| /* | |
| * Copyright (C) 2009 H. Peter Anvin <hpa@zytor.com> | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License | |
| * as published by the Free Software Foundation; either version 2 | |
| * of the License, or (at your option) any later version. | |
| * | |
| * This program is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| * GNU General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU General Public License | |
| * along with this program; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
| * | |
| * You can also choose to distribute this program under the terms of | |
| * the Unmodified Binary Distribution Licence (as given in the file | |
| * COPYING.UBDL), provided that you have satisfied its requirements. | |
| */ | |
| FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ) | |
| .section ".note.GNU-stack" | |
| .code16 | |
| .arch i386 | |
| /**************************************************************************** | |
| * Set/clear CF on the stack as appropriate, assumes stack is as it should | |
| * be immediately before IRET | |
| **************************************************************************** | |
| */ | |
| .section ".text16", "ax", @progbits | |
| .globl patch_cf | |
| patch_cf: | |
| pushw %bp | |
| movw %sp, %bp | |
| setc 8(%bp) /* Set/reset CF; clears PF, AF, ZF, SF */ | |
| popw %bp | |
| ret | |
| .size patch_cf, . - patch_cf |