1 /* Common definitions for remote server for GDB.
2 Copyright (C) 1993, 1995, 1997-2000, 2002-2012 Free Software
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "wincecompat.h"
44 /* On some systems such as MinGW, alloca is declared in malloc.h
45 (there is no alloca.h). */
50 #if !HAVE_DECL_STRERROR
52 extern char *strerror (int); /* X3.159-1989 4.11.6.2 */
58 extern void perror (const char *);
63 extern void *memmem (const void *, size_t , const void *, size_t);
66 #if !HAVE_DECL_VASPRINTF
67 extern int vasprintf(char **strp, const char *fmt, va_list ap);
69 #if !HAVE_DECL_VSNPRINTF
70 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
74 #if defined(__GNUC__) && (__GNUC__ > 2 \
75 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
76 #define ATTR_NORETURN __attribute__ ((noreturn))
78 #define ATTR_NORETURN /* nothing */
83 #if defined(__GNUC__) && (__GNUC__ > 2 \
84 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
85 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
87 #define ATTR_FORMAT(type, x, y) /* nothing */
92 #if defined(__GNUC__) && (__GNUC__ >= 3)
93 #define ATTR_MALLOC __attribute__ ((__malloc__))
95 #define ATTR_MALLOC /* nothing */
99 /* Define underscore macro, if not available, to be able to use it inside
100 code shared with gdb in common directory. */
102 #define _(String) (String)
105 #ifdef IN_PROCESS_AGENT
108 # define PROG "gdbserver"
111 /* A type used for binary buffers. */
112 typedef unsigned char gdb_byte;
116 #include "xml-utils.h"
117 #include "gdb_locale.h"
119 /* FIXME: This should probably be autoconf'd for. It's an integer type at
120 least the size of a (void *). */
121 typedef long long CORE_ADDR;
123 typedef long long LONGEST;
124 typedef unsigned long long ULONGEST;
126 /* Generic information for tracking a list of ``inferiors'' - threads,
130 struct inferior_list_entry *head;
131 struct inferior_list_entry *tail;
133 struct inferior_list_entry
136 struct inferior_list_entry *next;
143 #include "regcache.h"
144 #include "gdb/signals.h"
145 #include "gdb_signals.h"
147 #include "mem-break.h"
151 struct inferior_list_entry entry;
155 /* The last resume GDB requested on this thread. */
156 enum resume_kind last_resume_kind;
158 /* The last wait status reported for this thread. */
159 struct target_waitstatus last_status;
161 /* Given `while-stepping', a thread may be collecting data for more
162 than one tracepoint simultaneously. E.g.:
164 ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs
166 ff0003 INSN3 <-- TP2, collect $regs
167 ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs
170 Notice that when instruction INSN5 is reached, the while-stepping
171 actions of both TP1 and TP3 are still being collected, and that TP2
172 had been collected meanwhile. The whole range of ff0001-ff0005
173 should be single-stepped, due to at least TP1's while-stepping
174 action covering the whole range.
176 On the other hand, the same tracepoint with a while-stepping action
177 may be hit by more than one thread simultaneously, hence we can't
178 keep the current step count in the tracepoint itself.
180 This is the head of the list of the states of `while-stepping'
181 tracepoint actions this thread is now collecting; NULL if empty.
