From ae7c8a2bb8d926e24ef7ccf3a3e091d2d1fbc280 Mon Sep 17 00:00:00 2001 From: "David E. O'Brien" Date: Sat, 28 Oct 2000 21:26:48 +0000 Subject: * 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. --- lib/csu/alpha/Makefile | 8 ++++---- lib/csu/alpha/crt1.c | 1 + lib/csu/amd64/Makefile | 6 +++--- lib/csu/amd64/crt1.c | 1 + lib/csu/amd64/crti.S | 15 ++++++++++---- lib/csu/amd64/crtn.S | 9 +++++---- lib/csu/common/crtbegin.c | 19 +----------------- lib/csu/common/crtbrand.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++ lib/csu/i386-elf/Makefile | 6 +++--- lib/csu/i386-elf/crt1.c | 1 + lib/csu/i386-elf/crti.S | 15 ++++++++++---- lib/csu/i386-elf/crtn.S | 9 +++++---- lib/csu/ia64/Makefile | 1 + lib/csu/ia64/crt1.c | 1 + 14 files changed, 99 insertions(+), 44 deletions(-) create mode 100644 lib/csu/common/crtbrand.c (limited to 'lib') diff --git a/lib/csu/alpha/Makefile b/lib/csu/alpha/Makefile index d2155684420a4..519446e85b5d4 100644 --- a/lib/csu/alpha/Makefile +++ b/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 diff --git a/lib/csu/alpha/crt1.c b/lib/csu/alpha/crt1.c index 095effc3a0229..40c08988cc32e 100644 --- a/lib/csu/alpha/crt1.c +++ b/lib/csu/alpha/crt1.c @@ -38,6 +38,7 @@ #endif #include +#include "crtbrand.c" struct Struct_Obj_Entry; struct ps_strings; diff --git a/lib/csu/amd64/Makefile b/lib/csu/amd64/Makefile index 70e66b16d1658..2082a70500691 100644 --- a/lib/csu/amd64/Makefile +++ b/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 diff --git a/lib/csu/amd64/crt1.c b/lib/csu/amd64/crt1.c index 0ee070227107f..ad1d25f95b819 100644 --- a/lib/csu/amd64/crt1.c +++ b/lib/csu/amd64/crt1.c @@ -31,6 +31,7 @@ #include #include +#include "crtbrand.c" typedef void (*fptr)(void); diff --git a/lib/csu/amd64/crti.S b/lib/csu/amd64/crti.S index 536d2c243efad..82b262f4dcbe6 100644 --- a/lib/csu/amd64/crti.S +++ b/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: diff --git a/lib/csu/amd64/crtn.S b/lib/csu/amd64/crtn.S index 536d2c243efad..361ab1e2e157f 100644 --- a/lib/csu/amd64/crtn.S +++ b/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 diff --git a/lib/csu/common/crtbegin.c b/lib/csu/common/crtbegin.c index 7693d2be64ed9..172ee4bafd86b 100644 --- a/lib/csu/common/crtbegin.c +++ b/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" diff --git a/lib/csu/common/crtbrand.c b/lib/csu/common/crtbrand.c new file mode 100644 index 0000000000000..aef659af8d397 --- /dev/null +++ b/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 + +#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 +}; diff --git a/lib/csu/i386-elf/Makefile b/lib/csu/i386-elf/Makefile index 70e66b16d1658..2082a70500691 100644 --- a/lib/csu/i386-elf/Makefile +++ b/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 diff --git a/lib/csu/i386-elf/crt1.c b/lib/csu/i386-elf/crt1.c index 0ee070227107f..ad1d25f95b819 100644 --- a/lib/csu/i386-elf/crt1.c +++ b/lib/csu/i386-elf/crt1.c @@ -31,6 +31,7 @@ #include #include +#include "crtbrand.c" typedef void (*fptr)(void); diff --git a/lib/csu/i386-elf/crti.S b/lib/csu/i386-elf/crti.S index 536d2c243efad..82b262f4dcbe6 100644 --- a/lib/csu/i386-elf/crti.S +++ b/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: diff --git a/lib/csu/i386-elf/crtn.S b/lib/csu/i386-elf/crtn.S index 536d2c243efad..361ab1e2e157f 100644 --- a/lib/csu/i386-elf/crtn.S +++ b/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 diff --git a/lib/csu/ia64/Makefile b/lib/csu/ia64/Makefile index fc988570ed3a4..41c0aa8806b08 100644 --- a/lib/csu/ia64/Makefile +++ b/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 diff --git a/lib/csu/ia64/crt1.c b/lib/csu/ia64/crt1.c index 8fa06ba642573..4f5923339e8ee 100644 --- a/lib/csu/ia64/crt1.c +++ b/lib/csu/ia64/crt1.c @@ -38,6 +38,7 @@ #endif #include +#include "crtbrand.c" struct Struct_Obj_Entry; struct ps_strings; -- cgit v1.3