1 /* Target operations for the remote server for GDB.
2 Copyright (C) 2002-2019 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 /* Start a new process.
70 PROGRAM is a path to the program to execute.
71 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
72 to be passed to the inferior as ``argv'' (along with PROGRAM).
74 Returns the new PID on success, -1 on failure. Registers the new
75 process with the process list. */
76 int (*create_inferior
) (const char *program
,
77 const std::vector
<char *> &program_args
);
79 /* Do additional setup after a new process is created, including
80 exec-wrapper completion. */
81 void (*post_create_inferior
) (void);
83 /* Attach to a running process.
85 PID is the process ID to attach to, specified by the user
88 Returns -1 if attaching is unsupported, 0 on success, and calls
91 int (*attach
) (unsigned long pid
);
93 /* Kill process PROC. Return -1 on failure, and 0 on success. */
95 int (*kill
) (process_info
*proc
);
97 /* Detach from process PROC. Return -1 on failure, and 0 on
100 int (*detach
) (process_info
*proc
);
102 /* The inferior process has died. Do what is right. */
104 void (*mourn
) (struct process_info
*proc
);
106 /* Wait for process PID to exit. */
108 void (*join
) (int pid
);
110 /* Return 1 iff the thread with process ID PID is alive. */
112 int (*thread_alive
) (ptid_t pid
);
114 /* Resume the inferior process. */
116 void (*resume
) (struct thread_resume
*resume_info
, size_t n
);
118 /* Wait for the inferior process or thread to change state. Store
119 status through argument pointer STATUS.
121 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
122 wait for any thread of process pid to do something. Return ptid
123 of child, or -1 in case of error; store status through argument
124 pointer STATUS. OPTIONS is a bit set of options defined as
125 TARGET_W* above. If options contains TARGET_WNOHANG and there's
126 no child stop to report, return is
127 null_ptid/TARGET_WAITKIND_IGNORE. */
129 ptid_t (*wait
) (ptid_t ptid
, struct target_waitstatus
*status
, int options
);
131 /* Fetch registers from the inferior process.
133 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
135 void (*fetch_registers
) (struct regcache
*regcache
, int regno
);
137 /* Store registers to the inferior process.
139 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
141 void (*store_registers
) (struct regcache
*regcache
, int regno
);
143 /* Prepare to read or write memory from the inferior process.
144 Targets use this to do what is necessary to get the state of the
145 inferior such that it is possible to access memory.
147 This should generally only be called from client facing routines,
148 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
151 Like `read_memory' and `write_memory' below, returns 0 on success
152 and errno on failure. */
154 int (*prepare_to_access_memory
) (void);
156 /* Undo the effects of prepare_to_access_memory. */
158 void (*done_accessing_memory
) (void);
160 /* Read memory from the inferior process. This should generally be
161 called through read_inferior_memory, which handles breakpoint shadowing.
163 Read LEN bytes at MEMADDR into a buffer at MYADDR.
165 Returns 0 on success and errno on failure. */
167 int (*read_memory
) (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
169 /* Write memory to the inferior process. This should generally be
170 called through target_write_memory, which handles breakpoint shadowing.
172 Write LEN bytes from the buffer at MYADDR to MEMADDR.
174 Returns 0 on success and errno on failure. */
176 int (*write_memory
) (CORE_ADDR memaddr
, const unsigned char *myaddr
,
179 /* Query GDB for the values of any symbols we're interested in.
180 This function is called whenever we receive a "qSymbols::"
181 query, which corresponds to every time more symbols (might)
182 become available. NULL if we aren't interested in any
185 void (*look_up_symbols
) (void);
187 /* Send an interrupt request to the inferior process,
188 however is appropriate. */
190 void (*request_interrupt
) (void);
192 /* Read auxiliary vector data from the inferior process.
194 Read LEN bytes at OFFSET into a buffer at MYADDR. */
196 int (*read_auxv
) (CORE_ADDR offset
, unsigned char *myaddr
,
199 /* Returns true if GDB Z breakpoint type TYPE is supported, false
200 otherwise. The type is coded as follows:
201 '0' - software-breakpoint
202 '1' - hardware-breakpoint
203 '2' - write watchpoint
204 '3' - read watchpoint
205 '4' - access watchpoint
207 int (*supports_z_point_type
) (char z_type
);
209 /* Insert and remove a break or watchpoint.