182 Each item in the list holds the current step of the while-stepping
184 struct wstep_state *while_stepping;
189 struct inferior_list_entry entry;
196 struct raw_breakpoint;
197 struct fast_tracepoint_jump;
198 struct process_info_private;
202 struct inferior_list_entry head;
204 /* Nonzero if this child process was attached rather than
208 /* True if GDB asked us to detach from this process, but we remained
212 /* The symbol cache. */
213 struct sym_cache *symbol_cache;
215 /* The list of memory breakpoints. */
216 struct breakpoint *breakpoints;
218 /* The list of raw memory breakpoints. */
219 struct raw_breakpoint *raw_breakpoints;
221 /* The list of installed fast tracepoints. */
222 struct fast_tracepoint_jump *fast_tracepoint_jumps;
224 /* Private target data. */
225 struct process_info_private *private;
228 /* Return a pointer to the process that corresponds to the current
229 thread (current_inferior). It is an error to call this if there is
230 no current thread selected. */
232 struct process_info *current_process (void);
233 struct process_info *get_thread_process (struct thread_info *);
235 /* Target-specific functions */
237 void initialize_low ();
239 /* From inferiors.c. */
241 extern struct inferior_list all_processes;
242 extern struct inferior_list all_threads;
243 extern struct inferior_list all_dlls;
244 extern int dlls_changed;
245 extern void clear_dlls (void);
247 void add_inferior_to_list (struct inferior_list *list,
248 struct inferior_list_entry *new_inferior);
249 void for_each_inferior (struct inferior_list *list,
250 void (*action) (struct inferior_list_entry *));
252 extern struct thread_info *current_inferior;
253 void remove_inferior (struct inferior_list *list,
254 struct inferior_list_entry *entry);
255 void remove_thread (struct thread_info *thread);
256 void add_thread (ptid_t ptid, void *target_data);
258 struct process_info *add_process (int pid, int attached);
259 void remove_process (struct process_info *process);
260 struct process_info *find_process_pid (int pid);
261 int have_started_inferiors_p (void);
262 int have_attached_inferiors_p (void);
264 struct thread_info *find_thread_ptid (ptid_t ptid);
266 ptid_t thread_id_to_gdb_id (ptid_t);
267 ptid_t thread_to_gdb_id (struct thread_info *);
268 ptid_t gdb_id_to_thread_id (ptid_t);
269 struct thread_info *gdb_id_to_thread (unsigned int);
270 void clear_inferiors (void);
271 struct inferior_list_entry *find_inferior
272 (struct inferior_list *,
273 int (*func) (struct inferior_list_entry *,
276 struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
278 void *inferior_target_data (struct thread_info *);
279 void set_inferior_target_data (struct thread_info *, void *);
280 void *inferior_regcache_data (struct thread_info *);
281 void set_inferior_regcache_data (struct thread_info *, void *);
282 void add_pid_to_list (struct inferior_list *list, unsigned long pid);
283 int pull_pid_from_list (struct inferior_list *list, unsigned long pid);
285 void loaded_dll (const char *name, CORE_ADDR base_addr);
286 void unloaded_dll (const char *name, CORE_ADDR base_addr);
288 /* Public variables in server.c */
290 extern ptid_t cont_thread;
291 extern ptid_t general_thread;
293 extern int server_waiting;
294 extern int debug_threads;
295 extern int debug_hw_points;
296 extern int pass_signals[];
298 extern jmp_buf toplevel;
300 extern int disable_packet_vCont;
301 extern int disable_packet_Tthread;
302 extern int disable_packet_qC;
303 extern int disable_packet_qfThreadInfo;
306 extern int multi_process;
309 extern int disable_randomization;
312 #include <winsock2.h>
313 typedef SOCKET gdb_fildes_t;
315 typedef int gdb_fildes_t;
318 /* Functions from event-loop.c. */
319 typedef void *gdb_client_data;
320 typedef int (handler_func) (int, gdb_client_data);
321 typedef int (callback_handler_func) (gdb_client_data);
323 extern void delete_file_handler (gdb_fildes_t fd);
324 extern void add_file_handler (gdb_fildes_t fd, handler_func *proc,
325 gdb_client_data client_data);
326 extern int append_callback_event (callback_handler_func *proc,
327 gdb_client_data client_data);
328 extern void delete_callback_event (int id);
330 extern void start_event_loop (void);
332 /* Functions from server.c. */
333 extern int handle_serial_event (int err, gdb_client_data client_data);
334 extern int handle_target_event (int err, gdb_client_data client_data);
336 extern void push_event (ptid_t ptid, struct target_waitstatus *status);
338 /* Functions from hostio.c. */
