1322 lines
34 KiB
C
1322 lines
34 KiB
C
/* bfd backend for oasys objects.
|
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support <steve@cygnus.com>.
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This file is part of BFD, the Binary File Descriptor library.
|
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|
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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
|
||
the Free Software Foundation; either version 2 of the License, or
|
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(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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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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/* $Id$ */
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#define UNDERSCORE_HACK 1
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#include <ansidecl.h>
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||
#include <sysdep.h>
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#include "bfd.h"
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#include "libbfd.h"
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||
#include "oasys.h"
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#include "liboasys.h"
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||
|
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/* Define offsetof for those systems which lack it */
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#ifndef offsetof
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#define offsetof(type, identifier) (size_t) &(((type *) 0)->identifier)
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#endif
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/* Read in all the section data and relocation stuff too */
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PROTO(static boolean,oasys_slurp_section_data,(bfd *CONST abfd));
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||
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static void
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DEFUN(oasys_read_record,(abfd, record),
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bfd *CONST abfd AND
|
||
oasys_record_union_type *record)
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||
{
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||
|
||
bfd_read((PTR)record, 1, sizeof(record->header), abfd);
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||
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if ((size_t) record->header.length <= (size_t) sizeof (record->header))
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return;
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bfd_read((PTR)(((char *)record )+ sizeof(record->header)),
|
||
1, record->header.length - sizeof(record->header),
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||
abfd);
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||
}
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static size_t
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||
DEFUN(oasys_string_length,(record),
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||
oasys_record_union_type *record)
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||
{
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||
return record->header.length
|
||
- ((char *)record->symbol.name - (char *)record);
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||
}
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/*****************************************************************************/
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||
/*
|
||
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Slurp the symbol table by reading in all the records at the start file
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till we get to the first section record.
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||
We'll sort the symbolss into two lists, defined and undefined. The
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undefined symbols will be placed into the table according to their
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refno.
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We do this by placing all undefined symbols at the front of the table
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moving in, and the defined symbols at the end of the table moving back.
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*/
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static boolean
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DEFUN(oasys_slurp_symbol_table,(abfd),
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bfd * CONST abfd)
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{
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oasys_record_union_type record;
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oasys_data_type *data = oasys_data(abfd);
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boolean loop = true;
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asymbol *dest_defined;
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asymbol *dest;
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char *string_ptr;
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if (data->symbols != (asymbol *)NULL) {
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return true;
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}
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/* Buy enough memory for all the symbols and all the names */
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data->symbols =
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(asymbol *)bfd_alloc(abfd, sizeof(asymbol) * abfd->symcount);
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#ifdef UNDERSCORE_HACK
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/* buy 1 more char for each symbol to keep the underscore in*/
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data->strings = bfd_alloc(abfd, data->symbol_string_length +
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abfd->symcount);
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#else
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data->strings = bfd_alloc(abfd, data->symbol_string_length);
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#endif
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dest_defined = data->symbols + abfd->symcount -1;
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string_ptr = data->strings;
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bfd_seek(abfd, (file_ptr)0, SEEK_SET);
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while (loop) {
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oasys_read_record(abfd, &record);
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switch (record.header.type) {
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case oasys_record_is_header_enum:
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break;
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case oasys_record_is_local_enum:
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case oasys_record_is_symbol_enum:
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{
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int flag = record.header.type == oasys_record_is_local_enum ?
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(BSF_LOCAL) : (BSF_GLOBAL | BSF_EXPORT);
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size_t length = oasys_string_length(&record);
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switch (record.symbol.relb & RELOCATION_TYPE_BITS) {
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case RELOCATION_TYPE_ABS:
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dest = dest_defined--;
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dest->section = 0;
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dest->flags = BSF_ABSOLUTE | flag;
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break;
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case RELOCATION_TYPE_REL:
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dest = dest_defined--;
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dest->section =
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oasys_data(abfd)->sections[record.symbol.relb &
