[32/46] Use require use_gdb_stub

diff --git a/gdb/testsuite/gdb.ada/exec_changed.exp b/gdb/testsuite/gdb.ada/exec_changed.exp
index 2d9b46a20a6..4a2b7b2ac0e 100644
--- a/gdb/testsuite/gdb.ada/exec_changed.exp
+++ b/gdb/testsuite/gdb.ada/exec_changed.exp
@@ -19,10 +19,7 @@  require !skip_ada_tests
 
 # This testcase verifies the behavior of the `start' command, which
 # does not work when we use the gdb stub...
-if [use_gdb_stub] {
-    untested "skipping tests due to use_gdb_stub"
-    return
-}
+require !use_gdb_stub
 
 standard_ada_testfile first
 
diff --git a/gdb/testsuite/gdb.ada/start.exp b/gdb/testsuite/gdb.ada/start.exp
index 868a08fbe4b..4f438833eb7 100644
--- a/gdb/testsuite/gdb.ada/start.exp
+++ b/gdb/testsuite/gdb.ada/start.exp
@@ -19,10 +19,7 @@  require !skip_ada_tests
 
 # This testcase verifies the behavior of the `start' command, which
 # does not work when we use the gdb stub...
-if [use_gdb_stub] {
-    untested "skipping test due to gdb stub"
-    return
-}
+require !use_gdb_stub
 
 standard_ada_testfile dummy
 
diff --git a/gdb/testsuite/gdb.base/args.exp b/gdb/testsuite/gdb.base/args.exp
index bb99ac74ad0..f1e59b2b62c 100644
--- a/gdb/testsuite/gdb.base/args.exp
+++ b/gdb/testsuite/gdb.base/args.exp
@@ -22,9 +22,7 @@  if [target_info exists noargs] {
 
 # This test requires starting new inferior processes, skip it if the target
 # board is a stub.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/async-shell.exp b/gdb/testsuite/gdb.base/async-shell.exp
index b66f70909ae..ec260542969 100644
--- a/gdb/testsuite/gdb.base/async-shell.exp
+++ b/gdb/testsuite/gdb.base/async-shell.exp
@@ -18,9 +18,7 @@  standard_testfile
 require support_displaced_stepping
 
 # The testfile uses "run".  The real bug happened only for ![is_remote target].
-if [use_gdb_stub] {
-    return 0
-}
+require !use_gdb_stub
 
 save_vars { GDBFLAGS } {
     set GDBFLAGS "$GDBFLAGS -ex \"set non-stop on\""
diff --git a/gdb/testsuite/gdb.base/attach-pie-misread.exp b/gdb/testsuite/gdb.base/attach-pie-misread.exp
index a97a69c0a0b..2049dd4bb88 100644
--- a/gdb/testsuite/gdb.base/attach-pie-misread.exp
+++ b/gdb/testsuite/gdb.base/attach-pie-misread.exp
@@ -14,7 +14,8 @@ 
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # This test only works on GNU/Linux.
-if { ![isnative] || [is_remote host] || [use_gdb_stub]
+require !use_gdb_stub
+if { ![isnative] || [is_remote host]
      || ![istarget *-linux*] || [skip_shlib_tests]} {
     return
 }
diff --git a/gdb/testsuite/gdb.base/attach-wait-input.exp b/gdb/testsuite/gdb.base/attach-wait-input.exp
index b4b19ac8592..1e3f9ad8294 100644
--- a/gdb/testsuite/gdb.base/attach-wait-input.exp
+++ b/gdb/testsuite/gdb.base/attach-wait-input.exp
@@ -29,9 +29,7 @@ 
 # simpler to do, so we test with both editing on and off.
 
