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2010-03-29 Stan Shebs <stan@codesourcery.com>

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* tracepoint.h (struct uploaded_string): New struct.
	(struct uploaded_tp): New fields for source strings.
	* breakpoint.c (this_utp, next_cmd): New globals.
	(read_uploaded_action): New function.
	(create_tracepoint_from_upload): Fill in more parts
	of a tracepoint.
	* tracepoint.c (encode_source_string): New function.
	(trace_save): Write out source strings, fix error checks.
	(parse_tracepoint_definition): Add source string parsing.
	* remote.c (PACKET_TracepointSource): New packet type.
	(remote_download_command_source): New function.
	(remote_download_tracepoint): Download source pieces also.
	(_initialize_remote): Add packet config command.

	* gdb.texinfo (Tracepoint Packets): Describe QTDPsrc.
	(General Query Packets): Describe TracepointSource.
This commit is contained in:
Stan Shebs
2010-03-29 23:45:06 +00:00
parent 2aab228b95
commit 409873ef5c
7 changed files with 315 additions and 38 deletions
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75
gdb/breakpoint.c
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@@ -10305,6 +10305,26 @@ ftrace_command (char *arg, int from_tty)
set_tracepoint_count (breakpoint_count);
}
/* Set up a fake reader function that gets command lines from a linked
list that was acquired during tracepoint uploading. */
static struct uploaded_tp *this_utp;
static struct uploaded_string *next_cmd;
static char *
read_uploaded_action (void)
{
char *rslt;
if (!next_cmd)
return NULL;
rslt = next_cmd->str;
next_cmd = next_cmd->next;
return rslt;
}
/* Given information about a tracepoint as recorded on a target (which
can be either a live system or a trace file), attempt to create an
equivalent GDB tracepoint. This is not a reliable process, since
@@ -10314,15 +10334,31 @@ ftrace_command (char *arg, int from_tty)
struct breakpoint *
create_tracepoint_from_upload (struct uploaded_tp *utp)
{
char buf[100];
char *addr_str, small_buf[100];
struct breakpoint *tp;
/* In the absence of a source location, fall back to raw address. */
sprintf (buf, "*%s", paddress (get_current_arch(), utp->addr));
if (utp->at_string)
addr_str = utp->at_string;
else
{
/* In the absence of a source location, fall back to raw
address. Since there is no way to confirm that the address
means the same thing as when the trace was started, warn the
user. */
warning (_("Uploaded tracepoint %d has no source location, using raw address"),
utp->number);
sprintf (small_buf, "*%s", hex_string (utp->addr));
addr_str = small_buf;
}
/* There's not much we can do with a sequence of bytecodes. */
if (utp->cond && !utp->cond_string)
warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"),
utp->number);
if (!create_breakpoint (get_current_arch (),
buf,
NULL, 0, 1 /* parse arg */,
addr_str,
utp->cond_string, -1, 0 /* parse cond/thread */,
0 /* tempflag */,
(utp->type == bp_fast_tracepoint) /* hardwareflag */,
1 /* traceflag */,
@@ -10335,30 +10371,35 @@ create_tracepoint_from_upload (struct uploaded_tp *utp)
set_tracepoint_count (breakpoint_count);
/* Get the tracepoint we just created. */
tp = get_tracepoint (tracepoint_count);
gdb_assert (tp != NULL);
if (utp->pass > 0)
{
sprintf (buf, "%d %d", utp->pass, tp->number);
sprintf (small_buf, "%d %d", utp->pass, tp->number);
trace_pass_command (buf, 0);
trace_pass_command (small_buf, 0);
}
if (utp->cond)
/* If we have uploaded versions of the original commands, set up a
special-purpose "reader" function and call the usual command line
reader, then pass the result to the breakpoint command-setting
function. */
if (utp->cmd_strings)
{
printf_filtered ("Want to restore a condition\n");
}
struct command_line *cmd_list;
if (utp->numactions > 0)
{
printf_filtered ("Want to restore action list\n");
}
this_utp = utp;
next_cmd = utp->cmd_strings;
if (utp->num_step_actions > 0)
{
printf_filtered ("Want to restore action list\n");
cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL);
breakpoint_set_commands (tp, cmd_list);
}
else if (utp->numactions > 0 || utp->num_step_actions > 0)
warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"),
utp->number);
return tp;
}