[observers] new infinity function observers

gdb/doc/observer.texi

@@ -306,3 +306,18 @@ This observer is used for internal testing.  Do not use.
 See testsuite/gdb.gdb/observer.exp.
 @end deftypefun
 
+@deftypefun void i8func_load (struct program_space *@var{pspace}, struct infinity_function *@var{func})
+The GNU Infinity function specified by @var{func} has been loaded in
+the program space specified by @var{pspace}.
+@end deftypefun
+
+@deftypefun void i8func_change (struct program_space *@var{pspace}, struct infinity_function *@var{func})
+The GNU Infinity function specified by @var{func} in the program space
+specified by @var{pspace} has changed.
+@end deftypefun
+
+@deftypefun void i8func_unload (struct program_space *@var{pspace}, struct infinity_function *@var{func})
+The GNU Infinity function specified by @var{func} is about to be
+unloaded from the program space specified by @var{pspace}.
+@end deftypefun
+

gdb/observer.sh

@@ -65,6 +65,7 @@ struct objfile;
 struct thread_info;
 struct inferior;
 struct trace_state_variable;
+struct infinity_function;
 EOF
         ;;
 esac
@@ -86,7 +87,7 @@ sed -n '
     h
 # Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
 # to event and formals: EVENT:TYPE PARAM, ...:
-    s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
+    s/^.* void \([a-z_][a-z0-9_]*\) (\(.*\))$/\1:\2/
     s/@var{//g
     s/}//g
 # Switch to held