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  1. /* Definitions for decoding the moxie opcode table.
  2.    Copyright 2009 Free Software Foundation, Inc.
  3.    Contributed by Anthony Green (green@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.