#include "aout/stab_gnu.h"
#include "aout/ar.h"
+static boolean translate_symbol_table PARAMS ((bfd *, aout_symbol_type *,
+ struct external_nlist *,
+ bfd_size_type, char *,
+ bfd_size_type,
+ boolean dynamic));
+
/*
SUBSECTION
Relocations
obj_datasec (abfd)->_raw_size = execp->a_data;
obj_bsssec (abfd)->_raw_size = execp->a_bss;
- obj_textsec (abfd)->flags = (execp->a_trsize != 0 ?
- (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) :
- (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
- obj_datasec (abfd)->flags = (execp->a_drsize != 0 ?
- (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) :
- (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
+ /* If this object is dynamically linked, we assume that both
+ sections have relocs. This does no real harm, even though it may
+ not be true. */
+ obj_textsec (abfd)->flags =
+ (execp->a_trsize != 0 || (abfd->flags & DYNAMIC) != 0
+ ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
+ : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
+ obj_datasec (abfd)->flags =
+ (execp->a_drsize != 0 || (abfd->flags & DYNAMIC) != 0
+ ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
+ : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
obj_bsssec (abfd)->flags = SEC_ALLOC;
#ifdef THIS_IS_ONLY_DOCUMENTATION
{
cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
}
- else
+ else if (! sym_is_undefined (cache_ptr))
{
cache_ptr->symbol.flags = BSF_LOCAL;
}
\f
/* Native-level interface to symbols. */
-/* We read the symbols into a buffer, which is discarded when this
-function exits. We read the strings into a buffer large enough to
-hold them all plus all the cached symbol entries. */
asymbol *
DEFUN(NAME(aout,make_empty_symbol),(abfd),
return &new->symbol;
}
+/* Translate a set of internal symbols into external symbols. */
+
+static boolean
+translate_symbol_table (abfd, in, ext, count, str, strsize, dynamic)
+ bfd *abfd;
+ aout_symbol_type *in;
+ struct external_nlist *ext;
+ bfd_size_type count;
+ char *str;
+ bfd_size_type strsize;
+ boolean dynamic;
+{
+ struct external_nlist *ext_end;
+
+ ext_end = ext + count;
+ for (; ext < ext_end; ext++, in++)
+ {
+ bfd_vma x;
+
+ x = GET_WORD (abfd, ext->e_strx);
+ in->symbol.the_bfd = abfd;
+ if (x < strsize)
+ in->symbol.name = str + x;
+ else
+ return false;
+
+ in->symbol.value = GET_SWORD (abfd, ext->e_value);
+ in->desc = bfd_h_get_16 (abfd, ext->e_desc);
+ in->other = bfd_h_get_8 (abfd, ext->e_other);
+ in->type = bfd_h_get_8 (abfd, ext->e_type);
+ in->symbol.udata = 0;
+
+ translate_from_native_sym_flags (ext, in, abfd);
+
+ if (dynamic)
+ in->symbol.flags |= BSF_DYNAMIC;
+ }
+
+ return true;
+}
+
+/* We read the symbols into a buffer, which is discarded when this
+ function exits. We read the strings into a buffer large enough to
+ hold them all plus all the cached symbol entries. */
+
boolean
DEFUN(NAME(aout,slurp_symbol_table),(abfd),
bfd *abfd)
struct external_nlist *syms;
char *strings;
aout_symbol_type *cached;
+ bfd_size_type dynsym_count = 0;
+ struct external_nlist *dynsyms = NULL;
+ char *dynstrs = NULL;
+ bfd_size_type dynstr_size;
/* If there's no work to be done, don't do any */
if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true;
return false;
string_size = GET_WORD (abfd, string_chars);
- strings =(char *) bfd_alloc(abfd, string_size + 1);
- cached = (aout_symbol_type *)
- bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type)));
+ /* If this is a dynamic object, see if we can get the dynamic symbol
+ table. */
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) != 0
+ && aout_backend_info (abfd)->read_dynamic_symbols)
+ {
+ dynsym_count = ((*aout_backend_info (abfd)->read_dynamic_symbols)
+ (abfd, &dynsyms, &dynstrs, &dynstr_size));
+ if (dynsym_count == (bfd_size_type) -1)
+ return false;
+ }
- /* malloc this, so we can free it if simply. The symbol caching
- might want to allocate onto the bfd's obstack */
+ strings = (char *) bfd_alloc (abfd, string_size + 1);
+ cached = ((aout_symbol_type *)
+ bfd_zalloc (abfd,
+ ((bfd_get_symcount (abfd) + dynsym_count)
+ * sizeof (aout_symbol_type))));
+
+ /* Don't allocate on the obstack, so we can free it easily. */
syms = (struct external_nlist *) bfd_xmalloc(symbol_size);
bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET);
if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size)
strings[string_size] = 0; /* Just in case. */
/* OK, now walk the new symtable, cacheing symbol properties */
- {
