graviola 0.3.4

graviola is a modern, fast cryptography library
Documentation 
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// generated source. do not edit.
#![allow(non_upper_case_globals, unused_macros, unused_imports)]
use crate::low::macros::*;

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0 OR ISC OR MIT-0

// ----------------------------------------------------------------------------
// Point doubling on NIST curve P-384 in Montgomery-Jacobian coordinates
//
//    extern void p384_montjdouble_alt(uint64_t p3[static 18],
//                                     const uint64_t p1[static 18]);
//
// Does p3 := 2 * p1 where all points are regarded as Jacobian triples with
// each coordinate in the Montgomery domain, i.e. x' = (2^384 * x) mod p_384.
// A Jacobian triple (x',y',z') represents affine point (x/z^2,y/z^3).
//
// Standard ARM ABI: X0 = p3, X1 = p1
// ----------------------------------------------------------------------------

// Size of individual field elements

macro_rules! NUMSIZE {
    () => {
        "48"
    };
}

// Stable homes for input arguments during main code sequence

macro_rules! input_z {
    () => {
        "x23"
    };
}
macro_rules! input_x {
    () => {
        "x24"
    };
}

// Pointer-offset pairs for inputs and outputs

macro_rules! x_1 { () => { Q!(input_x!() ", #0") } }
macro_rules! y_1 { () => { Q!(input_x!() ", # " NUMSIZE!()) } }
macro_rules! z_1 { () => { Q!(input_x!() ", # (2 * " NUMSIZE!() ")") } }

macro_rules! x_3 { () => { Q!(input_z!() ", #0") } }
macro_rules! y_3 { () => { Q!(input_z!() ", # " NUMSIZE!()) } }
macro_rules! z_3 { () => { Q!(input_z!() ", # (2 * " NUMSIZE!() ")") } }

// Pointer-offset pairs for temporaries, with some aliasing
// NSPACE is the total stack needed for these temporaries

macro_rules! z2 { () => { Q!("sp, # (" NUMSIZE!() "* 0)") } }
macro_rules! y2 { () => { Q!("sp, # (" NUMSIZE!() "* 1)") } }
macro_rules! x2p { () => { Q!("sp, # (" NUMSIZE!() "* 2)") } }
macro_rules! xy2 { () => { Q!("sp, # (" NUMSIZE!() "* 3)") } }

macro_rules! y4 { () => { Q!("sp, # (" NUMSIZE!() "* 4)") } }
macro_rules! t2 { () => { Q!("sp, # (" NUMSIZE!() "* 4)") } }

macro_rules! dx2 { () => { Q!("sp, # (" NUMSIZE!() "* 5)") } }
macro_rules! t1 { () => { Q!("sp, # (" NUMSIZE!() "* 5)") } }

macro_rules! d { () => { Q!("sp, # (" NUMSIZE!() "* 6)") } }
macro_rules! x4p { () => { Q!("sp, # (" NUMSIZE!() "* 6)") } }

