diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 2000-04-30 18:48:59 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 2000-04-30 18:48:59 +0000 |
| commit | 1ed239e88a57ca7211745ceff4e0d6e365ca1426 (patch) | |
| tree | c1a2ebb50773755a13d3b9c4a71f74a6caaff422 /sys/arch | |
| parent | 314bee8994b145d5f603c50e93ebc9e623d1e038 (diff) | |
Add memcpy() and memcmp() emulation by swapping the first 2 args
and then calling the b* routine. This code only gets call when the
kernel is build w/o -O* since otherwise gcc uses its own inline
routines.
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/i386/i386/locore.s | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s index 78ff759f110..d02dfe137aa 100644 --- a/sys/arch/i386/i386/locore.s +++ b/sys/arch/i386/i386/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.48 1999/03/08 23:47:26 downsj Exp $ */ +/* $OpenBSD: locore.s,v 1.49 2000/04/30 18:48:58 millert Exp $ */ /* $NetBSD: locore.s,v 1.145 1996/05/03 19:41:19 christos Exp $ */ /*- @@ -891,6 +891,32 @@ ENTRY(bcopy) cld ret +/* + * Emulate memcpy() by swapping the first two arguments and calling bcopy() + */ +ENTRY(memcpy) + pushl %esi + movl 12(%esp),%ecx + movl 16(%esp),%esi + movl %esi,12(%esp) + movl %ecx,16(%esp) + call _bcopy + popl %esi + ret + +/* + * Emulate memcmp() by swapping the first two arguments and calling bcmp() + */ +ENTRY(memcmp) + pushl %esi + movl 12(%esp),%ecx + movl 16(%esp),%esi + movl %esi,12(%esp) + movl %ecx,16(%esp) + call _bcmp + popl %esi + ret + /*****************************************************************************/ /* |