- register struct external_nlist *sym_pointer;
- register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd);
- register aout_symbol_type *cache_ptr = cached;
+ if (! translate_symbol_table (abfd, cached, syms, bfd_get_symcount (abfd),
+ strings, string_size, false))
+ goto bailout;
+ if (dynsym_count > 0)
+ {
+ if (! translate_symbol_table (abfd, cached + bfd_get_symcount (abfd),
+ dynsyms, dynsym_count, dynstrs,
+ dynstr_size, true))
+ goto bailout;
- /* Run through table and copy values */
- for (sym_pointer = syms, cache_ptr = cached;
- sym_pointer < sym_end; sym_pointer ++, cache_ptr++)
- {
- long x = GET_WORD(abfd, sym_pointer->e_strx);
- cache_ptr->symbol.the_bfd = abfd;
- if (x == 0)
- cache_ptr->symbol.name = "";
- else if (x >= 0 && x < string_size)
- cache_ptr->symbol.name = x + strings;
- else
- goto bailout;
-
- cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value);
- cache_ptr->desc = bfd_h_get_16(abfd, sym_pointer->e_desc);
- cache_ptr->other = bfd_h_get_8(abfd, sym_pointer->e_other);
- cache_ptr->type = bfd_h_get_8(abfd, sym_pointer->e_type);
- cache_ptr->symbol.udata = 0;
- translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd);
- }
- }
+ bfd_get_symcount (abfd) += dynsym_count;
+ }
obj_aout_symbols (abfd) = cached;
free((PTR)syms);
unsigned int count;
bfd_size_type reloc_size;
PTR relocs;
+ bfd_size_type dynrel_count = 0;
+ PTR dynrels = NULL;
arelent *reloc_cache;
size_t each_size;
+ unsigned int counter = 0;
+ arelent *cache_ptr;
if (asect->relocation) return true;
if (asect->flags & SEC_CONSTRUCTOR) return true;
- if (asect == obj_datasec (abfd)) {
+ if (asect == obj_datasec (abfd))
reloc_size = exec_hdr(abfd)->a_drsize;
- } else if (asect == obj_textsec (abfd)) {
+ else if (asect == obj_textsec (abfd))
reloc_size = exec_hdr(abfd)->a_trsize;
- } else {
- bfd_error = invalid_operation;
- return false;
- }
+ else
+ {
+ bfd_error = invalid_operation;
+ return false;
+ }
+
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) != 0
+ && aout_backend_info (abfd)->read_dynamic_relocs)
+ {
+ dynrel_count = ((*aout_backend_info (abfd)->read_dynamic_relocs)
+ (abfd, &dynrels));
+ if (dynrel_count == (bfd_size_type) -1)
+ return false;
+ }
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
each_size = obj_reloc_entry_size (abfd);
count = reloc_size / each_size;
-
- reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof
- (arelent)));
- if (!reloc_cache) {
-nomem:
- bfd_error = no_memory;
- return false;
- }
+ reloc_cache = ((arelent *)
+ bfd_zalloc (abfd,
+ (size_t) ((count + dynrel_count)
+ * sizeof (arelent))));
+ if (!reloc_cache)
+ {
+ nomem:
+ bfd_error = no_memory;
+ return false;
+ }
relocs = (PTR) bfd_alloc (abfd, reloc_size);
- if (!relocs) {
- bfd_release (abfd, reloc_cache);
- goto nomem;
- }
+ if (!relocs)
+ {
+ bfd_release (abfd, reloc_cache);
+ goto nomem;
+ }
- if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) {
- bfd_release (abfd, relocs);
- bfd_release (abfd, reloc_cache);
- bfd_error = system_call_error;
- return false;
- }
+ if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
+ {
+ bfd_release (abfd, relocs);
+ bfd_release (abfd, reloc_cache);
+ bfd_error = system_call_error;
+ return false;
+ }
- if (each_size == RELOC_EXT_SIZE) {
- register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
- unsigned int counter = 0;
- arelent *cache_ptr = reloc_cache;
+ cache_ptr = reloc_cache;
+ if (each_size == RELOC_EXT_SIZE)
+ {
+ register struct reloc_ext_external *rptr =
+ (struct reloc_ext_external *) relocs;
- for (; counter < count; counter++, rptr++, cache_ptr++) {
- NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols);
+ for (; counter < count; counter++, rptr++, cache_ptr++)
+ NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols);
}
- } else {
- register struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
- unsigned int counter = 0;
- arelent *cache_ptr = reloc_cache;
+ else
+ {
+ register struct reloc_std_external *rptr
+ = (struct reloc_std_external *) relocs;
- for (; counter < count; counter++, rptr++, cache_ptr++) {
- NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols);
+ for (; counter < count; counter++, rptr++, cache_ptr++)
+ NAME(aout,swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols);
}
- }
+ if (dynrel_count > 0)
+ {
+ asymbol **dynsyms;
+
+ /* The dynamic symbols are at the end of the symbol table. */
+ for (dynsyms = symbols;
+ *dynsyms != NULL && ((*dynsyms)->flags & BSF_DYNAMIC) == 0;
+ ++dynsyms)
+ ;