macro_rules! NSPACE { () => { Q!("(" NUMSIZE!() "* 7)") } }

// Corresponds exactly to bignum_montmul_p384_alt

macro_rules! montmul_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x3, x4, [" $P1 "];\n"
        "ldp x5, x6, [" $P2 "];\n"
        "mul x12, x3, x5;\n"
        "umulh x13, x3, x5;\n"
        "mul x11, x3, x6;\n"
        "umulh x14, x3, x6;\n"
        "adds x13, x13, x11;\n"
        "ldp x7, x8, [" $P2 "+ 16];\n"
        "mul x11, x3, x7;\n"
        "umulh x15, x3, x7;\n"
        "adcs x14, x14, x11;\n"
        "mul x11, x3, x8;\n"
        "umulh x16, x3, x8;\n"
        "adcs x15, x15, x11;\n"
        "ldp x9, x10, [" $P2 "+ 32];\n"
        "mul x11, x3, x9;\n"
        "umulh x17, x3, x9;\n"
        "adcs x16, x16, x11;\n"
        "mul x11, x3, x10;\n"
        "umulh x19, x3, x10;\n"
        "adcs x17, x17, x11;\n"
        "adc x19, x19, xzr;\n"
        "mul x11, x4, x5;\n"
        "adds x13, x13, x11;\n"
        "mul x11, x4, x6;\n"
        "adcs x14, x14, x11;\n"
        "mul x11, x4, x7;\n"
        "adcs x15, x15, x11;\n"
        "mul x11, x4, x8;\n"
        "adcs x16, x16, x11;\n"
        "mul x11, x4, x9;\n"
        "adcs x17, x17, x11;\n"
        "mul x11, x4, x10;\n"
        "adcs x19, x19, x11;\n"
        "cset x20, cs;\n"
        "umulh x11, x4, x5;\n"
        "adds x14, x14, x11;\n"
        "umulh x11, x4, x6;\n"
        "adcs x15, x15, x11;\n"
        "umulh x11, x4, x7;\n"
        "adcs x16, x16, x11;\n"
        "umulh x11, x4, x8;\n"
        "adcs x17, x17, x11;\n"
        "umulh x11, x4, x9;\n"
        "adcs x19, x19, x11;\n"
        "umulh x11, x4, x10;\n"
        "adc x20, x20, x11;\n"
        "ldp x3, x4, [" $P1 "+ 16];\n"
        "mul x11, x3, x5;\n"
        "adds x14, x14, x11;\n"
        "mul x11, x3, x6;\n"
        "adcs x15, x15, x11;\n"
        "mul x11, x3, x7;\n"
        "adcs x16, x16, x11;\n"
        "mul x11, x3, x8;\n"
        "adcs x17, x17, x11;\n"
        "mul x11, x3, x9;\n"
        "adcs x19, x19, x11;\n"
        "mul x11, x3, x10;\n"
        "adcs x20, x20, x11;\n"
        "cset x21, cs;\n"
        "umulh x11, x3, x5;\n"
        "adds x15, x15, x11;\n"
        "umulh x11, x3, x6;\n"
        "adcs x16, x16, x11;\n"
        "umulh x11, x3, x7;\n"
        "adcs x17, x17, x11;\n"
        "umulh x11, x3, x8;\n"
        "adcs x19, x19, x11;\n"
        "umulh x11, x3, x9;\n"
        "adcs x20, x20, x11;\n"
        "umulh x11, x3, x10;\n"
        "adc x21, x21, x11;\n"
        "mul x11, x4, x5;\n"
        "adds x15, x15, x11;\n"
        "mul x11, x4, x6;\n"
        "adcs x16, x16, x11;\n"
        "mul x11, x4, x7;\n"
        "adcs x17, x17, x11;\n"
        "mul x11, x4, x8;\n"
        "adcs x19, x19, x11;\n"
        "mul x11, x4, x9;\n"
        "adcs x20, x20, x11;\n"
        "mul x11, x4, x10;\n"
        "adcs x21, x21, x11;\n"
        "cset x22, cs;\n"
        "umulh x11, x4, x5;\n"
        "adds x16, x16, x11;\n"
        "umulh x11, x4, x6;\n"
        "adcs x17, x17, x11;\n"
        "umulh x11, x4, x7;\n"
        "adcs x19, x19, x11;\n"
        "umulh x11, x4, x8;\n"
        "adcs x20, x20, x11;\n"
        "umulh x11, x4, x9;\n"
        "adcs x21, x21, x11;\n"
        "umulh x11, x4, x10;\n"
        "adc x22, x22, x11;\n"
        "ldp x3, x4, [" $P1 "+ 32];\n"
        "mul x11, x3, x5;\n"
        "adds x16, x16, x11;\n"
        "mul x11, x3, x6;\n"
        "adcs x17, x17, x11;\n"
        "mul x11, x3, x7;\n"
        "adcs x19, x19, x11;\n"
        "mul x11, x3, x8;\n"
        "adcs x20, x20, x11;\n"
        "mul x11, x3, x9;\n"
        "adcs x21, x21, x11;\n"
        "mul x11, x3, x10;\n"
        "adcs x22, x22, x11;\n"
        "cset x2, cs;\n"
        "umulh x11, x3, x5;\n"
        "adds x17, x17, x11;\n"
        "umulh x11, x3, x6;\n"
        "adcs x19, x19, x11;\n"
        "umulh x11, x3, x7;\n"
        "adcs x20, x20, x11;\n"
        "umulh x11, x3, x8;\n"
        "adcs x21, x21, x11;\n"
        "umulh x11, x3, x9;\n"
        "adcs x22, x22, x11;\n"
        "umulh x11, x3, x10;\n"
        "adc x2, x2, x11;\n"
        "mul x11, x4, x5;\n"
        "adds x17, x17, x11;\n"
        "mul x11, x4, x6;\n"
        "adcs x19, x19, x11;\n"
        "mul x11, x4, x7;\n"
        "adcs x20, x20, x11;\n"
        "mul x11, x4, x8;\n"
        "adcs x21, x21, x11;\n"
        "mul x11, x4, x9;\n"
