gdb/ecoff.c

   1 /* Byte swap a symbol table in MIPS' format (Third-Eye).
   2    Copyright 1992 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include "defs.h"
  21 #include "bfd.h"
  22 #define LANGUAGE_C              /* Wierd MIPS crap */
  23 #include "sym.h"                /* MIPS symbols */
  24 #include "symconst.h"           /* MIPS symbols */
  25 #include "coff/ecoff-ext.h"     /* ECOFF external struct defns */
  26
  27 void
  28 ecoff_swap_hdr_in (abfd, ext_copy, intern)
  29      bfd *abfd;
  30      struct hdr_ext *ext_copy;
  31      HDRR *intern;
  32 {
  33   struct hdr_ext ext[1];
  34
  35   *ext = *ext_copy;
  36
  37   intern->magic         = bfd_h_get_16 (abfd, (bfd_byte *)ext->h_magic);
  38   intern->vstamp        = bfd_h_get_16 (abfd, (bfd_byte *)ext->h_vstamp);
  39   intern->ilineMax      = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ilineMax);
  40   intern->cbLine        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbLine);
  41   intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbLineOffset);
  42   intern->idnMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_idnMax);
  43   intern->cbDnOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbDnOffset);
  44   intern->ipdMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ipdMax);
  45   intern->cbPdOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbPdOffset);
  46   intern->isymMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_isymMax);
  47   intern->cbSymOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSymOffset);
  48   intern->ioptMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ioptMax);
  49   intern->cbOptOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbOptOffset);
  50   intern->iauxMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_iauxMax);
  51   intern->cbAuxOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbAuxOffset);
  52   intern->issMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_issMax);
  53   intern->cbSsOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSsOffset);
  54   intern->issExtMax     = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_issExtMax);
  55   intern->cbSsExtOffset = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSsExtOffset);
  56   intern->ifdMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ifdMax);
  57   intern->cbFdOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbFdOffset);
  58   intern->crfd          = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_crfd);
  59   intern->cbRfdOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbRfdOffset);
  60   intern->iextMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_iextMax);
  61   intern->cbExtOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbExtOffset);
  62
  63 #ifdef TEST
  64   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
  65     abort();
  66 #endif
  67 }
  68
  69 /* Swap in the file descriptor record.  */
  70
  71 void
  72 ecoff_swap_fdr_in (abfd, ext_copy, intern)
  73      bfd *abfd;
  74      struct fdr_ext *ext_copy;
  75      FDR *intern;
  76 {
  77   struct fdr_ext ext[1];
  78
  79   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
  80
  81   intern->adr           = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_adr);
  82   intern->rss           = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_rss);
  83   intern->issBase       = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_issBase);
  84   intern->cbSs          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbSs);
  85   intern->isymBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_isymBase);
  86   intern->csym          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_csym);