 # The test uses the "attach" command.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/break-entry.exp b/gdb/testsuite/gdb.base/break-entry.exp
index 2d943045588..f6775bfe037 100644
--- a/gdb/testsuite/gdb.base/break-entry.exp
+++ b/gdb/testsuite/gdb.base/break-entry.exp
@@ -27,10 +27,7 @@ 
 
 standard_testfile start.c
 
-if [use_gdb_stub] {
-    untested "skipping tests due to use_gdb_stub"
-    return
-}
+require !use_gdb_stub
 
 if { [prepare_for_testing "failed to prepare" ${testfile} $srcfile {additional_flags=-static}] } {
     return -1
diff --git a/gdb/testsuite/gdb.base/break-interp.exp b/gdb/testsuite/gdb.base/break-interp.exp
index 99371f1f6a1..3ec47628256 100644
--- a/gdb/testsuite/gdb.base/break-interp.exp
+++ b/gdb/testsuite/gdb.base/break-interp.exp
@@ -14,7 +14,8 @@ 
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # This test only works on GNU/Linux.
-if { ![isnative] || [is_remote host] || [use_gdb_stub]
+require !use_gdb_stub
+if { ![isnative] || [is_remote host]
      || ![istarget *-linux*] || [skip_shlib_tests]} {
     return
 }
diff --git a/gdb/testsuite/gdb.base/cached-source-file.exp b/gdb/testsuite/gdb.base/cached-source-file.exp
index 75a13378691..e40f1de1ca5 100644
--- a/gdb/testsuite/gdb.base/cached-source-file.exp
+++ b/gdb/testsuite/gdb.base/cached-source-file.exp
@@ -24,7 +24,8 @@ 
 standard_testfile
 
 # Only run on native boards.
-if { [use_gdb_stub] || [target_info gdb_protocol] == "extended-remote" } {
+require !use_gdb_stub
+if { [target_info gdb_protocol] == "extended-remote" } {
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.base/dprintf-detach.exp b/gdb/testsuite/gdb.base/dprintf-detach.exp
index 6c71c61cba8..bd3b8c633a3 100644
--- a/gdb/testsuite/gdb.base/dprintf-detach.exp
+++ b/gdb/testsuite/gdb.base/dprintf-detach.exp
@@ -21,9 +21,7 @@ 
 load_lib gdbserver-support.exp
 
 # The test relies on "detach/attach".
-if {[use_gdb_stub]} {
-    return 0
-}
+require !use_gdb_stub
 
 standard_testfile
 set escapedbinfile [string_to_regexp ${binfile}]
diff --git a/gdb/testsuite/gdb.base/fork-print-inferior-events.exp b/gdb/testsuite/gdb.base/fork-print-inferior-events.exp
index 88d421bc250..7fdd6d43809 100644
--- a/gdb/testsuite/gdb.base/fork-print-inferior-events.exp
+++ b/gdb/testsuite/gdb.base/fork-print-inferior-events.exp
@@ -20,10 +20,7 @@ 
 # 'set detach-on-fork [on,off]' are the correct ones.
 
 # This test relies on "run", so it cannot run on target remote stubs.
-if { [use_gdb_stub] } {
-    untested "not supported on target remote stubs"
-    return
-}
+require !use_gdb_stub
 
 # Test relies on checking follow-fork output. Do not run if gdb debug is
 # enabled as it will be redirected to the log.
diff --git a/gdb/testsuite/gdb.base/nostdlib.exp b/gdb/testsuite/gdb.base/nostdlib.exp
index 6c31109ad68..535f72ff8ca 100644
--- a/gdb/testsuite/gdb.base/nostdlib.exp
+++ b/gdb/testsuite/gdb.base/nostdlib.exp
@@ -18,10 +18,7 @@  standard_testfile .c
 # If we're using a stub, breakpoints at the entry point will not trigger.
 # See also the comment in break-entry.exp.
 