        "adcs x22, x22, x11;\n"
        "mul x11, x4, x10;\n"
        "adcs x2, x2, x11;\n"
        "cset x1, cs;\n"
        "umulh x11, x4, x5;\n"
        "adds x19, x19, x11;\n"
        "umulh x11, x4, x6;\n"
        "adcs x20, x20, x11;\n"
        "umulh x11, x4, x7;\n"
        "adcs x21, x21, x11;\n"
        "umulh x11, x4, x8;\n"
        "adcs x22, x22, x11;\n"
        "umulh x11, x4, x9;\n"
        "adcs x2, x2, x11;\n"
        "umulh x11, x4, x10;\n"
        "adc x1, x1, x11;\n"
        "lsl x7, x12, #32;\n"
        "add x12, x7, x12;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x12;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x12;\n"
        "umulh x6, x6, x12;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x12;\n"
        "adc x5, xzr, xzr;\n"
        "subs x13, x13, x7;\n"
        "sbcs x14, x14, x6;\n"
        "sbcs x15, x15, x5;\n"
        "sbcs x16, x16, xzr;\n"
        "sbcs x17, x17, xzr;\n"
        "sbc x12, x12, xzr;\n"
        "lsl x7, x13, #32;\n"
        "add x13, x7, x13;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x13;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x13;\n"
        "umulh x6, x6, x13;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x13;\n"
        "adc x5, xzr, xzr;\n"
        "subs x14, x14, x7;\n"
        "sbcs x15, x15, x6;\n"
        "sbcs x16, x16, x5;\n"
        "sbcs x17, x17, xzr;\n"
        "sbcs x12, x12, xzr;\n"
        "sbc x13, x13, xzr;\n"
        "lsl x7, x14, #32;\n"
        "add x14, x7, x14;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x14;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x14;\n"
        "umulh x6, x6, x14;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x14;\n"
        "adc x5, xzr, xzr;\n"
        "subs x15, x15, x7;\n"
        "sbcs x16, x16, x6;\n"
        "sbcs x17, x17, x5;\n"
        "sbcs x12, x12, xzr;\n"
        "sbcs x13, x13, xzr;\n"
        "sbc x14, x14, xzr;\n"
        "lsl x7, x15, #32;\n"
        "add x15, x7, x15;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x15;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x15;\n"
        "umulh x6, x6, x15;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x15;\n"
        "adc x5, xzr, xzr;\n"
        "subs x16, x16, x7;\n"
        "sbcs x17, x17, x6;\n"
        "sbcs x12, x12, x5;\n"
        "sbcs x13, x13, xzr;\n"
        "sbcs x14, x14, xzr;\n"
        "sbc x15, x15, xzr;\n"
        "lsl x7, x16, #32;\n"
        "add x16, x7, x16;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x16;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x16;\n"
        "umulh x6, x6, x16;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x16;\n"
        "adc x5, xzr, xzr;\n"
        "subs x17, x17, x7;\n"
        "sbcs x12, x12, x6;\n"
        "sbcs x13, x13, x5;\n"
        "sbcs x14, x14, xzr;\n"
        "sbcs x15, x15, xzr;\n"
        "sbc x16, x16, xzr;\n"
        "lsl x7, x17, #32;\n"
        "add x17, x7, x17;\n"
        "mov x7, #0xffffffff00000001;\n"
        "umulh x7, x7, x17;\n"
        "mov x6, #0xffffffff;\n"
        "mul x5, x6, x17;\n"
        "umulh x6, x6, x17;\n"
        "adds x7, x7, x5;\n"
        "adcs x6, x6, x17;\n"
        "adc x5, xzr, xzr;\n"
        "subs x12, x12, x7;\n"
        "sbcs x13, x13, x6;\n"
        "sbcs x14, x14, x5;\n"
        "sbcs x15, x15, xzr;\n"
        "sbcs x16, x16, xzr;\n"
        "sbc x17, x17, xzr;\n"
        "adds x12, x12, x19;\n"
        "adcs x13, x13, x20;\n"
        "adcs x14, x14, x21;\n"
        "adcs x15, x15, x22;\n"
        "adcs x16, x16, x2;\n"
        "adcs x17, x17, x1;\n"
        "adc x10, xzr, xzr;\n"
        "mov x11, #0xffffffff00000001;\n"
        "adds x19, x12, x11;\n"
        "mov x11, #0xffffffff;\n"
        "adcs x20, x13, x11;\n"
        "mov x11, #0x1;\n"
        "adcs x21, x14, x11;\n"
        "adcs x22, x15, xzr;\n"
        "adcs x2, x16, xzr;\n"
        "adcs x1, x17, xzr;\n"
        "adcs x10, x10, xzr;\n"
        "csel x12, x12, x19, eq;\n"
        "csel x13, x13, x20, eq;\n"
        "csel x14, x14, x21, eq;\n"
        "csel x15, x15, x22, eq;\n"
        "csel x16, x16, x2, eq;\n"
        "csel x17, x17, x1, eq;\n"
        "stp x12, x13, [" $P0 "];\n"
        "stp x14, x15, [" $P0 "+ 16];\n"
        "stp x16, x17, [" $P0 "+ 32]"
    )}
}

