mirror of
https://github.com/Swiftgram/Telegram-iOS.git
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3662 lines
82 KiB
Perl
Executable File
3662 lines
82 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# Copyright (c) International Business Machines Corp., 2002,2012
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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#
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# geninfo
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#
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# This script generates .info files from data files as created by code
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# instrumented with gcc's built-in profiling mechanism. Call it with
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# --help and refer to the geninfo man page to get information on usage
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# and available options.
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#
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#
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# Authors:
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# 2002-08-23 created by Peter Oberparleiter <Peter.Oberparleiter@de.ibm.com>
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# IBM Lab Boeblingen
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# based on code by Manoj Iyer <manjo@mail.utexas.edu> and
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# Megan Bock <mbock@us.ibm.com>
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# IBM Austin
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# 2002-09-05 / Peter Oberparleiter: implemented option that allows file list
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# 2003-04-16 / Peter Oberparleiter: modified read_gcov so that it can also
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# parse the new gcov format which is to be introduced in gcc 3.3
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# 2003-04-30 / Peter Oberparleiter: made info write to STDERR, not STDOUT
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# 2003-07-03 / Peter Oberparleiter: added line checksum support, added
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# --no-checksum
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# 2003-09-18 / Nigel Hinds: capture branch coverage data from GCOV
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# 2003-12-11 / Laurent Deniel: added --follow option
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# workaround gcov (<= 3.2.x) bug with empty .da files
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# 2004-01-03 / Laurent Deniel: Ignore empty .bb files
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# 2004-02-16 / Andreas Krebbel: Added support for .gcno/.gcda files and
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# gcov versioning
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# 2004-08-09 / Peter Oberparleiter: added configuration file support
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# 2008-07-14 / Tom Zoerner: added --function-coverage command line option
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# 2008-08-13 / Peter Oberparleiter: modified function coverage
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# implementation (now enabled per default)
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#
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use strict;
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use File::Basename;
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use File::Spec::Functions qw /abs2rel catdir file_name_is_absolute splitdir
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splitpath catpath/;
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use Getopt::Long;
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use Digest::MD5 qw(md5_base64);
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if( $^O eq "msys" )
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{
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require File::Spec::Win32;
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}
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# Constants
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our $lcov_version = 'LCOV version 1.10';
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our $lcov_url = "http://ltp.sourceforge.net/coverage/lcov.php";
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our $gcov_tool = "gcov";
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our $tool_name = basename($0);
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our $GCOV_VERSION_4_7_0 = 0x40700;
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our $GCOV_VERSION_3_4_0 = 0x30400;
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our $GCOV_VERSION_3_3_0 = 0x30300;
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our $GCNO_FUNCTION_TAG = 0x01000000;
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our $GCNO_LINES_TAG = 0x01450000;
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our $GCNO_FILE_MAGIC = 0x67636e6f;
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our $BBG_FILE_MAGIC = 0x67626267;
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# Error classes which users may specify to ignore during processing
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our $ERROR_GCOV = 0;
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our $ERROR_SOURCE = 1;
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our $ERROR_GRAPH = 2;
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our %ERROR_ID = (
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"gcov" => $ERROR_GCOV,
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"source" => $ERROR_SOURCE,
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"graph" => $ERROR_GRAPH,
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);
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our $EXCL_START = "LCOV_EXCL_START";
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our $EXCL_STOP = "LCOV_EXCL_STOP";
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our $EXCL_LINE = "LCOV_EXCL_LINE";
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# Compatibility mode values
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our $COMPAT_VALUE_OFF = 0;
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our $COMPAT_VALUE_ON = 1;
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our $COMPAT_VALUE_AUTO = 2;
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# Compatibility mode value names
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our %COMPAT_NAME_TO_VALUE = (
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"off" => $COMPAT_VALUE_OFF,
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"on" => $COMPAT_VALUE_ON,
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"auto" => $COMPAT_VALUE_AUTO,
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);
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# Compatiblity modes
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our $COMPAT_MODE_LIBTOOL = 1 << 0;
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our $COMPAT_MODE_HAMMER = 1 << 1;
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our $COMPAT_MODE_SPLIT_CRC = 1 << 2;
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# Compatibility mode names
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our %COMPAT_NAME_TO_MODE = (
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"libtool" => $COMPAT_MODE_LIBTOOL,
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"hammer" => $COMPAT_MODE_HAMMER,
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"split_crc" => $COMPAT_MODE_SPLIT_CRC,
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"android_4_4_0" => $COMPAT_MODE_SPLIT_CRC,
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);
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# Map modes to names
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our %COMPAT_MODE_TO_NAME = (
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$COMPAT_MODE_LIBTOOL => "libtool",
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$COMPAT_MODE_HAMMER => "hammer",
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$COMPAT_MODE_SPLIT_CRC => "split_crc",
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);
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# Compatibility mode default values
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our %COMPAT_MODE_DEFAULTS = (
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$COMPAT_MODE_LIBTOOL => $COMPAT_VALUE_ON,
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$COMPAT_MODE_HAMMER => $COMPAT_VALUE_AUTO,
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$COMPAT_MODE_SPLIT_CRC => $COMPAT_VALUE_AUTO,
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);
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# Compatibility mode auto-detection routines
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sub compat_hammer_autodetect();
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our %COMPAT_MODE_AUTO = (
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$COMPAT_MODE_HAMMER => \&compat_hammer_autodetect,
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$COMPAT_MODE_SPLIT_CRC => 1, # will be done later
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);
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our $BR_LINE = 0;
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our $BR_BLOCK = 1;
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our $BR_BRANCH = 2;
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our $BR_TAKEN = 3;
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our $BR_VEC_ENTRIES = 4;
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our $BR_VEC_WIDTH = 32;
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our $UNNAMED_BLOCK = 9999;
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# Prototypes
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sub print_usage(*);
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sub gen_info($);
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sub process_dafile($$);
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sub match_filename($@);
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sub solve_ambiguous_match($$$);
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sub split_filename($);
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sub solve_relative_path($$);
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sub read_gcov_header($);
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sub read_gcov_file($);
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sub info(@);
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sub get_gcov_version();
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sub system_no_output($@);
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sub read_config($);
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sub apply_config($);
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sub get_exclusion_data($);
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sub apply_exclusion_data($$);
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sub process_graphfile($$);
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sub filter_fn_name($);
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sub warn_handler($);
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sub die_handler($);
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sub graph_error($$);
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sub graph_expect($);
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sub graph_read(*$;$$);
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sub graph_skip(*$;$);
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sub sort_uniq(@);
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sub sort_uniq_lex(@);
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sub graph_cleanup($);
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sub graph_find_base($);
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sub graph_from_bb($$$);
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sub graph_add_order($$$);
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sub read_bb_word(*;$);
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sub read_bb_value(*;$);
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sub read_bb_string(*$);
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sub read_bb($);
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sub read_bbg_word(*;$);
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sub read_bbg_value(*;$);
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sub read_bbg_string(*);
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sub read_bbg_lines_record(*$$$$$);
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sub read_bbg($);
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sub read_gcno_word(*;$$);
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sub read_gcno_value(*$;$$);
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sub read_gcno_string(*$);
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sub read_gcno_lines_record(*$$$$$$);
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sub determine_gcno_split_crc($$$);
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sub read_gcno_function_record(*$$$$);
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sub read_gcno($);
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sub get_gcov_capabilities();
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sub get_overall_line($$$$);
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sub print_overall_rate($$$$$$$$$);
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sub br_gvec_len($);
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sub br_gvec_get($$);
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sub debug($);
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sub int_handler();
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sub parse_ignore_errors(@);
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sub is_external($);
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sub compat_name($);
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sub parse_compat_modes($);
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sub is_compat($);
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sub is_compat_auto($);
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# Global variables
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our $gcov_version;
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our $gcov_version_string;
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our $graph_file_extension;
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our $data_file_extension;
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our @data_directory;
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our $test_name = "";
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our $quiet;
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our $help;
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our $output_filename;
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our $base_directory;
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our $version;
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our $follow;
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our $checksum;
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our $no_checksum;
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our $opt_compat_libtool;
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our $opt_no_compat_libtool;
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our $rc_adjust_src_path;# Regexp specifying parts to remove from source path
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our $adjust_src_pattern;
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our $adjust_src_replace;
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our $adjust_testname;
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our $config; # Configuration file contents
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our @ignore_errors; # List of errors to ignore (parameter)
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our @ignore; # List of errors to ignore (array)
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our $initial;
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our $no_recursion = 0;
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our $maxdepth;
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our $no_markers = 0;
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our $opt_derive_func_data = 0;
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our $opt_external = 1;
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our $opt_no_external;
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our $debug = 0;
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our $gcov_caps;
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our @gcov_options;
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our @internal_dirs;
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our $opt_config_file;
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our $opt_gcov_all_blocks = 1;
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our $opt_compat;
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our %opt_rc;
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our %compat_value;
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our $gcno_split_crc;
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our $func_coverage = 1;
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our $br_coverage = 0;
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our $rc_auto_base = 1;
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our $cwd = `pwd`;
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chomp($cwd);
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#
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# Code entry point
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#
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# Register handler routine to be called when interrupted
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$SIG{"INT"} = \&int_handler;
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$SIG{__WARN__} = \&warn_handler;
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$SIG{__DIE__} = \&die_handler;
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# Prettify version string
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$lcov_version =~ s/\$\s*Revision\s*:?\s*(\S+)\s*\$/$1/;
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# Set LANG so that gcov output will be in a unified format
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$ENV{"LANG"} = "C";
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# Check command line for a configuration file name
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Getopt::Long::Configure("pass_through", "no_auto_abbrev");
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GetOptions("config-file=s" => \$opt_config_file,
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"rc=s%" => \%opt_rc);
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Getopt::Long::Configure("default");
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# Read configuration file if available
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if (defined($opt_config_file)) {
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$config = read_config($opt_config_file);
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} elsif (defined($ENV{"HOME"}) && (-r $ENV{"HOME"}."/.lcovrc"))
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{
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$config = read_config($ENV{"HOME"}."/.lcovrc");
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}
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elsif (-r "/etc/lcovrc")
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{
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$config = read_config("/etc/lcovrc");
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}
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if ($config || %opt_rc)
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{
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# Copy configuration file and --rc values to variables
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apply_config({
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"geninfo_gcov_tool" => \$gcov_tool,
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"geninfo_adjust_testname" => \$adjust_testname,
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"geninfo_checksum" => \$checksum,
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"geninfo_no_checksum" => \$no_checksum, # deprecated
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"geninfo_compat_libtool" => \$opt_compat_libtool,
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"geninfo_external" => \$opt_external,
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"geninfo_gcov_all_blocks" => \$opt_gcov_all_blocks,
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"geninfo_compat" => \$opt_compat,
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"geninfo_adjust_src_path" => \$rc_adjust_src_path,
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"geninfo_auto_base" => \$rc_auto_base,
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"lcov_function_coverage" => \$func_coverage,
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"lcov_branch_coverage" => \$br_coverage,
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});
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# Merge options
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if (defined($no_checksum))
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{
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$checksum = ($no_checksum ? 0 : 1);
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$no_checksum = undef;
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}
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# Check regexp
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if (defined($rc_adjust_src_path)) {
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my ($pattern, $replace) = split(/\s*=>\s*/,
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$rc_adjust_src_path);
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local $SIG{__DIE__};
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eval '$adjust_src_pattern = qr>'.$pattern.'>;';
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if (!defined($adjust_src_pattern)) {
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my $msg = $@;
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chomp($msg);
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$msg =~ s/at \(eval.*$//;
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warn("WARNING: invalid pattern in ".
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"geninfo_adjust_src_path: $msg\n");
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} elsif (!defined($replace)) {
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# If no replacement is specified, simply remove pattern
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$adjust_src_replace = "";
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} else {
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$adjust_src_replace = $replace;
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}
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}
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}
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# Parse command line options
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if (!GetOptions("test-name|t=s" => \$test_name,
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"output-filename|o=s" => \$output_filename,
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"checksum" => \$checksum,
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"no-checksum" => \$no_checksum,
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"base-directory|b=s" => \$base_directory,
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"version|v" =>\$version,
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"quiet|q" => \$quiet,
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"help|h|?" => \$help,
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"follow|f" => \$follow,
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"compat-libtool" => \$opt_compat_libtool,
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"no-compat-libtool" => \$opt_no_compat_libtool,
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"gcov-tool=s" => \$gcov_tool,
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"ignore-errors=s" => \@ignore_errors,
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"initial|i" => \$initial,
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"no-recursion" => \$no_recursion,
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"no-markers" => \$no_markers,
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"derive-func-data" => \$opt_derive_func_data,
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"debug" => \$debug,
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"external" => \$opt_external,
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"no-external" => \$opt_no_external,
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"compat=s" => \$opt_compat,
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"config-file=s" => \$opt_config_file,
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"rc=s%" => \%opt_rc,
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))
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{
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print(STDERR "Use $tool_name --help to get usage information\n");
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exit(1);
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}
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else
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{
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# Merge options
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if (defined($no_checksum))
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{
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$checksum = ($no_checksum ? 0 : 1);
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$no_checksum = undef;
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}
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if (defined($opt_no_compat_libtool))
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{
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$opt_compat_libtool = ($opt_no_compat_libtool ? 0 : 1);
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$opt_no_compat_libtool = undef;
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}
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if (defined($opt_no_external)) {
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$opt_external = 0;
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$opt_no_external = undef;
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}
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}
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@data_directory = @ARGV;
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# Check for help option
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if ($help)
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{
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print_usage(*STDOUT);
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exit(0);
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}
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# Check for version option
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if ($version)
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{
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print("$tool_name: $lcov_version\n");
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exit(0);
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}
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# Check gcov tool
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if (system_no_output(3, $gcov_tool, "--help") == -1)
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{
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die("ERROR: need tool $gcov_tool!\n");
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}
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($gcov_version, $gcov_version_string) = get_gcov_version();
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# Determine gcov options
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$gcov_caps = get_gcov_capabilities();
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push(@gcov_options, "-b") if ($gcov_caps->{'branch-probabilities'} &&
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($br_coverage || $func_coverage));
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push(@gcov_options, "-c") if ($gcov_caps->{'branch-counts'} &&
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$br_coverage);
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push(@gcov_options, "-a") if ($gcov_caps->{'all-blocks'} &&
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$opt_gcov_all_blocks && $br_coverage);
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push(@gcov_options, "-p") if ($gcov_caps->{'preserve-paths'});
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# Determine compatibility modes
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parse_compat_modes($opt_compat);
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# Determine which errors the user wants us to ignore
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parse_ignore_errors(@ignore_errors);
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# Make sure test names only contain valid characters
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if ($test_name =~ s/\W/_/g)
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{
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warn("WARNING: invalid characters removed from testname!\n");
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}
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# Adjust test name to include uname output if requested
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if ($adjust_testname)
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{
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$test_name .= "__".`uname -a`;
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$test_name =~ s/\W/_/g;
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}
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# Make sure base_directory contains an absolute path specification
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if ($base_directory)
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{
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$base_directory = solve_relative_path($cwd, $base_directory);
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}
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# Check for follow option
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if ($follow)
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{
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$follow = "-follow"
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}
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else
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{
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$follow = "";
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}
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# Determine checksum mode
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if (defined($checksum))
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{
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# Normalize to boolean
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$checksum = ($checksum ? 1 : 0);
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}
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else
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{
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# Default is off
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$checksum = 0;
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}
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# Determine max depth for recursion
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if ($no_recursion)
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{
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$maxdepth = "-maxdepth 1";
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}
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else
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{
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$maxdepth = "";
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}
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# Check for directory name
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if (!@data_directory)
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{
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die("No directory specified\n".
