Extensive changes to move the bulk of the linker into BFD so that

	more efficient backend code can be written for specific object
	files.  Only existing efficient backend is a.out.
	* seclet.c, seclet.h: Removed.
	* hash.c, linker.c, genlink.h: New files.
	* bfd-in.h: Removed bfd_error_vector.  Declared hash table
	structures and functions.
	(JUMP_TABLE): Removed bfd_seclet_link, added
	bfd_link_hash_table_create, bfd_link_add_symbols and
	bfd_final_link.
	* All backends: Changed accordingly.
	* bfd-in2.h: Rebuilt.
	* bfd.c (struct _bfd): Added link_next and archive_pass fields.
	Removed ld_symbols field.
	(bfd_nonrepresentable_section, bfd_undefined_symbol,
	bfd_reloc_value_truncated, bfd_reloc_is_dangerous,
	bfd_error_vector): Removed.
	(bfd_default_error_trap, bfd_error_trap,
	bfd_error_nonrepresentabltrap): Removed.
	(bfd_get_relocated_section_contents): Pass link_info.  Pass
	link_order instead of seclet.  Pass symbols.
	(bfd_relax_section): Pass link_info.
	(bfd_seclet_link): Removed.
	(bfd_link_hash_table_create, bfd_link_add_symbols,
	bfd_final_link): New macros.
	* libbfd-in.h: If __GNUC__ is defined and alloca is not, define
	alloca as __builtin_alloca.  Declare internal linking functions.
	* libbfd.h: Rebuilt.
	* libbfd.c (bfd_seek): Comment out fseek assertion.  It's worked
	for months.
	* reloc.c (reloc_howto_type): Added error_message argument to
	special_function field.  Changed all callers and all definitions.
	(bfd_get_reloc_size): Make argument a const pointer.
	(bfd_perform_relocation): Add error_message argument to hold
	string set if return value if bfd_reloc_dangerous.  Changed all
	callers.
	(_bfd_final_link_relocate, _bfd_relocate_contents): New functions.
	* section.c (asection): Renamed seclets_head and seclets_tail to
	link_order_head and link_order_tail.
	* targets.c (bfd_target): Replaced seclet argument with link_info
	and link_order and symbols arguments in
	bfd_get_relocated_section_contents.  Added symbols argument to
	bfd_relax_section.  Removed bfd_seclet_link.  Added
	bfd_link_hash_table_create, bfd_link_add_symbols and
	bfd_final_link.
	* libaout.h (struct aoutdata): Added external_syms,
	external_sym_count, external_strings, sym_hashes fields.
	(obj_aout_external_syms, obj_aout_external_sym_count,
	obj_aout_external_strings, obj_aout_sym_hashes): New accessor
	macros.
	(WRITE_HEADERS): Only output symbols if outsymbols is not NULL.
	* aoutx.h: Wrote new back end linker routines.
	(translate_to_native_sym_flags): Return boolean value.  Don't use
	bfd_error_vector.
	(NAME(aout,write_syms)): Return boolean value.  Check return value
	of translate_to_native_sym_flags and bfd_write.
	* aout-target.h (final_link_callback): New function.
	(MY_bfd_final_link): New function.
	* aout-adobe.c (aout_adobe_write_object_contents): Check return
	value of aout_32_write_syms.
	* hp300hpux.c (MY(write_object_contents)): Likewise.
	* i386lynx.c (WRITE_HEADERS): Likewise.
	* libaout.h (WRITE_HEADERS): Likewise.
	* bout.c: Changed functions to use link_info->callbacks rather
	than bfd_error_vector, and link_orders rather than seclets.
	* coff-alpha.c: Likewise.
	* coff-h8300.c: Likewise.
	* coff-h8500.c: Likewise.
	* coff-sh.c: Likewise.
	* coff-z8k.c: Likewise.
	* elf32-hppa.c: Likewise.
	* reloc16.c: Likewise.
	* coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Look
	up _gp in the hash table rather than in outsymbols.
