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[binutils.git] / gold / errors.h
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1 // errors.h -- handle errors for gold -*- C++ -*-
3 // Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
23 #ifndef GOLD_ERRORS_H
24 #define GOLD_ERRORS_H
26 #include <cstdarg>
28 #include "gold-threads.h"
30 namespace gold
33 class Symbol;
34 template<int size, bool big_endian>
35 struct Relocate_info;
37 // This class handles errors for gold. There is a single instance
38 // which is used by all threads. If and when we make the gold code
39 // more amenable to being used in a library, we will make this an
40 // abstract interface class, and expect the caller to provide their
41 // own instantiation.
43 class Errors
45 public:
46 Errors(const char* program_name);
48 // Report a fatal error. After printing the error, this must exit.
49 void
50 fatal(const char* format, va_list) ATTRIBUTE_NORETURN;
52 // Report an error and continue.
53 void
54 error(const char* format, va_list);
56 // Report a warning and continue.
57 void
58 warning(const char* format, va_list);
60 // Print an informational message and continue.
61 void
62 info(const char* format, va_list);
64 // Report an error at a reloc location.
65 template<int size, bool big_endian>
66 void
67 error_at_location(const Relocate_info<size, big_endian>* relinfo,
68 size_t relnum, off_t reloffset,
69 const char* format, va_list);
71 // Report a warning at a reloc location.
72 template<int size, bool big_endian>
73 void
74 warning_at_location(const Relocate_info<size, big_endian>* relinfo,
75 size_t relnum, off_t reloffset,
76 const char* format, va_list);
78 // Issue an undefined symbol error. SYM is the undefined symbol.
79 // RELINFO is the general relocation info. RELNUM is the number of
80 // the reloc, and RELOFFSET is the reloc's offset.
81 template<int size, bool big_endian>
82 void
83 undefined_symbol(const Symbol* sym,
84 const Relocate_info<size, big_endian>* relinfo,
85 size_t relnum, off_t reloffset);
87 // Report a debugging message.
88 void
89 debug(const char* format, ...) ATTRIBUTE_PRINTF_2;
91 // Return the number of errors.
92 int
93 error_count() const
94 { return this->error_count_; }
96 // Return the number of warnings.
97 int
98 warning_count() const
99 { return this->warning_count_; }
101 private:
102 Errors(const Errors&);
103 Errors& operator=(const Errors&);
105 // Initialize the lock. We don't do this in the constructor because
106 // lock initialization wants to know whether we are using threads or
107 // not. This returns true if the lock is now initialized.
108 bool
109 initialize_lock();
111 // Increment a counter, holding the lock.
112 void
113 increment_counter(int*);
115 // The number of times we report an undefined symbol.
116 static const int max_undefined_error_report = 5;
118 // The name of the program.
119 const char* program_name_;
120 // This class can be accessed from multiple threads. This lock is
121 // used to control access to the data structures.
122 Lock* lock_;
123 // Numbers of errors reported.
124 int error_count_;
125 // Number of warnings reported.
126 int warning_count_;
127 // A map counting the numbers of times we have seen an undefined
128 // symbol.
129 Unordered_map<const Symbol*, int> undefined_symbols_;
132 } // End namespace gold.
134 #endif // !defined(GOLD_ERRORS_H)