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 <ansidecl.h>
  23 #include "sysdep.h"
  24 #include "bfd.h"
  25 #include "libbfd.h"
  26 #include "libcoff.h"            /* to allow easier abstraction-breaking */
  27
  28
  29
  30 #include "intel-coff.h"
  31
  32 #define CALLS    0x66003800     /* Template for 'calls' instruction     */
  33 #define BAL      0x0b000000     /* Template for 'bal' instruction       */
  34 #define BAL_MASK 0x00ffffff
  35
  36 static bfd_reloc_status_enum_type
  37 optcall_callback(abfd, reloc_entry, symbol_in, data, ignore_input_section)
  38 bfd *abfd;
  39 arelent *reloc_entry;
  40 asymbol *symbol_in;
  41 unsigned char *data;
  42 asection *ignore_input_section;
  43 {
  44   /* This item has already been relocated correctly, but we may be
  45    * able to patch in yet better code - done by digging out the
  46    * correct info on this symbol */
  47   bfd_reloc_status_enum_type result;
  48   coff_symbol_type *cs = coffsymbol(symbol_in);
  49
  50   /* So the target symbol has to be off coff type, and the symbol
  51      has to have the correct native information within it
  52      */
  53   if ((cs->symbol.the_bfd->xvec->flavour != bfd_target_coff_flavour_enum)
  54       || (cs->native == (struct syment *)NULL)) {
  55      /* This is interesting, consider the case where we're outputting */
  56      /* coff from a mix n match input, linking from coff to a symbol */
  57      /* defined in a bout file will cause this match to be true. Should */
  58      /* I complain ? - This will only work if the bout symbol is non */
  59      /* leaf. */
  60      result = bfd_reloc_dangerous;
  61
  62   }
  63   else  {
  64     switch (cs->native->n_sclass)
  65       {
  66       case C_LEAFSTAT:
  67       case C_LEAFEXT:
  68         /* This is a call to a leaf procedure, replace instruction with a bal
  69          to the correct location */
  70         {
  71          union auxent *aux = (union auxent *)(cs->native+2);
  72           int word = bfd_getlong(abfd, data + reloc_entry->address);
  73           BFD_ASSERT(cs->native->n_numaux==2);
  74           /* We replace the original call instruction with a bal to */
  75           /* the bal entry point - the offset of which is described in the */
  76           /* 2nd auxent of the original symbol. We keep the native sym and */
  77           /* auxents untouched, so the delta between the two is the */
  78           /* offset of the bal entry point */
  79           word = ((word + (aux->x_bal.x_balntry - cs->native->n_value))
  80                   & BAL_MASK) | BAL;
  81           bfd_putlong(abfd, word,  data+reloc_entry->address);
  82         }
  83         result = bfd_reloc_ok;
  84         break;
  85       case C_SCALL:
  86         {
  87           /* This is a call to a system call, replace with a calls to # */
  88           BFD_ASSERT(0);
  89         }
  90         break;
  91       default:
  92         result = bfd_reloc_ok;
  93         break;
  94       }
  95   }
  96   return result;
  97 }
  98
  99
 100
 101 static reloc_howto_type howto_table[] =
 102 {
 103   {0},
 104   {1},
 105   {2},
 106   {3},
 107   {4},
 108   {5},
 109   {6},
 110   {7},
 111   {8},
 112   {9},
 113   {10},
 114   {11},
 115   {12},
 116   {13},
 117   {14},
 118   {15},
 119   {16},
 120
 121   { (unsigned int) R_RELLONG, 0, 2, 32,false, 0, true, true, 0,"rellong", true, 0xffffffff},
 122   {18},
 123   {19},
 124   {20},
 125   {21},
 126   {22},
 127   {23},
 128   {24},
 129
 130   {  R_IPRMED, 0, 2, 24,true,0, true, true,0,"iprmed ", true, 0x00ffffff},
 131   {26},
 132
 133   {  R_OPTCALL, 0,2,24,true,0, true, true, optcall_callback, "optcall", true, 0x00ffffff},
 134
 135 };
 136
 137
 138
 139 #define BADMAG(x) I960BADMAG(x)
 140 #include "coff-code.h"
 141
 142
 143
 144 bfd_target icoff_big_vec =
 145 {
 146   "coff-Intel-big",             /* name */
 147   bfd_target_coff_flavour_enum,
 148   false,                        /* data byte order is little */
 149   true,                         /* header byte order is big */
 150
 151   (HAS_RELOC | EXEC_P |         /* object flags */
 152    HAS_LINENO | HAS_DEBUG |
 153    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
 154
 155   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 156   0,                            /* valid reloc types */
 157   '/',                          /* ar_pad_char */
 158   15,                           /* ar_max_namelen */
 159   coff_close_and_cleanup,       /* _close_and_cleanup */
 160   coff_set_section_contents,    /* bfd_set_section_contents */
 161   coff_get_section_contents,    /* bfd_get_section_contents */
 162   coff_new_section_hook,        /* new_section_hook */
 163   _bfd_dummy_core_file_failing_command, /* _core_file_failing_command */
