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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"

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 mmustats_entry dmmu_stats;       /* data cache stats */

struct raw_stats raw_stats;             /* RAW hazard stats */

struct slp_stats slp_stats;             /* SLP stats */

/* Dependency */

int check_depend()

{

        debug("check_depend");

        if (depend_operands(icomplet[0].dependdst, iqueue[0].dependsrc1) +

            depend_operands(icomplet[0].dependdst, iqueue[0].dependsrc2))

                return 1;

        else

                return 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("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 != 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));

        memset(&slp_stats, 0, sizeof(slp_stats));

}

/* SLP

1: R

2:  R

3:   R

OK

1:     W

2: R

3: R

flush 2 3

1:     R

2: W

3:  R

OK

1: R

2:     W

3:  R

flush 3

flushing: don't flush if written location hasn't change after the write since

original read got correct data.

*/

void slp_checkaccess(unsigned long addr, char type)

{

        if ((addr < (MEMORY_START + MEMORY_LEN - 4000)) &&

            slp_stats.supercnt && (type == SLP_MEMWRITE)) {

                slp_stats.supercalls++;

                slp_stats.supercnt = 0;

        }

}

void slp_func_entry()

{

        if (++slp_stats.curdepth > slp_stats.maxdepth)

                slp_stats.maxdepth = slp_stats.curdepth;

        slp_stats.calls++;

        slp_stats.supercnt++;

}

void slp_func_exit()

{

        slp_stats.curdepth--;

}

void printstats(int which)

{

        int i, all = 0, dependall = 0;

        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]);

        if (which == 6) {

                printf("SLP:\n");

                printf("maxdepth: %6d  calls: %6d\n", slp_stats.maxdepth, slp_stats.calls);

                printf("calls: %6d    supercalls: %6d\n", slp_stats.calls, slp_stats.supercalls);

        }

        printf("SUM: %d instructions (dynamic, functional units stats)  depend: %d%%\n", all, (dependall * 100) / SD(all));

        printf("Byte ADD: %d instructions\n", mstats.byteadd);

        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);

        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);

        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);

        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);

        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);

}