// script.cc -- handle linker scripts for gold.
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// script.cc -- handle linker scripts for gold.
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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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 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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// 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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// 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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// 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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// (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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// 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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// 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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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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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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// 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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// 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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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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// MA 02110-1301, USA.
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#include "gold.h"
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#include "gold.h"
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#include <cstdio>
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#include <cstdio>
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#include <cstdlib>
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#include <cstdlib>
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#include <cstring>
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#include <cstring>
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#include <fnmatch.h>
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#include <fnmatch.h>
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#include <string>
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#include <string>
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#include <vector>
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#include <vector>
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#include "filenames.h"
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#include "filenames.h"
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#include "elfcpp.h"
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#include "elfcpp.h"
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#include "demangle.h"
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#include "demangle.h"
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#include "dirsearch.h"
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#include "dirsearch.h"
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#include "options.h"
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#include "options.h"
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#include "fileread.h"
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#include "fileread.h"
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#include "workqueue.h"
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#include "workqueue.h"
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#include "readsyms.h"
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#include "readsyms.h"
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#include "parameters.h"
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#include "parameters.h"
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#include "layout.h"
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#include "layout.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "target-select.h"
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#include "target-select.h"
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#include "script.h"
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#include "script.h"
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#include "script-c.h"
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#include "script-c.h"
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#include "incremental.h"
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#include "incremental.h"
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namespace gold
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namespace gold
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{
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{
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// A token read from a script file. We don't implement keywords here;
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// A token read from a script file. We don't implement keywords here;
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// all keywords are simply represented as a string.
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// all keywords are simply represented as a string.
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class Token
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class Token
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{
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{
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public:
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public:
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// Token classification.
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// Token classification.
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enum Classification
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enum Classification
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{
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{
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// Token is invalid.
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// Token is invalid.
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TOKEN_INVALID,
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TOKEN_INVALID,
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// Token indicates end of input.
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// Token indicates end of input.
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TOKEN_EOF,
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TOKEN_EOF,
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// Token is a string of characters.
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// Token is a string of characters.
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TOKEN_STRING,
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TOKEN_STRING,
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// Token is a quoted string of characters.
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// Token is a quoted string of characters.
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TOKEN_QUOTED_STRING,
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TOKEN_QUOTED_STRING,
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// Token is an operator.
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// Token is an operator.
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TOKEN_OPERATOR,
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TOKEN_OPERATOR,
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// Token is a number (an integer).
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// Token is a number (an integer).
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TOKEN_INTEGER
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TOKEN_INTEGER
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};
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};
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// We need an empty constructor so that we can put this STL objects.
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// We need an empty constructor so that we can put this STL objects.
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Token()
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Token()
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: classification_(TOKEN_INVALID), value_(NULL), value_length_(0),
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: classification_(TOKEN_INVALID), value_(NULL), value_length_(0),
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opcode_(0), lineno_(0), charpos_(0)
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opcode_(0), lineno_(0), charpos_(0)
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{ }
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{ }
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// A general token with no value.
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// A general token with no value.
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Token(Classification classification, int lineno, int charpos)
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Token(Classification classification, int lineno, int charpos)
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: classification_(classification), value_(NULL), value_length_(0),
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: classification_(classification), value_(NULL), value_length_(0),
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opcode_(0), lineno_(lineno), charpos_(charpos)
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opcode_(0), lineno_(lineno), charpos_(charpos)
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{
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{
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gold_assert(classification == TOKEN_INVALID
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gold_assert(classification == TOKEN_INVALID
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|| classification == TOKEN_EOF);
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|| classification == TOKEN_EOF);
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}
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}
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// A general token with a value.
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// A general token with a value.
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Token(Classification classification, const char* value, size_t length,
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Token(Classification classification, const char* value, size_t length,
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int lineno, int charpos)
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int lineno, int charpos)
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: classification_(classification), value_(value), value_length_(length),
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: classification_(classification), value_(value), value_length_(length),
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opcode_(0), lineno_(lineno), charpos_(charpos)
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opcode_(0), lineno_(lineno), charpos_(charpos)
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{
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{
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gold_assert(classification != TOKEN_INVALID
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gold_assert(classification != TOKEN_INVALID
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&& classification != TOKEN_EOF);
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&& classification != TOKEN_EOF);
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}
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}
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// A token representing an operator.
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// A token representing an operator.
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Token(int opcode, int lineno, int charpos)
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Token(int opcode, int lineno, int charpos)
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: classification_(TOKEN_OPERATOR), value_(NULL), value_length_(0),
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: classification_(TOKEN_OPERATOR), value_(NULL), value_length_(0),
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opcode_(opcode), lineno_(lineno), charpos_(charpos)
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opcode_(opcode), lineno_(lineno), charpos_(charpos)
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{ }
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{ }
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// Return whether the token is invalid.
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// Return whether the token is invalid.
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bool
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bool
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is_invalid() const
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is_invalid() const
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{ return this->classification_ == TOKEN_INVALID; }
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{ return this->classification_ == TOKEN_INVALID; }
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// Return whether this is an EOF token.
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// Return whether this is an EOF token.
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bool
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bool
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is_eof() const
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is_eof() const
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{ return this->classification_ == TOKEN_EOF; }
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{ return this->classification_ == TOKEN_EOF; }
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// Return the token classification.
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// Return the token classification.
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Classification
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Classification
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classification() const
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classification() const
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{ return this->classification_; }
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{ return this->classification_; }
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// Return the line number at which the token starts.
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// Return the line number at which the token starts.
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int
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int
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lineno() const
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lineno() const
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{ return this->lineno_; }
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{ return this->lineno_; }
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// Return the character position at this the token starts.
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// Return the character position at this the token starts.
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int
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int
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charpos() const
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charpos() const
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{ return this->charpos_; }
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{ return this->charpos_; }
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// Get the value of a token.
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// Get the value of a token.
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const char*
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const char*
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string_value(size_t* length) const
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string_value(size_t* length) const
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{
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{
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gold_assert(this->classification_ == TOKEN_STRING
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gold_assert(this->classification_ == TOKEN_STRING
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|| this->classification_ == TOKEN_QUOTED_STRING);
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|| this->classification_ == TOKEN_QUOTED_STRING);
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*length = this->value_length_;
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*length = this->value_length_;
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return this->value_;
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return this->value_;
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}
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}
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int
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int
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operator_value() const
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operator_value() const
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{
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{
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gold_assert(this->classification_ == TOKEN_OPERATOR);
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gold_assert(this->classification_ == TOKEN_OPERATOR);
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return this->opcode_;
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return this->opcode_;
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}
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}
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uint64_t
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uint64_t
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integer_value() const
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integer_value() const;
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{
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gold_assert(this->classification_ == TOKEN_INTEGER);
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// Null terminate.
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std::string s(this->value_, this->value_length_);
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return strtoull(s.c_str(), NULL, 0);
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}
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private:
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private:
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// The token classification.
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// The token classification.
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Classification classification_;
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Classification classification_;
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// The token value, for TOKEN_STRING or TOKEN_QUOTED_STRING or
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// The token value, for TOKEN_STRING or TOKEN_QUOTED_STRING or
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// TOKEN_INTEGER.
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// TOKEN_INTEGER.
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const char* value_;
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const char* value_;
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// The length of the token value.
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// The length of the token value.
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size_t value_length_;
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size_t value_length_;
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// The token value, for TOKEN_OPERATOR.
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// The token value, for TOKEN_OPERATOR.
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int opcode_;
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int opcode_;
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// The line number where this token started (one based).
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// The line number where this token started (one based).
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int lineno_;
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int lineno_;
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// The character position within the line where this token started
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// The character position within the line where this token started
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// (one based).
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// (one based).
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int charpos_;
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int charpos_;
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};
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};
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// Return the value of a TOKEN_INTEGER.
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uint64_t
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Token::integer_value() const
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{
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gold_assert(this->classification_ == TOKEN_INTEGER);
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size_t len = this->value_length_;
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uint64_t multiplier = 1;
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char last = this->value_[len - 1];
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if (last == 'm' || last == 'M')
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{
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multiplier = 1024 * 1024;
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--len;
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}
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else if (last == 'k' || last == 'K')
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{
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multiplier = 1024;
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--len;
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}
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char *end;
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uint64_t ret = strtoull(this->value_, &end, 0);
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gold_assert(static_cast<size_t>(end - this->value_) == len);
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return ret * multiplier;
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}
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// This class handles lexing a file into a sequence of tokens.
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// This class handles lexing a file into a sequence of tokens.
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class Lex
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class Lex
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{
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{
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public:
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public:
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// We unfortunately have to support different lexing modes, because
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// We unfortunately have to support different lexing modes, because
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// when reading different parts of a linker script we need to parse
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// when reading different parts of a linker script we need to parse
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// things differently.
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// things differently.
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enum Mode
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enum Mode
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{
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{
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// Reading an ordinary linker script.
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// Reading an ordinary linker script.
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LINKER_SCRIPT,
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LINKER_SCRIPT,
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// Reading an expression in a linker script.
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// Reading an expression in a linker script.
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EXPRESSION,
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EXPRESSION,
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// Reading a version script.
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// Reading a version script.
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VERSION_SCRIPT,
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VERSION_SCRIPT,
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// Reading a --dynamic-list file.
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// Reading a --dynamic-list file.
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DYNAMIC_LIST
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DYNAMIC_LIST
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};
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};
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Lex(const char* input_string, size_t input_length, int parsing_token)
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Lex(const char* input_string, size_t input_length, int parsing_token)
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: input_string_(input_string), input_length_(input_length),
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: input_string_(input_string), input_length_(input_length),
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current_(input_string), mode_(LINKER_SCRIPT),
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current_(input_string), mode_(LINKER_SCRIPT),
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first_token_(parsing_token), token_(),
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first_token_(parsing_token), token_(),
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lineno_(1), linestart_(input_string)
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lineno_(1), linestart_(input_string)
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{ }
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{ }
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// Read a file into a string.
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// Read a file into a string.
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static void
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static void
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read_file(Input_file*, std::string*);
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read_file(Input_file*, std::string*);
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// Return the next token.
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// Return the next token.
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const Token*
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const Token*
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next_token();
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next_token();
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// Return the current lexing mode.
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// Return the current lexing mode.
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Lex::Mode
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Lex::Mode
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mode() const
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mode() const
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{ return this->mode_; }
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{ return this->mode_; }
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// Set the lexing mode.
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// Set the lexing mode.
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void
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void
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set_mode(Mode mode)
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set_mode(Mode mode)
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{ this->mode_ = mode; }
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{ this->mode_ = mode; }
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private:
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private:
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Lex(const Lex&);
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Lex(const Lex&);
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Lex& operator=(const Lex&);
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Lex& operator=(const Lex&);
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// Make a general token with no value at the current location.
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// Make a general token with no value at the current location.
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Token
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Token
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make_token(Token::Classification c, const char* start) const
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make_token(Token::Classification c, const char* start) const
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{ return Token(c, this->lineno_, start - this->linestart_ + 1); }
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{ return Token(c, this->lineno_, start - this->linestart_ + 1); }
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// Make a general token with a value at the current location.
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// Make a general token with a value at the current location.
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Token
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Token
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make_token(Token::Classification c, const char* v, size_t len,
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make_token(Token::Classification c, const char* v, size_t len,
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const char* start)
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const char* start)
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const
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const
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{ return Token(c, v, len, this->lineno_, start - this->linestart_ + 1); }
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{ return Token(c, v, len, this->lineno_, start - this->linestart_ + 1); }
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// Make an operator token at the current location.
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// Make an operator token at the current location.
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Token
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Token
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make_token(int opcode, const char* start) const
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make_token(int opcode, const char* start) const
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{ return Token(opcode, this->lineno_, start - this->linestart_ + 1); }
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{ return Token(opcode, this->lineno_, start - this->linestart_ + 1); }
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// Make an invalid token at the current location.
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// Make an invalid token at the current location.
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Token
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Token
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make_invalid_token(const char* start)
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make_invalid_token(const char* start)
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{ return this->make_token(Token::TOKEN_INVALID, start); }
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{ return this->make_token(Token::TOKEN_INVALID, start); }
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// Make an EOF token at the current location.
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// Make an EOF token at the current location.
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Token
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Token
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make_eof_token(const char* start)
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make_eof_token(const char* start)
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{ return this->make_token(Token::TOKEN_EOF, start); }
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{ return this->make_token(Token::TOKEN_EOF, start); }
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// Return whether C can be the first character in a name. C2 is the
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// Return whether C can be the first character in a name. C2 is the
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// next character, since we sometimes need that.
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// next character, since we sometimes need that.
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inline bool
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inline bool
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can_start_name(char c, char c2);
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can_start_name(char c, char c2);
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// If C can appear in a name which has already started, return a
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// If C can appear in a name which has already started, return a
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// pointer to a character later in the token or just past
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// pointer to a character later in the token or just past
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// it. Otherwise, return NULL.
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// it. Otherwise, return NULL.
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inline const char*
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inline const char*
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can_continue_name(const char* c);
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can_continue_name(const char* c);
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// Return whether C, C2, C3 can start a hex number.
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// Return whether C, C2, C3 can start a hex number.
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inline bool
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inline bool
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can_start_hex(char c, char c2, char c3);
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can_start_hex(char c, char c2, char c3);
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// If C can appear in a hex number which has already started, return
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// If C can appear in a hex number which has already started, return
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// a pointer to a character later in the token or just past
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// a pointer to a character later in the token or just past
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// it. Otherwise, return NULL.
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// it. Otherwise, return NULL.
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inline const char*
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inline const char*
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can_continue_hex(const char* c);
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can_continue_hex(const char* c);
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// Return whether C can start a non-hex number.
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// Return whether C can start a non-hex number.
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static inline bool
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static inline bool
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can_start_number(char c);
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can_start_number(char c);
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// If C can appear in a decimal number which has already started,
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// If C can appear in a decimal number which has already started,
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// return a pointer to a character later in the token or just past
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// return a pointer to a character later in the token or just past
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// it. Otherwise, return NULL.
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// it. Otherwise, return NULL.
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inline const char*
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inline const char*
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can_continue_number(const char* c)
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can_continue_number(const char* c)
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{ return Lex::can_start_number(*c) ? c + 1 : NULL; }
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{ return Lex::can_start_number(*c) ? c + 1 : NULL; }
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// If C1 C2 C3 form a valid three character operator, return the
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// If C1 C2 C3 form a valid three character operator, return the
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// opcode. Otherwise return 0.
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// opcode. Otherwise return 0.
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static inline int
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static inline int
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three_char_operator(char c1, char c2, char c3);
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three_char_operator(char c1, char c2, char c3);
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// If C1 C2 form a valid two character operator, return the opcode.
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// If C1 C2 form a valid two character operator, return the opcode.
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// Otherwise return 0.
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// Otherwise return 0.
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static inline int
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static inline int
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two_char_operator(char c1, char c2);
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two_char_operator(char c1, char c2);
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// If C1 is a valid one character operator, return the opcode.
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// If C1 is a valid one character operator, return the opcode.
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// Otherwise return 0.
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// Otherwise return 0.
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static inline int
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static inline int
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one_char_operator(char c1);
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one_char_operator(char c1);
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// Read the next token.
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// Read the next token.
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Token
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Token
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get_token(const char**);
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get_token(const char**);
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// Skip a C style /* */ comment. Return false if the comment did
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// Skip a C style /* */ comment. Return false if the comment did
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// not end.
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// not end.
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bool
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bool
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skip_c_comment(const char**);
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skip_c_comment(const char**);
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// Skip a line # comment. Return false if there was no newline.
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// Skip a line # comment. Return false if there was no newline.
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bool
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bool
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skip_line_comment(const char**);
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skip_line_comment(const char**);
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// Build a token CLASSIFICATION from all characters that match
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// Build a token CLASSIFICATION from all characters that match
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// CAN_CONTINUE_FN. The token starts at START. Start matching from
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// CAN_CONTINUE_FN. The token starts at START. Start matching from
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// MATCH. Set *PP to the character following the token.
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// MATCH. Set *PP to the character following the token.
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inline Token
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inline Token
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gather_token(Token::Classification,
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gather_token(Token::Classification,
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const char* (Lex::*can_continue_fn)(const char*),
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const char* (Lex::*can_continue_fn)(const char*),
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const char* start, const char* match, const char** pp);
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const char* start, const char* match, const char** pp);
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// Build a token from a quoted string.
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// Build a token from a quoted string.
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Token
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Token
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gather_quoted_string(const char** pp);
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gather_quoted_string(const char** pp);
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// The string we are tokenizing.
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// The string we are tokenizing.
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const char* input_string_;
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const char* input_string_;
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// The length of the string.
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// The length of the string.
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size_t input_length_;
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size_t input_length_;
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// The current offset into the string.
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// The current offset into the string.
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const char* current_;
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const char* current_;
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// The current lexing mode.
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// The current lexing mode.
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Mode mode_;
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Mode mode_;
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// The code to use for the first token. This is set to 0 after it
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// The code to use for the first token. This is set to 0 after it
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// is used.
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// is used.
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int first_token_;
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int first_token_;
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// The current token.
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// The current token.
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Token token_;
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Token token_;
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// The current line number.
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// The current line number.
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int lineno_;
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int lineno_;
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// The start of the current line in the string.
|
// The start of the current line in the string.
|
const char* linestart_;
|
const char* linestart_;
|
};
|
};
|
|
|
// Read the whole file into memory. We don't expect linker scripts to
|
// Read the whole file into memory. We don't expect linker scripts to
|
// be large, so we just use a std::string as a buffer. We ignore the
|
// be large, so we just use a std::string as a buffer. We ignore the
|
// data we've already read, so that we read aligned buffers.
|
// data we've already read, so that we read aligned buffers.
|
|
|
void
|
void
|
Lex::read_file(Input_file* input_file, std::string* contents)
|
Lex::read_file(Input_file* input_file, std::string* contents)
|
{
|
{
|
off_t filesize = input_file->file().filesize();
|
off_t filesize = input_file->file().filesize();
|
contents->clear();
|
contents->clear();
|
contents->reserve(filesize);
|
contents->reserve(filesize);
|
|
|
off_t off = 0;
|
off_t off = 0;
|
unsigned char buf[BUFSIZ];
|
unsigned char buf[BUFSIZ];
|
while (off < filesize)
|
while (off < filesize)
|
{
|
{
|
off_t get = BUFSIZ;
|
off_t get = BUFSIZ;
|
if (get > filesize - off)
|
if (get > filesize - off)
|
get = filesize - off;
|
get = filesize - off;
|
input_file->file().read(off, get, buf);
|
input_file->file().read(off, get, buf);
|
contents->append(reinterpret_cast<char*>(&buf[0]), get);
|
contents->append(reinterpret_cast<char*>(&buf[0]), get);
|
off += get;
|
off += get;
|
}
|
}
|
}
|
}
|
|
|
// Return whether C can be the start of a name, if the next character
|
// Return whether C can be the start of a name, if the next character
|
// is C2. A name can being with a letter, underscore, period, or
|
// is C2. A name can being with a letter, underscore, period, or
|
// dollar sign. Because a name can be a file name, we also permit
|
// dollar sign. Because a name can be a file name, we also permit
|
// forward slash, backslash, and tilde. Tilde is the tricky case
|
// forward slash, backslash, and tilde. Tilde is the tricky case
|
// here; GNU ld also uses it as a bitwise not operator. It is only
|
// here; GNU ld also uses it as a bitwise not operator. It is only
|
// recognized as the operator if it is not immediately followed by
|
// recognized as the operator if it is not immediately followed by
|
// some character which can appear in a symbol. That is, when we
|
// some character which can appear in a symbol. That is, when we
|
// don't know that we are looking at an expression, "~0" is a file
|
// don't know that we are looking at an expression, "~0" is a file
|
// name, and "~ 0" is an expression using bitwise not. We are
|
// name, and "~ 0" is an expression using bitwise not. We are
|
// compatible.
|
// compatible.
|
|
|
inline bool
|
inline bool
|
Lex::can_start_name(char c, char c2)
|
Lex::can_start_name(char c, char c2)
|
{
|
{
|
switch (c)
|
switch (c)
|
{
|
{
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'M': case 'N': case 'O': case 'Q': case 'P': case 'R':
|
case 'M': case 'N': case 'O': case 'Q': case 'P': case 'R':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'Y': case 'Z':
|
case 'Y': case 'Z':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'm': case 'n': case 'o': case 'q': case 'p': case 'r':
|
case 'm': case 'n': case 'o': case 'q': case 'p': case 'r':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 'y': case 'z':
|
case 'y': case 'z':
|
case '_': case '.': case '$':
|
case '_': case '.': case '$':
|
return true;
|
return true;
|
|
|
case '/': case '\\':
|
case '/': case '\\':
|
return this->mode_ == LINKER_SCRIPT;
|
return this->mode_ == LINKER_SCRIPT;
|
|
|
case '~':
|
case '~':
|
return this->mode_ == LINKER_SCRIPT && can_continue_name(&c2);
|
return this->mode_ == LINKER_SCRIPT && can_continue_name(&c2);
|
|
|
case '*': case '[':
|
case '*': case '[':
|
return (this->mode_ == VERSION_SCRIPT
|
return (this->mode_ == VERSION_SCRIPT
|
|| this->mode_ == DYNAMIC_LIST
|
|| this->mode_ == DYNAMIC_LIST
|
|| (this->mode_ == LINKER_SCRIPT
|
|| (this->mode_ == LINKER_SCRIPT
|
&& can_continue_name(&c2)));
|
&& can_continue_name(&c2)));
|
|
|
default:
|
default:
|
return false;
|
return false;
|
}
|
}
|
}
|
}
|
|
|
// Return whether C can continue a name which has already started.
|
// Return whether C can continue a name which has already started.
|
// Subsequent characters in a name are the same as the leading
|
// Subsequent characters in a name are the same as the leading
|
// characters, plus digits and "=+-:[],?*". So in general the linker
|
// characters, plus digits and "=+-:[],?*". So in general the linker
|
// script language requires spaces around operators, unless we know
|
// script language requires spaces around operators, unless we know
|
// that we are parsing an expression.
|
// that we are parsing an expression.
|
|
|
inline const char*
|
inline const char*
|
Lex::can_continue_name(const char* c)
|
Lex::can_continue_name(const char* c)
|
{
|
{
|
switch (*c)
|
switch (*c)
|
{
|
{
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
|
case 'M': case 'N': case 'O': case 'Q': case 'P': case 'R':
|
case 'M': case 'N': case 'O': case 'Q': case 'P': case 'R':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
|
case 'Y': case 'Z':
|
case 'Y': case 'Z':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
|
case 'm': case 'n': case 'o': case 'q': case 'p': case 'r':
|
case 'm': case 'n': case 'o': case 'q': case 'p': case 'r':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
|
case 'y': case 'z':
|
case 'y': case 'z':
|
case '_': case '.': case '$':
|
case '_': case '.': case '$':
|
case '0': case '1': case '2': case '3': case '4':
|
case '0': case '1': case '2': case '3': case '4':
|
case '5': case '6': case '7': case '8': case '9':
|
case '5': case '6': case '7': case '8': case '9':
|
return c + 1;
|
return c + 1;
|
|
|
// TODO(csilvers): why not allow ~ in names for version-scripts?
|
// TODO(csilvers): why not allow ~ in names for version-scripts?
|
case '/': case '\\': case '~':
|
case '/': case '\\': case '~':
|
case '=': case '+':
|
case '=': case '+':
|
case ',':
|
case ',':
|
if (this->mode_ == LINKER_SCRIPT)
|
if (this->mode_ == LINKER_SCRIPT)
|
return c + 1;
|
return c + 1;
|
return NULL;
|
return NULL;
|
|
|
case '[': case ']': case '*': case '?': case '-':
|
case '[': case ']': case '*': case '?': case '-':
|
if (this->mode_ == LINKER_SCRIPT || this->mode_ == VERSION_SCRIPT
|
if (this->mode_ == LINKER_SCRIPT || this->mode_ == VERSION_SCRIPT
|
|| this->mode_ == DYNAMIC_LIST)
|
|| this->mode_ == DYNAMIC_LIST)
|
return c + 1;
|
return c + 1;
|
return NULL;
|
return NULL;
|
|
|
// TODO(csilvers): why allow this? ^ is meaningless in version scripts.
|
// TODO(csilvers): why allow this? ^ is meaningless in version scripts.
|
case '^':
|
case '^':
|
if (this->mode_ == VERSION_SCRIPT || this->mode_ == DYNAMIC_LIST)
|
if (this->mode_ == VERSION_SCRIPT || this->mode_ == DYNAMIC_LIST)
|
return c + 1;
|
return c + 1;
|
return NULL;
|
return NULL;
|
|
|
case ':':
|
case ':':
|
if (this->mode_ == LINKER_SCRIPT)
|
if (this->mode_ == LINKER_SCRIPT)
|
return c + 1;
|
return c + 1;
|
else if ((this->mode_ == VERSION_SCRIPT || this->mode_ == DYNAMIC_LIST)
|
else if ((this->mode_ == VERSION_SCRIPT || this->mode_ == DYNAMIC_LIST)
|
&& (c[1] == ':'))
|
&& (c[1] == ':'))
|
{
|
{
|
// A name can have '::' in it, as that's a c++ namespace
|
// A name can have '::' in it, as that's a c++ namespace
|
// separator. But a single colon is not part of a name.