// Corresponds exactly to bignum_montsqr_p384_alt

macro_rules! montsqr_p384 {
    ($P0:expr, $P1:expr) => { Q!(
        "ldp x2, x3, [" $P1 "];\n"
        "mul x9, x2, x3;\n"
        "umulh x10, x2, x3;\n"
        "ldp x4, x5, [" $P1 "+ 16];\n"
        "mul x8, x2, x4;\n"
        "adds x10, x10, x8;\n"
        "mul x11, x2, x5;\n"
        "mul x8, x3, x4;\n"
        "adcs x11, x11, x8;\n"
        "umulh x12, x2, x5;\n"
        "mul x8, x3, x5;\n"
        "adcs x12, x12, x8;\n"
        "ldp x6, x7, [" $P1 "+ 32];\n"
        "mul x13, x2, x7;\n"
        "mul x8, x3, x6;\n"
        "adcs x13, x13, x8;\n"
        "umulh x14, x2, x7;\n"
        "mul x8, x3, x7;\n"
        "adcs x14, x14, x8;\n"
        "mul x15, x5, x6;\n"
        "adcs x15, x15, xzr;\n"
        "umulh x16, x5, x6;\n"
        "adc x16, x16, xzr;\n"
        "umulh x8, x2, x4;\n"
        "adds x11, x11, x8;\n"
        "umulh x8, x3, x4;\n"
        "adcs x12, x12, x8;\n"
        "umulh x8, x3, x5;\n"
        "adcs x13, x13, x8;\n"
        "umulh x8, x3, x6;\n"
        "adcs x14, x14, x8;\n"
        "umulh x8, x3, x7;\n"
        "adcs x15, x15, x8;\n"
        "adc x16, x16, xzr;\n"
        "mul x8, x2, x6;\n"
        "adds x12, x12, x8;\n"
        "mul x8, x4, x5;\n"
        "adcs x13, x13, x8;\n"
        "mul x8, x4, x6;\n"
        "adcs x14, x14, x8;\n"
        "mul x8, x4, x7;\n"
        "adcs x15, x15, x8;\n"
        "mul x8, x5, x7;\n"
        "adcs x16, x16, x8;\n"
        "mul x17, x6, x7;\n"
        "adcs x17, x17, xzr;\n"
        "umulh x19, x6, x7;\n"
        "adc x19, x19, xzr;\n"
        "umulh x8, x2, x6;\n"
        "adds x13, x13, x8;\n"
        "umulh x8, x4, x5;\n"
        "adcs x14, x14, x8;\n"
        "umulh x8, x4, x6;\n"
        "adcs x15, x15, x8;\n"
        "umulh x8, x4, x7;\n"
        "adcs x16, x16, x8;\n"
        "umulh x8, x5, x7;\n"
        "adcs x17, x17, x8;\n"
        "adc x19, x19, xzr;\n"
        "adds x9, x9, x9;\n"
        "adcs x10, x10, x10;\n"
        "adcs x11, x11, x11;\n"
        "adcs x12, x12, x12;\n"
        "adcs x13, x13, x13;\n"
        "adcs x14, x14, x14;\n"
        "adcs x15, x15, x15;\n"
        "adcs x16, x16, x16;\n"
        "adcs x17, x17, x17;\n"
        "adcs x19, x19, x19;\n"
        "cset x20, hs;\n"
        "umulh x8, x2, x2;\n"
        "mul x2, x2, x2;\n"
        "adds x9, x9, x8;\n"
        "mul x8, x3, x3;\n"
        "adcs x10, x10, x8;\n"
        "umulh x8, x3, x3;\n"
        "adcs x11, x11, x8;\n"
        "mul x8, x4, x4;\n"
        "adcs x12, x12, x8;\n"
        "umulh x8, x4, x4;\n"
        "adcs x13, x13, x8;\n"
        "mul x8, x5, x5;\n"
        "adcs x14, x14, x8;\n"
        "umulh x8, x5, x5;\n"
        "adcs x15, x15, x8;\n"
        "mul x8, x6, x6;\n"
        "adcs x16, x16, x8;\n"
        "umulh x8, x6, x6;\n"
        "adcs x17, x17, x8;\n"
        "mul x8, x7, x7;\n"
        "adcs x19, x19, x8;\n"
        "umulh x8, x7, x7;\n"
        "adc x20, x20, x8;\n"
        "lsl x5, x2, #32;\n"
        "add x2, x5, x2;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x2;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x2;\n"
        "umulh x4, x4, x2;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x2;\n"
        "adc x3, xzr, xzr;\n"
        "subs x9, x9, x5;\n"
        "sbcs x10, x10, x4;\n"
        "sbcs x11, x11, x3;\n"
        "sbcs x12, x12, xzr;\n"
        "sbcs x13, x13, xzr;\n"
        "sbc x2, x2, xzr;\n"
        "lsl x5, x9, #32;\n"
        "add x9, x5, x9;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x9;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x9;\n"
        "umulh x4, x4, x9;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x9;\n"
        "adc x3, xzr, xzr;\n"
        "subs x10, x10, x5;\n"
        "sbcs x11, x11, x4;\n"
        "sbcs x12, x12, x3;\n"
        "sbcs x13, x13, xzr;\n"
        "sbcs x2, x2, xzr;\n"
        "sbc x9, x9, xzr;\n"
        "lsl x5, x10, #32;\n"
        "add x10, x5, x10;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x10;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x10;\n"
        "umulh x4, x4, x10;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x10;\n"
        "adc x3, xzr, xzr;\n"
        "subs x11, x11, x5;\n"
        "sbcs x12, x12, x4;\n"
        "sbcs x13, x13, x3;\n"
        "sbcs x2, x2, xzr;\n"
        "sbcs x9, x9, xzr;\n"
        "sbc x10, x10, xzr;\n"
        "lsl x5, x11, #32;\n"
        "add x11, x5, x11;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x11;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x11;\n"
        "umulh x4, x4, x11;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x11;\n"
        "adc x3, xzr, xzr;\n"
        "subs x12, x12, x5;\n"
        "sbcs x13, x13, x4;\n"
        "sbcs x2, x2, x3;\n"
        "sbcs x9, x9, xzr;\n"
        "sbcs x10, x10, xzr;\n"
        "sbc x11, x11, xzr;\n"
        "lsl x5, x12, #32;\n"
        "add x12, x5, x12;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x12;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x12;\n"
        "umulh x4, x4, x12;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x12;\n"
        "adc x3, xzr, xzr;\n"
        "subs x13, x13, x5;\n"
        "sbcs x2, x2, x4;\n"
        "sbcs x9, x9, x3;\n"
        "sbcs x10, x10, xzr;\n"
        "sbcs x11, x11, xzr;\n"
        "sbc x12, x12, xzr;\n"
        "lsl x5, x13, #32;\n"
        "add x13, x5, x13;\n"
        "mov x5, #-4294967295;\n"
        "umulh x5, x5, x13;\n"
        "mov x4, #4294967295;\n"
        "mul x3, x4, x13;\n"
        "umulh x4, x4, x13;\n"
        "adds x5, x5, x3;\n"
        "adcs x4, x4, x13;\n"
        "adc x3, xzr, xzr;\n"
        "subs x2, x2, x5;\n"
        "sbcs x9, x9, x4;\n"
        "sbcs x10, x10, x3;\n"
        "sbcs x11, x11, xzr;\n"
        "sbcs x12, x12, xzr;\n"
        "sbc x13, x13, xzr;\n"
        "adds x2, x2, x14;\n"
        "adcs x9, x9, x15;\n"
        "adcs x10, x10, x16;\n"
        "adcs x11, x11, x17;\n"
        "adcs x12, x12, x19;\n"
        "adcs x13, x13, x20;\n"
        "adc x6, xzr, xzr;\n"
        "mov x8, #-4294967295;\n"
        "adds x14, x2, x8;\n"
        "mov x8, #4294967295;\n"
        "adcs x15, x9, x8;\n"
        "mov x8, #1;\n"
        "adcs x16, x10, x8;\n"
        "adcs x17, x11, xzr;\n"
        "adcs x19, x12, xzr;\n"
        "adcs x20, x13, xzr;\n"
        "adcs x6, x6, xzr;\n"
        "csel x2, x2, x14, eq;\n"
        "csel x9, x9, x15, eq;\n"
        "csel x10, x10, x16, eq;\n"
        "csel x11, x11, x17, eq;\n"
        "csel x12, x12, x19, eq;\n"
        "csel x13, x13, x20, eq;\n"
        "stp x2, x9, [" $P0 "];\n"
        "stp x10, x11, [" $P0 "+ 16];\n"
        "stp x12, x13, [" $P0 "+ 32]"
    )}
}

