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define(_rcsid,``$OpenBSD: bcopy.m4,v 1.20 2013/06/11 18:13:38 kettenis Exp $'')dnl
dnl
dnl
dnl This is the source file for bcopy.S, spcopy.S
dnl
dnl
define(`versionmacro',substr(_rcsid,1,eval(len(_rcsid)-2)))dnl
dnl
/* This is a generated file. DO NOT EDIT. */
/*
* Generated from:
*
* versionmacro
*/
/*
* Copyright (c) 1999 Michael Shalayeff
* 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 ``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.
*
*/
dnl
dnl macro: L(`arg1',`arg2')
dnl synopsis: creates an assembly label based on args resulting in $arg1.arg2
dnl
define(`L', `$$1.$2')dnl
dnl
dnl
dnl
define(`STWS',`ifelse($5, `u',dnl
`ifelse($1, `1', `vshd $4, t`$1', r31
stbys,B,m r31, F`'4($2, $3)',
`0', `0', `vshd t`'decr($1), t`$1', r31
stws,M r31, F`'4($2, $3)')',dnl
`0', `0',
`ifelse($1, `1',
`stbys,B`'ifelse(B, `b', `,m ', `0', `0', ` ')`'t`$1', F`'4($2, $3)',
`0', `0', `stws,M t`$1', F`'4($2, $3)')')')dnl
define(`STWSS', `ifelse(`$3', `1', `dnl',
`0', `0', `STWSS($1, $2, eval($3 - 1), $4, $5)')
STWS($3, $1, $2, $4, $5)dnl
')dnl
define(`LDWSS', `ifelse(`$3', `1', `dnl',
`0', `0', `LDWSS($1, $2, eval($3 - 1))')
ldws,M F`'4($1, $2), t`'$3`'dnl
')dnl
dnl
dnl copy data in 4-words blocks
dnl
define(`hppa_blcopy',`
addi -16, $6, $6
L($1, `loop16'`$7')
dnl cache hint may not work on some hardware
dnl ldw F 32($2, $3), r0
ifelse(F, `-', `dnl
addi F`'4, $5, $5', `0', `0', `dnl')
LDWSS($2, $3, 4)
STWSS($4, $5, 3, `ret1', $7)
ifelse($7, `u', `dnl
STWS(4, $4, $5, `ret1', $7)', $7, `a', `dnl')
addib,>= -16, $6, L($1, `loop16'`$7')
ifelse($7, `a', `dnl
STWS(4, $4, $5, `ret1', $7)dnl
', $7, `u', `dnl
copy t4, ret1')')dnl
dnl
dnl copy in words
dnl
define(`STWL', `addib,<,n 12, $6, L($1, cleanup)
ifelse($7, `u', ` copy ret1, t1', $7, `a', `dnl')
L($1, word)
ldws,M F`'4($2, $3), t1
addib,>= -4, $6, L($1, word)
stws,M t1, F`'4($4, $5)
L($1, cleanup)
addib,=,n 4, $6, L($1, done)
ldws 0($2, $3), t1
add $5, $6, $5
b L($1, done)
stbys,E t1, 0($4, $5)
')
dnl
dnl
dnl parameters:
dnl $1 name
dnl $2 source space
dnl $3 source address
dnl $4 destination space
dnl $5 destination address
dnl $6 length
dnl $7 direction
dnl
define(hppa_copy,
`dnl
dnl
dnl if direction is `-' (backwards copy), adjust src, dst
dnl
ifelse($7,`-', `add $3, $6, $3
add $5, $6, $5
define(`F', `-')dnl
define(`R', `')dnl
define(`M', `mb')dnl
define(`B', `e')dnl
define(`E', `b')dnl
',dnl ifelse
`0',`0',
`define(`F', `')dnl