|
// separator. But a single colon is not part of a name.
|
return c + 2;
|
return c + 2;
|
}
|
}
|
return NULL;
|
return NULL;
|
|
|
default:
|
default:
|
return NULL;
|
return NULL;
|
}
|
}
|
}
|
}
|
|
|
// For a number we accept 0x followed by hex digits, or any sequence
|
// For a number we accept 0x followed by hex digits, or any sequence
|
// of digits. The old linker accepts leading '$' for hex, and
|
// of digits. The old linker accepts leading '$' for hex, and
|
// trailing HXBOD. Those are for MRI compatibility and we don't
|
// trailing HXBOD. Those are for MRI compatibility and we don't
|
// accept them. The old linker also accepts trailing MK for mega or
|
// accept them.
|
// kilo. FIXME: Those are mentioned in the documentation, and we
|
|
// should accept them.
|
|
|
|
// Return whether C1 C2 C3 can start a hex number.
|
// Return whether C1 C2 C3 can start a hex number.
|
|
|
inline bool
|
inline bool
|
Lex::can_start_hex(char c1, char c2, char c3)
|
Lex::can_start_hex(char c1, char c2, char c3)
|
{
|
{
|
if (c1 == '0' && (c2 == 'x' || c2 == 'X'))
|
if (c1 == '0' && (c2 == 'x' || c2 == 'X'))
|
return this->can_continue_hex(&c3);
|
return this->can_continue_hex(&c3);
|
return false;
|
return false;
|
}
|
}
|
|
|
// Return whether C can appear in a hex number.
|
// Return whether C can appear in a hex number.
|
|
|
inline const char*
|
inline const char*
|
Lex::can_continue_hex(const char* c)
|
Lex::can_continue_hex(const char* c)
|
{
|
{
|
switch (*c)
|
switch (*c)
|
{
|
{
|
case '0': case '1': case '2': case '3': case '4':
|
case '0': case '1': case '2': case '3': case '4':
|
case '5': case '6': case '7': case '8': case '9':
|
case '5': case '6': case '7': case '8': case '9':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
|
return c + 1;
|
return c + 1;
|
|
|
default:
|
default:
|
return NULL;
|
return NULL;
|
}
|
}
|
}
|
}
|
|
|
// Return whether C can start a non-hex number.
|
// Return whether C can start a non-hex number.
|
|
|
inline bool
|
inline bool
|
Lex::can_start_number(char c)
|
Lex::can_start_number(char c)
|
{
|
{
|
switch (c)
|
switch (c)
|
{
|
{
|
case '0': case '1': case '2': case '3': case '4':
|
case '0': case '1': case '2': case '3': case '4':
|
case '5': case '6': case '7': case '8': case '9':
|
case '5': case '6': case '7': case '8': case '9':
|
return true;
|
return true;
|
|
|
default:
|
default:
|
return false;
|
return false;
|
}
|
}
|
}
|
}
|
|
|
// If C1 C2 C3 form a valid three character operator, return the
|
// If C1 C2 C3 form a valid three character operator, return the
|
// opcode (defined in the yyscript.h file generated from yyscript.y).
|
// opcode (defined in the yyscript.h file generated from yyscript.y).
|
// Otherwise return 0.
|
// Otherwise return 0.
|
|
|
inline int
|
inline int
|
Lex::three_char_operator(char c1, char c2, char c3)
|
Lex::three_char_operator(char c1, char c2, char c3)
|
{
|
{
|
switch (c1)
|
switch (c1)
|
{
|
{
|
case '<':
|
case '<':
|
if (c2 == '<' && c3 == '=')
|
if (c2 == '<' && c3 == '=')
|
return LSHIFTEQ;
|
return LSHIFTEQ;
|
break;
|
break;
|
case '>':
|
case '>':
|
if (c2 == '>' && c3 == '=')
|
if (c2 == '>' && c3 == '=')
|
return RSHIFTEQ;
|
return RSHIFTEQ;
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
// If C1 C2 form a valid two character operator, return the opcode
|
// If C1 C2 form a valid two character operator, return the opcode
|
// (defined in the yyscript.h file generated from yyscript.y).
|
// (defined in the yyscript.h file generated from yyscript.y).
|
// Otherwise return 0.
|
// Otherwise return 0.
|
|
|
inline int
|
inline int
|
Lex::two_char_operator(char c1, char c2)
|
Lex::two_char_operator(char c1, char c2)
|
{
|
{
|
switch (c1)
|
switch (c1)
|
{
|
{
|
case '=':
|
case '=':
|
if (c2 == '=')
|
if (c2 == '=')
|
return EQ;
|
return EQ;
|
break;
|
break;
|
case '!':
|
case '!':
|
if (c2 == '=')
|
if (c2 == '=')
|
return NE;
|
return NE;
|
break;
|
break;
|
case '+':
|
case '+':
|
if (c2 == '=')
|
if (c2 == '=')
|
return PLUSEQ;
|
return PLUSEQ;
|
break;
|
break;
|
case '-':
|
case '-':
|
if (c2 == '=')
|
if (c2 == '=')
|
return MINUSEQ;
|
return MINUSEQ;
|
break;
|
break;
|
case '*':
|
case '*':
|
if (c2 == '=')
|
if (c2 == '=')
|
return MULTEQ;
|
return MULTEQ;
|
break;
|
break;
|
case '/':
|
case '/':
|
if (c2 == '=')
|
if (c2 == '=')
|
return DIVEQ;
|
return DIVEQ;
|
break;
|
break;
|
case '|':
|
case '|':
|
if (c2 == '=')
|
if (c2 == '=')
|
return OREQ;
|
return OREQ;
|
if (c2 == '|')
|
if (c2 == '|')
|
return OROR;
|
return OROR;
|
break;
|
break;
|
case '&':
|
case '&':
|
if (c2 == '=')
|
if (c2 == '=')
|
return ANDEQ;
|
return ANDEQ;
|
if (c2 == '&')
|
if (c2 == '&')
|
return ANDAND;
|
return ANDAND;
|
break;
|
break;
|
case '>':
|
case '>':
|
if (c2 == '=')
|
if (c2 == '=')
|
return GE;
|
return GE;
|
if (c2 == '>')
|
if (c2 == '>')
|
return RSHIFT;
|
return RSHIFT;
|
break;
|
break;
|
case '<':
|
case '<':
|
if (c2 == '=')
|
if (c2 == '=')
|
return LE;
|
return LE;
|
if (c2 == '<')
|
if (c2 == '<')
|
return LSHIFT;
|
return LSHIFT;
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
// If C1 is a valid operator, return the opcode. Otherwise return 0.
|
// If C1 is a valid operator, return the opcode. Otherwise return 0.
|
|
|
inline int
|
inline int
|
Lex::one_char_operator(char c1)
|
Lex::one_char_operator(char c1)
|
{
|
{
|
switch (c1)
|
switch (c1)
|
{
|
{
|
case '+':
|
case '+':
|
case '-':
|
case '-':
|
case '*':
|
case '*':
|
case '/':
|
case '/':
|
case '%':
|
case '%':
|
case '!':
|
case '!':
|
case '&':
|
case '&':
|
case '|':
|
case '|':
|
case '^':
|
case '^':
|
case '~':
|
case '~':
|
case '<':
|
case '<':
|
case '>':
|
case '>':
|
case '=':
|
case '=':
|
case '?':
|
case '?':
|
case ',':
|
case ',':
|
case '(':
|
case '(':
|
case ')':
|
case ')':
|
case '{':
|
case '{':
|
case '}':
|
case '}':
|
case '[':
|
case '[':
|
case ']':
|
case ']':
|
case ':':
|
case ':':
|
case ';':
|
case ';':
|
return c1;
|
return c1;
|
default:
|
default:
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
// Skip a C style comment. *PP points to just after the "/*". Return
|
// Skip a C style comment. *PP points to just after the "/*". Return
|
// false if the comment did not end.
|
// false if the comment did not end.
|
|
|
bool
|
bool
|
Lex::skip_c_comment(const char** pp)
|
Lex::skip_c_comment(const char** pp)
|
{
|
{
|
const char* p = *pp;
|
const char* p = *pp;
|
while (p[0] != '*' || p[1] != '/')
|
while (p[0] != '*' || p[1] != '/')
|
{
|
{
|
if (*p == '\0')
|
if (*p == '\0')
|
{
|
{
|
*pp = p;
|
*pp = p;
|
return false;
|
return false;
|
}
|
}
|
|
|
if (*p == '\n')
|
if (*p == '\n')
|
{
|
{
|
++this->lineno_;
|
++this->lineno_;
|
this->linestart_ = p + 1;
|
this->linestart_ = p + 1;
|
}
|
}
|
++p;
|
++p;
|
}
|
}
|
|
|
*pp = p + 2;
|
*pp = p + 2;
|
return true;
|
return true;
|
}
|
}
|
|
|
// Skip a line # comment. Return false if there was no newline.
|
// Skip a line # comment. Return false if there was no newline.
|
|
|
bool
|
bool
|
Lex::skip_line_comment(const char** pp)
|
Lex::skip_line_comment(const char** pp)
|
{
|
{
|
const char* p = *pp;
|
const char* p = *pp;
|
size_t skip = strcspn(p, "\n");
|
size_t skip = strcspn(p, "\n");
|
if (p[skip] == '\0')
|
if (p[skip] == '\0')
|
{
|
{
|
*pp = p + skip;
|
*pp = p + skip;
|
return false;
|
return false;
|
}
|
}
|
|
|
p += skip + 1;
|
p += skip + 1;
|
++this->lineno_;
|
++this->lineno_;
|
this->linestart_ = p;
|
this->linestart_ = p;
|
*pp = p;
|
*pp = p;
|
|
|
return true;
|
return true;
|
}
|
}
|
|
|
// Build a token CLASSIFICATION from all characters that match
|
// Build a token CLASSIFICATION from all characters that match
|
// CAN_CONTINUE_FN. Update *PP.
|
// CAN_CONTINUE_FN. Update *PP.
|
|
|
inline Token
|
inline Token
|
Lex::gather_token(Token::Classification classification,
|
Lex::gather_token(Token::Classification classification,
|
const char* (Lex::*can_continue_fn)(const char*),
|
const char* (Lex::*can_continue_fn)(const char*),
|
const char* start,
|
const char* start,
|
const char* match,
|
const char* match,
|
const char** pp)
|
const char** pp)
|
{
|
{
|
const char* new_match = NULL;
|
const char* new_match = NULL;
|
while ((new_match = (this->*can_continue_fn)(match)))
|
while ((new_match = (this->*can_continue_fn)(match)) != NULL)
|
match = new_match;
|
match = new_match;
|
|
|
|
// A special case: integers may be followed by a single M or K,
|
|
// case-insensitive.
|
|
if (classification == Token::TOKEN_INTEGER
|
|
&& (*match == 'm' || *match == 'M' || *match == 'k' || *match == 'K'))
|
|
++match;
|
|
|
*pp = match;
|
*pp = match;
|
return this->make_token(classification, start, match - start, start);
|
return this->make_token(classification, start, match - start, start);
|
}
|
}
|
|
|
// Build a token from a quoted string.
|
// Build a token from a quoted string.
|
|
|
Token
|
Token
|
Lex::gather_quoted_string(const char** pp)
|
Lex::gather_quoted_string(const char** pp)
|
{
|
{
|
const char* start = *pp;
|
const char* start = *pp;
|
const char* p = start;
|
const char* p = start;
|
++p;
|
++p;
|
size_t skip = strcspn(p, "\"\n");
|
size_t skip = strcspn(p, "\"\n");
|
if (p[skip] != '"')
|
if (p[skip] != '"')
|
return this->make_invalid_token(start);
|
return this->make_invalid_token(start);
|
*pp = p + skip + 1;
|
*pp = p + skip + 1;
|
return this->make_token(Token::TOKEN_QUOTED_STRING, p, skip, start);
|
return this->make_token(Token::TOKEN_QUOTED_STRING, p, skip, start);
|
}
|
}
|
|
|
// Return the next token at *PP. Update *PP. General guideline: we
|
// Return the next token at *PP. Update *PP. General guideline: we
|
// require linker scripts to be simple ASCII. No unicode linker
|
// require linker scripts to be simple ASCII. No unicode linker
|
// scripts. In particular we can assume that any '\0' is the end of
|
// scripts. In particular we can assume that any '\0' is the end of
|
// the input.
|
// the input.
|
|
|
Token
|
Token
|
Lex::get_token(const char** pp)
|
Lex::get_token(const char** pp)
|
{
|
{
|
const char* p = *pp;
|
const char* p = *pp;
|
|
|
while (true)
|
while (true)
|
{
|
{
|
if (*p == '\0')
|
if (*p == '\0')
|
{
|
{
|
*pp = p;
|
*pp = p;
|
return this->make_eof_token(p);
|
return this->make_eof_token(p);
|
}
|
}
|
|
|
// Skip whitespace quickly.
|
// Skip whitespace quickly.
|
while (*p == ' ' || *p == '\t' || *p == '\r')
|
while (*p == ' ' || *p == '\t' || *p == '\r')
|
++p;
|
++p;
|
|
|
if (*p == '\n')
|
if (*p == '\n')
|
{
|
{
|
++p;
|
++p;
|
++this->lineno_;
|
++this->lineno_;
|
this->linestart_ = p;
|
this->linestart_ = p;
|
continue;
|
continue;
|
}
|
}
|
|
|
// Skip C style comments.
|
// Skip C style comments.
|
if (p[0] == '/' && p[1] == '*')
|
if (p[0] == '/' && p[1] == '*')
|
{
|
{
|
int lineno = this->lineno_;
|
int lineno = this->lineno_;
|
int charpos = p - this->linestart_ + 1;
|
int charpos = p - this->linestart_ + 1;
|
|
|
*pp = p + 2;
|
*pp = p + 2;
|
if (!this->skip_c_comment(pp))
|
if (!this->skip_c_comment(pp))
|
return Token(Token::TOKEN_INVALID, lineno, charpos);
|
return Token(Token::TOKEN_INVALID, lineno, charpos);
|
p = *pp;
|
p = *pp;
|
|
|
continue;
|
continue;
|
}
|
}
|
|
|
// Skip line comments.
|
// Skip line comments.
|
if (*p == '#')
|
if (*p == '#')
|
{
|
{
|
*pp = p + 1;
|
*pp = p + 1;
|
if (!this->skip_line_comment(pp))
|
if (!this->skip_line_comment(pp))
|
return this->make_eof_token(p);
|
return this->make_eof_token(p);
|
p = *pp;
|
p = *pp;
|
continue;
|
continue;
|
}
|
}
|
|
|
// Check for a name.
|
// Check for a name.
|
if (this->can_start_name(p[0], p[1]))
|
if (this->can_start_name(p[0], p[1]))
|
return this->gather_token(Token::TOKEN_STRING,
|
return this->gather_token(Token::TOKEN_STRING,
|
&Lex::can_continue_name,
|
&Lex::can_continue_name,
|
p, p + 1, pp);
|
p, p + 1, pp);
|
|
|
// We accept any arbitrary name in double quotes, as long as it
|
// We accept any arbitrary name in double quotes, as long as it
|
// does not cross a line boundary.
|
// does not cross a line boundary.
|
if (*p == '"')
|
if (*p == '"')
|
{
|
{
|
*pp = p;
|
*pp = p;
|
return this->gather_quoted_string(pp);
|
return this->gather_quoted_string(pp);
|
}
|
}
|
|
|
// Check for a number.
|
// Check for a number.
|
|
|
if (this->can_start_hex(p[0], p[1], p[2]))
|
if (this->can_start_hex(p[0], p[1], p[2]))
|
return this->gather_token(Token::TOKEN_INTEGER,
|
return this->gather_token(Token::TOKEN_INTEGER,
|
&Lex::can_continue_hex,
|
&Lex::can_continue_hex,
|
p, p + 3, pp);
|
p, p + 3, pp);
|
|
|
if (Lex::can_start_number(p[0]))
|
if (Lex::can_start_number(p[0]))
|
return this->gather_token(Token::TOKEN_INTEGER,
|
return this->gather_token(Token::TOKEN_INTEGER,
|
&Lex::can_continue_number,
|
&Lex::can_continue_number,
|
p, p + 1, pp);
|
p, p + 1, pp);
|
|
|
// Check for operators.
|
// Check for operators.
|
|
|
int opcode = Lex::three_char_operator(p[0], p[1], p[2]);
|
int opcode = Lex::three_char_operator(p[0], p[1], p[2]);
|
if (opcode != 0)
|
if (opcode != 0)
|
{
|
{
|
*pp = p + 3;
|
*pp = p + 3;
|
return this->make_token(opcode, p);
|
return this->make_token(opcode, p);
|
}
|
}
|
|
|
opcode = Lex::two_char_operator(p[0], p[1]);
|
opcode = Lex::two_char_operator(p[0], p[1]);
|
if (opcode != 0)
|
if (opcode != 0)
|
{
|
{
|
*pp = p + 2;
|
*pp = p + 2;
|
return this->make_token(opcode, p);
|
return this->make_token(opcode, p);
|
}
|
}
|
|
|
opcode = Lex::one_char_operator(p[0]);
|
opcode = Lex::one_char_operator(p[0]);
|
if (opcode != 0)
|
if (opcode != 0)
|
{
|
{
|
*pp = p + 1;
|
*pp = p + 1;
|
return this->make_token(opcode, p);
|
return this->make_token(opcode, p);
|
}
|
}
|
|
|
return this->make_token(Token::TOKEN_INVALID, p);
|
return this->make_token(Token::TOKEN_INVALID, p);
|
}
|
}
|
}
|
}
|
|
|
// Return the next token.
|
// Return the next token.
|
|
|
const Token*
|
const Token*
|
Lex::next_token()
|
Lex::next_token()
|
{
|
{
|
// The first token is special.
|
// The first token is special.
|
if (this->first_token_ != 0)
|
if (this->first_token_ != 0)
|
{
|
{
|
this->token_ = Token(this->first_token_, 0, 0);
|
this->token_ = Token(this->first_token_, 0, 0);
|
this->first_token_ = 0;
|
this->first_token_ = 0;
|
return &this->token_;
|
return &this->token_;
|
}
|
}
|
|
|
this->token_ = this->get_token(&this->current_);
|
this->token_ = this->get_token(&this->current_);
|
|
|
// Don't let an early null byte fool us into thinking that we've
|
// Don't let an early null byte fool us into thinking that we've
|
// reached the end of the file.
|
// reached the end of the file.
|
if (this->token_.is_eof()
|
if (this->token_.is_eof()
|
&& (static_cast<size_t>(this->current_ - this->input_string_)
|
&& (static_cast<size_t>(this->current_ - this->input_string_)
|
< this->input_length_))
|
< this->input_length_))
|
this->token_ = this->make_invalid_token(this->current_);
|
this->token_ = this->make_invalid_token(this->current_);
|
|
|
return &this->token_;
|
return &this->token_;
|
}
|
}
|
|
|
// class Symbol_assignment.
|
// class Symbol_assignment.
|
|
|
// Add the symbol to the symbol table. This makes sure the symbol is
|
// Add the symbol to the symbol table. This makes sure the symbol is
|
// there and defined. The actual value is stored later. We can't
|
// there and defined. The actual value is stored later. We can't
|
// determine the actual value at this point, because we can't
|
// determine the actual value at this point, because we can't
|
// necessarily evaluate the expression until all ordinary symbols have
|
// necessarily evaluate the expression until all ordinary symbols have
|
// been finalized.
|
// been finalized.
|
|
|
// The GNU linker lets symbol assignments in the linker script
|
// The GNU linker lets symbol assignments in the linker script
|
// silently override defined symbols in object files. We are
|
// silently override defined symbols in object files. We are
|
// compatible. FIXME: Should we issue a warning?
|
// compatible. FIXME: Should we issue a warning?
|
|
|
void
|
void
|
Symbol_assignment::add_to_table(Symbol_table* symtab)
|
Symbol_assignment::add_to_table(Symbol_table* symtab)
|
{
|
{
|
elfcpp::STV vis = this->hidden_ ? elfcpp::STV_HIDDEN : elfcpp::STV_DEFAULT;
|
elfcpp::STV vis = this->hidden_ ? elfcpp::STV_HIDDEN : elfcpp::STV_DEFAULT;
|
this->sym_ = symtab->define_as_constant(this->name_.c_str(),
|
this->sym_ = symtab->define_as_constant(this->name_.c_str(),
|
NULL, // version
|
NULL, // version
|
(this->is_defsym_
|
(this->is_defsym_
|
? Symbol_table::DEFSYM
|
? Symbol_table::DEFSYM
|
: Symbol_table::SCRIPT),
|
: Symbol_table::SCRIPT),
|
0, // value
|
0, // value
|
0, // size
|
0, // size
|
elfcpp::STT_NOTYPE,
|
elfcpp::STT_NOTYPE,
|
elfcpp::STB_GLOBAL,
|
elfcpp::STB_GLOBAL,
|
vis,
|
vis,
|
0, // nonvis
|
0, // nonvis
|
this->provide_,
|
this->provide_,
|
true); // force_override
|
true); // force_override
|
}
|
}
|
|
|
// Finalize a symbol value.
|
// Finalize a symbol value.
|
|
|
void
|
void
|
Symbol_assignment::finalize(Symbol_table* symtab, const Layout* layout)
|
Symbol_assignment::finalize(Symbol_table* symtab, const Layout* layout)
|
{
|
{
|
this->finalize_maybe_dot(symtab, layout, false, 0, NULL);
|
this->finalize_maybe_dot(symtab, layout, false, 0, NULL);
|
}
|
}
|
|
|
// Finalize a symbol value which can refer to the dot symbol.
|
// Finalize a symbol value which can refer to the dot symbol.
|
|
|
void
|
void
|
Symbol_assignment::finalize_with_dot(Symbol_table* symtab,
|
Symbol_assignment::finalize_with_dot(Symbol_table* symtab,
|
const Layout* layout,
|
const Layout* layout,
|
uint64_t dot_value,
|
uint64_t dot_value,
|
Output_section* dot_section)
|
Output_section* dot_section)
|
{
|
{
|
this->finalize_maybe_dot(symtab, layout, true, dot_value, dot_section);
|
this->finalize_maybe_dot(symtab, layout, true, dot_value, dot_section);
|
}
|
}
|
|
|
// Finalize a symbol value, internal version.
|
// Finalize a symbol value, internal version.
|
|
|
void
|
void
|
Symbol_assignment::finalize_maybe_dot(Symbol_table* symtab,
|
Symbol_assignment::finalize_maybe_dot(Symbol_table* symtab,
|
const Layout* layout,
|
const Layout* layout,
|
bool is_dot_available,
|
bool is_dot_available,
|
uint64_t dot_value,
|
uint64_t dot_value,
|
Output_section* dot_section)
|
Output_section* dot_section)
|
{
|
{
|
// If we were only supposed to provide this symbol, the sym_ field
|
// If we were only supposed to provide this symbol, the sym_ field
|
// will be NULL if the symbol was not referenced.
|
// will be NULL if the symbol was not referenced.
|
if (this->sym_ == NULL)
|
if (this->sym_ == NULL)
|
{
|
{
|
gold_assert(this->provide_);
|
gold_assert(this->provide_);
|
return;
|
return;
|
}
|
}
|
|
|
if (parameters->target().get_size() == 32)
|
if (parameters->target().get_size() == 32)
|
{
|
{
|
#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
|
#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
|
this->sized_finalize<32>(symtab, layout, is_dot_available, dot_value,
|
this->sized_finalize<32>(symtab, layout, is_dot_available, dot_value,
|
dot_section);
|
dot_section);
|
#else
|
#else
|
gold_unreachable();
|
gold_unreachable();
|
#endif
|
#endif
|
}
|
}
|
else if (parameters->target().get_size() == 64)
|
else if (parameters->target().get_size() == 64)
|
{
|
{
|
#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
|
#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
|
this->sized_finalize<64>(symtab, layout, is_dot_available, dot_value,
|
this->sized_finalize<64>(symtab, layout, is_dot_available, dot_value,
|
dot_section);
|
dot_section);
|
#else
|
#else
|
gold_unreachable();
|
gold_unreachable();
|
#endif
|
#endif
|
}
|
}
|
else
|
else
|
gold_unreachable();
|
gold_unreachable();
|
}
|
}
|
|
|
template<int size>
|
template<int size>
|
void
|
void
|
Symbol_assignment::sized_finalize(Symbol_table* symtab, const Layout* layout,
|
Symbol_assignment::sized_finalize(Symbol_table* symtab, const Layout* layout,
|
bool is_dot_available, uint64_t dot_value,
|
bool is_dot_available, uint64_t dot_value,
|
Output_section* dot_section)
|
Output_section* dot_section)
|
{
|
{
|
Output_section* section;
|
Output_section* section;
|
uint64_t final_val = this->val_->eval_maybe_dot(symtab, layout, true,
|
uint64_t final_val = this->val_->eval_maybe_dot(symtab, layout, true,
|
is_dot_available,
|
is_dot_available,
|
dot_value, dot_section,
|
dot_value, dot_section,
|
§ion, NULL);
|
§ion, NULL);
|
Sized_symbol<size>* ssym = symtab->get_sized_symbol<size>(this->sym_);
|
Sized_symbol<size>* ssym = symtab->get_sized_symbol<size>(this->sym_);
|
ssym->set_value(final_val);
|
ssym->set_value(final_val);
|
if (section != NULL)
|
if (section != NULL)
|
ssym->set_output_section(section);
|
ssym->set_output_section(section);
|
}
|
}
|
|
|
// Set the symbol value if the expression yields an absolute value.
