2002-09-16 Bruno Haible <bruno@clisp.org>

	* elf32-i386.c: Don't defined ELF_ARCH etc. if this file is included
	by a target variant implementation.
	* elf64-alpha.c: Likewise.
	* elf32-i386-fbsd.c: New file.
	* elf64-alpha-fbsd.c: New file.
	* targets.c: Support bfd_elf32_i386_freebsd_vec and
	bfd_elf64_alpha_freebsd_vec.
	* configure.in: Accept the vectors bfd_elf32_i386_freebsd_vec,
	bfd_elf64_alpha_freebsd_vec.
	* Makefile.am (BFD32_BACKENDS): Add elf32-i386-fbsd.lo.
	(BFD32_BACKENDS_CFILES): Add elf32-i386-fbsd.c.
	(BFD64_BACKENDS): Add elf64-alpha-fbsd.lo.
	(BFD64_BACKENDS_CFILES): Add elf64-alpha-fbsd.c.
	(elf32-i386-fbsd.lo, elf64-alpha-fbsd.lo): Add dependencies.
	* config.bfd: For FreeBSD targets, set targ_defvec to a FreeBSD
	specific targets. Define OLD_FREEBSD_ABI_LABEL if appropriate.

	* config/tc-i386.h (ELF_TARGET_FORMAT): New macro.
	(TARGET_FORMAT): Use ELF_TARGET_FORMAT instead of "elf32-i386".
	* config/tc-i386.c (i386_target_format): Likewise.
	* config/tc-alpha.h (ELF_TARGET_FORMAT): New macro.
	(TARGET_FORMAT): Use ELF_TARGET_FORMAT instead of "elf64-alpha".

	* emulparams/elf_i386_fbsd.sh: Set OUTPUT_FORMAT to
	elf32-i386-freebsd.
	* emulparams/elf64alpha_fbsd.sh: Set OUTPUT_FORMAT to
	elf64-alpha-freebsd.

Approved by:  Alan Modra <amodra@bigpond.net.au>
              Message-ID: <20020715021113.GJ30362@bubble.sa.bigpond.net.au>

1 files changed, 57 insertions, 0 deletions

diff --git a/bfd/elf32-i386-fbsd.c b/bfd/elf32-i386-fbsd.c
new file mode 100644
index 0000000..9420829
--- /dev/null
+++ b/bfd/elf32-i386-fbsd.c
@@ -0,0 +1,57 @@
+/* Intel IA-32 specific support for 32-bit ELF on FreeBSD.
+   Copyright 2002 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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 of the License, 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 program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define TARGET_LITTLE_SYM		bfd_elf32_i386_freebsd_vec
+#define TARGET_LITTLE_NAME		"elf32-i386-freebsd"
+#define ELF_ARCH			bfd_arch_i386
+#define ELF_MACHINE_CODE		EM_386
+#define ELF_MAXPAGESIZE			0x1000
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "elf-bfd.h"
+
+/* The kernel recognizes executables as valid only if they carry a
+   "FreeBSD" label in the ELF header.  So we put this label on all
+   executables and (for simplicity) also all other object files.  */
+
+static void elf_i386_post_process_headers
+  PARAMS ((bfd *, struct bfd_link_info *));
+
+static void
+elf_i386_post_process_headers (abfd, link_info)
+     bfd * abfd;
+     struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
+{
+  Elf_Internal_Ehdr * i_ehdrp;	/* ELF file header, internal form.  */
+
+  i_ehdrp = elf_elfheader (abfd);
+
+#ifdef OLD_FREEBSD_ABI_LABEL
+  /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard.  */
+  memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
+#else
+  /* Put an ABI label supported by FreeBSD >= 4.1.  */
+  i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
+#endif
+}
+
+#define elf_backend_post_process_headers	elf_i386_post_process_headers
+
+#include "elf32-i386.c"