3998 lines
115 KiB
C
3998 lines
115 KiB
C
/* Generic ECOFF (Extended-COFF) routines.
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Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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Original version by Per Bothner.
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Full support added by Ian Lance Taylor, ian@cygnus.com.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: ecoff.c,v 1.1 1994/01/28 12:37:50 pk Exp $
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "seclet.h"
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#include "aout/ar.h"
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#include "aout/ranlib.h"
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/* FIXME: We need the definitions of N_SET[ADTB], but aout64.h defines
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some other stuff which we don't want and which conflicts with stuff
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we do want. */
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#include "libaout.h"
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#include "aout/aout64.h"
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#undef N_ABS
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#undef exec_hdr
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#undef obj_sym_filepos
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#include "coff/internal.h"
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#include "coff/sym.h"
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#include "coff/symconst.h"
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#include "coff/ecoff.h"
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#include "libcoff.h"
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#include "libecoff.h"
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/* Prototypes for static functions. */
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static int ecoff_get_magic PARAMS ((bfd *abfd));
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static void ecoff_set_symbol_info PARAMS ((bfd *abfd, SYMR *ecoff_sym,
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asymbol *asym, int ext,
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asymbol **indirect_ptr_ptr));
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static void ecoff_emit_aggregate PARAMS ((bfd *abfd, char *string,
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RNDXR *rndx, long isym,
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CONST char *which));
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static char *ecoff_type_to_string PARAMS ((bfd *abfd, union aux_ext *aux_ptr,
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unsigned int indx, int bigendian));
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static boolean ecoff_slurp_reloc_table PARAMS ((bfd *abfd, asection *section,
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asymbol **symbols));
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static void ecoff_clear_output_flags PARAMS ((bfd *abfd));
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static boolean ecoff_rel PARAMS ((bfd *output_bfd, bfd_seclet_type *seclet,
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asection *output_section, PTR data,
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boolean relocateable));
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static boolean ecoff_dump_seclet PARAMS ((bfd *abfd, bfd_seclet_type *seclet,
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asection *section, PTR data,
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boolean relocateable));
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static long ecoff_add_string PARAMS ((bfd *output_bfd, FDR *fdr,
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CONST char *string, boolean external));
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static boolean ecoff_get_debug PARAMS ((bfd *output_bfd,
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bfd_seclet_type *seclet,
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asection *section,
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boolean relocateable));
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static void ecoff_compute_section_file_positions PARAMS ((bfd *abfd));
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static unsigned int ecoff_armap_hash PARAMS ((CONST char *s,
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unsigned int *rehash,
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unsigned int size,
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unsigned int hlog));
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/* This stuff is somewhat copied from coffcode.h. */
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static asection bfd_debug_section = { "*DEBUG*" };
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/* Create an ECOFF object. */
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boolean
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ecoff_mkobject (abfd)
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bfd *abfd;
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{
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abfd->tdata.ecoff_obj_data = ((struct ecoff_tdata *)
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bfd_zalloc (abfd, sizeof (ecoff_data_type)));
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if (abfd->tdata.ecoff_obj_data == NULL)
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{
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bfd_error = no_memory;
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return false;
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}
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/* Always create a .scommon section for every BFD. This is a hack so
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that the linker has something to attach scSCommon symbols to. */
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if (bfd_make_section (abfd, SCOMMON) == NULL)
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return false;
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return true;
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}
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/* This is a hook called by coff_real_object_p to create any backend
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specific information. */
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PTR
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ecoff_mkobject_hook (abfd, filehdr, aouthdr)
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bfd *abfd;
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PTR filehdr;
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PTR aouthdr;
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{
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
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struct internal_aouthdr *internal_a = (struct internal_aouthdr *) aouthdr;
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ecoff_data_type *ecoff;
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asection *regsec;
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if (ecoff_mkobject (abfd) == false)
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return NULL;
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ecoff = ecoff_data (abfd);
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ecoff->gp_size = 8;
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ecoff->sym_filepos = internal_f->f_symptr;
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/* Create the .reginfo section to give programs outside BFD a way to
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see the information stored in the a.out header. See the comment
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in coff/ecoff.h. */
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regsec = bfd_make_section (abfd, REGINFO);
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if (regsec == NULL)
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return NULL;
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if (internal_a != (struct internal_aouthdr *) NULL)
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{
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int i;
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ecoff->text_start = internal_a->text_start;
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ecoff->text_end = internal_a->text_start + internal_a->tsize;
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ecoff->gp = internal_a->gp_value;
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ecoff->gprmask = internal_a->gprmask;
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for (i = 0; i < 4; i++)
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ecoff->cprmask[i] = internal_a->cprmask[i];
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ecoff->fprmask = internal_a->fprmask;
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if (internal_a->magic == ECOFF_AOUT_ZMAGIC)
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abfd->flags |= D_PAGED;
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}
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/* It turns out that no special action is required by the MIPS or
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Alpha ECOFF backends. They have different information in the
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a.out header, but we just copy it all (e.g., gprmask, cprmask and
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fprmask) and let the swapping routines ensure that only relevant
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information is written out. */
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return (PTR) ecoff;
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}
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/* This is a hook needed by SCO COFF, but we have nothing to do. */
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asection *
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ecoff_make_section_hook (abfd, name)
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bfd *abfd;
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char *name;
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{
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return (asection *) NULL;
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}
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/* Initialize a new section. */
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boolean
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ecoff_new_section_hook (abfd, section)
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bfd *abfd;
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asection *section;
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{
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section->alignment_power = abfd->xvec->align_power_min;
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if (strcmp (section->name, _TEXT) == 0)
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section->flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
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else if (strcmp (section->name, _DATA) == 0
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|| strcmp (section->name, _SDATA) == 0)
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section->flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
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else if (strcmp (section->name, _RDATA) == 0
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|| strcmp (section->name, _LIT8) == 0
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|| strcmp (section->name, _LIT4) == 0)
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section->flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
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else if (strcmp (section->name, _BSS) == 0
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|| strcmp (section->name, _SBSS) == 0)
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section->flags |= SEC_ALLOC;
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else if (strcmp (section->name, REGINFO) == 0)
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{
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section->flags |= SEC_HAS_CONTENTS | SEC_NEVER_LOAD;
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section->_raw_size = sizeof (struct ecoff_reginfo);
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}
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/* Probably any other section name is SEC_NEVER_LOAD, but I'm
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uncertain about .init on some systems and I don't know how shared
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libraries work. */
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return true;
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}
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/* Determine the machine architecture and type. This is called from
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the generic COFF routines. It is the inverse of ecoff_get_magic,
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below. This could be an ECOFF backend routine, with one version
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for each target, but there aren't all that many ECOFF targets. */
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boolean
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ecoff_set_arch_mach_hook (abfd, filehdr)
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bfd *abfd;
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PTR filehdr;
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{
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
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enum bfd_architecture arch;
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unsigned long mach;
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switch (internal_f->f_magic)
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{
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case MIPS_MAGIC_1:
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case MIPS_MAGIC_LITTLE:
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case MIPS_MAGIC_BIG:
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arch = bfd_arch_mips;
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mach = 3000;
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break;
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case MIPS_MAGIC_LITTLE2:
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case MIPS_MAGIC_BIG2:
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/* MIPS ISA level 2: the r6000 */
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arch = bfd_arch_mips;
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mach = 6000;
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break;
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case MIPS_MAGIC_LITTLE3:
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case MIPS_MAGIC_BIG3:
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/* MIPS ISA level 3: the r4000 */
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arch = bfd_arch_mips;
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mach = 4000;
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break;
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case ALPHA_MAGIC:
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arch = bfd_arch_alpha;
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mach = 0;
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break;
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default:
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arch = bfd_arch_obscure;
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mach = 0;
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break;
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}
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return bfd_default_set_arch_mach (abfd, arch, mach);
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}
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/* Get the magic number to use based on the architecture and machine.
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This is the inverse of ecoff_set_arch_mach_hook, above. */
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static int
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ecoff_get_magic (abfd)
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bfd *abfd;
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{
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int big, little;
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switch (bfd_get_arch (abfd))
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{
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case bfd_arch_mips:
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switch (bfd_get_mach (abfd))
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{
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default:
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case 0:
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case 3000:
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big = MIPS_MAGIC_BIG;
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little = MIPS_MAGIC_LITTLE;
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break;
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case 6000:
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big = MIPS_MAGIC_BIG2;
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little = MIPS_MAGIC_LITTLE2;
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break;
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case 4000:
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big = MIPS_MAGIC_BIG3;
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little = MIPS_MAGIC_LITTLE3;
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break;
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}
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return abfd->xvec->byteorder_big_p ? big : little;
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case bfd_arch_alpha:
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return ALPHA_MAGIC;
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default:
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abort ();
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return 0;
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}
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}
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/* Get the section s_flags to use for a section. */
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long
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ecoff_sec_to_styp_flags (name, flags)
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CONST char *name;
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flagword flags;
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{
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long styp;
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styp = 0;
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if (strcmp (name, _TEXT) == 0)
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styp = STYP_TEXT;
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else if (strcmp (name, _DATA) == 0)
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styp = STYP_DATA;
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else if (strcmp (name, _SDATA) == 0)
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styp = STYP_SDATA;
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else if (strcmp (name, _RDATA) == 0)
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styp = STYP_RDATA;
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else if (strcmp (name, _LIT8) == 0)
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styp = STYP_LIT8;
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else if (strcmp (name, _LIT4) == 0)
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styp = STYP_LIT4;
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else if (strcmp (name, _BSS) == 0)
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styp = STYP_BSS;
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else if (strcmp (name, _SBSS) == 0)
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styp = STYP_SBSS;
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else if (strcmp (name, _INIT) == 0)
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styp = STYP_ECOFF_INIT;
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else if (strcmp (name, _FINI) == 0)
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styp = STYP_ECOFF_FINI;
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else if (flags & SEC_CODE)
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styp = STYP_TEXT;
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else if (flags & SEC_DATA)
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styp = STYP_DATA;
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else if (flags & SEC_READONLY)
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styp = STYP_RDATA;
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else if (flags & SEC_LOAD)
|
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styp = STYP_REG;
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else
|
||
styp = STYP_BSS;
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if (flags & SEC_NEVER_LOAD)
|
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styp |= STYP_NOLOAD;
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||
|
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return styp;
|
||
}
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||
|
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/* Get the BFD flags to use for a section. */
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||
|
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flagword
|
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ecoff_styp_to_sec_flags (abfd, hdr)
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bfd *abfd;
|
||
PTR hdr;
|
||
{
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||
struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
|
||
long styp_flags = internal_s->s_flags;
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flagword sec_flags=0;
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||
|
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if (styp_flags & STYP_NOLOAD)
|
||
sec_flags |= SEC_NEVER_LOAD;
|
||
|
||
/* For 386 COFF, at least, an unloadable text or data section is
|
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actually a shared library section. */
|
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if ((styp_flags & STYP_TEXT)
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|| (styp_flags & STYP_ECOFF_INIT)
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|| (styp_flags & STYP_ECOFF_FINI))
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||
{
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if (sec_flags & SEC_NEVER_LOAD)
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sec_flags |= SEC_CODE | SEC_SHARED_LIBRARY;
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else
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sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
|
||
}
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||
else if ((styp_flags & STYP_DATA)
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||
|| (styp_flags & STYP_RDATA)
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||
|| (styp_flags & STYP_SDATA))
|
||
{
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if (sec_flags & SEC_NEVER_LOAD)
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sec_flags |= SEC_DATA | SEC_SHARED_LIBRARY;
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else
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sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
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if (styp_flags & STYP_RDATA)
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sec_flags |= SEC_READONLY;
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}
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||
else if ((styp_flags & STYP_BSS)
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|| (styp_flags & STYP_SBSS))
|
||
{
|
||
sec_flags |= SEC_ALLOC;
|
||
}
|
||
else if (styp_flags & STYP_INFO)
|
||
{
|
||
sec_flags |= SEC_NEVER_LOAD;
|
||
}
|
||
else if ((styp_flags & STYP_LIT8)
|
||
|| (styp_flags & STYP_LIT4))
|
||
{
|
||
sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
|
||
}
|
||
else
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||
{
|
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sec_flags |= SEC_ALLOC | SEC_LOAD;
|
||
}
|
||
|
||
return sec_flags;
|
||
}
|
||
|
||
/* Routines to swap auxiliary information in and out. I am assuming
|
||
that the auxiliary information format is always going to be target
|
||
independent. */
|
||
|
||
/* Swap in a type information record.
|
||
BIGEND says whether AUX symbols are big-endian or little-endian; this
|
||
info comes from the file header record (fh-fBigendian). */
|
||
|
||
void
|
||
ecoff_swap_tir_in (bigend, ext_copy, intern)
|
||
int bigend;
|
||
struct tir_ext *ext_copy;
|
||
TIR *intern;
|
||
{
|
||
struct tir_ext ext[1];
|
||
|
||
*ext = *ext_copy; /* Make it reasonable to do in-place. */
|
||
|
||
/* now the fun stuff... */
|
||
if (bigend) {
|
||
intern->fBitfield = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_BIG);
|
||
intern->continued = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_BIG);
|
||
intern->bt = (ext->t_bits1[0] & TIR_BITS1_BT_BIG)
|
||
>> TIR_BITS1_BT_SH_BIG;
|
||
intern->tq4 = (ext->t_tq45[0] & TIR_BITS_TQ4_BIG)
|
||
>> TIR_BITS_TQ4_SH_BIG;
|
||
intern->tq5 = (ext->t_tq45[0] & TIR_BITS_TQ5_BIG)
|
||
>> TIR_BITS_TQ5_SH_BIG;
|
||
intern->tq0 = (ext->t_tq01[0] & TIR_BITS_TQ0_BIG)
|
||
>> TIR_BITS_TQ0_SH_BIG;
|
||
intern->tq1 = (ext->t_tq01[0] & TIR_BITS_TQ1_BIG)
|
||
>> TIR_BITS_TQ1_SH_BIG;
|
||
intern->tq2 = (ext->t_tq23[0] & TIR_BITS_TQ2_BIG)
|
||
>> TIR_BITS_TQ2_SH_BIG;
|
||
intern->tq3 = (ext->t_tq23[0] & TIR_BITS_TQ3_BIG)
|
||
>> TIR_BITS_TQ3_SH_BIG;
|
||
} else {
|
||
intern->fBitfield = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_LITTLE);
|
||
intern->continued = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_LITTLE);
|
||
intern->bt = (ext->t_bits1[0] & TIR_BITS1_BT_LITTLE)
|
||
>> TIR_BITS1_BT_SH_LITTLE;
|
||
intern->tq4 = (ext->t_tq45[0] & TIR_BITS_TQ4_LITTLE)
|
||
>> TIR_BITS_TQ4_SH_LITTLE;
|
||
intern->tq5 = (ext->t_tq45[0] & TIR_BITS_TQ5_LITTLE)
|
||
>> TIR_BITS_TQ5_SH_LITTLE;
|
||
intern->tq0 = (ext->t_tq01[0] & TIR_BITS_TQ0_LITTLE)
|
||
>> TIR_BITS_TQ0_SH_LITTLE;
|
||
intern->tq1 = (ext->t_tq01[0] & TIR_BITS_TQ1_LITTLE)
|
||
>> TIR_BITS_TQ1_SH_LITTLE;
|
||
intern->tq2 = (ext->t_tq23[0] & TIR_BITS_TQ2_LITTLE)
|
||
>> TIR_BITS_TQ2_SH_LITTLE;
|
||
intern->tq3 = (ext->t_tq23[0] & TIR_BITS_TQ3_LITTLE)
|
||
>> TIR_BITS_TQ3_SH_LITTLE;
|
||
}
|
||
|
||
#ifdef TEST
|
||
if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
|
||
abort();
|
||
#endif
|
||
}
|
||
|
||
/* Swap out a type information record.