|
// Set the symbol value if the expression yields an absolute value.
|
|
|
void
|
void
|
Symbol_assignment::set_if_absolute(Symbol_table* symtab, const Layout* layout,
|
Symbol_assignment::set_if_absolute(Symbol_table* symtab, const Layout* layout,
|
bool is_dot_available, uint64_t dot_value)
|
bool is_dot_available, uint64_t dot_value)
|
{
|
{
|
if (this->sym_ == NULL)
|
if (this->sym_ == NULL)
|
return;
|
return;
|
|
|
Output_section* val_section;
|
Output_section* val_section;
|
uint64_t val = this->val_->eval_maybe_dot(symtab, layout, false,
|
uint64_t val = this->val_->eval_maybe_dot(symtab, layout, false,
|
is_dot_available, dot_value,
|
is_dot_available, dot_value,
|
NULL, &val_section, NULL);
|
NULL, &val_section, NULL);
|
if (val_section != NULL)
|
if (val_section != NULL)
|
return;
|
return;
|
|
|
if (parameters->target().get_size() == 32)
|
if (parameters->target().get_size() == 32)
|
{
|
{
|
#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
|
#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
|
Sized_symbol<32>* ssym = symtab->get_sized_symbol<32>(this->sym_);
|
Sized_symbol<32>* ssym = symtab->get_sized_symbol<32>(this->sym_);
|
ssym->set_value(val);
|
ssym->set_value(val);
|
#else
|
#else
|
gold_unreachable();
|
gold_unreachable();
|
#endif
|
#endif
|
}
|
}
|
else if (parameters->target().get_size() == 64)
|
else if (parameters->target().get_size() == 64)
|
{
|
{
|
#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
|
#if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
|
Sized_symbol<64>* ssym = symtab->get_sized_symbol<64>(this->sym_);
|
Sized_symbol<64>* ssym = symtab->get_sized_symbol<64>(this->sym_);
|
ssym->set_value(val);
|
ssym->set_value(val);
|
#else
|
#else
|
gold_unreachable();
|
gold_unreachable();
|
#endif
|
#endif
|
}
|
}
|
else
|
else
|
gold_unreachable();
|
gold_unreachable();
|
}
|
}
|
|
|
// Print for debugging.
|
// Print for debugging.
|
|
|
void
|
void
|
Symbol_assignment::print(FILE* f) const
|
Symbol_assignment::print(FILE* f) const
|
{
|
{
|
if (this->provide_ && this->hidden_)
|
if (this->provide_ && this->hidden_)
|
fprintf(f, "PROVIDE_HIDDEN(");
|
fprintf(f, "PROVIDE_HIDDEN(");
|
else if (this->provide_)
|
else if (this->provide_)
|
fprintf(f, "PROVIDE(");
|
fprintf(f, "PROVIDE(");
|
else if (this->hidden_)
|
else if (this->hidden_)
|
gold_unreachable();
|
gold_unreachable();
|
|
|
fprintf(f, "%s = ", this->name_.c_str());
|
fprintf(f, "%s = ", this->name_.c_str());
|
this->val_->print(f);
|
this->val_->print(f);
|
|
|
if (this->provide_ || this->hidden_)
|
if (this->provide_ || this->hidden_)
|
fprintf(f, ")");
|
fprintf(f, ")");
|
|
|
fprintf(f, "\n");
|
fprintf(f, "\n");
|
}
|
}
|
|
|
// Class Script_assertion.
|
// Class Script_assertion.
|
|
|
// Check the assertion.
|
// Check the assertion.
|
|
|
void
|
void
|
Script_assertion::check(const Symbol_table* symtab, const Layout* layout)
|
Script_assertion::check(const Symbol_table* symtab, const Layout* layout)
|
{
|
{
|
if (!this->check_->eval(symtab, layout, true))
|
if (!this->check_->eval(symtab, layout, true))
|
gold_error("%s", this->message_.c_str());
|
gold_error("%s", this->message_.c_str());
|
}
|
}
|
|
|
// Print for debugging.
|
// Print for debugging.
|
|
|
void
|
void
|
Script_assertion::print(FILE* f) const
|
Script_assertion::print(FILE* f) const
|
{
|
{
|
fprintf(f, "ASSERT(");
|
fprintf(f, "ASSERT(");
|
this->check_->print(f);
|
this->check_->print(f);
|
fprintf(f, ", \"%s\")\n", this->message_.c_str());
|
fprintf(f, ", \"%s\")\n", this->message_.c_str());
|
}
|
}
|
|
|
// Class Script_options.
|
// Class Script_options.
|
|
|
Script_options::Script_options()
|
Script_options::Script_options()
|
: entry_(), symbol_assignments_(), symbol_definitions_(),
|
: entry_(), symbol_assignments_(), symbol_definitions_(),
|
symbol_references_(), version_script_info_(), script_sections_()
|
symbol_references_(), version_script_info_(), script_sections_()
|
{
|
{
|
}
|
}
|
|
|
// Returns true if NAME is on the list of symbol assignments waiting
|
// Returns true if NAME is on the list of symbol assignments waiting
|
// to be processed.
|
// to be processed.
|
|
|
bool
|
bool
|
Script_options::is_pending_assignment(const char* name)
|
Script_options::is_pending_assignment(const char* name)
|
{
|
{
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
p != this->symbol_assignments_.end();
|
p != this->symbol_assignments_.end();
|
++p)
|
++p)
|
if ((*p)->name() == name)
|
if ((*p)->name() == name)
|
return true;
|
return true;
|
return false;
|
return false;
|
}
|
}
|
|
|
// Add a symbol to be defined.
|
// Add a symbol to be defined.
|
|
|
void
|
void
|
Script_options::add_symbol_assignment(const char* name, size_t length,
|
Script_options::add_symbol_assignment(const char* name, size_t length,
|
bool is_defsym, Expression* value,
|
bool is_defsym, Expression* value,
|
bool provide, bool hidden)
|
bool provide, bool hidden)
|
{
|
{
|
if (length != 1 || name[0] != '.')
|
if (length != 1 || name[0] != '.')
|
{
|
{
|
if (this->script_sections_.in_sections_clause())
|
if (this->script_sections_.in_sections_clause())
|
{
|
{
|
gold_assert(!is_defsym);
|
gold_assert(!is_defsym);
|
this->script_sections_.add_symbol_assignment(name, length, value,
|
this->script_sections_.add_symbol_assignment(name, length, value,
|
provide, hidden);
|
provide, hidden);
|
}
|
}
|
else
|
else
|
{
|
{
|
Symbol_assignment* p = new Symbol_assignment(name, length, is_defsym,
|
Symbol_assignment* p = new Symbol_assignment(name, length, is_defsym,
|
value, provide, hidden);
|
value, provide, hidden);
|
this->symbol_assignments_.push_back(p);
|
this->symbol_assignments_.push_back(p);
|
}
|
}
|
|
|
if (!provide)
|
if (!provide)
|
{
|
{
|
std::string n(name, length);
|
std::string n(name, length);
|
this->symbol_definitions_.insert(n);
|
this->symbol_definitions_.insert(n);
|
this->symbol_references_.erase(n);
|
this->symbol_references_.erase(n);
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if (provide || hidden)
|
if (provide || hidden)
|
gold_error(_("invalid use of PROVIDE for dot symbol"));
|
gold_error(_("invalid use of PROVIDE for dot symbol"));
|
|
|
// The GNU linker permits assignments to dot outside of SECTIONS
|
// The GNU linker permits assignments to dot outside of SECTIONS
|
// clauses and treats them as occurring inside, so we don't
|
// clauses and treats them as occurring inside, so we don't
|
// check in_sections_clause here.
|
// check in_sections_clause here.
|
this->script_sections_.add_dot_assignment(value);
|
this->script_sections_.add_dot_assignment(value);
|
}
|
}
|
}
|
}
|
|
|
// Add a reference to a symbol.
|
// Add a reference to a symbol.
|
|
|
void
|
void
|
Script_options::add_symbol_reference(const char* name, size_t length)
|
Script_options::add_symbol_reference(const char* name, size_t length)
|
{
|
{
|
if (length != 1 || name[0] != '.')
|
if (length != 1 || name[0] != '.')
|
{
|
{
|
std::string n(name, length);
|
std::string n(name, length);
|
if (this->symbol_definitions_.find(n) == this->symbol_definitions_.end())
|
if (this->symbol_definitions_.find(n) == this->symbol_definitions_.end())
|
this->symbol_references_.insert(n);
|
this->symbol_references_.insert(n);
|
}
|
}
|
}
|
}
|
|
|
// Add an assertion.
|
// Add an assertion.
|
|
|
void
|
void
|
Script_options::add_assertion(Expression* check, const char* message,
|
Script_options::add_assertion(Expression* check, const char* message,
|
size_t messagelen)
|
size_t messagelen)
|
{
|
{
|
if (this->script_sections_.in_sections_clause())
|
if (this->script_sections_.in_sections_clause())
|
this->script_sections_.add_assertion(check, message, messagelen);
|
this->script_sections_.add_assertion(check, message, messagelen);
|
else
|
else
|
{
|
{
|
Script_assertion* p = new Script_assertion(check, message, messagelen);
|
Script_assertion* p = new Script_assertion(check, message, messagelen);
|
this->assertions_.push_back(p);
|
this->assertions_.push_back(p);
|
}
|
}
|
}
|
}
|
|
|
// Create sections required by any linker scripts.
|
// Create sections required by any linker scripts.
|
|
|
void
|
void
|
Script_options::create_script_sections(Layout* layout)
|
Script_options::create_script_sections(Layout* layout)
|
{
|
{
|
if (this->saw_sections_clause())
|
if (this->saw_sections_clause())
|
this->script_sections_.create_sections(layout);
|
this->script_sections_.create_sections(layout);
|
}
|
}
|
|
|
// Add any symbols we are defining to the symbol table.
|
// Add any symbols we are defining to the symbol table.
|
|
|
void
|
void
|
Script_options::add_symbols_to_table(Symbol_table* symtab)
|
Script_options::add_symbols_to_table(Symbol_table* symtab)
|
{
|
{
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
p != this->symbol_assignments_.end();
|
p != this->symbol_assignments_.end();
|
++p)
|
++p)
|
(*p)->add_to_table(symtab);
|
(*p)->add_to_table(symtab);
|
this->script_sections_.add_symbols_to_table(symtab);
|
this->script_sections_.add_symbols_to_table(symtab);
|
}
|
}
|
|
|
// Finalize symbol values. Also check assertions.
|
// Finalize symbol values. Also check assertions.
|
|
|
void
|
void
|
Script_options::finalize_symbols(Symbol_table* symtab, const Layout* layout)
|
Script_options::finalize_symbols(Symbol_table* symtab, const Layout* layout)
|
{
|
{
|
// We finalize the symbols defined in SECTIONS first, because they
|
// We finalize the symbols defined in SECTIONS first, because they
|
// are the ones which may have changed. This way if symbol outside
|
// are the ones which may have changed. This way if symbol outside
|
// SECTIONS are defined in terms of symbols inside SECTIONS, they
|
// SECTIONS are defined in terms of symbols inside SECTIONS, they
|
// will get the right value.
|
// will get the right value.
|
this->script_sections_.finalize_symbols(symtab, layout);
|
this->script_sections_.finalize_symbols(symtab, layout);
|
|
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
p != this->symbol_assignments_.end();
|
p != this->symbol_assignments_.end();
|
++p)
|
++p)
|
(*p)->finalize(symtab, layout);
|
(*p)->finalize(symtab, layout);
|
|
|
for (Assertions::iterator p = this->assertions_.begin();
|
for (Assertions::iterator p = this->assertions_.begin();
|
p != this->assertions_.end();
|
p != this->assertions_.end();
|
++p)
|
++p)
|
(*p)->check(symtab, layout);
|
(*p)->check(symtab, layout);
|
}
|
}
|
|
|
// Set section addresses. We set all the symbols which have absolute
|
// Set section addresses. We set all the symbols which have absolute
|
// values. Then we let the SECTIONS clause do its thing. This
|
// values. Then we let the SECTIONS clause do its thing. This
|
// returns the segment which holds the file header and segment
|
// returns the segment which holds the file header and segment
|
// headers, if any.
|
// headers, if any.
|
|
|
Output_segment*
|
Output_segment*
|
Script_options::set_section_addresses(Symbol_table* symtab, Layout* layout)
|
Script_options::set_section_addresses(Symbol_table* symtab, Layout* layout)
|
{
|
{
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
for (Symbol_assignments::iterator p = this->symbol_assignments_.begin();
|
p != this->symbol_assignments_.end();
|
p != this->symbol_assignments_.end();
|
++p)
|
++p)
|
(*p)->set_if_absolute(symtab, layout, false, 0);
|
(*p)->set_if_absolute(symtab, layout, false, 0);
|
|
|
return this->script_sections_.set_section_addresses(symtab, layout);
|
return this->script_sections_.set_section_addresses(symtab, layout);
|
}
|
}
|
|
|
// This class holds data passed through the parser to the lexer and to
|
// This class holds data passed through the parser to the lexer and to
|
// the parser support functions. This avoids global variables. We
|
// the parser support functions. This avoids global variables. We
|
// can't use global variables because we need not be called by a
|
// can't use global variables because we need not be called by a
|
// singleton thread.
|
// singleton thread.
|
|
|
class Parser_closure
|
class Parser_closure
|
{
|
{
|
public:
|
public:
|
Parser_closure(const char* filename,
|
Parser_closure(const char* filename,
|
const Position_dependent_options& posdep_options,
|
const Position_dependent_options& posdep_options,
|
bool parsing_defsym, bool in_group, bool is_in_sysroot,
|
bool parsing_defsym, bool in_group, bool is_in_sysroot,
|
Command_line* command_line,
|
Command_line* command_line,
|
Script_options* script_options,
|
Script_options* script_options,
|
Lex* lex,
|
Lex* lex,
|
bool skip_on_incompatible_target,
|
bool skip_on_incompatible_target,
|
Script_info* script_info)
|
Script_info* script_info)
|
: filename_(filename), posdep_options_(posdep_options),
|
: filename_(filename), posdep_options_(posdep_options),
|
parsing_defsym_(parsing_defsym), in_group_(in_group),
|
parsing_defsym_(parsing_defsym), in_group_(in_group),
|
is_in_sysroot_(is_in_sysroot),
|
is_in_sysroot_(is_in_sysroot),
|
skip_on_incompatible_target_(skip_on_incompatible_target),
|
skip_on_incompatible_target_(skip_on_incompatible_target),
|
found_incompatible_target_(false),
|
found_incompatible_target_(false),
|
command_line_(command_line), script_options_(script_options),
|
command_line_(command_line), script_options_(script_options),
|
version_script_info_(script_options->version_script_info()),
|
version_script_info_(script_options->version_script_info()),
|
lex_(lex), lineno_(0), charpos_(0), lex_mode_stack_(), inputs_(NULL),
|
lex_(lex), lineno_(0), charpos_(0), lex_mode_stack_(), inputs_(NULL),
|
script_info_(script_info)
|
script_info_(script_info)
|
{
|
{
|
// We start out processing C symbols in the default lex mode.
|
// We start out processing C symbols in the default lex mode.
|
this->language_stack_.push_back(Version_script_info::LANGUAGE_C);
|
this->language_stack_.push_back(Version_script_info::LANGUAGE_C);
|
this->lex_mode_stack_.push_back(lex->mode());
|
this->lex_mode_stack_.push_back(lex->mode());
|
}
|
}
|
|
|
// Return the file name.
|
// Return the file name.
|
const char*
|
const char*
|
filename() const
|
filename() const
|
{ return this->filename_; }
|
{ return this->filename_; }
|
|
|
// Return the position dependent options. The caller may modify
|
// Return the position dependent options. The caller may modify
|
// this.
|
// this.
|
Position_dependent_options&
|
Position_dependent_options&
|
position_dependent_options()
|
position_dependent_options()
|
{ return this->posdep_options_; }
|
{ return this->posdep_options_; }
|
|
|
// Whether we are parsing a --defsym.
|
// Whether we are parsing a --defsym.
|
bool
|
bool
|
parsing_defsym() const
|
parsing_defsym() const
|
{ return this->parsing_defsym_; }
|
{ return this->parsing_defsym_; }
|
|
|
// Return whether this script is being run in a group.
|
// Return whether this script is being run in a group.
|
bool
|
bool
|
in_group() const
|
in_group() const
|
{ return this->in_group_; }
|
{ return this->in_group_; }
|
|
|
// Return whether this script was found using a directory in the
|
// Return whether this script was found using a directory in the
|
// sysroot.
|
// sysroot.
|
bool
|
bool
|
is_in_sysroot() const
|
is_in_sysroot() const
|
{ return this->is_in_sysroot_; }
|
{ return this->is_in_sysroot_; }
|
|
|
// Whether to skip to the next file with the same name if we find an
|
// Whether to skip to the next file with the same name if we find an
|
// incompatible target in an OUTPUT_FORMAT statement.
|
// incompatible target in an OUTPUT_FORMAT statement.
|
bool
|
bool
|
skip_on_incompatible_target() const
|
skip_on_incompatible_target() const
|
{ return this->skip_on_incompatible_target_; }
|
{ return this->skip_on_incompatible_target_; }
|
|
|
// Stop skipping to the next file on an incompatible target. This
|
// Stop skipping to the next file on an incompatible target. This
|
// is called when we make some unrevocable change to the data
|
// is called when we make some unrevocable change to the data
|
// structures.
|
// structures.
|
void
|
void
|
clear_skip_on_incompatible_target()
|
clear_skip_on_incompatible_target()
|
{ this->skip_on_incompatible_target_ = false; }
|
{ this->skip_on_incompatible_target_ = false; }
|
|
|
// Whether we found an incompatible target in an OUTPUT_FORMAT
|
// Whether we found an incompatible target in an OUTPUT_FORMAT
|
// statement.
|
// statement.
|
bool
|
bool
|
found_incompatible_target() const
|
found_incompatible_target() const
|
{ return this->found_incompatible_target_; }
|
{ return this->found_incompatible_target_; }
|
|
|
// Note that we found an incompatible target.
|
// Note that we found an incompatible target.
|
void
|
void
|
set_found_incompatible_target()
|
set_found_incompatible_target()
|
{ this->found_incompatible_target_ = true; }
|
{ this->found_incompatible_target_ = true; }
|
|
|
// Returns the Command_line structure passed in at constructor time.
|
// Returns the Command_line structure passed in at constructor time.
|
// This value may be NULL. The caller may modify this, which modifies
|
// This value may be NULL. The caller may modify this, which modifies
|
// the passed-in Command_line object (not a copy).
|
// the passed-in Command_line object (not a copy).
|
Command_line*
|
Command_line*
|
command_line()
|
command_line()
|
{ return this->command_line_; }
|
{ return this->command_line_; }
|
|
|
// Return the options which may be set by a script.
|
// Return the options which may be set by a script.
|
Script_options*
|
Script_options*
|
script_options()
|
script_options()
|
{ return this->script_options_; }
|
{ return this->script_options_; }
|
|
|
// Return the object in which version script information should be stored.
|
// Return the object in which version script information should be stored.
|
Version_script_info*
|
Version_script_info*
|
version_script()
|
version_script()
|
{ return this->version_script_info_; }
|
{ return this->version_script_info_; }
|
|
|
// Return the next token, and advance.
|
// Return the next token, and advance.
|
const Token*
|
const Token*
|
next_token()
|
next_token()
|
{
|
{
|
const Token* token = this->lex_->next_token();
|
const Token* token = this->lex_->next_token();
|
this->lineno_ = token->lineno();
|
this->lineno_ = token->lineno();
|
this->charpos_ = token->charpos();
|
this->charpos_ = token->charpos();
|
return token;
|
return token;
|
}
|
}
|
|
|
// Set a new lexer mode, pushing the current one.
|
// Set a new lexer mode, pushing the current one.
|
void
|
void
|
push_lex_mode(Lex::Mode mode)
|
push_lex_mode(Lex::Mode mode)
|
{
|
{
|
this->lex_mode_stack_.push_back(this->lex_->mode());
|
this->lex_mode_stack_.push_back(this->lex_->mode());
|
this->lex_->set_mode(mode);
|
this->lex_->set_mode(mode);
|
}
|
}
|
|
|
// Pop the lexer mode.
|
// Pop the lexer mode.
|
void
|
void
|
pop_lex_mode()
|
pop_lex_mode()
|
{
|
{
|
gold_assert(!this->lex_mode_stack_.empty());
|
gold_assert(!this->lex_mode_stack_.empty());
|
this->lex_->set_mode(this->lex_mode_stack_.back());
|
this->lex_->set_mode(this->lex_mode_stack_.back());
|
this->lex_mode_stack_.pop_back();
|
this->lex_mode_stack_.pop_back();
|
}
|
}
|
|
|
// Return the current lexer mode.
|
// Return the current lexer mode.
|
Lex::Mode
|
Lex::Mode
|
lex_mode() const
|
lex_mode() const
|
{ return this->lex_mode_stack_.back(); }
|
{ return this->lex_mode_stack_.back(); }
|
|
|
// Return the line number of the last token.
|
// Return the line number of the last token.
|
int
|
int
|
lineno() const
|
lineno() const
|
{ return this->lineno_; }
|
{ return this->lineno_; }
|
|
|
// Return the character position in the line of the last token.
|
// Return the character position in the line of the last token.
|
int
|
int
|
charpos() const
|
charpos() const
|
{ return this->charpos_; }
|
{ return this->charpos_; }
|
|
|
// Return the list of input files, creating it if necessary. This
|
// Return the list of input files, creating it if necessary. This
|
// is a space leak--we never free the INPUTS_ pointer.
|
// is a space leak--we never free the INPUTS_ pointer.
|
Input_arguments*
|
Input_arguments*
|
inputs()
|
inputs()
|
{
|
{
|
if (this->inputs_ == NULL)
|
if (this->inputs_ == NULL)
|
this->inputs_ = new Input_arguments();
|
this->inputs_ = new Input_arguments();
|
return this->inputs_;
|
return this->inputs_;
|
}
|
}
|
|
|
// Return whether we saw any input files.
|
// Return whether we saw any input files.
|
bool
|
bool
|
saw_inputs() const
|
saw_inputs() const
|
{ return this->inputs_ != NULL && !this->inputs_->empty(); }
|
{ return this->inputs_ != NULL && !this->inputs_->empty(); }
|
|
|
// Return the current language being processed in a version script
|
// Return the current language being processed in a version script
|
// (eg, "C++"). The empty string represents unmangled C names.
|
// (eg, "C++"). The empty string represents unmangled C names.
|
Version_script_info::Language
|
Version_script_info::Language
|
get_current_language() const
|
get_current_language() const
|
{ return this->language_stack_.back(); }
|
{ return this->language_stack_.back(); }
|
|
|
// Push a language onto the stack when entering an extern block.
|
// Push a language onto the stack when entering an extern block.
|
void
|
void
|
push_language(Version_script_info::Language lang)
|
push_language(Version_script_info::Language lang)
|
{ this->language_stack_.push_back(lang); }
|
{ this->language_stack_.push_back(lang); }
|
|
|
// Pop a language off of the stack when exiting an extern block.
|
// Pop a language off of the stack when exiting an extern block.
|
void
|
void
|
pop_language()
|
pop_language()
|
{
|
{
|
gold_assert(!this->language_stack_.empty());
|
gold_assert(!this->language_stack_.empty());
|
this->language_stack_.pop_back();
|
this->language_stack_.pop_back();
|
}
|
}
|
|
|
// Return a pointer to the incremental info.
|
// Return a pointer to the incremental info.
|
Script_info*
|
Script_info*
|
script_info()
|
script_info()
|
{ return this->script_info_; }
|
{ return this->script_info_; }
|
|
|
private:
|
private:
|
// The name of the file we are reading.
