old-cross-binutils/bfd/oasys.c

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34 KiB
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/* bfd backend for oasys objects.
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Copyright (C) 1990-1991 Free Software Foundation, Inc.
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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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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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
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* $Id$ */
#define UNDERSCORE_HACK 1
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#include "bfd.h"
#include "sysdep.h"
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#include "libbfd.h"
#include "oasys.h"
#include "liboasys.h"
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/* XXX - FIXME. offsetof belongs in the system-specific files in
../include/sys. */
/* Define offsetof for those systems which lack it */
#ifndef offsetof
#define offsetof(type, identifier) (size_t) &(((type *) 0)->identifier)
#endif
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/* Read in all the section data and relocation stuff too */
PROTO(static boolean,oasys_slurp_section_data,(bfd *CONST abfd));
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static void
DEFUN(oasys_read_record,(abfd, record),
bfd *CONST abfd AND
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oasys_record_union_type *record)
{
bfd_read((PTR)record, 1, sizeof(record->header), abfd);
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if ((size_t) record->header.length <= (size_t) sizeof (record->header))
return;
bfd_read((PTR)(((char *)record )+ sizeof(record->header)),
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1, record->header.length - sizeof(record->header),
abfd);
}
static size_t
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DEFUN(oasys_string_length,(record),
oasys_record_union_type *record)
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{
return record->header.length
- ((char *)record->symbol.name - (char *)record);
}
/*****************************************************************************/
/*
Slurp the symbol table by reading in all the records at the start file
till we get to the first section record.
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We'll sort the symbolss into two lists, defined and undefined. The
undefined symbols will be placed into the table according to their
refno.
We do this by placing all undefined symbols at the front of the table
moving in, and the defined symbols at the end of the table moving back.
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*/
static boolean
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DEFUN(oasys_slurp_symbol_table,(abfd),
bfd * CONST abfd)
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{
oasys_record_union_type record;
oasys_data_type *data = OASYS_DATA(abfd);
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boolean loop = true;
asymbol *dest_defined;
asymbol *dest;
char *string_ptr;
if (data->symbols != (asymbol *)NULL) {
return true;
}
/* Buy enough memory for all the symbols and all the names */
data->symbols =
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(asymbol *)bfd_alloc(abfd, sizeof(asymbol) * abfd->symcount);
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#ifdef UNDERSCORE_HACK
/* 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 +
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;
string_ptr = data->strings;
bfd_seek(abfd, (file_ptr)0, SEEK_SET);
while (loop) {
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oasys_read_record(abfd, &record);
switch (record.header.type) {
case oasys_record_is_header_enum:
break;
case oasys_record_is_local_enum:
case oasys_record_is_symbol_enum:
{
int flag = record.header.type == (int)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:
dest = dest_defined--;
dest->section = &bfd_abs_section;
dest->flags = 0;
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break;
case RELOCATION_TYPE_REL:
dest = dest_defined--;
dest->section =
OASYS_DATA(abfd)->sections[record.symbol.relb &
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RELOCATION_SECT_BITS];
if (record.header.type == (int)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)) {
/* It seems that sometimes internal symbols are tied up, but
still get output, even though there is no
section */
dest->section = 0;
}
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}
else {
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dest->flags = flag;
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}
break;
case RELOCATION_TYPE_UND:
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dest = data->symbols + bfd_h_get_16(abfd, (bfd_byte *)&record.symbol.refno[0]);
dest->section = &bfd_und_section;
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break;
case RELOCATION_TYPE_COM:
dest = dest_defined--;
dest->name = string_ptr;
dest->the_bfd = abfd;
dest->section = &bfd_com_section;
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break;
default:
dest = dest_defined--;
BFD_ASSERT(0);
break;
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}
dest->name = string_ptr;
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
if (record.symbol.name[0] != '_') {
string_ptr[0] = '_';
string_ptr++;
}
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#endif
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memcpy(string_ptr, record.symbol.name, length);
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string_ptr[length] =0;
string_ptr += length +1;
}
break;
default:
loop = false;
}
}
return true;
}
static unsigned int
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DEFUN(oasys_get_symtab_upper_bound,(abfd),
bfd *CONST abfd)
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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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}
/*
*/
extern bfd_target oasys_vec;
unsigned int
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DEFUN(oasys_get_symtab,(abfd, location),
bfd *abfd AND
asymbol **location)
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{
asymbol *symbase ;
unsigned int counter ;
if (oasys_slurp_symbol_table(abfd) == false) {
return 0;
}
symbase = OASYS_DATA(abfd)->symbols;
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for (counter = 0; counter < abfd->symcount; counter++) {
*(location++) = symbase++;
}
*location = 0;
return abfd->symcount;
}