-if [use_gdb_stub] {
-    untested "skipping tests due to use_gdb_stub"
-    return
-}
+require !use_gdb_stub
 
 # default_target_compile would otherwise add "-lm" making the testcase
 # dependent on whether the system libraries are already prelinked.
diff --git a/gdb/testsuite/gdb.base/reread-readsym.exp b/gdb/testsuite/gdb.base/reread-readsym.exp
index edda4524f02..d6561a7e61e 100644
--- a/gdb/testsuite/gdb.base/reread-readsym.exp
+++ b/gdb/testsuite/gdb.base/reread-readsym.exp
@@ -38,9 +38,7 @@  proc generate_cmd_file {gdbfile binfile} {
     close $ofd
 }
 
-if [use_gdb_stub] {
-    return 0
-}
+require !use_gdb_stub
 
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
     return -1
diff --git a/gdb/testsuite/gdb.base/run-control-while-bg-execution.exp b/gdb/testsuite/gdb.base/run-control-while-bg-execution.exp
index 2f6dde06fa6..cddad2c178d 100644
--- a/gdb/testsuite/gdb.base/run-control-while-bg-execution.exp
+++ b/gdb/testsuite/gdb.base/run-control-while-bg-execution.exp
@@ -21,10 +21,7 @@ 
 # again.  The test was expanded to test various combinations of
 # run-control-related actions done with an inferior running in background.
 
-if {[use_gdb_stub]} {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/set-cwd.exp b/gdb/testsuite/gdb.base/set-cwd.exp
index 172d603f734..4a66a75a21d 100644
--- a/gdb/testsuite/gdb.base/set-cwd.exp
+++ b/gdb/testsuite/gdb.base/set-cwd.exp
@@ -15,10 +15,7 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if { [use_gdb_stub] } {
-    untested "skipping tests due to use_gdb_stub"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/share-env-with-gdbserver.exp b/gdb/testsuite/gdb.base/share-env-with-gdbserver.exp
index 8b2a3038e00..290b1cf7335 100644
--- a/gdb/testsuite/gdb.base/share-env-with-gdbserver.exp
+++ b/gdb/testsuite/gdb.base/share-env-with-gdbserver.exp
@@ -16,10 +16,7 @@ 
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # This test doesn't make sense on native-gdbserver.
-if { [use_gdb_stub] } {
-    untested "not supported"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/solib-display.exp b/gdb/testsuite/gdb.base/solib-display.exp
index 79e46865eba..eb20e35d27e 100644
--- a/gdb/testsuite/gdb.base/solib-display.exp
+++ b/gdb/testsuite/gdb.base/solib-display.exp
@@ -43,9 +43,7 @@  require !skip_shlib_tests
 # This is because the initial stop is done before the shared libraries are
 # loaded.
 
-if { [use_gdb_stub] } {
-    return 0
-}
+require !use_gdb_stub
 
 # Library file.
 set libname "solib-display-lib"
diff --git a/gdb/testsuite/gdb.base/solib-nodir.exp b/gdb/testsuite/gdb.base/solib-nodir.exp
index b97064911dd..80cc7f365b9 100644
--- a/gdb/testsuite/gdb.base/solib-nodir.exp
+++ b/gdb/testsuite/gdb.base/solib-nodir.exp
@@ -23,9 +23,7 @@  if [is_remote target] {
 # We need to be able to influence the target's environment and working
 # directory.  Can't do that if when we connect the inferior is already
 # running.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 set testfile "solib-nodir"
 # Arbitrary file, possibly not containing main, even an empty one.
diff --git a/gdb/testsuite/gdb.base/start-cpp.exp b/gdb/testsuite/gdb.base/start-cpp.exp
index 63b6ec006ca..4e77a23f196 100644
--- a/gdb/testsuite/gdb.base/start-cpp.exp
+++ b/gdb/testsuite/gdb.base/start-cpp.exp
@@ -13,10 +13,7 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if { [use_gdb_stub] } {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile .cc
 
diff --git a/gdb/testsuite/gdb.base/start.exp b/gdb/testsuite/gdb.base/start.exp
index a0c8c8c41c1..8560107b779 100644
--- a/gdb/testsuite/gdb.base/start.exp
+++ b/gdb/testsuite/gdb.base/start.exp
@@ -13,10 +13,7 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if { [use_gdb_stub] } {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile
 
diff --git a/gdb/testsuite/gdb.base/startup-with-shell.exp b/gdb/testsuite/gdb.base/startup-with-shell.exp
index e99bfe47ee3..c33704ef939 100644
--- a/gdb/testsuite/gdb.base/startup-with-shell.exp
+++ b/gdb/testsuite/gdb.base/startup-with-shell.exp
@@ -16,10 +16,7 @@ 
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # This test doesn't make sense on native-gdbserver.
-if { [use_gdb_stub] } {
-    untested "not supported"
-    return
-}
+require !use_gdb_stub
 