  87   intern->ilineBase     = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_ilineBase);
  88   intern->cline         = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cline);
  89   intern->ioptBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_ioptBase);
  90   intern->copt          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_copt);
  91   intern->ipdFirst      = bfd_h_get_16 (abfd, (bfd_byte *)ext->f_ipdFirst);
  92   intern->cpd           = bfd_h_get_16 (abfd, (bfd_byte *)ext->f_cpd);
  93   intern->iauxBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_iauxBase);
  94   intern->caux          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_caux);
  95   intern->rfdBase       = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_rfdBase);
  96   intern->crfd          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_crfd);
  97
  98   /* now the fun stuff... */
  99   if (abfd->xvec->header_byteorder_big_p != false) {
 100     intern->lang        = (ext->f_bits1[0] & FDR_BITS1_LANG_BIG)
 101                                         >> FDR_BITS1_LANG_SH_BIG;
 102     intern->fMerge      = 0 != (ext->f_bits1[0] & FDR_BITS1_FMERGE_BIG);
 103     intern->fReadin     = 0 != (ext->f_bits1[0] & FDR_BITS1_FREADIN_BIG);
 104     intern->fBigendian  = 0 != (ext->f_bits1[0] & FDR_BITS1_FBIGENDIAN_BIG);
 105     intern->glevel      = (ext->f_bits2[0] & FDR_BITS2_GLEVEL_BIG)
 106                                         >> FDR_BITS2_GLEVEL_SH_BIG;
 107  /* intern->reserved  we ignore.  */
 108   } else {
 109     intern->lang        = (ext->f_bits1[0] & FDR_BITS1_LANG_LITTLE)
 110                                         >> FDR_BITS1_LANG_SH_LITTLE;
 111     intern->fMerge      = 0 != (ext->f_bits1[0] & FDR_BITS1_FMERGE_LITTLE);
 112     intern->fReadin     = 0 != (ext->f_bits1[0] & FDR_BITS1_FREADIN_LITTLE);
 113     intern->fBigendian  = 0 != (ext->f_bits1[0] & FDR_BITS1_FBIGENDIAN_LITTLE);
 114     intern->glevel      = (ext->f_bits2[0] & FDR_BITS2_GLEVEL_LITTLE)
 115                                         >> FDR_BITS2_GLEVEL_SH_LITTLE;
 116  /* intern->reserved  we ignore.  */
 117   }
 118
 119   intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbLineOffset);
 120   intern->cbLine        = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbLine);
 121
 122 #ifdef TEST
 123   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 124     abort();
 125 #endif
 126 }
 127
 128
 129
 130 /* Swap in the procedure descriptor record.  */
 131
 132 void
 133 ecoff_swap_pdr_in (abfd, ext_copy, intern)
 134      bfd *abfd;
 135      struct pdr_ext *ext_copy;
 136      PDR *intern;
 137 {
 138   struct pdr_ext ext[1];
 139
 140   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
 141
 142   intern->adr           = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_adr);
 143   intern->isym          = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_isym);
 144   intern->iline         = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_iline);
 145   intern->regmask       = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_regmask);
 146   intern->regoffset     = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_regoffset);
 147   intern->iopt          = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_iopt);
 148   intern->fregmask      = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_fregmask);
 149   intern->fregoffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_fregoffset);
 150   intern->frameoffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_frameoffset);
 151   intern->framereg      = bfd_h_get_16 (abfd, (bfd_byte *)ext->p_framereg);
 152   intern->pcreg         = bfd_h_get_16 (abfd, (bfd_byte *)ext->p_pcreg);
