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 int (*supports_non_stop
) (void);
75 /* Enables async target events. Returns the previous enable
77 int (*async
) (int enable
);
79 /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
80 success, -1 otherwise. */
81 int (*start_non_stop
) (int);
83 /* Returns true if the target supports multi-process debugging. */
84 int (*supports_multi_process
) (void);
86 /* Returns true if fork events are supported. */
87 int (*supports_fork_events
) (void);
89 /* Returns true if vfork events are supported. */
90 int (*supports_vfork_events
) (void);
92 /* Returns true if exec events are supported. */
93 int (*supports_exec_events
) (void);
95 /* Allows target to re-initialize connection-specific settings. */
96 void (*handle_new_gdb_connection
) (void);
98 /* If not NULL, target-specific routine to process monitor command.
99 Returns 1 if handled, or 0 to perform default processing. */
100 int (*handle_monitor_command
) (char *);
102 /* Returns the core given a thread, or -1 if not known. */
103 int (*core_of_thread
) (ptid_t
);
105 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
106 int (*read_loadmap
) (const char *annex
, CORE_ADDR offset
,
107 unsigned char *myaddr
, unsigned int len
);
109 /* Target specific qSupported support. FEATURES is an array of
110 features with COUNT elements. */
111 void (*process_qsupported
) (char **features
, int count
);
113 /* Return 1 if the target supports tracepoints, 0 (or leave the
114 callback NULL) otherwise. */
115 int (*supports_tracepoints
) (void);
117 /* Read PC from REGCACHE. */
118 CORE_ADDR (*read_pc
) (struct regcache
*regcache
);
120 /* Write PC to REGCACHE. */
121 void (*write_pc
) (struct regcache
*regcache
, CORE_ADDR pc
);
123 /* Return true if THREAD is known to be stopped now. */
124 int (*thread_stopped
) (struct thread_info
*thread
);
126 /* Read Thread Information Block address. */
127 int (*get_tib_address
) (ptid_t ptid
, CORE_ADDR
*address
);
129 /* Pause all threads. If FREEZE, arrange for any resume attempt to
130 be ignored until an unpause_all call unfreezes threads again.
131 There can be nested calls to pause_all, so a freeze counter
132 should be maintained. */
133 void (*pause_all
) (int freeze
);
135 /* Unpause all threads. Threads that hadn't been resumed by the
136 client should be left stopped. Basically a pause/unpause call
137 pair should not end up resuming threads that were stopped before
139 void (*unpause_all
) (int unfreeze
);
141 /* Stabilize all threads. That is, force them out of jump pads. */
142 void (*stabilize_threads
) (void);
144 /* Install a fast tracepoint jump pad. TPOINT is the address of the
145 tracepoint internal object as used by the IPA agent. TPADDR is
146 the address of tracepoint. COLLECTOR is address of the function
147 the jump pad redirects to. LOCKADDR is the address of the jump
148 pad lock object. ORIG_SIZE is the size in bytes of the
149 instruction at TPADDR. JUMP_ENTRY points to the address of the
150 jump pad entry, and on return holds the address past the end of
151 the created jump pad. If a trampoline is created by the function,
152 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
153 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
154 buffer containing a copy of the instruction at TPADDR.
155 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
156 return the address range where the instruction at TPADDR was relocated
157 to. If an error occurs, the ERR may be used to pass on an error
159 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
163 CORE_ADDR
*jump_entry
,
164 CORE_ADDR
*trampoline
,
165 ULONGEST
*trampoline_size
,
166 unsigned char *jjump_pad_insn
,
167 ULONGEST
*jjump_pad_insn_size
,
168 CORE_ADDR
*adjusted_insn_addr
,
169 CORE_ADDR
*adjusted_insn_addr_end
,
172 /* Return the bytecode operations vector for the current inferior.
173 Returns NULL if bytecode compilation is not supported. */
174 struct emit_ops
*(*emit_ops
) (void);
176 /* Returns true if the target supports disabling randomization. */
177 int (*supports_disable_randomization
) (void);
179 /* Return the minimum length of an instruction that can be safely overwritten
180 for use as a fast tracepoint. */
181 int (*get_min_fast_tracepoint_insn_len
) (void);
183 /* Read solib info on SVR4 platforms. */
184 int (*qxfer_libraries_svr4
) (const char *annex
, unsigned char *readbuf
,
185 unsigned const char *writebuf
,
186 CORE_ADDR offset
, int len
);
188 /* Return true if target supports debugging agent. */
189 int (*supports_agent
) (void);
191 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
192 target information struct for reading and for disabling branch trace. */
193 struct btrace_target_info
*(*enable_btrace
)
194 (ptid_t ptid
, const struct btrace_config
*conf
);
196 /* Disable branch tracing.
