gcc/bi-reverse.c

   1 /* Reverse order of definitions obtained from bytecode definition file.
   2    Copyright (C) 1993 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include "hconfig.h"
  23 #include "bi-defs.h"
  24
  25 void
  26 reverse()
  27 {
  28   struct def *dp, *d, *dn;
  29   struct variation *vp, *v, *vn;
  30
  31   dp = defs;
  32   if (dp)
  33     {
  34       vp = dp->variations;
  35       if (vp)
  36         {
  37           for (v = vp->next, vp->next = 0; v; vp = v, v = vn)
  38             {
  39               vn = v->next;
  40               v->next = vp;
  41             }
  42           dp->variations = vp;
  43         }
  44       for (d = dp->next, dp->next = 0; d; dp = d, d = dn)
  45         {
  46           vp = d->variations;
  47           if (vp)
  48             {
  49               for (v = vp->next, vp->next = 0; v; vp = v, v = vn)
  50                 {
  51                   vn = v->next;
  52                   v->next = vp;
  53                 }
  54               d->variations = vp;
  55             }
  56           dn = d->next;
  57           d->next = dp;
  58         }
  59       defs = dp;
  60     }
  61 }