|
||
BIGEND says whether AUX symbols are big-endian or little-endian; this
|
||
info comes from the file header record (fh-fBigendian). */
|
||
|
||
void
|
||
ecoff_swap_tir_out (bigend, intern_copy, ext)
|
||
int bigend;
|
||
TIR *intern_copy;
|
||
struct tir_ext *ext;
|
||
{
|
||
TIR intern[1];
|
||
|
||
*intern = *intern_copy; /* Make it reasonable to do in-place. */
|
||
|
||
/* now the fun stuff... */
|
||
if (bigend) {
|
||
ext->t_bits1[0] = ((intern->fBitfield ? TIR_BITS1_FBITFIELD_BIG : 0)
|
||
| (intern->continued ? TIR_BITS1_CONTINUED_BIG : 0)
|
||
| ((intern->bt << TIR_BITS1_BT_SH_BIG)
|
||
& TIR_BITS1_BT_BIG));
|
||
ext->t_tq45[0] = (((intern->tq4 << TIR_BITS_TQ4_SH_BIG)
|
||
& TIR_BITS_TQ4_BIG)
|
||
| ((intern->tq5 << TIR_BITS_TQ5_SH_BIG)
|
||
& TIR_BITS_TQ5_BIG));
|
||
ext->t_tq01[0] = (((intern->tq0 << TIR_BITS_TQ0_SH_BIG)
|
||
& TIR_BITS_TQ0_BIG)
|
||
| ((intern->tq1 << TIR_BITS_TQ1_SH_BIG)
|
||
& TIR_BITS_TQ1_BIG));
|
||
ext->t_tq23[0] = (((intern->tq2 << TIR_BITS_TQ2_SH_BIG)
|
||
& TIR_BITS_TQ2_BIG)
|
||
| ((intern->tq3 << TIR_BITS_TQ3_SH_BIG)
|
||
& TIR_BITS_TQ3_BIG));
|
||
} else {
|
||
ext->t_bits1[0] = ((intern->fBitfield ? TIR_BITS1_FBITFIELD_LITTLE : 0)
|
||
| (intern->continued ? TIR_BITS1_CONTINUED_LITTLE : 0)
|
||
| ((intern->bt << TIR_BITS1_BT_SH_LITTLE)
|
||
& TIR_BITS1_BT_LITTLE));
|
||
ext->t_tq45[0] = (((intern->tq4 << TIR_BITS_TQ4_SH_LITTLE)
|
||
& TIR_BITS_TQ4_LITTLE)
|
||
| ((intern->tq5 << TIR_BITS_TQ5_SH_LITTLE)
|
||
& TIR_BITS_TQ5_LITTLE));
|
||
ext->t_tq01[0] = (((intern->tq0 << TIR_BITS_TQ0_SH_LITTLE)
|
||
& TIR_BITS_TQ0_LITTLE)
|
||
| ((intern->tq1 << TIR_BITS_TQ1_SH_LITTLE)
|
||
& TIR_BITS_TQ1_LITTLE));
|
||
ext->t_tq23[0] = (((intern->tq2 << TIR_BITS_TQ2_SH_LITTLE)
|
||
& TIR_BITS_TQ2_LITTLE)
|
||
| ((intern->tq3 << TIR_BITS_TQ3_SH_LITTLE)
|
||
& TIR_BITS_TQ3_LITTLE));
|
||
}
|
||
|
||
#ifdef TEST
|
||
if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
|
||
abort();
|
||
#endif
|
||
}
|
||
|
||
/* Swap in a relative symbol record. BIGEND says whether it is in
|
||
big-endian or little-endian format.*/
|
||
|
||
void
|
||
ecoff_swap_rndx_in (bigend, ext_copy, intern)
|
||
int bigend;
|
||
struct rndx_ext *ext_copy;
|
||
RNDXR *intern;
|
||
{
|
||
struct rndx_ext ext[1];
|
||
|
||
*ext = *ext_copy; /* Make it reasonable to do in-place. */
|
||
|
||
/* now the fun stuff... */
|
||
if (bigend) {
|
||
intern->rfd = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_BIG)
|
||
| ((ext->r_bits[1] & RNDX_BITS1_RFD_BIG)
|
||
>> RNDX_BITS1_RFD_SH_BIG);
|
||
intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_BIG)
|
||
<< RNDX_BITS1_INDEX_SH_LEFT_BIG)
|
||
| (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_BIG)
|
||
| (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_BIG);
|
||
} else {
|
||
intern->rfd = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_LITTLE)
|
||
| ((ext->r_bits[1] & RNDX_BITS1_RFD_LITTLE)
|
||
<< RNDX_BITS1_RFD_SH_LEFT_LITTLE);
|
||
intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_LITTLE)
|
||
>> RNDX_BITS1_INDEX_SH_LITTLE)
|
||
| (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_LITTLE)
|
||
| (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_LITTLE);
|
||
}
|
||
|
||
#ifdef TEST
|
||
if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
|
||
abort();
|
||
#endif
|
||
}
|
||
|
||
/* Swap out a relative symbol record. BIGEND says whether it is in
|
||
big-endian or little-endian format.*/
|
||
|
||
void
|
||
ecoff_swap_rndx_out (bigend, intern_copy, ext)
|
||
int bigend;
|
||
RNDXR *intern_copy;
|
||
struct rndx_ext *ext;
|
||
{
|
||
RNDXR intern[1];
|
||
|
||
*intern = *intern_copy; /* Make it reasonable to do in-place. */
|
||
|
||
/* now the fun stuff... */
|
||
if (bigend) {
|
||
ext->r_bits[0] = intern->rfd >> RNDX_BITS0_RFD_SH_LEFT_BIG;
|
||
ext->r_bits[1] = (((intern->rfd << RNDX_BITS1_RFD_SH_BIG)
|
||
& RNDX_BITS1_RFD_BIG)
|
||
| ((intern->index >> RNDX_BITS1_INDEX_SH_LEFT_BIG)
|
||
& RNDX_BITS1_INDEX_BIG));
|
||
ext->r_bits[2] = intern->index >> RNDX_BITS2_INDEX_SH_LEFT_BIG;
|
||
ext->r_bits[3] = intern->index >> RNDX_BITS3_INDEX_SH_LEFT_BIG;
|
||
} else {
|
||
ext->r_bits[0] = intern->rfd >> RNDX_BITS0_RFD_SH_LEFT_LITTLE;
|
||
ext->r_bits[1] = (((intern->rfd >> RNDX_BITS1_RFD_SH_LEFT_LITTLE)
|
||
& RNDX_BITS1_RFD_LITTLE)
|
||
| ((intern->index << RNDX_BITS1_INDEX_SH_LITTLE)
|
||
& RNDX_BITS1_INDEX_LITTLE));
|
||
ext->r_bits[2] = intern->index >> RNDX_BITS2_INDEX_SH_LEFT_LITTLE;
|
||
ext->r_bits[3] = intern->index >> RNDX_BITS3_INDEX_SH_LEFT_LITTLE;
|
||
}
|
||
|
||
#ifdef TEST
|
||
if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
|
||
abort();
|
||
#endif
|
||
}
|
||
|
||
/* Read in and swap the important symbolic information for an ECOFF
|
||
object file. This is called by gdb. */
|
||
|
||
boolean
|
||
ecoff_slurp_symbolic_info (abfd)
|
||
bfd *abfd;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
bfd_size_type external_hdr_size;
|
||
HDRR *internal_symhdr;
|
||
bfd_size_type raw_base;
|
||
bfd_size_type raw_size;
|
||
PTR raw;
|
||
bfd_size_type external_fdr_size;
|
||
char *fraw_src;
|
||
char *fraw_end;
|
||
struct fdr *fdr_ptr;
|
||
bfd_size_type raw_end;
|
||
bfd_size_type cb_end;
|
||
|
||
/* Check whether we've already gotten it, and whether there's any to
|
||
get. */
|
||
if (ecoff_data (abfd)->raw_syments != (PTR) NULL)
|
||
return true;
|
||
if (ecoff_data (abfd)->sym_filepos == 0)
|
||
{
|
||
bfd_get_symcount (abfd) = 0;
|
||
return true;
|
||
}
|
||
|
||
/* At this point bfd_get_symcount (abfd) holds the number of symbols
|
||
as read from the file header, but on ECOFF this is always the
|
||
size of the symbolic information header. It would be cleaner to
|
||
handle this when we first read the file in coffgen.c. */
|
||
external_hdr_size = backend->external_hdr_size;
|
||
if (bfd_get_symcount (abfd) != external_hdr_size)
|
||
{
|
||
bfd_error = bad_value;
|
||
return false;
|
||
}
|
||
|
||
/* Read the symbolic information header. */
|
||
raw = (PTR) alloca (external_hdr_size);
|
||
if (bfd_seek (abfd, ecoff_data (abfd)->sym_filepos, SEEK_SET) == -1
|
||
|| (bfd_read (raw, external_hdr_size, 1, abfd)
|
||
!= external_hdr_size))
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
internal_symhdr = &ecoff_data (abfd)->symbolic_header;
|
||
(*backend->swap_hdr_in) (abfd, raw, internal_symhdr);
|
||
|
||
if (internal_symhdr->magic != backend->sym_magic)
|
||
{
|
||
bfd_error = bad_value;
|
||
return false;
|
||
}
|
||
|
||
/* Now we can get the correct number of symbols. */
|
||
bfd_get_symcount (abfd) = (internal_symhdr->isymMax
|
||
+ internal_symhdr->iextMax);
|
||
|
||
/* Read all the symbolic information at once. */
|
||
raw_base = ecoff_data (abfd)->sym_filepos + external_hdr_size;
|
||
|
||
/* Alpha ecoff makes the determination of raw_size difficult. It has
|
||
an undocumented debug data section between the symhdr and the first
|
||
documented section. And the ordering of the sections varies between
|
||
statically and dynamically linked executables.
|
||
If bfd supports SEEK_END someday, this code could be simplified. */
|
||
|
||
raw_end = 0;
|
||
|
||
#define UPDATE_RAW_END(start, count, size) \
|
||
cb_end = internal_symhdr->start + internal_symhdr->count * (size); \
|
||
if (cb_end > raw_end) \
|
||
raw_end = cb_end
|
||
|
||
UPDATE_RAW_END (cbLineOffset, cbLine, sizeof (unsigned char));
|
||
UPDATE_RAW_END (cbDnOffset, idnMax, backend->external_dnr_size);
|
||
UPDATE_RAW_END (cbPdOffset, ipdMax, backend->external_pdr_size);
|
||
UPDATE_RAW_END (cbSymOffset, isymMax, backend->external_sym_size);
|
||
UPDATE_RAW_END (cbOptOffset, ioptMax, backend->external_opt_size);
|
||
UPDATE_RAW_END (cbAuxOffset, iauxMax, sizeof (union aux_ext));
|
||
UPDATE_RAW_END (cbSsOffset, issMax, sizeof (char));
|
||
UPDATE_RAW_END (cbSsExtOffset, issExtMax, sizeof (char));
|
||
UPDATE_RAW_END (cbFdOffset, ifdMax, backend->external_fdr_size);
|
||
UPDATE_RAW_END (cbRfdOffset, crfd, backend->external_rfd_size);
|
||
UPDATE_RAW_END (cbExtOffset, iextMax, backend->external_ext_size);
|
||
|
||
#undef UPDATE_RAW_END
|
||
|
||
raw_size = raw_end - raw_base;
|
||
if (raw_size == 0)
|
||
{
|
||
ecoff_data (abfd)->sym_filepos = 0;
|
||
return true;
|
||
}
|
||
raw = (PTR) bfd_alloc (abfd, raw_size);
|
||
if (raw == NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
if (bfd_read (raw, raw_size, 1, abfd) != raw_size)
|
||
{
|
||
bfd_error = system_call_error;
|
||
bfd_release (abfd, raw);
|
||
return false;
|
||
}
|
||
|
||
ecoff_data (abfd)->raw_size = raw_size;
|
||
ecoff_data (abfd)->raw_syments = raw;
|
||
|
||
/* Get pointers for the numeric offsets in the HDRR structure. */
|
||
#define FIX(off1, off2, type) \
|
||
if (internal_symhdr->off1 == 0) \
|
||
ecoff_data (abfd)->off2 = (type) NULL; \
|
||
else \
|
||
ecoff_data (abfd)->off2 = (type) ((char *) raw \
|
||
+ internal_symhdr->off1 \
|
||
- raw_base)
|
||
FIX (cbLineOffset, line, unsigned char *);
|
||
FIX (cbDnOffset, external_dnr, PTR);
|
||
FIX (cbPdOffset, external_pdr, PTR);
|
||
FIX (cbSymOffset, external_sym, PTR);
|
||
FIX (cbOptOffset, external_opt, PTR);
|
||
FIX (cbAuxOffset, external_aux, union aux_ext *);
|
||
FIX (cbSsOffset, ss, char *);
|
||
FIX (cbSsExtOffset, ssext, char *);
|
||
FIX (cbFdOffset, external_fdr, PTR);
|
||
FIX (cbRfdOffset, external_rfd, PTR);
|
||
FIX (cbExtOffset, external_ext, PTR);
|
||
#undef FIX
|
||
|
||
/* I don't want to always swap all the data, because it will just
|
||
waste time and most programs will never look at it. The only
|
||
time the linker needs most of the debugging information swapped
|
||
is when linking big-endian and little-endian MIPS object files
|
||
together, which is not a common occurrence.
|
||
|
||
We need to look at the fdr to deal with a lot of information in
|
||
the symbols, so we swap them here. */
|
||
ecoff_data (abfd)->fdr =
|
||
(struct fdr *) bfd_alloc (abfd,
|
||
(internal_symhdr->ifdMax *
|
||
sizeof (struct fdr)));
|
||
if (ecoff_data (abfd)->fdr == NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
external_fdr_size = backend->external_fdr_size;
|
||
fdr_ptr = ecoff_data (abfd)->fdr;
|
||
fraw_src = (char *) ecoff_data (abfd)->external_fdr;
|
||
fraw_end = fraw_src + internal_symhdr->ifdMax * external_fdr_size;
|
||
for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
|
||
(*backend->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* ECOFF symbol table routines. The ECOFF symbol table is described
|
||
in gcc/mips-tfile.c. */
|
||
|
||
/* ECOFF uses two common sections. One is the usual one, and the
|
||
other is for small objects. All the small objects are kept
|
||
together, and then referenced via the gp pointer, which yields
|
||
faster assembler code. This is what we use for the small common
|
||
section. */
|
||
static asection ecoff_scom_section;
|
||
static asymbol ecoff_scom_symbol;
|
||
static asymbol *ecoff_scom_symbol_ptr;
|
||
|
||
/* Create an empty symbol. */
|
||
|
||
asymbol *
|
||
ecoff_make_empty_symbol (abfd)
|
||
bfd *abfd;
|
||
{
|
||
ecoff_symbol_type *new;
|
||
|
||
new = (ecoff_symbol_type *) bfd_alloc (abfd, sizeof (ecoff_symbol_type));
|
||
if (new == (ecoff_symbol_type *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return (asymbol *) NULL;
|
||
}
|
||
memset (new, 0, sizeof *new);
|
||
new->symbol.section = (asection *) NULL;
|
||
new->fdr = (FDR *) NULL;
|
||
new->local = false;
|
||
new->native = NULL;
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
}
|
||
|
||
/* Set the BFD flags and section for an ECOFF symbol. */
|
||
|
||
static void
|
||
ecoff_set_symbol_info (abfd, ecoff_sym, asym, ext, indirect_ptr_ptr)
|
||
bfd *abfd;
|
||
SYMR *ecoff_sym;
|
||
asymbol *asym;
|
||
int ext;
|
||
asymbol **indirect_ptr_ptr;
|
||
{
|
||
asym->the_bfd = abfd;
|
||
asym->value = ecoff_sym->value;
|
||
asym->section = &bfd_debug_section;
|
||
asym->udata = NULL;
|
||
|
||
/* An indirect symbol requires two consecutive stabs symbols. */
|
||
if (*indirect_ptr_ptr != (asymbol *) NULL)
|
||
{
|
||
BFD_ASSERT (ECOFF_IS_STAB (ecoff_sym));
|
||
|
||
/* @@ Stuffing pointers into integers is a no-no.
|
||
We can usually get away with it if the integer is
|
||
large enough though. */
|
||
if (sizeof (asym) > sizeof (bfd_vma))
|
||
abort ();
|
||
(*indirect_ptr_ptr)->value = (bfd_vma) asym;
|
||
|
||
asym->flags = BSF_DEBUGGING;
|
||
asym->section = &bfd_und_section;
|
||
*indirect_ptr_ptr = NULL;
|
||
return;
|
||
}
|
||
|
||
if (ECOFF_IS_STAB (ecoff_sym)
|
||
&& (ECOFF_UNMARK_STAB (ecoff_sym->index) | N_EXT) == (N_INDR | N_EXT))
|
||
{
|
||
asym->flags = BSF_DEBUGGING | BSF_INDIRECT;
|
||
asym->section = &bfd_ind_section;
|
||
/* Pass this symbol on to the next call to this function. */
|
||
*indirect_ptr_ptr = asym;
|
||
return;
|
||
}
|
||
|
||
/* Most symbol types are just for debugging. */
|
||
switch (ecoff_sym->st)
|
||
{
|
||
case stGlobal:
|
||
case stStatic:
|
||
case stLabel:
|
||
case stProc:
|
||
case stStaticProc:
|
||
break;
|
||
case stNil:
|
||
if (ECOFF_IS_STAB (ecoff_sym))
|
||
{
|
||
asym->flags = BSF_DEBUGGING;
|
||
return;
|
||
}
|
||
break;
|
||
default:
|
||
asym->flags = BSF_DEBUGGING;
|
||
return;
|
||
}
|
||
|
||
if (ext)
|
||
asym->flags = BSF_EXPORT | BSF_GLOBAL;
|
||
else
|
||
asym->flags = BSF_LOCAL;
|
||
switch (ecoff_sym->sc)
|
||
{
|
||
case scNil:
|
||
/* Used for compiler generated labels. Leave them in the
|
||
debugging section, and mark them as local. If BSF_DEBUGGING
|
||
is set, then nm does not display them for some reason. If no
|
||
flags are set then the linker whines about them. */
|
||
asym->flags = BSF_LOCAL;
|
||
break;
|
||
case scText:
|
||
asym->section = bfd_make_section_old_way (abfd, ".text");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scData:
|
||
asym->section = bfd_make_section_old_way (abfd, ".data");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scBss:
|
||
asym->section = bfd_make_section_old_way (abfd, ".bss");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scRegister:
|
||
asym->flags = BSF_DEBUGGING;
|
||
break;
|
||
case scAbs:
|
||
asym->section = &bfd_abs_section;
|
||
break;
|
||
case scUndefined:
|
||
asym->section = &bfd_und_section;
|
||
asym->flags = 0;
|
||
asym->value = 0;
|
||
break;
|
||
case scCdbLocal:
|
||
case scBits:
|
||
case scCdbSystem:
|
||
case scRegImage:
|
||
case scInfo:
|
||
case scUserStruct:
|
||
asym->flags = BSF_DEBUGGING;
|
||
break;
|
||
case scSData:
|
||
asym->section = bfd_make_section_old_way (abfd, ".sdata");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scSBss:
|
||
asym->section = bfd_make_section_old_way (abfd, ".sbss");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scRData:
|
||
asym->section = bfd_make_section_old_way (abfd, ".rdata");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scVar:
|
||
asym->flags = BSF_DEBUGGING;
|
||
break;
|
||
case scCommon:
|
||
if (asym->value > ecoff_data (abfd)->gp_size)
|
||
{
|
||
asym->section = &bfd_com_section;
|
||
asym->flags = 0;
|
||
break;
|
||
}
|
||
/* Fall through. */
|
||
case scSCommon:
|
||
if (ecoff_scom_section.name == NULL)
|
||
{
|
||
/* Initialize the small common section. */
|
||