197 Returns zero on success, non-zero otherwise. */
198 int (*disable_btrace
) (struct btrace_target_info
*tinfo
);
200 /* Read branch trace data into buffer.
201 Return 0 on success; print an error message into BUFFER and return -1,
203 int (*read_btrace
) (struct btrace_target_info
*, struct buffer
*,
204 enum btrace_read_type type
);
206 /* Read the branch trace configuration into BUFFER.
207 Return 0 on success; print an error message into BUFFER and return -1
209 int (*read_btrace_conf
) (const struct btrace_target_info
*, struct buffer
*);
211 /* Return true if target supports range stepping. */
212 int (*supports_range_stepping
) (void);
214 /* Return the full absolute name of the executable file that was
215 run to create the process PID. If the executable file cannot
216 be determined, NULL is returned. Otherwise, a pointer to a
217 character string containing the pathname is returned. This
218 string should be copied into a buffer by the client if the string
219 will not be immediately used, or if it must persist. */
220 char *(*pid_to_exec_file
) (int pid
);
222 /* Multiple-filesystem-aware open. Like open(2), but operating in
223 the filesystem as it appears to process PID. Systems where all
224 processes share a common filesystem should set this to NULL.
225 If NULL, the caller should fall back to open(2). */
226 int (*multifs_open
) (int pid
, const char *filename
,
227 int flags
, mode_t mode
);
229 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
230 in the filesystem as it appears to process PID. Systems where
231 all processes share a common filesystem should set this to NULL.
232 If NULL, the caller should fall back to unlink(2). */
233 int (*multifs_unlink
) (int pid
, const char *filename
);
235 /* Multiple-filesystem-aware readlink. Like readlink(2), but
236 operating in the filesystem as it appears to process PID.
237 Systems where all processes share a common filesystem should
238 set this to NULL. If NULL, the caller should fall back to
240 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
241 char *buf
, size_t bufsiz
);
243 /* Return the breakpoint kind for this target based on PC. The PCPTR is
244 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
245 ARM) was present in the PC. */
246 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
248 /* Return the software breakpoint from KIND. KIND can have target
249 specific meaning like the Z0 kind parameter.
250 SIZE is set to the software breakpoint's length in memory. */
251 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
253 /* Return the thread's name, or NULL if the target is unable to determine it.
254 The returned value must not be freed by the caller. */
255 const char *(*thread_name
) (ptid_t thread
);
257 /* Return the breakpoint kind for this target based on the current
258 processor state (e.g. the current instruction mode on ARM) and the
259 PC. The PCPTR is adjusted to the real memory location in case a flag
260 (e.g., the Thumb bit on ARM) is present in the PC. */
261 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
263 /* Returns true if the target can software single step. */
264 int (*supports_software_single_step
) (void);
266 /* Return 1 if the target supports catch syscall, 0 (or leave the
267 callback NULL) otherwise. */
268 int (*supports_catch_syscall
) (void);
270 /* Return tdesc index for IPA. */
271 int (*get_ipa_tdesc_idx
) (void);
273 /* Thread ID to (numeric) thread handle: Return true on success and
274 false for failure. Return pointer to thread handle via HANDLE
275 and the handle's length via HANDLE_LEN. */
276 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
278 /* The object that will gradually replace this struct. */
286 virtual ~process_target () = default;
288 /* Start a new process.
290 PROGRAM is a path to the program to execute.
291 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
292 to be passed to the inferior as ``argv'' (along with PROGRAM).
294 Returns the new PID on success, -1 on failure. Registers the new
295 process with the process list. */
296 virtual int create_inferior (const char *program
,
297 const std::vector
<char *> &program_args
) = 0;
299 /* Do additional setup after a new process is created, including
300 exec-wrapper completion. */
301 virtual void post_create_inferior ();
303 /* Attach to a running process.
