Renamed to .S
This commit is contained in:
parent
518afbd262
commit
71a8119df8
|
@ -1,94 +0,0 @@
|
|||
/* $NetBSD: pnpbioscall.s,v 1.1 1999/11/12 18:36:46 drochner Exp $ */
|
||||
/*
|
||||
* Copyright (c) 1999
|
||||
* Matthias Drochner. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions, and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "assym.h"
|
||||
#include <machine/asm.h>
|
||||
#include <machine/segments.h>
|
||||
|
||||
.data
|
||||
saveesp:
|
||||
.space 4
|
||||
|
||||
NENTRY(pnpbioscall)
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
/*
|
||||
* disable interrupts - our handlers can't deal with frames of the
|
||||
* segment we are calling, and the BIOS can't use our IDT anyway
|
||||
*/
|
||||
pushfl
|
||||
cli
|
||||
|
||||
/* call pnpbiostramp() */
|
||||
lcall $GSEL(GPNPBIOSTRAMP_SEL, SEL_KPL), $0
|
||||
|
||||
popfl
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
NENTRY(pnpbiostramp)
|
||||
pushl %ebx
|
||||
|
||||
/* save current stack pointer */
|
||||
movl %esp, %eax
|
||||
movl %eax, saveesp
|
||||
|
||||
/* switch to new stack */
|
||||
movl 8(%ebp), %esp /* call argument */
|
||||
movl $GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL), %eax
|
||||
mov %ax, %ss
|
||||
|
||||
/* fake the call return address (16-bit frame) */
|
||||
mov %cs, %ax
|
||||
push %ax
|
||||
movl $(1f - _C_LABEL(pnpbiostramp)), %eax
|
||||
push %ax
|
||||
|
||||
/* do a long jump */
|
||||
pushl $GSEL(GPNPBIOSCODE_SEL, SEL_KPL)
|
||||
pushl (_C_LABEL(pnpbios_entry))
|
||||
#if 1
|
||||
/* paranoia: don't pass our ds */
|
||||
movl $GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL), %eax
|
||||
mov %ax, %ds
|
||||
#endif
|
||||
lret
|
||||
|
||||
1: /* returned from BIOS call */
|
||||
movl $GSEL(GDATA_SEL, SEL_KPL), %ebx
|
||||
#if 1
|
||||
mov %bx, %ds
|
||||
#endif
|
||||
/* back to old stack */
|
||||
mov %bx, %ss
|
||||
movl saveesp, %ebx
|
||||
movl %ebx, %esp
|
||||
|
||||
popl %ebx
|
||||
lret
|
||||
.globl _C_LABEL(epnpbiostramp)
|
||||
_C_LABEL(epnpbiostramp):
|
Loading…
Reference in New Issue