	* coff-a29k.c (a29k_reloc): Pass errors back in new error_message
	argument rather than printing them.
	* coffcode.h (bfd_coff_reloc16_extra_cases): Take link_info and
	link_order arguments rather than seclet.  Changed all uses and
	definitions.
	(bfd_coff_reloc16_estimate): Pass link_info arguments.  Changed
	all uses and definitions.
	* libcoff.h: Rebuilt.
	* ecoff.c (ecoff_get_extr): If symbol is defined by linker, but
	not by ECOFF, make it scAbs.
	(ecoff_bfd_final_link): Renamed from ecoff_bfd_seclet_link and
	rewritten.
	* elf32-mips.c (mips_elf_final_link): Renamed from
	mips_elf_seclet_link and rewritten.
	* elf32-hppa.c (elf32_hppa_stub_description): Added link_info
	field.
	(new_stub, add_stub_by_name, hppa_elf_build_arg_reloc_stub,
	hppa_elf_build_long_branch_stub, hppa_look_for_stubs_in_section):
	Added link_info arguments.  Changed all callers.
	* elfcode.h (elf_slurp_symbol_table): Don't quit if outsymbols is
	not NULL.
	* oasys.c (oasys_write_sections): Return boolean value rather than
	using bfd_error_vector.
	(oasys_write_object_contents): Check return value of
	oasys_write_sections.
	* hosts/std-host.h: Don't declare qsort or strtol.
	* Makefile.in: Rebuild dependencies.
	(BFD_LIBS): Removed seclet.o.  Added hash.o and linker.o.
	(CFILES): Removed seclet.c.  Added hash.c and linker.c.
	(HFILES): Removed seclet.h.  Added genlink.h.

1 files changed, 298 insertions, 0 deletions

diff --git a/bfd/osf-core.c b/bfd/osf-core.c
new file mode 100644
index 0000000..c8c988c
--- /dev/null
+++ b/bfd/osf-core.c
@@ -0,0 +1,298 @@
+/* BFD back-end for OSF/1 core files.
+   Copyright 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* This file can only be compiled on systems which use OSF/1 style
+   core files.  In the config/XXXXXX.mh file for such a system add
+      HDEFINES=-DOSF_CORE
+      HDEPFILES=osf-core.o
+   */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/user.h>
+#include <sys/core.h>
+
+/* forward declarations */
+
+static asection *
+make_bfd_asection PARAMS ((bfd *, CONST char *, flagword, bfd_size_type,
+			   bfd_vma, file_ptr));
+static asymbol *
+osf_core_make_empty_symbol PARAMS ((bfd *));
+static bfd_target *
+osf_core_core_file_p PARAMS ((bfd *));
+static char *
+osf_core_core_file_failing_command PARAMS ((bfd *));
+static int
+osf_core_core_file_failing_signal PARAMS ((bfd *));
+static boolean
+osf_core_core_file_matches_executable_p PARAMS ((bfd *, bfd *));
+static void
+swap_abort PARAMS ((void));
+
+/* These are stored in the bfd's tdata */
+
+struct osf_core_struct 
+{
+  int sig;
+  char cmd[MAXCOMLEN + 1];
+};
+
+#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
+#define core_signal(bfd) (core_hdr(bfd)->sig)
+#define core_command(bfd) (core_hdr(bfd)->cmd)
+
+static asection *
+make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
+     bfd *abfd;
+     CONST char *name;
+     flagword flags;
+     bfd_size_type _raw_size;
+     bfd_vma vma;
+     file_ptr filepos;
+{
+  asection *asect;
+
+  asect = bfd_make_section (abfd, name);
+  if (!asect)
+    return NULL;
+
+  asect->flags = flags;
+  asect->_raw_size = _raw_size;
+  asect->vma = vma;
+  asect->filepos = filepos;
+  asect->alignment_power = 8;
+
+  return asect;
+}
+
+static asymbol *
+osf_core_make_empty_symbol (abfd)
+     bfd *abfd;
+{
+  asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+  new->the_bfd = abfd;
+  return new;
+}
+
+static bfd_target *
