Borrow textflags.h for go1.3 support

Docker-DCO-1.1-Signed-off-by: Josh Hawn <[email protected]> (github: jlhawn)

Author: Josh Hawn

sha256/sha256block_amd64.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "textflag.h"
+#include "../textflag.h"
 
 // SHA256 block routine. See sha256block.go for Go equivalent.
 //

sha512/sha512block_amd64.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "textflag.h"
+#include "../textflag.h"
 
 // SHA512 block routine. See sha512block.go for Go equivalent.
 //

textflag.h

@@ -0,0 +1,23 @@
+// Copyright 2013 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file defines flags attached to various functions
+// and data objects.  The compilers, assemblers, and linker must
+// all agree on these values.
+
+// Don't profile the marked routine.  This flag is deprecated.
+#define NOPROF	1
+// It is ok for the linker to get multiple of these symbols.  It will
+// pick one of the duplicates to use.
+#define DUPOK	2
+// Don't insert stack check preamble.
+#define NOSPLIT	4
+// Put this data in a read-only section.
+#define RODATA	8
+// This data contains no pointers.
+#define NOPTR	16
+// This is a wrapper function and should not count as disabling 'recover'.
+#define WRAPPER 32
+// This function uses its incoming context register.
+#define NEEDCTXT 64