E: little hack to handle valid SIGILL.

SVN revision: 78976

src/bin/e_signals.c

@@ -71,12 +71,19 @@ e_sigseg_act(int x __UNUSED__, siginfo_t *info __UNUSED__, void *data __UNUSED__
 EAPI void
 e_sigill_act(int x __UNUSED__, siginfo_t *info __UNUSED__, void *data __UNUSED__)
 {
-   _e_x_composite_shutdown();
-   ecore_x_pointer_ungrab();
-   ecore_x_keyboard_ungrab();
-   ecore_x_ungrab();
-   ecore_x_sync();
-   e_alert_show();
+   // In case of a sigill in Enlightenment, Enlightenment start will catch the sigill and continue,
+   // because evas cpu detection use that behaviour. But if we get a SIGILL after that, we endup in
+   // this sig handler. So E start remember the SIGILL, and we will commit succide with a USR1, followed
+   // by a SEGV.
+   kill(getpid(), SIGUSR1);
+   kill(getpid(), SIGSEGV);
+   pause();
+   /* _e_x_composite_shutdown(); */
+   /* ecore_x_pointer_ungrab(); */
+   /* ecore_x_keyboard_ungrab(); */
+   /* ecore_x_ungrab(); */
+   /* ecore_x_sync(); */
+   /* e_alert_show(); */
 }
 
 EAPI void

src/bin/e_start_main.c

@@ -415,7 +415,10 @@ main(int argc, char **argv)
 
              while (!done)
                {
-                  result = waitpid(child, &status, 0);
+		  Eina_Bool remember_sigill = EINA_FALSE;
+		  Eina_Bool remember_sigusr1 = EINA_FALSE;
+
+		  result = waitpid(child, &status, 0);
 
                   if (result == child)
                     {
@@ -431,9 +434,22 @@ main(int argc, char **argv)
                             back = r == 0 &&
                               sig.si_signo != SIGTRAP ? sig.si_signo : 0;
 
+			    if (sig.si_signo == SIGUSR1)
+			      {
+				 if (remember_sigill)
+				   remember_sigusr1 = EINA_TRUE;
+			      }
+			    else if (sig.si_signo == SIGILL)
+			      {
+				 remember_sigill = EINA_TRUE;
+			      }
+			    else
+			      {
+			 	 remember_sigill = EINA_FALSE;
+			      }
+
                             if (r != 0 ||
                                 (sig.si_signo != SIGSEGV &&
-                                 sig.si_signo != SIGILL &&
                                  sig.si_signo != SIGFPE &&
                                  sig.si_signo != SIGBUS &&
                                  sig.si_signo != SIGABRT))
@@ -470,7 +486,7 @@ main(int argc, char **argv)
                             snprintf(buffer, 4096,
                                      backtrace_str ? "%s/enlightenment/utils/enlightenment_alert %i %i %s" : "%s/enlightenment/utils/enlightenment_alert %i %i %s",
                                      eina_prefix_lib_get(pfx),
-                                     sig.si_signo,
+                                     sig.si_signo == SIGSEGV && remember_sigusr1 ? SIGILL : sig.si_signo,
                                      child,
                                      backtrace_str);
                             r = system(buffer);