|
// The name of the file we are reading.
|
const char* filename_;
|
const char* filename_;
|
// The position dependent options.
|
// The position dependent options.
|
Position_dependent_options posdep_options_;
|
Position_dependent_options posdep_options_;
|
// True if we are parsing a --defsym.
|
// True if we are parsing a --defsym.
|
bool parsing_defsym_;
|
bool parsing_defsym_;
|
// Whether we are currently in a --start-group/--end-group.
|
// Whether we are currently in a --start-group/--end-group.
|
bool in_group_;
|
bool in_group_;
|
// Whether the script was found in a sysrooted directory.
|
// Whether the script was found in a sysrooted directory.
|
bool is_in_sysroot_;
|
bool is_in_sysroot_;
|
// If this is true, then if we find an OUTPUT_FORMAT with an
|
// If this is true, then if we find an OUTPUT_FORMAT with an
|
// incompatible target, then we tell the parser to abort so that we
|
// incompatible target, then we tell the parser to abort so that we
|
// can search for the next file with the same name.
|
// can search for the next file with the same name.
|
bool skip_on_incompatible_target_;
|
bool skip_on_incompatible_target_;
|
// True if we found an OUTPUT_FORMAT with an incompatible target.
|
// True if we found an OUTPUT_FORMAT with an incompatible target.
|
bool found_incompatible_target_;
|
bool found_incompatible_target_;
|
// May be NULL if the user chooses not to pass one in.
|
// May be NULL if the user chooses not to pass one in.
|
Command_line* command_line_;
|
Command_line* command_line_;
|
// Options which may be set from any linker script.
|
// Options which may be set from any linker script.
|
Script_options* script_options_;
|
Script_options* script_options_;
|
// Information parsed from a version script.
|
// Information parsed from a version script.
|
Version_script_info* version_script_info_;
|
Version_script_info* version_script_info_;
|
// The lexer.
|
// The lexer.
|
Lex* lex_;
|
Lex* lex_;
|
// The line number of the last token returned by next_token.
|
// The line number of the last token returned by next_token.
|
int lineno_;
|
int lineno_;
|
// The column number of the last token returned by next_token.
|
// The column number of the last token returned by next_token.
|
int charpos_;
|
int charpos_;
|
// A stack of lexer modes.
|
// A stack of lexer modes.
|
std::vector<Lex::Mode> lex_mode_stack_;
|
std::vector<Lex::Mode> lex_mode_stack_;
|
// A stack of which extern/language block we're inside. Can be C++,
|
// A stack of which extern/language block we're inside. Can be C++,
|
// java, or empty for C.
|
// java, or empty for C.
|
std::vector<Version_script_info::Language> language_stack_;
|
std::vector<Version_script_info::Language> language_stack_;
|
// New input files found to add to the link.
|
// New input files found to add to the link.
|
Input_arguments* inputs_;
|
Input_arguments* inputs_;
|
// Pointer to incremental linking info.
|
// Pointer to incremental linking info.
|
Script_info* script_info_;
|
Script_info* script_info_;
|
};
|
};
|
|
|
// FILE was found as an argument on the command line. Try to read it
|
// FILE was found as an argument on the command line. Try to read it
|
// as a script. Return true if the file was handled.
|
// as a script. Return true if the file was handled.
|
|
|
bool
|
bool
|
read_input_script(Workqueue* workqueue, Symbol_table* symtab, Layout* layout,
|
read_input_script(Workqueue* workqueue, Symbol_table* symtab, Layout* layout,
|
Dirsearch* dirsearch, int dirindex,
|
Dirsearch* dirsearch, int dirindex,
|
Input_objects* input_objects, Mapfile* mapfile,
|
Input_objects* input_objects, Mapfile* mapfile,
|
Input_group* input_group,
|
Input_group* input_group,
|
const Input_argument* input_argument,
|
const Input_argument* input_argument,
|
Input_file* input_file, Task_token* next_blocker,
|
Input_file* input_file, Task_token* next_blocker,
|
bool* used_next_blocker)
|
bool* used_next_blocker)
|
{
|
{
|
*used_next_blocker = false;
|
*used_next_blocker = false;
|
|
|
std::string input_string;
|
std::string input_string;
|
Lex::read_file(input_file, &input_string);
|
Lex::read_file(input_file, &input_string);
|
|
|
Lex lex(input_string.c_str(), input_string.length(), PARSING_LINKER_SCRIPT);
|
Lex lex(input_string.c_str(), input_string.length(), PARSING_LINKER_SCRIPT);
|
|
|
Script_info* script_info = NULL;
|
Script_info* script_info = NULL;
|
if (layout->incremental_inputs() != NULL)
|
if (layout->incremental_inputs() != NULL)
|
{
|
{
|
const std::string& filename = input_file->filename();
|
const std::string& filename = input_file->filename();
|
Timespec mtime = input_file->file().get_mtime();
|
Timespec mtime = input_file->file().get_mtime();
|
unsigned int arg_serial = input_argument->file().arg_serial();
|
unsigned int arg_serial = input_argument->file().arg_serial();
|
script_info = new Script_info(filename);
|
script_info = new Script_info(filename);
|
layout->incremental_inputs()->report_script(script_info, arg_serial,
|
layout->incremental_inputs()->report_script(script_info, arg_serial,
|
mtime);
|
mtime);
|
}
|
}
|
|
|
Parser_closure closure(input_file->filename().c_str(),
|
Parser_closure closure(input_file->filename().c_str(),
|
input_argument->file().options(),
|
input_argument->file().options(),
|
false,
|
false,
|
input_group != NULL,
|
input_group != NULL,
|
input_file->is_in_sysroot(),
|
input_file->is_in_sysroot(),
|
NULL,
|
NULL,
|
layout->script_options(),
|
layout->script_options(),
|
&lex,
|
&lex,
|
input_file->will_search_for(),
|
input_file->will_search_for(),
|
script_info);
|
script_info);
|
|
|
bool old_saw_sections_clause =
|
bool old_saw_sections_clause =
|
layout->script_options()->saw_sections_clause();
|
layout->script_options()->saw_sections_clause();
|
|
|
if (yyparse(&closure) != 0)
|
if (yyparse(&closure) != 0)
|
{
|
{
|
if (closure.found_incompatible_target())
|
if (closure.found_incompatible_target())
|
{
|
{
|
Read_symbols::incompatible_warning(input_argument, input_file);
|
Read_symbols::incompatible_warning(input_argument, input_file);
|
Read_symbols::requeue(workqueue, input_objects, symtab, layout,
|
Read_symbols::requeue(workqueue, input_objects, symtab, layout,
|
dirsearch, dirindex, mapfile, input_argument,
|
dirsearch, dirindex, mapfile, input_argument,
|
input_group, next_blocker);
|
input_group, next_blocker);
|
return true;
|
return true;
|
}
|
}
|
return false;
|
return false;
|
}
|
}
|
|
|
if (!old_saw_sections_clause
|
if (!old_saw_sections_clause
|
&& layout->script_options()->saw_sections_clause()
|
&& layout->script_options()->saw_sections_clause()
|
&& layout->have_added_input_section())
|
&& layout->have_added_input_section())
|
gold_error(_("%s: SECTIONS seen after other input files; try -T/--script"),
|
gold_error(_("%s: SECTIONS seen after other input files; try -T/--script"),
|
input_file->filename().c_str());
|
input_file->filename().c_str());
|
|
|
if (!closure.saw_inputs())
|
if (!closure.saw_inputs())
|
return true;
|
return true;
|
|
|
Task_token* this_blocker = NULL;
|
Task_token* this_blocker = NULL;
|
for (Input_arguments::const_iterator p = closure.inputs()->begin();
|
for (Input_arguments::const_iterator p = closure.inputs()->begin();
|
p != closure.inputs()->end();
|
p != closure.inputs()->end();
|
++p)
|
++p)
|
{
|
{
|
Task_token* nb;
|
Task_token* nb;
|
if (p + 1 == closure.inputs()->end())
|
if (p + 1 == closure.inputs()->end())
|
nb = next_blocker;
|
nb = next_blocker;
|
else
|
else
|
{
|
{
|
nb = new Task_token(true);
|
nb = new Task_token(true);
|
nb->add_blocker();
|
nb->add_blocker();
|
}
|
}
|
workqueue->queue_soon(new Read_symbols(input_objects, symtab,
|
workqueue->queue_soon(new Read_symbols(input_objects, symtab,
|
layout, dirsearch, 0, mapfile, &*p,
|
layout, dirsearch, 0, mapfile, &*p,
|
input_group, NULL, this_blocker, nb));
|
input_group, NULL, this_blocker, nb));
|
this_blocker = nb;
|
this_blocker = nb;
|
}
|
}
|
|
|
*used_next_blocker = true;
|
*used_next_blocker = true;
|
|
|
return true;
|
return true;
|
}
|
}
|
|
|
// Helper function for read_version_script() and
|
// Helper function for read_version_script() and
|
// read_commandline_script(). Processes the given file in the mode
|
// read_commandline_script(). Processes the given file in the mode
|
// indicated by first_token and lex_mode.
|
// indicated by first_token and lex_mode.
|
|
|
static bool
|
static bool
|
read_script_file(const char* filename, Command_line* cmdline,
|
read_script_file(const char* filename, Command_line* cmdline,
|
Script_options* script_options,
|
Script_options* script_options,
|
int first_token, Lex::Mode lex_mode)
|
int first_token, Lex::Mode lex_mode)
|
{
|
{
|
// TODO: if filename is a relative filename, search for it manually
|
// TODO: if filename is a relative filename, search for it manually
|
// using "." + cmdline->options()->search_path() -- not dirsearch.
|
// using "." + cmdline->options()->search_path() -- not dirsearch.
|
Dirsearch dirsearch;
|
Dirsearch dirsearch;
|
|
|
// The file locking code wants to record a Task, but we haven't
|
// The file locking code wants to record a Task, but we haven't
|
// started the workqueue yet. This is only for debugging purposes,
|
// started the workqueue yet. This is only for debugging purposes,
|
// so we invent a fake value.
|
// so we invent a fake value.
|
const Task* task = reinterpret_cast<const Task*>(-1);
|
const Task* task = reinterpret_cast<const Task*>(-1);
|
|
|
// We don't want this file to be opened in binary mode.
|
// We don't want this file to be opened in binary mode.
|
Position_dependent_options posdep = cmdline->position_dependent_options();
|
Position_dependent_options posdep = cmdline->position_dependent_options();
|
if (posdep.format_enum() == General_options::OBJECT_FORMAT_BINARY)
|
if (posdep.format_enum() == General_options::OBJECT_FORMAT_BINARY)
|
posdep.set_format_enum(General_options::OBJECT_FORMAT_ELF);
|
posdep.set_format_enum(General_options::OBJECT_FORMAT_ELF);
|
Input_file_argument input_argument(filename,
|
Input_file_argument input_argument(filename,
|
Input_file_argument::INPUT_FILE_TYPE_FILE,
|
Input_file_argument::INPUT_FILE_TYPE_FILE,
|
"", false, posdep);
|
"", false, posdep);
|
Input_file input_file(&input_argument);
|
Input_file input_file(&input_argument);
|
int dummy = 0;
|
int dummy = 0;
|
if (!input_file.open(dirsearch, task, &dummy))
|
if (!input_file.open(dirsearch, task, &dummy))
|
return false;
|
return false;
|
|
|
std::string input_string;
|
std::string input_string;
|
Lex::read_file(&input_file, &input_string);
|
Lex::read_file(&input_file, &input_string);
|
|
|
Lex lex(input_string.c_str(), input_string.length(), first_token);
|
Lex lex(input_string.c_str(), input_string.length(), first_token);
|
lex.set_mode(lex_mode);
|
lex.set_mode(lex_mode);
|
|
|
Parser_closure closure(filename,
|
Parser_closure closure(filename,
|
cmdline->position_dependent_options(),
|
cmdline->position_dependent_options(),
|
first_token == Lex::DYNAMIC_LIST,
|
first_token == Lex::DYNAMIC_LIST,
|
false,
|
false,
|
input_file.is_in_sysroot(),
|
input_file.is_in_sysroot(),
|
cmdline,
|
cmdline,
|
script_options,
|
script_options,
|
&lex,
|
&lex,
|
false,
|
false,
|
NULL);
|
NULL);
|
if (yyparse(&closure) != 0)
|
if (yyparse(&closure) != 0)
|
{
|
{
|
input_file.file().unlock(task);
|
input_file.file().unlock(task);
|
return false;
|
return false;
|
}
|
}
|
|
|
input_file.file().unlock(task);
|
input_file.file().unlock(task);
|
|
|
gold_assert(!closure.saw_inputs());
|
gold_assert(!closure.saw_inputs());
|
|
|
return true;
|
return true;
|
}
|
}
|
|
|
// FILENAME was found as an argument to --script (-T).
|
// FILENAME was found as an argument to --script (-T).
|
// Read it as a script, and execute its contents immediately.
|
// Read it as a script, and execute its contents immediately.
|
|
|
bool
|
bool
|
read_commandline_script(const char* filename, Command_line* cmdline)
|
read_commandline_script(const char* filename, Command_line* cmdline)
|
{
|
{
|
return read_script_file(filename, cmdline, &cmdline->script_options(),
|
return read_script_file(filename, cmdline, &cmdline->script_options(),
|
PARSING_LINKER_SCRIPT, Lex::LINKER_SCRIPT);
|
PARSING_LINKER_SCRIPT, Lex::LINKER_SCRIPT);
|
}
|
}
|
|
|
// FILENAME was found as an argument to --version-script. Read it as
|
// FILENAME was found as an argument to --version-script. Read it as
|
// a version script, and store its contents in
|
// a version script, and store its contents in
|
// cmdline->script_options()->version_script_info().
|
// cmdline->script_options()->version_script_info().
|
|
|
bool
|
bool
|
read_version_script(const char* filename, Command_line* cmdline)
|
read_version_script(const char* filename, Command_line* cmdline)
|
{
|
{
|
return read_script_file(filename, cmdline, &cmdline->script_options(),
|
return read_script_file(filename, cmdline, &cmdline->script_options(),
|
PARSING_VERSION_SCRIPT, Lex::VERSION_SCRIPT);
|
PARSING_VERSION_SCRIPT, Lex::VERSION_SCRIPT);
|
}
|
}
|
|
|
// FILENAME was found as an argument to --dynamic-list. Read it as a
|
// FILENAME was found as an argument to --dynamic-list. Read it as a
|
// list of symbols, and store its contents in DYNAMIC_LIST.
|
// list of symbols, and store its contents in DYNAMIC_LIST.
|
|
|
bool
|
bool
|
read_dynamic_list(const char* filename, Command_line* cmdline,
|
read_dynamic_list(const char* filename, Command_line* cmdline,
|
Script_options* dynamic_list)
|
Script_options* dynamic_list)
|
{
|
{
|
return read_script_file(filename, cmdline, dynamic_list,
|
return read_script_file(filename, cmdline, dynamic_list,
|
PARSING_DYNAMIC_LIST, Lex::DYNAMIC_LIST);
|
PARSING_DYNAMIC_LIST, Lex::DYNAMIC_LIST);
|
}
|
}
|
|
|
// Implement the --defsym option on the command line. Return true if
|
// Implement the --defsym option on the command line. Return true if
|
// all is well.
|
// all is well.
|
|
|
bool
|
bool
|
Script_options::define_symbol(const char* definition)
|
Script_options::define_symbol(const char* definition)
|
{
|
{
|
Lex lex(definition, strlen(definition), PARSING_DEFSYM);
|
Lex lex(definition, strlen(definition), PARSING_DEFSYM);
|
lex.set_mode(Lex::EXPRESSION);
|
lex.set_mode(Lex::EXPRESSION);
|
|
|
// Dummy value.
|
// Dummy value.
|
Position_dependent_options posdep_options;
|
Position_dependent_options posdep_options;
|
|
|
Parser_closure closure("command line", posdep_options, true,
|
Parser_closure closure("command line", posdep_options, true,
|
false, false, NULL, this, &lex, false, NULL);
|
false, false, NULL, this, &lex, false, NULL);
|
|
|
if (yyparse(&closure) != 0)
|
if (yyparse(&closure) != 0)
|
return false;
|
return false;
|
|
|
gold_assert(!closure.saw_inputs());
|
gold_assert(!closure.saw_inputs());
|
|
|
return true;
|
return true;
|
}
|
}
|
|
|
// Print the script to F for debugging.
|
// Print the script to F for debugging.
|
|
|
void
|
void
|
Script_options::print(FILE* f) const
|
Script_options::print(FILE* f) const
|
{
|
{
|
fprintf(f, "%s: Dumping linker script\n", program_name);
|
fprintf(f, "%s: Dumping linker script\n", program_name);
|
|
|
if (!this->entry_.empty())
|
if (!this->entry_.empty())
|
fprintf(f, "ENTRY(%s)\n", this->entry_.c_str());
|
fprintf(f, "ENTRY(%s)\n", this->entry_.c_str());
|
|
|
for (Symbol_assignments::const_iterator p =
|
for (Symbol_assignments::const_iterator p =
|
this->symbol_assignments_.begin();
|
this->symbol_assignments_.begin();
|
p != this->symbol_assignments_.end();
|
p != this->symbol_assignments_.end();
|
++p)
|
++p)
|
(*p)->print(f);
|
(*p)->print(f);
|
|
|
for (Assertions::const_iterator p = this->assertions_.begin();
|
for (Assertions::const_iterator p = this->assertions_.begin();
|
p != this->assertions_.end();
|
p != this->assertions_.end();
|
++p)
|
++p)
|
(*p)->print(f);
|
(*p)->print(f);
|
|
|
this->script_sections_.print(f);
|
this->script_sections_.print(f);
|
|
|
this->version_script_info_.print(f);
|
this->version_script_info_.print(f);
|
}
|
}
|
|
|
// Manage mapping from keywords to the codes expected by the bison
|
// Manage mapping from keywords to the codes expected by the bison
|
// parser. We construct one global object for each lex mode with
|
// parser. We construct one global object for each lex mode with
|
// keywords.
|
// keywords.
|
|
|
class Keyword_to_parsecode
|
class Keyword_to_parsecode
|
{
|
{
|
public:
|
public:
|
// The structure which maps keywords to parsecodes.
|
// The structure which maps keywords to parsecodes.
|
struct Keyword_parsecode
|
struct Keyword_parsecode
|
{
|
{
|
// Keyword.
|
// Keyword.
|
const char* keyword;
|
const char* keyword;
|
// Corresponding parsecode.
|
// Corresponding parsecode.
|
int parsecode;
|
int parsecode;
|
};
|
};
|
|
|
Keyword_to_parsecode(const Keyword_parsecode* keywords,
|
Keyword_to_parsecode(const Keyword_parsecode* keywords,
|
int keyword_count)
|
int keyword_count)
|
: keyword_parsecodes_(keywords), keyword_count_(keyword_count)
|
: keyword_parsecodes_(keywords), keyword_count_(keyword_count)
|
{ }
|
{ }
|
|
|
// Return the parsecode corresponding KEYWORD, or 0 if it is not a
|
// Return the parsecode corresponding KEYWORD, or 0 if it is not a
|
// keyword.
|
// keyword.
|
int
|
int
|
keyword_to_parsecode(const char* keyword, size_t len) const;
|
keyword_to_parsecode(const char* keyword, size_t len) const;
|
|
|
private:
|
private:
|
const Keyword_parsecode* keyword_parsecodes_;
|
const Keyword_parsecode* keyword_parsecodes_;
|
const int keyword_count_;
|
const int keyword_count_;
|
};
|
};
|
|
|
// Mapping from keyword string to keyword parsecode. This array must
|
// Mapping from keyword string to keyword parsecode. This array must
|
// be kept in sorted order. Parsecodes are looked up using bsearch.
|
// be kept in sorted order. Parsecodes are looked up using bsearch.
|
// This array must correspond to the list of parsecodes in yyscript.y.
|
// This array must correspond to the list of parsecodes in yyscript.y.
