openssl/crypto/poly1305/asm/poly1305-mips.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

442 lines
9.1 KiB
Raku
Executable File

#! /usr/bin/env perl
# Copyright 2016 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
# ====================================================================
# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
# project. The module is, however, dual licensed under OpenSSL and
# CRYPTOGAMS licenses depending on where you obtain it. For further
# details see http://www.openssl.org/~appro/cryptogams/.
# ====================================================================
# Poly1305 hash for MIPS64.
#
# May 2016
#
# Numbers are cycles per processed byte with poly1305_blocks alone.
#
# IALU/gcc
# R1x000 5.64/+120% (big-endian)
# Octeon II 3.80/+280% (little-endian)
######################################################################
# There is a number of MIPS ABI in use, O32 and N32/64 are most
# widely used. Then there is a new contender: NUBI. It appears that if
# one picks the latter, it's possible to arrange code in ABI neutral
# manner. Therefore let's stick to NUBI register layout:
#
($zero,$at,$t0,$t1,$t2)=map("\$$_",(0..2,24,25));
($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7,$s8,$s9,$s10,$s11)=map("\$$_",(12..23));
($gp,$tp,$sp,$fp,$ra)=map("\$$_",(3,28..31));
#
# The return value is placed in $a0. Following coding rules facilitate
# interoperability:
#
# - never ever touch $tp, "thread pointer", former $gp [o32 can be
# excluded from the rule, because it's specified volatile];
# - copy return value to $t0, former $v0 [or to $a0 if you're adapting
# old code];
# - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary;
#
# For reference here is register layout for N32/64 MIPS ABIs:
#
# ($zero,$at,$v0,$v1)=map("\$$_",(0..3));
# ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
# ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25));
# ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23));
# ($gp,$sp,$fp,$ra)=map("\$$_",(28..31));
#
# <appro@openssl.org>
#
######################################################################
# $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;
# supported flavours are o32,n32,64,nubi32,nubi64, default is o32
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : "o32";
die "MIPS64 only" unless ($flavour =~ /64|n32/i);
$v0 = ($flavour =~ /nubi/i) ? $a0 : $t0;
$SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? "0x0003f000" : "0x00030000";
($ctx,$inp,$len,$padbit) = ($a0,$a1,$a2,$a3);
($in0,$in1,$tmp0,$tmp1,$tmp2,$tmp3,$tmp4) = ($a4,$a5,$a6,$a7,$at,$t0,$t1);
$code.=<<___;
#include "mips_arch.h"
#ifdef MIPSEB
# define MSB 0
# define LSB 7
#else
# define MSB 7
# define LSB 0
#endif
.text
.set noat
.set noreorder
.align 5
.globl poly1305_init
.ent poly1305_init
poly1305_init:
.frame $sp,0,$ra
.set reorder
sd $zero,0($ctx)
