use strict;
use IO::Handle;
use Getopt::Long;

sub update_regs;
sub print_regs;
sub error;
sub b2h;
sub format_time;

$SIG{__WARN__} = sub {die $_[0]};

# Initialize and defines all kinds of variables
#----------------------------------------------
$| = 1; 				# autoflush
my(@gl);				# global register level per thread
my(@tl);				# trap level per thread
my(@cwp);				# current window pointer per thread
my($logfile);				# what file to read

# global, FP, integer,  asi registers
my(@gregs, @fpregs, @regs, @asi_reg);

my($pc, $inst);				# program counter, instructions
my(%diag_code, %label);			# disassembled diag code and labels
my($time, $spc, $thr, $proc, $reg, $val, $win, $instr, $tmp);
my(@instr_list);			# instruction list
my($PROG)       = ($0=~ m%([^/]+)$%);   # regreport real name

my(%miss);				# additional info - less important
my(%notintlb);				# additional info - less important 

my($i, $k);
my $version =  '1.NN';

print "===============================================\n";
print "=== OpenSPARC T1 Vlog Version $version	   ===\n";
print "===============================================\n";

my @Options = qw( debug sas mom h help ccx l2 dram cycles sort! perf);
my %opt = ();
$opt{debug}	= 0;
$opt{sas}	= 0;
$opt{mom}	= 0;
$opt{h}		= 0;
$opt{help}	= 0;
$opt{ccx}	= 0;
$opt{l2}	= 0;
$opt{dram}	= 0;
$opt{cycles}	= 0;
$opt{sort}	= 1;
$opt{perf}	= 0;

GetOptions(\%opt, @Options) or die "Error in arguments!\n";
my($debug) 	= $opt{debug};
my($sas) 	= $opt{sas};
my($mom) 	= $opt{mom};
my($ccx) 	= $opt{ccx};
my($l2) 	= $opt{l2};
my($dram) 	= $opt{dram};
my($h) 		= $opt{h};
my($help)	= $opt{help};
my($cycles)	= $opt{cycles};
my($sorti)	= $opt{sort};
my($perf)	= $opt{perf};


if($h || $help) {
    print "===============================================\n";
    print "=== Version $PROG ===\n";
    print "Usage:   vlog [logfilename|path_to_sim.log] [-debug -h -ccx -l2 -dram -cycles -[no]sort] [-perf] \n";
    print "-ccx  	prints ccx related messages\n";
    print "-l2  	prints l2 related messages\n";
    print "-dram  	prints dram related messages\n";
    print "-h       	prints out this screen\n";
    print "-debug   	is for  script debug\n";
    print "           	It will probably be obsoleted in the future \n";
    print "-cycles 	prints the cycles and not the time             \n";
    print "-sort 	will sort sim.log according to time stamps first [default is on]\n";
    print "-perf 	will print all kinds of performance data - I, D miss e.t.c.\n";
    print "-mom 	Special mom sas.log file processing\n";
    print "===============================================\n";
    print "Examples:\n";
    print "vlog -ccx -l2 -dram 	>! vlog.log\n";
    print "vlog         		>! vlog.log\n";
    print "vlog <my_path>/sim.log  	>! vlog.log\n";
    print "===============================================\n";
    exit 0;
  }

if($debug)	{ print "Debug mode on\n"; }
if($sas)	{ print "sas mode\n"; }
if($mom)	{ print "mom mode\n"; }
if($sorti)	{ print "sort mode\n"; }
if($perf)	{ print "perf mode\n"; }

#==========================================
# initialize register hashes.
#==========================================
for ($i = 0; $i < 32; $i++){
  $tl[$i] = 5;
  $gl[$i] = 3;
  $cwp[$i] = 0;
  $asi_reg[$i] = "x";
  for ($k = 0; $k < 32; $k++){
    $gregs[$i][$k] = "x";
  }
  $gregs[$i][0]  = 0x0;
  $gregs[$i][8]  = 0x0;
  $gregs[$i][16] = 0x0;
  $gregs[$i][24] = 0x0;

  for ($k = 0; $k < 64; $k++){
    $fpregs[$i][$k] = "x";
  }

  for ($k = 0; $k < 256; $k++){
    $regs[$i][$k] = "x";
  }
}


#==========================================
# figure out logfile to read
#==========================================
my $logfilename = $mom ? "sas.log" : "sim.log";

if($#ARGV >= 0){

  my @pathname = split '/' , $ARGV[0];
  if($pathname[$#pathname] =~ /$logfilename/){
    $#pathname--;
  }
  if(scalar(@pathname)){
    chdir join '/', @pathname or die "cannot change dir\n";
    print "changed dir to ";
  }else{
    print "current dir is ";
  }
  my $temp = `pwd`;
  print "$temp\n";
}

$logfile= (-f $logfilename)    ? $logfilename :
          (-f "$logfilename.gz") ? "$logfilename.gz" :
          &error("Logfile $logfilename or $logfilename.gz not found");


print "\n===== Opening $logfile ======\n";
#-------------------------------------
# log file in N1 is unsorted mess. 
# sort it unless soritng is disabled.
# sort by forking a sorting process.
#-------------------------------------
if($sorti && !$mom){
  my $pid = open(VCS, "-|");
  unless (defined $pid){die "cannot fork $!\n"}
  if(!$pid){sorti();}
}
else{
  if($logfile =~ /\.gz$/) {
    open(VCS, "gunzip -c  $logfile |") || die "cannot open gunzip -c $logfile";
  }else{
    open(VCS, "< $logfile") || die "cannot open $logfile";
  }
}

