#include "gdbsupport/buffer.h"
#include "ser-event.h"
#include "gdb_select.h"
+#include "gdbsupport/gdb-sigmask.h"
/* readline include files. */
#include "readline/readline.h"
}
\f
+/* See event-top.h. */
+
+thread_local void (*thread_local_segv_handler) (int);
+
+static void handle_sigsegv (int sig);
+
+/* Install the SIGSEGV handler. */
+static void
+install_handle_sigsegv ()
+{
+#if defined (HAVE_SIGACTION)
+ struct sigaction sa;
+ sa.sa_handler = handle_sigsegv;
+ sigemptyset (&sa.sa_mask);
+#ifdef HAVE_SIGALTSTACK
+ sa.sa_flags = SA_ONSTACK;
+#else
+ sa.sa_flags = 0;
+#endif
+ sigaction (SIGSEGV, &sa, nullptr);
+#else
+ signal (SIGSEGV, handle_sigsegv);
+#endif
+}
+
+/* Handler for SIGSEGV. */
+
+static void
+handle_sigsegv (int sig)
+{
+ install_handle_sigsegv ();
+
+ if (thread_local_segv_handler == nullptr)
+ abort ();
+ thread_local_segv_handler (sig);
+}
+
+\f
+
/* The serial event associated with the QUIT flag. set_quit_flag sets
this, and check_quit_flag clears it. Used by interruptible_select
to be able to do interruptible I/O with no race with the SIGINT
sigtstp_token =
create_async_signal_handler (async_sigtstp_handler, NULL);
#endif
+
+ install_handle_sigsegv ();
}
/* See defs.h. */
sigset_t zero;
sigemptyset (&zero);
- sigprocmask (SIG_SETMASK, &zero, 0);
+ gdb_sigmask (SIG_SETMASK, &zero, 0);
}
#elif HAVE_SIGSETMASK
sigsetmask (0);