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 /* Prepare to read or write memory from the inferior process.
74 Targets use this to do what is necessary to get the state of the
75 inferior such that it is possible to access memory.
77 This should generally only be called from client facing routines,
78 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
81 Like `read_memory' and `write_memory' below, returns 0 on success
82 and errno on failure. */
84 int (*prepare_to_access_memory
) (void);
86 /* Undo the effects of prepare_to_access_memory. */
88 void (*done_accessing_memory
) (void);
90 /* Read memory from the inferior process. This should generally be
91 called through read_inferior_memory, which handles breakpoint shadowing.
93 Read LEN bytes at MEMADDR into a buffer at MYADDR.
95 Returns 0 on success and errno on failure. */
97 int (*read_memory
) (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
99 /* Write memory to the inferior process. This should generally be
100 called through target_write_memory, which handles breakpoint shadowing.
102 Write LEN bytes from the buffer at MYADDR to MEMADDR.
104 Returns 0 on success and errno on failure. */
106 int (*write_memory
) (CORE_ADDR memaddr
, const unsigned char *myaddr
,
109 /* Query GDB for the values of any symbols we're interested in.
110 This function is called whenever we receive a "qSymbols::"
111 query, which corresponds to every time more symbols (might)
112 become available. NULL if we aren't interested in any
115 void (*look_up_symbols
) (void);
117 /* Send an interrupt request to the inferior process,
118 however is appropriate. */
120 void (*request_interrupt
) (void);
122 /* Read auxiliary vector data from the inferior process.
124 Read LEN bytes at OFFSET into a buffer at MYADDR. */
126 int (*read_auxv
) (CORE_ADDR offset
, unsigned char *myaddr
,
129 /* Returns true if GDB Z breakpoint type TYPE is supported, false
130 otherwise. The type is coded as follows:
131 '0' - software-breakpoint
132 '1' - hardware-breakpoint
133 '2' - write watchpoint
134 '3' - read watchpoint
135 '4' - access watchpoint
137 int (*supports_z_point_type
) (char z_type
);
139 /* Insert and remove a break or watchpoint.
140 Returns 0 on success, -1 on failure and 1 on unsupported. */
142 int (*insert_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
143 int size
, struct raw_breakpoint
*bp
);
144 int (*remove_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
145 int size
, struct raw_breakpoint
*bp
);
147 /* Returns 1 if the target stopped because it executed a software
148 breakpoint instruction, 0 otherwise. */
149 int (*stopped_by_sw_breakpoint
) (void);
151 /* Returns true if the target knows whether a trap was caused by a
152 SW breakpoint triggering. */
153 int (*supports_stopped_by_sw_breakpoint
) (void);
155 /* Returns 1 if the target stopped for a hardware breakpoint. */
156 int (*stopped_by_hw_breakpoint
) (void);
158 /* Returns true if the target knows whether a trap was caused by a
159 HW breakpoint triggering. */
160 int (*supports_stopped_by_hw_breakpoint
) (void);
162 /* Returns true if the target can do hardware single step. */
163 int (*supports_hardware_single_step
) (void);
165 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
167 int (*stopped_by_watchpoint
) (void);
169 /* Returns the address associated with the watchpoint that hit, if any;
170 returns 0 otherwise. */
172 CORE_ADDR (*stopped_data_address
) (void);
174 /* Reports the text, data offsets of the executable. This is
175 needed for uclinux where the executable is relocated during load
178 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
180 /* Fetch the address associated with a specific thread local storage
181 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
182 Stores it in *ADDRESS and returns zero on success; otherwise returns
183 an error code. A return value of -1 means this system does not
184 support the operation. */
186 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
187 CORE_ADDR load_module
, CORE_ADDR
*address
);
189 /* Fill BUF with an hostio error packet representing the last hostio
191 void (*hostio_last_error
) (char *buf
);
193 /* Read/Write OS data using qXfer packets. */
194 int (*qxfer_osdata
) (const char *annex
, unsigned char *readbuf
,
195 unsigned const char *writebuf
, CORE_ADDR offset
,
198 /* Read/Write extra signal info. */
199 int (*qxfer_siginfo
) (const char *annex
, unsigned char *readbuf
,
200 unsigned const char *writebuf
,
201 CORE_ADDR offset
, int len
);
203 int (*supports_non_stop
) (void);
205 /* Enables async target events. Returns the previous enable
207 int (*async
) (int enable
);
209 /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
210 success, -1 otherwise. */
211 int (*start_non_stop
) (int);
213 /* Returns true if the target supports multi-process debugging. */
214 int (*supports_multi_process
) (void);
216 /* Returns true if fork events are supported. */
217 int (*supports_fork_events
) (void);
219 /* Returns true if vfork events are supported. */
220 int (*supports_vfork_events
) (void);
222 /* Returns true if exec events are supported. */
223 int (*supports_exec_events
) (void);
225 /* Allows target to re-initialize connection-specific settings. */
226 void (*handle_new_gdb_connection
) (void);
228 /* If not NULL, target-specific routine to process monitor command.