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RELOCATION_SECT_BITS];
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if (record.header.type == oasys_record_is_local_enum)
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{
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dest->flags = BSF_LOCAL;
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if (dest->section ==(asection *)(~0)) {
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/* It seems that sometimes internal symbols are tied up, but
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still get output, even though there is no
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section */
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dest->section = 0;
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}
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}
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else {
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dest->flags = flag;
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}
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break;
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case RELOCATION_TYPE_UND:
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dest = data->symbols + bfd_h_get_16(abfd, (bfd_byte *)&record.symbol.refno[0]);
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dest->section = (asection *)NULL;
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dest->flags = BSF_UNDEFINED;
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break;
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case RELOCATION_TYPE_COM:
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dest = dest_defined--;
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dest->name = string_ptr;
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dest->the_bfd = abfd;
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dest->section = (asection *)NULL;
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dest->flags = BSF_FORT_COMM;
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break;
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default:
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dest = dest_defined--;
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BFD_ASSERT(0);
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break;
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}
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dest->name = string_ptr;
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dest->the_bfd = abfd;
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dest->udata = (PTR)NULL;
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dest->value = bfd_h_get_32(abfd, (bfd_byte *)&record.symbol.value[0]);
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#ifdef UNDERSCORE_HACK
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if (record.symbol.name[0] != '_') {
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string_ptr[0] = '_';
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string_ptr++;
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}
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#endif
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memcpy(string_ptr, record.symbol.name, length);
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string_ptr[length] =0;
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string_ptr += length +1;
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}
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break;
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default:
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||
loop = false;
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||
}
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}
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return true;
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}
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static unsigned int
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DEFUN(oasys_get_symtab_upper_bound,(abfd),
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bfd *CONST abfd)
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{
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oasys_slurp_symbol_table (abfd);
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return (abfd->symcount+1) * (sizeof (oasys_symbol_type *));
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}
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/*
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*/
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extern bfd_target oasys_vec;
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unsigned int
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DEFUN(oasys_get_symtab,(abfd, location),
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bfd *abfd AND
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asymbol **location)
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{
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asymbol *symbase ;
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unsigned int counter ;
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if (oasys_slurp_symbol_table(abfd) == false) {
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||
return 0;
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}
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symbase = oasys_data(abfd)->symbols;
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for (counter = 0; counter < abfd->symcount; counter++) {
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*(location++) = symbase++;
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||
}
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*location = 0;
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return abfd->symcount;
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}
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/***********************************************************************
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* archive stuff
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*/
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static bfd_target *
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DEFUN(oasys_archive_p,(abfd),
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bfd *abfd)
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{
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oasys_archive_header_type header;
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oasys_extarchive_header_type header_ext;
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unsigned int i;
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file_ptr filepos;
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bfd_seek(abfd, (file_ptr) 0, false);
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bfd_read((PTR)&header_ext, 1, sizeof(header_ext), abfd);
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header.version = bfd_h_get_32(abfd, (bfd_byte *)header_ext.version);
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header.mod_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.mod_count);
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header.mod_tbl_offset = bfd_h_get_32(abfd, (bfd_byte *)header_ext.mod_tbl_offset);
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header.sym_tbl_size = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_tbl_size);
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header.sym_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_count);
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header.sym_tbl_offset = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_tbl_offset);
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header.xref_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.xref_count);
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header.xref_lst_offset = bfd_h_get_32(abfd, (bfd_byte *)header_ext.xref_lst_offset);
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/*
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There isn't a magic number in an Oasys archive, so the best we
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can do to verify reasnableness is to make sure that the values in
|
