Add selftests run filtering

With the growing number of selftests, I think it would be useful to be
able to run only a subset of the tests.  This patch associates a name to
each registered selftest.  It then allows doing something like:

  (gdb) maintenance selftest aarch64
  Running self-tests.
  Running selftest aarch64-analyze-prologue.
  Running selftest aarch64-process-record.
  Ran 2 unit tests, 0 failed

or with gdbserver:

  ./gdbserver --selftest=aarch64

In both cases, only the tests that contain "aarch64" in their name are
ran.  To help validate that the tests you want to run were actually ran,
it also prints a message with the test name before running each test.

Right now, all the arch-dependent tests are registered as a single test
of the selftests.  To be able to filter those too, I made them
"first-class citizen" selftests.  The selftest type is an interface,
with different implementations for "simple selftests" and "arch
selftests".  The run_tests function simply iterates on that an invokes
operator() on each test.

I changed the tests data structure from a vector to a map, because

  - it allows iterating in a stable (alphabetical) order
  - it allows to easily verify if a test with a given name has been
    registered, to avoid duplicates

There's also a new command "maintenance info selftests" that lists the
registered selftests.

gdb/ChangeLog:

	* common/selftest.h (selftest): New struct/interface.
	(register_test): Add name parameter, add new overload.
	(run_tests): Add filter parameter.
	(for_each_selftest_ftype): New typedef.
	(for_each_selftest): New declaration.
	* common/selftest.c (tests): Change type to
	map<string, unique_ptr<selftest>>.
	(simple_selftest): New struct.
	(register_test): New function.
	(register_test): Add name parameter and use it.
	(run_tests): Add filter parameter and use it.  Add prints.
	Adjust to vector -> map change.
	* aarch64-tdep.c (_initialize_aarch64_tdep): Add names when
	registering selftests.
	* arm-tdep.c (_initialize_arm_tdep): Likewise.
	* disasm-selftests.c (_initialize_disasm_selftests): Likewise.
	* dwarf2-frame.c (_initialize_dwarf2_frame): Likewise.
	* dwarf2loc.c (_initialize_dwarf2loc): Likewise.
	* findvar.c (_initialize_findvar): Likewise.
	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Likewise.
	* maint.c (maintenance_selftest): Update call to run_tests.
	(maintenance_info_selftests): New function.
	(_initialize_maint_cmds): Register "maintenance info selftests"
	command.  Update "maintenance selftest" doc.
	* regcache.c (_initialize_regcache): Add names when registering
	selftests.
	* rust-exp.y (_initialize_rust_exp): Likewise.
	* selftest-arch.c (gdbarch_selftest): New struct.
	(gdbarch_tests): Remove.
	(register_test_foreach_arch): Add name parameter.  Call
	register_test.
	(tests_with_arch): Remove, move most content to
	gdbarch_selftest::operator().
	(_initialize_selftests_foreach_arch): Remove.
	* selftest-arch.h (register_test_foreach_arch): Add name
	parameter.
	(run_tests_with_arch): New declaration.
	* utils-selftests.c (_initialize_utils_selftests): Add names
	when registering selftests.
	* utils.c (_initialize_utils): Likewise.
	* unittests/array-view-selftests.c
	(_initialize_array_view_selftests): Likewise.
	* unittests/environ-selftests.c (_initialize_environ_selftests):
	Likewise.
	* unittests/function-view-selftests.c
	(_initialize_function_view_selftests): Likewise.
	* unittests/offset-type-selftests.c
	(_initialize_offset_type_selftests): Likewise.
	* unittests/optional-selftests.c
	(_initialize_optional_selftests): Likewise.
	* unittests/scoped_restore-selftests.c
	(_initialize_scoped_restore_selftests): Likewise.
	* NEWS: Document "maintenance selftest" and "maint info
	selftests".

gdb/gdbserver/ChangeLog:

	* server.c (captured_main): Accept argument for --selftest.
	Update run_tests call.
	* linux-x86-tdesc-selftest.c (initialize_low_tdesc): Add names
	when registering selftests.

gdb/doc/ChangeLog:

	* gdb.texinfo (Maintenance Commands): Document filter parameter
	of "maint selftest".  Document "maint info selftests" command.