ecoff_scom_section.name = SCOMMON;
|
||
ecoff_scom_section.flags = SEC_IS_COMMON;
|
||
ecoff_scom_section.output_section = &ecoff_scom_section;
|
||
ecoff_scom_section.symbol = &ecoff_scom_symbol;
|
||
ecoff_scom_section.symbol_ptr_ptr = &ecoff_scom_symbol_ptr;
|
||
ecoff_scom_symbol.name = SCOMMON;
|
||
ecoff_scom_symbol.flags = BSF_SECTION_SYM;
|
||
ecoff_scom_symbol.section = &ecoff_scom_section;
|
||
ecoff_scom_symbol_ptr = &ecoff_scom_symbol;
|
||
}
|
||
asym->section = &ecoff_scom_section;
|
||
asym->flags = 0;
|
||
break;
|
||
case scVarRegister:
|
||
case scVariant:
|
||
asym->flags = BSF_DEBUGGING;
|
||
break;
|
||
case scSUndefined:
|
||
asym->section = &bfd_und_section;
|
||
asym->flags = 0;
|
||
asym->value = 0;
|
||
break;
|
||
case scInit:
|
||
asym->section = bfd_make_section_old_way (abfd, ".init");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
case scBasedVar:
|
||
case scXData:
|
||
case scPData:
|
||
asym->flags = BSF_DEBUGGING;
|
||
break;
|
||
case scFini:
|
||
asym->section = bfd_make_section_old_way (abfd, ".fini");
|
||
asym->value -= asym->section->vma;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Look for special constructors symbols and make relocation entries
|
||
in a special construction section. These are produced by the
|
||
-fgnu-linker argument to g++. */
|
||
if (ECOFF_IS_STAB (ecoff_sym))
|
||
{
|
||
switch (ECOFF_UNMARK_STAB (ecoff_sym->index))
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case N_SETA:
|
||
case N_SETT:
|
||
case N_SETD:
|
||
case N_SETB:
|
||
{
|
||
const char *name;
|
||
asection *section;
|
||
arelent_chain *reloc_chain;
|
||
unsigned int bitsize;
|
||
|
||
/* Get a section with the same name as the symbol (usually
|
||
__CTOR_LIST__ or __DTOR_LIST__). FIXME: gcc uses the
|
||
name ___CTOR_LIST (three underscores). We need
|
||
__CTOR_LIST (two underscores), since ECOFF doesn't use
|
||
a leading underscore. This should be handled by gcc,
|
||
but instead we do it here. Actually, this should all
|
||
be done differently anyhow. */
|
||
name = bfd_asymbol_name (asym);
|
||
if (name[0] == '_' && name[1] == '_' && name[2] == '_')
|
||
{
|
||
++name;
|
||
asym->name = name;
|
||
}
|
||
section = bfd_get_section_by_name (abfd, name);
|
||
if (section == (asection *) NULL)
|
||
{
|
||
char *copy;
|
||
|
||
copy = (char *) bfd_alloc (abfd, strlen (name) + 1);
|
||
strcpy (copy, name);
|
||
section = bfd_make_section (abfd, copy);
|
||
}
|
||
|
||
/* Build a reloc pointing to this constructor. */
|
||
reloc_chain =
|
||
(arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
|
||
reloc_chain->relent.sym_ptr_ptr =
|
||
bfd_get_section (asym)->symbol_ptr_ptr;
|
||
reloc_chain->relent.address = section->_raw_size;
|
||
reloc_chain->relent.addend = asym->value;
|
||
reloc_chain->relent.howto =
|
||
ecoff_backend (abfd)->constructor_reloc;
|
||
|
||
/* Set up the constructor section to hold the reloc. */
|
||
section->flags = SEC_CONSTRUCTOR;
|
||
++section->reloc_count;
|
||
|
||
/* Constructor sections must be rounded to a boundary
|
||
based on the bitsize. These are not real sections--
|
||
they are handled specially by the linker--so the ECOFF
|
||
16 byte alignment restriction does not apply. */
|
||
bitsize = ecoff_backend (abfd)->constructor_bitsize;
|
||
section->alignment_power = 1;
|
||
while ((1 << section->alignment_power) < bitsize / 8)
|
||
++section->alignment_power;
|
||
|
||
reloc_chain->next = section->constructor_chain;
|
||
section->constructor_chain = reloc_chain;
|
||
section->_raw_size += bitsize / 8;
|
||
|
||
/* Mark the symbol as a constructor. */
|
||
asym->flags |= BSF_CONSTRUCTOR;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Read an ECOFF symbol table. */
|
||
|
||
boolean
|
||
ecoff_slurp_symbol_table (abfd)
|
||
bfd *abfd;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
const bfd_size_type external_ext_size = backend->external_ext_size;
|
||
const bfd_size_type external_sym_size = backend->external_sym_size;
|
||
void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
|
||
= backend->swap_ext_in;
|
||
void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
|
||
= backend->swap_sym_in;
|
||
bfd_size_type internal_size;
|
||
ecoff_symbol_type *internal;
|
||
ecoff_symbol_type *internal_ptr;
|
||
asymbol *indirect_ptr;
|
||
char *eraw_src;
|
||
char *eraw_end;
|
||
FDR *fdr_ptr;
|
||
FDR *fdr_end;
|
||
|
||
/* If we've already read in the symbol table, do nothing. */
|
||
if (ecoff_data (abfd)->canonical_symbols != NULL)
|
||
return true;
|
||
|
||
/* Get the symbolic information. */
|
||
if (ecoff_slurp_symbolic_info (abfd) == false)
|
||
return false;
|
||
if (bfd_get_symcount (abfd) == 0)
|
||
return true;
|
||
|
||
internal_size = bfd_get_symcount (abfd) * sizeof (ecoff_symbol_type);
|
||
internal = (ecoff_symbol_type *) bfd_alloc (abfd, internal_size);
|
||
if (internal == NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
|
||
internal_ptr = internal;
|
||
indirect_ptr = NULL;
|
||
eraw_src = (char *) ecoff_data (abfd)->external_ext;
|
||
eraw_end = (eraw_src
|
||
+ (ecoff_data (abfd)->symbolic_header.iextMax
|
||
* external_ext_size));
|
||
for (; eraw_src < eraw_end; eraw_src += external_ext_size, internal_ptr++)
|
||
{
|
||
EXTR internal_esym;
|
||
|
||
(*swap_ext_in) (abfd, (PTR) eraw_src, &internal_esym);
|
||
internal_ptr->symbol.name = (ecoff_data (abfd)->ssext
|
||
+ internal_esym.asym.iss);
|
||
ecoff_set_symbol_info (abfd, &internal_esym.asym,
|
||
&internal_ptr->symbol, 1, &indirect_ptr);
|
||
/* The alpha uses a negative ifd field for section symbols. */
|
||
if (internal_esym.ifd >= 0)
|
||
internal_ptr->fdr = ecoff_data (abfd)->fdr + internal_esym.ifd;
|
||
else
|
||
internal_ptr->fdr = NULL;
|
||
internal_ptr->local = false;
|
||
internal_ptr->native = (PTR) eraw_src;
|
||
}
|
||
BFD_ASSERT (indirect_ptr == (asymbol *) NULL);
|
||
|
||
/* The local symbols must be accessed via the fdr's, because the
|
||
string and aux indices are relative to the fdr information. */
|
||
fdr_ptr = ecoff_data (abfd)->fdr;
|
||
fdr_end = fdr_ptr + ecoff_data (abfd)->symbolic_header.ifdMax;
|
||
for (; fdr_ptr < fdr_end; fdr_ptr++)
|
||
{
|
||
char *lraw_src;
|
||
char *lraw_end;
|
||
|
||
lraw_src = ((char *) ecoff_data (abfd)->external_sym
|
||
+ fdr_ptr->isymBase * external_sym_size);
|
||
lraw_end = lraw_src + fdr_ptr->csym * external_sym_size;
|
||
for (;
|
||
lraw_src < lraw_end;
|
||
lraw_src += external_sym_size, internal_ptr++)
|
||
{
|
||
SYMR internal_sym;
|
||
|
||
(*swap_sym_in) (abfd, (PTR) lraw_src, &internal_sym);
|
||
internal_ptr->symbol.name = (ecoff_data (abfd)->ss
|
||
+ fdr_ptr->issBase
|
||
+ internal_sym.iss);
|
||
ecoff_set_symbol_info (abfd, &internal_sym,
|
||
&internal_ptr->symbol, 0, &indirect_ptr);
|
||
internal_ptr->fdr = fdr_ptr;
|
||
internal_ptr->local = true;
|
||
internal_ptr->native = (PTR) lraw_src;
|
||
}
|
||
}
|
||
BFD_ASSERT (indirect_ptr == (asymbol *) NULL);
|
||
|
||
ecoff_data (abfd)->canonical_symbols = internal;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Return the amount of space needed for the canonical symbols. */
|
||
|
||
unsigned int
|
||
ecoff_get_symtab_upper_bound (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if (ecoff_slurp_symbolic_info (abfd) == false
|
||
|| bfd_get_symcount (abfd) == 0)
|
||
return 0;
|
||
|
||
return (bfd_get_symcount (abfd) + 1) * (sizeof (ecoff_symbol_type *));
|
||
}
|
||
|
||
/* Get the canonicals symbols. */
|
||
|
||
unsigned int
|
||
ecoff_get_symtab (abfd, alocation)
|
||
bfd *abfd;
|
||
asymbol **alocation;
|
||
{
|
||
unsigned int counter = 0;
|
||
ecoff_symbol_type *symbase;
|
||
ecoff_symbol_type **location = (ecoff_symbol_type **) alocation;
|
||
|
||
if (ecoff_slurp_symbol_table (abfd) == false
|
||
|| bfd_get_symcount (abfd) == 0)
|
||
return 0;
|
||
|
||
symbase = ecoff_data (abfd)->canonical_symbols;
|
||
while (counter < bfd_get_symcount (abfd))
|
||
{
|
||
*(location++) = symbase++;
|
||
counter++;
|
||
}
|
||
*location++ = (ecoff_symbol_type *) NULL;
|
||
return bfd_get_symcount (abfd);
|
||
}
|
||
|
||
/* Turn ECOFF type information into a printable string.
|
||
ecoff_emit_aggregate and ecoff_type_to_string are from
|
||
gcc/mips-tdump.c, with swapping added and used_ptr removed. */
|
||
|
||
/* Write aggregate information to a string. */
|
||
|
||
static void
|
||
ecoff_emit_aggregate (abfd, string, rndx, isym, which)
|
||
bfd *abfd;
|
||
char *string;
|
||
RNDXR *rndx;
|
||
long isym;
|
||
CONST char *which;
|
||
{
|
||
int ifd = rndx->rfd;
|
||
int indx = rndx->index;
|
||
int sym_base, ss_base;
|
||
CONST char *name;
|
||
|
||
if (ifd == 0xfff)
|
||
ifd = isym;
|
||
|
||
sym_base = ecoff_data (abfd)->fdr[ifd].isymBase;
|
||
ss_base = ecoff_data (abfd)->fdr[ifd].issBase;
|
||
|
||
if (indx == indexNil)
|
||
name = "/* no name */";
|
||
else
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
SYMR sym;
|
||
|
||
indx += sym_base;
|
||
(*backend->swap_sym_in) (abfd,
|
||
((char *) ecoff_data (abfd)->external_sym
|
||
+ indx * backend->external_sym_size),
|
||
&sym);
|
||
name = ecoff_data (abfd)->ss + ss_base + sym.iss;
|
||
}
|
||
|
||
sprintf (string,
|
||
"%s %s { ifd = %d, index = %d }",
|
||
which, name, ifd,
|
||
indx + ecoff_data (abfd)->symbolic_header.iextMax);
|
||
}
|
||
|
||
/* Convert the type information to string format. */
|
||
|
||
static char *
|
||
ecoff_type_to_string (abfd, aux_ptr, indx, bigendian)
|
||
bfd *abfd;
|
||
union aux_ext *aux_ptr;
|
||
unsigned int indx;
|
||
int bigendian;
|
||
{
|
||
AUXU u;
|
||
struct qual {
|
||
unsigned int type;
|
||
int low_bound;
|
||
int high_bound;
|
||
int stride;
|
||
} qualifiers[7];
|
||
|
||
unsigned int basic_type;
|
||
int i;
|
||
static char buffer1[1024];
|
||
static char buffer2[1024];
|
||
char *p1 = buffer1;
|
||
char *p2 = buffer2;
|
||
RNDXR rndx;
|
||
|
||
for (i = 0; i < 7; i++)
|
||
{
|
||
qualifiers[i].low_bound = 0;
|
||
qualifiers[i].high_bound = 0;
|
||
qualifiers[i].stride = 0;
|
||
}
|
||
|
||
if (AUX_GET_ISYM (bigendian, &aux_ptr[indx]) == -1)
|
||
return "-1 (no type)";
|
||
ecoff_swap_tir_in (bigendian, &aux_ptr[indx++].a_ti, &u.ti);
|
||
|
||
basic_type = u.ti.bt;
|
||
qualifiers[0].type = u.ti.tq0;
|
||
qualifiers[1].type = u.ti.tq1;
|
||
qualifiers[2].type = u.ti.tq2;
|
||
qualifiers[3].type = u.ti.tq3;
|
||
qualifiers[4].type = u.ti.tq4;
|
||
qualifiers[5].type = u.ti.tq5;
|
||
qualifiers[6].type = tqNil;
|
||
|
||
/*
|
||
* Go get the basic type.
|
||
*/
|
||
switch (basic_type)
|
||
{
|
||
case btNil: /* undefined */
|
||
strcpy (p1, "nil");
|
||
break;
|
||
|
||
case btAdr: /* address - integer same size as pointer */
|
||
strcpy (p1, "address");
|
||
break;
|
||
|
||
case btChar: /* character */
|
||
strcpy (p1, "char");
|
||
break;
|
||
|
||
case btUChar: /* unsigned character */
|
||
strcpy (p1, "unsigned char");
|
||
break;
|
||
|
||
case btShort: /* short */
|
||
strcpy (p1, "short");
|
||
break;
|
||
|
||
case btUShort: /* unsigned short */
|
||
strcpy (p1, "unsigned short");
|
||
break;
|
||
|
||
case btInt: /* int */
|
||
strcpy (p1, "int");
|
||
break;
|
||
|
||
case btUInt: /* unsigned int */
|
||
strcpy (p1, "unsigned int");
|
||
break;
|
||
|
||
case btLong: /* long */
|
||
strcpy (p1, "long");
|
||
break;
|
||
|
||
case btULong: /* unsigned long */
|
||
strcpy (p1, "unsigned long");
|
||
break;
|
||
|
||
case btFloat: /* float (real) */
|
||
strcpy (p1, "float");
|
||
break;
|
||
|
||
case btDouble: /* Double (real) */
|
||
strcpy (p1, "double");
|
||
break;
|
||
|
||
/* Structures add 1-2 aux words:
|
||
1st word is [ST_RFDESCAPE, offset] pointer to struct def;
|
||
2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
|
||
|
||
case btStruct: /* Structure (Record) */
|
||
ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
|
||
ecoff_emit_aggregate (abfd, p1, &rndx,
|
||
AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
|
||
"struct");
|
||
indx++; /* skip aux words */
|
||
break;
|
||
|
||
/* Unions add 1-2 aux words:
|
||
1st word is [ST_RFDESCAPE, offset] pointer to union def;
|
||
2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
|
||
|
||
case btUnion: /* Union */
|
||
ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
|
||
ecoff_emit_aggregate (abfd, p1, &rndx,
|
||
AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
|
||
"union");
|
||
indx++; /* skip aux words */
|
||
break;
|
||
|
||
/* Enumerations add 1-2 aux words:
|
||
1st word is [ST_RFDESCAPE, offset] pointer to enum def;
|
||
2nd word is file index if 1st word rfd is ST_RFDESCAPE. */
|
||
|
||
case btEnum: /* Enumeration */
|
||
ecoff_swap_rndx_in (bigendian, &aux_ptr[indx].a_rndx, &rndx);
|
||
ecoff_emit_aggregate (abfd, p1, &rndx,
|
||
AUX_GET_ISYM (bigendian, &aux_ptr[indx+1]),
|
||
"enum");
|
||
indx++; /* skip aux words */
|
||
break;
|
||
|
||
case btTypedef: /* defined via a typedef, isymRef points */
|
||
strcpy (p1, "typedef");
|
||
break;
|
||
|
||
case btRange: /* subrange of int */
|
||
strcpy (p1, "subrange");
|
||
break;
|
||
|
||
case btSet: /* pascal sets */
|
||
strcpy (p1, "set");
|
||
break;
|
||
|
||
case btComplex: /* fortran complex */
|
||
strcpy (p1, "complex");
|
||
break;
|
||
|
||
case btDComplex: /* fortran double complex */
|
||
strcpy (p1, "double complex");
|
||
break;
|
||
|
||
case btIndirect: /* forward or unnamed typedef */
|
||
strcpy (p1, "forward/unamed typedef");
|
||
break;
|
||
|
||
case btFixedDec: /* Fixed Decimal */
|
||
strcpy (p1, "fixed decimal");
|
||
break;
|
||
|
||
case btFloatDec: /* Float Decimal */
|
||
strcpy (p1, "float decimal");
|
||
break;
|
||
|
||
case btString: /* Varying Length Character String */
|
||
strcpy (p1, "string");
|
||
break;
|
||
|
||
case btBit: /* Aligned Bit String */
|
||
strcpy (p1, "bit");
|
||
break;
|
||
|
||
case btPicture: /* Picture */
|
||
strcpy (p1, "picture");
|
||
break;
|
||
|
||
case btVoid: /* Void */
|
||
strcpy (p1, "void");
|
||
break;
|
||
|
||
default:
|
||
sprintf (p1, "Unknown basic type %d", (int) basic_type);
|
||
break;
|
||
}
|
||
|
||
p1 += strlen (buffer1);
|
||
|
||
/*
|
||
* If this is a bitfield, get the bitsize.
|
||
*/
|
||
if (u.ti.fBitfield)
|
||
{
|
||
int bitsize;
|
||
|
||
bitsize = AUX_GET_WIDTH (bigendian, &aux_ptr[indx++]);
|
||
sprintf (p1, " : %d", bitsize);
|
||
p1 += strlen (buffer1);
|
||
}
|
||
|
||
|
||
/*
|
||
* Deal with any qualifiers.
|
||
*/
|
||
if (qualifiers[0].type != tqNil)
|
||
{
|
||
/*
|
||
* Snarf up any array bounds in the correct order. Arrays
|
||
* store 5 successive words in the aux. table:
|
||
* word 0 RNDXR to type of the bounds (ie, int)
|
||
* word 1 Current file descriptor index
|
||
* word 2 low bound
|
||
* word 3 high bound (or -1 if [])
|
||
* word 4 stride size in bits
|
||
*/
|
||
for (i = 0; i < 7; i++)
|
||
{
|
||
if (qualifiers[i].type == tqArray)
|
||
{
|
||
qualifiers[i].low_bound =
|
||
AUX_GET_DNLOW (bigendian, &aux_ptr[indx+2]);
|
||
qualifiers[i].high_bound =
|
||
AUX_GET_DNHIGH (bigendian, &aux_ptr[indx+3]);
|
||
qualifiers[i].stride =
|
||
AUX_GET_WIDTH (bigendian, &aux_ptr[indx+4]);
|
||
indx += 5;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Now print out the qualifiers.
