1 /* Target operations for the remote server for GDB.
2 Copyright (C) 2002-2020 Free Software Foundation, Inc.
4 Contributed by MontaVista Software.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #ifndef GDBSERVER_TARGET_H
22 #define GDBSERVER_TARGET_H
24 #include <sys/types.h> /* for mode_t */
25 #include "target/target.h"
26 #include "target/resume.h"
27 #include "target/wait.h"
28 #include "target/waitstatus.h"
29 #include "mem-break.h"
30 #include "gdbsupport/btrace-common.h"
37 /* This structure describes how to resume a particular thread (or all
38 threads) based on the client's request. If thread is -1, then this
39 entry applies to all threads. These are passed around as an
46 /* How to "resume". */
47 enum resume_kind kind
;
49 /* If non-zero, send this signal when we resume, or to stop the
50 thread. If stopping a thread, and this is 0, the target should
51 stop the thread however it best decides to (e.g., SIGSTOP on
52 linux; SuspendThread on win32). This is a host signal value (not
56 /* Range to single step within. Valid only iff KIND is resume_step.
58 Single-step once, and then continuing stepping as long as the
59 thread stops in this range. (If the range is empty
60 [STEP_RANGE_START == STEP_RANGE_END], then this is a single-step
62 CORE_ADDR step_range_start
; /* Inclusive */
63 CORE_ADDR step_range_end
; /* Exclusive */
68 /* GDBserver doesn't have a concept of strata like GDB, but we call
69 its target vector "process_stratum" anyway for the benefit of
71 struct process_stratum_target
73 /* Read/Write OS data using qXfer packets. */
74 int (*qxfer_osdata
) (const char *annex
, unsigned char *readbuf
,
75 unsigned const char *writebuf
, CORE_ADDR offset
,
78 /* Read/Write extra signal info. */
79 int (*qxfer_siginfo
) (const char *annex
, unsigned char *readbuf
,
80 unsigned const char *writebuf
,
81 CORE_ADDR offset
, int len
);
83 int (*supports_non_stop
) (void);
85 /* Enables async target events. Returns the previous enable
87 int (*async
) (int enable
);
89 /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
90 success, -1 otherwise. */
91 int (*start_non_stop
) (int);
93 /* Returns true if the target supports multi-process debugging. */
94 int (*supports_multi_process
) (void);
96 /* Returns true if fork events are supported. */
97 int (*supports_fork_events
) (void);
99 /* Returns true if vfork events are supported. */
100 int (*supports_vfork_events
) (void);
102 /* Returns true if exec events are supported. */
103 int (*supports_exec_events
) (void);
105 /* Allows target to re-initialize connection-specific settings. */
106 void (*handle_new_gdb_connection
) (void);
108 /* If not NULL, target-specific routine to process monitor command.
109 Returns 1 if handled, or 0 to perform default processing. */
110 int (*handle_monitor_command
) (char *);
112 /* Returns the core given a thread, or -1 if not known. */
113 int (*core_of_thread
) (ptid_t
);
115 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
116 int (*read_loadmap
) (const char *annex
, CORE_ADDR offset
,
117 unsigned char *myaddr
, unsigned int len
);
119 /* Target specific qSupported support. FEATURES is an array of
120 features with COUNT elements. */
121 void (*process_qsupported
) (char **features
, int count
);
123 /* Return 1 if the target supports tracepoints, 0 (or leave the
124 callback NULL) otherwise. */
125 int (*supports_tracepoints
) (void);
127 /* Read PC from REGCACHE. */
128 CORE_ADDR (*read_pc
) (struct regcache
*regcache
);
130 /* Write PC to REGCACHE. */
131 void (*write_pc
) (struct regcache
*regcache
, CORE_ADDR pc
);
133 /* Return true if THREAD is known to be stopped now. */
134 int (*thread_stopped
) (struct thread_info
*thread
);
136 /* Read Thread Information Block address. */
137 int (*get_tib_address
) (ptid_t ptid
, CORE_ADDR
*address
);
139 /* Pause all threads. If FREEZE, arrange for any resume attempt to
140 be ignored until an unpause_all call unfreezes threads again.
