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 *);
62 #if !HAVE_DECL_VASPRINTF
63 extern int vasprintf(char **strp, const char *fmt, va_list ap);
65 #if !HAVE_DECL_VSNPRINTF
66 int vsnprintf(char *str, size_t size, const char *format, va_list ap);
70 #if defined(__GNUC__) && (__GNUC__ > 2 \
71 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
72 #define ATTR_NORETURN __attribute__ ((noreturn))
74 #define ATTR_NORETURN /* nothing */
79 #if defined(__GNUC__) && (__GNUC__ > 2 \
80 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4))
81 #define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y)))
83 #define ATTR_FORMAT(type, x, y) /* nothing */
88 #if defined(__GNUC__) && (__GNUC__ >= 3)
89 #define ATTR_MALLOC __attribute__ ((__malloc__))
91 #define ATTR_MALLOC /* nothing */
95 /* Define underscore macro, if not available, to be able to use it inside
96 code shared with gdb in common directory. */
98 #define _(String) (String)
101 #ifdef IN_PROCESS_AGENT
104 # define PROG "gdbserver"
107 /* A type used for binary buffers. */
108 typedef unsigned char gdb_byte;
112 #include "xml-utils.h"
113 #include "gdb_locale.h"
115 /* FIXME: This should probably be autoconf'd for. It's an integer type at
116 least the size of a (void *). */
117 typedef long long CORE_ADDR;
119 typedef long long LONGEST;
120 typedef unsigned long long ULONGEST;
122 /* Generic information for tracking a list of ``inferiors'' - threads,
126 struct inferior_list_entry *head;
127 struct inferior_list_entry *tail;
129 struct inferior_list_entry
132 struct inferior_list_entry *next;
139 #include "regcache.h"
140 #include "gdb/signals.h"
141 #include "gdb_signals.h"
143 #include "mem-break.h"
147 struct inferior_list_entry entry;
151 /* The last resume GDB requested on this thread. */
152 enum resume_kind last_resume_kind;
154 /* The last wait status reported for this thread. */
155 struct target_waitstatus last_status;
157 /* Given `while-stepping', a thread may be collecting data for more
158 than one tracepoint simultaneously. E.g.:
160 ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs
162 ff0003 INSN3 <-- TP2, collect $regs
163 ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs
166 Notice that when instruction INSN5 is reached, the while-stepping
167 actions of both TP1 and TP3 are still being collected, and that TP2
168 had been collected meanwhile. The whole range of ff0001-ff0005
169 should be single-stepped, due to at least TP1's while-stepping
170 action covering the whole range.
172 On the other hand, the same tracepoint with a while-stepping action
173 may be hit by more than one thread simultaneously, hence we can't
174 keep the current step count in the tracepoint itself.
176 This is the head of the list of the states of `while-stepping'
177 tracepoint actions this thread is now collecting; NULL if empty.
178 Each item in the list holds the current step of the while-stepping
180 struct wstep_state *while_stepping;
185 struct inferior_list_entry entry;
192 struct raw_breakpoint;
193 struct fast_tracepoint_jump;
194 struct process_info_private;
198 struct inferior_list_entry head;
200 /* Nonzero if this child process was attached rather than
204 /* True if GDB asked us to detach from this process, but we remained
208 /* The symbol cache. */
209 struct sym_cache *symbol_cache;
211 /* The list of memory breakpoints. */
212 struct breakpoint *breakpoints;
214 /* The list of raw memory breakpoints. */
215 struct raw_breakpoint *raw_breakpoints;
217 /* The list of installed fast tracepoints. */
218 struct fast_tracepoint_jump *fast_tracepoint_jumps;
220 /* Private target data. */
221 struct process_info_private *private;
224 /* Return a pointer to the process that corresponds to the current
225 thread (current_inferior). It is an error to call this if there is
226 no current thread selected. */
228 struct process_info *current_process (void);
229 struct process_info *get_thread_process (struct thread_info *);
231 /* Target-specific functions */
233 void initialize_low ();
235 /* From inferiors.c. */
237 extern struct inferior_list all_processes;
238 extern struct inferior_list all_threads;
239 extern struct inferior_list all_dlls;
240 extern int dlls_changed;
241 extern void clear_dlls (void);
243 void add_inferior_to_list (struct inferior_list *list,
244 struct inferior_list_entry *new_inferior);
245 void for_each_inferior (struct inferior_list *list,
246 void (*action) (struct inferior_list_entry *));
248 extern struct thread_info *current_inferior;
249 void remove_inferior (struct inferior_list *list,
250 struct inferior_list_entry *entry);
251 void remove_thread (struct thread_info *thread);
252 void add_thread (ptid_t ptid, void *target_data);
254 struct process_info *add_process (int pid, int attached);
255 void remove_process (struct process_info *process);
256 struct process_info *find_process_pid (int pid);