305 PID is the process ID to attach to, specified by the user
308 Returns -1 if attaching is unsupported, 0 on success, and calls
309 error() otherwise. */
310 virtual int attach (unsigned long pid
) = 0;
312 /* Kill process PROC. Return -1 on failure, and 0 on success. */
313 virtual int kill (process_info
*proc
) = 0;
315 /* Detach from process PROC. Return -1 on failure, and 0 on
317 virtual int detach (process_info
*proc
) = 0;
319 /* The inferior process has died. Do what is right. */
320 virtual void mourn (process_info
*proc
) = 0;
322 /* Wait for process PID to exit. */
323 virtual void join (int pid
) = 0;
325 /* Return true iff the thread with process ID PID is alive. */
326 virtual bool thread_alive (ptid_t pid
) = 0;
328 /* Resume the inferior process. */
329 virtual void resume (thread_resume
*resume_info
, size_t n
) = 0;
331 /* Wait for the inferior process or thread to change state. Store
332 status through argument pointer STATUS.
334 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
335 wait for any thread of process pid to do something. Return ptid
336 of child, or -1 in case of error; store status through argument
337 pointer STATUS. OPTIONS is a bit set of options defined as
338 TARGET_W* above. If options contains TARGET_WNOHANG and there's
339 no child stop to report, return is
340 null_ptid/TARGET_WAITKIND_IGNORE. */
341 virtual ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
344 /* Fetch registers from the inferior process.
346 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
347 virtual void fetch_registers (regcache
*regcache
, int regno
) = 0;
349 /* Store registers to the inferior process.
351 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
352 virtual void store_registers (regcache
*regcache
, int regno
) = 0;
354 /* Prepare to read or write memory from the inferior process.
355 Targets use this to do what is necessary to get the state of the
356 inferior such that it is possible to access memory.
358 This should generally only be called from client facing routines,
359 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
362 Like `read_memory' and `write_memory' below, returns 0 on success
363 and errno on failure. */
364 virtual int prepare_to_access_memory ();
366 /* Undo the effects of prepare_to_access_memory. */
367 virtual void done_accessing_memory ();
369 /* Read memory from the inferior process. This should generally be
370 called through read_inferior_memory, which handles breakpoint shadowing.
372 Read LEN bytes at MEMADDR into a buffer at MYADDR.
374 Returns 0 on success and errno on failure. */
375 virtual int read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
378 /* Write memory to the inferior process. This should generally be
379 called through target_write_memory, which handles breakpoint shadowing.
381 Write LEN bytes from the buffer at MYADDR to MEMADDR.
383 Returns 0 on success and errno on failure. */
384 virtual int write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
387 /* Query GDB for the values of any symbols we're interested in.
388 This function is called whenever we receive a "qSymbols::"
389 query, which corresponds to every time more symbols (might)
391 virtual void look_up_symbols ();
393 /* Send an interrupt request to the inferior process,
394 however is appropriate. */
395 virtual void request_interrupt () = 0;
397 /* Return true if the read_auxv target op is supported. */
398 virtual bool supports_read_auxv ();
400 /* Read auxiliary vector data from the inferior process.
402 Read LEN bytes at OFFSET into a buffer at MYADDR. */
403 virtual int read_auxv (CORE_ADDR offset
, unsigned char *myaddr
,
406 /* Returns true if GDB Z breakpoint type TYPE is supported, false
407 otherwise. The type is coded as follows:
408 '0' - software-breakpoint
409 '1' - hardware-breakpoint
410 '2' - write watchpoint
411 '3' - read watchpoint
412 '4' - access watchpoint
414 virtual bool supports_z_point_type (char z_type
);
416 /* Insert and remove a break or watchpoint.
