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| author | Roland McGrath <roland@gnu.org> | 1995-02-21 08:07:34 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1995-02-21 08:07:34 +0000 |
| commit | 67a87b936eaab25dc983e979e5a548256d1a527a (patch) | |
| tree | cc821a229df7ee0d081df42258c31c241b78c0ef /sysdeps/generic/memmove.c | |
| parent | 787126fe16e340c8a0c4301d4cab942973d7d85c (diff) | |
| download | glibc-67a87b936eaab25dc983e979e5a548256d1a527a.tar.gz glibc-67a87b936eaab25dc983e979e5a548256d1a527a.tar.xz glibc-67a87b936eaab25dc983e979e5a548256d1a527a.zip | |
* 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.
Diffstat (limited to 'sysdeps/generic/memmove.c')
| -rw-r--r-- | sysdeps/generic/memmove.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/generic/memmove.c b/sysdeps/generic/memmove.c index e3016819d9..8ef6f04cbe 100644 --- a/sysdeps/generic/memmove.c +++ b/sysdeps/generic/memmove.c @@ -1,6 +1,6 @@ /* memmove -- copy memory to memory until the specified number of bytes has been copied. Overlap is handled correctly. - Copyright (C) 1991 Free Software Foundation, Inc. + Copyright (C) 1991, 1995 Free Software Foundation, Inc. Contributed by Torbjorn Granlund (tege@sics.se). The GNU C Library is free software; you can redistribute it and/or @@ -21,6 +21,7 @@ Cambridge, MA 02139, USA. */ #include <ansidecl.h> #include <string.h> #include <memcopy.h> +#include <pagecopy.h> /* All this is so that bcopy.c can #include this file after defining some things. */ @@ -55,6 +56,11 @@ DEFUN(memmove, (a1, a2, len), len -= (-dstp) % OPSIZ; BYTE_COPY_FWD (dstp, srcp, (-dstp) % OPSIZ); + /* 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 argumnet, i.e. in LEN. This number may |