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#!/usr/bin/perl
sub error {
print STDERR ("Error: @_\n");
exit(1);
}
sub warning {
print STDERR ("Warning: @_\n");
}
# string (filename.map)
# return hash(string:hash(string:number))
sub read_map {
open(MAP_FILE,$_[0]) || error("Couldn't open a map $_[0]");
my %retval;
while (<MAP_FILE>) {
chomp;
my @parts = split(/[[:space:]]+/);
if (@parts != 5) {
next;
}
if ($parts[1] =~ m/\.(text|data|rodata|bss|icode|idata|irodata|ibss)/) {
my $region = $parts[1];
my $number = $parts[2];
@parts = split(/\//,$parts[4]);
@parts = split(/[\(\)]/,$parts[$#parts]);
my $library = $retval{$parts[0]};
my %library = %$library;
my $object = $parts[$#parts];
$library{$object . $region} = $number;
$retval{$parts[0]} = \%library;
}
}
close(MAP_FILE);
return %retval;
}
# string (filename.(a|o|elf)), hash(number:string), string(objdump_tool)
# return hash(number:string)
sub read_library {
open(OBJECT_FILE,"$_[2] -t $_[0] |") ||
error("Couldn't pipe objdump for $_[0]\nCommand was: $_[2] -t $_[0]");
my $library = $_[1];
my %library = %$library;
my %retval;
my $object;
while (<OBJECT_FILE>) {
chomp;
my @parts = split(/[[:space:]]+/);
if ($parts[0] =~ m/:$/) {
$object = $parts[0];
$object =~ s/:$//;
next;
}
if (@parts != 6) {
next;
}
if ($parts[0] eq "") {
next;
}
if ($parts[3] eq $parts[5]) {
next;
}
if ($parts[3] =~ m/\.(text|data|rodata|bss|icode|idata|irodata|ibss|iram)/) {
my $region = $parts[3];
my $symbolOffset = hex("0x" . $parts[0]);
my $sectionOffset = hex($library{$object . $region});
my $location = $symbolOffset + $sectionOffset;
$retval{$location} = $parts[5] . "(" . $object . ")";
}
}
close(OBJECT_FILE);
return %retval;
}
# string (0xFFFFFFFF), hash(number:string)
# return string
sub get_name {
my $location = hex($_[0]);
my $offsets = $_[1];
my %offsets = %$offsets;
if (exists $offsets{$location}) {
return $offsets{$location};
} else {
my $retval = $_[0];
$retval =~ y/[A-Z]/[a-z]/;
warning("No symbol found for $retval");
return $retval;
}
}
# string (filename), hash(number:string)
# return array(array(number,number,string))
sub create_list {
open(PROFILE_FILE,$_[0]) ||
error("Could not open profile file: $profile_file");
my $offsets = $_[1];
my $started = 0;
my %pfds;
while (<PROFILE_FILE>) {
if ($started == 0) {
if (m/^0x/) {
$started = 1;
} else {
next;
}
}
my @parts = split(/[[:space:]]+/);
if ($parts[0] =~ m/^0x/) {
my $callName = get_name($parts[0],$offsets);
my $calls = $parts[1];
my $ticks = $parts[2];
my @pfd = ($calls,$ticks,$callName);
if (exists $pfds{$callName}) {
my $old_pfd = $pfds{$callName};
$pfd[0]+=@$old_pfd[0];
$pfd[1]+=@$old_pfd[1];
}
$pfds{$callName} = \@pfd;
} else {
last;
}
}
close(PROFILE_FILE);
# print("FUNCTIONS\tTOTAL_CALLS\tTOTAL_TICKS\n");
# printf(" %4d\t %8d\t %8d\n",$pfds,$totalCalls,$totalTicks);
return values(%pfds);
}
# array(array(number,number,string)), number (sort element)
sub print_sorted {
my $pfds = $_[0];
my @pfds = @$pfds;
my $sort_index = $_[1];
my $percent = $_[2];
my %elements;
my $totalCalls = 0;
my $totalTicks = 0;
$pfds = 0;
# we use a key sort, which means numerical fields need to be
# numerically sortable by an alphanumeric sort - we can simply
# do this by giving the numeric keys trailing zeros. Note that
# simple string concatenation (what this used to do) would not do this
foreach $element(@pfds) {
$ne = $element;
@$ne[0] = sprintf( "%08d", @$element[0]);
@$ne[1] = sprintf( "%08d", @$element[1]);
$elements{@$ne[$sort_index] . @$element[2]} = $element;
$pfds++;
$totalCalls += @$element[0];
$totalTicks += @$element[1];
}
my @keys = sort(keys(%elements));
print("FUNCTIONS\tTOTAL_CALLS\tTOTAL_TICKS\n");
printf(" %4d\t %8d\t %8d\n",$pfds,$totalCalls,$totalTicks);
foreach $key(@keys) {
my $element = $elements{$key};
if ($percent) {
printf("Calls: %7.2f%% Ticks: %7.2f%% Symbol: %s\n",
@$element[0]/$totalCalls*100,
@$element[1]/$totalTicks*100,
@$element[2]);
} else {
printf("Calls: %08d Ticks: %08d Symbol: %s\n",
@$element);
}
}
}
# merges two hashes
sub merge_hashes {
my $hash1 = $_[0];
my $hash2 = $_[1];
return (%$hash1,%$hash2);
}
sub usage {
if (@_) {
print STDERR ("Error: @_\n");
}
print STDERR ("USAGE:\n");
print STDERR ("$0 profile.out objdump_tool map obj[...] [map obj[...]...] sort[...]\n");
print STDERR
("\tprofile.out output from the profiler, extension is .out\n");
print STDERR
("\tobjdump_tool name of objdump executable for this platform\n");
print STDERR
("\t e.g. arm-elf-objdump\n");
print STDERR
("\tmap map file, extension is .map\n");
print STDERR
("\tobj library or object file, extension is .a or .o or .elf\n");
print STDERR
("\tformat 0-2[_p] 0: by calls, 1: by ticks, 2: by name\n");
print STDERR
("\t _p shows percents instead of counts\n");
print STDERR ("NOTES:\n");
print STDERR
("\tmaps and objects come in sets, one map then many objects\n");
exit(1);
}
if ($ARGV[0] =~ m/-(h|help|-help)/) {
usage();
}
if (@ARGV < 3) {
usage("Requires at least 3 arguments");
}
if ($ARGV[0] !~ m/\.out$/) {
usage("Profile file must end in .out");
}
my $i = 2;
my %symbols;
{
my %map;
for (; $i < @ARGV; $i++) {
my $file = $ARGV[$i];
if ($file =~ m/\.map$/) {
%map = read_map($file);
} elsif ($file =~ m/\.(a|o|elf)$/) {
if (!%map) {
usage("No map file found before first object file");
}
my @parts = split(/\//,$file);
my %new_symbols = read_library($file,$map{$parts[$#parts]},$ARGV[1]);
%symbols = merge_hashes(\%symbols,\%new_symbols);
} else {
last;
}
}
}
if (!%symbols) {
warning("No symbols found");
}
if ($i >= @ARGV) {
error("You forgot to specify any sort ordering on output (e.g. 0, 1_p, 2)");
}
my @pfds = create_list($ARGV[0],\%symbols);
for (; $i < @ARGV; $i++) {
print_sorted(\@pfds,split("_",$ARGV[$i]));
}
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