diff options
| -rw-r--r-- | bsd-user/host/x86_64/host-signal.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/bsd-user/host/x86_64/host-signal.h b/bsd-user/host/x86_64/host-signal.h new file mode 100644 index 0000000000..47ca19f881 --- /dev/null +++ b/bsd-user/host/x86_64/host-signal.h @@ -0,0 +1,37 @@ +/* + * 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/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 |