1 /* Internal interfaces for the GNU/Linux specific target code for gdbserver.
2 Copyright (C) 2002-2020 Free Software Foundation, Inc.
4 This file is part of GDB.
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
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #ifndef GDBSERVER_LINUX_LOW_H
20 #define GDBSERVER_LINUX_LOW_H
22 #include "nat/linux-nat.h"
23 #include "nat/gdb_thread_db.h"
26 #include "gdbthread.h"
27 #include "gdb_proc_service.h"
29 /* Included for ptrace type definitions. */
30 #include "nat/linux-ptrace.h"
31 #include "target/waitstatus.h" /* For enum target_stop_reason. */
32 #include "tracepoint.h"
34 #define PTRACE_XFER_TYPE long
36 #ifdef HAVE_LINUX_REGSETS
37 typedef void (*regset_fill_func
) (struct regcache
*, void *);
38 typedef void (*regset_store_func
) (struct regcache
*, const void *);
43 OPTIONAL_REGS
, /* Do not error if the regset cannot be accessed. */
46 /* The arch's regsets array initializer must be terminated with a NULL
49 { 0, 0, 0, -1, (enum regset_type) -1, NULL, NULL }
53 int get_request
, set_request
;
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 *". */
58 enum regset_type type
;
59 regset_fill_func fill_function
;
60 regset_store_func store_function
;
63 /* Aggregation of all the supported regsets of a given
68 /* The regsets array. */
69 struct regset_info
*regsets
;
71 /* The number of regsets in the REGSETS array. */
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
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. */
79 char *disabled_regsets
;
84 /* Mapping between the general-purpose registers in `struct user'
85 format and GDB's register array layout. */
89 /* The number of registers accessible. */
92 /* The registers map. */
96 /* All info needed to access an architecture/mode's registers. */
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
;
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
;
111 #ifdef HAVE_LINUX_REGSETS
112 /* Info used when accessing registers with regsets. */
113 struct regsets_info
*regsets_info
;
117 struct process_info_private
119 /* Arch-specific additions. */
120 struct arch_process_info
*arch_private
;
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
;
126 /* &_r_debug. 0 if not yet determined. -1 if no PT_DYNAMIC in Phdrs. */
132 struct linux_target_ops
134 /* Return 0 if we can fetch/store the register, 1 if we cannot
135 fetch/store the register. */
136 int (*cannot_fetch_register
) (int);
137 int (*cannot_store_register
) (int);
139 /* Hook to fetch a register in some non-standard way. Used for
140 example by backends that have read-only registers with hardcoded
141 values (e.g., IA64's gr0/fr0/fr1). Returns true if register
142 REGNO was supplied, false if not, and we should fallback to the
143 standard ptrace methods. */
144 int (*fetch_register
) (struct regcache
*regcache
, int regno
);
146 CORE_ADDR (*get_pc
) (struct regcache
*regcache
);
147 void (*set_pc
) (struct regcache
*regcache
, CORE_ADDR newpc
);
149 /* See target.h for details. */
150 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
152 /* See target.h for details. */
153 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
155 /* Find the next possible PCs after the current instruction executes. */
156 std::vector
<CORE_ADDR
> (*get_next_pcs
) (struct regcache
*regcache
);
158 int decr_pc_after_break
;
159 int (*breakpoint_at
) (CORE_ADDR pc
);
161 /* Breakpoint and watchpoint related functions. See target.h for
163 int (*supports_z_point_type
) (char z_type
);
164 int (*insert_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
165 int size
, struct raw_breakpoint
*bp
);
166 int (*remove_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
167 int size
, struct raw_breakpoint
*bp
);
169 int (*stopped_by_watchpoint
) (void);
170 CORE_ADDR (*stopped_data_address
) (void);
172 /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
173 for registers smaller than an xfer unit). */
174 void (*collect_ptrace_register
) (struct regcache
*regcache
,
175 int regno
, char *buf
);
176 void (*supply_ptrace_register
) (struct regcache
*regcache
,
177 int regno
, const char *buf
);
179 /* Hook to convert from target format to ptrace format and back.
