php-src/scripts/gdb/debug_gdb_scripts_gen.php at master · php/php-src · GitHub

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#!/usr/bin/env php

<?php

$rootDir = dirname(__DIR__, 2);

$mainDir = sprintf('%s/main', $rootDir);

$outputFile = sprintf('%s/debug_gdb_scripts.c', $mainDir);

printf("Generating %s\n", $outputFile);

$gdbscript = file_get_contents(sprintf("%s/.gdbinit", $rootDir));

$pyscript = file_get_contents(sprintf("%s/php_gdb.py", __DIR__));

// We can not inline .gdbinit, but we can embed it in the python script.

$pyscript = sprintf(

"gdb.execute('''\n%s\n''')\n%s",

addcslashes($gdbscript, '\'\\'),

$pyscript,

);

$ccode = sprintf(

<<<'C'

* Generated by %s.

* This inlines .gdbinit and php_gdb.py into the .debug_gdb_scripts

* section of the binary, so that they can be found by gdb.

* See https://sourceware.org/gdb/current/onlinedocs/gdb.html/dotdebug_005fgdb_005fscripts-section.html#dotdebug_005fgdb_005fscripts-section

__asm__(

".pushsection \".debug_gdb_scripts\", \"MS\",%%progbits,1\n"

".byte 4 /* Python Text */\n"

".ascii \"gdb.inlined-script\\n\"\n"

".byte 0\n"

".popsection\n"

);

basename(__FILE__),

implode("\n ", array_map(function ($line) {

$escapedPy = addcslashes($line."\n", "\"\n\\");

$escapedAsm = addcslashes(sprintf(".ascii \"%s\"\n", $escapedPy), "\"\n\\?");

return sprintf('"%s"', $escapedAsm);

}, explode("\n", $pyscript))),

);

$len = file_put_contents($outputFile, $ccode);

if ($len !== strlen($ccode)) {

printf("Failed\n");

exit(1);

}

php-src/scripts/gdb/debug_gdb_scripts_gen.php at master · php/php-src · GitHub

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