Add fast tracepoints.

	* arch-utils.h (default_fast_tracepoint_valid_at): Declare.
	* arch-utils.c (default_fast_tracepoint_valid_at): New function.
	* breakpoint.h (enum bptype): Add bp_fast_tracepoint.
	* breakpoint.c (tracepoint_type): New function.
	(ALL_TRACEPOINTS): Use it.
	(should_be_inserted): Ditto.
	(bpstat_check_location): Ditto.
	(print_one_breakpoint_location): Ditto.
	(user_settable_breakpoint): Ditto.
	(set_breakpoint_location_function): Ditto.
	(disable_breakpoints_in_shlibs): Ditto.
	(delete_trace_command): Ditto.
	(print_it_typical): Add bp_fast_tracepoint case.
	(bpstat_what): Ditto.
	(print_one_breakpoint_location): Ditto.
	(allocate_bp_location): Ditto.
	(mention): Ditto.
	(breakpoint_re_set_one): Ditto.
	(disable_command): Ditto.
	(enable_command): Ditto.
	(check_fast_tracepoint_sals): New function.
	(break_command_really): Call it.
	(ftrace_command): New function.
	(_initialize_breakpoint): Add ftrace command.
	* gdbarch.sh (fast_tracepoint_valid_at): New.
	* gdbarch.h, gdbarch.c: Regenerate.
	* i386-tdep.c (i386_fast_tracepoint_valid_at): New function.
	(i386_gdbarch_init): Use it.
	* remote.c (struct remote_state): New field fast_tracepoints.
	(PACKET_FastTracepoints): New packet config type.
	(remote_fast_tracepoint_feature): New function.
	(remote_protocol_features): Add FastTracepoints.
	(remote_supports_fast_tracepoints): New function.
	(_initialize_remote): Add FastTracepoints.
	* tracepoint.c (download_tracepoint): Add fast tracepoint option.
	* NEWS: Mention fast tracepoints.

	* gdb.texinfo (Create and Delete Tracepoints): Describe fast
	tracepoints.
	(Tracepoint Packets): Describe remote protocol for fast
	tracepoints.

	* gdb.trace/tracecmd.exp: Test ftrace.

1 files changed, 24 insertions, 0 deletions

diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 3680dc4..9d77027 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -250,6 +250,7 @@ struct gdbarch
   int has_global_solist;
   int has_global_breakpoints;
   gdbarch_has_shared_address_space_ftype *has_shared_address_space;
+  gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at;
 };
 
 
@@ -391,6 +392,7 @@ struct gdbarch startup_gdbarch =
   0,  /* has_global_solist */
   0,  /* has_global_breakpoints */
   default_has_shared_address_space,  /* has_shared_address_space */
+  default_fast_tracepoint_valid_at,  /* fast_tracepoint_valid_at */
   /* startup_gdbarch() */
 };
 
@@ -475,6 +477,7 @@ gdbarch_alloc (const struct gdbarch_info *info,
   gdbarch->target_signal_from_host = default_target_signal_from_host;
   gdbarch->target_signal_to_host = default_target_signal_to_host;
   gdbarch->has_shared_address_space = default_has_shared_address_space;
+  gdbarch->fast_tracepoint_valid_at = default_fast_tracepoint_valid_at;
   /* gdbarch_alloc() */
 
   return gdbarch;
@@ -653,6 +656,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
   /* Skip verify of has_global_solist, invalid_p == 0 */
   /* Skip verify of has_global_breakpoints, invalid_p == 0 */
   /* Skip verify of has_shared_address_space, invalid_p == 0 */
+  /* Skip verify of fast_tracepoint_valid_at, invalid_p == 0 */
   buf = ui_file_xstrdup (log, &length);
   make_cleanup (xfree, buf);
   if (length > 0)
@@ -826,6 +830,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
                       "gdbarch_dump: elf_make_msymbol_special = <%s>\n",
                       host_address_to_string (gdbarch->elf_make_msymbol_special));
   fprintf_unfiltered (file,
+                      "gdbarch_dump: fast_tracepoint_valid_at = <%s>\n",
+                      host_address_to_string (gdbarch->fast_tracepoint_valid_at));
+  fprintf_unfiltered (file,
                       "gdbarch_dump: gdbarch_fetch_pointer_argument_p() = %d\n",
                       gdbarch_fetch_pointer_argument_p (gdbarch));
   fprintf_unfiltered (file,
@@ -3528,6 +3535,23 @@ set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch,
   gdbarch->has_shared_address_space = has_shared_address_space;
 }
 
+int
+gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg)
+{
+  gdb_assert (gdbarch != NULL);
+  gdb_assert (gdbarch->fast_tracepoint_valid_at != NULL);
+  if (gdbarch_debug >= 2)
+    fprintf_unfiltered (gdb_stdlog, "gdbarch_fast_tracepoint_valid_at called\n");
+  return gdbarch->fast_tracepoint_valid_at (gdbarch, addr, isize, msg);
+}
+
+void
+set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch,
+                                      gdbarch_fast_tracepoint_valid_at_ftype fast_tracepoint_valid_at)
+{
+  gdbarch->fast_tracepoint_valid_at = fast_tracepoint_valid_at;
+}
+
 
 /* Keep a registry of per-architecture data-pointers required by GDB
    modules. */