binutils-gdb/bfd/coff-msym.c

/* BFD support to byte-swap a symbol table in MIPS (Third-Eye, `ecoff') format.
   Copyright 1992 Free Software Foundation, Inc.

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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* These routines are not yet called from BFD.  They are called from
   the MIPS symbol reading code in GDB.  However, they are in the BFD
   library because they will eventually be useful if and when BFD
   supports reading or writing of MIPS symbol tables.

   The routines in this file convert the external representation of
   ECOFF symbol tables to the internal (usual struct) representation.
   On a machine with the same byte-order and the same basic type
   sizes and alignments as a MIPS machine, this is a no-op.  
   If the symbol TEST is defined when this file is compiled, a comparison
   is made to ensure that, in fact, the output is bit-for-bit the same as
   the input.  Of course, this symbol should only be defined when
   deliberately testing the code on a machine with the proper byte sex
   and such.  */

#include "bfd.h"
#include "coff/sym.h"		/* MIPS symbols */
#include "coff/symconst.h"	/* MIPS symbols */
#include "coff/ecoff-ext.h"	/* ECOFF external struct defns */

void
DEFUN (ecoff_swap_hdr_in, (abfd, ext_copy, intern),
       bfd *abfd AND
       struct hdr_ext *ext_copy AND
       HDRR *intern)
{
  struct hdr_ext ext[1];

  *ext = *ext_copy;

  intern->magic         = bfd_h_get_16 (abfd, (bfd_byte *)ext->h_magic);
  intern->vstamp        = bfd_h_get_16 (abfd, (bfd_byte *)ext->h_vstamp);
  intern->ilineMax      = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ilineMax);
  intern->cbLine        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbLine);
  intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbLineOffset);
  intern->idnMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_idnMax);
  intern->cbDnOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbDnOffset);
  intern->ipdMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ipdMax);
  intern->cbPdOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbPdOffset);
  intern->isymMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_isymMax);
  intern->cbSymOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSymOffset);
  intern->ioptMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ioptMax);
  intern->cbOptOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbOptOffset);
  intern->iauxMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_iauxMax);
  intern->cbAuxOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbAuxOffset);
  intern->issMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_issMax);
  intern->cbSsOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSsOffset);
  intern->issExtMax     = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_issExtMax);
  intern->cbSsExtOffset = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbSsExtOffset);
  intern->ifdMax        = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_ifdMax);
  intern->cbFdOffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbFdOffset);
  intern->crfd          = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_crfd);
  intern->cbRfdOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbRfdOffset);
  intern->iextMax       = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_iextMax);
  intern->cbExtOffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->h_cbExtOffset);

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}

/* Swap in the file descriptor record.  */

void
DEFUN (ecoff_swap_fdr_in, (abfd, ext_copy, intern),
       bfd *abfd AND
       struct fdr_ext *ext_copy AND
       FDR *intern)
{
  struct fdr_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  intern->adr           = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_adr);
  intern->rss           = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_rss);
  intern->issBase       = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_issBase);
  intern->cbSs          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbSs);
  intern->isymBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_isymBase);
  intern->csym          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_csym);
  intern->ilineBase     = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_ilineBase);
  intern->cline         = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cline);
  intern->ioptBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_ioptBase);
  intern->copt          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_copt);
  intern->ipdFirst      = bfd_h_get_16 (abfd, (bfd_byte *)ext->f_ipdFirst);
  intern->cpd           = bfd_h_get_16 (abfd, (bfd_byte *)ext->f_cpd);
  intern->iauxBase      = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_iauxBase);
  intern->caux          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_caux);
  intern->rfdBase       = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_rfdBase);
  intern->crfd          = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_crfd);

