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)