#============================================================

# get the labels inside the diag.s
if((! -f "symbol.tbl") &&(-f "symbol.tbl.gz")){
  system("gunzip symbol.tbl.gz");
}

if(! -f "symbol.tbl") {print "no symbol.tbl\n"; exit 0;}
open(SYM , "symbol.tbl")  || die " BAD BAD symbol.tbl opening";
while(<SYM>){
  chop;
  s/\.\w+\.//g;
  my @symline = split /\s+/;
  if($#symline != 3){die "something is wrong with symbol.tbl\n";}

  my $pc = truncate_len($symline[1]);
  if(exists $label{$pc} and $label{$pc} eq 'main'){
    next;
  }
  $label{$pc} = $symline[0];
  print "label $label{$pc}, $pc\n" if($debug);
}

# disassemble the diag.
#---------------------
my(@diag_exe_files) = `ls diag*.exe*`;
if(!(@diag_exe_files)){ 
  print "Warning: No diag.\*exe files!!!\n";
}
else{
  my($exe_file, $exe_file_gz);
  foreach $exe_file (@diag_exe_files){
    chop $exe_file;
    $exe_file_gz = $exe_file . ".gz";
    if(!(-e $exe_file) && (-e $exe_file_gz)){ system("gunzip $exe_file_gz"); }
    print "Will extract instruction info from:  $exe_file \n";

    open(DIS, "g_objdump -m sparc:v9B -d $exe_file | ") || die "BAD objdump";
    while(<DIS>){
      s/^\s+//;
      if(/^([a-f\d]+):\s+.. .. .. ..\s+(.*)$/) {
        $pc = truncate_len($1);
        $inst = $2;

        $inst =~ s/\s*!.*$//;
        if($inst =~ /\((\d+)\)/){	# convert from decimal to hex.
	  my $inst_left  = $` . '(0x'; 
	  my $inst_cent  = sprintf("%lx",$1);
	  my $inst_right  = ')' . $';
          my $asi_str = asi_mnem($inst_cent);
          $inst = $inst_left . $inst_cent . ' ' . $asi_str . $inst_right;
        }
        $diag_code{$pc}= $inst;
      }

    }	### of while...
    close(DIS);

  } ### of foreach
} # of if


$| = 0; 	# autoflush
#============================================================
my $found_ctime = 0;
my $pll_freq    = 0;
my $cmp_clk_divider    = 0;
my($ctime) 	= 0;

# the main loop:
#---------------
while(<VCS>) {
  chop;

  s/-MATCH/-updated/g;

  if(/MISMATCH/)	{ print ;print "\n"; next;}
  elsif(/timeout/i)	{ print ;print "\n"; next;}
  elsif(/error/i)	{ print ;print "\n"; next;}
  elsif(/fail/i)	{ print ;print "\n"; next;}
  elsif(/wrong/i)	{ print ;print "\n"; next;}
  elsif(/good trap/i)	{ print ;print "\n"; next;}

# some messing around needed to calculate the clock period.
#----------------------------------------------------------
  elsif(/cmp_clk period\s*=\s*(\d+)/){
    $ctime = $1;
    print "cycle time is $ctime\n";
    die "Found clock period of 0!\n" unless $ctime;
    $found_ctime = 1;
  }
  elsif(!$found_ctime && /cmp_clk divider\s*=\s*(\d+)/){
    $cmp_clk_divider = $1;
    print "cmp_clk_divider is $cmp_clk_divider\n";
  }
  elsif(!$found_ctime && /pll_clk frequency\s*=\s*(\d+)/i){
    $pll_freq = $1;
    print "pll_freq time is $pll_freq\n";
  }
  elsif(!$found_ctime && /Selected Core Clock Frequency\s(\d+)\s*MHz/){
    if($pll_freq && $cmp_clk_divider){
      my $pll_period;
      my %pll_periods = (	# HACK!  These are periods hardcoded from cmp_clk.v.
               2000 => 250,	# Hopefully, we're using a version of hte model that has the
               2200 => 227,	# "cmp_period" defined, so we don't have to use this.
               2333 => 214,
	       2334 => 214,
               2400 => 208,
               2550 => 196,
               2600 => 192,
               2800 => 179,
               default => 208,
              );
      $pll_period = exists $pll_periods{$pll_freq} ? $pll_periods{$pll_freq} : $pll_periods{default};
      $ctime = $pll_period * 2 * $cmp_clk_divider;
      print "Computed cycle_period from PLL ($pll_freq) and div ".  "($cmp_clk_divider): $ctime\n";
    } else {
# Couldn't find anything but the frequency message.  Use that.
#------------------------------------------------------------
      my $freq = $1;
      $ctime = int(1 / $freq * 1000000);
      print "Guessed at cycle_period from frequency ($freq): $ctime\n";
    }
    $found_ctime = 1;
  }
#=============================
# example line:
#567: [th02] <v:0x0000000000134000> <    not in tlb    >
# this is not very important`. It was nice to the perofrmace
# debuggers.
#=============================
  elsif(/th([\dabcdef]+)\]\s+\<v:0x(\w+)>.*not in tlb/i){
    $spc  = $1 / 4;
    $thr  = $1 % 4;
    $val  = truncate_len($2);
    $notintlb{$spc}{$thr}{$val} = 1;
    print "switch on tlb message $_\n" if($debug);
  }
# this is VERY IMPORTANT - the register updates:
  elsif(/^(\d+):.*reg.updated\s*->\s*spc.(\d).\s*thread.(\d)/){
    $time = format_time($1, $ctime, $cycles);
    $spc  = $2;
    $thr  = $3;
    $proc  = 4 * $spc + $thr;

