diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/x86/boot/copy.S | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/x86/boot/copy.S')
| -rw-r--r-- | kernel/arch/x86/boot/copy.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/kernel/arch/x86/boot/copy.S b/kernel/arch/x86/boot/copy.S new file mode 100644 index 000000000..1eb7d298b --- /dev/null +++ b/kernel/arch/x86/boot/copy.S @@ -0,0 +1,87 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright 2007 rPath, Inc. - All Rights Reserved + * + * This file is part of the Linux kernel, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <linux/linkage.h> + +/* + * Memory copy routines + */ + + .code16 + .text + +GLOBAL(memcpy) + pushw %si + pushw %di + movw %ax, %di + movw %dx, %si + pushw %cx + shrw $2, %cx + rep; movsl + popw %cx + andw $3, %cx + rep; movsb + popw %di + popw %si + retl +ENDPROC(memcpy) + +GLOBAL(memset) + pushw %di + movw %ax, %di + movzbl %dl, %eax + imull $0x01010101,%eax + pushw %cx + shrw $2, %cx + rep; stosl + popw %cx + andw $3, %cx + rep; stosb + popw %di + retl +ENDPROC(memset) + +GLOBAL(copy_from_fs) + pushw %ds + pushw %fs + popw %ds + calll memcpy + popw %ds + retl +ENDPROC(copy_from_fs) + +GLOBAL(copy_to_fs) + pushw %es + pushw %fs + popw %es + calll memcpy + popw %es + retl +ENDPROC(copy_to_fs) + +#if 0 /* Not currently used, but can be enabled as needed */ +GLOBAL(copy_from_gs) + pushw %ds + pushw %gs + popw %ds + calll memcpy + popw %ds + retl +ENDPROC(copy_from_gs) + +GLOBAL(copy_to_gs) + pushw %es + pushw %gs + popw %es + calll memcpy + popw %es + retl +ENDPROC(copy_to_gs) +#endif |