patch-2.3.43 linux/arch/ia64/lib/flush.S

• Lines: 38
• Date: Sun Feb 6 18:42:40 2000
• Orig file: v2.3.42/linux/arch/ia64/lib/flush.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.42/linux/arch/ia64/lib/flush.S linux/arch/ia64/lib/flush.S
@@ -0,0 +1,37 @@
+/*
+ * Cache flushing routines.
+ *
+ * Copyright (C) 1999 Hewlett-Packard Co
+ * Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <asm/page.h>
+
+	.text
+	.psr abi64
+	.psr lsb
+	.lsb
+
+	.align 16
+	.global ia64_flush_icache_page
+	.proc ia64_flush_icache_page
+ia64_flush_icache_page:
+	alloc r2=ar.pfs,1,0,0,0
+	mov r3=ar.lc			// save ar.lc	
+	mov r8=PAGE_SIZE/64-1		// repeat/until loop
+	;;
+	mov ar.lc=r8
+	add r8=32,in0
+	;;
+.Loop1:	fc in0				// issuable on M0 only
+	add in0=64,in0
+	fc r8
+	add r8=64,r8
+	br.cloop.sptk.few .Loop1
+	;;
+	sync.i
+	;;
+	srlz.i
+	;;	
+	mov ar.lc=r3			// restore ar.lc
+	br.ret.sptk.few rp
+	.endp ia64_flush_icache_page