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openssl/crypto/pariscid.pl
Richard Levitte 1aa89a7a3a Unify all assembler file generators 
They now generally conform to the following argument sequence:

    script.pl "$(PERLASM_SCHEME)" [ C preprocessor arguments ... ] \
              $(PROCESSOR) <output file>

However, in the spirit of being able to use these scripts manually,
they also allow for no argument, or for only the flavour, or for only
the output file.  This is done by only using the last argument as
output file if it's a file (it has an extension), and only using the
first argument as flavour if it isn't a file (it doesn't have an
extension).

While we're at it, we make all $xlate calls the same, i.e. the $output
argument is always quoted, and we always die on error when trying to
start $xlate.

There's a perl lesson in this, regarding operator priority...

This will always succeed, even when it fails:

    open FOO, "something" || die "ERR: $!";

The reason is that '||' has higher priority than list operators (a
function is essentially a list operator and gobbles up everything
following it that isn't lower priority), and since a non-empty string
is always true, so that ends up being exactly the same as:

    open FOO, "something";

This, however, will fail if "something" can't be opened:

    open FOO, "something" or die "ERR: $!";

The reason is that 'or' has lower priority that list operators,
i.e. it's performed after the 'open' call.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9884)
2019-09-16 16:29:57 +02:00

280 lines
4.8 KiB
Perl
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#! /usr/bin/env perl
# Copyright 2009-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (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
# $output is the last argument if it looks like a file (it has an extension)
# $flavour is the first argument if it doesn't look like a file
$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
$output and open STDOUT,">$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;
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