1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <stdarg.h> 32 #include <unistd.h> 33 34 #include <string> 35 36 #include <async_safe/log.h> 37 #include <async_safe/CHECK.h> 38 39 struct LinkerDebugConfig { 40 // Set automatically if any of the more specific options are set. 41 bool any; 42 43 // Messages relating to calling ctors/dtors/ifuncs. 44 bool calls; 45 // Messages relating to CFI. 46 bool cfi; 47 // Messages relating to the dynamic section. 48 bool dynamic; 49 // Messages relating to symbol lookup. 50 bool lookup; 51 // Messages relating to relocation processing. 52 bool reloc; 53 // Messages relating to ELF properties. 54 bool props; 55 // TODO: "config" and "zip" seem likely to want to be separate? 56 57 bool timing; 58 bool statistics; 59 }; 60 61 extern LinkerDebugConfig g_linker_debug_config; 62 63 __LIBC_HIDDEN__ void init_LD_DEBUG(const std::string& value); 64 __LIBC_HIDDEN__ void __linker_log(int prio, const char* fmt, ...) __printflike(2, 3); 65 __LIBC_HIDDEN__ void __linker_error(const char* fmt, ...) __printflike(1, 2); 66 67 #define LD_DEBUG(what, x...) \ 68 do { \ 69 if (g_linker_debug_config.what) { \ 70 __linker_log(ANDROID_LOG_INFO, x); \ 71 } \ 72 } while (false) 73