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/* stats.c -- Various statistics about instruction scheduling etc.
   Copyright (C) 1999 Damjan Lampret, lampret@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. */
 
#include <stdio.h>
#include <ctype.h>
#include <string.h>
 
#include "abstract.h"
#include "stats.h"
#include "sim-config.h"
#include "sprs.h"
#include "spr_defs.h"
 
const char func_unit_str[30][30] = { "unknown", "arith", "shift", "compare",
  "branch", "jump", "load", "store", "movimm", "move", "extend", "nop" };
 
struct dstats_entry dstats[DSTATS_LEN]; /* dependency stats */
struct sstats_entry sstats[SSTATS_LEN]; /* single stats */
struct fstats_entry fstats[FSTATS_LEN]; /* functional units stats */
struct mstats_entry mstats;   /* misc units stats */
struct cachestats_entry ic_stats; /* instruction cache stats */
struct cachestats_entry dc_stats; /* data cache stats */
struct immustats_entry immu_stats;  /* insn mmu stats */
struct dmmustats_entry dmmu_stats;  /* data mmu stats */
struct raw_stats raw_stats;   /* RAW hazard stats */
 
/* Dependency */
 
int check_depend()
{ 
  debug(5,"check_depend\n");
  return depend_operands(&icomplet[0], &iqueue[0]);
}
 
void addsstats(char *item, int cnt_dynamic, int cnt_static)
{
  int i = 0;
 
  while(strcmp(sstats[i].insn, item) && (sstats[i].cnt_static > 0) &&
        (sstats[i].cnt_static > 0) && (i < SSTATS_LEN))
    i++;
 
  if (i >= SSTATS_LEN - 1) return;
 
  if (strcmp(sstats[i].insn, item) == 0) {
    sstats[i].cnt_dynamic += cnt_dynamic;
    sstats[i].cnt_static += cnt_static;
  }
  else {
    strcpy(sstats[i].insn, item);
    sstats[i].cnt_dynamic = cnt_dynamic;
    sstats[i].cnt_static = cnt_static;
  }
}
 
void adddstats(char *item1, char *item2, int cnt_dynamic, int depend)
{
  int i = 0;
 
  debug(3,"adddstats start\n");
 
  while((strcmp(dstats[i].insn1, item1) || strcmp(dstats[i].insn2, item2)) &&
        (strlen(dstats[i].insn1)) &&
        (i < DSTATS_LEN))
    i++;
 
  if (i >= DSTATS_LEN - 1) return;
 
  if ((strcmp(dstats[i].insn1, item1) == 0) &&
      (strcmp(dstats[i].insn2, item2) == 0)) {
    dstats[i].cnt_dynamic += cnt_dynamic;
    dstats[i].depend += depend;
  }
  else {
    strcpy(dstats[i].insn1, item1);
    strcpy(dstats[i].insn2, item2);
    dstats[i].cnt_dynamic = cnt_dynamic;
    dstats[i].depend = depend;
  }
}
 
void addfstats(enum insn_type item1, enum insn_type item2, int cnt_dynamic, int depend)
{
  int i = 0;
 
  while(((fstats[i].insn1 != item1) || (fstats[i].insn2 != item2)) &&
        (fstats[i].insn1 != it_unknown) &&
        (i < FSTATS_LEN))
    i++;
 
  if (i >= FSTATS_LEN - 1) return;
 
  if ((fstats[i].insn1 == item1) &&
      (fstats[i].insn2 == item2)) {
    fstats[i].cnt_dynamic += cnt_dynamic;
    fstats[i].depend += depend;
  }
  else {
    fstats[i].insn1 = item1;
    fstats[i].insn2 = item2;
    fstats[i].cnt_dynamic = cnt_dynamic;
    fstats[i].depend = depend;
  }
}
 