141 There can be nested calls to pause_all, so a freeze counter
142 should be maintained. */
143 void (*pause_all
) (int freeze
);
145 /* Unpause all threads. Threads that hadn't been resumed by the
146 client should be left stopped. Basically a pause/unpause call
147 pair should not end up resuming threads that were stopped before
149 void (*unpause_all
) (int unfreeze
);
151 /* Stabilize all threads. That is, force them out of jump pads. */
152 void (*stabilize_threads
) (void);
154 /* Install a fast tracepoint jump pad. TPOINT is the address of the
155 tracepoint internal object as used by the IPA agent. TPADDR is
156 the address of tracepoint. COLLECTOR is address of the function
157 the jump pad redirects to. LOCKADDR is the address of the jump
158 pad lock object. ORIG_SIZE is the size in bytes of the
159 instruction at TPADDR. JUMP_ENTRY points to the address of the
160 jump pad entry, and on return holds the address past the end of
161 the created jump pad. If a trampoline is created by the function,
162 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
163 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
164 buffer containing a copy of the instruction at TPADDR.
165 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
166 return the address range where the instruction at TPADDR was relocated
167 to. If an error occurs, the ERR may be used to pass on an error
169 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
173 CORE_ADDR
*jump_entry
,
174 CORE_ADDR
*trampoline
,
175 ULONGEST
*trampoline_size
,
176 unsigned char *jjump_pad_insn
,
177 ULONGEST
*jjump_pad_insn_size
,
178 CORE_ADDR
*adjusted_insn_addr
,
179 CORE_ADDR
*adjusted_insn_addr_end
,
182 /* Return the bytecode operations vector for the current inferior.
183 Returns NULL if bytecode compilation is not supported. */
184 struct emit_ops
*(*emit_ops
) (void);
186 /* Returns true if the target supports disabling randomization. */
187 int (*supports_disable_randomization
) (void);
189 /* Return the minimum length of an instruction that can be safely overwritten
190 for use as a fast tracepoint. */
191 int (*get_min_fast_tracepoint_insn_len
) (void);
193 /* Read solib info on SVR4 platforms. */
194 int (*qxfer_libraries_svr4
) (const char *annex
, unsigned char *readbuf
,
195 unsigned const char *writebuf
,
196 CORE_ADDR offset
, int len
);
198 /* Return true if target supports debugging agent. */
199 int (*supports_agent
) (void);
201 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
202 target information struct for reading and for disabling branch trace. */
203 struct btrace_target_info
*(*enable_btrace
)
204 (ptid_t ptid
, const struct btrace_config
*conf
);
206 /* Disable branch tracing.
207 Returns zero on success, non-zero otherwise. */
208 int (*disable_btrace
) (struct btrace_target_info
*tinfo
);
210 /* Read branch trace data into buffer.
211 Return 0 on success; print an error message into BUFFER and return -1,
213 int (*read_btrace
) (struct btrace_target_info
*, struct buffer
*,
214 enum btrace_read_type type
);
216 /* Read the branch trace configuration into BUFFER.
217 Return 0 on success; print an error message into BUFFER and return -1
219 int (*read_btrace_conf
) (const struct btrace_target_info
*, struct buffer
*);
221 /* Return true if target supports range stepping. */
222 int (*supports_range_stepping
) (void);
224 /* Return the full absolute name of the executable file that was
225 run to create the process PID. If the executable file cannot
226 be determined, NULL is returned. Otherwise, a pointer to a
227 character string containing the pathname is returned. This
228 string should be copied into a buffer by the client if the string
229 will not be immediately used, or if it must persist. */
230 char *(*pid_to_exec_file
) (int pid
);
232 /* Multiple-filesystem-aware open. Like open(2), but operating in
233 the filesystem as it appears to process PID. Systems where all
234 processes share a common filesystem should set this to NULL.
