Introduce mi_runto_main

This adds an mi_runto_main routine, very much like the runto_main CLI
counterpart.

Note there's already a mi_run_to_main (extra underscore in "run_to"),
but unlike its intro comment says, that does more than the CLI's
runto_main -- it also starts GDB.  I would like to eliminate that
other one by introducing a mi_clean_restart function instead.  That is
done later in the series.

gdb/testsuite/ChangeLog:

	* lib/mi-support.exp (mi_runto_main): New proc.
	(mi_run_to_main): Use it.
	* gdb.mi/mi-catch-cpp-exceptions.exp: Likewise.
	* gdb.mi/mi-var-cmd.exp: Likewise.
	* gdb.mi/mi-var-invalidate.exp: Likewise.
	* mi-var-list-children-invalid-grandchild.exp: Likewise.
	* gdb.mi/mi2-amd64-entry-value.exp: Likewise.
	* gdb.mi/new-ui-mi-sync.exp: Likewise.
	* gdb.mi/user-selected-context-sync.exp: Likewise.
	* gdb.opt/inline-cmds.exp: Likewise.
	* gdb.python/py-framefilter-mi.exp: Likewise.
	* gdb.python/py-mi.exp: Likewise.

Change-Id: I2e49ca7b0b61cea57c1202e5dfa32417e6a4403d

12 files changed, 39 insertions, 18 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 6248618451c..19b4e2b138c 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,20 @@
 2020-10-13  Pedro Alves  <pedro@palves.net>
 
+	* lib/mi-support.exp (mi_runto_main): New proc.
+	(mi_run_to_main): Use it.
+	* gdb.mi/mi-catch-cpp-exceptions.exp: Likewise.
+	* gdb.mi/mi-var-cmd.exp: Likewise.
+	* gdb.mi/mi-var-invalidate.exp: Likewise.
+	* mi-var-list-children-invalid-grandchild.exp: Likewise.
+	* gdb.mi/mi2-amd64-entry-value.exp: Likewise.
+	* gdb.mi/new-ui-mi-sync.exp: Likewise.
+	* gdb.mi/user-selected-context-sync.exp: Likewise.
+	* gdb.opt/inline-cmds.exp: Likewise.
+	* gdb.python/py-framefilter-mi.exp: Likewise.
+	* gdb.python/py-mi.exp: Likewise.
+
+2020-10-13  Pedro Alves  <pedro@palves.net>
+
 	* gdb.ada/fun_in_declare.exp: Use "runto_main" instead of
 	"runto main".
 	* gdb.ada/small_reg_param.exp: Likewise.
diff --git a/gdb/testsuite/gdb.mi/mi-catch-cpp-exceptions.exp b/gdb/testsuite/gdb.mi/mi-catch-cpp-exceptions.exp
index 40c17c68e63..14e820fa350 100644
--- a/gdb/testsuite/gdb.mi/mi-catch-cpp-exceptions.exp
+++ b/gdb/testsuite/gdb.mi/mi-catch-cpp-exceptions.exp
@@ -59,7 +59,7 @@ proc restart_for_test {} {
     mi_gdb_reinitialize_dir $srcdir/$subdir
     mi_gdb_load ${binfile}
 
-    mi_runto main
+    mi_runto_main
 
     mi_create_breakpoint \
 	"$srcfile:${main_lineno}" "break before exiting program" \
diff --git a/gdb/testsuite/gdb.mi/mi-var-cmd.exp b/gdb/testsuite/gdb.mi/mi-var-cmd.exp
index 260917a906b..c521a18bf6e 100644
--- a/gdb/testsuite/gdb.mi/mi-var-cmd.exp
+++ b/gdb/testsuite/gdb.mi/mi-var-cmd.exp
@@ -657,7 +657,7 @@ with_test_prefix "second run" {
 mi_create_varobj "L" "lsimple" "in-and-out-of-scope: create varobj"
 mi_check_varobj_value "L" "{...}" "in-and-out-of-scope: check initial value"
 
-mi_runto main
+mi_runto_main
 
 mi_gdb_test "-var-update L" \
     {\^done,changelist=\[{name="L",in_scope="false",type_changed="false",has_more="0"}\]} \
diff --git a/gdb/testsuite/gdb.mi/mi-var-invalidate.exp b/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
index d6fb7754766..bc056b92d8b 100644
--- a/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
+++ b/gdb/testsuite/gdb.mi/mi-var-invalidate.exp
@@ -70,7 +70,7 @@ mi_create_floating_varobj float_simple array "create floating variable"
 #
 mi_delete_breakpoints
 mi_gdb_load ${binfile_bis}
-mi_runto main
+mi_runto_main
 
