/**

 * $Id$

 *

 * Test cases for the SH4 => x86 translator core. Takes as

 * input a binary SH4 object (and VMA), generates the

 * corresponding x86 code, and outputs the disassembly.

 *

 * Copyright (c) 2005 Nathan Keynes.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <stdio.h>

#include <stdarg.h>

#include <getopt.h>

#include <sys/stat.h>

#include "x86dasm/x86dasm.h"

#include "sh4/sh4trans.h"

#include "sh4/sh4core.h"

#include "sh4/sh4mmio.h"

struct mmio_region mmio_region_MMU;

struct breakpoint_struct sh4_breakpoints[MAX_BREAKPOINTS];

int sh4_breakpoint_count = 0;

#define MAX_INS_SIZE 32

char *option_list = "s:o:d:h";

struct option longopts[1] = { { NULL, 0, 0, 0 } };

char *input_file = NULL;

char *diff_file = NULL;

char *output_file = NULL;

gboolean sh4_starting;

uint32_t start_addr = 0x8C010000;

uint32_t sh4_cpu_period = 5;

sh4ptr_t sh4_main_ram;

FILE *in;

char *inbuf;

struct x86_symbol local_symbols[] = {

    { "_sh4_read_byte", sh4_read_byte },

    { "_sh4_read_word", sh4_read_word },

    { "_sh4_read_long", sh4_read_long },

    { "_sh4_write_byte", sh4_write_byte },

    { "_sh4_write_word", sh4_write_word },

    { "_sh4_write_long", sh4_write_long }

};

int32_t sh4_read_byte( uint32_t addr ) 

{

    return *(uint8_t *)(inbuf+(addr-start_addr));

}

int32_t sh4_read_word( uint32_t addr ) 

{

    return *(uint16_t *)(inbuf+(addr-start_addr));

}

int32_t sh4_read_long( uint32_t addr ) 

{

    return *(uint32_t *)(inbuf+(addr-start_addr));

}

// Stubs

gboolean sh4_execute_instruction( ) { return TRUE; }

void sh4_accept_interrupt() {}

void sh4_set_breakpoint( uint32_t pc, breakpoint_type_t type ) { }

gboolean sh4_clear_breakpoint( uint32_t pc, breakpoint_type_t type ) { return TRUE; }

gboolean dreamcast_is_running() { return FALSE; }

int sh4_get_breakpoint( uint32_t pc ) { return 0; }

void sh4_core_exit( int exit_code ){}

void sh4_flush_icache(){}

void event_execute() {}

void TMU_run_slice( uint32_t nanos ) {}

void SCIF_run_slice( uint32_t nanos ) {}

void sh4_write_byte( uint32_t addr, uint32_t val ) {}

void sh4_write_word( uint32_t addr, uint32_t val ) {}

void sh4_write_long( uint32_t addr, uint32_t val ) {}

void sh4_write_fpscr( uint32_t val ) { }

void sh4_switch_fr_banks() { }

void mem_copy_to_sh4( sh4addr_t addr, sh4ptr_t src, size_t size ) { }

void sh4_write_sr( uint32_t val ) { }

gboolean sh4_has_page( sh4vma_t vma ) { return TRUE; }

void syscall_invoke( uint32_t val ) { }

void dreamcast_stop() {} 

void dreamcast_reset() {}

uint32_t sh4_read_sr( void ) { return 0; }

gboolean sh4_raise_reset( int exc ) { return TRUE; }

gboolean sh4_raise_exception( int exc ) { return TRUE; }

gboolean sh4_raise_tlb_exception( int exc ) { return TRUE; }

gboolean sh4_raise_trap( int exc ) { return TRUE; }

void sh4_sleep() { }

uint32_t sh4_sleep_run_slice(uint32_t nanosecs) { return nanosecs; }

void sh4_fsca( uint32_t angle, float *fr ) { }

void sh4_ftrv( float *fv ) { }

void signsat48(void) { }

gboolean gui_error_dialog( const char *fmt, ... ) { return TRUE; }

struct sh4_icache_struct sh4_icache;

void usage()

{

    fprintf( stderr, "Usage: testsh4x86 [options] <input bin file>\n");

    fprintf( stderr, "Options:\n");

    fprintf( stderr, "  -d <filename>  Diff results against contents of file\n" );

    fprintf( stderr, "  -h             Display this help message\n" );

    fprintf( stderr, "  -o <filename>  Output disassembly to file [stdout]\n" );

    fprintf( stderr, "  -s <addr>      Specify start address of binary [8C010000]\n" );

}

void emit( void *ptr, int level, const gchar *source, const char *msg, ... )

{

    va_list ap;

    va_start( ap, msg );

    vfprintf( stderr, msg, ap );

    fprintf( stderr, "\n" );

    va_end(ap);

}

struct sh4_registers sh4r;

int main( int argc, char *argv[] )

{

    struct stat st;

    int opt;

    while( (opt = getopt_long( argc, argv, option_list, longopts, NULL )) != -1 ) {

	switch( opt ) {

	case 'd':

	    diff_file = optarg;

	    break;

	case 'o':

	    output_file = optarg;

	    break;

	case 's':

	    start_addr = strtoul(optarg, NULL, 0);

	    break;

	case 'h':

	    usage();

	    exit(0);

	}

    }

    if( optind < argc ) {

	input_file = argv[optind++];

    } else {

	usage();

	exit(1);

    }

    in = fopen( input_file, "ro" );

    if( in == NULL ) {

	perror( "Unable to open input file" );

	exit(2);

    }

    fstat( fileno(in), &st );

    inbuf = malloc( st.st_size );

    fread( inbuf, st.st_size, 1, in );

    xlat_cache_init();

    uint32_t pc;

    uint8_t *buf = sh4_translate_basic_block( start_addr );

    uint32_t buflen = xlat_get_block_size(buf);

    x86_disasm_init( buf, 0x8c010000, buflen );

    x86_set_symtab( local_symbols, 6 );

    for( pc = 0x8c010000; pc < 0x8c010000 + buflen;  ) {

	char buf[256];

	char op[256];

	uint32_t pc2 = x86_disasm_instruction( pc, buf, sizeof(buf), op );

	fprintf( stdout, "%08X: %-20s %s\n", pc, op, buf );

	pc = pc2;

    }

    return 0;

}