[SPARC64]: Niagara optimized memcpy() and copy_{to,from}_user().
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/lib/NGpatch.S b/arch/sparc64/lib/NGpatch.S
new file mode 100644
index 0000000..f13ec9e
--- /dev/null
+++ b/arch/sparc64/lib/NGpatch.S
@@ -0,0 +1,32 @@
+/* NGpatch.S: Patch Ultra-I routines with Niagara variant.
+ *
+ * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
+ */
+
+#define BRANCH_ALWAYS 0x10680000
+#define NOP 0x01000000
+#define NG_DO_PATCH(OLD, NEW) \
+ sethi %hi(NEW), %g1; \
+ or %g1, %lo(NEW), %g1; \
+ sethi %hi(OLD), %g2; \
+ or %g2, %lo(OLD), %g2; \
+ sub %g1, %g2, %g1; \
+ sethi %hi(BRANCH_ALWAYS), %g3; \
+ srl %g1, 2, %g1; \
+ or %g3, %lo(BRANCH_ALWAYS), %g3; \
+ or %g3, %g1, %g3; \
+ stw %g3, [%g2]; \
+ sethi %hi(NOP), %g3; \
+ or %g3, %lo(NOP), %g3; \
+ stw %g3, [%g2 + 0x4]; \
+ flush %g2;
+
+ .globl niagara_patch_copyops
+ .type niagara_patch_copyops,#function
+niagara_patch_copyops:
+ NG_DO_PATCH(memcpy, NGmemcpy)
+ NG_DO_PATCH(___copy_from_user, NGcopy_from_user)
+ NG_DO_PATCH(___copy_to_user, NGcopy_to_user)
+ retl
+ nop
+ .size niagara_patch_copyops,.-niagara_patch_copyops