* Bring back the guts of crt{i,n}.S. This allows C++ exceptions to work

when using the egcs and gcc-devel ports, along with GCC built from stock
public FSF sources.  With out this change, FreeBSD will be removed from
the list of systems GCC 3.0 must be evaluated on before release.  With
the effort some of us put into getting FreeBSD on this list, we should
not turn this effort into a waste, else we might not be worth fighting
for in the future.  (note that Alpha and IA-64 versions of crt{i,n}.S
are needed)

* Switch from our own crt{begin,in} to those created from GCC's crtstuff.c.
This will allow us to switch to DWARF2 exceptions in the future, along with
staying in sync with any future GCC requirements.

* Break out our ELF branding bits into a seperate file.  Currently this
is now included by our crt1.c files (since this functionality was part of
our native crtbegin.c).  Later crtbrand.o will be merged in the creation
of crti.o.

Makefile.inc1

@@ -650,6 +650,7 @@ includes:
 .if exists(${.CURDIR}/lib/csu/${MACHINE_ARCH})
 	cd ${.CURDIR}/lib/csu/${MACHINE_ARCH};	${MAKE} beforeinstall
 .endif
+	cd ${.CURDIR}/gnu/lib/csu;		${MAKE} beforeinstall
 	cd ${.CURDIR}/lib/libalias;		${MAKE} beforeinstall
 	cd ${.CURDIR}/lib/libatm;		${MAKE} beforeinstall
 	cd ${.CURDIR}/lib/libdevstat;		${MAKE} beforeinstall
@@ -745,7 +746,7 @@ _libkeycap=	usr.sbin/pcvt/keycap
 .endif
 
 libraries:
-.for _lib in ${_csu} lib/libmd lib/libcrypt ${_secure_lib} ${_kerberosIV_lib} \
+.for _lib in ${_csu} gnu/lib/csu lib/libmd lib/libcrypt ${_secure_lib} ${_kerberosIV_lib} \
     ${_kerberos5_lib} gnu/lib/libgcc lib/libcom_err ${_libm} lib/libncurses \
     lib/libopie lib/libradius lib/libskey lib/libtacplus lib/libutil \
     lib/libz lib gnu/lib \

gnu/lib/Makefile

@@ -1,6 +1,6 @@
 # $FreeBSD$
 
-SUBDIR= libdialog libgcc libgcc_r libgmp libmp libregex libreadline
+SUBDIR= csu libdialog libgcc libgcc_r libgmp libmp libregex libreadline
 
 .if !defined(NO_CXX)
 SUBDIR+= libstdc++

gnu/lib/csu/Makefile

@@ -0,0 +1,56 @@
+# $FreeBSD$
+
+GCCDIR=	${.CURDIR}/../../../contrib/gcc.295
+.PATH: ${GCCDIR}
+
+SRCS=		crtstuff.c tm.h
+OBJS=		crtbegin.o crtend.o
+SOBJS=		crtbegin.So crtend.So
+CFLAGS+=	-I${GCCDIR}/config -I. -DIN_GCC \
+		-finhibit-size-directive -fno-inline-functions \
+		-fno-exceptions -fno-omit-frame-pointer
+NOMAN=		true
+NOPIC=		true
+NOPROFILE=	true
+INTERNALLIB=	true
+CLEANFILES+=	tm.h
+
+CRTS_CFLAGS=	-DCRTSTUFFS_O ${PICFLAG}
+
+all: ${OBJS} ${SOBJS}
+
+crtbegin.o:	crtstuff.c tm.h
+	${CC} ${CFLAGS} -g0 -DCRT_BEGIN \
+		-c -o ${.TARGET} ${GCCDIR}/crtstuff.c
+
+crtbegin.So:	crtstuff.c tm.h
+	${CC} ${CFLAGS} -g0 -DCRT_BEGIN ${CRTS_CFLAGS} \
+		-c -o ${.TARGET} ${GCCDIR}/crtstuff.c
+
+crtend.o:	crtstuff.c tm.h
+	${CC} ${CFLAGS} -g0 -DCRT_END \
+		-c -o ${.TARGET} ${GCCDIR}/crtstuff.c
+
+crtend.So:	crtstuff.c tm.h
+	${CC} ${CFLAGS} -g0 -DCRT_END ${CRTS_CFLAGS} \
+		-c -o ${.TARGET} ${GCCDIR}/crtstuff.c
+
+#	KEEP THIS IN SYNC with src/gnu/usr.bin/cc/cc_tools/Makefile !!
+tm.h:
+	echo '#include "${MACHINE_ARCH}/${MACHINE_ARCH}.h"'	> ${.TARGET}
+.if ${MACHINE_ARCH} == "i386"
+	echo '#include "${MACHINE_ARCH}/att.h"'			>> ${.TARGET}
+.endif
+	echo '#include <freebsd.h>'				>> ${.TARGET}
+	echo '#include "${MACHINE_ARCH}/freebsd.h"'		>> ${.TARGET}
+.if ${MACHINE_ARCH} == "i386"
+	echo '#include "${MACHINE_ARCH}/perform.h"'		>> ${.TARGET}
+.endif
+
+realinstall:
+.for file in ${OBJS} ${SOBJS}
+	${INSTALL} ${COPY} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
+	    ${file} ${DESTDIR}${LIBDIR}/${file:S/.So$/S.o/}
+.endfor
+
+.include <bsd.lib.mk>

