Subversion Repositories HelenOS-historic

#

# Copyright (C) 2001-2004 Jakub Jermar

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# - Redistributions of source code must retain the above copyright

#   notice, this list of conditions and the following disclaimer.

# - 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.

# - The name of the author may not be used to endorse or promote products

#   derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.

#

.text

.macro cp0_read reg

    mfc0 $2,\reg

    j $31

    nop

.endm

.macro cp0_write reg

    mtc0 $4,\reg

    j $31

    nop

.endm

.set noat

.set noreorder

.set nomacro

.global cp0_index_read

.global cp0_index_write

.global cp0_random_read

.global cp0_entry_lo0_read

.global cp0_entry_lo0_write

.global cp0_entry_lo1_read

.global cp0_entry_lo1_write

.global cp0_context_read

.global cp0_context_write

.global cp0_pagemask_read

.global cp0_pagemask_write

.global cp0_wired_read

.global cp0_wired_write

.global cp0_badvaddr_read

.global cp0_count_read

.global cp0_count_write

.global cp0_hi_read

.global cp0_hi_write

.global cp0_compare_read

.global cp0_compare_write

.global cp0_status_read

.global cp0_status_write

.global cp0_cause_read

.global cp0_epc_read

.global cp0_epc_write

.global cp0_prid_read

cp0_index_read:		cp0_read $0

cp0_index_write:	cp0_write $0

cp0_random_read:	cp0_read $1

cp0_entry_lo0_read:	cp0_read $2

cp0_entry_lo0_write:	cp0_write $2

cp0_entry_lo1_read:	cp0_read $3

cp0_entry_lo1_write:	cp0_write $3

cp0_context_read:	cp0_read $4

cp0_context_write:	cp0_write $4

cp0_pagemask_read:	cp0_read $5

cp0_pagemask_write:	cp0_write $5

cp0_wired_read:		cp0_read $6

cp0_wired_write:	cp0_write $6

cp0_badvaddr_read:	cp0_read $8

cp0_count_read:		cp0_read $9

cp0_count_write:	cp0_write $9

cp0_entry_hi_read:	cp0_read $10

cp0_entry_hi_write:	cp0_write $10

cp0_compare_read:	cp0_read $11

cp0_compare_write:	cp0_write $11

cp0_status_read:	cp0_read $12

cp0_status_write:	cp0_write $12

cp0_cause_read:		cp0_read $13

cp0_epc_read:		cp0_read $14

cp0_epc_write:		cp0_write $14

cp0_prid_read:		cp0_read $15

.global tlbp

tlbp:

	tlbp

	j $31

	nop

.global tlbr

tlbr:

	tlbr

	j $31

	nop

.global tlbwi

tlbwi:

	tlbwi

	j $31

	nop

.global tlbwr

tlbwr:

	tlbwr

	j $31

	nop

.global cpu_halt

cpu_halt:

	j cpu_halt

	nop

# THIS IS USERSPACE CODE

.global utext

utext:

	j $31

	nop

utext_end:

.data

.global utext_size

utext_size:

	.long utext_end-utext