Line data    Source code

       1             : /* Create new subsection section in given section.
       2             :    Copyright (C) 2002 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <stdlib.h>
      35             : 
      36             : #include <libasmP.h>
      37             : #include <system.h>
      38             : 
      39             : 
      40             : AsmScn_t *
      41           2 : asm_newsubscn (AsmScn_t *asmscn, unsigned int nr)
      42             : {
      43             :   AsmScn_t *runp;
      44             :   AsmScn_t *newp;
      45             : 
      46             :   /* Just return if no section is given.  The error must have been
      47             :      somewhere else.  */
      48           2 :   if (asmscn == NULL)
      49             :     return NULL;
      50             : 
      51             :   /* Determine whether there is already a subsection with this number.  */
      52           2 :   runp = asmscn->subsection_id == 0 ? asmscn : asmscn->data.up;
      53             :   while (1)
      54             :     {
      55           2 :       if (runp->subsection_id == nr)
      56             :         /* Found it.  */
      57             :         return runp;
      58             : 
      59           2 :       if (runp->subnext == NULL || runp->subnext->subsection_id > nr)
      60             :         break;
      61             : 
      62             :       runp = runp->subnext;
      63             :     }
      64             : 
      65           2 :   newp = (AsmScn_t *) malloc (sizeof (AsmScn_t));
      66           2 :   if (newp == NULL)
      67             :     return NULL;
      68             : 
      69             :   /* Same assembler context than the original section.  */
      70           2 :   newp->ctx = runp->ctx;
      71             : 
      72             :   /* User provided the subsectio nID.  */
      73           2 :   newp->subsection_id = nr;
      74             : 
      75             :   /* Inherit the parent's type.  */
      76           2 :   newp->type = runp->type;
      77             : 
      78             :   /* Pointer to the zeroth subsection.  */
      79           2 :   newp->data.up = runp->subsection_id == 0 ? runp : runp->data.up;
      80             : 
      81             :   /* We start at offset zero.  */
      82           2 :   newp->offset = 0;
      83             :   /* And generic alignment.  */
      84           2 :   newp->max_align = 1;
      85             : 
      86             :   /* No output yet.  */
      87           2 :   newp->content = NULL;
      88             : 
      89             :   /* Inherit the fill pattern from the section this one is derived from.  */
      90           2 :   newp->pattern = asmscn->pattern;
      91             : 
      92             :   /* Enqueue at the right position in the list.  */
      93           2 :   newp->subnext = runp->subnext;
      94           2 :   runp->subnext = newp;
      95             : 
      96           2 :   return newp;
      97             : }