Subversion Repositories zipcpu

////////////////////////////////////////////////////////////////////////////////

//

// Filename:    zdump.cpp

//

// Project:     Zip CPU -- a small, lightweight, RISC CPU core

//

// Purpose:     Disassemble machine code files onto the stdout file.

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2015, Gisselquist Technology, LLC

//

// This program is free software (firmware): 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 3 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 MERCHANTIBILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with this program.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

#include <stdio.h>

#include <unistd.h>

#include <ctype.h>

#include "zopcodes.h"

void    dump_file(const bool bigend, const char *fn) {

        const   int     NZIP = 4096;

        char    ln[NZIP], lb[NZIP];

        ZIPI    ibuf[NZIP];

        FILE    *fp;

        int     nr;

        int     addr=0x08000;

        fp = fopen(fn, "r");

        if (!fp)

                return;

        printf("%s:\n", fn);

        while((nr=fread(ibuf, sizeof(ZIPI), NZIP, fp))>0) {

                for(int i=0; i<nr; i++) {

                        if (bigend) {

                                ZIPI bei, lei = ibuf[i];

                                bei  = lei&0x0ff; bei<<=8; lei>>= 8;

                                bei |= lei&0x0ff; bei<<=8; lei>>= 8;

                                bei |= lei&0x0ff; bei<<=8; lei>>= 8;

                                bei |= lei&0x0ff;

                                ibuf[i] = bei;

                        }

                        zipi_to_string(ibuf[i], ln, lb);

                        // printf("%s\n", ln);

                        printf("%08x: (0x%08x %c%c%c%c) %s\n", addr++,

                                ibuf[i],

                                isgraph((ibuf[i]>>24)&0x0ff)?((ibuf[i]>>24)&0x0ff) : '.',

                                isgraph((ibuf[i]>>16)&0x0ff)?((ibuf[i]>>16)&0x0ff) : '.',

                                isgraph((ibuf[i]>> 8)&0x0ff)?((ibuf[i]>> 8)&0x0ff) : '.',

                                isgraph((ibuf[i]    )&0x0ff)?((ibuf[i]    )&0x0ff) : '.',

                                ln);

                        if (lb[0])

                                printf("%28s%s\n", "", lb);

                }

        } fclose(fp);

}

int main(int argc, char **argv) {

        bool    bigend = false;

        for(int argn=1; argn<argc; argn++) {

                if (argv[argn][0] == '-') {

                        if (argv[argn][1] == 'B')

                                bigend = true;

                        else if (argv[argn][1] == 'L')

                                bigend = false;

                } else if(access(argv[argn], R_OK)==0)

                        dump_file(bigend, argv[argn]);

        }

        return 0;

}