/***********************************************************************
* archive stuff
*/
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static bfd_target *
DEFUN(oasys_archive_p,(abfd),
bfd *abfd)
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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);
header.mod_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.mod_count);
header.mod_tbl_offset = bfd_h_get_32(abfd, (bfd_byte *)header_ext.mod_tbl_offset);
header.sym_tbl_size = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_tbl_size);
header.sym_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_count);
header.sym_tbl_offset = bfd_h_get_32(abfd, (bfd_byte *)header_ext.sym_tbl_offset);
header.xref_count = bfd_h_get_32(abfd, (bfd_byte *)header_ext.xref_count);
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
can do to verify reasnableness is to make sure that the values in
the header are too weird
*/
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if (header.version>10000 ||
header.mod_count>10000 ||
header.sym_count>100000 ||
header.xref_count > 100000) return (bfd_target *)NULL;
/*
1991-05-11 02:22:21 +00:00
That all worked, lets buy the space for the header and read in
the headers.
*/
{
oasys_ar_data_type *ar =
(oasys_ar_data_type*) bfd_alloc(abfd, sizeof(oasys_ar_data_type));
oasys_module_info_type *module =
(oasys_module_info_type*)
bfd_alloc(abfd, sizeof(oasys_module_info_type) * header.mod_count);
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oasys_module_table_type record;
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abfd->tdata.oasys_ar_data = ar;
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ar->module = module;
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 */
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);
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);
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module[i].name = bfd_alloc(abfd,33);
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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 {
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oasys_extmodule_table_type_b_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);
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);
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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;
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}
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module[i].size = record.mod_size;
module[i].pos = record.file_offset;
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module[i].abfd = 0;
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}
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}
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return abfd->xvec;
}
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static boolean
DEFUN(oasys_mkobject,(abfd),
bfd *abfd)
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{
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abfd->tdata.oasys_obj_data = (oasys_data_type*)bfd_alloc(abfd, sizeof(oasys_data_type));
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return true;
}
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#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);
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boolean loop = true;
boolean had_usefull = false;
abfd->tdata.oasys_obj_data = 0;
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oasys_mkobject(abfd);
oasys = OASYS_DATA(abfd);
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memset((PTR)oasys->sections, 0xff, sizeof(oasys->sections));
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/* Point to the start of the file */
bfd_seek(abfd, (file_ptr)0, SEEK_SET);
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oasys->symbol_string_length = 0;
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/* Inspect the records, but only keep the section info -
remember the size of the symbols
*/
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oasys->first_data_record = 0;
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while (loop) {
oasys_record_union_type record;
oasys_read_record(abfd, &record);
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if ((size_t)record.header.length < (size_t)sizeof(record.header))
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goto fail;
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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++;
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oasys->symbol_string_length += 1 + oasys_string_length(&record);
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had_usefull = true;
break;
case oasys_record_is_section_enum:
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{
asection *s;
char *buffer;
unsigned int section_number;
if (record.section.header.length != sizeof(record.section))
{
goto fail;
}
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buffer = bfd_alloc(abfd, 3);
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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();
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}
s->_raw_size = bfd_h_get_32(abfd, (bfd_byte *) & record.section.value[0]) ;
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s->vma = bfd_h_get_32(abfd, (bfd_byte *)&record.section.vma[0]);
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s->flags= 0;
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had_usefull = true;
}
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break;
case oasys_record_is_data_enum:
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oasys->first_data_record = bfd_tell(abfd) - record.header.length;
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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:
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if (had_usefull == false) goto fail;
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loop = false;
break;
default:
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goto fail;
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}
}
oasys->symbols = (asymbol *)NULL;
/*
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Oasys support several architectures, but I can't see a simple way
to discover which one is in a particular file - we'll guess
*/
bfd_default_set_arch_mach(abfd, bfd_arch_m68k, 0);
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if (abfd->symcount != 0) {
abfd->flags |= HAS_SYMS;
}
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/*
We don't know if a section has data until we've read it..