|
||
*/
|
||
for (i = 0; i < 6; i++)
|
||
{
|
||
switch (qualifiers[i].type)
|
||
{
|
||
case tqNil:
|
||
case tqMax:
|
||
break;
|
||
|
||
case tqPtr:
|
||
strcpy (p2, "ptr to ");
|
||
p2 += sizeof ("ptr to ")-1;
|
||
break;
|
||
|
||
case tqVol:
|
||
strcpy (p2, "volatile ");
|
||
p2 += sizeof ("volatile ")-1;
|
||
break;
|
||
|
||
case tqFar:
|
||
strcpy (p2, "far ");
|
||
p2 += sizeof ("far ")-1;
|
||
break;
|
||
|
||
case tqProc:
|
||
strcpy (p2, "func. ret. ");
|
||
p2 += sizeof ("func. ret. ");
|
||
break;
|
||
|
||
case tqArray:
|
||
{
|
||
int first_array = i;
|
||
int j;
|
||
|
||
/* Print array bounds reversed (ie, in the order the C
|
||
programmer writes them). C is such a fun language.... */
|
||
|
||
while (i < 5 && qualifiers[i+1].type == tqArray)
|
||
i++;
|
||
|
||
for (j = i; j >= first_array; j--)
|
||
{
|
||
strcpy (p2, "array [");
|
||
p2 += sizeof ("array [")-1;
|
||
if (qualifiers[j].low_bound != 0)
|
||
sprintf (p2,
|
||
"%ld:%ld {%ld bits}",
|
||
(long) qualifiers[j].low_bound,
|
||
(long) qualifiers[j].high_bound,
|
||
(long) qualifiers[j].stride);
|
||
|
||
else if (qualifiers[j].high_bound != -1)
|
||
sprintf (p2,
|
||
"%ld {%ld bits}",
|
||
(long) (qualifiers[j].high_bound + 1),
|
||
(long) (qualifiers[j].stride));
|
||
|
||
else
|
||
sprintf (p2, " {%ld bits}", (long) (qualifiers[j].stride));
|
||
|
||
p2 += strlen (p2);
|
||
strcpy (p2, "] of ");
|
||
p2 += sizeof ("] of ")-1;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
strcpy (p2, buffer1);
|
||
return buffer2;
|
||
}
|
||
|
||
/* Return information about ECOFF symbol SYMBOL in RET. */
|
||
|
||
void
|
||
ecoff_get_symbol_info (abfd, symbol, ret)
|
||
bfd *abfd; /* Ignored. */
|
||
asymbol *symbol;
|
||
symbol_info *ret;
|
||
{
|
||
bfd_symbol_info (symbol, ret);
|
||
}
|
||
|
||
/* Print information about an ECOFF symbol. */
|
||
|
||
void
|
||
ecoff_print_symbol (abfd, filep, symbol, how)
|
||
bfd *abfd;
|
||
PTR filep;
|
||
asymbol *symbol;
|
||
bfd_print_symbol_type how;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
FILE *file = (FILE *)filep;
|
||
|
||
switch (how)
|
||
{
|
||
case bfd_print_symbol_name:
|
||
fprintf (file, "%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_more:
|
||
if (ecoffsymbol (symbol)->local)
|
||
{
|
||
SYMR ecoff_sym;
|
||
|
||
(*backend->swap_sym_in) (abfd, ecoffsymbol (symbol)->native,
|
||
&ecoff_sym);
|
||
fprintf (file, "ecoff local ");
|
||
fprintf_vma (file, (bfd_vma) ecoff_sym.value);
|
||
fprintf (file, " %x %x", (unsigned) ecoff_sym.st,
|
||
(unsigned) ecoff_sym.sc);
|
||
}
|
||
else
|
||
{
|
||
EXTR ecoff_ext;
|
||
|
||
(*backend->swap_ext_in) (abfd, ecoffsymbol (symbol)->native,
|
||
&ecoff_ext);
|
||
fprintf (file, "ecoff extern ");
|
||
fprintf_vma (file, (bfd_vma) ecoff_ext.asym.value);
|
||
fprintf (file, " %x %x", (unsigned) ecoff_ext.asym.st,
|
||
(unsigned) ecoff_ext.asym.sc);
|
||
}
|
||
break;
|
||
case bfd_print_symbol_all:
|
||
/* Print out the symbols in a reasonable way */
|
||
{
|
||
char type;
|
||
int pos;
|
||
EXTR ecoff_ext;
|
||
char jmptbl;
|
||
char cobol_main;
|
||
char weakext;
|
||
|
||
if (ecoffsymbol (symbol)->local)
|
||
{
|
||
(*backend->swap_sym_in) (abfd, ecoffsymbol (symbol)->native,
|
||
&ecoff_ext.asym);
|
||
type = 'l';
|
||
pos = ((((char *) ecoffsymbol (symbol)->native
|
||
- (char *) ecoff_data (abfd)->external_sym)
|
||
/ backend->external_sym_size)
|
||
+ ecoff_data (abfd)->symbolic_header.iextMax);
|
||
jmptbl = ' ';
|
||
cobol_main = ' ';
|
||
weakext = ' ';
|
||
}
|
||
else
|
||
{
|
||
(*backend->swap_ext_in) (abfd, ecoffsymbol (symbol)->native,
|
||
&ecoff_ext);
|
||
type = 'e';
|
||
pos = (((char *) ecoffsymbol (symbol)->native
|
||
- (char *) ecoff_data (abfd)->external_ext)
|
||
/ backend->external_ext_size);
|
||
jmptbl = ecoff_ext.jmptbl ? 'j' : ' ';
|
||
cobol_main = ecoff_ext.cobol_main ? 'c' : ' ';
|
||
weakext = ecoff_ext.weakext ? 'w' : ' ';
|
||
}
|
||
|
||
fprintf (file, "[%3d] %c ",
|
||
pos, type);
|
||
fprintf_vma (file, (bfd_vma) ecoff_ext.asym.value);
|
||
fprintf (file, " st %x sc %x indx %x %c%c%c %s",
|
||
(unsigned) ecoff_ext.asym.st,
|
||
(unsigned) ecoff_ext.asym.sc,
|
||
(unsigned) ecoff_ext.asym.index,
|
||
jmptbl, cobol_main, weakext,
|
||
symbol->name);
|
||
|
||
if (ecoffsymbol (symbol)->fdr != NULL
|
||
&& ecoff_ext.asym.index != indexNil)
|
||
{
|
||
unsigned int indx;
|
||
int bigendian;
|
||
bfd_size_type sym_base;
|
||
union aux_ext *aux_base;
|
||
|
||
indx = ecoff_ext.asym.index;
|
||
|
||
/* sym_base is used to map the fdr relative indices which
|
||
appear in the file to the position number which we are
|
||
using. */
|
||
sym_base = ecoffsymbol (symbol)->fdr->isymBase;
|
||
if (ecoffsymbol (symbol)->local)
|
||
sym_base += ecoff_data (abfd)->symbolic_header.iextMax;
|
||
|
||
/* aux_base is the start of the aux entries for this file;
|
||
asym.index is an offset from this. */
|
||
aux_base = (ecoff_data (abfd)->external_aux
|
||
+ ecoffsymbol (symbol)->fdr->iauxBase);
|
||
|
||
/* The aux entries are stored in host byte order; the
|
||
order is indicated by a bit in the fdr. */
|
||
bigendian = ecoffsymbol (symbol)->fdr->fBigendian;
|
||
|
||
/* This switch is basically from gcc/mips-tdump.c */
|
||
switch (ecoff_ext.asym.st)
|
||
{
|
||
case stNil:
|
||
case stLabel:
|
||
break;
|
||
|
||
case stFile:
|
||
case stBlock:
|
||
fprintf (file, "\n End+1 symbol: %ld",
|
||
(long) (indx + sym_base));
|
||
break;
|
||
|
||
case stEnd:
|
||
if (ecoff_ext.asym.sc == scText
|
||
|| ecoff_ext.asym.sc == scInfo)
|
||
fprintf (file, "\n First symbol: %ld",
|
||
(long) (indx + sym_base));
|
||
else
|
||
fprintf (file, "\n First symbol: %ld",
|
||
(long) (AUX_GET_ISYM (bigendian,
|
||
&aux_base[ecoff_ext.asym.index])
|
||
+ sym_base));
|
||
break;
|
||
|
||
case stProc:
|
||
case stStaticProc:
|
||
if (ECOFF_IS_STAB (&ecoff_ext.asym))
|
||
;
|
||
else if (ecoffsymbol (symbol)->local)
|
||
fprintf (file, "\n End+1 symbol: %-7ld Type: %s",
|
||
(long) (AUX_GET_ISYM (bigendian,
|
||
&aux_base[ecoff_ext.asym.index])
|
||
+ sym_base),
|
||
ecoff_type_to_string (abfd, aux_base, indx + 1,
|
||
bigendian));
|
||
else
|
||
fprintf (file, "\n Local symbol: %d",
|
||
(indx
|
||
+ sym_base
|
||
+ ecoff_data (abfd)->symbolic_header.iextMax));
|
||
break;
|
||
|
||
default:
|
||
if (! ECOFF_IS_STAB (&ecoff_ext.asym))
|
||
fprintf (file, "\n Type: %s",
|
||
ecoff_type_to_string (abfd, aux_base, indx,
|
||
bigendian));
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Read in the relocs for a section. */
|
||
|
||
static boolean
|
||
ecoff_slurp_reloc_table (abfd, section, symbols)
|
||
bfd *abfd;
|
||
asection *section;
|
||
asymbol **symbols;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
arelent *internal_relocs;
|
||
bfd_size_type external_reloc_size;
|
||
bfd_size_type external_relocs_size;
|
||
char *external_relocs;
|
||
arelent *rptr;
|
||
unsigned int i;
|
||
|
||
if (section->relocation != (arelent *) NULL
|
||
|| section->reloc_count == 0
|
||
|| (section->flags & SEC_CONSTRUCTOR) != 0)
|
||
return true;
|
||
|
||
if (ecoff_slurp_symbol_table (abfd) == false)
|
||
return false;
|
||
|
||
internal_relocs = (arelent *) bfd_alloc (abfd,
|
||
(sizeof (arelent)
|
||
* section->reloc_count));
|
||
external_reloc_size = backend->external_reloc_size;
|
||
external_relocs_size = external_reloc_size * section->reloc_count;
|
||
external_relocs = (char *) bfd_alloc (abfd, external_relocs_size);
|
||
if (internal_relocs == (arelent *) NULL
|
||
|| external_relocs == (char *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
if (bfd_seek (abfd, section->rel_filepos, SEEK_SET) != 0)
|
||
return false;
|
||
if (bfd_read (external_relocs, 1, external_relocs_size, abfd)
|
||
!= external_relocs_size)
|
||
{
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
for (i = 0, rptr = internal_relocs; i < section->reloc_count; i++, rptr++)
|
||
{
|
||
struct internal_reloc intern;
|
||
|
||
(*backend->swap_reloc_in) (abfd,
|
||
external_relocs + i * external_reloc_size,
|
||
&intern);
|
||
|
||
if (intern.r_extern)
|
||
{
|
||
/* r_symndx is an index into the external symbols. */
|
||
BFD_ASSERT (intern.r_symndx >= 0
|
||
&& (intern.r_symndx
|
||
< ecoff_data (abfd)->symbolic_header.iextMax));
|
||
rptr->sym_ptr_ptr = symbols + intern.r_symndx;
|
||
rptr->addend = 0;
|
||
}
|
||
else if (intern.r_symndx == RELOC_SECTION_NONE
|
||
|| intern.r_symndx == RELOC_SECTION_ABS)
|
||
{
|
||
rptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
|
||
rptr->addend = 0;
|
||
}
|
||
else
|
||
{
|
||
CONST char *sec_name;
|
||
asection *sec;
|
||
|
||
/* r_symndx is a section key. */
|
||
switch (intern.r_symndx)
|
||
{
|
||
case RELOC_SECTION_TEXT: sec_name = ".text"; break;
|
||
case RELOC_SECTION_RDATA: sec_name = ".rdata"; break;
|
||
case RELOC_SECTION_DATA: sec_name = ".data"; break;
|
||
case RELOC_SECTION_SDATA: sec_name = ".sdata"; break;
|
||
case RELOC_SECTION_SBSS: sec_name = ".sbss"; break;
|
||
case RELOC_SECTION_BSS: sec_name = ".bss"; break;
|
||
case RELOC_SECTION_INIT: sec_name = ".init"; break;
|
||
case RELOC_SECTION_LIT8: sec_name = ".lit8"; break;
|
||
case RELOC_SECTION_LIT4: sec_name = ".lit4"; break;
|
||
case RELOC_SECTION_XDATA: sec_name = ".xdata"; break;
|
||
case RELOC_SECTION_PDATA: sec_name = ".pdata"; break;
|
||
case RELOC_SECTION_LITA: sec_name = ".lita"; break;
|
||
default: abort ();
|
||
}
|
||
|
||
sec = bfd_get_section_by_name (abfd, sec_name);
|
||
if (sec == (asection *) NULL)
|
||
abort ();
|
||
rptr->sym_ptr_ptr = sec->symbol_ptr_ptr;
|
||
|
||
rptr->addend = - bfd_get_section_vma (abfd, sec);
|
||
}
|
||
|
||
rptr->address = intern.r_vaddr - bfd_get_section_vma (abfd, section);
|
||
|
||
/* Let the backend select the howto field and do any other
|
||
required processing. */
|
||
(*backend->finish_reloc) (abfd, &intern, rptr);
|
||
}
|
||
|
||
bfd_release (abfd, external_relocs);
|
||
|
||
section->relocation = internal_relocs;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Get a canonical list of relocs. */
|
||
|
||
unsigned int
|
||
ecoff_canonicalize_reloc (abfd, section, relptr, symbols)
|
||
bfd *abfd;
|
||
asection *section;
|
||
arelent **relptr;
|
||
asymbol **symbols;
|
||
{
|
||
unsigned int count;
|
||
|
||
if (section->flags & SEC_CONSTRUCTOR)
|
||
{
|
||
arelent_chain *chain;
|
||
|
||
/* This section has relocs made up by us, not the file, so take
|
||
them out of their chain and place them into the data area
|
||
provided. */
|
||
for (count = 0, chain = section->constructor_chain;
|
||
count < section->reloc_count;
|
||
count++, chain = chain->next)
|
||
*relptr++ = &chain->relent;
|
||
}
|
||
else
|
||
{
|
||
arelent *tblptr;
|
||
|
||
if (ecoff_slurp_reloc_table (abfd, section, symbols) == false)
|
||
return 0;
|
||
|
||
tblptr = section->relocation;
|
||
if (tblptr == (arelent *) NULL)
|
||
return 0;
|
||
|
||
for (count = 0; count < section->reloc_count; count++)
|
||
*relptr++ = tblptr++;
|
||
}
|
||
|
||
*relptr = (arelent *) NULL;
|
||
|
||
return section->reloc_count;
|
||
}
|
||
|
||
/* Provided a BFD, a section and an offset into the section, calculate
|
||
and return the name of the source file and the line nearest to the
|
||
wanted location. */
|
||
|
||
boolean
|
||
ecoff_find_nearest_line (abfd,
|
||
section,
|
||
ignore_symbols,
|
||
offset,
|
||
filename_ptr,
|
||
functionname_ptr,
|
||
retline_ptr)
|
||
bfd *abfd;
|
||
asection *section;
|
||
asymbol **ignore_symbols;
|
||
bfd_vma offset;
|
||
CONST char **filename_ptr;
|
||
CONST char **functionname_ptr;
|
||
unsigned int *retline_ptr;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
FDR *fdr_ptr;
|
||
FDR *fdr_start;
|
||
FDR *fdr_end;
|
||
FDR *fdr_hold;
|
||
bfd_size_type external_pdr_size;
|
||
char *pdr_ptr;
|
||
char *pdr_end;
|
||
PDR pdr;
|
||
unsigned char *line_ptr;
|
||
unsigned char *line_end;
|
||
int lineno;
|
||
|
||
/* If we're not in the .text section, we don't have any line
|
||
numbers. */
|
||
if (strcmp (section->name, _TEXT) != 0
|
||
|| offset < ecoff_data (abfd)->text_start
|
||
|| offset >= ecoff_data (abfd)->text_end)
|
||
return false;
|
||
|
||
/* Make sure we have the FDR's. */
|
||
if (ecoff_slurp_symbolic_info (abfd) == false
|
||
|| bfd_get_symcount (abfd) == 0)
|
||
return false;
|
||
|
||
/* Each file descriptor (FDR) has a memory address. Here we track
|
||
down which FDR we want. The FDR's are stored in increasing
|
||
memory order. If speed is ever important, this can become a
|
||
binary search. We must ignore FDR's with no PDR entries; they
|
||
will have the adr of the FDR before or after them. */
|
||
fdr_start = ecoff_data (abfd)->fdr;
|
||
fdr_end = fdr_start + ecoff_data (abfd)->symbolic_header.ifdMax;
|
||
fdr_hold = (FDR *) NULL;
|
||
for (fdr_ptr = fdr_start; fdr_ptr < fdr_end; fdr_ptr++)
|
||
{
|
||
if (fdr_ptr->cpd == 0)
|
||
continue;
|
||
if (offset < fdr_ptr->adr)
|
||
break;
|
||
fdr_hold = fdr_ptr;
|
||
}
|
||
if (fdr_hold == (FDR *) NULL)
|
||
return false;
|
||
fdr_ptr = fdr_hold;
|
||
|
||
/* Each FDR has a list of procedure descriptors (PDR). PDR's also
|
||
have an address, which is relative to the FDR address, and are
|
||
also stored in increasing memory order. */
|
||
offset -= fdr_ptr->adr;
|
||
external_pdr_size = backend->external_pdr_size;
|
||
pdr_ptr = ((char *) ecoff_data (abfd)->external_pdr
|
||
+ fdr_ptr->ipdFirst * external_pdr_size);
|
||
pdr_end = pdr_ptr + fdr_ptr->cpd * external_pdr_size;
|
||
(*backend->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr);
|
||
|
||
/* The address of the first PDR is an offset which applies to the
|
||
addresses of all the PDR's. */
|
||
offset += pdr.adr;
|
||
|
||
for (pdr_ptr += external_pdr_size;
|
||
pdr_ptr < pdr_end;
|
||
pdr_ptr += external_pdr_size)
|
||
{
|
||
(*backend->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr);
|
||
if (offset < pdr.adr)
|
||
break;
|
||
}
|
||
|
||
/* Now we can look for the actual line number. The line numbers are
|
||
stored in a very funky format, which I won't try to describe.
|
||
Note that right here pdr_ptr and pdr hold the PDR *after* the one
|
||
we want; we need this to compute line_end. */
|
||
line_end = ecoff_data (abfd)->line;
|
||
if (pdr_ptr == pdr_end)
|
||
line_end += fdr_ptr->cbLineOffset + fdr_ptr->cbLine;
|
||
else
|
||
line_end += fdr_ptr->cbLineOffset + pdr.cbLineOffset;
|
||
|
||
/* Now change pdr and pdr_ptr to the one we want. */
|
||
pdr_ptr -= external_pdr_size;
|
||
(*backend->swap_pdr_in) (abfd, (PTR) pdr_ptr, &pdr);
|
||
|
||
offset -= pdr.adr;
|
||
lineno = pdr.lnLow;
|
||
line_ptr = (ecoff_data (abfd)->line
|
||
+ fdr_ptr->cbLineOffset
|
||
+ pdr.cbLineOffset);
|
||
while (line_ptr < line_end)
|
||
{
|
||
int delta;
|
||
int count;
|
||
|
||
delta = *line_ptr >> 4;
|
||
if (delta >= 0x8)
|
||
delta -= 0x10;
|
||
count = (*line_ptr & 0xf) + 1;
|
||
++line_ptr;
|
||
if (delta == -8)
|
||
{
|
||
delta = (((line_ptr[0]) & 0xff) << 8) + ((line_ptr[1]) & 0xff);
|
||
if (delta >= 0x8000)
|
||
delta -= 0x10000;
|
||
line_ptr += 2;
|
||
}
|
||
lineno += delta;
|
||
if (offset < count * 4)
|
||
break;
|
||
offset -= count * 4;
|
||
}
|
||
|
||
/* If fdr_ptr->rss is -1, then this file does not have full symbols,
|
||
at least according to gdb/mipsread.c. */
|
||
if (fdr_ptr->rss == -1)
|
||
{
|
||
*filename_ptr = NULL;
|
||
if (pdr.isym == -1)
|
||
*functionname_ptr = NULL;
|
||
else
|
||
{
|
||
EXTR proc_ext;
|
||
|
||
(*backend->swap_ext_in) (abfd,
|
||
((char *) ecoff_data (abfd)->external_ext
|
||
+ pdr.isym * backend->external_ext_size),
|
||
&proc_ext);
|
||
*functionname_ptr = ecoff_data (abfd)->ssext + proc_ext.asym.iss;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
SYMR proc_sym;
|
||
|
||
*filename_ptr = ecoff_data (abfd)->ss + fdr_ptr->issBase + fdr_ptr->rss;
|
||
(*backend->swap_sym_in) (abfd,
|
||
((char *) ecoff_data (abfd)->external_sym
|
||
+ ((fdr_ptr->isymBase + pdr.isym)
|
||
* backend->external_sym_size)),
|
||
&proc_sym);
|
||
*functionname_ptr = (ecoff_data (abfd)->ss
|
||
+ fdr_ptr->issBase
|
||
+ proc_sym.iss);
|
||
}
|
||
if (lineno == ilineNil)
|
||
lineno = 0;
|
||
*retline_ptr = lineno;
|
||
return true;
|
||
}
|
||
|
||
/* We can't use the generic linking routines for ECOFF, because we
|
||
have to handle all the debugging information. The generic link
|
||
routine just works out the section contents and attaches a list of
|
||
symbols.
|
||
|
||
We link by looping over all the seclets. We make two passes. On
|
||
the first we set the actual section contents and determine the size
|
||
of the debugging information. On the second we accumulate the
|
||
debugging information and write it out.
|
||
|
||
This currently always accumulates the debugging information, which
|
||
is incorrect, because it ignores the -s and -S options of the
|
||
linker. The linker needs to be modified to give us that
|
||
information in a more useful format (currently it just provides a
|
||
list of symbols which should appear in the output file). */
|
||
|
||
/* Clear the output_has_begun flag for all the input BFD's. We use it
|
||
to avoid linking in the debugging information for a BFD more than
|
||
once. */
|
||
|
||
static void
|
||
ecoff_clear_output_flags (abfd)
|
||
bfd *abfd;
|
||
{
|
||
register asection *o;
|
||
register bfd_seclet_type *p;
|
||
|
||
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
|
||
for (p = o->seclets_head;
|
||
p != (bfd_seclet_type *) NULL;
|
||
p = p->next)
|
||
if (p->type == bfd_indirect_seclet)
|
||
p->u.indirect.section->owner->output_has_begun = false;
|
||
}
|
||
|
||
/* Handle an indirect seclet on the first pass. Set the contents of
|
||
the output section, and accumulate the debugging information if
|
||
any. */
|
||
|
||
static boolean
|
||
ecoff_rel (output_bfd, seclet, output_section, data, relocateable)
|
||
bfd *output_bfd;
|
||
bfd_seclet_type *seclet;
|
||
asection *output_section;
|
||
PTR data;
|
||
boolean relocateable;
|
||
{
|
||
bfd *input_bfd;
|
||
HDRR *output_symhdr;
|
||
HDRR *input_symhdr;
|
||
|
||
if ((output_section->flags & SEC_HAS_CONTENTS)
|
||
&& !(output_section->flags & SEC_NEVER_LOAD)
|
||
&& (output_section->flags & SEC_LOAD)
|
||
&& seclet->size)
|
||
{
|
||
data = (PTR) bfd_get_relocated_section_contents (output_bfd,
|
||
seclet,
|
||
data,
|
||
relocateable);
|
||
if (bfd_set_section_contents (output_bfd,
|
||
output_section,
|
||
data,
|
||
seclet->offset,
|
||
seclet->size)
|
||
== false)
|
||
{
|
||
abort();
|
||
}
|
||
}
|
||
|
||
input_bfd = seclet->u.indirect.section->owner;
|
||
|
||
/* We want to figure out how much space will be required to
|
||
incorporate all the debugging information from input_bfd. We use
|
||
the output_has_begun field to avoid adding it in more than once.
