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Conditional tracepoints.
	* ax-gdb.h (gen_eval_for_expr): Declare.
	* ax-gdb.c (gen_expr): Generate bytecodes for BINOP_EQUAL
	and other comparisons.
	(gen_eval_for_expr): New function.
	(agent_eval_command): New maintenance command.
	(_initialize_ax_gdb): Define the command.
	* remote.c (struct remote_state): New field cond_tracepoints.
	(PACKET_ConditionalTracepoints): New packet config type.
	(remote_cond_tracepoint_feature): New function.
	(remote_protocol_features): Add ConditionalTracepoints.
	(remote_supports_cond_tracepoints): New function.
	(_initialize_remote): Add ConditionalTracepoints.
	* tracepoint.c (download_tracepoint): Add conditional.
	* NEWS: Mention conditional tracepoints.

	gdb/doc/
	* gdb.texinfo (Tracepoint Conditions): New section.
	(General Query Packets): Describe ConditionalTracepoints.
	(Tracepoint Packets): Describe condition field.
	(Maintenance Commands): Describe maint agent-eval.
	* agentexpr.texi (Using Agent Expressions): Mention eval usage.

	gdb/testsuite/
	* gdb.trace/tracecmd.exp: Add basic test of tracepoint conditions.
This commit is contained in:
Stan Shebs
2009-07-14 21:40:34 +00:00
parent f662c3bce4
commit 782b2b0784
11 changed files with 292 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
gdb/remote.c
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@@ -294,6 +294,9 @@ struct remote_state
/* True if the stub reports support for vCont;t. */
int support_vCont_t;
/* True if the stub reports support for conditional tracepoints. */
int cond_tracepoints;
};
/* Returns true if the multi-process extensions are in effect. */
@@ -993,6 +996,7 @@ enum {
PACKET_qXfer_siginfo_read,
PACKET_qXfer_siginfo_write,
PACKET_qAttached,
PACKET_ConditionalTracepoints,
PACKET_MAX
};
@@ -3015,6 +3019,15 @@ remote_non_stop_feature (const struct protocol_feature *feature,
rs->non_stop_aware = (support == PACKET_ENABLE);
}
static void
remote_cond_tracepoint_feature (const struct protocol_feature *feature,
enum packet_support support,
const char *value)
{
struct remote_state *rs = get_remote_state ();
rs->cond_tracepoints = (support == PACKET_ENABLE);
}
static struct protocol_feature remote_protocol_features[] = {
{ "PacketSize", PACKET_DISABLE, remote_packet_size, -1 },
{ "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet,
@@ -3041,6 +3054,8 @@ static struct protocol_feature remote_protocol_features[] = {
PACKET_qXfer_siginfo_read },
{ "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet,
PACKET_qXfer_siginfo_write },
{ "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature,
PACKET_ConditionalTracepoints },
};
static void
@@ -8740,6 +8755,13 @@ remote_supports_multi_process (void)
return remote_multi_process_p (rs);
}
int
remote_supports_cond_tracepoints (void)
{
struct remote_state *rs = get_remote_state ();
return rs->cond_tracepoints;
}
static void
init_remote_ops (void)
{
@@ -9183,6 +9205,9 @@ Show the maximum size of the address (in bits) in a memory packet."), NULL,
add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached],
"qAttached", "query-attached", 0);
add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints],
"ConditionalTracepoints", "conditional-tracepoints", 0);
/* Keep the old ``set remote Z-packet ...'' working. Each individual
Z sub-packet has its own set and show commands, but users may
have sets to this variable in their .gdbinit files (or in their