[commit] r912 - trunk/openbios-devel/forth/bootstrap

[repository service]

Author: mcayland
Date: Sun Oct 17 11:10:09 2010
New Revision: 912
URL: http://tracker.coreboot.org/trac/openbios/changeset/912

Log:
Fix up the new 2>r, 2r> and 2r@ words.

As pointed out by Tarl, since these are called as separate words (and not inline), we need to preserve the top-most R stack item 
as this is return address of the word itself.

Signed-off-by: Mark Cave-Ayland

Modified:
   trunk/openbios-devel/forth/bootstrap/bootstrap.fs

Modified: trunk/openbios-devel/forth/bootstrap/bootstrap.fs
==============================================================================
--- trunk/openbios-devel/forth/bootstrap/bootstrap.fs	Sun Oct 17 00:37:31 2010	(r911)
+++ trunk/openbios-devel/forth/bootstrap/bootstrap.fs	Sun Oct 17 11:10:09 2010	(r912)
@@ -411,9 +411,9 @@
 \ Note: these words are not part of the official OF specification, however
 \ they are part of the ANSI DPANS94 core extensions (see section 6.2) and
 \ so this seems an appropriate place for them.
-: 2>r swap >r >r ;
-: 2r> r> r> swap ;
-: 2r@ r> r> 2dup >r >r swap ;
+: 2>r r> -rot swap >r >r >r ;
+: 2r> r> r> r> rot >r swap ;
+: 2r@ r> r> r> 2dup >r >r rot >r swap ;

\ 
 \ 7.3.2.1 - single precision integer arithmetic (part 1)