1 /* Data structures associated with tracepoints in GDB.
2 Copyright (C) 1997-2017 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #if !defined (TRACEPOINT_H)
20 #define TRACEPOINT_H 1
22 #include "breakpoint.h"
30 /* An object describing the contents of a traceframe. */
32 struct traceframe_info
34 /* Collected memory. */
35 VEC(mem_range_s) *memory;
37 /* Collected trace state variables. */
41 /* A trace state variable is a value managed by a target being
42 traced. A trace state variable (or tsv for short) can be accessed
43 and assigned to by tracepoint actions and conditionals, but is not
44 part of the program being traced, and it doesn't have to be
45 collected. Effectively the variables are scratch space for
48 struct trace_state_variable
50 /* The variable's name. The user has to prefix with a dollar sign,
51 but we don't store that internally. */
54 /* An id number assigned by GDB, and transmitted to targets. */
57 /* The initial value of a variable is a 64-bit signed integer. */
58 LONGEST initial_value;
60 /* 1 if the value is known, else 0. The value is known during a
61 trace run, or in tfind mode if the variable was collected into
62 the current trace frame. */
65 /* The value of a variable is a 64-bit signed integer. */
68 /* This is true for variables that are predefined and built into
73 /* The trace status encompasses various info about the general state
74 of the tracing run. */
76 enum trace_stop_reason
78 trace_stop_reason_unknown,
89 /* If the status is coming from a file rather than a live target,
90 this points at the file's filename. Otherwise, this is NULL. */
93 /* This is true if the value of the running field is known. */
96 /* This is true when the trace experiment is actually running. */
99 enum trace_stop_reason stop_reason;
101 /* If stop_reason is tracepoint_passcount or tracepoint_error, this
102 is the (on-target) number of the tracepoint which caused the
104 int stopping_tracepoint;
106 /* If stop_reason is tstop_command or tracepoint_error, this is an
107 arbitrary string that may describe the reason for the stop in
112 /* Number of traceframes currently in the buffer. */
114 int traceframe_count;
116 /* Number of traceframes created since start of run. */
118 int traceframes_created;
120 /* Total size of the target's trace buffer. */
124 /* Unused bytes left in the target's trace buffer. */
128 /* 1 if the target will continue tracing after disconnection, else
129 0. If the target does not report a value, assume 0. */
131 int disconnected_tracing;
133 /* 1 if the target is using a circular trace buffer, else 0. If the
134 target does not report a value, assume 0. */
138 /* The "name" of the person running the trace. This is an
143 /* "Notes" about the trace. This is an arbitrary string not
144 interpreted by GDBserver in any special way. */
148 /* The calendar times at which the trace run started and stopped,
149 both expressed in microseconds of Unix time. */
155 struct trace_status *current_trace_status (void);
157 extern char *default_collect;
159 extern int trace_regblock_size;
161 extern const char *stop_reason_names[];
163 /* Struct to collect random info about tracepoints on the target. */
175 /* String that is the encoded form of the tracepoint's condition. */
178 /* Vectors of strings that are the encoded forms of a tracepoint's
180 VEC(char_ptr) *actions;
181 VEC(char_ptr) *step_actions;
183 /* The original string defining the location of the tracepoint. */
186 /* The original string defining the tracepoint's condition. */
189 /* List of original strings defining the tracepoint's actions. */
190 VEC(char_ptr) *cmd_strings;
192 /* The tracepoint's current hit count. */
195 /* The tracepoint's current traceframe usage. */
196 ULONGEST traceframe_usage;
198 struct uploaded_tp *next;
201 /* Struct recording info about trace state variables on the target. */
207 LONGEST initial_value;
209 struct uploaded_tsv *next;
212 /* Struct recording info about a target static tracepoint marker. */
214 struct static_tracepoint_marker
216 struct gdbarch *gdbarch;
219 /* The string ID of the marker. */
222 /* Extra target reported info associated with the marker. */
228 memrange (int type_, bfd_signed_vma start_, bfd_signed_vma end_)
229 : type (type_), start (start_), end (end_)
235 /* memrange_absolute for absolute memory range, else basereg
238 bfd_signed_vma start;
242 class collection_list
247 void add_wholly_collected (const char *print_name);
249 void append_exp (struct expression *exp);
251 /* Add AEXPR to the list, taking ownership. */
252 void add_aexpr (agent_expr_up aexpr);
254 void add_register (unsigned int regno);
255 void add_memrange (struct gdbarch *gdbarch,
256 int type, bfd_signed_vma base,