229 Returns 1 if handled, or 0 to perform default processing. */
230 int (*handle_monitor_command
) (char *);
232 /* Returns the core given a thread, or -1 if not known. */
233 int (*core_of_thread
) (ptid_t
);
235 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
236 int (*read_loadmap
) (const char *annex
, CORE_ADDR offset
,
237 unsigned char *myaddr
, unsigned int len
);
239 /* Target specific qSupported support. FEATURES is an array of
240 features with COUNT elements. */
241 void (*process_qsupported
) (char **features
, int count
);
243 /* Return 1 if the target supports tracepoints, 0 (or leave the
244 callback NULL) otherwise. */
245 int (*supports_tracepoints
) (void);
247 /* Read PC from REGCACHE. */
248 CORE_ADDR (*read_pc
) (struct regcache
*regcache
);
250 /* Write PC to REGCACHE. */
251 void (*write_pc
) (struct regcache
*regcache
, CORE_ADDR pc
);
253 /* Return true if THREAD is known to be stopped now. */
254 int (*thread_stopped
) (struct thread_info
*thread
);
256 /* Read Thread Information Block address. */
257 int (*get_tib_address
) (ptid_t ptid
, CORE_ADDR
*address
);
259 /* Pause all threads. If FREEZE, arrange for any resume attempt to
260 be ignored until an unpause_all call unfreezes threads again.
261 There can be nested calls to pause_all, so a freeze counter
262 should be maintained. */
263 void (*pause_all
) (int freeze
);
265 /* Unpause all threads. Threads that hadn't been resumed by the
266 client should be left stopped. Basically a pause/unpause call
267 pair should not end up resuming threads that were stopped before
269 void (*unpause_all
) (int unfreeze
);
271 /* Stabilize all threads. That is, force them out of jump pads. */
272 void (*stabilize_threads
) (void);
274 /* Install a fast tracepoint jump pad. TPOINT is the address of the
275 tracepoint internal object as used by the IPA agent. TPADDR is
276 the address of tracepoint. COLLECTOR is address of the function
277 the jump pad redirects to. LOCKADDR is the address of the jump
278 pad lock object. ORIG_SIZE is the size in bytes of the
279 instruction at TPADDR. JUMP_ENTRY points to the address of the
280 jump pad entry, and on return holds the address past the end of
281 the created jump pad. If a trampoline is created by the function,
282 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
283 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
284 buffer containing a copy of the instruction at TPADDR.
285 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
286 return the address range where the instruction at TPADDR was relocated
287 to. If an error occurs, the ERR may be used to pass on an error
289 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
293 CORE_ADDR
*jump_entry
,
294 CORE_ADDR
*trampoline
,
295 ULONGEST
*trampoline_size
,
296 unsigned char *jjump_pad_insn
,
297 ULONGEST
*jjump_pad_insn_size
,
298 CORE_ADDR
*adjusted_insn_addr
,
299 CORE_ADDR
*adjusted_insn_addr_end
,
302 /* Return the bytecode operations vector for the current inferior.