*/
oasys_slurp_section_data(abfd);
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return abfd->xvec;
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fail:
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(void) bfd_release(abfd, oasys);
abfd->tdata.oasys_obj_data = save;
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return (bfd_target *)NULL;
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}
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static void
DEFUN(oasys_print_symbol,(ignore_abfd, afile, symbol, how),
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bfd *ignore_abfd AND
PTR afile AND
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asymbol *symbol AND
bfd_print_symbol_type how)
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{
FILE *file = (FILE *)afile;
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switch (how) {
case bfd_print_symbol_name:
case bfd_print_symbol_more:
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fprintf(file,"%s", symbol->name);
break;
case bfd_print_symbol_all:
case bfd_print_symbol_nm:
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{
CONST char *section_name = symbol->section == (asection *)NULL ?
(CONST char *) "*abs" : symbol->section->name;
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bfd_print_symbol_vandf((PTR)file,symbol);
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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)
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};
/* Read in all the section data and relocation stuff too */
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static boolean
DEFUN(oasys_slurp_section_data,(abfd),
bfd *CONST abfd)
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{
oasys_record_union_type record;
oasys_data_type *data = OASYS_DATA(abfd);
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boolean loop = true;
oasys_per_section_type *per ;
asection *s;
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/* See if the data has been slurped already .. */
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for (s = abfd->sections; s != (asection *)NULL; s= s->next) {
per = oasys_per_section(s);
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if (per->initialized == true)
return true;
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}
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if (data->first_data_record == 0) return true;
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bfd_seek(abfd, data->first_data_record, SEEK_SET);
while (loop) {
oasys_read_record(abfd, &record);
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switch (record.header.type)
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{
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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->_raw_size);
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per->reloc_tail_ptr = (oasys_reloc_type **)&(section->relocation);
per->had_vma = false;
per->initialized = true;
section->reloc_count = 0;
section->flags = SEC_ALLOC;
}
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dst_offset = bfd_h_get_32(abfd, record.data.addr) ;
if (per->had_vma == false) {
/* Take the first vma we see as the base */
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section->vma = dst_offset;
per->had_vma = true;
}
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
dst_offset -= section->vma;
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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 */
abort();
#if 0
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r->relent.section =
data->sections[reloc &
RELOCATION_SECT_BITS];
r->relent.addend = -
r->relent.section->vma;
#endif
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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 */
abort();
#if 0
r->relent.section = (asection
*)NULL;
#endif
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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;
}
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}
break;
case RELOCATION_TYPE_COM:
BFD_FAIL();
1991-04-08 23:26:05 +00:00
}
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}
*dst_ptr++ = *src++;
}
}
}
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}
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break;
case oasys_record_is_local_enum:
case oasys_record_is_symbol_enum:
case oasys_record_is_section_enum:
break;
default:
loop = false;
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}
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}
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return true;
}
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bfd_error_vector_type bfd_error_vector;
