From: Erhan Kurubas <erhan.kurubas@espressif.com>
Date: Fri, 3 Jun 2022 22:25:19 +0000 (+0200)
Subject: tcl: add get_bit & get_bitfield memory helper functions
X-Git-Url: https://git.gag.com/?p=fw%2Fopenocd;a=commitdiff_plain;h=70338509ca52a9b78c52a5d464ba2605fbaf193b

tcl: add get_bit & get_bitfield memory helper functions

Signed-off-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Change-Id: I21506526e3ebd9c3a70a25ba60bf83aee431feb6
Reviewed-on: https://review.openocd.org/c/openocd/+/7016
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
---

diff --git a/tcl/mmr_helpers.tcl b/tcl/mmr_helpers.tcl
index d9b6e6383..61c58e7ca 100644
--- a/tcl/mmr_helpers.tcl
+++ b/tcl/mmr_helpers.tcl
@@ -70,3 +70,22 @@ proc show_mmr_bitfield { MSB LSB VAL FIELDNAME FIELDVALUES } {
     }
     echo [format "%-15s: %d (0x%0*x) %s" $FIELDNAME $nval $width $nval $sval ]
 }
+
+# Give: ADDR - address of the register.
+#       BIT - bit's number.
+
+proc get_mmr_bit { ADDR BIT } {
+	set val [memread32 $ADDR]
+	set bit_val [expr {$val & [expr {1 << $BIT}]}]
+	return $bit_val
+}
+
+
+# Give: ADDR - address of the register.
+#       MSB - MSB bit's number.
+#       LSB - LSB bit's number.
+
+proc get_mmr_bitfield { ADDR MSB LSB } {
+	set rval [memread32 $ADDR]
+	return normalize_bitfield $rval $MSB $LSB
+}