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the header are too weird
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*/
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if (header.version>10000 ||
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header.mod_count>10000 ||
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header.sym_count>100000 ||
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header.xref_count > 100000) return (bfd_target *)NULL;
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/*
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That all worked, lets buy the space for the header and read in
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the headers.
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*/
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{
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oasys_ar_data_type *ar =
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(oasys_ar_data_type*) bfd_alloc(abfd, sizeof(oasys_ar_data_type));
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oasys_module_info_type *module =
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(oasys_module_info_type*)
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bfd_alloc(abfd, sizeof(oasys_module_info_type) * header.mod_count);
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oasys_module_table_type record;
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set_tdata(abfd, ar);
|
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ar->module = module;
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ar->module_count = header.mod_count;
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filepos = header.mod_tbl_offset;
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for (i = 0; i < header.mod_count; i++) {
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bfd_seek(abfd , filepos, SEEK_SET);
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/* There are two ways of specifying the archive header */
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if (0) {
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oasys_extmodule_table_type_a_type record_ext;
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bfd_read((PTR)&record_ext, 1, sizeof(record_ext), abfd);
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record.mod_size = bfd_h_get_32(abfd, (bfd_byte *)record_ext.mod_size);
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record.file_offset = bfd_h_get_32(abfd,
|
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(bfd_byte *) record_ext.file_offset);
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record.dep_count = bfd_h_get_32(abfd, (bfd_byte *)record_ext.dep_count);
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record.depee_count = bfd_h_get_32(abfd,(bfd_byte *) record_ext.depee_count);
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record.sect_count = bfd_h_get_32(abfd, (bfd_byte *) record_ext.sect_count);
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|
||
|
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module[i].name = bfd_alloc(abfd,33);
|
||
|
||
memcpy(module[i].name, record_ext.mod_name, 33);
|
||
filepos +=
|
||
sizeof(record_ext) +
|
||
record.dep_count * 4 +
|
||
record.depee_count * 4 +
|
||
record.sect_count * 8 + 187;
|
||
}
|
||
else {
|
||
oasys_extmodule_table_type_b_type record_ext;
|
||
bfd_read((PTR)&record_ext, 1, sizeof(record_ext), abfd);
|
||
|
||
record.mod_size = bfd_h_get_32(abfd, (bfd_byte *) record_ext.mod_size);
|
||
record.file_offset = bfd_h_get_32(abfd,
|
||
(bfd_byte *)record_ext.file_offset);
|
||
|
||
record.dep_count = bfd_h_get_32(abfd, (bfd_byte *) record_ext.dep_count);
|
||
record.depee_count = bfd_h_get_32(abfd, (bfd_byte *) record_ext.depee_count);
|
||
record.sect_count = bfd_h_get_32(abfd, (bfd_byte *) record_ext.sect_count);
|
||
record.module_name_size = bfd_h_get_32(abfd, (bfd_byte *) record_ext.mod_name_length);
|
||
|
||
module[i].name = bfd_alloc(abfd,record.module_name_size + 1);
|
||
bfd_read((PTR)module[i].name, 1, record.module_name_size, abfd);
|
||
module[i].name[record.module_name_size] = 0;
|
||
filepos +=
|
||
sizeof(record_ext) +
|
||
record.dep_count * 4 +
|
||
record.module_name_size + 1;
|
||
|
||
}
|
||
|
||
|
||
module[i].size = record.mod_size;
|
||
module[i].pos = record.file_offset;
|
||
module[i].abfd = 0;
|
||
}
|
||
|
||
}
|
||
return abfd->xvec;
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(oasys_mkobject,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
oasys_data_type *oasys;
|
||
|
||
set_tdata (abfd,
|
||
(oasys_data_type*)bfd_alloc(abfd, sizeof(oasys_data_type)));
|
||
oasys = oasys_data(abfd);
|
||
return true;
|
||
}
|
||
|
||
#define MAX_SECS 16
|
||
static bfd_target *
|
||
DEFUN(oasys_object_p,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
oasys_data_type *oasys;
|
||
oasys_data_type *save = oasys_data(abfd);
|
||
boolean loop = true;
|
||
boolean had_usefull = false;
|
||
|
||
set_tdata (abfd, 0);
|
||
oasys_mkobject(abfd);
|
||
oasys = oasys_data(abfd);
|
||
memset((PTR)oasys->sections, 0xff, sizeof(oasys->sections));
|
||
|
||
/* Point to the start of the file */
|
||
bfd_seek(abfd, (file_ptr)0, SEEK_SET);
|
||
oasys->symbol_string_length = 0;
|
||
/* Inspect the records, but only keep the section info -
|
||
remember the size of the symbols
|
||
*/
|
||
oasys->first_data_record = 0;
|
||
while (loop) {
|
||
oasys_record_union_type record;
|
||
oasys_read_record(abfd, &record);
|
||
if ((size_t)record.header.length < (size_t)sizeof(record.header))
|
||
goto fail;
|
||
|
||
|
||
switch ((oasys_record_enum_type)(record.header.type)) {
|
||
case oasys_record_is_header_enum:
|
||
had_usefull = true;
|
||
break;
|
||
case oasys_record_is_symbol_enum:
|
||
case oasys_record_is_local_enum:
|
||
/* Count symbols and remember their size for a future malloc */
|
||
abfd->symcount++;
|
||
oasys->symbol_string_length += 1 + oasys_string_length(&record);
|
||
had_usefull = true;
|
||
break;
|
||
case oasys_record_is_section_enum:
|
||
{
|
||
asection *s;
|
||
char *buffer;
|
||
unsigned int section_number;
|
||
if (record.section.header.length != sizeof(record.section))
|
||
{
|
||
goto fail;
|
||
}
|
||
buffer = bfd_alloc(abfd, 3);
|
||
section_number= record.section.relb & RELOCATION_SECT_BITS;
|
||
sprintf(buffer,"%u", section_number);
|
||
s = bfd_make_section(abfd,buffer);
|
||
oasys->sections[section_number] = s;
|
||
switch (record.section.relb & RELOCATION_TYPE_BITS) {
|
||
case RELOCATION_TYPE_ABS:
|
||
case RELOCATION_TYPE_REL:
|
||
break;
|
||
case RELOCATION_TYPE_UND:
|
||
case RELOCATION_TYPE_COM:
|
||
BFD_FAIL();
|
||
}
|
||
|
||
s->size = bfd_h_get_32(abfd, (bfd_byte *) & record.section.value[0]) ;
|
||
s->vma = bfd_h_get_32(abfd, (bfd_byte *)&record.section.vma[0]);
|
||
s->flags= 0;
|
||
had_usefull = true;
|
||
}
|
||
break;
|
||
case oasys_record_is_data_enum:
|
||
oasys->first_data_record = bfd_tell(abfd) - record.header.length;
|
||
case oasys_record_is_debug_enum:
|
||
case oasys_record_is_module_enum:
|
||
case oasys_record_is_named_section_enum:
|
||
case oasys_record_is_end_enum:
|
||
if (had_usefull == false) goto fail;
|
||
loop = false;
|
||
break;
|
||
default:
|
||
goto fail;
|
||
}
|
||
}
|
||
oasys->symbols = (asymbol *)NULL;
|
||
/*
|
||
Oasys support several architectures, but I can't see a simple way
|
||
to discover which one is in a particular file - we'll guess
|
||
*/
|
||
abfd->obj_arch = bfd_arch_m68k;
|
||
abfd->obj_machine =0;
|
||
if (abfd->symcount != 0) {
|
||
abfd->flags |= HAS_SYMS;
|
||
}
|
||
|
||
/*
|
||
We don't know if a section has data until we've read it..
|
||
*/
|
||
|
||
oasys_slurp_section_data(abfd);
|
||
|
||
|
||
return abfd->xvec;
|
||
|
||
fail:
|
||
(void) bfd_release(abfd, oasys);
|
||
set_tdata (abfd, save);
|
||
return (bfd_target *)NULL;
|
||
}
|
||
|
||
|
||
static void
|
||
DEFUN(oasys_print_symbol,(ignore_abfd, afile, symbol, how),
|
||
bfd *ignore_abfd AND
|
||
PTR afile AND
|
||
asymbol *symbol AND
|
||
bfd_print_symbol_enum_type how)
|
||
{
|
||
FILE *file = (FILE *)afile;
|
||
|
||
switch (how) {
|
||
case bfd_print_symbol_name_enum:
|
||
case bfd_print_symbol_type_enum:
|
||
fprintf(file,"%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_all_enum:
|
||
{
|
||
CONST char *section_name = symbol->section == (asection *)NULL ?