 # Change format of floating variable immediately after reload reveals a
 # bug where gdb still uses a free'd pointer.
diff --git a/gdb/testsuite/gdb.mi/mi-var-list-children-invalid-grandchild.exp b/gdb/testsuite/gdb.mi/mi-var-list-children-invalid-grandchild.exp
index 78ad1e1e4b2..b34593546d3 100644
--- a/gdb/testsuite/gdb.mi/mi-var-list-children-invalid-grandchild.exp
+++ b/gdb/testsuite/gdb.mi/mi-var-list-children-invalid-grandchild.exp
@@ -43,7 +43,7 @@ mi_gdb_test "-interpreter-exec console \"set print object on\"" \
     "(.*=cmd-param-changed,param=\"print object\",value=\"on\".*|)\\^done" \
     "set print object on"
 
-mi_runto main
+mi_runto_main
 
 mi_continue_to_line $line_invalid_pointer_value "continue to invalid pointer value"
 
diff --git a/gdb/testsuite/gdb.mi/mi2-amd64-entry-value.exp b/gdb/testsuite/gdb.mi/mi2-amd64-entry-value.exp
index c9e5724bee3..b8d2cd16bf4 100644
--- a/gdb/testsuite/gdb.mi/mi2-amd64-entry-value.exp
+++ b/gdb/testsuite/gdb.mi/mi2-amd64-entry-value.exp
@@ -49,7 +49,7 @@ foreach name {different breakhere_different breakhere_validity breakhere_invalid
 
 # Test various kinds of `set print entry-values'.
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values no" {\^done} "no: set print entry-values"
@@ -66,7 +66,7 @@ mi_send_resuming_command "exec-continue" "no: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv",value="<optimized out>"}} .* .* {.* disp="keep"} "no: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv",arg="1",value="<optimized out>"}\]} "no: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values only" {\^done} "only: set print entry-values"
@@ -83,7 +83,7 @@ mi_send_resuming_command "exec-continue" "only: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv@entry",value="<optimized out>"}} .* .* {.* disp="keep"} "only: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv@entry",arg="1",value="<optimized out>"}\]} "only: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values preferred" {\^done} "preferred: set print entry-values"
@@ -100,7 +100,7 @@ mi_send_resuming_command "exec-continue" "preferred: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv@entry",value="<optimized out>"}} .* .* {.* disp="keep"} "preferred: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv@entry",arg="1",value="<optimized out>"}\]} "preferred: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values if-needed" {\^done} "if-needed: set print entry-values"
@@ -117,7 +117,7 @@ mi_send_resuming_command "exec-continue" "if-needed: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv",value="<optimized out>"}} .* .* {.* disp="keep"} "if-needed: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv",arg="1",value="<optimized out>"}\]} "if-needed: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values both" {\^done} "both: set print entry-values"
@@ -134,7 +134,7 @@ mi_send_resuming_command "exec-continue" "both: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv",value="<optimized out>"},{name="inv@entry",value="<optimized out>"}} .* .* {.* disp="keep"} "both: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv",arg="1",value="<optimized out>"},{name="inv@entry",arg="1",value="<optimized out>"}\]} "both: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values compact" {\^done} "compact: set print entry-values"
@@ -151,7 +151,7 @@ mi_send_resuming_command "exec-continue" "compact: invalid: continue"
 mi_expect_stop "breakpoint-hit" .* {{name="inv",value="<optimized out>"}} .* .* {.* disp="keep"} "compact: invalid: stop"
 mi_gdb_test "-stack-list-variables --all-values" {\^done,variables=\[{name="inv",arg="1",value="<optimized out>"}\]} "compact: invalid: -stack-list-variables"
 
