view trans.c @ 621:5196333b37a6

Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes.
author Michael Pavone <pavone@retrodev.com>
date Mon, 16 Jun 2014 19:13:28 -0700
parents 140af5509ce7
children 8e395210f50f
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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.
*/
#include "68kinst.h"
#include "m68k_to_x86.h"
#include "mem.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

m68k_context * sync_components(m68k_context * context, uint32_t address)
{
	if (context->current_cycle > 0x80000000) {
		context->current_cycle -= 0x80000000;
	}
	return context;
}

int main(int argc, char ** argv)
{
	long filesize;
	unsigned short *filebuf;
	char disbuf[1024];
	unsigned short * cur;
	x86_68k_options opts;
	m68k_context context;
	FILE * f = fopen(argv[1], "rb");
	fseek(f, 0, SEEK_END);
	filesize = ftell(f);
	fseek(f, 0, SEEK_SET);
	filebuf = malloc(filesize > 0x400000 ? filesize : 0x400000);
	fread(filebuf, 2, filesize/2, f);
	fclose(f);
	for(cur = filebuf; cur - filebuf < (filesize/2); ++cur)
	{
		*cur = (*cur >> 8) | (*cur << 8);
	}
	memmap_chunk memmap[2];
	memset(memmap, 0, sizeof(memmap_chunk)*2);
	memmap[0].end = 0x400000;
	memmap[0].mask = 0xFFFFFF;
	memmap[0].flags = MMAP_READ;
	memmap[0].buffer = filebuf;
	
	memmap[1].start = 0xE00000;
	memmap[1].end = 0x1000000;
	memmap[1].mask = 0xFFFF;
	memmap[1].flags = MMAP_READ | MMAP_WRITE | MMAP_CODE;
	memmap[1].buffer = malloc(64 * 1024);
	init_x86_68k_opts(&opts, memmap, 2);
	init_68k_context(&context, opts.native_code_map, &opts);
	context.mem_pointers[0] = memmap[0].buffer;
	context.mem_pointers[1] = memmap[1].buffer;
	context.target_cycle = context.sync_cycle = 0x80000000;
	uint32_t address;
	address = filebuf[2] << 16 | filebuf[3];
	translate_m68k_stream(address, &context);
	m68k_reset(&context);
	return 0;
}