339 extern int handle_vFile (char *, int, int *);
341 /* Functions from hostio-errno.c. */
342 extern void hostio_last_error_from_errno (char *own_buf);
344 /* From remote-utils.c */
346 extern int remote_debug;
347 extern int noack_mode;
348 extern int transport_is_reliable;
350 int gdb_connected (void);
352 #define STDIO_CONNECTION_NAME "stdio"
353 int remote_connection_is_stdio (void);
355 ptid_t read_ptid (char *buf, char **obuf);
356 char *write_ptid (char *buf, ptid_t ptid);
358 int putpkt (char *buf);
359 int putpkt_binary (char *buf, int len);
360 int putpkt_notif (char *buf);
361 int getpkt (char *buf);
362 void remote_prepare (char *name);
363 void remote_open (char *name);
364 void remote_close (void);
365 void write_ok (char *buf);
366 void write_enn (char *buf);
367 void initialize_async_io (void);
368 void enable_async_io (void);
369 void disable_async_io (void);
370 void check_remote_input_interrupt_request (void);
371 void convert_ascii_to_int (const char *from, unsigned char *to, int n);
372 void convert_int_to_ascii (const unsigned char *from, char *to, int n);
373 void new_thread_notify (int id);
374 void dead_thread_notify (int id);
375 void prepare_resume_reply (char *buf, ptid_t ptid,
376 struct target_waitstatus *status);
378 const char *decode_address_to_semicolon (CORE_ADDR *addrp, const char *start);
379 void decode_address (CORE_ADDR *addrp, const char *start, int len);
380 void decode_m_packet (char *from, CORE_ADDR * mem_addr_ptr,
381 unsigned int *len_ptr);
382 void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr,
383 unsigned int *len_ptr, unsigned char **to_p);
384 int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr,
385 unsigned int *len_ptr, unsigned char **to_p);
386 int decode_xfer_write (char *buf, int packet_len,
387 CORE_ADDR *offset, unsigned int *len,
388 unsigned char *data);
389 int decode_search_memory_packet (const char *buf, int packet_len,
390 CORE_ADDR *start_addrp,
391 CORE_ADDR *search_space_lenp,
393 unsigned int *pattern_lenp);
395 int unhexify (char *bin, const char *hex, int count);
396 int hexify (char *hex, const char *bin, int count);
397 int remote_escape_output (const gdb_byte *buffer, int len,
398 gdb_byte *out_buf, int *out_len,
400 char *unpack_varlen_hex (char *buff, ULONGEST *result);
402 void clear_symbol_cache (struct sym_cache **symcache_p);
403 int look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb);
405 int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc);
407 void monitor_output (const char *msg);
409 /* Functions from utils.c */
410 #include "common-utils.h"
412 void *xmalloc (size_t) ATTR_MALLOC;
413 void *xrealloc (void *, size_t);
414 void *xcalloc (size_t, size_t) ATTR_MALLOC;
415 char *xstrdup (const char *) ATTR_MALLOC;
416 int xsnprintf (char *str, size_t size, const char *format, ...)
417 ATTR_FORMAT (printf, 3, 4);;
418 void freeargv (char **argv);
419 void perror_with_name (const char *string);
420 void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
421 void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
422 void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2);
423 char *paddress (CORE_ADDR addr);
424 char *pulongest (ULONGEST u);
425 char *plongest (LONGEST l);
426 char *phex_nz (ULONGEST l, int sizeof_l);
427 char *pfildes (gdb_fildes_t fd);
429 #include "gdb_assert.h"
431 /* Maximum number of bytes to read/write at once. The value here
432 is chosen to fill up a packet (the headers account for the 32). */
433 #define MAXBUFBYTES(N) (((N)-32)/2)
435 /* Buffer sizes for transferring memory, registers, etc. Set to a constant
436 value to accomodate multiple register formats. This value must be at least
437 as large as the largest register set supported by gdbserver. */
438 #define PBUFSIZ 16384
440 /* Functions from tracepoint.c */
442 /* Size for a small buffer to report problems from the in-process
443 agent back to GDBserver. */
444 #define IPA_BUFSIZ 100
446 int in_process_agent_loaded (void);
448 void initialize_tracepoint (void);
451 extern int disconnected_tracing;
453 void tracepoint_look_up_symbols (void);
455 void stop_tracing (void);
457 int handle_tracepoint_general_set (char *own_buf);
458 int handle_tracepoint_query (char *own_buf);
460 int tracepoint_finished_step (struct thread_info *tinfo, CORE_ADDR stop_pc);
461 int tracepoint_was_hit (struct thread_info *tinfo, CORE_ADDR stop_pc);
463 void release_while_stepping_state_list (struct thread_info *tinfo);
465 extern int current_traceframe;
467 int in_readonly_region (CORE_ADDR addr, ULONGEST length);
