From ecfc1e39a2621cf3f2d2c67841cc31cb670326c0 Mon Sep 17 00:00:00 2001
From: drath <drath@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Tue, 21 Aug 2007 16:21:05 +0000
Subject: [PATCH] - correctly initialize start address for XScale trace buffer
 decodes in fill-once mode

git-svn-id: svn://svn.berlios.de/openocd/trunk@202 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/openocd.c       |  2 +-
 src/target/xscale.c | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/openocd.c b/src/openocd.c
index 30e63adcd..94dfa8ad6 100644
--- a/src/openocd.c
+++ b/src/openocd.c
@@ -18,7 +18,7 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-#define OPENOCD_VERSION "Open On-Chip Debugger (2007-08-17 11:00 CEST)"
+#define OPENOCD_VERSION "Open On-Chip Debugger (2007-08-21 18:30 CEST)"
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
diff --git a/src/target/xscale.c b/src/target/xscale.c
index 59f1795e2..b207dbb26 100644
--- a/src/target/xscale.c
+++ b/src/target/xscale.c
@@ -3440,6 +3440,19 @@ int xscale_handle_trace_buffer_command(struct command_context_s *cmd_ctx, char *
 		xscale->trace.buffer_fill = -1;
 	}
 	
+	if (xscale->trace.buffer_enabled)
+	{
+		/* if we enable the trace buffer in fill-once
+		 * mode we know the address of the first instruction */
+		xscale->trace.pc_ok = 1;
+		xscale->trace.current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
+	}
+	else
+	{
+		/* otherwise the address is unknown, and we have no known good PC */
+		xscale->trace.pc_ok = 0;
+	}
+	
 	command_print(cmd_ctx, "trace buffer %s (%s)", 
 		(xscale->trace.buffer_enabled) ? "enabled" : "disabled",
 		(xscale->trace.buffer_fill > 0) ? "fill" : "wrap");