+
+ /* Swap in the dynamic relocs. These relocs may be for either
+ section, so we must discard ones we don't want. */
+ counter = 0;
+ if (each_size == RELOC_EXT_SIZE)
+ {
+ register struct reloc_ext_external *rptr
+ = (struct reloc_ext_external *) dynrels;
+
+ for (; counter < dynrel_count; counter++, rptr++, cache_ptr++)
+ {
+ NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, dynsyms);
+ cache_ptr->address -= bfd_get_section_vma (abfd, asect);
+ if (cache_ptr->address >= bfd_section_size (abfd, asect))
+ --cache_ptr;
+ }
+ }
+ else
+ {
+ register struct reloc_std_external *rptr
+ = (struct reloc_std_external *) dynrels;
+
+ for (; counter < dynrel_count; counter++, rptr++, cache_ptr++)
+ {
+ NAME(aout,swap_std_reloc_in) (abfd, rptr, cache_ptr, dynsyms);
+ cache_ptr->address -= bfd_get_section_vma (abfd, asect);
+ if (cache_ptr->address >= bfd_section_size (abfd, asect))
+ --cache_ptr;
+ }
+ }
+ }
bfd_release (abfd,relocs);
asect->relocation = reloc_cache;
- asect->reloc_count = count;
+ asect->reloc_count = cache_ptr - reloc_cache;
return true;
}
bfd *abfd AND
sec_ptr asect)
{
+ bfd_size_type dynrel_count = 0;
+
if (bfd_get_format (abfd) != bfd_object) {
bfd_error = invalid_operation;
return 0;
return (sizeof (arelent *) * (asect->reloc_count+1));
}
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) != 0
+ && aout_backend_info (abfd)->read_dynamic_relocs)
+ {
+ PTR dynrels;
+
+ dynrel_count = ((*aout_backend_info (abfd)->read_dynamic_relocs)
+ (abfd, &dynrels));
+ if (dynrel_count == (bfd_size_type) -1)
+ return 0;
+ }
if (asect == obj_datasec (abfd))
return (sizeof (arelent *) *
- ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
- +1));
+ ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
+ + dynrel_count + 1));
if (asect == obj_textsec (abfd))
return (sizeof (arelent *) *
- ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
- +1));
+ ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
+ + dynrel_count + 1));
bfd_error = invalid_operation;
return 0;
-/* BFD backend for sunos binaries */
+/* BFD backend for SunOS binaries.
+ Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Written by Cygnus Support.
-/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+This file is part of BFD, the Binary File Descriptor library.
-This file is part of BFD, the Binary File Diddler.
-
-BFD is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-BFD is distributed in the hope that it will be useful,
+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 BFD; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* $Id$ */
+#define ARCH 32
+#define TARGETNAME "a.out-sunos-big"
+#define MY(OP) CAT(sunos_big_,OP)
-#include <ansidecl.h>
-#include "sysdep.h"
#include "bfd.h"
-#include "libbfd.h"
-
-#include "a.out.sun4.h"
-#include "a.out.gnu.h"
-#include "stab.gnu.h"
-#include "ar.h"
-#include "liba.out.h" /* BFD a.out internal data structures */
-
-void (*bfd_error_trap)();
-
-static bfd_target *sunos4_callback ();
-/*SUPPRESS558*/
-/*SUPPRESS529*/
+/* Static routines defined in this file. */
-bfd_target *
-sunos4_object_p (abfd)
- bfd *abfd;
-{
- unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
- unsigned long magic; /* Swapped magic number */
+struct external_nlist;
- bfd_error = system_call_error;
+static boolean sunos_read_dynamic_info PARAMS ((bfd *));
+static bfd_size_type MY(read_dynamic_symbols)
+ PARAMS ((bfd *, struct external_nlist **, char **, bfd_size_type *));
+static bfd_size_type MY(read_dynamic_relocs) PARAMS ((bfd *, PTR *));
- if (bfd_read ((PTR)magicbuf, 1, sizeof (magicbuf), abfd) !=
- sizeof (magicbuf))
- return 0;
- magic = bfd_h_getlong (abfd, magicbuf);
+#define MY_read_dynamic_symbols MY(read_dynamic_symbols)
+#define MY_read_dynamic_relocs MY(read_dynamic_relocs)
- if (N_BADMAG (*((struct exec *) &magic))) return 0;
+/* Include the usual a.out support. */
+#include "aoutf1.h"
- return some_aout_object_p (abfd, sunos4_callback);
-}
+/* SunOS shared library support. We store a pointer to this structure
+ in obj_aout_dynamic_info (abfd). */
- /* Determine the size of a relocation entry, based on the architecture */
-static void
-DEFUN(choose_reloc_size,(abfd),
-bfd *abfd)
- {
- switch (abfd->obj_arch) {
- case bfd_arch_sparc:
- case bfd_arch_a29k:
- obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
- break;
- default:
- obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
- break;
- }
- }
-
-/* Set parameters about this a.out file that are machine-dependent.
