aboutsummaryrefslogtreecommitdiff
path: root/bfd/oasys.c
diff options
context:
space:
mode:
Diffstat (limited to 'bfd/oasys.c')
-rw-r--r--bfd/oasys.c1535
1 files changed, 1535 insertions, 0 deletions
diff --git a/bfd/oasys.c b/bfd/oasys.c
new file mode 100644
index 0000000..b51560e
--- /dev/null
+++ b/bfd/oasys.c
@@ -0,0 +1,1535 @@
+/* BFD back-end for oasys objects.
+ Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998
+ Free Software Foundation, Inc.
+ Written by Steve Chamberlain of Cygnus Support, <sac@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(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
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#define UNDERSCORE_HACK 1
+#include "bfd.h"
+#include "sysdep.h"
+#include <ctype.h>
+#include "libbfd.h"
+#include "oasys.h"
+#include "liboasys.h"
+
+/* 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
+
+static boolean oasys_read_record PARAMS ((bfd *,
+ oasys_record_union_type *));
+static boolean oasys_write_sections PARAMS ((bfd *));
+static boolean oasys_write_record PARAMS ((bfd *,
+ oasys_record_enum_type,
+ oasys_record_union_type *,
+ size_t));
+static boolean oasys_write_syms PARAMS ((bfd *));
+static boolean oasys_write_header PARAMS ((bfd *));
+static boolean oasys_write_end PARAMS ((bfd *));
+static boolean oasys_write_data PARAMS ((bfd *));
+
+/* Read in all the section data and relocation stuff too */
+PROTO (static boolean, oasys_slurp_section_data, (bfd * CONST abfd));
+
+static boolean
+oasys_read_record (abfd, record)
+ bfd *abfd;
+ oasys_record_union_type *record;
+{
+ if (bfd_read ((PTR) record, 1, sizeof (record->header), abfd)
+ != sizeof (record->header))
+ return false;
+
+ if ((size_t) record->header.length <= (size_t) sizeof (record->header))
+ return true;
+ if (bfd_read ((PTR) (((char *) record) + sizeof (record->header)),
+ 1, record->header.length - sizeof (record->header),
+ abfd)
+ != record->header.length - sizeof (record->header))
+ return false;
+ return true;
+}
+static size_t
+oasys_string_length (record)
+ oasys_record_union_type *record;
+{
+ 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.
+
+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.
+
+*/
+
+static boolean
+oasys_slurp_symbol_table (abfd)
+ bfd *CONST abfd;
+{
+ oasys_record_union_type record;
+ oasys_data_type *data = OASYS_DATA (abfd);
+ 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 =
+ (asymbol *) bfd_alloc (abfd, sizeof (asymbol) * abfd->symcount);
+#ifdef UNDERSCORE_HACK
+ /* buy 1 more char for each symbol to keep the underscore in*/
+ data->strings = bfd_alloc (abfd, data->symbol_string_length +
+ abfd->symcount);
+#else
+ data->strings = bfd_alloc (abfd, data->symbol_string_length);
+#endif
+ if (!data->symbols || !data->strings)
+ return false;
+
+ dest_defined = data->symbols + abfd->symcount - 1;
+
+ string_ptr = data->strings;
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ return false;
+ while (loop)
+ {
+
+ if (! oasys_read_record (abfd, &record))
+ return false;
+ 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 ?
