mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 08:40:53 +07:00
e1858b2a21
Code Aurora Forum (CAF) is becoming a part of Linux Foundation Labs. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
186 lines
3.2 KiB
ArmAsm
186 lines
3.2 KiB
ArmAsm
/*
|
|
* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
/* Numerology:
|
|
* WXYZ
|
|
* W: width in bytes
|
|
* X: Load=0, Store=1
|
|
* Y: Location 0=preamble,8=loop,9=epilog
|
|
* Z: Location=0,handler=9
|
|
*/
|
|
.text
|
|
.global FUNCNAME
|
|
.type FUNCNAME, @function
|
|
.p2align 5
|
|
FUNCNAME:
|
|
{
|
|
p0 = cmp.gtu(bytes,#0)
|
|
if (!p0.new) jump:nt .Ldone
|
|
r3 = or(dst,src)
|
|
r4 = xor(dst,src)
|
|
}
|
|
{
|
|
p1 = cmp.gtu(bytes,#15)
|
|
p0 = bitsclr(r3,#7)
|
|
if (!p0.new) jump:nt .Loop_not_aligned_8
|
|
src_dst_sav = combine(src,dst)
|
|
}
|
|
|
|
{
|
|
loopcount = lsr(bytes,#3)
|
|
if (!p1) jump .Lsmall
|
|
}
|
|
p3=sp1loop0(.Loop8,loopcount)
|
|
.Loop8:
|
|
8080:
|
|
8180:
|
|
{
|
|
if (p3) memd(dst++#8) = d_dbuf
|
|
d_dbuf = memd(src++#8)
|
|
}:endloop0
|
|
8190:
|
|
{
|
|
memd(dst++#8) = d_dbuf
|
|
bytes -= asl(loopcount,#3)
|
|
jump .Lsmall
|
|
}
|
|
|
|
.Loop_not_aligned_8:
|
|
{
|
|
p0 = bitsclr(r4,#7)
|
|
if (p0.new) jump:nt .Lalign
|
|
}
|
|
{
|
|
p0 = bitsclr(r3,#3)
|
|
if (!p0.new) jump:nt .Loop_not_aligned_4
|
|
p1 = cmp.gtu(bytes,#7)
|
|
}
|
|
|
|
{
|
|
if (!p1) jump .Lsmall
|
|
loopcount = lsr(bytes,#2)
|
|
}
|
|
p3=sp1loop0(.Loop4,loopcount)
|
|
.Loop4:
|
|
4080:
|
|
4180:
|
|
{
|
|
if (p3) memw(dst++#4) = w_dbuf
|
|
w_dbuf = memw(src++#4)
|
|
}:endloop0
|
|
4190:
|
|
{
|
|
memw(dst++#4) = w_dbuf
|
|
bytes -= asl(loopcount,#2)
|
|
jump .Lsmall
|
|
}
|
|
|
|
.Loop_not_aligned_4:
|
|
{
|
|
p0 = bitsclr(r3,#1)
|
|
if (!p0.new) jump:nt .Loop_not_aligned
|
|
p1 = cmp.gtu(bytes,#3)
|
|
}
|
|
|
|
{
|
|
if (!p1) jump .Lsmall
|
|
loopcount = lsr(bytes,#1)
|
|
}
|
|
p3=sp1loop0(.Loop2,loopcount)
|
|
.Loop2:
|
|
2080:
|
|
2180:
|
|
{
|
|
if (p3) memh(dst++#2) = w_dbuf
|
|
w_dbuf = memuh(src++#2)
|
|
}:endloop0
|
|
2190:
|
|
{
|
|
memh(dst++#2) = w_dbuf
|
|
bytes -= asl(loopcount,#1)
|
|
jump .Lsmall
|
|
}
|
|
|
|
.Loop_not_aligned: /* Works for as small as one byte */
|
|
p3=sp1loop0(.Loop1,bytes)
|
|
.Loop1:
|
|
1080:
|
|
1180:
|
|
{
|
|
if (p3) memb(dst++#1) = w_dbuf
|
|
w_dbuf = memub(src++#1)
|
|
}:endloop0
|
|
/* Done */
|
|
1190:
|
|
{
|
|
memb(dst) = w_dbuf
|
|
jumpr r31
|
|
r0 = #0
|
|
}
|
|
|
|
.Lsmall:
|
|
{
|
|
p0 = cmp.gtu(bytes,#0)
|
|
if (p0.new) jump:nt .Loop_not_aligned
|
|
}
|
|
.Ldone:
|
|
{
|
|
r0 = #0
|
|
jumpr r31
|
|
}
|
|
.falign
|
|
.Lalign:
|
|
1000:
|
|
{
|
|
if (p0.new) w_dbuf = memub(src)
|
|
p0 = tstbit(src,#0)
|
|
if (!p1) jump .Lsmall
|
|
}
|
|
1100:
|
|
{
|
|
if (p0) memb(dst++#1) = w_dbuf
|
|
if (p0) bytes = add(bytes,#-1)
|
|
if (p0) src = add(src,#1)
|
|
}
|
|
2000:
|
|
{
|
|
if (p0.new) w_dbuf = memuh(src)
|
|
p0 = tstbit(src,#1)
|
|
if (!p1) jump .Lsmall
|
|
}
|
|
2100:
|
|
{
|
|
if (p0) memh(dst++#2) = w_dbuf
|
|
if (p0) bytes = add(bytes,#-2)
|
|
if (p0) src = add(src,#2)
|
|
}
|
|
4000:
|
|
{
|
|
if (p0.new) w_dbuf = memw(src)
|
|
p0 = tstbit(src,#2)
|
|
if (!p1) jump .Lsmall
|
|
}
|
|
4100:
|
|
{
|
|
if (p0) memw(dst++#4) = w_dbuf
|
|
if (p0) bytes = add(bytes,#-4)
|
|
if (p0) src = add(src,#4)
|
|
jump FUNCNAME
|
|
}
|
|
.size FUNCNAME,.-FUNCNAME
|