 164   _bfd_dummy_core_file_failing_signal, /* _core_file_failing_signal */
 165   _bfd_dummy_core_file_matches_executable_p, /* _core_file_matches_ex...p */
 166
 167   bfd_slurp_coff_armap,         /* bfd_slurp_armap */
 168   _bfd_slurp_extended_name_table, /* bfd_slurp_extended_name_table*/
 169 #if 0                           /*  */
 170   bfd_dont_truncate_arname,     /* bfd_truncate_arname */
 171 #else
 172   bfd_bsd_truncate_arname,
 173 #endif
 174
 175   coff_get_symtab_upper_bound,  /* get_symtab_upper_bound */
 176   coff_get_symtab,              /* canonicalize_symtab */
 177   (void (*)())bfd_false,        /* bfd_reclaim_symbol_table */
 178   coff_get_reloc_upper_bound,   /* get_reloc_upper_bound */
 179   coff_canonicalize_reloc,      /* bfd_canonicalize_reloc */
 180   (void (*)())bfd_false,        /* bfd_reclaim_reloc */
 181
 182   coff_get_symcount_upper_bound, /* bfd_get_symcount_upper_bound */
 183   coff_get_first_symbol,        /* bfd_get_first_symbol */
 184   coff_get_next_symbol,         /* bfd_get_next_symbol */
 185   coff_classify_symbol,         /* bfd_classify_symbol */
 186   coff_symbol_hasclass,         /* bfd_symbol_hasclass */
 187   coff_symbol_name,             /* bfd_symbol_name */
 188   coff_symbol_value,            /* bfd_symbol_value */
 189
 190   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
 191   _do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
 192
 193   {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
 194      bfd_generic_archive_p, _bfd_dummy_target},
 195   {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
 196      bfd_false},
 197   coff_make_empty_symbol,
 198   coff_print_symbol,
 199   coff_get_lineno,
 200   coff_set_arch_mach,
 201   coff_write_armap,
 202   bfd_generic_openr_next_archived_file,
 203     coff_find_nearest_line,
 204     bfd_generic_stat_arch_elt /* bfd_stat_arch_elt */
 205   };
 206
 207
 208
 209 bfd_target icoff_little_vec =
 210 {
 211   "coff-Intel-little",          /* name */
 212   bfd_target_coff_flavour_enum,
 213   false,                        /* data byte order is little */
 214   false,                        /* header byte order is little */
 215
 216   (HAS_RELOC | EXEC_P |         /* object flags */
 217    HAS_LINENO | HAS_DEBUG |
 218    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
 219
 220   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 221   0,                            /* valid reloc types */
 222   '/',                          /* ar_pad_char */
 223   15,                           /* ar_max_namelen */
 224   coff_close_and_cleanup,       /* _close_and_cleanup */
 225   coff_set_section_contents,    /* bfd_set_section_contents */
 226   coff_get_section_contents,    /* bfd_get_section_contents */
 227   coff_new_section_hook,        /* new_section_hook */
 228   _bfd_dummy_core_file_failing_command, /* _core_file_failing_command */
 229   _bfd_dummy_core_file_failing_signal, /* _core_file_failing_signal */
 230   _bfd_dummy_core_file_matches_executable_p, /* _core_file_matches_ex...p */
 231
 232   bfd_slurp_coff_armap,         /* bfd_slurp_armap */
 233   _bfd_slurp_extended_name_table, /* bfd_slurp_extended_name_table*/
 234 #if 0                           /*  */
 235   bfd_dont_truncate_arname,     /* bfd_truncate_arname */
 236 #else
 237   bfd_bsd_truncate_arname,
 238 #endif
 239   coff_get_symtab_upper_bound,  /* get_symtab_upper_bound */
 240   coff_get_symtab,              /* canonicalize_symtab */
 241   (void (*)())bfd_false,        /* bfd_reclaim_symbol_table */
 242   coff_get_reloc_upper_bound,   /* get_reloc_upper_bound */
 243   coff_canonicalize_reloc,      /* bfd_canonicalize_reloc */
 244   (void (*)())bfd_false,        /* bfd_reclaim_reloc */
 245
 246   coff_get_symcount_upper_bound, /* bfd_get_symcount_upper_bound */
 247   coff_get_first_symbol,        /* bfd_get_first_symbol */
 248   coff_get_next_symbol,         /* bfd_get_next_symbol */
 249   coff_classify_symbol,         /* bfd_classify_symbol */
 250   coff_symbol_hasclass,         /* bfd_symbol_hasclass */
 251   coff_symbol_name,             /* bfd_symbol_name */
 252   coff_symbol_value,            /* bfd_symbol_value */
 253
 254   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* data */
 255   _do_getllong, _do_putllong, _do_getlshort, _do_putlshort, /* hdrs */
 256
 257   {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
 258      bfd_generic_archive_p, _bfd_dummy_target},
 259   {bfd_false, coff_mkobject,    /* bfd_set_format */
 260      _bfd_generic_mkarchive, bfd_false},
 261   coff_make_empty_symbol,
 262   coff_print_symbol,
 263   coff_get_lineno,
 264   coff_set_arch_mach,
 265   coff_write_armap,
 266   bfd_generic_openr_next_archived_file,
 267   coff_find_nearest_line,
 268     bfd_generic_stat_arch_elt /* bfd_stat_arch_elt */
 269 };
 270
 271