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 /* Multiple-filesystem-aware open. Like open(2), but operating in
74 the filesystem as it appears to process PID. Systems where all
75 processes share a common filesystem should set this to NULL.
76 If NULL, the caller should fall back to open(2). */
77 int (*multifs_open
) (int pid
, const char *filename
,
78 int flags
, mode_t mode
);
80 /* Multiple-filesystem-aware unlink. Like unlink(2), but operates
81 in the filesystem as it appears to process PID. Systems where
82 all processes share a common filesystem should set this to NULL.
83 If NULL, the caller should fall back to unlink(2). */
84 int (*multifs_unlink
) (int pid
, const char *filename
);
86 /* Multiple-filesystem-aware readlink. Like readlink(2), but
87 operating in the filesystem as it appears to process PID.
88 Systems where all processes share a common filesystem should
89 set this to NULL. If NULL, the caller should fall back to
91 ssize_t (*multifs_readlink
) (int pid
, const char *filename
,
92 char *buf
, size_t bufsiz
);
94 /* Return the breakpoint kind for this target based on PC. The PCPTR is
95 adjusted to the real memory location in case a flag (e.g., the Thumb bit on
96 ARM) was present in the PC. */
97 int (*breakpoint_kind_from_pc
) (CORE_ADDR
*pcptr
);
99 /* Return the software breakpoint from KIND. KIND can have target
100 specific meaning like the Z0 kind parameter.
101 SIZE is set to the software breakpoint's length in memory. */
102 const gdb_byte
*(*sw_breakpoint_from_kind
) (int kind
, int *size
);
104 /* Return the thread's name, or NULL if the target is unable to determine it.
105 The returned value must not be freed by the caller. */
106 const char *(*thread_name
) (ptid_t thread
);
108 /* Return the breakpoint kind for this target based on the current
109 processor state (e.g. the current instruction mode on ARM) and the
110 PC. The PCPTR is adjusted to the real memory location in case a flag
111 (e.g., the Thumb bit on ARM) is present in the PC. */
112 int (*breakpoint_kind_from_current_state
) (CORE_ADDR
*pcptr
);
114 /* Returns true if the target can software single step. */
115 int (*supports_software_single_step
) (void);
117 /* Return 1 if the target supports catch syscall, 0 (or leave the
118 callback NULL) otherwise. */
119 int (*supports_catch_syscall
) (void);
121 /* Return tdesc index for IPA. */
122 int (*get_ipa_tdesc_idx
) (void);
124 /* Thread ID to (numeric) thread handle: Return true on success and
125 false for failure. Return pointer to thread handle via HANDLE
126 and the handle's length via HANDLE_LEN. */
127 bool (*thread_handle
) (ptid_t ptid
, gdb_byte
**handle
, int *handle_len
);
129 /* The object that will gradually replace this struct. */
137 virtual ~process_target () = default;
139 /* Start a new process.
141 PROGRAM is a path to the program to execute.
142 PROGRAM_ARGS is a standard NULL-terminated array of arguments,
143 to be passed to the inferior as ``argv'' (along with PROGRAM).
145 Returns the new PID on success, -1 on failure. Registers the new
146 process with the process list. */
147 virtual int create_inferior (const char *program
,
148 const std::vector
<char *> &program_args
) = 0;
150 /* Do additional setup after a new process is created, including
151 exec-wrapper completion. */
152 virtual void post_create_inferior ();
154 /* Attach to a running process.
