diff options
author | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
---|---|---|
committer | Timothy Pearson <tpearson@raptorengineering.com> | 2019-05-11 15:12:49 -0500 |
commit | 9e80202352dd49bdd9e67b8b906d86f058431505 (patch) | |
tree | 5673c17aad6e3833da8c4ff21b5a11f666ec9fbe /src/roms/SLOF/lib/libc/string/memmove.c | |
download | hqemu-master.zip hqemu-master.tar.gz |
Diffstat (limited to 'src/roms/SLOF/lib/libc/string/memmove.c')
-rw-r--r-- | src/roms/SLOF/lib/libc/string/memmove.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/roms/SLOF/lib/libc/string/memmove.c b/src/roms/SLOF/lib/libc/string/memmove.c new file mode 100644 index 0000000..3acf1a9 --- /dev/null +++ b/src/roms/SLOF/lib/libc/string/memmove.c @@ -0,0 +1,42 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include "string.h" + + +void * +memmove(void *dest, const void *src, size_t n) +{ + char *cdest; + const char *csrc; + int i; + + /* Do the buffers overlap in a bad way? */ + if (src < dest && src + n >= dest) { + /* Copy from end to start */ + cdest = dest + n - 1; + csrc = src + n - 1; + for (i = 0; i < n; i++) { + *cdest-- = *csrc--; + } + } + else { + /* Normal copy is possible */ + cdest = dest; + csrc = src; + for (i = 0; i < n; i++) { + *cdest++ = *csrc++; + } + } + + return dest; +} |