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This is a function that calls into the EFI Runtime Services, but can handle a fault. To support this add a handler in assembly that can restore the kernel state on an exception and return a failure to the caller. Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D46817
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*-
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* Copyright (c) 1991 Regents of the University of California.
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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 University nor the names of its 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 REGENTS 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 REGENTS 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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* from: FreeBSD: src/sys/i386/include/proc.h,v 1.11 2001/06/29
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*/
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#ifdef __arm__
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#include <arm/proc.h>
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#else /* !__arm__ */
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#ifndef _MACHINE_PROC_H_
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#define _MACHINE_PROC_H_
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struct ptrauth_key {
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uint64_t pa_key_lo;
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uint64_t pa_key_hi;
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};
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struct mdthread {
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int md_spinlock_count; /* (k) */
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register_t md_saved_daif; /* (k) */
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uintptr_t md_canary;
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/*
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* The pointer authentication keys. These are shared within a process,
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* however this may change for some keys as the PAuth ABI Extension to
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* ELF for the Arm 64-bit Architecture [1] is currently (July 2021) at
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* an Alpha release quality so may change.
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*
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* [1] https://github.com/ARM-software/abi-aa/blob/main/pauthabielf64/pauthabielf64.rst
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*/
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struct {
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struct ptrauth_key apia;
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struct ptrauth_key apib;
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struct ptrauth_key apda;
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struct ptrauth_key apdb;
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struct ptrauth_key apga;
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} md_ptrauth_user;
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struct {
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struct ptrauth_key apia;
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} md_ptrauth_kern;
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uint64_t md_efirt_tmp;
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int md_efirt_dis_pf;
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int md_reserved0;
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uint64_t md_reserved[2];
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};
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struct mdproc {
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long md_dummy;
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};
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#define KINFO_PROC_SIZE 1088
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#define KINFO_PROC32_SIZE 816
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#endif /* !_MACHINE_PROC_H_ */
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#endif /* !__arm__ */
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