src/attribute-util.h

   1 // $Id$    --*- c -*--
   2
   3 // Copyright (C) 2007-2008 Daniel Hokka Zakrisson
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; version 2 of the License.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with this program; if not, write to the Free Software
  16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 #ifndef _ATTRIBUTE_UTIL_H
  19 #define _ATTRIBUTE_UTIL_H
  20
  21 static inline int
  22 ffsull(unsigned long long word)
  23 {
  24   int bit;
  25   for (bit = 0; bit < 64; bit++) {
  26     if (word & (1ULL << bit))
  27       break;
  28   }
  29   if (bit == 64)
  30     bit = 0;
  31   return bit;
  32 }
  33
  34 #define print_bitfield(fd, type, name, var)     \
  35   do {                                          \
  36   int first;                                    \
  37   WRITE_MSG(fd, name ":\n");                    \
  38   first = 1;                                    \
  39   while (1) {                                   \
  40     char const *i;                              \
  41     i = vc_lo ## type ## 2text(var);            \
  42     if (!i)                                     \
  43       break;                                    \
  44     if (!first)                                 \
  45       WRITE_MSG(fd, ",");                       \
  46     else                                        \
  47       first = 0;                                \
  48     WRITE_STR(fd, i);                           \
  49   }                                             \
  50   while (*(var)) {                              \
  51     int bit = ffsull(*(var));                   \
  52     if (!bit)                                   \
  53       break;                                    \
  54     if (!first)                                 \
  55       WRITE_MSG(fd, ",");                       \
  56     else                                        \
  57       first = 0;                                \
  58     WRITE_MSG(fd, "^");                         \
  59     WRITE_INT(fd, bit);                         \
  60     *(var) &= ~(1ULL << bit);                   \
  61   }                                             \
  62   WRITE_MSG(fd, "\n");                          \
  63   } while (0)
  64
  65 #endif