From c4ee880715121ccfb2ad960673d0f5e603c60d3d Mon Sep 17 00:00:00 2001
From: oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Thu, 7 May 2009 13:04:13 +0000
Subject: [PATCH] jtag API error handling refactoring.

git-svn-id: svn://svn.berlios.de/openocd/trunk@1638 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/jtag/jtag.c |  4 ++--
 src/jtag/jtag.h | 13 +++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c
index 242eb56bf6..981f47e128 100644
--- a/src/jtag/jtag.c
+++ b/src/jtag/jtag.c
@@ -42,7 +42,7 @@
 #include <strings.h>
 #endif
 
-static void jtag_execute_queue_noclear(void);
+
 
 /* note that this is not marked as static as it must be available from outside jtag.c for those
    that implement the jtag_xxx() minidriver layer
@@ -1446,7 +1446,7 @@ int MINIDRIVER(interface_jtag_execute_queue)(void)
 	return retval;
 }
 
-static void jtag_execute_queue_noclear(void)
+void jtag_execute_queue_noclear(void)
 {
 	int retval=interface_jtag_execute_queue();
 	/* we keep the first error */
diff --git a/src/jtag/jtag.h b/src/jtag/jtag.h
index c0f94856b8..ce11d592df 100644
--- a/src/jtag/jtag.h
+++ b/src/jtag/jtag.h
@@ -700,6 +700,9 @@ int  interface_jtag_add_clocks(int num_cycles);
  */
 extern int            jtag_execute_queue(void);
 
+/* same as jtag_execute_queue() but does not clear the error flag */
+extern void jtag_execute_queue_noclear(void);
+
 /* this flag is set when an error occurs while executing the queue. cleared
  * by jtag_execute_queue()
  *
@@ -708,6 +711,16 @@ extern int            jtag_execute_queue(void);
  */
 extern int jtag_error;
 
+static __inline__ void jtag_set_error(int error)
+{
+	if ((error==ERROR_OK)||(jtag_error!=ERROR_OK))
+	{
+		/* keep first error */
+		return;
+	}
+	jtag_error=error;
+}
+
 
 
 /* can be implemented by hw+sw */
-- 
2.30.2