| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2001 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | Modified for use in uClibc (C) 2007 Axis Communications AB. |
| 5 | Minimal modifications: include path name and #undef of WORD_COPY_FWD/BWD |
| 6 | |
| 7 | The GNU C Library is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Library General Public License as |
| 9 | published by the Free Software Foundation; either version 2 of the |
| 10 | License, or (at your option) any later version. |
| 11 | |
| 12 | The GNU C Library is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Library General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Library General Public |
| 18 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
| 19 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "../generic/memcopy.h" |
| 23 | |
| 24 | /* We override the word-copying macros, partly because misalignment in one |
| 25 | pointer isn't cause for a special function, partly because we want to |
| 26 | get rid of all the static functions in generic/memcopy.c; these macros |
| 27 | are only used in memmove.c since we have arch-specific mempcpy, memcpy and |
| 28 | memset. */ |
| 29 | |
| 30 | #undef OP_T_THRES |
| 31 | #define OP_T_THRES OPSIZ |
| 32 | |
| 33 | #undef WORD_COPY_FWD |
| 34 | #define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \ |
| 35 | do \ |
| 36 | { \ |
| 37 | unsigned long enddst_bp = dst_bp + nbytes - (nbytes % OPSIZ); \ |
| 38 | nbytes_left = (nbytes % OPSIZ); \ |
| 39 | while (dst_bp < (unsigned long) enddst_bp) \ |
| 40 | { \ |
| 41 | op_t x = *(op_t *) src_bp; \ |
| 42 | src_bp += sizeof x; \ |
| 43 | *(op_t *) dst_bp = x; \ |
| 44 | dst_bp += sizeof x; \ |
| 45 | } \ |
| 46 | } while (0) |
| 47 | |
| 48 | #undef WORD_COPY_BWD |
| 49 | #define WORD_COPY_BWD(dst_bp, src_bp, nbytes_left, nbytes) \ |
| 50 | do \ |
| 51 | { \ |
| 52 | unsigned long enddst_bp = dst_bp - nbytes + (nbytes % OPSIZ); \ |
| 53 | nbytes_left = (nbytes % OPSIZ); \ |
| 54 | while (dst_bp > enddst_bp) \ |
| 55 | { \ |
| 56 | op_t x; \ |
| 57 | src_bp -= sizeof x; \ |
| 58 | x = *(op_t *) src_bp; \ |
| 59 | dst_bp -= sizeof x; \ |
| 60 | *(op_t *) dst_bp = x; \ |
| 61 | } \ |
| 62 | } while (0) |