bfd/coff-i960.c

   1 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
   2
   3 This file is part of BFD, the Binary File Diddler.
   4
   5 BFD is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 1, or (at your option)
   8 any later version.
   9
  10 BFD is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with BFD; see the file COPYING.  If not, write to
  17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /* $Id$ */
  20
  21 #define I960 1
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "libbfd.h"
  25 #include "libcoff.h"            /* to allow easier abstraction-breaking */
  26
  27
  28
  29 #include "intel-coff.h"
  30
  31 #define CALLS    0x66003800     /* Template for 'calls' instruction     */
  32 #define BAL      0x0b000000     /* Template for 'bal' instruction       */
  33 #define BAL_MASK 0x00ffffff
  34
  35 static bfd_reloc_status_enum_type
  36 optcall_callback(abfd, reloc_entry, symbol_in, data, ignore_input_section)
  37 bfd *abfd;
  38 arelent *reloc_entry;
  39 asymbol *symbol_in;
  40 unsigned char *data;
  41 asection *ignore_input_section;
  42 {
  43   /* This item has already been relocated correctly, but we may be
  44    * able to patch in yet better code - done by digging out the
  45    * correct info on this symbol */
  46   bfd_reloc_status_enum_type result;
  47   coff_symbol_type *cs = coffsymbol(symbol_in);
  48
  49   /* So the target symbol has to be off coff type, and the symbol
  50      has to have the correct native information within it
  51      */
  52   if ((cs->symbol.the_bfd->xvec->flavour != bfd_target_coff_flavour_enum)
  53       || (cs->native == (struct syment *)NULL)) {
  54      /* This is interesting, consider the case where we're outputting */
  55      /* coff from a mix n match input, linking from coff to a symbol */
  56      /* defined in a bout file will cause this match to be true. Should */
  57      /* I complain ? - This will only work if the bout symbol is non */
  58      /* leaf. */
  59      result = bfd_reloc_dangerous;
  60
  61   }
  62   else  {
  63     switch (cs->native->n_sclass)
  64       {
  65       case C_LEAFSTAT:
  66       case C_LEAFEXT:
  67         /* This is a call to a leaf procedure, replace instruction with a bal
  68          to the correct location */
  69         {
  70          union auxent *aux = (union auxent *)(cs->native+2);
  71           int word = bfd_getlong(abfd, data + reloc_entry->address);
  72           BFD_ASSERT(cs->native->n_numaux==2);
  73           /* We replace the original call instruction with a bal to */
  74           /* the bal entry point - the offset of which is described in the */
  75           /* 2nd auxent of the original symbol. We keep the native sym and */
  76           /* auxents untouched, so the delta between the two is the */
  77           /* offset of the bal entry point */
  78           word = ((word + (aux->x_bal.x_balntry - cs->native->n_value))
  79                   & BAL_MASK) | BAL;
  80           bfd_putlong(abfd, word,  data+reloc_entry->address);
  81         }
  82         result = bfd_reloc_ok;
  83         break;
  84       case C_SCALL:
  85         {
  86           /* This is a call to a system call, replace with a calls to # */
  87           BFD_ASSERT(0);
  88         }
  89         break;
  90       default:
  91         result = bfd_reloc_ok;
  92         break;
  93       }
  94   }
  95   return result;
  96 }
  97
  98
  99
 100 static reloc_howto_type howto_table[] =
 101 {
 102   {0},
 103   {1},
 104   {2},
 105   {3},
 106   {4},
 107   {5},
 108   {6},
 109   {7},
 110   {8},
 111   {9},
 112   {10},
 113   {11},
 114   {12},
 115   {13},
 116   {14},
 117   {15},
 118   {16},
 119
 120   { (unsigned int) R_RELLONG, 0, 2, 32,false, 0, true, true, 0,"rellong", true, 0xffffffff},
 121   {18},
 122   {19},
 123   {20},
 124   {21},
 125   {22},
 126   {23},
 127   {24},
 128
 129   {  R_IPRMED, 0, 2, 24,true,0, true, true,0,"iprmed ", true, 0x00ffffff},
 130   {26},
 131
 132   {  R_OPTCALL, 0,2,24,true,0, true, true, optcall_callback, "optcall", true, 0x00ffffff},
 133
 134 };
 135
 136
 137
 138 #define BADMAG(x) I960BADMAG(x)
 139 #include "coff-code.h"
 140
 141
 142
 143 bfd_target icoff_big_vec =
 144 {
 145   "coff-Intel-big",             /* name */
 146   bfd_target_coff_flavour_enum,
 147   false,                        /* data byte order is little */
 148   true,                         /* header byte order is big */
 149
 150   (HAS_RELOC | EXEC_P |         /* object flags */
 151    HAS_LINENO | HAS_DEBUG |
 152    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
 153
 154   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 155   0,                            /* valid reloc types */
 156   '/',                          /* ar_pad_char */
 157   15,                           /* ar_max_namelen */
 158   coff_close_and_cleanup,       /* _close_and_cleanup */
 159   coff_set_section_contents,    /* bfd_set_section_contents */
