diff options
Diffstat (limited to 'contrib/gdb/bfd/versados.c')
-rw-r--r-- | contrib/gdb/bfd/versados.c | 906 |
1 files changed, 0 insertions, 906 deletions
diff --git a/contrib/gdb/bfd/versados.c b/contrib/gdb/bfd/versados.c deleted file mode 100644 index 84ad114..0000000 --- a/contrib/gdb/bfd/versados.c +++ /dev/null @@ -1,906 +0,0 @@ -/* BFD back-end for VERSAdos-E objects. - - Versados is a Motorola trademark. - - Copyright 1995 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. */ - -/* - SUBSECTION - VERSAdos-E relocateable object file format - - DESCRIPTION - - This module supports reading of VERSAdos relocateable - object files. - - A VERSAdos file looks like contains - - o Indentification Record - o External Symbol Definition Record - o Object Text Recrod - o End Record - - - */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "libiberty.h" - - -static boolean versados_mkobject PARAMS ((bfd *)); -static boolean versados_scan PARAMS ((bfd *)); -static const bfd_target *versados_object_p PARAMS ((bfd *)); - - -#define VHEADER '1' -#define VESTDEF '2' -#define VOTR '3' -#define VEND '4' - - -#define ES_BASE 17 /* first symbol has esdid 17 */ - -/* Per file target dependent information */ - -/* one for each section */ -struct esdid - { - asection *section; /* ptr to bfd version */ - unsigned char *contents; /* used to build image */ - int pc; - int relocs; /* reloc count, valid end of pass 1 */ - int donerel; /* have relocs been translated */ - }; - -typedef struct versados_data_struct - { - int es_done; /* count of symbol index, starts at ES_BASE */ - asymbol *symbols; /* pointer to local symbols */ - char *strings; /* strings of all the above */ - int stringlen; /* len of string table (valid end of pass1) */ - int nsecsyms; /* number of sections */ - - int ndefs; /* number of exported symbols (they dont get esdids) */ - int nrefs; /* number of imported symbols (valid end of pass1) */ - - int ref_idx; /* current processed value of the above */ - int def_idx; - - int pass_2_done; - - struct esdid e[16]; /* per section info */ - int alert; /* to see if we're trampling */ - asymbol *rest[256 - 16]; /* per symbol info */ - - } -tdata_type; - -#define VDATA(abfd) (abfd->tdata.versados_data) -#define EDATA(abfd, n) (abfd->tdata.versados_data->e[n]) -#define RDATA(abfd, n) (abfd->tdata.versados_data->rest[n]) - -struct ext_otr - { - unsigned char size; - char type; - unsigned char map[4]; - unsigned char esdid; - unsigned char data[200]; - }; - -struct ext_vheader - { - unsigned char size; - char type; /* record type */ - char name[10]; /* module name */ - char rev; /* module rev number */ - char lang; - char vol[4]; - char user[2]; - char cat[8]; - char fname[8]; - char ext[2]; - char time[3]; - char date[3]; - char rest[211]; - }; - -struct ext_esd - { - unsigned char size; - char type; - unsigned char esd_entries[1]; - }; -#define ESD_ABS 0 -#define ESD_COMMON 1 -#define ESD_STD_REL_SEC 2 -#define ESD_SHRT_REL_SEC 3 -#define ESD_XDEF_IN_SEC 4 -#define ESD_XREF_SYM 7 -#define ESD_XREF_SEC 6 -#define ESD_XDEF_IN_ABS 5 -union ext_any - { - unsigned char size; - struct ext_vheader header; - struct ext_esd esd; - struct ext_otr otr; - }; - -/* Initialize by filling in the hex conversion array. */ - - - - - -/* Set up the tdata information. */ - -static boolean -versados_mkobject (abfd) - bfd *abfd; -{ - if (abfd->tdata.versados_data == NULL) - { - tdata_type *tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type)); - if (tdata == NULL) - return false; - abfd->tdata.versados_data = tdata; - tdata->symbols = NULL; - VDATA (abfd)->alert = 0x12345678; - } - - bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); - return