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static boolean
DEFUN(oasys_new_section_hook,(abfd, newsect),
bfd *abfd AND
asection *newsect)
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{
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newsect->used_by_bfd = (PTR)
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bfd_alloc(abfd, sizeof(oasys_per_section_type));
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oasys_per_section( newsect)->data = (bfd_byte *)NULL;
oasys_per_section(newsect)->section = newsect;
oasys_per_section(newsect)->offset = 0;
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oasys_per_section(newsect)->initialized = false;
newsect->alignment_power = 1;
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/* Turn the section string into an index */
sscanf(newsect->name,"%u", &newsect->target_index);
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return true;
}
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static unsigned int
DEFUN(oasys_get_reloc_upper_bound, (abfd, asect),
bfd *abfd AND
sec_ptr asect)
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{
oasys_slurp_section_data(abfd);
return (asect->reloc_count+1) * sizeof(arelent *);
}
static boolean
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DEFUN(oasys_get_section_contents,(abfd, section, location, offset, count),
bfd *abfd AND
sec_ptr section AND
PTR location AND
1991-04-17 00:54:03 +00:00
file_ptr offset AND
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bfd_size_type count)
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{
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oasys_per_section_type *p = (oasys_per_section_type *) section->used_by_bfd;
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oasys_slurp_section_data(abfd);
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if (p->initialized == false)
{
(void) memset(location, 0, (int)count);
}
else
{
1991-08-17 00:17:15 +00:00
(void) memcpy(location,(PTR)( p->data + offset), (int)count);
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}
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return true;
}
unsigned int
1991-09-26 22:28:46 +00:00
DEFUN(oasys_canonicalize_reloc,(ignore_abfd, section, relptr, symbols),
bfd *ignore_abfd AND
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sec_ptr section AND
arelent **relptr AND
asymbol **symbols)
1991-04-04 02:12:28 +00:00
{
1991-04-17 00:54:03 +00:00
unsigned int reloc_count = 0;
1991-04-04 02:12:28 +00:00
oasys_reloc_type *src = (oasys_reloc_type *)(section->relocation);
while (src != (oasys_reloc_type *)NULL) {
abort();
#if 0
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if (src->relent.section == (asection *)NULL)
{
src->relent.sym_ptr_ptr = symbols + src->symbol;
}
#endif
1991-04-04 02:12:28 +00:00
*relptr ++ = &src->relent;
src = src->next;
1991-04-17 00:54:03 +00:00
reloc_count++;
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}
*relptr = (arelent *)NULL;
1991-04-17 00:54:03 +00:00
return section->reloc_count = reloc_count;
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}
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/* 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)
1991-04-04 02:12:28 +00:00
{
1991-04-17 00:54:03 +00:00
int checksum;
size_t i;
uint8e_type *ptr;
record->header.length = size;
record->header.type = (int)type;
1991-04-17 00:54:03 +00:00
record->header.check_sum = 0;
record->header.fill = 0;
ptr = &record->pad[0];
checksum = 0;
for (i = 0; i < size; i++) {
checksum += *ptr++;
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}
1991-04-17 00:54:03 +00:00
record->header.check_sum = 0xff & (- checksum);
bfd_write((PTR)record, 1, size, abfd);
}
1991-04-04 02:12:28 +00:00
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/* 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->section == & bfd_com_section) {
1991-04-17 00:54:03 +00:00
symbol.relb = RELOCATION_TYPE_COM;
1991-05-21 00:14:16 +00:00
bfd_h_put_16(abfd, index, (uint8e_type *)(&symbol.refno[0]));
1991-04-17 00:54:03 +00:00
index++;
}
else if (g->section == & bfd_abs_section) {
1991-04-17 00:54:03 +00:00
symbol.relb = RELOCATION_TYPE_ABS;
1991-05-21 00:14:16 +00:00
bfd_h_put_16(abfd, 0, (uint8e_type *)(&symbol.refno[0]));
1991-04-17 00:54:03 +00:00
}
else if (g->section == &bfd_und_section) {
1991-04-17 00:54:03 +00:00
symbol.relb = RELOCATION_TYPE_UND ;
1991-05-21 00:14:16 +00:00
bfd_h_put_16(abfd, index, (uint8e_type *)(&symbol.refno[0]));
1991-04-17 00:54:03 +00:00
/* Overload the value field with the output index number */
index++;
}
else if (g->flags & BSF_DEBUGGING) {
/* throw it away */
continue;
}
else {
