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Fix symbol overcounting, add partial symbols

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This commit is contained in:
Phlosioneer 2019-03-03 15:02:26 -05:00
parent d0f665fddc
commit f378a5a316
1 changed files with 50 additions and 7 deletions
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57
.travis/calcrom/calcrom.pl
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@ -31,28 +31,66 @@ while (my $line = <$file>)
}
}
# It sucks that we have to objdump twice, but I can't figure out how to get
# stdin working for subcommands in perl while still having a timeout.
# Note that the grep filters out all branch labels. It also requires a minimum
# line length of 5, to filter out a ton of generated symbols (like AcCn). No
# settings to nm seem to remove these symbols. Finally, nm prints out a separate
# entry for whenever a name appears in a file, not just where it's defined. uniq
# removes all the duplicate entries.
#
#
# You'd expect this to take a while, because of uniq. It runs in under a second,
# though. Uniq is pretty fast!
my $base_cmd = "nm pokeemerald.elf | awk '{print \$3}' | grep '^[^_].\\{4\\}' | uniq";
# This looks for Unknown_, Unknown_, or sub_, followed by just numbers. Note that
# it matches even if stuff precedes the unknown, like sUnknown/gUnknown.
my $undoc_cmd = "grep '[Uu]nknown_[0-9a-fA-F]*\\|sub_[0-9a-fA-F]*'";
# This looks for every symbol with an address at the end of it. Some things are
# given a name based on their type / location, but still have an unknown purpose.
# For example, FooMap_EventScript_FFFFFFF.
my $partial_doc_cmd = "grep '[0-9a-fA-F]\\{6,7\\}'";
my $count_cmd = "wc -l";
# It sucks that we have to run this three times, but I can't figure out how to get
# stdin working for subcommands in perl while still having a timeout. It's decently
# fast anyway.
my $total_syms_as_string;
(run (
command => "arm-none-eabi-nm pokeemerald.elf | wc -l",
command => "$base_cmd | $count_cmd",
buffer => \$total_syms_as_string,
timeout => 30
timeout => 60
))
or die "ERROR: Error while getting all symbols: $?";
my $undocumented_as_string;
(run (
command => "arm-none-eabi-nm pokeemerald.elf | grep \"Unknown_\\|sub_\" | wc -l",
command => "$base_cmd | $undoc_cmd | $count_cmd",
buffer => \$undocumented_as_string,
timeout => 30
timeout => 60
))
or die "ERROR: Error while filtering for undocumented symbols: $?";
my $partial_documented_as_string;
(run (
command => "$base_cmd | $partial_doc_cmd | $count_cmd",
buffer => \$partial_documented_as_string,
timeout => 60
))
or die "ERROR: Error while filtering for partial symbols: $?";
# Performing addition on a string converts it to a number. Any string that fails
# to convert to a number becomes 0. So if our converted number is 0, but our string
# is nonzero, then the conversion was an error.
my $undocumented = $undocumented_as_string + 0;
(($undocumented != 0) and ($undocumented_as_string ne "0"))
or die "ERROR: Cannot convert string to num: '$undocumented_as_string'";
my $partial_documented = $partial_documented_as_string + 0;
(($partial_documented != 0) and ($partial_documented_as_string ne "0"))
or die "ERROR: Cannot convert string to num: '$partial_documented_as_string'";
my $total_syms = $total_syms_as_string + 0;
(($total_syms != 0) and ($total_syms_as_string ne "0"))
or die "ERROR: Cannot convert string to num: '$total_syms_as_string'";
@ -64,8 +102,12 @@ my $total = $src + $asm;
my $srcPct = sprintf("%.4f", 100 * $src / $total);
my $asmPct = sprintf("%.4f", 100 * $asm / $total);
my $documented = $total_syms - $undocumented;
# partial_documented is double-counting the unknown_* and sub_* symbols.
$partial_documented = $partial_documented - $undocumented;
my $documented = $total_syms - ($undocumented + $partial_documented);
my $docPct = sprintf("%.4f", 100 * $documented / $total_syms);
my $partialPct = sprintf("%.4f", 100 * $partial_documented / $total_syms);
my $undocPct = sprintf("%.4f", 100 * $undocumented / $total_syms);
print "$total total bytes of code\n";
@ -74,4 +116,5 @@ print "$asm bytes of code in asm ($asmPct%)\n";
print "\n";
print "$total_syms total symbols\n";
print "$documented symbols documented ($docPct%)\n";
print "$partial_documented symbols partially documented ($partialPct%)\n";
print "$undocumented symbols undocumented ($undocPct%)\n";