156 PID is the process ID to attach to, specified by the user
159 Returns -1 if attaching is unsupported, 0 on success, and calls
160 error() otherwise. */
161 virtual int attach (unsigned long pid
) = 0;
163 /* Kill process PROC. Return -1 on failure, and 0 on success. */
164 virtual int kill (process_info
*proc
) = 0;
166 /* Detach from process PROC. Return -1 on failure, and 0 on
168 virtual int detach (process_info
*proc
) = 0;
170 /* The inferior process has died. Do what is right. */
171 virtual void mourn (process_info
*proc
) = 0;
173 /* Wait for process PID to exit. */
174 virtual void join (int pid
) = 0;
176 /* Return true iff the thread with process ID PID is alive. */
177 virtual bool thread_alive (ptid_t pid
) = 0;
179 /* Resume the inferior process. */
180 virtual void resume (thread_resume
*resume_info
, size_t n
) = 0;
182 /* Wait for the inferior process or thread to change state. Store
183 status through argument pointer STATUS.
185 PTID = -1 to wait for any pid to do something, PTID(pid,0,0) to
186 wait for any thread of process pid to do something. Return ptid
187 of child, or -1 in case of error; store status through argument
188 pointer STATUS. OPTIONS is a bit set of options defined as
189 TARGET_W* above. If options contains TARGET_WNOHANG and there's
190 no child stop to report, return is
191 null_ptid/TARGET_WAITKIND_IGNORE. */
192 virtual ptid_t
wait (ptid_t ptid
, target_waitstatus
*status
,
195 /* Fetch registers from the inferior process.
197 If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */
198 virtual void fetch_registers (regcache
*regcache
, int regno
) = 0;
200 /* Store registers to the inferior process.
202 If REGNO is -1, store all registers; otherwise, store at least REGNO. */
203 virtual void store_registers (regcache
*regcache
, int regno
) = 0;
205 /* Prepare to read or write memory from the inferior process.
206 Targets use this to do what is necessary to get the state of the
207 inferior such that it is possible to access memory.
209 This should generally only be called from client facing routines,
210 such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
213 Like `read_memory' and `write_memory' below, returns 0 on success
214 and errno on failure. */
215 virtual int prepare_to_access_memory ();
217 /* Undo the effects of prepare_to_access_memory. */
218 virtual void done_accessing_memory ();
220 /* Read memory from the inferior process. This should generally be
221 called through read_inferior_memory, which handles breakpoint shadowing.
223 Read LEN bytes at MEMADDR into a buffer at MYADDR.
225 Returns 0 on success and errno on failure. */
226 virtual int read_memory (CORE_ADDR memaddr
, unsigned char *myaddr
,
229 /* Write memory to the inferior process. This should generally be
230 called through target_write_memory, which handles breakpoint shadowing.
232 Write LEN bytes from the buffer at MYADDR to MEMADDR.
234 Returns 0 on success and errno on failure. */
235 virtual int write_memory (CORE_ADDR memaddr
, const unsigned char *myaddr
,
238 /* Query GDB for the values of any symbols we're interested in.
239 This function is called whenever we receive a "qSymbols::"
240 query, which corresponds to every time more symbols (might)
242 virtual void look_up_symbols ();
244 /* Send an interrupt request to the inferior process,
245 however is appropriate. */
246 virtual void request_interrupt () = 0;
248 /* Return true if the read_auxv target op is supported. */
249 virtual bool supports_read_auxv ();
251 /* Read auxiliary vector data from the inferior process.
253 Read LEN bytes at OFFSET into a buffer at MYADDR. */
254 virtual int read_auxv (CORE_ADDR offset
, unsigned char *myaddr
,
257 /* Returns true if GDB Z breakpoint type TYPE is supported, false
258 otherwise. The type is coded as follows:
259 '0' - software-breakpoint
260 '1' - hardware-breakpoint
261 '2' - write watchpoint
262 '3' - read watchpoint
263 '4' - access watchpoint
265 virtual bool supports_z_point_type (char z_type
);
267 /* Insert and remove a break or watchpoint.
