forked from OSchip/llvm-project
82 lines
2.4 KiB
Perl
Executable File
82 lines
2.4 KiB
Perl
Executable File
#!/usr/bin/perl
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#
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# This script tests debugging information generated by a compiler.
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# Input arguments
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# - Input source program. Usually this source file is decorated using
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# special comments to communicate debugger commands.
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# - Executable file. This file is generated by the compiler.
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#
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# This perl script extracts debugger commands from input source program
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# comments in a script. A debugger is used to load the executable file
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# and run the script generated from source program comments. Finally,
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# the debugger output is checked, using FileCheck, to validate
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# debugging information.
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#
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# On Darwin the default is to use the llgdb.py wrapper script which
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# translates gdb commands into their lldb equivalents.
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use File::Basename;
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use Config;
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use Cwd;
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my $testcase_file = $ARGV[0];
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my $executable_file = $ARGV[1];
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my $input_filename = basename $testcase_file;
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my $output_dir = dirname $executable_file;
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my $debugger_script_file = "$output_dir/$input_filename.debugger.script";
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my $output_file = "$output_dir/$input_filename.gdb.output";
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my %cmd_map = ();
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# Assume lldb to be the debugger on Darwin.
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my $use_lldb = 0;
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$use_lldb = 1 if ($Config{osname} eq "darwin");
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# Extract debugger commands from testcase. They are marked with DEBUGGER:
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# at the beginning of a comment line.
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open(INPUT, $testcase_file);
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open(OUTPUT, ">$debugger_script_file");
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while(<INPUT>) {
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my($line) = $_;
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$i = index($line, "DEBUGGER:");
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if ( $i >= 0) {
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$l = length("DEBUGGER:");
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$s = substr($line, $i + $l);
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print OUTPUT "$s";
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}
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}
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print OUTPUT "\n";
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print OUTPUT "quit\n";
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close(INPUT);
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close(OUTPUT);
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# setup debugger and debugger options to run a script.
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my $my_debugger = $ENV{'DEBUGGER'};
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if (!$my_debugger) {
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if ($use_lldb) {
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my $path = dirname(Cwd::abs_path($0));
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# At least on darwin, LLDB needs te system python.
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$my_debugger = "/usr/bin/python $path/llgdb.py";
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} else {
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$my_debugger = "gdb";
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}
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}
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# quiet / exit after cmdline / no init file / execute script
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my $debugger_options = "-q -batch -n -x";
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# run debugger and capture output.
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system("$my_debugger $debugger_options $debugger_script_file $executable_file > $output_file 2>&1");
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# validate output.
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system("FileCheck", "-input-file", "$output_file", "$testcase_file");
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if ($?>>8 == 1) {
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print "Debugger output was:\n";
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system("cat", "$output_file");
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exit 1;
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}
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else {
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exit 0;
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}
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