303 Returns NULL if bytecode compilation is not supported. */
304 struct emit_ops
*(*emit_ops
) (void);
306 /* Returns true if the target supports disabling randomization. */
307 int (*supports_disable_randomization
) (void);
309 /* Return the minimum length of an instruction that can be safely overwritten
310 for use as a fast tracepoint. */
311 int (*get_min_fast_tracepoint_insn_len
) (void);
313 /* Read solib info on SVR4 platforms. */
314 int (*qxfer_libraries_svr4
) (const char *annex
, unsigned char *readbuf
,
315 unsigned const char *writebuf
,
316 CORE_ADDR offset
, int len
);
318 /* Return true if target supports debugging agent. */
319 int (*supports_agent
) (void);
321 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
322 target information struct for reading and for disabling branch trace. */
323 struct btrace_target_info
*(*enable_btrace
)
324 (ptid_t ptid
, const struct btrace_config
*conf
);
326 /* Disable branch tracing.
327 Returns zero on success, non-zero otherwise. */
328 int (*disable_btrace
) (struct btrace_target_info
*tinfo
);
330 /* Read branch trace data into buffer.
331 Return 0 on success; print an error message into BUFFER and return -1,
333 int (*read_btrace
) (struct btrace_target_info
*, struct buffer
*,
334 enum btrace_read_type type
);
336 /* Read the branch trace configuration into BUFFER.
337 Return 0 on success; print an error message into BUFFER and return -1
339 int (*read_btrace_conf
) (const struct btrace_target_info
*, struct buffer
*);
341 /* Return true if target supports range stepping. */
342 int (*supports_range_stepping
) (void);
344 /* Return the full absolute name of the executable file that was
345 run to create the process PID. If the executable file cannot
346 be determined, NULL is returned. Otherwise, a pointer to a
347 character string containing the pathname is returned. This
348 string should be copied into a buffer by the client if the string
349 will not be immediately used, or if it must persist. */
350 char *(*pid_to_exec_file
) (int pid
);
352 /* Multiple-filesystem-aware open. Like open(2), but operating in
353 the filesystem as it appears to process PID. Systems where all
354 processes share a common filesystem should set this to NULL.
355 If NULL, the caller should fall back to open(2). */
356 int (*multifs_open
) (int pid
, const char *filename
,
357 int flags
, mode_t mode
);
359 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
360 in the filesystem as it appears to process PID. Systems where
361 all processes share a common filesystem should set this to NULL.
362 If NULL, the caller should fall back to unlink(2). */
363 int (*multifs_unlink
) (int pid
, const char *filename
);
365 /* Multiple-filesystem-aware readlink. Like readlink(2), but
366 operating in the filesystem as it appears to process PID.
367 Systems where all processes share a common filesystem should
368 set this to NULL. If NULL, the caller should fall back to
370 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
371 char *buf
, size_t bufsiz
);
373 /* Return the breakpoint kind for this target based on PC. The PCPTR is
374 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
375 ARM) was present in the PC. */
376 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
378 /* Return the software breakpoint from KIND. KIND can have target
379 specific meaning like the Z0 kind parameter.
380 SIZE is set to the software breakpoint's length in memory. */
381 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
383 /* Return the thread's name, or NULL if the target is unable to determine it.
384 The returned value must not be freed by the caller. */
385 const char *(*thread_name
) (ptid_t thread
);
387 /* Return the breakpoint kind for this target based on the current
388 processor state (e.g. the current instruction mode on ARM) and the
389 PC. The PCPTR is adjusted to the real memory location in case a flag
390 (e.g., the Thumb bit on ARM) is present in the PC. */
391 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
393 /* Returns true if the target can software single step. */
394 int (*supports_software_single_step
) (void);
396 /* Return 1 if the target supports catch syscall, 0 (or leave the
397 callback NULL) otherwise. */
398 int (*supports_catch_syscall
) (void);
400 /* Return tdesc index for IPA. */
401 int (*get_ipa_tdesc_idx
) (void);
403 /* Thread ID to (numeric) thread handle: Return true on success and
404 false for failure. Return pointer to thread handle via HANDLE
405 and the handle's length via HANDLE_LEN. */
406 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
408 /* The object that will gradually replace this struct. */
416 virtual ~process_target () = default;
418 /* Start a new process.
