38 lines
849 B
C
38 lines
849 B
C
/*
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* host-signal.h: signal info dependent on the host architecture
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*
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* Copyright (c) 2021 Warner Losh
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef X86_64_HOST_SIGNAL_H
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#define X86_64_HOST_SIGNAL_H
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#include <sys/ucontext.h>
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#include <machine/trap.h>
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#include <vm/pmap.h>
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#include <machine/pmap.h>
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static inline uintptr_t host_signal_pc(ucontext_t *uc)
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{
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return uc->uc_mcontext.mc_rip;
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}
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static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
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{
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uc->uc_mcontext.mc_rip = pc;
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}
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static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
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{
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/*
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* Look in sys/amd64/amd64/trap.c. NOTE: mc_err == tr_err due to type
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* punning between a trapframe and mcontext on FreeBSD/amd64.
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*/
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return uc->uc_mcontext.mc_trapno == T_PAGEFLT &&
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uc->uc_mcontext.mc_err & PGEX_W;
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}
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#endif
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