diff options
Diffstat (limited to 'arch/x86/boot/copy.S')
| -rw-r--r-- | arch/x86/boot/copy.S | 62 |
1 files changed, 20 insertions, 42 deletions
diff --git a/arch/x86/boot/copy.S b/arch/x86/boot/copy.S index 11f272c6f5e9..3973a67cd04e 100644 --- a/arch/x86/boot/copy.S +++ b/arch/x86/boot/copy.S @@ -1,11 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* ----------------------------------------------------------------------- * * * 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> @@ -14,74 +12,54 @@ * Memory copy routines */ - .code16gcc + .code16 .text -GLOBAL(memcpy) +SYM_FUNC_START_NOALIGN(memcpy) pushw %si pushw %di movw %ax, %di movw %dx, %si pushw %cx shrw $2, %cx - rep; movsl + rep movsl popw %cx andw $3, %cx - rep; movsb + rep movsb popw %di popw %si - ret -ENDPROC(memcpy) + retl +SYM_FUNC_END(memcpy) -GLOBAL(memset) +SYM_FUNC_START_NOALIGN(memset) pushw %di movw %ax, %di movzbl %dl, %eax imull $0x01010101,%eax pushw %cx shrw $2, %cx - rep; stosl + rep stosl popw %cx andw $3, %cx - rep; stosb + rep stosb popw %di - ret -ENDPROC(memset) + retl +SYM_FUNC_END(memset) -GLOBAL(copy_from_fs) +SYM_FUNC_START_NOALIGN(copy_from_fs) pushw %ds pushw %fs popw %ds - call memcpy + calll memcpy popw %ds - ret -ENDPROC(copy_from_fs) + retl +SYM_FUNC_END(copy_from_fs) -GLOBAL(copy_to_fs) +SYM_FUNC_START_NOALIGN(copy_to_fs) pushw %es pushw %fs popw %es - call memcpy - popw %es - ret -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 - call memcpy - popw %ds - ret -ENDPROC(copy_from_gs) - -GLOBAL(copy_to_gs) - pushw %es - pushw %gs - popw %es - call memcpy + calll memcpy popw %es - ret -ENDPROC(copy_to_gs) -#endif + retl +SYM_FUNC_END(copy_to_fs) |