gas/frags.h

   1 /* frags.h - Header file for the frag concept.
   2
   3    Copyright (C) 1987, 1992 Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    GAS is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GAS; see the file COPYING.  If not, write to
  19    the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 extern struct obstack frags;
  22 /* Frags ONLY live in this obstack. */
  23 /* We use obstack_next_free() macro */
  24 /* so please don't put any other objects */
  25 /* on this stack! */
  26
  27 /*
  28  * A macro to speed up appending exactly 1 char
  29  * to current frag.
  30  */
  31 /* JF changed < 1 to <= 1 to avoid a race conditon */
  32 #define FRAG_APPEND_1_CHAR(datum)       \
  33 {                                       \
  34   if (obstack_room( &frags ) <= 1) {\
  35     frag_wane (frag_now);       \
  36     frag_new (0);               \
  37   }                             \
  38   obstack_1grow( &frags, datum );       \
  39 }
  40
  41
  42 void frag_init PARAMS ((void));
  43 void frag_grow PARAMS ((unsigned int nchars));
  44 char *frag_more PARAMS ((int nchars));
  45 void frag_align PARAMS ((int alignment, int fill_character));
  46 void frag_align_pattern PARAMS ((int alignment,
  47                                  const char *fill_pattern,
  48                                  int n_fill));
  49 void frag_new PARAMS ((int old_frags_var_max_size));
  50 void frag_wane PARAMS ((fragS * fragP));
  51
  52 char *frag_variant PARAMS ((relax_stateT type,
  53                             int max_chars,
  54                             int var,
  55                             relax_substateT subtype,
  56                             symbolS * symbol,
  57                             long offset,
  58                             char *opcode,
  59                             int pcrel_adjust,
  60                             int bsr));
  61
  62 char *frag_var PARAMS ((relax_stateT type,
  63                         int max_chars,
  64                         int var,
  65                         relax_substateT subtype,
  66                         symbolS * symbol,
  67                         long offset,
  68                         char *opcode));
  69
  70 /* end of frags.h */