Devang Patel | c7183ba | 2010-09-13 20:42:15 +0000 | [diff] [blame] | 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 | use File::Basename; |
| 16 | |
| 17 | my $testcase_file = $ARGV[0]; |
| 18 | my $executable_file = $ARGV[1]; |
| 19 | |
| 20 | my $input_filename = basename $testcase_file; |
| 21 | my $output_dir = dirname $executable_file; |
| 22 | |
Devang Patel | 12b0179 | 2010-09-13 21:23:17 +0000 | [diff] [blame] | 23 | my $debugger_script_file = "$output_dir/$input_filename.debugger.script"; |
Devang Patel | c7183ba | 2010-09-13 20:42:15 +0000 | [diff] [blame] | 24 | my $output_file = "$output_dir/$input_filename.gdb.output"; |
| 25 | |
| 26 | # Extract debugger commands from testcase. They are marked with DEBUGGER: |
| 27 | # at the beginnign of a comment line. |
| 28 | open(INPUT, $testcase_file); |
| 29 | open(OUTPUT, ">$debugger_script_file"); |
| 30 | while(<INPUT>) { |
| 31 | my($line) = $_; |
| 32 | $i = index($line, "DEBUGGER:"); |
| 33 | if ( $i >= 0) { |
| 34 | $l = length("DEBUGGER:"); |
| 35 | $s = substr($line, $i + $l); |
| 36 | print OUTPUT "$s"; |
| 37 | } |
| 38 | } |
| 39 | print OUTPUT "\n"; |
| 40 | print OUTPUT "quit\n"; |
| 41 | close(INPUT); |
| 42 | close(OUTPUT); |
| 43 | |
| 44 | # setup debugger and debugger options to run a script. |
| 45 | my $my_debugger = $ENV{'DEBUGGER'}; |
| 46 | if (!$my_debugger) { |
| 47 | $my_debugger = "gdb"; |
| 48 | } |
| 49 | my $debugger_options = "-q -batch -n -x"; |
| 50 | |
| 51 | # run debugger and capture output. |
| 52 | system("$my_debugger $debugger_options $debugger_script_file $executable_file >& $output_file"); |
| 53 | |
| 54 | # validate output. |
| 55 | system("FileCheck", "-input-file", "$output_file", "$testcase_file"); |
| 56 | if ($?>>8 == 1) { |
| 57 | exit 1; |
| 58 | } |
| 59 | else { |
| 60 | exit 0; |
| 61 | } |