29 files changed, 287 insertions, 108 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9ee44fb..280c344 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,62 @@
 2017-09-16  Simon Marchi  <simon.marchi@ericsson.com>
 
+	* common/selftest.h (selftest): New struct/interface.
+	(register_test): Add name parameter, add new overload.
+	(run_tests): Add filter parameter.
+	(for_each_selftest_ftype): New typedef.
+	(for_each_selftest): New declaration.
+	* common/selftest.c (tests): Change type to
+	map<string, unique_ptr<selftest>>.
+	(simple_selftest): New struct.
+	(register_test): New function.
+	(register_test): Add name parameter and use it.
+	(run_tests): Add filter parameter and use it.  Add prints.
+	Adjust to vector -> map change.
+	* aarch64-tdep.c (_initialize_aarch64_tdep): Add names when
+	registering selftests.
+	* arm-tdep.c (_initialize_arm_tdep): Likewise.
+	* disasm-selftests.c (_initialize_disasm_selftests): Likewise.
+	* dwarf2-frame.c (_initialize_dwarf2_frame): Likewise.
+	* dwarf2loc.c (_initialize_dwarf2loc): Likewise.
+	* findvar.c (_initialize_findvar): Likewise.
+	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Likewise.
+	* maint.c (maintenance_selftest): Update call to run_tests.
+	(maintenance_info_selftests): New function.
+	(_initialize_maint_cmds): Register "maintenance info selftests"
+	command.  Update "maintenance selftest" doc.
+	* regcache.c (_initialize_regcache): Add names when registering
+	selftests.
+	* rust-exp.y (_initialize_rust_exp): Likewise.
+	* selftest-arch.c (gdbarch_selftest): New struct.
+	(gdbarch_tests): Remove.
+	(register_test_foreach_arch): Add name parameter.  Call
+	register_test.
+	(tests_with_arch): Remove, move most content to
+	gdbarch_selftest::operator().
+	(_initialize_selftests_foreach_arch): Remove.
+	* selftest-arch.h (register_test_foreach_arch): Add name
+	parameter.
+	(run_tests_with_arch): New declaration.
+	* utils-selftests.c (_initialize_utils_selftests): Add names
+	when registering selftests.
+	* utils.c (_initialize_utils): Likewise.
+	* unittests/array-view-selftests.c
+	(_initialize_array_view_selftests): Likewise.
+	* unittests/environ-selftests.c (_initialize_environ_selftests):
+	Likewise.
+	* unittests/function-view-selftests.c
+	(_initialize_function_view_selftests): Likewise.
+	* unittests/offset-type-selftests.c
+	(_initialize_offset_type_selftests): Likewise.
+	* unittests/optional-selftests.c
+	(_initialize_optional_selftests): Likewise.
+	* unittests/scoped_restore-selftests.c
+	(_initialize_scoped_restore_selftests): Likewise.
+	* NEWS: Document "maintenance selftest" and "maint info
+	selftests".
+
+2017-09-16  Simon Marchi  <simon.marchi@ericsson.com>
+
 	* mi/mi-main.c (mi_load_progress): Restore current_uiout using a
 	scoped_restore.
 
diff --git a/gdb/NEWS b/gdb/NEWS
index 2e6d48c..3244f7e 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -59,6 +59,9 @@ QStartupWithShell
 * The "maintenance print c-tdesc" command now takes an optional
   argument which is the file name of XML target description.
 
+* The "maintenance selftest" command now takes an optional argument to
+  filter the tests to be run.
+
 * New commands
 
 set|show compile-gcc
@@ -69,6 +72,9 @@ set debug separate-debug-file
 show debug separate-debug-file
   Control the display of debug output about separate debug file search.
 