268 Returns 0 on success, -1 on failure and 1 on unsupported. */
269 virtual int insert_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
270 int size
, raw_breakpoint
*bp
);
272 virtual int remove_point (enum raw_bkpt_type type
, CORE_ADDR addr
,
273 int size
, raw_breakpoint
*bp
);
275 /* Returns true if the target stopped because it executed a software
276 breakpoint instruction, false otherwise. */
277 virtual bool stopped_by_sw_breakpoint ();
279 /* Returns true if the target knows whether a trap was caused by a
280 SW breakpoint triggering. */
281 virtual bool supports_stopped_by_sw_breakpoint ();
283 /* Returns true if the target stopped for a hardware breakpoint. */
284 virtual bool stopped_by_hw_breakpoint ();
286 /* Returns true if the target knows whether a trap was caused by a
287 HW breakpoint triggering. */
288 virtual bool supports_stopped_by_hw_breakpoint ();
290 /* Returns true if the target can do hardware single step. */
291 virtual bool supports_hardware_single_step ();
293 /* Returns true if target was stopped due to a watchpoint hit, false
295 virtual bool stopped_by_watchpoint ();
297 /* Returns the address associated with the watchpoint that hit, if any;
298 returns 0 otherwise. */
299 virtual CORE_ADDR
stopped_data_address ();
301 /* Return true if the read_offsets target op is supported. */
302 virtual bool supports_read_offsets ();
304 /* Reports the text, data offsets of the executable. This is
305 needed for uclinux where the executable is relocated during load
307 virtual int read_offsets (CORE_ADDR
*text
, CORE_ADDR
*data
);
309 /* Return true if the get_tls_address target op is supported. */
310 virtual bool supports_get_tls_address ();
312 /* Fetch the address associated with a specific thread local storage
313 area, determined by the specified THREAD, OFFSET, and LOAD_MODULE.
314 Stores it in *ADDRESS and returns zero on success; otherwise returns
315 an error code. A return value of -1 means this system does not
316 support the operation. */
317 virtual int get_tls_address (thread_info
*thread
, CORE_ADDR offset
,
318 CORE_ADDR load_module
, CORE_ADDR
*address
);
320 /* Fill BUF with an hostio error packet representing the last hostio
322 virtual void hostio_last_error (char *buf
);
324 /* Return true if the qxfer_osdata target op is supported. */
325 virtual bool supports_qxfer_osdata ();
327 /* Read/Write OS data using qXfer packets. */
328 virtual int qxfer_osdata (const char *annex
, unsigned char *readbuf
,
329 unsigned const char *writebuf
,
330 CORE_ADDR offset
, int len
);
332 /* Return true if the qxfer_siginfo target op is supported. */
333 virtual bool supports_qxfer_siginfo ();
335 /* Read/Write extra signal info. */
336 virtual int qxfer_siginfo (const char *annex
, unsigned char *readbuf
,
337 unsigned const char *writebuf
,
338 CORE_ADDR offset
, int len
);
340 /* Return true if non-stop mode is supported. */
341 virtual bool supports_non_stop ();
343 /* Enables async target events. Returns the previous enable
345 virtual bool async (bool enable
);
347 /* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
348 mode. Return 0 on success, -1 otherwise. */
349 virtual int start_non_stop (bool enable
);
351 /* Returns true if the target supports multi-process debugging. */
352 virtual bool supports_multi_process ();
354 /* Returns true if fork events are supported. */
355 virtual bool supports_fork_events ();
357 /* Returns true if vfork events are supported. */
358 virtual bool supports_vfork_events ();
360 /* Returns true if exec events are supported. */
361 virtual bool supports_exec_events ();
363 /* Allows target to re-initialize connection-specific settings. */
364 virtual void handle_new_gdb_connection ();
366 /* The target-specific routine to process monitor command.
