diff options
Diffstat (limited to 'bfd/oasys.c')
| -rw-r--r-- | bfd/oasys.c | 1535 |
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 +}; 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