+osf_core_core_file_p (abfd)
+     bfd *abfd;
+{
+  int val;
+  int i;
+  char *secname;
+  struct core_filehdr core_header;
+  int dseccnt = 0;
+
+  val = bfd_read ((PTR)&core_header, 1, sizeof core_header, abfd);
+  if (val != sizeof core_header)
+    return NULL;
+
+  if (strncmp (core_header.magic, "Core", 4) != 0)
+    return NULL;
+
+  core_hdr (abfd) = (struct osf_core_struct *)
+    bfd_zalloc (abfd, sizeof (struct osf_core_struct));
+  if (!core_hdr (abfd))
+    return NULL;
+
+  strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
+  core_signal (abfd) = core_header.signo;
+
+  for (i = 0; i < core_header.nscns; i++)
+    {
+      struct core_scnhdr core_scnhdr;
+
+      val = bfd_read ((PTR)&core_scnhdr, 1, sizeof core_scnhdr, abfd);
+      if (val != sizeof core_scnhdr)
+	break;
+
+      /* Skip empty sections.  */
+      if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)
+	continue;
+
+      switch (core_scnhdr.scntype)
+	{
+	case SCNRGN:
+	  /* OSF/1 has multiple data sections (data, bss and data/bss sections
+	     for shared libraries), but bfd doesn't permit data sections with
+	     the same name. Construct a unique section name.  */
+	  secname = bfd_alloc (abfd, 40);
+	  sprintf (secname, ".data%d", dseccnt++);
+	  break;
+	case SCNSTACK:
+	  secname = ".stack";
+	  break;
+	case SCNREGS:
+	  secname = ".reg";
+	  break;
+	default:
+	  fprintf (stderr, "Unhandled OSF/1 core file section type %d\n",
+		   core_scnhdr.scntype);
+	  continue;
+	}
+
+      if (!make_bfd_asection (abfd, secname,
+			      SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
+			      (bfd_size_type) core_scnhdr.size,
+			      (bfd_vma) core_scnhdr.vaddr,
+			      (file_ptr) core_scnhdr.scnptr))
+	return NULL;
+    }
+
+  /* OK, we believe you.  You're a core file (sure, sure).  */
+
+  return abfd->xvec;
+}
+
+static char *
+osf_core_core_file_failing_command (abfd)
+     bfd *abfd;
+{
+  return core_command (abfd);
+}
+
+/* ARGSUSED */
+static int
+osf_core_core_file_failing_signal (abfd)
+     bfd *abfd;
+{
+  return core_signal (abfd);
+}
+
+/* ARGSUSED */
+static boolean
+osf_core_core_file_matches_executable_p (core_bfd, exec_bfd)
+     bfd *core_bfd, *exec_bfd;
+{
+  return true;		/* FIXME, We have no way of telling at this point */
+}
+
+/* No archive file support via this BFD */
+#define	osf_core_openr_next_archived_file	bfd_generic_openr_next_archived_file
+#define	osf_core_generic_stat_arch_elt		bfd_generic_stat_arch_elt
+#define	osf_core_slurp_armap			bfd_false
+#define	osf_core_slurp_extended_name_table	bfd_true
+#define	osf_core_write_armap			(boolean (*) PARAMS	\
+    ((bfd *arch, unsigned int elength, struct orl *map, \
+      unsigned int orl_count, int stridx))) bfd_false
+#define	osf_core_truncate_arname		bfd_dont_truncate_arname
+
+#define	osf_core_close_and_cleanup		bfd_generic_close_and_cleanup
+#define	osf_core_set_section_contents		(boolean (*) PARAMS	\
+        ((bfd *abfd, asection *section, PTR data, file_ptr offset,	\
+        bfd_size_type count))) bfd_false
+#define	osf_core_get_section_contents		bfd_generic_get_section_contents
+#define	osf_core_new_section_hook		(boolean (*) PARAMS	\
+	((bfd *, sec_ptr))) bfd_true
+#define	osf_core_get_symtab_upper_bound	bfd_0u
+#define	osf_core_get_symtab			(unsigned int (*) PARAMS \
+        ((bfd *, struct symbol_cache_entry **))) bfd_0u
+#define	osf_core_get_reloc_upper_bound		(unsigned int (*) PARAMS \
