vms-gsd.c

基于4个mips核的noc设计

#endif
	      old_flags = bfd_getl16 (vms_rec + 2);
	      new_flags = BSF_NO_FLAGS;

	      if (old_flags & GSY_S_M_WEAK)
		new_flags |= BSF_WEAK;

	      switch (gsd_type)
		{
		  case GSD_S_C_EPM:
		    name_offset = 11;
		    value_offset = 5;
		    new_flags |= BSF_FUNCTION;
		    break;
		  case GSD_S_C_EPMW:
		    name_offset = 12;
		    value_offset = 6;
		    new_flags |= BSF_FUNCTION;
		    break;
		  case GSD_S_C_SYM:
		    if (old_flags & GSY_S_M_DEF)	/* symbol definition */
		      name_offset = 9;
		    else
		      name_offset = 4;
		    value_offset = 5;
		    break;
		  case GSD_S_C_SYMW:
		    if (old_flags & GSY_S_M_DEF)	/* symbol definition */
		      name_offset = 10;
		    else
		      name_offset = 5;
		    value_offset = 6;
		    break;
		}

	      /* save symbol in vms_symbol_table */

	      entry = _bfd_vms_enter_symbol (abfd,
			_bfd_vms_save_counted_string (vms_rec + name_offset));
	      if (entry == (vms_symbol_entry *)NULL)
		{
		  bfd_set_error (bfd_error_no_memory);
		  return -1;
		}
	      symbol = entry->symbol;

	      if (old_flags & GSY_S_M_DEF)	/* symbol definition */
		{
		  int psect;

		  symbol->value = bfd_getl32 (vms_rec+value_offset);
		  if ((gsd_type == GSD_S_C_SYMW)
		      || (gsd_type == GSD_S_C_EPMW))
		    psect = bfd_getl16 (vms_rec + value_offset - 2);
		  else
		    psect = vms_rec[value_offset-1];

		  symbol->section = (asection *)psect;
#if VMS_DEBUG
		  vms_debug(4, "gsd sym def #%d (%s, %d [%p], %04x=%s)\n", abfd->symcount,
				symbol->name, (int)symbol->section, symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
#endif
		}
	      else	/* symbol reference */
		{
		  symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
#if VMS_DEBUG
		  vms_debug (4, "gsd sym ref #%d (%s, %s [%p], %04x=%s)\n", abfd->symcount,
				symbol->name, symbol->section->name, symbol->section, old_flags, flag2str (gsyflagdesc, old_flags));
#endif
		}

	      gsd_size = vms_rec[name_offset] + name_offset + 1;
	      symbol->flags = new_flags;
	    }

	  break;

	  case GSD_S_C_PRO:
	  case GSD_S_C_PROW:
#if VMS_DEBUG
		vms_debug(4, "gsd pro\n");
#endif
	  break;
	  case GSD_S_C_IDC:
#if VMS_DEBUG
		vms_debug(4, "gsd idc\n");
#endif
	  break;
	  case GSD_S_C_ENV:
#if VMS_DEBUG
		vms_debug(4, "gsd env\n");
#endif
	  break;
	  case GSD_S_C_LSY:
#if VMS_DEBUG
		vms_debug(4, "gsd lsy\n");
#endif
	  break;
	  case GSD_S_C_LEPM:
#if VMS_DEBUG
		vms_debug(4, "gsd lepm\n");
#endif
	  break;
	  case GSD_S_C_LPRO:
#if VMS_DEBUG
		vms_debug(4, "gsd lpro\n");
#endif
	  break;
	  case GSD_S_C_SPSC:
#if VMS_DEBUG
		vms_debug(4, "gsd spsc\n");
#endif
	  break;
	  case GSD_S_C_SYMV:
#if VMS_DEBUG
		vms_debug(4, "gsd symv\n");
#endif
	  break;
	  case GSD_S_C_EPMV:
#if VMS_DEBUG
		vms_debug(4, "gsd epmv\n");
#endif
	  break;
	  case GSD_S_C_PROV:
#if VMS_DEBUG
		vms_debug(4, "gsd prov\n");
#endif
	  break;