468 int traceframe_read_mem (int tfnum, CORE_ADDR addr,
469 unsigned char *buf, ULONGEST length,
471 int fetch_traceframe_registers (int tfnum,
472 struct regcache *regcache,
475 int traceframe_read_sdata (int tfnum, ULONGEST offset,
476 unsigned char *buf, ULONGEST length,
479 int traceframe_read_info (int tfnum, struct buffer *buffer);
481 /* If a thread is determined to be collecting a fast tracepoint, this
482 structure holds the collect status. */
484 struct fast_tpoint_collect_status
486 /* The tracepoint that is presently being collected. */
488 CORE_ADDR tpoint_addr;
490 /* The address range in the jump pad of where the original
491 instruction the tracepoint jump was inserted was relocated
493 CORE_ADDR adjusted_insn_addr;
494 CORE_ADDR adjusted_insn_addr_end;
497 int fast_tracepoint_collecting (CORE_ADDR thread_area,
499 struct fast_tpoint_collect_status *status);
500 void force_unlock_trace_buffer (void);
502 int handle_tracepoint_bkpts (struct thread_info *tinfo, CORE_ADDR stop_pc);
504 #ifdef IN_PROCESS_AGENT
505 void initialize_low_tracepoint (void);
506 void supply_fast_tracepoint_registers (struct regcache *regcache,
507 const unsigned char *regs);
508 void supply_static_tracepoint_registers (struct regcache *regcache,
509 const unsigned char *regs,
511 void set_trampoline_buffer_space (CORE_ADDR begin, CORE_ADDR end,
514 void stop_tracing (void);
516 int claim_trampoline_space (ULONGEST used, CORE_ADDR *trampoline);
517 int have_fast_tracepoint_trampoline_buffer (char *msgbuf);
522 /* Do memory copies for bytecodes. */
523 /* Do the recording of memory blocks for actions and bytecodes. */
525 int agent_mem_read (struct traceframe *tframe,
526 unsigned char *to, CORE_ADDR from,
529 LONGEST agent_get_trace_state_variable_value (int num);
530 void agent_set_trace_state_variable_value (int num, LONGEST val);
532 /* Record the value of a trace state variable. */
534 int agent_tsv_read (struct traceframe *tframe, int n);
535 int agent_mem_read_string (struct traceframe *tframe,
540 /* Bytecode compilation function vector. */
544 void (*emit_prologue) (void);
545 void (*emit_epilogue) (void);
546 void (*emit_add) (void);
547 void (*emit_sub) (void);
548 void (*emit_mul) (void);
549 void (*emit_lsh) (void);
550 void (*emit_rsh_signed) (void);
551 void (*emit_rsh_unsigned) (void);
552 void (*emit_ext) (int arg);
553 void (*emit_log_not) (void);
554 void (*emit_bit_and) (void);
555 void (*emit_bit_or) (void);
556 void (*emit_bit_xor) (void);
557 void (*emit_bit_not) (void);
558 void (*emit_equal) (void);
559 void (*emit_less_signed) (void);
560 void (*emit_less_unsigned) (void);
561 void (*emit_ref) (int size);
562 void (*emit_if_goto) (int *offset_p, int *size_p);
563 void (*emit_goto) (int *offset_p, int *size_p);
564 void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size);
565 void (*emit_const) (LONGEST num);
566 void (*emit_call) (CORE_ADDR fn);
567 void (*emit_reg) (int reg);
568 void (*emit_pop) (void);
569 void (*emit_stack_flush) (void);
570 void (*emit_zero_ext) (int arg);
571 void (*emit_swap) (void);
572 void (*emit_stack_adjust) (int n);
574 /* Emit code for a generic function that takes one fixed integer
575 argument and returns a 64-bit int (for instance, tsv getter). */
576 void (*emit_int_call_1) (CORE_ADDR fn, int arg1);
578 /* Emit code for a generic function that takes one fixed integer
579 argument and a 64-bit int from the top of the stack, and returns
580 nothing (for instance, tsv setter). */
581 void (*emit_void_call_2) (CORE_ADDR fn, int arg1);
583 /* Emit code specialized for common combinations of compare followed
585 void (*emit_eq_goto) (int *offset_p, int *size_p);
586 void (*emit_ne_goto) (int *offset_p, int *size_p);
587 void (*emit_lt_goto) (int *offset_p, int *size_p);
588 void (*emit_le_goto) (int *offset_p, int *size_p);
589 void (*emit_gt_goto) (int *offset_p, int *size_p);
590 void (*emit_ge_goto) (int *offset_p, int *size_p);
593 /* Returns the address of the get_raw_reg function in the IPA. */
594 CORE_ADDR get_raw_reg_func_addr (void);
595 /* Returns the address of the get_trace_state_variable_value
596 function in the IPA. */
597 CORE_ADDR get_get_tsv_func_addr (void);
598 /* Returns the address of the set_trace_state_variable_value
599 function in the IPA. */
600 CORE_ADDR get_set_tsv_func_addr (void);
602 CORE_ADDR current_insn_ptr;
605 /* Version information, from version.c. */
606 extern const char version[];
607 extern const char host_name[];
609 #endif /* SERVER_H */