ftu/blst/asm/add_mod_384x384-x86_64.pl

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Perl
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2022-09-09 06:47:49 +00:00
#!/usr/bin/env perl
#
# Copyright Supranational LLC
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
$flavour = shift;
$output = shift;
if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
die "can't locate x86_64-xlate.pl";
open STDOUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
or die "can't call $xlate: $!";
# common argument layout
($r_ptr,$a_ptr,$b_org,$n_ptr,$n0) = ("%rdi","%rsi","%rdx","%rcx","%r8");
$b_ptr = "%rbx";
# common accumulator layout
@acc=map("%r$_",(8..15));
############################################################ 384x384 add/sub
# Double-width addition/subtraction modulo n<<384, as opposite to
# naively expected modulo n*n. It works because n<<384 is the actual
# input boundary condition for Montgomery reduction, not n*n.
# Just in case, this is duplicated, but only one module is
# supposed to be linked...
{
my @acc=(@acc,"%rax","%rbx","%rbp",$a_ptr); # all registers are affected
# except for $n_ptr and $r_ptr
$code.=<<___;
.text
.type __add_mod_384x384,\@abi-omnipotent
.align 32
__add_mod_384x384:
mov 8*0($a_ptr), @acc[0]
mov 8*1($a_ptr), @acc[1]
mov 8*2($a_ptr), @acc[2]
mov 8*3($a_ptr), @acc[3]
mov 8*4($a_ptr), @acc[4]
mov 8*5($a_ptr), @acc[5]
mov 8*6($a_ptr), @acc[6]
add 8*0($b_org), @acc[0]
mov 8*7($a_ptr), @acc[7]
adc 8*1($b_org), @acc[1]
mov 8*8($a_ptr), @acc[8]
adc 8*2($b_org), @acc[2]
mov 8*9($a_ptr), @acc[9]
adc 8*3($b_org), @acc[3]
mov 8*10($a_ptr), @acc[10]
adc 8*4($b_org), @acc[4]
mov 8*11($a_ptr), @acc[11]
adc 8*5($b_org), @acc[5]
mov @acc[0], 8*0($r_ptr)
adc 8*6($b_org), @acc[6]
mov @acc[1], 8*1($r_ptr)
adc 8*7($b_org), @acc[7]
mov @acc[2], 8*2($r_ptr)
adc 8*8($b_org), @acc[8]
mov @acc[4], 8*4($r_ptr)
mov @acc[6], @acc[0]
adc 8*9($b_org), @acc[9]
mov @acc[3], 8*3($r_ptr)
mov @acc[7], @acc[1]
adc 8*10($b_org), @acc[10]
mov @acc[5], 8*5($r_ptr)
mov @acc[8], @acc[2]
adc 8*11($b_org), @acc[11]
mov @acc[9], @acc[3]
sbb $b_org, $b_org
sub 8*0($n_ptr), @acc[6]
sbb 8*1($n_ptr), @acc[7]
mov @acc[10], @acc[4]
sbb 8*2($n_ptr), @acc[8]
sbb 8*3($n_ptr), @acc[9]
sbb 8*4($n_ptr), @acc[10]
mov @acc[11], @acc[5]
sbb 8*5($n_ptr), @acc[11]
sbb \$0, $b_org
cmovc @acc[0], @acc[6]
cmovc @acc[1], @acc[7]
cmovc @acc[2], @acc[8]
mov @acc[6], 8*6($r_ptr)
cmovc @acc[3], @acc[9]
mov @acc[7], 8*7($r_ptr)
cmovc @acc[4], @acc[10]
mov @acc[8], 8*8($r_ptr)
cmovc @acc[5], @acc[11]
mov @acc[9], 8*9($r_ptr)
mov @acc[10], 8*10($r_ptr)
mov @acc[11], 8*11($r_ptr)
ret
.size __add_mod_384x384,.-__add_mod_384x384
.type __sub_mod_384x384,\@abi-omnipotent
.align 32
__sub_mod_384x384:
mov 8*0($a_ptr), @acc[0]
mov 8*1($a_ptr), @acc[1]
