From d55d9b284ece556a488aa35cc511c3d39dfe39bb Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sun, 8 Jun 2025 02:52:09 -0400 Subject: usr: libc: Add memcpy() in string.h Signed-off-by: Ian Moffett --- lib/libc/include/string.h | 2 ++ lib/libc/src/string/memcpy.c | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) create mode 100644 lib/libc/src/string/memcpy.c diff --git a/lib/libc/include/string.h b/lib/libc/include/string.h index 60cde56..3ca408f 100644 --- a/lib/libc/include/string.h +++ b/lib/libc/include/string.h @@ -35,6 +35,8 @@ size_t strlen(const char *s); void *memset(void *dst, int c, size_t n); int memcmp(const void *s1, const void *s2, size_t n); + +void *memcpy(void *dest, const void *src, size_t n); int strcmp(const char *s1, const char *s2); #endif /* !_STRING_H_ */ diff --git a/lib/libc/src/string/memcpy.c b/lib/libc/src/string/memcpy.c new file mode 100644 index 0000000..a9bcbe9 --- /dev/null +++ b/lib/libc/src/string/memcpy.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include + +void * +memcpy(void *dest, const void *src, size_t n) +{ + for (size_t i = 0; i < n; ++i) { + ((char *)dest)[i] = ((char *)src)[i]; + } + + return dest; +} -- cgit v1.2.3