LXR qemu/linux-user/include/host/x86

   1/*
   2 * host-signal.h: signal info dependent on the host architecture
   3 *
   4 * Copyright (C) 2021 Linaro Limited
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9
  10#ifndef X86_64_HOST_SIGNAL_H
  11#define X86_64_HOST_SIGNAL_H
  12
  13/* The third argument to a SA_SIGINFO handler is ucontext_t. */
  14typedef ucontext_t host_sigcontext;
  15
  16static inline uintptr_t host_signal_pc(host_sigcontext *uc)
  17{
  18    return uc->uc_mcontext.gregs[REG_RIP];
  19}
  20
  21static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
  22{
  23    uc->uc_mcontext.gregs[REG_RIP] = pc;
  24}
  25
  26static inline void *host_signal_mask(host_sigcontext *uc)
  27{
  28    return &uc->uc_sigmask;
  29}
  30
  31static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
  32{
  33    return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe
  34        && (uc->uc_mcontext.gregs[REG_ERR] & 0x2);
  35}
  36
  37#endif
  38