- This routine is called from some_aout_object_p just before it returns. */
-
-static bfd_target *
-sunos4_callback (abfd)
- bfd *abfd;
+struct sunos_dynamic_info
{
- struct exec *execp = exec_hdr (abfd);
-
- /* The virtual memory addresses of the sections */
- obj_datasec (abfd)->vma = N_DATADDR(*execp);
- obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
- obj_textsec (abfd)->vma = N_TXTADDR(*execp);
-
- /* The file offsets of the sections */
- obj_textsec (abfd)->filepos = EXEC_BYTES_SIZE; /*N_TXTOFF(*execp);*/
- obj_datasec (abfd)->filepos = N_DATOFF(*execp);
-
- /* The file offsets of the relocation info */
- obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
- obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
-
- /* The file offsets of the string table and symbol table. */
- obj_str_filepos (abfd) = N_STROFF (*execp);
- obj_sym_filepos (abfd) = N_SYMOFF (*execp);
-
-
-
- /* Determine the architecture and machine type of the object file. */
- switch (N_MACHTYPE (*exec_hdr (abfd))) {
-
- case M_UNKNOWN:
- abfd->obj_arch = bfd_arch_unknown;
- abfd->obj_machine = 0;
- break;
-
- case M_68010:
- abfd->obj_arch = bfd_arch_m68k;
- abfd->obj_machine = 68010;
- break;
-
- case M_68020:
- abfd->obj_arch = bfd_arch_m68k;
- abfd->obj_machine = 68020;
- break;
-
- case M_SPARC:
- abfd->obj_arch = bfd_arch_sparc;
- abfd->obj_machine = 0;
- break;
-
- case M_386:
- abfd->obj_arch = bfd_arch_i386;
- abfd->obj_machine = 0;
- break;
-
- case M_29K:
- abfd->obj_arch = bfd_arch_a29k;
- abfd->obj_machine = 0;
- break;
-
- default:
- abfd->obj_arch = bfd_arch_obscure;
- abfd->obj_machine = 0;
- break;
- }
-
- choose_reloc_size(abfd);
- return abfd->xvec;
-}
+ /* Whether we found any dynamic information. */
+ boolean valid;
+ /* Dynamic information. */
+ struct internal_sun4_dynamic_link dyninfo;
+ /* Number of dynamic symbols. */
+ bfd_size_type dynsym_count;
+ /* Read in nlists for dynamic symbols. */
+ struct external_nlist *dynsym;
+ /* Read in dynamic string table. */
+ char *dynstr;
+ /* Number of dynamic relocs. */
+ bfd_size_type dynrel_count;
+ /* Read in dynamic relocs. This may be reloc_std_external or
+ reloc_ext_external. */
+ PTR dynrel;
+};
+/* Read in the basic dynamic information. This locates the __DYNAMIC
+ structure and uses it to find the dynamic_link structure. It
+ creates and saves a sunos_dynamic_info structure. If it can't find
+ __DYNAMIC, it sets the valid field of the sunos_dynamic_info
+ structure to false to avoid doing this work again. */
-boolean
-sunos4_mkobject (abfd)
+static boolean
+sunos_read_dynamic_info (abfd)
bfd *abfd;
{
- char *rawptr;
-
- bfd_error = system_call_error;
-
- /* Use an intermediate variable for clarity */
- rawptr = bfd_zalloc (abfd, sizeof (struct aoutdata) + sizeof (struct exec));
-
- if (rawptr == NULL) {
- bfd_error = no_memory;
- return false;
- }
-
- set_tdata (abfd, (struct aoutdata *) rawptr);
- exec_hdr (abfd) = (struct exec *) (rawptr + sizeof (struct aoutdata));
-
- /* For simplicity's sake we just make all the sections right here. */
-
- obj_textsec (abfd) = (asection *)NULL;
- obj_datasec (abfd) = (asection *)NULL;
- obj_bsssec (abfd) = (asection *)NULL;
- bfd_make_section (abfd, ".text");
- bfd_make_section (abfd, ".data");
- bfd_make_section (abfd, ".bss");
+ struct sunos_dynamic_info *info;
+ struct external_nlist dynsym;
+ char buf[sizeof "__DYNAMIC"];
+ asection *dynsec;
+ file_ptr dynoff;
+ struct external_sun4_dynamic dyninfo;
+ unsigned long dynver;
+ struct external_sun4_dynamic_link linkinfo;
+
+ if (obj_aout_dynamic_info (abfd) != (PTR) NULL)
+ return true;
+
+ info = ((struct sunos_dynamic_info *)
+ bfd_zalloc (abfd, sizeof (struct sunos_dynamic_info)));
+ info->valid = false;
+ info->dynsym = NULL;
+ info->dynstr = NULL;
+ info->dynrel = NULL;
+ obj_aout_dynamic_info (abfd) = (PTR) info;
+
+ /* We look for the __DYNAMIC symbol to locate the dynamic linking
+ information. It should be the first symbol if it is defined. If
+ we can't find it, don't sweat it. */
+ if ((abfd->flags & DYNAMIC) == 0
+ || bfd_get_symcount (abfd) <= 0
+ || bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
+ || (bfd_read ((PTR) &dynsym, 1, EXTERNAL_NLIST_SIZE, abfd)
+ != EXTERNAL_NLIST_SIZE)
+ || ((dynsym.e_type[0] & N_TYPE) != N_DATA
+ && (dynsym.e_type[0] & N_TYPE) != N_TEXT)
+ || bfd_seek (abfd,
+ obj_str_filepos (abfd) + GET_WORD (abfd, dynsym.e_strx),
+ SEEK_SET) != 0
+ || bfd_read ((PTR) buf, 1, sizeof buf, abfd) != sizeof buf
+ || buf[sizeof buf - 1] != '\0'
+ || strcmp (buf, "__DYNAMIC") != 0)
+ return true;
+
+ if ((dynsym.e_type[0] & N_TYPE) == N_DATA)
+ dynsec = obj_datasec (abfd);
+ else
+ dynsec = obj_textsec (abfd);
+ if (! bfd_get_section_contents (abfd, dynsec, (PTR) &dyninfo,
+ (GET_WORD (abfd, dynsym.e_value)
+ - bfd_get_section_vma (abfd, dynsec)),
+ sizeof dyninfo))
+ return true;
+
