svn commit: r254634 - head/sys/cddl/dev/dtrace/powerpc

[Justin Hibbits]

Author: jhibbits
Date: Thu Aug 22 02:54:20 2013
New Revision: 254634
URL: http://svnweb.freebsd.org/changeset/base/254634

Log:
  Make dtrace_copy() actually work on PowerPC.  Although unused currently,
  it may be used in the future by dtrace.

Modified:
  head/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S

Modified: head/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S
==============================================================================
--- head/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S	Thu Aug 22 01:54:52 2013	(r254633)
+++ head/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S	Thu Aug 22 02:54:20 2013	(r254634)
@@ -125,13 +125,13 @@ void
 dtrace_copy(uintptr_t src, uintptr_t dest, size_t size)
 */
 ASENTRY_NOPROF(dtrace_copy)
-	addme	%r7,%r3
-	addme	%r8,%r4
+	subi	%r7,%r3,1
+	subi	%r8,%r4,1
+	mtctr	%r5
 1:
 	lbzu	%r3,1(%r7)
 	stbu	%r3,1(%r8)
-	addme	%r5,%r5
-	beq	2f
+	bdnz	1b
 2:
 	blr
 END(dtrace_copy)