/*
* Copyright ( C ) 2019 The Android Open Source Project
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
* * Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* * Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in
* the documentation and / or other materials provided with the
* distribution .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT ,
* INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING ,
* BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS
* OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY ,
* OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE .
*/
#include "linker_debug.h"
#include <unistd.h>
#include <android-base/strings.h>
LinkerDebugConfig g_linker_debug_config;
void init_LD_DEBUG(const std::string& value) {
if (value.empty()) return ;
std::vector<std::string> options = android::base::Split(value, "," );
for (const auto & o : options) {
if (o == "calls" ) g_linker_debug_config.calls = true ;
else if (o == "cfi" ) g_linker_debug_config.cfi = true ;
else if (o == "dynamic" ) g_linker_debug_config.dynamic = true ;
else if (o == "lookup" ) g_linker_debug_config.lookup = true ;
else if (o == "props" ) g_linker_debug_config.props = true ;
else if (o == "reloc" ) g_linker_debug_config.reloc = true ;
else if (o == "statistics" ) g_linker_debug_config.statistics = true ;
else if (o == "timing" ) g_linker_debug_config.timing = true ;
else if (o == "all" ) {
g_linker_debug_config.calls = true ;
g_linker_debug_config.cfi = true ;
g_linker_debug_config.dynamic = true ;
g_linker_debug_config.lookup = true ;
g_linker_debug_config.props = true ;
g_linker_debug_config.reloc = true ;
g_linker_debug_config.statistics = true ;
g_linker_debug_config.timing = true ;
} else {
__linker_error("$LD_DEBUG is a comma-separated list of:\n"
"\n"
" calls ctors/dtors/ifuncs\n"
" cfi control flow integrity messages\n"
" dynamic dynamic section processing\n"
" lookup symbol lookup\n"
" props ELF property processing\n"
" reloc relocation resolution\n"
" statistics relocation statistics\n"
" timing timing information\n"
"\n"
"or 'all' for all of the above.\n" );
}
}
if (g_linker_debug_config.calls || g_linker_debug_config.cfi ||
g_linker_debug_config.dynamic || g_linker_debug_config.lookup ||
g_linker_debug_config.props || g_linker_debug_config.reloc ||
g_linker_debug_config.statistics || g_linker_debug_config.timing) {
g_linker_debug_config.any = true ;
}
}
static void linker_log_va_list(int prio, const char * fmt, va_list ap) {
va_list ap2;
va_copy(ap2, ap);
async_safe_format_log_va_list(prio, "linker" , fmt, ap2);
va_end(ap2);
async_safe_format_fd_va_list(STDERR_FILENO, fmt, ap);
write(STDERR_FILENO, "\n" , 1 );
}
void __linker_log(int prio, const char * fmt, ...) {
va_list ap;
va_start(ap, fmt);
linker_log_va_list(prio, fmt, ap);
va_end(ap);
}
void __linker_error(const char * fmt, ...) {
va_list ap;
va_start(ap, fmt);
linker_log_va_list(ANDROID_LOG_FATAL, fmt, ap);
va_end(ap);
_exit (EXIT_FAILURE);
}
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-28)
¤
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