+maint info selftests
+  List the registered selftests.
+
 * TUI Single-Key mode now supports two new shortcut keys: `i' for stepi and
   `o' for nexti.
 
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index e88889f..da5731e 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -3065,8 +3065,10 @@ When on, AArch64 specific debugging is enabled."),
 			    &setdebuglist, &showdebuglist);
 
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::aarch64_analyze_prologue_test);
-  selftests::register_test (selftests::aarch64_process_record_test);
+  selftests::register_test ("aarch64-analyze-prologue",
+			    selftests::aarch64_analyze_prologue_test);
+  selftests::register_test ("aarch64-process-record",
+			    selftests::aarch64_process_record_test);
 #endif
 }
 
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 6dda13d..6b2fff4 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -9725,7 +9725,7 @@ vfp - VFP co-processor."),
 			   &setdebuglist, &showdebuglist);
 
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::arm_record_test);
+  selftests::register_test ("arm-record", selftests::arm_record_test);
 #endif
 
 }
diff --git a/gdb/common/selftest.c b/gdb/common/selftest.c
index 0fb8f2a..6518e58 100644
--- a/gdb/common/selftest.c
+++ b/gdb/common/selftest.c
@@ -20,35 +20,72 @@
 #include "common-exceptions.h"
 #include "common-debug.h"
 #include "selftest.h"
-#include <vector>
+#include <map>
 
 namespace selftests
 {
+/* All the tests that have been registered.  Using an std::map allows keeping
+   the order of tests stable and easily looking up whether a test name
+   exists.  */
 
-/* All the tests that have been registered.  */
+static std::map<std::string, std::unique_ptr<selftest>> tests;
 
-static std::vector<self_test_function *> tests;
+/* A selftest that calls the test function without arguments.  */
+
+struct simple_selftest : public selftest
+{
+  simple_selftest (self_test_function *function_)
+  : function (function_)
+  {}
+
+  void operator() () const override
+  {
+    function ();
+  }
+
+  self_test_function *function;
+};
 
 /* See selftest.h.  */
 
 void
-register_test (self_test_function *function)
+register_test (const std::string &name, selftest *test)
 {
-  tests.push_back (function);
+  /* Check that no test with this name already exist.  */
+  gdb_assert (tests.find (name) == tests.end ());
+
+  tests[name] = std::unique_ptr<selftest> (test);
 }
 
 /* See selftest.h.  */
 
 void
-run_tests (void)
+register_test (const std::string &name, self_test_function *function)
 {
-  int failed = 0;
+  register_test (name, new simple_selftest (function));
+}
+
+/* See selftest.h.  */
 
-  for (int i = 0; i < tests.size (); ++i)
+void
+run_tests (const char *filter)
+{
+  int ran = 0, failed = 0;
+
+  for (const auto &pair : tests)
     {
+      const std::string &name = pair.first;
+      const std::unique_ptr<selftest> &test = pair.second;
+
+      if (filter != NULL && *filter != '\0'
+	  && name.find (filter) == std::string::npos)
+	continue;
+
       TRY
 	{
-	  tests[i] ();
+	  debug_printf (_("Running selftest %s.\n"), name.c_str ());
+	  ++ran;
+	  (*test) ();
 	}
       CATCH (ex, RETURN_MASK_ERROR)
 	{
@@ -60,7 +97,16 @@ run_tests (void)
       reset ();
     }
 
-  debug_printf ("Ran %lu unit tests, %d failed\n",
-		(long) tests.size (), failed);
+  debug_printf (_("Ran %d unit tests, %d failed\n"),
+		ran, failed);
 }
+
+/* See selftest.h.  */
+
+void for_each_selftest (for_each_selftest_ftype func)
+{
+  for (const auto &pair : tests)
+    func (pair.first);
+}
+
 } // namespace selftests
diff --git a/gdb/common/selftest.h b/gdb/common/selftest.h
index e211c34..35a344f 100644
--- a/gdb/common/selftest.h
+++ b/gdb/common/selftest.h
@@ -27,18 +27,38 @@ typedef void self_test_function (void);
 namespace selftests
 {
 
