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/* vms-gsd.c -- BFD back-end for VAX (openVMS/VAX) and
   EVAX (openVMS/Alpha) files.
   Copyright 1996, 1997, 1998, 1999 Free Software Foundation Inc.
 
   go and read the openVMS linker manual (esp. appendix B)
   if you don't know what's going on here :-)
 
   Written by Klaus K"ampf (kkaempf@rmi.de)
 
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 
#include <ctype.h>
 
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
 
#include "vms.h"
 
/*-----------------------------------------------------------------------------*/
 
/* typical sections for vax object files  */
 
#define VAX_CODE_NAME           "$CODE"
#define VAX_DATA_NAME           "$DATA"
#define VAX_ADDRESS_DATA_NAME   "$ADDRESS_DATA"
 
/* typical sections for evax object files  */
 
#define EVAX_ABS_NAME           "$ABS$"
#define EVAX_CODE_NAME          "$CODE$"
#define EVAX_LINK_NAME          "$LINK$"
#define EVAX_DATA_NAME          "$DATA$"
#define EVAX_BSS_NAME           "$BSS$"
#define EVAX_READONLYADDR_NAME  "$READONLY_ADDR$"
#define EVAX_READONLY_NAME      "$READONLY$"
#define EVAX_LITERAL_NAME       "$LITERAL$"
#define EVAX_COMMON_NAME        "$COMMON$"
#define EVAX_LOCAL_NAME         "$LOCAL$"
 
struct sec_flags_struct {
  char *name;                   /* name of section */
  int vflags_always;
  flagword flags_always;        /* flags we set always */
  int vflags_hassize;
  flagword flags_hassize;       /* flags we set if the section has a size > 0 */
};
 
/* These flags are deccrtl/vaxcrtl (openVMS 6.2 VAX) compatible  */
 
static struct sec_flags_struct vax_section_flags[] = {
  { VAX_CODE_NAME,
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
        (SEC_CODE),
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE|GPS_S_M_RD),
        (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { VAX_DATA_NAME,
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
        (SEC_DATA),
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { VAX_ADDRESS_DATA_NAME,
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
        (SEC_DATA|SEC_READONLY),
        (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  { NULL,
        (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
        (SEC_DATA),
        (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD|GPS_S_M_WRT),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
};
 
 
/* These flags are deccrtl/vaxcrtl (openVMS 6.2 Alpha) compatible  */
 
static struct sec_flags_struct evax_section_flags[] = {
  { EVAX_ABS_NAME,
        (EGPS_S_V_SHR),
        (SEC_DATA),
        (EGPS_S_V_SHR),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { EVAX_CODE_NAME,
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
        (SEC_CODE),
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_EXE),
        (SEC_IN_MEMORY|SEC_CODE|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { EVAX_LITERAL_NAME,
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
        (SEC_DATA|SEC_READONLY),
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  { EVAX_LINK_NAME,
        (EGPS_S_V_REL|EGPS_S_V_RD),
        (SEC_DATA|SEC_READONLY),
        (EGPS_S_V_REL|EGPS_S_V_RD),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  { EVAX_DATA_NAME,
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
        (SEC_DATA),
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { EVAX_BSS_NAME,
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
        (SEC_NO_FLAGS),
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT|EGPS_S_V_NOMOD),
        (SEC_IN_MEMORY|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { EVAX_READONLYADDR_NAME,
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
        (SEC_DATA|SEC_READONLY),
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_RD),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  { EVAX_READONLY_NAME,
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD|EGPS_S_V_NOMOD),
        (SEC_DATA|SEC_READONLY),
        (EGPS_S_V_PIC|EGPS_S_V_REL|EGPS_S_V_SHR|EGPS_S_V_RD),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_READONLY|SEC_LOAD) },
  { EVAX_LOCAL_NAME,
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
        (SEC_DATA),
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) },
  { NULL,
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
        (SEC_DATA),
        (EGPS_S_V_REL|EGPS_S_V_RD|EGPS_S_V_WRT),
        (SEC_IN_MEMORY|SEC_DATA|SEC_HAS_CONTENTS|SEC_ALLOC|SEC_LOAD) }
};
 
/* Retrieve bfd section flags by name and size  */
 
static flagword
vms_secflag_by_name (abfd, section_flags, name, size)
     bfd *abfd;
     struct sec_flags_struct *section_flags;
     char *name;
     int size;
{
  int i = 0;
 
  while (section_flags[i].name != NULL)
    {
      if ((PRIV(is_vax)?
            strcasecmp (name, section_flags[i].name):
            strcmp (name, section_flags[i].name)) == 0)
        {
          if (size > 0)
            return section_flags[i].flags_hassize;
          else
            return section_flags[i].flags_always;
        }
      i++;
    }
  if (size > 0)
    return section_flags[i].flags_hassize;
  return section_flags[i].flags_always;
}
 