367 Returns 1 if handled, or 0 to perform default processing. */
368 virtual int handle_monitor_command (char *mon
);
370 /* Returns the core given a thread, or -1 if not known. */
371 virtual int core_of_thread (ptid_t ptid
);
373 /* Returns true if the read_loadmap target op is supported. */
374 virtual bool supports_read_loadmap ();
376 /* Read loadmaps. Read LEN bytes at OFFSET into a buffer at MYADDR. */
377 virtual int read_loadmap (const char *annex
, CORE_ADDR offset
,
378 unsigned char *myaddr
, unsigned int len
);
380 /* Target specific qSupported support. FEATURES is an array of
381 features with COUNT elements. */
382 virtual void process_qsupported (char **features
, int count
);
384 /* Return true if the target supports tracepoints, false otherwise. */
385 virtual bool supports_tracepoints ();
387 /* Read PC from REGCACHE. */
388 virtual CORE_ADDR
read_pc (regcache
*regcache
);
390 /* Write PC to REGCACHE. */
391 virtual void write_pc (regcache
*regcache
, CORE_ADDR pc
);
393 /* Return true if the thread_stopped op is supported. */
394 virtual bool supports_thread_stopped ();
396 /* Return true if THREAD is known to be stopped now. */
397 virtual bool thread_stopped (thread_info
*thread
);
399 /* Return true if the get_tib_address op is supported. */
400 virtual bool supports_get_tib_address ();
402 /* Read Thread Information Block address. */
403 virtual int get_tib_address (ptid_t ptid
, CORE_ADDR
*address
);
405 /* Pause all threads. If FREEZE, arrange for any resume attempt to
406 be ignored until an unpause_all call unfreezes threads again.
407 There can be nested calls to pause_all, so a freeze counter
408 should be maintained. */
409 virtual void pause_all (bool freeze
);
411 /* Unpause all threads. Threads that hadn't been resumed by the
412 client should be left stopped. Basically a pause/unpause call
413 pair should not end up resuming threads that were stopped before
415 virtual void unpause_all (bool unfreeze
);
417 /* Stabilize all threads. That is, force them out of jump pads. */
418 virtual void stabilize_threads ();
420 /* Return true if the install_fast_tracepoint_jump_pad op is
422 virtual bool supports_fast_tracepoints ();
424 /* Install a fast tracepoint jump pad. TPOINT is the address of the
425 tracepoint internal object as used by the IPA agent. TPADDR is
426 the address of tracepoint. COLLECTOR is address of the function
427 the jump pad redirects to. LOCKADDR is the address of the jump
428 pad lock object. ORIG_SIZE is the size in bytes of the
429 instruction at TPADDR. JUMP_ENTRY points to the address of the
430 jump pad entry, and on return holds the address past the end of
431 the created jump pad. If a trampoline is created by the function,
432 then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
433 the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
434 buffer containing a copy of the instruction at TPADDR.
435 ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
436 return the address range where the instruction at TPADDR was relocated
437 to. If an error occurs, the ERR may be used to pass on an error
439 virtual int install_fast_tracepoint_jump_pad
440 (CORE_ADDR tpoint
, CORE_ADDR tpaddr
, CORE_ADDR collector
,
441 CORE_ADDR lockaddr
, ULONGEST orig_size
, CORE_ADDR
*jump_entry
,
442 CORE_ADDR
*trampoline
, ULONGEST
*trampoline_size
,
443 unsigned char *jjump_pad_insn
, ULONGEST
*jjump_pad_insn_size
,
444 CORE_ADDR
*adjusted_insn_addr
, CORE_ADDR
*adjusted_insn_addr_end
,
447 /* Return the minimum length of an instruction that can be safely
448 overwritten for use as a fast tracepoint. */
449 virtual int get_min_fast_tracepoint_insn_len ();
451 /* Return the bytecode operations vector for the current inferior.
