diff options
| author |   kettenis <kettenis@openbsd.org> | 2017-01-24 08:09:05 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2017-01-24 08:09:05 +0000 |
| commit | 249415e0143d372032bbbb017e8451c2888c674f (patch) | |
| tree | 3c5623aa41410b8a985bc7929b7b111ca2493d47 /sys/lib/libkern/memcpy.c | |
| parent | pfind(9) has been renamed to tfind(9); (diff) | |
| download | wireguard-openbsd-249415e0143d372032bbbb017e8451c2888c674f.tar.xz wireguard-openbsd-249415e0143d372032bbbb017e8451c2888c674f.zip | |
In preparation of compiling our kernels with -ffreestanding, explicitly map
a few performance-critical functions to compiler builtins. Since the
builtins supported by gcc3, gcc4 and clang are not the same, there are
(unfortunately) some compiler checks to make sure we only do the mapping
for builtins that are actually supported by the compiler.
ok jca@, tom@, guenther@
Diffstat (limited to 'sys/lib/libkern/memcpy.c')
| -rw-r--r-- | sys/lib/libkern/memcpy.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/lib/libkern/memcpy.c b/sys/lib/libkern/memcpy.c index 962a967a057..fb4a15ecebe 100644 --- a/sys/lib/libkern/memcpy.c +++ b/sys/lib/libkern/memcpy.c @@ -1,4 +1,4 @@ -/* $OpenBSD: memcpy.c,v 1.3 2013/06/12 16:44:22 deraadt Exp $ */ +/* $OpenBSD: memcpy.c,v 1.4 2017/01/24 08:09:05 kettenis Exp $ */ /*- * Copyright (c) 1993 @@ -32,6 +32,8 @@ #include <sys/types.h> #include <sys/systm.h> +#undef memcpy + /* * This is designed to be small, not fast. */ |