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 /* A type used for binary buffers. */
106 typedef unsigned char gdb_byte;
110 #include "xml-utils.h"
111 #include "gdb_locale.h"
113 /* FIXME: This should probably be autoconf'd for. It's an integer type at
114 least the size of a (void *). */
115 typedef long long CORE_ADDR;
117 typedef long long LONGEST;
118 typedef unsigned long long ULONGEST;
120 /* Generic information for tracking a list of ``inferiors'' - threads,
124 struct inferior_list_entry *head;
125 struct inferior_list_entry *tail;
127 struct inferior_list_entry
130 struct inferior_list_entry *next;
137 #include "regcache.h"
138 #include "gdb/signals.h"
139 #include "gdb_signals.h"
141 #include "mem-break.h"
145 struct inferior_list_entry entry;
149 /* The last resume GDB requested on this thread. */
150 enum resume_kind last_resume_kind;
152 /* The last wait status reported for this thread. */
153 struct target_waitstatus last_status;
155 /* Given `while-stepping', a thread may be collecting data for more
156 than one tracepoint simultaneously. E.g.:
158 ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs
160 ff0003 INSN3 <-- TP2, collect $regs
161 ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs
164 Notice that when instruction INSN5 is reached, the while-stepping
165 actions of both TP1 and TP3 are still being collected, and that TP2
166 had been collected meanwhile. The whole range of ff0001-ff0005
167 should be single-stepped, due to at least TP1's while-stepping
168 action covering the whole range.
170 On the other hand, the same tracepoint with a while-stepping action
171 may be hit by more than one thread simultaneously, hence we can't
172 keep the current step count in the tracepoint itself.
174 This is the head of the list of the states of `while-stepping'
175 tracepoint actions this thread is now collecting; NULL if empty.
176 Each item in the list holds the current step of the while-stepping
178 struct wstep_state *while_stepping;
183 struct inferior_list_entry entry;
190 struct raw_breakpoint;
191 struct fast_tracepoint_jump;
192 struct process_info_private;
196 struct inferior_list_entry head;
198 /* Nonzero if this child process was attached rather than
202 /* True if GDB asked us to detach from this process, but we remained
206 /* The symbol cache. */
207 struct sym_cache *symbol_cache;
209 /* The list of memory breakpoints. */
210 struct breakpoint *breakpoints;
212 /* The list of raw memory breakpoints. */
213 struct raw_breakpoint *raw_breakpoints;
215 /* The list of installed fast tracepoints. */
216 struct fast_tracepoint_jump *fast_tracepoint_jumps;
218 /* Private target data. */
219 struct process_info_private *private;
222 /* Return a pointer to the process that corresponds to the current
223 thread (current_inferior). It is an error to call this if there is
224 no current thread selected. */
226 struct process_info *current_process (void);
227 struct process_info *get_thread_process (struct thread_info *);
229 /* Target-specific functions */
231 void initialize_low ();
233 /* From inferiors.c. */
235 extern struct inferior_list all_processes;
236 extern struct inferior_list all_threads;
237 extern struct inferior_list all_dlls;
238 extern int dlls_changed;
239 extern void clear_dlls (void);
241 void add_inferior_to_list (struct inferior_list *list,
242 struct inferior_list_entry *new_inferior);
243 void for_each_inferior (struct inferior_list *list,
244 void (*action) (struct inferior_list_entry *));
246 extern struct thread_info *current_inferior;
247 void remove_inferior (struct inferior_list *list,
248 struct inferior_list_entry *entry);
