From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001 From: Kacper Date: Sun, 7 Dec 2025 20:10:31 +0100 Subject: Add build system scaffolding and libc headers --- lib/libc/string/memmove.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 lib/libc/string/memmove.c (limited to 'lib/libc/string/memmove.c') diff --git a/lib/libc/string/memmove.c b/lib/libc/string/memmove.c new file mode 100644 index 00000000..88968185 --- /dev/null +++ b/lib/libc/string/memmove.c @@ -0,0 +1,21 @@ +#include +#include + +void *memmove(void *dst, const void *src, size_t n) +{ + uint8_t *d = dst; + const uint8_t *s = src; + + if (d == s || n == 0) + return dst; + + if ((uintptr_t)d < (uintptr_t)s) { + for (size_t i = 0; i < n; i++) + d[i] = s[i]; + } else { + for (size_t i = n; i != 0; i--) + d[i - 1] = s[i - 1]; + } + + return dst; +} -- cgit v1.2.3