+/* Interface for the various kinds of selftests.  */
+
+struct selftest
+{
+  virtual void operator() () const = 0;
+};
+
 /* Register a new self-test.  */
 
-extern void register_test (self_test_function *function);
+extern void register_test (const std::string &name, selftest *test);
+
+/* Register a new self-test.  */
+
+extern void register_test (const std::string &name,
+			   self_test_function *function);
 
 /* Run all the self tests.  This print a message describing the number
-   of test and the number of failures.  */
+   of test and the number of failures.
+
+   If FILTER is not NULL and not empty, only tests with names containing FILTER
+   will be ran.  */
 
-extern void run_tests (void);
+extern void run_tests (const char *filter);
 
 /* Reset GDB or GDBserver's internal state.  */
 extern void reset ();
 
+typedef void for_each_selftest_ftype (const std::string &name);
+
+/* Call FUNC for each registered selftest.  */
+
+extern void for_each_selftest (for_each_selftest_ftype func);
 }
 
 /* Check that VALUE is true, and, if not, throw an exception.  */
diff --git a/gdb/disasm-selftests.c b/gdb/disasm-selftests.c
index bc2f7b7..ecfb974 100644
--- a/gdb/disasm-selftests.c
+++ b/gdb/disasm-selftests.c
@@ -211,7 +211,9 @@ void
 _initialize_disasm_selftests (void)
 {
 #if GDB_SELF_TEST
-  selftests::register_test_foreach_arch (selftests::print_one_insn_test);
-  selftests::register_test_foreach_arch (selftests::memory_error_test);
+  selftests::register_test_foreach_arch ("print_one_insn",
+					 selftests::print_one_insn_test);
+  selftests::register_test_foreach_arch ("memory_error",
+					 selftests::memory_error_test);
 #endif
 }
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index db2f64f..aaec840 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+2017-09-16  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* gdb.texinfo (Maintenance Commands): Document filter parameter
+	of "maint selftest".  Document "maint info selftests" command.
+
 2017-09-11  Tom Tromey  <tom@tromey.com>
 
 	* python.texi (Events In Python): Document new events.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 8282dae..af5fe6f 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -35067,8 +35067,16 @@ data structures, including its flags and contained types.
 
 @kindex maint selftest
 @cindex self tests
+@item maint selftest @r{[}@var{filter}@r{]}
 Run any self tests that were compiled in to @value{GDBN}.  This will
 print a message showing how many tests were run, and how many failed.
+If a @var{filter} is passed, only the tests with @var{filter} in their
+name will by ran.
+
+@kindex "maint info selftests"
+@cindex self tests
+@item maint info selftests
+List the selftests compiled in to @value{GDBN}.
 
 @kindex maint set dwarf always-disassemble
 @kindex maint show dwarf always-disassemble
diff --git a/gdb/dwarf2-frame.c b/gdb/dwarf2-frame.c
index 64ae586..f36de17 100644
--- a/gdb/dwarf2-frame.c
+++ b/gdb/dwarf2-frame.c
@@ -2403,6 +2403,7 @@ _initialize_dwarf2_frame (void)
   dwarf2_frame_objfile_data = register_objfile_data ();
 
 #if GDB_SELF_TEST
-  selftests::register_test_foreach_arch (selftests::execute_cfa_program_test);
+  selftests::register_test_foreach_arch ("execute_cfa_program",
+					 selftests::execute_cfa_program_test);
 #endif
 }
diff --git a/gdb/dwarf2loc.c b/gdb/dwarf2loc.c
index 3c2f6aa..c485eaf 100644
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -4671,6 +4671,6 @@ _initialize_dwarf2loc (void)
 			     &setdebuglist, &showdebuglist);
 
