| /* Copyright (C) 2001 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| Modified for use in uClibc (C) 2007 Axis Communications AB. |
| Minimal modifications: include path name and #undef of WORD_COPY_FWD/BWD |
| |
| 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 "../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 all the static functions in generic/memcopy.c; these macros |
| are only used in memmove.c since we have arch-specific mempcpy, memcpy and |
| memset. */ |
| |
| #undef OP_T_THRES |
| #define OP_T_THRES OPSIZ |
| |
| #undef WORD_COPY_FWD |
| #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) |
| |
| #undef WORD_COPY_BWD |
| #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) |