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"Use $tool_name --help to get usage information\n");
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}
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else
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{
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foreach (@data_directory)
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{
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stat($_);
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if (!-r _)
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{
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die("ERROR: cannot read $_!\n");
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}
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}
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}
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if ($gcov_version < $GCOV_VERSION_3_4_0)
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{
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if (is_compat($COMPAT_MODE_HAMMER))
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{
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$data_file_extension = ".da";
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$graph_file_extension = ".bbg";
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}
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else
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{
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|
$data_file_extension = ".da";
|
|
$graph_file_extension = ".bb";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$data_file_extension = ".gcda";
|
|
$graph_file_extension = ".gcno";
|
|
}
|
|
|
|
# Check output filename
|
|
if (defined($output_filename) && ($output_filename ne "-"))
|
|
{
|
|
# Initially create output filename, data is appended
|
|
# for each data file processed
|
|
local *DUMMY_HANDLE;
|
|
open(DUMMY_HANDLE, ">", $output_filename)
|
|
or die("ERROR: cannot create $output_filename!\n");
|
|
close(DUMMY_HANDLE);
|
|
|
|
# Make $output_filename an absolute path because we're going
|
|
# to change directories while processing files
|
|
if (!($output_filename =~ /^\/(.*)$/))
|
|
{
|
|
$output_filename = $cwd."/".$output_filename;
|
|
}
|
|
}
|
|
|
|
# Build list of directories to identify external files
|
|
foreach my $entry(@data_directory, $base_directory) {
|
|
next if (!defined($entry));
|
|
push(@internal_dirs, solve_relative_path($cwd, $entry));
|
|
}
|
|
|
|
# Do something
|
|
foreach my $entry (@data_directory) {
|
|
gen_info($entry);
|
|
}
|
|
|
|
if ($initial && $br_coverage) {
|
|
warn("Note: --initial does not generate branch coverage ".
|
|
"data\n");
|
|
}
|
|
info("Finished .info-file creation\n");
|
|
|
|
exit(0);
|
|
|
|
|
|
|
|
#
|
|
# print_usage(handle)
|
|
#
|
|
# Print usage information.
|
|
#
|
|
|
|
sub print_usage(*)
|
|
{
|
|
local *HANDLE = $_[0];
|
|
|
|
print(HANDLE <<END_OF_USAGE);
|
|
Usage: $tool_name [OPTIONS] DIRECTORY
|
|
|
|
Traverse DIRECTORY and create a .info file for each data file found. Note
|
|
that you may specify more than one directory, all of which are then processed
|
|
sequentially.
|
|
|
|
-h, --help Print this help, then exit
|
|
-v, --version Print version number, then exit
|
|
-q, --quiet Do not print progress messages
|
|
-i, --initial Capture initial zero coverage data
|
|
-t, --test-name NAME Use test case name NAME for resulting data
|
|
-o, --output-filename OUTFILE Write data only to OUTFILE
|
|
-f, --follow Follow links when searching .da/.gcda files
|
|
-b, --base-directory DIR Use DIR as base directory for relative paths
|
|
--(no-)checksum Enable (disable) line checksumming
|
|
--(no-)compat-libtool Enable (disable) libtool compatibility mode
|
|
--gcov-tool TOOL Specify gcov tool location
|
|
--ignore-errors ERROR Continue after ERROR (gcov, source, graph)
|
|
--no-recursion Exclude subdirectories from processing
|
|
--no-markers Ignore exclusion markers in source code
|
|
--derive-func-data Generate function data from line data
|
|
--(no-)external Include (ignore) data for external files
|
|
--config-file FILENAME Specify configuration file location
|
|
--rc SETTING=VALUE Override configuration file setting
|
|
--compat MODE=on|off|auto Set compat MODE (libtool, hammer, split_crc)
|
|
|
|
For more information see: $lcov_url
|
|
END_OF_USAGE
|
|
;
|
|
}
|
|
|
|
#
|
|
# get_common_prefix(min_dir, filenames)
|
|
#
|
|
# Return the longest path prefix shared by all filenames. MIN_DIR specifies
|
|
# the minimum number of directories that a filename may have after removing
|
|
# the prefix.
|
|
#
|
|
|
|
sub get_common_prefix($@)
|
|
{
|
|
my ($min_dir, @files) = @_;
|
|
my $file;
|
|
my @prefix;
|
|
my $i;
|
|
|
|
foreach $file (@files) {
|
|
my ($v, $d, $f) = splitpath($file);
|
|
my @comp = splitdir($d);
|
|
|
|
if (!@prefix) {
|
|
@prefix = @comp;
|
|
next;
|
|
}
|
|
for ($i = 0; $i < scalar(@comp) && $i < scalar(@prefix); $i++) {
|
|
if ($comp[$i] ne $prefix[$i] ||
|
|
((scalar(@comp) - ($i + 1)) <= $min_dir)) {
|
|
delete(@prefix[$i..scalar(@prefix)]);
|
|
last;
|
|
}
|
|
}
|
|
}
|
|
|
|
return catdir(@prefix);
|
|
}
|
|
|
|
#
|
|
# gen_info(directory)
|
|
#
|
|
# Traverse DIRECTORY and create a .info file for each data file found.
|
|
# The .info file contains TEST_NAME in the following format:
|
|
#
|
|
# TN:<test name>
|
|
#
|
|
# For each source file name referenced in the data file, there is a section
|
|
# containing source code and coverage data:
|
|
#
|
|
# SF:<absolute path to the source file>
|
|
# FN:<line number of function start>,<function name> for each function
|
|
# DA:<line number>,<execution count> for each instrumented line
|
|
# LH:<number of lines with an execution count> greater than 0
|
|
# LF:<number of instrumented lines>
|
|
#
|
|
# Sections are separated by:
|
|
#
|
|
# end_of_record
|
|
#
|
|
# In addition to the main source code file there are sections for each
|
|
# #included file containing executable code. Note that the absolute path
|
|
# of a source file is generated by interpreting the contents of the respective
|
|
# graph file. Relative filenames are prefixed with the directory in which the
|
|
# graph file is found. Note also that symbolic links to the graph file will be
|
|
# resolved so that the actual file path is used instead of the path to a link.
|
|
# This approach is necessary for the mechanism to work with the /proc/gcov
|
|
# files.
|
|
#
|
|
# Die on error.
|
|
#
|
|
|
|
sub gen_info($)
|
|
{
|
|
my $directory = $_[0];
|
|
my @file_list;
|
|
my $file;
|
|
my $prefix;
|
|
my $type;
|
|
my $ext;
|
|
|
|
if ($initial) {
|
|
$type = "graph";
|
|
$ext = $graph_file_extension;
|
|
} else {
|
|
$type = "data";
|
|
$ext = $data_file_extension;
|
|
}
|
|
|
|
if (-d $directory)
|
|
{
|
|
info("Scanning $directory for $ext files ...\n");
|
|
|
|
@file_list = `find "$directory" $maxdepth $follow -name \\*$ext -type f 2>/dev/null`;
|
|
chomp(@file_list);
|
|
@file_list or
|
|
die("ERROR: no $ext files found in $directory!\n");
|
|
$prefix = get_common_prefix(1, @file_list);
|
|
info("Found %d %s files in %s\n", $#file_list+1, $type,
|
|
$directory);
|
|
}
|
|
else
|
|
{
|
|
@file_list = ($directory);
|
|
$prefix = "";
|
|
}
|
|
|
|
# Process all files in list
|
|
foreach $file (@file_list) {
|
|
# Process file
|
|
if ($initial) {
|
|
process_graphfile($file, $prefix);
|
|
} else {
|
|
process_dafile($file, $prefix);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#
|
|
# derive_data(contentdata, funcdata, bbdata)
|
|
#
|
|
# Calculate function coverage data by combining line coverage data and the
|
|
# list of lines belonging to a function.
|
|
#
|
|
# contentdata: [ instr1, count1, source1, instr2, count2, source2, ... ]
|
|
# instr<n>: Instrumentation flag for line n
|
|
# count<n>: Execution count for line n
|
|
# source<n>: Source code for line n
|
|
#
|
|
# funcdata: [ count1, func1, count2, func2, ... ]
|
|
# count<n>: Execution count for function number n
|
|
# func<n>: Function name for function number n
|
|
#
|
|
# bbdata: function_name -> [ line1, line2, ... ]
|
|
# line<n>: Line number belonging to the corresponding function
|
|
#
|
|
|
|
sub derive_data($$$)
|
|
{
|
|
my ($contentdata, $funcdata, $bbdata) = @_;
|
|
my @gcov_content = @{$contentdata};
|
|
my @gcov_functions = @{$funcdata};
|
|
my %fn_count;
|
|
my %ln_fn;
|
|
my $line;
|
|
my $maxline;
|
|
my %fn_name;
|
|
my $fn;
|
|
my $count;
|
|
|
|
if (!defined($bbdata)) {
|
|
return @gcov_functions;
|
|
}
|
|
|
|
# First add existing function data
|
|
while (@gcov_functions) {
|
|
$count = shift(@gcov_functions);
|
|
$fn = shift(@gcov_functions);
|
|
|
|
$fn_count{$fn} = $count;
|
|
}
|
|
|
|
# Convert line coverage data to function data
|
|
foreach $fn (keys(%{$bbdata})) {
|
|
my $line_data = $bbdata->{$fn};
|
|
my $line;
|
|
my $fninstr = 0;
|
|
|
|
if ($fn eq "") {
|
|
next;
|
|
}
|
|
# Find the lowest line count for this function
|
|
$count = 0;
|
|
foreach $line (@$line_data) {
|
|
my $linstr = $gcov_content[ ( $line - 1 ) * 3 + 0 ];
|
|
my $lcount = $gcov_content[ ( $line - 1 ) * 3 + 1 ];
|
|
|
|
next if (!$linstr);
|
|
$fninstr = 1;
|
|
if (($lcount > 0) &&
|
|
(($count == 0) || ($lcount < $count))) {
|
|
$count = $lcount;
|
|
}
|
|
}
|
|
next if (!$fninstr);
|
|
$fn_count{$fn} = $count;
|
|
}
|
|
|
|
|
|
# Check if we got data for all functions
|
|
foreach $fn (keys(%fn_name)) {
|
|
if ($fn eq "") {
|
|
next;
|
|
}
|
|
if (defined($fn_count{$fn})) {
|
|
next;
|
|
}
|
|
warn("WARNING: no derived data found for function $fn\n");
|
|
}
|
|
|
|
# Convert hash to list in @gcov_functions format
|
|
foreach $fn (sort(keys(%fn_count))) {
|
|
push(@gcov_functions, $fn_count{$fn}, $fn);
|
|
}
|
|
|
|
return @gcov_functions;
|
|
}
|
|
|
|
#
|
|
# get_filenames(directory, pattern)
|
|
#
|
|
# Return a list of filenames found in directory which match the specified
|
|
# pattern.
|
|
#
|
|
# Die on error.
|
|
#
|
|
|
|
sub get_filenames($$)
|
|
{
|
|
my ($dirname, $pattern) = @_;
|
|
my @result;
|
|
my $directory;
|
|
local *DIR;
|
|
|
|
opendir(DIR, $dirname) or
|
|
die("ERROR: cannot read directory $dirname\n");
|
|
while ($directory = readdir(DIR)) {
|
|
push(@result, $directory) if ($directory =~ /$pattern/);
|
|
}
|
|
closedir(DIR);
|
|
|
|
return @result;
|
|
}
|
|
|
|
#
|
|
# process_dafile(da_filename, dir)
|
|
#
|
|
# Create a .info file for a single data file.
|
|
#
|
|
# Die on error.
|
|
#
|
|
|
|
sub process_dafile($$)
|
|
{
|
|
my ($file, $dir) = @_;
|
|
my $da_filename; # Name of data file to process
|
|
my $da_dir; # Directory of data file
|
|
my $source_dir; # Directory of source file
|
|
my $da_basename; # data filename without ".da/.gcda" extension
|
|
my $bb_filename; # Name of respective graph file
|
|
my $bb_basename; # Basename of the original graph file
|
|
my $graph; # Contents of graph file
|
|
my $instr; # Contents of graph file part 2
|
|
my $gcov_error; # Error code of gcov tool
|
|
my $object_dir; # Directory containing all object files
|
|
my $source_filename; # Name of a source code file
|
|
my $gcov_file; # Name of a .gcov file
|
|
my @gcov_content; # Content of a .gcov file
|
|
my $gcov_branches; # Branch content of a .gcov file
|
|
my @gcov_functions; # Function calls of a .gcov file
|
|
my @gcov_list; # List of generated .gcov files
|
|
my $line_number; # Line number count
|
|
my $lines_hit; # Number of instrumented lines hit
|
|
my $lines_found; # Number of instrumented lines found
|
|
my $funcs_hit; # Number of instrumented functions hit
|
|
my $funcs_found; # Number of instrumented functions found
|
|
my $br_hit;
|
|
my $br_found;
|
|
my $source; # gcov source header information
|
|
my $object; # gcov object header information
|
|
my @matches; # List of absolute paths matching filename
|
|
my @unprocessed; # List of unprocessed source code files
|
|
my $base_dir; # Base directory for current file
|
|
my @tmp_links; # Temporary links to be cleaned up
|
|
my @result;
|
|
my $index;
|
|
my $da_renamed; # If data file is to be renamed
|
|
local *INFO_HANDLE;
|
|
|
|
info("Processing %s\n", abs2rel($file, $dir));
|
|
# Get path to data file in absolute and normalized form (begins with /,
|
|
# contains no more ../ or ./)
|
|
$da_filename = solve_relative_path($cwd, $file);
|
|
|
|
# Get directory and basename of data file
|
|
($da_dir, $da_basename) = split_filename($da_filename);
|
|
|
|
$source_dir = $da_dir;
|
|
if (is_compat($COMPAT_MODE_LIBTOOL)) {
|
|
# Avoid files from .libs dirs
|
|
$source_dir =~ s/\.libs$//;
|
|
}
|
|
|
|
if (-z $da_filename)
|
|
{
|
|
$da_renamed = 1;
|
|
}
|
|
else
|
|
{
|
|
$da_renamed = 0;
|
|
}
|
|
|
|
# Construct base_dir for current file
|
|
if ($base_directory)
|
|
{
|
|
$base_dir = $base_directory;
|
|
}
|
|
else
|
|
{
|
|
$base_dir = $source_dir;
|
|
}
|
|
|
|
# Check for writable $base_dir (gcov will try to write files there)
|
|
stat($base_dir);
|
|
if (!-w _)
|
|
{
|
|
die("ERROR: cannot write to directory $base_dir!\n");
|
|
}
|
|
|
|
# Construct name of graph file
|
|
$bb_basename = $da_basename.$graph_file_extension;
|
|
$bb_filename = "$da_dir/$bb_basename";
|
|
|
|
# Find out the real location of graph file in case we're just looking at
|
|
# a link
|
|
while (readlink($bb_filename))
|
|
{
|
|
my $last_dir = dirname($bb_filename);
|
|
|
|
$bb_filename = readlink($bb_filename);
|
|
$bb_filename = solve_relative_path($last_dir, $bb_filename);
|
|
}
|
|
|
|
# Ignore empty graph file (e.g. source file with no statement)
|
|
if (-z $bb_filename)
|
|
{
|
|
warn("WARNING: empty $bb_filename (skipped)\n");
|
|
return;
