From: Yao Qi <yao.qi@linaro.org>
Date: Thu, 21 Jul 2016 11:12:18 +0000 (+0100)
Subject: Support vCont s and S actions with software single step
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=21536b367ce73eed103e1389b5f45010f0c96bbb;p=binutils-gdb.git

Support vCont s and S actions with software single step

GDBserver with software single step should be able to claim supporting
vCont s and S actions, so that GDB knows the remote target can do
single step.  It doesn't matter to GDB that the single step in the
remote target is done via hardware or software.

gdb/gdbserver:

2016-07-21  Yao Qi  <yao.qi@linaro.org>

	* server.c (handle_v_requests): Support s and S actions
	if target_supports_software_single_step return true.
---

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index e55bae08166..1592a11c52c 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,8 @@
+2016-07-21  Yao Qi  <yao.qi@linaro.org>
+
+	* server.c (handle_v_requests): Support s and S actions
+	if target_supports_software_single_step return true.
+
 2016-07-21  Yao Qi  <yao.qi@linaro.org>
 
 	* linux-low.c (resume_stopped_resumed_lwps): If resume request
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index 18517bccafc..6d6cb0923e8 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -2958,12 +2958,15 @@ handle_v_requests (char *own_buf, int packet_len, int *new_packet_len)
 	{
 	  strcpy (own_buf, "vCont;c;C;t");
 
-	  if (target_supports_hardware_single_step () || !vCont_supported)
+	  if (target_supports_hardware_single_step ()
+	      || target_supports_software_single_step ()
+	      || !vCont_supported)
 	    {
-	      /* If target supports hardware single step, add actions s
-		 and S to the list of supported actions.  On the other
-		 hand, if GDB doesn't request the supported vCont actions
-		 in qSupported packet, add s and S to the list too.  */
+	      /* If target supports single step either by hardware or by
+		 software, add actions s and S to the list of supported
+		 actions.  On the other hand, if GDB doesn't request the
+		 supported vCont actions in qSupported packet, add s and
+		 S to the list too.  */
 	      own_buf = own_buf + strlen (own_buf);
 	      strcpy (own_buf, ";s;S");
 	    }