1// debug.h -- gold internal debugging support -*- C++ -*- 2 3// Copyright (C) 2007-2017 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 31namespace gold 32{ 33 34// The different types of debugging we support. These are bitflags. 35 36const int DEBUG_TASK = 0x1; 37const int DEBUG_SCRIPT = 0x2; 38const int DEBUG_FILES = 0x4; 39const int DEBUG_RELAXATION = 0x8; 40const int DEBUG_INCREMENTAL = 0x10; 41const int DEBUG_LOCATION = 0x20; 42const int DEBUG_TARGET = 0x40; 43 44const int DEBUG_ALL = (DEBUG_TASK | DEBUG_SCRIPT | DEBUG_FILES 45 | DEBUG_RELAXATION | DEBUG_INCREMENTAL 46 | DEBUG_LOCATION | DEBUG_TARGET); 47 48// Convert a debug string to the appropriate enum. 49inline int 50debug_string_to_enum(const char* arg) 51{ 52 static const struct { const char* name; int value; } 53 debug_options[] = 54 { 55 { "task", DEBUG_TASK }, 56 { "script", DEBUG_SCRIPT }, 57 { "files", DEBUG_FILES }, 58 { "relaxation", DEBUG_RELAXATION }, 59 { "incremental", DEBUG_INCREMENTAL }, 60 { "location", DEBUG_LOCATION }, 61 { "target", DEBUG_TARGET }, 62 { "all", DEBUG_ALL } 63 }; 64 65 int retval = 0; 66 for (size_t i = 0; i < sizeof(debug_options) / sizeof(*debug_options); ++i) 67 if (strstr(arg, debug_options[i].name)) 68 retval |= debug_options[i].value; 69 return retval; 70} 71 72// Print a debug message if TYPE is enabled. This is a macro so that 73// we only evaluate the arguments if necessary. 74 75#define gold_debug(TYPE, ...) \ 76 do \ 77 { \ 78 if (is_debugging_enabled(TYPE)) \ 79 parameters->errors()->debug(__VA_ARGS__); \ 80 } \ 81 while (0) 82 83} // End namespace gold. 84 85#endif // !defined(GOLD_DEBUG_H) 86