 
/* Retrieve vms section flags by name and size  */
 
static flagword
vms_esecflag_by_name (section_flags, name, size)
     struct sec_flags_struct *section_flags;
     char *name;
     int size;
{
  int i = 0;
 
  while (section_flags[i].name != NULL)
    {
      if (strcmp (name, section_flags[i].name) == 0)
        {
          if (size > 0)
            return section_flags[i].vflags_hassize;
          else
            return section_flags[i].vflags_always;
        }
      i++;
    }
  if (size > 0)
    return section_flags[i].vflags_hassize;
  return section_flags[i].vflags_always;
}
 
/*-----------------------------------------------------------------------------*/
#if VMS_DEBUG
/* debug */
 
struct flagdescstruct { char *name; flagword value; };
 
/* Convert flag to printable string  */
 
static char *
flag2str(flagdesc, flags)
     struct flagdescstruct *flagdesc;
     flagword flags;
{
 
  static char res[64];
  int next = 0;
 
  res[0] = 0;
  while (flagdesc->name != NULL)
    {
      if ((flags & flagdesc->value) != 0)
        {
          if (next)
            strcat(res, ",");
          else
            next = 1;
          strcat (res, flagdesc->name);
        }
      flagdesc++;
    }
  return res;
}
#endif
 
/*-----------------------------------------------------------------------------*/
/* input routines */
 
/* Process GSD/EGSD record
   return 0 on success, -1 on error  */
 
int
_bfd_vms_slurp_gsd (abfd, objtype)
     bfd *abfd;
     int objtype;
{
#if VMS_DEBUG
  static struct flagdescstruct gpsflagdesc[] =
  {
    { "PIC", 0x0001 },
    { "LIB", 0x0002 },
    { "OVR", 0x0004 },
    { "REL", 0x0008 },
    { "GBL", 0x0010 },
    { "SHR", 0x0020 },
    { "EXE", 0x0040 },
    { "RD",  0x0080 },
    { "WRT", 0x0100 },
    { "VEC", 0x0200 },
    { "NOMOD", 0x0400 },
    { "COM", 0x0800 },
    { NULL, 0 }
  };
 
  static struct flagdescstruct gsyflagdesc[] =
  {
    { "WEAK", 0x0001 },
    { "DEF",  0x0002 },
    { "UNI",  0x0004 },
    { "REL",  0x0008 },
    { "COMM", 0x0010 },
    { "VECEP", 0x0020 },
    { "NORM", 0x0040 },
    { NULL, 0 }
  };
#endif
 
  int gsd_type, gsd_size;
  asection *section;
  unsigned char *vms_rec;
  flagword new_flags, old_flags;
  char *name;
  asymbol *symbol;
  vms_symbol_entry *entry;
  unsigned long base_addr;
  unsigned long align_addr;
  static unsigned int psect_idx = 0;
 
#if VMS_DEBUG
  vms_debug (2, "GSD/EGSD (%d/%x)\n", objtype, objtype);
#endif
 
  switch (objtype)
    {
      case EOBJ_S_C_EGSD:
        PRIV(vms_rec) += 8;     /* skip type, size, l_temp */
        PRIV(rec_size) -= 8;
        break;
      case OBJ_S_C_GSD:
        PRIV(vms_rec) += 1;
        PRIV(rec_size) -= 1;
        break;
      default:
        return -1;
    }
 
  /* calculate base address for each section  */
  base_addr = 0L;
 
  abfd->symcount = 0;
 
  while (PRIV(rec_size) > 0)
    {
      vms_rec = PRIV(vms_rec);
 
      if (objtype == OBJ_S_C_GSD)
        {
          gsd_type = *vms_rec;
        }
      else
        {
          _bfd_vms_get_header_values (abfd, vms_rec, &gsd_type, &gsd_size);
          gsd_type += EVAX_OFFSET;
        }
 
#if VMS_DEBUG
  vms_debug (3, "gsd_type %d\n", gsd_type);
#endif
 
      switch (gsd_type)
        {
          case GSD_S_C_PSC:
            {
              /*
               * program section definition
               */
 
              asection *old_section = 0;
 