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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;
}
1991-05-21 00:14:16 +00:00
bfd_h_put_16(abfd, 0, (uint8e_type *)(&symbol.refno[0]));
1991-04-17 00:54:03 +00:00
}
while (src[l]) {
dst[l] = src[l];
l++;
}
1991-08-17 00:17:15 +00:00
bfd_h_put_32(abfd, g->value, (bfd_byte*) symbol.value);
1991-04-17 00:54:03 +00:00
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);
1991-04-17 00:54:03 +00:00
}
else {
oasys_write_record(abfd,
oasys_record_is_symbol_enum,
(oasys_record_union_type *) &symbol,
offsetof(oasys_symbol_record_type, name[0]) + l);
1991-04-17 00:54:03 +00:00
}
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->_cooked_size, (bfd_byte *) out.value);
1991-08-17 00:17:15 +00:00
bfd_h_put_32(abfd, s->vma, (bfd_byte *) out.vma);
1991-04-17 00:54:03 +00:00
oasys_write_record(abfd,
oasys_record_is_section_enum,
(oasys_record_union_type *) &out,
sizeof(out));
}
1991-04-04 02:12:28 +00:00
}
1991-04-17 00:54:03 +00:00
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);
1991-04-17 23:19:27 +00:00
if (length > (size_t)sizeof(r.module_name)) {
1991-04-17 00:54:03 +00:00
length = sizeof(r.module_name);
}
1991-04-04 02:12:28 +00:00
1991-04-17 00:54:03 +00:00
(void)memcpy(r.module_name,
abfd->filename,
length);
(void)memset(r.module_name + length,
' ',
sizeof(r.module_name) - length);
1991-04-04 02:12:28 +00:00
1991-04-17 00:54:03 +00:00
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]));
1991-04-04 02:12:28 +00:00
1991-04-17 00:54:03 +00:00
}
1991-04-04 02:12:28 +00:00
static void
1991-04-17 00:54:03 +00:00
DEFUN(oasys_write_end,(abfd),
bfd *CONST abfd)
{
oasys_end_record_type end;
uint8e_type null = 0;
1991-04-17 00:54:03 +00:00
end.relb = RELOCATION_TYPE_ABS;
1991-08-17 00:17:15 +00:00
bfd_h_put_32(abfd, abfd->start_address, (bfd_byte *)end.entry);
bfd_h_put_16(abfd, 0, (bfd_byte *)end.fill);
1991-04-17 00:54:03 +00:00
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);
1991-04-17 00:54:03 +00:00
}
static int
DEFUN(comp,(ap, bp),
1991-04-23 16:02:09 +00:00
CONST PTR ap AND
CONST PTR bp)
1991-04-17 00:54:03 +00:00
{
1991-04-23 16:02:09 +00:00
arelent *a = *((arelent **)ap);
arelent *b = *((arelent **)bp);
1991-04-17 00:54:03 +00:00
return a->address - b->address;
}
/*
Writing data..
*/
static void
DEFUN(oasys_write_data, (abfd),
bfd *CONST abfd)
1991-04-04 02:12:28 +00:00
{
1991-04-17 00:54:03 +00:00
asection *s;
1991-04-04 02:12:28 +00:00
for (s = abfd->sections; s != (asection *)NULL; s = s->next) {
1991-07-04 16:52:56 +00:00
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 */
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
qsort(s->orelocation,
s->reloc_count,
sizeof(arelent **),
comp);
}
current_byte_index = 0;
processed_data.relb = s->target_index | RELOCATION_TYPE_REL;
1991-04-17 00:54:03 +00:00
while (current_byte_index < s->_cooked_size)
1991-07-04 16:52:56 +00:00
{
/* 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];
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
unsigned int i;
unsigned int long_length = 128;
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
bfd_h_put_32(abfd, s->vma + current_byte_index, processed_data.addr);
if ((size_t)(long_length + current_byte_index) > (size_t)(s->_cooked_size)) {
long_length = s->_cooked_size - current_byte_index;
1991-07-04 16:52:56 +00:00
}
while (long_length > 0 && (dst - (uint8e_type*)&processed_data < 128)) {
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
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,
1991-05-21 00:14:16 +00:00
bfd_get_16(abfd,raw_data) +
current_byte_index, raw_data);
1991-07-04 16:52:56 +00:00
}
1991-07-04 16:52:56 +00:00
else {
bfd_put_32(abfd,
bfd_get_32(abfd,raw_data) +
current_byte_index, raw_data);
}
}
else {
1991-07-04 16:52:56 +00:00
rel_byte = 0;
}
if (how->size ==2) {
rel_byte |= 0x40;
}
1991-07-04 16:52:56 +00:00
/* Is this a section relative relocation, or a symbol
relative relocation ? */
abort();
#if 0
1991-07-04 16:52:56 +00:00
if (r->section != (asection*)NULL)
{
1991-08-31 00:54:16 +00:00
/* The relent has a section attached, so it must be section
1991-07-04 16:52:56 +00:00
relative */
1991-04-17 00:54:03 +00:00
rel_byte |= RELOCATION_TYPE_REL;
1991-07-04 16:52:56 +00:00
rel_byte |= r->section->output_section->target_index;
1991-04-17 00:54:03 +00:00
*dst++ = rel_byte;
}
1991-07-04 16:52:56 +00:00
else
#endif
1991-07-04 16:52:56 +00:00
{
asymbol *p = *(r->sym_ptr_ptr);
1991-08-31 00:54:16 +00:00
/* If this symbol has a section attached, then it
1991-07-04 16:52:56 +00:00
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;
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
*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;