|
|
}
|
|
|
|
# Read contents of graph file into hash. We need it later to find out
|
|
# the absolute path to each .gcov file created as well as for
|
|
# information about functions and their source code positions.
|
|
if ($gcov_version < $GCOV_VERSION_3_4_0)
|
|
{
|
|
if (is_compat($COMPAT_MODE_HAMMER))
|
|
{
|
|
($instr, $graph) = read_bbg($bb_filename);
|
|
}
|
|
else
|
|
{
|
|
($instr, $graph) = read_bb($bb_filename);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
($instr, $graph) = read_gcno($bb_filename);
|
|
}
|
|
|
|
# Try to find base directory automatically if requested by user
|
|
if ($rc_auto_base) {
|
|
$base_dir = find_base_from_graph($base_dir, $instr, $graph);
|
|
}
|
|
|
|
($instr, $graph) = adjust_graph_filenames($base_dir, $instr, $graph);
|
|
|
|
# Set $object_dir to real location of object files. This may differ
|
|
# from $da_dir if the graph file is just a link to the "real" object
|
|
# file location.
|
|
$object_dir = dirname($bb_filename);
|
|
|
|
# Is the data file in a different directory? (this happens e.g. with
|
|
# the gcov-kernel patch)
|
|
if ($object_dir ne $da_dir)
|
|
{
|
|
# Need to create link to data file in $object_dir
|
|
system("ln", "-s", $da_filename,
|
|
"$object_dir/$da_basename$data_file_extension")
|
|
and die ("ERROR: cannot create link $object_dir/".
|
|
"$da_basename$data_file_extension!\n");
|
|
push(@tmp_links,
|
|
"$object_dir/$da_basename$data_file_extension");
|
|
# Need to create link to graph file if basename of link
|
|
# and file are different (CONFIG_MODVERSION compat)
|
|
if ((basename($bb_filename) ne $bb_basename) &&
|
|
(! -e "$object_dir/$bb_basename")) {
|
|
symlink($bb_filename, "$object_dir/$bb_basename") or
|
|
warn("WARNING: cannot create link ".
|
|
"$object_dir/$bb_basename\n");
|
|
push(@tmp_links, "$object_dir/$bb_basename");
|
|
}
|
|
}
|
|
|
|
# Change to directory containing data files and apply GCOV
|
|
debug("chdir($base_dir)\n");
|
|
chdir($base_dir);
|
|
|
|
if ($da_renamed)
|
|
{
|
|
# Need to rename empty data file to workaround
|
|
# gcov <= 3.2.x bug (Abort)
|
|
system_no_output(3, "mv", "$da_filename", "$da_filename.ori")
|
|
and die ("ERROR: cannot rename $da_filename\n");
|
|
}
|
|
|
|
# Execute gcov command and suppress standard output
|
|
$gcov_error = system_no_output(1, $gcov_tool, $da_filename,
|
|
"-o", $object_dir, @gcov_options);
|
|
|
|
if ($da_renamed)
|
|
{
|
|
system_no_output(3, "mv", "$da_filename.ori", "$da_filename")
|
|
and die ("ERROR: cannot rename $da_filename.ori");
|
|
}
|
|
|
|
# Clean up temporary links
|
|
foreach (@tmp_links) {
|
|
unlink($_);
|
|
}
|
|
|
|
if ($gcov_error)
|
|
{
|
|
if ($ignore[$ERROR_GCOV])
|
|
{
|
|
warn("WARNING: GCOV failed for $da_filename!\n");
|
|
return;
|
|
}
|
|
warn("WARNING: GCOV failed for $da_filename!\n");
|
|
}
|
|
|
|
# Collect data from resulting .gcov files and create .info file
|
|
@gcov_list = get_filenames('.', '\.gcov$');
|
|
|
|
# Check for files
|
|
if (!@gcov_list)
|
|
{
|
|
warn("WARNING: gcov did not create any files for ".
|
|
"$da_filename!\n");
|
|
}
|
|
|
|
# Check whether we're writing to a single file
|
|
if ($output_filename)
|
|
{
|
|
if ($output_filename eq "-")
|
|
{
|
|
*INFO_HANDLE = *STDOUT;
|
|
}
|
|
else
|
|
{
|
|
# Append to output file
|
|
open(INFO_HANDLE, ">>", $output_filename)
|
|
or die("ERROR: cannot write to ".
|
|
"$output_filename!\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
# Open .info file for output
|
|
open(INFO_HANDLE, ">", "$da_filename.info")
|
|
or die("ERROR: cannot create $da_filename.info!\n");
|
|
}
|
|
|
|
# Write test name
|
|
printf(INFO_HANDLE "TN:%s\n", $test_name);
|
|
|
|
# Traverse the list of generated .gcov files and combine them into a
|
|
# single .info file
|
|
@unprocessed = keys(%{$instr});
|
|
foreach $gcov_file (sort(@gcov_list))
|
|
{
|
|
my $i;
|
|
my $num;
|
|
|
|
# Skip gcov file for gcc built-in code
|
|
next if ($gcov_file eq "<built-in>.gcov");
|
|
|
|
($source, $object) = read_gcov_header($gcov_file);
|
|
|
|
if (!defined($source)) {
|
|
# Derive source file name from gcov file name if
|
|
# header format could not be parsed
|
|
$source = $gcov_file;
|
|
$source =~ s/\.gcov$//;
|
|
}
|
|
|
|
$source = solve_relative_path($base_dir, $source);
|
|
|
|
if (defined($adjust_src_pattern)) {
|
|
# Apply transformation as specified by user
|
|
$source =~ s/$adjust_src_pattern/$adjust_src_replace/g;
|
|
}
|
|
|
|
# gcov will happily create output even if there's no source code
|
|
# available - this interferes with checksum creation so we need
|
|
# to pull the emergency brake here.
|
|
if (! -r $source && $checksum)
|
|
{
|
|
if ($ignore[$ERROR_SOURCE])
|
|
{
|
|
warn("WARNING: could not read source file ".
|
|
"$source\n");
|
|
next;
|
|
}
|
|
die("ERROR: could not read source file $source\n");
|
|
}
|
|
|
|
@matches = match_filename($source, keys(%{$instr}));
|
|
|
|
# Skip files that are not mentioned in the graph file
|
|
if (!@matches)
|
|
{
|
|
warn("WARNING: cannot find an entry for ".$gcov_file.
|
|
" in $graph_file_extension file, skipping ".
|
|
"file!\n");
|
|
unlink($gcov_file);
|
|
next;
|
|
}
|
|
|
|
# Read in contents of gcov file
|
|
@result = read_gcov_file($gcov_file);
|
|
if (!defined($result[0])) {
|
|
warn("WARNING: skipping unreadable file ".
|
|
$gcov_file."\n");
|
|
unlink($gcov_file);
|
|
next;
|
|
}
|
|
@gcov_content = @{$result[0]};
|
|
$gcov_branches = $result[1];
|
|
@gcov_functions = @{$result[2]};
|
|
|
|
# Skip empty files
|
|
if (!@gcov_content)
|
|
{
|
|
warn("WARNING: skipping empty file ".$gcov_file."\n");
|
|
unlink($gcov_file);
|
|
next;
|
|
}
|
|
|
|
if (scalar(@matches) == 1)
|
|
{
|
|
# Just one match
|
|
$source_filename = $matches[0];
|
|
}
|
|
else
|
|
{
|
|
# Try to solve the ambiguity
|
|
$source_filename = solve_ambiguous_match($gcov_file,
|
|
\@matches, \@gcov_content);
|
|
}
|
|
|
|
# Remove processed file from list
|
|
for ($index = scalar(@unprocessed) - 1; $index >= 0; $index--)
|
|
{
|
|
if ($unprocessed[$index] eq $source_filename)
|
|
{
|
|
splice(@unprocessed, $index, 1);
|
|
last;
|
|
}
|
|
}
|
|
|
|
# Skip external files if requested
|
|
if (!$opt_external) {
|
|
if (is_external($source_filename)) {
|
|
info(" ignoring data for external file ".
|
|
"$source_filename\n");
|
|
unlink($gcov_file);
|
|
next;
|
|
}
|
|
}
|
|
|
|
# Write absolute path of source file
|
|
printf(INFO_HANDLE "SF:%s\n", $source_filename);
|
|
|
|
# If requested, derive function coverage data from
|
|
# line coverage data of the first line of a function
|
|
if ($opt_derive_func_data) {
|
|
@gcov_functions =
|
|
derive_data(\@gcov_content, \@gcov_functions,
|
|
$graph->{$source_filename});
|
|
}
|
|
|
|
# Write function-related information
|
|
if (defined($graph->{$source_filename}))
|
|
{
|
|
my $fn_data = $graph->{$source_filename};
|
|
my $fn;
|
|
|
|
foreach $fn (sort
|
|
{$fn_data->{$a}->[0] <=> $fn_data->{$b}->[0]}
|
|
keys(%{$fn_data})) {
|
|
my $ln_data = $fn_data->{$fn};
|
|
my $line = $ln_data->[0];
|
|
|
|
# Skip empty function
|
|
if ($fn eq "") {
|
|
next;
|
|
}
|
|
# Remove excluded functions
|
|
if (!$no_markers) {
|
|
my $gfn;
|
|
my $found = 0;
|
|
|
|
foreach $gfn (@gcov_functions) {
|
|
if ($gfn eq $fn) {
|
|
$found = 1;
|
|
last;
|
|
}
|
|
}
|
|
if (!$found) {
|
|
next;
|
|
}
|
|
}
|
|
|
|
# Normalize function name
|
|
$fn = filter_fn_name($fn);
|
|
|
|
print(INFO_HANDLE "FN:$line,$fn\n");
|
|
}
|
|
}
|
|
|
|
#--
|
|
#-- FNDA: <call-count>, <function-name>
|
|
#-- FNF: overall count of functions
|
|
#-- FNH: overall count of functions with non-zero call count
|
|
#--
|
|
$funcs_found = 0;
|
|
$funcs_hit = 0;
|
|
while (@gcov_functions)
|
|
{
|
|
my $count = shift(@gcov_functions);
|
|
my $fn = shift(@gcov_functions);
|
|
|
|
$fn = filter_fn_name($fn);
|
|
printf(INFO_HANDLE "FNDA:$count,$fn\n");
|
|
$funcs_found++;
|
|
$funcs_hit++ if ($count > 0);
|
|
}
|
|
if ($funcs_found > 0) {
|
|
printf(INFO_HANDLE "FNF:%s\n", $funcs_found);
|
|
printf(INFO_HANDLE "FNH:%s\n", $funcs_hit);
|
|
}
|
|
|
|
# Write coverage information for each instrumented branch:
|
|
#
|
|
# BRDA:<line number>,<block number>,<branch number>,<taken>
|
|
#
|
|
# where 'taken' is the number of times the branch was taken
|
|
# or '-' if the block to which the branch belongs was never
|
|
# executed
|
|
$br_found = 0;
|
|
$br_hit = 0;
|
|
$num = br_gvec_len($gcov_branches);
|
|
for ($i = 0; $i < $num; $i++) {
|
|
my ($line, $block, $branch, $taken) =
|
|
br_gvec_get($gcov_branches, $i);
|
|
|
|
print(INFO_HANDLE "BRDA:$line,$block,$branch,$taken\n");
|
|
$br_found++;
|
|
$br_hit++ if ($taken ne '-' && $taken > 0);
|
|
}
|
|
if ($br_found > 0) {
|
|
printf(INFO_HANDLE "BRF:%s\n", $br_found);
|
|
printf(INFO_HANDLE "BRH:%s\n", $br_hit);
|
|
}
|
|
|
|
# Reset line counters
|
|
$line_number = 0;
|
|
$lines_found = 0;
|
|
$lines_hit = 0;
|
|
|
|
# Write coverage information for each instrumented line
|
|
# Note: @gcov_content contains a list of (flag, count, source)
|
|
# tuple for each source code line
|
|
while (@gcov_content)
|
|
{
|
|
$line_number++;
|
|
|
|
# Check for instrumented line
|
|
if ($gcov_content[0])
|
|
{
|
|
$lines_found++;
|
|
printf(INFO_HANDLE "DA:".$line_number.",".
|
|
$gcov_content[1].($checksum ?
|
|
",". md5_base64($gcov_content[2]) : "").