257 int have_started_inferiors_p (void);
258 int have_attached_inferiors_p (void);
260 struct thread_info *find_thread_ptid (ptid_t ptid);
262 ptid_t thread_id_to_gdb_id (ptid_t);
263 ptid_t thread_to_gdb_id (struct thread_info *);
264 ptid_t gdb_id_to_thread_id (ptid_t);
265 struct thread_info *gdb_id_to_thread (unsigned int);
266 void clear_inferiors (void);
267 struct inferior_list_entry *find_inferior
268 (struct inferior_list *,
269 int (*func) (struct inferior_list_entry *,
272 struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
274 void *inferior_target_data (struct thread_info *);
275 void set_inferior_target_data (struct thread_info *, void *);
276 void *inferior_regcache_data (struct thread_info *);
277 void set_inferior_regcache_data (struct thread_info *, void *);
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[];
291 extern int program_signals[];
292 extern int program_signals_p;
294 extern jmp_buf toplevel;
296 extern int disable_packet_vCont;
297 extern int disable_packet_Tthread;
298 extern int disable_packet_qC;
299 extern int disable_packet_qfThreadInfo;
302 extern int multi_process;
305 extern int disable_randomization;
308 #include <winsock2.h>
309 typedef SOCKET gdb_fildes_t;
311 typedef int gdb_fildes_t;
314 /* Functions from event-loop.c. */
315 typedef void *gdb_client_data;
316 typedef int (handler_func) (int, gdb_client_data);
317 typedef int (callback_handler_func) (gdb_client_data);
319 extern void delete_file_handler (gdb_fildes_t fd);
320 extern void add_file_handler (gdb_fildes_t fd, handler_func *proc,
321 gdb_client_data client_data);
322 extern int append_callback_event (callback_handler_func *proc,
323 gdb_client_data client_data);
324 extern void delete_callback_event (int id);
326 extern void start_event_loop (void);
328 /* Functions from server.c. */
329 extern int handle_serial_event (int err, gdb_client_data client_data);
330 extern int handle_target_event (int err, gdb_client_data client_data);
332 extern void push_event (ptid_t ptid, struct target_waitstatus *status);
334 /* Functions from hostio.c. */
335 extern int handle_vFile (char *, int, int *);
337 /* Functions from hostio-errno.c. */
338 extern void hostio_last_error_from_errno (char *own_buf);
340 /* From remote-utils.c */
342 extern int remote_debug;
343 extern int noack_mode;
344 extern int transport_is_reliable;
346 int gdb_connected (void);
348 #define STDIO_CONNECTION_NAME "stdio"
349 int remote_connection_is_stdio (void);
351 ptid_t read_ptid (char *buf, char **obuf);
352 char *write_ptid (char *buf, ptid_t ptid);
354 int putpkt (char *buf);
355 int putpkt_binary (char *buf, int len);
356 int putpkt_notif (char *buf);
357 int getpkt (char *buf);
358 void remote_prepare (char *name);
359 void remote_open (char *name);
360 void remote_close (void);
361 void write_ok (char *buf);
362 void write_enn (char *buf);
363 void initialize_async_io (void);
364 void enable_async_io (void);
365 void disable_async_io (void);
366 void check_remote_input_interrupt_request (void);
367 void convert_ascii_to_int (const char *from, unsigned char *to, int n);
368 void convert_int_to_ascii (const unsigned char *from, char *to, int n);
369 void new_thread_notify (int id);
370 void dead_thread_notify (int id);
371 void prepare_resume_reply (char *buf, ptid_t ptid,
372 struct target_waitstatus *status);
374 const char *decode_address_to_semicolon (CORE_ADDR *addrp, const char *start);
375 void decode_address (CORE_ADDR *addrp, const char *start, int len);
376 void decode_m_packet (char *from, CORE_ADDR * mem_addr_ptr,
377 unsigned int *len_ptr);
378 void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr,
379 unsigned int *len_ptr, unsigned char **to_p);
380 int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr,
381 unsigned int *len_ptr, unsigned char **to_p);
382 int decode_xfer_write (char *buf, int packet_len,
383 CORE_ADDR *offset, unsigned int *len,
384 unsigned char *data);
385 int decode_search_memory_packet (const char *buf, int packet_len,
386 CORE_ADDR *start_addrp,
387 CORE_ADDR *search_space_lenp,
389 unsigned int *pattern_lenp);
391 int unhexify (char *bin, const char *hex, int count);
392 int hexify (char *hex, const char *bin, int count);
393 int remote_escape_output (const gdb_byte *buffer, int len,
394 gdb_byte *out_buf, int *out_len,
396 char *unpack_varlen_hex (char *buff, ULONGEST *result);
398 void clear_symbol_cache (struct sym_cache **symcache_p);
399 int look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb);
401 int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc);
403 void monitor_output (const char *msg);
405 /* Functions from utils.c */
406 #include "common-utils.h"
408 void *xmalloc (size_t) ATTR_MALLOC;
409 void *xrealloc (void *, size_t);
410 void *xcalloc (size_t, size_t) ATTR_MALLOC;
411 char *xstrdup (const char *) ATTR_MALLOC;
412 int xsnprintf (char *str, size_t size, const char *format, ...)
