diff options
Diffstat (limited to 'sysdeps/cris/memcopy.h')
| -rw-r--r-- | sysdeps/cris/memcopy.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/cris/memcopy.h b/sysdeps/cris/memcopy.h new file mode 100644 index 0000000000..7bcf63451d --- /dev/null +++ b/sysdeps/cris/memcopy.h @@ -0,0 +1,57 @@ +/* Copyright (C) 2001 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sysdeps/generic/memcopy.h> + +/* We override the word-copying macros, partly because misalignment in one + pointer isn't cause for a special function, partly because we want to + get rid of wordcopy.c; these macros are only used in memmove.c (and + it's sibling bcopy) since we have arch-specific mempcpy, memcpy and + memset. */ + +#undef OP_T_THRES +#define OP_T_THRES OPSIZ + +#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \ + do \ + { \ + unsigned long enddst_bp = dst_bp + nbytes - (nbytes % OPSIZ); \ + nbytes_left = (nbytes % OPSIZ); \ + while (dst_bp < (unsigned long) enddst_bp) \ + { \ + op_t x = *(op_t *) src_bp; \ + src_bp += sizeof x; \ + *(op_t *) dst_bp = x; \ + dst_bp += sizeof x; \ + } \ + } while (0) + +#define WORD_COPY_BWD(dst_bp, src_bp, nbytes_left, nbytes) \ + do \ + { \ + unsigned long enddst_bp = dst_bp - nbytes + (nbytes % OPSIZ); \ + nbytes_left = (nbytes % OPSIZ); \ + while (dst_bp > enddst_bp) \ + { \ + op_t x; \ + src_bp -= sizeof x; \ + x = *(op_t *) src_bp; \ + dst_bp -= sizeof x; \ + *(op_t *) dst_bp = x; \ + } \ + } while (0) |