|
|
|
static const Keyword_to_parsecode::Keyword_parsecode
|
static const Keyword_to_parsecode::Keyword_parsecode
|
script_keyword_parsecodes[] =
|
script_keyword_parsecodes[] =
|
{
|
{
|
{ "ABSOLUTE", ABSOLUTE },
|
{ "ABSOLUTE", ABSOLUTE },
|
{ "ADDR", ADDR },
|
{ "ADDR", ADDR },
|
{ "ALIGN", ALIGN_K },
|
{ "ALIGN", ALIGN_K },
|
{ "ALIGNOF", ALIGNOF },
|
{ "ALIGNOF", ALIGNOF },
|
{ "ASSERT", ASSERT_K },
|
{ "ASSERT", ASSERT_K },
|
{ "AS_NEEDED", AS_NEEDED },
|
{ "AS_NEEDED", AS_NEEDED },
|
{ "AT", AT },
|
{ "AT", AT },
|
{ "BIND", BIND },
|
{ "BIND", BIND },
|
{ "BLOCK", BLOCK },
|
{ "BLOCK", BLOCK },
|
{ "BYTE", BYTE },
|
{ "BYTE", BYTE },
|
{ "CONSTANT", CONSTANT },
|
{ "CONSTANT", CONSTANT },
|
{ "CONSTRUCTORS", CONSTRUCTORS },
|
{ "CONSTRUCTORS", CONSTRUCTORS },
|
{ "COPY", COPY },
|
{ "COPY", COPY },
|
{ "CREATE_OBJECT_SYMBOLS", CREATE_OBJECT_SYMBOLS },
|
{ "CREATE_OBJECT_SYMBOLS", CREATE_OBJECT_SYMBOLS },
|
{ "DATA_SEGMENT_ALIGN", DATA_SEGMENT_ALIGN },
|
{ "DATA_SEGMENT_ALIGN", DATA_SEGMENT_ALIGN },
|
{ "DATA_SEGMENT_END", DATA_SEGMENT_END },
|
{ "DATA_SEGMENT_END", DATA_SEGMENT_END },
|
{ "DATA_SEGMENT_RELRO_END", DATA_SEGMENT_RELRO_END },
|
{ "DATA_SEGMENT_RELRO_END", DATA_SEGMENT_RELRO_END },
|
{ "DEFINED", DEFINED },
|
{ "DEFINED", DEFINED },
|
{ "DSECT", DSECT },
|
{ "DSECT", DSECT },
|
{ "ENTRY", ENTRY },
|
{ "ENTRY", ENTRY },
|
{ "EXCLUDE_FILE", EXCLUDE_FILE },
|
{ "EXCLUDE_FILE", EXCLUDE_FILE },
|
{ "EXTERN", EXTERN },
|
{ "EXTERN", EXTERN },
|
{ "FILL", FILL },
|
{ "FILL", FILL },
|
{ "FLOAT", FLOAT },
|
{ "FLOAT", FLOAT },
|
{ "FORCE_COMMON_ALLOCATION", FORCE_COMMON_ALLOCATION },
|
{ "FORCE_COMMON_ALLOCATION", FORCE_COMMON_ALLOCATION },
|
{ "GROUP", GROUP },
|
{ "GROUP", GROUP },
|
{ "HLL", HLL },
|
{ "HLL", HLL },
|
{ "INCLUDE", INCLUDE },
|
{ "INCLUDE", INCLUDE },
|
{ "INFO", INFO },
|
{ "INFO", INFO },
|
{ "INHIBIT_COMMON_ALLOCATION", INHIBIT_COMMON_ALLOCATION },
|
{ "INHIBIT_COMMON_ALLOCATION", INHIBIT_COMMON_ALLOCATION },
|
{ "INPUT", INPUT },
|
{ "INPUT", INPUT },
|
{ "KEEP", KEEP },
|
{ "KEEP", KEEP },
|
{ "LENGTH", LENGTH },
|
{ "LENGTH", LENGTH },
|
{ "LOADADDR", LOADADDR },
|
{ "LOADADDR", LOADADDR },
|
{ "LONG", LONG },
|
{ "LONG", LONG },
|
{ "MAP", MAP },
|
{ "MAP", MAP },
|
{ "MAX", MAX_K },
|
{ "MAX", MAX_K },
|
{ "MEMORY", MEMORY },
|
{ "MEMORY", MEMORY },
|
{ "MIN", MIN_K },
|
{ "MIN", MIN_K },
|
{ "NEXT", NEXT },
|
{ "NEXT", NEXT },
|
{ "NOCROSSREFS", NOCROSSREFS },
|
{ "NOCROSSREFS", NOCROSSREFS },
|
{ "NOFLOAT", NOFLOAT },
|
{ "NOFLOAT", NOFLOAT },
|
{ "NOLOAD", NOLOAD },
|
{ "NOLOAD", NOLOAD },
|
{ "ONLY_IF_RO", ONLY_IF_RO },
|
{ "ONLY_IF_RO", ONLY_IF_RO },
|
{ "ONLY_IF_RW", ONLY_IF_RW },
|
{ "ONLY_IF_RW", ONLY_IF_RW },
|
{ "OPTION", OPTION },
|
{ "OPTION", OPTION },
|
{ "ORIGIN", ORIGIN },
|
{ "ORIGIN", ORIGIN },
|
{ "OUTPUT", OUTPUT },
|
{ "OUTPUT", OUTPUT },
|
{ "OUTPUT_ARCH", OUTPUT_ARCH },
|
{ "OUTPUT_ARCH", OUTPUT_ARCH },
|
{ "OUTPUT_FORMAT", OUTPUT_FORMAT },
|
{ "OUTPUT_FORMAT", OUTPUT_FORMAT },
|
{ "OVERLAY", OVERLAY },
|
{ "OVERLAY", OVERLAY },
|
{ "PHDRS", PHDRS },
|
{ "PHDRS", PHDRS },
|
{ "PROVIDE", PROVIDE },
|
{ "PROVIDE", PROVIDE },
|
{ "PROVIDE_HIDDEN", PROVIDE_HIDDEN },
|
{ "PROVIDE_HIDDEN", PROVIDE_HIDDEN },
|
{ "QUAD", QUAD },
|
{ "QUAD", QUAD },
|
{ "SEARCH_DIR", SEARCH_DIR },
|
{ "SEARCH_DIR", SEARCH_DIR },
|
{ "SECTIONS", SECTIONS },
|
{ "SECTIONS", SECTIONS },
|
{ "SEGMENT_START", SEGMENT_START },
|
{ "SEGMENT_START", SEGMENT_START },
|
{ "SHORT", SHORT },
|
{ "SHORT", SHORT },
|
{ "SIZEOF", SIZEOF },
|
{ "SIZEOF", SIZEOF },
|
{ "SIZEOF_HEADERS", SIZEOF_HEADERS },
|
{ "SIZEOF_HEADERS", SIZEOF_HEADERS },
|
{ "SORT", SORT_BY_NAME },
|
{ "SORT", SORT_BY_NAME },
|
{ "SORT_BY_ALIGNMENT", SORT_BY_ALIGNMENT },
|
{ "SORT_BY_ALIGNMENT", SORT_BY_ALIGNMENT },
|
{ "SORT_BY_NAME", SORT_BY_NAME },
|
{ "SORT_BY_NAME", SORT_BY_NAME },
|
{ "SPECIAL", SPECIAL },
|
{ "SPECIAL", SPECIAL },
|
{ "SQUAD", SQUAD },
|
{ "SQUAD", SQUAD },
|
{ "STARTUP", STARTUP },
|
{ "STARTUP", STARTUP },
|
{ "SUBALIGN", SUBALIGN },
|
{ "SUBALIGN", SUBALIGN },
|
{ "SYSLIB", SYSLIB },
|
{ "SYSLIB", SYSLIB },
|
{ "TARGET", TARGET_K },
|
{ "TARGET", TARGET_K },
|
{ "TRUNCATE", TRUNCATE },
|
{ "TRUNCATE", TRUNCATE },
|
{ "VERSION", VERSIONK },
|
{ "VERSION", VERSIONK },
|
{ "global", GLOBAL },
|
{ "global", GLOBAL },
|
{ "l", LENGTH },
|
{ "l", LENGTH },
|
{ "len", LENGTH },
|
{ "len", LENGTH },
|
{ "local", LOCAL },
|
{ "local", LOCAL },
|
{ "o", ORIGIN },
|
{ "o", ORIGIN },
|
{ "org", ORIGIN },
|
{ "org", ORIGIN },
|
{ "sizeof_headers", SIZEOF_HEADERS },
|
{ "sizeof_headers", SIZEOF_HEADERS },
|
};
|
};
|
|
|
static const Keyword_to_parsecode
|
static const Keyword_to_parsecode
|
script_keywords(&script_keyword_parsecodes[0],
|
script_keywords(&script_keyword_parsecodes[0],
|
(sizeof(script_keyword_parsecodes)
|
(sizeof(script_keyword_parsecodes)
|
/ sizeof(script_keyword_parsecodes[0])));
|
/ sizeof(script_keyword_parsecodes[0])));
|
|
|
static const Keyword_to_parsecode::Keyword_parsecode
|
static const Keyword_to_parsecode::Keyword_parsecode
|
version_script_keyword_parsecodes[] =
|
version_script_keyword_parsecodes[] =
|
{
|
{
|
{ "extern", EXTERN },
|
{ "extern", EXTERN },
|
{ "global", GLOBAL },
|
{ "global", GLOBAL },
|
{ "local", LOCAL },
|
{ "local", LOCAL },
|
};
|
};
|
|
|
static const Keyword_to_parsecode
|
static const Keyword_to_parsecode
|
version_script_keywords(&version_script_keyword_parsecodes[0],
|
version_script_keywords(&version_script_keyword_parsecodes[0],
|
(sizeof(version_script_keyword_parsecodes)
|
(sizeof(version_script_keyword_parsecodes)
|
/ sizeof(version_script_keyword_parsecodes[0])));
|
/ sizeof(version_script_keyword_parsecodes[0])));
|
|
|
static const Keyword_to_parsecode::Keyword_parsecode
|
static const Keyword_to_parsecode::Keyword_parsecode
|
dynamic_list_keyword_parsecodes[] =
|
dynamic_list_keyword_parsecodes[] =
|
{
|
{
|
{ "extern", EXTERN },
|
{ "extern", EXTERN },
|
};
|
};
|
|
|
static const Keyword_to_parsecode
|
static const Keyword_to_parsecode
|
dynamic_list_keywords(&dynamic_list_keyword_parsecodes[0],
|
dynamic_list_keywords(&dynamic_list_keyword_parsecodes[0],
|
(sizeof(dynamic_list_keyword_parsecodes)
|
(sizeof(dynamic_list_keyword_parsecodes)
|
/ sizeof(dynamic_list_keyword_parsecodes[0])));
|
/ sizeof(dynamic_list_keyword_parsecodes[0])));
|
|
|
|
|
|
|
// Comparison function passed to bsearch.
|
// Comparison function passed to bsearch.
|
|
|
extern "C"
|
extern "C"
|
{
|
{
|
|
|
struct Ktt_key
|
struct Ktt_key
|
{
|
{
|
const char* str;
|
const char* str;
|
size_t len;
|
size_t len;
|
};
|
};
|
|
|
static int
|
static int
|
ktt_compare(const void* keyv, const void* kttv)
|
ktt_compare(const void* keyv, const void* kttv)
|
{
|
{
|
const Ktt_key* key = static_cast<const Ktt_key*>(keyv);
|
const Ktt_key* key = static_cast<const Ktt_key*>(keyv);
|
const Keyword_to_parsecode::Keyword_parsecode* ktt =
|
const Keyword_to_parsecode::Keyword_parsecode* ktt =
|
static_cast<const Keyword_to_parsecode::Keyword_parsecode*>(kttv);
|
static_cast<const Keyword_to_parsecode::Keyword_parsecode*>(kttv);
|
int i = strncmp(key->str, ktt->keyword, key->len);
|
int i = strncmp(key->str, ktt->keyword, key->len);
|
if (i != 0)
|
if (i != 0)
|
return i;
|
return i;
|
if (ktt->keyword[key->len] != '\0')
|
if (ktt->keyword[key->len] != '\0')
|
return -1;
|
return -1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
} // End extern "C".
|
} // End extern "C".
|
|
|
int
|
int
|
Keyword_to_parsecode::keyword_to_parsecode(const char* keyword,
|
Keyword_to_parsecode::keyword_to_parsecode(const char* keyword,
|
size_t len) const
|
size_t len) const
|
{
|
{
|
Ktt_key key;
|
Ktt_key key;
|
key.str = keyword;
|
key.str = keyword;
|
key.len = len;
|
key.len = len;
|
void* kttv = bsearch(&key,
|
void* kttv = bsearch(&key,
|
this->keyword_parsecodes_,
|
this->keyword_parsecodes_,
|
this->keyword_count_,
|
this->keyword_count_,
|
sizeof(this->keyword_parsecodes_[0]),
|
sizeof(this->keyword_parsecodes_[0]),
|
ktt_compare);
|
ktt_compare);
|
if (kttv == NULL)
|
if (kttv == NULL)
|
return 0;
|
return 0;
|
Keyword_parsecode* ktt = static_cast<Keyword_parsecode*>(kttv);
|
Keyword_parsecode* ktt = static_cast<Keyword_parsecode*>(kttv);
|
return ktt->parsecode;
|
return ktt->parsecode;
|
}
|
}
|
|
|
// The following structs are used within the VersionInfo class as well
|
// The following structs are used within the VersionInfo class as well
|
// as in the bison helper functions. They store the information
|
// as in the bison helper functions. They store the information
|
// parsed from the version script.
|
// parsed from the version script.
|
|
|
// A single version expression.
|
// A single version expression.
|
// For example, pattern="std::map*" and language="C++".
|
// For example, pattern="std::map*" and language="C++".
|
struct Version_expression
|
struct Version_expression
|
{
|
{
|
Version_expression(const std::string& a_pattern,
|
Version_expression(const std::string& a_pattern,
|
Version_script_info::Language a_language,
|
Version_script_info::Language a_language,
|
bool a_exact_match)
|
bool a_exact_match)
|
: pattern(a_pattern), language(a_language), exact_match(a_exact_match),
|
: pattern(a_pattern), language(a_language), exact_match(a_exact_match),
|
was_matched_by_symbol(false)
|
was_matched_by_symbol(false)
|
{ }
|
{ }
|
|
|
std::string pattern;
|
std::string pattern;
|
Version_script_info::Language language;
|
Version_script_info::Language language;
|
// If false, we use glob() to match pattern. If true, we use strcmp().
|
// If false, we use glob() to match pattern. If true, we use strcmp().
|
bool exact_match;
|
bool exact_match;
|
// True if --no-undefined-version is in effect and we found this
|
// True if --no-undefined-version is in effect and we found this
|
// version in get_symbol_version. We use mutable because this
|
// version in get_symbol_version. We use mutable because this
|
// struct is generally not modifiable after it has been created.
|
// struct is generally not modifiable after it has been created.
|
mutable bool was_matched_by_symbol;
|
mutable bool was_matched_by_symbol;
|
};
|
};
|
|
|
// A list of expressions.
|
// A list of expressions.
|
struct Version_expression_list
|
struct Version_expression_list
|
{
|
{
|
std::vector<struct Version_expression> expressions;
|
std::vector<struct Version_expression> expressions;
|
};
|
};
|
|
|
// A list of which versions upon which another version depends.
|
// A list of which versions upon which another version depends.
|
// Strings should be from the Stringpool.
|
// Strings should be from the Stringpool.
|
struct Version_dependency_list
|
struct Version_dependency_list
|
{
|
{
|
std::vector<std::string> dependencies;
|
std::vector<std::string> dependencies;
|
};
|
};
|
|
|
// The total definition of a version. It includes the tag for the
|
// The total definition of a version. It includes the tag for the
|
// version, its global and local expressions, and any dependencies.
|
// version, its global and local expressions, and any dependencies.
|
struct Version_tree
|
struct Version_tree
|
{
|
{
|
Version_tree()
|
Version_tree()
|
: tag(), global(NULL), local(NULL), dependencies(NULL)
|
: tag(), global(NULL), local(NULL), dependencies(NULL)
|
{ }
|
{ }
|
|
|
std::string tag;
|
std::string tag;
|
const struct Version_expression_list* global;
|
const struct Version_expression_list* global;
|
const struct Version_expression_list* local;
|
const struct Version_expression_list* local;
|
const struct Version_dependency_list* dependencies;
|
const struct Version_dependency_list* dependencies;
|
};
|
};
|
|
|
// Helper class that calls cplus_demangle when needed and takes care of freeing
|
// Helper class that calls cplus_demangle when needed and takes care of freeing
|
// the result.
|
// the result.
|
|
|
class Lazy_demangler
|
class Lazy_demangler
|
{
|
{
|
public:
|
public:
|
Lazy_demangler(const char* symbol, int options)
|
Lazy_demangler(const char* symbol, int options)
|
: symbol_(symbol), options_(options), demangled_(NULL), did_demangle_(false)
|
: symbol_(symbol), options_(options), demangled_(NULL), did_demangle_(false)
|
{ }
|
{ }
|
|
|
~Lazy_demangler()
|
~Lazy_demangler()
|
{ free(this->demangled_); }
|
{ free(this->demangled_); }
|
|
|
// Return the demangled name. The actual demangling happens on the first call,
|
// Return the demangled name. The actual demangling happens on the first call,
|
// and the result is later cached.
|
// and the result is later cached.
|
inline char*
|
inline char*
|
get();
|
get();
|
|
|
private:
|
private:
|
// The symbol to demangle.
|
// The symbol to demangle.
|
const char* symbol_;
|
const char* symbol_;
|
// Option flags to pass to cplus_demagle.
|
// Option flags to pass to cplus_demagle.
|
const int options_;
|
const int options_;
|
// The cached demangled value, or NULL if demangling didn't happen yet or
|
// The cached demangled value, or NULL if demangling didn't happen yet or
|
// failed.
|
// failed.
|
char* demangled_;
|
char* demangled_;
|
// Whether we already called cplus_demangle
|
// Whether we already called cplus_demangle
|
bool did_demangle_;
|
bool did_demangle_;
|
};
|
};
|
|
|
// Return the demangled name. The actual demangling happens on the first call,
|
// Return the demangled name. The actual demangling happens on the first call,
|
// and the result is later cached. Returns NULL if the symbol cannot be
|
// and the result is later cached. Returns NULL if the symbol cannot be
|
// demangled.
|
// demangled.
|
|
|
inline char*
|
inline char*
|
Lazy_demangler::get()
|
Lazy_demangler::get()
|
{
|
{
|
if (!this->did_demangle_)
|
if (!this->did_demangle_)
|
{
|
{
|
this->demangled_ = cplus_demangle(this->symbol_, this->options_);
|
this->demangled_ = cplus_demangle(this->symbol_, this->options_);
|
this->did_demangle_ = true;
|
this->did_demangle_ = true;
|
}
|
}
|
return this->demangled_;
|
return this->demangled_;
|
}
|
}
|
|
|
// Class Version_script_info.
|
// Class Version_script_info.
|
|
|
Version_script_info::Version_script_info()
|
Version_script_info::Version_script_info()
|
: dependency_lists_(), expression_lists_(), version_trees_(), globs_(),
|
: dependency_lists_(), expression_lists_(), version_trees_(), globs_(),
|
default_version_(NULL), default_is_global_(false), is_finalized_(false)
|
default_version_(NULL), default_is_global_(false), is_finalized_(false)
|
{
|
{
|
for (int i = 0; i < LANGUAGE_COUNT; ++i)
|
for (int i = 0; i < LANGUAGE_COUNT; ++i)
|
this->exact_[i] = NULL;
|
this->exact_[i] = NULL;
|
}
|
}
|
|
|
Version_script_info::~Version_script_info()
|
Version_script_info::~Version_script_info()
|
{
|
{
|
}
|
}
|
|
|
// Forget all the known version script information.
|
// Forget all the known version script information.
|
|
|
void
|
void
|
Version_script_info::clear()
|
Version_script_info::clear()
|
{
|
{
|
for (size_t k = 0; k < this->dependency_lists_.size(); ++k)
|
for (size_t k = 0; k < this->dependency_lists_.size(); ++k)
|
delete this->dependency_lists_[k];
|
delete this->dependency_lists_[k];
|
this->dependency_lists_.clear();
|
this->dependency_lists_.clear();
|
for (size_t k = 0; k < this->version_trees_.size(); ++k)
|
for (size_t k = 0; k < this->version_trees_.size(); ++k)
|
delete this->version_trees_[k];
|
delete this->version_trees_[k];
|
this->version_trees_.clear();
|
this->version_trees_.clear();
|
for (size_t k = 0; k < this->expression_lists_.size(); ++k)
|
for (size_t k = 0; k < this->expression_lists_.size(); ++k)
|
delete this->expression_lists_[k];
|
delete this->expression_lists_[k];
|
this->expression_lists_.clear();
|
this->expression_lists_.clear();
|
}
|
}
|
|
|
// Finalize the version script information.
|
// Finalize the version script information.
|
|
|
void
|
void
|
Version_script_info::finalize()
|
Version_script_info::finalize()
|
{
|
{
|
if (!this->is_finalized_)
|
if (!this->is_finalized_)
|
{
|
{
|
this->build_lookup_tables();
|
this->build_lookup_tables();
|
this->is_finalized_ = true;
|
this->is_finalized_ = true;
|
}
|
}
|
}
|
}
|
|
|
// Return all the versions.
|
// Return all the versions.
|
|
|
std::vector<std::string>
|
std::vector<std::string>
|
Version_script_info::get_versions() const
|
Version_script_info::get_versions() const
|
{
|
{
|
std::vector<std::string> ret;
|
std::vector<std::string> ret;
|
for (size_t j = 0; j < this->version_trees_.size(); ++j)
|
for (size_t j = 0; j < this->version_trees_.size(); ++j)
|
if (!this->version_trees_[j]->tag.empty())
|
if (!this->version_trees_[j]->tag.empty())
|
ret.push_back(this->version_trees_[j]->tag);
|
ret.push_back(this->version_trees_[j]->tag);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
// Return the dependencies of VERSION.
|
// Return the dependencies of VERSION.
|
|
|
std::vector<std::string>
|
std::vector<std::string>
|
Version_script_info::get_dependencies(const char* version) const
|
Version_script_info::get_dependencies(const char* version) const
|
{
|
{
|
std::vector<std::string> ret;
|
std::vector<std::string> ret;
|
for (size_t j = 0; j < this->version_trees_.size(); ++j)
|
for (size_t j = 0; j < this->version_trees_.size(); ++j)
|
if (this->version_trees_[j]->tag == version)
|
if (this->version_trees_[j]->tag == version)
|
{
|
{
|
const struct Version_dependency_list* deps =
|
const struct Version_dependency_list* deps =
|
this->version_trees_[j]->dependencies;
|
this->version_trees_[j]->dependencies;
|
if (deps != NULL)
|
if (deps != NULL)
|
for (size_t k = 0; k < deps->dependencies.size(); ++k)
|
for (size_t k = 0; k < deps->dependencies.size(); ++k)
|
ret.push_back(deps->dependencies[k]);
|
ret.push_back(deps->dependencies[k]);
|
return ret;
|
return ret;
|
}
|
}
|
return ret;
|
return ret;
|
}
|
}
|
|
|
// A version script essentially maps a symbol name to a version tag
|
// A version script essentially maps a symbol name to a version tag
|
// and an indication of whether symbol is global or local within that
|
// and an indication of whether symbol is global or local within that
|
// version tag. Each symbol maps to at most one version tag.
|
// version tag. Each symbol maps to at most one version tag.
|
// Unfortunately, in practice, version scripts are ambiguous, and list
|
// Unfortunately, in practice, version scripts are ambiguous, and list
|
// symbols multiple times. Thus, we have to document the matching
|
// symbols multiple times. Thus, we have to document the matching
|
// process.
|
// process.
|
|
|
// This is a description of what the GNU linker does as of 2010-01-11.
|
// This is a description of what the GNU linker does as of 2010-01-11.
|
// It walks through the version tags in the order in which they appear
|
// It walks through the version tags in the order in which they appear
|
// in the version script. For each tag, it first walks through the
|
// in the version script. For each tag, it first walks through the
|
// global patterns for that tag, then the local patterns. When
|
// global patterns for that tag, then the local patterns. When
|
// looking at a single pattern, it first applies any language specific
|
// looking at a single pattern, it first applies any language specific
|
// demangling as specified for the pattern, and then matches the
|
// demangling as specified for the pattern, and then matches the
|
// resulting symbol name to the pattern. If it finds an exact match
|
// resulting symbol name to the pattern. If it finds an exact match
|
// for a literal pattern (a pattern enclosed in quotes or with no
|
// for a literal pattern (a pattern enclosed in quotes or with no
|
// wildcard characters), then that is the match that it uses. If
|
// wildcard characters), then that is the match that it uses. If
|
// finds a match with a wildcard pattern, then it saves it and
|
// finds a match with a wildcard pattern, then it saves it and
|
// continues searching. Wildcard patterns that are exactly "*" are
|
// continues searching. Wildcard patterns that are exactly "*" are
|
// saved separately.
|
// saved separately.
|
|
|
// If no exact match with a literal pattern is ever found, then if a
|
// If no exact match with a literal pattern is ever found, then if a
|
// wildcard match with a global pattern was found it is used,
|
// wildcard match with a global pattern was found it is used,
|
// otherwise if a wildcard match with a local pattern was found it is
|
// otherwise if a wildcard match with a local pattern was found it is
|
// used.
|
// used.
|
|
|
// This is the result:
|
// This is the result:
|
// * If there is an exact match, then we use the first tag in the
|
// * If there is an exact match, then we use the first tag in the
|
// version script where it matches.
|
// version script where it matches.
|
// + If the exact match in that tag is global, it is used.
|
// + If the exact match in that tag is global, it is used.
|
// + Otherwise the exact match in that tag is local, and is used.
|
// + Otherwise the exact match in that tag is local, and is used.
|
// * Otherwise, if there is any match with a global wildcard pattern:
|
// * Otherwise, if there is any match with a global wildcard pattern:
|
// + If there is any match with a wildcard pattern which is not
|
// + If there is any match with a wildcard pattern which is not
|
// "*", then we use the tag in which the *last* such pattern
|
// "*", then we use the tag in which the *last* such pattern
|
// appears.
|
// appears.
|
// + Otherwise, we matched "*". If there is no match with a local
|
// + Otherwise, we matched "*". If there is no match with a local
|
// wildcard pattern which is not "*", then we use the *last*
|
// wildcard pattern which is not "*", then we use the *last*
|
// match with a global "*". Otherwise, continue.
|
// match with a global "*". Otherwise, continue.
|
// * Otherwise, if there is any match with a local wildcard pattern:
|
// * Otherwise, if there is any match with a local wildcard pattern:
|
// + If there is any match with a wildcard pattern which is not
|
// + If there is any match with a wildcard pattern which is not
|
// "*", then we use the tag in which the *last* such pattern
|
// "*", then we use the tag in which the *last* such pattern
|
// appears.
|
// appears.
|
// + Otherwise, we matched "*", and we use the tag in which the
|
// + Otherwise, we matched "*", and we use the tag in which the
|
// *last* such match occurred.
|
// *last* such match occurred.
|
|
|
// There is an additional wrinkle. When the GNU linker finds a symbol
|
// There is an additional wrinkle. When the GNU linker finds a symbol
|
// with a version defined in an object file due to a .symver
|
// with a version defined in an object file due to a .symver
|
// directive, it looks up that symbol name in that version tag. If it
|
// directive, it looks up that symbol name in that version tag. If it
|
// finds it, it matches the symbol name against the patterns for that
|
// finds it, it matches the symbol name against the patterns for that
|
// version. If there is no match with a global pattern, but there is
|
// version. If there is no match with a global pattern, but there is
|
// a match with a local pattern, then the GNU linker marks the symbol
|
// a match with a local pattern, then the GNU linker marks the symbol
|
// as local.
|
// as local.
|
|
|
// We want gold to be generally compatible, but we also want gold to
|
// We want gold to be generally compatible, but we also want gold to
|
// be fast. These are the rules that gold implements:
|
// be fast. These are the rules that gold implements:
|
// * If there is an exact match for the mangled name, we use it.
|
// * If there is an exact match for the mangled name, we use it.
|
// + If there is more than one exact match, we give a warning, and
|
// + If there is more than one exact match, we give a warning, and
|
// we use the first tag in the script which matches.
|
// we use the first tag in the script which matches.
|
// + If a symbol has an exact match as both global and local for
|
// + If a symbol has an exact match as both global and local for
|
// the same version tag, we give an error.
|
// the same version tag, we give an error.
|
// * Otherwise, we look for an extern C++ or an extern Java exact
|
// * Otherwise, we look for an extern C++ or an extern Java exact
|
// match. If we find an exact match, we use it.
|
// match. If we find an exact match, we use it.
|
// + If there is more than one exact match, we give a warning, and
|
// + If there is more than one exact match, we give a warning, and
|
// we use the first tag in the script which matches.
|
// we use the first tag in the script which matches.
|
// + If a symbol has an exact match as both global and local for
|
// + If a symbol has an exact match as both global and local for
|
// the same version tag, we give an error.
|
// the same version tag, we give an error.
|
// * Otherwise, we look through the wildcard patterns, ignoring "*"
|
// * Otherwise, we look through the wildcard patterns, ignoring "*"
|
// patterns. We look through the version tags in reverse order.
|
// patterns. We look through the version tags in reverse order.
|
// For each version tag, we look through the global patterns and
|
// For each version tag, we look through the global patterns and
|
// then the local patterns. We use the first match we find (i.e.,
|
// then the local patterns. We use the first match we find (i.e.,
|
// the last matching version tag in the file).