void initstats()
{
  memset(sstats, 0, sizeof(sstats));
  memset(dstats, 0, sizeof(dstats));
  memset(fstats, 0, sizeof(fstats));
  memset(&mstats, 0, sizeof(mstats));
  memset(&ic_stats, 0, sizeof(ic_stats));
  memset(&dc_stats, 0, sizeof(dc_stats));
  memset(&raw_stats, 0, sizeof(raw_stats));
}
 
void printistats(int which)
{
  int i, all = 0, dependall = 0;
 
  if (!config.cpu.dependstats) {
    printf("Hazard analysis disabled. Enable it to see analysis results.\n");
    return;
  }
 
  for(i = 0; i < SSTATS_LEN; i++)
    all += sstats[i].cnt_static;
 
  for(i = 0; i < SSTATS_LEN; i++)
    if (sstats[i].cnt_static && (which == 1))
      printf(" %s\t\tused %6dx (%2d%%)\n", sstats[i].insn, sstats[i].cnt_static, (sstats[i].cnt_static * 100)/all);
 
  printf("SUM: %d instructions (static, single stats)\n", all);
 
  all = 0;
 
  for(i = 0; i < SSTATS_LEN; i++)
    all += sstats[i].cnt_dynamic;
 
  for(i = 0; i < SSTATS_LEN; i++)
    if (sstats[i].cnt_dynamic && (which == 2))
      printf(" %s\t\tused %6dx (%2d%%)\n", sstats[i].insn, sstats[i].cnt_dynamic, (sstats[i].cnt_dynamic * 100)/all);
 
  printf("SUM: %d instructions (dynamic, single stats)\n", all);
 
  all = 0;
  dependall = 0;
  for(i = 0; i < DSTATS_LEN; i++) {
    all += dstats[i].cnt_dynamic;
    dependall += dstats[i].depend;
  }
 
  for(i = 0; i < DSTATS_LEN; i++)
    if (dstats[i].cnt_dynamic && (which == 3)) {
      printf(" %s, %s ", dstats[i].insn1, dstats[i].insn2);
      printf("\t\t\t%6dx (%2d%%)", dstats[i].cnt_dynamic, (dstats[i].cnt_dynamic * 100)/all);
      printf("   depend: %3d%%\n", (dstats[i].depend * 100) / dstats[i].cnt_dynamic);
    }
 
  printf("SUM: %d instructions (dynamic, dependency stats)  depend: %d%%\n", all, (dependall * 100) / all);
 
  all = 0;
  dependall = 0;
  for(i = 0; i < FSTATS_LEN; i++) {
    all += fstats[i].cnt_dynamic;
    dependall += fstats[i].depend;
  }
 
  for(i = 0; i < FSTATS_LEN; i++)
    if (fstats[i].cnt_dynamic && (which == 4)) {
      printf(" %s,", func_unit_str[fstats[i].insn1]);
      printf(" %s", func_unit_str[fstats[i].insn2]);
      printf("\t\t\t%6dx (%2d%%)", fstats[i].cnt_dynamic, (fstats[i].cnt_dynamic * 100)/all);
      printf("   depend: %3d%%\n", (fstats[i].depend * 100) / fstats[i].cnt_dynamic);
    }
 
  for(i = 0; (i < RAW_RANGE) && (which == 5); i++)
    printf(" Register set and reused in %d. cycle: %d cases\n", i, raw_stats.range[i]);
 
  printf("SUM: %d instructions (dynamic, functional units stats)  depend: %d%%\n", all, (dependall * 100) / SD(all));
  printf("Byte ADD: %d instructions\n", mstats.byteadd);
 
