448 lines
10 KiB
C++
448 lines
10 KiB
C++
// errors.cc -- handle errors for gold
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// Copyright (C) 2006-2022 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#include "gold.h"
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#include <cstdarg>
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#include <cstdio>
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#include "gold-threads.h"
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#include "parameters.h"
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#include "object.h"
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#include "symtab.h"
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#include "errors.h"
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namespace gold
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{
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// Class Errors.
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const int Errors::max_undefined_error_report;
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Errors::Errors(const char* program_name)
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: program_name_(program_name), lock_(NULL), initialize_lock_(&this->lock_),
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error_count_(0), warning_count_(0), undefined_symbols_()
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{
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}
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// Initialize the lock_ field. If we have not yet processed the
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// parameters, then we can't initialize, since we don't yet know
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// whether we are using threads. That is OK, since if we haven't
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// processed the parameters, we haven't created any threads, and we
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// don't need a lock. Return true if the lock is now initialized.
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bool
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Errors::initialize_lock()
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{
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return this->initialize_lock_.initialize();
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}
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// Increment a counter, holding the lock if available.
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void
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Errors::increment_counter(int *counter)
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{
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if (!this->initialize_lock())
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{
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// The lock does not exist, which means that we don't need it.
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++*counter;
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}
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else
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{
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Hold_lock h(*this->lock_);
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++*counter;
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}
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}
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// Report a fatal error.
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void
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Errors::fatal(const char* format, va_list args)
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{
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fprintf(stderr, _("%s: fatal error: "), this->program_name_);
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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gold_exit(GOLD_ERR);
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}
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// Report a fallback error.
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void
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Errors::fallback(const char* format, va_list args)
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{
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fprintf(stderr, _("%s: fatal error: "), this->program_name_);
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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gold_exit(GOLD_FALLBACK);
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}
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// Report an error.
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void
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Errors::error(const char* format, va_list args)
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{
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fprintf(stderr, _("%s: error: "), this->program_name_);
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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this->increment_counter(&this->error_count_);
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}
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// Report a warning.
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void
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Errors::warning(const char* format, va_list args)
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{
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fprintf(stderr, _("%s: warning: "), this->program_name_);
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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this->increment_counter(&this->warning_count_);
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}
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// Print an informational message.
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void
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Errors::info(const char* format, va_list args)
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{
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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}
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// Print a trace message.
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void
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Errors::trace(const char* format, va_list args)
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{
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vfprintf(stdout, format, args);
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fputc('\n', stdout);
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}
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// Report an error at a reloc location.
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template<int size, bool big_endian>
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void
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Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, va_list args)
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{
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fprintf(stderr, _("%s: error: "),
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relinfo->location(relnum, reloffset).c_str());
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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this->increment_counter(&this->error_count_);
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}
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// Report a warning at a reloc location.
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template<int size, bool big_endian>
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void
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Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, va_list args)
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{
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fprintf(stderr, _("%s: warning: "),
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relinfo->location(relnum, reloffset).c_str());
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vfprintf(stderr, format, args);
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fputc('\n', stderr);
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this->increment_counter(&this->warning_count_);
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}
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// Issue an undefined symbol error with a caller-supplied location string.
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void
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Errors::undefined_symbol(const Symbol* sym, const std::string& location)
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{
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bool initialized = this->initialize_lock();
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gold_assert(initialized);
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const char* zmsg;
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{
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Hold_lock h(*this->lock_);
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if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
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return;
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if (parameters->options().warn_unresolved_symbols())
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{
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++this->warning_count_;
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zmsg = _("warning");
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}
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else
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{
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++this->error_count_;
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zmsg = _("error");
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}
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}
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const char* const version = sym->version();
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if (version == NULL)
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fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
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location.c_str(), zmsg, sym->demangled_name().c_str());
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else
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fprintf(stderr,
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_("%s: %s: undefined reference to '%s', version '%s'\n"),
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location.c_str(), zmsg, sym->demangled_name().c_str(), version);
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if (sym->is_cxx_vtable())
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gold_info(_("%s: the vtable symbol may be undefined because "
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"the class is missing its key function"),
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program_name);
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if (sym->is_placeholder())
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gold_info(_("%s: the symbol should have been defined by a plugin"),
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program_name);
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}
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// Issue a debugging message.
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void
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Errors::debug(const char* format, ...)
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{
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fprintf(stderr, _("%s: "), this->program_name_);
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va_list args;
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va_start(args, format);
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vfprintf(stderr, format, args);
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va_end(args);
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fputc('\n', stderr);
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}
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// The functions which the rest of the code actually calls.
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// Report a fatal error.
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void
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gold_fatal(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->fatal(format, args);
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va_end(args);
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}
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// Report a fallback error.
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void
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gold_fallback(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->fallback(format, args);
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va_end(args);
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}
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// Report an error.
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void
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gold_error(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->error(format, args);
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va_end(args);
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}
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// Report a warning.
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void
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gold_warning(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->warning(format, args);
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va_end(args);
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}
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// Print an informational message.
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void
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gold_info(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->info(format, args);
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va_end(args);
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}
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// Print a trace message (to stdout).
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void
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gold_trace(const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->trace(format, args);
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va_end(args);
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}
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// Report an error at a location.
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template<int size, bool big_endian>
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void
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gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->error_at_location(relinfo, relnum, reloffset,
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format, args);
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va_end(args);
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}
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// Report a warning at a location.
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template<int size, bool big_endian>
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void
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gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
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format, args);
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va_end(args);
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}
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// Report an undefined symbol.
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void
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gold_undefined_symbol(const Symbol* sym)
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{
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parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str());
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}
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// Report an undefined symbol at a reloc location
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template<int size, bool big_endian>
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void
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gold_undefined_symbol_at_location(const Symbol* sym,
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const Relocate_info<size, big_endian>* relinfo,
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size_t relnum, off_t reloffset)
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{
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parameters->errors()->undefined_symbol(sym,
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relinfo->location(relnum, reloffset));
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}
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#ifdef HAVE_TARGET_32_LITTLE
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template
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void
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gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_32_BIG
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template
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void
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gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_64_LITTLE
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template
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void
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gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_64_BIG
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template
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void
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gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_32_LITTLE
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template
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void
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gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_32_BIG
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template
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void
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gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_64_LITTLE
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template
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void
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gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_64_BIG
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template
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void
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gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
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size_t relnum, off_t reloffset,
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const char* format, ...);
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#endif
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#ifdef HAVE_TARGET_32_LITTLE
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template
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void
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gold_undefined_symbol_at_location<32, false>(
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const Symbol* sym,
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const Relocate_info<32, false>* relinfo,
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size_t relnum, off_t reloffset);
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#endif
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#ifdef HAVE_TARGET_32_BIG
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template
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void
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gold_undefined_symbol_at_location<32, true>(
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const Symbol* sym,
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const Relocate_info<32, true>* relinfo,
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size_t relnum, off_t reloffset);
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#endif
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#ifdef HAVE_TARGET_64_LITTLE
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template
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void
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gold_undefined_symbol_at_location<64, false>(
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const Symbol* sym,
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const Relocate_info<64, false>* relinfo,
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size_t relnum, off_t reloffset);
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#endif
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#ifdef HAVE_TARGET_64_BIG
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template
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void
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gold_undefined_symbol_at_location<64, true>(
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const Symbol* sym,
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const Relocate_info<64, true>* relinfo,
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size_t relnum, off_t reloffset);
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#endif
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} // End namespace gold.
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