Subversion Repositories zipcpu

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

//

// Filename:    pdump.cpp

//

// Project:     Zip CPU -- a small, lightweight, RISC CPU 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 <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;

}

void    dump_file(const char *fn) {

        const   int     NZIP = 4096;

        char    lna[NZIP], lnb[NZIP];

        FILE    *pf;

        unsigned        addr=0x0100000, mina = -1, maxa = 0,

                        *pfcnt = NULL, *pfclk = NULL;

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

        if (pf) {

                ALT     *pfalt;

                unsigned        buf[2], total_clks = 0;

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

                        if (mina > buf[0])

                                mina = buf[0];

                        if (maxa < buf[0])

                                maxa = buf[0];

                }

                addr = mina;

                pfcnt = new unsigned[(maxa+2-mina)];

                pfclk = new unsigned[(maxa+2-mina)];

                pfalt = new ALT[(maxa+2-mina)];

                unsigned ncnt = maxa+2-mina;

                for(int i=0; i<(int)ncnt; i++)

                        pfcnt[i] = pfclk[i] = 0;

                for(int i=0; i<(int)ncnt; i++)

                        pfalt[i].addr = pfalt[i].clks = 0;

                rewind(pf);

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

                        pfcnt[buf[0]-addr]++;

                        pfclk[buf[0]-addr] += buf[1];

                        pfalt[buf[0]-addr].clks += buf[1];

                        pfalt[buf[0]-addr].addr = buf[0];

                        total_clks += buf[1];

                        printf("%08x\n", buf[0]);

                } fclose(pf);

                printf("%08x (%8d) total clocks\n", total_clks, total_clks);

                std::sort(&pfalt[0], &pfalt[ncnt], altcmp);

                for(int i=0; i<(int)ncnt; i++)

                        printf("%08x: %8d\n", pfalt[i].addr, pfalt[i].clks);

        }

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

        if (iself(fn)) {

                ELFSECTION **secpp=NULL, *secp;

                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_start+(j<<2);

                                w = buildword((const unsigned char *)&secp->m_data[(j<<2)]);

                                zipi_to_double_string(a, w, lna, lnb);

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

                                printf("%08x[%08x-%08x]: (0x%08x %c%c%c%c) ",

                                        a, maxa, mina, 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 ((a>=mina)&&(a<maxa)&&(pfcnt))

                                        printf("%8d %8d ", pfcnt[a-mina], pfclk[a-mina]);

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

                                if (lnb[0])

                                        printf("-%24s%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;

}