Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 48 insertions, 0 deletions

diff --git a/roms/SLOF/board-js2x/slof/helper.fs b/roms/SLOF/board-js2x/slof/helper.fs
new file mode 100644
index 000000000..d2f19e650
--- /dev/null
+++ b/roms/SLOF/board-js2x/slof/helper.fs
@@ -0,0 +1,48 @@
+\ *****************************************************************************
+\ * Copyright (c) 2004, 2008 IBM Corporation
+\ * All rights reserved.
+\ * This program and the accompanying materials
+\ * are made available under the terms of the BSD License
+\ * which accompanies this distribution, and is available at
+\ * http://www.opensource.org/licenses/bsd-license.php
+\ *
+\ * Contributors:
+\ *     IBM Corporation - initial implementation
+\ ****************************************************************************/
+
+: slof-build-id  ( -- str len )
+   flash-header 10 + dup from-cstring a min
+;
+
+: slof-revision s" 001" ;
+
+: read-version-and-date
+   flash-header 0= IF
+   s"  " encode-string
+   ELSE
+   flash-header 10 + 10
+   here swap rmove
+   here 10
+   s" , " $cat
+   bdate2human $cat encode-string THEN
+;
+
+: invert-region ( addr len -- )
+   2dup or 7 and CASE
+      0 OF 3 rshift 0 ?DO dup dup rx@ -1 xor swap rx! xa1+ LOOP ENDOF
+      4 OF 2 rshift 0 ?DO dup dup rl@ -1 xor swap rl! la1+ LOOP ENDOF
+      3 and
+      2 OF 1 rshift 0 ?DO dup dup rw@ -1 xor swap rw! wa1+ LOOP ENDOF
+      dup OF 0 ?DO dup dup rb@ -1 xor swap rb! 1+ LOOP ENDOF
+   ENDCASE
+   drop
+;
+
+\ count the number of bits equal 1
+\ the idea is to clear in each step the least significant bit
+\ v&(v-1) does exactly this, so count the steps until v == 0
+: cnt-bits  ( 64-bit-value -- #bits=1 )
+    dup IF
+        41 1 DO dup 1- and dup 0= IF drop i LEAVE THEN LOOP
+    THEN
+;