Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/sparc64/lib/U3copy_to_user.S b/arch/sparc64/lib/U3copy_to_user.S
new file mode 100644
index 0000000..f337f22
--- /dev/null
+++ b/arch/sparc64/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; \
+ .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"