 # There's no easy way to set environment variables on remote targets
 # (via dejagnu) yet.
diff --git a/gdb/testsuite/gdb.base/testenv.exp b/gdb/testsuite/gdb.base/testenv.exp
index 7f1e58fee31..c3d769a739d 100644
--- a/gdb/testsuite/gdb.base/testenv.exp
+++ b/gdb/testsuite/gdb.base/testenv.exp
@@ -20,9 +20,7 @@ 
 
 # Can't pass environment variables to the inferior if when we connect,
 # the inferior is already running.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 standard_testfile .c
 
diff --git a/gdb/testsuite/gdb.base/watchpoint-hw.exp b/gdb/testsuite/gdb.base/watchpoint-hw.exp
index 785f949efe9..09eaa341a54 100644
--- a/gdb/testsuite/gdb.base/watchpoint-hw.exp
+++ b/gdb/testsuite/gdb.base/watchpoint-hw.exp
@@ -13,10 +13,7 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if { [use_gdb_stub] } {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 require !skip_hw_watchpoint_tests
 
diff --git a/gdb/testsuite/gdb.btrace/multi-inferior.exp b/gdb/testsuite/gdb.btrace/multi-inferior.exp
index 1354ae10819..90ab76d0d24 100644
--- a/gdb/testsuite/gdb.btrace/multi-inferior.exp
+++ b/gdb/testsuite/gdb.btrace/multi-inferior.exp
@@ -24,10 +24,7 @@ 
 
 require !skip_btrace_tests
 
-if { [use_gdb_stub] } {
-    unsupported "test creates multiple inferiors"
-    return -1
-}
+require !use_gdb_stub
 
 standard_testfile
 if [prepare_for_testing "failed to prepare" $testfile {} {debug}] {
diff --git a/gdb/testsuite/gdb.dwarf2/main-subprogram.exp b/gdb/testsuite/gdb.dwarf2/main-subprogram.exp
index ad714d2f29b..0ad0469e5f6 100644
--- a/gdb/testsuite/gdb.dwarf2/main-subprogram.exp
+++ b/gdb/testsuite/gdb.dwarf2/main-subprogram.exp
@@ -17,10 +17,7 @@  load_lib dwarf.exp
 # This test can only be run on targets which support DWARF-4 and use gas.
 require dwarf2_support
 
-if { [use_gdb_stub] } {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile .c -dw.S
 
diff --git a/gdb/testsuite/gdb.mi/mi-exec-run.exp b/gdb/testsuite/gdb.mi/mi-exec-run.exp
index 01f52e22578..d1b014574fa 100644
--- a/gdb/testsuite/gdb.mi/mi-exec-run.exp
+++ b/gdb/testsuite/gdb.mi/mi-exec-run.exp
@@ -28,10 +28,7 @@  set MIFLAGS "-i=mi"
 
 # The purpose of this testcase is to test the -exec-run command. If we
 # cannot use it, then there is no point in running this testcase.
-if [use_gdb_stub] {
-     untested "cannot use -exec-run command"
-     return -1
-}
+require !use_gdb_stub
 
 standard_testfile mi-start.c
 
diff --git a/gdb/testsuite/gdb.mi/mi-start.exp b/gdb/testsuite/gdb.mi/mi-start.exp
index 767ba2c19a6..322c2cced1f 100644
--- a/gdb/testsuite/gdb.mi/mi-start.exp
+++ b/gdb/testsuite/gdb.mi/mi-start.exp
@@ -19,10 +19,7 @@  set MIFLAGS "-i=mi"
 # The purpose of this testcase is to test the --start option of
 # the -exec-run command. If we cannot use the -exec-run command,
 # then there is no point in running this testcase...
-if [use_gdb_stub] {
-     untested "cannot use -exec-run command"
-     return -1
-}
+require !use_gdb_stub
 
 gdb_exit
 if [mi_gdb_start] {
diff --git a/gdb/testsuite/gdb.mi/user-selected-context-sync.exp b/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
index 9eec083068b..1ff35229741 100644
--- a/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
+++ b/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
@@ -41,10 +41,7 @@  standard_testfile
 