180 Returns true if any conversion was done; false otherwise.
181 If DIRECTION is 1, then copy from INF to NATIVE.
182 If DIRECTION is 0, copy from NATIVE to INF. */
183 int (*siginfo_fixup
) (siginfo_t
*native
, gdb_byte
*inf
, int direction
);
185 /* Hook to call when a new process is created or attached to.
186 If extra per-process architecture-specific data is needed,
188 struct arch_process_info
* (*new_process
) (void);
190 /* Hook to call when a process is being deleted. If extra per-process
191 architecture-specific data is needed, delete it here. */
192 void (*delete_process
) (struct arch_process_info
*info
);
194 /* Hook to call when a new thread is detected.
195 If extra per-thread architecture-specific data is needed,
197 void (*new_thread
) (struct lwp_info
*);
199 /* Hook to call when a thread is being deleted. If extra per-thread
200 architecture-specific data is needed, delete it here. */
201 void (*delete_thread
) (struct arch_lwp_info
*);
203 /* Hook to call, if any, when a new fork is attached. */
204 void (*new_fork
) (struct process_info
*parent
, struct process_info
*child
);
206 /* Hook to call prior to resuming a thread. */
207 void (*prepare_to_resume
) (struct lwp_info
*);
209 /* Hook to support target specific qSupported. */
210 void (*process_qsupported
) (char **, int count
);
212 /* Returns true if the low target supports tracepoints. */
213 int (*supports_tracepoints
) (void);
215 /* Fill ADDRP with the thread area address of LWPID. Returns 0 on
216 success, -1 on failure. */
217 int (*get_thread_area
) (int lwpid
, CORE_ADDR
*addrp
);
219 /* Install a fast tracepoint jump pad. See target.h for
221 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
225 CORE_ADDR
*jump_entry
,
226 CORE_ADDR
*trampoline
,
227 ULONGEST
*trampoline_size
,
228 unsigned char *jjump_pad_insn
,
229 ULONGEST
*jjump_pad_insn_size
,
230 CORE_ADDR
*adjusted_insn_addr
,
231 CORE_ADDR
*adjusted_insn_addr_end
,
234 /* Return the bytecode operations vector for the current inferior.
235 Returns NULL if bytecode compilation is not supported. */
236 struct emit_ops
*(*emit_ops
) (void);
238 /* Return the minimum length of an instruction that can be safely overwritten
239 for use as a fast tracepoint. */
240 int (*get_min_fast_tracepoint_insn_len
) (void);
242 /* Returns true if the low target supports range stepping. */
243 int (*supports_range_stepping
) (void);
246 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
249 int (*supports_hardware_single_step
) (void);
251 /* Fill *SYSNO with the syscall nr trapped. Only to be called when
252 inferior is stopped due to SYSCALL_SIGTRAP. */
253 void (*get_syscall_trapinfo
) (struct regcache
*regcache
, int *sysno
);
256 int (*get_ipa_tdesc_idx
) (void);
259 extern struct linux_target_ops the_low_target
;
261 /* Target ops definitions for a Linux target. */
263 class linux_process_target
: public process_stratum_target
267 int create_inferior (const char *program
,
268 const std::vector
<char *> &program_args
) override
;
270 void post_create_inferior () override
;
272 int attach (unsigned long pid
) override
;
274 int kill (process_info
*proc
) override
;
276 int detach (process_info
*proc
) override
;
278 void mourn (process_info
*proc
) override
;
280 void join (int pid
) override
;
282 bool thread_alive (ptid_t pid
) override
;
284 void resume (thread_resume
*resume_info
, size_t n
) override
;
286 ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
287 int options
) override
;
289 void fetch_registers (regcache
*regcache
, int regno
) override
;
291 void store_registers (regcache
*regcache
, int regno
) override
;
293 int prepare_to_access_memory () override
;
295 void done_accessing_memory () override
;
297 int read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
300 int write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
303 void look_up_symbols () override
;
305 void request_interrupt () override
;
307 bool supports_read_auxv () override
;
309 int read_auxv (CORE_ADDR offset
, unsigned char *myaddr
,
310 unsigned int len
) override
;
312 bool supports_z_point_type (char z_type
) override
;
314 int insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
315 int size
, raw_breakpoint
*bp
) override
;
317 int remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
318 int size
, raw_breakpoint
*bp
) override
;
320 bool stopped_by_sw_breakpoint () override
;
322 bool supports_stopped_by_sw_breakpoint () override
;
324 bool stopped_by_hw_breakpoint () override
