mirror of
https://github.com/darlinghq/darling-gdb.git
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e0151f38e1
to bfd_tttrue, bfd_fffalse so as not to conflict with functions. * coffswap.h (coff_swap_scnhdr_out): Remove version that was hacked for MPW C. * mpw-config.in: Set shell vars instead of pasting to makefile for each configuration, edit coffswap.h to make MPW C not choke. (i386-unknown-coff, sh-hitachi-hms): Recognize. * mpw-make.in (BFD_LIBS): Add versados.c.o. * versados.c (versados_scan): Properly cast results from bfd_alloc.
846 lines
18 KiB
C
846 lines
18 KiB
C
/* BFD back-end for VERSAdos-E objects.
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Versados is a Motorola trademark.
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Copyright 1995 Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support <sac@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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/*
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SUBSECTION
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VERSAdos-E relocateable object file format
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DESCRIPTION
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This module supports reading of VERSAdos relocateable
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object files.
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A VERSAdos file looks like contains
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o Indentification Record
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o External Symbol Definition Record
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o Object Text Recrod
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o End Record
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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 "libiberty.h"
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static boolean versados_mkobject PARAMS ((bfd *));
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static boolean versados_scan PARAMS ((bfd *));
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static const bfd_target *versados_object_p PARAMS ((bfd *));
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#define VHEADER '1'
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#define VEXTDEF '2'
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#define VOTR '3'
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#define VEND '4'
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#define ES_BASE 17 /* first symbol has esdid 17 */
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/* Per file target dependent information */
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/* one for each section */
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struct esdid
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{
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asection *section; /* ptr to bfd version */
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unsigned char *contents; /* used to build image */
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int pc;
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int relocs; /* reloc count, valid end of pass 1 */
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int donerel; /* have relocs been translated */
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};
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typedef struct versados_data_struct
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{
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int es_done; /* count of symbol index, starts at ES_BASE */
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asymbol *symbols; /* pointer to local symbols */
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char *strings; /* strings of all the above */
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int stringlen; /* len of string table (valid end of pass1) */
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int nsyms; /* number of symbols (valid end of pass1) */
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int nsecsyms; /* number of sections */
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int pass_2_done;
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struct esdid e[16]; /* per section info */
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int alert; /* to see if we're trampling */
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asymbol *rest[256 - 16]; /* per symbol info */
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}
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tdata_type;
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#define VDATA(abfd) (abfd->tdata.versados_data)
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#define EDATA(abfd, n) (abfd->tdata.versados_data->e[n])
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#define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n])
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struct ext_otr
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{
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unsigned char size;
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char type;
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char map[4];
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unsigned char esdid;
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unsigned char data[200];
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};
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struct ext_vheader
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{
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unsigned char size;
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char type; /* record type */
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char name[10]; /* module name */
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char rev; /* module rev number */
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char lang;
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char vol[4];
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char user[2];
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char cat[8];
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char fname[8];
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char ext[2];
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char time[3];
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char date[3];
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char rest[211];
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};
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struct ext_esd
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{
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unsigned char size;
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char type;
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unsigned char esd_entries[1];
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};
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#define ESD_ABS 0
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#define EST_SHRT_REL_SEC 1
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#define EST_STD_REL_SEC 2
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#define ESD_XDEF_IN_SEC 4
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#define ESD_XREF_SYM 7
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union ext_any
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{
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char size;
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struct ext_vheader header;
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struct ext_esd esd;
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struct ext_otr otr;
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};
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/* Initialize by filling in the hex conversion array. */
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/* Set up the tdata information. */
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static boolean
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versados_mkobject (abfd)
