There's no 'mv' shell command for handling overlapping src and dst regions, and there's no point introducing one, when we can just make the existing 'cp' command DTRT in all cases. memmove() should at most be a few instructions more then memcpy() (to detect the appropriate direction to do the copy), which is of course completely in the noise with all the string processing that a shell command does.
Reviewed-by: Simon Glass sjg@chromium.org Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk --- cmd/mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmd/mem.c b/cmd/mem.c index 66c2d36a148..c696b92a274 100644 --- a/cmd/mem.c +++ b/cmd/mem.c @@ -361,7 +361,7 @@ static int do_mem_cp(struct cmd_tbl *cmdtp, int flag, int argc, } #endif
- memcpy(dst, src, count * size); + memmove(dst, src, count * size);
unmap_sysmem(src); unmap_sysmem(dst);