Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / metag / lib / copy_page.S

diff --git a/kernel/arch/metag/lib/copy_page.S b/kernel/arch/metag/lib/copy_page.S
new file mode 100644 (file)
index 0000000..91f7d46
--- /dev/null
+++ b/kernel/arch/metag/lib/copy_page.S
@@ -0,0 +1,20 @@
+        ! Copyright 2007,2008 Imagination Technologies Ltd.
+
+#include <asm/page.h>
+
+        .text
+        .global        _copy_page
+        .type   _copy_page,function
+       !! D1Ar1 - to
+       !! D0Ar2 - from
+_copy_page:
+       MOV  D0FrT,#PAGE_SIZE
+$Lcopy_page_loop:
+       GETL D0Re0,D1Re0,[D0Ar2++]
+       GETL D0Ar6,D1Ar5,[D0Ar2++]
+       SETL [D1Ar1++],D0Re0,D1Re0
+       SETL [D1Ar1++],D0Ar6,D1Ar5
+       SUBS D0FrT,D0FrT,#16
+       BNZ  $Lcopy_page_loop
+       MOV  PC,D1RtP
+        .size  _copy_page,.-_copy_page