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 /* Insert and remove a break or watchpoint.
74 Returns 0 on success, -1 on failure and 1 on unsupported. */
76 int (*insert_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
77 int size
, struct raw_breakpoint
*bp
);
78 int (*remove_point
) (enum raw_bkpt_type type
, CORE_ADDR addr
,
79 int size
, struct raw_breakpoint
*bp
);
81 /* Returns 1 if the target stopped because it executed a software
82 breakpoint instruction, 0 otherwise. */
83 int (*stopped_by_sw_breakpoint
) (void);
85 /* Returns true if the target knows whether a trap was caused by a
86 SW breakpoint triggering. */
87 int (*supports_stopped_by_sw_breakpoint
) (void);
89 /* Returns 1 if the target stopped for a hardware breakpoint. */
90 int (*stopped_by_hw_breakpoint
) (void);
92 /* Returns true if the target knows whether a trap was caused by a
93 HW breakpoint triggering. */
94 int (*supports_stopped_by_hw_breakpoint
) (void);
96 /* Returns true if the target can do hardware single step. */
97 int (*supports_hardware_single_step
) (void);
99 /* Returns 1 if target was stopped due to a watchpoint hit, 0 otherwise. */
101 int (*stopped_by_watchpoint
) (void);
103 /* Returns the address associated with the watchpoint that hit, if any;
104 returns 0 otherwise. */
106 CORE_ADDR (*stopped_data_address
) (void);
108 /* Reports the text, data offsets of the executable. This is
109 needed for uclinux where the executable is relocated during load
112 int (*read_offsets
) (CORE_ADDR
*text
, CORE_ADDR
*data
);
114 /* Fetch the address associated with a specific thread local storage
115 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
116 Stores it in *ADDRESS and returns zero on success; otherwise returns
117 an error code. A return value of -1 means this system does not
118 support the operation. */
120 int (*get_tls_address
) (struct thread_info
*thread
, CORE_ADDR offset
,
121 CORE_ADDR load_module
, CORE_ADDR
*address
);
123 /* Fill BUF with an hostio error packet representing the last hostio
125 void (*hostio_last_error
) (char *buf
);
127 /* Read/Write OS data using qXfer packets. */
128 int (*qxfer_osdata
) (const char *annex
, unsigned char *readbuf
,
129 unsigned const char *writebuf
, CORE_ADDR offset
,
132 /* Read/Write extra signal info. */
133 int (*qxfer_siginfo
) (const char *annex
, unsigned char *readbuf
,
134 unsigned const char *writebuf
,
135 CORE_ADDR offset
, int len
);
137 int (*supports_non_stop
) (void);
139 /* Enables async target events. Returns the previous enable
141 int (*async
) (int enable
);
143 /* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
144 success, -1 otherwise. */
145 int (*start_non_stop
) (int);
147 /* Returns true if the target supports multi-process debugging. */
148 int (*supports_multi_process
) (void);
150 /* Returns true if fork events are supported. */
151 int (*supports_fork_events
) (void);
153 /* Returns true if vfork events are supported. */
154 int (*supports_vfork_events
) (void);
156 /* Returns true if exec events are supported. */
157 int (*supports_exec_events
) (void);
159 /* Allows target to re-initialize connection-specific settings. */
160 void (*handle_new_gdb_connection
) (void);
162 /* If not NULL, target-specific routine to process monitor command.
163 Returns 1 if handled, or 0 to perform default processing. */
164 int (*handle_monitor_command
) (char *);
166 /* Returns the core given a thread, or -1 if not known. */
167 int (*core_of_thread
) (ptid_t
);
169 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
170 int (*read_loadmap
) (const char *annex
, CORE_ADDR offset
,
171 unsigned char *myaddr
, unsigned int len
);
173 /* Target specific qSupported support. FEATURES is an array of
174 features with COUNT elements. */
175 void (*process_qsupported
) (char **features
, int count
);
177 /* Return 1 if the target supports tracepoints, 0 (or leave the
178 callback NULL) otherwise. */
179 int (*supports_tracepoints
) (void);
181 /* Read PC from REGCACHE. */
182 CORE_ADDR (*read_pc
) (struct regcache
*regcache
);
184 /* Write PC to REGCACHE. */
185 void (*write_pc
) (struct regcache
*regcache
, CORE_ADDR pc
);
187 /* Return true if THREAD is known to be stopped now. */
188 int (*thread_stopped
) (struct thread_info
*thread
);
190 /* Read Thread Information Block address. */
191 int (*get_tib_address
) (ptid_t ptid
, CORE_ADDR
*address
);
193 /* Pause all threads. If FREEZE, arrange for any resume attempt to
194 be ignored until an unpause_all call unfreezes threads again.