 153   intern->lnLow         = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_lnLow);
 154   intern->lnHigh        = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_lnHigh);
 155   intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_cbLineOffset);
 156
 157 #ifdef TEST
 158   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 159     abort();
 160 #endif
 161 }
 162
 163
 164 /* Swap in a symbol record.  */
 165
 166 void
 167 ecoff_swap_sym_in (abfd, ext_copy, intern)
 168      bfd *abfd;
 169      struct sym_ext *ext_copy;
 170      SYMR *intern;
 171 {
 172   struct sym_ext ext[1];
 173
 174   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
 175
 176   intern->iss           = bfd_h_get_32 (abfd, (bfd_byte *)ext->s_iss);
 177   intern->value         = bfd_h_get_32 (abfd, (bfd_byte *)ext->s_value);
 178
 179   /* now the fun stuff... */
 180   if (abfd->xvec->header_byteorder_big_p != false) {
 181     intern->st          =  (ext->s_bits1[0] & SYM_BITS1_ST_BIG)
 182                                            >> SYM_BITS1_ST_SH_BIG;
 183     intern->sc          = ((ext->s_bits1[0] & SYM_BITS1_SC_BIG)
 184                                            << SYM_BITS1_SC_SH_LEFT_BIG)
 185                         | ((ext->s_bits2[0] & SYM_BITS2_SC_BIG)
 186                                            >> SYM_BITS2_SC_SH_BIG);
 187     intern->reserved    = 0 != (ext->s_bits2[0] & SYM_BITS2_RESERVED_BIG);
 188     intern->index       = ((ext->s_bits2[0] & SYM_BITS2_INDEX_BIG)
 189                                            << SYM_BITS2_INDEX_SH_LEFT_BIG)
 190                         | (ext->s_bits3[0] << SYM_BITS3_INDEX_SH_LEFT_BIG)
 191                         | (ext->s_bits4[0] << SYM_BITS4_INDEX_SH_LEFT_BIG);
 192   } else {
 193     intern->st          =  (ext->s_bits1[0] & SYM_BITS1_ST_LITTLE)
 194                                            >> SYM_BITS1_ST_SH_LITTLE;
 195     intern->sc          = ((ext->s_bits1[0] & SYM_BITS1_SC_LITTLE)
 196                                            >> SYM_BITS1_SC_SH_LITTLE)
 197                         | ((ext->s_bits2[0] & SYM_BITS2_SC_LITTLE)
 198                                            << SYM_BITS2_SC_SH_LEFT_LITTLE);
 199     intern->reserved    = 0 != (ext->s_bits2[0] & SYM_BITS2_RESERVED_LITTLE);
 200     intern->index       = ((ext->s_bits2[0] & SYM_BITS2_INDEX_LITTLE)
 201                                            >> SYM_BITS2_INDEX_SH_LITTLE)
 202                         | (ext->s_bits3[0] << SYM_BITS3_INDEX_SH_LEFT_LITTLE)
 203                         | (ext->s_bits4[0] << SYM_BITS4_INDEX_SH_LEFT_LITTLE);
 204   }
 205
 206 #ifdef TEST
 207   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 208     abort();
 209 #endif
 210 }
 211
 212
 213 /* Swap in an external symbol record.  */
 214
 215 void
 216 ecoff_swap_ext_in (abfd, ext_copy, intern)
 217      bfd *abfd;
 218      struct ext_ext *ext_copy;
 219      EXTR *intern;
 220 {
 221   struct ext_ext ext[1];
 222
 223   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
 224
 225   /* now the fun stuff... */
 226   if (abfd->xvec->header_byteorder_big_p != false) {
 227     intern->jmptbl      = 0 != (ext->es_bits1[0] & EXT_BITS1_JMPTBL_BIG);
 228     intern->cobol_main  = 0 != (ext->es_bits1[0] & EXT_BITS1_COBOL_MAIN_BIG);
 229   } else {
 230     intern->jmptbl      = 0 != (ext->es_bits1[0] & EXT_BITS1_JMPTBL_LITTLE);
 231     intern->cobol_main  = 0 != (ext->es_bits1[0] & EXT_BITS1_COBOL_MAIN_LITTLE);
 232   }
 233
 234   intern->ifd           = bfd_h_get_16 (abfd, (bfd_byte *)ext->es_ifd);
 235   ecoff_swap_sym_in (abfd, &ext->es_asym, &intern->asym);
 236
 237 #ifdef TEST
 238   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 239     abort();
 240 #endif
 241 }
 242
 243 /* Swap in a type information record.