452 Returns nullptr if bytecode compilation is not supported. */
453 virtual struct emit_ops
*emit_ops ();
455 /* Returns true if the target supports disabling randomization. */
456 virtual bool supports_disable_randomization ();
458 /* Return true if the qxfer_libraries_svr4 op is supported. */
459 virtual bool supports_qxfer_libraries_svr4 ();
461 /* Read solib info on SVR4 platforms. */
462 virtual int qxfer_libraries_svr4 (const char *annex
,
463 unsigned char *readbuf
,
464 unsigned const char *writebuf
,
465 CORE_ADDR offset
, int len
);
467 /* Return true if target supports debugging agent. */
468 virtual bool supports_agent ();
470 /* Enable branch tracing for PTID based on CONF and allocate a branch trace
471 target information struct for reading and for disabling branch trace. */
472 virtual btrace_target_info
*enable_btrace (ptid_t ptid
,
473 const btrace_config
*conf
);
475 /* Disable branch tracing.
476 Returns zero on success, non-zero otherwise. */
477 virtual int disable_btrace (btrace_target_info
*tinfo
);
479 /* Read branch trace data into buffer.
480 Return 0 on success; print an error message into BUFFER and return -1,
482 virtual int read_btrace (btrace_target_info
*tinfo
, buffer
*buf
,
483 enum btrace_read_type type
);
485 /* Read the branch trace configuration into BUFFER.
486 Return 0 on success; print an error message into BUFFER and return -1
488 virtual int read_btrace_conf (const btrace_target_info
*tinfo
,
491 /* Return true if target supports range stepping. */
492 virtual bool supports_range_stepping ();
494 /* Return true if the pid_to_exec_file op is supported. */
495 virtual bool supports_pid_to_exec_file ();
497 /* Return the full absolute name of the executable file that was
498 run to create the process PID. If the executable file cannot
499 be determined, NULL is returned. Otherwise, a pointer to a
500 character string containing the pathname is returned. This
501 string should be copied into a buffer by the client if the string
502 will not be immediately used, or if it must persist. */
503 virtual char *pid_to_exec_file (int pid
);
506 extern process_stratum_target
*the_target
;
508 void set_target_ops (process_stratum_target
*);
510 #define target_create_inferior(program, program_args) \
511 the_target->pt->create_inferior (program, program_args)
513 #define target_post_create_inferior() \
514 the_target->pt->post_create_inferior ()
516 #define myattach(pid) \
517 the_target->pt->attach (pid)
519 int kill_inferior (process_info
*proc
);
521 #define target_supports_fork_events() \
522 the_target->pt->supports_fork_events ()
524 #define target_supports_vfork_events() \
525 the_target->pt->supports_vfork_events ()
527 #define target_supports_exec_events() \
528 the_target->pt->supports_exec_events ()
530 #define target_handle_new_gdb_connection() \
531 the_target->pt->handle_new_gdb_connection ()
533 #define detach_inferior(proc) \
534 the_target->pt->detach (proc)
536 #define mythread_alive(pid) \
537 the_target->pt->thread_alive (pid)
539 #define fetch_inferior_registers(regcache, regno) \
540 the_target->pt->fetch_registers (regcache, regno)
542 #define store_inferior_registers(regcache, regno) \
543 the_target->pt->store_registers (regcache, regno)
545 #define join_inferior(pid) \
546 the_target->pt->join (pid)
548 #define target_supports_non_stop() \
549 the_target->pt->supports_non_stop ()
551 #define target_async(enable) \
552 the_target->pt->async (enable)
554 #define target_process_qsupported(features, count) \
555 the_target->pt->process_qsupported (features, count)
557 #define target_supports_catch_syscall() \
558 (the_target->supports_catch_syscall ? \
559 (*the_target->supports_catch_syscall) () : 0)
561 #define target_get_ipa_tdesc_idx() \
562 (the_target->get_ipa_tdesc_idx \
