Mercurial > repos > blastem
view m68k_to_x86.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 | c2716b502a81 |
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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 M68K_TO_X86_H_ #define M68K_TO_X86_H_ #include <stdint.h> #include <stdio.h> #include "x86_backend.h" //#include "68kinst.h" struct m68kinst; #define NUM_MEM_AREAS 4 #define NATIVE_MAP_CHUNKS (64*1024) #define NATIVE_CHUNK_SIZE ((16 * 1024 * 1024 / NATIVE_MAP_CHUNKS)/2) #define MAX_NATIVE_SIZE 255 #define OPT_NATIVE_CALL_STACK 0x1 typedef struct { uint32_t flags; int8_t dregs[8]; int8_t aregs[8]; native_map_slot *native_code_map; deferred_addr *deferred; uint8_t *cur_code; uint8_t *code_end; uint8_t **ram_inst_sizes; FILE *address_log; uint8_t *read_16; uint8_t *write_16; uint8_t *read_8; uint8_t *write_8; uint8_t *read_32; uint8_t *write_32_lowfirst; uint8_t *write_32_highfirst; uint8_t *handle_cycle_limit_int; uint8_t *trap; } x86_68k_options; typedef struct { uint8_t flags[5]; uint8_t status; uint16_t int_ack; uint32_t dregs[8]; uint32_t aregs[9]; uint32_t target_cycle; //cycle at which the next synchronization or interrupt occurs uint32_t current_cycle; uint32_t sync_cycle; uint32_t int_cycle; uint32_t int_num; uint16_t *mem_pointers[NUM_MEM_AREAS]; void *video_context; uint16_t reserved; native_map_slot *native_code_map; void *options; uint8_t ram_code_flags[32/8]; void *system; } m68k_context; uint8_t * translate_m68k(uint8_t * dst, struct m68kinst * inst, x86_68k_options * opts); uint8_t * translate_m68k_stream(uint32_t address, m68k_context * context); void start_68k_context(m68k_context * context, uint32_t address); void init_x86_68k_opts(x86_68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks); void init_68k_context(m68k_context * context, native_map_slot * native_code_map, void * opts); void m68k_reset(m68k_context * context); void insert_breakpoint(m68k_context * context, uint32_t address, uint8_t * bp_handler); void remove_breakpoint(m68k_context * context, uint32_t address); m68k_context * m68k_handle_code_write(uint32_t address, m68k_context * context); #endif //M68K_TO_X86_H_