210 Returns 0 on success, -1 on failure and 1 on unsupported. */
212 int (*insert_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
213 int size
, struct raw_breakpoint
*bp
);
214 int (*remove_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
215 int size
, struct raw_breakpoint
*bp
);
217 /* Returns 1 if the target stopped because it executed a software
218 breakpoint instruction, 0 otherwise. */
219 int (*stopped_by_sw_breakpoint
) (void);
221 /* Returns true if the target knows whether a trap was caused by a
222 SW breakpoint triggering. */
223 int (*supports_stopped_by_sw_breakpoint
) (void);
225 /* Returns 1 if the target stopped for a hardware breakpoint. */
226 int (*stopped_by_hw_breakpoint
) (void);
228 /* Returns true if the target knows whether a trap was caused by a
229 HW breakpoint triggering. */
230 int (*supports_stopped_by_hw_breakpoint
) (void);
232 /* Returns true if the target can do hardware single step. */
233 int (*supports_hardware_single_step
) (void);
235 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
237 int (*stopped_by_watchpoint
) (void);
239 /* Returns the address associated with the watchpoint that hit, if any;
240 returns 0 otherwise. */
242 CORE_ADDR (*stopped_data_address
) (void);
244 /* Reports the text, data offsets of the executable. This is
245 needed for uclinux where the executable is relocated during load
248 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
250 /* Fetch the address associated with a specific thread local storage
251 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
252 Stores it in *ADDRESS and returns zero on success; otherwise returns
253 an error code. A return value of -1 means this system does not
254 support the operation. */
256 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
257 CORE_ADDR load_module
, CORE_ADDR
*address
);
259 /* Fill BUF with an hostio error packet representing the last hostio
261 void (*hostio_last_error
) (char *buf
);
263 /* Read/Write OS data using qXfer packets. */
264 int (*qxfer_osdata
) (const char *annex
, unsigned char *readbuf
,
265 unsigned const char *writebuf
, CORE_ADDR offset
,
268 /* Read/Write extra signal info. */
269 int (*qxfer_siginfo
) (const char *annex
, unsigned char *readbuf
,
270 unsigned const char *writebuf
,
271 CORE_ADDR offset
, int len
);
273 int (*supports_non_stop
) (void);
275 /* Enables async target events. Returns the previous enable
277 int (*async
) (int enable
);
279 /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
280 success, -1 otherwise. */
281 int (*start_non_stop
) (int);
283 /* Returns true if the target supports multi-process debugging. */
284 int (*supports_multi_process
) (void);
286 /* Returns true if fork events are supported. */
287 int (*supports_fork_events
) (void);
289 /* Returns true if vfork events are supported. */
290 int (*supports_vfork_events
) (void);
292 /* Returns true if exec events are supported. */
293 int (*supports_exec_events
) (void);
295 /* Allows target to re-initialize connection-specific settings. */
296 void (*handle_new_gdb_connection
) (void);
298 /* If not NULL, target-specific routine to process monitor command.
299 Returns 1 if handled, or 0 to perform default processing. */
300 int (*handle_monitor_command
) (char *);
302 /* Returns the core given a thread, or -1 if not known. */
303 int (*core_of_thread
) (ptid_t
);
305 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
306 int (*read_loadmap
) (const char *annex
, CORE_ADDR offset
,
307 unsigned char *myaddr
, unsigned int len
);
309 /* Target specific qSupported support. FEATURES is an array of
310 features with COUNT elements. */
311 void (*process_qsupported
) (char **features
, int count
);
313 /* Return 1 if the target supports tracepoints, 0 (or leave the
314 callback NULL) otherwise. */
315 int (*supports_tracepoints
) (void);
317 /* Read PC from REGCACHE. */
318 CORE_ADDR (*read_pc
) (struct regcache
*regcache
);
320 /* Write PC to REGCACHE. */
321 void (*write_pc
) (struct regcache
*regcache
, CORE_ADDR pc
);
323 /* Return true if THREAD is known to be stopped now. */
324 int (*thread_stopped
) (struct thread_info
*thread
);
326 /* Read Thread Information Block address. */
327 int (*get_tib_address
) (ptid_t ptid
, CORE_ADDR
*address
);
329 /* Pause all threads. If FREEZE, arrange for any resume attempt to
330 be ignored until an unpause_all call unfreezes threads again.
