 | this LWP's last event, to pass to GDB without any further | |
447 | processing. This is used to store extended ptrace event | |
448 | information or exit status until it can be reported to GDB. */ | |
de0d863e DB |
449 | struct target_waitstatus waitstatus; |
450 | ||
5a04c4cf PA |
451 | /* A pointer to the fork child/parent relative. Valid only while |
452 | the parent fork event is not reported to higher layers. Used to | |
453 | avoid wildcard vCont actions resuming a fork child before GDB is | |
454 | notified about the parent's fork event. */ | |
455 | struct lwp_info *fork_relative; | |
456 | ||
582511be PA |
457 | /* When stopped is set, this is where the lwp last stopped, with |
458 | decr_pc_after_break already accounted for. If the LWP is | |
459 | running, this is the address at which the lwp was resumed. */ | |
d50171e4 PA |
460 | CORE_ADDR stop_pc; |
461 | ||
0d62e5e8 DJ |
462 | /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet |
463 | been reported. */ | |
464 | int status_pending_p; | |
465 | int status_pending; | |
466 | ||
582511be PA |
467 | /* The reason the LWP last stopped, if we need to track it |
468 | (breakpoint, watchpoint, etc.) */ | |
15c66dd6 | 469 | enum target_stop_reason stop_reason; |
c3adc08c PA |
470 | |
471 | /* On architectures where it is possible to know the data address of | |
472 | a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and | |
473 | contains such data address. Only valid if STOPPED_BY_WATCHPOINT | |
474 | is true. */ | |
475 | CORE_ADDR stopped_data_address; | |
476 | ||
0d62e5e8 DJ |
477 | /* If this is non-zero, it is a breakpoint to be reinserted at our next |
478 | stop (SIGTRAP stops only). */ | |
479 | CORE_ADDR bp_reinsert; | |
480 | ||
d50171e4 PA |
481 | /* If this flag is set, the last continue operation at the ptrace |
482 | level on this process was a single-step. */ | |
0d62e5e8 DJ |
483 | int stepping; |
484 | ||
c2d6af84 PA |
485 | /* Range to single step within. This is a copy of the step range |
486 | passed along the last resume request. See 'struct | |
487 | thread_resume'. */ | |
488 | CORE_ADDR step_range_start; /* Inclusive */ | |
489 | CORE_ADDR step_range_end; /* Exclusive */ | |
490 | ||
a6dbe5df PA |
491 | /* If this flag is set, we need to set the event request flags the |
492 | next time we see this LWP stop. */ | |
493 | int must_set_ptrace_flags; | |
494 | ||
0d62e5e8 DJ |
495 | /* If this is non-zero, it points to a chain of signals which need to |
496 | be delivered to this process. */ | |
497 | struct pending_signals *pending_signals; | |
5544ad89 DJ |
498 | |
499 | /* A link used when resuming. It is initialized from the resume request, | |
54a0b537 | 500 | and then processed and cleared in linux_resume_one_lwp. */ |
5544ad89 | 501 | struct thread_resume *resume; |
dae5f5cf | 502 | |
229d26fc SM |
503 | /* Information bout this lwp's fast tracepoint collection status (is it |
504 | currently stopped in the jump pad, and if so, before or at/after the | |
505 | relocated instruction). Normally, we won't care about this, but we will | |
506 | if a signal arrives to this lwp while it is collecting. */ | |
507 | fast_tpoint_collect_result collecting_fast_tracepoint; | |
fa593d66 PA |
508 | |
509 | /* If this is non-zero, it points to a chain of signals which need | |
510 | to be reported to GDB. These were deferred because the thread | |
511 | was doing a fast tracepoint collect when they arrived. */ | |
512 | struct pending_signals *pending_signals_to_report; | |
513 | ||
