/*
 * Copyright (c) The mldsa-native project authors
 * Copyright (c) The mlkem-native project authors
 * SPDX-License-Identifier: Apache-2.0 OR ISC OR MIT
 */

 #include "../../../common.h"
#if defined(MLD_ARITH_BACKEND_AARCH64) && !defined(MLD_CONFIG_MULTILEVEL_NO_SHARED)

/*
 * WARNING: This file is auto-derived from the mldsa-native source file
 *   dev/aarch64_opt/src/polyz_unpack_19_asm.S using scripts/simpasm. Do not modify it directly.
 */

#if defined(__ELF__)
.section .note.GNU-stack,"",@progbits
#endif

.text
.balign 4
.global MLD_ASM_NAMESPACE(polyz_unpack_19_asm)
MLD_ASM_FN_SYMBOL(polyz_unpack_19_asm)

        .cfi_startproc
        ldr	q24, [x2]
        ldr	q25, [x2, #0x10]
        ldr	q26, [x2, #0x20]
        ldr	q27, [x2, #0x30]
        mov	x3, #0xfc00000000       // =1082331758592
        dup	v28.2d, x3
        movi	v29.4s, #0xf, msl #16
        movi	v30.4s, #0x8, lsl #16
        mov	x9, #0x10               // =16

Lpolyz_unpack_19_loop:
        ldr	q1, [x1, #0x10]
        ldr	d2, [x1, #0x20]
        ldr	q0, [x1], #0x28
        tbl	v4.16b, { v0.16b }, v24.16b
        tbl	v5.16b, { v0.16b, v1.16b }, v25.16b
        tbl	v6.16b, { v1.16b }, v26.16b
        tbl	v7.16b, { v1.16b, v2.16b }, v27.16b
        ushl	v4.4s, v4.4s, v28.4s
        and	v4.16b, v4.16b, v29.16b
        sub	v4.4s, v30.4s, v4.4s
        ushl	v5.4s, v5.4s, v28.4s
        and	v5.16b, v5.16b, v29.16b
        sub	v5.4s, v30.4s, v5.4s
        ushl	v6.4s, v6.4s, v28.4s
        and	v6.16b, v6.16b, v29.16b
        sub	v6.4s, v30.4s, v6.4s
        ushl	v7.4s, v7.4s, v28.4s
        and	v7.16b, v7.16b, v29.16b
        sub	v7.4s, v30.4s, v7.4s
        str	q5, [x0, #0x10]
        str	q6, [x0, #0x20]
        str	q7, [x0, #0x30]
        str	q4, [x0], #0x40
        subs	x9, x9, #0x1
        b.ne	Lpolyz_unpack_19_loop
        ret
        .cfi_endproc

#endif /* MLD_ARITH_BACKEND_AARCH64 && !MLD_CONFIG_MULTILEVEL_NO_SHARED */