331 There can be nested calls to pause_all, so a freeze counter
332 should be maintained. */
333 void (*pause_all
) (int freeze
);
335 /* Unpause all threads. Threads that hadn't been resumed by the
336 client should be left stopped. Basically a pause/unpause call
337 pair should not end up resuming threads that were stopped before
339 void (*unpause_all
) (int unfreeze
);
341 /* Stabilize all threads. That is, force them out of jump pads. */
342 void (*stabilize_threads
) (void);
344 /* Install a fast tracepoint jump pad. TPOINT is the address of the
345 tracepoint internal object as used by the IPA agent. TPADDR is
346 the address of tracepoint. COLLECTOR is address of the function
347 the jump pad redirects to. LOCKADDR is the address of the jump
348 pad lock object. ORIG_SIZE is the size in bytes of the
349 instruction at TPADDR. JUMP_ENTRY points to the address of the
350 jump pad entry, and on return holds the address past the end of
351 the created jump pad. If a trampoline is created by the function,
352 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
353 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
354 buffer containing a copy of the instruction at TPADDR.
355 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
356 return the address range where the instruction at TPADDR was relocated
357 to. If an error occurs, the ERR may be used to pass on an error
359 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
363 CORE_ADDR
*jump_entry
,
364 CORE_ADDR
*trampoline
,
365 ULONGEST
*trampoline_size
,
366 unsigned char *jjump_pad_insn
,
367 ULONGEST
*jjump_pad_insn_size
,
368 CORE_ADDR
*adjusted_insn_addr
,
369 CORE_ADDR
*adjusted_insn_addr_end
,
372 /* Return the bytecode operations vector for the current inferior.
373 Returns NULL if bytecode compilation is not supported. */
374 struct emit_ops
*(*emit_ops
) (void);
376 /* Returns true if the target supports disabling randomization. */
377 int (*supports_disable_randomization
) (void);
379 /* Return the minimum length of an instruction that can be safely overwritten
380 for use as a fast tracepoint. */
381 int (*get_min_fast_tracepoint_insn_len
) (void);
383 /* Read solib info on SVR4 platforms. */
384 int (*qxfer_libraries_svr4
) (const char *annex
, unsigned char *readbuf
,
385 unsigned const char *writebuf
,
386 CORE_ADDR offset
, int len
);
388 /* Return true if target supports debugging agent. */
389 int (*supports_agent
) (void);
391 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
392 target information struct for reading and for disabling branch trace. */
393 struct btrace_target_info
*(*enable_btrace
)
394 (ptid_t ptid
, const struct btrace_config
*conf
);
396 /* Disable branch tracing.
397 Returns zero on success, non-zero otherwise. */
398 int (*disable_btrace
) (struct btrace_target_info
*tinfo
);
400 /* Read branch trace data into buffer.
401 Return 0 on success; print an error message into BUFFER and return -1,
403 int (*read_btrace
) (struct btrace_target_info
*, struct buffer
*,
404 enum btrace_read_type type
);
406 /* Read the branch trace configuration into BUFFER.
407 Return 0 on success; print an error message into BUFFER and return -1
409 int (*read_btrace_conf
) (const struct btrace_target_info
*, struct buffer
*);
411 /* Return true if target supports range stepping. */
412 int (*supports_range_stepping
) (void);
414 /* Return the full absolute name of the executable file that was
415 run to create the process PID. If the executable file cannot
416 be determined, NULL is returned. Otherwise, a pointer to a
417 character string containing the pathname is returned. This
418 string should be copied into a buffer by the client if the string
419 will not be immediately used, or if it must persist. */
420 char *(*pid_to_exec_file
) (int pid
);
422 /* Multiple-filesystem-aware open. Like open(2), but operating in
423 the filesystem as it appears to process PID. Systems where all
424 processes share a common filesystem should set this to NULL.
425 If NULL, the caller should fall back to open(2). */
426 int (*multifs_open
) (int pid
, const char *filename
,
427 int flags
, mode_t mode
);
429 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
430 in the filesystem as it appears to process PID. Systems where
431 all processes share a common filesystem should set this to NULL.
432 If NULL, the caller should fall back to unlink(2). */
433 int (*multifs_unlink
) (int pid
, const char *filename
);
435 /* Multiple-filesystem-aware readlink. Like readlink(2), but
436 operating in the filesystem as it appears to process PID.
