freebsd-src/sys/boot/pc98/btx/lib/btxsys.s

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#
# Copyright (c) 1998 Robert Nordier
# All rights reserved.
#
# Redistribution and use in source and binary forms are freely
# permitted provided that the above copyright notice and this
# paragraph and the following disclaimer are duplicated in all
# such forms.
#
# This software is provided "AS IS" and without any express or
# implied warranties, including, without limitation, the implied
# warranties of merchantability and fitness for a particular
# purpose.
#
# $Id: btxsys.s,v 1.1 1998/09/14 10:37:00 rnordier Exp $
#
# BTX system calls.
#
#
# Globals.
#
.global __exit
.global __exec
#
# Constants.
#
.set INT_SYS,0x30 # Interrupt number
#
# System call: exit
#
__exit: xorl %eax,%eax # BTX system
int $INT_SYS # call 0x0
#
# System call: exec
#
__exec: movl $0x1,%eax # BTX system
int $INT_SYS # call 0x1