413 ATTR_FORMAT (printf, 3, 4);;
414 void freeargv (char **argv);
415 void perror_with_name (const char *string);
416 void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
417 void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
418 void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2);
419 char *paddress (CORE_ADDR addr);
420 char *pulongest (ULONGEST u);
421 char *plongest (LONGEST l);
422 char *phex_nz (ULONGEST l, int sizeof_l);
423 char *pfildes (gdb_fildes_t fd);
425 #include "gdb_assert.h"
427 /* Maximum number of bytes to read/write at once. The value here
428 is chosen to fill up a packet (the headers account for the 32). */
429 #define MAXBUFBYTES(N) (((N)-32)/2)
431 /* Buffer sizes for transferring memory, registers, etc. Set to a constant
432 value to accomodate multiple register formats. This value must be at least
433 as large as the largest register set supported by gdbserver. */
434 #define PBUFSIZ 16384
436 /* Functions from tracepoint.c */
438 /* Size for a small buffer to report problems from the in-process
439 agent back to GDBserver. */
440 #define IPA_BUFSIZ 100
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);
516 /* Do memory copies for bytecodes. */
517 /* Do the recording of memory blocks for actions and bytecodes. */
519 int agent_mem_read (struct traceframe *tframe,
520 unsigned char *to, CORE_ADDR from,
523 LONGEST agent_get_trace_state_variable_value (int num);
524 void agent_set_trace_state_variable_value (int num, LONGEST val);
526 /* Record the value of a trace state variable. */
528 int agent_tsv_read (struct traceframe *tframe, int n);
529 int agent_mem_read_string (struct traceframe *tframe,
534 /* Bytecode compilation function vector. */
538 void (*emit_prologue) (void);
539 void (*emit_epilogue) (void);
540 void (*emit_add) (void);
541 void (*emit_sub) (void);
542 void (*emit_mul) (void);
543 void (*emit_lsh) (void);
544 void (*emit_rsh_signed) (void);
545 void (*emit_rsh_unsigned) (void);
546 void (*emit_ext) (int arg);
547 void (*emit_log_not) (void);
548 void (*emit_bit_and) (void);
549 void (*emit_bit_or) (void);
550 void (*emit_bit_xor) (void);
551 void (*emit_bit_not) (void);
552 void (*emit_equal) (void);
553 void (*emit_less_signed) (void);
554 void (*emit_less_unsigned) (void);
555 void (*emit_ref) (int size);
556 void (*emit_if_goto) (int *offset_p, int *size_p);
557 void (*emit_goto) (int *offset_p, int *size_p);
558 void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size);
559 void (*emit_const) (LONGEST num);
560 void (*emit_call) (CORE_ADDR fn);
561 void (*emit_reg) (int reg);
562 void (*emit_pop) (void);
563 void (*emit_stack_flush) (void);
564 void (*emit_zero_ext) (int arg);
565 void (*emit_swap) (void);
566 void (*emit_stack_adjust) (int n);
568 /* Emit code for a generic function that takes one fixed integer
569 argument and returns a 64-bit int (for instance, tsv getter). */
570 void (*emit_int_call_1) (CORE_ADDR fn, int arg1);
572 /* Emit code for a generic function that takes one fixed integer
573 argument and a 64-bit int from the top of the stack, and returns
574 nothing (for instance, tsv setter). */
575 void (*emit_void_call_2) (CORE_ADDR fn, int arg1);
577 /* Emit code specialized for common combinations of compare followed
579 void (*emit_eq_goto) (int *offset_p, int *size_p);
580 void (*emit_ne_goto) (int *offset_p, int *size_p);
581 void (*emit_lt_goto) (int *offset_p, int *size_p);
582 void (*emit_le_goto) (int *offset_p, int *size_p);
583 void (*emit_gt_goto) (int *offset_p, int *size_p);
584 void (*emit_ge_goto) (int *offset_p, int *size_p);
587 /* Returns the address of the get_raw_reg function in the IPA. */
588 CORE_ADDR get_raw_reg_func_addr (void);
589 /* Returns the address of the get_trace_state_variable_value
590 function in the IPA. */
591 CORE_ADDR get_get_tsv_func_addr (void);
592 /* Returns the address of the set_trace_state_variable_value
593 function in the IPA. */
594 CORE_ADDR get_set_tsv_func_addr (void);
596 CORE_ADDR current_insn_ptr;
599 /* Version information, from version.c. */
600 extern const char version[];
601 extern const char host_name[];
603 #endif /* SERVER_H */