    if(/float_reg.updated.*reg#\((\w+)\).*val = (\w+)/){
       $reg   = "%" . $1;
       $val = $2;
       
       printf "%-10s: C%dT%d\t\tFPREG UPDATE <%s = %s>\n", $time, $spc, $thr, $reg, $val;
       update_regs;

       my @chars = split //, $val;
       if($#chars > 7){
         if($reg =~ /%[df](\d+)/){
           my $newreg =  $1 + 1;
           $reg   = "%f" . $newreg;
           $val   = substr $val, 8;
           update_regs;
         }
         else{
           die " $time:  something is wrong with FP updates\n";
         }
       }
    }
    elsif(/window.(\w+).*reg#\((\w+)\).*val = (\w+)/){
       $win = $1;
       $reg = "%" . $2;
       $val = $3;
       printf          "%-10s: C%dT%d\t\tREG UPDATE <%s = %s> in window %s\n", $time, $spc, $thr, $reg, $val, $win;
       update_regs;
    }
    elsif(/asi_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      $asi_reg[$proc] = $2;
      printf "%-10s: C%dT%d\t\tASI REG UPDATE <ASI = $2> in window %s\n", $time, $spc, $thr, $1;
    }
    elsif(/canrestore_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      printf "%-10s: C%dT%d\t\tCANRESTORE REG UPDATE <CANRESTORE = $2> in window %s\n", $time, $spc, $thr, $1;
    }
    elsif(/cansave_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      printf "%-10s: C%dT%d\t\tCANSAVE REG UPDATE <CANSAVE = $2> in window %s\n", $time, $spc, $thr, $1;
    }
    elsif(/ccr_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      printf "%-10s: C%dT%d\t\tCCR REG UPDATE <CCR = $2> in window %s\n", $time, $spc, $thr, $1;
    }
    elsif(/cleanwin_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      printf "%-10s: C%dT%d\t\tCLEANWIN REG UPDATE <CLEANWIN = $2> in window %s\n", $time, $spc, $thr, $1;
    }
    elsif(/cwp_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tCWP REG UPDATE <CWP = %s> in window %s\n", $time, $spc, $thr, $2, $1;
      $cwp[$proc] = $1;
    }
    elsif(/hpstate_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tHPSTATE REG UPDATE <HPSTATE = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/htba_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tHTBA REG UPDATE <HTBA = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/hstate2_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tHSTATE2 REG UPDATE <HSTATE2 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/hstate3_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tHSTATE3 REG UPDATE <HSTATE3 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/otherwin_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tOTHERWIN REG UPDATE <OTHERWIN = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/pil_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tPIL REG UPDATE <PIL = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/pstate_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tPSTATE REG UPDATE <PSTATE = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/tba_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTBA REG UPDATE <TBA = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/tl_reg.updated.*window.(\w+).*val = (\w+)/){
      $tl[$proc] = $2;
      printf "%-10s: C%dT%d\t\tTL REG UPDATE <TL = %d>\n", $time, $spc, $thr, $tl[$proc];
    }
    elsif(/gl_reg.updated.*window.(\w+).*val = 0*(\w+)/){
      $gl[$proc] = $2;
      printf "%-10s: C%dT%d\t\tGL REG UPDATE <GL = $2>\n", $time, $spc, $thr;
    }
    elsif(/tstate1_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTSTATE1 REG UPDATE <TSTATE1 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/tstate2_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTSTATE2 REG UPDATE <TSTATE2 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/ttype1_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTTYPE1 REG UPDATE <TTYPE1 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/ttype2_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTTYPE2 REG UPDATE <TTYPE2 = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/wstate_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tWSTATE REG UPDATE <WSTATE = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/hstick_cmpr_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tHSTICK_CMPR REG UPDATE <TICK_CMPR = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/stick_cmpr_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tSTICK_CMPR REG UPDATE <TICK_CMPR = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/tick_cmpr_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tTICK_CMPR REG UPDATE <TICK_CMPR = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    elsif(/y_reg.updated.*window.(\w+).*val = (\w+)/){
      printf "%-10s: C%dT%d\t\tY REG UPDATE <Y = %s> in window %s\n", $time, $spc, $thr, $2, $1;
    }
    else{
      print  "$_ - an undetected register\n" if ($debug);
    }
  }
#================================
# VERY IMPORTANT - PC extraction
# the notintlb and miss info
# is just nice to have.
# everything else is crucial.
#================================
  elsif(!$sas && /info-perm/i){
    if(/^.(\d+).info-perm\s+thread.([\dabcdef]+).\s+pc.(\w+)/i){
      $time = format_time($1, $ctime, $cycles);
      $proc = hex ($2);
      $spc  = int ($proc / 4);
      $thr  = $proc % 4 ;
      $val  = truncate_len($3);
    }
    else{
      die "See this\n$_\nsomething is wrong with the PC extraction\n";
    }

