Mercurial > repos > blastem
view 68kinst.h @ 478:2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 17 Sep 2013 00:11:45 -0700 |
parents | 140af5509ce7 |
children | 775802dab98f |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #ifndef M68KINST_H_ #define M68KINST_H_ #include <stdint.h> typedef enum { BIT_MOVEP_IMMED = 0, MOVE_BYTE, MOVE_LONG, MOVE_WORD, MISC, QUICK_ARITH_LOOP, BRANCH, MOVEQ, OR_DIV_SBCD, SUB_SUBX, RESERVED, CMP_XOR, AND_MUL_ABCD_EXG, ADD_ADDX, SHIFT_ROTATE, COPROC } m68k_optypes; typedef enum { M68K_ABCD, M68K_ADD, M68K_ADDX, M68K_AND, M68K_ANDI_CCR, M68K_ANDI_SR, M68K_ASL, M68K_ASR, M68K_BCC, M68K_BCHG, M68K_BCLR, M68K_BSET, M68K_BSR, M68K_BTST, M68K_CHK, M68K_CLR, M68K_CMP, M68K_DBCC, M68K_DIVS, M68K_DIVU, M68K_EOR, M68K_EORI_CCR, M68K_EORI_SR, M68K_EXG, M68K_EXT, M68K_ILLEGAL, M68K_JMP, M68K_JSR, M68K_LEA, M68K_LINK, M68K_LSL, M68K_LSR, M68K_MOVE, M68K_MOVE_CCR, M68K_MOVE_FROM_SR, M68K_MOVE_SR, M68K_MOVE_USP, M68K_MOVEM, M68K_MOVEP, M68K_MULS, M68K_MULU, M68K_NBCD, M68K_NEG, M68K_NEGX, M68K_NOP, M68K_NOT, M68K_OR, M68K_ORI_CCR, M68K_ORI_SR, M68K_PEA, M68K_RESET, M68K_ROL, M68K_ROR, M68K_ROXL, M68K_ROXR, M68K_RTE, M68K_RTR, M68K_RTS, M68K_SBCD, M68K_SCC, M68K_STOP, M68K_SUB, M68K_SUBX, M68K_SWAP, M68K_TAS, M68K_TRAP, M68K_TRAPV, M68K_TST, M68K_UNLK, M68K_INVALID } m68K_op; typedef enum { VAR_NORMAL, VAR_QUICK, VAR_IMMEDIATE, VAR_BYTE, VAR_WORD, VAR_LONG } m68K_variant; typedef enum { OPSIZE_BYTE=0, OPSIZE_WORD, OPSIZE_LONG, OPSIZE_INVALID, OPSIZE_UNSIZED } m68K_opsizes; typedef enum { //actual addressing mode field values MODE_REG = 0, MODE_AREG, MODE_AREG_INDIRECT, MODE_AREG_POSTINC, MODE_AREG_PREDEC, MODE_AREG_DISPLACE, MODE_AREG_INDEX_MEM, //bunch of relatively complicated modes MODE_PC_INDIRECT_ABS_IMMED, //Modes that use the program counter, an absolute address or immediate value //expanded values MODE_AREG_INDEX_DISP8, #ifdef M68020 MODE_AREG_INDEX_DISP32, #endif MODE_ABSOLUTE_SHORT, MODE_ABSOLUTE, MODE_PC_DISPLACE, MODE_PC_INDEX_DISP8, #ifdef M68020 MODE_PC_INDEX_DISP32, #endif MODE_IMMEDIATE, MODE_IMMEDIATE_WORD,//used to indicate an immediate operand that only uses a single extension word even for a long operation MODE_UNUSED } m68k_addr_modes; typedef enum { COND_TRUE, COND_FALSE, COND_HIGH, COND_LOW_SAME, COND_CARRY_CLR, COND_CARRY_SET, COND_NOT_EQ, COND_EQ, COND_OVERF_CLR, COND_OVERF_SET, COND_PLUS, COND_MINUS, COND_GREATER_EQ, COND_LESS, COND_GREATER, COND_LESS_EQ } m68K_condition; typedef struct { uint8_t addr_mode; union { struct { uint8_t pri; uint8_t sec; int32_t displacement; } regs; uint32_t immed; } params; } m68k_op_info; typedef struct m68kinst { uint8_t op; uint8_t variant; union { uint8_t size; uint8_t cond; } extra; uint32_t address; m68k_op_info src; m68k_op_info dst; } m68kinst; typedef enum { VECTOR_RESET_STACK, VECTOR_RESET_PC, VECTOR_ACCESS_FAULT, VECTOR_ADDRESS_ERROR, VECTOR_ILLEGAL_INST, VECTOR_INT_DIV_ZERO, VECTOR_CHK, VECTOR_TRAPV, VECTOR_PRIV_VIOLATION, VECTOR_TRACE, VECTOR_LINE_1010, VECTOR_LINE_1111, VECTOR_COPROC_VIOLATION=13, VECTOR_FORMAT_ERROR, VECTOR_UNINIT_INTERRUPT, VECTOR_SPURIOUS_INTERRUPT=24, VECTOR_INT_1, VECTOR_INT_2, VECTOR_INT_3, VECTOR_INT_4, VECTOR_INT_5, VECTOR_INT_6, VECTOR_INT_7, VECTOR_TRAP_0, VECTOR_TRAP_1, VECTOR_TRAP_2, VECTOR_TRAP_3, VECTOR_TRAP_4, VECTOR_TRAP_5, VECTOR_TRAP_6, VECTOR_TRAP_7, VECTOR_TRAP_8, VECTOR_TRAP_9, VECTOR_TRAP_10, VECTOR_TRAP_11, VECTOR_TRAP_12, VECTOR_TRAP_13, VECTOR_TRAP_14, VECTOR_TRAP_15 } m68k_vector; uint16_t * m68k_decode(uint16_t * istream, m68kinst * dst, uint32_t address); uint32_t m68k_cycles(m68kinst * inst); int m68k_disasm(m68kinst * decoded, char * dst); int m68k_disasm_labels(m68kinst * decoded, char * dst); #endif