gdb/testsuite: gdb.mi/mi-nonstop-exit.exp: enable non-stop using GDBFLAGS

When running

    make check TESTS="gdb.mi/mi-nonstop-exit.exp" RUNTESTFLAGS="--target_board=native-extended-gdbserver"

We get:

    220^error,msg="Unexpected vCont reply in non-stop mode: T05swbreak:;06:60d5ffffff7f0000;07:d0d2ffffff7f0000;10:5b57fdf7ff7f0000;thread:p2a4eed.2a4eed;core    :4;"^M
    (gdb) ^M
    UNRESOLVED: gdb.mi/mi-nonstop-exit.exp: first run: unable to start target

This is because non-stop is enabled using "-gdb-set non-stop 1".  This
doesn't work with the native-extended-gdbserver board, because with that
board GDB connects to GDBserver as soon as it's started.  Non-stop needs
to be enabled before connecting.

The usual pattern to follow is to set non-stop on the command line, like
gdb.mi/mi-nonstop.exp does.  Change the non-stop MI tests to use that
pattern.

The results diff when running gdb.mi/*.exp is:

    -# of expected passes           2877
    +# of expected passes           2938
     # of unexpected failures       34
     # of expected failures         8
     # of known failures            13
     # of unresolved testcases      4
     # of unsupported tests         1
    -# of duplicate test names      34
    +# of duplicate test names      35

gdb/testsuite/ChangeLog:

	* gdb.mi/mi-nonstop-exit.exp: Enable non-stop through GDBFLAGS.
	* gdb.mi/mi-ns-stale-regcache.exp: Likewise.
	* gdb.mi/mi-nsintrall.exp: Likewise.
	* gdb.mi/mi-nsmoribund.exp: Likewise.
	* gdb.mi/mi-nsthrexec.exp: Likewise.
	* gdb.mi/mi-watch-nonstop.exp: Likewise.

Change-Id: Ic2736bedea8d448eee8c2b534d26b2427f6b4d27

7 files changed, 33 insertions, 12 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 4722846..1deb7a0 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,14 @@
 2020-11-18  Simon Marchi  <simon.marchi@polymtl.ca>
 
+	* gdb.mi/mi-nonstop-exit.exp: Enable non-stop through GDBFLAGS.
+	* gdb.mi/mi-ns-stale-regcache.exp: Likewise.
+	* gdb.mi/mi-nsintrall.exp: Likewise.
+	* gdb.mi/mi-nsmoribund.exp: Likewise.
+	* gdb.mi/mi-nsthrexec.exp: Likewise.
+	* gdb.mi/mi-watch-nonstop.exp: Likewise.
+
+2020-11-18  Simon Marchi  <simon.marchi@polymtl.ca>
+
 	* lib/mi-support.exp (mi_run_cmd_full): Use unresovled instead
 	of perror.
 
diff --git a/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp b/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
index 3e58754..566b11e 100644
--- a/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
+++ b/gdb/testsuite/gdb.mi/mi-nonstop-exit.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp b/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
index ebbdb41..fe0bd48 100644
--- a/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
+++ b/gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp
@@ -44,9 +44,11 @@ if {[gdb_compile "$srcdir/$subdir/$srcfile" \
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsintrall.exp b/gdb/testsuite/gdb.mi/mi-nsintrall.exp
index aa0e81c..e76a9ac 100644
--- a/gdb/testsuite/gdb.mi/mi-nsintrall.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsintrall.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsmoribund.exp b/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
index 3e99b5f..73f1be5 100644
--- a/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsmoribund.exp
@@ -31,9 +31,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-nsthrexec.exp b/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
index 6f4800a..da98639 100644
--- a/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
+++ b/gdb/testsuite/gdb.mi/mi-nsthrexec.exp
@@ -36,9 +36,11 @@ if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" $binfile executable $option
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async
 
diff --git a/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp b/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
index 6b56f38..d887fe5 100644
--- a/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
+++ b/gdb/testsuite/gdb.mi/mi-watch-nonstop.exp
@@ -43,9 +43,11 @@ if {[gdb_compile "$srcdir/$subdir/$srcfile" $binfile executable {debug}] != "" }
     return -1
 }
 
-mi_clean_restart $binfile
+save_vars { GDBFLAGS } {
+    append GDBFLAGS " -ex \"set non-stop on\""
+    mi_clean_restart $binfile
+}
 
-mi_gdb_test "-gdb-set non-stop 1" ".*"
 mi_gdb_test "-gdb-set mi-async 1" ".*"
 mi_detect_async