-if {[mi_runto main] == -1} {
+if {[mi_runto_main] == -1} {
     return -1
 }
 mi_gdb_test "-gdb-set print entry-values default" {\^done} "default: set print entry-values"
diff --git a/gdb/testsuite/gdb.mi/new-ui-mi-sync.exp b/gdb/testsuite/gdb.mi/new-ui-mi-sync.exp
index a55fae67dfe..83a8d5ff4a4 100644
--- a/gdb/testsuite/gdb.mi/new-ui-mi-sync.exp
+++ b/gdb/testsuite/gdb.mi/new-ui-mi-sync.exp
@@ -63,7 +63,7 @@ proc do_test {sync_command} {
 	    return
 	}
     } else {
-	if {[mi_runto main] < 0} {
+	if {[mi_runto_main] < 0} {
 	    return
 	}
 	if {[mi_send_resuming_command_raw "123-exec-continue" $test] >= 0} {
diff --git a/gdb/testsuite/gdb.mi/user-selected-context-sync.exp b/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
index 390df005542..ed39443eb73 100644
--- a/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
+++ b/gdb/testsuite/gdb.mi/user-selected-context-sync.exp
@@ -401,7 +401,7 @@ proc_with_prefix test_setup { mode } {
     mi_gdb_reinitialize_dir $srcdir/$subdir
     mi_gdb_load $binfile
 
-    if { [mi_runto main] < 0 } {
+    if { [mi_runto_main] < 0 } {
 	fail "can't run to main"
 	return
     }
diff --git a/gdb/testsuite/gdb.opt/inline-cmds.exp b/gdb/testsuite/gdb.opt/inline-cmds.exp
index 94314fe2e4c..516d76139cd 100644
--- a/gdb/testsuite/gdb.opt/inline-cmds.exp
+++ b/gdb/testsuite/gdb.opt/inline-cmds.exp
@@ -355,7 +355,7 @@ with_test_prefix "mi" {
 	continue
     }
     mi_gdb_load ${binfile}
-    mi_runto main
+    mi_runto_main
 
     set line_number [gdb_get_line_number "set mi break here"]
     mi_gdb_test "-break-insert ${srcfile}:${line_number}" \
diff --git a/gdb/testsuite/gdb.python/py-framefilter-mi.exp b/gdb/testsuite/gdb.python/py-framefilter-mi.exp
index 244ec1a2b6b..feb58111f4b 100644
--- a/gdb/testsuite/gdb.python/py-framefilter-mi.exp
+++ b/gdb/testsuite/gdb.python/py-framefilter-mi.exp
@@ -42,7 +42,7 @@ if {[lsearch -exact [mi_get_features] python] < 0} {
     return -1
 }
 
-mi_runto main
+mi_runto_main
 
 set remote_python_file [gdb_remote_download host ${srcdir}/${subdir}/${pyfile}]
 
diff --git a/gdb/testsuite/gdb.python/py-mi.exp b/gdb/testsuite/gdb.python/py-mi.exp
index abaa380186e..7216c4141d6 100644
--- a/gdb/testsuite/gdb.python/py-mi.exp
+++ b/gdb/testsuite/gdb.python/py-mi.exp
@@ -40,7 +40,7 @@ if {[lsearch -exact [mi_get_features] python] < 0} {
     return -1
 }
 
-mi_runto main
+mi_runto_main
 
 set remote_python_file [gdb_remote_download host ${srcdir}/${subdir}/${pyfile}]
 
@@ -347,7 +347,7 @@ if {[lsearch -exact [mi_get_features] python] < 0} {
     return -1
 }
 
-mi_runto main
+mi_runto_main
 mi_continue_to_line \
     [gdb_get_line_number {break to inspect struct and union} ${srcfile}] \
     "step to breakpoint"
diff --git a/gdb/testsuite/lib/mi-support.exp b/gdb/testsuite/lib/mi-support.exp
index 0e7524ed0f6..732aed27b27 100644
--- a/gdb/testsuite/lib/mi-support.exp
+++ b/gdb/testsuite/lib/mi-support.exp
@@ -1042,7 +1042,7 @@ proc mi_run_to_main { } {
     mi_gdb_reinitialize_dir $srcdir/$subdir
     mi_gdb_load ${binfile}
 
-    mi_runto main
+    mi_runto_main
 }
 
 
@@ -1086,6 +1086,12 @@ proc mi_runto {func} {
     return [mi_runto_helper $func "run"]
 }
 
+# Just like runto_main but works with the MI interface.
+
+proc mi_runto_main {} {
+    return [mi_runto_helper "main" "run"]
+}
+
 # Next to the next statement
 # For return values, see mi_execute_to_helper