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752eb6a995
Expose some of the new HWCAP features added in r65304. This includes the addition of elf_hwcap2 into the sysvec, and a separate function to parse for those features. This only exposes features which require no further configuration, e.g. indicating the presence of certain instructions. Larger features (SVE) will not be advertised until we actually support them. The exact list of features/extensions this patch exposes is: - ARMv8.0-DGH - ARMv8.0-SB - ARMv8.2-BF16 - ARMv8.2-DCCVADP - ARMv8.2-I8MM - ARMv8.4-LRCPC - ARMv8.5-CondM - ARMv8.5-FRINT - ARMv8.5-RNG - PSTATE.SSBS While here, annotate elf_hwcap and elf_hwcap2 as __read_frequently, and move the declarations to the machine/md_var.h header. Submitted by: mikael@ (D22314 portion) MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D26031 Differential Revision: https://reviews.freebsd.org/D22314
52 lines
2 KiB
C
52 lines
2 KiB
C
/*-
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* Copyright (c) 1995 Bruce D. Evans.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: FreeBSD: src/sys/i386/include/md_var.h,v 1.40 2001/07/12
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MD_VAR_H_
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#define _MACHINE_MD_VAR_H_
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extern long Maxmem;
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extern char sigcode[];
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extern int szsigcode;
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extern uint64_t *vm_page_dump;
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extern int vm_page_dump_size;
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extern u_long elf_hwcap;
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extern u_long elf_hwcap2;
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struct dumperinfo;
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extern int busdma_swi_pending;
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void busdma_swi(void);
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void dump_add_page(vm_paddr_t);
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void dump_drop_page(vm_paddr_t);
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int minidumpsys(struct dumperinfo *);
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#endif /* !_MACHINE_MD_VAR_H_ */
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