X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Ftile%2Flib%2Fstring-endian.h;h=2e49cbfe937173637ec713eb1ad60e12f74b3896;hb=c53c70a90fdce3e7a53a0412abf7cc2b2a645988;hp=c0eed7ce69c31b03c1574c37ffb60d95ea78f463;hpb=dd78bc11fb2050b6a3990d0421feca4c68ca4335;p=pandora-kernel.git

diff --git a/arch/tile/lib/string-endian.h b/arch/tile/lib/string-endian.h
index c0eed7ce69c3..2e49cbfe9371 100644
--- a/arch/tile/lib/string-endian.h
+++ b/arch/tile/lib/string-endian.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011 Tilera Corporation. All Rights Reserved.
+ * Copyright 2013 Tilera Corporation. All Rights Reserved.
  *
  *   This program is free software; you can redistribute it and/or
  *   modify it under the terms of the GNU General Public License
@@ -31,3 +31,14 @@
 #define CFZ(x) __insn_clz(x)
 #define REVCZ(x) __insn_ctz(x)
 #endif
+
+/*
+ * Create eight copies of the byte in a uint64_t.  Byte Shuffle uses
+ * the bytes of srcB as the index into the dest vector to select a
+ * byte.  With all indices of zero, the first byte is copied into all
+ * the other bytes.
+ */
+static inline uint64_t copy_byte(uint8_t byte)
+{
+	return __insn_shufflebytes(byte, 0, 0);
+}