+ dynver = GET_WORD (abfd, dyninfo.ld_version);
+ if (dynver != 2 && dynver != 3)
+ return true;
+
+ dynoff = GET_WORD (abfd, dyninfo.ld);
+
+ /* dynoff is a virtual address. It is probably always in the .data
+ section, but this code should work even if it moves. */
+ if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
+ dynsec = obj_textsec (abfd);
+ else
+ dynsec = obj_datasec (abfd);
+ dynoff -= bfd_get_section_vma (abfd, dynsec);
+ if (dynoff < 0 || dynoff > bfd_section_size (abfd, dynsec))
+ return true;
+
+ /* This executable appears to be dynamically linked in a way that we
+ can understand. */
+ if (! bfd_get_section_contents (abfd, dynsec, (PTR) &linkinfo, dynoff,
+ (bfd_size_type) sizeof linkinfo))
+ return true;
+
+ /* Swap in the dynamic link information. */
+ info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
+ info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
+ info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
+ info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
+ info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
+ info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
+ info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
+ info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
+ info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
+ info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
+ info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
+ info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
+ info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
+ info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
+
+ /* The only way to get the size of the symbol information appears to
+ be to determine the distance between it and the string table. */
+ info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
+ / EXTERNAL_NLIST_SIZE);
+ BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
+ == info->dyninfo.ld_symbols - info->dyninfo.ld_stab);
+
+ /* Similarly, the relocs end at the hash table. */
+ info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
+ / obj_reloc_entry_size (abfd));
+ BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
+ == info->dyninfo.ld_hash - info->dyninfo.ld_rel);
+
+ info->valid = true;
return true;
}
-/* Keep track of machine architecture and machine type for a.out's.
- Return the machine_type for a particular arch&machine, or M_UNKNOWN
- if that exact arch&machine can't be represented in a.out format.
-
- If the architecture is understood, machine type 0 (default) should
- always be understood. */
-
-static enum machine_type
-aout_machine_type (arch, machine)
- enum bfd_architecture arch;
- unsigned long machine;
-{
- enum machine_type arch_flags;
-
- arch_flags = M_UNKNOWN;
-
- switch (arch) {
- case bfd_arch_sparc:
- if (machine == 0) arch_flags = M_SPARC;
- break;
-
- case bfd_arch_m68k:
- switch (machine) {
- case 0: arch_flags = M_68010; break;
- case 68000: arch_flags = M_UNKNOWN; break;
- case 68010: arch_flags = M_68010; break;
- case 68020: arch_flags = M_68020; break;
- default: arch_flags = M_UNKNOWN; break;
- }
- break;
-
- case bfd_arch_i386:
- if (machine == 0) arch_flags = M_386;
- break;
-
- case bfd_arch_a29k:
- if (machine == 0) arch_flags = M_29K;
- break;
-
- default:
- arch_flags = M_UNKNOWN;
- break;
- }
- return arch_flags;
-}
-
-/* Write an object file in SunOS format.
- Section contents have already been written. We write the
- file header, symbols, and relocation. */
+/* Read in the dynamic symbols. */
-boolean
-sunos4_write_object_contents (abfd)
+static bfd_size_type
+MY(read_dynamic_symbols) (abfd, syms, strs, strsize)
bfd *abfd;
+ struct external_nlist **syms;
+ char **strs;
+ bfd_size_type *strsize;
{
- size_t data_pad = 0;
- unsigned char exec_bytes[EXEC_BYTES_SIZE];
- struct exec *execp = exec_hdr (abfd);
+ struct sunos_dynamic_info *info;
-
-
- execp->a_text = obj_textsec (abfd)->size;
-
- /* Magic number, maestro, please! */
- switch (bfd_get_architecture(abfd)) {
- case bfd_arch_m68k:
- switch (bfd_get_machine(abfd)) {
- case 68010:
- N_SET_MACHTYPE(*execp, M_68010);
- break;
- default:
- case 68020:
- N_SET_MACHTYPE(*execp, M_68020);
- break;
+ if (obj_aout_dynamic_info (abfd) == (PTR) NULL)
+ {
+ if (! sunos_read_dynamic_info (abfd))
+ return (bfd_size_type) -1;
}
- break;
- case bfd_arch_sparc:
- N_SET_MACHTYPE(*execp, M_SPARC);
- break;
- case bfd_arch_i386:
- N_SET_MACHTYPE(*execp, M_386);
- break;
- case bfd_arch_a29k:
- N_SET_MACHTYPE(*execp, M_29K);
- break;
- default:
- N_SET_MACHTYPE(*execp, M_UNKNOWN);
- }
- choose_reloc_size(abfd);
+ info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
+ if (! info->valid || info->dynsym_count == 0)
+ return 0;
- N_SET_MAGIC (*execp, OMAGIC);
- if (abfd->flags & D_PAGED) {
- /* This is not strictly true, but will probably do for the default
- case. FIXME.
