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/* mprofiler.c -- memory profiling utility

   Copyright (C) 2002 Marko Mlinar, markom@opencores.org

This file is part of OpenRISC 1000 Architectural Simulator.

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.

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

along with this program; if not, write to the Free Software

Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */

/* Command line utility, that displays profiling information, generated

   by or1ksim. (use --mprofile option at command line, when running or1ksim.  */

#if HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#if HAVE_MALLOC_H

#include <malloc.h>     /* calloc, free */

#endif

#include "support/profile.h"

#include "mprofiler.h"

#include "sim-config.h"

struct memory_hash {

  struct memory_hash *next;

  unsigned long addr;

  unsigned long cnt[3];    /* Various counters */

} *hash[HASH_SIZE];

/* Groups size -- how much addresses should be joined together */

int group_bits = 2;

/* Start address */

int start_addr = 0;

/* End address */

int end_addr = 0xffffffff;

/* File to read from */

static FILE *fprof = 0;

void mp_help ()

{

  PRINTF ("mprofiler <-d|-p|-a|-w> [-f filename] [-g group] from to\n");

  PRINTF ("\t-d\t--detail\t\tdetailed output\n");

  PRINTF ("\t-p\t--pretty\t\tpretty output\n");

  PRINTF ("\t-a\t--access\t\toutput accesses only\n");

  PRINTF ("\t-w\t--width\t\t\toutput by width\n");

  PRINTF ("\t-f\t--filename filename\tspecify mprofile file [sim.mprofile]\n");

  PRINTF ("\t-g\t--group bits\t\tgroup 2^bits successive\n");

  PRINTF ("\t\t\t\t\taddresses together [2]\n");

  PRINTF ("\t-h\t--help\t\t\toutput this screen\n");

}

void hash_add (unsigned long addr, int index)

{

  struct memory_hash *h = hash[HASH_FUNC(addr)];

  while (h && h->addr != addr) h = h->next;

  if (!h) {

    h = (struct memory_hash *)malloc (sizeof (struct memory_hash));

    h->next = hash[HASH_FUNC(addr)];

    hash[HASH_FUNC(addr)] = h;

    h->addr = addr;

    h->cnt[0] = h->cnt[1] = h->cnt[2] = 0;

  }

  h->cnt[index]++;

}

unsigned long hash_get (unsigned long addr, int index)

{

  struct memory_hash *h = hash[HASH_FUNC(addr)];

  while (h && h->addr != addr) h = h->next;

  if (!h) return 0;

  return h->cnt[index];

}

void init ()

{

  int i;

  for (i = 0; i < HASH_SIZE; i++)

    hash[i] = NULL;

}

void read_file (FILE *f, int mode)

{

  struct mprofentry_struct buf[BUF_SIZE];

  int num_read;

  do {

    int i;

    num_read = fread (buf, sizeof (struct mprofentry_struct), BUF_SIZE, f);

    for (i = 0; i < num_read; i++) if (buf[i].addr >= start_addr && buf[i].addr <= end_addr) {

      int index;

      unsigned t = buf[i].type;

      if (t > 64) {

        PRINTF ("!");

        t = 0;

      }

      if (mode == MODE_WIDTH) t >>= 3;

      else t &= 0x7;

      switch (t) {

        case 1: index = 0; break;

        case 2: index = 1; break;

        case 4: index = 2; break;

        default:

          index = 0;

          PRINTF ("!!!!");

          break;

      }

      hash_add (buf[i].addr >> group_bits, index);

    }

  } while (num_read > 0);

}

static inline int nbits (unsigned long a)

{

  int cnt = 0;

  int b = a;

  if (!a) return 0;

  while (a) a >>= 1, cnt++;

  if (cnt > 1 && ((b >> (cnt - 2)) & 1))

    cnt = cnt * 2 + 1;

  else

    cnt *= 2;

  return cnt - 1;

}

void printout (int mode)

{

  unsigned long addr = start_addr & ~((1 << group_bits) - 1);

  PRINTF ("start = %08x (%08x); end = %08x; group_bits = %08x\n", start_addr, addr, end_addr, (1 << group_bits) - 1);

  for (; addr <= end_addr; addr += (1 << group_bits)) {

    int i;

    unsigned long a = hash_get (addr >> group_bits, 0);

    unsigned long b = hash_get (addr >> group_bits, 1);

    unsigned long c = hash_get (addr >> group_bits, 2);

    PRINTF ("%08x:", addr);

    switch (mode) {

      case MODE_DETAIL:

        if (a) PRINTF (" %10i R", a);

        else PRINTF ("            R");

        if (b) PRINTF (" %10i W", b);

        else PRINTF ("            W");

        if (c) PRINTF (" %10i F", c);

        else PRINTF ("            F");

        break;

      case MODE_ACCESS:

        PRINTF (" %10i", a + b + c);

        break;

      case MODE_PRETTY:

        PRINTF (" %10i ", a + b + c);

        for (i = 0; i < nbits (a + b + c); i++)

          PRINTF ("#");

#if 0

        for (; i < 64; i++)

          PRINTF (".");

#endif

        break;

      case MODE_WIDTH:

        if (a) PRINTF (" %10i B", a);

        else PRINTF ("            B");

        if (b) PRINTF (" %10i H", b);

        else PRINTF ("            H");

        if (c) PRINTF (" %10i W", c);

        else PRINTF ("            W");

        break;

    }

    PRINTF ("\n");

    if (addr >= addr + (1 << group_bits)) break; /* Overflow? */

  }

}

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

{

  char fmprofname[50] = "sim.mprofile";

  int param = 0;

  int mode = MODE_DETAIL;

  argv++; argc--;

  while (argc > 0) {

    if (!strcmp(argv[0], "-d") || !strcmp(argv[0], "--detail")) {

      mode = MODE_DETAIL;

      argv++; argc--;

    } else if (!strcmp(argv[0], "-p") || !strcmp(argv[0], "--pretty")) {

      mode = MODE_PRETTY;

      argv++; argc--;

    } else if (!strcmp(argv[0], "-a") || !strcmp(argv[0], "--access")) {

      mode = MODE_ACCESS;

      argv++; argc--;

    } else if (!strcmp(argv[0], "-w") || !strcmp(argv[0], "--width")) {

      mode = MODE_WIDTH;

      argv++; argc--;

    } else if (!strcmp(argv[0], "-g") || !strcmp(argv[0], "--group")) {

      argv++; argc--;

      group_bits = strtoul (argv[0], NULL, 0);

      argv++; argc--;

    } else if (!strcmp(argv[0], "-h") || !strcmp(argv[0], "--help")) {

      mp_help ();

      return 0;

    } else if (!strcmp(argv[0], "-f") || !strcmp(argv[0], "--filename")) {

      argv++; argc--;

      strcpy (&fmprofname[0], argv[0]);

      argv++; argc--;

    } else {

      switch (param) {

        case 0:

          start_addr = strtoul (argv[0], NULL, 0);

          break;

        case 1:

          end_addr = strtoul (argv[0], NULL, 0);

          break;

        default:

          fprintf (stderr, "Invalid number of parameters.\n");

          return -1;

      }

      argv++; argc--; param++;

    }

  }

  fprof = fopen (fmprofname, "rm");

  if (!fprof) {

    fprintf (stderr, "Cannot open profile file: %s\n", fmprofname);

    return 1;

  }

  init ();

  read_file (fprof, mode);

  fclose (fprof);

  printout (mode);

  return 0;

}