source: parabix-LLVM/llvm_git/utils/test_debuginfo.pl @ 4136

Last change on this file since 4136 was 4078, checked in by linmengl, 5 years ago

checkin llvm-meng source

  • Property svn:executable set to *
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[4078]1#!/usr/bin/perl
2#
3# This script tests debugging information generated by a compiler.
4# Input arguments
5#   - Input source program. Usually this source file is decorated using
6#     special comments to communicate debugger commands.
7#   - Executable file. This file is generated by the compiler.
8#
9# This perl script extracts debugger commands from input source program
10# comments in a script. A debugger is used to load the executable file
11# and run the script generated from source program comments. Finally,
12# the debugger output is checked, using FileCheck, to validate
13# debugging information.
14#
15# On Darwin the default is to use the llgdb.py wrapper script which
16# translates gdb commands into their lldb equivalents.
17
18use File::Basename;
19use Config;
20use Cwd;
21
22my $testcase_file = $ARGV[0];
23my $executable_file = $ARGV[1];
24
25my $input_filename = basename $testcase_file;
26my $output_dir = dirname $executable_file;
27
28my $debugger_script_file = "$output_dir/$input_filename.debugger.script";
29my $output_file = "$output_dir/$input_filename.gdb.output";
30
31my %cmd_map = ();
32# Assume lldb to be the debugger on Darwin.
33my $use_lldb = 0;
34$use_lldb = 1 if ($Config{osname} eq "darwin");
35
36# Extract debugger commands from testcase. They are marked with DEBUGGER:
37# at the beginning of a comment line.
38open(INPUT, $testcase_file);
39open(OUTPUT, ">$debugger_script_file");
40while(<INPUT>) {
41    my($line) = $_;
42    $i = index($line, "DEBUGGER:");
43    if ( $i >= 0) {
44        $l = length("DEBUGGER:");
45        $s = substr($line, $i + $l);
46        print OUTPUT  "$s";
47    }
48}
49print OUTPUT "\n";
50print OUTPUT "quit\n";
51close(INPUT);
52close(OUTPUT);
53
54# setup debugger and debugger options to run a script.
55my $my_debugger = $ENV{'DEBUGGER'};
56if (!$my_debugger) {
57    if ($use_lldb) {
58        my $path = dirname(Cwd::abs_path($0));
59        $my_debugger = "/usr/bin/env python $path/../tools/clang/test/debuginfo-tests/llgdb.py";
60    } else {
61        $my_debugger = "gdb";
62    }
63}
64
65# quiet / exit after cmdline / no init file / execute script
66my $debugger_options = "-q -batch -n -x";
67
68# run debugger and capture output.
69system("$my_debugger $debugger_options $debugger_script_file $executable_file > $output_file 2>&1");
70
71# validate output.
72system("FileCheck", "-input-file", "$output_file", "$testcase_file");
73if ($?>>8 == 1) {
74    print "Debugger output was:\n";
75    system("cat", "$output_file");
76    exit 1;
77}
78else {
79    exit 0;
80}
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