 160   coff_get_section_contents,    /* bfd_get_section_contents */
 161   coff_new_section_hook,        /* new_section_hook */
 162   _bfd_dummy_core_file_failing_command, /* _core_file_failing_command */
 163   _bfd_dummy_core_file_failing_signal, /* _core_file_failing_signal */
 164   _bfd_dummy_core_file_matches_executable_p, /* _core_file_matches_ex...p */
 165
 166   bfd_slurp_coff_armap,         /* bfd_slurp_armap */
 167   _bfd_slurp_extended_name_table, /* bfd_slurp_extended_name_table*/
 168 #if 0                           /*  */
 169   bfd_dont_truncate_arname,     /* bfd_truncate_arname */
 170 #else
 171   bfd_bsd_truncate_arname,
 172 #endif
 173
 174   coff_get_symtab_upper_bound,  /* get_symtab_upper_bound */
 175   coff_get_symtab,              /* canonicalize_symtab */
 176   (void (*)())bfd_false,        /* bfd_reclaim_symbol_table */
 177   coff_get_reloc_upper_bound,   /* get_reloc_upper_bound */
 178   coff_canonicalize_reloc,      /* bfd_canonicalize_reloc */
 179   (void (*)())bfd_false,        /* bfd_reclaim_reloc */
 180
 181   coff_get_symcount_upper_bound, /* bfd_get_symcount_upper_bound */
 182   coff_get_first_symbol,        /* bfd_get_first_symbol */
 183   coff_get_next_symbol,         /* bfd_get_next_symbol */
 184   coff_classify_symbol,         /* bfd_classify_symbol */
 185   coff_symbol_hasclass,         /* bfd_symbol_hasclass */
 186   coff_symbol_name,             /* bfd_symbol_name */
 187   coff_symbol_value,            /* bfd_symbol_value */
 188
 189   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
 190   _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
 191
 192   {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
 193      bfd_generic_archive_p, _bfd_dummy_target},
 194   {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
 195      bfd_false},
 196   coff_make_empty_symbol,
 197   coff_print_symbol,
 198   coff_get_lineno,
 199   coff_set_arch_mach,
 200   coff_write_armap,
 201   bfd_generic_openr_next_archived_file,
 202     coff_find_nearest_line,
 203     bfd_generic_stat_arch_elt /* bfd_stat_arch_elt */
 204   };
 205
 206
 207
 208 bfd_target icoff_little_vec =
 209 {
 210   "coff-Intel-little",          /* name */
 211   bfd_target_coff_flavour_enum,
 212   false,                        /* data byte order is little */
 213   false,                        /* header byte order is little */
 214
 215   (HAS_RELOC | EXEC_P |         /* object flags */
 216    HAS_LINENO | HAS_DEBUG |
 217    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
 218
 219   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 220   0,                            /* valid reloc types */
 221   '/',                          /* ar_pad_char */
 222   15,                           /* ar_max_namelen */
 223   coff_close_and_cleanup,       /* _close_and_cleanup */
 224   coff_set_section_contents,    /* bfd_set_section_contents */
 225   coff_get_section_contents,    /* bfd_get_section_contents */
 226   coff_new_section_hook,        /* new_section_hook */
 227   _bfd_dummy_core_file_failing_command, /* _core_file_failing_command */
 228   _bfd_dummy_core_file_failing_signal, /* _core_file_failing_signal */
 229   _bfd_dummy_core_file_matches_executable_p, /* _core_file_matches_ex...p */
 230
 231   bfd_slurp_coff_armap,         /* bfd_slurp_armap */
 232   _bfd_slurp_extended_name_table, /* bfd_slurp_extended_name_table*/
 233 #if 0                           /*  */
 234   bfd_dont_truncate_arname,     /* bfd_truncate_arname */
 235 #else
 236   bfd_bsd_truncate_arname,
 237 #endif
 238   coff_get_symtab_upper_bound,  /* get_symtab_upper_bound */
 239   coff_get_symtab,              /* canonicalize_symtab */
 240   (void (*)())bfd_false,        /* bfd_reclaim_symbol_table */
 241   coff_get_reloc_upper_bound,   /* get_reloc_upper_bound */
 242   coff_canonicalize_reloc,      /* bfd_canonicalize_reloc */
 243   (void (*)())bfd_false,        /* bfd_reclaim_reloc */
 244
 245   coff_get_symcount_upper_bound, /* bfd_get_symcount_upper_bound */
 246   coff_get_first_symbol,        /* bfd_get_first_symbol */
 247   coff_get_next_symbol,         /* bfd_get_next_symbol */
 248   coff_classify_symbol,         /* bfd_classify_symbol */
 249   coff_symbol_hasclass,         /* bfd_symbol_hasclass */
 250   coff_symbol_name,             /* bfd_symbol_name */
 251   coff_symbol_value,            /* bfd_symbol_value */
 252
 253   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
 254   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* hdrs */
 255
 256   {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
 257      bfd_generic_archive_p, _bfd_dummy_target},
 258   {bfd_false, coff_mkobject,    /* bfd_set_format */
 259      _bfd_generic_mkarchive, bfd_false},
 260   coff_make_empty_symbol,
 261   coff_print_symbol,
 262   coff_get_lineno,
 263   coff_set_arch_mach,
 264   coff_write_armap,
 265   bfd_generic_openr_next_archived_file,
 266   coff_find_nearest_line,
 267     bfd_generic_stat_arch_elt /* bfd_stat_arch_elt */
 268 };
 269
 270