40a1db2434
The ARM v8.1 architecture introduces new atomic instructions to the A64 instruction set for things like cmpxchg, so advertise their availability to userspace using a hwcap. Reviewed-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
33 lines
1 KiB
C
33 lines
1 KiB
C
/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _UAPI__ASM_HWCAP_H
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#define _UAPI__ASM_HWCAP_H
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/*
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* HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
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*/
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#define HWCAP_FP (1 << 0)
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#define HWCAP_ASIMD (1 << 1)
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#define HWCAP_EVTSTRM (1 << 2)
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#define HWCAP_AES (1 << 3)
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#define HWCAP_PMULL (1 << 4)
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#define HWCAP_SHA1 (1 << 5)
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#define HWCAP_SHA2 (1 << 6)
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#define HWCAP_CRC32 (1 << 7)
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#define HWCAP_ATOMICS (1 << 8)
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#endif /* _UAPI__ASM_HWCAP_H */
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