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#! /usr/bin/env perl
# Copyright 2009-2020 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
$flavour = shift;
$output = shift;
open STDOUT,">$output";
if ($flavour =~ /64/) {
$LEVEL ="2.0W";
$SIZE_T =8;
$ST ="std";
} else {
$LEVEL ="1.1";
$SIZE_T =4;
$ST ="stw";
}
$rp="%r2";
$sp="%r30";
$rv="%r28";
$code=<<___;
.LEVEL $LEVEL
.SPACE \$TEXT\$
.SUBSPA \$CODE\$,QUAD=0,ALIGN=8,ACCESS=0x2C,CODE_ONLY
.EXPORT OPENSSL_cpuid_setup,ENTRY
.ALIGN 8
OPENSSL_cpuid_setup
.PROC
.CALLINFO NO_CALLS
.ENTRY
bv ($rp)
.EXIT
nop
.PROCEND
.EXPORT OPENSSL_rdtsc,ENTRY
.ALIGN 8
OPENSSL_rdtsc
.PROC
.CALLINFO NO_CALLS
.ENTRY
mfctl %cr16,$rv
bv ($rp)
.EXIT
nop
.PROCEND
.EXPORT OPENSSL_wipe_cpu,ENTRY
.ALIGN 8
OPENSSL_wipe_cpu
.PROC
.CALLINFO NO_CALLS
.ENTRY
xor %r0,%r0,%r1
fcpy,dbl %fr0,%fr4
xor %r0,%r0,%r19
fcpy,dbl %fr0,%fr5
xor %r0,%r0,%r20
fcpy,dbl %fr0,%fr6
xor %r0,%r0,%r21
fcpy,dbl %fr0,%fr7
xor %r0,%r0,%r22
fcpy,dbl %fr0,%fr8
xor %r0,%r0,%r23
fcpy,dbl %fr0,%fr9
xor %r0,%r0,%r24
fcpy,dbl %fr0,%fr10
xor %r0,%r0,%r25
fcpy,dbl %fr0,%fr11
xor %r0,%r0,%r26
fcpy,dbl %fr0,%fr22
xor %r0,%r0,%r29
fcpy,dbl %fr0,%fr23
xor %r0,%r0,%r31
fcpy,dbl %fr0,%fr24
fcpy,dbl %fr0,%fr25
fcpy,dbl %fr0,%fr26
fcpy,dbl %fr0,%fr27
fcpy,dbl %fr0,%fr28
fcpy,dbl %fr0,%fr29
fcpy,dbl %fr0,%fr30
fcpy,dbl %fr0,%fr31
bv ($rp)
.EXIT
ldo 0($sp),$rv
.PROCEND
___
{
my $inp="%r26";
my $len="%r25";
$code.=<<___;
.EXPORT OPENSSL_cleanse,ENTRY,ARGW0=GR,ARGW1=GR
.ALIGN 8
OPENSSL_cleanse
.PROC
.CALLINFO NO_CALLS
.ENTRY
cmpib,*= 0,$len,L\$done
nop
cmpib,*>>= 15,$len,L\$ittle
ldi $SIZE_T-1,%r1
L\$align
and,*<> $inp,%r1,%r28
b,n L\$aligned
stb %r0,0($inp)
ldo -1($len),$len
b L\$align
ldo 1($inp),$inp
L\$aligned
andcm $len,%r1,%r28
L\$ot
$ST %r0,0($inp)
addib,*<> -$SIZE_T,%r28,L\$ot
ldo $SIZE_T($inp),$inp
and,*<> $len,%r1,$len
b,n L\$done
L\$ittle
stb %r0,0($inp)
addib,*<> -1,$len,L\$ittle
ldo 1($inp),$inp
L\$done
bv ($rp)
.EXIT
nop
.PROCEND
___
}
{
my ($in1,$in2,$len)=("%r26","%r25","%r24");
$code.=<<___;
.EXPORT CRYPTO_memcmp,ENTRY,ARGW0=GR,ARGW1=GR,ARGW1=GR
.ALIGN 8
CRYPTO_memcmp
.PROC
.CALLINFO NO_CALLS
.ENTRY
cmpib,*= 0,$len,L\$no_data
xor $rv,$rv,$rv
L\$oop_cmp
ldb 0($in1),%r19
ldb 0($in2),%r20
ldo 1($in1),$in1
ldo 1($in2),$in2
xor %r19,%r20,%r29
addib,*<> -1,$len,L\$oop_cmp
or %r29,$rv,$rv
sub %r0,$rv,%r29
extru %r29,0,1,$rv
L\$no_data
bv ($rp)
.EXIT
nop
.PROCEND
___
}
{
my ($out,$cnt,$max)=("%r26","%r25","%r24");
my ($tick,$lasttick)=("%r23","%r22");
my ($diff,$lastdiff)=("%r21","%r20");
$code.=<<___;
.EXPORT OPENSSL_instrument_bus,ENTRY,ARGW0=GR,ARGW1=GR
.ALIGN 8
OPENSSL_instrument_bus
.PROC
.CALLINFO NO_CALLS
.ENTRY
copy $cnt,$rv
mfctl %cr16,$tick
copy $tick,$lasttick
ldi 0,$diff
fdc 0($out)
ldw 0($out),$tick
add $diff,$tick,$tick
stw $tick,0($out)
L\$oop
mfctl %cr16,$tick
sub $tick,$lasttick,$diff
copy $tick,$lasttick
fdc 0($out)
ldw 0($out),$tick
add $diff,$tick,$tick
stw $tick,0($out)
addib,<> -1,$cnt,L\$oop
addi 4,$out,$out
bv ($rp)
.EXIT
sub $rv,$cnt,$rv
.PROCEND
.EXPORT OPENSSL_instrument_bus2,ENTRY,ARGW0=GR,ARGW1=GR
.ALIGN 8
OPENSSL_instrument_bus2
.PROC
.CALLINFO NO_CALLS
.ENTRY
copy $cnt,$rv
sub %r0,$cnt,$cnt
mfctl %cr16,$tick
copy $tick,$lasttick
ldi 0,$diff
fdc 0($out)
ldw 0($out),$tick
add $diff,$tick,$tick
stw $tick,0($out)
mfctl %cr16,$tick
sub $tick,$lasttick,$diff
copy $tick,$lasttick
L\$oop2
copy $diff,$lastdiff
fdc 0($out)
ldw 0($out),$tick
add $diff,$tick,$tick
stw $tick,0($out)
addib,= -1,$max,L\$done2
nop
mfctl %cr16,$tick
sub $tick,$lasttick,$diff
copy $tick,$lasttick
cmpclr,<> $lastdiff,$diff,$tick
ldi 1,$tick
ldi 1,%r1
xor %r1,$tick,$tick
addb,<> $tick,$cnt,L\$oop2
shladd,l $tick,2,$out,$out
L\$done2
bv ($rp)
.EXIT
add $rv,$cnt,$rv
.PROCEND
___
}
if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
=~ /GNU assembler/) {
$gnuas = 1;
}
foreach(split("\n",$code)) {
s/(\.LEVEL\s+2\.0)W/$1w/ if ($gnuas && $SIZE_T==8);
s/\.SPACE\s+\$TEXT\$/.text/ if ($gnuas && $SIZE_T==8);
s/\.SUBSPA.*// if ($gnuas && $SIZE_T==8);
s/cmpib,\*/comib,/ if ($SIZE_T==4);
s/,\*/,/ if ($SIZE_T==4);
s/\bbv\b/bve/ if ($SIZE_T==8);
print $_,"\n";
}
close STDOUT or die "error closing STDOUT: $!";
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