235 If NULL, the caller should fall back to open(2). */
236 int (*multifs_open
) (int pid
, const char *filename
,
237 int flags
, mode_t mode
);
239 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
240 in the filesystem as it appears to process PID. Systems where
241 all processes share a common filesystem should set this to NULL.
242 If NULL, the caller should fall back to unlink(2). */
243 int (*multifs_unlink
) (int pid
, const char *filename
);
245 /* Multiple-filesystem-aware readlink. Like readlink(2), but
246 operating in the filesystem as it appears to process PID.
247 Systems where all processes share a common filesystem should
248 set this to NULL. If NULL, the caller should fall back to
250 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
251 char *buf
, size_t bufsiz
);
253 /* Return the breakpoint kind for this target based on PC. The PCPTR is
254 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
255 ARM) was present in the PC. */
256 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
258 /* Return the software breakpoint from KIND. KIND can have target
259 specific meaning like the Z0 kind parameter.
260 SIZE is set to the software breakpoint's length in memory. */
261 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
263 /* Return the thread's name, or NULL if the target is unable to determine it.
264 The returned value must not be freed by the caller. */
265 const char *(*thread_name
) (ptid_t thread
);
267 /* Return the breakpoint kind for this target based on the current
268 processor state (e.g. the current instruction mode on ARM) and the
269 PC. The PCPTR is adjusted to the real memory location in case a flag
270 (e.g., the Thumb bit on ARM) is present in the PC. */
271 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
273 /* Returns true if the target can software single step. */
274 int (*supports_software_single_step
) (void);
276 /* Return 1 if the target supports catch syscall, 0 (or leave the
277 callback NULL) otherwise. */
278 int (*supports_catch_syscall
) (void);
280 /* Return tdesc index for IPA. */
281 int (*get_ipa_tdesc_idx
) (void);
283 /* Thread ID to (numeric) thread handle: Return true on success and
284 false for failure. Return pointer to thread handle via HANDLE
285 and the handle's length via HANDLE_LEN. */
286 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
288 /* The object that will gradually replace this struct. */
296 virtual ~process_target () = default;
298 /* Start a new process.
300 PROGRAM is a path to the program to execute.
301 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
302 to be passed to the inferior as ``argv'' (along with PROGRAM).
304 Returns the new PID on success, -1 on failure. Registers the new
305 process with the process list. */
306 virtual int create_inferior (const char *program
,
307 const std::vector
<char *> &program_args
) = 0;
309 /* Do additional setup after a new process is created, including
310 exec-wrapper completion. */
311 virtual void post_create_inferior ();
313 /* Attach to a running process.
315 PID is the process ID to attach to, specified by the user
318 Returns -1 if attaching is unsupported, 0 on success, and calls
319 error() otherwise. */
320 virtual int attach (unsigned long pid
) = 0;
322 /* Kill process PROC. Return -1 on failure, and 0 on success. */
323 virtual int kill (process_info
*proc
) = 0;
325 /* Detach from process PROC. Return -1 on failure, and 0 on
327 virtual int detach (process_info
*proc
) = 0;
329 /* The inferior process has died. Do what is right. */
330 virtual void mourn (process_info
*proc
) = 0;
332 /* Wait for process PID to exit. */
333 virtual void join (int pid
) = 0;
335 /* Return true iff the thread with process ID PID is alive. */
336 virtual bool thread_alive (ptid_t pid
) = 0;
338 /* Resume the inferior process. */
339 virtual void resume (thread_resume
*resume_info
, size_t n
) = 0;
341 /* Wait for the inferior process or thread to change state. Store
342 status through argument pointer STATUS.