+ (BSF_LOCAL) : (BSF_GLOBAL | BSF_EXPORT);
+
+
+ size_t length = oasys_string_length (&record);
+ switch (record.symbol.relb & RELOCATION_TYPE_BITS)
+ {
+ case RELOCATION_TYPE_ABS:
+ dest = dest_defined--;
+ dest->section = bfd_abs_section_ptr;
+ dest->flags = 0;
+
+ break;
+ case RELOCATION_TYPE_REL:
+ dest = dest_defined--;
+ dest->section =
+ OASYS_DATA (abfd)->sections[record.symbol.relb &
+ RELOCATION_SECT_BITS];
+ if (record.header.type == (int) oasys_record_is_local_enum)
+ {
+ dest->flags = BSF_LOCAL;
+ 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;
+ }
+ }
+ else
+ {
+
+ dest->flags = flag;
+ }
+ break;
+ case RELOCATION_TYPE_UND:
+ dest = data->symbols + bfd_h_get_16 (abfd, record.symbol.refno);
+ dest->section = bfd_und_section_ptr;
+ break;
+ case RELOCATION_TYPE_COM:
+ dest = dest_defined--;
+ dest->name = string_ptr;
+ dest->the_bfd = abfd;
+
+ dest->section = bfd_com_section_ptr;
+
+ break;
+ default:
+ dest = dest_defined--;
+ BFD_ASSERT (0);
+ break;
+ }
+ dest->name = string_ptr;
+ dest->the_bfd = abfd;
+ dest->udata.p = (PTR) NULL;
+ dest->value = bfd_h_get_32 (abfd, record.symbol.value);
+
+#ifdef UNDERSCORE_HACK
+ if (record.symbol.name[0] != '_')
+ {
+ string_ptr[0] = '_';
+ string_ptr++;
+ }
+#endif
+ memcpy (string_ptr, record.symbol.name, length);
+
+
+ string_ptr[length] = 0;
+ string_ptr += length + 1;
+ }
+ break;
+ default:
+ loop = false;
+ }
+ }
+ return true;
+}
+
+static long
+oasys_get_symtab_upper_bound (abfd)
+ bfd *CONST abfd;
+{
+ if (! oasys_slurp_symbol_table (abfd))
+ return -1;
+
+ return (abfd->symcount + 1) * (sizeof (oasys_symbol_type *));
+}
+
+/*
+*/
+
+extern const bfd_target oasys_vec;
+
+long
+oasys_get_symtab (abfd, location)
+ bfd *abfd;
+ asymbol **location;
+{
+ asymbol *symbase;
+ unsigned int counter;
+ if (oasys_slurp_symbol_table (abfd) == false)
+ {
+ return -1;
+ }
+ symbase = OASYS_DATA (abfd)->symbols;
+ for (counter = 0; counter < abfd->symcount; counter++)
+ {
+ *(location++) = symbase++;
+ }
+ *location = 0;
+ return abfd->symcount;
+}
+
+/***********************************************************************
+* archive stuff
+*/
+
+static const bfd_target *
+oasys_archive_p (abfd)
+ bfd *abfd;
+{
+ oasys_archive_header_type header;
+ oasys_extarchive_header_type header_ext;
+ unsigned int i;
+ file_ptr filepos;
+
+ if (bfd_seek (abfd, (file_ptr) 0, false) != 0
+ || (bfd_read ((PTR) & header_ext, 1, sizeof (header_ext), abfd)
+ != sizeof (header_ext)))
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ header.version = bfd_h_get_32 (abfd, header_ext.version);
+ header.mod_count = bfd_h_get_32 (abfd, header_ext.mod_count);
+ header.mod_tbl_offset = bfd_h_get_32 (abfd, header_ext.mod_tbl_offset);
+ header.sym_tbl_size = bfd_h_get_32 (abfd, header_ext.sym_tbl_size);
+ header.sym_count = bfd_h_get_32 (abfd, header_ext.sym_count);
+ header.sym_tbl_offset = bfd_h_get_32 (abfd, header_ext.sym_tbl_offset);
+ header.xref_count = bfd_h_get_32 (abfd, header_ext.xref_count);
+ header.xref_lst_offset = bfd_h_get_32 (abfd, header_ext.xref_lst_offset);
+
+ /*
+ 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
+ */
+
+ if (header.version > 10000 ||
+ header.mod_count > 10000 ||
+ header.sym_count > 100000 ||
+ header.xref_count > 100000)
+ return (const bfd_target *) NULL;
+
+ /*
+ That all worked, let's 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);
+ oasys_module_table_type record;
+
+ if (!ar || !module)
+ return NULL;
+
+ abfd->tdata.oasys_ar_data = ar;
+ ar->module = module;
+ ar->module_count = header.mod_count;
+