|
||
"*abs" : symbol->section->name;
|
||
|
||
bfd_print_symbol_vandf((PTR)file,symbol);
|
||
|
||
fprintf(file," %-5s %s",
|
||
section_name,
|
||
symbol->name);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
/*
|
||
The howto table is build using the top two bits of a reloc byte to
|
||
index into it. The bits are PCREL,WORD/LONG
|
||
*/
|
||
static reloc_howto_type howto_table[]=
|
||
{
|
||
|
||
HOWTO( 0, 0, 1, 16, false,0, true,true,0,"abs16",true,0x0000ffff, 0x0000ffff,false),
|
||
HOWTO( 0, 0, 2, 32, false,0, true,true,0,"abs32",true,0xffffffff, 0xffffffff,false),
|
||
HOWTO( 0, 0, 1, 16, true,0, true,true,0,"pcrel16",true,0x0000ffff, 0x0000ffff,false),
|
||
HOWTO( 0, 0, 2, 32, true,0, true,true,0,"pcrel32",true,0xffffffff, 0xffffffff,false)
|
||
};
|
||
|
||
/* Read in all the section data and relocation stuff too */
|
||
static boolean
|
||
DEFUN(oasys_slurp_section_data,(abfd),
|
||
bfd *CONST abfd)
|
||
{
|
||
oasys_record_union_type record;
|
||
oasys_data_type *data = oasys_data(abfd);
|
||
boolean loop = true;
|
||
|
||
oasys_per_section_type *per ;
|
||
|
||
asection *s;
|
||
|
||
/* See if the data has been slurped already .. */
|
||
for (s = abfd->sections; s != (asection *)NULL; s= s->next) {
|
||
per = oasys_per_section(s);
|
||
if (per->initialized == true)
|
||
return true;
|
||
}
|
||
|
||
if (data->first_data_record == 0) return true;
|
||
|
||
bfd_seek(abfd, data->first_data_record, SEEK_SET);
|
||
while (loop) {
|
||
oasys_read_record(abfd, &record);
|
||
switch (record.header.type)
|
||
{
|
||
case oasys_record_is_header_enum:
|
||
break;
|
||
case oasys_record_is_data_enum:
|
||
{
|
||
|
||
uint8e_type *src = record.data.data;
|
||
uint8e_type *end_src = ((uint8e_type *)&record) +
|
||
record.header.length;
|
||
unsigned int relbit;
|
||
bfd_byte *dst_ptr ;
|
||
bfd_byte *dst_base_ptr ;
|
||
unsigned int count;
|
||
asection * section =
|
||
data->sections[record.data.relb & RELOCATION_SECT_BITS];
|
||
bfd_vma dst_offset ;
|
||
per = oasys_per_section(section);
|
||
|
||
|
||
if (per->initialized == false)
|
||
{
|
||
per->data = (bfd_byte *) bfd_zalloc(abfd, section->size);
|
||
per->reloc_tail_ptr = (oasys_reloc_type **)&(section->relocation);
|
||
per->had_vma = false;
|
||
per->initialized = true;
|
||
section->reloc_count = 0;
|
||
section->flags = SEC_ALLOC;
|
||
}
|
||
|
||
dst_offset = bfd_h_get_32(abfd, record.data.addr) ;
|
||
if (per->had_vma == false) {
|
||
/* Take the first vma we see as the base */
|
||
|
||
section->vma = dst_offset;
|
||
per->had_vma = true;
|
||
}
|
||
|
||
|
||
dst_offset -= section->vma;
|
||
|
||
|
||
dst_base_ptr = oasys_per_section(section)->data;
|
||
dst_ptr = oasys_per_section(section)->data +
|
||
dst_offset;
|
||
|
||
if (src < end_src) {
|
||
section->flags |= SEC_LOAD | SEC_HAS_CONTENTS;
|
||
}
|
||
while (src < end_src) {
|
||
uint8e_type mod_byte = *src++;
|
||
uint32_type gap = end_src - src;
|
||
|
||
count = 8;
|
||
if (mod_byte == 0 && gap >= 8) {
|
||
dst_ptr[0] = src[0];
|
||
dst_ptr[1] = src[1];
|
||
dst_ptr[2] = src[2];
|
||
dst_ptr[3] = src[3];
|
||
dst_ptr[4] = src[4];
|
||
dst_ptr[5] = src[5];
|
||
dst_ptr[6] = src[6];
|
||
dst_ptr[7] = src[7];
|
||
dst_ptr+= 8;
|
||
src += 8;
|
||
}
|
||
else {
|
||
for (relbit = 1; count-- != 0 && src < end_src; relbit <<=1)
|
||
{
|
||
if (relbit & mod_byte)
|
||
{
|
||
uint8e_type reloc = *src;
|
||
/* This item needs to be relocated */
|
||
switch (reloc & RELOCATION_TYPE_BITS) {
|
||
case RELOCATION_TYPE_ABS:
|
||
|
||
break;
|
||
|
||
case RELOCATION_TYPE_REL:
|
||
{
|
||
/* Relocate the item relative to the section */
|
||
oasys_reloc_type *r =
|
||
(oasys_reloc_type *)
|
||
bfd_alloc(abfd,
|
||
sizeof(oasys_reloc_type));
|
||
*(per->reloc_tail_ptr) = r;
|
||
per->reloc_tail_ptr = &r->next;
|
||
r->next= (oasys_reloc_type *)NULL;
|
||
/* Reference to undefined symbol */
|
||
src++;
|
||
/* There is no symbol */
|
||
r->symbol = 0;
|
||
/* Work out the howto */
|
||
r->relent.section =
|
||
data->sections[reloc & RELOCATION_SECT_BITS];
|
||
r->relent.addend = - r->relent.section->vma;
|
||
r->relent.address = dst_ptr - dst_base_ptr;
|
||
r->relent.howto = &howto_table[reloc>>6];
|
||
r->relent.sym_ptr_ptr = (asymbol **)NULL;
|
||
section->reloc_count++;
|
||
|
||
/* Fake up the data to look like it's got the -ve pc in it, this makes
|
||
it much easier to convert into other formats. This is done by
|
||
hitting the addend.