344 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
345 wait for any thread of process pid to do something. Return ptid
346 of child, or -1 in case of error; store status through argument
347 pointer STATUS. OPTIONS is a bit set of options defined as
348 TARGET_W* above. If options contains TARGET_WNOHANG and there's
349 no child stop to report, return is
350 null_ptid/TARGET_WAITKIND_IGNORE. */
351 virtual ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
354 /* Fetch registers from the inferior process.
356 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
357 virtual void fetch_registers (regcache
*regcache
, int regno
) = 0;
359 /* Store registers to the inferior process.
361 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
362 virtual void store_registers (regcache
*regcache
, int regno
) = 0;
364 /* Prepare to read or write memory from the inferior process.
365 Targets use this to do what is necessary to get the state of the
366 inferior such that it is possible to access memory.
368 This should generally only be called from client facing routines,
369 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
372 Like `read_memory' and `write_memory' below, returns 0 on success
373 and errno on failure. */
374 virtual int prepare_to_access_memory ();
376 /* Undo the effects of prepare_to_access_memory. */
377 virtual void done_accessing_memory ();
379 /* Read memory from the inferior process. This should generally be
380 called through read_inferior_memory, which handles breakpoint shadowing.
382 Read LEN bytes at MEMADDR into a buffer at MYADDR.
384 Returns 0 on success and errno on failure. */
385 virtual int read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
388 /* Write memory to the inferior process. This should generally be
389 called through target_write_memory, which handles breakpoint shadowing.
391 Write LEN bytes from the buffer at MYADDR to MEMADDR.
393 Returns 0 on success and errno on failure. */
394 virtual int write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
397 /* Query GDB for the values of any symbols we're interested in.
398 This function is called whenever we receive a "qSymbols::"
399 query, which corresponds to every time more symbols (might)
401 virtual void look_up_symbols ();
403 /* Send an interrupt request to the inferior process,
404 however is appropriate. */
405 virtual void request_interrupt () = 0;
407 /* Return true if the read_auxv target op is supported. */
408 virtual bool supports_read_auxv ();
410 /* Read auxiliary vector data from the inferior process.
412 Read LEN bytes at OFFSET into a buffer at MYADDR. */
413 virtual int read_auxv (CORE_ADDR offset
, unsigned char *myaddr
,
416 /* Returns true if GDB Z breakpoint type TYPE is supported, false
417 otherwise. The type is coded as follows:
418 '0' - software-breakpoint
419 '1' - hardware-breakpoint
420 '2' - write watchpoint
421 '3' - read watchpoint
422 '4' - access watchpoint
424 virtual bool supports_z_point_type (char z_type
);
426 /* Insert and remove a break or watchpoint.
427 Returns 0 on success, -1 on failure and 1 on unsupported. */
428 virtual int insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
429 int size
, raw_breakpoint
*bp
);
431 virtual int remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
432 int size
, raw_breakpoint
*bp
);
434 /* Returns true if the target stopped because it executed a software
435 breakpoint instruction, false otherwise. */
436 virtual bool stopped_by_sw_breakpoint ();
438 /* Returns true if the target knows whether a trap was caused by a
439 SW breakpoint triggering. */
440 virtual bool supports_stopped_by_sw_breakpoint ();
442 /* Returns true if the target stopped for a hardware breakpoint. */
443 virtual bool stopped_by_hw_breakpoint ();
445 /* Returns true if the target knows whether a trap was caused by a
446 HW breakpoint triggering. */
447 virtual bool supports_stopped_by_hw_breakpoint ();
449 /* Returns true if the target can do hardware single step. */
450 virtual bool supports_hardware_single_step ();
