|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* This file is part of the sj-i/php-profiler package. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) sji <[email protected]> |
|
7
|
|
|
* |
|
8
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
9
|
|
|
* file that was distributed with this source code. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
declare(strict_types=1); |
|
13
|
|
|
|
|
14
|
|
|
namespace PhpProfiler\Lib\Elf\SymbolResolver; |
|
15
|
|
|
|
|
16
|
|
|
use PhpProfiler\Lib\Binary\BinaryReader; |
|
17
|
|
|
use PhpProfiler\Lib\Binary\StringByteReader; |
|
18
|
|
|
use PhpProfiler\Lib\Elf\Parser\Elf64Parser; |
|
19
|
|
|
use PhpProfiler\Lib\Elf\Parser\ElfParserException; |
|
20
|
|
|
use PhpProfiler\Lib\File\FileReaderInterface; |
|
21
|
|
|
|
|
22
|
|
|
/** |
|
23
|
|
|
* Class SymbolResolverCreator |
|
24
|
|
|
* @package PhpProfiler\Lib\Elf |
|
25
|
|
|
*/ |
|
26
|
|
|
final class SymbolResolverCreator |
|
27
|
|
|
{ |
|
28
|
|
|
/** |
|
29
|
|
|
* @var FileReaderInterface |
|
30
|
|
|
*/ |
|
31
|
|
|
private FileReaderInterface $file_reader; |
|
32
|
|
|
|
|
33
|
|
|
/** |
|
34
|
|
|
* SymbolResolverCreator constructor. |
|
35
|
|
|
* @param FileReaderInterface $file_reader |
|
36
|
|
|
*/ |
|
37
|
|
|
public function __construct(FileReaderInterface $file_reader) |
|
38
|
|
|
{ |
|
39
|
|
|
$this->file_reader = $file_reader; |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* @param string $path |
|
44
|
|
|
* @return Elf64LinearScanSymbolResolver |
|
45
|
|
|
* @throws ElfParserException |
|
46
|
|
|
*/ |
|
47
|
|
|
public function createLinearScanResolverFromPath(string $path): Elf64LinearScanSymbolResolver |
|
48
|
|
|
{ |
|
49
|
|
|
$binary = new StringByteReader($this->file_reader->readAll($path)); |
|
50
|
|
|
$parser = new Elf64Parser(new BinaryReader()); |
|
51
|
|
|
$elf_header = $parser->parseElfHeader($binary); |
|
52
|
|
|
$section_header = $parser->parseSectionHeader($binary, $elf_header); |
|
53
|
|
|
$symbol_table_section_header_entry = $section_header->findSymbolTableEntry(); |
|
54
|
|
|
$string_table_section_header_entry = $section_header->findStringTableEntry(); |
|
55
|
|
|
if (is_null($symbol_table_section_header_entry)) { |
|
56
|
|
|
throw new ElfParserException('cannot find symbol table from section header table'); |
|
57
|
|
|
} |
|
58
|
|
|
if (is_null($string_table_section_header_entry)) { |
|
59
|
|
|
throw new ElfParserException('cannot find string table from section header table'); |
|
60
|
|
|
} |
|
61
|
|
|
$symbol_table = $parser->parseSymbolTableFromSectionHeader($binary, $symbol_table_section_header_entry); |
|
62
|
|
|
$string_table = $parser->parseStringTableFromSectionHeader($binary, $string_table_section_header_entry); |
|
63
|
|
|
return new Elf64LinearScanSymbolResolver($symbol_table, $string_table); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
* @param string $path |
|
68
|
|
|
* @return Elf64DynamicSymbolResolver |
|
69
|
|
|
* @throws ElfParserException |
|
70
|
|
|
*/ |
|
71
|
|
|
public function createDynamicResolverFromPath(string $path): Elf64DynamicSymbolResolver |
|
72
|
|
|
{ |
|
73
|
|
|
$binary = new StringByteReader($this->file_reader->readAll($path)); |
|
74
|
|
|
$parser = new Elf64Parser(new BinaryReader()); |
|
75
|
|
|
return Elf64DynamicSymbolResolver::load($parser, $binary); |
|
76
|
|
|
} |
|
77
|
|
|
} |
|
78
|
|
|
|
sj-i /
php-profiler