#if VMS_DEBUG
  vms_debug (4, "GSD_S_C_PSC\n");
#endif
              /* If this section isn't a bfd section.  */
 
              if (PRIV(is_vax) && (psect_idx < (abfd->section_count-1)))
                {
                  /* check for temporary section from TIR record.  */
 
                  if (psect_idx < PRIV(section_count))
                    old_section = PRIV(sections)[psect_idx];
                  else
                    old_section = 0;
                }
 
              name = _bfd_vms_save_counted_string (vms_rec + 8);
              section = bfd_make_section (abfd, name);
              if (!section)
                {
                  (*_bfd_error_handler) (_("bfd_make_section (%s) failed"),
                                         name);
                  return -1;
                }
              old_flags = bfd_getl16 (vms_rec + 2);
              section->_raw_size = bfd_getl32(vms_rec + 4);     /* allocation */
              new_flags = vms_secflag_by_name (abfd, vax_section_flags, name, section->_raw_size);
              if (old_flags & EGPS_S_V_REL)
                new_flags |= SEC_RELOC;
              if (old_flags & GPS_S_M_OVR)
                new_flags |= SEC_IS_COMMON;
              if (!bfd_set_section_flags (abfd, section, new_flags))
                {
                  (*_bfd_error_handler)
                    (_("bfd_set_section_flags (%s, %x) failed"),
                     name, new_flags);
                  return -1;
                }
              section->alignment_power = vms_rec[1];
              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;
 
              /* global section is common symbol  */
 
              if (old_flags & GPS_S_M_GBL)
                {
                  entry = _bfd_vms_enter_symbol (abfd, name);
                  if (entry == (vms_symbol_entry *)NULL)
                    {
                      bfd_set_error (bfd_error_no_memory);
                      return -1;
                    }
                  symbol = entry->symbol;
 
                  symbol->value = 0;
                  symbol->section = section;
                  symbol->flags = (BSF_GLOBAL|BSF_SECTION_SYM|BSF_OLD_COMMON);
                }
 
              /* copy saved contents if old_section set  */
 
              if (old_section != 0)
                {
                  section->contents = old_section->contents;
                  if (section->_raw_size < old_section->_raw_size)
                    {
                      (*_bfd_error_handler)
                        (_("Size mismatch section %s=%lx, %s=%lx"),
                         old_section->name,
                         (unsigned long) old_section->_raw_size,
                         section->name,
                         (unsigned long) section->_raw_size);
                      return -1;
                    }
                  else if (section->_raw_size > old_section->_raw_size)
                    {
                      section->contents = ((unsigned char *)
                                    bfd_realloc (old_section->contents, section->_raw_size));
                      if (section->contents == NULL)
                        {
                          bfd_set_error (bfd_error_no_memory);
                          return -1;
                        }
                    }
                }
              else
                {
                  section->contents = ((unsigned char *)
                                        bfd_malloc (section->_raw_size));
                  if (section->contents == NULL)
                    {
                      bfd_set_error (bfd_error_no_memory);
                      return -1;
                    }
                  memset (section->contents, 0, (size_t)section->_raw_size);
                }
              section->_cooked_size = section->_raw_size;
#if VMS_DEBUG
              vms_debug (4, "gsd 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
 
              gsd_size = vms_rec[8] + 9;
 
              psect_idx++;
            }
          break;
 
          case GSD_S_C_EPM:
          case GSD_S_C_EPMW:
#if VMS_DEBUG
                vms_debug(4, "gsd epm\n");
#endif
          /*FALLTHRU*/
          case GSD_S_C_SYM:
          case GSD_S_C_SYMW:
            {
              int name_offset, value_offset;
 
              /*
               * symbol specification (definition or reference)
               */
 
#if VMS_DEBUG
  vms_debug (4, "GSD_S_C_SYM(W)\n");
#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;
}
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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [bfd/] [vms-gsd.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	104	markom	`/* vms-gsd.c -- BFD back-end for VAX (openVMS/VAX) and`
2			`EVAX (openVMS/Alpha) files.`
3			`Copyright 1996, 1997, 1998, 1999 Free Software Foundation Inc.`
4
5			`go and read the openVMS linker manual (esp. appendix B)`
6			`if you don't know what's going on here :-)`
7
8			`Written by Klaus K"ampf (kkaempf@rmi.de)`
9
10			`This program is free software; you can redistribute it and/or modify`
11			`it under the terms of the GNU General Public License as published by`
12			`the Free Software Foundation; either version 2 of the License, or`
13			`(at your option) any later version.`
14
15			`This program is distributed in the hope that it will be useful,`
16			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
17			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
18			`GNU General Public License for more details.`
19
20			`You should have received a copy of the GNU General Public License`
21			`along with this program; if not, write to the Free Software`
22			`Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */`
23
24
25			`#include <ctype.h>`
26
27			`#include "bfd.h"`
28			`#include "sysdep.h"`
29			`#include "bfdlink.h"`
30			`#include "libbfd.h"`
31
32			`#include "vms.h"`
33
34			`/-----------------------------------------------------------------------------/`
35
36			`/* typical sections for vax object files */`
37
38			`#define VAX_CODE_NAME "$CODE"`
39			`#define VAX_DATA_NAME "$DATA"`
40			`#define VAX_ADDRESS_DATA_NAME "$ADDRESS_DATA"`