|
||
*/
|
||
if (r->relent.howto->pc_relative == true) {
|
||
r->relent.addend -= dst_ptr - dst_base_ptr;
|
||
}
|
||
|
||
|
||
}
|
||
break;
|
||
|
||
|
||
case RELOCATION_TYPE_UND:
|
||
{
|
||
oasys_reloc_type *r =
|
||
(oasys_reloc_type *)
|
||
bfd_alloc(abfd,
|
||
sizeof(oasys_reloc_type));
|
||
*(per->reloc_tail_ptr) = r;
|
||
per->reloc_tail_ptr = &r->next;
|
||
r->next= (oasys_reloc_type *)NULL;
|
||
/* Reference to undefined symbol */
|
||
src++;
|
||
/* Get symbol number */
|
||
r->symbol = (src[0]<<8) | src[1];
|
||
/* Work out the howto */
|
||
r->relent.section = (asection *)NULL;
|
||
r->relent.addend = 0;
|
||
r->relent.address = dst_ptr - dst_base_ptr;
|
||
r->relent.howto = &howto_table[reloc>>6];
|
||
r->relent.sym_ptr_ptr = (asymbol **)NULL;
|
||
section->reloc_count++;
|
||
|
||
src+=2;
|
||
/* Fake up the data to look like it's got the -ve pc in it, this makes
|
||
it much easier to convert into other formats. This is done by
|
||
hitting the addend.
|
||
*/
|
||
if (r->relent.howto->pc_relative == true) {
|
||
r->relent.addend -= dst_ptr - dst_base_ptr;
|
||
}
|
||
|
||
|
||
|
||
}
|
||
break;
|
||
case RELOCATION_TYPE_COM:
|
||
BFD_FAIL();
|
||
}
|
||
}
|
||
*dst_ptr++ = *src++;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case oasys_record_is_local_enum:
|
||
case oasys_record_is_symbol_enum:
|
||
case oasys_record_is_section_enum:
|
||
break;
|
||
default:
|
||
loop = false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
|
||
}
|
||
|
||
|
||
|
||
bfd_error_vector_type bfd_error_vector;
|
||
|
||
static boolean
|
||
DEFUN(oasys_new_section_hook,(abfd, newsect),
|
||
bfd *abfd AND
|
||
asection *newsect)
|
||
{
|
||
newsect->used_by_bfd = (PTR)
|
||
bfd_alloc(abfd, sizeof(oasys_per_section_type));
|
||
oasys_per_section( newsect)->data = (bfd_byte *)NULL;
|
||
oasys_per_section(newsect)->section = newsect;
|
||
oasys_per_section(newsect)->offset = 0;
|
||
oasys_per_section(newsect)->initialized = false;
|
||
newsect->alignment_power = 1;
|
||
/* Turn the section string into an index */
|
||
|
||
sscanf(newsect->name,"%u", &newsect->target_index);
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
static unsigned int
|
||
DEFUN(oasys_get_reloc_upper_bound, (abfd, asect),
|
||
bfd *abfd AND
|
||
sec_ptr asect)
|
||
{
|
||
oasys_slurp_section_data(abfd);
|
||
return (asect->reloc_count+1) * sizeof(arelent *);
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(oasys_get_section_contents,(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
PTR location AND
|
||
file_ptr offset AND
|
||
bfd_size_type count)
|
||
{
|
||
oasys_per_section_type *p = (oasys_per_section_type *) section->used_by_bfd;
|
||
oasys_slurp_section_data(abfd);
|
||
if (p->initialized == false)
|
||
{
|
||
(void) memset(location, 0, (int)count);
|
||
}
|
||
else
|
||
{
|
||
(void) memcpy(location,(PTR)( p->data + offset), (int)count);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
unsigned int
|
||
DEFUN(oasys_canonicalize_reloc,(abfd, section, relptr, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
arelent **relptr AND
|
||
asymbol **symbols)
|
||
{
|
||
unsigned int reloc_count = 0;
|
||
oasys_reloc_type *src = (oasys_reloc_type *)(section->relocation);
|
||
while (src != (oasys_reloc_type *)NULL) {
|
||
if (src->relent.section == (asection *)NULL)
|
||
{
|
||
src->relent.sym_ptr_ptr = symbols + src->symbol;
|
||
}
|
||
*relptr ++ = &src->relent;
|
||
src = src->next;
|
||
reloc_count++;
|
||
}
|
||
*relptr = (arelent *)NULL;
|
||
return section->reloc_count = reloc_count;
|
||
}
|
||
|
||
|
||
boolean
|
||
DEFUN(oasys_set_arch_mach, (abfd, arch, machine),
|
||
bfd *abfd AND
|
||
enum bfd_architecture arch AND
|
||
unsigned long machine)
|
||
{
|
||
abfd->obj_arch = arch;
|
||
abfd->obj_machine = machine;
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
/* Writing */
|
||
|
||
|
||
/* Calculate the checksum and write one record */
|
||
static void
|
||
DEFUN(oasys_write_record,(abfd, type, record, size),
|
||
bfd *CONST abfd AND
|
||
CONST oasys_record_enum_type type AND
|
||
oasys_record_union_type *record AND
|
||
CONST size_t size)
|
||
{
|
||
int checksum;
|
||
size_t i;
|
||
uint8e_type *ptr;
|
||
record->header.length = size;
|
||
record->header.type = type;
|
||
record->header.check_sum = 0;
|
||
record->header.fill = 0;
|
||
ptr = &record->pad[0];
|
||
checksum = 0;
|
||
for (i = 0; i < size; i++) {