258 void collect_symbol (struct symbol *sym,
259 struct gdbarch *gdbarch,
260 long frame_regno, long frame_offset,
264 void add_local_symbols (struct gdbarch *gdbarch, CORE_ADDR pc,
265 long frame_regno, long frame_offset, int type,
267 void add_static_trace_data ();
273 const std::vector<std::string> &wholly_collected ()
274 { return m_wholly_collected; }
276 const std::vector<std::string> &computed ()
277 { return m_computed; }
280 /* room for up to 256 regs */
281 unsigned char m_regs_mask[32];
283 std::vector<memrange> m_memranges;
285 std::vector<agent_expr_up> m_aexprs;
287 /* True is the user requested a collection of "$_sdata", "static
291 /* A set of names of wholly collected objects. */
292 std::vector<std::string> m_wholly_collected;
293 /* A set of computed expressions. */
294 std::vector<std::string> m_computed;
297 extern void parse_static_tracepoint_marker_definition
298 (char *line, char **pp,
299 struct static_tracepoint_marker *marker);
300 extern void release_static_tracepoint_marker (struct static_tracepoint_marker *);
301 extern void free_current_marker (void *arg);
303 /* A hook used to notify the UI of tracepoint operations. */
305 extern void (*deprecated_trace_find_hook) (char *arg, int from_tty);
306 extern void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
308 /* Returns the current traceframe number. */
309 extern int get_traceframe_number (void);
311 /* Returns the tracepoint number for current traceframe. */
312 extern int get_tracepoint_number (void);
314 /* Make the traceframe NUM be the current trace frame, all the way to
315 the target, and flushes all global state (register/frame caches,
317 extern void set_current_traceframe (int num);
319 struct cleanup *make_cleanup_restore_current_traceframe (void);
321 void free_actions (struct breakpoint *);
323 extern const char *decode_agent_options (const char *exp, int *trace_string);
325 extern void encode_actions (struct bp_location *tloc,
326 struct collection_list *tracepoint_list,
327 struct collection_list *stepping_list);
329 extern void encode_actions_rsp (struct bp_location *tloc,
330 char ***tdp_actions, char ***stepping_actions);
332 extern void validate_actionline (const char *, struct breakpoint *);
333 extern void validate_trace_state_variable_name (const char *name);
335 extern struct trace_state_variable *find_trace_state_variable (const char *name);
336 extern struct trace_state_variable *
337 find_trace_state_variable_by_number (int number);
339 extern struct trace_state_variable *create_trace_state_variable (const char *name);
341 extern int encode_source_string (int num, ULONGEST addr,
342 const char *srctype, const char *src,
343 char *buf, int buf_size);
345 extern void parse_trace_status (char *line, struct trace_status *ts);
347 extern void parse_tracepoint_status (char *p, struct breakpoint *tp,
348 struct uploaded_tp *utp);
350 extern void parse_tracepoint_definition (char *line,
351 struct uploaded_tp **utpp);
352 extern void parse_tsv_definition (char *line, struct uploaded_tsv **utsvp);
354 extern struct uploaded_tp *get_uploaded_tp (int num, ULONGEST addr,
355 struct uploaded_tp **utpp);
356 extern void free_uploaded_tps (struct uploaded_tp **utpp);
358 extern struct uploaded_tsv *get_uploaded_tsv (int num,
359 struct uploaded_tsv **utsvp);
360 extern void free_uploaded_tsvs (struct uploaded_tsv **utsvp);
361 extern struct tracepoint *create_tracepoint_from_upload (struct uploaded_tp *utp);
362 extern void merge_uploaded_tracepoints (struct uploaded_tp **utpp);
363 extern void merge_uploaded_trace_state_variables (struct uploaded_tsv **utsvp);
365 extern void query_if_trace_running (int from_tty);
366 extern void disconnect_tracing (void);
367 extern void trace_reset_local_state (void);
369 extern void check_trace_running (struct trace_status *);
371 extern void start_tracing (char *notes);
372 extern void stop_tracing (char *notes);
374 extern void trace_status_mi (int on_stop);
376 extern void tvariables_info_1 (void);
377 extern void save_trace_state_variables (struct ui_file *fp);
379 extern void tfind_1 (enum trace_find_type type, int num,
380 CORE_ADDR addr1, CORE_ADDR addr2,
383 extern void trace_save_tfile (const char *filename,
384 int target_does_save);
385 extern void trace_save_ctf (const char *dirname,
386 int target_does_save);
388 extern struct traceframe_info *parse_traceframe_info (const char *tframe_info);
390 extern int traceframe_available_memory (VEC(mem_range_s) **result,
391 CORE_ADDR memaddr, ULONGEST len);
393 extern struct traceframe_info *get_traceframe_info (void);
395 extern struct bp_location *get_traceframe_location (int *stepping_frame_p);
397 #endif /* TRACEPOINT_H */