| /* |
| * 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 |
