Subdirectory g++ contains C++ shared library helper routines.

lib/csu/Makefile

@@ -1,5 +1,5 @@
-#	$Id: Makefile,v 1.3 1993/12/04 22:39:21 cgd Exp $
+#	$Id: Makefile,v 1.4 1994/01/05 21:05:11 pk Exp $
 
-SUBDIR=	${MACHINE_ARCH}
+SUBDIR=	${MACHINE_ARCH} g++
 
 .include <bsd.subdir.mk>

lib/csu/g++/Makefile

@@ -0,0 +1,18 @@
+#	$Id: Makefile,v 1.1 1994/01/05 21:05:33 pk Exp $
+
+CFLAGS+=	-DLIBC_SCCS
+OBJS=		c++rt0.o
+
+all: ${OBJS}
+
+c++rt0.o: c++rt0.c
+	${CC} ${CFLAGS} -c ${.ALLSRC}
+	${LD} -x -r ${.TARGET}
+	mv a.out ${.TARGET}
+
+install:
+	install -d -o ${BINOWN} -g ${BINGRP} -m 0755 ${DESTDIR}/usr/lib
+	install ${COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
+	    ${DESTDIR}/usr/lib
+
+.include <bsd.prog.mk>

lib/csu/g++/c++rt0.c

@@ -0,0 +1,57 @@
+/*
+ * CRT module for GNU C++ compiles shared libraries.
+ *
+ * $Id: c++rt0.c,v 1.1 1994/01/05 21:05:37 pk Exp $
+ */
+
+void (*__CTOR_LIST__[2])(void);
+void (*__DTOR_LIST__[2])(void);
+
+/* Run all the global destructors on exit from the program.  */
+ 
+static void
+__do_global_dtors(void)
+{
+	unsigned long nptrs = (unsigned long) __DTOR_LIST__[0];
+	unsigned i;
+ 
+	/*
+	 * Some systems place the number of pointers
+	 * in the first word of the table.
+	 * On other systems, that word is -1.
+	 * In all cases, the table is null-terminated.
+	 */
+ 
+	/* If the length is not recorded, count up to the null. */
+	if (nptrs == -1)
+		for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++);
+ 
+	/* GNU LD format.  */
+	for (i = nptrs; i >= 1; i--)
+		__DTOR_LIST__[i] ();
+
+}
+
+static void
+__do_global_ctors(void)
+{
+	void (**p)(void);
+
+	for (p = __CTOR_LIST__ + 1; *p; )
+		(**p++)();
+}
+
+extern void __init() asm(".init");
+
+void
+__init(void)
+{
+	static int initialized = 0;
+
+	if (!initialized) {
+		initialized = 1;
+		__do_global_ctors();
+		atexit(__do_global_dtors);
+	}
+
+}