]> git.xonotic.org Git - xonotic/xonotic.git/blobdiff - misc/tools/progs-analyzer.pl
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[xonotic/xonotic.git] / misc / tools / progs-analyzer.pl
old mode 100644 (file)
new mode 100755 (executable)
index 282b6c1..d0df1c4
@@ -1,3 +1,5 @@
+#!/usr/bin/perl
+
 use strict;
 use warnings;
 use Digest::SHA;
@@ -125,6 +127,10 @@ sub checkop($)
        {
                return { a => 'inglobal', b => 'inglobalfunc' };
        }
+       if($op =~ /^INVALID#/)
+       {
+               return { isinvalid => 1 };
+       }
        return { a => 'inglobal', b => 'inglobal', c => 'outglobal' };
 }
 
@@ -673,6 +679,10 @@ sub find_uninitialized_locals($$)
                                }
                        }
 
+                       if($c->{isinvalid})
+                       {
+                               ++$warned{$ip}{''}{"Invalid opcode"};
+                       }
                        for(qw(a b c))
                        {
                                my $type = $c->{$_};
@@ -898,7 +908,7 @@ sub detect_constants($)
        use constant GLOBALFLAG_U => 64; # unused
        use constant GLOBALFLAG_P => 128; # possibly parameter passing
        use constant GLOBALFLAG_D => 256; # has a def
-       my @globalflags = (GLOBALFLAG_Q | GLOBALFLAG_U) x @{$progs->{globals}};
+       my @globalflags = (GLOBALFLAG_Q | GLOBALFLAG_U) x (@{$progs->{globals}} + 2);
 
        for(@{$progs->{functions}})
        {
@@ -1181,7 +1191,7 @@ sub parse_progs($)
                die "Out of range name in globaldef $_"
                        if $g->{s_name} < 0 || $g->{s_name} >= length $p{strings};
                my $name = $p{getstring}->($g->{s_name});
-               die "Out of range ofs in globaldef $_ (name: \"$name\")"
+               die "Out of range ofs $g->{ofs} in globaldef $_ (name: \"$name\")"
                        if $g->{ofs} >= $p{globals};
        }
 
@@ -1195,7 +1205,7 @@ sub parse_progs($)
                die "Out of range name in fielddef $_"
                        if $g->{s_name} < 0 || $g->{s_name} >= length $p{strings};
                my $name = $p{getstring}->($g->{s_name});
-               die "Out of range ofs in globaldef $_ (name: \"$name\")"
+               die "Out of range ofs $g->{ofs} in fielddef $_ (name: \"$name\")"
                        if $g->{ofs} >= $p{header}{entityfields};
        }
 
@@ -1217,12 +1227,12 @@ sub parse_progs($)
                my $file = $p{getstring}->($f->{s_file});
                die "Out of range first_statement in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
                        if $f->{first_statement} >= @{$p{statements}};
-               die "Out of range parm_start in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
-                       if $f->{parm_start} < 0 || $f->{parm_start} >= @{$p{globals}};
-               die "Out of range locals in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
-                       if $f->{locals} < 0 || $f->{parm_start} + $f->{locals} >= @{$p{globals}};
                if($f->{first_statement} >= 0)
                {
+                       die "Out of range parm_start in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
+                               if $f->{parm_start} < 0 || $f->{parm_start} >= @{$p{globals}};
+                       die "Out of range locals in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
+                               if $f->{locals} < 0 || $f->{parm_start} + $f->{locals} > @{$p{globals}};
                        die "Out of range numparms $f->{numparms} in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
                                if $f->{numparms} < 0 || $f->{numparms} > 8;
                        my $totalparms = 0;
@@ -1233,7 +1243,9 @@ sub parse_progs($)
                                $totalparms += $f->{parm_size}[$_];
                        }
                        die "Out of range parms in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
-                               if $f->{locals} < 0 || $f->{parm_start} + $totalparms >= @{$p{globals}};
+                               if $f->{parm_start} + $totalparms > @{$p{globals}};
+                       die "More parms than locals in function $_ (name: \"$name\", file: \"$file\", first statement: $f->{first_statement})"
+                               if $totalparms > $f->{locals};
                }
        }
 
@@ -1258,8 +1270,18 @@ sub parse_progs($)
                        elsif($type eq 'inglobalvec')
                        {
                                $s->{$_} &= 0xFFFF;
-                               die "Out of range global offset in statement $ip - cannot continue"
-                                       if $s->{$_} >= @{$p{globals}}-2;
+                               if($c->{isreturn})
+                               {
+                                       die "Out of range global offset in statement $ip - cannot continue"
+                                               if $s->{$_} >= @{$p{globals}};
+                                       print "Potentially out of range global offset in statement $ip - may crash engines"
+                                               if $s->{$_} >= @{$p{globals}}-2;
+                               }
+                               else
+                               {
+                                       die "Out of range global offset in statement $ip - cannot continue"
+                                               if $s->{$_} >= @{$p{globals}}-2;
+                               }
                        }
                        elsif($type eq 'outglobal')
                        {