gas/itbl-ops.h

   1 /* itbl-ops.h
   2    Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS 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    GAS 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 GAS; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, USA.  */
  20
  21 /* External functions, constants and defines for itbl support */
  22
  23 #include "ansidecl.h"
  24
  25 /* Include file notes: "expr.h" needed before targ-*.h,
  26  * "targ-env.h" includes the chain of target dependant headers,
  27  * "targ-cpu.h" has the HAVE_ITBL_CPU define, and
  28  * as.h includes them all */
  29 #include "as.h"
  30
  31 #ifdef HAVE_ITBL_CPU
  32 #include "itbl-cpu.h"
  33 #endif
  34
  35 /* Defaults for definitions required by generic code */
  36 #ifndef ITBL_NUMBER_OF_PROCESSORS
  37 #define ITBL_NUMBER_OF_PROCESSORS 1
  38 #endif
  39
  40 #ifndef ITBL_MAX_BITPOS
  41 #define ITBL_MAX_BITPOS 31
  42 #endif
  43
  44 #ifndef ITBL_TYPE
  45 #define ITBL_TYPE unsigned long
  46 #endif
  47
  48 #ifndef ITBL_IS_INSN
  49 #define ITBL_IS_INSN(insn) 1
  50 #endif
  51
  52 #ifndef ITBL_DECODE_PNUM
  53 #define ITBL_DECODE_PNUM(insn) 0
  54 #endif
  55
  56 #ifndef ITBL_ENCODE_PNUM
  57 #define ITBL_ENCODE_PNUM(pnum) 0
  58 #endif
  59
  60 typedef ITBL_TYPE t_insn;
  61
  62 /* types of entries */
  63 typedef enum
  64   {
  65     e_insn,
  66     e_dreg,
  67     e_regtype0 = e_dreg,
  68     e_creg,
  69     e_greg,
  70     e_addr,
  71     e_nregtypes = e_greg + 1,
  72     e_immed,
  73     e_ntypes,
  74     e_invtype                   /* invalid type */
  75   } e_type;
  76
  77 typedef enum
  78   {
  79     e_p0,
  80     e_nprocs = NUMBER_OF_PROCESSORS,
  81     e_invproc                   /* invalid processor */
  82   } e_processor;
  83
  84 /* 0 means an instruction table was not specified.  */
  85 extern int itbl_have_entries;
  86
  87 /* These routines are visible to the main part of the assembler */
  88
  89 int itbl_parse PARAMS ((char *insntbl));
  90 void itbl_init PARAMS ((void));
  91 char *itbl_get_field PARAMS ((char **s));
  92 unsigned long itbl_assemble PARAMS ((char *name, char *operands));
  93 int itbl_disassemble PARAMS ((char *str, unsigned long insn));
  94 int itbl_parse PARAMS ((char *tbl));    /* parses insn tbl */
  95 int itbl_get_reg_val PARAMS ((char *name, unsigned long *pval));
  96 int itbl_get_val PARAMS ((e_processor processor, e_type type, char *name,
  97                           unsigned long *pval));
  98 char *itbl_get_name PARAMS ((e_processor processor, e_type type,
  99                              unsigned long val));
 100
 101 /* These routines are called by the table parser used to build the
 102    dynamic list of new processor instructions and registers.  */
 103
 104 struct itbl_entry *itbl_add_reg PARAMS ((int yyproc, int yytype,
 105                                          char *regname, int regnum));
 106 struct itbl_entry *itbl_add_insn PARAMS ((int yyproc, char *name,
 107              unsigned long value, int sbit, int ebit, unsigned long flags));
 108 struct itbl_field *itbl_add_operand PARAMS ((struct itbl_entry * e, int yytype,
 109                                   int sbit, int ebit, unsigned long flags));