// Corresponds exactly to bignum_sub_p384

macro_rules! sub_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x5, x6, [" $P1 "];\n"
        "ldp x4, x3, [" $P2 "];\n"
        "subs x5, x5, x4;\n"
        "sbcs x6, x6, x3;\n"
        "ldp x7, x8, [" $P1 "+ 16];\n"
        "ldp x4, x3, [" $P2 "+ 16];\n"
        "sbcs x7, x7, x4;\n"
        "sbcs x8, x8, x3;\n"
        "ldp x9, x10, [" $P1 "+ 32];\n"
        "ldp x4, x3, [" $P2 "+ 32];\n"
        "sbcs x9, x9, x4;\n"
        "sbcs x10, x10, x3;\n"
        "csetm x3, lo;\n"
        "mov x4, #4294967295;\n"
        "and x4, x4, x3;\n"
        "adds x5, x5, x4;\n"
        "eor x4, x4, x3;\n"
        "adcs x6, x6, x4;\n"
        "mov x4, #-2;\n"
        "and x4, x4, x3;\n"
        "adcs x7, x7, x4;\n"
        "adcs x8, x8, x3;\n"
        "adcs x9, x9, x3;\n"
        "adc x10, x10, x3;\n"
        "stp x5, x6, [" $P0 "];\n"
        "stp x7, x8, [" $P0 "+ 16];\n"
        "stp x9, x10, [" $P0 "+ 32]"
    )}
}

// Corresponds exactly to bignum_add_p384

macro_rules! add_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x5, x6, [" $P1 "];\n"
        "ldp x4, x3, [" $P2 "];\n"
        "adds x5, x5, x4;\n"
        "adcs x6, x6, x3;\n"
        "ldp x7, x8, [" $P1 "+ 16];\n"
        "ldp x4, x3, [" $P2 "+ 16];\n"
        "adcs x7, x7, x4;\n"
        "adcs x8, x8, x3;\n"
        "ldp x9, x10, [" $P1 "+ 32];\n"
        "ldp x4, x3, [" $P2 "+ 32];\n"
        "adcs x9, x9, x4;\n"
        "adcs x10, x10, x3;\n"
        "adc x3, xzr, xzr;\n"
        "mov x4, #0xffffffff;\n"
        "cmp x5, x4;\n"
        "mov x4, #0xffffffff00000000;\n"
        "sbcs xzr, x6, x4;\n"
        "mov x4, #0xfffffffffffffffe;\n"
        "sbcs xzr, x7, x4;\n"
        "adcs xzr, x8, xzr;\n"
        "adcs xzr, x9, xzr;\n"
        "adcs xzr, x10, xzr;\n"
        "adcs x3, x3, xzr;\n"
        "csetm x3, ne;\n"
        "mov x4, #0xffffffff;\n"
        "and x4, x4, x3;\n"
        "subs x5, x5, x4;\n"
        "eor x4, x4, x3;\n"
        "sbcs x6, x6, x4;\n"
        "mov x4, #0xfffffffffffffffe;\n"
        "and x4, x4, x3;\n"
        "sbcs x7, x7, x4;\n"
        "sbcs x8, x8, x3;\n"
        "sbcs x9, x9, x3;\n"
        "sbc x10, x10, x3;\n"
        "stp x5, x6, [" $P0 "];\n"
        "stp x7, x8, [" $P0 "+ 16];\n"
        "stp x9, x10, [" $P0 "+ 32]"
    )}
}