- */
+ if (info->dynsym == (struct external_nlist *) NULL)
+ {
+ info->dynsym = ((struct external_nlist *)
+ bfd_alloc (abfd,
+ (info->dynsym_count
+ * EXTERNAL_NLIST_SIZE)));
+ info->dynstr = (char *) bfd_alloc (abfd, info->dyninfo.ld_symb_size);
+ if (bfd_seek (abfd, info->dyninfo.ld_stab, SEEK_SET) != 0
+ || (bfd_read ((PTR) info->dynsym, info->dynsym_count,
+ EXTERNAL_NLIST_SIZE, abfd)
+ != info->dynsym_count * EXTERNAL_NLIST_SIZE)
+ || bfd_seek (abfd, info->dyninfo.ld_symbols, SEEK_SET) != 0
+ || (bfd_read ((PTR) info->dynstr, 1, info->dyninfo.ld_symb_size,
+ abfd)
+ != info->dyninfo.ld_symb_size))
+ return (bfd_size_type) -1;
+ }
- execp->a_text = obj_textsec (abfd)->size + EXEC_BYTES_SIZE;
- N_SET_MAGIC (*execp, ZMAGIC);
- } else if (abfd->flags & WP_TEXT) {
- N_SET_MAGIC (*execp, NMAGIC);
- }
- N_SET_FLAGS (*execp, 0x1); /* copied from ld.c; who the hell knows? */
+ *syms = info->dynsym;
+ *strs = info->dynstr;
+ *strsize = info->dyninfo.ld_symb_size;
- if (abfd->flags & D_PAGED)
+#ifdef CHECK_DYNAMIC_HASH
+ /* Check my understanding of the dynamic hash table by making sure
+ that each symbol can be located in the hash table. */
+ {
+ bfd_size_type table_size;
+ bfd_byte *table;
+ bfd_size_type i;
+
+ if (info->dyninfo.ld_buckets > info->dynsym_count)
+ abort ();
+ table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
+ table = (bfd_byte *) alloca (table_size);
+ if (bfd_seek (abfd, info->dyninfo.ld_hash, SEEK_SET) != 0
+ || bfd_read ((PTR) table, 1, table_size, abfd) != table_size)
+ abort ();
+ for (i = 0; i < info->dynsym_count; i++)
{
- data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1)
- & (- PAGE_SIZE)) - obj_datasec(abfd)->size;
-
- if (data_pad > obj_bsssec(abfd)->size)
- execp->a_bss = 0;
- else
- execp->a_bss = obj_bsssec(abfd)->size - data_pad;
- execp->a_data = obj_datasec(abfd)->size + data_pad;
-
+ unsigned char *name;
+ unsigned long hash;
+
+ name = ((unsigned char *) info->dynstr
+ + GET_WORD (abfd, info->dynsym[i].e_strx));
+ hash = 0;
+ while (*name != '\0')
+ hash = (hash << 1) + *name++;
+ hash &= 0x7fffffff;
+ hash %= info->dyninfo.ld_buckets;
+ while (GET_WORD (abfd, table + 8 * hash) != i)
+ {
+ hash = GET_WORD (abfd, table + 8 * hash + 4);
+ if (hash == 0 || hash >= table_size / 8)
+ abort ();
+ }
}
- else {
- execp->a_data = obj_datasec (abfd)->size;
- execp->a_bss = obj_bsssec (abfd)->size;
}
+#endif /* CHECK_DYNAMIC_HASH */
- execp->a_syms = bfd_get_symcount (abfd) * sizeof (struct nlist);
- execp->a_entry = bfd_get_start_address (abfd);
-
-
-
-
- execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *
- obj_reloc_entry_size (abfd));
-
- execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *
- obj_reloc_entry_size (abfd));
-
- bfd_aout_swap_exec_header_out (abfd, execp, exec_bytes);
-
- bfd_seek (abfd, 0L, false);
- bfd_write ((PTR) exec_bytes, 1, EXEC_BYTES_SIZE, abfd);
-
- /* Now write out reloc info, followed by syms and strings */
-
- if (bfd_get_symcount (abfd) != 0)
- {
- bfd_seek (abfd,
- (long)(N_SYMOFF(*execp)), false);
-
- aout_write_syms (abfd);
-
- bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false);
-
- if (!aout_squirt_out_relocs (abfd, obj_textsec (abfd))) return false;
- bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false);
-
- if (!aout_squirt_out_relocs (abfd, obj_datasec (abfd))) return false;
- }
- return true;
+ return info->dynsym_count;
}
-\f
-/* core files */
-
-#define CORE_MAGIC 0x080456
-#define CORE_NAMELEN 16
-
-/* The core structure is taken from the Sun documentation.
- Unfortunately, they don't document the FPA structure, or at least I
- can't find it easily. Fortunately the core header contains its own
- length. So this shouldn't cause problems, except for c_ucode, which
- so far we don't use but is easy to find with a little arithmetic. */
-
-/* But the reg structure can be gotten from the SPARC processor handbook.