sd $zero,8($ctx)
sd $zero,16($ctx)
beqz $inp,.Lno_key
#if defined(_MIPS_ARCH_MIPS64R6)
ld $in0,0($inp)
ld $in1,8($inp)
#else
ldl $in0,0+MSB($inp)
ldl $in1,8+MSB($inp)
ldr $in0,0+LSB($inp)
ldr $in1,8+LSB($inp)
#endif
#ifdef MIPSEB
# if defined(_MIPS_ARCH_MIPS64R2)
dsbh $in0,$in0 # byte swap
dsbh $in1,$in1
dshd $in0,$in0
dshd $in1,$in1
# else
ori $tmp0,$zero,0xFF
dsll $tmp2,$tmp0,32
or $tmp0,$tmp2 # 0x000000FF000000FF
and $tmp1,$in0,$tmp0 # byte swap
and $tmp3,$in1,$tmp0
dsrl $tmp2,$in0,24
dsrl $tmp4,$in1,24
dsll $tmp1,24
dsll $tmp3,24
and $tmp2,$tmp0
and $tmp4,$tmp0
dsll $tmp0,8 # 0x0000FF000000FF00
or $tmp1,$tmp2
or $tmp3,$tmp4
and $tmp2,$in0,$tmp0
and $tmp4,$in1,$tmp0
dsrl $in0,8
dsrl $in1,8
dsll $tmp2,8
dsll $tmp4,8
and $in0,$tmp0
and $in1,$tmp0
or $tmp1,$tmp2
or $tmp3,$tmp4
or $in0,$tmp1
or $in1,$tmp3
dsrl $tmp1,$in0,32
dsrl $tmp3,$in1,32
dsll $in0,32
dsll $in1,32
or $in0,$tmp1
or $in1,$tmp3
# endif
#endif
li $tmp0,1
dsll $tmp0,32
daddiu $tmp0,-63
dsll $tmp0,28
daddiu $tmp0,-1 # 0ffffffc0fffffff
and $in0,$tmp0
daddiu $tmp0,-3 # 0ffffffc0ffffffc
and $in1,$tmp0
sd $in0,24($ctx)
dsrl $tmp0,$in1,2
sd $in1,32($ctx)
daddu $tmp0,$in1 # s1 = r1 + (r1 >> 2)
sd $tmp0,40($ctx)
.Lno_key:
li $v0,0 # return 0
jr $ra
.end poly1305_init
___
{
my ($h0,$h1,$h2,$r0,$r1,$s1,$d0,$d1,$d2) =
($s0,$s1,$s2,$s3,$s4,$s5,$in0,$in1,$t2);
$code.=<<___;
.align 5
.globl poly1305_blocks
.ent poly1305_blocks
poly1305_blocks:
.set noreorder
dsrl $len,4 # number of complete blocks
bnez $len,poly1305_blocks_internal
nop
jr $ra
nop
.end poly1305_blocks
.align 5
.ent poly1305_blocks_internal
poly1305_blocks_internal:
.frame $sp,6*8,$ra
.mask $SAVED_REGS_MASK,-8
.set noreorder
dsubu $sp,6*8
sd $s5,40($sp)
sd $s4,32($sp)
___
$code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue
sd $s3,24($sp)
sd $s2,16($sp)
sd $s1,8($sp)
sd $s0,0($sp)
___
$code.=<<___;
.set reorder
ld $h0,0($ctx) # load hash value
ld $h1,8($ctx)
ld $h2,16($ctx)
ld $r0,24($ctx) # load key
ld $r1,32($ctx)
ld $s1,40($ctx)
.Loop:
#if defined(_MIPS_ARCH_MIPS64R6)
ld $in0,0($inp) # load input
ld $in1,8($inp)
#else
ldl $in0,0+MSB($inp) # load input
ldl $in1,8+MSB($inp)
ldr $in0,0+LSB($inp)
ldr $in1,8+LSB($inp)
#endif
daddiu $len,-1
daddiu $inp,16
#ifdef MIPSEB
# if defined(_MIPS_ARCH_MIPS64R2)
dsbh $in0,$in0 # byte swap
dsbh $in1,$in1
dshd $in0,$in0
dshd $in1,$in1
# else
ori $tmp0,$zero,0xFF
dsll $tmp2,$tmp0,32
or $tmp0,$tmp2 # 0x000000FF000000FF
and $tmp1,$in0,$tmp0 # byte swap
and $tmp3,$in1,$tmp0
dsrl $tmp2,$in0,24
dsrl $tmp4,$in1,24
dsll $tmp1,24
dsll $tmp3,24
and $tmp2,$tmp0
and $tmp4,$tmp0
dsll $tmp0,8 # 0x0000FF000000FF00
or $tmp1,$tmp2
or $tmp3,$tmp4
and $tmp2,$in0,$tmp0
and $tmp4,$in1,$tmp0
dsrl $in0,8
dsrl $in1,8
dsll $tmp2,8
dsll $tmp4,8
and $in0,$tmp0
and $in1,$tmp0
or $tmp1,$tmp2
or $tmp3,$tmp4
or $in0,$tmp1
or $in1,$tmp3
dsrl $tmp1,$in0,32
dsrl $tmp3,$in1,32
dsll $in0,32
dsll $in1,32
