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75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/* Definitions for decoding the moxie opcode table.
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Copyright (C) 2009-2021 Free Software Foundation, Inc.
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Contributed by Anthony Green (green@moxielogic.com).
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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/* Form 1 instructions come in different flavors:
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Some have no arguments (MOXIE_F1_NARG)
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Some only use the A operand (MOXIE_F1_A)
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Some use A and B registers (MOXIE_F1_AB)
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Some use A and consume a 4 byte immediate value (MOXIE_F1_A4)
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Some use just a 4 byte immediate value (MOXIE_F1_4)
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Some use just a 4 byte memory address (MOXIE_F1_M)
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Some use B and an indirect A (MOXIE_F1_AiB)
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Some use A and an indirect B (MOXIE_F1_ABi)
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Some consume a 4 byte immediate value and use X (MOXIE_F1_4A)
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Some use B and an indirect A plus 2 byte offset (MOXIE_F1_AiB2)
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Some use A and an indirect B plus 2 byte offset (MOXIE_F1_ABi2)
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Form 2 instructions also come in different flavors:
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Some have no arguments (MOXIE_F2_NARG)
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Some use the A register and an 8-bit value (MOXIE_F2_A8V)
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Form 3 instructions also come in different flavors:
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Some have no arguments (MOXIE_F3_NARG)
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Some have a 10-bit PC relative operand (MOXIE_F3_PCREL). */
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#define MOXIE_F1_NARG 0x100
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#define MOXIE_F1_A 0x101
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#define MOXIE_F1_AB 0x102
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/* #define MOXIE_F1_ABC 0x103 */
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#define MOXIE_F1_A4 0x104
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#define MOXIE_F1_4 0x105
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#define MOXIE_F1_AiB 0x106
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#define MOXIE_F1_ABi 0x107
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#define MOXIE_F1_4A 0x108
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#define MOXIE_F1_AiB2 0x109
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#define MOXIE_F1_ABi2 0x10a
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#define MOXIE_F1_M 0x10b
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#define MOXIE_F2_NARG 0x200
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#define MOXIE_F2_A8V 0x201
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#define MOXIE_F3_NARG 0x300
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#define MOXIE_F3_PCREL 0x301
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#define MOXIE_BAD 0x400
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typedef struct moxie_opc_info_t
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{
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short opcode;
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unsigned itype;
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const char * name;
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} moxie_opc_info_t;
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extern const moxie_opc_info_t moxie_form1_opc_info[128];
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extern const moxie_opc_info_t moxie_form2_opc_info[4];
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extern const moxie_opc_info_t moxie_form3_opc_info[16];
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