lib/csu/alpha/Makefile

@@ -2,11 +2,11 @@
 # $FreeBSD$
 #
 
-SRCS=		crt1.c crtbegin.c crtend.c
-OBJS=		crt1.o crtbegin.o crtend.o
+SRCS=		crt1.c
+OBJS=		crt1.o
 OBJS+=		gcrt1.o
-SOBJS=		crtbegin.So crtend.So
-CFLAGS+=	-Wall -Wno-unused
+CFLAGS+=	-Wall -Wno-unused \
+		-I${.CURDIR}/../common
 NOMAN=		true
 NOPIC=		true
 NOPROFILE=	true

lib/csu/alpha/crt1.c

@@ -38,6 +38,7 @@
 #endif
 
 #include <stdlib.h>
+#include "crtbrand.c"
 
 struct Struct_Obj_Entry;
 struct ps_strings;

lib/csu/amd64/Makefile

@@ -2,11 +2,11 @@
 # $FreeBSD$
 #
 
-SRCS=		crt1.c crtbegin.c crtend.c crti.S crtn.S
+SRCS=		crt1.c crti.S crtn.S
 OBJS=		${SRCS:N*.h:R:S/$/.o/g}
 OBJS+=		gcrt1.o
-SOBJS=		crtbegin.So crtend.So
-CFLAGS+=	-elf -Wall -fkeep-inline-functions
+CFLAGS+=	-elf -Wall -fkeep-inline-functions \
+		-I${.CURDIR}/../common
 LDFLAGS+=	-elf
 NOMAN=		true
 NOPIC=		true

lib/csu/amd64/crt1.c

@@ -31,6 +31,7 @@
 
 #include <stddef.h>
 #include <stdlib.h>
+#include "crtbrand.c"
 
 typedef void (*fptr)(void);
 

lib/csu/amd64/crti.S

@@ -25,7 +25,14 @@
  * $FreeBSD$
  */
 
-/*
- * This file is not used any more.  It will go away as soon as the gcc
- * linker specs have been updated accordingly.
- */
+	.section .init,"ax",@progbits
+	.align	4
+	.globl	_init
+	.type	_init,@function
+_init:
+
+	.section .fini,"ax",@progbits
+	.align	4
+	.globl	_fini
+	.type	_fini,@function
+_fini:

lib/csu/amd64/crtn.S

@@ -25,7 +25,8 @@
  * $FreeBSD$
  */
 
-/*
- * This file is not used any more.  It will go away as soon as the gcc
- * linker specs have been updated accordingly.
- */
+	.section .init,"ax",@progbits
+	ret
+
+	.section .fini,"ax",@progbits
+	ret