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::copy_bitwise_tests);
+  selftests::register_test ("copy_bitwise", selftests::copy_bitwise_tests);
 #endif
 }
diff --git a/gdb/findvar.c b/gdb/findvar.c
index de6b6ed..b3fb337 100644
--- a/gdb/findvar.c
+++ b/gdb/findvar.c
@@ -1095,6 +1095,8 @@ void
 _initialize_findvar (void)
 {
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::findvar_tests::copy_integer_to_size_test);
+  selftests::register_test
+    ("copy_integer_to_size",
+     selftests::findvar_tests::copy_integer_to_size_test);
 #endif
 }
diff --git a/gdb/gdbarch-selftests.c b/gdb/gdbarch-selftests.c
index cb15964..f0b8d5d 100644
--- a/gdb/gdbarch-selftests.c
+++ b/gdb/gdbarch-selftests.c
@@ -151,6 +151,7 @@ void
 _initialize_gdbarch_selftests (void)
 {
 #if GDB_SELF_TEST
-  selftests::register_test_foreach_arch (selftests::register_to_value_test);
+  selftests::register_test_foreach_arch ("register_to_value",
+					 selftests::register_to_value_test);
 #endif
 }
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 50b656e..61b2e06 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,10 @@
+2017-09-16  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* server.c (captured_main): Accept argument for --selftest.
+	Update run_tests call.
+	* linux-x86-tdesc-selftest.c (initialize_low_tdesc): Add names
+	when registering selftests.
+
 2017-09-16  Sergio Durigan Junior  <sergiodj@redhat.com>
 
 	* regcache.c (get_thread_regcache): Update code to use "std::vector"
diff --git a/gdb/gdbserver/linux-x86-tdesc-selftest.c b/gdb/gdbserver/linux-x86-tdesc-selftest.c
index aa5a8e9..c5ab2ab 100644
--- a/gdb/gdbserver/linux-x86-tdesc-selftest.c
+++ b/gdb/gdbserver/linux-x86-tdesc-selftest.c
@@ -164,7 +164,7 @@ initialize_low_tdesc ()
   init_registers_i386_avx_avx512_linux ();
   init_registers_i386_avx_mpx_avx512_pku_linux ();
 
-  selftests::register_test (selftests::tdesc::i386_tdesc_test);
+  selftests::register_test ("i386-tdesc", selftests::tdesc::i386_tdesc_test);
 
 #ifdef __x86_64__
   init_registers_x32_linux ();
@@ -178,6 +178,6 @@ initialize_low_tdesc ()
   init_registers_amd64_avx_avx512_linux ();
   init_registers_amd64_avx_mpx_avx512_pku_linux ();
 
-  selftests::register_test (selftests::tdesc::amd64_tdesc_test);
+  selftests::register_test ("amd64-tdesc", selftests::tdesc::amd64_tdesc_test);
 #endif
 }
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index 6593d6b..99dedb2 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -3661,6 +3661,7 @@ captured_main (int argc, char *argv[])
   volatile int attach = 0;
   int was_running;
   bool selftest = false;
+  const char *selftest_filter = NULL;
 
   while (*next_arg != NULL && **next_arg == '-')
     {
@@ -3781,6 +3782,11 @@ captured_main (int argc, char *argv[])
 	run_once = 1;
       else if (strcmp (*next_arg, "--selftest") == 0)
 	selftest = true;
+      else if (startswith (*next_arg, "--selftest="))
+	{
+	  selftest = true;
+	  selftest_filter = *next_arg + strlen ("--selftest=");
+	}
       else
 	{
 	  fprintf (stderr, "Unknown argument: %s\n", *next_arg);
@@ -3857,7 +3863,7 @@ captured_main (int argc, char *argv[])
 
   if (selftest)
     {
-      selftests::run_tests ();
+      selftests::run_tests (selftest_filter);
       throw_quit ("Quit");
     }
 
diff --git a/gdb/maint.c b/gdb/maint.c
index 6dd6e8b..b540d1c 100644
--- a/gdb/maint.c
+++ b/gdb/maint.c
@@ -957,7 +957,16 @@ show_per_command_cmd (char *args, int from_tty)
 static void
 maintenance_selftest (char *args, int from_tty)
 {
-  selftests::run_tests ();
+  selftests::run_tests (args);
+}
+
+static void
+maintenance_info_selftests (char *arg, int from_tty)
+{
+  printf_filtered ("Registered selftests:\n");
+  selftests::for_each_selftest ([] (const std::string &name) {
+    printf_filtered (" - %s\n", name.c_str ());
+  });
 }
 