249 void remove_thread (struct thread_info *thread);
250 void add_thread (ptid_t ptid, void *target_data);
252 struct process_info *add_process (int pid, int attached);
253 void remove_process (struct process_info *process);
254 struct process_info *find_process_pid (int pid);
255 int have_started_inferiors_p (void);
256 int have_attached_inferiors_p (void);
258 struct thread_info *find_thread_ptid (ptid_t ptid);
260 ptid_t thread_id_to_gdb_id (ptid_t);
261 ptid_t thread_to_gdb_id (struct thread_info *);
262 ptid_t gdb_id_to_thread_id (ptid_t);
263 struct thread_info *gdb_id_to_thread (unsigned int);
264 void clear_inferiors (void);
265 struct inferior_list_entry *find_inferior
266 (struct inferior_list *,
267 int (*func) (struct inferior_list_entry *,
270 struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
272 void *inferior_target_data (struct thread_info *);
273 void set_inferior_target_data (struct thread_info *, void *);
274 void *inferior_regcache_data (struct thread_info *);
275 void set_inferior_regcache_data (struct thread_info *, void *);
276 void add_pid_to_list (struct inferior_list *list, unsigned long pid);
277 int pull_pid_from_list (struct inferior_list *list, unsigned long pid);
279 void loaded_dll (const char *name, CORE_ADDR base_addr);
280 void unloaded_dll (const char *name, CORE_ADDR base_addr);
282 /* Public variables in server.c */
284 extern ptid_t cont_thread;
285 extern ptid_t general_thread;
287 extern int server_waiting;
288 extern int debug_threads;
289 extern int debug_hw_points;
290 extern int pass_signals[];
292 extern jmp_buf toplevel;
294 extern int disable_packet_vCont;
295 extern int disable_packet_Tthread;
296 extern int disable_packet_qC;
297 extern int disable_packet_qfThreadInfo;
300 extern int multi_process;
303 extern int disable_randomization;
306 #include <winsock2.h>
307 typedef SOCKET gdb_fildes_t;
309 typedef int gdb_fildes_t;
312 /* Functions from event-loop.c. */
313 typedef void *gdb_client_data;
314 typedef int (handler_func) (int, gdb_client_data);
315 typedef int (callback_handler_func) (gdb_client_data);
317 extern void delete_file_handler (gdb_fildes_t fd);
318 extern void add_file_handler (gdb_fildes_t fd, handler_func *proc,
319 gdb_client_data client_data);
320 extern int append_callback_event (callback_handler_func *proc,
321 gdb_client_data client_data);
322 extern void delete_callback_event (int id);
324 extern void start_event_loop (void);
326 /* Functions from server.c. */
327 extern int handle_serial_event (int err, gdb_client_data client_data);
328 extern int handle_target_event (int err, gdb_client_data client_data);
330 extern void push_event (ptid_t ptid, struct target_waitstatus *status);
332 /* Functions from hostio.c. */
333 extern int handle_vFile (char *, int, int *);
335 /* Functions from hostio-errno.c. */
336 extern void hostio_last_error_from_errno (char *own_buf);
338 /* From remote-utils.c */
340 extern int remote_debug;
341 extern int noack_mode;
342 extern int transport_is_reliable;
344 int gdb_connected (void);
346 #define STDIO_CONNECTION_NAME "stdio"
347 int remote_connection_is_stdio (void);
349 ptid_t read_ptid (char *buf, char **obuf);
350 char *write_ptid (char *buf, ptid_t ptid);
352 int putpkt (char *buf);
353 int putpkt_binary (char *buf, int len);
354 int putpkt_notif (char *buf);
355 int getpkt (char *buf);
356 void remote_prepare (char *name);
357 void remote_open (char *name);
358 void remote_close (void);
359 void write_ok (char *buf);
360 void write_enn (char *buf);
361 void initialize_async_io (void);
362 void enable_async_io (void);
363 void disable_async_io (void);
364 void check_remote_input_interrupt_request (void);