420 PROGRAM is a path to the program to execute.
421 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
422 to be passed to the inferior as ``argv'' (along with PROGRAM).
424 Returns the new PID on success, -1 on failure. Registers the new
425 process with the process list. */
426 virtual int create_inferior (const char *program
,
427 const std::vector
<char *> &program_args
) = 0;
429 /* Do additional setup after a new process is created, including
430 exec-wrapper completion. */
431 virtual void post_create_inferior ();
433 /* Attach to a running process.
435 PID is the process ID to attach to, specified by the user
438 Returns -1 if attaching is unsupported, 0 on success, and calls
439 error() otherwise. */
440 virtual int attach (unsigned long pid
) = 0;
442 /* Kill process PROC. Return -1 on failure, and 0 on success. */
443 virtual int kill (process_info
*proc
) = 0;
445 /* Detach from process PROC. Return -1 on failure, and 0 on
447 virtual int detach (process_info
*proc
) = 0;
449 /* The inferior process has died. Do what is right. */
450 virtual void mourn (process_info
*proc
) = 0;
452 /* Wait for process PID to exit. */
453 virtual void join (int pid
) = 0;
455 /* Return true iff the thread with process ID PID is alive. */
456 virtual bool thread_alive (ptid_t pid
) = 0;
458 /* Resume the inferior process. */
459 virtual void resume (thread_resume
*resume_info
, size_t n
) = 0;
461 /* Wait for the inferior process or thread to change state. Store
462 status through argument pointer STATUS.
464 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
465 wait for any thread of process pid to do something. Return ptid
466 of child, or -1 in case of error; store status through argument
467 pointer STATUS. OPTIONS is a bit set of options defined as
468 TARGET_W* above. If options contains TARGET_WNOHANG and there's
469 no child stop to report, return is
470 null_ptid/TARGET_WAITKIND_IGNORE. */
471 virtual ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
474 /* Fetch registers from the inferior process.
476 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
477 virtual void fetch_registers (regcache
*regcache
, int regno
) = 0;
479 /* Store registers to the inferior process.
481 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
482 virtual void store_registers (regcache
*regcache
, int regno
) = 0;
485 extern process_stratum_target
*the_target
;
487 void set_target_ops (process_stratum_target
*);
489 #define target_create_inferior(program, program_args) \
490 the_target->pt->create_inferior (program, program_args)
492 #define target_post_create_inferior() \
493 the_target->pt->post_create_inferior ()
495 #define myattach(pid) \
496 the_target->pt->attach (pid)
498 int kill_inferior (process_info
*proc
);
500 #define target_supports_fork_events() \
501 (the_target->supports_fork_events ? \
502 (*the_target->supports_fork_events) () : 0)
504 #define target_supports_vfork_events() \
505 (the_target->supports_vfork_events ? \
506 (*the_target->supports_vfork_events) () : 0)
508 #define target_supports_exec_events() \
509 (the_target->supports_exec_events ? \
510 (*the_target->supports_exec_events) () : 0)
512 #define target_handle_new_gdb_connection() \
515 if (the_target->handle_new_gdb_connection != NULL) \
516 (*the_target->handle_new_gdb_connection) (); \
519 #define detach_inferior(proc) \
520 the_target->pt->detach (proc)
522 #define mythread_alive(pid) \
523 the_target->pt->thread_alive (pid)
525 #define fetch_inferior_registers(regcache, regno) \
526 the_target->pt->fetch_registers (regcache, regno)
528 #define store_inferior_registers(regcache, regno) \
529 the_target->pt->store_registers (regcache, regno)
531 #define join_inferior(pid) \
532 the_target->pt->join (pid)
534 #define target_supports_non_stop() \
535 (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
537 #define target_async(enable) \
538 (the_target->async ? (*the_target->async) (enable) : 0)
540 #define target_process_qsupported(features, count) \
543 if (the_target->process_qsupported) \
