mirror of
https://github.com/Museum-of-Art-and-Digital-Entertainment/macross.git
synced 2024-12-27 14:29:23 +00:00
102 lines
4.3 KiB
C
102 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 1987 Fujitsu
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
/*
|
|
operandDefs_6502.h -- Define operand types and flag bits for 6502.
|
|
|
|
Chip Morningstar -- Lucasfilm Ltd.
|
|
|
|
18-April-1985
|
|
*/
|
|
|
|
typedef enum {
|
|
EXPRESSION_OPND, IMMEDIATE_OPND, INDIRECT_OPND,
|
|
A_REGISTER_OPND, X_REGISTER_OPND, Y_REGISTER_OPND,
|
|
POST_INDEXED_Y_OPND, PRE_INDEXED_X_OPND, X_INDEXED_OPND,
|
|
Y_INDEXED_OPND, X_SELECTED_OPND, Y_SELECTED_OPND,
|
|
PRE_SELECTED_X_OPND, STRING_OPND, BLOCK_OPND
|
|
} operandKindType;
|
|
|
|
#define operandKindField(op) op
|
|
|
|
/* Opcodes: */
|
|
/* In the opcode table we want to have information that tells which possible
|
|
address modes the corresponding instruction can utilize. The
|
|
instruction set of the 6502 breaks up into classes of instructions, such
|
|
that all of the instructions in a class accept the same address modes.
|
|
We encode the instructions by class and the classes by permissible address
|
|
modes. This helps us reduce errors in construction of the opcode table,
|
|
since getting one instruction of a given class right means getting all the
|
|
others right too. */
|
|
typedef enum {
|
|
RELATIVE, DIR_1, DIR_2, DIR_INDIR, DIR_X_1, DIR_X_2, DIR_X_3,
|
|
DIR_Y, IMM_DIR, IMM_DIR_X, IMM_DIR_Y, NONE, INDEX, IMM_INDEX
|
|
} addressClassType;
|
|
|
|
#define NO_OPND_BIT 0x0000
|
|
#define EXPRESSION_OPND_BIT 0x0001
|
|
#define IMMEDIATE_OPND_BIT 0x0002
|
|
#define INDIRECT_OPND_BIT 0x0004
|
|
#define A_REGISTER_OPND_BIT 0x0008
|
|
#define X_REGISTER_OPND_BIT 0x0010
|
|
#define Y_REGISTER_OPND_BIT 0x0020
|
|
#define POST_INDEXED_Y_OPND_BIT 0x0040
|
|
#define PRE_INDEXED_X_OPND_BIT 0x0080
|
|
#define X_INDEXED_OPND_BIT 0x0100
|
|
#define Y_INDEXED_OPND_BIT 0x0200
|
|
#define X_SELECTED_OPND_BIT 0x0400
|
|
#define Y_SELECTED_OPND_BIT 0x0800
|
|
#define PRE_SELECTED_X_OPND_BIT 0x1000
|
|
#define STRING_OPND_BIT 0x2000
|
|
#define BLOCK_OPND_BIT 0x4000
|
|
#define ANY_OPND_BITS 0xFFFF
|
|
|
|
#define REL_CLASS_BITS EXPRESSION_OPND_BIT
|
|
#define DIR_1_CLASS_BITS EXPRESSION_OPND_BIT
|
|
#define DIR_2_CLASS_BITS EXPRESSION_OPND_BIT
|
|
#define DIR_INDIR_CLASS_BITS EXPRESSION_OPND_BIT | INDIRECT_OPND_BIT
|
|
#define DIR_X_1_CLASS_BITS EXPRESSION_OPND_BIT | X_INDEXED_OPND_BIT | \
|
|
X_SELECTED_OPND_BIT | A_REGISTER_OPND_BIT
|
|
#define DIR_X_2_CLASS_BITS EXPRESSION_OPND_BIT | X_INDEXED_OPND_BIT | \
|
|
X_SELECTED_OPND_BIT
|
|
#define DIR_X_3_CLASS_BITS EXPRESSION_OPND_BIT | X_INDEXED_OPND_BIT | \
|
|
X_SELECTED_OPND_BIT
|
|
#define DIR_Y_CLASS_BITS EXPRESSION_OPND_BIT | Y_INDEXED_OPND_BIT | \
|
|
Y_SELECTED_OPND_BIT
|
|
#define IMM_DIR_CLASS_BITS EXPRESSION_OPND_BIT | IMMEDIATE_OPND_BIT
|
|
#define IMM_DIR_X_CLASS_BITS EXPRESSION_OPND_BIT | IMMEDIATE_OPND_BIT | \
|
|
X_INDEXED_OPND_BIT | X_SELECTED_OPND_BIT
|
|
#define IMM_DIR_Y_CLASS_BITS EXPRESSION_OPND_BIT | IMMEDIATE_OPND_BIT | \
|
|
Y_INDEXED_OPND_BIT | Y_SELECTED_OPND_BIT
|
|
#define NONE_CLASS_BITS NO_OPND_BIT
|
|
#define IMM_INDEX_CLASS_BITS X_INDEXED_OPND_BIT | Y_INDEXED_OPND_BIT | \
|
|
X_SELECTED_OPND_BIT | Y_SELECTED_OPND_BIT | \
|
|
IMMEDIATE_OPND_BIT | PRE_INDEXED_X_OPND_BIT |\
|
|
POST_INDEXED_Y_OPND_BIT | \
|
|
EXPRESSION_OPND_BIT | PRE_SELECTED_X_OPND_BIT
|
|
#define INDEX_CLASS_BITS X_INDEXED_OPND_BIT | Y_INDEXED_OPND_BIT | \
|
|
X_SELECTED_OPND_BIT | Y_SELECTED_OPND_BIT | \
|
|
PRE_INDEXED_X_OPND_BIT | \
|
|
POST_INDEXED_Y_OPND_BIT | \
|
|
EXPRESSION_OPND_BIT | PRE_SELECTED_X_OPND_BIT
|
|
|
|
#define MAX_NUMBER_OF_OPERANDS 1
|