|
|
"\n");
|
|
|
|
# Increase $lines_hit in case of an execution
|
|
# count>0
|
|
if ($gcov_content[1] > 0) { $lines_hit++; }
|
|
}
|
|
|
|
# Remove already processed data from array
|
|
splice(@gcov_content,0,3);
|
|
}
|
|
|
|
# Write line statistics and section separator
|
|
printf(INFO_HANDLE "LF:%s\n", $lines_found);
|
|
printf(INFO_HANDLE "LH:%s\n", $lines_hit);
|
|
print(INFO_HANDLE "end_of_record\n");
|
|
|
|
# Remove .gcov file after processing
|
|
unlink($gcov_file);
|
|
}
|
|
|
|
# Check for files which show up in the graph file but were never
|
|
# processed
|
|
if (@unprocessed && @gcov_list)
|
|
{
|
|
foreach (@unprocessed)
|
|
{
|
|
warn("WARNING: no data found for $_\n");
|
|
}
|
|
}
|
|
|
|
if (!($output_filename && ($output_filename eq "-")))
|
|
{
|
|
close(INFO_HANDLE);
|
|
}
|
|
|
|
# Change back to initial directory
|
|
chdir($cwd);
|
|
}
|
|
|
|
|
|
#
|
|
# solve_relative_path(path, dir)
|
|
#
|
|
# Solve relative path components of DIR which, if not absolute, resides in PATH.
|
|
#
|
|
|
|
sub solve_relative_path($$)
|
|
{
|
|
my $path = $_[0];
|
|
my $dir = $_[1];
|
|
my $volume;
|
|
my $directories;
|
|
my $filename;
|
|
my @dirs; # holds path elements
|
|
my $result;
|
|
|
|
# Convert from Windows path to msys path
|
|
if( $^O eq "msys" )
|
|
{
|
|
# search for a windows drive letter at the beginning
|
|
($volume, $directories, $filename) = File::Spec::Win32->splitpath( $dir );
|
|
if( $volume ne '' )
|
|
{
|
|
my $uppercase_volume;
|
|
# transform c/d\../e/f\g to Windows style c\d\..\e\f\g
|
|
$dir = File::Spec::Win32->canonpath( $dir );
|
|
# use Win32 module to retrieve path components
|
|
# $uppercase_volume is not used any further
|
|
( $uppercase_volume, $directories, $filename ) = File::Spec::Win32->splitpath( $dir );
|
|
@dirs = File::Spec::Win32->splitdir( $directories );
|
|
|
|
# prepend volume, since in msys C: is always mounted to /c
|
|
$volume =~ s|^([a-zA-Z]+):|/\L$1\E|;
|
|
unshift( @dirs, $volume );
|
|
|
|
# transform to Unix style '/' path
|
|
$directories = File::Spec->catdir( @dirs );
|
|
$dir = File::Spec->catpath( '', $directories, $filename );
|
|
} else {
|
|
# eliminate '\' path separators
|
|
$dir = File::Spec->canonpath( $dir );
|
|
}
|
|
}
|
|
|
|
$result = $dir;
|
|
# Prepend path if not absolute
|
|
if ($dir =~ /^[^\/]/)
|
|
{
|
|
$result = "$path/$result";
|
|
}
|
|
|
|
# Remove //
|
|
$result =~ s/\/\//\//g;
|
|
|
|
# Remove .
|
|
$result =~ s/\/\.\//\//g;
|
|
$result =~ s/\/\.$/\//g;
|
|
|
|
# Remove trailing /
|
|
$result =~ s/\/$//g;
|
|
|
|
# Solve ..
|
|
while ($result =~ s/\/[^\/]+\/\.\.\//\//)
|
|
{
|
|
}
|
|
|
|
# Remove preceding ..
|
|
$result =~ s/^\/\.\.\//\//g;
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
#
|
|
# match_filename(gcov_filename, list)
|
|
#
|
|
# Return a list of those entries of LIST which match the relative filename
|
|
# GCOV_FILENAME.
|
|
#
|
|
|
|
sub match_filename($@)
|
|
{
|
|
my ($filename, @list) = @_;
|
|
my ($vol, $dir, $file) = splitpath($filename);
|
|
my @comp = splitdir($dir);
|
|
my $comps = scalar(@comp);
|
|
my $entry;
|
|
my @result;
|
|
|
|
entry:
|
|
foreach $entry (@list) {
|
|
my ($evol, $edir, $efile) = splitpath($entry);
|
|
my @ecomp;
|
|
my $ecomps;
|
|
my $i;
|
|
|
|
# Filename component must match
|
|
if ($efile ne $file) {
|
|
next;
|
|
}
|
|
# Check directory components last to first for match
|
|
@ecomp = splitdir($edir);
|
|
$ecomps = scalar(@ecomp);
|
|
if ($ecomps < $comps) {
|
|
next;
|
|
}
|
|
for ($i = 0; $i < $comps; $i++) {
|
|
if ($comp[$comps - $i - 1] ne
|
|
$ecomp[$ecomps - $i - 1]) {
|
|
next entry;
|
|
}
|
|
}
|
|
push(@result, $entry),
|
|
}
|
|
|
|
return @result;
|
|
}
|
|
|
|
#
|
|
# solve_ambiguous_match(rel_filename, matches_ref, gcov_content_ref)
|
|
#
|
|
# Try to solve ambiguous matches of mapping (gcov file) -> (source code) file
|
|
# by comparing source code provided in the GCOV file with that of the files
|
|
# in MATCHES. REL_FILENAME identifies the relative filename of the gcov
|
|
# file.
|
|
#
|
|
# Return the one real match or die if there is none.
|
|
#
|
|
|
|
sub solve_ambiguous_match($$$)
|
|
{
|
|
my $rel_name = $_[0];
|
|
my $matches = $_[1];
|
|
my $content = $_[2];
|
|
my $filename;
|
|
my $index;
|
|
my $no_match;
|
|
local *SOURCE;
|
|
|
|
# Check the list of matches
|
|
foreach $filename (@$matches)
|
|
{
|
|
|
|
# Compare file contents
|
|
open(SOURCE, "<", $filename)
|
|
or die("ERROR: cannot read $filename!\n");
|
|
|
|
$no_match = 0;
|
|
for ($index = 2; <SOURCE>; $index += 3)
|
|
{
|
|
chomp;
|
|
|
|
# Also remove CR from line-end
|
|
s/\015$//;
|
|
|
|
if ($_ ne @$content[$index])
|
|
{
|
|
$no_match = 1;
|
|
last;
|
|
}
|
|
}
|
|
|
|
close(SOURCE);
|
|
|
|
if (!$no_match)
|
|
{
|
|
info("Solved source file ambiguity for $rel_name\n");
|
|
return $filename;
|
|
}
|
|
}
|
|
|
|
die("ERROR: could not match gcov data for $rel_name!\n");
|
|
}
|
|
|
|
|
|
#
|
|
# split_filename(filename)
|
|
#
|
|
# Return (path, filename, extension) for a given FILENAME.
|
|
#
|
|
|
|
sub split_filename($)
|
|
{
|
|
my @path_components = split('/', $_[0]);
|
|
my @file_components = split('\.', pop(@path_components));
|
|
my $extension = pop(@file_components);
|
|
|
|
return (join("/",@path_components), join(".",@file_components),
|
|
$extension);
|
|
}
|
|
|
|
|
|
#
|
|
# read_gcov_header(gcov_filename)
|
|
#
|
|
# Parse file GCOV_FILENAME and return a list containing the following
|
|
# information:
|
|
#
|
|
# (source, object)
|
|
#
|
|
# where:
|
|
#
|
|
# source: complete relative path of the source code file (gcc >= 3.3 only)
|
|
# object: name of associated graph file
|
|
#
|
|
# Die on error.
|
|
#
|
|
|
|
sub read_gcov_header($)
|
|
{
|
|
my $source;
|
|
my $object;
|
|
local *INPUT;
|
|
|
|
if (!open(INPUT, "<", $_[0]))
|
|
{
|
|
if ($ignore_errors[$ERROR_GCOV])
|
|
{
|
|
warn("WARNING: cannot read $_[0]!\n");
|
|
return (undef,undef);
|
|
}
|
|
die("ERROR: cannot read $_[0]!\n");
|
|
}
|
|
|
|
while (<INPUT>)
|
|
{
|
|
chomp($_);
|
|
|
|
# Also remove CR from line-end
|
|
s/\015$//;
|
|
|
|
if (/^\s+-:\s+0:Source:(.*)$/)
|
|
{
|
|
# Source: header entry
|
|
$source = $1;
|
|
}
|
|
elsif (/^\s+-:\s+0:Object:(.*)$/)
|
|
{
|
|
# Object: header entry
|
|
$object = $1;
|
|
}
|
|
else
|
|
{
|
|
last;
|
|
}
|
|
}
|
|
|
|
close(INPUT);
|
|
|
|
return ($source, $object);
|
|
}
|
|
|
|
|
|
#
|
|
# br_gvec_len(vector)
|
|
#
|
|
# Return the number of entries in the branch coverage vector.
|
|
#
|
|
|
|
sub br_gvec_len($)
|
|
{
|
|
my ($vec) = @_;
|
|
|
|
return 0 if (!defined($vec));
|
|
return (length($vec) * 8 / $BR_VEC_WIDTH) / $BR_VEC_ENTRIES;
|
|
}
|
|
|
|
|
|
#
|
|
# br_gvec_get(vector, number)
|
|
#
|
|
# Return an entry from the branch coverage vector.
|
|
#
|
|
|
|
sub br_gvec_get($$)
|
|
{
|
|
my ($vec, $num) = @_;
|
|
my $line;
|
|
my $block;
|
|
my $branch;
|
|
my $taken;
|
|
my $offset = $num * $BR_VEC_ENTRIES;
|
|
|
|
# Retrieve data from vector
|
|
$line = vec($vec, $offset + $BR_LINE, $BR_VEC_WIDTH);
|
|
$block = vec($vec, $offset + $BR_BLOCK, $BR_VEC_WIDTH);
|
|
$branch = vec($vec, $offset + $BR_BRANCH, $BR_VEC_WIDTH);
|
|
$taken = vec($vec, $offset + $BR_TAKEN, $BR_VEC_WIDTH);
|
|
|
|
# Decode taken value from an integer
|
|
if ($taken == 0) {
|
|
$taken = "-";
|
|
} else {
|
|
$taken--;
|
|
}
|
|
|
|
return ($line, $block, $branch, $taken);
|
|
}
|
|
|
|
|
|
#
|
|
# br_gvec_push(vector, line, block, branch, taken)
|
|
#
|
|
# Add an entry to the branch coverage vector.
|
|
#
|
|
|
|
sub br_gvec_push($$$$$)
|
|
{
|
|
my ($vec, $line, $block, $branch, $taken) = @_;
|
|
my $offset;
|
|
|
|
$vec = "" if (!defined($vec));
|
|
$offset = br_gvec_len($vec) * $BR_VEC_ENTRIES;
|
|
|
|
# Encode taken value into an integer
|
|
if ($taken eq "-") {
|
|
$taken = 0;
|
|
} else {
|
|
$taken++;
|
|
}
|
|
|
|
# Add to vector
|
|
vec($vec, $offset + $BR_LINE, $BR_VEC_WIDTH) = $line;
|
|
vec($vec, $offset + $BR_BLOCK, $BR_VEC_WIDTH) = $block;
|
|
vec($vec, $offset + $BR_BRANCH, $BR_VEC_WIDTH) = $branch;
|
|
vec($vec, $offset + $BR_TAKEN, $BR_VEC_WIDTH) = $taken;
|
|
|
|
return $vec;
|
|
}
|
|
|
|
|
|
#
|
|
# read_gcov_file(gcov_filename)
|
|
#
|
|
# Parse file GCOV_FILENAME (.gcov file format) and return the list:
|
|
# (reference to gcov_content, reference to gcov_branch, reference to gcov_func)
|
|
#
|
|
# gcov_content is a list of 3 elements
|
|
# (flag, count, source) for each source code line:
|
|
#
|
|
# $result[($line_number-1)*3+0] = instrumentation flag for line $line_number
|
|
# $result[($line_number-1)*3+1] = execution count for line $line_number
|
|
# $result[($line_number-1)*3+2] = source code text for line $line_number
|
|
#
|
|
# gcov_branch is a vector of 4 4-byte long elements for each branch:
|
|
# line number, block number, branch number, count + 1 or 0
|
|
#
|
|
# gcov_func is a list of 2 elements
|
|
# (number of calls, function name) for each function
|
|
#
|
|
# Die on error.
|
|
#
|
|
|
|
sub read_gcov_file($)
|
|
{
|
|
my $filename = $_[0];
|
|
my @result = ();
|
|
my $branches = "";
|
|
my @functions = ();
|
|
my $number;
|
|
my $exclude_flag = 0;
|
|
my $exclude_line = 0;
|
|
my $last_block = $UNNAMED_BLOCK;
|
|
my $last_line = 0;
|
|
local *INPUT;
|
|
|
|
if (!open(INPUT, "<", $filename)) {
|
|
if ($ignore_errors[$ERROR_GCOV])
|
|
{
|
|
warn("WARNING: cannot read $filename!\n");
|
|
return (undef, undef, undef);
|
|
}
|
|
die("ERROR: cannot read $filename!\n");
|
|
}
|
|
|
|
if ($gcov_version < $GCOV_VERSION_3_3_0)
|
|
{
|
|
# Expect gcov format as used in gcc < 3.3
|
|
while (<INPUT>)
|
|
{
|
|
chomp($_);
|
|
|
|
# Also remove CR from line-end
|
|
s/\015$//;
|
|
|
|
if (/^branch\s+(\d+)\s+taken\s+=\s+(\d+)/) {
|
|
next if (!$br_coverage);
|
|
next if ($exclude_line);
|
|
$branches = br_gvec_push($branches, $last_line,
|
|
$last_block, $1, $2);
|
|
} elsif (/^branch\s+(\d+)\s+never\s+executed/) {
|
|
next if (!$br_coverage);
|
|
next if ($exclude_line);
|
|
$branches = br_gvec_push($branches, $last_line,
|
|
$last_block, $1, '-');
|
|
}
|
|
elsif (/^call/ || /^function/)
|
|
{
|
|
# Function call return data
|
|
}
|
|
else
|
|
{
|
|
$last_line++;
|
|
# Check for exclusion markers
|
|
if (!$no_markers) {
|
|
if (/$EXCL_STOP/) {
|
|
$exclude_flag = 0;
|
|
} elsif (/$EXCL_START/) {
|
|
$exclude_flag = 1;
|
|
}
|
|
if (/$EXCL_LINE/ || $exclude_flag) {
|
|
$exclude_line = 1;
|
|
} else {
|
|
$exclude_line = 0;
|
|
}
|
|
}
|
|
# Source code execution data
|
|
if (/^\t\t(.*)$/)
|
|
{
|
|
# Uninstrumented line
|
|
push(@result, 0);
|
|
push(@result, 0);
|
|
push(@result, $1);
|
|
next;
|
|
}
|
|
$number = (split(" ",substr($_, 0, 16)))[0];
|
|
|
|
# Check for zero count which is indicated
|
|
# by ######
|
|
if ($number eq "######") { $number = 0; }
|
|
|
|
if ($exclude_line) {
|
|
# Register uninstrumented line instead
|
|
push(@result, 0);
|
|
push(@result, 0);
|
|
} else {
|
|
push(@result, 1);
|
|
push(@result, $number);
|
|
}
|
|
push(@result, substr($_, 16));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
# Expect gcov format as used in gcc >= 3.3
|
|
while (<INPUT>)
|
|
{
|
|
chomp($_);
|
|
|
|
# Also remove CR from line-end
|
|
s/\015$//;
|
|
|
|
if (/^\s*(\d+|\$+):\s*(\d+)-block\s+(\d+)\s*$/) {
|
|
# Block information - used to group related
|
|
# branches
|
|
$last_line = $2;
|
|
$last_block = $3;
|
|
} elsif (/^branch\s+(\d+)\s+taken\s+(\d+)/) {
|
|
next if (!$br_coverage);
|
|
next if ($exclude_line);
|
|
$branches = br_gvec_push($branches, $last_line,
|
|
$last_block, $1, $2);
|
|
} elsif (/^branch\s+(\d+)\s+never\s+executed/) {
|
|
next if (!$br_coverage);
|
|
next if ($exclude_line);
|
|
$branches = br_gvec_push($branches, $last_line,
|
|
$last_block, $1, '-');
|
|
}
|
|
elsif (/^function\s+(.+)\s+called\s+(\d+)\s+/)
|
|
{
|
|
next if (!$func_coverage);
|
|
if ($exclude_line) {
|
|
next;
|
|
}
|
|
push(@functions, $2, $1);
|
|
}
|
|
elsif (/^call/)
|
|
{
|
|
# Function call return data
|
|
}
|
|
elsif (/^\s*([^:]+):\s*([^:]+):(.*)$/)
|
|
{
|
|
my ($count, $line, $code) = ($1, $2, $3);
|
|
|
|
$last_line = $line;
|
|
$last_block = $UNNAMED_BLOCK;
|
|
# Check for exclusion markers
|
|
if (!$no_markers) {
|
|
if (/$EXCL_STOP/) {
|
|
$exclude_flag = 0;
|
|
} elsif (/$EXCL_START/) {
|
|
$exclude_flag = 1;
|
|
}
|
|
if (/$EXCL_LINE/ || $exclude_flag) {
|
|
$exclude_line = 1;
|
|
} else {
|
|
$exclude_line = 0;
|
|
}
|
|
}
|
|
# <exec count>:<line number>:<source code>
|
|
if ($line eq "0")
|
|
{
|
|
# Extra data
|
|
}
|
|
elsif ($count eq "-")
|
|
{
|
|
# Uninstrumented line
|
|
push(@result, 0);
|
|
push(@result, 0);
|
|
push(@result, $code);
|
|
}
|
|
else
|
|
{
|
|
if ($exclude_line) {
|
|
push(@result, 0);
|
|
push(@result, 0);
|
|
} else {
|
|
# Check for zero count
|
|
if ($count eq "#####") {
|
|
$count = 0;
|
|
}
|
|
push(@result, 1);
|
|
push(@result, $count);
|
|
}
|
|
push(@result, $code);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
close(INPUT);
|
|
if ($exclude_flag) {
|
|
warn("WARNING: unterminated exclusion section in $filename\n");
|
|
}
|
|
return(\@result, $branches, \@functions);