lib/csu/common/crtbegin.c

@@ -82,21 +82,4 @@ _fini(void)
 	(*p_do_dtors)();
 }
 
-/*
- * Special ".note" entry specifying the ABI version.  See
- * http://www.netbsd.org/Documentation/kernel/elf-notes.html
- * for more information.
- */
-static const struct {
-    int32_t	namesz;
-    int32_t	descsz;
-    int32_t	type;
-    char	name[sizeof ABI_VENDOR];
-    int32_t	desc;
-} abitag __attribute__ ((section (ABI_SECTION))) = {
-    sizeof ABI_VENDOR,
-    sizeof(int32_t),
-    ABI_NOTETYPE,
-    ABI_VENDOR,
-    __FreeBSD_version
-};
+#include "crtbegin.c"

lib/csu/common/crtbrand.c

@@ -0,0 +1,51 @@
+/*-
+ * Copyright 1996, 1997, 1998, 2000 John D. Polstra.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+
+#define ABI_VENDOR	"FreeBSD"
+#define ABI_SECTION	".note.ABI-tag"
+#define ABI_NOTETYPE	1
+
+/*
+ * Special ".note" entry specifying the ABI version.  See
+ * http://www.netbsd.org/Documentation/kernel/elf-notes.html
+ * for more information.
+ */
+static const struct {
+    int32_t	namesz;
+    int32_t	descsz;
+    int32_t	type;
+    char	name[sizeof ABI_VENDOR];
+    int32_t	desc;
+} abitag __attribute__ ((section (ABI_SECTION))) = {
+    sizeof ABI_VENDOR,
+    sizeof(int32_t),
+    ABI_NOTETYPE,
+    ABI_VENDOR,
+    __FreeBSD_version
+};

lib/csu/i386-elf/Makefile

@@ -2,11 +2,11 @@
 # $FreeBSD$
 #
 
-SRCS=		crt1.c crtbegin.c crtend.c crti.S crtn.S
+SRCS=		crt1.c crti.S crtn.S
 OBJS=		${SRCS:N*.h:R:S/$/.o/g}
 OBJS+=		gcrt1.o
-SOBJS=		crtbegin.So crtend.So
-CFLAGS+=	-elf -Wall -fkeep-inline-functions
+CFLAGS+=	-elf -Wall -fkeep-inline-functions \
+		-I${.CURDIR}/../common
 LDFLAGS+=	-elf
 NOMAN=		true
 NOPIC=		true

lib/csu/i386-elf/crt1.c

@@ -31,6 +31,7 @@
 
 #include <stddef.h>
 #include <stdlib.h>
+#include "crtbrand.c"
 
 typedef void (*fptr)(void);
 

lib/csu/i386-elf/crti.S

@@ -25,7 +25,14 @@
  * $FreeBSD$
  */
 
-/*
- * This file is not used any more.  It will go away as soon as the gcc
- * linker specs have been updated accordingly.
- */
+	.section .init,"ax",@progbits
+	.align	4
+	.globl	_init
+	.type	_init,@function
+_init:
+
+	.section .fini,"ax",@progbits
+	.align	4
+	.globl	_fini
+	.type	_fini,@function
+_fini:

lib/csu/i386-elf/crtn.S

@@ -25,7 +25,8 @@
  * $FreeBSD$
  */
 
-/*
- * This file is not used any more.  It will go away as soon as the gcc
- * linker specs have been updated accordingly.
- */
+	.section .init,"ax",@progbits
+	ret
+
+	.section .fini,"ax",@progbits
+	ret

lib/csu/ia64/Makefile

@@ -7,6 +7,7 @@ OBJS=		crt1.o crtbegin.o crtend.o
 OBJS+=		gcrt1.o
 SOBJS=		crtbegin.So crtend.So
 CFLAGS+=	-Wall -Wno-unused
+CFLAGS+=	-I${.CURDIR}/../common
 NOMAN=		true
 NOPIC=		true
 NOPROFILE=	true

lib/csu/ia64/crt1.c

@@ -38,6 +38,7 @@
 #endif
 
 #include <stdlib.h>
+#include "crtbrand.c"
 
 struct Struct_Obj_Entry;
 struct ps_strings;