Static tracepoints support, and UST integration.

gdb/gdbserver/
	* configure.ac: Handle --with-ust.  substitute ustlibs and ustinc.
	* mem-break.c (uninsert_all_breakpoints)
	(reinsert_all_breakpoints): New.
	* mem-break.h (reinsert_all_breakpoints, uninsert_all_breakpoints):
	* tracepoint.c (ust_loaded, helper_thread_id, cmd_buf): New.
	(gdb_agent_ust_loaded, helper_thread_id)
	(gdb_agent_helper_thread_id): New macros.
	(struct ipa_sym_addresses): Add addr_ust_loaded,
	addr_helper_thread_id, addr_cmd_buf.
	(symbol_list): Add ust_loaded, helper_thread_id, cmd_buf.
	(in_process_agent_loaded_ust): New.
	(write_e_ust_not_loaded): New.
	(maybe_write_ipa_ust_not_loaded): New.
	(struct collect_static_trace_data_action): New.
	(enum tracepoint_type) <static_tracepoint>: New.
	(struct tracepoint) <handle>: Mention static tracepoints.
	(struct static_tracepoint_ctx): New.
	(CMD_BUF_SIZE): New.
	(add_tracepoint_action): Handle static tracepoint actions.
	(unprobe_marker_at): New.
	(clear_installed_tracepoints): Handle static tracepoints.
	(cmd_qtdp): Handle static tracepoints.
	(probe_marker_at): New.
	(cmd_qtstart): Handle static tracepoints.
	(response_tracepoint): Handle static tracepoints.
	(cmd_qtfstm, cmd_qtsstm, cmd_qtstmat): New.
	(handle_tracepoint_query): Handle qTfSTM, qTsSTM and qTSTMat.
	(get_context_regcache): Handle static tracepoints.
	(do_action_at_tracepoint): Handle static tracepoint actions.
	(traceframe_find_block_type): Handle static trace data blocks.
	(traceframe_read_sdata): New.
	(download_tracepoints): Download static tracepoint actions.
	[HAVE_UST] Include ust/ust.h, dlfcn.h, sys/socket.h, and sys/un.h.
	(GDB_PROBE_NAME): New.
	(ust_ops): New.
	(GET_UST_SYM): New.
	(USTF): New.
	(dlsym_ust): New.
	(ust_marker_to_static_tracepoint): New.
	(gdb_probe): New.
	(collect_ust_data_at_tracepoint): New.
	(gdb_ust_probe): New.
	(UNIX_PATH_MAX, SOCK_DIR): New.
	(gdb_ust_connect_sync_socket): New.
	(resume_thread, stop_thread): New.
	(run_inferior_command): New.
	(init_named_socket): New.
	(gdb_ust_socket_init): New.
	(cstr_to_hexstr): New.
	(next_st): New.
	(first_marker, next_marker): New.
	(response_ust_marker): New.
	(cmd_qtfstm, cmd_qtsstm): New.
	(unprobe_marker_at, probe_marker_at): New.
	(cmd_qtstmat, gdb_ust_thread): New.
	(gdb_ust_init): New.
	(initialize_tracepoint_ftlib): Call gdb_ust_init.
	* linux-amd64-ipa.c [HAVE_UST]: Include ust/processor.h
	(ST_REGENTRY): New.
	(x86_64_st_collect_regmap): New.
	(X86_64_NUM_ST_COLLECT_GREGS): New.
	(AMD64_RIP_REGNUM): New.
	(supply_static_tracepoint_registers): New.
	* linux-i386-ipa.c [HAVE_UST]: Include ust/processor.h
	(ST_REGENTRY): New.
	(i386_st_collect_regmap): New.
	(i386_NUM_ST_COLLECT_GREGS): New.
	(supply_static_tracepoint_registers): New.
	* server.c (handle_query): Handle qXfer:statictrace:read.
	<qSupported>: Report support for StaticTracepoints, and
	qXfer:statictrace:read features.
	* server.h (traceframe_read_sdata)
	(supply_static_tracepoint_registers): Declare.
	* remote-utils.c (convert_int_to_ascii, hexchars, ishex, tohex)
	(unpack_varlen_hex): Include in IPA build.
	* Makefile.in (ustlibs, ustinc): New.
	(IPA_OBJS): Add remote-utils-ipa.o.
	($(IPA_LIB)): Link -ldl and -lpthread.
	(UST_CFLAGS): New.
	(IPAGENT_CFLAGS): Add UST_CFLAGS.
	* config.in, configure: Regenerate.