195 There can be nested calls to pause_all, so a freeze counter
196 should be maintained. */
197 void (*pause_all
) (int freeze
);
199 /* Unpause all threads. Threads that hadn't been resumed by the
200 client should be left stopped. Basically a pause/unpause call
201 pair should not end up resuming threads that were stopped before
203 void (*unpause_all
) (int unfreeze
);
205 /* Stabilize all threads. That is, force them out of jump pads. */
206 void (*stabilize_threads
) (void);
208 /* Install a fast tracepoint jump pad. TPOINT is the address of the
209 tracepoint internal object as used by the IPA agent. TPADDR is
210 the address of tracepoint. COLLECTOR is address of the function
211 the jump pad redirects to. LOCKADDR is the address of the jump
212 pad lock object. ORIG_SIZE is the size in bytes of the
213 instruction at TPADDR. JUMP_ENTRY points to the address of the
214 jump pad entry, and on return holds the address past the end of
215 the created jump pad. If a trampoline is created by the function,
216 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
217 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
218 buffer containing a copy of the instruction at TPADDR.
219 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
220 return the address range where the instruction at TPADDR was relocated
221 to. If an error occurs, the ERR may be used to pass on an error
223 int (*install_fast_tracepoint_jump_pad
) (CORE_ADDR tpoint
, CORE_ADDR tpaddr
,
227 CORE_ADDR
*jump_entry
,
228 CORE_ADDR
*trampoline
,
229 ULONGEST
*trampoline_size
,
230 unsigned char *jjump_pad_insn
,
231 ULONGEST
*jjump_pad_insn_size
,
232 CORE_ADDR
*adjusted_insn_addr
,
233 CORE_ADDR
*adjusted_insn_addr_end
,
236 /* Return the bytecode operations vector for the current inferior.
237 Returns NULL if bytecode compilation is not supported. */
238 struct emit_ops
*(*emit_ops
) (void);
240 /* Returns true if the target supports disabling randomization. */
241 int (*supports_disable_randomization
) (void);
243 /* Return the minimum length of an instruction that can be safely overwritten
244 for use as a fast tracepoint. */
245 int (*get_min_fast_tracepoint_insn_len
) (void);
247 /* Read solib info on SVR4 platforms. */
248 int (*qxfer_libraries_svr4
) (const char *annex
, unsigned char *readbuf
,
249 unsigned const char *writebuf
,
250 CORE_ADDR offset
, int len
);
252 /* Return true if target supports debugging agent. */
253 int (*supports_agent
) (void);
255 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
256 target information struct for reading and for disabling branch trace. */
257 struct btrace_target_info
*(*enable_btrace
)
258 (ptid_t ptid
, const struct btrace_config
*conf
);
260 /* Disable branch tracing.
261 Returns zero on success, non-zero otherwise. */
262 int (*disable_btrace
) (struct btrace_target_info
*tinfo
);
264 /* Read branch trace data into buffer.
265 Return 0 on success; print an error message into BUFFER and return -1,
267 int (*read_btrace
) (struct btrace_target_info
*, struct buffer
*,
268 enum btrace_read_type type
);
270 /* Read the branch trace configuration into BUFFER.
271 Return 0 on success; print an error message into BUFFER and return -1
273 int (*read_btrace_conf
) (const struct btrace_target_info
*, struct buffer
*);
275 /* Return true if target supports range stepping. */
276 int (*supports_range_stepping
) (void);
278 /* Return the full absolute name of the executable file that was
279 run to create the process PID. If the executable file cannot
280 be determined, NULL is returned. Otherwise, a pointer to a
281 character string containing the pathname is returned. This
282 string should be copied into a buffer by the client if the string
283 will not be immediately used, or if it must persist. */
284 char *(*pid_to_exec_file
) (int pid
);
286 /* Multiple-filesystem-aware open. Like open(2), but operating in
287 the filesystem as it appears to process PID. Systems where all
288 processes share a common filesystem should set this to NULL.
289 If NULL, the caller should fall back to open(2). */
290 int (*multifs_open
) (int pid
, const char *filename
,
291 int flags
, mode_t mode
);
293 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
294 in the filesystem as it appears to process PID. Systems where
295 all processes share a common filesystem should set this to NULL.