true; -} - - -/* Report a problem in an S record file. FIXME: This probably should - not call fprintf, but we really do need some mechanism for printing - error messages. */ - - - -static asymbol * -versados_new_symbol (abfd, snum, name, val, sec) - bfd *abfd; - int snum; - const char *name; - bfd_vma val; - asection *sec; -{ - asymbol *n = VDATA (abfd)->symbols + snum; - n->name = name; - n->value = val; - n->section = sec; - n->the_bfd = abfd; - n->flags = 0; - return n; -} - - -static int -get_record (abfd, ptr) - bfd *abfd; - union ext_any *ptr; -{ - bfd_read (&ptr->size, 1, 1, abfd); - if (bfd_read ((char *) ptr + 1, 1, ptr->size, abfd) != ptr->size) - return 0; - return 1; -} - -int -get_4 (pp) - unsigned char **pp; -{ - unsigned char *p = *pp; - *pp += 4; - return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0); -} - -void -get_10 (pp, name) - unsigned char **pp; - char *name; -{ - char *p = (char *) *pp; - int len = 10; - *pp += len; - while (*p != ' ' - && len) - { - *name++ = *p++; - len--; - } - *name = 0; -} - -static char * -new_symbol_string (abfd, name) - bfd *abfd; - char *name; -{ - char *n = VDATA (abfd)->strings; - strcpy (VDATA (abfd)->strings, name); - VDATA (abfd)->strings += strlen (VDATA (abfd)->strings) + 1; - return n; -} - - -static void -process_esd (abfd, esd, pass) - bfd *abfd; - struct ext_esd *esd; - int pass; -{ - /* Read through the ext def for the est entries */ - int togo = esd->size - 2; - bfd_vma size; - bfd_vma start; - asection *sec; - char name[11]; - unsigned char *ptr = esd->esd_entries; - unsigned char *end = ptr + togo; - while (ptr < end) - { - int scn = *ptr & 0xf; - int typ = (*ptr >> 4) & 0xf; - - /* Declare this section */ - sprintf (name, "%d", scn); - sec = bfd_make_section_old_way (abfd, strdup (name)); - sec->target_index = scn; - EDATA (abfd, scn).section = sec; - ptr++; - switch (typ) - { - default: - abort (); - case ESD_XREF_SEC: - case ESD_XREF_SYM: - { - int snum = VDATA (abfd)->ref_idx++; - get_10 (&ptr, name); - if (pass == 1) - { - VDATA (abfd)->stringlen += strlen (name) + 1; - } - else - { - int esidx; - asymbol *s; - char *n = new_symbol_string (abfd, name); - s = versados_new_symbol (abfd, snum, n, 0, - &bfd_und_section, scn); - esidx = VDATA (abfd)->es_done++; - RDATA (abfd, esidx - ES_BASE) = s; - } - } - break; - - - case ESD_ABS: - size = get_4 (&ptr); - start = get_4 (&ptr); - break; - case ESD_STD_REL_SEC: - case ESD_SHRT_REL_SEC: - { - sec->_raw_size = get_4 (&ptr); - sec->flags |= SEC_ALLOC; - } - break; - case ESD_XDEF_IN_ABS: - sec = (asection *) & bfd_abs_section; - case ESD_XDEF_IN_SEC: - { - int snum = VDATA (abfd)->def_idx++; - long val; - get_10 (&ptr, name); - val = get_4 (&ptr); - if (pass == 1) - { - /* Just remember the symbol */ - VDATA (abfd)->stringlen += strlen (name) + 1; - } - else - { - asymbol *s; - char *n = new_symbol_string (abfd, name); - s = versados_new_symbol (abfd, snum + VDATA (abfd)->nrefs, n, val, sec, scn); - s->flags |= BSF_GLOBAL; - } - } - break; - } - } -} - -#define R_RELWORD 1 -#define R_RELLONG 2 -#define R_RELWORD_NEG 3 -#define R_RELLONG_NEG 4 - -reloc_howto_type versados_howto_table[] = -{ - HOWTO (R_RELWORD, 0, 1, 16, false, - 0, complain_overflow_dont, 0, - "+v16", true, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_RELLONG, 0, 2, 32, false, - 0, complain_overflow_dont, 0, - "+v32", true, 0xffffffff, 0xffffffff, false), - - HOWTO (R_RELWORD_NEG, 0, -1, 16, false, - 0, complain_overflow_dont, 0, - "-v16", true, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_RELLONG_NEG, 0, -2, 32, false, - 0, complain_overflow_dont, 