}
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
}
}
1991-04-17 00:54:03 +00:00
}
1991-07-04 16:52:56 +00:00
/* 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++;
1991-04-17 00:54:03 +00:00
}
1991-07-04 16:52:56 +00:00
mod = dst++;
long_length -= length;
1991-04-17 00:54:03 +00:00
}
1991-07-04 16:52:56 +00:00
oasys_write_record(abfd,
oasys_record_is_data_enum,
(oasys_record_union_type *)&processed_data,
dst - (uint8e_type*)&processed_data);
1991-04-17 00:54:03 +00:00
1991-07-04 16:52:56 +00:00
}
}
1991-04-04 02:12:28 +00:00
}
}
1991-04-17 00:54:03 +00:00
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;
}
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/** exec and core file sections */
/* set section contents is complicated with OASYS since the format is
* not a byte image, but a record stream.
*/
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static boolean
DEFUN(oasys_set_section_contents,(abfd, section, location, offset, count),
bfd *abfd AND
sec_ptr section AND
PTR location AND
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file_ptr offset AND
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bfd_size_type count)
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{
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if (count != 0) {
if (oasys_per_section(section)->data == (bfd_byte *)NULL )
{
oasys_per_section(section)->data =
(bfd_byte *)(bfd_alloc(abfd,section->_cooked_size));
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}
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(void) memcpy((PTR)(oasys_per_section(section)->data + offset),
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location,
count);
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}
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. */
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static asymbol *
DEFUN(oasys_make_empty_symbol,(abfd),
bfd *abfd)
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{
oasys_symbol_type *new =
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(oasys_symbol_type *)bfd_zalloc (abfd, sizeof (oasys_symbol_type));
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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);
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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 */
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p->abfd->arelt_data = (PTR)p;
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}
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)
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{
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oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data;
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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;
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}
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}
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static int
DEFUN(oasys_sizeof_headers,(abfd, exec),
bfd *abfd AND
boolean exec)
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{
return 0;
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}
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#define FOO PROTO
#define oasys_core_file_failing_command (char *(*)())(bfd_nullvoidptr)
#define oasys_core_file_failing_signal (int (*)())bfd_0
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#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
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#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_set_arch_mach bfd_default_set_arch_mach
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#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
#define oasys_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
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/*SUPPRESS 460 */
bfd_target oasys_vec =
{
"oasys", /* name */
bfd_target_oasys_flavour,
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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 */
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1, /* minimum alignment */
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_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 */
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{_bfd_dummy_target,
oasys_object_p, /* bfd_check_format */
oasys_archive_p,
_bfd_dummy_target,
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},
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{ /* 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,
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},
JUMP_TABLE(oasys)
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};