import winsup-2000-02-17 snapshot

winsup/mingw/include/setjmp.h

@@ -0,0 +1,72 @@
+/* 
+ * setjmp.h
+ *
+ * Declarations supporting setjmp and longjump, a method for avoiding
+ * the normal function call return sequence. (Bleah!)
+ *
+ * This file is part of the Mingw32 package.
+ *
+ * Contributors:
+ *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
+ *
+ *  THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ *  This source code is offered for use in the public domain. You may
+ *  use, modify or distribute it freely.
+ *
+ *  This code is distributed in the hope that it will be useful but
+ *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ *  DISCLAMED. This includes but is not limited to warranties of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Revision$
+ * $Author$
+ * $Date$
+ *
+ */
+
+#ifndef _SETJMP_H_
+#define _SETJMP_H_
+
+/* All the headers include this file. */
+#include <_mingw.h>
+
+#ifndef RC_INVOKED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The buffer used by setjmp to store the information used by longjmp
+ * to perform it's evil goto-like work. The size of this buffer was
+ * determined through experimentation; it's contents are a mystery.
+ * NOTE: This was determined on an i386 (actually a Pentium). The
+ *       contents could be different on an Alpha or something else.
+ */
+#define _JBLEN 16
+#define _JBTYPE int
+typedef _JBTYPE jmp_buf[_JBLEN];
+
+/*
+ * The function provided by CRTDLL which appears to do the actual work
+ * of setjmp.
+ */
+int	_setjmp (jmp_buf);
+
+#define	setjmp(x)	_setjmp(x)
+
+/*
+ * Return to the last setjmp call and act as if setjmp had returned
+ * nVal (which had better be non-zero!).
+ */
+void	longjmp (jmp_buf, int);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* Not RC_INVOKED */
+
+#endif	/* Not _SETJMP_H_ */
+