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bfd *abfd;
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{
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if (abfd->tdata.versados_data == NULL)
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{
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tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
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if (tdata == NULL)
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{
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bfd_set_error (bfd_error_no_memory);
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return false;
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}
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abfd->tdata.versados_data = tdata;
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tdata->symbols = NULL;
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VDATA(abfd)->alert = 0x12345678;
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}
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bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
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return true;
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}
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/* Report a problem in an S record file. FIXME: This probably should
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not call fprintf, but we really do need some mechanism for printing
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error messages. */
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static asymbol *
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versados_new_symbol (abfd, snum, name, val, sec)
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bfd *abfd;
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int snum;
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const char *name;
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bfd_vma val;
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asection *sec;
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{
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asymbol *n = VDATA (abfd)->symbols + snum;
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n->name = name;
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n->value = val;
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n->section = sec;
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n->the_bfd = abfd;
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n->flags = 0;
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return n;
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}
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static int
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get_record (abfd, ptr)
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bfd *abfd;
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union ext_any *ptr;
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{
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bfd_read (&ptr->size, 1, 1, abfd);
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if (bfd_read ((char *) ptr + 1, 1, ptr->size, abfd) != ptr->size)
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return 0;
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return 1;
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}
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int
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get_4 (pp)
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unsigned char **pp;
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{
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unsigned char *p = *pp;
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*pp += 4;
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return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
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}
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void
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get_10 (pp, name)
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unsigned char **pp;
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char *name;
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{
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char *p = (char *) *pp;
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int len = 10;
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*pp += len;
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while (*p != ' '
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&& len)
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{
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*name++ = *p++;
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len--;
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}
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*name = 0;
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}
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static char *
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new_symbol_string (abfd, name)
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bfd *abfd;
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char *name;
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{
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char *n = VDATA (abfd)->strings;
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strcpy (VDATA (abfd)->strings, name);
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VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1;
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return n;
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}
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static void
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process_esd (abfd, esd, pass)
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bfd *abfd;
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struct ext_esd *esd;
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int pass;
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{
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/* Read through the ext def for the est entries */
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int togo = esd->size - 2;
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bfd_vma size;
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bfd_vma start;
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asection *sec;
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char name[11];
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unsigned char *ptr = esd->esd_entries;
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unsigned char *end = ptr + togo;
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while (ptr < end)
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{
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int scn = *ptr & 0xf;
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int typ = (*ptr >> 4) & 0xf;
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/* Declare this section */
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sprintf (name, "%d", scn);
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sec = bfd_make_section_old_way (abfd, strdup (name));
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sec->target_index = scn;
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EDATA (abfd, scn).section = sec;
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ptr++;
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switch (typ)
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{
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default:
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abort ();
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case ESD_XREF_SYM:
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{
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int snum = VDATA (abfd)->nsyms++;
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get_10 (&ptr, name);
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if (pass == 1)
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{