define(`R', `-')dnl
define(`M', `ma')dnl
define(`B', `b')dnl
define(`E', `e')dnl
')dnl ifelse
ifelse($7,`-', `', `0',`0',
` comib,>=,n 15, $6, L($1, byte)
extru $3, 31, 2, t3
extru $5, 31, 2, t4
add $6, t4, $6
comb,<> t3, t4, L($1, unaligned)
dep r0, 31, 2, $3
hppa_blcopy($1, $2, $3, $4, $5, $6, `a')
STWL($1, $2, $3, $4, $5, $6, `a')dnl
L($1, unaligned)
sub,>= t4, t3, t2
ldwm F`'4($2, $3), ret1
zdep t2, 28, 29, t1
mtsar t1
hppa_blcopy($1, $2, $3, $4, $5, $6, `u')
dnl STWL($1, $2, $3, $4, $5, $6, `u')
addib,<,n 12, $6, L($1, cleanup_un)
L($1, word_un)
ldws,M F`'4($2, $3), t1
vshd ret1, t1, t2
addib,< -4, $6, L($1, cleanup1_un)
stws,M t2, F`'4($4, $5)
ldws,M F`'4($2, $3), ret1
vshd t1, ret1, t2
addib,>= -4, $6, L($1, word_un)
stws,M t2, F`'4($4, $5)
L($1, cleanup_un)
addib,<=,n 4, $6, L($1, done)
mfctl sar, t4
add $5, $6, $5
extru t4, 28, 2, t4
sub,<= $6, t4, r0
ldws,M F`'4($2, $3), t1
vshd ret1, t1, t2
b L($1, done)
stbys,E t2, 0($4, $5)
L($1, cleanup1_un)
b L($1, cleanup_un)
copy t1, ret1
')dnl ifelse
L($1, byte)
comb,>=,n r0, $6, L($1, done)
L($1, byte_loop)
ldbs,M F`'1($2, $3), t1
addib,<> -1, $6, L($1, byte_loop)
stbs,M t1, F`'1($4, $5)
L($1, done)
')dnl
`
#undef _LOCORE
#define _LOCORE
#include <machine/asm.h>
#include <machine/frame.h>
'
ifelse(NAME, `bcopy',
`
LEAF_ENTRY(bcopy)
ALTENTRY(ovbcopy)
copy arg0, ret0
copy arg1, arg0
copy ret0, arg1
ALTENTRY(memmove)
comb,>,n arg0, arg1, L(bcopy, reverse)
ALTENTRY(memcpy)
hppa_copy(bcopy_f, sr0, arg1, sr0, arg0, arg2, `+')
bv 0(rp)
nop
L(bcopy, reverse)
hppa_copy(bcopy_r, sr0, arg1, sr0, arg0, arg2, `-')
bv 0(rp)
nop
EXIT(bcopy)
')dnl
dnl
ifelse(NAME, `spcopy',
`
#ifdef _KERNEL
#include <assym.h>
/*
* int spcopy (pa_space_t ssp, const void *src, pa_space_t dsp, void *dst,
* size_t size)
* do a space to space bcopy.
*
* assumes that spaces do not clash, otherwise we lose
*/
.import copy_on_fault, code
LEAF_ENTRY(spcopy)
ldw HPPA_FRAME_ARG(4)(sp), ret0
sub,<> r0, ret0, r0
bv r0(rp)
nop
`
ldo 64(sp), sp
stw rp, HPPA_FRAME_CRP(sp)
/* setup fault handler */
mfctl cr29, t1
ldw CI_CURPROC(t1), t3
ldil L%copy_on_fault, t2
ldw P_ADDR(t3), r2
ldo R%copy_on_fault(t2), t2
ldw PCB_ONFAULT+U_PCB(r2), r1
stw t2, PCB_ONFAULT+U_PCB(r2)
'
mtsp arg0, sr1
mtsp arg2, sr2
hppa_copy(spcopy, sr1, arg1, sr2, arg3, ret0, `+')
mtsp r0, sr1
mtsp r0, sr2
/* reset fault handler */
stw r1, PCB_ONFAULT+U_PCB(r2)
ldw HPPA_FRAME_CRP(sp), rp
ldo -64(sp), sp
bv 0(rp)
copy r0, ret0
EXIT(spcopy)
#endif
')dnl
.end
|