- This really should be in a GNU include file though so that gdb can use
- the same info. */
-struct regs {
- int r_psr;
- int r_pc;
- int r_npc;
- int r_y;
- int r_g1;
- int r_g2;
- int r_g3;
- int r_g4;
- int r_g5;
- int r_g6;
- int r_g7;
- int r_o0;
- int r_o1;
- int r_o2;
- int r_o3;
- int r_o4;
- int r_o5;
- int r_o6;
- int r_o7;
-};
-
-/* Taken from Sun documentation: */
-
-/* FIXME: It's worse than we expect. This struct contains TWO substructs
- neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
- even portably access the stuff in between! */
-
-struct core {
- int c_magic; /* Corefile magic number */
- int c_len; /* Sizeof (struct core) */
- struct regs c_regs; /* General purpose registers -- MACHDEP SIZE */
- struct exec c_aouthdr; /* A.out header */
- int c_signo; /* Killing signal, if any */
- int c_tsize; /* Text size (bytes) */
- int c_dsize; /* Data size (bytes) */
- int c_ssize; /* Stack size (bytes) */
- char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
- double fp_stuff[1]; /* external FPU state (size unknown by us) */
- /* The type "double" is critical here, for alignment.
- SunOS declares a struct here, but the struct's alignment
- is double since it contains doubles. */
- int c_ucode; /* Exception no. from u_code */
- /* (this member is not accessible by name since we don't
- portably know the size of fp_stuff.) */
-};
-/* Supposedly the user stack grows downward from the bottom of kernel memory.
- Presuming that this remains true, this definition will work. */
-#define USRSTACK (-(128*1024*1024))
-
-PROTO (static void, swapcore, (bfd *abfd, struct core *core));
-
-/* need this cast b/c ptr is really void * */
-#define core_hdr(bfd) (((struct suncordata *) (bfd->tdata))->hdr)
-#define core_datasec(bfd) (((struct suncordata *) ((bfd)->tdata))->data_section)
-#define core_stacksec(bfd) (((struct suncordata*)((bfd)->tdata))->stack_section)
-#define core_regsec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg_section)
-#define core_reg2sec(bfd) (((struct suncordata *) ((bfd)->tdata))->reg2_section)
-
-/* These are stored in the bfd's tdata */
-struct suncordata {
- struct core *hdr; /* core file header */
- asection *data_section;
- asection *stack_section;
- asection *reg_section;
- asection *reg2_section;
-};
+/* Read in the dynamic relocs for a section. */
-bfd_target *
-sunos4_core_file_p (abfd)
+static bfd_size_type
+MY(read_dynamic_relocs) (abfd, relocs)
bfd *abfd;
+ PTR *relocs;
{
- unsigned char longbuf[4]; /* Raw bytes of various header fields */
- int core_size;
- int core_mag;
- struct core *core;
- char *rawptr;
-
- bfd_error = system_call_error;
-
- if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
- sizeof (longbuf))
- return 0;
- core_mag = bfd_h_getlong (abfd, longbuf);
+ struct sunos_dynamic_info *info;
- if (core_mag != CORE_MAGIC) return 0;
-
- /* SunOS core headers can vary in length; second word is size; */
- if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
- sizeof (longbuf))
- return 0;
- core_size = bfd_h_getlong (abfd, longbuf);
- /* Sanity check */
- if (core_size > 20000)
- return 0;
-
- if (bfd_seek (abfd, 0L, false) < 0) return 0;
-
- rawptr = bfd_zalloc (abfd, core_size + sizeof (struct suncordata));
- if (rawptr == NULL) {
- bfd_error = no_memory;
- return 0;
- }
-
- core = (struct core *) (rawptr + sizeof (struct suncordata));
+ if (obj_aout_dynamic_info (abfd) == (PTR) NULL)
+ {
+ if (! sunos_read_dynamic_info (abfd))
+ return (bfd_size_type) -1;
+ }
- if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size) {
- bfd_error = system_call_error;
- bfd_release (abfd, rawptr);
+ info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
+ if (! info->valid || info->dynrel_count == 0)
return 0;
- }
- swapcore (abfd, core);
- set_tdata (abfd, ((struct suncordata *) rawptr));
- core_hdr (abfd) = core;
-
- /* create the sections. This is raunchy, but bfd_close wants to reclaim
- them */
- core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_stacksec (abfd) == NULL) {
-loser:
- bfd_error = no_memory;
- bfd_release (abfd, rawptr);
- return 0;
- }
- core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_datasec (abfd) == NULL) {
-loser1:
- bfd_release (abfd, core_stacksec (abfd));
- goto loser;
- }
- core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_regsec (abfd) == NULL) {
-loser2:
- bfd_release (abfd, core_datasec (abfd));
- goto loser1;
- }
- core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
- if (core_reg2sec (abfd) == NULL) {
- bfd_release (abfd, core_regsec (abfd));
- goto loser2;
- }
-
- core_stacksec (abfd)->name = ".stack";
- core_datasec (abfd)->name = ".data";
- core_regsec (abfd)->name = ".reg";
- core_reg2sec (abfd)->name = ".reg2";
-
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_regsec (abfd)->flags = SEC_ALLOC;