	gdb/
	* NEWS: Mention new support for static tracepoints.
	(New packets): Mention qTfSTM, qTsSTM, qTSTMat and
	qXfer:statictrace:read.
	(New features in the GDB remote stub, GDBserver): Mention static
	tracepoints support using an UST based backend.
	(New commands): Mention "info static-tracepoint-markers" and
	"strace".
	* breakpoint.c (is_marker_spec): New.
	(is_tracepoint): Handle static tracepoints.
	(validate_commands_for_breakpoint): Static tracepoints can't do
	while-stepping.
	(static_tracepoints_here): New.
	(bpstat_what): Handle static tracepoints.
	(print_one_breakpoint_location, allocate_bp_location, mention):
	Ditto.
	(create_breakpoint_sal): Ditto.
	(decode_static_tracepoint_spec): New.
	(create_breakpoint): Replace `hardwareflag', and `traceflag' with
	`type_wanted'.  Adjust.  Handle static tracepoint marker
	locations.
	(break_command_1): Adjust.
	(update_static_tracepoint): New.
	(update_breakpoint_locations): Handle static tracepoints.
	(breakpoint_re_set_one): Handle static tracepoint marker
	locations.
	(disable_command, enable_command): Handle static tracepoints.
	(trace_command, ftrace_command): Adjust.
	(strace_command): New.
	(create_tracepoint_from_upload): Adjust.
	(save_breakpoints): Handle static tracepoints.
	(_initialize_breakpoint): Install the "strace" command.
	* breakpoint.h (enum bptype): New bp_static_tracepoint type.
	(struct breakpoint): New fields static_trace_marker_id and
	static_trace_marker_id_idx.
	(breakpoints_here_p): Declare.
	(create_breakpoint): Adjust.
	(static_tracepoints_here): Declare.
	* remote.c (struct remote_state) <static_tracepoints>: New field.
	(PACKET_qXfer_statictrace_read, PACKET_StaticTracepoints): New.
	(remote_static_tracepoint_marker_at): New.
	(remote_static_tracepoint_markers_by_strid): New.
	(remote_static_tracepoint_feature): New.
	(remote_disconnected_tracing_feature): Handle "StaticTracepoints".
	(remote_xfer_partial): Handle TARGET_OBJECT_STATIC_TRACE_DATA.
	(remote_supports_static_tracepoints): New.
	(remote_download_tracepoint): Download static tracepoints.
	(init_remote_ops): Install remote_static_tracepoint_marker_at and
	remote_static_tracepoint_markers_by_strid.
	(_initialize_remote): Install set|show remote static-tracepoints,
	and set|show remote read-sdata-object commands.
	* target.c (update_current_target): Inherit and default
	to_static_tracepoint_marker_at, and
	to_static_tracepoint_markers_by_strid.
	* target.h (static_tracepoint_marker): Forward declare.
	(enum target_object): New object TARGET_OBJECT_STATIC_TRACE_DATA.
	(static_tracepoint_marker_p): New typedef.
	(DEF_VEC_P(static_tracepoint_marker_p)): New VEC type.
	(struct target_ops): New fields to_static_tracepoint_marker_at and
	to_static_tracepoint_markers_by_strid.
	(target_static_tracepoint_marker_at)
	(target_static_tracepoint_markers_by_strid): New.
	* tracepoint.c: Include source.h.
	(validate_actionline): Handle $_sdata.
	(struct collection_list): New field strace_data.
	(add_static_trace_data): New.
	(clear_collection_list): Clear strace_data.
	(stringify_collection_list): Account for a possible static trace
	data collection.
	(encode_actions_1): Encode an $_sdata collection.
	(parse_tracepoint_definition): Handle static tracepoints.
	(parse_static_tracepoint_marker_definition): New.
	(release_static_tracepoint_marker): New.
	(print_one_static_tracepoint_marker): New.
	(info_static_tracepoint_markers_command): New.
	(sdata_make_value): New.
	(_initialize_tracepoint): Create the $_sdata convenience variable.
	Add the "info static-tracepoint-markers" command.
	Mention $_sdata in the "collect" command's help output.
	* tracepoint.h (struct static_tracepoint_marker): New.
	(parse_static_tracepoint_marker_definition)
	(release_static_tracepoint_marker): Declare.
	* mi/mi-cmd-break.c (mi_cmd_break_insert): Adjust.
	* python/py-breakpoint.c (bppy_new): Adjust.