|
// the last matching version tag in the file).
|
// * Otherwise, we use the "*" pattern if there is one. We give an
|
// * Otherwise, we use the "*" pattern if there is one. We give an
|
// error if there are multiple "*" patterns.
|
// error if there are multiple "*" patterns.
|
|
|
// At least for now, gold does not look up the version tag for a
|
// At least for now, gold does not look up the version tag for a
|
// symbol version found in an object file to see if it should be
|
// symbol version found in an object file to see if it should be
|
// forced local. There are other ways to force a symbol to be local,
|
// forced local. There are other ways to force a symbol to be local,
|
// and I don't understand why this one is useful.
|
// and I don't understand why this one is useful.
|
|
|
// Build a set of fast lookup tables for a version script.
|
// Build a set of fast lookup tables for a version script.
|
|
|
void
|
void
|
Version_script_info::build_lookup_tables()
|
Version_script_info::build_lookup_tables()
|
{
|
{
|
size_t size = this->version_trees_.size();
|
size_t size = this->version_trees_.size();
|
for (size_t j = 0; j < size; ++j)
|
for (size_t j = 0; j < size; ++j)
|
{
|
{
|
const Version_tree* v = this->version_trees_[j];
|
const Version_tree* v = this->version_trees_[j];
|
this->build_expression_list_lookup(v->local, v, false);
|
this->build_expression_list_lookup(v->local, v, false);
|
this->build_expression_list_lookup(v->global, v, true);
|
this->build_expression_list_lookup(v->global, v, true);
|
}
|
}
|
}
|
}
|
|
|
// If a pattern has backlashes but no unquoted wildcard characters,
|
// If a pattern has backlashes but no unquoted wildcard characters,
|
// then we apply backslash unquoting and look for an exact match.
|
// then we apply backslash unquoting and look for an exact match.
|
// Otherwise we treat it as a wildcard pattern. This function returns
|
// Otherwise we treat it as a wildcard pattern. This function returns
|
// true for a wildcard pattern. Otherwise, it does backslash
|
// true for a wildcard pattern. Otherwise, it does backslash
|
// unquoting on *PATTERN and returns false. If this returns true,
|
// unquoting on *PATTERN and returns false. If this returns true,
|
// *PATTERN may have been partially unquoted.
|
// *PATTERN may have been partially unquoted.
|
|
|
bool
|
bool
|
Version_script_info::unquote(std::string* pattern) const
|
Version_script_info::unquote(std::string* pattern) const
|
{
|
{
|
bool saw_backslash = false;
|
bool saw_backslash = false;
|
size_t len = pattern->length();
|
size_t len = pattern->length();
|
size_t j = 0;
|
size_t j = 0;
|
for (size_t i = 0; i < len; ++i)
|
for (size_t i = 0; i < len; ++i)
|
{
|
{
|
if (saw_backslash)
|
if (saw_backslash)
|
saw_backslash = false;
|
saw_backslash = false;
|
else
|
else
|
{
|
{
|
switch ((*pattern)[i])
|
switch ((*pattern)[i])
|
{
|
{
|
case '?': case '[': case '*':
|
case '?': case '[': case '*':
|
return true;
|
return true;
|
case '\\':
|
case '\\':
|
saw_backslash = true;
|
saw_backslash = true;
|
continue;
|
continue;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
if (i != j)
|
if (i != j)
|
(*pattern)[j] = (*pattern)[i];
|
(*pattern)[j] = (*pattern)[i];
|
++j;
|
++j;
|
}
|
}
|
return false;
|
return false;
|
}
|
}
|
|
|
// Add an exact match for MATCH to *PE. The result of the match is
|
// Add an exact match for MATCH to *PE. The result of the match is
|
// V/IS_GLOBAL.
|
// V/IS_GLOBAL.
|
|
|
void
|
void
|
Version_script_info::add_exact_match(const std::string& match,
|
Version_script_info::add_exact_match(const std::string& match,
|
const Version_tree* v, bool is_global,
|
const Version_tree* v, bool is_global,
|
const Version_expression* ve,
|
const Version_expression* ve,
|
Exact* pe)
|
Exact* pe)
|
{
|
{
|
std::pair<Exact::iterator, bool> ins =
|
std::pair<Exact::iterator, bool> ins =
|
pe->insert(std::make_pair(match, Version_tree_match(v, is_global, ve)));
|
pe->insert(std::make_pair(match, Version_tree_match(v, is_global, ve)));
|
if (ins.second)
|
if (ins.second)
|
{
|
{
|
// This is the first time we have seen this match.
|
// This is the first time we have seen this match.
|
return;
|
return;
|
}
|
}
|
|
|
Version_tree_match& vtm(ins.first->second);
|
Version_tree_match& vtm(ins.first->second);
|
if (vtm.real->tag != v->tag)
|
if (vtm.real->tag != v->tag)
|
{
|
{
|
// This is an ambiguous match. We still return the
|
// This is an ambiguous match. We still return the
|
// first version that we found in the script, but we
|
// first version that we found in the script, but we
|
// record the new version to issue a warning if we
|
// record the new version to issue a warning if we
|
// wind up looking up this symbol.
|
// wind up looking up this symbol.
|
if (vtm.ambiguous == NULL)
|
if (vtm.ambiguous == NULL)
|
vtm.ambiguous = v;
|
vtm.ambiguous = v;
|
}
|
}
|
else if (is_global != vtm.is_global)
|
else if (is_global != vtm.is_global)
|
{
|
{
|
// We have a match for both the global and local entries for a
|
// We have a match for both the global and local entries for a
|
// version tag. That's got to be wrong.
|
// version tag. That's got to be wrong.
|
gold_error(_("'%s' appears as both a global and a local symbol "
|
gold_error(_("'%s' appears as both a global and a local symbol "
|
"for version '%s' in script"),
|
"for version '%s' in script"),
|
match.c_str(), v->tag.c_str());
|
match.c_str(), v->tag.c_str());
|
}
|
}
|
}
|
}
|
|
|
// Build fast lookup information for EXPLIST and store it in LOOKUP.
|
// Build fast lookup information for EXPLIST and store it in LOOKUP.
|
// All matches go to V, and IS_GLOBAL is true if they are global
|
// All matches go to V, and IS_GLOBAL is true if they are global
|
// matches.
|
// matches.
|
|
|
void
|
void
|
Version_script_info::build_expression_list_lookup(
|
Version_script_info::build_expression_list_lookup(
|
const Version_expression_list* explist,
|
const Version_expression_list* explist,
|
const Version_tree* v,
|
const Version_tree* v,
|
bool is_global)
|
bool is_global)
|
{
|
{
|
if (explist == NULL)
|
if (explist == NULL)
|
return;
|
return;
|
size_t size = explist->expressions.size();
|
size_t size = explist->expressions.size();
|
for (size_t i = 0; i < size; ++i)
|
for (size_t i = 0; i < size; ++i)
|
{
|
{
|
const Version_expression& exp(explist->expressions[i]);
|
const Version_expression& exp(explist->expressions[i]);
|
|
|
if (exp.pattern.length() == 1 && exp.pattern[0] == '*')
|
if (exp.pattern.length() == 1 && exp.pattern[0] == '*')
|
{
|
{
|
if (this->default_version_ != NULL
|
if (this->default_version_ != NULL
|
&& this->default_version_->tag != v->tag)
|
&& this->default_version_->tag != v->tag)
|
gold_warning(_("wildcard match appears in both version '%s' "
|
gold_warning(_("wildcard match appears in both version '%s' "
|
"and '%s' in script"),
|
"and '%s' in script"),
|
this->default_version_->tag.c_str(), v->tag.c_str());
|
this->default_version_->tag.c_str(), v->tag.c_str());
|
else if (this->default_version_ != NULL
|
else if (this->default_version_ != NULL
|
&& this->default_is_global_ != is_global)
|
&& this->default_is_global_ != is_global)
|
gold_error(_("wildcard match appears as both global and local "
|
gold_error(_("wildcard match appears as both global and local "
|
"in version '%s' in script"),
|
"in version '%s' in script"),
|
v->tag.c_str());
|
v->tag.c_str());
|
this->default_version_ = v;
|
this->default_version_ = v;
|
this->default_is_global_ = is_global;
|
this->default_is_global_ = is_global;
|
continue;
|
continue;
|
}
|
}
|
|
|
std::string pattern = exp.pattern;
|
std::string pattern = exp.pattern;
|
if (!exp.exact_match)
|
if (!exp.exact_match)
|
{
|
{
|
if (this->unquote(&pattern))
|
if (this->unquote(&pattern))
|
{
|
{
|
this->globs_.push_back(Glob(&exp, v, is_global));
|
this->globs_.push_back(Glob(&exp, v, is_global));
|
continue;
|
continue;
|
}
|
}
|
}
|
}
|
|
|
if (this->exact_[exp.language] == NULL)
|
if (this->exact_[exp.language] == NULL)
|
this->exact_[exp.language] = new Exact();
|
this->exact_[exp.language] = new Exact();
|
this->add_exact_match(pattern, v, is_global, &exp,
|
this->add_exact_match(pattern, v, is_global, &exp,
|
this->exact_[exp.language]);
|
this->exact_[exp.language]);
|
}
|
}
|
}
|
}
|
|
|
// Return the name to match given a name, a language code, and two
|
// Return the name to match given a name, a language code, and two
|
// lazy demanglers.
|
// lazy demanglers.
|
|
|
const char*
|
const char*
|
Version_script_info::get_name_to_match(const char* name,
|
Version_script_info::get_name_to_match(const char* name,
|
int language,
|
int language,
|
Lazy_demangler* cpp_demangler,
|
Lazy_demangler* cpp_demangler,
|
Lazy_demangler* java_demangler) const
|
Lazy_demangler* java_demangler) const
|
{
|
{
|
switch (language)
|
switch (language)
|
{
|
{
|
case LANGUAGE_C:
|
case LANGUAGE_C:
|
return name;
|
return name;
|
case LANGUAGE_CXX:
|
case LANGUAGE_CXX:
|
return cpp_demangler->get();
|
return cpp_demangler->get();
|
case LANGUAGE_JAVA:
|
case LANGUAGE_JAVA:
|
return java_demangler->get();
|
return java_demangler->get();
|
default:
|
default:
|
gold_unreachable();
|
gold_unreachable();
|
}
|
}
|
}
|
}
|
|
|
// Look up SYMBOL_NAME in the list of versions. Return true if the
|
// Look up SYMBOL_NAME in the list of versions. Return true if the
|
// symbol is found, false if not. If the symbol is found, then if
|
// symbol is found, false if not. If the symbol is found, then if
|
// PVERSION is not NULL, set *PVERSION to the version tag, and if
|
// PVERSION is not NULL, set *PVERSION to the version tag, and if
|
// P_IS_GLOBAL is not NULL, set *P_IS_GLOBAL according to whether the
|
// P_IS_GLOBAL is not NULL, set *P_IS_GLOBAL according to whether the
|
// symbol is global or not.
|
// symbol is global or not.
|
|
|
bool
|
bool
|
Version_script_info::get_symbol_version(const char* symbol_name,
|
Version_script_info::get_symbol_version(const char* symbol_name,
|
std::string* pversion,
|
std::string* pversion,
|
bool* p_is_global) const
|
bool* p_is_global) const
|
{
|
{
|
Lazy_demangler cpp_demangled_name(symbol_name, DMGL_ANSI | DMGL_PARAMS);
|
Lazy_demangler cpp_demangled_name(symbol_name, DMGL_ANSI | DMGL_PARAMS);
|
Lazy_demangler java_demangled_name(symbol_name,
|
Lazy_demangler java_demangled_name(symbol_name,
|
DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
|
DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
|
|
|
gold_assert(this->is_finalized_);
|
gold_assert(this->is_finalized_);
|
for (int i = 0; i < LANGUAGE_COUNT; ++i)
|
for (int i = 0; i < LANGUAGE_COUNT; ++i)
|
{
|
{
|
Exact* exact = this->exact_[i];
|
Exact* exact = this->exact_[i];
|
if (exact == NULL)
|
if (exact == NULL)
|
continue;
|
continue;
|
|
|
const char* name_to_match = this->get_name_to_match(symbol_name, i,
|
const char* name_to_match = this->get_name_to_match(symbol_name, i,
|
&cpp_demangled_name,
|
&cpp_demangled_name,
|
&java_demangled_name);
|
&java_demangled_name);
|
if (name_to_match == NULL)
|
if (name_to_match == NULL)
|
{
|
{
|
// If the name can not be demangled, the GNU linker goes
|
// If the name can not be demangled, the GNU linker goes
|
// ahead and tries to match it anyhow. That does not
|
// ahead and tries to match it anyhow. That does not
|
// make sense to me and I have not implemented it.
|
// make sense to me and I have not implemented it.
|
continue;
|
continue;
|
}
|
}
|
|
|
Exact::const_iterator pe = exact->find(name_to_match);
|
Exact::const_iterator pe = exact->find(name_to_match);
|
if (pe != exact->end())
|
if (pe != exact->end())
|
{
|
{
|
const Version_tree_match& vtm(pe->second);
|
const Version_tree_match& vtm(pe->second);
|
if (vtm.ambiguous != NULL)
|
if (vtm.ambiguous != NULL)
|
gold_warning(_("using '%s' as version for '%s' which is also "
|
gold_warning(_("using '%s' as version for '%s' which is also "
|
"named in version '%s' in script"),
|
"named in version '%s' in script"),
|
vtm.real->tag.c_str(), name_to_match,
|
vtm.real->tag.c_str(), name_to_match,
|
vtm.ambiguous->tag.c_str());
|
vtm.ambiguous->tag.c_str());
|
|
|
if (pversion != NULL)
|
if (pversion != NULL)
|
*pversion = vtm.real->tag;
|
*pversion = vtm.real->tag;
|
if (p_is_global != NULL)
|
if (p_is_global != NULL)
|
*p_is_global = vtm.is_global;
|
*p_is_global = vtm.is_global;
|
|
|
// If we are using --no-undefined-version, and this is a
|
// If we are using --no-undefined-version, and this is a
|
// global symbol, we have to record that we have found this
|
// global symbol, we have to record that we have found this
|
// symbol, so that we don't warn about it. We have to do
|
// symbol, so that we don't warn about it. We have to do
|
// this now, because otherwise we have no way to get from a
|
// this now, because otherwise we have no way to get from a
|
// non-C language back to the demangled name that we
|
// non-C language back to the demangled name that we
|
// matched.
|
// matched.
|
if (p_is_global != NULL && vtm.is_global)
|
if (p_is_global != NULL && vtm.is_global)
|
vtm.expression->was_matched_by_symbol = true;
|
vtm.expression->was_matched_by_symbol = true;
|
|
|
return true;
|
return true;
|
}
|
}
|
}
|
}
|
|
|
// Look through the glob patterns in reverse order.
|
// Look through the glob patterns in reverse order.
|
|
|
for (Globs::const_reverse_iterator p = this->globs_.rbegin();
|
for (Globs::const_reverse_iterator p = this->globs_.rbegin();
|
p != this->globs_.rend();
|
p != this->globs_.rend();
|
++p)
|
++p)
|
{
|
{
|
int language = p->expression->language;
|
int language = p->expression->language;
|
const char* name_to_match = this->get_name_to_match(symbol_name,
|
const char* name_to_match = this->get_name_to_match(symbol_name,
|
language,
|
language,
|
&cpp_demangled_name,
|
&cpp_demangled_name,
|
&java_demangled_name);
|
&java_demangled_name);
|
if (name_to_match == NULL)
|
if (name_to_match == NULL)
|
continue;
|
continue;
|
|
|
if (fnmatch(p->expression->pattern.c_str(), name_to_match,
|
if (fnmatch(p->expression->pattern.c_str(), name_to_match,
|
FNM_NOESCAPE) == 0)
|
FNM_NOESCAPE) == 0)
|
{
|
{
|
if (pversion != NULL)
|
if (pversion != NULL)
|
*pversion = p->version->tag;
|
*pversion = p->version->tag;
|
if (p_is_global != NULL)
|
if (p_is_global != NULL)
|
*p_is_global = p->is_global;
|
*p_is_global = p->is_global;
|
return true;
|
return true;
|
}
|
}
|
}
|
}
|
|
|
// Finally, there may be a wildcard.
|
// Finally, there may be a wildcard.
|
if (this->default_version_ != NULL)
|
if (this->default_version_ != NULL)
|
{
|
{
|
if (pversion != NULL)
|
if (pversion != NULL)
|
*pversion = this->default_version_->tag;
|
*pversion = this->default_version_->tag;
|
if (p_is_global != NULL)
|
if (p_is_global != NULL)
|
*p_is_global = this->default_is_global_;
|
*p_is_global = this->default_is_global_;
|
return true;
|
return true;
|
}
|
}
|
|
|
return false;
|
return false;
|
}
|
}
|
|
|
// Give an error if any exact symbol names (not wildcards) appear in a
|
// Give an error if any exact symbol names (not wildcards) appear in a
|
// version script, but there is no such symbol.
|
// version script, but there is no such symbol.
|
|
|
void
|
void
|
Version_script_info::check_unmatched_names(const Symbol_table* symtab) const
|
Version_script_info::check_unmatched_names(const Symbol_table* symtab) const
|
{
|
{
|
for (size_t i = 0; i < this->version_trees_.size(); ++i)
|
for (size_t i = 0; i < this->version_trees_.size(); ++i)
|
{
|
{
|
const Version_tree* vt = this->version_trees_[i];
|
const Version_tree* vt = this->version_trees_[i];
|
if (vt->global == NULL)
|
if (vt->global == NULL)
|
continue;
|
continue;
|
for (size_t j = 0; j < vt->global->expressions.size(); ++j)
|
for (size_t j = 0; j < vt->global->expressions.size(); ++j)
|
{
|
{
|
const Version_expression& expression(vt->global->expressions[j]);
|
const Version_expression& expression(vt->global->expressions[j]);
|
|
|
// Ignore cases where we used the version because we saw a
|
// Ignore cases where we used the version because we saw a
|
// symbol that we looked up. Note that
|
// symbol that we looked up. Note that
|
// WAS_MATCHED_BY_SYMBOL will be true even if the symbol was
|
// WAS_MATCHED_BY_SYMBOL will be true even if the symbol was
|
// not a definition. That's OK as in that case we most
|
// not a definition. That's OK as in that case we most
|
// likely gave an undefined symbol error anyhow.
|
// likely gave an undefined symbol error anyhow.
|
if (expression.was_matched_by_symbol)
|
if (expression.was_matched_by_symbol)
|
continue;
|
continue;
|
|
|
// Just ignore names which are in languages other than C.
|
// Just ignore names which are in languages other than C.
|
// We have no way to look them up in the symbol table.
|
// We have no way to look them up in the symbol table.
|
if (expression.language != LANGUAGE_C)
|
if (expression.language != LANGUAGE_C)
|
continue;
|
continue;
|
|
|
// Remove backslash quoting, and ignore wildcard patterns.
|
// Remove backslash quoting, and ignore wildcard patterns.
|
std::string pattern = expression.pattern;
|
std::string pattern = expression.pattern;
|
if (!expression.exact_match)
|
if (!expression.exact_match)
|
{
|
{
|
if (this->unquote(&pattern))
|
if (this->unquote(&pattern))
|
continue;
|
continue;
|
}
|
}
|
|
|
if (symtab->lookup(pattern.c_str(), vt->tag.c_str()) == NULL)
|
if (symtab->lookup(pattern.c_str(), vt->tag.c_str()) == NULL)
|
gold_error(_("version script assignment of %s to symbol %s "
|
gold_error(_("version script assignment of %s to symbol %s "
|
"failed: symbol not defined"),
|
"failed: symbol not defined"),
|
vt->tag.c_str(), pattern.c_str());
|
vt->tag.c_str(), pattern.c_str());
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
struct Version_dependency_list*
|
struct Version_dependency_list*
|
Version_script_info::allocate_dependency_list()
|
Version_script_info::allocate_dependency_list()
|
{
|
{
|
dependency_lists_.push_back(new Version_dependency_list);
|
dependency_lists_.push_back(new Version_dependency_list);
|
return dependency_lists_.back();
|
return dependency_lists_.back();
|
}
|
}
|
|
|
struct Version_expression_list*
|
struct Version_expression_list*
|
Version_script_info::allocate_expression_list()
|
Version_script_info::allocate_expression_list()
|
{
|
{
|
expression_lists_.push_back(new Version_expression_list);
|
expression_lists_.push_back(new Version_expression_list);
|
return expression_lists_.back();
|
return expression_lists_.back();
|
}
|
}
|
|
|
struct Version_tree*
|
struct Version_tree*
|
Version_script_info::allocate_version_tree()
|
Version_script_info::allocate_version_tree()
|
{
|
{
|
version_trees_.push_back(new Version_tree);
|
version_trees_.push_back(new Version_tree);
|
return version_trees_.back();
|
return version_trees_.back();
|
}
|
}
|
|
|
// Print for debugging.
|
// Print for debugging.
|
|
|
void
|
void
|
Version_script_info::print(FILE* f) const
|
Version_script_info::print(FILE* f) const
|
{
|
{
|
if (this->empty())
|
if (this->empty())
|
return;
|
return;
|
|
|
fprintf(f, "VERSION {");
|
fprintf(f, "VERSION {");
|
|
|
for (size_t i = 0; i < this->version_trees_.size(); ++i)
|
for (size_t i = 0; i < this->version_trees_.size(); ++i)
|
{
|
{
|
const Version_tree* vt = this->version_trees_[i];
|
const Version_tree* vt = this->version_trees_[i];
|
|
|
if (vt->tag.empty())
|
if (vt->tag.empty())
|
fprintf(f, " {\n");
|
fprintf(f, " {\n");
|
else
|
else
|
fprintf(f, " %s {\n", vt->tag.c_str());
|
fprintf(f, " %s {\n", vt->tag.c_str());
|
|
|
if (vt->global != NULL)
|
if (vt->global != NULL)
|
{
|
{
|
fprintf(f, " global :\n");
|
fprintf(f, " global :\n");
|
this->print_expression_list(f, vt->global);
|
this->print_expression_list(f, vt->global);
|
}
|
}
|
|
|
if (vt->local != NULL)
|
if (vt->local != NULL)
|
{
|
{
|
fprintf(f, " local :\n");
|
fprintf(f, " local :\n");
|
this->print_expression_list(f, vt->local);
|
this->print_expression_list(f, vt->local);
|
}
|
}
|
|
|
fprintf(f, " }");
|
fprintf(f, " }");
|
if (vt->dependencies != NULL)
|
if (vt->dependencies != NULL)
|
{
|
{
|
const Version_dependency_list* deps = vt->dependencies;
|
const Version_dependency_list* deps = vt->dependencies;
|
for (size_t j = 0; j < deps->dependencies.size(); ++j)
|
for (size_t j = 0; j < deps->dependencies.size(); ++j)
|
{
|
{
|
if (j < deps->dependencies.size() - 1)
|
if (j < deps->dependencies.size() - 1)
|
fprintf(f, "\n");
|
fprintf(f, "\n");
|
fprintf(f, " %s", deps->dependencies[j].c_str());
|
fprintf(f, " %s", deps->dependencies[j].c_str());
|
}
|
}
|
}
|
}
|
fprintf(f, ";\n");
|
fprintf(f, ";\n");
|
}
|
}
|
|
|
fprintf(f, "}\n");
|
fprintf(f, "}\n");
|
}
|
}
|
|
|
void
|
void
|
Version_script_info::print_expression_list(
|
Version_script_info::print_expression_list(
|
FILE* f,
|
FILE* f,
|
const Version_expression_list* vel) const
|
const Version_expression_list* vel) const
|
{
|
{
|
Version_script_info::Language current_language = LANGUAGE_C;
|
Version_script_info::Language current_language = LANGUAGE_C;
|
for (size_t i = 0; i < vel->expressions.size(); ++i)
|
for (size_t i = 0; i < vel->expressions.size(); ++i)
|
{
|
{
|
const Version_expression& ve(vel->expressions[i]);
|
const Version_expression& ve(vel->expressions[i]);
|
|
|
if (ve.language != current_language)
|
if (ve.language != current_language)
|
{
|
{
|
if (current_language != LANGUAGE_C)
|
if (current_language != LANGUAGE_C)
|
fprintf(f, " }\n");
|
fprintf(f, " }\n");
|
switch (ve.language)
|
switch (ve.language)
|
{
|
{
|
case LANGUAGE_C:
|
case LANGUAGE_C:
|
break;
|
break;
|
case LANGUAGE_CXX:
|
case LANGUAGE_CXX:
|
fprintf(f, " extern \"C++\" {\n");
|
fprintf(f, " extern \"C++\" {\n");
|
break;
|
break;
|
case LANGUAGE_JAVA:
|
case LANGUAGE_JAVA:
|
fprintf(f, " extern \"Java\" {\n");
|
fprintf(f, " extern \"Java\" {\n");
|
break;
|
break;
|
default:
|
default:
|
gold_unreachable();
|
gold_unreachable();
|
}
|
}
|
current_language = ve.language;
|
current_language = ve.language;
|
}
|
}
|
|
|
fprintf(f, " ");
|
fprintf(f, " ");
|
if (current_language != LANGUAGE_C)
|
if (current_language != LANGUAGE_C)
|
fprintf(f, " ");
|
fprintf(f, " ");
|
|
|
if (ve.exact_match)
|
if (ve.exact_match)
|
fprintf(f, "\"");
|
fprintf(f, "\"");
|
fprintf(f, "%s", ve.pattern.c_str());
|
fprintf(f, "%s", ve.pattern.c_str());
|
if (ve.exact_match)
|
if (ve.exact_match)
|
fprintf(f, "\"");
|
fprintf(f, "\"");
|
|
|
fprintf(f, "\n");
|
fprintf(f, "\n");
|
}
|
}
|
|
|
if (current_language != LANGUAGE_C)
|
if (current_language != LANGUAGE_C)
|
fprintf(f, " }\n");
|
fprintf(f, " }\n");
|
}
|
}
|
|
|
} // End namespace gold.
