sparc,sparc64: unify lib/

[linux-2.6-omap-h63xx.git] / arch / sparc / lib / U3copy_to_user.S

diff --git a/arch/sparc/lib/U3copy_to_user.S b/arch/sparc/lib/U3copy_to_user.S
new file mode 100644 (file)
index 0000000..2334f11
--- /dev/null
+++ b/arch/sparc/lib/U3copy_to_user.S
@@ -0,0 +1,33 @@
+/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace.
+ *
+ * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
+ */
+
+#define EX_ST(x)               \
+98:    x;                      \
+       .section .fixup;        \
+       .align 4;               \
+99:    retl;                   \
+        mov    1, %o0;         \
+       .section __ex_table,"a";\
+       .align 4;               \
+       .word 98b, 99b;         \
+       .text;                  \
+       .align 4;
+
+#define FUNC_NAME              U3copy_to_user
+#define STORE(type,src,addr)   type##a src, [addr] ASI_AIUS
+#define STORE_BLK(src,addr)    stda src, [addr] ASI_BLK_AIUS
+#define EX_RETVAL(x)           0
+
+       /* Writing to %asi is _expensive_ so we hardcode it.
+        * Reading %asi to check for KERNEL_DS is comparatively
+        * cheap.
+        */
+#define PREAMBLE                                       \
+       rd              %asi, %g1;                      \
+       cmp             %g1, ASI_AIUS;                  \
+       bne,pn          %icc, memcpy_user_stub;         \
+        nop;                                           \
+
+#include "U3memcpy.S"