[PATCH 6/7] Disable tracepoint support for aarch32

[Yao Qi <qiyaoltc@gmail.com>]

We only support tracepoint for aarch64.  Although arm program can run
on aarch64, GDBserver doesn't support tracepoint for it.

gdb/gdbserver:

2015-07-31  Yao Qi  <yao.qi@linaro.org>

	* linux-aarch64-low.c (aarch64_supports_tracepoints): Return 0
	if current_thread is 32 bit.
---
 gdb/gdbserver/linux-aarch64-low.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index 90d2b43..da472ae 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -701,7 +701,13 @@ aarch64_regs_info (void)
 static int
 aarch64_supports_tracepoints (void)
 {
-  return 1;
+  if (current_thread == NULL)
+    return 1;
+  else
+    {
+      /* We don't support tracepoints on aarch32 now.  */
+      return is_64bit_tdesc ();
+    }
 }
 
 /* Implementation of linux_target_ops method "supports_range_stepping".  */
-- 
1.9.1