|
} // End namespace gold.
|
|
|
// The remaining functions are extern "C", so it's clearer to not put
|
// The remaining functions are extern "C", so it's clearer to not put
|
// them in namespace gold.
|
// them in namespace gold.
|
|
|
using namespace gold;
|
using namespace gold;
|
|
|
// This function is called by the bison parser to return the next
|
// This function is called by the bison parser to return the next
|
// token.
|
// token.
|
|
|
extern "C" int
|
extern "C" int
|
yylex(YYSTYPE* lvalp, void* closurev)
|
yylex(YYSTYPE* lvalp, void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
const Token* token = closure->next_token();
|
const Token* token = closure->next_token();
|
switch (token->classification())
|
switch (token->classification())
|
{
|
{
|
default:
|
default:
|
gold_unreachable();
|
gold_unreachable();
|
|
|
case Token::TOKEN_INVALID:
|
case Token::TOKEN_INVALID:
|
yyerror(closurev, "invalid character");
|
yyerror(closurev, "invalid character");
|
return 0;
|
return 0;
|
|
|
case Token::TOKEN_EOF:
|
case Token::TOKEN_EOF:
|
return 0;
|
return 0;
|
|
|
case Token::TOKEN_STRING:
|
case Token::TOKEN_STRING:
|
{
|
{
|
// This is either a keyword or a STRING.
|
// This is either a keyword or a STRING.
|
size_t len;
|
size_t len;
|
const char* str = token->string_value(&len);
|
const char* str = token->string_value(&len);
|
int parsecode = 0;
|
int parsecode = 0;
|
switch (closure->lex_mode())
|
switch (closure->lex_mode())
|
{
|
{
|
case Lex::LINKER_SCRIPT:
|
case Lex::LINKER_SCRIPT:
|
parsecode = script_keywords.keyword_to_parsecode(str, len);
|
parsecode = script_keywords.keyword_to_parsecode(str, len);
|
break;
|
break;
|
case Lex::VERSION_SCRIPT:
|
case Lex::VERSION_SCRIPT:
|
parsecode = version_script_keywords.keyword_to_parsecode(str, len);
|
parsecode = version_script_keywords.keyword_to_parsecode(str, len);
|
break;
|
break;
|
case Lex::DYNAMIC_LIST:
|
case Lex::DYNAMIC_LIST:
|
parsecode = dynamic_list_keywords.keyword_to_parsecode(str, len);
|
parsecode = dynamic_list_keywords.keyword_to_parsecode(str, len);
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
if (parsecode != 0)
|
if (parsecode != 0)
|
return parsecode;
|
return parsecode;
|
lvalp->string.value = str;
|
lvalp->string.value = str;
|
lvalp->string.length = len;
|
lvalp->string.length = len;
|
return STRING;
|
return STRING;
|
}
|
}
|
|
|
case Token::TOKEN_QUOTED_STRING:
|
case Token::TOKEN_QUOTED_STRING:
|
lvalp->string.value = token->string_value(&lvalp->string.length);
|
lvalp->string.value = token->string_value(&lvalp->string.length);
|
return QUOTED_STRING;
|
return QUOTED_STRING;
|
|
|
case Token::TOKEN_OPERATOR:
|
case Token::TOKEN_OPERATOR:
|
return token->operator_value();
|
return token->operator_value();
|
|
|
case Token::TOKEN_INTEGER:
|
case Token::TOKEN_INTEGER:
|
lvalp->integer = token->integer_value();
|
lvalp->integer = token->integer_value();
|
return INTEGER;
|
return INTEGER;
|
}
|
}
|
}
|
}
|
|
|
// This function is called by the bison parser to report an error.
|
// This function is called by the bison parser to report an error.
|
|
|
extern "C" void
|
extern "C" void
|
yyerror(void* closurev, const char* message)
|
yyerror(void* closurev, const char* message)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
gold_error(_("%s:%d:%d: %s"), closure->filename(), closure->lineno(),
|
gold_error(_("%s:%d:%d: %s"), closure->filename(), closure->lineno(),
|
closure->charpos(), message);
|
closure->charpos(), message);
|
}
|
}
|
|
|
// Called by the bison parser to add an external symbol to the link.
|
// Called by the bison parser to add an external symbol to the link.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_extern(void* closurev, const char* name, size_t length)
|
script_add_extern(void* closurev, const char* name, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->add_symbol_reference(name, length);
|
closure->script_options()->add_symbol_reference(name, length);
|
}
|
}
|
|
|
// Called by the bison parser to add a file to the link.
|
// Called by the bison parser to add a file to the link.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_file(void* closurev, const char* name, size_t length)
|
script_add_file(void* closurev, const char* name, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
|
|
// If this is an absolute path, and we found the script in the
|
// If this is an absolute path, and we found the script in the
|
// sysroot, then we want to prepend the sysroot to the file name.
|
// sysroot, then we want to prepend the sysroot to the file name.
|
// For example, this is how we handle a cross link to the x86_64
|
// For example, this is how we handle a cross link to the x86_64
|
// libc.so, which refers to /lib/libc.so.6.
|
// libc.so, which refers to /lib/libc.so.6.
|
std::string name_string(name, length);
|
std::string name_string(name, length);
|
const char* extra_search_path = ".";
|
const char* extra_search_path = ".";
|
std::string script_directory;
|
std::string script_directory;
|
if (IS_ABSOLUTE_PATH(name_string.c_str()))
|
if (IS_ABSOLUTE_PATH(name_string.c_str()))
|
{
|
{
|
if (closure->is_in_sysroot())
|
if (closure->is_in_sysroot())
|
{
|
{
|
const std::string& sysroot(parameters->options().sysroot());
|
const std::string& sysroot(parameters->options().sysroot());
|
gold_assert(!sysroot.empty());
|
gold_assert(!sysroot.empty());
|
name_string = sysroot + name_string;
|
name_string = sysroot + name_string;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
// In addition to checking the normal library search path, we
|
// In addition to checking the normal library search path, we
|
// also want to check in the script-directory.
|
// also want to check in the script-directory.
|
const char* slash = strrchr(closure->filename(), '/');
|
const char* slash = strrchr(closure->filename(), '/');
|
if (slash != NULL)
|
if (slash != NULL)
|
{
|
{
|
script_directory.assign(closure->filename(),
|
script_directory.assign(closure->filename(),
|
slash - closure->filename() + 1);
|
slash - closure->filename() + 1);
|
extra_search_path = script_directory.c_str();
|
extra_search_path = script_directory.c_str();
|
}
|
}
|
}
|
}
|
|
|
Input_file_argument file(name_string.c_str(),
|
Input_file_argument file(name_string.c_str(),
|
Input_file_argument::INPUT_FILE_TYPE_FILE,
|
Input_file_argument::INPUT_FILE_TYPE_FILE,
|
extra_search_path, false,
|
extra_search_path, false,
|
closure->position_dependent_options());
|
closure->position_dependent_options());
|
Input_argument& arg = closure->inputs()->add_file(file);
|
Input_argument& arg = closure->inputs()->add_file(file);
|
arg.set_script_info(closure->script_info());
|
arg.set_script_info(closure->script_info());
|
}
|
}
|
|
|
// Called by the bison parser to add a library to the link.
|
// Called by the bison parser to add a library to the link.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_library(void* closurev, const char* name, size_t length)
|
script_add_library(void* closurev, const char* name, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
std::string name_string(name, length);
|
std::string name_string(name, length);
|
|
|
if (name_string[0] != 'l')
|
if (name_string[0] != 'l')
|
gold_error(_("library name must be prefixed with -l"));
|
gold_error(_("library name must be prefixed with -l"));
|
|
|
Input_file_argument file(name_string.c_str() + 1,
|
Input_file_argument file(name_string.c_str() + 1,
|
Input_file_argument::INPUT_FILE_TYPE_LIBRARY,
|
Input_file_argument::INPUT_FILE_TYPE_LIBRARY,
|
"", false,
|
"", false,
|
closure->position_dependent_options());
|
closure->position_dependent_options());
|
Input_argument& arg = closure->inputs()->add_file(file);
|
Input_argument& arg = closure->inputs()->add_file(file);
|
arg.set_script_info(closure->script_info());
|
arg.set_script_info(closure->script_info());
|
}
|
}
|
|
|
// Called by the bison parser to start a group. If we are already in
|
// Called by the bison parser to start a group. If we are already in
|
// a group, that means that this script was invoked within a
|
// a group, that means that this script was invoked within a
|
// --start-group --end-group sequence on the command line, or that
|
// --start-group --end-group sequence on the command line, or that
|
// this script was found in a GROUP of another script. In that case,
|
// this script was found in a GROUP of another script. In that case,
|
// we simply continue the existing group, rather than starting a new
|
// we simply continue the existing group, rather than starting a new
|
// one. It is possible to construct a case in which this will do
|
// one. It is possible to construct a case in which this will do
|
// something other than what would happen if we did a recursive group,
|
// something other than what would happen if we did a recursive group,
|
// but it's hard to imagine why the different behaviour would be
|
// but it's hard to imagine why the different behaviour would be
|
// useful for a real program. Avoiding recursive groups is simpler
|
// useful for a real program. Avoiding recursive groups is simpler
|
// and more efficient.
|
// and more efficient.
|
|
|
extern "C" void
|
extern "C" void
|
script_start_group(void* closurev)
|
script_start_group(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (!closure->in_group())
|
if (!closure->in_group())
|
closure->inputs()->start_group();
|
closure->inputs()->start_group();
|
}
|
}
|
|
|
// Called by the bison parser at the end of a group.
|
// Called by the bison parser at the end of a group.
|
|
|
extern "C" void
|
extern "C" void
|
script_end_group(void* closurev)
|
script_end_group(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (!closure->in_group())
|
if (!closure->in_group())
|
closure->inputs()->end_group();
|
closure->inputs()->end_group();
|
}
|
}
|
|
|
// Called by the bison parser to start an AS_NEEDED list.
|
// Called by the bison parser to start an AS_NEEDED list.
|
|
|
extern "C" void
|
extern "C" void
|
script_start_as_needed(void* closurev)
|
script_start_as_needed(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->position_dependent_options().set_as_needed(true);
|
closure->position_dependent_options().set_as_needed(true);
|
}
|
}
|
|
|
// Called by the bison parser at the end of an AS_NEEDED list.
|
// Called by the bison parser at the end of an AS_NEEDED list.
|
|
|
extern "C" void
|
extern "C" void
|
script_end_as_needed(void* closurev)
|
script_end_as_needed(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->position_dependent_options().set_as_needed(false);
|
closure->position_dependent_options().set_as_needed(false);
|
}
|
}
|
|
|
// Called by the bison parser to set the entry symbol.
|
// Called by the bison parser to set the entry symbol.
|
|
|
extern "C" void
|
extern "C" void
|
script_set_entry(void* closurev, const char* entry, size_t length)
|
script_set_entry(void* closurev, const char* entry, size_t length)
|
{
|
{
|
// We'll parse this exactly the same as --entry=ENTRY on the commandline
|
// We'll parse this exactly the same as --entry=ENTRY on the commandline
|
// TODO(csilvers): FIXME -- call set_entry directly.
|
// TODO(csilvers): FIXME -- call set_entry directly.
|
std::string arg("--entry=");
|
std::string arg("--entry=");
|
arg.append(entry, length);
|
arg.append(entry, length);
|
script_parse_option(closurev, arg.c_str(), arg.size());
|
script_parse_option(closurev, arg.c_str(), arg.size());
|
}
|
}
|
|
|
// Called by the bison parser to set whether to define common symbols.
|
// Called by the bison parser to set whether to define common symbols.
|
|
|
extern "C" void
|
extern "C" void
|
script_set_common_allocation(void* closurev, int set)
|
script_set_common_allocation(void* closurev, int set)
|
{
|
{
|
const char* arg = set != 0 ? "--define-common" : "--no-define-common";
|
const char* arg = set != 0 ? "--define-common" : "--no-define-common";
|
script_parse_option(closurev, arg, strlen(arg));
|
script_parse_option(closurev, arg, strlen(arg));
|
}
|
}
|
|
|
// Called by the bison parser to refer to a symbol.
|
// Called by the bison parser to refer to a symbol.
|
|
|
extern "C" Expression*
|
extern "C" Expression*
|
script_symbol(void* closurev, const char* name, size_t length)
|
script_symbol(void* closurev, const char* name, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (length != 1 || name[0] != '.')
|
if (length != 1 || name[0] != '.')
|
closure->script_options()->add_symbol_reference(name, length);
|
closure->script_options()->add_symbol_reference(name, length);
|
return script_exp_string(name, length);
|
return script_exp_string(name, length);
|
}
|
}
|
|
|
// Called by the bison parser to define a symbol.
|
// Called by the bison parser to define a symbol.
|
|
|
extern "C" void
|
extern "C" void
|
script_set_symbol(void* closurev, const char* name, size_t length,
|
script_set_symbol(void* closurev, const char* name, size_t length,
|
Expression* value, int providei, int hiddeni)
|
Expression* value, int providei, int hiddeni)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
const bool provide = providei != 0;
|
const bool provide = providei != 0;
|
const bool hidden = hiddeni != 0;
|
const bool hidden = hiddeni != 0;
|
closure->script_options()->add_symbol_assignment(name, length,
|
closure->script_options()->add_symbol_assignment(name, length,
|
closure->parsing_defsym(),
|
closure->parsing_defsym(),
|
value, provide, hidden);
|
value, provide, hidden);
|
closure->clear_skip_on_incompatible_target();
|
closure->clear_skip_on_incompatible_target();
|
}
|
}
|
|
|
// Called by the bison parser to add an assertion.
|
// Called by the bison parser to add an assertion.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_assertion(void* closurev, Expression* check, const char* message,
|
script_add_assertion(void* closurev, Expression* check, const char* message,
|
size_t messagelen)
|
size_t messagelen)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->add_assertion(check, message, messagelen);
|
closure->script_options()->add_assertion(check, message, messagelen);
|
closure->clear_skip_on_incompatible_target();
|
closure->clear_skip_on_incompatible_target();
|
}
|
}
|
|
|
// Called by the bison parser to parse an OPTION.
|
// Called by the bison parser to parse an OPTION.
|
|
|
extern "C" void
|
extern "C" void
|
script_parse_option(void* closurev, const char* option, size_t length)
|
script_parse_option(void* closurev, const char* option, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
// We treat the option as a single command-line option, even if
|
// We treat the option as a single command-line option, even if
|
// it has internal whitespace.
|
// it has internal whitespace.
|
if (closure->command_line() == NULL)
|
if (closure->command_line() == NULL)
|
{
|
{
|
// There are some options that we could handle here--e.g.,
|
// There are some options that we could handle here--e.g.,
|
// -lLIBRARY. Should we bother?
|
// -lLIBRARY. Should we bother?
|
gold_warning(_("%s:%d:%d: ignoring command OPTION; OPTION is only valid"
|
gold_warning(_("%s:%d:%d: ignoring command OPTION; OPTION is only valid"
|
" for scripts specified via -T/--script"),
|
" for scripts specified via -T/--script"),
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->filename(), closure->lineno(), closure->charpos());
|
}
|
}
|
else
|
else
|
{
|
{
|
bool past_a_double_dash_option = false;
|
bool past_a_double_dash_option = false;
|
const char* mutable_option = strndup(option, length);
|
const char* mutable_option = strndup(option, length);
|
gold_assert(mutable_option != NULL);
|
gold_assert(mutable_option != NULL);
|
closure->command_line()->process_one_option(1, &mutable_option, 0,
|
closure->command_line()->process_one_option(1, &mutable_option, 0,
|
&past_a_double_dash_option);
|
&past_a_double_dash_option);
|
// The General_options class will quite possibly store a pointer
|
// The General_options class will quite possibly store a pointer
|
// into mutable_option, so we can't free it. In cases the class
|
// into mutable_option, so we can't free it. In cases the class
|
// does not store such a pointer, this is a memory leak. Alas. :(
|
// does not store such a pointer, this is a memory leak. Alas. :(
|
}
|
}
|
closure->clear_skip_on_incompatible_target();
|
closure->clear_skip_on_incompatible_target();
|
}
|
}
|
|
|
// Called by the bison parser to handle OUTPUT_FORMAT. OUTPUT_FORMAT
|
// Called by the bison parser to handle OUTPUT_FORMAT. OUTPUT_FORMAT
|
// takes either one or three arguments. In the three argument case,
|
// takes either one or three arguments. In the three argument case,
|
// the format depends on the endianness option, which we don't
|
// the format depends on the endianness option, which we don't
|
// currently support (FIXME). If we see an OUTPUT_FORMAT for the
|
// currently support (FIXME). If we see an OUTPUT_FORMAT for the
|
// wrong format, then we want to search for a new file. Returning 0
|
// wrong format, then we want to search for a new file. Returning 0
|
// here will cause the parser to immediately abort.
|
// here will cause the parser to immediately abort.
|
|
|
extern "C" int
|
extern "C" int
|
script_check_output_format(void* closurev,
|
script_check_output_format(void* closurev,
|
const char* default_name, size_t default_length,
|
const char* default_name, size_t default_length,
|
const char*, size_t, const char*, size_t)
|
const char*, size_t, const char*, size_t)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
std::string name(default_name, default_length);
|
std::string name(default_name, default_length);
|
Target* target = select_target_by_name(name.c_str());
|
Target* target = select_target_by_bfd_name(name.c_str());
|
if (target == NULL || !parameters->is_compatible_target(target))
|
if (target == NULL || !parameters->is_compatible_target(target))
|
{
|
{
|
if (closure->skip_on_incompatible_target())
|
if (closure->skip_on_incompatible_target())
|
{
|
{
|
closure->set_found_incompatible_target();
|
closure->set_found_incompatible_target();
|
return 0;
|
return 0;
|
}
|
}
|
// FIXME: Should we warn about the unknown target?
|
// FIXME: Should we warn about the unknown target?
|
}
|
}
|
return 1;
|
return 1;
|
}
|
}
|
|
|
// Called by the bison parser to handle TARGET.
|
// Called by the bison parser to handle TARGET.
|
|
|
extern "C" void
|
extern "C" void
|
script_set_target(void* closurev, const char* target, size_t len)
|
script_set_target(void* closurev, const char* target, size_t len)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
std::string s(target, len);
|
std::string s(target, len);
|
General_options::Object_format format_enum;
|
General_options::Object_format format_enum;
|
format_enum = General_options::string_to_object_format(s.c_str());
|
format_enum = General_options::string_to_object_format(s.c_str());
|
closure->position_dependent_options().set_format_enum(format_enum);
|
closure->position_dependent_options().set_format_enum(format_enum);
|
}
|
}
|
|
|
// Called by the bison parser to handle SEARCH_DIR. This is handled
|
// Called by the bison parser to handle SEARCH_DIR. This is handled
|
// exactly like a -L option.
|
// exactly like a -L option.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_search_dir(void* closurev, const char* option, size_t length)
|
script_add_search_dir(void* closurev, const char* option, size_t length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (closure->command_line() == NULL)
|
if (closure->command_line() == NULL)
|
gold_warning(_("%s:%d:%d: ignoring SEARCH_DIR; SEARCH_DIR is only valid"
|
gold_warning(_("%s:%d:%d: ignoring SEARCH_DIR; SEARCH_DIR is only valid"
|
" for scripts specified via -T/--script"),
|
" for scripts specified via -T/--script"),
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->filename(), closure->lineno(), closure->charpos());
|
else if (!closure->command_line()->options().nostdlib())
|
else if (!closure->command_line()->options().nostdlib())
|
{
|
{
|
std::string s = "-L" + std::string(option, length);
|
std::string s = "-L" + std::string(option, length);
|
script_parse_option(closurev, s.c_str(), s.size());
|
script_parse_option(closurev, s.c_str(), s.size());
|
}
|
}
|
}
|
}
|
|
|
/* Called by the bison parser to push the lexer into expression
|
/* Called by the bison parser to push the lexer into expression
|
mode. */
|
mode. */
|
|
|
extern "C" void
|
extern "C" void
|
script_push_lex_into_expression_mode(void* closurev)
|
script_push_lex_into_expression_mode(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->push_lex_mode(Lex::EXPRESSION);
|
closure->push_lex_mode(Lex::EXPRESSION);
|
}
|
}
|
|
|
/* Called by the bison parser to push the lexer into version
|
/* Called by the bison parser to push the lexer into version
|
mode. */
|
mode. */
|
|
|
extern "C" void
|
extern "C" void
|
script_push_lex_into_version_mode(void* closurev)
|
script_push_lex_into_version_mode(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (closure->version_script()->is_finalized())
|
if (closure->version_script()->is_finalized())
|
gold_error(_("%s:%d:%d: invalid use of VERSION in input file"),
|
gold_error(_("%s:%d:%d: invalid use of VERSION in input file"),
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->push_lex_mode(Lex::VERSION_SCRIPT);
|
closure->push_lex_mode(Lex::VERSION_SCRIPT);
|
}
|
}
|
|
|
/* Called by the bison parser to pop the lexer mode. */
|
/* Called by the bison parser to pop the lexer mode. */
|
|
|
extern "C" void
|
extern "C" void
|
script_pop_lex_mode(void* closurev)
|
script_pop_lex_mode(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->pop_lex_mode();
|
closure->pop_lex_mode();
|
}
|
}
|
|
|
// Register an entire version node. For example:
|
// Register an entire version node. For example:
|
//
|
//
|
// GLIBC_2.1 {
|
// GLIBC_2.1 {
|
// global: foo;
|
// global: foo;
|
// } GLIBC_2.0;
|
// } GLIBC_2.0;
|
//
|
//
|
// - tag is "GLIBC_2.1"
|
// - tag is "GLIBC_2.1"
|
// - tree contains the information "global: foo"
|
// - tree contains the information "global: foo"
|
// - deps contains "GLIBC_2.0"
|
// - deps contains "GLIBC_2.0"
|
|
|
extern "C" void
|
extern "C" void
|
script_register_vers_node(void*,
|
script_register_vers_node(void*,
|
const char* tag,
|
const char* tag,
|
int taglen,
|
int taglen,
|
struct Version_tree* tree,
|
struct Version_tree* tree,
|
struct Version_dependency_list* deps)
|
struct Version_dependency_list* deps)
|
{
|
{
|
gold_assert(tree != NULL);
|
gold_assert(tree != NULL);
|
tree->dependencies = deps;
|
tree->dependencies = deps;
|
if (tag != NULL)
|
if (tag != NULL)
|
tree->tag = std::string(tag, taglen);
|
tree->tag = std::string(tag, taglen);
|
}
|
}
|
|
|
// Add a dependencies to the list of existing dependencies, if any,
|
// Add a dependencies to the list of existing dependencies, if any,
|
// and return the expanded list.
|
// and return the expanded list.
|
|
|
extern "C" struct Version_dependency_list*
|
extern "C" struct Version_dependency_list*
|
script_add_vers_depend(void* closurev,
|
script_add_vers_depend(void* closurev,
|
struct Version_dependency_list* all_deps,
|
struct Version_dependency_list* all_deps,
|
const char* depend_to_add, int deplen)
|
const char* depend_to_add, int deplen)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (all_deps == NULL)
|
if (all_deps == NULL)
|
all_deps = closure->version_script()->allocate_dependency_list();
|
all_deps = closure->version_script()->allocate_dependency_list();
|
all_deps->dependencies.push_back(std::string(depend_to_add, deplen));
|
all_deps->dependencies.push_back(std::string(depend_to_add, deplen));
|
return all_deps;
|
return all_deps;
|
}
|
}
|
|
|
// Add a pattern expression to an existing list of expressions, if any.
|
// Add a pattern expression to an existing list of expressions, if any.