|
||
The actual incorporation is done in the second pass, in
|
||
ecoff_get_debug. The code has to parallel that code in its
|
||
manipulations of output_symhdr. */
|
||
|
||
if (input_bfd->output_has_begun)
|
||
return true;
|
||
input_bfd->output_has_begun = true;
|
||
|
||
output_symhdr = &ecoff_data (output_bfd)->symbolic_header;
|
||
|
||
if (input_bfd->xvec->flavour != bfd_target_ecoff_flavour)
|
||
{
|
||
asymbol **symbols;
|
||
asymbol **sym_ptr;
|
||
asymbol **sym_end;
|
||
|
||
/* We just accumulate local symbols from a non-ECOFF BFD. The
|
||
external symbols are handled separately. */
|
||
|
||
symbols = (asymbol **) bfd_alloc (output_bfd,
|
||
get_symtab_upper_bound (input_bfd));
|
||
if (symbols == (asymbol **) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
sym_end = symbols + bfd_canonicalize_symtab (input_bfd, symbols);
|
||
|
||
for (sym_ptr = symbols; sym_ptr < sym_end; sym_ptr++)
|
||
{
|
||
size_t len;
|
||
|
||
len = strlen ((*sym_ptr)->name);
|
||
if (((*sym_ptr)->flags & BSF_EXPORT) == 0)
|
||
{
|
||
++output_symhdr->isymMax;
|
||
output_symhdr->issMax += len + 1;
|
||
}
|
||
}
|
||
|
||
bfd_release (output_bfd, (PTR) symbols);
|
||
|
||
++output_symhdr->ifdMax;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We simply add in the information from another ECOFF BFD. First
|
||
we make sure we have the symbolic information. */
|
||
if (ecoff_slurp_symbol_table (input_bfd) == false)
|
||
return false;
|
||
if (bfd_get_symcount (input_bfd) == 0)
|
||
return true;
|
||
|
||
input_symhdr = &ecoff_data (input_bfd)->symbolic_header;
|
||
|
||
/* Figure out how much information we are going to be putting in.
|
||
The external symbols are handled separately. */
|
||
output_symhdr->ilineMax += input_symhdr->ilineMax;
|
||
output_symhdr->cbLine += input_symhdr->cbLine;
|
||
output_symhdr->idnMax += input_symhdr->idnMax;
|
||
output_symhdr->ipdMax += input_symhdr->ipdMax;
|
||
output_symhdr->isymMax += input_symhdr->isymMax;
|
||
output_symhdr->ioptMax += input_symhdr->ioptMax;
|
||
output_symhdr->iauxMax += input_symhdr->iauxMax;
|
||
output_symhdr->issMax += input_symhdr->issMax;
|
||
output_symhdr->ifdMax += input_symhdr->ifdMax;
|
||
|
||
/* The RFD's are special, since we create them if needed. */
|
||
if (input_symhdr->crfd > 0)
|
||
output_symhdr->crfd += input_symhdr->crfd;
|
||
else
|
||
output_symhdr->crfd += input_symhdr->ifdMax;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Handle an arbitrary seclet on the first pass. */
|
||
|
||
static boolean
|
||
ecoff_dump_seclet (abfd, seclet, section, data, relocateable)
|
||
bfd *abfd;
|
||
bfd_seclet_type *seclet;
|
||
asection *section;
|
||
PTR data;
|
||
boolean relocateable;
|
||
{
|
||
switch (seclet->type)
|
||
{
|
||
case bfd_indirect_seclet:
|
||
/* The contents of this section come from another one somewhere
|
||
else. */
|
||
return ecoff_rel (abfd, seclet, section, data, relocateable);
|
||
|
||
case bfd_fill_seclet:
|
||
/* Fill in the section with fill.value. This is used to pad out
|
||
sections, but we must avoid padding the .bss section. */
|
||
if ((section->flags & SEC_HAS_CONTENTS) == 0)
|
||
{
|
||
if (seclet->u.fill.value != 0)
|
||
abort ();
|
||
}
|
||
else
|
||
{
|
||
char *d = (char *) bfd_alloc (abfd, seclet->size);
|
||
unsigned int i;
|
||
boolean ret;
|
||
|
||
for (i = 0; i < seclet->size; i+=2)
|
||
d[i] = seclet->u.fill.value >> 8;
|
||
for (i = 1; i < seclet->size; i+=2)
|
||
d[i] = seclet->u.fill.value;
|
||
ret = bfd_set_section_contents (abfd, section, d, seclet->offset,
|
||
seclet->size);
|
||
bfd_release (abfd, (PTR) d);
|
||
return ret;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
abort();
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Add a string to the debugging information we are accumulating for a
|
||
file. Return the offset from the fdr string base or from the
|
||
external string base. */
|
||
|
||
static long
|
||
ecoff_add_string (output_bfd, fdr, string, external)
|
||
bfd *output_bfd;
|
||
FDR *fdr;
|
||
CONST char *string;
|
||
boolean external;
|
||
{
|
||
HDRR *symhdr;
|
||
size_t len;
|
||
long ret;
|
||
|
||
symhdr = &ecoff_data (output_bfd)->symbolic_header;
|
||
len = strlen (string);
|
||
if (external)
|
||
{
|
||
strcpy (ecoff_data (output_bfd)->ssext + symhdr->issExtMax, string);
|
||
ret = symhdr->issExtMax;
|
||
symhdr->issExtMax += len + 1;
|
||
}
|
||
else
|
||
{
|
||
strcpy (ecoff_data (output_bfd)->ss + symhdr->issMax, string);
|
||
ret = fdr->cbSs;
|
||
symhdr->issMax += len + 1;
|
||
fdr->cbSs += len + 1;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/* Accumulate the debugging information from an input section. */
|
||
|
||
static boolean
|
||
ecoff_get_debug (output_bfd, seclet, section, relocateable)
|
||
bfd *output_bfd;
|
||
bfd_seclet_type *seclet;
|
||
asection *section;
|
||
boolean relocateable;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (output_bfd);
|
||
const bfd_size_type external_sym_size = backend->external_sym_size;
|
||
const bfd_size_type external_pdr_size = backend->external_pdr_size;
|
||
const bfd_size_type external_fdr_size = backend->external_fdr_size;
|
||
const bfd_size_type external_rfd_size = backend->external_rfd_size;
|
||
void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
|
||
= backend->swap_sym_in;
|
||
void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
|
||
= backend->swap_sym_out;
|
||
void (* const swap_pdr_in) PARAMS ((bfd *, PTR, PDR *))
|
||
= backend->swap_pdr_in;
|
||
void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
|
||
= backend->swap_fdr_out;
|
||
void (* const swap_rfd_out) PARAMS ((bfd *, const RFDT *, PTR))
|
||
= backend->swap_rfd_out;
|
||
bfd *input_bfd;
|
||
HDRR *output_symhdr;
|
||
HDRR *input_symhdr;
|
||
ecoff_data_type *output_ecoff;
|
||
ecoff_data_type *input_ecoff;
|
||
unsigned int count;
|
||
char *sym_out;
|
||
ecoff_symbol_type *esym_ptr;
|
||
ecoff_symbol_type *esym_end;
|
||
FDR *fdr_ptr;
|
||
FDR *fdr_end;
|
||
char *fdr_out;
|
||
|
||
input_bfd = seclet->u.indirect.section->owner;
|
||
|
||
/* Don't get the information more than once. */
|
||
if (input_bfd->output_has_begun)
|
||
return true;
|
||
input_bfd->output_has_begun = true;
|
||
|
||
output_ecoff = ecoff_data (output_bfd);
|
||
output_symhdr = &output_ecoff->symbolic_header;
|
||
|
||
if (input_bfd->xvec->flavour != bfd_target_ecoff_flavour)
|
||
{
|
||
FDR fdr;
|
||
asymbol **symbols;
|
||
asymbol **sym_ptr;
|
||
asymbol **sym_end;
|
||
|
||
/* This is not an ECOFF BFD. Just gather the symbols. */
|
||
|
||
memset (&fdr, 0, sizeof fdr);
|
||
|
||
fdr.adr = bfd_get_section_vma (output_bfd, section) + seclet->offset;
|
||
fdr.issBase = output_symhdr->issMax;
|
||
fdr.cbSs = 0;
|
||
fdr.rss = ecoff_add_string (output_bfd,
|
||
&fdr,
|
||
bfd_get_filename (input_bfd),
|
||
false);
|
||
fdr.isymBase = output_symhdr->isymMax;
|
||
|
||
/* Get the local symbols from the input BFD. */
|
||
symbols = (asymbol **) bfd_alloc (output_bfd,
|
||
get_symtab_upper_bound (input_bfd));
|
||
if (symbols == (asymbol **) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
sym_end = symbols + bfd_canonicalize_symtab (input_bfd, symbols);
|
||
|
||
/* Handle the local symbols. Any external symbols are handled
|
||
separately. */
|
||
fdr.csym = 0;
|
||
for (sym_ptr = symbols; sym_ptr != sym_end; sym_ptr++)
|
||
{
|
||
SYMR internal_sym;
|
||
|
||
if (((*sym_ptr)->flags & BSF_EXPORT) != 0)
|
||
continue;
|
||
memset (&internal_sym, 0, sizeof internal_sym);
|
||
internal_sym.iss = ecoff_add_string (output_bfd,
|
||
&fdr,
|
||
(*sym_ptr)->name,
|
||
false);
|
||
|
||
if (bfd_is_com_section ((*sym_ptr)->section)
|
||
|| (*sym_ptr)->section == &bfd_und_section)
|
||
internal_sym.value = (*sym_ptr)->value;
|
||
else
|
||
internal_sym.value = ((*sym_ptr)->value
|
||
+ (*sym_ptr)->section->output_offset
|
||
+ (*sym_ptr)->section->output_section->vma);
|
||
internal_sym.st = stNil;
|
||
internal_sym.sc = scUndefined;
|
||
internal_sym.index = indexNil;
|
||
(*swap_sym_out) (output_bfd, &internal_sym,
|
||
((char *) output_ecoff->external_sym
|
||
+ output_symhdr->isymMax * external_sym_size));
|
||
++fdr.csym;
|
||
++output_symhdr->isymMax;
|
||
}
|
||
|
||
bfd_release (output_bfd, (PTR) symbols);
|
||
|
||
/* Leave everything else in the FDR zeroed out. This will cause
|
||
the lang field to be langC. The fBigendian field will
|
||
indicate little endian format, but it doesn't matter because
|
||
it only applies to aux fields and there are none. */
|
||
|
||
(*swap_fdr_out) (output_bfd, &fdr,
|
||
((char *) output_ecoff->external_fdr
|
||
+ output_symhdr->ifdMax * external_fdr_size));
|
||
++output_symhdr->ifdMax;
|
||
return true;
|
||
}
|
||
|
||
/* This is an ECOFF BFD. We want to grab the information from
|
||
input_bfd and attach it to output_bfd. */
|
||
count = bfd_get_symcount (input_bfd);
|
||
if (count == 0)
|
||
return true;
|
||
input_ecoff = ecoff_data (input_bfd);
|
||
input_symhdr = &input_ecoff->symbolic_header;
|
||
|
||
/* I think that it is more efficient to simply copy the debugging
|
||
information from the input BFD to the output BFD. Because ECOFF
|
||
uses relative pointers for most of the debugging information,
|
||
only a little of it has to be changed at all. */
|
||
|
||
/* Swap in the local symbols, adjust their values, and swap them out
|
||
again. The external symbols are handled separately. */
|
||
sym_out = ((char *) output_ecoff->external_sym
|
||
+ output_symhdr->isymMax * external_sym_size);
|
||
|
||
esym_ptr = ecoff_data (input_bfd)->canonical_symbols;
|
||
esym_end = esym_ptr + count;
|
||
for (; esym_ptr < esym_end; esym_ptr++)
|
||
{
|
||
if (esym_ptr->local)
|
||
{
|
||
SYMR sym;
|
||
|
||
(*swap_sym_in) (input_bfd, esym_ptr->native, &sym);
|
||
|
||
/* If we're producing an executable, move common symbols
|
||
into bss. */
|
||
if (relocateable == false)
|
||
{
|
||
if (sym.sc == scCommon)
|
||
sym.sc = scBss;
|
||
else if (sym.sc == scSCommon)
|
||
sym.sc = scSBss;
|
||
}
|
||
|
||
if (! bfd_is_com_section (esym_ptr->symbol.section)
|
||
&& (esym_ptr->symbol.flags & BSF_DEBUGGING) == 0
|
||
&& esym_ptr->symbol.section != &bfd_und_section)
|
||
sym.value = (esym_ptr->symbol.value
|
||
+ esym_ptr->symbol.section->output_offset
|
||
+ esym_ptr->symbol.section->output_section->vma);
|
||
(*swap_sym_out) (output_bfd, &sym, sym_out);
|
||
sym_out += external_sym_size;
|
||
}
|
||
}
|
||
|
||
/* That should have accounted for all the local symbols in
|
||
input_bfd. */
|
||
|
||
/* Copy the information that does not need swapping. */
|
||
memcpy (output_ecoff->line + output_symhdr->cbLine,
|
||
input_ecoff->line,
|
||
input_symhdr->cbLine * sizeof (unsigned char));
|
||
memcpy (output_ecoff->external_aux + output_symhdr->iauxMax,
|
||
input_ecoff->external_aux,
|
||
input_symhdr->iauxMax * sizeof (union aux_ext));
|
||
memcpy (output_ecoff->ss + output_symhdr->issMax,
|
||
input_ecoff->ss,
|
||
input_symhdr->issMax * sizeof (char));
|
||
|
||
/* Some of the information may need to be swapped. */
|
||
if (output_bfd->xvec->header_byteorder_big_p
|
||
== input_bfd->xvec->header_byteorder_big_p)
|
||
{
|
||
/* The two BFD's have the same endianness, so memcpy will
|
||
suffice. */
|
||
if (input_symhdr->idnMax > 0)
|
||
memcpy (((char *) output_ecoff->external_dnr
|
||
+ output_symhdr->idnMax * backend->external_dnr_size),
|
||
input_ecoff->external_dnr,
|
||
input_symhdr->idnMax * backend->external_dnr_size);
|
||
if (input_symhdr->ipdMax > 0)
|
||
memcpy (((char *) output_ecoff->external_pdr
|
||
+ output_symhdr->ipdMax * external_pdr_size),
|
||
input_ecoff->external_pdr,
|
||
input_symhdr->ipdMax * external_pdr_size);
|
||
if (input_symhdr->ioptMax > 0)
|
||
memcpy (((char *) output_ecoff->external_opt
|
||
+ output_symhdr->ioptMax * backend->external_opt_size),
|
||
input_ecoff->external_opt,
|
||
input_symhdr->ioptMax * backend->external_opt_size);
|
||
}
|
||
else
|
||
{
|
||
bfd_size_type sz;
|
||
char *in;
|
||
char *end;
|
||
char *out;
|
||
|
||
/* The two BFD's have different endianness, so we must swap
|
||
everything in and out. This code would always work, but it
|
||
would be slow in the normal case. */
|
||
sz = backend->external_dnr_size;
|
||
in = (char *) input_ecoff->external_dnr;
|
||
end = in + input_symhdr->idnMax * sz;
|
||
out = (char *) output_ecoff->external_dnr + output_symhdr->idnMax * sz;
|
||
for (; in < end; in += sz, out += sz)
|
||
{
|
||
DNR dnr;
|
||
|
||
(*backend->swap_dnr_in) (input_bfd, in, &dnr);
|
||
(*backend->swap_dnr_out) (output_bfd, &dnr, out);
|
||
}
|
||
|
||
sz = external_pdr_size;
|
||
in = (char *) input_ecoff->external_pdr;
|
||
end = in + input_symhdr->ipdMax * sz;
|
||
out = (char *) output_ecoff->external_pdr + output_symhdr->ipdMax * sz;
|
||
for (; in < end; in += sz, out += sz)
|
||
{
|
||
PDR pdr;
|
||
|
||
(*swap_pdr_in) (input_bfd, in, &pdr);
|
||
(*backend->swap_pdr_out) (output_bfd, &pdr, out);
|
||
}
|
||
|
||
sz = backend->external_opt_size;
|
||
in = (char *) input_ecoff->external_opt;
|
||
end = in + input_symhdr->ioptMax * sz;
|
||
out = (char *) output_ecoff->external_opt + output_symhdr->ioptMax * sz;
|
||
for (; in < end; in += sz, out += sz)
|
||
{
|
||
OPTR opt;
|
||
|
||
(*backend->swap_opt_in) (input_bfd, in, &opt);
|
||
(*backend->swap_opt_out) (output_bfd, &opt, out);
|
||
}
|
||
}
|
||
|
||
/* Set ifdbase so that the external symbols know how to adjust their
|
||
ifd values. */
|
||
input_ecoff->ifdbase = output_symhdr->ifdMax;
|
||
|
||
fdr_ptr = input_ecoff->fdr;
|
||
fdr_end = fdr_ptr + input_symhdr->ifdMax;
|
||
fdr_out = ((char *) output_ecoff->external_fdr
|
||
+ output_symhdr->ifdMax * external_fdr_size);
|
||
for (; fdr_ptr < fdr_end; fdr_ptr++, fdr_out += external_fdr_size)
|
||
{
|
||
FDR fdr;
|
||
unsigned long pdr_off;
|
||
|
||
fdr = *fdr_ptr;
|
||
|
||
/* The memory address for this fdr is the address for the seclet
|
||
plus the offset to this fdr within input_bfd. For some
|
||
reason the offset of the first procedure pointer is also
|
||
added in. */
|
||
if (fdr.cpd == 0)
|
||
pdr_off = 0;
|
||
else
|
||
{
|
||
PDR pdr;
|
||
|
||
(*swap_pdr_in) (input_bfd,
|
||
((char *) input_ecoff->external_pdr
|
||
+ fdr.ipdFirst * external_pdr_size),
|
||
&pdr);
|
||
pdr_off = pdr.adr;
|
||
}
|
||
fdr.adr = (bfd_get_section_vma (output_bfd, section)
|
||
+ seclet->offset
|
||
+ (fdr_ptr->adr - input_ecoff->fdr->adr)
|
||
+ pdr_off);
|
||
|
||
fdr.issBase += output_symhdr->issMax;
|
||
fdr.isymBase += output_symhdr->isymMax;
|
||
fdr.ilineBase += output_symhdr->ilineMax;
|
||
fdr.ioptBase += output_symhdr->ioptMax;
|
||
fdr.ipdFirst += output_symhdr->ipdMax;
|
||
fdr.iauxBase += output_symhdr->iauxMax;
|
||
fdr.rfdBase += output_symhdr->crfd;
|
||
|
||
/* If there are no RFD's, we are going to add some. We don't
|
||
want to adjust irfd for this, so that all the FDR's can share
|
||
the RFD's. */
|
||
if (input_symhdr->crfd == 0)
|
||
fdr.crfd = input_symhdr->ifdMax;
|
||
|
||
if (fdr.cbLine != 0)
|
||
fdr.cbLineOffset += output_symhdr->cbLine;
|
||
|
||
(*swap_fdr_out) (output_bfd, &fdr, fdr_out);
|
||
}
|
||
|
||
if (input_symhdr->crfd > 0)
|
||
{
|
||
void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
|
||
= backend->swap_rfd_in;
|
||
char *rfd_in;
|
||
char *rfd_end;
|
||
char *rfd_out;
|
||
|
||
/* Swap and adjust the RFD's. RFD's are only created by the
|
||
linker, so this will only be necessary if one of the input
|
||
files is the result of a partial link. Presumably all
|
||
necessary RFD's are present. */
|
||
rfd_in = (char *) input_ecoff->external_rfd;
|
||
rfd_end = rfd_in + input_symhdr->crfd * external_rfd_size;
|
||
rfd_out = ((char *) output_ecoff->external_rfd
|
||
+ output_symhdr->crfd * external_rfd_size);
|
||
for (;
|
||
rfd_in < rfd_end;
|
||
rfd_in += external_rfd_size, rfd_out += external_rfd_size)
|
||
{
|
||
RFDT rfd;
|
||
|
||
(*swap_rfd_in) (input_bfd, rfd_in, &rfd);
|
||
rfd += output_symhdr->ifdMax;
|
||
(*swap_rfd_out) (output_bfd, &rfd, rfd_out);
|
||
}
|
||
output_symhdr->crfd += input_symhdr->crfd;
|
||
}
|
||
else
|
||
{
|
||
char *rfd_out;
|
||
char *rfd_end;
|
||
RFDT rfd;
|
||
|
||
/* Create RFD's. Some of the debugging information includes
|
||
relative file indices. These indices are taken as indices to
|
||
the RFD table if there is one, or to the global table if
|
||
there is not. If we did not create RFD's, we would have to
|
||
parse and adjust all the debugging information which contains
|
||
file indices. */
|
||
rfd = output_symhdr->ifdMax;
|
||
rfd_out = ((char *) output_ecoff->external_rfd
|
||
+ output_symhdr->crfd * external_rfd_size);
|
||
rfd_end = rfd_out + input_symhdr->ifdMax * external_rfd_size;
|
||
for (; rfd_out < rfd_end; rfd_out += external_rfd_size, rfd++)
|
||
(*swap_rfd_out) (output_bfd, &rfd, rfd_out);
|
||
output_symhdr->crfd += input_symhdr->ifdMax;
|
||
}
|
||
|
||
/* Combine the register masks. Not all of these are used on all
|
||
targets, but that's OK because only the relevant ones will be
|
||
swapped in and out. */
|
||
{
|
||
int i;
|
||
|
||
output_ecoff->gprmask |= input_ecoff->gprmask;
|
||
output_ecoff->fprmask |= input_ecoff->fprmask;
|
||
for (i = 0; i < 4; i++)
|
||
output_ecoff->cprmask[i] |= input_ecoff->cprmask[i];
|
||
}
|
||
|
||
/* Update the counts. */
|
||
output_symhdr->ilineMax += input_symhdr->ilineMax;
|
||
output_symhdr->cbLine += input_symhdr->cbLine;
|
||
output_symhdr->idnMax += input_symhdr->idnMax;
|
||
output_symhdr->ipdMax += input_symhdr->ipdMax;
|
||
output_symhdr->isymMax += input_symhdr->isymMax;
|
||
output_symhdr->ioptMax += input_symhdr->ioptMax;
|
||
output_symhdr->iauxMax += input_symhdr->iauxMax;
|
||
output_symhdr->issMax += input_symhdr->issMax;
|
||
output_symhdr->ifdMax += input_symhdr->ifdMax;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This is the actual link routine. It makes two passes over all the
|
||
seclets. */
|
||
|
||
boolean
|
||
ecoff_bfd_seclet_link (abfd, data, relocateable)
|
||
bfd *abfd;
|
||
PTR data;
|
||
boolean relocateable;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
HDRR *symhdr;
|
||
int ipass;
|
||
register asection *o;
|
||
register bfd_seclet_type *p;
|
||
asymbol **sym_ptr_ptr;
|
||
bfd_size_type debug_align;
|
||
bfd_size_type size;
|
||
char *raw;
|
||
|
||
/* We accumulate the debugging information counts in the symbolic
|
||
header. */
|
||
symhdr = &ecoff_data (abfd)->symbolic_header;
|
||
symhdr->magic = backend->sym_magic;
|
||
/* FIXME: What should the version stamp be? */
|
||
symhdr->vstamp = 0;
|
||
symhdr->ilineMax = 0;
|
||
symhdr->cbLine = 0;
|
||
symhdr->idnMax = 0;
|
||
symhdr->ipdMax = 0;
|
||
symhdr->isymMax = 0;
|
||
symhdr->ioptMax = 0;
|
||
symhdr->iauxMax = 0;
|
||
symhdr->issMax = 0;
|
||
symhdr->issExtMax = 0;
|
||
symhdr->ifdMax = 0;
|
||
symhdr->crfd = 0;
|
||
symhdr->iextMax = 0;
|
||
|
||
/* We need to copy over the debugging symbols from each input BFD.