452 /* Returns true if target was stopped due to a watchpoint hit, false
454 virtual bool stopped_by_watchpoint ();
456 /* Returns the address associated with the watchpoint that hit, if any;
457 returns 0 otherwise. */
458 virtual CORE_ADDR
stopped_data_address ();
460 /* Return true if the read_offsets target op is supported. */
461 virtual bool supports_read_offsets ();
463 /* Reports the text, data offsets of the executable. This is
464 needed for uclinux where the executable is relocated during load
466 virtual int read_offsets (CORE_ADDR
*text
, CORE_ADDR
*data
);
468 /* Return true if the get_tls_address target op is supported. */
469 virtual bool supports_get_tls_address ();
471 /* Fetch the address associated with a specific thread local storage
472 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
473 Stores it in *ADDRESS and returns zero on success; otherwise returns
474 an error code. A return value of -1 means this system does not
475 support the operation. */
476 virtual int get_tls_address (thread_info
*thread
, CORE_ADDR offset
,
477 CORE_ADDR load_module
, CORE_ADDR
*address
);
479 /* Fill BUF with an hostio error packet representing the last hostio
481 virtual void hostio_last_error (char *buf
);
484 extern process_stratum_target
*the_target
;
486 void set_target_ops (process_stratum_target
*);
488 #define target_create_inferior(program, program_args) \
489 the_target->pt->create_inferior (program, program_args)
491 #define target_post_create_inferior() \
492 the_target->pt->post_create_inferior ()
494 #define myattach(pid) \
495 the_target->pt->attach (pid)
497 int kill_inferior (process_info
*proc
);
499 #define target_supports_fork_events() \
500 (the_target->supports_fork_events ? \
501 (*the_target->supports_fork_events) () : 0)
503 #define target_supports_vfork_events() \
504 (the_target->supports_vfork_events ? \
505 (*the_target->supports_vfork_events) () : 0)
507 #define target_supports_exec_events() \
508 (the_target->supports_exec_events ? \
509 (*the_target->supports_exec_events) () : 0)
511 #define target_handle_new_gdb_connection() \
514 if (the_target->handle_new_gdb_connection != NULL) \
515 (*the_target->handle_new_gdb_connection) (); \
518 #define detach_inferior(proc) \
519 the_target->pt->detach (proc)
521 #define mythread_alive(pid) \
522 the_target->pt->thread_alive (pid)
524 #define fetch_inferior_registers(regcache, regno) \
525 the_target->pt->fetch_registers (regcache, regno)
527 #define store_inferior_registers(regcache, regno) \
528 the_target->pt->store_registers (regcache, regno)
530 #define join_inferior(pid) \
531 the_target->pt->join (pid)
533 #define target_supports_non_stop() \
534 (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
536 #define target_async(enable) \
537 (the_target->async ? (*the_target->async) (enable) : 0)
539 #define target_process_qsupported(features, count) \
542 if (the_target->process_qsupported) \
543 the_target->process_qsupported (features, count); \
546 #define target_supports_catch_syscall() \
547 (the_target->supports_catch_syscall ? \
548 (*the_target->supports_catch_syscall) () : 0)
550 #define target_get_ipa_tdesc_idx() \
551 (the_target->get_ipa_tdesc_idx \
552 ? (*the_target->get_ipa_tdesc_idx) () : 0)
554 #define target_supports_tracepoints() \
555 (the_target->supports_tracepoints \
556 ? (*the_target->supports_tracepoints) () : 0)
558 #define target_supports_fast_tracepoints() \
559 (the_target->install_fast_tracepoint_jump_pad != NULL)
561 #define target_get_min_fast_tracepoint_insn_len() \
562 (the_target->get_min_fast_tracepoint_insn_len \
563 ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
565 #define thread_stopped(thread) \
566 (*the_target->thread_stopped) (thread)
568 #define pause_all(freeze) \
571 if (the_target->pause_all) \
572 (*the_target->pause_all) (freeze); \
575 #define unpause_all(unfreeze) \
578 if (the_target->unpause_all) \
579 (*the_target->unpause_all) (unfreeze); \
582 #define stabilize_threads() \
585 if (the_target->stabilize_threads) \
586 (*the_target->stabilize_threads) (); \