    $instr = $diag_code{$val};
    if($label{$val}){
       printf "%-10s: C%dT%d ======================================\n", $time, $spc, $thr;
       printf "%-10s: C%dT%d LABEL <%s>:\n", $time, $spc, $thr, $label{$val};
    }

    if($instr){
       my($notintlb, $imiss, $dmiss, $short_val);
       $val =~ /(\w{8})$/;
       $short_val = $1;
       if((exists $miss{I}{$spc}{$thr}{$short_val}) && ( $miss{I}{$spc}{$thr}{$short_val} == 1) && $perf){
         $imiss = 'IMISS';
         $miss{I}{$spc}{$thr}{$short_val} = 0;
       }
       else{
         $imiss = '';
       }

       if((exists $miss{D}{$spc}{$thr}{$short_val}) && ( $miss{D}{$spc}{$thr}{$short_val} == 1) && $perf){
         $dmiss = 'DMISS';
         $miss{D}{$spc}{$thr}{$short_val} = 0;
       }
       else{
         $dmiss = '';
       }

       if(exists $notintlb{$spc}{$thr}{$val} && $notintlb{$spc}{$thr}{$val} && $perf){
         $notintlb = "not in tlb";
         $notintlb{$spc}{$thr}{$val} = 0;
        print "switch off tlb message $_\n" if($debug);
       }
       else{
         $notintlb = '';
       }
       if($instr =~ /%asi/){
          my $asi_str = asi_mnem($asi_reg[$proc]); 
          $instr =~ s/%asi/%asi ($asi_reg[$proc] $asi_str)/;
       }

       printf "%-10s: C%dT%d v%-12s \t%-30s $notintlb $imiss $dmiss\n", $time, $spc, $thr,  $val, $instr;
       $instr =~ s/[,\[\]]//g;
       if($instr =~ /%fp\W|%sp\W|%fp$|%sp$/){
         $instr =~ s/%fp/%i6/g;
         $instr =~ s/%sp/%o6/g;
       }

       @instr_list = split /\s+/, $instr;
       print_regs;
    }
    else{
      printf "%-10s: C%dT%d v%-12s \tWARNING probably illegal instruction - could not translate\n", $time, $spc, $thr,  $val;
    }
  }

#====================================
# also very important - SAS only runs
#====================================
  elsif($sas && /^\((\d+)\):sas>\s+\d+:\s+\[th([\dabcdef]+)\]\s+<v:0x(\w+)>\s+<p:0*(\w+)>\s(.*)/){
    $time = format_time($1, $ctime, $cycles);
    $proc = hex ($2);
    $spc  = $proc / 4;
    $thr  = $2 % 4;
    $val  = truncate_len($3);
    my($pa) = $4;
    $instr = $5;

    if(exists $label{$val}){
      printf "%-10s: C%dT%d ======================================\n", $time, $spc, $thr;
      printf "%-10s: C%dT%d LABEL <%s>:\n", $time, $spc, $thr, $label{$val};
    }

    printf "%-10s: C%dT%d v%-12s \t%-30s \(pa=%-12s\)\n", $time, $spc, $thr,  $val, $instr, $pa;
    $instr =~ s/[,\[\]]//g;
    @instr_list = split /\s+/, $instr;
    print_regs;
  }

# example line:
#@1101: 0000.pc=00000000000400ac inst[lstore] in switch stage /wo speculation, latency=0
  elsif($mom && /^\@(\d+):\s+(\d+)\.pc=(\w+)\s+inst/){
    $time = format_time($1, $ctime, $cycles);
    my $proc  =  $2 + 0;
    $spc  = $proc / 4;
    $thr  = $proc % 4;
    $val  = truncate_len($3);

    if(exists $diag_code{$val}){
      $instr = $diag_code{$val};
    }
    else{
      $instr = "Instruction not found";
    }
    if($label{$val}){
      printf "%-10s: C%dT%d ======================================\n", $time, $spc, $thr;
      printf "%-10s: C%dT%d LABEL <%s>:\n", $time, $spc, $thr, $label{$val};
    }

    printf "%-10s: C%dT%d v%-12s \t%-30s\n", $time, $spc, $thr,  $val, $instr;
  }


#=============================
# print CCX info.
#=============================
  elsif($ccx && (/^(\d+):Info cpu.(\d). cpx.*->\s*(\w+)/)) {
    $time = format_time($1, $ctime, $cycles);
    $spc  = $2;
    my($rawpkt) = $3;

    my($pkt) = process_cpx_pkt($rawpkt);
    print "debug cpx: $_\n" if($debug);
    printf "%-10s: C${spc}T$pkt\n", $time;
    next;
  }
  elsif(/^(\d+):Info cpu.(\d). pcx.*->\s*(\w+)/) {
    $time = format_time($1, $ctime, $cycles);
    $spc= $2;
    my($rawpkt) = $3;

    my($pkt) = process_pcx_pkt($rawpkt);
    print "debug pcx: $_\n" if($debug);
    if($ccx){
      printf "%-10s: C$spc$pkt\n", $time;
    }
    if($pkt =~ /^T(\d).*([id])fill_req.*addr\s+\w*(\w{8})\s/i){
      my $thr   = $1;
      my $iord  = $2;
      my $addr  = $3;
      $miss{$iord}{$spc}{$thr}{$addr} = 1;
      print " setting $iord $spc $thr $addr miss \n" if($debug);
    }
   