 
@@ -1140,11 +1149,14 @@ If you decide you want to use it: maintenance undeprecate 'commandname'"),
 
   add_cmd ("selftest", class_maintenance, maintenance_selftest, _("\
 Run gdb's unit tests.\n\
-Usage: maintenance selftest\n\
+Usage: maintenance selftest [filter]\n\
 This will run any unit tests that were built in to gdb.\n\
-gdb will abort if any test fails."),
+If a filter is given, only the tests with that value in their name will ran."),
 	   &maintenancelist);
 
+  add_cmd ("selftests", class_maintenance, maintenance_info_selftests,
+	 _("List the registered selftests."), &maintenanceinfolist);
+
   add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\
 Set watchdog timer."), _("\
 Show watchdog timer."), _("\
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 63d70d7..4ef9151 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -1773,7 +1773,8 @@ Print the internal register configuration including each register's\n\
 remote register number and buffer offset in the g/G packets.\n\
 Takes an optional file parameter."),
 	   &maintenanceprintlist);
+
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::current_regcache_test);
+  selftests::register_test ("current_regcache", selftests::current_regcache_test);
 #endif
 }
diff --git a/gdb/rust-exp.y b/gdb/rust-exp.y
index 88c6623..0cb185c 100644
--- a/gdb/rust-exp.y
+++ b/gdb/rust-exp.y
@@ -2779,6 +2779,6 @@ _initialize_rust_exp (void)
   gdb_assert (code == 0);
 
 #if GDB_SELF_TEST
-  selftests::register_test (rust_lex_tests);
+  selftests::register_test ("rust-lex", rust_lex_tests);
 #endif
 }
diff --git a/gdb/selftest-arch.c b/gdb/selftest-arch.c
index 522b1da..1ddc663 100644
--- a/gdb/selftest-arch.c
+++ b/gdb/selftest-arch.c
@@ -25,12 +25,75 @@
 
 namespace selftests {
 
-static std::vector<self_test_foreach_arch_function *> gdbarch_tests;
+/* A kind of selftest that calls the test function once for each gdbarch known
+   to GDB.  */
+
+struct gdbarch_selftest : public selftest
+{
+  gdbarch_selftest (self_test_foreach_arch_function *function_)
+  : function (function_)
+  {}
+
+  void operator() () const override
+  {
+    const char **arches = gdbarch_printable_names ();
+    bool pass = true;
+
+    for (int i = 0; arches[i] != NULL; i++)
+      {
+	if (strcmp ("fr300", arches[i]) == 0)
+	  {
+	    /* PR 20946 */
+	    continue;
+	  }
+	else if (strcmp ("powerpc:EC603e", arches[i]) == 0
+		 || strcmp ("powerpc:e500mc", arches[i]) == 0
+		 || strcmp ("powerpc:e500mc64", arches[i]) == 0
+		 || strcmp ("powerpc:titan", arches[i]) == 0
+		 || strcmp ("powerpc:vle", arches[i]) == 0
+		 || strcmp ("powerpc:e5500", arches[i]) == 0
+		 || strcmp ("powerpc:e6500", arches[i]) == 0)
+	  {
+	    /* PR 19797 */
+	    continue;
+	  }
+
+	QUIT;
+
+	TRY
+	  {
+	    struct gdbarch_info info;
+
+	    gdbarch_info_init (&info);
+	    info.bfd_arch_info = bfd_scan_arch (arches[i]);
+
+	    struct gdbarch *gdbarch = gdbarch_find_by_info (info);
+	    SELF_CHECK (gdbarch != NULL);
+
+	    function (gdbarch);
+	  }
+	CATCH (ex, RETURN_MASK_ERROR)
+	  {
+	    pass = false;
+	    exception_fprintf (gdb_stderr, ex,
+			       _("Self test failed: arch %s: "), arches[i]);
+	  }
+	END_CATCH
+
+	reset ();
+      }
+
+    SELF_CHECK (pass);
+  }
+
+  self_test_foreach_arch_function *function;
+};
 