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VDATA (abfd)->stringlen += strlen (name) + 1;
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}
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else
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{
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int esidx;
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asymbol *s;
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char *n = new_symbol_string (abfd, name);
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s = versados_new_symbol (abfd, snum, n, 0,
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&bfd_und_section, scn);
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esidx = VDATA (abfd)->es_done++;
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RDATA (abfd, esidx - ES_BASE) = s;
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}
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}
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break;
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case ESD_ABS:
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size = get_4 (&ptr);
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start = get_4 (&ptr);
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break;
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case EST_STD_REL_SEC:
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case EST_SHRT_REL_SEC:
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{
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sec->_raw_size = get_4 (&ptr);
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sec->flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
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}
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break;
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case ESD_XDEF_IN_SEC:
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{
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int snum = VDATA (abfd)->nsyms++;
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long val;
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get_10 (&ptr, name);
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val = get_4 (&ptr);
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if (pass == 1)
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{
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/* Just remember the symbol */
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VDATA (abfd)->stringlen += strlen (name) + 1;
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}
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else
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{
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asymbol *s;
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char *n = new_symbol_string (abfd, name);
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s = versados_new_symbol (abfd, snum, n, val, sec, scn);
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s->flags |= BSF_GLOBAL;
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}
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}
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break;
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}
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}
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}
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#define R_RELWORD 1
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#define R_RELLONG 2
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#define R_RELWORD_NEG 3
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#define R_RELLONG_NEG 4
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reloc_howto_type versados_howto_table[] =
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{
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HOWTO (R_RELWORD, 0, 1, 16, false,
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0, complain_overflow_bitfield, 0,
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"+v16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_RELLONG, 0, 2, 32, false,
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0, complain_overflow_bitfield, 0,
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"+v32", true, 0xffffffff, 0xffffffff, false),
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HOWTO (R_RELWORD_NEG, 0, -1, 16, false,
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0, complain_overflow_bitfield, 0,
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"-v16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_RELLONG_NEG, 0, -2, 32, false,
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0, complain_overflow_bitfield, 0,
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"-v32", true, 0xffffffff, 0xffffffff, false),
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};
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static void
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process_otr (abfd, otr, pass)
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bfd *abfd;
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struct ext_otr *otr;
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int pass;
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{
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unsigned long shift;
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long val;
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unsigned char *srcp = otr->data;
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unsigned char *endp = (unsigned char *) otr + otr->size;
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unsigned int bits = (otr->map[0] << 24)
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| (otr->map[1] << 16)
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| (otr->map[2] << 8)
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| (otr->map[3] << 0);
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unsigned char *contents = EDATA (abfd, otr->esdid - 1).contents;
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int dst_idx = EDATA (abfd, otr->esdid - 1).pc;
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for (shift = (1 << 31); srcp < endp; shift >>= 1)
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{
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if (bits & shift)
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{
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int flag = *srcp++;
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int esdids = (flag >> 5) & 3;
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int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
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int offsetlen = flag & 7;
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int j;
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for (j = 0; j < esdids; j++)
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{
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int esdid = *srcp++;
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/* don't process zero esdids */
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if (esdid)
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{
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int rn = EDATA (abfd, otr->esdid - 1).relocs++;
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if (pass == 1)
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{
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/* this is the first pass over the data,
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just remember that we need a reloc */
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}
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else
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{
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arelent *n =
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EDATA (abfd, otr->esdid - 1).section->relocation + rn;
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n->address = dst_idx;
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n->sym_ptr_ptr = (asymbol **) esdid;