 244    BIGEND says whether AUX symbols are big-endian or little-endian; this
 245    info comes from the file header record (fh-fBigendian).  */
 246
 247 void
 248 ecoff_swap_tir_in (bigend, ext_copy, intern)
 249      int bigend;
 250      struct tir_ext *ext_copy;
 251      TIR *intern;
 252 {
 253   struct tir_ext ext[1];
 254
 255   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
 256
 257   /* now the fun stuff... */
 258   if (bigend) {
 259     intern->fBitfield   = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_BIG);
 260     intern->continued   = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_BIG);
 261     intern->bt          = (ext->t_bits1[0] & TIR_BITS1_BT_BIG)
 262                         >>                  TIR_BITS1_BT_SH_BIG;
 263     intern->tq4         = (ext->t_tq45[0] & TIR_BITS_TQ4_BIG)
 264                         >>                  TIR_BITS_TQ4_SH_BIG;
 265     intern->tq5         = (ext->t_tq45[0] & TIR_BITS_TQ5_BIG)
 266                         >>                  TIR_BITS_TQ5_SH_BIG;
 267     intern->tq0         = (ext->t_tq01[0] & TIR_BITS_TQ0_BIG)
 268                         >>                  TIR_BITS_TQ0_SH_BIG;
 269     intern->tq1         = (ext->t_tq01[0] & TIR_BITS_TQ1_BIG)
 270                         >>                  TIR_BITS_TQ1_SH_BIG;
 271     intern->tq2         = (ext->t_tq23[0] & TIR_BITS_TQ2_BIG)
 272                         >>                  TIR_BITS_TQ2_SH_BIG;
 273     intern->tq3         = (ext->t_tq23[0] & TIR_BITS_TQ3_BIG)
 274                         >>                  TIR_BITS_TQ3_SH_BIG;
 275   } else {
 276     intern->fBitfield   = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_LITTLE);
 277     intern->continued   = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_LITTLE);
 278     intern->bt          = (ext->t_bits1[0] & TIR_BITS1_BT_LITTLE)
 279                         >>                  TIR_BITS1_BT_SH_LITTLE;
 280     intern->tq4         = (ext->t_tq45[0] & TIR_BITS_TQ4_LITTLE)
 281                         >>                  TIR_BITS_TQ4_SH_LITTLE;
 282     intern->tq5         = (ext->t_tq45[0] & TIR_BITS_TQ5_LITTLE)
 283                         >>                  TIR_BITS_TQ5_SH_LITTLE;
 284     intern->tq0         = (ext->t_tq01[0] & TIR_BITS_TQ0_LITTLE)
 285                         >>                  TIR_BITS_TQ0_SH_LITTLE;
 286     intern->tq1         = (ext->t_tq01[0] & TIR_BITS_TQ1_LITTLE)
 287                         >>                  TIR_BITS_TQ1_SH_LITTLE;
 288     intern->tq2         = (ext->t_tq23[0] & TIR_BITS_TQ2_LITTLE)
 289                         >>                  TIR_BITS_TQ2_SH_LITTLE;
 290     intern->tq3         = (ext->t_tq23[0] & TIR_BITS_TQ3_LITTLE)
 291                         >>                  TIR_BITS_TQ3_SH_LITTLE;
 292   }
 293
 294 #ifdef TEST
 295   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 296     abort();
 297 #endif
 298 }
 299
 300 /* Swap in a relative symbol record.  BIGEND says whether it is in
 301    big-endian or little-endian format.*/
 302
 303 void
 304 ecoff_swap_rndx_in (bigend, ext_copy, intern)
 305      int bigend;
 306      struct rndx_ext *ext_copy;
 307      RNDXR *intern;
 308 {
 309   struct rndx_ext ext[1];
 310
 311   *ext = *ext_copy;             /* Make it reasonable to do in-place.  */
 312
 313   /* now the fun stuff... */
 314   if (bigend) {
 315     intern->rfd   = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_BIG)
 316                   | ((ext->r_bits[1] & RNDX_BITS1_RFD_BIG)
 317                                     >> RNDX_BITS1_RFD_SH_BIG);
 318     intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_BIG)
 319                                     << RNDX_BITS1_INDEX_SH_LEFT_BIG)
 320                   | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_BIG)
 321                   | (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_BIG);
 322   } else {
 323     intern->rfd   = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_LITTLE)
 324                   | ((ext->r_bits[1] & RNDX_BITS1_RFD_LITTLE)
 325                                     << RNDX_BITS1_RFD_SH_LEFT_LITTLE);
 326     intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_LITTLE)
 327                                     >> RNDX_BITS1_INDEX_SH_LITTLE)
 328                   | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_LITTLE)
 329                   | (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_LITTLE);
 330   }
 331
 332 #ifdef TEST
 333   if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
 334     abort();
 335 #endif
 336 }