296 If NULL, the caller should fall back to unlink(2). */
297 int (*multifs_unlink
) (int pid
, const char *filename
);
299 /* Multiple-filesystem-aware readlink. Like readlink(2), but
300 operating in the filesystem as it appears to process PID.
301 Systems where all processes share a common filesystem should
302 set this to NULL. If NULL, the caller should fall back to
304 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
305 char *buf
, size_t bufsiz
);
307 /* Return the breakpoint kind for this target based on PC. The PCPTR is
308 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
309 ARM) was present in the PC. */
310 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
312 /* Return the software breakpoint from KIND. KIND can have target
313 specific meaning like the Z0 kind parameter.
314 SIZE is set to the software breakpoint's length in memory. */
315 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
317 /* Return the thread's name, or NULL if the target is unable to determine it.
318 The returned value must not be freed by the caller. */
319 const char *(*thread_name
) (ptid_t thread
);
321 /* Return the breakpoint kind for this target based on the current
322 processor state (e.g. the current instruction mode on ARM) and the
323 PC. The PCPTR is adjusted to the real memory location in case a flag
324 (e.g., the Thumb bit on ARM) is present in the PC. */
325 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
327 /* Returns true if the target can software single step. */
328 int (*supports_software_single_step
) (void);
330 /* Return 1 if the target supports catch syscall, 0 (or leave the
331 callback NULL) otherwise. */
332 int (*supports_catch_syscall
) (void);
334 /* Return tdesc index for IPA. */
335 int (*get_ipa_tdesc_idx
) (void);
337 /* Thread ID to (numeric) thread handle: Return true on success and
338 false for failure. Return pointer to thread handle via HANDLE
339 and the handle's length via HANDLE_LEN. */
340 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
342 /* The object that will gradually replace this struct. */
350 virtual ~process_target () = default;
352 /* Start a new process.
354 PROGRAM is a path to the program to execute.
355 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
356 to be passed to the inferior as ``argv'' (along with PROGRAM).
358 Returns the new PID on success, -1 on failure. Registers the new
359 process with the process list. */
360 virtual int create_inferior (const char *program
,
361 const std::vector
<char *> &program_args
) = 0;
363 /* Do additional setup after a new process is created, including
364 exec-wrapper completion. */
365 virtual void post_create_inferior ();
367 /* Attach to a running process.
369 PID is the process ID to attach to, specified by the user
372 Returns -1 if attaching is unsupported, 0 on success, and calls
373 error() otherwise. */
374 virtual int attach (unsigned long pid
) = 0;
376 /* Kill process PROC. Return -1 on failure, and 0 on success. */
377 virtual int kill (process_info
*proc
) = 0;
379 /* Detach from process PROC. Return -1 on failure, and 0 on
381 virtual int detach (process_info
*proc
) = 0;
383 /* The inferior process has died. Do what is right. */
384 virtual void mourn (process_info
*proc
) = 0;
386 /* Wait for process PID to exit. */
387 virtual void join (int pid
) = 0;
389 /* Return true iff the thread with process ID PID is alive. */
390 virtual bool thread_alive (ptid_t pid
) = 0;
392 /* Resume the inferior process. */
393 virtual void resume (thread_resume
*resume_info
, size_t n
) = 0;
395 /* Wait for the inferior process or thread to change state. Store
396 status through argument pointer STATUS.
398 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
399 wait for any thread of process pid to do something. Return ptid
400 of child, or -1 in case of error; store status through argument
401 pointer STATUS. OPTIONS is a bit set of options defined as
402 TARGET_W* above. If options contains TARGET_WNOHANG and there's
403 no child stop to report, return is
404 null_ptid/TARGET_WAITKIND_IGNORE. */
405 virtual ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
408 /* Fetch registers from the inferior process.
410 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
411 virtual void fetch_registers (regcache
*regcache
, int regno
) = 0;
413 /* Store registers to the inferior process.
415 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
416 virtual void store_registers (regcache
*regcache
, int regno
) = 0;
418 /* Prepare to read or write memory from the inferior process.
419 Targets use this to do what is necessary to get the state of the
420 inferior such that it is possible to access memory.
422 This should generally only be called from client facing routines,
423 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
426 Like `read_memory' and `write_memory' below, returns 0 on success
427 and errno on failure. */
428 virtual int prepare_to_access_memory ();
430 /* Undo the effects of prepare_to_access_memory. */
431 virtual void done_accessing_memory ();
433 /* Read memory from the inferior process. This should generally be
434 called through read_inferior_memory, which handles breakpoint shadowing.