// P0 = 4 * P1 - P2

macro_rules! cmsub41_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x1, x2, [" $P1 "];\n"
        "ldp x3, x4, [" $P1 "+ 16];\n"
        "ldp x5, x6, [" $P1 "+ 32];\n"
        "lsl x0, x1, #2;\n"
        "ldp x7, x8, [" $P2 "];\n"
        "subs x0, x0, x7;\n"
        "extr x1, x2, x1, #62;\n"
        "sbcs x1, x1, x8;\n"
        "ldp x7, x8, [" $P2 "+ 16];\n"
        "extr x2, x3, x2, #62;\n"
        "sbcs x2, x2, x7;\n"
        "extr x3, x4, x3, #62;\n"
        "sbcs x3, x3, x8;\n"
        "extr x4, x5, x4, #62;\n"
        "ldp x7, x8, [" $P2 "+ 32];\n"
        "sbcs x4, x4, x7;\n"
        "extr x5, x6, x5, #62;\n"
        "sbcs x5, x5, x8;\n"
        "lsr x6, x6, #62;\n"
        "adc x6, x6, xzr;\n"
        "lsl x7, x6, #32;\n"
        "subs x8, x6, x7;\n"
        "sbc x7, x7, xzr;\n"
        "adds x0, x0, x8;\n"
        "adcs x1, x1, x7;\n"
        "adcs x2, x2, x6;\n"
        "adcs x3, x3, xzr;\n"
        "adcs x4, x4, xzr;\n"
        "adcs x5, x5, xzr;\n"
        "csetm x8, cc;\n"
        "mov x9, #0xffffffff;\n"
        "and x9, x9, x8;\n"
        "adds x0, x0, x9;\n"
        "eor x9, x9, x8;\n"
        "adcs x1, x1, x9;\n"
        "mov x9, #0xfffffffffffffffe;\n"
        "and x9, x9, x8;\n"
        "adcs x2, x2, x9;\n"
        "adcs x3, x3, x8;\n"
        "adcs x4, x4, x8;\n"
        "adc x5, x5, x8;\n"
        "stp x0, x1, [" $P0 "];\n"
        "stp x2, x3, [" $P0 "+ 16];\n"
        "stp x4, x5, [" $P0 "+ 32]"
    )}
}

// P0 = C * P1 - D * P2

macro_rules! cmsub_p384 {
    ($P0:expr, $C:expr, $P1:expr, $D:expr, $P2:expr) => { Q!(
        "ldp x0, x1, [" $P2 "];\n"
        "mov x6, #0x00000000ffffffff;\n"
        "subs x6, x6, x0;\n"
        "mov x7, #0xffffffff00000000;\n"
        "sbcs x7, x7, x1;\n"
        "ldp x0, x1, [" $P2 "+ 16];\n"
        "mov x8, #0xfffffffffffffffe;\n"
        "sbcs x8, x8, x0;\n"
        "mov x13, #0xffffffffffffffff;\n"
        "sbcs x9, x13, x1;\n"
        "ldp x0, x1, [" $P2 "+ 32];\n"
        "sbcs x10, x13, x0;\n"
        "sbc x11, x13, x1;\n"
        "mov x12, " $D ";\n"
        "mul x0, x12, x6;\n"
        "mul x1, x12, x7;\n"
        "mul x2, x12, x8;\n"
        "mul x3, x12, x9;\n"
        "mul x4, x12, x10;\n"
        "mul x5, x12, x11;\n"
        "umulh x6, x12, x6;\n"
        "umulh x7, x12, x7;\n"
        "umulh x8, x12, x8;\n"
        "umulh x9, x12, x9;\n"
        "umulh x10, x12, x10;\n"
        "umulh x12, x12, x11;\n"
        "adds x1, x1, x6;\n"
        "adcs x2, x2, x7;\n"
        "adcs x3, x3, x8;\n"
        "adcs x4, x4, x9;\n"
        "adcs x5, x5, x10;\n"
        "mov x6, #1;\n"
        "adc x6, x12, x6;\n"
        "ldp x8, x9, [" $P1 "];\n"
        "ldp x10, x11, [" $P1 "+ 16];\n"
        "ldp x12, x13, [" $P1 "+ 32];\n"
        "mov x14, " $C ";\n"
        "mul x15, x14, x8;\n"
        "umulh x8, x14, x8;\n"
        "adds x0, x0, x15;\n"
        "mul x15, x14, x9;\n"
        "umulh x9, x14, x9;\n"
        "adcs x1, x1, x15;\n"
        "mul x15, x14, x10;\n"
        "umulh x10, x14, x10;\n"
        "adcs x2, x2, x15;\n"
        "mul x15, x14, x11;\n"
        "umulh x11, x14, x11;\n"
        "adcs x3, x3, x15;\n"
        "mul x15, x14, x12;\n"
        "umulh x12, x14, x12;\n"
        "adcs x4, x4, x15;\n"
        "mul x15, x14, x13;\n"
        "umulh x13, x14, x13;\n"
        "adcs x5, x5, x15;\n"
        "adc x6, x6, xzr;\n"
        "adds x1, x1, x8;\n"
        "adcs x2, x2, x9;\n"
        "adcs x3, x3, x10;\n"
        "adcs x4, x4, x11;\n"
        "adcs x5, x5, x12;\n"
        "adcs x6, x6, x13;\n"
        "lsl x7, x6, #32;\n"
        "subs x8, x6, x7;\n"
        "sbc x7, x7, xzr;\n"
        "adds x0, x0, x8;\n"
        "adcs x1, x1, x7;\n"
        "adcs x2, x2, x6;\n"
        "adcs x3, x3, xzr;\n"
        "adcs x4, x4, xzr;\n"
        "adcs x5, x5, xzr;\n"
        "csetm x6, cc;\n"
        "mov x7, #0xffffffff;\n"
        "and x7, x7, x6;\n"
        "adds x0, x0, x7;\n"
        "eor x7, x7, x6;\n"
        "adcs x1, x1, x7;\n"
        "mov x7, #0xfffffffffffffffe;\n"
        "and x7, x7, x6;\n"
        "adcs x2, x2, x7;\n"
        "adcs x3, x3, x6;\n"
        "adcs x4, x4, x6;\n"
        "adc x5, x5, x6;\n"
        "stp x0, x1, [" $P0 "];\n"
        "stp x2, x3, [" $P0 "+ 16];\n"
        "stp x4, x5, [" $P0 "+ 32]"
    )}
}

