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/* *********************************************************************
* Broadcom Common Firmware Environment (CFE)
*
* Hyperspace Subroutines File: lib_hssubr.S
*
* Little stub routines to allow access to KXSEG from 32-bit progs.
*
* Author: Mitch Lichtenberg (mitch@sibyte.com)
*
*********************************************************************
*
* Copyright 2000,2001,2002,2003
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and
* copied only in accordance with the following terms and
* conditions. Subject to these conditions, you may download,
* copy, install, use, modify and distribute modified or unmodified
* copies of this software in source and/or binary form. No title
* or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce
* and retain this copyright notice and list of conditions
* as they appear in the source file.
*
* 2) No right is granted to use any trade name, trademark, or
* logo of Broadcom Corporation. The "Broadcom Corporation"
* name may not be used to endorse or promote products derived
* from this software without the prior written permission of
* Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
* SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
* PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR 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), EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
********************************************************************* */
#include "sbmips.h"
#include "mipsmacros.h"
#include "cpu_config.h" /* for definition of HAZARD */
/* *********************************************************************
* hs_read8 - read 8-bit bytes
********************************************************************* */
LEAF(hs_read8)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
lbu v0,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_read8)
/* *********************************************************************
* hs_read16 - read 16-bit shorts
********************************************************************* */
LEAF(hs_read16)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
lhu v0,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_read16)
/* *********************************************************************
* hs_read32 - read 32-bit ints
********************************************************************* */
LEAF(hs_read32)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
lw v0,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_read32)
/* *********************************************************************
* hs_read64 - read 64-bit longs
********************************************************************* */
LEAF(hs_read64)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
ld v0,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_read64)
/* *********************************************************************
* hs_write8 - write 8-bit bytes
********************************************************************* */
LEAF(hs_write8)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
sb a1,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_write8)
/* *********************************************************************
* hs_write16 - write 16-bit shorts
********************************************************************* */
LEAF(hs_write16)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
sh a1,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_write16)
/* *********************************************************************
* hs_write32 - write 32-bit longs
********************************************************************* */
LEAF(hs_write32)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
sw a1,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_write32)
/* *********************************************************************
* hs_write64 - write 64-bit longs
********************************************************************* */
LEAF(hs_write64)
mfc0 t2,C0_SR
or t1,t2,M_SR_KX
mtc0 t1,C0_SR
HAZARD
sd a1,(a0)
mtc0 t2,C0_SR
HAZARD
j ra
END(hs_write64)
/* *********************************************************************
* End
********************************************************************* */
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