/*      $NetBSD: arm_neon_imm.h,v 1.1 2023/08/07 01:07:36 rin Exp $     */

/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H
#define _SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H

/*
* Non-standard macros for writing ARM NEON vector literals.  Needed
* because apparently GCC and Clang disagree wildly on the ordering of
* vector literal components -- and both disagree with the
* architectural indexing!
*/

#if defined(__GNUC__) && !defined(__clang__)
#if defined(__AARCH64EB__)
#define V_N_U8(a,b,c,d,e,f,g,h)                                               \
       {h,g,f,e,d,c,b,a}
#define VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)                             \
       {p,o,n,m,l,k,j,i, h,g,f,e,d,c,b,a}
#define VQ_N_U32(a,b,c,d)                                                     \
       {d,c, b,a}
#elif defined(__ARM_BIG_ENDIAN)
#define V_N_U8(a,b,c,d,e,f,g,h)                                               \
       {h,g,f,e,d,c,b,a}
#define VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)                             \
       {h,g,f,e,d,c,b,a, p,o,n,m,l,k,j,i}
#define VQ_N_U32(a,b,c,d)                                                     \
       {b,a, d,c}
#else
#define V_N_U8(a,b,c,d,e,f,g,h)                                               \
       {a,b,c,d,e,f,g,h}
#define VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)                             \
       {a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p}
#define VQ_N_U32(a,b,c,d)                                                     \
       {a,b, c,d}
#endif
#elif defined(__clang__)
#ifdef __LITTLE_ENDIAN__
#define V_N_U8(a,b,c,d,e,f,g,h)                                               \
       {a,b,c,d,e,f,g,h}
#define VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)                             \
       {a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p}
#define VQ_N_U32(a,b,c,d)                                                     \
       {a,b, c,d}
#else
#define V_N_U8(a,b,c,d,e,f,g,h)                                               \
       {h,g,f,e,d,c,b,a}
#define VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)                             \
       {p,o,n,m,l,k,j,i, h,g,f,e,d,c,b,a}
#define VQ_N_U32(a,b,c,d)                                                     \
       {d,c, b,a}
#endif
#endif

#endif  /* _SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H */

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