	case EGSD_S_C_PSC + EVAX_OFFSET:
	  {
	    /* program section definition  */

	    name = _bfd_vms_save_counted_string (vms_rec+12);
	    section = bfd_make_section (abfd, name);
	    if (!section)
	      return -1;
	    old_flags = bfd_getl16 (vms_rec + 6);
	    section->_raw_size = bfd_getl32 (vms_rec + 8);	/* allocation */
	    new_flags = vms_secflag_by_name (abfd, evax_section_flags, name, (int) section->_raw_size);
	    if (old_flags & EGPS_S_V_REL)
	      new_flags |= SEC_RELOC;
	    if (!bfd_set_section_flags (abfd, section, new_flags))
	      return -1;
	    section->alignment_power = vms_rec[4];
	    align_addr = (1 << section->alignment_power);
	    if ((base_addr % align_addr) != 0)
	      base_addr += (align_addr - (base_addr % align_addr));
	    section->vma = (bfd_vma)base_addr;
	    base_addr += section->_raw_size;
	    section->contents = ((unsigned char *)
				 bfd_malloc (section->_raw_size));
	    if (section->contents == NULL)
	      return -1;
	    memset (section->contents, 0, (size_t) section->_raw_size);
	    section->_cooked_size = section->_raw_size;
#if VMS_DEBUG
	    vms_debug(4, "egsd psc %d (%s, flags %04x=%s) ",
		       section->index, name, old_flags, flag2str(gpsflagdesc, old_flags));
	    vms_debug(4, "%d bytes at 0x%08lx (mem %p)\n",
		       section->_raw_size, section->vma, section->contents);
#endif
	  }
	  break;

	case EGSD_S_C_SYM + EVAX_OFFSET:
	  {
	    /* symbol specification (definition or reference)  */

	    symbol = _bfd_vms_make_empty_symbol (abfd);
	    if (symbol == 0)
	      return -1;

	    old_flags = bfd_getl16 (vms_rec + 6);
	    new_flags = BSF_NO_FLAGS;

	    if (old_flags & EGSY_S_V_WEAK)
	      new_flags |= BSF_WEAK;

	    if (vms_rec[6] & EGSY_S_V_DEF)	/* symbol definition */
	      {
		symbol->name =
		  _bfd_vms_save_counted_string (vms_rec+32);
		if (old_flags & EGSY_S_V_NORM)
		  {         /* proc def */
		    new_flags |= BSF_FUNCTION;
		  }
		symbol->value = bfd_getl64 (vms_rec+8);
		symbol->section = (asection *) ((unsigned long) bfd_getl32 (vms_rec+28));
#if VMS_DEBUG
		vms_debug(4, "egsd sym def #%d (%s, %d, %04x=%s)\n", abfd->symcount,
			   symbol->name, (int)symbol->section, old_flags, flag2str(gsyflagdesc, old_flags));
#endif
	      }
	    else	/* symbol reference */
	      {
	        symbol->name =
		  _bfd_vms_save_counted_string (vms_rec+8);
#if VMS_DEBUG
		vms_debug(4, "egsd sym ref #%d (%s, %04x=%s)\n", abfd->symcount,
			   symbol->name, old_flags, flag2str(gsyflagdesc, old_flags));
#endif
	        symbol->section = bfd_make_section (abfd, BFD_UND_SECTION_NAME);
	      }

	    symbol->flags = new_flags;

	    /* save symbol in vms_symbol_table  */

	    entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV(vms_symbol_table), symbol->name, true, false);
	    if (entry == (vms_symbol_entry *)NULL)
	      {
		bfd_set_error (bfd_error_no_memory);
		return -1;
	      }
	    if (entry->symbol != (asymbol *)NULL)
	      {					/* FIXME ?, DEC C generates this */
#if VMS_DEBUG
		vms_debug(4, "EGSD_S_C_SYM: duplicate \"%s\"\n", symbol->name);
#endif
	      }
	    else
	      {
		entry->symbol = symbol;
		PRIV(gsd_sym_count)++;
		abfd->symcount++;
	      }
	  }
	  break;

	case EGSD_S_C_IDC + EVAX_OFFSET:
	  break;

	default:
	  (*_bfd_error_handler) (_("unknown gsd/egsd subtype %d"), gsd_type);
	  bfd_set_error (bfd_error_bad_value);
	  return -1;