|
|
}
|
|
|
|
|
|
#
|
|
# Get the GCOV tool version. Return an integer number which represents the
|
|
# GCOV version. Version numbers can be compared using standard integer
|
|
# operations.
|
|
#
|
|
|
|
sub get_gcov_version()
|
|
{
|
|
local *HANDLE;
|
|
my $version_string;
|
|
my $result;
|
|
|
|
open(GCOV_PIPE, "-|", "$gcov_tool --version")
|
|
or die("ERROR: cannot retrieve gcov version!\n");
|
|
$version_string = <GCOV_PIPE>;
|
|
close(GCOV_PIPE);
|
|
|
|
$result = 0;
|
|
if ($version_string =~ m/LLVM/)
|
|
{
|
|
info("Found llvm-cov\n");
|
|
$result = 0x40201;
|
|
}
|
|
elsif ($version_string =~ /(\d+)\.(\d+)(\.(\d+))?/)
|
|
{
|
|
if (defined($4))
|
|
{
|
|
info("Found gcov version: $1.$2.$4\n");
|
|
$result = $1 << 16 | $2 << 8 | $4;
|
|
}
|
|
else
|
|
{
|
|
info("Found gcov version: $1.$2\n");
|
|
$result = $1 << 16 | $2 << 8;
|
|
}
|
|
}
|
|
return ($result, $version_string);
|
|
}
|
|
|
|
#
|
|
# info(printf_parameter)
|
|
#
|
|
# Use printf to write PRINTF_PARAMETER to stdout only when the $quiet flag
|
|
# is not set.
|
|
#
|
|
|
|
sub info(@)
|
|
{
|
|
if (!$quiet)
|
|
{
|
|
# Print info string
|
|
if (defined($output_filename) && ($output_filename eq "-"))
|
|
{
|
|
# Don't interfere with the .info output to STDOUT
|
|
printf(STDERR @_);
|
|
}
|
|
else
|
|
{
|
|
printf(@_);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#
|
|
# int_handler()
|
|
#
|
|
# Called when the script was interrupted by an INT signal (e.g. CTRl-C)
|
|
#
|
|
|
|
sub int_handler()
|
|
{
|
|
if ($cwd) { chdir($cwd); }
|
|
info("Aborted.\n");
|
|
exit(1);
|
|
}
|
|
|
|
|
|
#
|
|
# system_no_output(mode, parameters)
|
|
#
|
|
# Call an external program using PARAMETERS while suppressing depending on
|
|
# the value of MODE:
|
|
#
|
|
# MODE & 1: suppress STDOUT
|
|
# MODE & 2: suppress STDERR
|
|
#
|
|
# Return 0 on success, non-zero otherwise.
|
|
#
|
|
|
|
sub system_no_output($@)
|
|
{
|
|
my $mode = shift;
|
|
my $result;
|
|
local *OLD_STDERR;
|
|
local *OLD_STDOUT;
|
|
|
|
# Save old stdout and stderr handles
|
|
($mode & 1) && open(OLD_STDOUT, ">>&", "STDOUT");
|
|
($mode & 2) && open(OLD_STDERR, ">>&", "STDERR");
|
|
|
|
# Redirect to /dev/null
|
|
($mode & 1) && open(STDOUT, ">", "/dev/null");
|
|
($mode & 2) && open(STDERR, ">", "/dev/null");
|
|
|
|
debug("system(".join(' ', @_).")\n");
|
|
system(@_);
|
|
$result = $?;
|
|
|
|
# Close redirected handles
|
|
($mode & 1) && close(STDOUT);
|
|
($mode & 2) && close(STDERR);
|
|
|
|
# Restore old handles
|
|
($mode & 1) && open(STDOUT, ">>&", "OLD_STDOUT");
|
|
($mode & 2) && open(STDERR, ">>&", "OLD_STDERR");
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
#
|
|
# read_config(filename)
|
|
#
|
|
# Read configuration file FILENAME and return a reference to a hash containing
|
|
# all valid key=value pairs found.
|
|
#
|
|
|
|
sub read_config($)
|
|
{
|
|
my $filename = $_[0];
|
|
my %result;
|
|
my $key;
|
|
my $value;
|
|
local *HANDLE;
|
|
|
|
if (!open(HANDLE, "<", $filename))
|
|
{
|
|
warn("WARNING: cannot read configuration file $filename\n");
|
|
return undef;
|
|
}
|
|
while (<HANDLE>)
|
|
{
|
|
chomp;
|
|
# Skip comments
|
|
s/#.*//;
|
|
# Remove leading blanks
|
|
s/^\s+//;
|
|
# Remove trailing blanks
|
|
s/\s+$//;
|
|
next unless length;
|
|
($key, $value) = split(/\s*=\s*/, $_, 2);
|
|
if (defined($key) && defined($value))
|
|
{
|
|
$result{$key} = $value;
|
|
}
|
|
else
|
|
{
|
|
warn("WARNING: malformed statement in line $. ".
|
|
"of configuration file $filename\n");
|
|
}
|
|
}
|
|
close(HANDLE);
|
|
return \%result;
|
|
}
|
|
|
|
|
|
#
|
|
# apply_config(REF)
|
|
#
|
|
# REF is a reference to a hash containing the following mapping:
|
|
#
|
|
# key_string => var_ref
|
|
#
|
|
# where KEY_STRING is a keyword and VAR_REF is a reference to an associated
|
|
# variable. If the global configuration hashes CONFIG or OPT_RC contain a value
|
|
# for keyword KEY_STRING, VAR_REF will be assigned the value for that keyword.
|
|
#
|
|
|
|
sub apply_config($)
|
|
{
|
|
my $ref = $_[0];
|
|
|
|
foreach (keys(%{$ref}))
|
|
{
|
|
if (defined($opt_rc{$_})) {
|
|
${$ref->{$_}} = $opt_rc{$_};
|
|
} elsif (defined($config->{$_})) {
|
|
${$ref->{$_}} = $config->{$_};
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#
|
|
# get_exclusion_data(filename)
|
|
#
|
|
# Scan specified source code file for exclusion markers and return
|
|
# linenumber -> 1
|
|
# for all lines which should be excluded.
|
|
#
|
|
|
|
sub get_exclusion_data($)
|
|
{
|
|
my ($filename) = @_;
|
|
my %list;
|
|
my $flag = 0;
|
|
local *HANDLE;
|
|
|
|
if (!open(HANDLE, "<", $filename)) {
|
|
warn("WARNING: could not open $filename\n");
|
|
return undef;
|
|
}
|
|
while (<HANDLE>) {
|
|
if (/$EXCL_STOP/) {
|
|
$flag = 0;
|
|
} elsif (/$EXCL_START/) {
|
|
$flag = 1;
|
|
}
|
|
if (/$EXCL_LINE/ || $flag) {
|
|
$list{$.} = 1;
|
|
}
|
|
}
|
|
close(HANDLE);
|
|
|
|
if ($flag) {
|
|
warn("WARNING: unterminated exclusion section in $filename\n");
|
|
}
|
|
|
|
return \%list;
|
|
}
|
|
|
|
|
|
#
|
|
# apply_exclusion_data(instr, graph)
|
|
#
|
|
# Remove lines from instr and graph data structures which are marked
|
|
# for exclusion in the source code file.
|
|
#
|
|
# Return adjusted (instr, graph).
|
|
#
|
|
# graph : file name -> function data
|
|
# function data : function name -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
# instr : filename -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
|
|
sub apply_exclusion_data($$)
|
|
{
|
|
my ($instr, $graph) = @_;
|
|
my $filename;
|
|
my %excl_data;
|
|
my $excl_read_failed = 0;
|
|
|
|
# Collect exclusion marker data
|
|
foreach $filename (sort_uniq_lex(keys(%{$graph}), keys(%{$instr}))) {
|
|
my $excl = get_exclusion_data($filename);
|
|
|
|
# Skip and note if file could not be read
|
|
if (!defined($excl)) {
|
|
$excl_read_failed = 1;
|
|
next;
|
|
}
|
|
|
|
# Add to collection if there are markers
|
|
$excl_data{$filename} = $excl if (keys(%{$excl}) > 0);
|
|
}
|
|
|
|
# Warn if not all source files could be read
|
|
if ($excl_read_failed) {
|
|
warn("WARNING: some exclusion markers may be ignored\n");
|
|
}
|
|
|
|
# Skip if no markers were found
|
|
return ($instr, $graph) if (keys(%excl_data) == 0);
|
|
|
|
# Apply exclusion marker data to graph
|
|
foreach $filename (keys(%excl_data)) {
|
|
my $function_data = $graph->{$filename};
|
|
my $excl = $excl_data{$filename};
|
|
my $function;
|
|
|
|
next if (!defined($function_data));
|
|
|
|
foreach $function (keys(%{$function_data})) {
|
|
my $line_data = $function_data->{$function};
|
|
my $line;
|
|
my @new_data;
|
|
|
|
# To be consistent with exclusion parser in non-initial
|
|
# case we need to remove a function if the first line
|
|
# was excluded
|
|
if ($excl->{$line_data->[0]}) {
|
|
delete($function_data->{$function});
|
|
next;
|
|
}
|
|
# Copy only lines which are not excluded
|
|
foreach $line (@{$line_data}) {
|
|
push(@new_data, $line) if (!$excl->{$line});
|
|
}
|
|
|
|
# Store modified list
|
|
if (scalar(@new_data) > 0) {
|
|
$function_data->{$function} = \@new_data;
|
|
} else {
|
|
# All of this function was excluded
|
|
delete($function_data->{$function});
|
|
}
|
|
}
|
|
|
|
# Check if all functions of this file were excluded
|
|
if (keys(%{$function_data}) == 0) {
|
|
delete($graph->{$filename});
|
|
}
|
|
}
|
|
|
|
# Apply exclusion marker data to instr
|
|
foreach $filename (keys(%excl_data)) {
|
|
my $line_data = $instr->{$filename};
|
|
my $excl = $excl_data{$filename};
|
|
my $line;
|
|
my @new_data;
|
|
|
|
next if (!defined($line_data));
|
|
|
|
# Copy only lines which are not excluded
|
|
foreach $line (@{$line_data}) {
|
|
push(@new_data, $line) if (!$excl->{$line});
|
|
}
|
|
|
|
# Store modified list
|
|
$instr->{$filename} = \@new_data;
|
|
}
|
|
|
|
return ($instr, $graph);
|
|
}
|
|
|
|
|
|
sub process_graphfile($$)
|
|
{
|
|
my ($file, $dir) = @_;
|
|
my $graph_filename = $file;
|
|
my $graph_dir;
|
|
my $graph_basename;
|
|
my $source_dir;
|
|
my $base_dir;
|
|
my $graph;
|
|
my $instr;
|
|
my $filename;
|
|
local *INFO_HANDLE;
|
|
|
|
info("Processing %s\n", abs2rel($file, $dir));
|
|
|
|
# Get path to data file in absolute and normalized form (begins with /,
|
|
# contains no more ../ or ./)
|
|
$graph_filename = solve_relative_path($cwd, $graph_filename);
|
|
|
|
# Get directory and basename of data file
|
|
($graph_dir, $graph_basename) = split_filename($graph_filename);
|
|
|
|
$source_dir = $graph_dir;
|
|
if (is_compat($COMPAT_MODE_LIBTOOL)) {
|
|
# Avoid files from .libs dirs
|
|
$source_dir =~ s/\.libs$//;
|
|
}
|
|
|
|
# Construct base_dir for current file
|
|
if ($base_directory)
|
|
{
|
|
$base_dir = $base_directory;
|
|
}
|
|
else
|
|
{
|
|
$base_dir = $source_dir;
|
|
}
|
|
|
|
if ($gcov_version < $GCOV_VERSION_3_4_0)
|
|
{
|
|
if (is_compat($COMPAT_MODE_HAMMER))
|
|
{
|
|
($instr, $graph) = read_bbg($graph_filename);
|
|
}
|
|
else
|
|
{
|
|
($instr, $graph) = read_bb($graph_filename);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
($instr, $graph) = read_gcno($graph_filename);
|
|
}
|
|
|
|
# Try to find base directory automatically if requested by user
|
|
if ($rc_auto_base) {
|
|
$base_dir = find_base_from_graph($base_dir, $instr, $graph);
|
|
}
|
|
|
|
($instr, $graph) = adjust_graph_filenames($base_dir, $instr, $graph);
|
|
|
|
if (!$no_markers) {
|
|
# Apply exclusion marker data to graph file data
|
|
($instr, $graph) = apply_exclusion_data($instr, $graph);
|
|
}
|
|
|
|
# Check whether we're writing to a single file
|
|
if ($output_filename)
|
|
{
|
|
if ($output_filename eq "-")
|
|
{
|
|
*INFO_HANDLE = *STDOUT;
|
|
}
|
|
else
|
|
{
|
|
# Append to output file
|
|
open(INFO_HANDLE, ">>", $output_filename)
|
|
or die("ERROR: cannot write to ".