or $in0,$tmp1
or $in1,$tmp3
# endif
#endif
daddu $h0,$in0 # accumulate input
daddu $h1,$in1
sltu $tmp0,$h0,$in0
sltu $tmp1,$h1,$in1
daddu $h1,$tmp0
dmultu ($r0,$h0) # h0*r0
daddu $h2,$padbit
sltu $tmp0,$h1,$tmp0
mflo ($d0,$r0,$h0)
mfhi ($d1,$r0,$h0)
dmultu ($s1,$h1) # h1*5*r1
daddu $tmp0,$tmp1
daddu $h2,$tmp0
mflo ($tmp0,$s1,$h1)
mfhi ($tmp1,$s1,$h1)
dmultu ($r1,$h0) # h0*r1
daddu $d0,$tmp0
daddu $d1,$tmp1
mflo ($tmp2,$r1,$h0)
mfhi ($d2,$r1,$h0)
sltu $tmp0,$d0,$tmp0
daddu $d1,$tmp0
dmultu ($r0,$h1) # h1*r0
daddu $d1,$tmp2
sltu $tmp2,$d1,$tmp2
mflo ($tmp0,$r0,$h1)
mfhi ($tmp1,$r0,$h1)
daddu $d2,$tmp2
dmultu ($s1,$h2) # h2*5*r1
daddu $d1,$tmp0
daddu $d2,$tmp1
mflo ($tmp2,$s1,$h2)
dmultu ($r0,$h2) # h2*r0
sltu $tmp0,$d1,$tmp0
daddu $d2,$tmp0
mflo ($tmp3,$r0,$h2)
daddu $d1,$tmp2
daddu $d2,$tmp3
sltu $tmp2,$d1,$tmp2
daddu $d2,$tmp2
li $tmp0,-4 # final reduction
and $tmp0,$d2
dsrl $tmp1,$d2,2
andi $h2,$d2,3
daddu $tmp0,$tmp1
daddu $h0,$d0,$tmp0
sltu $tmp0,$h0,$tmp0
daddu $h1,$d1,$tmp0
sltu $tmp0,$h1,$tmp0
daddu $h2,$h2,$tmp0
bnez $len,.Loop
sd $h0,0($ctx) # store hash value
sd $h1,8($ctx)
sd $h2,16($ctx)
.set noreorder
ld $s5,40($sp) # epilogue
ld $s4,32($sp)
___
$code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi epilogue
ld $s3,24($sp)
ld $s2,16($sp)
ld $s1,8($sp)
ld $s0,0($sp)
___
$code.=<<___;
jr $ra
daddu $sp,6*8
.end poly1305_blocks_internal
___
}
{
my ($ctx,$mac,$nonce) = ($a0,$a1,$a2);
$code.=<<___;
.align 5
.globl poly1305_emit
.ent poly1305_emit
poly1305_emit:
.frame $sp,0,$ra
.set reorder
ld $tmp0,0($ctx)
ld $tmp1,8($ctx)
ld $tmp2,16($ctx)
daddiu $in0,$tmp0,5 # compare to modulus
sltiu $tmp3,$in0,5
daddu $in1,$tmp1,$tmp3
sltu $tmp3,$in1,$tmp3
daddu $tmp2,$tmp2,$tmp3
dsrl $tmp2,2 # see if it carried/borrowed
dsubu $tmp2,$zero,$tmp2
nor $tmp3,$zero,$tmp2
and $in0,$tmp2
and $tmp0,$tmp3
and $in1,$tmp2
and $tmp1,$tmp3
or $in0,$tmp0
or $in1,$tmp1
lwu $tmp0,0($nonce) # load nonce
lwu $tmp1,4($nonce)
lwu $tmp2,8($nonce)
lwu $tmp3,12($nonce)
dsll $tmp1,32
dsll $tmp3,32
or $tmp0,$tmp1
or $tmp2,$tmp3
daddu $in0,$tmp0 # accumulate nonce
daddu $in1,$tmp2
sltu $tmp0,$in0,$tmp0
daddu $in1,$tmp0
dsrl $tmp0,$in0,8 # write mac value
dsrl $tmp1,$in0,16
dsrl $tmp2,$in0,24
sb $in0,0($mac)
dsrl $tmp3,$in0,32
sb $tmp0,1($mac)
dsrl $tmp0,$in0,40
sb $tmp1,2($mac)
dsrl $tmp1,$in0,48
sb $tmp2,3($mac)
dsrl $tmp2,$in0,56
sb $tmp3,4($mac)
dsrl $tmp3,$in1,8
sb $tmp0,5($mac)
dsrl $tmp0,$in1,16
sb $tmp1,6($mac)
dsrl $tmp1,$in1,24
sb $tmp2,7($mac)
sb $in1,8($mac)
dsrl $tmp2,$in1,32
sb $tmp3,9($mac)
dsrl $tmp3,$in1,40
sb $tmp0,10($mac)
dsrl $tmp0,$in1,48
sb $tmp1,11($mac)
dsrl $tmp1,$in1,56
sb $tmp2,12($mac)
sb $tmp3,13($mac)
sb $tmp0,14($mac)
sb $tmp1,15($mac)
jr $ra
.end poly1305_emit
.rdata
.asciiz "Poly1305 for MIPS64, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
___
}
$output and open STDOUT,">$output";
print $code;
close STDOUT;