From 6fb23419e1aaca83f99a21d6b39cb3e62d31dece Mon Sep 17 00:00:00 2001
From: Marcel Telka <marcel@telka.sk>
Date: Mon, 26 Aug 2002 22:29:38 +0000
Subject: [PATCH] Added initial support for data_register.

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@113 b68d4a1b-bc3d-0410-92ed-d4ac073336b7
---
 include/jtag/data_register.h  | 42 ++++++++++++++++++++
 jtag/src/part/Makefile.am     |  1 +
 jtag/src/part/data_register.c | 73 +++++++++++++++++++++++++++++++++++
 3 files changed, 116 insertions(+)
 create mode 100644 include/jtag/data_register.h
 create mode 100644 jtag/src/part/data_register.c

diff --git a/include/jtag/data_register.h b/include/jtag/data_register.h
new file mode 100644
index 00000000..5d9cb4d1
--- /dev/null
+++ b/include/jtag/data_register.h
@@ -0,0 +1,42 @@
+/*
+ * $Id$
+ *
+ * Copyright (C) 2002 ETC s.r.o.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by Marcel Telka <marcel@telka.sk>, 2002.
+ *
+ */
+
+#ifndef JTAG_DATA_REGISTER_H
+#define	JTAG_DATA_REGISTER_H
+
+#include <jtag/register.h>
+
+typedef struct data_register data_register;
+
+struct data_register {
+	char *name;		/* (public) register name */
+	tap_register *value;	/* (public) register value */
+	tap_register *oldval;	/* (private) temporary (old) register value */
+	data_register *next;
+};
+
+data_register *data_register_alloc( const char *name, int len );
+void data_register_free( data_register *dr );
+
+#endif /* JTAG_DATA_REGISTER_H */
diff --git a/jtag/src/part/Makefile.am b/jtag/src/part/Makefile.am
index 41d076b3..35ba423b 100644
--- a/jtag/src/part/Makefile.am
+++ b/jtag/src/part/Makefile.am
@@ -26,6 +26,7 @@ noinst_LIBRARIES = libpart.a
 libpart_a_SOURCES = \
 	signal.c \
 	instruction.c \
+	data_register.c \
 	bsbit.c \
 	part.c \
 	parse.c
diff --git a/jtag/src/part/data_register.c b/jtag/src/part/data_register.c
new file mode 100644
index 00000000..40e40c2e
--- /dev/null
+++ b/jtag/src/part/data_register.c
@@ -0,0 +1,73 @@
+/*
+ * $Id$
+ *
+ * Copyright (C) 2002 ETC s.r.o.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by Marcel Telka <marcel@telka.sk>, 2002.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <jtag/data_register.h>
+
+data_register *
+data_register_alloc( const char *name, int len )
+{
+	data_register *dr;
+
+	if (!name)
+		return NULL;
+
+	dr = malloc( sizeof *dr );
+	if (!dr)
+		return NULL;
+
+	dr->name = strdup( name );
+	if (!dr->name) {
+		free( dr );
+		return NULL;
+	}
+
+	dr->value = register_alloc( len );
+	dr->oldval = register_alloc( len );
+	if (!dr->value || dr->oldval) {
+		free( dr->value );
+		free( dr->oldval );
+		free( dr->name );
+		free( dr );
+		return NULL;
+	}
+
+	dr->next = NULL;
+
+	return dr;
+}
+
+void
+data_register_free( data_register *dr )
+{
+	if (!dr)
+		return;
+
+	free( dr->name );
+	register_free( dr->value );
+	register_free( dr->oldval );
+	free( dr );
+}