|
|
"$output_filename!\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
# Open .info file for output
|
|
open(INFO_HANDLE, ">", "$graph_filename.info")
|
|
or die("ERROR: cannot create $graph_filename.info!\n");
|
|
}
|
|
|
|
# Write test name
|
|
printf(INFO_HANDLE "TN:%s\n", $test_name);
|
|
foreach $filename (sort(keys(%{$instr})))
|
|
{
|
|
my $funcdata = $graph->{$filename};
|
|
my $line;
|
|
my $linedata;
|
|
|
|
print(INFO_HANDLE "SF:$filename\n");
|
|
|
|
if (defined($funcdata) && $func_coverage) {
|
|
my @functions = sort {$funcdata->{$a}->[0] <=>
|
|
$funcdata->{$b}->[0]}
|
|
keys(%{$funcdata});
|
|
my $func;
|
|
|
|
# Gather list of instrumented lines and functions
|
|
foreach $func (@functions) {
|
|
$linedata = $funcdata->{$func};
|
|
|
|
# Print function name and starting line
|
|
print(INFO_HANDLE "FN:".$linedata->[0].
|
|
",".filter_fn_name($func)."\n");
|
|
}
|
|
# Print zero function coverage data
|
|
foreach $func (@functions) {
|
|
print(INFO_HANDLE "FNDA:0,".
|
|
filter_fn_name($func)."\n");
|
|
}
|
|
# Print function summary
|
|
print(INFO_HANDLE "FNF:".scalar(@functions)."\n");
|
|
print(INFO_HANDLE "FNH:0\n");
|
|
}
|
|
# Print zero line coverage data
|
|
foreach $line (@{$instr->{$filename}}) {
|
|
print(INFO_HANDLE "DA:$line,0\n");
|
|
}
|
|
# Print line summary
|
|
print(INFO_HANDLE "LF:".scalar(@{$instr->{$filename}})."\n");
|
|
print(INFO_HANDLE "LH:0\n");
|
|
|
|
print(INFO_HANDLE "end_of_record\n");
|
|
}
|
|
if (!($output_filename && ($output_filename eq "-")))
|
|
{
|
|
close(INFO_HANDLE);
|
|
}
|
|
}
|
|
|
|
sub filter_fn_name($)
|
|
{
|
|
my ($fn) = @_;
|
|
|
|
# Remove characters used internally as function name delimiters
|
|
$fn =~ s/[,=]/_/g;
|
|
|
|
return $fn;
|
|
}
|
|
|
|
sub warn_handler($)
|
|
{
|
|
my ($msg) = @_;
|
|
|
|
warn("$tool_name: $msg");
|
|
}
|
|
|
|
sub die_handler($)
|
|
{
|
|
my ($msg) = @_;
|
|
|
|
die("$tool_name: $msg");
|
|
}
|
|
|
|
|
|
#
|
|
# graph_error(filename, message)
|
|
#
|
|
# Print message about error in graph file. If ignore_graph_error is set, return.
|
|
# Otherwise abort.
|
|
#
|
|
|
|
sub graph_error($$)
|
|
{
|
|
my ($filename, $msg) = @_;
|
|
|
|
if ($ignore[$ERROR_GRAPH]) {
|
|
warn("WARNING: $filename: $msg - skipping\n");
|
|
return;
|
|
}
|
|
die("ERROR: $filename: $msg\n");
|
|
}
|
|
|
|
#
|
|
# graph_expect(description)
|
|
#
|
|
# If debug is set to a non-zero value, print the specified description of what
|
|
# is expected to be read next from the graph file.
|
|
#
|
|
|
|
sub graph_expect($)
|
|
{
|
|
my ($msg) = @_;
|
|
|
|
if (!$debug || !defined($msg)) {
|
|
return;
|
|
}
|
|
|
|
print(STDERR "DEBUG: expecting $msg\n");
|
|
}
|
|
|
|
#
|
|
# graph_read(handle, bytes[, description, peek])
|
|
#
|
|
# Read and return the specified number of bytes from handle. Return undef
|
|
# if the number of bytes could not be read. If PEEK is non-zero, reset
|
|
# file position after read.
|
|
#
|
|
|
|
sub graph_read(*$;$$)
|
|
{
|
|
my ($handle, $length, $desc, $peek) = @_;
|
|
my $data;
|
|
my $result;
|
|
my $pos;
|
|
|
|
graph_expect($desc);
|
|
if ($peek) {
|
|
$pos = tell($handle);
|
|
if ($pos == -1) {
|
|
warn("Could not get current file position: $!\n");
|
|
return undef;
|
|
}
|
|
}
|
|
$result = read($handle, $data, $length);
|
|
if ($debug) {
|
|
my $op = $peek ? "peek" : "read";
|
|
my $ascii = "";
|
|
my $hex = "";
|
|
my $i;
|
|
|
|
print(STDERR "DEBUG: $op($length)=$result: ");
|
|
for ($i = 0; $i < length($data); $i++) {
|
|
my $c = substr($data, $i, 1);;
|
|
my $n = ord($c);
|
|
|
|
$hex .= sprintf("%02x ", $n);
|
|
if ($n >= 32 && $n <= 127) {
|
|
$ascii .= $c;
|
|
} else {
|
|
$ascii .= ".";
|
|
}
|
|
}
|
|
print(STDERR "$hex |$ascii|");
|
|
print(STDERR "\n");
|
|
}
|
|
if ($peek) {
|
|
if (!seek($handle, $pos, 0)) {
|
|
warn("Could not set file position: $!\n");
|
|
return undef;
|
|
}
|
|
}
|
|
if ($result != $length) {
|
|
return undef;
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
#
|
|
# graph_skip(handle, bytes[, description])
|
|
#
|
|
# Read and discard the specified number of bytes from handle. Return non-zero
|
|
# if bytes could be read, zero otherwise.
|
|
#
|
|
|
|
sub graph_skip(*$;$)
|
|
{
|
|
my ($handle, $length, $desc) = @_;
|
|
|
|
if (defined(graph_read($handle, $length, $desc))) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# sort_uniq(list)
|
|
#
|
|
# Return list in numerically ascending order and without duplicate entries.
|
|
#
|
|
|
|
sub sort_uniq(@)
|
|
{
|
|
my (@list) = @_;
|
|
my %hash;
|
|
|
|
foreach (@list) {
|
|
$hash{$_} = 1;
|
|
}
|
|
return sort { $a <=> $b } keys(%hash);
|
|
}
|
|
|
|
#
|
|
# sort_uniq_lex(list)
|
|
#
|
|
# Return list in lexically ascending order and without duplicate entries.
|
|
#
|
|
|
|
sub sort_uniq_lex(@)
|
|
{
|
|
my (@list) = @_;
|
|
my %hash;
|
|
|
|
foreach (@list) {
|
|
$hash{$_} = 1;
|
|
}
|
|
return sort keys(%hash);
|
|
}
|
|
|
|
#
|
|
# parent_dir(dir)
|
|
#
|
|
# Return parent directory for DIR. DIR must not contain relative path
|
|
# components.
|
|
#
|
|
|
|
sub parent_dir($)
|
|
{
|
|
my ($dir) = @_;
|
|
my ($v, $d, $f) = splitpath($dir, 1);
|
|
my @dirs = splitdir($d);
|
|
|
|
pop(@dirs);
|
|
|
|
return catpath($v, catdir(@dirs), $f);
|
|
}
|
|
|
|
#
|
|
# find_base_from_graph(base_dir, instr, graph)
|
|
#
|
|
# Try to determine the base directory of the graph file specified by INSTR
|
|
# and GRAPH. The base directory is the base for all relative filenames in
|
|
# the graph file. It is defined by the current working directory at time
|
|
# of compiling the source file.
|
|
#
|
|
# This function implements a heuristic which relies on the following
|
|
# assumptions:
|
|
# - all files used for compilation are still present at their location
|
|
# - the base directory is either BASE_DIR or one of its parent directories
|
|
# - files by the same name are not present in multiple parent directories
|
|
#
|
|
|
|
sub find_base_from_graph($$$)
|
|
{
|
|
my ($base_dir, $instr, $graph) = @_;
|
|
my $old_base;
|
|
my $best_miss;
|
|
my $best_base;
|
|
my %rel_files;
|
|
|
|
# Determine list of relative paths
|
|
foreach my $filename (keys(%{$instr}), keys(%{$graph})) {
|
|
next if (file_name_is_absolute($filename));
|
|
|
|
$rel_files{$filename} = 1;
|
|
}
|
|
|
|
# Early exit if there are no relative paths
|
|
return $base_dir if (!%rel_files);
|
|
|
|
do {
|
|
my $miss = 0;
|
|
|
|
foreach my $filename (keys(%rel_files)) {
|
|
if (!-e solve_relative_path($base_dir, $filename)) {
|
|
$miss++;
|
|
}
|
|
}
|
|
|
|
debug("base_dir=$base_dir miss=$miss\n");
|
|
|
|
# Exit if we find an exact match with no misses
|
|
return $base_dir if ($miss == 0);
|
|
|
|
# No exact match, aim for the one with the least source file
|
|
# misses
|
|
if (!defined($best_base) || $miss < $best_miss) {
|
|
$best_base = $base_dir;
|
|
$best_miss = $miss;
|
|
}
|
|
|
|
# Repeat until there's no more parent directory
|
|
$old_base = $base_dir;
|
|
$base_dir = parent_dir($base_dir);
|
|
} while ($old_base ne $base_dir);
|
|
|
|
return $best_base;
|
|
}
|
|
|
|
#
|
|
# adjust_graph_filenames(base_dir, instr, graph)
|
|
#
|
|
# Make relative paths in INSTR and GRAPH absolute and apply
|
|
# geninfo_adjust_src_path setting to graph file data.
|
|
#
|
|
|
|
sub adjust_graph_filenames($$$)
|
|
{
|
|
my ($base_dir, $instr, $graph) = @_;
|
|
|
|
foreach my $filename (keys(%{$instr})) {
|
|
my $old_filename = $filename;
|
|
|
|
# Convert to absolute canonical form
|
|
$filename = solve_relative_path($base_dir, $filename);
|
|
|
|
# Apply adjustment
|
|
if (defined($adjust_src_pattern)) {
|
|
$filename =~ s/$adjust_src_pattern/$adjust_src_replace/g;
|
|
}
|
|
|
|
if ($filename ne $old_filename) {
|
|
$instr->{$filename} = delete($instr->{$old_filename});
|
|
}
|
|
}
|
|
|
|
foreach my $filename (keys(%{$graph})) {
|
|
my $old_filename = $filename;
|
|
|
|
# Make absolute
|
|
# Convert to absolute canonical form
|
|
$filename = solve_relative_path($base_dir, $filename);
|
|
|
|
# Apply adjustment
|
|
if (defined($adjust_src_pattern)) {
|
|
$filename =~ s/$adjust_src_pattern/$adjust_src_replace/g;
|
|
}
|
|
|
|
if ($filename ne $old_filename) {
|
|
$graph->{$filename} = delete($graph->{$old_filename});
|
|
}
|
|
}
|
|
|
|
return ($instr, $graph);
|
|
}
|
|
|
|
#
|
|
# graph_cleanup(graph)
|
|
#
|
|
# Remove entries for functions with no lines. Remove duplicate line numbers.
|
|
# Sort list of line numbers numerically ascending.
|
|
#
|
|
|
|
sub graph_cleanup($)
|
|
{
|
|
my ($graph) = @_;
|
|
my $filename;
|
|
|
|
foreach $filename (keys(%{$graph})) {
|
|
my $per_file = $graph->{$filename};
|
|
my $function;
|
|
|
|
foreach $function (keys(%{$per_file})) {
|
|
my $lines = $per_file->{$function};
|
|
|
|
if (scalar(@$lines) == 0) {
|
|
# Remove empty function
|
|
delete($per_file->{$function});
|
|
next;
|
|
}
|
|
# Normalize list
|
|
$per_file->{$function} = [ sort_uniq(@$lines) ];
|
|
}
|
|
if (scalar(keys(%{$per_file})) == 0) {
|
|
# Remove empty file
|
|
delete($graph->{$filename});
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
# graph_find_base(bb)
|
|
#
|
|
# Try to identify the filename which is the base source file for the
|
|
# specified bb data.
|
|
#
|
|
|
|
sub graph_find_base($)
|
|
{
|
|
my ($bb) = @_;
|
|
my %file_count;
|
|
my $basefile;
|
|
my $file;
|
|
my $func;
|
|
my $filedata;
|
|
my $count;
|
|
my $num;
|
|
|
|
# Identify base name for this bb data.
|
|
foreach $func (keys(%{$bb})) {
|
|
$filedata = $bb->{$func};
|
|
|
|
foreach $file (keys(%{$filedata})) {
|
|
$count = $file_count{$file};
|
|
|
|
# Count file occurrence
|
|
$file_count{$file} = defined($count) ? $count + 1 : 1;
|
|
}
|
|
}
|
|
$count = 0;
|
|
$num = 0;
|
|
foreach $file (keys(%file_count)) {
|
|
if ($file_count{$file} > $count) {
|
|
# The file that contains code for the most functions
|
|
# is likely the base file
|
|
$count = $file_count{$file};
|
|
$num = 1;
|
|
$basefile = $file;
|
|
} elsif ($file_count{$file} == $count) {
|
|
# If more than one file could be the basefile, we
|
|
# don't have a basefile
|
|
$basefile = undef;
|
|
}
|
|
}
|
|
|
|
return $basefile;
|
|
}
|
|
|
|
#
|
|
# graph_from_bb(bb, fileorder, bb_filename)
|
|
#
|
|
# Convert data from bb to the graph format and list of instrumented lines.
|
|
# Returns (instr, graph).
|
|
#
|
|
# bb : function name -> file data
|
|
# : undef -> file order
|
|
# file data : filename -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
# file order : function name -> [ filename1, filename2, ... ]
|
|
#
|
|
# graph : file name -> function data
|
|
# function data : function name -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
# instr : filename -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
|
|
sub graph_from_bb($$$)
|
|
{
|
|
my ($bb, $fileorder, $bb_filename) = @_;
|
|
my $graph = {};
|
|
my $instr = {};
|
|
my $basefile;
|
|
my $file;
|
|
my $func;
|
|
my $filedata;
|
|
my $linedata;
|
|
my $order;
|
|
|
|
$basefile = graph_find_base($bb);
|
|
# Create graph structure
|
|
foreach $func (keys(%{$bb})) {
|
|
$filedata = $bb->{$func};
|
|
$order = $fileorder->{$func};
|
|
|
|
# Account for lines in functions
|
|
if (defined($basefile) && defined($filedata->{$basefile})) {
|
|
# If the basefile contributes to this function,
|
|
# account this function to the basefile.
|
|
$graph->{$basefile}->{$func} = $filedata->{$basefile};
|
|
} else {
|
|
# If the basefile does not contribute to this function,
|
|
# account this function to the first file contributing
|
|
# lines.
|
|
$graph->{$order->[0]}->{$func} =
|
|
$filedata->{$order->[0]};
|
|
}
|
|
|
|
foreach $file (keys(%{$filedata})) {
|
|
# Account for instrumented lines
|
|
$linedata = $filedata->{$file};
|
|
push(@{$instr->{$file}}, @$linedata);
|
|
}
|
|
}
|
|
# Clean up array of instrumented lines
|
|
foreach $file (keys(%{$instr})) {
|
|
$instr->{$file} = [ sort_uniq(@{$instr->{$file}}) ];
|
|
}
|
|
|
|
return ($instr, $graph);
