1 files changed, 112 insertions, 0 deletions
diff --git a/libguile/stackchk.c b/libguile/stackchk.c
new file mode 100644
index 000000000..53a7556be
--- /dev/null
+++ b/libguile/stackchk.c
@@ -0,0 +1,112 @@
+/*	Copyright (C) 1995,1996 Free Software Foundation, Inc.
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE.  If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way.  To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.  
+ */
+
+
+#include <stdio.h>
+#include "_scm.h"
+
+
+
+/* {Stack Checking}
+ */
+
+#ifdef SCM_STACK_CHECK
+int scm_check_stack_p;
+
+void
+scm_report_stack_overflow ()
+{
+  scm_check_stack_p = 0;
+  scm_wta (SCM_UNDEFINED, (char *) STACK_SCM_OVSCM_FLOW, NULL);
+}
+
+#endif
+#ifdef __STDC__
+long 
+scm_stack_size (SCM_STACKITEM *start)
+#else
+long 
+scm_stack_size (start)
+     SCM_STACKITEM *start;
+#endif
+{
+  SCM_STACKITEM stack;
+#ifdef SCM_STACK_GROWS_UP
+  return &stack - start;
+#else
+  return start - &stack;
+#endif /* def SCM_STACK_GROWS_UP */
+}
+
+#ifdef __STDC__
+void 
+scm_stack_report (void)
+#else
+void 
+scm_stack_report ()
+#endif
+{
+  SCM_STACKITEM stack;
+  scm_intprint (scm_stack_size (SCM_BASE (scm_rootcont)) * sizeof (SCM_STACKITEM),
+		16, scm_cur_errp);
+  scm_gen_puts (scm_regular_string, " of stack: 0x", scm_cur_errp);
+  scm_intprint ((long) SCM_BASE (scm_rootcont), 16, scm_cur_errp);
+  scm_gen_puts (scm_regular_string, " - 0x", scm_cur_errp);
+  scm_intprint ((long) &stack, 16, scm_cur_errp);
+  scm_gen_puts (scm_regular_string, "\n", scm_cur_errp);
+}
+
+
+
+#ifdef __STDC__
+void
+scm_init_stackchk (void)
+#else
+void
+scm_init_stackchk ()
+#endif
+{
+#ifdef SCM_STACK_CHECK
+  scm_check_stack_p = 1;
+#endif
+#include "stackchk.x"
+}
+