589 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
590 collector, lockaddr, \
593 trampoline, trampoline_size, \
595 jjump_pad_insn_size, \
596 adjusted_insn_addr, \
597 adjusted_insn_addr_end, \
599 (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
600 collector,lockaddr, \
601 orig_size, jump_entry, \
605 jjump_pad_insn_size, \
606 adjusted_insn_addr, \
607 adjusted_insn_addr_end, \
610 #define target_emit_ops() \
611 (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
613 #define target_supports_disable_randomization() \
614 (the_target->supports_disable_randomization ? \
615 (*the_target->supports_disable_randomization) () : 0)
617 #define target_supports_agent() \
618 (the_target->supports_agent ? \
619 (*the_target->supports_agent) () : 0)
621 static inline struct btrace_target_info
*
622 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
624 if (the_target
->enable_btrace
== nullptr)
625 error (_("Target does not support branch tracing."));
627 return (*the_target
->enable_btrace
) (ptid
, conf
);
631 target_disable_btrace (struct btrace_target_info
*tinfo
)
633 if (the_target
->disable_btrace
== nullptr)
634 error (_("Target does not support branch tracing."));
636 return (*the_target
->disable_btrace
) (tinfo
);
640 target_read_btrace (struct btrace_target_info
*tinfo
,
641 struct buffer
*buffer
,
642 enum btrace_read_type type
)
644 if (the_target
->read_btrace
== nullptr)
645 error (_("Target does not support branch tracing."));
647 return (*the_target
->read_btrace
) (tinfo
, buffer
, type
);
651 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
652 struct buffer
*buffer
)
654 if (the_target
->read_btrace_conf
== nullptr)
655 error (_("Target does not support branch tracing."));
657 return (*the_target
->read_btrace_conf
) (tinfo
, buffer
);
660 #define target_supports_range_stepping() \
661 (the_target->supports_range_stepping ? \
662 (*the_target->supports_range_stepping) () : 0)
664 #define target_supports_stopped_by_sw_breakpoint() \
665 the_target->pt->supports_stopped_by_sw_breakpoint ()
667 #define target_stopped_by_sw_breakpoint() \
668 the_target->pt->stopped_by_sw_breakpoint ()
670 #define target_supports_stopped_by_hw_breakpoint() \
671 the_target->pt->supports_stopped_by_hw_breakpoint ()
673 #define target_supports_hardware_single_step() \
674 the_target->pt->supports_hardware_single_step ()
676 #define target_stopped_by_hw_breakpoint() \
677 the_target->pt->stopped_by_hw_breakpoint ()
679 #define target_breakpoint_kind_from_pc(pcptr) \
680 (the_target->breakpoint_kind_from_pc \
681 ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
682 : default_breakpoint_kind_from_pc (pcptr))
684 #define target_breakpoint_kind_from_current_state(pcptr) \
685 (the_target->breakpoint_kind_from_current_state \
686 ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
687 : target_breakpoint_kind_from_pc (pcptr))
689 #define target_supports_software_single_step() \
690 (the_target->supports_software_single_step ? \
691 (*the_target->supports_software_single_step) () : 0)
693 /* Start non-stop mode, returns 0 on success, -1 on failure. */
695 int start_non_stop (int nonstop
);
697 ptid_t
mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
700 /* Prepare to read or write memory from the inferior process. See the
701 corresponding process_stratum_target methods for more details. */
703 int prepare_to_access_memory (void);
704 void done_accessing_memory (void);
706 #define target_core_of_thread(ptid) \
707 (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
710 #define target_thread_name(ptid) \
711 (the_target->thread_name ? (*the_target->thread_name) (ptid) \
714 #define target_thread_handle(ptid, handle, handle_len) \
715 (the_target->thread_handle ? (*the_target->thread_handle) \
716 (ptid, handle, handle_len) \
719 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
721 int set_desired_thread ();
723 const char *target_pid_to_str (ptid_t
);
725 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
727 #endif /* GDBSERVER_TARGET_H */