|
|
}
|
|
|
|
#
|
|
# graph_add_order(fileorder, function, filename)
|
|
#
|
|
# Add an entry for filename to the fileorder data set for function.
|
|
#
|
|
|
|
sub graph_add_order($$$)
|
|
{
|
|
my ($fileorder, $function, $filename) = @_;
|
|
my $item;
|
|
my $list;
|
|
|
|
$list = $fileorder->{$function};
|
|
foreach $item (@$list) {
|
|
if ($item eq $filename) {
|
|
return;
|
|
}
|
|
}
|
|
push(@$list, $filename);
|
|
$fileorder->{$function} = $list;
|
|
}
|
|
|
|
#
|
|
# read_bb_word(handle[, description])
|
|
#
|
|
# Read and return a word in .bb format from handle.
|
|
#
|
|
|
|
sub read_bb_word(*;$)
|
|
{
|
|
my ($handle, $desc) = @_;
|
|
|
|
return graph_read($handle, 4, $desc);
|
|
}
|
|
|
|
#
|
|
# read_bb_value(handle[, description])
|
|
#
|
|
# Read a word in .bb format from handle and return the word and its integer
|
|
# value.
|
|
#
|
|
|
|
sub read_bb_value(*;$)
|
|
{
|
|
my ($handle, $desc) = @_;
|
|
my $word;
|
|
|
|
$word = read_bb_word($handle, $desc);
|
|
return undef if (!defined($word));
|
|
|
|
return ($word, unpack("V", $word));
|
|
}
|
|
|
|
#
|
|
# read_bb_string(handle, delimiter)
|
|
#
|
|
# Read and return a string in .bb format from handle up to the specified
|
|
# delimiter value.
|
|
#
|
|
|
|
sub read_bb_string(*$)
|
|
{
|
|
my ($handle, $delimiter) = @_;
|
|
my $word;
|
|
my $value;
|
|
my $string = "";
|
|
|
|
graph_expect("string");
|
|
do {
|
|
($word, $value) = read_bb_value($handle, "string or delimiter");
|
|
return undef if (!defined($value));
|
|
if ($value != $delimiter) {
|
|
$string .= $word;
|
|
}
|
|
} while ($value != $delimiter);
|
|
$string =~ s/\0//g;
|
|
|
|
return $string;
|
|
}
|
|
|
|
#
|
|
# read_bb(filename)
|
|
#
|
|
# Read the contents of the specified .bb file and return (instr, graph), where:
|
|
#
|
|
# instr : filename -> line data
|
|
# line data : [ line1, line2, ... ]
|
|
#
|
|
# graph : filename -> file_data
|
|
# file_data : function name -> line_data
|
|
# line_data : [ line1, line2, ... ]
|
|
#
|
|
# See the gcov info pages of gcc 2.95 for a description of the .bb file format.
|
|
#
|
|
|
|
sub read_bb($)
|
|
{
|
|
my ($bb_filename) = @_;
|
|
my $minus_one = 0x80000001;
|
|
my $minus_two = 0x80000002;
|
|
my $value;
|
|
my $filename;
|
|
my $function;
|
|
my $bb = {};
|
|
my $fileorder = {};
|
|
my $instr;
|
|
my $graph;
|
|
local *HANDLE;
|
|
|
|
open(HANDLE, "<", $bb_filename) or goto open_error;
|
|
binmode(HANDLE);
|
|
while (!eof(HANDLE)) {
|
|
$value = read_bb_value(*HANDLE, "data word");
|
|
goto incomplete if (!defined($value));
|
|
if ($value == $minus_one) {
|
|
# Source file name
|
|
graph_expect("filename");
|
|
$filename = read_bb_string(*HANDLE, $minus_one);
|
|
goto incomplete if (!defined($filename));
|
|
} elsif ($value == $minus_two) {
|
|
# Function name
|
|
graph_expect("function name");
|
|
$function = read_bb_string(*HANDLE, $minus_two);
|
|
goto incomplete if (!defined($function));
|
|
} elsif ($value > 0) {
|
|
# Line number
|
|
if (!defined($filename) || !defined($function)) {
|
|
warn("WARNING: unassigned line number ".
|
|
"$value\n");
|
|
next;
|
|
}
|
|
push(@{$bb->{$function}->{$filename}}, $value);
|
|
graph_add_order($fileorder, $function, $filename);
|
|
}
|
|
}
|
|
close(HANDLE);
|
|
($instr, $graph) = graph_from_bb($bb, $fileorder, $bb_filename);
|
|
graph_cleanup($graph);
|
|
|
|
return ($instr, $graph);
|
|
|
|
open_error:
|
|
graph_error($bb_filename, "could not open file");
|
|
return undef;
|
|
incomplete:
|
|
graph_error($bb_filename, "reached unexpected end of file");
|
|
return undef;
|
|
}
|
|
|
|
#
|
|
# read_bbg_word(handle[, description])
|
|
#
|
|
# Read and return a word in .bbg format.
|
|
#
|
|
|
|
sub read_bbg_word(*;$)
|
|
{
|
|
my ($handle, $desc) = @_;
|
|
|
|
return graph_read($handle, 4, $desc);
|
|
}
|
|
|
|
#
|
|
# read_bbg_value(handle[, description])
|
|
#
|
|
# Read a word in .bbg format from handle and return its integer value.
|
|
#
|
|
|
|
sub read_bbg_value(*;$)
|
|
{
|
|
my ($handle, $desc) = @_;
|
|
my $word;
|
|
|
|
$word = read_bbg_word($handle, $desc);
|
|
return undef if (!defined($word));
|
|
|
|
return unpack("N", $word);
|
|
}
|
|
|
|
#
|
|
# read_bbg_string(handle)
|
|
#
|
|
# Read and return a string in .bbg format.
|
|
#
|
|
|
|
sub read_bbg_string(*)
|
|
{
|
|
my ($handle, $desc) = @_;
|
|
my $length;
|
|
my $string;
|
|
|
|
graph_expect("string");
|
|
# Read string length
|
|
$length = read_bbg_value($handle, "string length");
|
|
return undef if (!defined($length));
|
|
if ($length == 0) {
|
|
return "";
|
|
}
|
|
# Read string
|
|
$string = graph_read($handle, $length, "string");
|
|
return undef if (!defined($string));
|
|
# Skip padding
|
|
graph_skip($handle, 4 - $length % 4, "string padding") or return undef;
|
|
|
|
return $string;
|
|
}
|
|
|
|
#
|
|
# read_bbg_lines_record(handle, bbg_filename, bb, fileorder, filename,
|
|
# function)
|
|
#
|
|
# Read a bbg format lines record from handle and add the relevant data to
|
|
# bb and fileorder. Return filename on success, undef on error.
|
|
#
|
|
|
|
sub read_bbg_lines_record(*$$$$$)
|
|
{
|
|
my ($handle, $bbg_filename, $bb, $fileorder, $filename, $function) = @_;
|
|
my $string;
|
|
my $lineno;
|
|
|
|
graph_expect("lines record");
|
|
# Skip basic block index
|
|
graph_skip($handle, 4, "basic block index") or return undef;
|
|
while (1) {
|
|
# Read line number
|
|
$lineno = read_bbg_value($handle, "line number");
|
|
return undef if (!defined($lineno));
|
|
if ($lineno == 0) {
|
|
# Got a marker for a new filename
|
|
graph_expect("filename");
|
|
$string = read_bbg_string($handle);
|
|
return undef if (!defined($string));
|
|
# Check for end of record
|
|
if ($string eq "") {
|
|
return $filename;
|
|
}
|
|
$filename = $string;
|
|
if (!exists($bb->{$function}->{$filename})) {
|
|
$bb->{$function}->{$filename} = [];
|
|
}
|
|
next;
|
|
}
|
|
# Got an actual line number
|
|
if (!defined($filename)) {
|
|
warn("WARNING: unassigned line number in ".
|
|
"$bbg_filename\n");
|
|
next;
|
|
}
|
|
push(@{$bb->{$function}->{$filename}}, $lineno);
|
|
graph_add_order($fileorder, $function, $filename);
|
|
}
|
|
}
|
|
|
|
#
|
|
# read_bbg(filename)
|
|
#
|
|
# Read the contents of the specified .bbg file and return the following mapping:
|
|
# graph: filename -> file_data
|
|
# file_data: function name -> line_data
|
|
# line_data: [ line1, line2, ... ]
|
|
#
|
|
# See the gcov-io.h file in the SLES 9 gcc 3.3.3 source code for a description
|
|
# of the .bbg format.
|
|
#
|
|
|
|
sub read_bbg($)
|
|
{
|
|
my ($bbg_filename) = @_;
|
|
my $file_magic = 0x67626267;
|
|
my $tag_function = 0x01000000;
|
|
my $tag_lines = 0x01450000;
|
|
my $word;
|
|
my $tag;
|
|
my $length;
|
|
my $function;
|
|
my $filename;
|
|
my $bb = {};
|
|
my $fileorder = {};
|
|
my $instr;
|
|
my $graph;
|
|
local *HANDLE;
|
|
|
|
open(HANDLE, "<", $bbg_filename) or goto open_error;
|
|
binmode(HANDLE);
|
|
# Read magic
|
|
$word = read_bbg_value(*HANDLE, "file magic");
|
|
goto incomplete if (!defined($word));
|
|
# Check magic
|
|
if ($word != $file_magic) {
|
|
goto magic_error;
|
|
}
|
|
# Skip version
|
|
graph_skip(*HANDLE, 4, "version") or goto incomplete;
|
|
while (!eof(HANDLE)) {
|
|
# Read record tag
|
|
$tag = read_bbg_value(*HANDLE, "record tag");
|
|
goto incomplete if (!defined($tag));
|
|
# Read record length
|
|
$length = read_bbg_value(*HANDLE, "record length");
|
|
goto incomplete if (!defined($tag));
|
|
if ($tag == $tag_function) {
|
|
graph_expect("function record");
|
|
# Read function name
|
|
graph_expect("function name");
|
|
$function = read_bbg_string(*HANDLE);
|
|
goto incomplete if (!defined($function));
|
|
$filename = undef;
|
|
# Skip function checksum
|
|
graph_skip(*HANDLE, 4, "function checksum")
|
|
or goto incomplete;
|
|
} elsif ($tag == $tag_lines) {
|
|
# Read lines record
|
|
$filename = read_bbg_lines_record(HANDLE, $bbg_filename,
|
|
$bb, $fileorder, $filename,
|
|
$function);
|
|
goto incomplete if (!defined($filename));
|
|
} else {
|
|
# Skip record contents
|
|
graph_skip(*HANDLE, $length, "unhandled record")
|
|
or goto incomplete;
|
|
}
|
|
}
|
|
close(HANDLE);
|
|
($instr, $graph) = graph_from_bb($bb, $fileorder, $bbg_filename);
|
|
graph_cleanup($graph);
|
|
|
|
return ($instr, $graph);
|
|
|
|
open_error:
|
|
graph_error($bbg_filename, "could not open file");
|
|
return undef;
|
|
incomplete:
|
|
graph_error($bbg_filename, "reached unexpected end of file");
|
|
return undef;
|
|
magic_error:
|
|
graph_error($bbg_filename, "found unrecognized bbg file magic");
|
|
return undef;
|
|
}
|
|
|
|
#
|
|
# read_gcno_word(handle[, description, peek])
|
|
#
|
|
# Read and return a word in .gcno format.
|
|
#
|
|
|
|
sub read_gcno_word(*;$$)
|
|
{
|
|
my ($handle, $desc, $peek) = @_;
|
|
|
|
return graph_read($handle, 4, $desc, $peek);
|
|
}
|
|
|
|
#
|
|
# read_gcno_value(handle, big_endian[, description, peek])
|
|
#
|
|
# Read a word in .gcno format from handle and return its integer value
|
|
# according to the specified endianness. If PEEK is non-zero, reset file
|
|
# position after read.
|
|
#
|
|
|
|
sub read_gcno_value(*$;$$)
|
|
{
|
|
my ($handle, $big_endian, $desc, $peek) = @_;
|
|
my $word;
|
|
my $pos;
|
|
|
|
$word = read_gcno_word($handle, $desc, $peek);
|
|
return undef if (!defined($word));
|
|
if ($big_endian) {
|
|
return unpack("N", $word);
|
|
} else {
|
|
return unpack("V", $word);
|
|
}
|
|
}
|
|
|
|
#
|
|
# read_gcno_string(handle, big_endian)
|
|
#
|
|
# Read and return a string in .gcno format.
|
|
#
|
|
|
|
sub read_gcno_string(*$)
|
|
{
|
|
my ($handle, $big_endian) = @_;
|
|
my $length;
|
|
my $string;
|
|
|
|
graph_expect("string");
|
|
# Read string length
|
|
$length = read_gcno_value($handle, $big_endian, "string length");
|
|
return undef if (!defined($length));
|
|
if ($length == 0) {
|
|
return "";
|
|
}
|
|
$length *= 4;
|
|
# Read string
|
|
$string = graph_read($handle, $length, "string and padding");
|
|
return undef if (!defined($string));
|
|
$string =~ s/\0//g;
|
|
|
|
return $string;
|
|
}
|
|
|
|
#
|
|
# read_gcno_lines_record(handle, gcno_filename, bb, fileorder, filename,
|
|
# function, big_endian)
|
|
#
|
|
# Read a gcno format lines record from handle and add the relevant data to
|
|
# bb and fileorder. Return filename on success, undef on error.
|
|
#
|
|
|
|
sub read_gcno_lines_record(*$$$$$$)
|
|
{
|
|
my ($handle, $gcno_filename, $bb, $fileorder, $filename, $function,
|
|
$big_endian) = @_;
|
|
my $string;
|
|
my $lineno;
|
|
|
|
graph_expect("lines record");
|
|
# Skip basic block index
|
|
graph_skip($handle, 4, "basic block index") or return undef;
|
|
while (1) {
|
|
# Read line number
|
|
$lineno = read_gcno_value($handle, $big_endian, "line number");
|
|
return undef if (!defined($lineno));
|
|
if ($lineno == 0) {
|
|
# Got a marker for a new filename
|
|
graph_expect("filename");
|
|
$string = read_gcno_string($handle, $big_endian);
|
|
return undef if (!defined($string));
|
|
# Check for end of record
|
|
if ($string eq "") {
|
|
return $filename;
|
|
}
|
|
$filename = $string;
|
|
if (!exists($bb->{$function}->{$filename})) {
|
|
$bb->{$function}->{$filename} = [];
|
|
}
|
|
next;
|
|
}
|
|
# Got an actual line number
|
|
if (!defined($filename)) {
|
|
warn("WARNING: unassigned line number in ".
