1 files changed, 37 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/generic/pagecopy.h b/REORG.TODO/sysdeps/generic/pagecopy.h
new file mode 100644
index 0000000000..3ef17070c9
--- /dev/null
+++ b/REORG.TODO/sysdeps/generic/pagecopy.h
@@ -0,0 +1,37 @@
+/* Macros for copying by pages; used in memcpy, memmove.
+   Copyright (C) 1995-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The macro PAGE_COPY_FWD_MAYBE defined in memcopy.h is used in memmove if the
+   PAGE_COPY_THRESHOLD macro is set to a non-zero value.  The default is 0,
+   that is copying by pages is not implemented.
+
+   System-specific pagecopy.h files that want to support page copying should
+   define these macros:
+
+   PAGE_COPY_THRESHOLD
+   -- A non-zero minimum size for which virtual copying by pages is worthwhile.
+
+   PAGE_SIZE
+   -- Size of a page.
+
+   PAGE_COPY_FWD (dstp, srcp, nbytes_left, nbytes)
+   -- Macro to perform the virtual copy operation.
+   The pointers will be aligned to PAGE_SIZE bytes.
+*/
+
+#define PAGE_COPY_THRESHOLD 0