mov 8*2($a_ptr), @acc[2]
mov 8*3($a_ptr), @acc[3]
mov 8*4($a_ptr), @acc[4]
mov 8*5($a_ptr), @acc[5]
mov 8*6($a_ptr), @acc[6]
sub 8*0($b_org), @acc[0]
mov 8*7($a_ptr), @acc[7]
sbb 8*1($b_org), @acc[1]
mov 8*8($a_ptr), @acc[8]
sbb 8*2($b_org), @acc[2]
mov 8*9($a_ptr), @acc[9]
sbb 8*3($b_org), @acc[3]
mov 8*10($a_ptr), @acc[10]
sbb 8*4($b_org), @acc[4]
mov 8*11($a_ptr), @acc[11]
sbb 8*5($b_org), @acc[5]
mov @acc[0], 8*0($r_ptr)
sbb 8*6($b_org), @acc[6]
mov 8*0($n_ptr), @acc[0]
mov @acc[1], 8*1($r_ptr)
sbb 8*7($b_org), @acc[7]
mov 8*1($n_ptr), @acc[1]
mov @acc[2], 8*2($r_ptr)
sbb 8*8($b_org), @acc[8]
mov 8*2($n_ptr), @acc[2]
mov @acc[3], 8*3($r_ptr)
sbb 8*9($b_org), @acc[9]
mov 8*3($n_ptr), @acc[3]
mov @acc[4], 8*4($r_ptr)
sbb 8*10($b_org), @acc[10]
mov 8*4($n_ptr), @acc[4]
mov @acc[5], 8*5($r_ptr)
sbb 8*11($b_org), @acc[11]
mov 8*5($n_ptr), @acc[5]
sbb $b_org, $b_org
and $b_org, @acc[0]
and $b_org, @acc[1]
and $b_org, @acc[2]
and $b_org, @acc[3]
and $b_org, @acc[4]
and $b_org, @acc[5]
add @acc[0], @acc[6]
adc @acc[1], @acc[7]
mov @acc[6], 8*6($r_ptr)
adc @acc[2], @acc[8]
mov @acc[7], 8*7($r_ptr)
adc @acc[3], @acc[9]
mov @acc[8], 8*8($r_ptr)
adc @acc[4], @acc[10]
mov @acc[9], 8*9($r_ptr)
adc @acc[5], @acc[11]
mov @acc[10], 8*10($r_ptr)
mov @acc[11], 8*11($r_ptr)
ret
.size __sub_mod_384x384,.-__sub_mod_384x384
.globl add_mod_384x384
.hidden add_mod_384x384
.type add_mod_384x384,\@function,4,"unwind"
.align 32
add_mod_384x384:
.cfi_startproc
push %rbp
.cfi_push %rbp
push %rbx
.cfi_push %rbx
push %r12
.cfi_push %r12
push %r13
.cfi_push %r13
push %r14
.cfi_push %r14
push %r15
.cfi_push %r15
sub \$8, %rsp
.cfi_adjust_cfa_offset 8
.cfi_end_prologue
call __add_mod_384x384
mov 8(%rsp),%r15
.cfi_restore %r15
mov 16(%rsp),%r14
.cfi_restore %r14
mov 24(%rsp),%r13
.cfi_restore %r13
mov 32(%rsp),%r12
.cfi_restore %r12
mov 40(%rsp),%rbx
.cfi_restore %rbx
mov 48(%rsp),%rbp
.cfi_restore %rbp
lea 56(%rsp),%rsp
.cfi_adjust_cfa_offset -56
.cfi_epilogue
ret
.cfi_endproc
.size add_mod_384x384,.-add_mod_384x384
.globl sub_mod_384x384
.hidden sub_mod_384x384
.type sub_mod_384x384,\@function,4,"unwind"
.align 32
sub_mod_384x384:
.cfi_startproc
push %rbp
.cfi_push %rbp
push %rbx
.cfi_push %rbx
push %r12
.cfi_push %r12
push %r13
.cfi_push %r13
push %r14
.cfi_push %r14
push %r15
.cfi_push %r15
sub \$8, %rsp
.cfi_adjust_cfa_offset 8
.cfi_end_prologue
call __sub_mod_384x384
mov 8(%rsp),%r15
.cfi_restore %r15
mov 16(%rsp),%r14
.cfi_restore %r14
mov 24(%rsp),%r13
.cfi_restore %r13
mov 32(%rsp),%r12
.cfi_restore %r12
mov 40(%rsp),%rbx
.cfi_restore %rbx
mov 48(%rsp),%rbp
.cfi_restore %rbp
lea 56(%rsp),%rsp
.cfi_adjust_cfa_offset -56
.cfi_epilogue
ret
.cfi_endproc
.size sub_mod_384x384,.-sub_mod_384x384
___
}
print $code;
close STDOUT;