+	((bfd *, sec_ptr))) bfd_0u
+#define	osf_core_canonicalize_reloc		(unsigned int (*) PARAMS \
+	((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
+#define	osf_core_print_symbol			(void (*) PARAMS	\
+	((bfd *, PTR, struct symbol_cache_entry  *,			\
+	bfd_print_symbol_type))) bfd_false
+#define	osf_core_get_symbol_info		(void (*) PARAMS	\
+	((bfd *, struct symbol_cache_entry  *,			\
+	symbol_info *))) bfd_false
+#define	osf_core_get_lineno			(alent * (*) PARAMS	\
+	((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
+#define	osf_core_set_arch_mach			(boolean (*) PARAMS	\
+	((bfd *, enum bfd_architecture, unsigned long))) bfd_false
+#define	osf_core_find_nearest_line		(boolean (*) PARAMS	\
+        ((bfd *abfd, struct sec  *section,				\
+         struct symbol_cache_entry  **symbols,bfd_vma offset,		\
+         CONST char **file, CONST char **func, unsigned int *line))) bfd_false
+#define	osf_core_sizeof_headers		(int (*) PARAMS	\
+	((bfd *, boolean))) bfd_0
+
+#define osf_core_bfd_debug_info_start		bfd_void
+#define osf_core_bfd_debug_info_end		bfd_void
+#define osf_core_bfd_debug_info_accumulate	(void (*) PARAMS	\
+	((bfd *, struct sec *))) bfd_void
+#define osf_core_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
+#define osf_core_bfd_relax_section		bfd_generic_relax_section
+#define osf_core_bfd_reloc_type_lookup \
+  ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
+#define osf_core_bfd_make_debug_symbol \
+  ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+#define osf_core_bfd_link_hash_table_create \
+  ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
+#define osf_core_bfd_link_add_symbols \
+  ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+#define osf_core_bfd_final_link \
+  ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+
+/* If somebody calls any byte-swapping routines, shoot them.  */
+static void
+swap_abort()
+{
+  abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+}
+#define	NO_GET	((bfd_vma (*) PARAMS ((         bfd_byte *))) swap_abort )
+#define	NO_PUT	((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
+#define	NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort )
+
+bfd_target osf_core_vec =
+  {
+    "osf-core",
+    bfd_target_unknown_flavour,
+    true,			/* target byte order */
+    true,			/* target headers byte order */
+    (HAS_RELOC | EXEC_P |	/* object flags */
+     HAS_LINENO | HAS_DEBUG |
+     HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+    0,			                                   /* symbol prefix */
+    ' ',						   /* ar_pad_char */
+    16,							   /* ar_max_namelen */
+    3,							   /* minimum alignment power */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 16 bit data */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 64 bit hdrs */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 32 bit hdrs */
+    NO_GET, NO_SIGNED_GET, NO_PUT,	/* 16 bit hdrs */
+
+    {				/* bfd_check_format */
+     _bfd_dummy_target,		/* unknown format */
+     _bfd_dummy_target,		/* object file */
+     _bfd_dummy_target,		/* archive */
+     osf_core_core_file_p	/* a core file */
+    },
+    {				/* bfd_set_format */
+     bfd_false, bfd_false,
+     bfd_false, bfd_false
+    },
+    {				/* bfd_write_contents */
+     bfd_false, bfd_false,
+     bfd_false, bfd_false
+    },
+    
+    JUMP_TABLE(osf_core),
+    (PTR) 0			/* backend_data */
+};