linux-user/signal-common.h

   1 /*
   2  *  Emulation of Linux signals
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef SIGNAL_COMMON_H
  21 #define SIGNAL_COMMON_H
  22 extern struct target_sigaltstack target_sigaltstack_used;
  23
  24 static inline int on_sig_stack(unsigned long sp)
  25 {
  26     return (sp - target_sigaltstack_used.ss_sp
  27             < target_sigaltstack_used.ss_size);
  28 }
  29
  30 static inline int sas_ss_flags(unsigned long sp)
  31 {
  32     return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE
  33             : on_sig_stack(sp) ? SS_ONSTACK : 0);
  34 }
  35
  36 static inline void target_sigemptyset(target_sigset_t *set)
  37 {
  38     memset(set, 0, sizeof(*set));
  39 }
  40
  41 void host_to_target_sigset_internal(target_sigset_t *d,
  42                                     const sigset_t *s);
  43 void target_to_host_sigset_internal(sigset_t *d,
  44                                     const target_sigset_t *s);
  45 void tswap_siginfo(target_siginfo_t *tinfo,
  46                    const target_siginfo_t *info);
  47 void set_sigmask(const sigset_t *set);
  48 void force_sig(int sig);
  49 void force_sigsegv(int oldsig);
  50 #if defined(TARGET_ARCH_HAS_SETUP_FRAME)
  51 void setup_frame(int sig, struct target_sigaction *ka,
  52                  target_sigset_t *set, CPUArchState *env);
  53 #endif
  54 void setup_rt_frame(int sig, struct target_sigaction *ka,
  55                     target_siginfo_t *info,
  56                     target_sigset_t *set, CPUArchState *env);
  57 #endif