0, - "-v32", true, 0xffffffff, 0xffffffff, false), -}; - - -static int -get_offset (len, ptr) - int len; - unsigned char *ptr; -{ - int val = 0; - if (len) - { - int i; - val = *ptr++; - if (val & 0x80) - val |= ~0xff; - for (i = 1; i < len; i++) - val = (val << 8) | *ptr++; - } - - return val; -} - -static void -process_otr (abfd, otr, pass) - bfd *abfd; - struct ext_otr *otr; - int pass; -{ - unsigned long shift; - unsigned char *srcp = otr->data; - unsigned char *endp = (unsigned char *) otr + otr->size; - unsigned int bits = (otr->map[0] << 24) - | (otr->map[1] << 16) - | (otr->map[2] << 8) - | (otr->map[3] << 0); - - struct esdid *esdid = &EDATA (abfd, otr->esdid - 1); - unsigned char *contents = esdid->contents; - int need_contents = 0; - unsigned int dst_idx = esdid->pc; - - for (shift = (1 << 31); shift && srcp < endp; shift >>= 1) - { - if (bits & shift) - { - int flag = *srcp++; - int esdids = (flag >> 5) & 0x7; - int sizeinwords = ((flag >> 3) & 1) ? 2 : 1; - int offsetlen = flag & 0x7; - int j; - - - if (esdids == 0) - { - /* A zero esdid means the new pc is the offset given */ - dst_idx += get_offset (offsetlen, srcp); - srcp += offsetlen; - } - else - { - int val = get_offset (offsetlen, srcp + esdids); - if (pass == 1) - need_contents = 1; - else - for (j = 0; j < sizeinwords * 2; j++) - { - contents[dst_idx + (sizeinwords * 2) - j - 1] = val; - val >>= 8; - } - - for (j = 0; j < esdids; j++) - { - int esdid = *srcp++; - - if (esdid) - { - int rn = EDATA (abfd, otr->esdid - 1).relocs++; - if (pass == 1) - { - /* this is the first pass over the data, - just remember that we need a reloc */ - } - else - { - arelent *n = - EDATA (abfd, otr->esdid - 1).section->relocation + rn; - n->address = dst_idx; - - n->sym_ptr_ptr = (asymbol **) esdid; - n->addend = 0; - n->howto = versados_howto_table + ((j & 1) * 2) + (sizeinwords - 1); - } - } - } - srcp += offsetlen; - dst_idx += sizeinwords * 2; - } - } - else - { - need_contents = 1; - if (dst_idx < esdid->section->_raw_size) - if (pass == 2) - { - /* absolute code, comes in 16 bit lumps */ - contents[dst_idx] = srcp[0]; - contents[dst_idx + 1] = srcp[1]; - } - dst_idx += 2; - srcp += 2; - } - } - EDATA (abfd, otr->esdid - 1).pc = dst_idx; - - if (!contents && need_contents) - esdid->contents = (unsigned char *) bfd_alloc (abfd, esdid->section->_raw_size); - - -} - -static boolean -versados_scan (abfd) - bfd *abfd; -{ - int loop = 1; - int i; - int j; - int nsecs = 0; - - VDATA (abfd)->nrefs = 0; - VDATA (abfd)->ndefs = 0; - VDATA (abfd)->ref_idx = 0; - VDATA (abfd)->def_idx = 0; - - while (loop) - { - union ext_any any; - if (!get_record (abfd, &any)) - return true; - switch (any.header.type) - { - case VHEADER: - break; - case VEND: - loop = 0; - break; - case VESTDEF: - process_esd (abfd, &any.esd, 1); - break; - case VOTR: - process_otr (abfd, &any.otr, 1); - break; - } - } - - /* Now allocate space for the relocs and sections */ - - VDATA (abfd)->nrefs = VDATA (abfd)->ref_idx; - VDATA (abfd)->ndefs = VDATA (abfd)->def_idx; - VDATA (abfd)->ref_idx = 0; - VDATA (abfd)->def_idx = 0; - - abfd->symcount = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs; - - for (i = 0; i < 16; i++) - { - struct esdid *esdid = &EDATA (abfd, i); - if (esdid->section) - { - esdid->section->relocation - = (arelent *) bfd_alloc (abfd, sizeof (arelent) * esdid->relocs); - - esdid->pc = 0; - - if (esdid->contents) - esdid->section->flags |= SEC_HAS_CONTENTS | SEC_LOAD; - - esdid->section->reloc_count = esdid->relocs; - if (esdid->relocs) - esdid->section->flags |= SEC_RELOC; - - esdid->relocs = 0; - - /* Add an entry into the symbol table for it */ - nsecs++; - VDATA (abfd)->stringlen += strlen (esdid->section->name) + 1; - } - } - - abfd->symcount += nsecs; - - VDATA (abfd)->symbols = (asymbol *) bfd_alloc (abfd, - sizeof (asymbol) * (abfd->symcount)); - - VDATA (abfd)->strings = bfd_alloc (abfd, VDATA (abfd)->stringlen); - - - /* Actually fill in the section symbols, - we stick them at the end of the table */ - - for (j = VDATA (abfd)->nrefs + VDATA (abfd)->ndefs, i = 0; i < 16; i++) - { - struct esdid *esdid = &EDATA (abfd, i); - asection *sec = esdid->section; - if (sec) - { - asymbol *s = VDATA (abfd)->symbols + j; - s->name = new_symbol_string (abfd, sec->name); - s->section = sec; - s->flags = BSF_LOCAL; - s->value = 0; - s->the_bfd = abfd; - j++; - } - } - if (abfd->symcount) - abfd->flags |= HAS_SYMS; - - /* Set this to nsecs - since we've already planted the section - symbols */ - VDATA (abfd)->nsecsyms = nsecs; - - VDATA (abfd)->ref_idx = 0; - - return 1; -} - - - -/* Check whether an existing file is a versados file. */ - -static const bfd_target * -versados_object_p (abfd) - bfd *abfd; -{ - struct ext_vheader ext; - unsigned char len; - - if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET)) - return NULL; - - - bfd_read (&len, 1, 1, abfd); - if (bfd_read (&ext.type, 1, len, abfd) != len - || ext.type != '1') - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - /* ok, looks like a record, build the tdata and read - in.. */ - - if (!versados_mkobject (abfd) - || !versados_scan (abfd)) - return NULL; - - return abfd->xvec; -} - - -static boolean -versados_pass_2 (abfd) - bfd *abfd; -{ - union ext_any any; - - if (VDATA (abfd)->pass_2_done) - return 1; - - if (bfd_seek (abfd, 0, SEEK_SET) != 0) - return 0; - - VDATA (abfd)->es_done = ES_BASE; - - - /* read records till we get to where we want to be */ - - while (1) - { - get_record (abfd, &any); - switch (any.header.type) - { - case VEND: - VDATA (abfd)->pass_2_done = 1; - return 1; - case VESTDEF: - process_esd (abfd, &any.esd, 2); - break; - case VOTR: - process_otr (abfd, &any.otr, 2); - break; - } - } -} - -static boolean -versados_get_section_contents (abfd, section, location, offset, count) - bfd *abfd; - asection *section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - if (!versados_pass_2 (abfd)) - return false; - - memcpy (location, - EDATA (abfd, section->target_index).contents + offset, - (size_t) count); - - return true; -} - -#define versados_get_section_contents_in_window \ - _bfd_generic_get_section_contents_in_window - -static boolean -versados_set_section_contents (abfd, section, location, offset, bytes_to_do) - bfd *abfd; - sec_ptr section; - PTR location; - file_ptr offset; - bfd_size_type bytes_to_do; -{ - return false; -} - - -/*ARGSUSED */ -static int -versados_sizeof_headers (abfd, exec) - bfd *abfd; - boolean exec; -{ - return 0; -} - -static asymbol * -versados_make_empty_symbol (abfd) - bfd *abfd; -{ - asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); - if (new) - new->the_bfd = abfd; - return new; -} - -/* Return the amount of memory needed to read the symbol table. */ - -static long -versados_get_symtab_upper_bound (abfd) - bfd *abfd; -{ - return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *); -} - -/* Return the symbol table. */ - -static long -versados_get_symtab (abfd, alocation) - bfd *abfd; - asymbol **alocation; -{ - unsigned int symcount = bfd_get_symcount (abfd); - unsigned int i; - asymbol *s; - - versados_pass_2 (abfd); - - for (i = 0, s = VDATA (abfd)->symbols; - i < symcount; - s++, i++) - { - *alocation++ = s; - } - - *alocation = NULL; - - return symcount; -} - -/*ARGSUSED */ -void -versados_get_symbol_info (ignore_abfd, symbol, ret) - bfd *ignore_abfd; - asymbol *symbol; - symbol_info *ret; -{ - bfd_symbol_info (symbol, ret); -} - -/*ARGSUSED */ -void -versados_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: - fprintf (file, "%s", symbol->name); - break; - default: - bfd_print_symbol_vandf ((PTR) file, symbol); - fprintf (file, " %-5s %s", - symbol->section->name, - symbol->name); - - } -} - -long -versados_get_reloc_upper_bound (abfd, asect) - bfd *abfd; - sec_ptr asect; -{ - return (asect->reloc_count + 1) * sizeof (arelent *); -} - - -long -versados_canonicalize_reloc (abfd, section, relptr, symbols) - bfd *abfd; - sec_ptr section; - arelent **relptr; - asymbol **symbols; -{ - unsigned int count; - arelent *src; - - versados_pass_2 (abfd); - src = section->relocation; - if (!EDATA (abfd, section->target_index).donerel) - { - EDATA (abfd, section->target_index).donerel = 1; - /* translate from indexes to symptr ptrs */ - for (count = 0; count < section->reloc_count; count++) - { - int esdid = (int) src[count].sym_ptr_ptr; - - if (esdid == 0) - { - src[count].sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; - } - else if (esdid < ES_BASE) /* Section relative thing */ - { - struct esdid *e = &EDATA (abfd, esdid - 1); - if (!section) - { - /** relocation relative to section which was - never declared ! */ - } - src[count].sym_ptr_ptr = e->section->symbol_ptr_ptr; - } - else - { - src[count].sym_ptr_ptr = symbols + esdid - ES_BASE; - } - - } - } - - for (count = 0; count < section->reloc_count; count++) - { - *relptr++ = src++; - } - *relptr = 0; - return section->reloc_count; -} - -#define versados_close_and_cleanup _bfd_generic_close_and_cleanup -#define versados_bfd_free_cached_info _bfd_generic_bfd_free_cached_info -#define versados_new_section_hook _bfd_generic_new_section_hook - -#define versados_bfd_is_local_label bfd_generic_is_local_label -#define versados_get_lineno _bfd_nosymbols_get_lineno -#define versados_find_nearest_line _bfd_nosymbols_find_nearest_line -#define versados_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol -#define versados_read_minisymbols _bfd_generic_read_minisymbols -#define versados_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol - -#define versados_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup - -#define versados_set_arch_mach bfd_default_set_arch_mach - -#define versados_bfd_get_relocated_section_contents \ - bfd_generic_get_relocated_section_contents -#define versados_bfd_relax_section bfd_generic_relax_section -#define versados_bfd_link_hash_table_create _bfd_generic_link_hash_table_create -#define versados_bfd_link_add_symbols _bfd_generic_link_add_symbols -#define versados_bfd_final_link _bfd_generic_final_link -#define versados_bfd_link_split_section _bfd_generic_link_split_section - -const bfd_target versados_vec = -{ - "versados", /* name */ - bfd_target_versados_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, - versados_object_p, /* bfd_check_format */ - _bfd_dummy_target, - _bfd_dummy_target, - }, - { - bfd_false, - versados_mkobject, - _bfd_generic_mkarchive, - bfd_false, - }, - { /* bfd_write_contents */ - bfd_false, - bfd_false, - _bfd_write_archive_contents, - bfd_false, - }, - - BFD_JUMP_TABLE_GENERIC (versados), - BFD_JUMP_TABLE_COPY (_bfd_generic), - BFD_JUMP_TABLE_CORE (_bfd_nocore), - BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), - BFD_JUMP_TABLE_SYMBOLS (versados), - BFD_JUMP_TABLE_RELOCS (versados), - BFD_JUMP_TABLE_WRITE (versados), - BFD_JUMP_TABLE_LINK (versados), - BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), - - (PTR) 0 -}; 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