 void
-register_test_foreach_arch (self_test_foreach_arch_function *function)
+register_test_foreach_arch (const std::string &name,
+			    self_test_foreach_arch_function *function)
 {
-  gdbarch_tests.push_back (function);
+  register_test (name, new gdbarch_selftest (function));
 }
 
 void
@@ -40,70 +103,5 @@ reset ()
   registers_changed ();
   reinit_frame_cache ();
 }
-
-static void
-tests_with_arch ()
-{
-  int failed = 0;
-
-  for (const auto &f : gdbarch_tests)
-    {
-      const char **arches = gdbarch_printable_names ();
-
-      for (int i = 0; arches[i] != NULL; i++)
-	{
-	  if (strcmp ("fr300", arches[i]) == 0)
-	    {
-	      /* PR 20946 */
-	      continue;
-	    }
-	  else if (strcmp ("powerpc:EC603e", arches[i]) == 0
-		   || strcmp ("powerpc:e500mc", arches[i]) == 0
-		   || strcmp ("powerpc:e500mc64", arches[i]) == 0
-		   || strcmp ("powerpc:titan", arches[i]) == 0
-		   || strcmp ("powerpc:vle", arches[i]) == 0
-		   || strcmp ("powerpc:e5500", arches[i]) == 0
-		   || strcmp ("powerpc:e6500", arches[i]) == 0)
-	    {
-	      /* PR 19797 */
-	      continue;
-	    }
-
-	  QUIT;
-
-	  TRY
-	    {
-	      struct gdbarch_info info;
-
-	      gdbarch_info_init (&info);
-	      info.bfd_arch_info = bfd_scan_arch (arches[i]);
-
-	      struct gdbarch *gdbarch = gdbarch_find_by_info (info);
-	      SELF_CHECK (gdbarch != NULL);
-	      f (gdbarch);
-	    }
-	  CATCH (ex, RETURN_MASK_ERROR)
-	    {
-	      ++failed;
-	      exception_fprintf (gdb_stderr, ex,
-				 _("Self test failed: arch %s: "), arches[i]);
-	    }
-	  END_CATCH
-
-	  reset ();
-	}
-    }
-
-  SELF_CHECK (failed == 0);
-}
-
 } // namespace selftests
 #endif /* GDB_SELF_TEST */
-
-void
-_initialize_selftests_foreach_arch ()
-{
-#if GDB_SELF_TEST
-  selftests::register_test (selftests::tests_with_arch);
-#endif
-}
diff --git a/gdb/selftest-arch.h b/gdb/selftest-arch.h
index dc16c4d..f1fa38e 100644
--- a/gdb/selftest-arch.h
+++ b/gdb/selftest-arch.h
@@ -24,7 +24,8 @@ typedef void self_test_foreach_arch_function (struct gdbarch *);
 namespace selftests
 {
 extern void
-  register_test_foreach_arch (self_test_foreach_arch_function *function);
+  register_test_foreach_arch (const std::string &name,
+			      self_test_foreach_arch_function *function);
 }
 