    next;
  }
# l2 bank info
#==============
  elsif($l2 && /^(\d+):\s+(L2 bank.*)/) {
    $time = format_time($1, $ctime, $cycles);
    my $rawpkt = $2;
    if($rawpkt =~ /core\s+(\d+),\s+thread\s+(\d+)/){
      $spc  = $1;
      $thr  = $2;
      printf "%-10s: C${spc}T${thr}\t$rawpkt\n", $time;
    }
    else{
      printf "%-10s:     \t$rawpkt\n", $time;
    }
    next;
  }
# dram info
  elsif($dram && /^(\d+):\s*(DRAM.*)/) {
    $time = format_time($1, $ctime, $cycles);
    my $rawpkt = $2;
    printf "%-10s: $rawpkt\n", $time;
    next;
  }
  elsif($dram && /^(\d+):\s*(L2_DRAM.*)/) {
    $time = format_time($1, $ctime, $cycles);
    my $rawpkt = $2;
    printf "%-10s: $rawpkt\n", $time;
    next;
  }
  elsif(/bad/i)		{ print "$_\n"; }
} # while

close(VCS);
print "\nBye\n";

#==========================

sub     error {
   my($msg)= @_;
   STDOUT->autoflush(1);
   STDERR->autoflush(1);
   print STDERR "ERR: $msg!\n";
   exit(1);
}

#==========================
# updates the register values
# this is per thread.
# I am modeling all registers per thread as one big flat
# register file, index by register window number * N + register number
# where N = 8 for globals and 16 for others
#==========================
sub update_regs {

  my($reg_num);

  if($reg =~ /%r(\d+)/){
    if($1 < 8){ 			# global reg.
      $reg_num = 8 *$win + $1;
      $gregs[$proc][$reg_num] = $val;
      print "C${spc}T${thr} debug updating global $reg to $gregs[$proc][$1] reg num = $reg_num\n" if($debug);
    }
    else{ 				# not a global reg.
      $reg_num = $win*16 + 31 - $1;
      $regs[$proc][$reg_num] = $val;
      print "C${spc}T${thr} debug updating $reg to $regs[$proc][$reg_num] reg_num = $reg_num\n" if($debug);
    }
  }
  elsif($reg =~ /%g(\d+)/){		# global reg
    $reg_num = 8 * $win + $1;
    $gregs[$proc][$reg_num] = $val;
    print "C${spc}T${thr} debug updating $reg to $gregs[$proc][$reg_num] reg_num: $reg_num\n" if($debug);
  }
  elsif($reg =~ /%i(\d+)/){		# input reg
    $reg_num = $win*16  + $1;
    $regs[$proc][$reg_num] = $val;
    print "C${spc}T${thr} debug updating $reg to $regs[$proc][$reg_num] reg_num: $reg_num\n" if($debug);
  }
  elsif($reg =~ /%l(\d+)/){		# local reg
    $reg_num = $win*16  + 8 + $1;
    $regs[$proc][$reg_num] = $val;
    print "C${spc}T${thr} debug updating $reg to $regs[$proc][$reg_num] reg_num: $reg_num\n" if($debug);
  }
  elsif($reg =~ /%o(\d+)/){		# output reg
    $reg_num = $win*16  + 16 + $1;
    $regs[$proc][$reg_num] = $val;
    print "C${spc}T${thr} debug updating $reg to $regs[$proc][$reg_num] reg_num: $reg_num\n" if($debug);
  }
  elsif($reg =~ /%f(\d+)/){		# FP reg.
    $reg_num = $1;
    $fpregs[$proc][$reg_num] = $val;
    print "C${spc}T${thr} debug updating $reg to $fpregs[$proc][$reg_num] reg_num: $reg_num\n" if($debug);
  }
  elsif($reg =~ /%d(\d+)/){		# should not come here.
    print "%d stuff, man, don't know what to do yet.\n";
    exit 1;
  }
}

#-----------------------------------------------------------------

# prints the relevant registers for the instruction/PC which found it.
sub print_regs{

  my($needs_print) = 0;
  my($e, $reg_num);

  if($instr =~ /%(r|g|l|i|o|f|d)\d+/){
    $needs_print = 1;
    printf "            C%dT%d\t\told reg values: ", $spc, $thr;
  }
  if($needs_print){
    foreach $e (@instr_list){

      if($e =~ /%r(\d+)/){
        my $rnumh =  $1;
        if($rnumh < 8)				{ $e =~ s/%r/%g/; }
        elsif(($rnumh >= 8)  && ($rnumh < 16))	{ $e =~ s/%r/%o/; }
        elsif(($rnumh >= 16) && ($rnumh < 24))	{ $e =~ s/%r/%l/; }
        elsif(($rnumh >= 24) && ($rnumh < 32))	{ $e =~ s/%r/%i/; }
        else					{ die "something is wrong with register number $rnumh\n";}
      }

      if($e =~ /%g(\d+)/){
        $reg_num = $gl[$proc] * 8 + $1;
        printf "%s= %s ", $e, $gregs[$proc][$reg_num];
      }
      elsif($e =~ /%i(\d+)/){
        $reg_num = $cwp[$proc]*16  + $1;
        printf "%s= %s ", $e, $regs[$proc][$reg_num];
      }
      elsif($e =~ /%l(\d+)/){
        $reg_num = $cwp[$proc]*16  + 8 + $1;
        printf "%s= %s ", $e, $regs[$proc][$reg_num];
      }
      elsif($e =~ /%o(\d+)/){
        $reg_num = $cwp[$proc]*16  + 16 + $1;
        printf "%s= %s ", $e, $regs[$proc][$reg_num];
      }
      elsif($e =~ /%f(\d+)/){
        $reg_num = $1;
        printf "%s= %s ", $e, $fpregs[$proc][$reg_num];
      }
      elsif($e =~ /%d(\d+)/){
        print "%d stuff, man, don't know what to do yet.\n";
        exit 1;
      }
    }
    print "\n";
  }
}


