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      1 /*	$NetBSD: arm_neon_imm.h,v 1.1 2023/08/07 01:07:36 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef	_SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H
     30 #define	_SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H
     31 
     32 /*
     33  * Non-standard macros for writing ARM NEON vector literals.  Needed
     34  * because apparently GCC and Clang disagree wildly on the ordering of
     35  * vector literal components -- and both disagree with the
     36  * architectural indexing!
     37  */
     38 
     39 #if defined(__GNUC__) && !defined(__clang__)
     40 #if defined(__AARCH64EB__)
     41 #define	V_N_U8(a,b,c,d,e,f,g,h)						      \
     42 	{h,g,f,e,d,c,b,a}
     43 #define	VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)			      \
     44 	{p,o,n,m,l,k,j,i, h,g,f,e,d,c,b,a}
     45 #define	VQ_N_U32(a,b,c,d)						      \
     46 	{d,c, b,a}
     47 #elif defined(__ARM_BIG_ENDIAN)
     48 #define	V_N_U8(a,b,c,d,e,f,g,h)						      \
     49 	{h,g,f,e,d,c,b,a}
     50 #define	VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)			      \
     51 	{h,g,f,e,d,c,b,a, p,o,n,m,l,k,j,i}
     52 #define	VQ_N_U32(a,b,c,d)						      \
     53 	{b,a, d,c}
     54 #else
     55 #define	V_N_U8(a,b,c,d,e,f,g,h)						      \
     56 	{a,b,c,d,e,f,g,h}
     57 #define	VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)			      \
     58 	{a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p}
     59 #define	VQ_N_U32(a,b,c,d)						      \
     60 	{a,b, c,d}
     61 #endif
     62 #elif defined(__clang__)
     63 #ifdef __LITTLE_ENDIAN__
     64 #define	V_N_U8(a,b,c,d,e,f,g,h)						      \
     65 	{a,b,c,d,e,f,g,h}
     66 #define	VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)			      \
     67 	{a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p}
     68 #define	VQ_N_U32(a,b,c,d)						      \
     69 	{a,b, c,d}
     70 #else
     71 #define	V_N_U8(a,b,c,d,e,f,g,h)						      \
     72 	{h,g,f,e,d,c,b,a}
     73 #define	VQ_N_U8(a,b,c,d,e,f,g,h, i,j,k,l,m,n,o,p)			      \
     74 	{p,o,n,m,l,k,j,i, h,g,f,e,d,c,b,a}
     75 #define	VQ_N_U32(a,b,c,d)						      \
     76 	{d,c, b,a}
     77 #endif
     78 #endif
     79 
     80 #endif	/* _SYS_CRYPTO_ARCH_ARM_ARM_NEON_IMM_H */
     81