- core_reg2sec (abfd)->flags = SEC_ALLOC;
-
- core_stacksec (abfd)->size = core->c_ssize;
- core_datasec (abfd)->size = core->c_dsize;
- core_regsec (abfd)->size = (sizeof core->c_regs);
- /* Float regs take up end of struct, except c_ucode. */
- core_reg2sec (abfd)->size = core_size - (sizeof core->c_ucode) -
- (file_ptr)(((struct core *)0)->fp_stuff);
-
- core_stacksec (abfd)->vma = (USRSTACK - core->c_ssize);
- core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
- core_regsec (abfd)->vma = -1;
- core_reg2sec (abfd)->vma = -1;
-
- core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
- core_datasec (abfd)->filepos = core->c_len;
- /* In file header: */
- core_regsec (abfd)->filepos = (file_ptr)(&((struct core *)0)->c_regs);
- core_reg2sec (abfd)->filepos = (file_ptr)(((struct core *)0)->fp_stuff);
-
- /* Align to word at least */
- core_stacksec (abfd)->alignment_power = 2;
- core_datasec (abfd)->alignment_power = 2;
- core_regsec (abfd)->alignment_power = 2;
- core_reg2sec (abfd)->alignment_power = 2;
-
- abfd->sections = core_stacksec (abfd);
- core_stacksec (abfd)->next = core_datasec (abfd);
- core_datasec (abfd)->next = core_regsec (abfd);
- core_regsec (abfd)->next = core_reg2sec (abfd);
-
- abfd->section_count = 4;
-
- return abfd->xvec;
-}
-
-char *
-sunos4_core_file_failing_command (abfd)
- bfd *abfd;
-{
- return core_hdr (abfd)->c_cmdname;
-}
-
-int
-sunos4_core_file_failing_signal (abfd)
- bfd *abfd;
-{
- return core_hdr (abfd)->c_signo;
-}
-
-boolean
-sunos4_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd, *exec_bfd;
-{
- if (core_bfd->xvec != exec_bfd->xvec) {
- bfd_error = system_call_error;
- return false;
- }
+ if (info->dynrel == (struct external_nlist *) NULL)
+ {
+ info->dynrel = (PTR) bfd_alloc (abfd,
+ (info->dynrel_count
+ * obj_reloc_entry_size (abfd)));
+ if (bfd_seek (abfd, info->dyninfo.ld_rel, SEEK_SET) != 0
+ || (bfd_read ((PTR) info->dynrel, info->dynrel_count,
+ obj_reloc_entry_size (abfd), abfd)
+ != info->dynrel_count * obj_reloc_entry_size (abfd)))
+ return (bfd_size_type) -1;
+ }
- return (bcmp ((char *)&core_hdr (core_bfd), (char*) &exec_hdr (exec_bfd),
- sizeof (struct exec)) == 0) ? true : false;
-}
+ *relocs = info->dynrel;
-/* byte-swap core structure */
-/* FIXME, this needs more work to swap IN a core struct from raw bytes */
-static void
-swapcore (abfd, core)
- bfd *abfd;
- struct core *core;
-{
- unsigned char exec_bytes[EXEC_BYTES_SIZE];
-
- core->c_magic = bfd_h_getlong (abfd, (unsigned char *)&core->c_magic);
- core->c_len = bfd_h_getlong (abfd, (unsigned char *)&core->c_len );
- /* Leave integer registers in target byte order. */
- bcopy ((char *)&(core->c_aouthdr), (char *)exec_bytes, EXEC_BYTES_SIZE);
- bfd_aout_swap_exec_header_in (abfd, exec_bytes, &core->c_aouthdr);
- core->c_signo = bfd_h_getlong (abfd, (unsigned char *)&core->c_signo);
- core->c_tsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_tsize);
- core->c_dsize = bfd_h_getlong (abfd, (unsigned char *)&core->c_dsize);
- core->c_ssize = bfd_h_getlong (abfd, (unsigned char *)&core->c_ssize);
- /* Leave FP registers in target byte order. */
- /* Leave "c_ucode" unswapped for now, since we can't find it easily. */
+ return info->dynrel_count;
}
-\f
-/* We use BFD generic archive files. */
-#define aout_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define aout_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define aout_slurp_armap bfd_slurp_bsd_armap
-#define aout_slurp_extended_name_table bfd_true
-#define aout_write_armap bsd_write_armap
-#define aout_truncate_arname bfd_bsd_truncate_arname
-
-/* We use our own core file format. */
-#define aout_core_file_failing_command sunos4_core_file_failing_command
-#define aout_core_file_failing_signal sunos4_core_file_failing_signal
-#define aout_core_file_matches_executable_p \
- sunos4_core_file_matches_executable_p
-
-/* We implement these routines ourselves, rather than using the generic
- a.out versions. */
-#define aout_write_object_contents sunos4_write_object_contents
-
-bfd_target sunos_big_vec =
-{
- "a.out-sunos-big", /* name */
- bfd_target_aout_flavour_enum,
- true, /* target byte order */
- true, /* target headers byte order */
- (HAS_RELOC | EXEC_P | /* object flags */
- HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
- ' ', /* ar_pad_char */
- 16, /* ar_max_namelen */
- _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
- _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
-
- {_bfd_dummy_target, sunos4_object_p,
- bfd_generic_archive_p, sunos4_core_file_p},
- {bfd_false, sunos4_mkobject,
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, sunos4_write_object_contents, /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
-
- JUMP_TABLE(aout)
-};
projects / external / binutils.git / commitdiff