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/*-
* Copyright (c) 2000-2001 Doug Rabson
* 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.
*
* $FreeBSD$
*/
#include <machine/asm.h>
.data
.global ia64_pal_entry
ia64_pal_entry: .quad 0
.text
/*
* struct ia64_pal_result ia64_call_pal_static(u_int64_t proc,
* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
*/
ENTRY(ia64_call_pal_static, 4)
.regstk 4,5,0,0
palret = loc0
entry = loc1
rpsave = loc2
pfssave = loc3
psrsave = loc4
alloc pfssave=ar.pfs,4,5,0,0
;;
mov rpsave=rp
movl entry=@gprel(ia64_pal_entry)
1: mov palret=ip // for return address
;;
add entry=entry,gp
mov psrsave=psr
mov r28=in0 // procedure number
;;
ld8 entry=[entry] // read entry point
mov r29=in1 // copy arguments
mov r30=in2
mov r31=in3
;;
mov b6=entry
add palret=2f-1b,palret // calculate return address
;;
mov b0=palret
rsm psr.i // disable interrupts
;;
br.cond.sptk b6 // call into firmware
2: mov psr.l=psrsave
mov rp=rpsave
mov ar.pfs=pfssave
;;
srlz.d
br.ret.sptk rp
END(ia64_call_pal_static)
#ifdef _KERNEL
/*
* struct ia64_pal_result ia64_call_pal_static_physical(u_int64_t proc,
* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
*/
ENTRY(ia64_call_pal_static_physical, 4)
.regstk 4,5,0,0
palret = loc0
entry = loc1
rpsave = loc2
pfssave = loc3
psrsave = loc4
alloc pfssave=ar.pfs,4,5,0,0
;;
mov rpsave=rp
movl entry=@gprel(ia64_pal_entry)
1: mov palret=ip // for return address
;;
add entry=entry,gp
mov r28=in0 // procedure number
;;
ld8 entry=[entry] // read entry point
mov r29=in1 // copy arguments
mov r30=in2
mov r31=in3
;;
dep entry=0,entry,61,3 // physical address
dep palret=0,palret,61,3 // physical address
br.call.sptk.many rp=ia64_physical_mode
mov psrsave=ret0
;;
mov b6=entry
add palret=2f-1b,palret // calculate return address
;;
mov b0=palret
br.cond.sptk b6 // call into firmware
;;
2: mov r14=psrsave
;;
br.call.sptk.many rp=ia64_change_mode
;;
mov rp=rpsave
mov ar.pfs=pfssave
;;
br.ret.sptk rp
END(ia64_call_pal_static_physical)
#endif
/*
* struct ia64_pal_result ia64_call_pal_stacked(u_int64_t proc,
* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
*/
ENTRY(ia64_call_pal_stacked, 4)
.regstk 4,4,4,0
entry = loc0
rpsave = loc1
pfssave = loc2
psrsave = loc3
alloc pfssave=ar.pfs,4,4,4,0
;;
mov rpsave=rp
movl entry=@gprel(ia64_pal_entry)
;;
add entry=entry,gp
mov psrsave=psr
mov r28=in0 // procedure number
mov out0=in0
;;
ld8 entry=[entry] // read entry point
mov out1=in1 // copy arguments
mov out2=in2
mov out3=in3
;;
mov b6=entry
;;
rsm psr.i // disable interrupts
;;
br.call.sptk.many rp=b6 // call into firmware
mov psr.l=psrsave
mov rp=rpsave
mov ar.pfs=pfssave
;;
srlz.d
br.ret.sptk rp
END(ia64_call_pal_stacked)
#ifdef _KERNEL
/*
* struct ia64_pal_result ia64_call_pal_stacked_physical(u_int64_t proc,
* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
*/
ENTRY(ia64_call_pal_stacked_physical, 4)
.regstk 4,4,4,0
entry = loc0
rpsave = loc1
pfssave = loc2
psrsave = loc3
alloc pfssave=ar.pfs,4,4,4,0
;;
mov rpsave=rp
movl entry=@gprel(ia64_pal_entry)
;;
add entry=entry,gp
mov r28=in0 // procedure number
mov out0=in0
;;
ld8 entry=[entry] // read entry point
mov out1=in1 // copy arguments
mov out2=in2
mov out3=in3
;;
dep entry=0,entry,61,3 // physical address
br.call.sptk.many rp=ia64_physical_mode
mov psrsave=ret0
;;
mov b6=entry
;;
br.call.sptk.many rp=b6 // call into firmware
;;
mov r14=psrsave
;;
br.call.sptk.many rp=ia64_change_mode
;;
mov rp=rpsave
mov ar.pfs=pfssave
;;
br.ret.sptk rp
END(ia64_call_pal_stacked_physical)
#endif
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