2001-01-23 12:37:15 +00:00
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/*-
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* Copyright (c) 1997 Jonathan Lemon
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Functions for calling x86 BIOS functions from the BSD kernel
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*/
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#include <machine/asmacros.h>
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#include "assym.s"
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.text
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/*
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* bios32_apm98(regs, offset, segment)
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* struct bios_regs *regs;
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* u_int offset;
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* u_short segment;
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*/
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ENTRY(bios32_apm98)
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pushl %ebp
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movl 16(%esp),%ebp
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2001-04-01 07:08:13 +00:00
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mov %bp,bioscall_vector+4
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2001-01-23 12:37:15 +00:00
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movl 12(%esp),%ebp
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2001-04-01 07:08:13 +00:00
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movl %ebp,bioscall_vector
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2001-01-23 12:37:15 +00:00
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movl 8(%esp),%ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl 0(%ebp),%eax
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movl 4(%ebp),%ebx
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movl 8(%ebp),%ecx
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movl 12(%ebp),%edx
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movl 16(%ebp),%esi
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movl 20(%ebp),%edi
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pushl %ebp
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pushfl
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cli
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2001-04-01 07:08:13 +00:00
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lcall *bioscall_vector
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2001-01-23 12:37:15 +00:00
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movl %eax,%edi
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movl %edx,%esi
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lahf
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movl apm_necsmm_addr,%edx
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andl %edx,%edx
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jz 9f
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inb %dx,%al
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andl apm_necsmm_mask,%eax
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outb %al,%dx
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9:
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sti
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popl %ebp
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movl %edi,0(%ebp)
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movl %ebx,4(%ebp)
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movl %ecx,8(%ebp)
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movl %esi,12(%ebp)
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movl $0,16(%ebp) /* esi is cannot get */
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movl $0,20(%ebp) /* edi is cannot get */
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movl %edi,%eax
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andl $0x100,%eax
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popl %edi
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popl %esi
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popl %ebx
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popl %ebp
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ret
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