From 67a87b936eaab25dc983e979e5a548256d1a527a Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 21 Feb 1995 08:07:34 +0000 Subject: * string/Makefile (distribute): Add pagecopy.h. * sysdeps/mach/pagecopy.h: New file. * sysdeps/generic/pagecopy.h: New file. * sysdeps/generic/memcpy.c: Include pagecopy.h; call PAGE_COPY_FWD_MAYBE first when word aligned. * sysdeps/generic/memmove.c: Likewise. --- sysdeps/generic/memcpy.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'sysdeps/generic/memcpy.c') diff --git a/sysdeps/generic/memcpy.c b/sysdeps/generic/memcpy.c index 222d358224..e1a1ade057 100644 --- a/sysdeps/generic/memcpy.c +++ b/sysdeps/generic/memcpy.c @@ -21,6 +21,7 @@ Cambridge, MA 02139, USA. */ #include #include #include +#include PTR DEFUN(memcpy, (dstpp, srcpp, len), @@ -38,10 +39,14 @@ DEFUN(memcpy, (dstpp, srcpp, len), len -= (-dstp) % OPSIZ; BYTE_COPY_FWD (dstp, srcp, (-dstp) % OPSIZ); - /* Copy from SRCP to DSTP taking advantage of the known - alignment of DSTP. Number of bytes remaining is put - in the third argumnet, i.e. in LEN. This number may - vary from machine to machine. */ + /* Copy whole pages from SRCP to DSTP by virtual address manipulation, + as much as possible. */ + + PAGE_COPY_FWD_MAYBE (dstp, srcp, len, len); + + /* Copy from SRCP to DSTP taking advantage of the known alignment of + DSTP. Number of bytes remaining is put in the third argument, + i.e. in LEN. This number may vary from machine to machine. */ WORD_COPY_FWD (dstp, srcp, len, len); -- cgit 1.4.1