/* BFD back-end for oasys objects. Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. Written by Steve Chamberlain of Cygnus Support, . 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define UNDERSCORE_HACK 1 #include "bfd.h" #include "sysdep.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 /* Read in all the section data and relocation stuff too */ PROTO(static boolean,oasys_slurp_section_data,(bfd *CONST abfd)); static void DEFUN(oasys_read_record,(abfd, record), bfd *CONST abfd AND oasys_record_union_type *record) { bfd_read((PTR)record, 1, sizeof(record->header), abfd); if ((size_t) record->header.length <= (size_t) sizeof (record->header)) return; bfd_read((PTR)(((char *)record )+ sizeof(record->header)), 1, record->header.length - sizeof(record->header), abfd); } static size_t DEFUN(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 DEFUN(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 dest_defined = data->symbols + abfd->symcount -1; string_ptr = data->strings; bfd_seek(abfd, (file_ptr)0, SEEK_SET); while (loop) { 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 ? (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; 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; break; case RELOCATION_TYPE_COM: dest = dest_defined--; dest->name = string_ptr; dest->the_bfd = abfd; dest->section = &bfd_com_section; break; default: dest = dest_defined--; BFD_ASSERT(0); break; } dest->name = string_ptr; dest->the_bfd = abfd; dest->udata = (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 unsigned int DEFUN(oasys_get_symtab_upper_bound,(abfd), bfd *CONST abfd) { oasys_slurp_symbol_table (abfd); return (abfd->symcount+1) * (sizeof (oasys_symbol_type *)); } /* */ extern bfd_target oasys_vec; unsigned int DEFUN(oasys_get_symtab,(abfd, location), bfd *abfd AND asymbol **location) { asymbol *symbase ; unsigned int counter ; if (oasys_slurp_symbol_table(abfd) == false) { return 0; } symbase = OASYS_DATA(abfd)->symbols; for (counter = 0; counter < abfd->symcount; counter++) { *(location++) = symbase++; } *location = 0; return abfd->symcount; } /*********************************************************************** * archive stuff */ static bfd_target * DEFUN(oasys_archive_p,(abfd), bfd *abfd) { oasys_archive_header_type header; oasys_extarchive_header_type header_ext; unsigned int i; file_ptr filepos; bfd_seek(abfd, (file_ptr) 0, false); bfd_read((PTR)&header_ext, 1, sizeof(header_ext), abfd); 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 (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; 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++) { bfd_seek(abfd, filepos, SEEK_SET); /* There are two ways of specifying the archive header */ if (0) { oasys_extmodule_table_type_a_type record_ext; bfd_read((PTR)&record_ext, 1, sizeof(record_ext), abfd); 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); memcpy(module[i].name, record_ext.mod_name, 33); filepos += sizeof(record_ext) + record.dep_count * 4 + record.depee_count * 4 + record.sect_count * 8 + 187; } else { oasys_extmodule_table_type_b_type record_ext; bfd_read((PTR)&record_ext, 1, sizeof(record_ext), abfd); record.mod_size = bfd_h_get_32(abfd, 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); bfd_read((PTR)module[i].name, 1, record.module_name_size, abfd); module[i].name[record.module_name_size] = 0; filepos += sizeof(record_ext) + record.dep_count * 4 + record.module_name_size + 1; } module[i].size = record.mod_size; module[i].pos = record.file_offset; module[i].abfd = 0; } } return abfd->xvec; } static boolean DEFUN(oasys_mkobject,(abfd), bfd *abfd) { abfd->tdata.oasys_obj_data = (oasys_data_type*)bfd_alloc(abfd, sizeof(oasys_data_type)); return true; } #define MAX_SECS 16 static bfd_target * DEFUN(oasys_object_p,(abfd), bfd *abfd) { oasys_data_type *oasys; oasys_data_type *save = OASYS_DATA(abfd); boolean loop = true; boolean had_usefull = false; 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 */ bfd_seek(abfd, (file_ptr)0, SEEK_SET); oasys->symbol_string_length = 0; /* Inspect the records, but only keep the section info - remember the size of the symbols */ oasys->first_data_record = 0; while (loop) { oasys_record_union_type record; oasys_read_record(abfd, &record); if ((size_t)record.header.length < (size_t)sizeof(record.header)) goto fail; switch ((oasys_record_enum_type)(record.header.type)) { case oasys_record_is_header_enum: had_usefull = true; break; case oasys_record_is_symbol_enum: case oasys_record_is_local_enum: /* Count symbols and remember their size for a future malloc */ abfd->symcount++; oasys->symbol_string_length += 1 + oasys_string_length(&record); had_usefull = true; break; case oasys_record_is_section_enum: { asection *s; char *buffer; unsigned int section_number; if (record.section.header.length != sizeof(record.section)) { goto fail; } buffer = bfd_alloc(abfd, 3); section_number= record.section.relb & RELOCATION_SECT_BITS; sprintf(buffer,"%u", section_number); s = bfd_make_section(abfd,buffer); oasys->sections[section_number] = s; switch (record.section.relb & RELOCATION_TYPE_BITS) { case RELOCATION_TYPE_ABS: case RELOCATION_TYPE_REL: break; case RELOCATION_TYPE_UND: case RELOCATION_TYPE_COM: BFD_FAIL(); } s->_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 (bfd_target *)NULL; } static void DEFUN(oasys_get_symbol_info,(ignore_abfd, symbol, ret), bfd *ignore_abfd AND asymbol *symbol AND symbol_info *ret) { bfd_symbol_info (symbol, ret); if (!symbol->section) ret->type = (symbol->flags & BSF_LOCAL) ? 'a' : 'A'; } static void DEFUN(oasys_print_symbol,(ignore_abfd, afile, symbol, how), bfd *ignore_abfd AND PTR afile AND asymbol *symbol AND 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 DEFUN(oasys_slurp_section_data,(abfd), bfd *CONST abfd) { oasys_record_union_type record; oasys_data_type *data = OASYS_DATA(abfd); boolean loop = true; oasys_per_section_type *per ; asection *s; /* See if the data has been slurped already .. */ for (s = abfd->sections; s != (asection *)NULL; s= s->next) { per = oasys_per_section(s); if (per->initialized == true) return true; } if (data->first_data_record == 0) return true; bfd_seek(abfd, data->first_data_record, SEEK_SET); while (loop) { oasys_read_record(abfd, &record); switch (record.header.type) { case oasys_record_is_header_enum: break; case oasys_record_is_data_enum: { 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); 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)); *(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)); *(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; } extern bfd_error_vector_type bfd_error_vector; static boolean DEFUN(oasys_new_section_hook,(abfd, newsect), bfd *abfd AND asection *newsect) { newsect->used_by_bfd = (PTR) bfd_alloc(abfd, sizeof(oasys_per_section_type)); oasys_per_section( newsect)->data = (bfd_byte *)NULL; oasys_per_section(newsect)->section = newsect; oasys_per_section(newsect)->offset = 0; oasys_per_section(newsect)->initialized = false; newsect->alignment_power = 1; /* Turn the section string into an index */ sscanf(newsect->name,"%u", &newsect->target_index); return true; } static unsigned int DEFUN(oasys_get_reloc_upper_bound, (abfd, asect), bfd *abfd AND sec_ptr asect) { oasys_slurp_section_data(abfd); return (asect->reloc_count+1) * sizeof(arelent *); } static boolean DEFUN(oasys_get_section_contents,(abfd, section, location, offset, count), bfd *abfd AND sec_ptr section AND PTR location AND file_ptr offset AND bfd_size_type count) { oasys_per_section_type *p = (oasys_per_section_type *) section->used_by_bfd; oasys_slurp_section_data(abfd); if (p->initialized == false) { (void) memset(location, 0, (int)count); } else { (void) memcpy(location,(PTR)( p->data + offset), (int)count); } return true; } unsigned int DEFUN(oasys_canonicalize_reloc,(ignore_abfd, section, relptr, symbols), bfd *ignore_abfd AND sec_ptr section AND