}
 
void printotherstats(int which)
{
  int i, all = 0, dependall = 0;
 
  if (config.cpu.bpb) {
    printf("bnf: %d (%d%%) taken,", mstats.beqz.taken, (mstats.beqz.taken * 100) / SD(mstats.beqz.taken + mstats.beqz.nottaken));
    printf(" %d (%d%%) not taken,", mstats.beqz.nottaken, (mstats.beqz.nottaken * 100) / SD(mstats.beqz.taken + mstats.beqz.nottaken));
    printf(" %d (%d%%) forward,", mstats.beqz.forward, (mstats.beqz.forward * 100) / SD(mstats.beqz.forward + mstats.beqz.backward));
    printf(" %d (%d%%) backward\n", mstats.beqz.backward, (mstats.beqz.backward * 100) / SD(mstats.beqz.forward + mstats.beqz.backward));
    printf("bf: %d (%d%%) taken,", mstats.bnez.taken, (mstats.bnez.taken * 100) / SD(mstats.bnez.taken + mstats.bnez.nottaken));
    printf(" %d (%d%%) not taken,", mstats.bnez.nottaken, (mstats.bnez.nottaken * 100) / SD(mstats.bnez.taken + mstats.bnez.nottaken));
    printf(" %d (%d%%) forward,", mstats.bnez.forward, (mstats.bnez.forward * 100) / SD(mstats.bnez.forward + mstats.bnez.backward));
    printf(" %d (%d%%) backward\n", mstats.bnez.backward, (mstats.bnez.backward * 100) / SD(mstats.bnez.forward + mstats.bnez.backward));
    printf("StaticBP bnf: correct %d%% (forward)\n", (mstats.sbp_bnf.correct * 100) / SD(mstats.sbp_bnf.all));
    printf("StaticBP bf: correct %d%% (backward)\n", (mstats.sbp_bf.correct * 100) / SD(mstats.sbp_bf.all));
    printf("BPB: hit %d (correct %d%%), miss %d\n", mstats.bpb.hit, (mstats.bpb.correct * 100) / SD(mstats.bpb.hit), mstats.bpb.miss);
  } else
    printf("BPB simulation disabled. Enable it to see BPB analysis\n");
 
  if (config.cpu.btic) {
    printf("BTIC: hit %d(%d%%), miss %d\n", mstats.btic.hit, (mstats.btic.hit * 100) / SD(mstats.btic.hit + mstats.btic.miss), mstats.btic.miss);
  } else
    printf("BTIC simulation disabled. Enabled it to see BTIC analysis\n");
 
  if (testsprbits(SPR_UPR, SPR_UPR_ICP)) {
    printf("IC read:  hit %d(%d%%), miss %d\n", ic_stats.readhit, (ic_stats.readhit * 100) / SD(ic_stats.readhit + ic_stats.readmiss), ic_stats.readmiss);
  } else
    printf("No ICache. Set UPR[ICP]\n");
 
  if (testsprbits(SPR_UPR, SPR_UPR_DCP)) {
    printf("DC read:  hit %d(%d%%), miss %d\n", dc_stats.readhit, (dc_stats.readhit * 100) / SD(dc_stats.readhit + dc_stats.readmiss), dc_stats.readmiss);
    printf("DC write: hit %d(%d%%), miss %d\n", dc_stats.writehit, (dc_stats.writehit * 100) / SD(dc_stats.writehit + dc_stats.writemiss), dc_stats.writemiss);
  } else
    printf("No DCache. Set UPR[DCP]\n");
 
  if (testsprbits(SPR_UPR, SPR_UPR_IMP)) {
    printf("IMMU read:  hit %d(%d%%), miss %d\n", immu_stats.fetch_tlbhit, (immu_stats.fetch_tlbhit * 100) / SD(immu_stats.fetch_tlbhit + immu_stats.fetch_tlbmiss), immu_stats.fetch_tlbmiss);
  } else
    printf("No IMMU. Set UPR[IMP]\n");
 
  if (testsprbits(SPR_UPR, SPR_UPR_DMP)) {
    printf("DMMU read:  hit %d(%d%%), miss %d\n", dmmu_stats.loads_tlbhit, (dmmu_stats.loads_tlbhit * 100) / SD(dmmu_stats.loads_tlbhit + dmmu_stats.loads_tlbmiss), dmmu_stats.loads_tlbmiss);
  } else
    printf("No DMMU. Set UPR[DMP]\n");
}
 
void printstats(int which)
{
  printistats(which);
  if (which == 5)
    printotherstats(which);
}