|
|
"$gcno_filename\n");
|
|
next;
|
|
}
|
|
# Add to list
|
|
push(@{$bb->{$function}->{$filename}}, $lineno);
|
|
graph_add_order($fileorder, $function, $filename);
|
|
}
|
|
}
|
|
|
|
#
|
|
# determine_gcno_split_crc(handle, big_endian, rec_length)
|
|
#
|
|
# Determine if HANDLE refers to a .gcno file with a split checksum function
|
|
# record format. Return non-zero in case of split checksum format, zero
|
|
# otherwise, undef in case of read error.
|
|
#
|
|
|
|
sub determine_gcno_split_crc($$$)
|
|
{
|
|
my ($handle, $big_endian, $rec_length) = @_;
|
|
my $strlen;
|
|
my $overlong_string;
|
|
|
|
return 1 if ($gcov_version >= $GCOV_VERSION_4_7_0);
|
|
return 1 if (is_compat($COMPAT_MODE_SPLIT_CRC));
|
|
|
|
# Heuristic:
|
|
# Decide format based on contents of next word in record:
|
|
# - pre-gcc 4.7
|
|
# This is the function name length / 4 which should be
|
|
# less than the remaining record length
|
|
# - gcc 4.7
|
|
# This is a checksum, likely with high-order bits set,
|
|
# resulting in a large number
|
|
$strlen = read_gcno_value($handle, $big_endian, undef, 1);
|
|
return undef if (!defined($strlen));
|
|
$overlong_string = 1 if ($strlen * 4 >= $rec_length - 12);
|
|
|
|
if ($overlong_string) {
|
|
if (is_compat_auto($COMPAT_MODE_SPLIT_CRC)) {
|
|
info("Auto-detected compatibility mode for split ".
|
|
"checksum .gcno file format\n");
|
|
|
|
return 1;
|
|
} else {
|
|
# Sanity check
|
|
warn("Found overlong string in function record: ".
|
|
"try '--compat split_crc'\n");
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# read_gcno_function_record(handle, graph, big_endian, rec_length)
|
|
#
|
|
# Read a gcno format function record from handle and add the relevant data
|
|
# to graph. Return (filename, function) on success, undef on error.
|
|
#
|
|
|
|
sub read_gcno_function_record(*$$$$)
|
|
{
|
|
my ($handle, $bb, $fileorder, $big_endian, $rec_length) = @_;
|
|
my $filename;
|
|
my $function;
|
|
my $lineno;
|
|
my $lines;
|
|
|
|
graph_expect("function record");
|
|
# Skip ident and checksum
|
|
graph_skip($handle, 8, "function ident and checksum") or return undef;
|
|
# Determine if this is a function record with split checksums
|
|
if (!defined($gcno_split_crc)) {
|
|
$gcno_split_crc = determine_gcno_split_crc($handle, $big_endian,
|
|
$rec_length);
|
|
return undef if (!defined($gcno_split_crc));
|
|
}
|
|
# Skip cfg checksum word in case of split checksums
|
|
graph_skip($handle, 4, "function cfg checksum") if ($gcno_split_crc);
|
|
# Read function name
|
|
graph_expect("function name");
|
|
$function = read_gcno_string($handle, $big_endian);
|
|
return undef if (!defined($function));
|
|
# Read filename
|
|
graph_expect("filename");
|
|
$filename = read_gcno_string($handle, $big_endian);
|
|
return undef if (!defined($filename));
|
|
# Read first line number
|
|
$lineno = read_gcno_value($handle, $big_endian, "initial line number");
|
|
return undef if (!defined($lineno));
|
|
# Add to list
|
|
push(@{$bb->{$function}->{$filename}}, $lineno);
|
|
graph_add_order($fileorder, $function, $filename);
|
|
|
|
return ($filename, $function);
|
|
}
|
|
|
|
#
|
|
# read_gcno(filename)
|
|
#
|
|
# Read the contents of the specified .gcno file and return the following
|
|
# mapping:
|
|
# graph: filename -> file_data
|
|
# file_data: function name -> line_data
|
|
# line_data: [ line1, line2, ... ]
|
|
#
|
|
# See the gcov-io.h file in the gcc 3.3 source code for a description of
|
|
# the .gcno format.
|
|
#
|
|
|
|
sub read_gcno($)
|
|
{
|
|
my ($gcno_filename) = @_;
|
|
my $file_magic = 0x67636e6f;
|
|
my $tag_function = 0x01000000;
|
|
my $tag_lines = 0x01450000;
|
|
my $big_endian;
|
|
my $word;
|
|
my $tag;
|
|
my $length;
|
|
my $filename;
|
|
my $function;
|
|
my $bb = {};
|
|
my $fileorder = {};
|
|
my $instr;
|
|
my $graph;
|
|
local *HANDLE;
|
|
|
|
open(HANDLE, "<", $gcno_filename) or goto open_error;
|
|
binmode(HANDLE);
|
|
# Read magic
|
|
$word = read_gcno_word(*HANDLE, "file magic");
|
|
goto incomplete if (!defined($word));
|
|
# Determine file endianness
|
|
if (unpack("N", $word) == $file_magic) {
|
|
$big_endian = 1;
|
|
} elsif (unpack("V", $word) == $file_magic) {
|
|
$big_endian = 0;
|
|
} else {
|
|
goto magic_error;
|
|
}
|
|
# Skip version and stamp
|
|
graph_skip(*HANDLE, 8, "version and stamp") or goto incomplete;
|
|
while (!eof(HANDLE)) {
|
|
my $next_pos;
|
|
my $curr_pos;
|
|
|
|
# Read record tag
|
|
$tag = read_gcno_value(*HANDLE, $big_endian, "record tag");
|
|
goto incomplete if (!defined($tag));
|
|
# Read record length
|
|
$length = read_gcno_value(*HANDLE, $big_endian,
|
|
"record length");
|
|
goto incomplete if (!defined($length));
|
|
# Convert length to bytes
|
|
$length *= 4;
|
|
# Calculate start of next record
|
|
$next_pos = tell(HANDLE);
|
|
goto tell_error if ($next_pos == -1);
|
|
$next_pos += $length;
|
|
# Process record
|
|
if ($tag == $tag_function) {
|
|
($filename, $function) = read_gcno_function_record(
|
|
*HANDLE, $bb, $fileorder, $big_endian,
|
|
$length);
|
|
goto incomplete if (!defined($function));
|
|
} elsif ($tag == $tag_lines) {
|
|
# Read lines record
|
|
$filename = read_gcno_lines_record(*HANDLE,
|
|
$gcno_filename, $bb, $fileorder,
|
|
$filename, $function,
|
|
$big_endian);
|
|
goto incomplete if (!defined($filename));
|
|
} else {
|
|
# Skip record contents
|
|
graph_skip(*HANDLE, $length, "unhandled record")
|
|
or goto incomplete;
|
|
}
|
|
# Ensure that we are at the start of the next record
|
|
$curr_pos = tell(HANDLE);
|
|
goto tell_error if ($curr_pos == -1);
|
|
next if ($curr_pos == $next_pos);
|
|
goto record_error if ($curr_pos > $next_pos);
|
|
graph_skip(*HANDLE, $next_pos - $curr_pos,
|
|
"unhandled record content")
|
|
or goto incomplete;
|
|
}
|
|
close(HANDLE);
|
|
($instr, $graph) = graph_from_bb($bb, $fileorder, $gcno_filename);
|
|
graph_cleanup($graph);
|
|
|
|
return ($instr, $graph);
|
|
|
|
open_error:
|
|
graph_error($gcno_filename, "could not open file");
|
|
return undef;
|
|
incomplete:
|
|
graph_error($gcno_filename, "reached unexpected end of file");
|
|
return undef;
|
|
magic_error:
|
|
graph_error($gcno_filename, "found unrecognized gcno file magic");
|
|
return undef;
|
|
tell_error:
|
|
graph_error($gcno_filename, "could not determine file position");
|
|
return undef;
|
|
record_error:
|
|
graph_error($gcno_filename, "found unrecognized record format");
|
|
return undef;
|
|
}
|
|
|
|
sub debug($)
|
|
{
|
|
my ($msg) = @_;
|
|
|
|
return if (!$debug);
|
|
print(STDERR "DEBUG: $msg");
|
|
}
|
|
|
|
#
|
|
# get_gcov_capabilities
|
|
#
|
|
# Determine the list of available gcov options.
|
|
#
|
|
|
|
sub get_gcov_capabilities()
|
|
{
|
|
my $help = `$gcov_tool --help`;
|
|
my %capabilities;
|
|
|
|
foreach (split(/\n/, $help)) {
|
|
next if (!/--(\S+)/);
|
|
next if ($1 eq 'help');
|
|
next if ($1 eq 'version');
|
|
next if ($1 eq 'object-directory');
|
|
|
|
$capabilities{$1} = 1;
|
|
debug("gcov has capability '$1'\n");
|
|
}
|
|
|
|
return \%capabilities;
|
|
}
|
|
|
|
#
|
|
# parse_ignore_errors(@ignore_errors)
|
|
#
|
|
# Parse user input about which errors to ignore.
|
|
#
|
|
|
|
sub parse_ignore_errors(@)
|
|
{
|
|
my (@ignore_errors) = @_;
|
|
my @items;
|
|
my $item;
|
|
|
|
return if (!@ignore_errors);
|
|
|
|
foreach $item (@ignore_errors) {
|
|
$item =~ s/\s//g;
|
|
if ($item =~ /,/) {
|
|
# Split and add comma-separated parameters
|
|
push(@items, split(/,/, $item));
|
|
} else {
|
|
# Add single parameter
|
|
push(@items, $item);
|
|
}
|
|
}
|
|
foreach $item (@items) {
|
|
my $item_id = $ERROR_ID{lc($item)};
|
|
|
|
if (!defined($item_id)) {
|
|
die("ERROR: unknown argument for --ignore-errors: ".
|
|
"$item\n");
|
|
}
|
|
$ignore[$item_id] = 1;
|
|
}
|
|
}
|
|
|
|
#
|
|
# is_external(filename)
|
|
#
|
|
# Determine if a file is located outside of the specified data directories.
|
|
#
|
|
|
|
sub is_external($)
|
|
{
|
|
my ($filename) = @_;
|
|
my $dir;
|
|
|
|
foreach $dir (@internal_dirs) {
|
|
return 0 if ($filename =~ /^\Q$dir\/\E/);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#
|
|
# compat_name(mode)
|
|
#
|
|
# Return the name of compatibility mode MODE.
|
|
#
|
|
|
|
sub compat_name($)
|
|
{
|
|
my ($mode) = @_;
|
|
my $name = $COMPAT_MODE_TO_NAME{$mode};
|
|
|
|
return $name if (defined($name));
|
|
|
|
return "<unknown>";
|
|
}
|
|
|
|
#
|
|
# parse_compat_modes(opt)
|
|
#
|
|
# Determine compatibility mode settings.
|
|
#
|
|
|
|
sub parse_compat_modes($)
|
|
{
|
|
my ($opt) = @_;
|
|
my @opt_list;
|
|
my %specified;
|
|
|
|
# Initialize with defaults
|
|
%compat_value = %COMPAT_MODE_DEFAULTS;
|
|
|
|
# Add old style specifications
|
|
if (defined($opt_compat_libtool)) {
|
|
$compat_value{$COMPAT_MODE_LIBTOOL} =
|
|
$opt_compat_libtool ? $COMPAT_VALUE_ON
|
|
: $COMPAT_VALUE_OFF;
|
|
}
|
|
|
|
# Parse settings
|
|
if (defined($opt)) {
|
|
@opt_list = split(/\s*,\s*/, $opt);
|
|
}
|
|
foreach my $directive (@opt_list) {
|
|
my ($mode, $value);
|
|
|
|
# Either
|
|
# mode=off|on|auto or
|
|
# mode (implies on)
|
|
if ($directive !~ /^(\w+)=(\w+)$/ &&
|
|
$directive !~ /^(\w+)$/) {
|
|
die("ERROR: Unknown compatibility mode specification: ".
|
|
"$directive!\n");
|
|
}
|
|
# Determine mode
|
|
$mode = $COMPAT_NAME_TO_MODE{lc($1)};
|
|
if (!defined($mode)) {
|
|
die("ERROR: Unknown compatibility mode '$1'!\n");
|
|
}
|
|
$specified{$mode} = 1;
|
|
# Determine value
|
|
if (defined($2)) {
|
|
$value = $COMPAT_NAME_TO_VALUE{lc($2)};
|
|
if (!defined($value)) {
|
|
die("ERROR: Unknown compatibility mode ".
|
|
"value '$2'!\n");
|
|
}
|
|
} else {
|
|
$value = $COMPAT_VALUE_ON;
|
|
}
|
|
$compat_value{$mode} = $value;
|
|
}
|
|
# Perform auto-detection
|
|
foreach my $mode (sort(keys(%compat_value))) {
|
|
my $value = $compat_value{$mode};
|
|
my $is_autodetect = "";
|
|
my $name = compat_name($mode);
|
|
|
|
if ($value == $COMPAT_VALUE_AUTO) {
|
|
my $autodetect = $COMPAT_MODE_AUTO{$mode};
|
|
|
|
if (!defined($autodetect)) {
|
|
die("ERROR: No auto-detection for ".
|
|
"mode '$name' available!\n");
|
|
}
|
|
|
|
if (ref($autodetect) eq "CODE") {
|
|
$value = &$autodetect();
|
|
$compat_value{$mode} = $value;
|
|
$is_autodetect = " (auto-detected)";
|
|
}
|
|
}
|
|
|
|
if ($specified{$mode}) {
|
|
if ($value == $COMPAT_VALUE_ON) {
|
|
info("Enabling compatibility mode ".
|
|
"'$name'$is_autodetect\n");
|
|
} elsif ($value == $COMPAT_VALUE_OFF) {
|
|
info("Disabling compatibility mode ".
|
|
"'$name'$is_autodetect\n");
|
|
} else {
|
|
info("Using delayed auto-detection for ".
|
|
"compatibility mode ".
|
|
"'$name'\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sub compat_hammer_autodetect()
|
|
{
|
|
if ($gcov_version_string =~ /suse/i && $gcov_version == 0x30303 ||
|
|
$gcov_version_string =~ /mandrake/i && $gcov_version == 0x30302)
|
|
{
|
|
info("Auto-detected compatibility mode for GCC 3.3 (hammer)\n");
|
|
return $COMPAT_VALUE_ON;
|
|
}
|
|
return $COMPAT_VALUE_OFF;
|
|
}
|
|
|
|
#
|
|
# is_compat(mode)
|
|
#
|
|
# Return non-zero if compatibility mode MODE is enabled.
|
|
#
|
|
|
|
sub is_compat($)
|
|
{
|
|
my ($mode) = @_;
|
|
|
|
return 1 if ($compat_value{$mode} == $COMPAT_VALUE_ON);
|
|
return 0;
|
|
}
|
|
|
|
#
|
|
# is_compat_auto(mode)
|
|
#
|
|
# Return non-zero if compatibility mode MODE is set to auto-detect.
|
|
#
|
|
|
|
sub is_compat_auto($)
|
|
{
|
|
my ($mode) = @_;
|
|
|
|
return 1 if ($compat_value{$mode} == $COMPAT_VALUE_AUTO);
|
|
return 0;
|
|
}
|