#====================================================================
# makes sense of the PCX packet
#====================================================================
sub process_pcx_pkt{

my %ReqTyps =
  (
   '00000'  => 'Dfill_Req',
   '10000'  => 'Ifill_Req',
   '00001'  => 'ST',
   '00111'  => 'STQ(1)',
   '00010'  => 'CAS(1)',
   '00011'  => 'CAS(2)',
   '00110'  => 'SWP_Ldstb',
   '00100'  => 'Stream_loads',
   '00101'  => 'Stream_store',
   '01001'  => 'Int',
   '01010'  => 'FP(1)',
   '01011'  => 'FP(2)',
   '01100'  => 'blank',
   '01101'  => 'Fwd_req',
   '01110'  => 'Fwd_reply'
  );

  my $rawpkt = shift @_;
  my $vld 	= substr $rawpkt, 0, 1;
  my $rawtype 	= substr $rawpkt, 1, 5;
  my $nc 	= substr $rawpkt, 6, 1;
  my $cpuid 	= substr $rawpkt, 7, 3;
  my $thrid 	= substr $rawpkt, 10, 2;
  my $inv 	= substr $rawpkt, 12, 1;
  my $pf 	= substr $rawpkt, 13, 1;
  my $binit 	= substr $rawpkt, 14, 1;
  my $repl 	= substr $rawpkt, 15, 2;
  my $size 	= substr $rawpkt, 17, 3;
  my $rawaddr 	= substr $rawpkt, 20, 40;
  my $rawdata 	= substr $rawpkt, 60, 64;
 
  my $addr 	= b2h($rawaddr);
  my $data 	= b2h($rawdata);

  my $type 	= "illegal";
     $type	= $ReqTyps{$rawtype} if (defined $ReqTyps{$rawtype});

  my $reqid = 'TX';
  if   ($thrid eq '00'){ $reqid = 'T0'; }
  elsif($thrid eq '01'){ $reqid = 'T1'; }
  elsif($thrid eq '10'){ $reqid = 'T2'; }
  elsif($thrid eq '11'){ $reqid = 'T3'; }

  my $pkt = "$reqid\tPCX: $type nc $nc cpuid $cpuid thrid $thrid inv $inv pf $pf binit $binit repl $repl size $size addr $addr data $data";
  return $pkt;
}
#====================================================================
# makes sense of the CPX packet
#====================================================================
sub process_cpx_pkt{

my %RtnTyps =
  (
   '0000'   => 'Dfill',
   '0001'   => 'Ifill',
   '0010'   => 'Strm_Load',
   '0011'   => 'Evict_Inv',
   '0100'   => 'Store_Ack',
   '0101'   => 'Flush',
   '0110'   => 'Strm_Store_Ack',
   '0111'   => 'Int',
   '1000'   => 'FP',
   '1001'   => 'blank',
   '1010'   => 'Fwd_req',
   '1011'   => 'Fwd_Reply',
   '1100'   => 'Err',
  );

  my $rawpkt = shift @_;
  my $vld 	= substr $rawpkt, 0,  1;
  my $rawtype 	= substr $rawpkt, 1,  4;
  my $l2miss 	= substr $rawpkt, 5,  1;
  my $err 	= substr $rawpkt, 6,  2;
  my $nc 	= substr $rawpkt, 8,  1;
  my $shared 	= substr $rawpkt, 9,  7;
  my $thrbits	= substr $rawpkt, 9,  2;
  my $rsvd 	= substr $rawpkt, 16, 1;
  my $rawdata 	= substr $rawpkt, 17, 128;

  my $type 	= "illegal";
     $type	= $RtnTyps{$rawtype} if (defined $RtnTyps{$rawtype});
 
  my $data 	= b2h($rawdata);

  my $thread = 'x'; 
  if($thrbits eq '00'){
     $thread = '0'; 
  }
  elsif($thrbits eq '01'){
     $thread = '1'; 
  }
  elsif($thrbits eq '10'){
     $thread = '2'; 
  }
  elsif($thrbits eq '11'){
     $thread = '3'; 
  }
  

  my $pkt = "$thread\t\tCPX: $type l2miss $l2miss err $err nc $nc shared $shared rsvd $rsvd data $data";
  return $pkt;
}
#====================================================================
# binary to hex.
#====================================================================
sub b2h{

  my $in = shift @_;

  if($in =~ /x/i){ 
    return "xxxxxxxx";
  }

  my @inlist = split //, $in;

  my ($res, $i, $digit, @num, $strres);

  while (@inlist){
   $res = 0;
   $i   = shift @inlist;
   $res = 2 * $res + $i; 
   $i   = shift @inlist;
   $res = 2 * $res + $i; 
   $i   = shift @inlist;
   $res = 2 * $res + $i; 
   $i   = shift @inlist;
   $res = 2 * $res + $i; 