;
326 bool supports_stopped_by_hw_breakpoint () override
;
328 bool supports_hardware_single_step () override
;
330 bool stopped_by_watchpoint () override
;
332 CORE_ADDR
stopped_data_address () override
;
334 bool supports_read_offsets () override
;
336 int read_offsets (CORE_ADDR
*text
, CORE_ADDR
*data
) override
;
338 bool supports_get_tls_address () override
;
340 int get_tls_address (thread_info
*thread
, CORE_ADDR offset
,
341 CORE_ADDR load_module
, CORE_ADDR
*address
) override
;
343 bool supports_qxfer_osdata () override
;
345 int qxfer_osdata (const char *annex
, unsigned char *readbuf
,
346 unsigned const char *writebuf
,
347 CORE_ADDR offset
, int len
) override
;
349 bool supports_qxfer_siginfo () override
;
351 int qxfer_siginfo (const char *annex
, unsigned char *readbuf
,
352 unsigned const char *writebuf
,
353 CORE_ADDR offset
, int len
) override
;
355 bool supports_non_stop () override
;
357 bool async (bool enable
) override
;
359 int start_non_stop (bool enable
) override
;
361 bool supports_multi_process () override
;
363 bool supports_fork_events () override
;
365 bool supports_vfork_events () override
;
367 bool supports_exec_events () override
;
369 void handle_new_gdb_connection () override
;
371 int handle_monitor_command (char *mon
) override
;
373 int core_of_thread (ptid_t ptid
) override
;
375 #if defined PT_GETDSBT || defined PTRACE_GETFDPIC
376 bool supports_read_loadmap () override
;
378 int read_loadmap (const char *annex
, CORE_ADDR offset
,
379 unsigned char *myaddr
, unsigned int len
) override
;
382 void process_qsupported (char **features
, int count
) override
;
384 bool supports_tracepoints () override
;
386 CORE_ADDR
read_pc (regcache
*regcache
) override
;
388 void write_pc (regcache
*regcache
, CORE_ADDR pc
) override
;
390 bool supports_thread_stopped () override
;
392 bool thread_stopped (thread_info
*thread
) override
;
394 void pause_all (bool freeze
) override
;
396 void unpause_all (bool unfreeze
) override
;
398 void stabilize_threads () override
;
400 bool supports_fast_tracepoints () override
;
402 int install_fast_tracepoint_jump_pad (CORE_ADDR tpoint
,
407 CORE_ADDR
*jump_entry
,
408 CORE_ADDR
*trampoline
,
409 ULONGEST
*trampoline_size
,
410 unsigned char *jjump_pad_insn
,
411 ULONGEST
*jjump_pad_insn_size
,
412 CORE_ADDR
*adjusted_insn_addr
,
413 CORE_ADDR
*adjusted_insn_addr_end
,
416 int get_min_fast_tracepoint_insn_len () override
;
418 struct emit_ops
*emit_ops () override
;
420 bool supports_disable_randomization () override
;
422 bool supports_qxfer_libraries_svr4 () override
;
424 int qxfer_libraries_svr4 (const char *annex
,
425 unsigned char *readbuf
,
426 unsigned const char *writebuf
,
427 CORE_ADDR offset
, int len
) override
;
429 bool supports_agent () override
;
431 #ifdef HAVE_LINUX_BTRACE
432 btrace_target_info
*enable_btrace (ptid_t ptid
,
433 const btrace_config
*conf
) override
;
435 int disable_btrace (btrace_target_info
*tinfo
) override
;
437 int read_btrace (btrace_target_info
*tinfo
, buffer
*buf
,
438 enum btrace_read_type type
) override
;
440 int read_btrace_conf (const btrace_target_info
*tinfo
,
441 buffer
*buf
) override
;
444 bool supports_range_stepping () override
;
446 bool supports_pid_to_exec_file () override
;
448 char *pid_to_exec_file (int pid
) override
;
450 bool supports_multifs () override
;
452 int multifs_open (int pid
, const char *filename
, int flags
,
453 mode_t mode
) override
;
455 int multifs_unlink (int pid
, const char *filename
) override
;
457 ssize_t
multifs_readlink (int pid
, const char *filename
, char *buf
,
458 size_t bufsiz
) override
;
460 int breakpoint_kind_from_pc (CORE_ADDR
*pcptr
) override
;
462 const gdb_byte
*sw_breakpoint_from_kind (int kind
, int *size
) override
;
464 int breakpoint_kind_from_current_state (CORE_ADDR
*pcptr
) override
;
466 const char *thread_name (ptid_t thread
) override
;
469 bool thread_handle (ptid_t ptid
, gdb_byte
**handle
,
470 int *handle_len
) override
;
473 bool supports_software_single_step () override
;
475 bool supports_catch_syscall () override
;
477 int get_ipa_tdesc_idx () override
;
479 /* Return the information to access registers. This has public
480 visibility because proc-service uses it. */
481 virtual const regs_info
*get_regs_info () = 0;
485 /* Handle a GNU/Linux extended wait response. If we see a clone,
486 fork, or vfork event, we need to add the new LWP to our list
487 (and return 0 so as not to report the trap to higher layers).