  /* now the fun stuff... */
  if (abfd->xvec->header_byteorder_big_p != false) {
    intern->lang        = (ext->f_bits1[0] & FDR_BITS1_LANG_BIG)
					>> FDR_BITS1_LANG_SH_BIG;
    intern->fMerge      = 0 != (ext->f_bits1[0] & FDR_BITS1_FMERGE_BIG);
    intern->fReadin     = 0 != (ext->f_bits1[0] & FDR_BITS1_FREADIN_BIG);
    intern->fBigendian  = 0 != (ext->f_bits1[0] & FDR_BITS1_FBIGENDIAN_BIG);
    intern->glevel      = (ext->f_bits2[0] & FDR_BITS2_GLEVEL_BIG)
					>> FDR_BITS2_GLEVEL_SH_BIG;
 /* intern->reserved  we ignore.  */
  } else {
    intern->lang        = (ext->f_bits1[0] & FDR_BITS1_LANG_LITTLE)
					>> FDR_BITS1_LANG_SH_LITTLE;
    intern->fMerge      = 0 != (ext->f_bits1[0] & FDR_BITS1_FMERGE_LITTLE);
    intern->fReadin     = 0 != (ext->f_bits1[0] & FDR_BITS1_FREADIN_LITTLE);
    intern->fBigendian  = 0 != (ext->f_bits1[0] & FDR_BITS1_FBIGENDIAN_LITTLE);
    intern->glevel      = (ext->f_bits2[0] & FDR_BITS2_GLEVEL_LITTLE)
					>> FDR_BITS2_GLEVEL_SH_LITTLE;
 /* intern->reserved  we ignore.  */
  }

  intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbLineOffset);
  intern->cbLine        = bfd_h_get_32 (abfd, (bfd_byte *)ext->f_cbLine);

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}



/* Swap in the procedure descriptor record.  */

void
DEFUN (ecoff_swap_pdr_in, (abfd, ext_copy, intern),
       bfd *abfd AND
       struct pdr_ext *ext_copy AND
       PDR *intern)
{
  struct pdr_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  intern->adr           = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_adr);
  intern->isym          = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_isym);
  intern->iline         = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_iline);
  intern->regmask       = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_regmask);
  intern->regoffset     = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_regoffset);
  intern->iopt          = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_iopt);
  intern->fregmask      = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_fregmask);
  intern->fregoffset    = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_fregoffset);
  intern->frameoffset   = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_frameoffset);
  intern->framereg      = bfd_h_get_16 (abfd, (bfd_byte *)ext->p_framereg);
  intern->pcreg         = bfd_h_get_16 (abfd, (bfd_byte *)ext->p_pcreg);
  intern->lnLow         = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_lnLow);
  intern->lnHigh        = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_lnHigh);
  intern->cbLineOffset  = bfd_h_get_32 (abfd, (bfd_byte *)ext->p_cbLineOffset);

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}


/* Swap in a symbol record.  */

void
DEFUN (ecoff_swap_sym_in, (abfd, ext_copy, intern),
       bfd *abfd AND
       struct sym_ext *ext_copy AND
       SYMR *intern)
{
  struct sym_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  intern->iss           = bfd_h_get_32 (abfd, (bfd_byte *)ext->s_iss);
  intern->value         = bfd_h_get_32 (abfd, (bfd_byte *)ext->s_value);