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n->addend = 0;
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n->howto
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= versados_howto_table
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+ ((j & 1) * 2)
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+ (sizeinwords - 1);
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}
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}
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}
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if (offsetlen)
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{
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/* MSB is sign extended */
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val = srcp[0] | ((srcp[0] & 0x80) ? ~0xff : 0);
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for (j = 1; j < offsetlen; j++)
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{
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val = val << 8;
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val |= srcp[j];
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}
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srcp += offsetlen;
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}
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else
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val = 0;
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/* Insert addend into stream */
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if (pass == 2)
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switch (sizeinwords)
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{
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case 2:
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contents[dst_idx++] = val >> 24;
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contents[dst_idx++] = val >> 16;
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/* fall through */
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case 1:
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contents[dst_idx++] = val >> 8;
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contents[dst_idx++] = val >> 0;
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break;
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}
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}
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else
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{
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if (pass == 2)
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{
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/* absolute code, comes in 16 bit lumps */
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contents[dst_idx] = srcp[0];
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contents[dst_idx + 1] = srcp[1];
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}
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dst_idx += 2;
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srcp += 2;
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}
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}
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EDATA (abfd, otr->esdid - 1).pc = dst_idx;
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}
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static boolean
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versados_scan (abfd)
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bfd *abfd;
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{
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int loop = 1;
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int i;
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int j;
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while (loop)
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{
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union ext_any any;
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if (!get_record (abfd, &any))
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return true;
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switch (any.header.type)
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{
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case VHEADER:
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break;
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case VEND:
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loop = 0;
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break;
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case VEXTDEF:
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process_esd (abfd, &any.esd, 1);
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break;
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case VOTR:
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process_otr (abfd, &any.otr, 1);
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break;
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}
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}
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/* Now allocate space for the relocs and sections */
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for (i = 0; i < 16; i++)
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{
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struct esdid *esdid = &EDATA (abfd, i);
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if (esdid->section)
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{
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esdid->section->relocation
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= (arelent *) bfd_alloc (abfd, sizeof (arelent) * esdid->relocs);
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esdid->contents
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= (unsigned char *) bfd_alloc (abfd, esdid->section->_raw_size);
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esdid->pc = 0;
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esdid->section->reloc_count = esdid->relocs;
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if (esdid->relocs)
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esdid->section->flags |= SEC_RELOC;
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esdid->relocs = 0;
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/* Add an entry into the symbol table for it */
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abfd->symcount++;
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VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1;
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}
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}
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VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd,
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sizeof (asymbol) * abfd->symcount);
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VDATA (abfd)->strings = bfd_alloc (abfd, VDATA (abfd)->stringlen);
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abfd->symcount = VDATA (abfd)->nsyms;
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/* Actually fill in the section symbols */
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for (j = 0, i = 0; i < 16; i++)
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{
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struct esdid *esdid = &EDATA (abfd, i);
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asection *sec = esdid->section;
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if (sec)
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{
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asymbol *s = VDATA (abfd)->symbols + j;
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s->name = new_symbol_string (abfd, sec->name);
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s->section = sec;
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s->flags = BSF_LOCAL;
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s->value = 0;
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s->the_bfd = abfd;
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j++;