	} /* switch */

      PRIV(rec_size) -= gsd_size;
      PRIV(vms_rec) += gsd_size;

    } /* while (recsize > 0) */

  if (abfd->symcount > 0)
    abfd->flags |= HAS_SYMS;

  return 0;
}

/*-----------------------------------------------------------------------------*/
/* output routines */

/* Write section and symbol directory of bfd abfd  */

int
_bfd_vms_write_gsd (abfd, objtype)
     bfd *abfd;
     int objtype ATTRIBUTE_UNUSED;
{
  asection *section;
  asymbol *symbol;
  unsigned int symnum;
  int last_index = -1;
  char dummy_name[10];
  char *sname;
  flagword new_flags, old_flags;

#if VMS_DEBUG
  vms_debug (2, "vms_write_gsd (%p, %d)\n", abfd, objtype);
#endif

  /* output sections  */

  section = abfd->sections;
#if VMS_DEBUG
  vms_debug (3, "%d sections found\n", abfd->section_count);
#endif

  /* egsd is quadword aligned  */

  _bfd_vms_output_alignment (abfd, 8);

  _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
  _bfd_vms_output_long (abfd, 0);
  _bfd_vms_output_push (abfd);		/* prepare output for subrecords */

  while (section != 0)
    {
#if VMS_DEBUG
  vms_debug (3, "Section #%d %s, %d bytes\n", section->index, section->name, (int)section->_raw_size);
#endif

	/* 13 bytes egsd, max 31 chars name -> should be 44 bytes */
      if (_bfd_vms_output_check (abfd, 64) < 0)
	{
	  _bfd_vms_output_pop (abfd);
	  _bfd_vms_output_end (abfd);
	  _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
	  _bfd_vms_output_long (abfd, 0);
	  _bfd_vms_output_push (abfd);		/* prepare output for subrecords */
	}

	/* Create dummy sections to keep consecutive indices */

      while (section->index - last_index > 1)
	{
#if VMS_DEBUG
	  vms_debug (3, "index %d, last %d\n", section->index, last_index);
#endif
	  _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
	  _bfd_vms_output_short (abfd, 0);
	  _bfd_vms_output_short (abfd, 0);
	  _bfd_vms_output_long (abfd, 0);
	  sprintf (dummy_name, ".DUMMY%02d", last_index);
	  _bfd_vms_output_counted (abfd, dummy_name);
	  _bfd_vms_output_flush (abfd);
	  last_index++;
	}

      /* Don't know if this is neccesary for the linker but for now it keeps
	 vms_slurp_gsd happy  */

      sname = (char *)section->name;
      if (*sname == '.')
	{
	  sname++;
	  if ((*sname == 't') && (strcmp (sname, "text") == 0))
	    sname = PRIV(is_vax)?VAX_CODE_NAME:EVAX_CODE_NAME;
	  else if ((*sname == 'd') && (strcmp (sname, "data") == 0))
	    sname = PRIV(is_vax)?VAX_DATA_NAME:EVAX_DATA_NAME;
	  else if ((*sname == 'b') && (strcmp (sname, "bss") == 0))
	    sname = EVAX_BSS_NAME;
	  else if ((*sname == 'l') && (strcmp (sname, "link") == 0))
	    sname = EVAX_LINK_NAME;
	  else if ((*sname == 'r') && (strcmp (sname, "rdata") == 0))
	    sname = EVAX_READONLY_NAME;
	  else if ((*sname == 'l') && (strcmp (sname, "literal") == 0))
	    sname = EVAX_LITERAL_NAME;
	  else if ((*sname == 'c') && (strcmp (sname, "comm") == 0))
	    sname = EVAX_COMMON_NAME;
	  else if ((*sname == 'l') && (strcmp (sname, "lcomm") == 0))
	    sname = EVAX_LOCAL_NAME;
	}
      else
	sname = _bfd_vms_length_hash_symbol (abfd, sname, EOBJ_S_C_SECSIZ);

