gas/config/obj-som.c

   1 /* SOM object file format.
   2    Copyright (C) 1993 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as
   8    published by the Free Software Foundation; either version 2,
   9    or (at your option) any later version.
  10
  11    GAS is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  14    the GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public
  17    License along with GAS; see the file COPYING.  If not, write
  18    to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  19
  20    Written by the Center for Software Science at the University of Utah
  21    and by Cygnus Support.  */
  22
  23 #include "as.h"
  24 #include "subsegs.h"
  25 #include "aout/stab_gnu.h"
  26 #include "obstack.h"
  27
  28 /* SOM does not need any pseudo-ops.  */
  29
  30 const pseudo_typeS obj_pseudo_table[] =
  31 {
  32   {NULL}
  33 };
  34
  35 /* SOM does not use this.  */
  36
  37 void
  38 obj_read_begin_hook ()
  39 {
  40 }
  41
  42 /* Handle a .version directive.  FIXME.  We just parse the .version
  43    directive and throw away the results!.  */
  44
  45 void
  46 obj_som_version (unused)
  47      int unused;
  48 {
  49   SKIP_WHITESPACE ()
  50   if (*input_line_pointer == '\"')
  51     {
  52       ++input_line_pointer;
  53       while (is_a_char (next_char_of_string ()))
  54         ;
  55     }
  56   else
  57     {
  58       as_bad ("Expected quoted string");
  59     }
  60   demand_empty_rest_of_line ();
  61 }
  62
  63 /* Perform any initialization necessary for stabs support.
  64
  65    For SOM we need to create the space which will contain the
  66    two stabs subspaces.  Additionally we need to set up the
  67    space/subspace relationships and set space/subspace attributes
  68    which BFD does not understand.  */
  69
  70 void
  71 obj_som_init_stab_section (seg)
  72      segT seg;
  73 {
  74   segT saved_seg = now_seg, space;
  75   subsegT saved_subseg = now_subseg;
  76
  77   /* Make the space which will contain the debug subspaces.  */
  78   space = bfd_make_section_old_way (stdoutput, "$GDB_DEBUG$");
  79
  80   /* Set SOM specific attributes for the space.  In particular we set
  81      the space "defined", "private", "sort_key", and "spnum" values.  */
  82   obj_set_section_attributes (space, 1, 1, 255, 2);
  83
  84   /* Set the containing space for both stab sections to be $GDB_DEBUG$
  85      (just created above).  Also set some attributes which BFD does
  86      not understand.  In particular, access bits, sort keys, and load
  87      quadrant.  */
  88   obj_set_subsection_attributes (seg, space, 0x1f, 255, 0);
  89
  90   /* Likewise for the $GDB_STRINGS$ subspace.  Note the section
  91      hasn't been created at the time of this call, so we create
  92      it now.  */
  93   seg = subseg_new ("$GDB_STRINGS$", 0);
  94   obj_set_subsection_attributes (seg, space, 0x1f, 254, 0);
  95
  96   subseg_set (saved_seg, saved_subseg);
  97 }