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}
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}
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abfd->symcount += j;
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if (abfd->symcount)
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abfd->flags |= HAS_SYMS;
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VDATA (abfd)->nsecsyms = j;
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VDATA (abfd)->nsyms = j;
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return 1;
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}
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/* Check whether an existing file is a versados file. */
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static const bfd_target *
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versados_object_p (abfd)
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bfd *abfd;
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{
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struct ext_vheader ext;
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unsigned char len;
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET))
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return NULL;
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bfd_read (&len, 1, 1, abfd);
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if (bfd_read (&ext.type, 1, len, abfd) != len
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|| ext.type != '1')
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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|
|
|
/* ok, looks like a record, build the tdata and read
|
|
in.. */
|
|
|
|
if (!versados_mkobject (abfd)
|
|
|| !versados_scan (abfd))
|
|
return NULL;
|
|
|
|
return abfd->xvec;
|
|
}
|
|
|
|
|
|
static boolean
|
|
versados_pass_2 (abfd)
|
|
bfd *abfd;
|
|
{
|
|
union ext_any any;
|
|
|
|
if (VDATA (abfd)->pass_2_done)
|
|
return 1;
|
|
|
|
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
|
|
return 0;
|
|
|
|
VDATA (abfd)->es_done = ES_BASE;
|
|
|
|
/* read records till we get to where we want to be */
|
|
|
|
while (1)
|
|
{
|
|
get_record (abfd, &any);
|
|
switch (any.header.type)
|
|
{
|
|
case VEND:
|
|
VDATA (abfd)->pass_2_done = 1;
|
|
return 1;
|
|
case VEXTDEF:
|
|
process_esd (abfd, &any.esd, 2);
|
|
break;
|
|
case VOTR:
|
|
process_otr (abfd, &any.otr, 2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static boolean
|
|
versados_get_section_contents (abfd, section, location, offset, count)
|
|
bfd *abfd;
|
|
asection *section;
|
|
PTR location;
|
|
file_ptr offset;
|
|
bfd_size_type count;
|
|
{
|
|
if (!versados_pass_2 (abfd))
|
|
return false;
|
|
|
|
memcpy (location,
|
|
EDATA (abfd, section->target_index).contents + offset,
|
|
count);
|
|
|
|
return true;
|
|
}
|
|
|
|
static boolean
|
|
versados_set_section_contents (abfd, section, location, offset, bytes_to_do)
|
|
bfd *abfd;
|
|
sec_ptr section;
|
|
PTR location;
|
|
file_ptr offset;
|
|
bfd_size_type bytes_to_do;
|
|
{
|
|
return false;
|
|
}
|
|
|
|
|
|
/*ARGSUSED */
|
|
static int
|
|
versados_sizeof_headers (abfd, exec)
|
|
bfd *abfd;
|
|
boolean exec;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static asymbol *
|
|
versados_make_empty_symbol (abfd)
|
|
bfd *abfd;
|
|
{
|
|
asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
|
|
if (new)
|
|
new->the_bfd = abfd;
|
|
return new;
|
|
}
|
|
|
|
/* Return the amount of memory needed to read the symbol table. */
|
|
|
|
static long
|
|
versados_get_symtab_upper_bound (abfd)
|
|
bfd *abfd;
|
|
{
|
|
return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
|
|
}
|
|
|
|
/* Return the symbol table. */
|
|
|
|
static long
|
|
versados_get_symtab (abfd, alocation)
|
|
bfd *abfd;
|
|
asymbol **alocation;
|
|
{
|
|
unsigned int symcount = bfd_get_symcount (abfd);
|
|
int i;
|
|
asymbol *s;
|
|
|
|
versados_pass_2 (abfd);
|
|
|
|
for (i = 0, s = VDATA (abfd)->symbols;
|
|
i < symcount;
|
|
s++, i++)
|
|
{
|
|
*alocation++ = s;
|
|
}
|
|
|
|
*alocation = NULL;
|
|
|
|
return symcount;
|
|
}
|
|
|
|
/*ARGSUSED */
|
|
void
|
|
versados_get_symbol_info (ignore_abfd, symbol, ret)
|
|
bfd *ignore_abfd;
|
|
asymbol *symbol;
|
|
symbol_info *ret;
|
|
{
|
|
bfd_symbol_info (symbol, ret);
|
|
}
|
|
|
|
/*ARGSUSED */
|
|
void
|
|
versados_print_symbol (ignore_abfd, afile, symbol, how)
|
|
bfd *ignore_abfd;
|
|
PTR afile;
|
|
asymbol *symbol;
|
|
bfd_print_symbol_type how;
|
|
{
|
|
FILE *file = (FILE *) afile;
|
|
switch (how)
|
|
{
|
|
case bfd_print_symbol_name:
|
|
fprintf (file, "%s", symbol->name);
|
|
break;
|
|
default:
|
|
bfd_print_symbol_vandf ((PTR) file, symbol);
|
|
fprintf (file, " %-5s %s",
|
|
symbol->section->name,
|
|
symbol->name);
|
|
|
|
}
|
|
}
|
|
|
|
long
|
|
versados_get_reloc_upper_bound (abfd, asect)
|
|
bfd *abfd;
|
|
sec_ptr asect;
|
|
{
|
|
return (asect->reloc_count + 1) * sizeof (arelent *);
|
|
}
|
|
|
|
|
|
long
|
|
versados_canonicalize_reloc (abfd, section, relptr, symbols)
|
|
bfd *abfd;
|
|
sec_ptr section;
|
|
arelent **relptr;
|
|
asymbol **symbols;
|
|
{
|
|
int count;
|
|
arelent *src;
|
|
|
|
versados_pass_2 (abfd);
|
|
src = section->relocation;
|
|
if (!EDATA (abfd, section->target_index).donerel)
|
|
{
|
|
EDATA (abfd, section->target_index).donerel = 1;
|
|
/* translate from indexes to symptr ptrs */
|
|
for (count = 0; count < section->reloc_count; count++)
|
|
{
|
|
int esdid = (int) src[count].sym_ptr_ptr;
|
|
if (esdid < ES_BASE) /* Section relative thing */
|
|
{
|
|
src[count].sym_ptr_ptr
|
|
= EDATA (abfd, esdid - 1).section->symbol_ptr_ptr;
|
|
}
|
|
else
|
|
{
|
|
src[count].sym_ptr_ptr
|
|
= symbols + esdid - 17 + VDATA (abfd)->nsecsyms;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
for (count = 0; count < section->reloc_count; count++)
|
|
{
|
|
*relptr++ = src++;
|
|
}
|
|
*relptr = 0;
|
|
return section->reloc_count;
|
|
}
|
|
|
|
#define versados_close_and_cleanup _bfd_generic_close_and_cleanup
|
|
#define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
|
|
#define versados_new_section_hook _bfd_generic_new_section_hook
|
|
|
|
#define versados_bfd_is_local_label bfd_generic_is_local_label
|
|
#define versados_get_lineno _bfd_nosymbols_get_lineno
|
|
#define versados_find_nearest_line _bfd_nosymbols_find_nearest_line
|
|
#define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
|
|
|
|
#define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
|
|
|
|
#define versados_set_arch_mach bfd_default_set_arch_mach
|
|
|
|
#define versados_bfd_get_relocated_section_contents \
|
|
bfd_generic_get_relocated_section_contents
|
|
#define versados_bfd_relax_section bfd_generic_relax_section
|
|
#define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
|
|
#define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols
|
|
#define versados_bfd_final_link _bfd_generic_final_link
|
|
#define versados_bfd_link_split_section _bfd_generic_link_split_section
|
|
|
|
const bfd_target versados_vec =
|
|
{
|
|
"versados", /* name */
|
|
bfd_target_versados_flavour,
|
|
true, /* target byte order */
|
|
true, /* target headers byte order */
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
|
(SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
|
|
| SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
0, /* leading underscore */
|
|
' ', /* ar_pad_char */
|
|
16, /* ar_max_namelen */
|
|
1, /* minimum alignment */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
{
|
|
_bfd_dummy_target,
|
|
versados_object_p, /* bfd_check_format */
|
|
_bfd_dummy_target,
|
|
_bfd_dummy_target,
|
|
},
|
|
{
|
|
bfd_false,
|
|
versados_mkobject,
|
|
_bfd_generic_mkarchive,
|
|
bfd_false,
|
|
},
|
|
{ /* bfd_write_contents */
|
|
bfd_false,
|
|
bfd_false,
|
|
_bfd_write_archive_contents,
|
|
bfd_false,
|
|
},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (versados),
|
|
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
|
|
BFD_JUMP_TABLE_SYMBOLS (versados),
|
|
BFD_JUMP_TABLE_RELOCS (versados),
|
|
BFD_JUMP_TABLE_WRITE (versados),
|
|
BFD_JUMP_TABLE_LINK (versados),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
(PTR) 0
|
|
};
|