417 Returns 0 on success, -1 on failure and 1 on unsupported. */
418 virtual int insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
419 int size
, raw_breakpoint
*bp
);
421 virtual int remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
422 int size
, raw_breakpoint
*bp
);
424 /* Returns true if the target stopped because it executed a software
425 breakpoint instruction, false otherwise. */
426 virtual bool stopped_by_sw_breakpoint ();
428 /* Returns true if the target knows whether a trap was caused by a
429 SW breakpoint triggering. */
430 virtual bool supports_stopped_by_sw_breakpoint ();
432 /* Returns true if the target stopped for a hardware breakpoint. */
433 virtual bool stopped_by_hw_breakpoint ();
435 /* Returns true if the target knows whether a trap was caused by a
436 HW breakpoint triggering. */
437 virtual bool supports_stopped_by_hw_breakpoint ();
439 /* Returns true if the target can do hardware single step. */
440 virtual bool supports_hardware_single_step ();
442 /* Returns true if target was stopped due to a watchpoint hit, false
444 virtual bool stopped_by_watchpoint ();
446 /* Returns the address associated with the watchpoint that hit, if any;
447 returns 0 otherwise. */
448 virtual CORE_ADDR
stopped_data_address ();
450 /* Return true if the read_offsets target op is supported. */
451 virtual bool supports_read_offsets ();
453 /* Reports the text, data offsets of the executable. This is
454 needed for uclinux where the executable is relocated during load
456 virtual int read_offsets (CORE_ADDR
*text
, CORE_ADDR
*data
);
458 /* Return true if the get_tls_address target op is supported. */
459 virtual bool supports_get_tls_address ();
461 /* Fetch the address associated with a specific thread local storage
462 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
463 Stores it in *ADDRESS and returns zero on success; otherwise returns
464 an error code. A return value of -1 means this system does not
465 support the operation. */
466 virtual int get_tls_address (thread_info
*thread
, CORE_ADDR offset
,
467 CORE_ADDR load_module
, CORE_ADDR
*address
);
469 /* Fill BUF with an hostio error packet representing the last hostio
471 virtual void hostio_last_error (char *buf
);
473 /* Return true if the qxfer_osdata target op is supported. */
474 virtual bool supports_qxfer_osdata ();
476 /* Read/Write OS data using qXfer packets. */
477 virtual int qxfer_osdata (const char *annex
, unsigned char *readbuf
,
478 unsigned const char *writebuf
,
479 CORE_ADDR offset
, int len
);
481 /* Return true if the qxfer_siginfo target op is supported. */
482 virtual bool supports_qxfer_siginfo ();
484 /* Read/Write extra signal info. */
485 virtual int qxfer_siginfo (const char *annex
, unsigned char *readbuf
,
486 unsigned const char *writebuf
,
487 CORE_ADDR offset
, int len
);
490 extern process_stratum_target
*the_target
;
492 void set_target_ops (process_stratum_target
*);
494 #define target_create_inferior(program, program_args) \
495 the_target->pt->create_inferior (program, program_args)
497 #define target_post_create_inferior() \
498 the_target->pt->post_create_inferior ()
500 #define myattach(pid) \
501 the_target->pt->attach (pid)
503 int kill_inferior (process_info
*proc
);
505 #define target_supports_fork_events() \
506 (the_target->supports_fork_events ? \
507 (*the_target->supports_fork_events) () : 0)
509 #define target_supports_vfork_events() \
510 (the_target->supports_vfork_events ? \
511 (*the_target->supports_vfork_events) () : 0)
513 #define target_supports_exec_events() \
514 (the_target->supports_exec_events ? \
515 (*the_target->supports_exec_events) () : 0)
517 #define target_handle_new_gdb_connection() \
520 if (the_target->handle_new_gdb_connection != NULL) \
521 (*the_target->handle_new_gdb_connection) (); \
524 #define detach_inferior(proc) \
525 the_target->pt->detach (proc)
527 #define mythread_alive(pid) \
528 the_target->pt->thread_alive (pid)
530 #define fetch_inferior_registers(regcache, regno) \
531 the_target->pt->fetch_registers (regcache, regno)
533 #define store_inferior_registers(regcache, regno) \
534 the_target->pt->store_registers (regcache, regno)
536 #define join_inferior(pid) \
537 the_target->pt->join (pid)
539 #define target_supports_non_stop() \
540 (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
542 #define target_async(enable) \
543 (the_target->async ? (*the_target->async) (enable) : 0)
545 #define target_process_qsupported(features, count) \
548 if (the_target->process_qsupported) \
549 the_target->process_qsupported (features, count); \
552 #define target_supports_catch_syscall() \
553 (the_target->supports_catch_syscall ? \
554 (*the_target->supports_catch_syscall) () : 0)
556 #define target_get_ipa_tdesc_idx() \
557 (the_target->get_ipa_tdesc_idx \
558 ? (*the_target->get_ipa_tdesc_idx) () : 0)