436 Read LEN bytes at MEMADDR into a buffer at MYADDR.
438 Returns 0 on success and errno on failure. */
439 virtual int read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
442 /* Write memory to the inferior process. This should generally be
443 called through target_write_memory, which handles breakpoint shadowing.
445 Write LEN bytes from the buffer at MYADDR to MEMADDR.
447 Returns 0 on success and errno on failure. */
448 virtual int write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
451 /* Query GDB for the values of any symbols we're interested in.
452 This function is called whenever we receive a "qSymbols::"
453 query, which corresponds to every time more symbols (might)
455 virtual void look_up_symbols ();
457 /* Send an interrupt request to the inferior process,
458 however is appropriate. */
459 virtual void request_interrupt () = 0;
461 /* Return true if the read_auxv target op is supported. */
462 virtual bool supports_read_auxv ();
464 /* Read auxiliary vector data from the inferior process.
466 Read LEN bytes at OFFSET into a buffer at MYADDR. */
467 virtual int read_auxv (CORE_ADDR offset
, unsigned char *myaddr
,
470 /* Returns true if GDB Z breakpoint type TYPE is supported, false
471 otherwise. The type is coded as follows:
472 '0' - software-breakpoint
473 '1' - hardware-breakpoint
474 '2' - write watchpoint
475 '3' - read watchpoint
476 '4' - access watchpoint
478 virtual bool supports_z_point_type (char z_type
);
481 extern process_stratum_target
*the_target
;
483 void set_target_ops (process_stratum_target
*);
485 #define target_create_inferior(program, program_args) \
486 the_target->pt->create_inferior (program, program_args)
488 #define target_post_create_inferior() \
489 the_target->pt->post_create_inferior ()
491 #define myattach(pid) \
492 the_target->pt->attach (pid)
494 int kill_inferior (process_info
*proc
);
496 #define target_supports_fork_events() \
497 (the_target->supports_fork_events ? \
498 (*the_target->supports_fork_events) () : 0)
500 #define target_supports_vfork_events() \
501 (the_target->supports_vfork_events ? \
502 (*the_target->supports_vfork_events) () : 0)
504 #define target_supports_exec_events() \
505 (the_target->supports_exec_events ? \
506 (*the_target->supports_exec_events) () : 0)
508 #define target_handle_new_gdb_connection() \
511 if (the_target->handle_new_gdb_connection != NULL) \
512 (*the_target->handle_new_gdb_connection) (); \
515 #define detach_inferior(proc) \
516 the_target->pt->detach (proc)
518 #define mythread_alive(pid) \
519 the_target->pt->thread_alive (pid)
521 #define fetch_inferior_registers(regcache, regno) \
522 the_target->pt->fetch_registers (regcache, regno)
524 #define store_inferior_registers(regcache, regno) \
525 the_target->pt->store_registers (regcache, regno)
527 #define join_inferior(pid) \
528 the_target->pt->join (pid)
530 #define target_supports_non_stop() \
531 (the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
533 #define target_async(enable) \
534 (the_target->async ? (*the_target->async) (enable) : 0)
536 #define target_process_qsupported(features, count) \
539 if (the_target->process_qsupported) \
540 the_target->process_qsupported (features, count); \
543 #define target_supports_catch_syscall() \
544 (the_target->supports_catch_syscall ? \
545 (*the_target->supports_catch_syscall) () : 0)
547 #define target_get_ipa_tdesc_idx() \
548 (the_target->get_ipa_tdesc_idx \
549 ? (*the_target->get_ipa_tdesc_idx) () : 0)
551 #define target_supports_tracepoints() \
552 (the_target->supports_tracepoints \
553 ? (*the_target->supports_tracepoints) () : 0)
555 #define target_supports_fast_tracepoints() \
556 (the_target->install_fast_tracepoint_jump_pad != NULL)
558 #define target_get_min_fast_tracepoint_insn_len() \
559 (the_target->get_min_fast_tracepoint_insn_len \
560 ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
562 #define thread_stopped(thread) \
563 (*the_target->thread_stopped) (thread)
565 #define pause_all(freeze) \
568 if (the_target->pause_all) \
569 (*the_target->pause_all) (freeze); \
572 #define unpause_all(unfreeze) \
575 if (the_target->unpause_all) \
576 (*the_target->unpause_all) (unfreeze); \
579 #define stabilize_threads() \
582 if (the_target->stabilize_threads) \
583 (*the_target->stabilize_threads) (); \
586 #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