+ filepos = header.mod_tbl_offset;
+ for (i = 0; i < header.mod_count; i++)
+ {
+ if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
+ return NULL;
+
+ /* There are two ways of specifying the archive header */
+
+ if (0)
+ {
+ oasys_extmodule_table_type_a_type record_ext;
+ if (bfd_read ((PTR) & record_ext, 1, sizeof (record_ext), abfd)
+ != sizeof (record_ext))
+ return NULL;
+
+ record.mod_size = bfd_h_get_32 (abfd, record_ext.mod_size);
+ record.file_offset = bfd_h_get_32 (abfd, record_ext.file_offset);
+
+ record.dep_count = bfd_h_get_32 (abfd, record_ext.dep_count);
+ record.depee_count = bfd_h_get_32 (abfd, record_ext.depee_count);
+ record.sect_count = bfd_h_get_32 (abfd, record_ext.sect_count);
+
+ module[i].name = bfd_alloc (abfd, 33);
+ if (!module[i].name)
+ return NULL;
+
+ 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;
+ if (bfd_read ((PTR) & record_ext, 1, sizeof (record_ext), abfd)
+ != sizeof (record_ext))
+ return NULL;
+
+ record.mod_size = bfd_h_get_32 (abfd, record_ext.mod_size);
+ record.file_offset = bfd_h_get_32 (abfd, record_ext.file_offset);
+
+ record.dep_count = bfd_h_get_32 (abfd, record_ext.dep_count);
+ record.depee_count = bfd_h_get_32 (abfd, record_ext.depee_count);
+ record.sect_count = bfd_h_get_32 (abfd, record_ext.sect_count);
+ record.module_name_size = bfd_h_get_32 (abfd, record_ext.mod_name_length);
+
+ module[i].name = bfd_alloc (abfd, record.module_name_size + 1);
+ if (!module[i].name)
+ return NULL;
+ if (bfd_read ((PTR) module[i].name, 1, record.module_name_size,
+ abfd)
+ != record.module_name_size)
+ return NULL;
+ 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
+oasys_mkobject (abfd)
+ bfd *abfd;
+{
+
+ abfd->tdata.oasys_obj_data = (oasys_data_type *) bfd_alloc (abfd, sizeof (oasys_data_type));
+ return abfd->tdata.oasys_obj_data ? true : false;
+}
+
+#define MAX_SECS 16
+static const bfd_target *
+oasys_object_p (abfd)
+ bfd *abfd;
+{
+ oasys_data_type *oasys;
+ oasys_data_type *save = OASYS_DATA (abfd);
+ boolean loop = true;
+ boolean had_usefull = false;
+
+ abfd->tdata.oasys_obj_data = 0;
+ oasys_mkobject (abfd);
+ oasys = OASYS_DATA (abfd);
+ memset ((PTR) oasys->sections, 0xff, sizeof (oasys->sections));
+
+ /* Point to the start of the file */
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ goto fail;
+ 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;
+ if (! oasys_read_record (abfd, &record))
+ goto fail;
+ 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);
+ if (!buffer)
+ goto fail;
+ 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->_raw_size = bfd_h_get_32 (abfd, record.section.value);
+ s->vma = bfd_h_get_32 (abfd, record.section.vma);
+ 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
+ */
+ bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 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);
+ abfd->tdata.oasys_obj_data = save;
+ return (const bfd_target *) NULL;
+}
+
+
+static void
+oasys_get_symbol_info (ignore_abfd, symbol, ret)
+ bfd *ignore_abfd;
+ asymbol *symbol;
+ symbol_info *ret;
+{
+ bfd_symbol_info (symbol, ret);
+ if (!symbol->section)
+ ret->type = (symbol->flags & BSF_LOCAL) ? 'a' : 'A';
+}
+
+static void
+oasys_print_symbol (ignore_abfd, afile, symbol, how)
+ bfd *ignore_abfd;
+ PTR afile;
+ asymbol *symbol;
+ bfd_print_symbol_type how;
+{
+ FILE *file = (FILE *) afile;
+
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ case bfd_print_symbol_more:
+ fprintf (file, "%s", symbol->name);
+ break;
+ case bfd_print_symbol_all:
+ {
+ CONST char *section_name = symbol->section == (asection *) NULL ?