 # Multiple inferiors are needed, therefore only native gdb and extended
 # gdbserver modes are supported.
-if [use_gdb_stub] {
-    untested "using gdb stub"
-    return
-}
+require !use_gdb_stub
 
 set compile_options "debug pthreads"
 if {[build_executable $testfile.exp $testfile ${srcfile} ${compile_options}] == -1} {
diff --git a/gdb/testsuite/gdb.multi/attach-while-running.exp b/gdb/testsuite/gdb.multi/attach-while-running.exp
index 276e1fdb661..a8890dca21f 100644
--- a/gdb/testsuite/gdb.multi/attach-while-running.exp
+++ b/gdb/testsuite/gdb.multi/attach-while-running.exp
@@ -36,10 +36,7 @@ 
 
 standard_testfile
 
-if [use_gdb_stub] {
-    unsupported "test requires running"
-    return
-}
+require !use_gdb_stub
 
 if { [build_executable "failed to prepare" ${testfile} ${srcfile}] } {
     return
diff --git a/gdb/testsuite/gdb.multi/dummy-frame-restore.exp b/gdb/testsuite/gdb.multi/dummy-frame-restore.exp
index 0cd1cf5a414..836740d61e2 100644
--- a/gdb/testsuite/gdb.multi/dummy-frame-restore.exp
+++ b/gdb/testsuite/gdb.multi/dummy-frame-restore.exp
@@ -17,9 +17,7 @@  standard_testfile .c
 set executable ${testfile}
 
 # The plain remote target can't do multiple inferiors.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug}]} {
     return -1
diff --git a/gdb/testsuite/gdb.multi/multi-arch-exec.exp b/gdb/testsuite/gdb.multi/multi-arch-exec.exp
index 7899c223553..b1bffb03fd1 100644
--- a/gdb/testsuite/gdb.multi/multi-arch-exec.exp
+++ b/gdb/testsuite/gdb.multi/multi-arch-exec.exp
@@ -19,9 +19,7 @@ 
 set testfile "multi-arch-exec"
 
 # The plain remote target can't do multiple inferiors.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 # The 64-bit compile may succeed for i386-linux, but gdb won't be able
 # to load the file.
diff --git a/gdb/testsuite/gdb.multi/multi-arch.exp b/gdb/testsuite/gdb.multi/multi-arch.exp
index a15b0217a9e..0f6bf82b3f5 100644
--- a/gdb/testsuite/gdb.multi/multi-arch.exp
+++ b/gdb/testsuite/gdb.multi/multi-arch.exp
@@ -19,9 +19,7 @@ 
 set testfile "multi-arch"
 
 # The plain remote target can't do multiple inferiors.
-if [use_gdb_stub] {
-    return
-}
+require !use_gdb_stub
 
 # The 64-bit compile may succeed for i386-linux, but gdb won't be able
 # to load the file.
diff --git a/gdb/testsuite/gdb.multi/multi-exit.exp b/gdb/testsuite/gdb.multi/multi-exit.exp
index 752192fbc89..6e198783112 100644
--- a/gdb/testsuite/gdb.multi/multi-exit.exp
+++ b/gdb/testsuite/gdb.multi/multi-exit.exp
@@ -24,9 +24,7 @@ 
 
 standard_testfile
 
-if {[use_gdb_stub]} {
-    return 0
-}
+require !use_gdb_stub
 
 if {[build_executable "failed to prepare" $testfile $srcfile]} {
     return -1
diff --git a/gdb/testsuite/gdb.multi/multi-kill.exp b/gdb/testsuite/gdb.multi/multi-kill.exp
index 1474faf8dd0..8783fa0063e 100644
--- a/gdb/testsuite/gdb.multi/multi-kill.exp
+++ b/gdb/testsuite/gdb.multi/multi-kill.exp
@@ -24,9 +24,7 @@ 
 