488 If we see an exec event, we will modify ORIG_EVENT_LWP to point
489 to a new LWP representing the new program. */
490 int handle_extended_wait (lwp_info
**orig_event_lwp
, int wstat
);
492 /* Do low-level handling of the event, and check if we should go on
493 and pass it to caller code. Return the affected lwp if we are, or
495 lwp_info
*filter_event (int lwpid
, int wstat
);
497 /* Wait for an event from child(ren) WAIT_PTID, and return any that
498 match FILTER_PTID (leaving others pending). The PTIDs can be:
499 minus_one_ptid, to specify any child; a pid PTID, specifying all
500 lwps of a thread group; or a PTID representing a single lwp. Store
501 the stop status through the status pointer WSTAT. OPTIONS is
502 passed to the waitpid call. Return 0 if no event was found and
503 OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
504 was found. Return the PID of the stopped child otherwise. */
505 int wait_for_event_filtered (ptid_t wait_ptid
, ptid_t filter_ptid
,
506 int *wstatp
, int options
);
508 /* Wait for an event from child(ren) PTID. PTIDs can be:
509 minus_one_ptid, to specify any child; a pid PTID, specifying all
510 lwps of a thread group; or a PTID representing a single lwp. Store
511 the stop status through the status pointer WSTAT. OPTIONS is
512 passed to the waitpid call. Return 0 if no event was found and
513 OPTIONS contains WNOHANG. Return -1 if no unwaited-for children
514 was found. Return the PID of the stopped child otherwise. */
515 int wait_for_event (ptid_t ptid
, int *wstatp
, int options
);
517 /* Wait for all children to stop for the SIGSTOPs we just queued. */
518 void wait_for_sigstop ();
520 /* Wait for process, returns status. */
521 ptid_t
wait_1 (ptid_t ptid
, target_waitstatus
*ourstatus
,
524 /* Stop all lwps that aren't stopped yet, except EXCEPT, if not NULL.