 #endif /* SELFTEST_ARCH_H */
diff --git a/gdb/unittests/array-view-selftests.c b/gdb/unittests/array-view-selftests.c
index e5c0043..f618c40 100644
--- a/gdb/unittests/array-view-selftests.c
+++ b/gdb/unittests/array-view-selftests.c
@@ -491,5 +491,6 @@ run_tests ()
 void
 _initialize_array_view_selftests ()
 {
-  selftests::register_test (selftests::array_view_tests::run_tests);
+  selftests::register_test ("array_view",
+			    selftests::array_view_tests::run_tests);
 }
diff --git a/gdb/unittests/environ-selftests.c b/gdb/unittests/environ-selftests.c
index 81a71ee..f770901 100644
--- a/gdb/unittests/environ-selftests.c
+++ b/gdb/unittests/environ-selftests.c
@@ -301,5 +301,6 @@ run_tests ()
 void
 _initialize_environ_selftests ()
 {
-  selftests::register_test (selftests::gdb_environ_tests::run_tests);
+  selftests::register_test ("gdb_environ",
+			    selftests::gdb_environ_tests::run_tests);
 }
diff --git a/gdb/unittests/function-view-selftests.c b/gdb/unittests/function-view-selftests.c
index d3018ba..a899299 100644
--- a/gdb/unittests/function-view-selftests.c
+++ b/gdb/unittests/function-view-selftests.c
@@ -174,5 +174,6 @@ run_tests ()
 void
 _initialize_function_view_selftests ()
 {
-  selftests::register_test (selftests::function_view::run_tests);
+  selftests::register_test ("function_view",
+			    selftests::function_view::run_tests);
 }
diff --git a/gdb/unittests/offset-type-selftests.c b/gdb/unittests/offset-type-selftests.c
index 3e66547..5176f20 100644
--- a/gdb/unittests/offset-type-selftests.c
+++ b/gdb/unittests/offset-type-selftests.c
@@ -174,5 +174,5 @@ run_tests ()
 void
 _initialize_offset_type_selftests ()
 {
-  selftests::register_test (selftests::offset_type::run_tests);
+  selftests::register_test ("offset_type", selftests::offset_type::run_tests);
 }
diff --git a/gdb/unittests/optional-selftests.c b/gdb/unittests/optional-selftests.c
index 0bcf964..8ea19bb 100644
--- a/gdb/unittests/optional-selftests.c
+++ b/gdb/unittests/optional-selftests.c
@@ -90,5 +90,5 @@ run_tests ()
 void
 _initialize_optional_selftests ()
 {
-  selftests::register_test (selftests::optional::run_tests);
+  selftests::register_test ("optional", selftests::optional::run_tests);
 }
diff --git a/gdb/unittests/scoped_restore-selftests.c b/gdb/unittests/scoped_restore-selftests.c
index ea7492b..bc9aa2b 100644
--- a/gdb/unittests/scoped_restore-selftests.c
+++ b/gdb/unittests/scoped_restore-selftests.c
@@ -106,5 +106,6 @@ run_tests ()
 void
 _initialize_scoped_restore_selftests ()
 {
-  selftests::register_test (selftests::scoped_restore_tests::run_tests);
+  selftests::register_test ("scoped_restore",
+			    selftests::scoped_restore_tests::run_tests);
 }
diff --git a/gdb/utils-selftests.c b/gdb/utils-selftests.c
index 08feac6..5a30a93 100644
--- a/gdb/utils-selftests.c
+++ b/gdb/utils-selftests.c
@@ -55,6 +55,6 @@ void
 _initialize_utils_selftests (void)
 {
 #if GDB_SELF_TEST
-  selftests::register_test (selftests::common_utils_tests);
+  selftests::register_test ("common-utils", selftests::common_utils_tests);
 #endif
 }
diff --git a/gdb/utils.c b/gdb/utils.c
index b709af9..c660c6b 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -3267,6 +3267,6 @@ _initialize_utils (void)
   add_internal_problem_command (&demangler_warning_problem);
 
 #if GDB_SELF_TEST
-  selftests::register_test (gdb_realpath_tests);
+  selftests::register_test ("gdb_realpath", gdb_realpath_tests);
 #endif
 }