514 | /* When collecting_fast_tracepoint is first found to be 1, we insert | |
515 | a exit-jump-pad-quickly breakpoint. This is it. */ | |
516 | struct breakpoint *exit_jump_pad_bkpt; | |
517 | ||
04f5fe89 | 518 | #ifdef USE_THREAD_DB |
d5c93e41 | 519 | int thread_known; |
24a09b5f DJ |
520 | /* The thread handle, used for e.g. TLS access. Only valid if |
521 | THREAD_KNOWN is set. */ | |
dae5f5cf | 522 | td_thrhandle_t th; |
f6327dcb KB |
523 | |
524 | /* The pthread_t handle. */ | |
525 | thread_t thread_handle; | |
dae5f5cf | 526 | #endif |
aa5ca48f DE |
527 | |
528 | /* Arch-specific additions. */ | |
529 | struct arch_lwp_info *arch_private; | |
0d62e5e8 | 530 | }; |
5544ad89 | 531 | |
214d508e | 532 | int linux_pid_exe_is_elf_64_file (int pid, unsigned int *machine); |
d0722149 | 533 | |
7ae1a6a6 PA |
534 | /* Attach to PTID. Returns 0 on success, non-zero otherwise (an |
535 | errno). */ | |
536 | int linux_attach_lwp (ptid_t ptid); | |
537 | ||
cdbfd419 | 538 | struct lwp_info *find_lwp_pid (ptid_t ptid); |
b2f7c7e8 | 539 | /* For linux_stop_lwp see nat/linux-nat.h. */ |
0d62e5e8 | 540 | |
3aee8918 PA |
541 | #ifdef HAVE_LINUX_REGSETS |
542 | void initialize_regsets_info (struct regsets_info *regsets_info); | |
543 | #endif | |
544 | ||
545 | void initialize_low_arch (void); | |
546 | ||
276d4552 YQ |
547 | void linux_set_pc_32bit (struct regcache *regcache, CORE_ADDR pc); |
548 | CORE_ADDR linux_get_pc_32bit (struct regcache *regcache); | |
549 | ||
6f69e520 YQ |
550 | void linux_set_pc_64bit (struct regcache *regcache, CORE_ADDR pc); |
551 | CORE_ADDR linux_get_pc_64bit (struct regcache *regcache); | |
552 | ||
cdbfd419 | 553 | /* From thread-db.c */ |
9b4c5f87 | 554 | int thread_db_init (void); |
8336d594 PA |
555 | void thread_db_detach (struct process_info *); |
556 | void thread_db_mourn (struct process_info *); | |
cdbfd419 | 557 | int thread_db_handle_monitor_command (char *); |
dae5f5cf DJ |
558 | int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, |
559 | CORE_ADDR load_module, CORE_ADDR *address); | |
9836d6ea | 560 | int thread_db_look_up_one_symbol (const char *name, CORE_ADDR *addrp); |
ded48a5e | 561 | |
86299109 KB |
562 | /* Called from linux-low.c when a clone event is detected. Upon entry, |
563 | both the clone and the parent should be stopped. This function does | |
564 | whatever is required have the clone under thread_db's control. */ | |
565 | ||
94c207e0 | 566 | void thread_db_notice_clone (struct thread_info *parent_thr, ptid_t child_ptid); |
86299109 | 567 | |
f6327dcb KB |
568 | bool thread_db_thread_handle (ptid_t ptid, gdb_byte **handle, int *handle_len); |
569 | ||
ded48a5e | 570 | extern int have_ptrace_getregset; |
1a5c2598 | 571 | |
0570503d PFC |
572 | /* Search for the value with type MATCH in the auxv vector with |
573 | entries of length WORDSIZE bytes. If found, store the value in | |
574 | *VALP and return 1. If not found or if there is an error, return | |
575 | 0. */ | |
576 | ||
577 | int linux_get_auxv (int wordsize, CORE_ADDR match, | |
578 | CORE_ADDR *valp); | |
579 | ||
974c89e0 AH |
580 | /* Fetch the AT_HWCAP entry from the auxv vector, where entries are length |
581 | WORDSIZE. If no entry was found, return zero. */ | |
582 | ||
583 | CORE_ADDR linux_get_hwcap (int wordsize); | |
584 | ||
585 | /* Fetch the AT_HWCAP2 entry from the auxv vector, where entries are length | |
586 | WORDSIZE. If no entry was found, return zero. */ | |
587 | ||
588 | CORE_ADDR linux_get_hwcap2 (int wordsize); | |
589 | ||
1a5c2598 | 590 | #endif /* GDBSERVER_LINUX_LOW_H */ |