563 ? (*the_target->get_ipa_tdesc_idx) () : 0)
565 #define target_supports_tracepoints() \
566 the_target->pt->supports_tracepoints ()
568 #define target_supports_fast_tracepoints() \
569 the_target->pt->supports_fast_tracepoints ()
571 #define target_get_min_fast_tracepoint_insn_len() \
572 the_target->pt->get_min_fast_tracepoint_insn_len ()
574 #define target_thread_stopped(thread) \
575 the_target->pt->thread_stopped (thread)
577 #define target_pause_all(freeze) \
578 the_target->pt->pause_all (freeze)
580 #define target_unpause_all(unfreeze) \
581 the_target->pt->unpause_all (unfreeze)
583 #define target_stabilize_threads() \
584 the_target->pt->stabilize_threads ()
586 #define target_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->pt->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->pt->emit_ops ()
610 #define target_supports_disable_randomization() \
611 the_target->pt->supports_disable_randomization ()
613 #define target_supports_agent() \
614 the_target->pt->supports_agent ()
616 static inline struct btrace_target_info
*
617 target_enable_btrace (ptid_t ptid
, const struct btrace_config
*conf
)
619 return the_target
->pt
->enable_btrace (ptid
, conf
);
623 target_disable_btrace (struct btrace_target_info
*tinfo
)
625 return the_target
->pt
->disable_btrace (tinfo
);
629 target_read_btrace (struct btrace_target_info
*tinfo
,
630 struct buffer
*buffer
,
631 enum btrace_read_type type
)
633 return the_target
->pt
->read_btrace (tinfo
, buffer
, type
);
637 target_read_btrace_conf (struct btrace_target_info
*tinfo
,
638 struct buffer
*buffer
)
640 return the_target
->pt
->read_btrace_conf (tinfo
, buffer
);
643 #define target_supports_range_stepping() \
644 the_target->pt->supports_range_stepping ()
646 #define target_supports_stopped_by_sw_breakpoint() \
647 the_target->pt->supports_stopped_by_sw_breakpoint ()
649 #define target_stopped_by_sw_breakpoint() \
650 the_target->pt->stopped_by_sw_breakpoint ()
652 #define target_supports_stopped_by_hw_breakpoint() \
653 the_target->pt->supports_stopped_by_hw_breakpoint ()
655 #define target_supports_hardware_single_step() \
656 the_target->pt->supports_hardware_single_step ()
658 #define target_stopped_by_hw_breakpoint() \
659 the_target->pt->stopped_by_hw_breakpoint ()
661 #define target_breakpoint_kind_from_pc(pcptr) \
662 (the_target->breakpoint_kind_from_pc \
663 ? (*the_target->breakpoint_kind_from_pc) (pcptr) \
664 : default_breakpoint_kind_from_pc (pcptr))
666 #define target_breakpoint_kind_from_current_state(pcptr) \
667 (the_target->breakpoint_kind_from_current_state \
668 ? (*the_target->breakpoint_kind_from_current_state) (pcptr) \
669 : target_breakpoint_kind_from_pc (pcptr))
671 #define target_supports_software_single_step() \
672 (the_target->supports_software_single_step ? \
673 (*the_target->supports_software_single_step) () : 0)
675 ptid_t
mywait (ptid_t ptid
, struct target_waitstatus
*ourstatus
, int options
,
678 /* Prepare to read or write memory from the inferior process. See the
679 corresponding process_stratum_target methods for more details. */
681 int prepare_to_access_memory (void);
682 void done_accessing_memory (void);
684 #define target_core_of_thread(ptid) \
685 the_target->pt->core_of_thread (ptid)
687 #define target_thread_name(ptid) \
688 (the_target->thread_name ? (*the_target->thread_name) (ptid) \
691 #define target_thread_handle(ptid, handle, handle_len) \
692 (the_target->thread_handle ? (*the_target->thread_handle) \
693 (ptid, handle, handle_len) \
696 int read_inferior_memory (CORE_ADDR memaddr
, unsigned char *myaddr
, int len
);
698 int set_desired_thread ();
700 const char *target_pid_to_str (ptid_t
);
702 int default_breakpoint_kind_from_pc (CORE_ADDR
*pcptr
);
704 #endif /* GDBSERVER_TARGET_H */