1 // debug.h -- gold internal debugging support -*- C++ -*- 2 3 // Copyright (C) 2007-2016 Free Software Foundation, Inc. 4 // Written by Ian Lance Taylor <iant@google.com>. 5 6 // This file is part of gold. 7 8 // This program is free software; you can redistribute it and/or modify 9 // it under the terms of the GNU General Public License as published by 10 // the Free Software Foundation; either version 3 of the License, or 11 // (at your option) any later version. 12 13 // This program is distributed in the hope that it will be useful, 14 // but WITHOUT ANY WARRANTY; without even the implied warranty of 15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 // GNU General Public License for more details. 17 18 // You should have received a copy of the GNU General Public License 19 // along with this program; if not, write to the Free Software 20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 // MA 02110-1301, USA. 22 23 #ifndef GOLD_DEBUG_H 24 #define GOLD_DEBUG_H 25 26 #include <cstring> 27 28 #include "parameters.h" 29 #include "errors.h" 30 31 namespace gold 32 { 33 34 // The different types of debugging we support. These are bitflags. 35 36 const int DEBUG_TASK = 0x1; 37 const int DEBUG_SCRIPT = 0x2; 38 const int DEBUG_FILES = 0x4; 39 const int DEBUG_RELAXATION = 0x8; 40 const int DEBUG_INCREMENTAL = 0x10; 41 const int DEBUG_LOCATION = 0x20; 42 43 const int DEBUG_ALL = (DEBUG_TASK | DEBUG_SCRIPT | DEBUG_FILES 44 | DEBUG_RELAXATION | DEBUG_INCREMENTAL 45 | DEBUG_LOCATION); 46 47 // Convert a debug string to the appropriate enum. 48 inline int 49 debug_string_to_enum(const char* arg) 50 { 51 static const struct { const char* name; int value; } 52 debug_options[] = 53 { 54 { "task", DEBUG_TASK }, 55 { "script", DEBUG_SCRIPT }, 56 { "files", DEBUG_FILES }, 57 { "relaxation", DEBUG_RELAXATION }, 58 { "incremental", DEBUG_INCREMENTAL }, 59 { "location", DEBUG_LOCATION }, 60 { "all", DEBUG_ALL } 61 }; 62 63 int retval = 0; 64 for (size_t i = 0; i < sizeof(debug_options) / sizeof(*debug_options); ++i) 65 if (strstr(arg, debug_options[i].name)) 66 retval |= debug_options[i].value; 67 return retval; 68 } 69 70 // Print a debug message if TYPE is enabled. This is a macro so that 71 // we only evaluate the arguments if necessary. 72 73 #define gold_debug(TYPE, FORMAT, ...) \ 74 do \ 75 { \ 76 if (is_debugging_enabled(TYPE)) \ 77 parameters->errors()->debug(FORMAT, __VA_ARGS__); \ 78 } \ 79 while (0) 80 81 } // End namespace gold. 82 83 #endif // !defined(GOLD_DEBUG_H) 84