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* target.c (target_read_live_memory): New function.
	(memory_xfer_live_readonly_partial): New.
	(memory_xfer_partial): If reading from a traceframe, fallback to
	reading unavailable read-only memory from read-only regions of
	live target memory.
	* tracepoint.c (disconnect_tracing): Adjust.
	(set_current_traceframe): New, factored out from
	set_traceframe_number.
	(set_traceframe_number): Reimplement to only change the traceframe
	number on the GDB side.
	(do_restore_current_traceframe_cleanup): Adjust.
	(make_cleanup_restore_traceframe_number): New.
	(cur_traceframe_number): New global.
	(tfile_open): Set cur_traceframe_number to no traceframe.
	(set_tfile_traceframe): New function.
	(tfile_trace_find): If looking up a traceframe using any method
	other than by number, make sure the current tfile traceframe
	matches gdb's current traceframe.  Update the current tfile
	traceframe if the lookup succeeded.
	(tfile_fetch_registers, tfile_xfer_partial)
	(tfile_get_trace_state_variable_value): Make sure the remote
	traceframe matches gdb's current traceframe.
	* remote.c (remote_traceframe_number): New global.
	(remote_open_1): Set it to -1.
	(set_remote_traceframe): New function.
	(remote_fetch_registers, remote_store_registers)
	(remote_xfer_memory, remote_xfer_partial)
	(remote_get_trace_state_variable_value): Make sure the remote
	traceframe matches gdb's current traceframe.
	(remote_trace_find): If looking up a traceframe using any method
	other than by number, make sure the current remote traceframe
	matches gdb's current traceframe.  Update the current remote
	traceframe if the lookup succeeded.
	* infrun.c (fetch_inferior_event): Adjust.
	* tracepoint.h (set_current_traceframe): Declare.
	(get_traceframe_number, set_traceframe_number): Add describing
	comments.
This commit is contained in:
Pedro Alves
2011-02-14 11:22:29 +00:00
parent e6ca34fcfb
commit e6e4e7014d
6 changed files with 287 additions and 7 deletions
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19
gdb/tracepoint.h
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@@ -192,9 +192,24 @@ extern void release_static_tracepoint_marker (struct static_tracepoint_marker *)
extern void (*deprecated_trace_find_hook) (char *arg, int from_tty);
extern void (*deprecated_trace_start_stop_hook) (int start, int from_tty);
int get_traceframe_number (void);
void set_traceframe_number (int);
/* Returns the current traceframe number. */
extern int get_traceframe_number (void);
/* Make the traceframe NUM be the current GDB trace frame number, and
do nothing more. In particular, this does not flush the
register/frame caches or notify the target about the trace frame
change, so that is can be used when we need to momentarily access
live memory. Targets lazily switch their current traceframe to
match GDB's traceframe number, at the appropriate times. */
extern void set_traceframe_number (int);
/* Make the traceframe NUM be the current trace frame, all the way to
the target, and flushes all global state (register/frame caches,
etc.). */
extern void set_current_traceframe (int num);
struct cleanup *make_cleanup_restore_current_traceframe (void);
struct cleanup *make_cleanup_restore_traceframe_number (void);
void free_actions (struct breakpoint *);
extern void validate_actionline (char **, struct breakpoint *);