Author: mcayland
Date: Mon Dec 1 21:52:15 2014
New Revision: 1328
URL: http://tracker.coreboot.org/trac/openbios/changeset/1328
Log:
package.fs: fix "child" word being called with a NULL phandle
Solaris 9 relies on an undocumented feature that calling "child" with
a NULL phandle is equivalent to using the phandle of the device tree
root node.
Make sure that we emulate the same behaviour to avoid a crash when
dereferencing a NULL pointer.
This patch fixes Solaris 9 boot on SPARC32 and is based upon a
proof-of-concept patch submitted by Artyom Tarasenko <atar4qemu(a)gmail.com>.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland(a)ilande.co.uk>
Modified:
trunk/openbios-devel/forth/device/package.fs
Modified: trunk/openbios-devel/forth/device/package.fs
==============================================================================
--- trunk/openbios-devel/forth/device/package.fs Fri Nov 14 20:17:48 2014 (r1327)
+++ trunk/openbios-devel/forth/device/package.fs Mon Dec 1 21:52:15 2014 (r1328)
@@ -49,6 +49,10 @@
;
: child ( phandle.parent -- phandle.child )
+ \ Assume phandle == 0 indicates root node (not documented but similar
+ \ behaviour to "peer"). Used by some versions of Solaris (e.g. 9).
+ ?dup if else device-tree @ then
+
>dn.child @
;