      _bfd_vms_output_begin (abfd, EGSD_S_C_PSC, -1);
      _bfd_vms_output_short (abfd, section->alignment_power & 0xff);
      if (bfd_is_com_section (section))
	{
	  new_flags = (EGPS_S_V_OVR|EGPS_S_V_REL|EGPS_S_V_GBL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD|EGPS_S_V_COM);
	}
      else
	{
	  new_flags = vms_esecflag_by_name (evax_section_flags, sname, section->_raw_size);
	}
      _bfd_vms_output_short (abfd, new_flags);
      _bfd_vms_output_long (abfd, section->_raw_size);
      _bfd_vms_output_counted (abfd, sname);
      _bfd_vms_output_flush (abfd);

      last_index = section->index;
      section = section->next;
    }

  /* output symbols  */

#if VMS_DEBUG
  vms_debug (3, "%d symbols found\n", abfd->symcount);
#endif

  bfd_set_start_address (abfd, (bfd_vma)-1);

  for (symnum = 0; symnum < abfd->symcount; symnum++)
    {

      symbol = abfd->outsymbols[symnum];
      if (*(symbol->name) == '_')
	{
	  if (strcmp (symbol->name, "__main") == 0)
	    bfd_set_start_address (abfd, (bfd_vma)symbol->value);
	}
      old_flags = symbol->flags;

      if (old_flags & BSF_FILE)
	continue;

      if (((old_flags & (BSF_GLOBAL|BSF_WEAK)) == 0)	/* not xdef */
	  && (!bfd_is_und_section (symbol->section)))	/* and not xref */
	continue;					/* dont output */

      /* 13 bytes egsd, max 64 chars name -> should be 77 bytes  */

      if (_bfd_vms_output_check (abfd, 80) < 0)
	{
	  _bfd_vms_output_pop (abfd);
	  _bfd_vms_output_end (abfd);
	  _bfd_vms_output_begin (abfd, EOBJ_S_C_EGSD, -1);
	  _bfd_vms_output_long (abfd, 0);
	  _bfd_vms_output_push (abfd);		/* prepare output for subrecords */
	}

      _bfd_vms_output_begin (abfd, EGSD_S_C_SYM, -1);

      _bfd_vms_output_short (abfd, 0);			/* data type, alignment */

      new_flags = 0;

      if (old_flags & BSF_WEAK)
	new_flags |= EGSY_S_V_WEAK;
      if (bfd_is_com_section (symbol->section))		/* .comm  */
	new_flags |= (EGSY_S_V_WEAK|EGSY_S_V_COMM);

      if (old_flags & BSF_FUNCTION)
	{
	  new_flags |= EGSY_S_V_NORM;
	  new_flags |= EGSY_S_V_REL;
	}
      if (old_flags & (BSF_GLOBAL|BSF_WEAK))
	{
	  new_flags |= EGSY_S_V_DEF;
	  if (!bfd_is_abs_section (symbol->section))
	    new_flags |= EGSY_S_V_REL;
	}
      _bfd_vms_output_short (abfd, new_flags);

      if (old_flags & (BSF_GLOBAL|BSF_WEAK))		/* symbol definition */
	{
	  if (old_flags & BSF_FUNCTION)
	    {
	      _bfd_vms_output_quad (abfd, symbol->value);
	      _bfd_vms_output_quad (abfd,
				     ((asymbol *) (symbol->udata.p))->value);
	      _bfd_vms_output_long (abfd,
				     (((asymbol *) (symbol->udata.p))
				      ->section->index));
	      _bfd_vms_output_long (abfd, symbol->section->index);
	    }
	  else
	    {
	      _bfd_vms_output_quad (abfd, symbol->value);	/* L_VALUE */
	      _bfd_vms_output_quad (abfd, 0);			/* L_CODE_ADDRESS */
	      _bfd_vms_output_long (abfd, 0);			/* L_CA_PSINDX */
	      _bfd_vms_output_long (abfd, symbol->section->index);/* L_PSINDX */
	    }
	}
      _bfd_vms_output_counted (abfd, _bfd_vms_length_hash_symbol (abfd, symbol->name, EOBJ_S_C_SYMSIZ));

      _bfd_vms_output_flush (abfd);

    }

  _bfd_vms_output_alignment (abfd, 8);
  _bfd_vms_output_pop (abfd);
  _bfd_vms_output_end (abfd);

  return 0;
}