arelent **relptr AND asymbol **symbols) { unsigned int reloc_count = 0; oasys_reloc_type *src = (oasys_reloc_type *)(section->relocation); while (src != (oasys_reloc_type *)NULL) { 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 void DEFUN(oasys_write_record,(abfd, type, record, size), bfd *CONST abfd AND CONST oasys_record_enum_type type AND oasys_record_union_type *record AND CONST size_t size) { int checksum; size_t i; 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); bfd_write((PTR)record, 1, size, abfd); } /* Write out all the symbols */ static void DEFUN(oasys_write_syms, (abfd), bfd * CONST abfd) { unsigned int count; asymbol **generic = bfd_get_outsymbols(abfd); unsigned int index = 0; for (count = 0; count < bfd_get_symcount(abfd); count++) { oasys_symbol_record_type symbol; asymbol * CONST g = generic[count]; CONST char *src = g->name; char *dst = symbol.name; unsigned int l = 0; if (bfd_is_com_section (g->section)) { symbol.relb = RELOCATION_TYPE_COM; bfd_h_put_16(abfd, index, symbol.refno); index++; } else if (g->section == & bfd_abs_section) { symbol.relb = RELOCATION_TYPE_ABS; bfd_h_put_16(abfd, 0, symbol.refno); } else if (g->section == &bfd_und_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) { oasys_write_record(abfd, oasys_record_is_local_enum, (oasys_record_union_type *) &symbol, offsetof(oasys_symbol_record_type, name[0]) + l); } else { oasys_write_record(abfd, oasys_record_is_symbol_enum, (oasys_record_union_type *) &symbol, offsetof(oasys_symbol_record_type, name[0]) + l); } g->value = index-1; } } /* Write a section header for each section */ static void DEFUN(oasys_write_sections, (abfd), bfd *CONST abfd) { asection *s; static oasys_section_record_type out; 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, out.value); bfd_h_put_32(abfd, s->vma, out.vma); oasys_write_record(abfd, oasys_record_is_section_enum, (oasys_record_union_type *) &out, sizeof(out)); } } static void DEFUN(oasys_write_header, (abfd), bfd *CONST abfd) { /* Create and write the header */ oasys_header_record_type r; size_t length = strlen(abfd->filename); if (length > (size_t)sizeof(r.module_name)) { length = sizeof(r.module_name); } (void)memcpy(r.module_name, abfd->filename, length); (void)memset(r.module_name + length, ' ', sizeof(r.module_name) - length); r.version_number = OASYS_VERSION_NUMBER; r.rev_number = OASYS_REV_NUMBER; oasys_write_record(abfd, oasys_record_is_header_enum, (oasys_record_union_type *)&r, offsetof(oasys_header_record_type, description[0])); } static void DEFUN(oasys_write_end,(abfd), bfd *CONST abfd) { oasys_end_record_type end; 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; oasys_write_record(abfd, oasys_record_is_end_enum, (oasys_record_union_type *)&end, sizeof(end)); bfd_write((PTR)&null, 1, 1, abfd); } static int DEFUN(comp,(ap, bp), CONST PTR ap AND CONST PTR bp) { arelent *a = *((arelent **)ap); arelent *b = *((arelent **)bp); return a->address - b->address; } /* Writing data.. */ static void DEFUN(oasys_write_data, (abfd), bfd *CONST abfd) { asection *s; for (s = abfd->sections; s != (asection *)NULL; s = s->next) { if (s->flags & SEC_LOAD) { 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<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; } oasys_write_record(abfd, oasys_record_is_data_enum, (oasys_record_union_type *)&processed_data, dst - (bfd_byte *)&processed_data); } } } } static boolean DEFUN(oasys_write_object_contents, (abfd), bfd *abfd) { oasys_write_header(abfd); oasys_write_syms(abfd); oasys_write_sections(abfd); oasys_write_data(abfd); oasys_write_end(abfd); return true; } /** exec and core file sections */ /* set section contents is complicated with OASYS since the format is * not a byte image, but a record stream. */ static boolean DEFUN(oasys_set_section_contents,(abfd, section, location, offset, count), bfd *abfd AND sec_ptr section AND PTR location AND file_ptr offset AND bfd_size_type count) { if (count != 0) { if (oasys_per_section(section)->data == (bfd_byte *)NULL ) { oasys_per_section(section)->data = (bfd_byte *)(bfd_alloc(abfd,section->_cooked_size)); } (void) memcpy((PTR)(oasys_per_section(section)->data + offset), location, count); } return true; } /* Native-level interface to symbols. */ /* We read the symbols into a buffer, which is discarded when this function exits. We read the strings into a buffer large enough to hold them all plus all the cached symbol entries. */ static asymbol * DEFUN(oasys_make_empty_symbol,(abfd), bfd *abfd) { oasys_symbol_type *new = (oasys_symbol_type *)bfd_zalloc (abfd, sizeof (oasys_symbol_type)); new->symbol.the_bfd = abfd; return &new->symbol; } /* User should have checked the file flags; perhaps we should return BFD_NO_MORE_SYMBOLS if there are none? */ static bfd * oasys_openr_next_archived_file(arch, prev) bfd *arch; bfd *prev; { oasys_ar_data_type *ar = OASYS_AR_DATA(arch); oasys_module_info_type *p; /* take the next one from the arch state, or reset */ if (prev == (bfd *)NULL) { /* Reset the index - the first two entries are bogus*/ ar->module_index = 0; } p = ar->module + ar->module_index; ar->module_index++; if (ar->module_index <= ar->module_count) { if (p->abfd == (bfd *)NULL) { p->abfd = _bfd_create_empty_archive_element_shell(arch); p->abfd->origin = p->pos; p->abfd->filename = p->name; /* Fixup a pointer to this element for the member */ p->abfd->arelt_data = (PTR)p; } return p->abfd; } else { bfd_error = no_more_archived_files; return (bfd *)NULL; } } static boolean oasys_find_nearest_line(abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) bfd *abfd; asection *section; asymbol **symbols; bfd_vma offset; char **filename_ptr; char **functionname_ptr; unsigned int *line_ptr; { return false; } static int DEFUN(oasys_generic_stat_arch_elt,(abfd, buf), bfd *abfd AND struct stat *buf) { oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data; if (mod == (oasys_module_info_type *)NULL) { bfd_error = invalid_operation; return -1; } else { buf->st_size = mod->size; buf->st_mode = 0666; return 0; } } static int DEFUN(oasys_sizeof_headers,(abfd, exec), bfd *abfd AND boolean exec) { return 0; } #define FOO PROTO #define oasys_core_file_failing_command (char *(*)())(bfd_nullvoidptr) #define oasys_core_file_failing_signal (int (*)())bfd_0 #define oasys_core_file_matches_executable_p 0 #define oasys_slurp_armap bfd_true #define oasys_slurp_extended_name_table bfd_true #define oasys_truncate_arname (void (*)())bfd_nullvoidptr #define oasys_write_armap 0 #define oasys_get_lineno (struct lineno_cache_entry *(*)())bfd_nullvoidptr #define oasys_close_and_cleanup bfd_generic_close_and_cleanup #define oasys_set_arch_mach bfd_default_set_arch_mach #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 #define oasys_bfd_relax_section bfd_generic_relax_section #define oasys_bfd_seclet_link bfd_generic_seclet_link #define oasys_bfd_reloc_type_lookup \ ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) #define oasys_bfd_make_debug_symbol \ ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr) /*SUPPRESS 460 */ bfd_target oasys_vec = { "oasys", /* name */ bfd_target_oasys_flavour, 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 */ 0, /* leading underscore */ ' ', /* ar_pad_char */ 16, /* ar_max_namelen */ 1, /* minimum alignment */ bfd_getb64, bfd_getb_signed_64, bfd_putb64, bfd_getb32, bfd_getb_signed_32, bfd_putb32, bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ bfd_getb64, bfd_getb_signed_64, bfd_putb64, bfd_getb32, bfd_getb_signed_32, bfd_putb32, bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ {_bfd_dummy_target, oasys_object_p, /* bfd_check_format */ oasys_archive_p, _bfd_dummy_target, }, { /* bfd_set_format */ bfd_false, oasys_mkobject, _bfd_generic_mkarchive, bfd_false }, { /* bfd_write_contents */ bfd_false, oasys_write_object_contents, _bfd_write_archive_contents, bfd_false, }, JUMP_TABLE(oasys), (PTR) 0 };