|
||
When we do this copying, we have to adjust the text address in
|
||
the FDR structures, so we have to know the text address used for
|
||
the input BFD. Since we only want to copy the symbols once per
|
||
input BFD, but we are going to look at each input BFD multiple
|
||
times (once for each section it provides), we arrange to always
|
||
look at the text section first. That means that when we copy the
|
||
debugging information, we always know the text address. So we
|
||
actually do each pass in two sub passes; first the text sections,
|
||
then the non-text sections. We use the output_has_begun flag to
|
||
determine whether we have copied over the debugging information
|
||
yet. */
|
||
|
||
/* Do the first pass: set the output section contents and count the
|
||
debugging information. */
|
||
ecoff_clear_output_flags (abfd);
|
||
for (ipass = 0; ipass < 2; ipass++)
|
||
{
|
||
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
|
||
{
|
||
/* If this is a fake section, just forget it. The register
|
||
information is handled in another way. */
|
||
if (strcmp (o->name, SCOMMON) == 0
|
||
|| strcmp (o->name, REGINFO) == 0)
|
||
continue;
|
||
|
||
/* For SEC_CODE sections, (flags & SEC_CODE) == 0 is false,
|
||
so they are done on pass 0. For other sections the
|
||
expression is true, so they are done on pass 1. */
|
||
if (((o->flags & SEC_CODE) == 0) != ipass)
|
||
continue;
|
||
|
||
for (p = o->seclets_head;
|
||
p != (bfd_seclet_type *) NULL;
|
||
p = p->next)
|
||
{
|
||
if (ecoff_dump_seclet (abfd, p, o, data, relocateable)
|
||
== false)
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We handle the external symbols differently. We use the ones
|
||
attached to the output_bfd. The linker will have already
|
||
determined which symbols are to be attached. Here we just
|
||
determine how much space we will need for them. */
|
||
sym_ptr_ptr = bfd_get_outsymbols (abfd);
|
||
if (sym_ptr_ptr != NULL)
|
||
{
|
||
asymbol **sym_end;
|
||
|
||
sym_end = sym_ptr_ptr + bfd_get_symcount (abfd);
|
||
for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++)
|
||
{
|
||
if (((*sym_ptr_ptr)->flags & BSF_DEBUGGING) == 0
|
||
&& ((*sym_ptr_ptr)->flags & BSF_LOCAL) == 0)
|
||
{
|
||
++symhdr->iextMax;
|
||
symhdr->issExtMax += strlen ((*sym_ptr_ptr)->name) + 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Adjust the counts so that structures are longword aligned. */
|
||
debug_align = backend->debug_align;
|
||
--debug_align;
|
||
symhdr->cbLine = (symhdr->cbLine + debug_align) &~ debug_align;
|
||
symhdr->issMax = (symhdr->issMax + debug_align) &~ debug_align;
|
||
symhdr->issExtMax = (symhdr->issExtMax + debug_align) &~ debug_align;
|
||
|
||
/* Now the counts in symhdr are the correct size for the debugging
|
||
information. We allocate the right amount of space, and reset
|
||
the counts so that the second pass can use them as indices. It
|
||
would be possible to output the debugging information directly to
|
||
the file in pass 2, rather than to build it in memory and then
|
||
write it out. Outputting to the file would require a lot of
|
||
seeks and small writes, though, and I think this approach is
|
||
faster. */
|
||
size = (symhdr->cbLine * sizeof (unsigned char)
|
||
+ symhdr->idnMax * backend->external_dnr_size
|
||
+ symhdr->ipdMax * backend->external_pdr_size
|
||
+ symhdr->isymMax * backend->external_sym_size
|
||
+ symhdr->ioptMax * backend->external_opt_size
|
||
+ symhdr->iauxMax * sizeof (union aux_ext)
|
||
+ symhdr->issMax * sizeof (char)
|
||
+ symhdr->issExtMax * sizeof (char)
|
||
+ symhdr->ifdMax * backend->external_fdr_size
|
||
+ symhdr->crfd * backend->external_rfd_size
|
||
+ symhdr->iextMax * backend->external_ext_size);
|
||
raw = (char *) bfd_alloc (abfd, size);
|
||
if (raw == (char *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
ecoff_data (abfd)->raw_size = size;
|
||
ecoff_data (abfd)->raw_syments = (PTR) raw;
|
||
|
||
/* Initialize the raw pointers. */
|
||
#define SET(field, count, type, size) \
|
||
ecoff_data (abfd)->field = (type) raw; \
|
||
raw += symhdr->count * size
|
||
|
||
SET (line, cbLine, unsigned char *, sizeof (unsigned char));
|
||
SET (external_dnr, idnMax, PTR, backend->external_dnr_size);
|
||
SET (external_pdr, ipdMax, PTR, backend->external_pdr_size);
|
||
SET (external_sym, isymMax, PTR, backend->external_sym_size);
|
||
SET (external_opt, ioptMax, PTR, backend->external_opt_size);
|
||
SET (external_aux, iauxMax, union aux_ext *, sizeof (union aux_ext));
|
||
SET (ss, issMax, char *, sizeof (char));
|
||
SET (ssext, issExtMax, char *, sizeof (char));
|
||
SET (external_fdr, ifdMax, PTR, backend->external_fdr_size);
|
||
SET (external_rfd, crfd, PTR, backend->external_rfd_size);
|
||
SET (external_ext, iextMax, PTR, backend->external_ext_size);
|
||
#undef SET
|
||
|
||
/* Reset the counts so the second pass can use them to know how far
|
||
it has gotten. */
|
||
symhdr->ilineMax = 0;
|
||
symhdr->cbLine = 0;
|
||
symhdr->idnMax = 0;
|
||
symhdr->ipdMax = 0;
|
||
symhdr->isymMax = 0;
|
||
symhdr->ioptMax = 0;
|
||
symhdr->iauxMax = 0;
|
||
symhdr->issMax = 0;
|
||
symhdr->issExtMax = 0;
|
||
symhdr->ifdMax = 0;
|
||
symhdr->crfd = 0;
|
||
symhdr->iextMax = 0;
|
||
|
||
/* Do the second pass: accumulate the debugging information. */
|
||
ecoff_clear_output_flags (abfd);
|
||
for (ipass = 0; ipass < 2; ipass++)
|
||
{
|
||
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
|
||
{
|
||
if (strcmp (o->name, SCOMMON) == 0
|
||
|| strcmp (o->name, REGINFO) == 0)
|
||
continue;
|
||
if (((o->flags & SEC_CODE) == 0) != ipass)
|
||
continue;
|
||
for (p = o->seclets_head;
|
||
p != (bfd_seclet_type *) NULL;
|
||
p = p->next)
|
||
{
|
||
if (p->type == bfd_indirect_seclet)
|
||
{
|
||
if (ecoff_get_debug (abfd, p, o, relocateable) == false)
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Put in the external symbols. */
|
||
sym_ptr_ptr = bfd_get_outsymbols (abfd);
|
||
if (sym_ptr_ptr != NULL)
|
||
{
|
||
const bfd_size_type external_ext_size = backend->external_ext_size;
|
||
void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
|
||
= backend->swap_ext_in;
|
||
void (* const swap_ext_out) PARAMS ((bfd *, const EXTR *, PTR))
|
||
= backend->swap_ext_out;
|
||
char *ssext;
|
||
char *external_ext;
|
||
|
||
ssext = ecoff_data (abfd)->ssext;
|
||
external_ext = (char *) ecoff_data (abfd)->external_ext;
|
||
for (; *sym_ptr_ptr != NULL; sym_ptr_ptr++)
|
||
{
|
||
asymbol *sym_ptr;
|
||
EXTR esym;
|
||
|
||
sym_ptr = *sym_ptr_ptr;
|
||
|
||
if ((sym_ptr->flags & BSF_DEBUGGING) != 0
|
||
|| (sym_ptr->flags & BSF_LOCAL) != 0)
|
||
continue;
|
||
|
||
/* The native pointer can be NULL for a symbol created by
|
||
the linker via ecoff_make_empty_symbol. */
|
||
if (bfd_asymbol_flavour (sym_ptr) != bfd_target_ecoff_flavour
|
||
|| ecoffsymbol (sym_ptr)->native == NULL)
|
||
{
|
||
esym.jmptbl = 0;
|
||
esym.cobol_main = 0;
|
||
esym.weakext = 0;
|
||
esym.reserved = 0;
|
||
esym.ifd = ifdNil;
|
||
/* FIXME: we can do better than this for st and sc. */
|
||
esym.asym.st = stGlobal;
|
||
esym.asym.sc = scAbs;
|
||
esym.asym.reserved = 0;
|
||
esym.asym.index = indexNil;
|
||
}
|
||
else
|
||
{
|
||
ecoff_symbol_type *ecoff_sym_ptr;
|
||
|
||
ecoff_sym_ptr = ecoffsymbol (sym_ptr);
|
||
if (ecoff_sym_ptr->local)
|
||
abort ();
|
||
(*swap_ext_in) (abfd, ecoff_sym_ptr->native, &esym);
|
||
|
||
/* If we're producing an executable, move common symbols
|
||
into bss. */
|
||
if (relocateable == false)
|
||
{
|
||
if (esym.asym.sc == scCommon)
|
||
esym.asym.sc = scBss;
|
||
else if (esym.asym.sc == scSCommon)
|
||
esym.asym.sc = scSBss;
|
||
}
|
||
|
||
/* Adjust the FDR index for the symbol by that used for
|
||
the input BFD. */
|
||
esym.ifd += ecoff_data (bfd_asymbol_bfd (sym_ptr))->ifdbase;
|
||
}
|
||
|
||
esym.asym.iss = symhdr->issExtMax;
|
||
|
||
if (bfd_is_com_section (sym_ptr->section)
|
||
|| sym_ptr->section == &bfd_und_section)
|
||
esym.asym.value = sym_ptr->value;
|
||
else
|
||
esym.asym.value = (sym_ptr->value
|
||
+ sym_ptr->section->output_offset
|
||
+ sym_ptr->section->output_section->vma);
|
||
|
||
(*swap_ext_out) (abfd, &esym, external_ext);
|
||
|
||
ecoff_set_sym_index (sym_ptr, symhdr->iextMax);
|
||
|
||
external_ext += external_ext_size;
|
||
++symhdr->iextMax;
|
||
|
||
strcpy (ssext + symhdr->issExtMax, sym_ptr->name);
|
||
symhdr->issExtMax += strlen (sym_ptr->name) + 1;
|
||
}
|
||
}
|
||
|
||
/* Adjust the counts so that structures are longword aligned. */
|
||
symhdr->cbLine = (symhdr->cbLine + debug_align) &~ debug_align;
|
||
symhdr->issMax = (symhdr->issMax + debug_align) &~ debug_align;
|
||
symhdr->issExtMax = (symhdr->issExtMax + debug_align) &~ debug_align;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set the architecture. The supported architecture is stored in the
|
||
backend pointer. We always set the architecture anyhow, since many
|
||
callers ignore the return value. */
|
||
|
||
boolean
|
||
ecoff_set_arch_mach (abfd, arch, machine)
|
||
bfd *abfd;
|
||
enum bfd_architecture arch;
|
||
unsigned long machine;
|
||
{
|
||
bfd_default_set_arch_mach (abfd, arch, machine);
|
||
return arch == ecoff_backend (abfd)->arch;
|
||
}
|
||
|
||
/* Get the size of the section headers. We do not output the .scommon
|
||
section which we created in ecoff_mkobject, nor do we output any
|
||
.reginfo section. */
|
||
|
||
int
|
||
ecoff_sizeof_headers (abfd, reloc)
|
||
bfd *abfd;
|
||
boolean reloc;
|
||
{
|
||
asection *current;
|
||
int c;
|
||
|
||
c = 0;
|
||
for (current = abfd->sections;
|
||
current != (asection *)NULL;
|
||
current = current->next)
|
||
if (strcmp (current->name, SCOMMON) != 0
|
||
&& strcmp (current->name, REGINFO) != 0)
|
||
++c;
|
||
|
||
return (bfd_coff_filhsz (abfd)
|
||
+ bfd_coff_aoutsz (abfd)
|
||
+ c * bfd_coff_scnhsz (abfd));
|
||
}
|
||
|
||
|
||
/* Get the contents of a section. This is where we handle reading the
|
||
.reginfo section, which implicitly holds the contents of an
|
||
ecoff_reginfo structure. */
|
||
|
||
boolean
|
||
ecoff_get_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
asection *section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
ecoff_data_type *tdata = ecoff_data (abfd);
|
||
struct ecoff_reginfo s;
|
||
int i;
|
||
|
||
if (strcmp (section->name, REGINFO) != 0)
|
||
return bfd_generic_get_section_contents (abfd, section, location,
|
||
offset, count);
|
||
|
||
s.gp_value = tdata->gp;
|
||
s.gprmask = tdata->gprmask;
|
||
for (i = 0; i < 4; i++)
|
||
s.cprmask[i] = tdata->cprmask[i];
|
||
s.fprmask = tdata->fprmask;
|
||
|
||
/* bfd_get_section_contents has already checked that the offset and
|
||
size is reasonable. We don't have to worry about swapping or any
|
||
such thing; the .reginfo section is defined such that the
|
||
contents are an ecoff_reginfo structure as seen on the host. */
|
||
memcpy (location, ((char *) &s) + offset, count);
|
||
return true;
|
||
}
|
||
|
||
/* Calculate the file position for each section, and set
|
||
reloc_filepos. */
|
||
|
||
static void
|
||
ecoff_compute_section_file_positions (abfd)
|
||
bfd *abfd;
|
||
{
|
||
asection *current;
|
||
file_ptr sofar;
|
||
file_ptr old_sofar;
|
||
boolean first_data;
|
||
|
||
if (bfd_get_start_address (abfd))
|
||
abfd->flags |= EXEC_P;
|
||
|
||
sofar = ecoff_sizeof_headers (abfd, false);
|
||
|
||
first_data = true;
|
||
for (current = abfd->sections;
|
||
current != (asection *) NULL;
|
||
current = current->next)
|
||
{
|
||
/* Only deal with sections which have contents */
|
||
if ((current->flags & (SEC_HAS_CONTENTS | SEC_LOAD)) == 0
|
||
|| strcmp (current->name, SCOMMON) == 0
|
||
|| strcmp (current->name, REGINFO) == 0)
|
||
continue;
|
||
|
||
/* On Ultrix, the data sections in an executable file must be
|
||
aligned to a page boundary within the file. This does not
|
||
affect the section size, though. FIXME: Does this work for
|
||
other platforms? */
|
||
if ((abfd->flags & EXEC_P) != 0
|
||
&& (abfd->flags & D_PAGED) != 0
|
||
&& first_data != false
|
||
&& (current->flags & SEC_CODE) == 0)
|
||
{
|
||
const bfd_vma round = ecoff_backend (abfd)->round;
|
||
|
||
sofar = (sofar + round - 1) &~ (round - 1);
|
||
first_data = false;
|
||
}
|
||
|
||
/* Align the sections in the file to the same boundary on
|
||
which they are aligned in virtual memory. */
|
||
old_sofar = sofar;
|
||
sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
|
||
|
||
current->filepos = sofar;
|
||
|
||
sofar += current->_raw_size;
|
||
|
||
/* make sure that this section is of the right size too */
|
||
old_sofar = sofar;
|
||
sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
|
||
current->_raw_size += sofar - old_sofar;
|
||
}
|
||
|
||
ecoff_data (abfd)->reloc_filepos = sofar;
|
||
}
|
||
|
||
/* Set the contents of a section. This is where we handle setting the
|
||
contents of the .reginfo section, which implicitly holds a
|
||
ecoff_reginfo structure. */
|
||
|
||
boolean
|
||
ecoff_set_section_contents (abfd, section, location, offset, count)
|
||
bfd *abfd;
|
||
asection *section;
|
||
PTR location;
|
||
file_ptr offset;
|
||
bfd_size_type count;
|
||
{
|
||
if (abfd->output_has_begun == false)
|
||
ecoff_compute_section_file_positions (abfd);
|
||
|
||
if (strcmp (section->name, REGINFO) == 0)
|
||
{
|
||
ecoff_data_type *tdata = ecoff_data (abfd);
|
||
struct ecoff_reginfo s;
|
||
int i;
|
||
|
||
/* If the caller is only changing part of the structure, we must
|
||
retrieve the current information before the memcpy. */
|
||
if (offset != 0 || count != sizeof (struct ecoff_reginfo))
|
||
{
|
||
s.gp_value = tdata->gp;
|
||
s.gprmask = tdata->gprmask;
|
||
for (i = 0; i < 4; i++)
|
||
s.cprmask[i] = tdata->cprmask[i];
|
||
s.fprmask = tdata->fprmask;
|
||
}
|
||
|
||
/* bfd_set_section_contents has already checked that the offset
|
||
and size is reasonable. We don't have to worry about
|
||
swapping or any such thing; the .reginfo section is defined
|
||
such that the contents are an ecoff_reginfo structure as seen
|
||
on the host. */
|
||