|
|
|
extern "C" struct Version_expression_list*
|
extern "C" struct Version_expression_list*
|
script_new_vers_pattern(void* closurev,
|
script_new_vers_pattern(void* closurev,
|
struct Version_expression_list* expressions,
|
struct Version_expression_list* expressions,
|
const char* pattern, int patlen, int exact_match)
|
const char* pattern, int patlen, int exact_match)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (expressions == NULL)
|
if (expressions == NULL)
|
expressions = closure->version_script()->allocate_expression_list();
|
expressions = closure->version_script()->allocate_expression_list();
|
expressions->expressions.push_back(
|
expressions->expressions.push_back(
|
Version_expression(std::string(pattern, patlen),
|
Version_expression(std::string(pattern, patlen),
|
closure->get_current_language(),
|
closure->get_current_language(),
|
static_cast<bool>(exact_match)));
|
static_cast<bool>(exact_match)));
|
return expressions;
|
return expressions;
|
}
|
}
|
|
|
// Attaches b to the end of a, and clears b. So a = a + b and b = {}.
|
// Attaches b to the end of a, and clears b. So a = a + b and b = {}.
|
|
|
extern "C" struct Version_expression_list*
|
extern "C" struct Version_expression_list*
|
script_merge_expressions(struct Version_expression_list* a,
|
script_merge_expressions(struct Version_expression_list* a,
|
struct Version_expression_list* b)
|
struct Version_expression_list* b)
|
{
|
{
|
a->expressions.insert(a->expressions.end(),
|
a->expressions.insert(a->expressions.end(),
|
b->expressions.begin(), b->expressions.end());
|
b->expressions.begin(), b->expressions.end());
|
// We could delete b and remove it from expressions_lists_, but
|
// We could delete b and remove it from expressions_lists_, but
|
// that's a lot of work. This works just as well.
|
// that's a lot of work. This works just as well.
|
b->expressions.clear();
|
b->expressions.clear();
|
return a;
|
return a;
|
}
|
}
|
|
|
// Combine the global and local expressions into a a Version_tree.
|
// Combine the global and local expressions into a a Version_tree.
|
|
|
extern "C" struct Version_tree*
|
extern "C" struct Version_tree*
|
script_new_vers_node(void* closurev,
|
script_new_vers_node(void* closurev,
|
struct Version_expression_list* global,
|
struct Version_expression_list* global,
|
struct Version_expression_list* local)
|
struct Version_expression_list* local)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Version_tree* tree = closure->version_script()->allocate_version_tree();
|
Version_tree* tree = closure->version_script()->allocate_version_tree();
|
tree->global = global;
|
tree->global = global;
|
tree->local = local;
|
tree->local = local;
|
return tree;
|
return tree;
|
}
|
}
|
|
|
// Handle a transition in language, such as at the
|
// Handle a transition in language, such as at the
|
// start or end of 'extern "C++"'
|
// start or end of 'extern "C++"'
|
|
|
extern "C" void
|
extern "C" void
|
version_script_push_lang(void* closurev, const char* lang, int langlen)
|
version_script_push_lang(void* closurev, const char* lang, int langlen)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
std::string language(lang, langlen);
|
std::string language(lang, langlen);
|
Version_script_info::Language code;
|
Version_script_info::Language code;
|
if (language.empty() || language == "C")
|
if (language.empty() || language == "C")
|
code = Version_script_info::LANGUAGE_C;
|
code = Version_script_info::LANGUAGE_C;
|
else if (language == "C++")
|
else if (language == "C++")
|
code = Version_script_info::LANGUAGE_CXX;
|
code = Version_script_info::LANGUAGE_CXX;
|
else if (language == "Java")
|
else if (language == "Java")
|
code = Version_script_info::LANGUAGE_JAVA;
|
code = Version_script_info::LANGUAGE_JAVA;
|
else
|
else
|
{
|
{
|
char* buf = new char[langlen + 100];
|
char* buf = new char[langlen + 100];
|
snprintf(buf, langlen + 100,
|
snprintf(buf, langlen + 100,
|
_("unrecognized version script language '%s'"),
|
_("unrecognized version script language '%s'"),
|
language.c_str());
|
language.c_str());
|
yyerror(closurev, buf);
|
yyerror(closurev, buf);
|
delete[] buf;
|
delete[] buf;
|
code = Version_script_info::LANGUAGE_C;
|
code = Version_script_info::LANGUAGE_C;
|
}
|
}
|
closure->push_language(code);
|
closure->push_language(code);
|
}
|
}
|
|
|
extern "C" void
|
extern "C" void
|
version_script_pop_lang(void* closurev)
|
version_script_pop_lang(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->pop_language();
|
closure->pop_language();
|
}
|
}
|
|
|
// Called by the bison parser to start a SECTIONS clause.
|
// Called by the bison parser to start a SECTIONS clause.
|
|
|
extern "C" void
|
extern "C" void
|
script_start_sections(void* closurev)
|
script_start_sections(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->script_sections()->start_sections();
|
closure->script_options()->script_sections()->start_sections();
|
closure->clear_skip_on_incompatible_target();
|
closure->clear_skip_on_incompatible_target();
|
}
|
}
|
|
|
// Called by the bison parser to finish a SECTIONS clause.
|
// Called by the bison parser to finish a SECTIONS clause.
|
|
|
extern "C" void
|
extern "C" void
|
script_finish_sections(void* closurev)
|
script_finish_sections(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->script_sections()->finish_sections();
|
closure->script_options()->script_sections()->finish_sections();
|
}
|
}
|
|
|
// Start processing entries for an output section.
|
// Start processing entries for an output section.
|
|
|
extern "C" void
|
extern "C" void
|
script_start_output_section(void* closurev, const char* name, size_t namelen,
|
script_start_output_section(void* closurev, const char* name, size_t namelen,
|
const struct Parser_output_section_header* header)
|
const struct Parser_output_section_header* header)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->script_sections()->start_output_section(name,
|
closure->script_options()->script_sections()->start_output_section(name,
|
namelen,
|
namelen,
|
header);
|
header);
|
}
|
}
|
|
|
// Finish processing entries for an output section.
|
// Finish processing entries for an output section.
|
|
|
extern "C" void
|
extern "C" void
|
script_finish_output_section(void* closurev,
|
script_finish_output_section(void* closurev,
|
const struct Parser_output_section_trailer* trail)
|
const struct Parser_output_section_trailer* trail)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->script_sections()->finish_output_section(trail);
|
closure->script_options()->script_sections()->finish_output_section(trail);
|
}
|
}
|
|
|
// Add a data item (e.g., "WORD (0)") to the current output section.
|
// Add a data item (e.g., "WORD (0)") to the current output section.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_data(void* closurev, int data_token, Expression* val)
|
script_add_data(void* closurev, int data_token, Expression* val)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
int size;
|
int size;
|
bool is_signed = true;
|
bool is_signed = true;
|
switch (data_token)
|
switch (data_token)
|
{
|
{
|
case QUAD:
|
case QUAD:
|
size = 8;
|
size = 8;
|
is_signed = false;
|
is_signed = false;
|
break;
|
break;
|
case SQUAD:
|
case SQUAD:
|
size = 8;
|
size = 8;
|
break;
|
break;
|
case LONG:
|
case LONG:
|
size = 4;
|
size = 4;
|
break;
|
break;
|
case SHORT:
|
case SHORT:
|
size = 2;
|
size = 2;
|
break;
|
break;
|
case BYTE:
|
case BYTE:
|
size = 1;
|
size = 1;
|
break;
|
break;
|
default:
|
default:
|
gold_unreachable();
|
gold_unreachable();
|
}
|
}
|
closure->script_options()->script_sections()->add_data(size, is_signed, val);
|
closure->script_options()->script_sections()->add_data(size, is_signed, val);
|
}
|
}
|
|
|
// Add a clause setting the fill value to the current output section.
|
// Add a clause setting the fill value to the current output section.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_fill(void* closurev, Expression* val)
|
script_add_fill(void* closurev, Expression* val)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
closure->script_options()->script_sections()->add_fill(val);
|
closure->script_options()->script_sections()->add_fill(val);
|
}
|
}
|
|
|
// Add a new input section specification to the current output
|
// Add a new input section specification to the current output
|
// section.
|
// section.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_input_section(void* closurev,
|
script_add_input_section(void* closurev,
|
const struct Input_section_spec* spec,
|
const struct Input_section_spec* spec,
|
int keepi)
|
int keepi)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
bool keep = keepi != 0;
|
bool keep = keepi != 0;
|
closure->script_options()->script_sections()->add_input_section(spec, keep);
|
closure->script_options()->script_sections()->add_input_section(spec, keep);
|
}
|
}
|
|
|
// When we see DATA_SEGMENT_ALIGN we record that following output
|
// When we see DATA_SEGMENT_ALIGN we record that following output
|
// sections may be relro.
|
// sections may be relro.
|
|
|
extern "C" void
|
extern "C" void
|
script_data_segment_align(void* closurev)
|
script_data_segment_align(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (!closure->script_options()->saw_sections_clause())
|
if (!closure->script_options()->saw_sections_clause())
|
gold_error(_("%s:%d:%d: DATA_SEGMENT_ALIGN not in SECTIONS clause"),
|
gold_error(_("%s:%d:%d: DATA_SEGMENT_ALIGN not in SECTIONS clause"),
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->filename(), closure->lineno(), closure->charpos());
|
else
|
else
|
closure->script_options()->script_sections()->data_segment_align();
|
closure->script_options()->script_sections()->data_segment_align();
|
}
|
}
|
|
|
// When we see DATA_SEGMENT_RELRO_END we know that all output sections
|
// When we see DATA_SEGMENT_RELRO_END we know that all output sections
|
// since DATA_SEGMENT_ALIGN should be relro.
|
// since DATA_SEGMENT_ALIGN should be relro.
|
|
|
extern "C" void
|
extern "C" void
|
script_data_segment_relro_end(void* closurev)
|
script_data_segment_relro_end(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (!closure->script_options()->saw_sections_clause())
|
if (!closure->script_options()->saw_sections_clause())
|
gold_error(_("%s:%d:%d: DATA_SEGMENT_ALIGN not in SECTIONS clause"),
|
gold_error(_("%s:%d:%d: DATA_SEGMENT_ALIGN not in SECTIONS clause"),
|
closure->filename(), closure->lineno(), closure->charpos());
|
closure->filename(), closure->lineno(), closure->charpos());
|
else
|
else
|
closure->script_options()->script_sections()->data_segment_relro_end();
|
closure->script_options()->script_sections()->data_segment_relro_end();
|
}
|
}
|
|
|
// Create a new list of string/sort pairs.
|
// Create a new list of string/sort pairs.
|
|
|
extern "C" String_sort_list_ptr
|
extern "C" String_sort_list_ptr
|
script_new_string_sort_list(const struct Wildcard_section* string_sort)
|
script_new_string_sort_list(const struct Wildcard_section* string_sort)
|
{
|
{
|
return new String_sort_list(1, *string_sort);
|
return new String_sort_list(1, *string_sort);
|
}
|
}
|
|
|
// Add an entry to a list of string/sort pairs. The way the parser
|
// Add an entry to a list of string/sort pairs. The way the parser
|
// works permits us to simply modify the first parameter, rather than
|
// works permits us to simply modify the first parameter, rather than
|
// copy the vector.
|
// copy the vector.
|
|
|
extern "C" String_sort_list_ptr
|
extern "C" String_sort_list_ptr
|
script_string_sort_list_add(String_sort_list_ptr pv,
|
script_string_sort_list_add(String_sort_list_ptr pv,
|
const struct Wildcard_section* string_sort)
|
const struct Wildcard_section* string_sort)
|
{
|
{
|
if (pv == NULL)
|
if (pv == NULL)
|
return script_new_string_sort_list(string_sort);
|
return script_new_string_sort_list(string_sort);
|
else
|
else
|
{
|
{
|
pv->push_back(*string_sort);
|
pv->push_back(*string_sort);
|
return pv;
|
return pv;
|
}
|
}
|
}
|
}
|
|
|
// Create a new list of strings.
|
// Create a new list of strings.
|
|
|
extern "C" String_list_ptr
|
extern "C" String_list_ptr
|
script_new_string_list(const char* str, size_t len)
|
script_new_string_list(const char* str, size_t len)
|
{
|
{
|
return new String_list(1, std::string(str, len));
|
return new String_list(1, std::string(str, len));
|
}
|
}
|
|
|
// Add an element to a list of strings. The way the parser works
|
// Add an element to a list of strings. The way the parser works
|
// permits us to simply modify the first parameter, rather than copy
|
// permits us to simply modify the first parameter, rather than copy
|
// the vector.
|
// the vector.
|
|
|
extern "C" String_list_ptr
|
extern "C" String_list_ptr
|
script_string_list_push_back(String_list_ptr pv, const char* str, size_t len)
|
script_string_list_push_back(String_list_ptr pv, const char* str, size_t len)
|
{
|
{
|
if (pv == NULL)
|
if (pv == NULL)
|
return script_new_string_list(str, len);
|
return script_new_string_list(str, len);
|
else
|
else
|
{
|
{
|
pv->push_back(std::string(str, len));
|
pv->push_back(std::string(str, len));
|
return pv;
|
return pv;
|
}
|
}
|
}
|
}
|
|
|
// Concatenate two string lists. Either or both may be NULL. The way
|
// Concatenate two string lists. Either or both may be NULL. The way
|
// the parser works permits us to modify the parameters, rather than
|
// the parser works permits us to modify the parameters, rather than
|
// copy the vector.
|
// copy the vector.
|
|
|
extern "C" String_list_ptr
|
extern "C" String_list_ptr
|
script_string_list_append(String_list_ptr pv1, String_list_ptr pv2)
|
script_string_list_append(String_list_ptr pv1, String_list_ptr pv2)
|
{
|
{
|
if (pv1 == NULL)
|
if (pv1 == NULL)
|
return pv2;
|
return pv2;
|
if (pv2 == NULL)
|
if (pv2 == NULL)
|
return pv1;
|
return pv1;
|
pv1->insert(pv1->end(), pv2->begin(), pv2->end());
|
pv1->insert(pv1->end(), pv2->begin(), pv2->end());
|
return pv1;
|
return pv1;
|
}
|
}
|
|
|
// Add a new program header.
|
// Add a new program header.
|
|
|
extern "C" void
|
extern "C" void
|
script_add_phdr(void* closurev, const char* name, size_t namelen,
|
script_add_phdr(void* closurev, const char* name, size_t namelen,
|
unsigned int type, const Phdr_info* info)
|
unsigned int type, const Phdr_info* info)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
bool includes_filehdr = info->includes_filehdr != 0;
|
bool includes_filehdr = info->includes_filehdr != 0;
|
bool includes_phdrs = info->includes_phdrs != 0;
|
bool includes_phdrs = info->includes_phdrs != 0;
|
bool is_flags_valid = info->is_flags_valid != 0;
|
bool is_flags_valid = info->is_flags_valid != 0;
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
|
ss->add_phdr(name, namelen, type, includes_filehdr, includes_phdrs,
|
ss->add_phdr(name, namelen, type, includes_filehdr, includes_phdrs,
|
is_flags_valid, info->flags, info->load_address);
|
is_flags_valid, info->flags, info->load_address);
|
closure->clear_skip_on_incompatible_target();
|
closure->clear_skip_on_incompatible_target();
|
}
|
}
|
|
|
// Convert a program header string to a type.
|
// Convert a program header string to a type.
|
|
|
#define PHDR_TYPE(NAME) { #NAME, sizeof(#NAME) - 1, elfcpp::NAME }
|
#define PHDR_TYPE(NAME) { #NAME, sizeof(#NAME) - 1, elfcpp::NAME }
|
|
|
static struct
|
static struct
|
{
|
{
|
const char* name;
|
const char* name;
|
size_t namelen;
|
size_t namelen;
|
unsigned int val;
|
unsigned int val;
|
} phdr_type_names[] =
|
} phdr_type_names[] =
|
{
|
{
|
PHDR_TYPE(PT_NULL),
|
PHDR_TYPE(PT_NULL),
|
PHDR_TYPE(PT_LOAD),
|
PHDR_TYPE(PT_LOAD),
|
PHDR_TYPE(PT_DYNAMIC),
|
PHDR_TYPE(PT_DYNAMIC),
|
PHDR_TYPE(PT_INTERP),
|
PHDR_TYPE(PT_INTERP),
|
PHDR_TYPE(PT_NOTE),
|
PHDR_TYPE(PT_NOTE),
|
PHDR_TYPE(PT_SHLIB),
|
PHDR_TYPE(PT_SHLIB),
|
PHDR_TYPE(PT_PHDR),
|
PHDR_TYPE(PT_PHDR),
|
PHDR_TYPE(PT_TLS),
|
PHDR_TYPE(PT_TLS),
|
PHDR_TYPE(PT_GNU_EH_FRAME),
|
PHDR_TYPE(PT_GNU_EH_FRAME),
|
PHDR_TYPE(PT_GNU_STACK),
|
PHDR_TYPE(PT_GNU_STACK),
|
PHDR_TYPE(PT_GNU_RELRO)
|
PHDR_TYPE(PT_GNU_RELRO)
|
};
|
};
|
|
|
extern "C" unsigned int
|
extern "C" unsigned int
|
script_phdr_string_to_type(void* closurev, const char* name, size_t namelen)
|
script_phdr_string_to_type(void* closurev, const char* name, size_t namelen)
|
{
|
{
|
for (unsigned int i = 0;
|
for (unsigned int i = 0;
|
i < sizeof(phdr_type_names) / sizeof(phdr_type_names[0]);
|
i < sizeof(phdr_type_names) / sizeof(phdr_type_names[0]);
|
++i)
|
++i)
|
if (namelen == phdr_type_names[i].namelen
|
if (namelen == phdr_type_names[i].namelen
|
&& strncmp(name, phdr_type_names[i].name, namelen) == 0)
|
&& strncmp(name, phdr_type_names[i].name, namelen) == 0)
|
return phdr_type_names[i].val;
|
return phdr_type_names[i].val;
|
yyerror(closurev, _("unknown PHDR type (try integer)"));
|
yyerror(closurev, _("unknown PHDR type (try integer)"));
|
return elfcpp::PT_NULL;
|
return elfcpp::PT_NULL;
|
}
|
}
|
|
|
extern "C" void
|
extern "C" void
|
script_saw_segment_start_expression(void* closurev)
|
script_saw_segment_start_expression(void* closurev)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
|
ss->set_saw_segment_start_expression(true);
|
ss->set_saw_segment_start_expression(true);
|
}
|
}
|
|
|
extern "C" void
|
extern "C" void
|
script_set_section_region(void* closurev, const char* name, size_t namelen,
|
script_set_section_region(void* closurev, const char* name, size_t namelen,
|
int set_vma)
|
int set_vma)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
if (!closure->script_options()->saw_sections_clause())
|
if (!closure->script_options()->saw_sections_clause())
|
{
|
{
|
gold_error(_("%s:%d:%d: MEMORY region '%.*s' referred to outside of "
|
gold_error(_("%s:%d:%d: MEMORY region '%.*s' referred to outside of "
|
"SECTIONS clause"),
|
"SECTIONS clause"),
|
closure->filename(), closure->lineno(), closure->charpos(),
|
closure->filename(), closure->lineno(), closure->charpos(),
|
static_cast<int>(namelen), name);
|
static_cast<int>(namelen), name);
|
return;
|
return;
|
}
|
}
|
|
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
|
Memory_region* mr = ss->find_memory_region(name, namelen);
|
Memory_region* mr = ss->find_memory_region(name, namelen);
|
if (mr == NULL)
|
if (mr == NULL)
|
{
|
{
|
gold_error(_("%s:%d:%d: MEMORY region '%.*s' not declared"),
|
gold_error(_("%s:%d:%d: MEMORY region '%.*s' not declared"),
|
closure->filename(), closure->lineno(), closure->charpos(),
|
closure->filename(), closure->lineno(), closure->charpos(),
|
static_cast<int>(namelen), name);
|
static_cast<int>(namelen), name);
|
return;
|
return;
|
}
|
}
|
|
|
ss->set_memory_region(mr, set_vma);
|
ss->set_memory_region(mr, set_vma);
|
}
|
}
|
|
|
extern "C" void
|
extern "C" void
|
script_add_memory(void* closurev, const char* name, size_t namelen,
|
script_add_memory(void* closurev, const char* name, size_t namelen,
|
unsigned int attrs, Expression* origin, Expression* length)
|
unsigned int attrs, Expression* origin, Expression* length)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
|
ss->add_memory_region(name, namelen, attrs, origin, length);
|
ss->add_memory_region(name, namelen, attrs, origin, length);
|
}
|
}
|
|
|
extern "C" unsigned int
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extern "C" unsigned int
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script_parse_memory_attr(void* closurev, const char* attrs, size_t attrlen,
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script_parse_memory_attr(void* closurev, const char* attrs, size_t attrlen,
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int invert)
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int invert)
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{
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{
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int attributes = 0;
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int attributes = 0;
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|
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while (attrlen--)
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while (attrlen--)
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switch (*attrs++)
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switch (*attrs++)
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{
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{
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case 'R':
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case 'R':
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case 'r':
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case 'r':
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attributes |= MEM_READABLE; break;
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attributes |= MEM_READABLE; break;
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case 'W':
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case 'W':
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case 'w':
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case 'w':
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attributes |= MEM_READABLE | MEM_WRITEABLE; break;
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attributes |= MEM_READABLE | MEM_WRITEABLE; break;
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case 'X':
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case 'X':
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case 'x':
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case 'x':
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attributes |= MEM_EXECUTABLE; break;
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attributes |= MEM_EXECUTABLE; break;
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case 'A':
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case 'A':
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case 'a':
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case 'a':
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attributes |= MEM_ALLOCATABLE; break;
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attributes |= MEM_ALLOCATABLE; break;
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case 'I':
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case 'I':
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case 'i':
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case 'i':
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case 'L':
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case 'L':
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case 'l':
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case 'l':
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attributes |= MEM_INITIALIZED; break;
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attributes |= MEM_INITIALIZED; break;
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default:
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default:
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yyerror(closurev, _("unknown MEMORY attribute"));
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yyerror(closurev, _("unknown MEMORY attribute"));
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}
|
}
|
|
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if (invert)
|
if (invert)
|
attributes = (~ attributes) & MEM_ATTR_MASK;
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attributes = (~ attributes) & MEM_ATTR_MASK;
|
|
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return attributes;
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return attributes;
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}
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}
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|
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extern "C" void
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extern "C" void
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script_include_directive(void* closurev, const char*, size_t)
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script_include_directive(void* closurev, const char*, size_t)
|
{
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{
|
// FIXME: Implement ?
|
// FIXME: Implement ?
|
yyerror (closurev, _("GOLD does not currently support INCLUDE directives"));
|
yyerror (closurev, _("GOLD does not currently support INCLUDE directives"));
|
}
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}
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|
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// Functions for memory regions.
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// Functions for memory regions.
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|
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extern "C" Expression*
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extern "C" Expression*
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script_exp_function_origin(void* closurev, const char* name, size_t namelen)
|
script_exp_function_origin(void* closurev, const char* name, size_t namelen)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
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Expression* origin = ss->find_memory_region_origin(name, namelen);
|
Expression* origin = ss->find_memory_region_origin(name, namelen);
|
|
|
if (origin == NULL)
|
if (origin == NULL)
|
{
|
{
|
gold_error(_("undefined memory region '%s' referenced "
|
gold_error(_("undefined memory region '%s' referenced "
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"in ORIGIN expression"),
|
"in ORIGIN expression"),
|
name);
|
name);
|
// Create a dummy expression to prevent crashes later on.
|
// Create a dummy expression to prevent crashes later on.
|
origin = script_exp_integer(0);
|
origin = script_exp_integer(0);
|
}
|
}
|
|
|
return origin;
|
return origin;
|
}
|
}
|
|
|
extern "C" Expression*
|
extern "C" Expression*
|
script_exp_function_length(void* closurev, const char* name, size_t namelen)
|
script_exp_function_length(void* closurev, const char* name, size_t namelen)
|
{
|
{
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
|
Script_sections* ss = closure->script_options()->script_sections();
|
Script_sections* ss = closure->script_options()->script_sections();
|
Expression* length = ss->find_memory_region_length(name, namelen);
|
Expression* length = ss->find_memory_region_length(name, namelen);
|
|
|
if (length == NULL)
|
if (length == NULL)
|
{
|
{
|
gold_error(_("undefined memory region '%s' referenced "
|
gold_error(_("undefined memory region '%s' referenced "
|
"in LENGTH expression"),
|
"in LENGTH expression"),
|
name);
|
name);
|
// Create a dummy expression to prevent crashes later on.
|
// Create a dummy expression to prevent crashes later on.
|
length = script_exp_integer(0);
|
length = script_exp_integer(0);
|
}
|
}
|
|
|
return length;
|
return length;
|
}
|
}
|
|
|
