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