opcodes/arc-ext.h

   1 /* ARC target-dependent stuff.  Extension data structures.
   2    Copyright (C) 1995-2015 Free Software Foundation, Inc.
   3
   4    This file is part of libopcodes.
   5
   6    This library 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 3, or (at your option)
   9    any later version.
  10
  11    It is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 /*This header file defines a table of extensions to the ARC processor
  22   architecture.  These extensions are read from the '.arcextmap' or
  23   '.gnu.linkonce.arcextmap.<type>.<N>' sections in the ELF file which
  24   is identified by the bfd parameter to the build_ARC_extmap function.
  25
  26   These extensions may include:
  27          core registers
  28          auxiliary registers
  29          instructions
  30          condition codes
  31
  32   Once the table has been constructed, accessor functions may be used
  33   to retrieve information from it.
  34
  35   The build_ARC_extmap constructor function build_ARC_extmap may be
  36   called as many times as required; it will re-initialize the table
  37   each time.  */
  38
  39 #ifndef ARC_EXTENSIONS_H
  40 #define ARC_EXTENSIONS_H
  41
  42 #define IGNORE_FIRST_OPD 1
  43
  44 /* Define this if we do not want to encode instructions based on the
  45    ARCompact Programmer's Reference.  */
  46 #define UNMANGLED
  47
  48
  49 /* This defines the kinds of extensions which may be read from the
  50    ections in the executable files.  */
  51 enum ExtOperType
  52 {
  53   EXT_INSTRUCTION            = 0,
  54   EXT_CORE_REGISTER          = 1,
  55   EXT_AUX_REGISTER           = 2,
  56   EXT_COND_CODE              = 3,
  57   EXT_INSTRUCTION32          = 4,
  58   EXT_AC_INSTRUCTION         = 4,
  59   EXT_REMOVE_CORE_REG        = 5,
  60   EXT_LONG_CORE_REGISTER     = 6,
  61   EXT_AUX_REGISTER_EXTENDED  = 7,
  62   EXT_INSTRUCTION32_EXTENDED = 8,
  63   EXT_CORE_REGISTER_CLASS    = 9
  64 };
  65
  66
  67 enum ExtReadWrite
  68 {
  69   REG_INVALID,
  70   REG_READ,
  71   REG_WRITE,
  72   REG_READWRITE
  73 };
  74
  75
  76 /* Constructor function.  */
  77 extern void build_ARC_extmap (bfd *);
  78
  79 /* Accessor functions.  */
  80 extern enum ExtReadWrite arcExtMap_coreReadWrite (int);
  81 extern const char * arcExtMap_coreRegName (int);
  82 extern const char * arcExtMap_auxRegName (long);
  83 extern const char * arcExtMap_condCodeName (int);
  84 extern const char * arcExtMap_instName (int, int, int *);
  85
  86 /* Dump function (for debugging).  */
  87 extern void dump_ARC_extmap (void);
  88
  89 #endif /* ARC_EXTENSIONS_H */