LXR qemu/bsd-user/host/arm/host-signal.h

   1/*
   2 * host-signal.h: signal info dependent on the host architecture
   3 *
   4 * Copyright (c) 2021 Warner Losh
   5 *
   6 * SPDX-License-Identifier: GPL-2.0-or-later
   7 */
   8
   9#ifndef ARM_HOST_SIGNAL_H
  10#define ARM_HOST_SIGNAL_H
  11
  12#include <sys/ucontext.h>
  13
  14static inline uintptr_t host_signal_pc(ucontext_t *uc)
  15{
  16    return uc->uc_mcontext.__gregs[_REG_PC];
  17}
  18
  19static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
  20{
  21    uc->uc_mcontext.__gregs[_REG_PC] = pc;
  22}
  23
  24static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
  25{
  26    /*
  27     * In the FSR, bit 11 is WnR. FreeBSD returns this as part of the
  28     * si_info.si_trapno.
  29     */
  30    uint32_t fsr = info->si_trapno;
  31
  32    return extract32(fsr, 11, 1);
  33}
  34
  35#endif
  36