1999-04-13 Andrew Haley <aph@cygnus.com>

        * include/i386-signal.h, include/default-signal.h: New files.
        * prims.cc (catch_segv): Call MAKE_THROW_FRAME in exception
        handler.
        (catch_fpe): New function.
        * configure.in: Make link to appropriate include/java-signal.h.
        * configure: Rebuilt.
        * Makefile.am: include/java-signal.h added to dependency list.
        * Makefile.in: Rebuilt.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@26400 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 40 insertions, 16 deletions

diff --git a/libjava/prims.cc b/libjava/prims.cc
index 265e281dcb1..70dc89c1e9b 100644
--- a/libjava/prims.cc
+++ b/libjava/prims.cc
@@ -14,14 +14,12 @@ details.  */
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
-#ifdef HANDLE_SEGV
-#include <signal.h>
-#endif
 
 #pragma implementation "java-array.h"
 
 #include <cni.h>
 #include <jvm.h>
+#include <java-signal.h>
 
 #include <java/lang/Class.h>
 #include <java/lang/Runtime.h>
@@ -30,6 +28,7 @@ details.  */
 #include <java/lang/ThreadGroup.h>
 #include <java/lang/FirstThread.h>
 #include <java/lang/ArrayIndexOutOfBoundsException.h>
+#include <java/lang/ArithmeticException.h>
 #include <java/lang/ClassFormatError.h>
 #include <java/lang/ClassCastException.h>
 #include <java/lang/NegativeArraySizeException.h>
@@ -40,6 +39,7 @@ details.  */
 #include <java/lang/reflect/Modifier.h>
 #include <java/io/PrintStream.h>
 
+
 #define ObjectClass _CL_Q34java4lang6Object
 extern java::lang::Class ObjectClass;
 
@@ -426,19 +426,31 @@ _Jv_NewMultiArray (jclass array_type, jint dimensions, ...)
 
 
 
-#ifdef HANDLE_SEGV
-
+#ifdef HANDLE_SEGV 
 static java::lang::NullPointerException *nullp;
 
 static void
-catch_segv (int)
+catch_segv (int dummy)
 {
+  MAKE_THROW_FRAME(dummy);
   // Don't run `new' in a signal handler, so we always throw the same
-  // null pointer exception.
+  // exception.
   _Jv_Throw (nullp);
 }
+#endif
 
-#endif /* HANDLE_SEGV */
+#ifdef HANDLE_FPE
+static java::lang::ArithmeticException *arithexception;
+
+static void
+catch_fpe (int dummy)
+{
+  MAKE_THROW_FRAME(dummy);
+  // Don't run `new' in a signal handler, so we always throw the same
+  // exception.
+  _Jv_Throw (arithexception);
+}
+#endif
 
 class _Jv_PrimClass : public java::lang::Class
 {
@@ -560,14 +572,26 @@ static java::lang::Thread *main_thread;
 void
 JvRunMain (jclass klass, int argc, const char **argv)
 {
-#ifdef HANDLE_SEGV
-  nullp = new java::lang::NullPointerException ();
-
-  struct sigaction act;
-  act.sa_handler = catch_segv;
-  sigemptyset (&act.sa_mask);
-  act.sa_flags = 0;
-  sigaction (SIGSEGV, &act, NULL);
+#ifdef HANDLE_SEGV 
+  {
+    nullp = new java::lang::NullPointerException ();    
+    struct sigaction act;
+    act.sa_handler = catch_segv;
+    sigemptyset (&act.sa_mask);
+    act.sa_flags = 0;
+    sigaction (SIGSEGV, &act, NULL);
+  }
+#endif
+  
+#ifdef HANDLE_FPE
+  { 
+    arithexception = new java::lang::ArithmeticException ();
+    struct sigaction act;
+    act.sa_handler = catch_fpe;
+    sigemptyset (&act.sa_mask);
+    act.sa_flags = 0;
+    sigaction (SIGFPE, &act, NULL);
+  }
 #endif
 
   no_memory = new java::lang::OutOfMemoryError;