	doc/
	* gdb.texinfo (Convenience Variables): Document $_sdata.
	(Commands to Set Tracepoints): Describe static tracepoints.  Add
	`Listing Static Tracepoint Markers' menu entry.  Document
	"strace".
	(Tracepoint Action Lists): Document collecting $_sdata.
	(Listing Static Tracepoint Markers): New subsection.
	(Tracepoints support in gdbserver): Mention static tracepoints.
	(remote packets, enabling and disabling): Mention
	read-sdata-object.
	(General Query Packets) <qSupported>: Document qXfer:sdata:read
	and StaticTracepoint.
	Mention qTfSTM, qTsSTM and qTSTMat as tracepoint packets.
	Document qXfer:sdata:read.
	(Tracepoint packets): Document qTfSTM, qTsSTM and qTSTMat.

gdb/target.h

@@ -35,6 +35,7 @@ struct trace_state_variable;
 struct trace_status;
 struct uploaded_tsv;
 struct uploaded_tp;
+struct static_tracepoint_marker;
 
 /* This include file defines the interface between the main part
    of the debugger, and the part which is target-specific, or
@@ -261,6 +262,8 @@ enum target_object
   TARGET_OBJECT_SIGNAL_INFO,
   /* The list of threads that are being debugged.  */
   TARGET_OBJECT_THREADS,
+  /* Collected static trace data.  */
+  TARGET_OBJECT_STATIC_TRACE_DATA,
   /* Possible future objects: TARGET_OBJECT_FILE, ... */
 };
 
@@ -276,6 +279,9 @@ enum trace_find_type
     tfind_outside,
   };
 
+typedef struct static_tracepoint_marker *static_tracepoint_marker_p;
+DEF_VEC_P(static_tracepoint_marker_p);
+
 /* Request that OPS transfer up to LEN 8-bit bytes of the target's
    OBJECT.  The OFFSET, for a seekable object, specifies the
    starting point.  The ANNEX can be used to provide additional
@@ -689,6 +695,16 @@ struct target_ops
     /* Send the new settings of write permission variables.  */
     void (*to_set_permissions) (void);
 
+    /* Look for a static tracepoint marker at ADDR, and fill in MARKER
+       with its details.  Return 1 on success, 0 on failure.  */
+    int (*to_static_tracepoint_marker_at) (CORE_ADDR,
+					   struct static_tracepoint_marker *marker);
+
+    /* Return a vector of all tracepoints markers string id ID, or all
+       markers if ID is NULL.  */
+    VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid)
+      (const char *id);
+
     int to_magic;
     /* Need sub-structure for target machine related rather than comm related?
      */
@@ -1384,6 +1400,12 @@ extern int target_search_memory (CORE_ADDR start_addr,
 #define target_set_permissions() \
   (*current_target.to_set_permissions) ()
 
+#define target_static_tracepoint_marker_at(addr, marker) \
+  (*current_target.to_static_tracepoint_marker_at) (addr, marker)
+
+#define target_static_tracepoint_markers_by_strid(marker_id) \
+  (*current_target.to_static_tracepoint_markers_by_strid) (marker_id)
+
 /* Command logging facility.  */
 
 #define target_log_command(p)						\