   $digit =  sprintf "%lx", $res;
   push @num, $digit;
  }

  $strres = join '', @num;

  return $strres;

}

#====================================================================
#truncate PC length from the MSB zeroes (or FF-s)
#====================================================================
sub truncate_len{

  my $pc = $_[0];
  my($length) = length($pc);
  my($va_length) = 12;

  if($length>$va_length){
      $pc =~ /(.{$va_length})$/;
      $pc = $1;
  }       
  elsif($pc=~ /^f/i) {
    $pc= 'f' x ($va_length-$length) . $pc;     
  }
  else {
    $pc= '0' x ($va_length-$length) . $pc;       
  }
  print "pc= $pc\n" if($debug);
  $pc;
}

#====================================================================

#====================================================================
# sorti: sorts the input file in a special way.
# very simple - the RTL messages are ordered and the SAS
# messages are ordered, so all we need is merge sorting.
# Notes:
#-------
# disambiguate lines on the same timetick. - register updates,
# and info-perm messages
#====================================================================
sub sorti{

  if($logfile =~ /\.gz$/) {
    open(VCSRAW1, "gunzip -c  $logfile | egrep 'sas|MAT|trig' | ") || die "cannot open gunzip -c $logfile";
    open(VCSRAW2, "gunzip -c  $logfile | egrep -v 'sas|MAT|trig' | ") || die "cannot open gunzip -c $logfile";
  }else{
    open(VCSRAW1, "egrep 'sas|MAT|trig' $logfile | ") || die "cannot open $logfile";
    open(VCSRAW2, "egrep -v 'sas|MAT|trig' $logfile | ") || die "cannot open $logfile";
  }

  my $curtime1 = 0;
  my $curtime2 = 0;
  my $gets1 = 1;
  my $gets2 = 1;
  my $s1line;
  my $s2line;

  while(1) {

# get the vcsraw1
#----------------
    if($gets1){
      $s1line = <VCSRAW1>;
      if(!$s1line){
        if($s2line){
          print $s2line;
        }
        while(<VCSRAW2>){
          print;
        }
        last;
      }
      else{
        if($s1line =~ /^(\d+)\s*:.*(gl|tl|pstate)_reg-M/) {
          $curtime1 = $1 + 3;
        }elsif($s1line =~ /^(\d+)\s*:.*reg-M/) {
          $curtime1 = $1 + 10;
        }elsif($s1line =~ /^(\d+)\s*:/) {
          $curtime1 = $1 + 0;
        }elsif($s1line =~ /^\((\d+)\)\s*:/) {
          $curtime1 = $1 + 0;
        }
      }
    }
 
# get the vcsraw2
#----------------
    if($gets2){
      $s2line = <VCSRAW2>;
      if(!$s2line){
        if($s1line){
          print $s1line;
        }
        while(<VCSRAW1>){
          print;
        }
        last;
      }
      else{
        if($s2line =~ /^\((\d+)\)Info-p/) {
          $curtime2 = $1 + 5;
        }elsif($s2line =~ /^(\d+)\s*:/) {
          $curtime2 = $1 + 0;
        }elsif($s2line =~ /^\((\d+)\)\s*:/) {
          $curtime2 = $1 + 0;
        }
      }
    }

    if($curtime1 < $curtime2){
      print $s1line;
      $gets2 = 0;
      $gets1 = 1;
    }
    else{
      print $s2line;
      $gets2 = 1;
      $gets1 = 0;
    }
  }

  close(VCSRAW1);
  close(VCSRAW2);

  exit;

