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4156e65624
Add a header asm/neon-intrinsics.h similar to the one that arm64 has. This makes it possible for NEON intrinsics code to be shared seamlessly between ARM and arm64. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://patch.msgid.link/20260422171655.3437334-11-ardb+git@google.com Signed-off-by: Eric Biggers <ebiggers@kernel.org>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __ASM_NEON_INTRINSICS_H
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#define __ASM_NEON_INTRINSICS_H
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#ifndef __ARM_NEON__
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#error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
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#endif
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#include <asm-generic/int-ll64.h>
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/*
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* The C99 types uintXX_t that are usually defined in 'stdint.h' are not as
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* unambiguous on ARM as you would expect. For the types below, there is a
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* difference on ARM between GCC built for bare metal ARM, GCC built for glibc
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* and the kernel itself, which results in build errors if you try to build
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* with -ffreestanding and include 'stdint.h' (such as when you include
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* 'arm_neon.h' in order to use NEON intrinsics)
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*
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* As the typedefs for these types in 'stdint.h' are based on builtin defines
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* supplied by GCC, we can tweak these to align with the kernel's idea of those
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* types, so 'linux/types.h' and 'stdint.h' can be safely included from the
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* same source file (provided that -ffreestanding is used).
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*
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* int32_t uint32_t intptr_t uintptr_t
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* bare metal GCC long unsigned long int unsigned int
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* glibc GCC int unsigned int int unsigned int
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* kernel int unsigned int long unsigned long
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*/
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#ifdef __INT32_TYPE__
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#undef __INT32_TYPE__
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#define __INT32_TYPE__ int
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#endif
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#ifdef __UINT32_TYPE__
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#undef __UINT32_TYPE__
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#define __UINT32_TYPE__ unsigned int
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#endif
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#ifdef __INTPTR_TYPE__
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#undef __INTPTR_TYPE__
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#define __INTPTR_TYPE__ long
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#endif
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#ifdef __UINTPTR_TYPE__
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#undef __UINTPTR_TYPE__
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#define __UINTPTR_TYPE__ unsigned long
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#endif
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/*
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* genksyms chokes on the ARM NEON instrinsics system header, but we
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* don't export anything it defines anyway, so just disregard when
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* genksyms execute.
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*/
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#ifndef __GENKSYMS__
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#include <arm_neon.h>
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#endif
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#endif /* __ASM_NEON_INTRINSICS_H */
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