memcpy (((char *) &s) + offset, location, count);
|
||
|
||
tdata->gp = s.gp_value;
|
||
tdata->gprmask = s.gprmask;
|
||
for (i = 0; i < 4; i++)
|
||
tdata->cprmask[i] = s.cprmask[i];
|
||
tdata->fprmask = s.fprmask;
|
||
|
||
return true;
|
||
|
||
}
|
||
|
||
bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
|
||
|
||
if (count != 0)
|
||
return (bfd_write (location, 1, count, abfd) == count) ? true : false;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Write out an ECOFF file. */
|
||
|
||
boolean
|
||
ecoff_write_object_contents (abfd)
|
||
bfd *abfd;
|
||
{
|
||
const struct ecoff_backend_data * const backend = ecoff_backend (abfd);
|
||
const bfd_vma round = backend->round;
|
||
const bfd_size_type filhsz = bfd_coff_filhsz (abfd);
|
||
const bfd_size_type aoutsz = bfd_coff_aoutsz (abfd);
|
||
const bfd_size_type scnhsz = bfd_coff_scnhsz (abfd);
|
||
const bfd_size_type external_hdr_size = backend->external_hdr_size;
|
||
const bfd_size_type external_reloc_size = backend->external_reloc_size;
|
||
void (* const swap_reloc_out) PARAMS ((bfd *,
|
||
const struct internal_reloc *,
|
||
PTR))
|
||
= backend->swap_reloc_out;
|
||
asection *current;
|
||
unsigned int count;
|
||
file_ptr scn_base;
|
||
file_ptr reloc_base;
|
||
file_ptr sym_base;
|
||
unsigned long reloc_size;
|
||
unsigned long text_size;
|
||
unsigned long text_start;
|
||
unsigned long data_size;
|
||
unsigned long data_start;
|
||
unsigned long bss_size;
|
||
PTR buff;
|
||
struct internal_filehdr internal_f;
|
||
struct internal_aouthdr internal_a;
|
||
int i;
|
||
|
||
bfd_error = system_call_error;
|
||
|
||
if(abfd->output_has_begun == false)
|
||
ecoff_compute_section_file_positions(abfd);
|
||
|
||
if (abfd->sections != (asection *) NULL)
|
||
scn_base = abfd->sections->filepos;
|
||
else
|
||
scn_base = 0;
|
||
reloc_base = ecoff_data (abfd)->reloc_filepos;
|
||
|
||
count = 1;
|
||
reloc_size = 0;
|
||
for (current = abfd->sections;
|
||
current != (asection *)NULL;
|
||
current = current->next)
|
||
{
|
||
if (strcmp (current->name, SCOMMON) == 0
|
||
|| strcmp (current->name, REGINFO) == 0)
|
||
continue;
|
||
current->target_index = count;
|
||
++count;
|
||
if (current->reloc_count != 0)
|
||
{
|
||
bfd_size_type relsize;
|
||
|
||
current->rel_filepos = reloc_base;
|
||
relsize = current->reloc_count * external_reloc_size;
|
||
reloc_size += relsize;
|
||
reloc_base += relsize;
|
||
}
|
||
else
|
||
current->rel_filepos = 0;
|
||
}
|
||
|
||
sym_base = reloc_base + reloc_size;
|
||
|
||
/* At least on Ultrix, the symbol table of an executable file must
|
||
be aligned to a page boundary. FIXME: Is this true on other
|
||
platforms? */
|
||
if ((abfd->flags & EXEC_P) != 0
|
||
&& (abfd->flags & D_PAGED) != 0)
|
||
sym_base = (sym_base + round - 1) &~ (round - 1);
|
||
|
||
ecoff_data (abfd)->sym_filepos = sym_base;
|
||
|
||
if ((abfd->flags & D_PAGED) != 0)
|
||
text_size = ecoff_sizeof_headers (abfd, false);
|
||
else
|
||
text_size = 0;
|
||
text_start = 0;
|
||
data_size = 0;
|
||
data_start = 0;
|
||
bss_size = 0;
|
||
|
||
/* Write section headers to the file. */
|
||
|
||
buff = (PTR) alloca (scnhsz);
|
||
internal_f.f_nscns = 0;
|
||
if (bfd_seek (abfd, (file_ptr) (filhsz + aoutsz), SEEK_SET) != 0)
|
||
return false;
|
||
for (current = abfd->sections;
|
||
current != (asection *) NULL;
|
||
current = current->next)
|
||
{
|
||
struct internal_scnhdr section;
|
||
bfd_vma vma;
|
||
|
||
if (strcmp (current->name, SCOMMON) == 0)
|
||
{
|
||
BFD_ASSERT (bfd_get_section_size_before_reloc (current) == 0
|
||
&& current->reloc_count == 0);
|
||
continue;
|
||
}
|
||
if (strcmp (current->name, REGINFO) == 0)
|
||
{
|
||
BFD_ASSERT (current->reloc_count == 0);
|
||
continue;
|
||
}
|
||
|
||
++internal_f.f_nscns;
|
||
|
||
strncpy (section.s_name, current->name, sizeof section.s_name);
|
||
|
||
/* FIXME: is this correct for shared libraries? I think it is
|
||
but I have no platform to check. Ian Lance Taylor. */
|
||
vma = bfd_get_section_vma (abfd, current);
|
||
if (strcmp (current->name, _LIB) == 0)
|
||
section.s_vaddr = 0;
|
||
else
|
||
section.s_vaddr = vma;
|
||
|
||
section.s_paddr = vma;
|
||
section.s_size = bfd_get_section_size_before_reloc (current);
|
||
|
||
/* If this section is unloadable then the scnptr will be 0. */
|
||
if ((current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
|
||
section.s_scnptr = 0;
|
||
else
|
||
section.s_scnptr = current->filepos;
|
||
section.s_relptr = current->rel_filepos;
|
||
|
||
/* FIXME: the lnnoptr of the .sbss or .sdata section of an
|
||
object file produced by the assembler is supposed to point to
|
||
information about how much room is required by objects of
|
||
various different sizes. I think this only matters if we
|
||
want the linker to compute the best size to use, or
|
||
something. I don't know what happens if the information is
|
||
not present. */
|
||
section.s_lnnoptr = 0;
|
||
|
||
section.s_nreloc = current->reloc_count;
|
||
section.s_nlnno = 0;
|
||
section.s_flags = ecoff_sec_to_styp_flags (current->name,
|
||
current->flags);
|
||
|
||
bfd_coff_swap_scnhdr_out (abfd, (PTR) §ion, buff);
|
||
if (bfd_write (buff, 1, scnhsz, abfd) != scnhsz)
|
||
return false;
|
||
|
||
if ((section.s_flags & STYP_TEXT) != 0)
|
||
{
|
||
text_size += bfd_get_section_size_before_reloc (current);
|
||
if (text_start == 0 || text_start > vma)
|
||
text_start = vma;
|
||
}
|
||
else if ((section.s_flags & STYP_RDATA) != 0
|
||
|| (section.s_flags & STYP_DATA) != 0
|
||
|| (section.s_flags & STYP_LIT8) != 0
|
||
|| (section.s_flags & STYP_LIT4) != 0
|
||
|| (section.s_flags & STYP_SDATA) != 0)
|
||
{
|
||
data_size += bfd_get_section_size_before_reloc (current);
|
||
if (data_start == 0 || data_start > vma)
|
||
data_start = vma;
|
||
}
|
||
else if ((section.s_flags & STYP_BSS) != 0
|
||
|| (section.s_flags & STYP_SBSS) != 0)
|
||
bss_size += bfd_get_section_size_before_reloc (current);
|
||
}
|
||
|
||
/* Set up the file header. */
|
||
|
||
internal_f.f_magic = ecoff_get_magic (abfd);
|
||
|
||
/* We will NOT put a fucking timestamp in the header here. Every
|
||
time you put it back, I will come in and take it out again. I'm
|
||
sorry. This field does not belong here. We fill it with a 0 so
|
||
it compares the same but is not a reasonable time. --
|
||
gnu@cygnus.com. */
|
||
internal_f.f_timdat = 0;
|
||
|
||
if (bfd_get_symcount (abfd) != 0)
|
||
{
|
||
/* The ECOFF f_nsyms field is not actually the number of
|
||
symbols, it's the size of symbolic information header. */
|
||
internal_f.f_nsyms = external_hdr_size;
|
||
internal_f.f_symptr = sym_base;
|
||
}
|
||
else
|
||
{
|
||
internal_f.f_nsyms = 0;
|
||
internal_f.f_symptr = 0;
|
||
}
|
||
|
||
internal_f.f_opthdr = aoutsz;
|
||
|
||
internal_f.f_flags = F_LNNO;
|
||
if (reloc_size == 0)
|
||
internal_f.f_flags |= F_RELFLG;
|
||
if (bfd_get_symcount (abfd) == 0)
|
||
internal_f.f_flags |= F_LSYMS;
|
||
if (abfd->flags & EXEC_P)
|
||
internal_f.f_flags |= F_EXEC;
|
||
|
||
if (! abfd->xvec->byteorder_big_p)
|
||
internal_f.f_flags |= F_AR32WR;
|
||
else
|
||
internal_f.f_flags |= F_AR32W;
|
||
|
||
/* Set up the ``optional'' header. */
|
||
if ((abfd->flags & D_PAGED) != 0)
|
||
internal_a.magic = ECOFF_AOUT_ZMAGIC;
|
||
else
|
||
internal_a.magic = ECOFF_AOUT_OMAGIC;
|
||
|
||
/* FIXME: This is what Ultrix puts in, and it makes the Ultrix
|
||
linker happy. But, is it right? */
|
||
internal_a.vstamp = 0x20a;
|
||
|
||
/* At least on Ultrix, these have to be rounded to page boundaries.
|
||
FIXME: Is this true on other platforms? */
|
||
if ((abfd->flags & D_PAGED) != 0)
|
||
{
|
||
internal_a.tsize = (text_size + round - 1) &~ (round - 1);
|
||
internal_a.text_start = text_start &~ (round - 1);
|
||
internal_a.dsize = (data_size + round - 1) &~ (round - 1);
|
||
internal_a.data_start = data_start &~ (round - 1);
|
||
}
|
||
else
|
||
{
|
||
internal_a.tsize = text_size;
|
||
internal_a.text_start = text_start;
|
||
internal_a.dsize = data_size;
|
||
internal_a.data_start = data_start;
|
||
}
|
||
|
||
/* On Ultrix, the initial portions of the .sbss and .bss segments
|
||
are at the end of the data section. The bsize field in the
|
||
optional header records how many bss bytes are required beyond
|
||
those in the data section. The value is not rounded to a page
|
||
boundary. */
|
||
if (bss_size < internal_a.dsize - data_size)
|
||
bss_size = 0;
|
||
else
|
||
bss_size -= internal_a.dsize - data_size;
|
||
internal_a.bsize = bss_size;
|
||
internal_a.bss_start = internal_a.data_start + internal_a.dsize;
|
||
|
||
internal_a.entry = bfd_get_start_address (abfd);
|
||
|
||
internal_a.gp_value = ecoff_data (abfd)->gp;
|
||
|
||
internal_a.gprmask = ecoff_data (abfd)->gprmask;
|
||
internal_a.fprmask = ecoff_data (abfd)->fprmask;
|
||
for (i = 0; i < 4; i++)
|
||
internal_a.cprmask[i] = ecoff_data (abfd)->cprmask[i];
|
||
|
||
/* Write out the file header and the optional header. */
|
||
|
||
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
|
||
return false;
|
||
|
||
buff = (PTR) alloca (filhsz);
|
||
bfd_coff_swap_filehdr_out (abfd, (PTR) &internal_f, buff);
|
||
if (bfd_write (buff, 1, filhsz, abfd) != filhsz)
|
||
return false;
|
||
|
||
buff = (PTR) alloca (aoutsz);
|
||
bfd_coff_swap_aouthdr_out (abfd, (PTR) &internal_a, buff);
|
||
if (bfd_write (buff, 1, aoutsz, abfd) != aoutsz)
|
||
return false;
|
||
|
||
/* Write out the relocs. */
|
||
for (current = abfd->sections;
|
||
current != (asection *) NULL;
|
||
current = current->next)
|
||
{
|
||
arelent **reloc_ptr_ptr;
|
||
arelent **reloc_end;
|
||
char *out_ptr;
|
||
|
||
if (current->reloc_count == 0)
|
||
continue;
|
||
|
||
buff = bfd_alloc (abfd, current->reloc_count * external_reloc_size);
|
||
if (buff == NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
|
||
reloc_ptr_ptr = current->orelocation;
|
||
reloc_end = reloc_ptr_ptr + current->reloc_count;
|
||
out_ptr = (char *) buff;
|
||
for (;
|
||
reloc_ptr_ptr < reloc_end;
|
||
reloc_ptr_ptr++, out_ptr += external_reloc_size)
|
||
{
|
||
arelent *reloc;
|
||
asymbol *sym;
|
||
struct internal_reloc in;
|
||
|
||
memset (&in, 0, sizeof in);
|
||
|
||
reloc = *reloc_ptr_ptr;
|
||
sym = *reloc->sym_ptr_ptr;
|
||
|
||
in.r_vaddr = reloc->address + bfd_get_section_vma (abfd, current);
|
||
in.r_type = reloc->howto->type;
|
||
|
||
if ((sym->flags & BSF_SECTION_SYM) == 0)
|
||
{
|
||
in.r_symndx = ecoff_get_sym_index (*reloc->sym_ptr_ptr);
|
||
in.r_extern = 1;
|
||
}
|
||
else
|
||
{
|
||
CONST char *name;
|
||
|
||
name = bfd_get_section_name (abfd, bfd_get_section (sym));
|
||
if (strcmp (name, ".text") == 0)
|
||
in.r_symndx = RELOC_SECTION_TEXT;
|
||
else if (strcmp (name, ".rdata") == 0)
|
||
in.r_symndx = RELOC_SECTION_RDATA;
|
||
else if (strcmp (name, ".data") == 0)
|
||
in.r_symndx = RELOC_SECTION_DATA;
|
||
else if (strcmp (name, ".sdata") == 0)
|
||
in.r_symndx = RELOC_SECTION_SDATA;
|
||
else if (strcmp (name, ".sbss") == 0)
|
||
in.r_symndx = RELOC_SECTION_SBSS;
|
||
else if (strcmp (name, ".bss") == 0)
|
||
in.r_symndx = RELOC_SECTION_BSS;
|
||
else if (strcmp (name, ".init") == 0)
|
||
in.r_symndx = RELOC_SECTION_INIT;
|
||
else if (strcmp (name, ".lit8") == 0)
|
||
in.r_symndx = RELOC_SECTION_LIT8;
|
||
else if (strcmp (name, ".lit4") == 0)
|
||
in.r_symndx = RELOC_SECTION_LIT4;
|
||
else
|
||
abort ();
|
||
in.r_extern = 0;
|
||
}
|
||
|
||
(*swap_reloc_out) (abfd, &in, (PTR) out_ptr);
|
||
}
|
||
|
||
if (bfd_seek (abfd, current->rel_filepos, SEEK_SET) != 0)
|
||
return false;
|
||
if (bfd_write (buff, external_reloc_size, current->reloc_count, abfd)
|
||
!= external_reloc_size * current->reloc_count)
|
||
return false;
|
||
bfd_release (abfd, buff);
|
||
}
|
||
|
||
/* Write out the symbolic debugging information. */
|
||
if (bfd_get_symcount (abfd) > 0)
|
||
{
|
||
HDRR *symhdr;
|
||
unsigned long sym_offset;
|
||
|
||
/* Set up the offsets in the symbolic header. */
|
||
symhdr = &ecoff_data (abfd)->symbolic_header;
|
||
sym_offset = ecoff_data (abfd)->sym_filepos + external_hdr_size;
|
||
|
||
#define SET(offset, size, ptr) \
|
||
if (symhdr->size == 0) \
|
||
symhdr->offset = 0; \
|
||
else \
|
||
symhdr->offset = (((char *) ecoff_data (abfd)->ptr \
|
||
- (char *) ecoff_data (abfd)->raw_syments) \
|
||
+ sym_offset);
|
||
|
||
SET (cbLineOffset, cbLine, line);
|
||
SET (cbDnOffset, idnMax, external_dnr);
|
||
SET (cbPdOffset, ipdMax, external_pdr);
|
||
SET (cbSymOffset, isymMax, external_sym);
|
||
SET (cbOptOffset, ioptMax, external_opt);
|
||
SET (cbAuxOffset, iauxMax, external_aux);
|
||
SET (cbSsOffset, issMax, ss);
|
||
SET (cbSsExtOffset, issExtMax, ssext);
|
||
SET (cbFdOffset, ifdMax, external_fdr);
|
||
SET (cbRfdOffset, crfd, external_rfd);
|
||
SET (cbExtOffset, iextMax, external_ext);
|
||
#undef SET
|
||
|
||
if (bfd_seek (abfd, (file_ptr) ecoff_data (abfd)->sym_filepos,
|
||
SEEK_SET) != 0)
|
||
return false;
|
||
buff = (PTR) alloca (external_hdr_size);
|
||
(*backend->swap_hdr_out) (abfd, &ecoff_data (abfd)->symbolic_header,
|
||
buff);
|
||
if (bfd_write (buff, 1, external_hdr_size, abfd) != external_hdr_size)
|
||
return false;
|
||
if (bfd_write ((PTR) ecoff_data (abfd)->raw_syments, 1,
|
||
ecoff_data (abfd)->raw_size, abfd)
|
||
!= ecoff_data (abfd)->raw_size)
|
||
return false;
|
||
}
|
||
else if ((abfd->flags & EXEC_P) != 0
|
||
&& (abfd->flags & D_PAGED) != 0)
|
||
{
|
||
char c;
|
||
|
||
/* A demand paged executable must occupy an even number of
|
||
pages. */
|
||
if (bfd_seek (abfd, (file_ptr) ecoff_data (abfd)->sym_filepos - 1,
|
||
SEEK_SET) != 0)
|
||
return false;
|
||
if (bfd_read (&c, 1, 1, abfd) == 0)
|
||
c = 0;
|
||
if (bfd_seek (abfd, (file_ptr) ecoff_data (abfd)->sym_filepos - 1,
|
||
SEEK_SET) != 0)
|
||
return false;
|
||
if (bfd_write (&c, 1, 1, abfd) != 1)
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Archive handling. ECOFF uses what appears to be a unique type of
|
||
archive header (which I call an armap). The byte ordering of the
|
||
armap and the contents are encoded in the name of the armap itself.