 standard_testfile
 
-if {[use_gdb_stub]} {
-    return 0
-}
+require !use_gdb_stub
 
 if {[build_executable "failed to prepare" $testfile $srcfile {debug}]} {
     return -1
diff --git a/gdb/testsuite/gdb.multi/run-only-second-inf.exp b/gdb/testsuite/gdb.multi/run-only-second-inf.exp
index b94689d0bfa..704a9b40556 100644
--- a/gdb/testsuite/gdb.multi/run-only-second-inf.exp
+++ b/gdb/testsuite/gdb.multi/run-only-second-inf.exp
@@ -20,9 +20,7 @@ 
 
 standard_testfile
 
-if {[use_gdb_stub]} {
-    return 0
-}
+require !use_gdb_stub
 
 if {[build_executable "failed to prepare" $testfile $srcfile {debug}]} {
     return -1
diff --git a/gdb/testsuite/gdb.multi/start-inferior-specific.exp b/gdb/testsuite/gdb.multi/start-inferior-specific.exp
index 45e8e8e2cc5..d103a8643d2 100644
--- a/gdb/testsuite/gdb.multi/start-inferior-specific.exp
+++ b/gdb/testsuite/gdb.multi/start-inferior-specific.exp
@@ -25,9 +25,7 @@ 
 
 standard_testfile .c -other.c
 
-if { [use_gdb_stub] } {
-    return
-}
+require !use_gdb_stub
 
 set srcfile_other ${srcfile2}
 set binfile_other ${binfile}-other
diff --git a/gdb/testsuite/gdb.multi/tids-gid-reset.exp b/gdb/testsuite/gdb.multi/tids-gid-reset.exp
index 27474b19e36..910df46e51f 100644
--- a/gdb/testsuite/gdb.multi/tids-gid-reset.exp
+++ b/gdb/testsuite/gdb.multi/tids-gid-reset.exp
@@ -52,10 +52,7 @@  with_test_prefix "single-inferior" {
 
 # For the following tests, multiple inferiors are needed, therefore
 # non-extended gdbserver is not supported.
-if [use_gdb_stub] {
-    untested "using gdb stub"
-    return
-}
+require !use_gdb_stub
 
 # Test with multiple inferiors.  This time, since we restart inferior
 # 1 while inferior 2 still has threads, then the new thread 1.1 should
diff --git a/gdb/testsuite/gdb.multi/tids.exp b/gdb/testsuite/gdb.multi/tids.exp
index 44face83860..d274bc15228 100644
--- a/gdb/testsuite/gdb.multi/tids.exp
+++ b/gdb/testsuite/gdb.multi/tids.exp
@@ -22,10 +22,7 @@  standard_testfile
 # Multiple inferiors are needed, therefore both native and extended
 # gdbserver modes are supported.  Only non-extended gdbserver is not
 # supported.
-if [use_gdb_stub] {
-    untested "using gdb stub"
-    return
-}
+require !use_gdb_stub
 
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} {pthreads debug}] } {
     return -1
diff --git a/gdb/testsuite/gdb.multi/watchpoint-multi.exp b/gdb/testsuite/gdb.multi/watchpoint-multi.exp
index 121d1e8a660..00437c195ef 100644
--- a/gdb/testsuite/gdb.multi/watchpoint-multi.exp
+++ b/gdb/testsuite/gdb.multi/watchpoint-multi.exp
@@ -18,10 +18,7 @@  set executable ${testfile}
 
 # Multiple inferiors are needed, therefore both native and extended gdbserver
 # modes are supported.  Only non-extended gdbserver is not supported.
-if [use_gdb_stub] {
-    untested "using gdb stub"
-    return
-}
+require !use_gdb_stub
 
