diff options
Diffstat (limited to 'binutils-2.25/bfd/oasys.c')
| -rw-r--r-- | binutils-2.25/bfd/oasys.c | 1269 |
1 files changed, 1269 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/oasys.c b/binutils-2.25/bfd/oasys.c new file mode 100644 index 00000000..ebb12e84 --- /dev/null +++ b/binutils-2.25/bfd/oasys.c @@ -0,0 +1,1269 @@ +/* BFD back-end for oasys objects. + Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001, + 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011 + 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 3 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., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#define UNDERSCORE_HACK 1 +#include "sysdep.h" +#include "bfd.h" +#include "safe-ctype.h" +#include "libbfd.h" +#include "oasys.h" +#include "liboasys.h" + +/* Read in all the section data and relocation stuff too. */ + +static bfd_boolean +oasys_read_record (bfd *abfd, oasys_record_union_type *record) +{ + bfd_size_type amt = sizeof (record->header); + + if (bfd_bread ((void *) record, amt, abfd) != amt) + return FALSE; + + amt = record->header.length - sizeof (record->header); + if ((long) amt <= 0) + return TRUE; + if (bfd_bread ((void *) ((char *) record + sizeof (record->header)), amt, abfd) + != amt) + return FALSE; + return TRUE; +} + +static size_t +oasys_string_length (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 bfd_boolean +oasys_slurp_symbol_table (bfd *const abfd) +{ + oasys_record_union_type record; + oasys_data_type *data = OASYS_DATA (abfd); + bfd_boolean loop = TRUE; + asymbol *dest_defined; + asymbol *dest; + char *string_ptr; + bfd_size_type amt; + + if (data->symbols != NULL) + return TRUE; + + /* Buy enough memory for all the symbols and all the names. */ + amt = abfd->symcount; + amt *= sizeof (asymbol); + data->symbols = bfd_alloc (abfd, amt); + + amt = data->symbol_string_length; +#ifdef UNDERSCORE_HACK + /* Buy 1 more char for each symbol to keep the underscore in. */ + amt += abfd->symcount; +#endif + data->strings = bfd_alloc (abfd, amt); + + 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 + 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 (FALSE); + break; + } + dest->name = string_ptr; + dest->the_bfd = abfd; + dest->udata.p = NULL; + dest->value = 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 (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; + +static long +oasys_canonicalize_symtab (bfd *abfd, asymbol **location) +{ + asymbol *symbase; + unsigned int counter; + + if (! oasys_slurp_symbol_table (abfd)) + 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 (bfd *abfd) +{ + oasys_archive_header_type header; + oasys_extarchive_header_type header_ext; + unsigned int i; + file_ptr filepos; + bfd_size_type amt; + + amt = sizeof (header_ext); + if (bfd_seek (abfd, (file_ptr) 0, 0) != 0 + || bfd_bread ((void *) &header_ext, amt, abfd) != amt) + { + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + return NULL; + } + + header.version = H_GET_32 (abfd, header_ext.version); + header.mod_count = H_GET_32 (abfd, header_ext.mod_count); + header.mod_tbl_offset = H_GET_32 (abfd, header_ext.mod_tbl_offset); + header.sym_tbl_size = H_GET_32 (abfd, header_ext.sym_tbl_size); + header.sym_count = H_GET_32 (abfd, header_ext.sym_count); + header.sym_tbl_offset = H_GET_32 (abfd, header_ext.sym_tbl_offset); + header.xref_count = H_GET_32 (abfd, header_ext.xref_count); + header.xref_lst_offset = 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 reasonableness 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 NULL; + + /* That all worked, let's buy the space for the header and read in + the headers. */ + { + oasys_ar_data_type *ar; + oasys_module_info_type *module; + oasys_module_table_type record; + + amt = sizeof (oasys_ar_data_type); + ar = bfd_alloc (abfd, amt); + + amt = header.mod_count; + amt *= sizeof (oasys_module_info_type); + module = bfd_alloc (abfd, amt); + + 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. */ + { + oasys_extmodule_table_type_b_type record_ext; + + amt = sizeof (record_ext); + if (bfd_bread ((void *) &record_ext, amt, abfd) != amt) + return NULL; + + record.mod_size = H_GET_32 (abfd, record_ext.mod_size); + record.file_offset = H_GET_32 (abfd, record_ext.file_offset); + + record.dep_count = H_GET_32 (abfd, record_ext.dep_count); + record.depee_count = H_GET_32 (abfd, record_ext.depee_count); + record.sect_count = H_GET_32 (abfd, record_ext.sect_count); + record.module_name_size = H_GET_32 (abfd, + record_ext.mod_name_length); + + amt = record.module_name_size; + module[i].name = bfd_alloc (abfd, amt + 1); + if (!module[i].name) + return NULL; + if (bfd_bread ((void *) module[i].name, amt, abfd) != amt) + 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 bfd_boolean +oasys_mkobject (bfd *abfd) +{ + bfd_size_type amt = sizeof (oasys_data_type); + + abfd->tdata.oasys_obj_data = bfd_alloc (abfd, amt); + + return abfd->tdata.oasys_obj_data != NULL; +} + +/* 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 bfd_boolean +oasys_slurp_section_data (bfd *const abfd) +{ + oasys_record_union_type record; + oasys_data_type *data = OASYS_DATA (abfd); + bfd_boolean loop = TRUE; + oasys_per_section_type *per; + asection *s; + bfd_size_type amt; + + /* See if the data has been slurped already. */ + for (s = abfd->sections; s != NULL; s = s->next) + { + per = oasys_per_section (s); + if (per->initialized) + 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) + { + arelent **relpp; + + per->data = bfd_zalloc (abfd, section->size); + if (!per->data) + return FALSE; + relpp = §ion->relocation; + per->reloc_tail_ptr = (oasys_reloc_type **) relpp; + per->had_vma = FALSE; + per->initialized = TRUE; + section->reloc_count = 0; + section->flags = SEC_ALLOC; + } + + dst_offset = H_GET_32 (abfd, record.data.addr); + if (! per->had_vma) + { + /* 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; + + amt = sizeof (oasys_reloc_type); + r = bfd_alloc (abfd, amt); + if (!r) + return FALSE; + *(per->reloc_tail_ptr) = r; + per->reloc_tail_ptr = &r->next; + r->next = NULL; + /* Reference to undefined symbol. */ + src++; + /* There is no symbol. */ + r->symbol = 0; + /* Work out the howto. */ + abort (); + r->relent.address = dst_ptr - dst_base_ptr; + r->relent.howto = &howto_table[reloc >> 6]; + r->relent.sym_ptr_ptr = 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) + r->relent.addend -= dst_ptr - dst_base_ptr; + } + break; + + case RELOCATION_TYPE_UND: + { + oasys_reloc_type *r; + + amt = sizeof (oasys_reloc_type); + r = bfd_alloc (abfd, amt); + if (!r) + return FALSE; + *(per->reloc_tail_ptr) = r; + per->reloc_tail_ptr = &r->next; + r->next = NULL; + /* Reference to undefined symbol. */ + src++; + /* Get symbol number. */ + r->symbol = (src[0] << 8) | src[1]; + /* Work out the howto. */ + abort (); + + r->relent.addend = 0; + r->relent.address = dst_ptr - dst_base_ptr; + r->relent.howto = &howto_table[reloc >> 6]; + r->relent.sym_ptr_ptr = 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) + 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; + +} + +#define MAX_SECS 16 + +static const bfd_target * +oasys_object_p (bfd *abfd) +{ + oasys_data_type *oasys; + oasys_data_type *save = OASYS_DATA (abfd); + bfd_boolean loop = TRUE; + bfd_boolean had_usefull = FALSE; + + abfd->tdata.oasys_obj_data = 0; + oasys_mkobject (abfd); + oasys = OASYS_DATA (abfd); + memset ((void *) 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, (bfd_size_type) 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->size = H_GET_32 (abfd, record.section.value); + s->vma = 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) + goto fail; + loop = FALSE; + break; + default: + goto fail; + } + } + oasys->symbols = 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 NULL; +} + + +static void +oasys_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, + 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 (bfd *abfd, void * 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 == NULL ? + (const char *) "*abs" : symbol->section->name; + + bfd_print_symbol_vandf (abfd, (void *) file, symbol); + + fprintf (file, " %-5s %s", + section_name, + symbol->name); + } + break; + } +} + +static bfd_boolean +oasys_new_section_hook (bfd *abfd, asection *newsect) +{ + if (!newsect->used_by_bfd) + { + newsect->used_by_bfd + = bfd_alloc (abfd, (bfd_size_type) sizeof (oasys_per_section_type)); + if (!newsect->used_by_bfd) + return FALSE; + } + oasys_per_section (newsect)->data = 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 _bfd_generic_new_section_hook (abfd, newsect); +} + + +static long +oasys_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) +{ + if (! oasys_slurp_section_data (abfd)) + return -1; + return (asect->reloc_count + 1) * sizeof (arelent *); +} + +static bfd_boolean +oasys_get_section_contents (bfd *abfd, + sec_ptr section, + void * location, + file_ptr offset, + bfd_size_type count) +{ + oasys_per_section_type *p = oasys_per_section (section); + + oasys_slurp_section_data (abfd); + + if (! p->initialized) + (void) memset (location, 0, (size_t) count); + else + (void) memcpy (location, (void *) (p->data + offset), (size_t) count); + + return TRUE; +} + +static long +oasys_canonicalize_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED, + sec_ptr section, + arelent **relptr, + asymbol **symbols ATTRIBUTE_UNUSED) +{ + unsigned int reloc_count = 0; + oasys_reloc_type *src = (oasys_reloc_type *) (section->relocation); + + if (src != NULL) + abort (); + + *relptr = NULL; + return section->reloc_count = reloc_count; +} + + +/* Writing. */ + +/* Calculate the checksum and write one record. */ + +static bfd_boolean +oasys_write_record (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_bwrite ((void *) record, (bfd_size_type) size, abfd) != size) + return FALSE; + return TRUE; +} + + +/* Write out all the symbols. */ + +static bfd_boolean +oasys_write_syms (bfd *abfd) +{ + unsigned int count; + asymbol **generic = bfd_get_outsymbols (abfd); + unsigned int sym_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; + H_PUT_16 (abfd, sym_index, symbol.refno); + sym_index++; + } + else if (bfd_is_abs_section (g->section)) + { + symbol.relb = RELOCATION_TYPE_ABS; + H_PUT_16 (abfd, 0, symbol.refno); + } + else if (bfd_is_und_section (g->section)) + { + symbol.relb = RELOCATION_TYPE_UND; + H_PUT_16 (abfd, sym_index, symbol.refno); + /* Overload the value field with the output sym_index number */ + sym_index++; + } + else if (g->flags & BSF_DEBUGGING) + /* Throw it away. */ + continue; + else + { + if (g->section == 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; + + H_PUT_16 (abfd, 0, symbol.refno); + } + +#ifdef UNDERSCORE_HACK + if (src[l] == '_') + dst[l++] = '.'; +#endif + while (src[l]) + { + dst[l] = src[l]; + l++; + } + + 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 = sym_index - 1; + } + + return TRUE; +} + +/* Write a section header for each section. */ + +static bfd_boolean +oasys_write_sections (bfd *abfd) +{ + asection *s; + static oasys_section_record_type out; + + for (s = abfd->sections; s != NULL; s = s->next) + { + if (!ISDIGIT (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; + H_PUT_32 (abfd, s->size, out.value); + 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 bfd_boolean +oasys_write_header (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); + else if (length < (size_t) sizeof (r.module_name)) + (void) memset (r.module_name + length, ' ', + sizeof (r.module_name) - length); + + (void) memcpy (r.module_name, abfd->filename, length); + + r.version_number = OASYS_VERSION_NUMBER; + r.rev_number = OASYS_REV_NUMBER; + + return oasys_write_record (abfd, oasys_record_is_header_enum, + (oasys_record_union_type *) & r, + offsetof (oasys_header_record_type, + description[0])); +} + +static bfd_boolean +oasys_write_end (bfd *abfd) +{ + oasys_end_record_type end; + unsigned char null = 0; + + end.relb = RELOCATION_TYPE_ABS; + H_PUT_32 (abfd, abfd->start_address, end.entry); + 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; + + return bfd_bwrite ((void *) &null, (bfd_size_type) 1, abfd) == 1; +} + +static int +comp (const void * ap, const void * bp) +{ + arelent *a = *((arelent **) ap); + arelent *b = *((arelent **) bp); + + return a->address - b->address; +} + +static bfd_boolean +oasys_write_data (bfd *abfd) +{ + asection *s; + + for (s = abfd->sections; s != 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->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; + + 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->size && dst <= + & processed_data.data[sizeof (processed_data.data) - 8]) + { + if (relocs_to_go != 0) + { + arelent *r = *p; + + /* There is a relocation, is it for this byte ? */ + if (r->address == current_byte_index) + abort (); + } + + /* If this is coming from an unloadable section then copy + zeros. */ + if (raw_data == NULL) + *dst++ = 0; + else + *dst++ = *raw_data++; + + if (++i >= 8) + { + i = 0; + mod = dst++; + *mod = 0; + } + current_byte_index++; + } + + /* 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), + (size_t) (dst - (bfd_byte *) &processed_data)))) + return FALSE; + } + } + } + + return TRUE; +} + +static bfd_boolean +oasys_write_object_contents (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; +} + +/* Set section contents is complicated with OASYS since the format is + not a byte image, but a record stream. */ + +static bfd_boolean +oasys_set_section_contents (bfd *abfd, + sec_ptr section, + const void * location, + file_ptr offset, + bfd_size_type count) +{ + if (count != 0) + { + if (oasys_per_section (section)->data == NULL) + { + oasys_per_section (section)->data = bfd_alloc (abfd, section->size); + if (!oasys_per_section (section)->data) + return FALSE; + } + (void) memcpy ((void *) (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 (bfd *abfd) +{ + bfd_size_type amt = sizeof (oasys_symbol_type); + oasys_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); + + if (!new_symbol_type) + return NULL; + new_symbol_type->symbol.the_bfd = abfd; + return &new_symbol_type->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 (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 == 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 == 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 = (void *) p; + } + return p->abfd; + } + + bfd_set_error (bfd_error_no_more_archived_files); + return NULL; +} + +static bfd_boolean +oasys_find_nearest_line (bfd *abfd ATTRIBUTE_UNUSED, + asection *section ATTRIBUTE_UNUSED, + asymbol **symbols ATTRIBUTE_UNUSED, + bfd_vma offset ATTRIBUTE_UNUSED, + const char **filename_ptr ATTRIBUTE_UNUSED, + const char **functionname_ptr ATTRIBUTE_UNUSED, + unsigned int *line_ptr ATTRIBUTE_UNUSED) +{ + return FALSE; +} + +static bfd_boolean +oasys_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, + const char **filename_ptr ATTRIBUTE_UNUSED, + const char **functionname_ptr ATTRIBUTE_UNUSED, + unsigned int *line_ptr ATTRIBUTE_UNUSED) +{ + return FALSE; +} + +static int +oasys_generic_stat_arch_elt (bfd *abfd, struct stat *buf) +{ + oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data; + + if (mod == NULL) + { + bfd_set_error (bfd_error_invalid_operation); + return -1; + } + + buf->st_size = mod->size; + buf->st_mode = 0666; + return 0; +} + +static int +oasys_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info ATTRIBUTE_UNUSED) +{ + 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 ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) bfd_true) +#define oasys_truncate_arname bfd_dont_truncate_arname +#define oasys_write_armap ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) bfd_true) +#define oasys_read_ar_hdr bfd_nullvoidptr +#define oasys_write_ar_hdr ((bfd_boolean (*) (bfd *, bfd *)) bfd_false) +#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_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) +#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_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_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_lookup_section_flags bfd_generic_lookup_section_flags +#define oasys_bfd_merge_sections bfd_generic_merge_sections +#define oasys_bfd_is_group_section bfd_generic_is_group_section +#define oasys_bfd_discard_group bfd_generic_discard_group +#define oasys_section_already_linked _bfd_generic_section_already_linked +#define oasys_bfd_define_common_symbol bfd_generic_define_common_symbol +#define oasys_bfd_link_hash_table_create _bfd_generic_link_hash_table_create +#define oasys_bfd_link_hash_table_free _bfd_generic_link_hash_table_free +#define oasys_bfd_link_add_symbols _bfd_generic_link_add_symbols +#define oasys_bfd_link_just_syms _bfd_generic_link_just_syms +#define oasys_bfd_copy_link_hash_symbol_type \ + _bfd_generic_copy_link_hash_symbol_type +#define oasys_bfd_final_link _bfd_generic_final_link +#define oasys_bfd_link_split_section _bfd_generic_link_split_section + +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. */ + 0, /* match priority. */ + 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, /* Headers. */ + + {_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), + + NULL, + + NULL +}; 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