LXR qemu/linux-user/include/host/arm/host-signal.h

   1/*
   2 * host-signal.h: signal info dependent on the host architecture
   3 *
   4 * Copyright (c) 2003-2005 Fabrice Bellard
   5 * Copyright (c) 2021 Linaro Limited
   6 *
   7 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
   8 * See the COPYING file in the top-level directory.
   9 */
  10
  11#ifndef ARM_HOST_SIGNAL_H
  12#define ARM_HOST_SIGNAL_H
  13
  14/* The third argument to a SA_SIGINFO handler is ucontext_t. */
  15typedef ucontext_t host_sigcontext;
  16
  17static inline uintptr_t host_signal_pc(host_sigcontext *uc)
  18{
  19    return uc->uc_mcontext.arm_pc;
  20}
  21
  22static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
  23{
  24    uc->uc_mcontext.arm_pc = pc;
  25}
  26
  27static inline void *host_signal_mask(host_sigcontext *uc)
  28{
  29    return &uc->uc_sigmask;
  30}
  31
  32static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
  33{
  34    /*
  35     * In the FSR, bit 11 is WnR, assuming a v6 or
  36     * later processor.  On v5 we will always report
  37     * this as a read, which will fail later.
  38     */
  39    uint32_t fsr = uc->uc_mcontext.error_code;
  40    return extract32(fsr, 11, 1);
  41}
  42
  43#endif
  44