437 Systems where all processes share a common filesystem should
438 set this to NULL. If NULL, the caller should fall back to
440 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
441 char *buf
, size_t bufsiz
);
443 /* Return the breakpoint kind for this target based on PC. The PCPTR is
444 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
445 ARM) was present in the PC. */
446 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
448 /* Return the software breakpoint from KIND. KIND can have target
449 specific meaning like the Z0 kind parameter.
450 SIZE is set to the software breakpoint's length in memory. */
451 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
453 /* Return the thread's name, or NULL if the target is unable to determine it.
454 The returned value must not be freed by the caller. */
455 const char *(*thread_name
) (ptid_t thread
);
457 /* Return the breakpoint kind for this target based on the current
458 processor state (e.g. the current instruction mode on ARM) and the
459 PC. The PCPTR is adjusted to the real memory location in case a flag
460 (e.g., the Thumb bit on ARM) is present in the PC. */
461 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
463 /* Returns true if the target can software single step. */
464 int (*supports_software_single_step
) (void);
466 /* Return 1 if the target supports catch syscall, 0 (or leave the
467 callback NULL) otherwise. */
468 int (*supports_catch_syscall
) (void);
470 /* Return tdesc index for IPA. */
471 int (*get_ipa_tdesc_idx
) (void);
473 /* Thread ID to (numeric) thread handle: Return true on success and
474 false for failure. Return pointer to thread handle via HANDLE
475 and the handle's length via HANDLE_LEN. */
476 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
479 extern struct target_ops
*the_target
;
481 void set_target_ops (struct target_ops
*);
483 #define create_inferior(program, program_args) \
484 (*the_target->create_inferior) (program, program_args)
486 #define target_post_create_inferior() \
489 if (the_target->post_create_inferior != NULL) \
490 (*the_target->post_create_inferior) (); \
493 #define myattach(pid) \
494 (*the_target->attach) (pid)
496 int kill_inferior (process_info
*proc
);
498 #define target_supports_fork_events() \
499 (the_target->supports_fork_events ? \
500 (*the_target->supports_fork_events) () : 0)
502 #define target_supports_vfork_events() \
503 (the_target->supports_vfork_events ? \
504 (*the_target->supports_vfork_events) () : 0)
506 #define target_supports_exec_events() \
507 (the_target->supports_exec_events ? \
508 (*the_target->supports_exec_events) () : 0)
510 #define target_handle_new_gdb_connection() \
513 if (the_target->handle_new_gdb_connection != NULL) \
514 (*the_target->handle_new_gdb_connection) (); \
517 #define detach_inferior(proc) \
518 (*the_target->detach) (proc)
520 #define mythread_alive(pid) \
521 (*the_target->thread_alive) (pid)
523 #define fetch_inferior_registers(regcache, regno) \
524 (*the_target->fetch_registers) (regcache, regno)
526 #define store_inferior_registers(regcache, regno) \
527 (*the_target->store_registers) (regcache, regno)
529 #define join_inferior(pid) \
530 (*the_target->join) (pid)
532 #define target_supports_non_stop() \
533 (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
535 #define target_async(enable) \
536 (the_target->async ? (*the_target->async) (enable) : 0)
538 #define target_process_qsupported(features, count) \
541 if (the_target->process_qsupported) \
542 the_target->process_qsupported (features, count); \
545 #define target_supports_catch_syscall() \
546 (the_target->supports_catch_syscall ? \
547 (*the_target->supports_catch_syscall) () : 0)
549 #define target_get_ipa_tdesc_idx() \
550 (the_target->get_ipa_tdesc_idx \
551 ? (*the_target->get_ipa_tdesc_idx) () : 0)
553 #define target_supports_tracepoints() \
554 (the_target->supports_tracepoints \
555 ? (*the_target->supports_tracepoints) () : 0)
557 #define target_supports_fast_tracepoints() \
558 (the_target->install_fast_tracepoint_jump_pad != NULL)
560 #define target_get_min_fast_tracepoint_insn_len() \
561 (the_target->get_min_fast_tracepoint_insn_len \
562 ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
564 #define thread_stopped(thread) \
565 (*the_target->thread_stopped) (thread)
567 #define pause_all(freeze) \
570 if (the_target->pause_all) \
571 (*the_target->pause_all) (freeze); \
574 #define unpause_all(unfreeze) \
577 if (the_target->unpause_all) \
