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      1 /* Definitions for decoding the moxie opcode table.
      2    Copyright (C) 2009-2014 Free Software Foundation, Inc.
      3    Contributed by Anthony Green (green (at) moxielogic.com).
      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; either version 3 of the License, or
      8    (at your option) any later version.
      9 
     10    This program is distributed in the hope that it will be useful,
     11    but WITHOUT ANY WARRANTY; without even the implied warranty of
     12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13    GNU General Public License for more details.
     14 
     15    You should have received a copy of the GNU General Public License
     16    along with this program; if not, write to the Free Software
     17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
     18    02110-1301, USA.  */
     19 
     20 /* Form 1 instructions come in different flavors:
     21 
     22     Some have no arguments                          (MOXIE_F1_NARG)
     23     Some only use the A operand                     (MOXIE_F1_A)
     24     Some use A and B registers                      (MOXIE_F1_AB)
     25     Some use A and consume a 4 byte immediate value (MOXIE_F1_A4)
     26     Some use just a 4 byte immediate value          (MOXIE_F1_4)
     27     Some use just a 4 byte memory address           (MOXIE_F1_M)
     28     Some use B and an indirect A                    (MOXIE_F1_AiB)
     29     Some use A and an indirect B                    (MOXIE_F1_ABi)
     30     Some consume a 4 byte immediate value and use X (MOXIE_F1_4A)
     31     Some use B and an indirect A plus 4 bytes       (MOXIE_F1_AiB4)
     32     Some use A and an indirect B plus 4 bytes       (MOXIE_F1_ABi4)
     33 
     34   Form 2 instructions also come in different flavors:
     35 
     36     Some have no arguments                          (MOXIE_F2_NARG)
     37     Some use the A register and an 8-bit value      (MOXIE_F2_A8V)
     38 
     39   Form 3 instructions also come in different flavors:
     40 
     41     Some have no arguments                          (MOXIE_F3_NARG)
     42     Some have a 10-bit PC relative operand          (MOXIE_F3_PCREL).  */
     43 
     44 #define MOXIE_F1_NARG 0x100
     45 #define MOXIE_F1_A    0x101
     46 #define MOXIE_F1_AB   0x102
     47 /* #define MOXIE_F1_ABC  0x103 */
     48 #define MOXIE_F1_A4   0x104
     49 #define MOXIE_F1_4    0x105
     50 #define MOXIE_F1_AiB  0x106
     51 #define MOXIE_F1_ABi  0x107
     52 #define MOXIE_F1_4A   0x108
     53 #define MOXIE_F1_AiB4 0x109
     54 #define MOXIE_F1_ABi4 0x10a
     55 #define MOXIE_F1_M    0x10b
     56 
     57 #define MOXIE_F2_NARG 0x200
     58 #define MOXIE_F2_A8V  0x201
     59 
     60 #define MOXIE_F3_NARG  0x300
     61 #define MOXIE_F3_PCREL 0x301
     62 
     63 #define MOXIE_BAD     0x400
     64 
     65 typedef struct moxie_opc_info_t
     66 {
     67   short         opcode;
     68   unsigned      itype;
     69   const char *  name;
     70 } moxie_opc_info_t;
     71 
     72 extern const moxie_opc_info_t moxie_form1_opc_info[128];
     73 extern const moxie_opc_info_t moxie_form2_opc_info[4];
     74 extern const moxie_opc_info_t moxie_form3_opc_info[16];
     75