1/*
  2 Copyright 2014 Michael Pavone
  3 This file is part of BlastEm.
  4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
  5*/
  6#ifndef M68K_INTERNAL_H_
  7#define M68K_INTERNAL_H_
  8
  9#include "68kinst.h"
 10
 11//functions implemented in host CPU specfic file
 12void translate_out_of_bounds(m68k_options *opts, uint32_t address);
 13void areg_to_native(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 14void dreg_to_native(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 15void areg_to_native_sx(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 16void dreg_to_native_sx(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 17void native_to_areg(m68k_options *opts, uint8_t native_reg, uint8_t reg);
 18void native_to_dreg(m68k_options *opts, uint8_t native_reg, uint8_t reg);
 19void ldi_areg(m68k_options *opts, int32_t value, uint8_t reg);
 20void ldi_native(m68k_options *opts, int32_t value, uint8_t reg);
 21void addi_native(m68k_options *opts, int32_t value, uint8_t reg);
 22void subi_native(m68k_options *opts, int32_t value, uint8_t reg);
 23void push_native(m68k_options *opts, uint8_t reg);
 24void pop_native(m68k_options *opts, uint8_t reg);
 25void sign_extend16_native(m68k_options *opts, uint8_t reg);
 26void addi_areg(m68k_options *opts, int32_t val, uint8_t reg);
 27void subi_areg(m68k_options *opts, int32_t val, uint8_t reg);
 28void add_areg_native(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 29void add_dreg_native(m68k_options *opts, uint8_t reg, uint8_t native_reg);
 30void calc_areg_displace(m68k_options *opts, m68k_op_info *op, uint8_t native_reg);
 31void calc_index_disp8(m68k_options *opts, m68k_op_info *op, uint8_t native_reg);
 32void calc_areg_index_disp8(m68k_options *opts, m68k_op_info *op, uint8_t native_reg);
 33void nop_fill_or_jmp_next(code_info *code, code_ptr old_end, code_ptr next_inst);
 34void check_user_mode_swap_ssp_usp(m68k_options *opts);
 35void m68k_set_last_prefetch(m68k_options *opts, uint32_t address);
 36void translate_m68k_odd(m68k_options *opts, m68kinst *inst);
 37void m68k_trap_if_not_supervisor(m68k_options *opts, m68kinst *inst);
 38void m68k_breakpoint_patch(m68k_context *context, uint32_t address, m68k_debug_handler bp_handler, code_ptr native_addr);
 39void m68k_check_cycles_int_latch(m68k_options *opts);
 40uint8_t translate_m68k_op(m68kinst * inst, host_ea * ea, m68k_options * opts, uint8_t dst);
 41
 42//functions implemented in m68k_core.c
 43int8_t native_reg(m68k_op_info * op, m68k_options * opts);
 44size_t dreg_offset(uint8_t reg);
 45size_t areg_offset(uint8_t reg);
 46size_t reg_offset(m68k_op_info *op);
 47void m68k_read_size(m68k_options *opts, uint8_t size);
 48void m68k_write_size(m68k_options *opts, uint8_t size, uint8_t lowfirst);
 49void m68k_save_result(m68kinst * inst, m68k_options * opts);
 50void jump_m68k_abs(m68k_options * opts, uint32_t address);
 51void swap_ssp_usp(m68k_options * opts);
 52code_ptr get_native_address(m68k_options *opts, uint32_t address);
 53uint8_t m68k_is_terminal(m68kinst * inst);
 54code_ptr get_native_address_trans(m68k_context * context, uint32_t address);
 55void * m68k_retranslate_inst(uint32_t address, m68k_context * context);
 56m68k_context *m68k_bp_dispatcher(m68k_context *context, uint32_t address);
 57
 58//individual instructions
 59void translate_m68k_bcc(m68k_options * opts, m68kinst * inst);
 60void translate_m68k_scc(m68k_options * opts, m68kinst * inst);
 61void translate_m68k_dbcc(m68k_options * opts, m68kinst * inst);
 62void translate_m68k_trapv(m68k_options *opts, m68kinst *inst);
 63void translate_m68k_move(m68k_options * opts, m68kinst * inst);
 64void translate_m68k_movep(m68k_options * opts, m68kinst * inst);
 65void translate_m68k_arith(m68k_options *opts, m68kinst * inst, uint32_t flag_mask, host_ea *src_op, host_ea *dst_op);
 66void translate_m68k_unary(m68k_options *opts, m68kinst *inst, uint32_t flag_mask, host_ea *dst_op);
 67void translate_m68k_cmp(m68k_options * opts, m68kinst * inst);
 68void translate_m68k_tas(m68k_options * opts, m68kinst * inst);
 69void translate_m68k_ext(m68k_options * opts, m68kinst * inst);
 70void translate_m68k_abcd_sbcd(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 71void translate_m68k_sl(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 72void translate_m68k_asr(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 73void translate_m68k_lsr(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 74void translate_m68k_bit(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 75void translate_m68k_chk(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 76void translate_m68k_div(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 77void translate_m68k_exg(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 78void translate_m68k_mul(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 79void translate_m68k_negx(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 80void translate_m68k_rot(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 81void translate_m68k_andi_ori_ccr_sr(m68k_options *opts, m68kinst *inst);
 82void translate_m68k_eori_ccr_sr(m68k_options *opts, m68kinst *inst);
 83void translate_m68k_move_ccr_sr(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 84void translate_m68k_stop(m68k_options *opts, m68kinst *inst);
 85void translate_m68k_move_from_sr(m68k_options *opts, m68kinst *inst, host_ea *src_op, host_ea *dst_op);
 86void translate_m68k_reset(m68k_options *opts, m68kinst *inst);
 87
 88//flag update bits
 89#define X0  0x0001
 90#define X1  0x0002
 91#define X   0x0004
 92#define N0  0x0008
 93#define N1  0x0010
 94#define N   0x0020
 95#define Z0  0x0040
 96#define Z1  0x0080
 97#define Z   0x0100
 98#define V0  0x0200
 99#define V1  0x0400
100#define V   0x0800
101#define C0  0x1000
102#define C1  0x2000
103#define C   0x4000
104
105#define BUS 4
106#define PREDEC_PENALTY 2
107extern char disasm_buf[1024];
108
109m68k_context * sync_components(m68k_context * context, uint32_t address);
110
111void m68k_invalid();
112void bcd_add();
113void bcd_sub();
114
115#endif //M68K_INTERNAL_H_