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 d9b6e63834678a6c7f791f3cbc67331a2806fcd1..61c58e7ca3cfcfe381d1b19bf504691cfc9b3052 100644 (file)
--- 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
+}