+ (CONST char *) "*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, complain_overflow_bitfield, 0, "abs16", true, 0x0000ffff, 0x0000ffff, false),
+ HOWTO (0, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "abs32", true, 0xffffffff, 0xffffffff, false),
+ HOWTO (0, 0, 1, 16, true, 0, complain_overflow_signed, 0, "pcrel16", true, 0x0000ffff, 0x0000ffff, false),
+ HOWTO (0, 0, 2, 32, true, 0, complain_overflow_signed, 0, "pcrel32", true, 0xffffffff, 0xffffffff, false)
+};
+
+/* Read in all the section data and relocation stuff too */
+static boolean
+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;
+
+ if (bfd_seek (abfd, data->first_data_record, SEEK_SET) != 0)
+ return false;
+ while (loop)
+ {
+ if (! oasys_read_record (abfd, &record))
+ return false;
+ switch (record.header.type)
+ {
+ case oasys_record_is_header_enum:
+ break;
+ case oasys_record_is_data_enum:
+ {
+
+ bfd_byte *src = record.data.data;
+ bfd_byte *end_src = ((bfd_byte *) & record) + record.header.length;
+ bfd_byte *dst_ptr;
+ bfd_byte *dst_base_ptr;
+ unsigned int relbit;
+ 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);
+ if (!per->data)
+ return false;
+ 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)
+ {
+ unsigned char mod_byte = *src++;
+ size_t 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)
+ {
+ unsigned char 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));
+ if (!r)
+ return false;
+ *(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
+ r->relent.section =
+ data->sections[reloc &
+ RELOCATION_SECT_BITS];
+
+ r->relent.addend = -
+ r->relent.section->vma;
+#endif
+ 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));
+ if (!r)
+ return false;
+ *(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
+ 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;
+
+}
+
+static boolean
+oasys_new_section_hook (abfd, newsect)
+ bfd *abfd;
+ asection *newsect;
+{
+ newsect->used_by_bfd = (PTR)
+ bfd_alloc (abfd, sizeof (oasys_per_section_type));
+ if (!newsect->used_by_bfd)
+ return false;
+ 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 long
+oasys_get_reloc_upper_bound (abfd, asect)
+ bfd *abfd;
+ sec_ptr asect;
+{
+ if (! oasys_slurp_section_data (abfd))
+ return -1;
+ return (asect->reloc_count + 1) * sizeof (arelent *);
+}
+
+static boolean
+oasys_get_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ 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;
+}
+
+
+long
+oasys_canonicalize_reloc (ignore_abfd, section, relptr, symbols)
+ bfd *ignore_abfd;
+ sec_ptr section;
+ arelent **relptr;
+ asymbol **symbols;
+{
+ unsigned int reloc_count = 0;
+ oasys_reloc_type *src = (oasys_reloc_type *) (section->relocation);
+ while (src != (oasys_reloc_type *) NULL)
+ {
+ abort ();
+
+#if 0
+ if (src->relent.section == (asection *) NULL)
+ {
+ src->relent.sym_ptr_ptr = symbols + src->symbol;
+ }
+#endif
+
+ *relptr++ = &src->relent;
+ src = src->next;
+ reloc_count++;
+ }
+ *relptr = (arelent *) NULL;
+ return section->reloc_count = reloc_count;
+}
+
+
+
+
+/* Writing */
+
+
+/* Calculate the checksum and write one record */
+static boolean
+oasys_write_record (abfd, type, record, size)
+ bfd *abfd;
+ oasys_record_enum_type type;
+ oasys_record_union_type *record;
+ size_t size;
+{
+ int checksum;
+ size_t i;
+ unsigned char *ptr;
+
