arch/arm/include/asm/neon-intrinsics.h

/* SPDX-License-Identifier: GPL-2.0-only */

#ifndef __ASM_NEON_INTRINSICS_H
#define __ASM_NEON_INTRINSICS_H

#ifndef __ARM_NEON__
#error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
#endif

#include <asm-generic/int-ll64.h>

/*
 * The C99 types uintXX_t that are usually defined in 'stdint.h' are not as
 * unambiguous on ARM as you would expect. For the types below, there is a
 * difference on ARM between GCC built for bare metal ARM, GCC built for glibc
 * and the kernel itself, which results in build errors if you try to build
 * with -ffreestanding and include 'stdint.h' (such as when you include
 * 'arm_neon.h' in order to use NEON intrinsics)
 *
 * As the typedefs for these types in 'stdint.h' are based on builtin defines
 * supplied by GCC, we can tweak these to align with the kernel's idea of those
 * types, so 'linux/types.h' and 'stdint.h' can be safely included from the
 * same source file (provided that -ffreestanding is used).
 *
 *                    int32_t     uint32_t          intptr_t     uintptr_t
 * bare metal GCC     long        unsigned long     int          unsigned int
 * glibc GCC          int         unsigned int      int          unsigned int
 * kernel             int         unsigned int      long         unsigned long
 */

#ifdef __INT32_TYPE__
#undef __INT32_TYPE__
#define __INT32_TYPE__		int
#endif

#ifdef __UINT32_TYPE__
#undef __UINT32_TYPE__
#define __UINT32_TYPE__		unsigned int
#endif

#ifdef __INTPTR_TYPE__
#undef __INTPTR_TYPE__
#define __INTPTR_TYPE__		long
#endif

#ifdef __UINTPTR_TYPE__
#undef __UINTPTR_TYPE__
#define __UINTPTR_TYPE__	unsigned long
#endif

/*
 * genksyms chokes on the ARM NEON instrinsics system header, but we
 * don't export anything it defines anyway, so just disregard when
 * genksyms execute.
 */
#ifndef __GENKSYMS__
#include <arm_neon.h>
#endif

#endif /* __ASM_NEON_INTRINSICS_H */