544 the_target->process_qsupported (features, count); \
547 #define target_supports_catch_syscall() \
548 (the_target->supports_catch_syscall ? \
549 (*the_target->supports_catch_syscall) () : 0)
551 #define target_get_ipa_tdesc_idx() \
552 (the_target->get_ipa_tdesc_idx \
553 ? (*the_target->get_ipa_tdesc_idx) () : 0)
555 #define target_supports_tracepoints() \
556 (the_target->supports_tracepoints \
557 ? (*the_target->supports_tracepoints) () : 0)
559 #define target_supports_fast_tracepoints() \
560 (the_target->install_fast_tracepoint_jump_pad != NULL)
562 #define target_get_min_fast_tracepoint_insn_len() \
563 (the_target->get_min_fast_tracepoint_insn_len \
564 ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
566 #define thread_stopped(thread) \
567 (*the_target->thread_stopped) (thread)
569 #define pause_all(freeze) \
572 if (the_target->pause_all) \
573 (*the_target->pause_all) (freeze); \
576 #define unpause_all(unfreeze) \
579 if (the_target->unpause_all) \
580 (*the_target->unpause_all) (unfreeze); \
583 #define stabilize_threads() \
586 if (the_target->stabilize_threads) \
587 (*the_target->stabilize_threads) (); \
590 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
591 collector, lockaddr, \
594 trampoline, trampoline_size, \
596 jjump_pad_insn_size, \
597 adjusted_insn_addr, \
598 adjusted_insn_addr_end, \
600 (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
601 collector,lockaddr, \
602 orig_size, jump_entry, \
606 jjump_pad_insn_size, \
607 adjusted_insn_addr, \
608 adjusted_insn_addr_end, \
611 #define target_emit_ops() \
612 (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
614 #define target_supports_disable_randomization() \
615 (the_target->supports_disable_randomization ? \
616 (*the_target->supports_disable_randomization) () : 0)
618 #define target_supports_agent() \
619 (the_target->supports_agent ? \
620 (*the_target->supports_agent) () : 0)
622 static inline struct btrace_target_info
*
623 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
625 if (the_target
->enable_btrace
== nullptr)
626 error (_("Target does not support branch tracing."));
628 return (*the_target
->enable_btrace
) (ptid
, conf
);
632 target_disable_btrace (struct btrace_target_info
*tinfo
)
634 if (the_target
->disable_btrace
== nullptr)
635 error (_("Target does not support branch tracing."));
637 return (*the_target
->disable_btrace
) (tinfo
);
641 target_read_btrace (struct btrace_target_info
*tinfo
,
642 struct buffer
*buffer
,
643 enum btrace_read_type type
)
645 if (the_target
->read_btrace
== nullptr)
646 error (_("Target does not support branch tracing."));
648 return (*the_target
->read_btrace
) (tinfo
, buffer
, type
);
652 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
653 struct buffer
*buffer
)
655 if (the_target
->read_btrace_conf
== nullptr)
656 error (_("Target does not support branch tracing."));
658 return (*the_target
->read_btrace_conf
) (tinfo
, buffer
);
661 #define target_supports_range_stepping() \
662 (the_target->supports_range_stepping ? \
663 (*the_target->supports_range_stepping) () : 0)
665 #define target_supports_stopped_by_sw_breakpoint() \
666 (the_target->supports_stopped_by_sw_breakpoint ? \
667 (*the_target->supports_stopped_by_sw_breakpoint) () : 0)
669 #define target_stopped_by_sw_breakpoint() \
670 (the_target->stopped_by_sw_breakpoint ? \
671 (*the_target->stopped_by_sw_breakpoint) () : 0)
673 #define target_supports_stopped_by_hw_breakpoint() \
674 (the_target->supports_stopped_by_hw_breakpoint ? \
675 (*the_target->supports_stopped_by_hw_breakpoint) () : 0)
677 #define target_supports_hardware_single_step() \
678 (the_target->supports_hardware_single_step ? \
679 (*the_target->supports_hardware_single_step) () : 0)
681 #define target_stopped_by_hw_breakpoint() \
682 (the_target->stopped_by_hw_breakpoint ? \
683 (*the_target->stopped_by_hw_breakpoint) () : 0)
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 target_can_do_hardware_single_step (void);
733 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
735 #endif /* GDBSERVER_TARGET_H */