Subversion Repositories zipcpu

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

//

// Filename:    pdump.cpp

//

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

//

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

//              the zip-objdump program that is part of the binutils suite, this

//      program takes the pfile.bin output of the bench test suite and adds

//      profiling information to the output.  It's useful for finding out where,

//      at least in simulation, your time is being spent.  It can also be used,

//      after the fact, to get a trace of what instructions the CPU executed.

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

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

//

// Copyright (C) 2015,2017, 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 <algorithm>

#include <map>

#include <stdio.h>

#include <unistd.h>

#include <ctype.h>

#include "zipelf.h"

#include "zopcodes.h"

#include "byteswap.h"

typedef uint32_t        ZIPI;   // A ZipCPU instruction word

typedef struct  { unsigned clks, addr; } ALT;

bool    altcmp(const ALT &a, const ALT &b) {

        return a.clks < b.clks;

}

typedef struct { unsigned clks, hits, addr; } insn_stat;

typedef std::map<unsigned, insn_stat *> vcd_profile;

void    dump_file(const char *fn) {

        const   int     NZIP = 4096;

        char    lna[NZIP], lnb[NZIP];

        FILE    *pf;

        unsigned        addr=0x0100000;

        vcd_profile     vp;

        pf = fopen("pfile.bin","rb");

        if (pf) {

                unsigned        buf[2];

                while(2 == fread(buf, sizeof(unsigned), 2, pf)) {

                        addr = buf[0];

                        if (vp.count(addr)>0) {

                                vp[addr]->hits++;

                                vp[addr]->clks += buf[1];

                        } else {

                                insn_stat       *is;

                                is = new insn_stat;

                                is->hits = 1;

                                is->clks = buf[1];

                                is->addr = addr;

                                vp[addr] = is;

                        }

                }

        }

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

        if (iself(fn)) {

                ELFSECTION **secpp=NULL, *secp;

                double          cpi;

                unsigned        entry;

                elfread(fn, entry, secpp);

                for(int i=0; secpp[i]->m_len; i++) {

                        secp = secpp[i];

                        for(unsigned j=0; j<secp->m_len; j+=4) {

                                uint32_t        w, a;

                                a = secp->m_vaddr+j;

                                w = buildword((const unsigned char *)&secp->m_data[j]);

                                zipi_to_double_string(a, w, lna, lnb);

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

                                printf("%08x: (0x%08x %c%c%c%c) ", a, w,

                                        isgraph((w>>24)&0x0ff)?((w>>24)&0x0ff) : '.',

                                        isgraph((w>>16)&0x0ff)?((w>>16)&0x0ff) : '.',

                                        isgraph((w>> 8)&0x0ff)?((w>> 8)&0x0ff) : '.',

                                        isgraph((w    )&0x0ff)?((w    )&0x0ff) : '.'

                                        );

                                if (vp.count(a)>0) {

                                        insn_stat *is = vp[a];

                                        cpi = is->clks / (double)is->hits;

                                        printf("%8d %8d %4.1f ", is->hits, is->clks, cpi);

                                } else

                                        printf("%23s", "");

                                printf("%s\n", lna);

                                if (lnb[0])

                                        printf("-%50s%s\n", "", lnb);

                        }

                }

        }

}

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

        if (argc <= 1)

                printf("USAGE: pdump <dump-file> | less\n");

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

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

                        dump_file(argv[argn]);

        }

        return 0;

}