|
||
checksum += *ptr++;
|
||
}
|
||
record->header.check_sum = 0xff & (- checksum);
|
||
bfd_write((PTR)record, 1, size, abfd);
|
||
}
|
||
|
||
|
||
/* Write out all the symbols */
|
||
static void
|
||
DEFUN(oasys_write_syms, (abfd),
|
||
bfd * CONST abfd)
|
||
{
|
||
unsigned int count;
|
||
asymbol **generic = bfd_get_outsymbols(abfd);
|
||
unsigned int index = 0;
|
||
for (count = 0; count < bfd_get_symcount(abfd); count++) {
|
||
|
||
oasys_symbol_record_type symbol;
|
||
asymbol * CONST g = generic[count];
|
||
|
||
CONST char *src = g->name;
|
||
char *dst = symbol.name;
|
||
unsigned int l = 0;
|
||
|
||
if (g->flags & BSF_FORT_COMM) {
|
||
symbol.relb = RELOCATION_TYPE_COM;
|
||
bfd_h_put_16(abfd, index, (uint8e_type *)(&symbol.refno[0]));
|
||
index++;
|
||
}
|
||
else if (g->flags & BSF_ABSOLUTE) {
|
||
symbol.relb = RELOCATION_TYPE_ABS;
|
||
bfd_h_put_16(abfd, 0, (uint8e_type *)(&symbol.refno[0]));
|
||
|
||
}
|
||
else if (g->flags & BSF_UNDEFINED) {
|
||
symbol.relb = RELOCATION_TYPE_UND ;
|
||
bfd_h_put_16(abfd, index, (uint8e_type *)(&symbol.refno[0]));
|
||
/* Overload the value field with the output index number */
|
||
index++;
|
||
}
|
||
else if (g->flags & BSF_DEBUGGING) {
|
||
/* throw it away */
|
||
continue;
|
||
}
|
||
else {
|
||
if (g->section == (asection *)NULL) {
|
||
/* Sometime, the oasys tools give out a symbol with illegal
|
||
bits in it, we'll output it in the same broken way */
|
||
|
||
symbol.relb = RELOCATION_TYPE_REL | 0;
|
||
}
|
||
else {
|
||
symbol.relb = RELOCATION_TYPE_REL |g->section->output_section->target_index;
|
||
}
|
||
bfd_h_put_16(abfd, 0, (uint8e_type *)(&symbol.refno[0]));
|
||
}
|
||
while (src[l]) {
|
||
dst[l] = src[l];
|
||
l++;
|
||
}
|
||
|
||
bfd_h_put_32(abfd, g->value, (bfd_byte*) symbol.value);
|
||
|
||
|
||
if (g->flags & BSF_LOCAL) {
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_local_enum,
|
||
(oasys_record_union_type *) &symbol,
|
||
offsetof(oasys_symbol_record_type, name[0]) + l);
|
||
}
|
||
else {
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_symbol_enum,
|
||
(oasys_record_union_type *) &symbol,
|
||
offsetof(oasys_symbol_record_type, name[0]) + l);
|
||
}
|
||
g->value = index-1;
|
||
}
|
||
}
|
||
|
||
|
||
/* Write a section header for each section */
|
||
static void
|
||
DEFUN(oasys_write_sections, (abfd),
|
||
bfd *CONST abfd)
|
||
{
|
||
asection *s;
|
||
static oasys_section_record_type out = {0};
|
||
|
||
for (s = abfd->sections; s != (asection *)NULL; s = s->next) {
|
||
if (!isdigit(s->name[0]))
|
||
{
|
||
bfd_error_vector.nonrepresentable_section(abfd,
|
||
s->name);
|
||
}
|
||
out.relb = RELOCATION_TYPE_REL | s->target_index;
|
||
bfd_h_put_32(abfd, s->size, (bfd_byte *) out.value);
|
||
bfd_h_put_32(abfd, s->vma, (bfd_byte *) out.vma);
|
||
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_section_enum,
|
||
(oasys_record_union_type *) &out,
|
||
sizeof(out));
|
||
}
|
||
}
|
||
|
||
static void
|
||
DEFUN(oasys_write_header, (abfd),
|
||
bfd *CONST abfd)
|
||
{
|
||
/* Create and write the header */
|
||
oasys_header_record_type r;
|
||
size_t length = strlen(abfd->filename);
|
||
if (length > (size_t)sizeof(r.module_name)) {
|
||
length = sizeof(r.module_name);
|
||
}
|
||
|
||
(void)memcpy(r.module_name,
|
||
abfd->filename,
|
||
length);
|
||
(void)memset(r.module_name + length,
|
||
' ',
|
||
sizeof(r.module_name) - length);
|
||
|
||
r.version_number = OASYS_VERSION_NUMBER;
|
||
r.rev_number = OASYS_REV_NUMBER;
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_header_enum,
|
||
(oasys_record_union_type *)&r,
|
||
offsetof(oasys_header_record_type, description[0]));
|
||
|
||
|
||
|
||
}
|
||
|
||
static void
|
||
DEFUN(oasys_write_end,(abfd),
|
||
bfd *CONST abfd)
|
||
{
|
||
oasys_end_record_type end;
|
||
uint8e_type null = 0;
|
||
end.relb = RELOCATION_TYPE_ABS;
|
||
bfd_h_put_32(abfd, abfd->start_address, (bfd_byte *)end.entry);
|
||
bfd_h_put_16(abfd, 0, (bfd_byte *)end.fill);
|
||
end.zero =0;
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_end_enum,
|
||
(oasys_record_union_type *)&end,
|
||
sizeof(end));
|
||
bfd_write((PTR)&null, 1, 1, abfd);
|
||
}
|
||
|
||
static int
|
||
DEFUN(comp,(ap, bp),
|
||
CONST PTR ap AND
|
||
CONST PTR bp)
|
||
{
|
||
arelent *a = *((arelent **)ap);
|
||
arelent *b = *((arelent **)bp);
|
||
return a->address - b->address;
|
||
}
|
||
|
||
/*
|
||
Writing data..