365 void convert_ascii_to_int (const char *from, unsigned char *to, int n);
366 void convert_int_to_ascii (const unsigned char *from, char *to, int n);
367 void new_thread_notify (int id);
368 void dead_thread_notify (int id);
369 void prepare_resume_reply (char *buf, ptid_t ptid,
370 struct target_waitstatus *status);
372 const char *decode_address_to_semicolon (CORE_ADDR *addrp, const char *start);
373 void decode_address (CORE_ADDR *addrp, const char *start, int len);
374 void decode_m_packet (char *from, CORE_ADDR * mem_addr_ptr,
375 unsigned int *len_ptr);
376 void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr,
377 unsigned int *len_ptr, unsigned char **to_p);
378 int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr,
379 unsigned int *len_ptr, unsigned char **to_p);
380 int decode_xfer_write (char *buf, int packet_len,
381 CORE_ADDR *offset, unsigned int *len,
382 unsigned char *data);
383 int decode_search_memory_packet (const char *buf, int packet_len,
384 CORE_ADDR *start_addrp,
385 CORE_ADDR *search_space_lenp,
387 unsigned int *pattern_lenp);
389 int unhexify (char *bin, const char *hex, int count);
390 int hexify (char *hex, const char *bin, int count);
391 int remote_escape_output (const gdb_byte *buffer, int len,
392 gdb_byte *out_buf, int *out_len,
394 char *unpack_varlen_hex (char *buff, ULONGEST *result);
396 void clear_symbol_cache (struct sym_cache **symcache_p);
397 int look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb);
399 int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc);
401 void monitor_output (const char *msg);
403 /* Functions from utils.c */
404 #include "common-utils.h"
406 void *xmalloc (size_t) ATTR_MALLOC;
407 void *xrealloc (void *, size_t);
408 void *xcalloc (size_t, size_t) ATTR_MALLOC;
409 char *xstrdup (const char *) ATTR_MALLOC;
410 int xsnprintf (char *str, size_t size, const char *format, ...)
411 ATTR_FORMAT (printf, 3, 4);;
412 void freeargv (char **argv);
413 void perror_with_name (const char *string);
414 void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
415 void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
416 void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2);
417 char *paddress (CORE_ADDR addr);
418 char *pulongest (ULONGEST u);
419 char *plongest (LONGEST l);
420 char *phex_nz (ULONGEST l, int sizeof_l);
421 char *pfildes (gdb_fildes_t fd);
423 #include "gdb_assert.h"
425 /* Maximum number of bytes to read/write at once. The value here
426 is chosen to fill up a packet (the headers account for the 32). */
427 #define MAXBUFBYTES(N) (((N)-32)/2)
429 /* Buffer sizes for transferring memory, registers, etc. Set to a constant
430 value to accomodate multiple register formats. This value must be at least
431 as large as the largest register set supported by gdbserver. */
432 #define PBUFSIZ 16384
434 /* Functions from tracepoint.c */
436 /* Size for a small buffer to report problems from the in-process
437 agent back to GDBserver. */
438 #define IPA_BUFSIZ 100
440 int in_process_agent_loaded (void);
442 void initialize_tracepoint (void);
445 extern int disconnected_tracing;
447 void tracepoint_look_up_symbols (void);
449 void stop_tracing (void);
451 int handle_tracepoint_general_set (char *own_buf);
452 int handle_tracepoint_query (char *own_buf);
454 int tracepoint_finished_step (struct thread_info *tinfo, CORE_ADDR stop_pc);
455 int tracepoint_was_hit (struct thread_info *tinfo, CORE_ADDR stop_pc);
457 void release_while_stepping_state_list (struct thread_info *tinfo);
459 extern int current_traceframe;
461 int in_readonly_region (CORE_ADDR addr, ULONGEST length);
462 int traceframe_read_mem (int tfnum, CORE_ADDR addr,