|
||
At least for now, we only support archives with the same byte
|
||
ordering in the armap and the contents.
|
||
|
||
The first four bytes in the armap are the number of symbol
|
||
definitions. This is always a power of two.
|
||
|
||
This is followed by the symbol definitions. Each symbol definition
|
||
occupies 8 bytes. The first four bytes are the offset from the
|
||
start of the armap strings to the null-terminated string naming
|
||
this symbol. The second four bytes are the file offset to the
|
||
archive member which defines this symbol. If the second four bytes
|
||
are 0, then this is not actually a symbol definition, and it should
|
||
be ignored.
|
||
|
||
The symbols are hashed into the armap with a closed hashing scheme.
|
||
See the functions below for the details of the algorithm.
|
||
|
||
We could use the hash table when looking up symbols in a library.
|
||
This would require a new BFD target entry point to replace the
|
||
bfd_get_next_mapent function used by the linker.
|
||
|
||
After the symbol definitions comes four bytes holding the size of
|
||
the string table, followed by the string table itself. */
|
||
|
||
/* The name of an archive headers looks like this:
|
||
__________E[BL]E[BL]_ (with a trailing space).
|
||
The trailing space is changed to an X if the archive is changed to
|
||
indicate that the armap is out of date.
|
||
|
||
The Alpha seems to use ________64E[BL]E[BL]_. */
|
||
|
||
#define ARMAP_BIG_ENDIAN 'B'
|
||
#define ARMAP_LITTLE_ENDIAN 'L'
|
||
#define ARMAP_MARKER 'E'
|
||
#define ARMAP_START_LENGTH 10
|
||
#define ARMAP_HEADER_MARKER_INDEX 10
|
||
#define ARMAP_HEADER_ENDIAN_INDEX 11
|
||
#define ARMAP_OBJECT_MARKER_INDEX 12
|
||
#define ARMAP_OBJECT_ENDIAN_INDEX 13
|
||
#define ARMAP_END_INDEX 14
|
||
#define ARMAP_END "_ "
|
||
|
||
/* This is a magic number used in the hashing algorithm. */
|
||
#define ARMAP_HASH_MAGIC 0x9dd68ab5
|
||
|
||
/* This returns the hash value to use for a string. It also sets
|
||
*REHASH to the rehash adjustment if the first slot is taken. SIZE
|
||
is the number of entries in the hash table, and HLOG is the log
|
||
base 2 of SIZE. */
|
||
|
||
static unsigned int
|
||
ecoff_armap_hash (s, rehash, size, hlog)
|
||
CONST char *s;
|
||
unsigned int *rehash;
|
||
unsigned int size;
|
||
unsigned int hlog;
|
||
{
|
||
unsigned int hash;
|
||
|
||
hash = *s++;
|
||
while (*s != '\0')
|
||
hash = ((hash >> 27) | (hash << 5)) + *s++;
|
||
hash *= ARMAP_HASH_MAGIC;
|
||
*rehash = (hash & (size - 1)) | 1;
|
||
return hash >> (32 - hlog);
|
||
}
|
||
|
||
/* Read in the armap. */
|
||
|
||
boolean
|
||
ecoff_slurp_armap (abfd)
|
||
bfd *abfd;
|
||
{
|
||
char nextname[17];
|
||
unsigned int i;
|
||
struct areltdata *mapdata;
|
||
bfd_size_type parsed_size;
|
||
char *raw_armap;
|
||
struct artdata *ardata;
|
||
unsigned int count;
|
||
char *raw_ptr;
|
||
struct symdef *symdef_ptr;
|
||
char *stringbase;
|
||
|
||
/* Get the name of the first element. */
|
||
i = bfd_read ((PTR) nextname, 1, 16, abfd);
|
||
if (i == 0)
|
||
return true;
|
||
if (i != 16)
|
||
return false;
|
||
|
||
bfd_seek (abfd, (file_ptr) -16, SEEK_CUR);
|
||
|
||
/* Irix 4.0.5F apparently can use either an ECOFF armap or a
|
||
standard COFF armap. We could move the ECOFF armap stuff into
|
||
bfd_slurp_armap, but that seems inappropriate since no other
|
||
target uses this format. Instead, we check directly for a COFF
|
||
armap. */
|
||
if (strncmp (nextname, "/ ", 16) == 0)
|
||
return bfd_slurp_armap (abfd);
|
||
|
||
/* See if the first element is an armap. */
|
||
if (strncmp (nextname, ecoff_backend (abfd)->armap_start,
|
||
ARMAP_START_LENGTH) != 0
|
||
|| nextname[ARMAP_HEADER_MARKER_INDEX] != ARMAP_MARKER
|
||
|| (nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN
|
||
&& nextname[ARMAP_HEADER_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN)
|
||
|| nextname[ARMAP_OBJECT_MARKER_INDEX] != ARMAP_MARKER
|
||
|| (nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_BIG_ENDIAN
|
||
&& nextname[ARMAP_OBJECT_ENDIAN_INDEX] != ARMAP_LITTLE_ENDIAN)
|
||
|| strncmp (nextname + ARMAP_END_INDEX,
|
||
ARMAP_END, sizeof ARMAP_END - 1) != 0)
|
||
{
|
||
bfd_has_map (abfd) = false;
|
||
return true;
|
||
}
|
||
|
||
/* Make sure we have the right byte ordering. */
|
||
if (((nextname[ARMAP_HEADER_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN)
|
||
^ (abfd->xvec->header_byteorder_big_p != false))
|
||
|| ((nextname[ARMAP_OBJECT_ENDIAN_INDEX] == ARMAP_BIG_ENDIAN)
|
||
^ (abfd->xvec->byteorder_big_p != false)))
|
||
{
|
||
bfd_error = wrong_format;
|
||
return false;
|
||
}
|
||
|
||
/* Read in the armap. */
|
||
ardata = bfd_ardata (abfd);
|
||
mapdata = snarf_ar_hdr (abfd);
|
||
if (mapdata == (struct areltdata *) NULL)
|
||
return false;
|
||
parsed_size = mapdata->parsed_size;
|
||
bfd_release (abfd, (PTR) mapdata);
|
||
|
||
raw_armap = (char *) bfd_alloc (abfd, parsed_size);
|
||
if (raw_armap == (char *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
|
||
if (bfd_read ((PTR) raw_armap, 1, parsed_size, abfd) != parsed_size)
|
||
{
|
||
bfd_error = malformed_archive;
|
||
bfd_release (abfd, (PTR) raw_armap);
|
||
return false;
|
||
}
|
||
|
||
count = bfd_h_get_32 (abfd, (PTR) raw_armap);
|
||
|
||
ardata->symdef_count = 0;
|
||
ardata->cache = (struct ar_cache *) NULL;
|
||
|
||
/* This code used to overlay the symdefs over the raw archive data,
|
||
but that doesn't work on a 64 bit host. */
|
||
|
||
stringbase = raw_armap + count * 8 + 8;
|
||
|
||
#ifdef CHECK_ARMAP_HASH
|
||
{
|
||
unsigned int hlog;
|
||
|
||
/* Double check that I have the hashing algorithm right by making
|
||
sure that every symbol can be looked up successfully. */
|
||
hlog = 0;
|
||
for (i = 1; i < count; i <<= 1)
|
||
hlog++;
|
||
BFD_ASSERT (i == count);
|
||
|
||
raw_ptr = raw_armap + 4;
|
||
for (i = 0; i < count; i++, raw_ptr += 8)
|
||
{
|
||
unsigned int name_offset, file_offset;
|
||
unsigned int hash, rehash, srch;
|
||
|
||
name_offset = bfd_h_get_32 (abfd, (PTR) raw_ptr);
|
||
file_offset = bfd_h_get_32 (abfd, (PTR) (raw_ptr + 4));
|
||
if (file_offset == 0)
|
||
continue;
|
||
hash = ecoff_armap_hash (stringbase + name_offset, &rehash, count,
|
||
hlog);
|
||
if (hash == i)
|
||
continue;
|
||
|
||
/* See if we can rehash to this location. */
|
||
for (srch = (hash + rehash) & (count - 1);
|
||
srch != hash && srch != i;
|
||
srch = (srch + rehash) & (count - 1))
|
||
BFD_ASSERT (bfd_h_get_32 (abfd, (PTR) (raw_armap + 8 + srch * 8))
|
||
!= 0);
|
||
BFD_ASSERT (srch == i);
|
||
}
|
||
}
|
||
|
||
#endif /* CHECK_ARMAP_HASH */
|
||
|
||
raw_ptr = raw_armap + 4;
|
||
for (i = 0; i < count; i++, raw_ptr += 8)
|
||
if (bfd_h_get_32 (abfd, (PTR) (raw_ptr + 4)) != 0)
|
||
++ardata->symdef_count;
|
||
|
||
symdef_ptr = ((struct symdef *)
|
||
bfd_alloc (abfd,
|
||
ardata->symdef_count * sizeof (struct symdef)));
|
||
ardata->symdefs = (carsym *) symdef_ptr;
|
||
|
||
raw_ptr = raw_armap + 4;
|
||
for (i = 0; i < count; i++, raw_ptr += 8)
|
||
{
|
||
unsigned int name_offset, file_offset;
|
||
|
||
file_offset = bfd_h_get_32 (abfd, (PTR) (raw_ptr + 4));
|
||
if (file_offset == 0)
|
||
continue;
|
||
name_offset = bfd_h_get_32 (abfd, (PTR) raw_ptr);
|
||
symdef_ptr->s.name = stringbase + name_offset;
|
||
symdef_ptr->file_offset = file_offset;
|
||
++symdef_ptr;
|
||
}
|
||
|
||
ardata->first_file_filepos = bfd_tell (abfd);
|
||
/* Pad to an even boundary. */
|
||
ardata->first_file_filepos += ardata->first_file_filepos % 2;
|
||
|
||
bfd_has_map (abfd) = true;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Write out an armap. */
|
||
|
||
boolean
|
||
ecoff_write_armap (abfd, elength, map, orl_count, stridx)
|
||
bfd *abfd;
|
||
unsigned int elength;
|
||
struct orl *map;
|
||
unsigned int orl_count;
|
||
int stridx;
|
||
{
|
||
unsigned int hashsize, hashlog;
|
||
unsigned int symdefsize;
|
||
int padit;
|
||
unsigned int stringsize;
|
||
unsigned int mapsize;
|
||
file_ptr firstreal;
|
||
struct ar_hdr hdr;
|
||
struct stat statbuf;
|
||
unsigned int i;
|
||
bfd_byte temp[4];
|
||
bfd_byte *hashtable;
|
||
bfd *current;
|
||
bfd *last_elt;
|
||
|
||
/* Ultrix appears to use as a hash table size the least power of two
|
||
greater than twice the number of entries. */
|
||
for (hashlog = 0; (1 << hashlog) <= 2 * orl_count; hashlog++)
|
||
;
|
||
hashsize = 1 << hashlog;
|
||
|
||
symdefsize = hashsize * 8;
|
||
padit = stridx % 2;
|
||
stringsize = stridx + padit;
|
||
|
||
/* Include 8 bytes to store symdefsize and stringsize in output. */
|
||
mapsize = symdefsize + stringsize + 8;
|
||
|
||
firstreal = SARMAG + sizeof (struct ar_hdr) + mapsize + elength;
|
||
|
||
memset ((PTR) &hdr, 0, sizeof hdr);
|
||
|
||
/* Work out the ECOFF armap name. */
|
||
strcpy (hdr.ar_name, ecoff_backend (abfd)->armap_start);
|
||
hdr.ar_name[ARMAP_HEADER_MARKER_INDEX] = ARMAP_MARKER;
|
||
hdr.ar_name[ARMAP_HEADER_ENDIAN_INDEX] =
|
||
(abfd->xvec->header_byteorder_big_p
|
||
? ARMAP_BIG_ENDIAN
|
||
: ARMAP_LITTLE_ENDIAN);
|
||
hdr.ar_name[ARMAP_OBJECT_MARKER_INDEX] = ARMAP_MARKER;
|
||
hdr.ar_name[ARMAP_OBJECT_ENDIAN_INDEX] =
|
||
abfd->xvec->byteorder_big_p ? ARMAP_BIG_ENDIAN : ARMAP_LITTLE_ENDIAN;
|
||
memcpy (hdr.ar_name + ARMAP_END_INDEX, ARMAP_END, sizeof ARMAP_END - 1);
|
||
|
||
/* Write the timestamp of the archive header to be just a little bit
|
||
later than the timestamp of the file, otherwise the linker will
|
||
complain that the index is out of date. Actually, the Ultrix
|
||
linker just checks the archive name; the GNU linker may check the
|
||
date. */
|
||
stat (abfd->filename, &statbuf);
|
||
sprintf (hdr.ar_date, "%ld", (long) (statbuf.st_mtime + 60));
|
||
|
||
/* The DECstation uses zeroes for the uid, gid and mode of the
|
||
armap. */
|
||
hdr.ar_uid[0] = '0';
|
||
hdr.ar_gid[0] = '0';
|
||
hdr.ar_mode[0] = '0';
|
||
|
||
sprintf (hdr.ar_size, "%-10d", (int) mapsize);
|
||
|
||
hdr.ar_fmag[0] = '`';
|
||
hdr.ar_fmag[1] = '\n';
|
||
|
||
/* Turn all null bytes in the header into spaces. */
|
||
for (i = 0; i < sizeof (struct ar_hdr); i++)
|
||
if (((char *)(&hdr))[i] == '\0')
|
||
(((char *)(&hdr))[i]) = ' ';
|
||
|
||
if (bfd_write ((PTR) &hdr, 1, sizeof (struct ar_hdr), abfd)
|
||
!= sizeof (struct ar_hdr))
|
||
return false;
|
||
|
||
bfd_h_put_32 (abfd, hashsize, temp);
|
||
if (bfd_write (temp, 1, 4, abfd) != 4)
|
||
return false;
|
||
|
||
hashtable = (bfd_byte *) bfd_zalloc (abfd, symdefsize);
|
||
|
||
current = abfd->archive_head;
|
||
last_elt = current;
|
||
for (i = 0; i < orl_count; i++)
|
||
{
|
||
unsigned int hash, rehash;
|
||
|
||
/* Advance firstreal to the file position of this archive
|
||
element. */
|
||
if (((bfd *) map[i].pos) != last_elt)
|
||
{
|
||
do
|
||
{
|
||
firstreal += arelt_size (current) + sizeof (struct ar_hdr);
|
||
firstreal += firstreal % 2;
|
||
current = current->next;
|
||
}
|
||
while (current != (bfd *) map[i].pos);
|
||
}
|
||
|
||
last_elt = current;
|
||
|
||
hash = ecoff_armap_hash (*map[i].name, &rehash, hashsize, hashlog);
|
||
if (bfd_h_get_32 (abfd, (PTR) (hashtable + (hash * 8) + 4)) != 0)
|
||
{
|
||
unsigned int srch;
|
||
|
||
/* The desired slot is already taken. */
|
||
for (srch = (hash + rehash) & (hashsize - 1);
|
||
srch != hash;
|
||
srch = (srch + rehash) & (hashsize - 1))
|
||
if (bfd_h_get_32 (abfd, (PTR) (hashtable + (srch * 8) + 4)) == 0)
|
||
break;
|
||
|
||
BFD_ASSERT (srch != hash);
|
||
|
||
hash = srch;
|
||
}
|
||
|
||
bfd_h_put_32 (abfd, map[i].namidx, (PTR) (hashtable + hash * 8));
|
||
bfd_h_put_32 (abfd, firstreal, (PTR) (hashtable + hash * 8 + 4));
|
||
}
|
||
|
||
if (bfd_write (hashtable, 1, symdefsize, abfd) != symdefsize)
|
||
return false;
|
||
|
||
bfd_release (abfd, hashtable);
|
||
|
||
/* Now write the strings. */
|
||
bfd_h_put_32 (abfd, stringsize, temp);
|
||
if (bfd_write (temp, 1, 4, abfd) != 4)
|
||
return false;
|
||
for (i = 0; i < orl_count; i++)
|
||
{
|
||
bfd_size_type len;
|
||
|
||
len = strlen (*map[i].name) + 1;
|
||
if (bfd_write ((PTR) (*map[i].name), 1, len, abfd) != len)
|
||
return false;
|
||
}
|
||
|
||
/* The spec sez this should be a newline. But in order to be
|
||
bug-compatible for DECstation ar we use a null. */
|
||
if (padit)
|
||
{
|
||
if (bfd_write ("\0", 1, 1, abfd) != 1)
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* See whether this BFD is an archive. If it is, read in the armap
|
||
and the extended name table. */
|
||
|
||
bfd_target *
|
||
ecoff_archive_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
char armag[SARMAG + 1];
|
||
|
||
if (bfd_read ((PTR) armag, 1, SARMAG, abfd) != SARMAG
|
||
|| strncmp (armag, ARMAG, SARMAG) != 0)
|
||
{
|
||
bfd_error = wrong_format;
|
||
return (bfd_target *) NULL;
|
||
}
|
||
|
||
/* We are setting bfd_ardata(abfd) here, but since bfd_ardata
|
||
involves a cast, we can't do it as the left operand of
|
||
assignment. */
|
||
abfd->tdata.aout_ar_data =
|
||
(struct artdata *) bfd_zalloc (abfd, sizeof (struct artdata));
|
||
|
||
if (bfd_ardata (abfd) == (struct artdata *) NULL)
|
||
{
|
||
bfd_error = no_memory;
|
||
return (bfd_target *) NULL;
|
||
}
|
||
|
||
bfd_ardata (abfd)->first_file_filepos = SARMAG;
|
||
|
||
if (ecoff_slurp_armap (abfd) == false
|
||
|| ecoff_slurp_extended_name_table (abfd) == false)
|
||
{
|
||
bfd_release (abfd, bfd_ardata (abfd));
|
||
abfd->tdata.aout_ar_data = (struct artdata *) NULL;
|
||
return (bfd_target *) NULL;
|
||
}
|
||
|
||
return abfd->xvec;
|
||
}
|