+ record->header.length = size;
+ record->header.type = (int) type;
+ record->header.check_sum = 0;
+ record->header.fill = 0;
+ ptr = (unsigned char *) &record->pad[0];
+ checksum = 0;
+ for (i = 0; i < size; i++)
+ {
+ checksum += *ptr++;
+ }
+ record->header.check_sum = 0xff & (-checksum);
+ if (bfd_write ((PTR) record, 1, size, abfd) != size)
+ return false;
+ return true;
+}
+
+
+/* Write out all the symbols */
+static boolean
+oasys_write_syms (abfd)
+ bfd *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 (bfd_is_com_section (g->section))
+ {
+ symbol.relb = RELOCATION_TYPE_COM;
+ bfd_h_put_16 (abfd, index, symbol.refno);
+ index++;
+ }
+ else if (bfd_is_abs_section (g->section))
+ {
+ symbol.relb = RELOCATION_TYPE_ABS;
+ bfd_h_put_16 (abfd, 0, symbol.refno);
+
+ }
+ else if (bfd_is_und_section (g->section))
+ {
+ symbol.relb = RELOCATION_TYPE_UND;
+ bfd_h_put_16 (abfd, index, symbol.refno);
+ /* 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, symbol.refno);
+ }
+#ifdef UNDERSCORE_HACK
+ if (src[l] == '_')
+ dst[l++] = '.';
+#endif
+ while (src[l])
+ {
+ dst[l] = src[l];
+ l++;
+ }
+
+ bfd_h_put_32 (abfd, g->value, symbol.value);
+
+
+ if (g->flags & BSF_LOCAL)
+ {
+ if (! oasys_write_record (abfd,
+ oasys_record_is_local_enum,
+ (oasys_record_union_type *) & symbol,
+ offsetof (oasys_symbol_record_type,
+ name[0]) + l))
+ return false;
+ }
+ else
+ {
+ if (! oasys_write_record (abfd,
+ oasys_record_is_symbol_enum,
+ (oasys_record_union_type *) & symbol,
+ offsetof (oasys_symbol_record_type,
+ name[0]) + l))
+ return false;
+ }
+ g->value = index - 1;
+ }
+
+ return true;
+}
+
+
+ /* Write a section header for each section */
+static boolean
+oasys_write_sections (abfd)
+ bfd *abfd;
+{
+ asection *s;
+ static oasys_section_record_type out;
+
+ for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+ {
+ if (!isdigit ((unsigned char) s->name[0]))
+ {
+ (*_bfd_error_handler)
+ (_("%s: can not represent section `%s' in oasys"),
+ bfd_get_filename (abfd), s->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return false;
+ }
+ out.relb = RELOCATION_TYPE_REL | s->target_index;
+ bfd_h_put_32 (abfd, s->_cooked_size, out.value);
+ bfd_h_put_32 (abfd, s->vma, out.vma);
+
+ if (! oasys_write_record (abfd,
+ oasys_record_is_section_enum,
+ (oasys_record_union_type *) & out,
+ sizeof (out)))
+ return false;
+ }
+ return true;
+}
+
+static boolean
+oasys_write_header (abfd)
+ bfd *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;
+ if (! oasys_write_record (abfd,
+ oasys_record_is_header_enum,
+ (oasys_record_union_type *) & r,
+ offsetof (oasys_header_record_type,
+ description[0])))
+ return false;
+
+ return true;
+}
+
+static boolean
+oasys_write_end (abfd)
+ bfd *abfd;
+{
+ oasys_end_record_type end;
+ unsigned char null = 0;
+ end.relb = RELOCATION_TYPE_ABS;
+ bfd_h_put_32 (abfd, abfd->start_address, end.entry);
+ bfd_h_put_16 (abfd, 0, end.fill);
+ end.zero = 0;
+ if (! oasys_write_record (abfd,
+ oasys_record_is_end_enum,
+ (oasys_record_union_type *) & end,
+ sizeof (end)))
+ return false;
+ if (bfd_write ((PTR) & null, 1, 1, abfd) != 1)
+ return false;
+ return true;
+}
+
+static int
+comp (ap, bp)
+ CONST PTR ap;
+ CONST PTR bp;
+{
+ arelent *a = *((arelent **) ap);
+ arelent *b = *((arelent **) bp);
+ return a->address - b->address;
+}
+
+/*
+ Writing data..