}

#=======================================================
# print ASI mnemonics to make debugging more pleasurable.
#=======================================================
sub asi_mnem{
my %asis = (
"4", "ASI_NUCLEUS", 
"c", "ASI_NUCLEUS_LITTLE", 
"10", "ASI_AS_IF_USER_PRIMARY", 
"11", "ASI_AS_IF_USER_SECONDARY", 
"14", "ASI_REAL_MEM", 
"15", "ASI_REAL_IO", 
"16", "ASI_BLOCK_AS_IF_USER_PRIMARY", 
"17", "ASI_BLOCK_AS_IF_USER_SECONDARY", 
"18", "ASI_AS_IF_USER_PRIMARY_LITTLE", 
"19", "ASI_AS_IF_USER_SECONDARY_LITTLE", 
"1c", "ASI_REAL_MEM_LITTLE", 
"1d", "ASI_REAL_IO_LITTLE", 
"1e", "ASI_BLOCK_AS_IF_USER_P_LITTLE", 
"1f", "ASI_BLOCK_AS_IF_USER_S_LITTLE", 
"20", "ASI_SCRATCHPAD", 
"21", "ASI_MMU", 
"22", "ASI_AS_IF_USER_BLK_INIT_ST_QUAD_LDD_P", 
"23", "ASI_AS_IF_USER_BLK_INIT_ST_QUAD_LDD_S", 
"24", "ASI_QUAD_LDD", 
"25", "ASI_QUEUE", 
"26", "ASI_QUAD_LDD_REAL", 
"27", "ASI_NUCLEUS_BLK_INIT_ST_QUAD_LDD", 
"2a", "ASI_AS_IF_USER_BLK_INIT_ST_QUAD_LDD_P_LITTLE", 
"2b", "ASI_AS_IF_USER_BLK_INIT_ST_QUAD_LDD_S_LITTLE", 
"2c", "ASI_QUAD_LDD_LITTLE", 
"2e", "ASI_QUAD_LDD_REAL_LITTLE", 
"2f", "ASI_NUCLEUS_BLK_INIT_ST_QUAD_LDD_P_LITTLE", 
"30", "UNDEFINED", 
"31", "ASI_DMMU_CTXT_ZERO_TSB_BASE_PS0", 
"32", "ASI_DMMU_CTXT_ZERO_TSB_BASE_PS1", 
"33", "ASI_DMMU_CTXT_ZERO_CONFIG", 
"35", "ASI_IMMU_CTXT_ZERO_TSB_BASE_PS0", 
"36", "ASI_IMMU_CTXT_ZERO_TSB_BASE_PS1", 
"37", "ASI_IMMU_CTXT_ZERO_CONFIG", 
"38", "ASI_DTSB_TAG_TARGET", 
"39", "ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS0", 
"3a", "ASI_DMMU_CTXT_NONZERO_TSB_BASE_PS1", 
"3b", "ASI_DMMU_CTXT_NONZERO_CONFIG", 
"3d", "ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS0", 
"3e", "ASI_IMMU_CTXT_NONZERO_TSB_BASE_PS1", 
"3f", "ASI_IMMU_CTXT_NONZERO_CONFIG", 
"40", "ASI_STREAM_MA", 
"42", "ASI_SPARC_BIST_CONTROL_OR_INST_MASK_REG_OR_LSU_DIAG_REG", 
"43", "ASI_ERROR_INJECT_REG", 
"44", "ASI_STM_CTL_REG", 
"45", "ASI_LSU_CTL_REG", 
"46", "ASI_DCACHE_DATA", 
"47", "ASI_DCACHE_TAG", 
"48", "ASI_INTR_DISPATCH_STATUS_OBSOLETE", 
"49", "ASI_INTR_RECEIVE_OBSOLETE", 
"4a", "ASI_OBSOLETE", 
"4b", "ASI_SPARC_ERROR_EN_REG", 
"4c", "ASI_SPARC_ERROR_STAT_REG", 
"4d", "ASI_SPARC_ERROR_ADDR_REG", 
"4e", "ASI_ECACHE_TAG_DATA", 
"4f", "ASI_HYP_SCRATCHPAD", 
"50", "ASI_IMMU", 
"51", "ASI_IMMU_TSB_8KB_PTR_REG", 
"52", "ASI_IMMU_TSB_64KB_PTR_REG", 
"54", "ASI_ITLB_DATA_IN_REG", 
"55", "ASI_ITLB_DATA_ACCESS_REG", 
"56", "ASI_ITLB_TAG_READ_REG", 
"57", "ASI_IMMU_DEMAP", 
"58", "ASI_DMMU", 
"59", "ASI_DMMU_TSB_8KB_PTR_REG", 
"5a", "ASI_DMMU_TSB_64KB_PTR_REG", 
"5b", "ASI_DMMU_TSB_DIRECT_PTR_REG", 
"5c", "ASI_DTLB_DATA_IN_REG", 
"5d", "ASI_DTLB_DATA_ACCESS_REG", 
"5e", "ASI_DTLB_TAG_READ_REG", 
"5f", "ASI_DMMU_DEMAP", 
"60", "ASI_TLB_INVALIDATE_ALL", 
"66", "ASI_ICACHE_INSTR", 
"67", "ASI_ICACHE_TAG", 
"72", "ASI_SWVR_INTR_RECEIVE", 
"73", "ASI_SWVR_UDB_INTR_W", 
"74", "ASI_SWVR_UDB_INTR_R", 
"80", "ASI_PRIMARY", 
"81", "ASI_SECONDARY", 
"82", "ASI_PRIMARY_NO_FAULT", 
"83", "ASI_SECONDARY_NO_FAULT", 
"88", "ASI_PRIMARY_LITTLE", 
"89", "ASI_SECONDARY_LITTLE",
"8a", "ASI_PRIMARY_NOFAULT_LITTLE", 
"8b", "ASI_SECONDARY_NOFAULT_LITTLE",
"e2", "ASI_BLK_INIT_ST_QUAD_LDD_P", 
"e3", "ASI_BLK_INIT_ST_QUAD_LDD_S",
"ea", "ASI_BLK_INIT_ST_QUAD_LDD_P_LITTLE", 
"eb", "ASI_BLK_INIT_ST_QUAD_LDD_S_LITTLE",
"f0", "ASI_BLK_P", 
"f1", "ASI_BLK_S",
"f8", "ASI_BLK_P_LITTLE", 
"f9", "ASI_BLK_S_LITTLE"
);

my $mykey = $_[0];

if(exists  $asis{$mykey}){
  return $asis{$mykey};
}
else {
  return "";
}

}
#============================================

# print cycles or timeticks.
#============================================
sub format_time
{
  my $time   = $_[0];
  my $ctime  = $_[1];
  my $cycles = $_[2];

  if($cycles){
    if($ctime){
      $time = int ($time /$ctime);
      $time = 'c' . $time;
    }
    else { die "something is wrong with ctime\n" }
  }
  $time;
}

#============================================