525 If SUSPEND, then also increase the suspend count of every LWP,
527 void stop_all_lwps (int suspend
, lwp_info
*except
);
529 /* Stopped LWPs that the client wanted to be running, that don't have
530 pending statuses, are set to run again, except for EXCEPT, if not
531 NULL. This undoes a stop_all_lwps call. */
532 void unstop_all_lwps (int unsuspend
, lwp_info
*except
);
534 /* Start a step-over operation on LWP. When LWP stopped at a
535 breakpoint, to make progress, we need to remove the breakpoint out
536 of the way. If we let other threads run while we do that, they may
537 pass by the breakpoint location and miss hitting it. To avoid
538 that, a step-over momentarily stops all threads while LWP is
539 single-stepped by either hardware or software while the breakpoint
540 is temporarily uninserted from the inferior. When the single-step
541 finishes, we reinsert the breakpoint, and let all threads that are
542 supposed to be running, run again. */
543 void start_step_over (lwp_info
*lwp
);
545 /* If there's a step over in progress, wait until all threads stop
546 (that is, until the stepping thread finishes its step), and
547 unsuspend all lwps. The stepping thread ends with its status
548 pending, which is processed later when we get back to processing
550 void complete_ongoing_step_over ();
552 /* When we finish a step-over, set threads running again. If there's
553 another thread that may need a step-over, now's the time to start
554 it. Eventually, we'll move all threads past their breakpoints. */
555 void proceed_all_lwps ();
557 /* The reason we resume in the caller, is because we want to be able
558 to pass lwp->status_pending as WSTAT, and we need to clear
559 status_pending_p before resuming, otherwise, resume_one_lwp
560 refuses to resume. */
561 bool maybe_move_out_of_jump_pad (lwp_info
*lwp
, int *wstat
);
563 /* Move THREAD out of the jump pad. */
564 void move_out_of_jump_pad (thread_info
*thread
);
566 /* Call low_arch_setup on THREAD. */
567 void arch_setup_thread (thread_info
*thread
);
570 /* The architecture-specific "low" methods are listed below. */
572 /* Architecture-specific setup for the current thread. */
573 virtual void low_arch_setup () = 0;
576 extern linux_process_target
*the_linux_target
;
578 #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))
579 #define get_lwp_thread(lwp) ((lwp)->thread)
581 /* This struct is recorded in the target_data field of struct thread_info.
583 On linux ``all_threads'' is keyed by the LWP ID, which we use as the
584 GDB protocol representation of the thread ID. Threads also have
585 a "process ID" (poorly named) which is (presently) the same as the
588 There is also ``all_processes'' is keyed by the "overall process ID",
589 which GNU/Linux calls tgid, "thread group ID". */
593 /* Backlink to the parent object. */
594 struct thread_info
*thread
;
596 /* If this flag is set, the next SIGSTOP will be ignored (the
597 process will be immediately resumed). This means that either we
598 sent the SIGSTOP to it ourselves and got some other pending event
599 (so the SIGSTOP is still pending), or that we stopped the
600 inferior implicitly via PTRACE_ATTACH and have not waited for it
604 /* When this is true, we shall not try to resume this thread, even
605 if last_resume_kind isn't resume_stop. */
608 /* If this flag is set, the lwp is known to be stopped right now (stop
609 event already received in a wait()). */
612 /* Signal whether we are in a SYSCALL_ENTRY or
613 in a SYSCALL_RETURN event.
615 - TARGET_WAITKIND_SYSCALL_ENTRY
616 - TARGET_WAITKIND_SYSCALL_RETURN */
617 enum target_waitkind syscall_state
;
619 /* When stopped is set, the last wait status recorded for this lwp. */
622 /* If WAITSTATUS->KIND != TARGET_WAITKIND_IGNORE, the waitstatus for
623 this LWP's last event, to pass to GDB without any further
624 processing. This is used to store extended ptrace event
625 information or exit status until it can be reported to GDB. */
626 struct target_waitstatus waitstatus
;
628 /* A pointer to the fork child/parent relative. Valid only while
629 the parent fork event is not reported to higher layers. Used to
630 avoid wildcard vCont actions resuming a fork child before GDB is
631 notified about the parent's fork event. */
632 struct lwp_info
*fork_relative
;
634 /* When stopped is set, this is where the lwp last stopped, with
635 decr_pc_after_break already accounted for. If the LWP is
636 running, this is the address at which the lwp was resumed. */
639 /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
