sdcc/support/sdbinutils/include/opcode/moxie.h

   1 /* Definitions for decoding the moxie opcode table.
   2    Copyright (C) 2009-2022 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 2 byte offset (MOXIE_F1_AiB2)
  32     Some use A and an indirect B plus 2 byte offset (MOXIE_F1_ABi2)
  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_AiB2 0x109
  54 #define MOXIE_F1_ABi2 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];