587 collector, lockaddr, \
590 trampoline, trampoline_size, \
592 jjump_pad_insn_size, \
593 adjusted_insn_addr, \
594 adjusted_insn_addr_end, \
596 (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
597 collector,lockaddr, \
598 orig_size, jump_entry, \
602 jjump_pad_insn_size, \
603 adjusted_insn_addr, \
604 adjusted_insn_addr_end, \
607 #define target_emit_ops() \
608 (the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
610 #define target_supports_disable_randomization() \
611 (the_target->supports_disable_randomization ? \
612 (*the_target->supports_disable_randomization) () : 0)
614 #define target_supports_agent() \
615 (the_target->supports_agent ? \
616 (*the_target->supports_agent) () : 0)
618 static inline struct btrace_target_info
*
619 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
621 if (the_target
->enable_btrace
== nullptr)
622 error (_("Target does not support branch tracing."));
624 return (*the_target
->enable_btrace
) (ptid
, conf
);
628 target_disable_btrace (struct btrace_target_info
*tinfo
)
630 if (the_target
->disable_btrace
== nullptr)
631 error (_("Target does not support branch tracing."));
633 return (*the_target
->disable_btrace
) (tinfo
);
637 target_read_btrace (struct btrace_target_info
*tinfo
,
638 struct buffer
*buffer
,
639 enum btrace_read_type type
)
641 if (the_target
->read_btrace
== nullptr)
642 error (_("Target does not support branch tracing."));
644 return (*the_target
->read_btrace
) (tinfo
, buffer
, type
);
648 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
649 struct buffer
*buffer
)
651 if (the_target
->read_btrace_conf
== nullptr)
652 error (_("Target does not support branch tracing."));
654 return (*the_target
->read_btrace_conf
) (tinfo
, buffer
);
657 #define target_supports_range_stepping() \
658 (the_target->supports_range_stepping ? \
659 (*the_target->supports_range_stepping) () : 0)
661 #define target_supports_stopped_by_sw_breakpoint() \
662 (the_target->supports_stopped_by_sw_breakpoint ? \
663 (*the_target->supports_stopped_by_sw_breakpoint) () : 0)
665 #define target_stopped_by_sw_breakpoint() \
666 (the_target->stopped_by_sw_breakpoint ? \
667 (*the_target->stopped_by_sw_breakpoint) () : 0)
669 #define target_supports_stopped_by_hw_breakpoint() \
670 (the_target->supports_stopped_by_hw_breakpoint ? \
671 (*the_target->supports_stopped_by_hw_breakpoint) () : 0)
673 #define target_supports_hardware_single_step() \
674 (the_target->supports_hardware_single_step ? \
675 (*the_target->supports_hardware_single_step) () : 0)
677 #define target_stopped_by_hw_breakpoint() \
678 (the_target->stopped_by_hw_breakpoint ? \
679 (*the_target->stopped_by_hw_breakpoint) () : 0)
681 #define target_breakpoint_kind_from_pc(pcptr) \
682 (the_target->breakpoint_kind_from_pc \
683 ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
684 : default_breakpoint_kind_from_pc (pcptr))
686 #define target_breakpoint_kind_from_current_state(pcptr) \
687 (the_target->breakpoint_kind_from_current_state \
688 ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
689 : target_breakpoint_kind_from_pc (pcptr))
691 #define target_supports_software_single_step() \
692 (the_target->supports_software_single_step ? \
693 (*the_target->supports_software_single_step) () : 0)
695 /* Start non-stop mode, returns 0 on success, -1 on failure. */
697 int start_non_stop (int nonstop
);
699 ptid_t
mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
702 /* Prepare to read or write memory from the inferior process. See the
703 corresponding process_stratum_target methods for more details. */
705 int prepare_to_access_memory (void);
706 void done_accessing_memory (void);
708 #define target_core_of_thread(ptid) \
709 (the_target->core_of_thread ? (*the_target->core_of_thread) (ptid) \
712 #define target_thread_name(ptid) \
713 (the_target->thread_name ? (*the_target->thread_name) (ptid) \
716 #define target_thread_handle(ptid, handle, handle_len) \
717 (the_target->thread_handle ? (*the_target->thread_handle) \
718 (ptid, handle, handle_len) \
721 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
723 int set_desired_thread ();
725 const char *target_pid_to_str (ptid_t
);
727 int target_can_do_hardware_single_step (void);
729 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
731 #endif /* GDBSERVER_TARGET_H */