|
||
|
||
*/
|
||
static void
|
||
DEFUN(oasys_write_data, (abfd),
|
||
bfd *CONST abfd)
|
||
{
|
||
asection *s;
|
||
for (s = abfd->sections; s != (asection *)NULL; s = s->next) {
|
||
if (s->flags & SEC_LOAD) {
|
||
uint8e_type *raw_data = oasys_per_section(s)->data;
|
||
oasys_data_record_type processed_data;
|
||
bfd_size_type current_byte_index = 0;
|
||
unsigned int relocs_to_go = s->reloc_count;
|
||
arelent **p = s->orelocation;
|
||
if (s->reloc_count != 0) {
|
||
/* Sort the reloc records so it's easy to insert the relocs into the
|
||
data */
|
||
|
||
qsort(s->orelocation,
|
||
s->reloc_count,
|
||
sizeof(arelent **),
|
||
comp);
|
||
}
|
||
current_byte_index = 0;
|
||
processed_data.relb = s->target_index | RELOCATION_TYPE_REL;
|
||
|
||
while (current_byte_index < s->size)
|
||
{
|
||
/* Scan forwards by eight bytes or however much is left and see if
|
||
there are any relocations going on */
|
||
uint8e_type *mod = &processed_data.data[0];
|
||
uint8e_type *dst = &processed_data.data[1];
|
||
|
||
unsigned int i;
|
||
unsigned int long_length = 128;
|
||
|
||
|
||
bfd_h_put_32(abfd, s->vma + current_byte_index, processed_data.addr);
|
||
if ((size_t)(long_length + current_byte_index) > (size_t)(s->size)) {
|
||
long_length = s->size - current_byte_index;
|
||
}
|
||
while (long_length > 0 && (dst - (uint8e_type*)&processed_data < 128)) {
|
||
|
||
unsigned int length = long_length;
|
||
*mod =0;
|
||
if (length > 8)
|
||
length = 8;
|
||
|
||
for (i = 0; i < length; i++) {
|
||
if (relocs_to_go != 0) {
|
||
arelent *r = *p;
|
||
reloc_howto_type *CONST how=r->howto;
|
||
/* There is a relocation, is it for this byte ? */
|
||
if (r->address == current_byte_index) {
|
||
uint8e_type rel_byte;
|
||
p++;
|
||
relocs_to_go--;
|
||
|
||
*mod |= (1<<i);
|
||
if(how->pc_relative) {
|
||
rel_byte = 0x80;
|
||
|
||
/* Also patch the raw data so that it doesn't have
|
||
the -ve stuff any more */
|
||
if (how->size != 2) {
|
||
bfd_put_16(abfd,
|
||
bfd_get_16(abfd,raw_data) +
|
||
current_byte_index, raw_data);
|
||
}
|
||
|
||
else {
|
||
bfd_put_32(abfd,
|
||
bfd_get_32(abfd,raw_data) +
|
||
current_byte_index, raw_data);
|
||
}
|
||
}
|
||
else {
|
||
rel_byte = 0;
|
||
}
|
||
if (how->size ==2) {
|
||
rel_byte |= 0x40;
|
||
}
|
||
|
||
/* Is this a section relative relocation, or a symbol
|
||
relative relocation ? */
|
||
if (r->section != (asection*)NULL)
|
||
{
|
||
/* The relent has a section attached, so it must be section
|
||
relative */
|
||
rel_byte |= RELOCATION_TYPE_REL;
|
||
rel_byte |= r->section->output_section->target_index;
|
||
*dst++ = rel_byte;
|
||
}
|
||
else
|
||
{
|
||
asymbol *p = *(r->sym_ptr_ptr);
|
||
|
||
/* If this symbol has a section attached, then it
|
||
has already been resolved. Change from a symbol
|
||
ref to a section ref */
|
||
if(p->section != (asection *)NULL) {
|
||
rel_byte |= RELOCATION_TYPE_REL;
|
||
rel_byte |=
|
||
p->section->output_section->target_index;
|
||
*dst++ = rel_byte;
|
||
}
|
||
else {
|
||
rel_byte |= RELOCATION_TYPE_UND;
|
||
|
||
|
||
*dst++ = rel_byte;
|
||
/* Next two bytes are a symbol index - we can get
|
||
this from the symbol value which has been zapped
|
||
into the symbol index in the table when the
|
||
symbol table was written
|
||
*/
|
||
*dst++ = p->value >> 8;
|
||
*dst++ = p->value;
|
||
}
|
||
|
||
}
|
||
}
|
||
}
|
||
/* If this is coming from an unloadable section then copy
|
||
zeros */
|
||
if (raw_data == (uint8e_type *)NULL) {
|
||
*dst++ = 0;
|
||
}
|
||
else {
|
||
*dst++ = *raw_data++;
|
||
}
|
||
current_byte_index++;
|
||
}
|
||
mod = dst++;
|
||
long_length -= length;
|
||
}
|
||
|
||
oasys_write_record(abfd,
|
||
oasys_record_is_data_enum,
|
||
(oasys_record_union_type *)&processed_data,
|
||
dst - (uint8e_type*)&processed_data);
|
||
|
||
}
|
||
}
|
||
}
|
||
}
|
||
static boolean
|
||
DEFUN(oasys_write_object_contents, (abfd),
|
||
bfd * CONST abfd)
|
||
{
|
||
oasys_write_header(abfd);
|
||
oasys_write_syms(abfd);
|
||
oasys_write_sections(abfd);
|
||
oasys_write_data(abfd);
|
||
oasys_write_end(abfd);
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
|
||
/** exec and core file sections */
|
||
|
||
/* set section contents is complicated with OASYS since the format is
|
||
* not a byte image, but a record stream.