// A weak version of add that only guarantees sum in 6 digits

macro_rules! weakadd_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x5, x6, [" $P1 "];\n"
        "ldp x4, x3, [" $P2 "];\n"
        "adds x5, x5, x4;\n"
        "adcs x6, x6, x3;\n"
        "ldp x7, x8, [" $P1 "+ 16];\n"
        "ldp x4, x3, [" $P2 "+ 16];\n"
        "adcs x7, x7, x4;\n"
        "adcs x8, x8, x3;\n"
        "ldp x9, x10, [" $P1 "+ 32];\n"
        "ldp x4, x3, [" $P2 "+ 32];\n"
        "adcs x9, x9, x4;\n"
        "adcs x10, x10, x3;\n"
        "csetm x3, cs;\n"
        "mov x4, #0xffffffff;\n"
        "and x4, x4, x3;\n"
        "subs x5, x5, x4;\n"
        "eor x4, x4, x3;\n"
        "sbcs x6, x6, x4;\n"
        "mov x4, #0xfffffffffffffffe;\n"
        "and x4, x4, x3;\n"
        "sbcs x7, x7, x4;\n"
        "sbcs x8, x8, x3;\n"
        "sbcs x9, x9, x3;\n"
        "sbc x10, x10, x3;\n"
        "stp x5, x6, [" $P0 "];\n"
        "stp x7, x8, [" $P0 "+ 16];\n"
        "stp x9, x10, [" $P0 "+ 32]"
    )}
}

// P0 = 3 * P1 - 8 * P2

macro_rules! cmsub38_p384 {
    ($P0:expr, $P1:expr, $P2:expr) => { Q!(
        "ldp x0, x1, [" $P2 "];\n"
        "mov x6, #0x00000000ffffffff;\n"
        "subs x6, x6, x0;\n"
        "mov x7, #0xffffffff00000000;\n"
        "sbcs x7, x7, x1;\n"
        "ldp x0, x1, [" $P2 "+ 16];\n"
        "mov x8, #0xfffffffffffffffe;\n"
        "sbcs x8, x8, x0;\n"
        "mov x13, #0xffffffffffffffff;\n"
        "sbcs x9, x13, x1;\n"
        "ldp x0, x1, [" $P2 "+ 32];\n"
        "sbcs x10, x13, x0;\n"
        "sbc x11, x13, x1;\n"
        "lsl x0, x6, #3;\n"
        "extr x1, x7, x6, #61;\n"
        "extr x2, x8, x7, #61;\n"
        "extr x3, x9, x8, #61;\n"
        "extr x4, x10, x9, #61;\n"
        "extr x5, x11, x10, #61;\n"
        "lsr x6, x11, #61;\n"
        "add x6, x6, #1;\n"
        "ldp x8, x9, [" $P1 "];\n"
        "ldp x10, x11, [" $P1 "+ 16];\n"
        "ldp x12, x13, [" $P1 "+ 32];\n"
        "mov x14, 3;\n"
        "mul x15, x14, x8;\n"
        "umulh x8, x14, x8;\n"
        "adds x0, x0, x15;\n"
        "mul x15, x14, x9;\n"
        "umulh x9, x14, x9;\n"
        "adcs x1, x1, x15;\n"
        "mul x15, x14, x10;\n"
        "umulh x10, x14, x10;\n"
        "adcs x2, x2, x15;\n"
        "mul x15, x14, x11;\n"
        "umulh x11, x14, x11;\n"
        "adcs x3, x3, x15;\n"
        "mul x15, x14, x12;\n"
        "umulh x12, x14, x12;\n"
        "adcs x4, x4, x15;\n"
        "mul x15, x14, x13;\n"
        "umulh x13, x14, x13;\n"
        "adcs x5, x5, x15;\n"
        "adc x6, x6, xzr;\n"
        "adds x1, x1, x8;\n"
        "adcs x2, x2, x9;\n"
        "adcs x3, x3, x10;\n"
        "adcs x4, x4, x11;\n"
        "adcs x5, x5, x12;\n"
        "adcs x6, x6, x13;\n"
        "lsl x7, x6, #32;\n"
        "subs x8, x6, x7;\n"
        "sbc x7, x7, xzr;\n"
        "adds x0, x0, x8;\n"
        "adcs x1, x1, x7;\n"
        "adcs x2, x2, x6;\n"
        "adcs x3, x3, xzr;\n"
        "adcs x4, x4, xzr;\n"
        "adcs x5, x5, xzr;\n"
        "csetm x6, cc;\n"
        "mov x7, #0xffffffff;\n"
        "and x7, x7, x6;\n"
        "adds x0, x0, x7;\n"
        "eor x7, x7, x6;\n"
        "adcs x1, x1, x7;\n"
        "mov x7, #0xfffffffffffffffe;\n"
        "and x7, x7, x6;\n"
        "adcs x2, x2, x7;\n"
        "adcs x3, x3, x6;\n"
        "adcs x4, x4, x6;\n"
        "adc x5, x5, x6;\n"
        "stp x0, x1, [" $P0 "];\n"
        "stp x2, x3, [" $P0 "+ 16];\n"
        "stp x4, x5, [" $P0 "+ 32]"
    )}
}