+
+*/
+static boolean
+oasys_write_data (abfd)
+ bfd *abfd;
+{
+ asection *s;
+ for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+ {
+ if (s->flags & SEC_LOAD)
+ {
+ bfd_byte *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->_cooked_size)
+ {
+ /* Scan forwards by eight bytes or however much is left and see if
+ there are any relocations going on */
+ bfd_byte *mod = &processed_data.data[0];
+ bfd_byte *dst = &processed_data.data[1];
+
+ unsigned int i = 0;
+ *mod = 0;
+
+
+ bfd_h_put_32 (abfd, s->vma + current_byte_index,
+ processed_data.addr);
+
+ /* Don't start a relocation unless you're sure you can finish it
+ within the same data record. The worst case relocation is a
+ 4-byte relocatable value which is split across two modification
+ bytes (1 relocation byte + 2 symbol reference bytes + 2 data +
+ 1 modification byte + 2 data = 8 bytes total). That's where
+ the magic number 8 comes from.
+ */
+ while (current_byte_index < s->_raw_size && dst <=
+ &processed_data.data[sizeof (processed_data.data) - 8])
+ {
+
+
+ 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)
+ {
+ unsigned char rel_byte;
+
+ p++;
+ relocs_to_go--;
+
+ *mod |= (1 << i);
+ if (how->pc_relative)
+ {
+ rel_byte = RELOCATION_PCREL_BIT;
+
+ /* 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 |= RELOCATION_32BIT_BIT;
+ }
+
+ /* Is this a section relative relocation, or a symbol
+ relative relocation ? */
+ abort ();
+
+#if 0
+ 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
+#endif
+ {
+ 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;
+ }
+ }
+#define ADVANCE { if (++i >= 8) { i = 0; mod = dst++; *mod = 0; } current_byte_index++; }
+ /* relocations never occur from an unloadable section,
+ so we can assume that raw_data is not NULL
+ */
+ *dst++ = *raw_data++;
+ ADVANCE
+ * dst++ = *raw_data++;
+ ADVANCE
+ if (how->size == 2)
+ {
+ *dst++ = *raw_data++;
+ ADVANCE
+ * dst++ = *raw_data++;
+ ADVANCE
+ }
+ continue;
+ }
+ }
+ /* If this is coming from an unloadable section then copy
+ zeros */
+ if (raw_data == NULL)
+ {
+ *dst++ = 0;
+ }
+ else
+ {
+ *dst++ = *raw_data++;
+ }
+ ADVANCE
+ }
+
+ /* Don't write a useless null modification byte */
+ if (dst == mod + 1)
+ {
+ --dst;
+ }
+
+ if (! oasys_write_record (abfd,
+ oasys_record_is_data_enum,
+ ((oasys_record_union_type *)
+ & processed_data),
+ dst - (bfd_byte *) & processed_data))
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+
+static boolean
+oasys_write_object_contents (abfd)
+ bfd *abfd;
+{
+ if (! oasys_write_header (abfd))
+ return false;
+ if (! oasys_write_syms (abfd))
+ return false;
+ if (! oasys_write_sections (abfd))
+ return false;
+ if (! oasys_write_data (abfd))
+ return false;
+ if (! oasys_write_end (abfd))
+ return false;
+ 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
+oasys_set_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ 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->_cooked_size));
+ if (!oasys_per_section (section)->data)
+ return false;
+ }
+ (void) memcpy ((PTR) (oasys_per_section (section)->data + offset),
+ location,
+ (size_t) 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 *
+oasys_make_empty_symbol (abfd)
+ bfd *abfd;
+{
+
+ oasys_symbol_type *new =