 # Do not use simple hardware watchpoints ("watch") as its false hit may be
 # unnoticed by GDB if it reads it still has the same value.
diff --git a/gdb/testsuite/gdb.python/py-events.exp b/gdb/testsuite/gdb.python/py-events.exp
index ce9342afaff..a06904bcbb3 100644
--- a/gdb/testsuite/gdb.python/py-events.exp
+++ b/gdb/testsuite/gdb.python/py-events.exp
@@ -13,9 +13,7 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-if [use_gdb_stub] {
-    return 0
-}
+require !use_gdb_stub
 
 load_lib gdb-python.exp
 
diff --git a/gdb/testsuite/gdb.threads/attach-into-signal.exp b/gdb/testsuite/gdb.threads/attach-into-signal.exp
index 96878d5e6a0..c2b8ffebf65 100644
--- a/gdb/testsuite/gdb.threads/attach-into-signal.exp
+++ b/gdb/testsuite/gdb.threads/attach-into-signal.exp
@@ -17,8 +17,8 @@ 
 # This file was created by Jan Kratochvil <jan.kratochvil@redhat.com>.
 
 # This test only works on Linux
-if { ![isnative] || [is_remote host] || [use_gdb_stub]
-     || ![istarget *-linux*] } {
+require !use_gdb_stub
+if { ![isnative] || [is_remote host] || ![istarget *-linux*] } {
     return
 }
 
diff --git a/gdb/testsuite/gdb.threads/attach-slow-waitpid.exp b/gdb/testsuite/gdb.threads/attach-slow-waitpid.exp
index 93b1d88c0dc..aa9488af8a6 100644
--- a/gdb/testsuite/gdb.threads/attach-slow-waitpid.exp
+++ b/gdb/testsuite/gdb.threads/attach-slow-waitpid.exp
@@ -37,8 +37,8 @@ 
 # during the attach phase.
 
 # This test only works on Linux
-if { ![isnative] || [is_remote host] || [use_gdb_stub]
-     || ![istarget *-linux*] } {
+require !use_gdb_stub
+if { ![isnative] || [is_remote host] || ![istarget *-linux*] } {
     return
 }
 
diff --git a/gdb/testsuite/gdb.threads/attach-stopped.exp b/gdb/testsuite/gdb.threads/attach-stopped.exp
index ef3617cc57d..320c304bb7a 100644
--- a/gdb/testsuite/gdb.threads/attach-stopped.exp
+++ b/gdb/testsuite/gdb.threads/attach-stopped.exp
@@ -18,8 +18,8 @@ 
 # This file was updated by Jan Kratochvil <jan.kratochvil@redhat.com>.
 
 # This test only works on Linux
-if { ![isnative] || [is_remote host] || [use_gdb_stub]
-     || ![istarget *-linux*] } {
+require !use_gdb_stub
+if { ![isnative] || [is_remote host] || ![istarget *-linux*] } {
     return
 }
 
diff --git a/gdb/testsuite/gdb.threads/vfork-multi-inferior.exp b/gdb/testsuite/gdb.threads/vfork-multi-inferior.exp
index 22a1476eaac..bca4d2572b4 100644
--- a/gdb/testsuite/gdb.threads/vfork-multi-inferior.exp
+++ b/gdb/testsuite/gdb.threads/vfork-multi-inferior.exp
@@ -25,10 +25,7 @@ 
 # To catch the bug, this test verifies that we can hit a breakpoint after a
 # vfork call, while a second inferior runs in the background.
 
-if [use_gdb_stub] {
-    unsupported "test uses multiple inferiors"
-    return
-}
+require !use_gdb_stub
 
 standard_testfile .c -sleep.c
 
diff --git a/gdb/testsuite/gdb.tui/corefile-run.exp b/gdb/testsuite/gdb.tui/corefile-run.exp
index 219ebadadae..b64ade1035c 100644
--- a/gdb/testsuite/gdb.tui/corefile-run.exp
+++ b/gdb/testsuite/gdb.tui/corefile-run.exp
@@ -29,7 +29,8 @@  if { [prepare_for_testing "failed to prepare" $testfile $srcfile debug] } {
 }
 
 # Only run on native boards.
-if { [use_gdb_stub] || [target_info gdb_protocol] == "extended-remote" } {
+require !use_gdb_stub
+if { [target_info gdb_protocol] == "extended-remote" } {
     untested "not supported"
     return
 }