Add trace file support.

	* tracepoint.h (enum trace_stop_reason): New enum.
	(struct trace_status): New struct.
	(parse_trace_status): Declare.
	(struct uploaded_tp): Move here from remote.c,
	add fields for actions.
	(struct uploaded_tsv): New struct.
	* tracepoint.c (tfile_ops): New target vector.
	(trace_fd): New global.
	(tfile_open): New function.
	(tfile_close): New function.
	(tfile_files_info): New function.
	(tfile_get_trace_status): New function.
	(tfile_get_traceframe_address): New function.
	(tfile_trace_find): New function.
	(tfile_fetch_registers): New function.
	(tfile_xfer_partial): New function.
	(tfile_get_trace_state_variable_value): New function.
	(init_tfile_ops): New function.
	(_initialize_tracepoint): Call it, add tfile target.
	(trace_status): New global.
	(current_trace_status): New function.
	(trace_running_p): Remove, change all users to get from
	current_trace_status()->running.
	(get_trace_status): Remove.
	(trace_status_command): Call target_get_trace_status directly,
	report more detail including tracing stop reasons.
	(trace_find_command): Always allow tfind on a file.
	(trace_find_pc_command): Ditto.
	(trace_find_tracepoint_command): Ditto.
	(trace_find_line_command): Ditto.
	(trace_find_range_command): Ditto.
	(trace_find_outside_command): Ditto.
	(trace_frames_offset, cur_offset): Declare as off_t.
	(trace_regblock_size): Rename from reg_size, update users.
	(parse_trace_status): New function.
	(tfile_interp_line): New function.
	(disconnect_or_stop_tracing): Ensure current trace
	status before asking what to do.
	(stop_reason_names): New global.
	(trace_save_command): New command.
	(get_uploaded_tp): Move here from remote.c.
	(find_matching_tracepoint): Ditto.
	(merge_uploaded_tracepoints): New function.
	(parse_trace_status): Use stop_reason_names.
	(_initialize_tracepoint): Define tsave command.
	* target.h (target_ops): New fields to_save_trace_data,
	to_upload_tracepoints, to_upload_trace_state_variables,
	to_get_raw_trace_data, change to_get_trace_status
	to take a pointer to a status struct.
	(target_save_trace_data): New macro.
	(target_upload_tracepoints): New macro.
	(target_upload_trace_state_variables): New macro.
	(target_get_raw_trace_data): New macro.
	* target.c (update_current_target): Add new methods, change
	signature of to_get_trace_status.
	* remote.c (hex2bin): Make globally visible.
	(bin2hex): Ditto.
	(remote_download_trace_state_variable): Download name also.
	(remote_get_trace_status): Update parameter, use
	parse_trace_status.
	(remote_save_trace_data): New function.
	(remote_upload_tracepoints): New function.
	(remote_upload_trace_state_variables): New function.
	(remote_get_raw_trace_data): New function.
	(remote_start_remote): Use them.
	(_initialize_remote_ops): Add operations.
	* ax-gdb.c: Include breakpoint.h.
	* breakpoint.c (create_tracepoint_from_upload): Use
	break_command_really, return tracepoint, warn about unimplemented
	parts.
	* NEWS: Mention trace file addition.

	* gdb.texinfo (Trace Files): New section.
	(Tracepoint Packets): Document QTSave and qTBuffer.
	(Trace File Format): New appendix.

	* generic/gdbtk-bp.c (gdb_trace_status): Use current_trace_status.

	* gdb.trace/tfile.c: New file.
	* gdb.trace/tfile.exp: New file.

1 files changed, 79 insertions, 1 deletions

diff --git a/gdb/tracepoint.h b/gdb/tracepoint.h
index 5d2862a7b66..b50266a7912 100644
--- a/gdb/tracepoint.h
+++ b/gdb/tracepoint.h
@@ -61,12 +61,79 @@ struct trace_state_variable
 
     /* The value of a variable is a 64-bit signed integer.  */
     LONGEST value;
+
+    /* This is true for variables that are predefined and built into
+       the target.  */
+    int builtin;
+   };
+
+/* The trace status encompasses various info about the general state
+   of the tracing run.  */
+
+enum trace_stop_reason
+  {
+    trace_stop_reason_unknown,
+    trace_never_run,
+    tstop_command,
+    trace_buffer_full,
+    trace_disconnected,
+    tracepoint_passcount
   };
 
-extern unsigned long trace_running_p;
+struct trace_status
+{
+  /* This is true if the status is coming from a file rather
+     than a live target.  */
+  int from_file;
+
+  /* This is true if the value of the running field is known.  */
+  int running_known;
+
+  int running;
+
+  enum trace_stop_reason stop_reason;
+
+  int stopping_tracepoint;
+
+  int traceframe_count;
+
+  size_t buffer_size;
+
+  size_t buffer_free;
+};
+
+struct trace_status *current_trace_status (void);
 
 extern char *default_collect;
 
+/* Struct to collect random info about tracepoints on the target.  */
+
+struct uploaded_tp {
+  int number;
+  enum bptype type;
+  ULONGEST addr;
+  int enabled;
+  int step;
+  int pass;
+  int orig_size;
+  char *cond;
+  int numactions;
+  char *actions[100];
+  int num_step_actions;
+  char *step_actions[100];
+  struct uploaded_tp *next;
+};
+
+/* Struct recording info about trace state variables on the target.  */
+
+struct uploaded_tsv {
+  const char *name;
+  int number;
+  LONGEST initial_value;
+  int builtin;
+  struct uploaded_tsv *next;
+};
+
 /* A hook used to notify the UI of tracepoint operations.  */
 
 extern void (*deprecated_trace_find_hook) (char *arg, int from_tty);
@@ -81,4 +148,15 @@ extern void while_stepping_pseudocommand (char *args, int from_tty);
 
 extern struct trace_state_variable *find_trace_state_variable (const char *name);
 
+extern void parse_trace_status (char *line, struct trace_status *ts);
+
+extern void parse_tracepoint_definition (char *line, struct uploaded_tp **utpp);
+extern void parse_tsv_definition (char *line, struct uploaded_tsv **utsvp);
+
+extern struct uploaded_tp *get_uploaded_tp (int num, ULONGEST addr,
+					    struct uploaded_tp **utpp);
+extern struct breakpoint *create_tracepoint_from_upload (struct uploaded_tp *utp);
+extern void merge_uploaded_tracepoints (struct uploaded_tp **utpp);
+extern void merge_uploaded_trace_state_variables (struct uploaded_tsv **utsvp);
+
 #endif	/* TRACEPOINT_H */