PERFORCE change 136933 for review

[Randall R. Stewart]

http://perforce.freebsd.org/chv.cgi?CH=136933

Change 136933 by rrs at rrs-mips2-jnpr on 2008/03/05 18:08:58

	Adds support to turn on/off the unaligned access bit.

Affected files ...

.. //depot/projects/mips2-jnpr/src/sys/mips/mips/support.S#7 edit

Differences ...

==== //depot/projects/mips2-jnpr/src/sys/mips/mips/support.S#7 (text+ko) ====

@@ -1484,3 +1484,35 @@
 	sw	zero, U_PCB_ONFAULT(t1) /* clean up */
 	j	ra
 END(casuptr)
+
+
+#ifdef TARGET_OCTEON
+/*
+ * octeon_set_unaligned(addr)
+ */
+LEAF(octeon_set_unaligned)
+	.set mips64r2
+/*	dmfc0   a1, 9, 7*/
+	.word 0x40254807
+	sd	a1, 0(a0)
+	or      a1, a1, (OCTEON_UNALIGNED_ACCESS)
+/*	dmtc0   a1, 9, 7*/
+	.word 0x40a54807
+	jr	ra
+	nop
+        .set	mips0
+END(octeon_set_unaligned)
+
+LEAF(octeon_clr_unaligned)
+	.set mips64r2
+/*	dmfc0   a1, 9, 7 */
+	.word 0x40254807
+	sd	a1, 0(a0)
+	and      a1, a1, ~(OCTEON_UNALIGNED_ACCESS)
+/*	dmtc0   a1, 9, 7 */
+	.word 0x40a54807
+	jr	ra
+	nop
+        .set	mips0
+END(octeon_clr_unaligned)
+#endif