1 files changed, 39 insertions, 0 deletions
diff --git a/arch/ia64/lib/flush.S b/arch/ia64/lib/flush.S
new file mode 100644
index 000000000000..29c802b19669
--- /dev/null
+++ b/arch/ia64/lib/flush.S
@@ -0,0 +1,39 @@
+/*
+ * Cache flushing routines.
+ *
+ * Copyright (C) 1999-2001 Hewlett-Packard Co
+ * Copyright (C) 1999-2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <asm/asmmacro.h>
+#include <asm/page.h>
+
+	/*
+	 * flush_icache_range(start,end)
+	 *	Must flush range from start to end-1 but nothing else (need to
+	 *	be careful not to touch addresses that may be unmapped).
+	 */
+GLOBAL_ENTRY(flush_icache_range)
+	.prologue
+	alloc r2=ar.pfs,2,0,0,0
+	sub r8=in1,in0,1
+	;;
+	shr.u r8=r8,5			// we flush 32 bytes per iteration
+	.save ar.lc, r3
+	mov r3=ar.lc			// save ar.lc
+	;;
+
+	.body
+
+	mov ar.lc=r8
+	;;
+.Loop:	fc in0				// issuable on M0 only
+	add in0=32,in0
+	br.cloop.sptk.few .Loop
+	;;
+	sync.i
+	;;
+	srlz.i
+	;;
+	mov ar.lc=r3			// restore ar.lc
+	br.ret.sptk.many rp
+END(flush_icache_range)