Upload tsv earlier in remote_start_remote

In extended-remote, when GDB connects the target, but target is not
running, the TSVs are not uploaded.  When GDB attaches to a process,
the TSVs are not uploaded either.  However, GDBserver has some
builtin or predefined TSV to upload, such as $trace_timestamp.  This
bug causes $trace_timestamp is never uploaded.

gdb/

2013-06-25  Yao Qi  <yao@codesourcery.com>

        * remote.c (remote_start_remote): Move code to upload tsv
        earlier.

gdb/testsuite/

2013-06-25  Yao Qi  <yao@codesourcery.com>

	* boards/native-extended-gdbserver.exp: Set board_info
	'gdb,predefined_tsv'.
	* boards/native-gdbserver.exp: Likewise.
	* boards/native-stdio-gdbserver.exp: Likewise.
	* gdb.server/ext-attach.exp: Load trace-support.exp.  Check
	uploaded TSVs if target supports tracing.
	* gdb.trace/tsv.exp: Check uploaded TSVs if target supports
	tracing and target has predefined tsv.

gdb/doc/

2013-06-25  Yao Qi  <yao@codesourcery.com>

	* gdbint.texinfo (Testsuite): Document 'gdb,predefined_tsv'.

1 files changed, 22 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.trace/tsv.exp b/gdb/testsuite/gdb.trace/tsv.exp
index 4177d13..cd0b36b 100644
--- a/gdb/testsuite/gdb.trace/tsv.exp
+++ b/gdb/testsuite/gdb.trace/tsv.exp
@@ -188,3 +188,25 @@ gdb_test_multiple "target ctf ${tracefile}.ctf" "" {
 	check_tsv "ctf"
     }
 }
+
+# Restart.
+clean_restart ${binfile}
+
+if ![runto_main] then {
+    fail "Can't run to main"
+    return
+}
+
+# If there are predefined TSVs, test these predefined TSVs are correctly
+# uploaded.
+if [target_info exists gdb,predefined_tsv] {
+    set tsv [target_info gdb,predefined_tsv]
+
+    # Test predefined TSVs are uploaded.
+    gdb_test "info tvariables" ".*${tsv}.*" "predefined tsvs are uploaded"
+} else {
+    # Otherwise (the predefined TSVs are not defined in the board file),
+    # test there is no TSVs in GDB.
+    gdb_test "info tvariables" "No trace state variables\." \
+	"no predefined tsvs"
+}