patch-2.4.4 linux/arch/ia64/lib/copy_page.S

• Lines: 73
• Date: Thu Apr 5 12:51:47 2001
• Orig file: v2.4.3/linux/arch/ia64/lib/copy_page.S
• Orig date: Thu Jun 22 07:09:44 2000

diff -u --recursive --new-file v2.4.3/linux/arch/ia64/lib/copy_page.S linux/arch/ia64/lib/copy_page.S
@@ -3,14 +3,14 @@
  * Optimized version of the standard copy_page() function
  *
  * Based on comments from ddd. Try not to overflow write buffer.
- * 
+ *
  * Inputs:
- * 	in0:	address of target page
+ *	in0:	address of target page
  *	in1:	address of source page
  * Output:
- * 	no return value
+ *	no return value
  *
- * Copyright (C) 1999 Hewlett-Packard Co
+ * Copyright (C) 1999, 2001 Hewlett-Packard Co
  * Copyright (C) 1999 Stephane Eranian <eranian@hpl.hp.com>
  */
 #include <asm/asmmacro.h>
@@ -28,28 +28,23 @@
 #define tgt1		r22
 #define tgt2		r23
 
-	.text
-	.psr abi64
-	.psr lsb
-	.lsb
-
 GLOBAL_ENTRY(copy_page)
-	UNW(.prologue)
-	UNW(.save ar.pfs, saved_pfs)
+	.prologue
+	.save ar.pfs, saved_pfs
 	alloc saved_pfs=ar.pfs,3,((2*PIPE_DEPTH+7)&~7),0,((2*PIPE_DEPTH+7)&~7)
 
 	.rotr t1[PIPE_DEPTH], t2[PIPE_DEPTH]
 	.rotp p[PIPE_DEPTH]
 
-	UNW(.save ar.lc, saved_lc)
+	.save ar.lc, saved_lc
 	mov saved_lc=ar.lc	// save ar.lc ahead of time
-	UNW(.save pr, saved_pr)
+	.save pr, saved_pr
 	mov saved_pr=pr		// rotating predicates are preserved
 				// resgisters we must save.
-	UNW(.body)
+	.body
 
-	mov src1=in1		// initialize 1st stream source 
-	adds src2=8,in1		// initialize 2nd stream source 
+	mov src1=in1		// initialize 1st stream source
+	adds src2=8,in1		// initialize 2nd stream source
 	mov lcount=PAGE_SIZE/16-1 // as many 16bytes as there are on a page
 				  // -1 is because br.ctop is repeat/until
 
@@ -72,7 +67,7 @@
 	//
 	// The initialization of the prolog is done via the predicate registers:
 	// the choice of EPI DEPENDS on the depth of the pipeline (n).
-	// When lc > 0 pr63=1 and it is fed back into pr16 and pr16-pr62 
+	// When lc > 0 pr63=1 and it is fed back into pr16 and pr16-pr62
 	// are then shifted right at every iteration,
 	// Thus by initializing pr16=1 and the rest to 0 before the loop
 	// we get EPI=1 after n iterations.
@@ -87,7 +82,7 @@
 				// stores but no loads anymore
 	;;
 	mov pr=saved_pr,0xffffffffffff0000	// restore predicates
-	mov ar.pfs=saved_pfs	// restore ar.ec 
+	mov ar.pfs=saved_pfs	// restore ar.ec
 	mov ar.lc=saved_lc	// restore saved lc
 	br.ret.sptk.few rp	// bye...
 END(copy_page)