2 * host-signal.h: signal info dependent on the host architecture
4 * Copyright (c) 2021 Warner Losh
6 * SPDX-License-Identifier: GPL-2.0-or-later
9 #ifndef X86_64_HOST_SIGNAL_H
10 #define X86_64_HOST_SIGNAL_H
12 #include <sys/ucontext.h>
13 #include <machine/trap.h>
15 #include <machine/pmap.h>
17 static inline uintptr_t host_signal_pc(ucontext_t *uc)
19 return uc->uc_mcontext.mc_rip;
22 static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
24 uc->uc_mcontext.mc_rip = pc;
27 static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
30 * Look in sys/amd64/amd64/trap.c. NOTE: mc_err == tr_err due to type
31 * punning between a trapframe and mcontext on FreeBSD/amd64.
33 return uc->uc_mcontext.mc_trapno == T_PAGEFLT &&
34 uc->uc_mcontext.mc_err & PGEX_W;