|
||
*/
|
||
static boolean
|
||
DEFUN(oasys_set_section_contents,(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
PTR location AND
|
||
file_ptr offset AND
|
||
bfd_size_type count)
|
||
{
|
||
if (count != 0) {
|
||
if (oasys_per_section(section)->data == (bfd_byte *)NULL )
|
||
{
|
||
oasys_per_section(section)->data =
|
||
(bfd_byte *)(bfd_alloc(abfd,section->size));
|
||
}
|
||
(void) memcpy((PTR)(oasys_per_section(section)->data + offset),
|
||
location,
|
||
count);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
/* Native-level interface to symbols. */
|
||
|
||
/* We read the symbols into a buffer, which is discarded when this
|
||
function exits. We read the strings into a buffer large enough to
|
||
hold them all plus all the cached symbol entries. */
|
||
|
||
static asymbol *
|
||
DEFUN(oasys_make_empty_symbol,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
|
||
oasys_symbol_type *new =
|
||
(oasys_symbol_type *)bfd_zalloc (abfd, sizeof (oasys_symbol_type));
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
|
||
}
|
||
|
||
|
||
|
||
|
||
/* User should have checked the file flags; perhaps we should return
|
||
BFD_NO_MORE_SYMBOLS if there are none? */
|
||
|
||
static bfd *
|
||
oasys_openr_next_archived_file(arch, prev)
|
||
bfd *arch;
|
||
bfd *prev;
|
||
{
|
||
oasys_ar_data_type *ar = oasys_ar_data(arch);
|
||
oasys_module_info_type *p;
|
||
/* take the next one from the arch state, or reset */
|
||
if (prev == (bfd *)NULL) {
|
||
/* Reset the index - the first two entries are bogus*/
|
||
ar->module_index = 0;
|
||
}
|
||
|
||
p = ar->module + ar->module_index;
|
||
ar->module_index++;
|
||
|
||
if (ar->module_index <= ar->module_count) {
|
||
if (p->abfd == (bfd *)NULL) {
|
||
p->abfd = _bfd_create_empty_archive_element_shell(arch);
|
||
p->abfd->origin = p->pos;
|
||
p->abfd->filename = p->name;
|
||
|
||
/* Fixup a pointer to this element for the member */
|
||
p->abfd->arelt_data = (PTR)p;
|
||
}
|
||
return p->abfd;
|
||
}
|
||
else {
|
||
bfd_error = no_more_archived_files;
|
||
return (bfd *)NULL;
|
||
}
|
||
}
|
||
|
||
static boolean
|
||
oasys_find_nearest_line(abfd,
|
||
section,
|
||
symbols,
|
||
offset,
|
||
filename_ptr,
|
||
functionname_ptr,
|
||
line_ptr)
|
||
bfd *abfd;
|
||
asection *section;
|
||
asymbol **symbols;
|
||
bfd_vma offset;
|
||
char **filename_ptr;
|
||
char **functionname_ptr;
|
||
unsigned int *line_ptr;
|
||
{
|
||
return false;
|
||
|
||
}
|
||
|
||
static int
|
||
DEFUN(oasys_generic_stat_arch_elt,(abfd, buf),
|
||
bfd *abfd AND
|
||
struct stat *buf)
|
||
{
|
||
oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data;
|
||
if (mod == (oasys_module_info_type *)NULL) {
|
||
bfd_error = invalid_operation;
|
||
return -1;
|
||
}
|
||
else {
|
||
buf->st_size = mod->size;
|
||
buf->st_mode = 0666;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
static int
|
||
DEFUN(oasys_sizeof_headers,(abfd, exec),
|
||
bfd *abfd AND
|
||
boolean exec)
|
||
{
|
||
return 0;
|
||
}
|
||
#define FOO PROTO
|
||
#define oasys_core_file_failing_command (char *(*)())(bfd_nullvoidptr)
|
||
#define oasys_core_file_failing_signal (int (*)())bfd_0
|
||
#define oasys_core_file_matches_executable_p 0
|
||
#define oasys_slurp_armap bfd_true
|
||
#define oasys_slurp_extended_name_table bfd_true
|
||
#define oasys_truncate_arname (void (*)())bfd_nullvoidptr
|
||
#define oasys_write_armap 0
|
||
#define oasys_get_lineno (struct lineno_cache_entry *(*)())bfd_nullvoidptr
|
||
#define oasys_close_and_cleanup bfd_generic_close_and_cleanup
|
||
|
||
#define oasys_bfd_debug_info_start bfd_void
|
||
#define oasys_bfd_debug_info_end bfd_void
|
||
#define oasys_bfd_debug_info_accumulate (FOO(void, (*), (bfd *, asection *)))bfd_void
|
||
|
||
|
||
/*SUPPRESS 460 */
|
||
bfd_target oasys_vec =
|
||
{
|
||
"oasys", /* name */
|
||
bfd_target_oasys_flavour_enum,
|
||
true, /* target byte order */
|
||
true, /* target headers byte order */
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
||
(SEC_CODE|SEC_DATA|SEC_ROM|SEC_HAS_CONTENTS
|
||
|SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
' ', /* ar_pad_char */
|
||
16, /* ar_max_namelen */
|
||
1, /* minimum alignment */
|
||
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
|
||
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
|
||
|
||
{_bfd_dummy_target,
|
||
oasys_object_p, /* bfd_check_format */
|
||
oasys_archive_p,
|
||
_bfd_dummy_target,
|
||
},
|
||
{ /* bfd_set_format */
|
||
bfd_false,
|
||
oasys_mkobject,
|
||
_bfd_generic_mkarchive,
|
||
bfd_false
|
||
},
|
||
{ /* bfd_write_contents */
|
||
bfd_false,
|
||
oasys_write_object_contents,
|
||
_bfd_write_archive_contents,
|
||
bfd_false,
|
||
},
|
||
JUMP_TABLE(oasys)
|
||
};
|