1 /* Definitions for decoding the moxie opcode table. 2 Copyright (C) 2009-2015 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]; 75