560 #define target_supports_tracepoints() \
561 (the_target->supports_tracepoints \
562 ? (*the_target->supports_tracepoints) () : 0)
564 #define target_supports_fast_tracepoints() \
565 (the_target->install_fast_tracepoint_jump_pad != NULL)
567 #define target_get_min_fast_tracepoint_insn_len() \
568 (the_target->get_min_fast_tracepoint_insn_len \
569 ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
571 #define thread_stopped(thread) \
572 (*the_target->thread_stopped) (thread)
574 #define pause_all(freeze) \
577 if (the_target->pause_all) \
578 (*the_target->pause_all) (freeze); \
581 #define unpause_all(unfreeze) \
584 if (the_target->unpause_all) \
585 (*the_target->unpause_all) (unfreeze); \
588 #define stabilize_threads() \
591 if (the_target->stabilize_threads) \
592 (*the_target->stabilize_threads) (); \
595 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
596 collector, lockaddr, \
599 trampoline, trampoline_size, \
601 jjump_pad_insn_size, \
602 adjusted_insn_addr, \
603 adjusted_insn_addr_end, \
605 (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
606 collector,lockaddr, \
607 orig_size, jump_entry, \
611 jjump_pad_insn_size, \
612 adjusted_insn_addr, \
613 adjusted_insn_addr_end, \
616 #define target_emit_ops() \
617 (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
619 #define target_supports_disable_randomization() \
620 (the_target->supports_disable_randomization ? \
621 (*the_target->supports_disable_randomization) () : 0)
623 #define target_supports_agent() \
624 (the_target->supports_agent ? \
625 (*the_target->supports_agent) () : 0)
627 static inline struct btrace_target_info
*
628 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
630 if (the_target
->enable_btrace
== nullptr)
631 error (_("Target does not support branch tracing."));
633 return (*the_target
->enable_btrace
) (ptid
, conf
);
637 target_disable_btrace (struct btrace_target_info
*tinfo
)
639 if (the_target
->disable_btrace
== nullptr)
640 error (_("Target does not support branch tracing."));
642 return (*the_target
->disable_btrace
) (tinfo
);
646 target_read_btrace (struct btrace_target_info
*tinfo
,
647 struct buffer
*buffer
,
648 enum btrace_read_type type
)
650 if (the_target
->read_btrace
== nullptr)
651 error (_("Target does not support branch tracing."));
653 return (*the_target
->read_btrace
) (tinfo
, buffer
, type
);
657 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
658 struct buffer
*buffer
)
660 if (the_target
->read_btrace_conf
== nullptr)
661 error (_("Target does not support branch tracing."));
663 return (*the_target
->read_btrace_conf
) (tinfo
, buffer
);
666 #define target_supports_range_stepping() \
667 (the_target->supports_range_stepping ? \
668 (*the_target->supports_range_stepping) () : 0)
670 #define target_supports_stopped_by_sw_breakpoint() \
671 the_target->pt->supports_stopped_by_sw_breakpoint ()
673 #define target_stopped_by_sw_breakpoint() \
674 the_target->pt->stopped_by_sw_breakpoint ()
676 #define target_supports_stopped_by_hw_breakpoint() \
677 the_target->pt->supports_stopped_by_hw_breakpoint ()
679 #define target_supports_hardware_single_step() \
680 the_target->pt->supports_hardware_single_step ()
682 #define target_stopped_by_hw_breakpoint() \
683 the_target->pt->stopped_by_hw_breakpoint ()
685 #define target_breakpoint_kind_from_pc(pcptr) \
686 (the_target->breakpoint_kind_from_pc \
687 ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
688 : default_breakpoint_kind_from_pc (pcptr))
690 #define target_breakpoint_kind_from_current_state(pcptr) \
691 (the_target->breakpoint_kind_from_current_state \
692 ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
693 : target_breakpoint_kind_from_pc (pcptr))
695 #define target_supports_software_single_step() \
696 (the_target->supports_software_single_step ? \
697 (*the_target->supports_software_single_step) () : 0)
699 /* Start non-stop mode, returns 0 on success, -1 on failure. */
701 int start_non_stop (int nonstop
);
703 ptid_t
mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
706 /* Prepare to read or write memory from the inferior process. See the
707 corresponding process_stratum_target methods for more details. */
709 int prepare_to_access_memory (void);
710 void done_accessing_memory (void);
712 #define target_core_of_thread(ptid) \
713 (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
716 #define target_thread_name(ptid) \
717 (the_target->thread_name ? (*the_target->thread_name) (ptid) \
720 #define target_thread_handle(ptid, handle, handle_len) \
721 (the_target->thread_handle ? (*the_target->thread_handle) \
722 (ptid, handle, handle_len) \
725 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
727 int set_desired_thread ();
729 const char *target_pid_to_str (ptid_t
);
731 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
733 #endif /* GDBSERVER_TARGET_H */