  /* now the fun stuff... */
  if (abfd->xvec->header_byteorder_big_p != false) {
    intern->st          =  (ext->s_bits1[0] & SYM_BITS1_ST_BIG)
					   >> SYM_BITS1_ST_SH_BIG;
    intern->sc          = ((ext->s_bits1[0] & SYM_BITS1_SC_BIG)
					   << SYM_BITS1_SC_SH_LEFT_BIG)
			| ((ext->s_bits2[0] & SYM_BITS2_SC_BIG)
					   >> SYM_BITS2_SC_SH_BIG);
    intern->reserved    = 0 != (ext->s_bits2[0] & SYM_BITS2_RESERVED_BIG);
    intern->index       = ((ext->s_bits2[0] & SYM_BITS2_INDEX_BIG)
					   << SYM_BITS2_INDEX_SH_LEFT_BIG)
			| (ext->s_bits3[0] << SYM_BITS3_INDEX_SH_LEFT_BIG)
			| (ext->s_bits4[0] << SYM_BITS4_INDEX_SH_LEFT_BIG);
  } else {
    intern->st          =  (ext->s_bits1[0] & SYM_BITS1_ST_LITTLE)
					   >> SYM_BITS1_ST_SH_LITTLE;
    intern->sc          = ((ext->s_bits1[0] & SYM_BITS1_SC_LITTLE)
					   >> SYM_BITS1_SC_SH_LITTLE)
			| ((ext->s_bits2[0] & SYM_BITS2_SC_LITTLE)
					   << SYM_BITS2_SC_SH_LEFT_LITTLE);
    intern->reserved    = 0 != (ext->s_bits2[0] & SYM_BITS2_RESERVED_LITTLE);
    intern->index       = ((ext->s_bits2[0] & SYM_BITS2_INDEX_LITTLE)
					   >> SYM_BITS2_INDEX_SH_LITTLE)
			| (ext->s_bits3[0] << SYM_BITS3_INDEX_SH_LEFT_LITTLE)
			| (ext->s_bits4[0] << SYM_BITS4_INDEX_SH_LEFT_LITTLE);
  }

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}


/* Swap in an external symbol record.  */

void
DEFUN (ecoff_swap_ext_in, (abfd, ext_copy, intern),
       bfd *abfd AND
       struct ext_ext *ext_copy AND
       EXTR *intern)
{
  struct ext_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  /* now the fun stuff... */
  if (abfd->xvec->header_byteorder_big_p != false) {
    intern->jmptbl      = 0 != (ext->es_bits1[0] & EXT_BITS1_JMPTBL_BIG);
    intern->cobol_main  = 0 != (ext->es_bits1[0] & EXT_BITS1_COBOL_MAIN_BIG);
    intern->weakext     = 0 != (ext->es_bits1[0] & EXT_BITS1_WEAKEXT_BIG);
  } else {
    intern->jmptbl      = 0 != (ext->es_bits1[0] & EXT_BITS1_JMPTBL_LITTLE);
    intern->cobol_main  = 0 != (ext->es_bits1[0] & EXT_BITS1_COBOL_MAIN_LITTLE);
    intern->weakext     = 0 != (ext->es_bits1[0] & EXT_BITS1_WEAKEXT_LITTLE);
  }

  intern->ifd           = bfd_h_get_16 (abfd, (bfd_byte *)ext->es_ifd);
  ecoff_swap_sym_in (abfd, &ext->es_asym, &intern->asym);

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}

/* Swap in a type information record.
   BIGEND says whether AUX symbols are big-endian or little-endian; this
   info comes from the file header record (fh-fBigendian).  */

