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