641 int status_pending_p
;
644 /* The reason the LWP last stopped, if we need to track it
645 (breakpoint, watchpoint, etc.) */
646 enum target_stop_reason stop_reason
;
648 /* On architectures where it is possible to know the data address of
649 a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and
650 contains such data address. Only valid if STOPPED_BY_WATCHPOINT
652 CORE_ADDR stopped_data_address
;
654 /* If this is non-zero, it is a breakpoint to be reinserted at our next
655 stop (SIGTRAP stops only). */
656 CORE_ADDR bp_reinsert
;
658 /* If this flag is set, the last continue operation at the ptrace
659 level on this process was a single-step. */
662 /* Range to single step within. This is a copy of the step range
663 passed along the last resume request. See 'struct
665 CORE_ADDR step_range_start
; /* Inclusive */
666 CORE_ADDR step_range_end
; /* Exclusive */
668 /* If this flag is set, we need to set the event request flags the
669 next time we see this LWP stop. */
670 int must_set_ptrace_flags
;
672 /* If this is non-zero, it points to a chain of signals which need to
673 be delivered to this process. */
674 struct pending_signals
*pending_signals
;
676 /* A link used when resuming. It is initialized from the resume request,
677 and then processed and cleared in linux_resume_one_lwp. */
678 struct thread_resume
*resume
;
680 /* Information bout this lwp's fast tracepoint collection status (is it
681 currently stopped in the jump pad, and if so, before or at/after the
682 relocated instruction). Normally, we won't care about this, but we will
683 if a signal arrives to this lwp while it is collecting. */
684 fast_tpoint_collect_result collecting_fast_tracepoint
;
686 /* If this is non-zero, it points to a chain of signals which need
687 to be reported to GDB. These were deferred because the thread
688 was doing a fast tracepoint collect when they arrived. */
689 struct pending_signals
*pending_signals_to_report
;
691 /* When collecting_fast_tracepoint is first found to be 1, we insert
692 a exit-jump-pad-quickly breakpoint. This is it. */
693 struct breakpoint
*exit_jump_pad_bkpt
;
697 /* The thread handle, used for e.g. TLS access. Only valid if
698 THREAD_KNOWN is set. */
701 /* The pthread_t handle. */
702 thread_t thread_handle
;
705 /* Arch-specific additions. */
706 struct arch_lwp_info
*arch_private
;
709 int linux_pid_exe_is_elf_64_file (int pid
, unsigned int *machine
);
711 /* Attach to PTID. Returns 0 on success, non-zero otherwise (an
713 int linux_attach_lwp (ptid_t ptid
);
715 struct lwp_info
*find_lwp_pid (ptid_t ptid
);
716 /* For linux_stop_lwp see nat/linux-nat.h. */
718 #ifdef HAVE_LINUX_REGSETS
719 void initialize_regsets_info (struct regsets_info
*regsets_info
);
722 void initialize_low_arch (void);
724 void linux_set_pc_32bit (struct regcache
*regcache
, CORE_ADDR pc
);
725 CORE_ADDR
linux_get_pc_32bit (struct regcache
*regcache
);
727 void linux_set_pc_64bit (struct regcache
*regcache
, CORE_ADDR pc
);
728 CORE_ADDR
linux_get_pc_64bit (struct regcache
*regcache
);
730 /* From thread-db.c */
731 int thread_db_init (void);
732 void thread_db_detach (struct process_info
*);
733 void thread_db_mourn (struct process_info
*);
734 int thread_db_handle_monitor_command (char *);
735 int thread_db_get_tls_address (struct thread_info
*thread
, CORE_ADDR offset
,
736 CORE_ADDR load_module
, CORE_ADDR
*address
);
737 int thread_db_look_up_one_symbol (const char *name
, CORE_ADDR
*addrp
);
739 /* Called from linux-low.c when a clone event is detected. Upon entry,
740 both the clone and the parent should be stopped. This function does
741 whatever is required have the clone under thread_db's control. */
743 void thread_db_notice_clone (struct thread_info
*parent_thr
, ptid_t child_ptid
);
745 bool thread_db_thread_handle (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
747 extern int have_ptrace_getregset
;
749 /* Search for the value with type MATCH in the auxv vector with
750 entries of length WORDSIZE bytes. If found, store the value in
751 *VALP and return 1. If not found or if there is an error, return
754 int linux_get_auxv (int wordsize
, CORE_ADDR match
,
757 /* Fetch the AT_HWCAP entry from the auxv vector, where entries are length
758 WORDSIZE. If no entry was found, return zero. */
760 CORE_ADDR
linux_get_hwcap (int wordsize
);
762 /* Fetch the AT_HWCAP2 entry from the auxv vector, where entries are length
763 WORDSIZE. If no entry was found, return zero. */
765 CORE_ADDR
linux_get_hwcap2 (int wordsize
);
767 #endif /* GDBSERVER_LINUX_LOW_H */