1 files changed, 65 insertions, 1 deletions
diff --git a/gcc/ada/init.c b/gcc/ada/init.c
index fdfd31a..caf3adc 100644
--- a/gcc/ada/init.c
+++ b/gcc/ada/init.c
@@ -1902,6 +1902,69 @@ __gnat_install_handler(void)
   __gnat_handler_installed = 1;
 }
 
+/*******************/
+/* OpenBSD Section */
+/*******************/
+
+#elif defined(__OpenBSD__)
+
+#include <signal.h>
+#include <unistd.h>
+
+static void
+__gnat_error_handler (int sig)
+{
+  struct Exception_Data *exception;
+  const char *msg;
+
+  switch(sig)
+  {
+    case SIGFPE:
+      exception = &constraint_error;
+      msg = "SIGFPE";
+      break;
+    case SIGILL:
+      exception = &constraint_error;
+      msg = "SIGILL";
+      break;
+    case SIGSEGV:
+      exception = &storage_error;
+      msg = "stack overflow or erroneous memory access";
+      break;
+    case SIGBUS:
+      exception = &constraint_error;
+      msg = "SIGBUS";
+      break;
+    default:
+      exception = &program_error;
+      msg = "unhandled signal";
+    }
+
+    Raise_From_Signal_Handler(exception, msg);
+}
+
+void
+__gnat_install_handler(void)
+{
+  struct sigaction act;
+
+  act.sa_handler = __gnat_error_handler;
+  act.sa_flags = SA_NODEFER | SA_RESTART;
+  sigemptyset (&act.sa_mask);
+
+  /* Do not install handlers if interrupt state is "System" */
+  if (__gnat_get_interrupt_state (SIGFPE) != 's')
+    sigaction (SIGFPE,  &act, NULL);
+  if (__gnat_get_interrupt_state (SIGILL) != 's')
+    sigaction (SIGILL,  &act, NULL);
+  if (__gnat_get_interrupt_state (SIGSEGV) != 's')
+    sigaction (SIGSEGV, &act, NULL);
+  if (__gnat_get_interrupt_state (SIGBUS) != 's')
+    sigaction (SIGBUS,  &act, NULL);
+
+  __gnat_handler_installed = 1;
+}
+
 #else
 
 /* For all other versions of GNAT, the handler does nothing */
@@ -1927,7 +1990,8 @@ __gnat_install_handler (void)
    WIN32 and could be used under OS/2 */
 
 #if defined (_WIN32) || defined (__INTERIX) || defined (__EMX__) \
-  || defined (__Lynx__) || defined(__NetBSD__) || defined(__FreeBSD__)
+  || defined (__Lynx__) || defined(__NetBSD__) || defined(__FreeBSD__) \
+  || defined (__OpenBSD__)
 
 #define HAVE_GNAT_INIT_FLOAT