void
DEFUN (ecoff_swap_tir_in, (bigend, ext_copy, intern),
       int bigend AND
       struct tir_ext *ext_copy AND
       TIR *intern)
{
  struct tir_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  /* now the fun stuff... */
  if (bigend) {
    intern->fBitfield   = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_BIG);
    intern->continued   = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_BIG);
    intern->bt          = (ext->t_bits1[0] & TIR_BITS1_BT_BIG)
			>>		    TIR_BITS1_BT_SH_BIG;
    intern->tq4         = (ext->t_tq45[0] & TIR_BITS_TQ4_BIG)
			>>		    TIR_BITS_TQ4_SH_BIG;
    intern->tq5         = (ext->t_tq45[0] & TIR_BITS_TQ5_BIG)
			>>		    TIR_BITS_TQ5_SH_BIG;
    intern->tq0         = (ext->t_tq01[0] & TIR_BITS_TQ0_BIG)
			>>		    TIR_BITS_TQ0_SH_BIG;
    intern->tq1         = (ext->t_tq01[0] & TIR_BITS_TQ1_BIG)
			>>		    TIR_BITS_TQ1_SH_BIG;
    intern->tq2         = (ext->t_tq23[0] & TIR_BITS_TQ2_BIG)
			>>		    TIR_BITS_TQ2_SH_BIG;
    intern->tq3         = (ext->t_tq23[0] & TIR_BITS_TQ3_BIG)
			>>		    TIR_BITS_TQ3_SH_BIG;
  } else {
    intern->fBitfield   = 0 != (ext->t_bits1[0] & TIR_BITS1_FBITFIELD_LITTLE);
    intern->continued   = 0 != (ext->t_bits1[0] & TIR_BITS1_CONTINUED_LITTLE);
    intern->bt          = (ext->t_bits1[0] & TIR_BITS1_BT_LITTLE)
			>>		    TIR_BITS1_BT_SH_LITTLE;
    intern->tq4         = (ext->t_tq45[0] & TIR_BITS_TQ4_LITTLE)
			>>		    TIR_BITS_TQ4_SH_LITTLE;
    intern->tq5         = (ext->t_tq45[0] & TIR_BITS_TQ5_LITTLE)
			>>		    TIR_BITS_TQ5_SH_LITTLE;
    intern->tq0         = (ext->t_tq01[0] & TIR_BITS_TQ0_LITTLE)
			>>		    TIR_BITS_TQ0_SH_LITTLE;
    intern->tq1         = (ext->t_tq01[0] & TIR_BITS_TQ1_LITTLE)
			>>		    TIR_BITS_TQ1_SH_LITTLE;
    intern->tq2         = (ext->t_tq23[0] & TIR_BITS_TQ2_LITTLE)
			>>		    TIR_BITS_TQ2_SH_LITTLE;
    intern->tq3         = (ext->t_tq23[0] & TIR_BITS_TQ3_LITTLE)
			>>		    TIR_BITS_TQ3_SH_LITTLE;
  }

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}

/* Swap in a relative symbol record.  BIGEND says whether it is in
   big-endian or little-endian format.*/

void
DEFUN (ecoff_swap_rndx_in, (bigend, ext_copy, intern),
       int bigend AND
       struct rndx_ext *ext_copy AND
       RNDXR *intern)
{
  struct rndx_ext ext[1];

  *ext = *ext_copy;		/* Make it reasonable to do in-place.  */
  
  /* now the fun stuff... */
  if (bigend) {
    intern->rfd   = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_BIG)
		  | ((ext->r_bits[1] & RNDX_BITS1_RFD_BIG)
		    		    >> RNDX_BITS1_RFD_SH_BIG);
    intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_BIG)
		    		    << RNDX_BITS1_INDEX_SH_LEFT_BIG)
		  | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_BIG)
		  | (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_BIG);
  } else {
    intern->rfd   = (ext->r_bits[0] << RNDX_BITS0_RFD_SH_LEFT_LITTLE)
		  | ((ext->r_bits[1] & RNDX_BITS1_RFD_LITTLE)
		    		    << RNDX_BITS1_RFD_SH_LEFT_LITTLE);
    intern->index = ((ext->r_bits[1] & RNDX_BITS1_INDEX_LITTLE)
		    		    >> RNDX_BITS1_INDEX_SH_LITTLE)
		  | (ext->r_bits[2] << RNDX_BITS2_INDEX_SH_LEFT_LITTLE)
		  | (ext->r_bits[3] << RNDX_BITS3_INDEX_SH_LEFT_LITTLE);
  }

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}

/* Swap in a relative file descriptor.  */

void
DEFUN (ecoff_swap_rfd_in, (abfd, ext, intern),
       bfd *abfd AND
       struct rfd_ext *ext AND
       RFDT *intern)
{
  
  *intern = bfd_h_get_32 (abfd, (bfd_byte *)ext->rfd);

#ifdef TEST
  if (memcmp ((char *)ext, (char *)intern, sizeof (*intern)) != 0)
    abort();
#endif
}