463 unsigned char *buf, ULONGEST length,
465 int fetch_traceframe_registers (int tfnum,
466 struct regcache *regcache,
469 int traceframe_read_sdata (int tfnum, ULONGEST offset,
470 unsigned char *buf, ULONGEST length,
473 int traceframe_read_info (int tfnum, struct buffer *buffer);
475 /* If a thread is determined to be collecting a fast tracepoint, this
476 structure holds the collect status. */
478 struct fast_tpoint_collect_status
480 /* The tracepoint that is presently being collected. */
482 CORE_ADDR tpoint_addr;
484 /* The address range in the jump pad of where the original
485 instruction the tracepoint jump was inserted was relocated
487 CORE_ADDR adjusted_insn_addr;
488 CORE_ADDR adjusted_insn_addr_end;
491 int fast_tracepoint_collecting (CORE_ADDR thread_area,
493 struct fast_tpoint_collect_status *status);
494 void force_unlock_trace_buffer (void);
496 int handle_tracepoint_bkpts (struct thread_info *tinfo, CORE_ADDR stop_pc);
498 #ifdef IN_PROCESS_AGENT
499 void initialize_low_tracepoint (void);
500 void supply_fast_tracepoint_registers (struct regcache *regcache,
501 const unsigned char *regs);
502 void supply_static_tracepoint_registers (struct regcache *regcache,
503 const unsigned char *regs,
505 void set_trampoline_buffer_space (CORE_ADDR begin, CORE_ADDR end,
508 void stop_tracing (void);
510 int claim_trampoline_space (ULONGEST used, CORE_ADDR *trampoline);
511 int have_fast_tracepoint_trampoline_buffer (char *msgbuf);
514 /* Bytecode compilation function vector. */
518 void (*emit_prologue) (void);
519 void (*emit_epilogue) (void);
520 void (*emit_add) (void);
521 void (*emit_sub) (void);
522 void (*emit_mul) (void);
523 void (*emit_lsh) (void);
524 void (*emit_rsh_signed) (void);
525 void (*emit_rsh_unsigned) (void);
526 void (*emit_ext) (int arg);
527 void (*emit_log_not) (void);
528 void (*emit_bit_and) (void);
529 void (*emit_bit_or) (void);
530 void (*emit_bit_xor) (void);
531 void (*emit_bit_not) (void);
532 void (*emit_equal) (void);
533 void (*emit_less_signed) (void);
534 void (*emit_less_unsigned) (void);
535 void (*emit_ref) (int size);
536 void (*emit_if_goto) (int *offset_p, int *size_p);
537 void (*emit_goto) (int *offset_p, int *size_p);
538 void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size);
539 void (*emit_const) (LONGEST num);
540 void (*emit_call) (CORE_ADDR fn);
541 void (*emit_reg) (int reg);
542 void (*emit_pop) (void);
543 void (*emit_stack_flush) (void);
544 void (*emit_zero_ext) (int arg);
545 void (*emit_swap) (void);
546 void (*emit_stack_adjust) (int n);
548 /* Emit code for a generic function that takes one fixed integer
549 argument and returns a 64-bit int (for instance, tsv getter). */
550 void (*emit_int_call_1) (CORE_ADDR fn, int arg1);
552 /* Emit code for a generic function that takes one fixed integer
553 argument and a 64-bit int from the top of the stack, and returns
554 nothing (for instance, tsv setter). */
555 void (*emit_void_call_2) (CORE_ADDR fn, int arg1);
557 /* Emit code specialized for common combinations of compare followed
559 void (*emit_eq_goto) (int *offset_p, int *size_p);
560 void (*emit_ne_goto) (int *offset_p, int *size_p);
561 void (*emit_lt_goto) (int *offset_p, int *size_p);
562 void (*emit_le_goto) (int *offset_p, int *size_p);
563 void (*emit_gt_goto) (int *offset_p, int *size_p);
564 void (*emit_ge_goto) (int *offset_p, int *size_p);
567 /* Returns the address of the get_raw_reg function in the IPA. */
568 CORE_ADDR get_raw_reg_func_addr (void);
570 CORE_ADDR current_insn_ptr;
573 /* Version information, from version.c. */
574 extern const char version[];
575 extern const char host_name[];
577 #endif /* SERVER_H */