/// Point doubling on NIST curve P-384 in Montgomery-Jacobian coordinates
///
///
/// Does p3 := 2 * p1 where all points are regarded as Jacobian triples with
/// each coordinate in the Montgomery domain, i.e. x' = (2^384 * x) mod p_384.
/// A Jacobian triple (x',y',z') represents affine point (x/z^2,y/z^3).
pub(crate) fn p384_montjdouble(p3: &mut [u64; 18], p1: &[u64; 18]) {
    // SAFETY: inline assembly. see [crate::low::inline_assembly_safety] for safety info.
    unsafe {
        core::arch::asm!(


        // Save regs and make room on stack for temporary variables

        Q!("    stp             " "x19, x20, [sp, #-16] !"),
        Q!("    stp             " "x21, x22, [sp, #-16] !"),
        Q!("    stp             " "x23, x24, [sp, #-16] !"),
        Q!("    sub             " "sp, sp, " NSPACE!()),

        // Move the input arguments to stable places

        Q!("    mov             " input_z!() ", x0"),
        Q!("    mov             " input_x!() ", x1"),

        // Main code, just a sequence of basic field operations

        // z2 = z^2
        // y2 = y^2

        montsqr_p384!(z2!(), z_1!()),
        montsqr_p384!(y2!(), y_1!()),

        // x2p = x^2 - z^4 = (x + z^2) * (x - z^2)

        weakadd_p384!(t1!(), x_1!(), z2!()),
        sub_p384!(t2!(), x_1!(), z2!()),
        montmul_p384!(x2p!(), t1!(), t2!()),

        // t1 = y + z
        // x4p = x2p^2
        // xy2 = x * y^2

        add_p384!(t1!(), y_1!(), z_1!()),
        montsqr_p384!(x4p!(), x2p!()),
        montmul_p384!(xy2!(), x_1!(), y2!()),

        // t2 = (y + z)^2

        montsqr_p384!(t2!(), t1!()),

        // d = 12 * xy2 - 9 * x4p
        // t1 = y^2 + 2 * y * z

        cmsub_p384!(d!(), "12", xy2!(), "9", x4p!()),
        sub_p384!(t1!(), t2!(), z2!()),

        // y4 = y^4

        montsqr_p384!(y4!(), y2!()),

        // z_3' = 2 * y * z
        // dx2 = d * x2p

        sub_p384!(z_3!(), t1!(), y2!()),
        montmul_p384!(dx2!(), d!(), x2p!()),

        // x' = 4 * xy2 - d

        cmsub41_p384!(x_3!(), xy2!(), d!()),

        // y' = 3 * dx2 - 8 * y4

        cmsub38_p384!(y_3!(), dx2!(), y4!()),

        // Restore stack and registers

        Q!("    add             " "sp, sp, " NSPACE!()),

        Q!("    ldp             " "x23, x24, [sp], 16"),
        Q!("    ldp             " "x21, x22, [sp], 16"),
        Q!("    ldp             " "x19, x20, [sp], 16"),

        inout("x0") p3.as_mut_ptr() => _,
        inout("x1") p1.as_ptr() => _,
        // clobbers
        out("x10") _,
        out("x11") _,
        out("x12") _,
        out("x13") _,
        out("x14") _,
        out("x15") _,
        out("x16") _,
        out("x17") _,
        out("x2") _,
        out("x20") _,
        out("x21") _,
        out("x22") _,
        out("x23") _,
        out("x24") _,
        out("x3") _,
        out("x4") _,
        out("x5") _,
        out("x6") _,
        out("x7") _,
        out("x8") _,
        out("x9") _,
            )
    };
}