+ (oasys_symbol_type *) bfd_zalloc (abfd, sizeof (oasys_symbol_type));
+ if (!new)
+ return NULL;
+ 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_set_error (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
+oasys_generic_stat_arch_elt (abfd, buf)
+ bfd *abfd;
+ struct stat *buf;
+{
+ oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data;
+ if (mod == (oasys_module_info_type *) NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+ else
+ {
+ buf->st_size = mod->size;
+ buf->st_mode = 0666;
+ return 0;
+ }
+}
+
+static int
+oasys_sizeof_headers (abfd, exec)
+ bfd *abfd;
+ boolean exec;
+{
+ return 0;
+}
+
+#define oasys_close_and_cleanup _bfd_generic_close_and_cleanup
+#define oasys_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+
+#define oasys_slurp_armap bfd_true
+#define oasys_slurp_extended_name_table bfd_true
+#define oasys_construct_extended_name_table \
+ ((boolean (*) PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \
+ bfd_true)
+#define oasys_truncate_arname bfd_dont_truncate_arname
+#define oasys_write_armap \
+ ((boolean (*) \
+ PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int))) \
+ bfd_true)
+#define oasys_read_ar_hdr bfd_nullvoidptr
+#define oasys_get_elt_at_index _bfd_generic_get_elt_at_index
+#define oasys_update_armap_timestamp bfd_true
+
+#define oasys_bfd_is_local_label_name bfd_generic_is_local_label_name
+#define oasys_get_lineno _bfd_nosymbols_get_lineno
+#define oasys_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define oasys_read_minisymbols _bfd_generic_read_minisymbols
+#define oasys_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
+
+#define oasys_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+
+#define oasys_set_arch_mach bfd_default_set_arch_mach
+
+#define oasys_get_section_contents_in_window \
+ _bfd_generic_get_section_contents_in_window
+
+#define oasys_bfd_get_relocated_section_contents \
+ bfd_generic_get_relocated_section_contents
+#define oasys_bfd_relax_section bfd_generic_relax_section
+#define oasys_bfd_gc_sections bfd_generic_gc_sections
+#define oasys_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define oasys_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define oasys_bfd_final_link _bfd_generic_final_link
+#define oasys_bfd_link_split_section _bfd_generic_link_split_section
+
+/*SUPPRESS 460 */
+const bfd_target oasys_vec =
+{
+ "oasys", /* name */
+ bfd_target_oasys_flavour,
+ BFD_ENDIAN_BIG, /* target byte order */
+ BFD_ENDIAN_BIG, /* target headers byte order */
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+ (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
+ | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ 0, /* leading underscore */
+ ' ', /* ar_pad_char */
+ 16, /* ar_max_namelen */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
+
+ {_bfd_dummy_target,
+ 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,
+ },
+
+ BFD_JUMP_TABLE_GENERIC (oasys),
+ BFD_JUMP_TABLE_COPY (_bfd_generic),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (oasys),
+ BFD_JUMP_TABLE_SYMBOLS (oasys),
+ BFD_JUMP_TABLE_RELOCS (oasys),
+ BFD_JUMP_TABLE_WRITE (oasys),
+ BFD_JUMP_TABLE_LINK (oasys),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) 0
+};