578 (*the_target->unpause_all) (unfreeze); \
581 #define stabilize_threads() \
584 if (the_target->stabilize_threads) \
585 (*the_target->stabilize_threads) (); \
588 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
589 collector, lockaddr, \
592 trampoline, trampoline_size, \
594 jjump_pad_insn_size, \
595 adjusted_insn_addr, \
596 adjusted_insn_addr_end, \
598 (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
599 collector,lockaddr, \
600 orig_size, jump_entry, \
604 jjump_pad_insn_size, \
605 adjusted_insn_addr, \
606 adjusted_insn_addr_end, \
609 #define target_emit_ops() \
610 (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
612 #define target_supports_disable_randomization() \
613 (the_target->supports_disable_randomization ? \
614 (*the_target->supports_disable_randomization) () : 0)
616 #define target_supports_agent() \
617 (the_target->supports_agent ? \
618 (*the_target->supports_agent) () : 0)
620 static inline struct btrace_target_info
*
621 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
623 if (the_target
->enable_btrace
== nullptr)
624 error (_("Target does not support branch tracing."));
626 return (*the_target
->enable_btrace
) (ptid
, conf
);
630 target_disable_btrace (struct btrace_target_info
*tinfo
)
632 if (the_target
->disable_btrace
== nullptr)
633 error (_("Target does not support branch tracing."));
635 return (*the_target
->disable_btrace
) (tinfo
);
639 target_read_btrace (struct btrace_target_info
*tinfo
,
640 struct buffer
*buffer
,
641 enum btrace_read_type type
)
643 if (the_target
->read_btrace
== nullptr)
644 error (_("Target does not support branch tracing."));
646 return (*the_target
->read_btrace
) (tinfo
, buffer
, type
);
650 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
651 struct buffer
*buffer
)
653 if (the_target
->read_btrace_conf
== nullptr)
654 error (_("Target does not support branch tracing."));
656 return (*the_target
->read_btrace_conf
) (tinfo
, buffer
);
659 #define target_supports_range_stepping() \
660 (the_target->supports_range_stepping ? \
661 (*the_target->supports_range_stepping) () : 0)
663 #define target_supports_stopped_by_sw_breakpoint() \
664 (the_target->supports_stopped_by_sw_breakpoint ? \
665 (*the_target->supports_stopped_by_sw_breakpoint) () : 0)
667 #define target_stopped_by_sw_breakpoint() \
668 (the_target->stopped_by_sw_breakpoint ? \
669 (*the_target->stopped_by_sw_breakpoint) () : 0)
671 #define target_supports_stopped_by_hw_breakpoint() \
672 (the_target->supports_stopped_by_hw_breakpoint ? \
673 (*the_target->supports_stopped_by_hw_breakpoint) () : 0)
675 #define target_supports_hardware_single_step() \
676 (the_target->supports_hardware_single_step ? \
677 (*the_target->supports_hardware_single_step) () : 0)
679 #define target_stopped_by_hw_breakpoint() \
680 (the_target->stopped_by_hw_breakpoint ? \
681 (*the_target->stopped_by_hw_breakpoint) () : 0)
683 #define target_breakpoint_kind_from_pc(pcptr) \
684 (the_target->breakpoint_kind_from_pc \
685 ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
686 : default_breakpoint_kind_from_pc (pcptr))
688 #define target_breakpoint_kind_from_current_state(pcptr) \
689 (the_target->breakpoint_kind_from_current_state \
690 ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
691 : target_breakpoint_kind_from_pc (pcptr))
693 #define target_supports_software_single_step() \
694 (the_target->supports_software_single_step ? \
695 (*the_target->supports_software_single_step) () : 0)
697 /* Start non-stop mode, returns 0 on success, -1 on failure. */
699 int start_non_stop (int nonstop
);
701 ptid_t
mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
704 /* Prepare to read or write memory from the inferior process. See the
705 corresponding target_ops methods for more details. */
707 int prepare_to_access_memory (void);
708 void done_accessing_memory (void);
710 #define target_core_of_thread(ptid) \
711 (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
714 #define target_thread_name(ptid) \
715 (the_target->thread_name ? (*the_target->thread_name) (ptid) \
718 #define target_thread_handle(ptid, handle, handle_len) \
719 (the_target->thread_handle ? (*the_target->thread_handle) \
720 (ptid, handle, handle_len) \
723 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
725 int set_desired_thread ();
727 const char *target_pid_to_str (ptid_t
);
729 int target_can_do_hardware_single_step (void);
731 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
733 #endif /* GDBSERVER_TARGET_H */