468 lines
12 KiB
C++
468 lines
12 KiB
C++
// -*- C++ -*-
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// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2, or (at
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// your option) any later version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this library; see the file COPYING. If not, write to
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// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
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// MA 02111-1307, USA.
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// As a special exception, you may use this file as part of a free
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// software library without restriction. Specifically, if other files
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// instantiate templates or use macros or inline functions from this
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// file, or you compile this file and link it with other files to
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// produce an executable, this file does not by itself cause the
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// resulting executable to be covered by the GNU General Public
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// License. This exception does not however invalidate any other
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// reasons why the executable file might be covered by the GNU General
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// Public License.
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// Benjamin Kosnik <bkoz@redhat.com>
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#include "testsuite_abi.h"
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#include <sstream>
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#include <fstream>
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#include <iostream>
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using namespace std;
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void
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symbol::init(string& data)
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{
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const char delim = ':';
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const char version_delim = '@';
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const string::size_type npos = string::npos;
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string::size_type n = 0;
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// Set the type.
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if (data.find("FUNC") == 0)
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type = symbol::function;
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else if (data.find("OBJECT") == 0)
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type = symbol::object;
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else
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type = symbol::error;
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n = data.find_first_of(delim);
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if (n != npos)
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data.erase(data.begin(), data.begin() + n + 1);
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// Iff object, get size info.
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if (type == symbol::object)
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{
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n = data.find_first_of(delim);
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if (n != npos)
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{
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string size(data.begin(), data.begin() + n);
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istringstream iss(size);
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int x;
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iss >> x;
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if (!iss.fail())
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size = x;
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data.erase(data.begin(), data.begin() + n + 1);
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}
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}
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// Set the name.
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n = data.find_first_of(version_delim);
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if (n != npos)
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{
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// Found version string.
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name = string(data.begin(), data.begin() + n);
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n = data.find_last_of(version_delim);
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data.erase(data.begin(), data.begin() + n + 1);
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// Set version name.
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version_name = data;
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}
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else
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{
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// No versioning info.
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name = string(data.begin(), data.end());
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data.erase(data.begin(), data.end());
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}
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// Set the demangled name.
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demangled_name = demangle(name);
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}
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void
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symbol::print() const
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{
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const char tab = '\t';
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cout << tab << name << endl;
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cout << tab << demangled_name << endl;
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cout << tab << version_name << endl;
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string type_string;
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switch (type)
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{
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case none:
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type_string = "none";
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break;
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case function:
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type_string = "function";
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break;
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case object:
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type_string = "object";
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break;
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case error:
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type_string = "error";
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break;
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default:
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type_string = "<default>";
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}
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cout << tab << type_string << endl;
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if (type == object)
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cout << tab << size << endl;
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string status_string;
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switch (status)
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{
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case unknown:
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status_string = "unknown";
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break;
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case added:
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status_string = "added";
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break;
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case subtracted:
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status_string = "subtracted";
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break;
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case compatible:
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status_string = "compatible";
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break;
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case incompatible:
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status_string = "incompatible";
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break;
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default:
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status_string = "<default>";
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}
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cout << tab << status_string << endl;
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}
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bool
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check_version(const symbol& test, bool added)
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{
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typedef std::vector<std::string> compat_list;
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static compat_list known_versions;
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if (known_versions.empty())
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{
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known_versions.push_back("GLIBCPP_3.2"); // base version
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known_versions.push_back("GLIBCPP_3.2.1");
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known_versions.push_back("GLIBCPP_3.2.2");
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known_versions.push_back("GLIBCPP_3.2.3"); // gcc-3.3.0
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known_versions.push_back("GLIBCXX_3.4");
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known_versions.push_back("GLIBCXX_3.4.1");
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known_versions.push_back("GLIBCXX_3.4.2");
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known_versions.push_back("GLIBCXX_3.4.3");
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known_versions.push_back("GLIBCXX_3.4.4");
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known_versions.push_back("CXXABI_1.2");
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known_versions.push_back("CXXABI_1.2.1");
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known_versions.push_back("CXXABI_1.3");
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known_versions.push_back("CXXABI_1.3.1");
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}
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compat_list::iterator begin = known_versions.begin();
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compat_list::iterator end = known_versions.end();
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// Check version names for compatibility...
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compat_list::iterator it1 = find(begin, end, test.version_name);
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// Check for weak label.
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compat_list::iterator it2 = find(begin, end, test.name);
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// Check that added symbols aren't added in the base version.
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bool compat = true;
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if (added && test.version_name == known_versions[0])
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compat = false;
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if (it1 == end && it2 == end)
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compat = false;
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return compat;
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}
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bool
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check_compatible(const symbol& lhs, const symbol& rhs, bool verbose)
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{
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bool ret = true;
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const char tab = '\t';
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// Check to see if symbol_objects are compatible.
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if (lhs.type != rhs.type)
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{
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ret = false;
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if (verbose)
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cout << tab << "incompatible types" << endl;
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}
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if (lhs.name != rhs.name)
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{
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ret = false;
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if (verbose)
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cout << tab << "incompatible names" << endl;
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}
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if (lhs.size != rhs.size)
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{
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ret = false;
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if (verbose)
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{
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cout << tab << "incompatible sizes" << endl;
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cout << tab << lhs.size << endl;
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cout << tab << rhs.size << endl;
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}
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}
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if (lhs.version_name != rhs.version_name
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&& !check_version(lhs) && !check_version(rhs))
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{
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ret = false;
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if (verbose)
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{
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cout << tab << "incompatible versions" << endl;
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cout << tab << lhs.version_name << endl;
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cout << tab << rhs.version_name << endl;
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}
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}
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if (verbose)
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cout << endl;
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return ret;
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}
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bool
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has_symbol(const string& mangled, const symbols& s) throw()
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{
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const symbol_names& names = s.first;
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symbol_names::const_iterator i = find(names.begin(), names.end(), mangled);
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return i != names.end();
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}
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symbol&
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get_symbol(const string& mangled, const symbols& s)
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{
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const symbol_names& names = s.first;
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symbol_names::const_iterator i = find(names.begin(), names.end(), mangled);
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if (i != names.end())
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{
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symbol_objects objects = s.second;
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return objects[mangled];
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}
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else
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{
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ostringstream os;
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os << "get_symbol failed for symbol " << mangled;
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__throw_logic_error(os.str().c_str());
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}
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}
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void
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examine_symbol(const char* name, const char* file)
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{
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try
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{
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symbols s = create_symbols(file);
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symbol& sym = get_symbol(name, s);
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sym.print();
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}
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catch(...)
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{ __throw_exception_again; }
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}
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void
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compare_symbols(const char* baseline_file, const char* test_file,
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bool verbose)
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{
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// Input both lists of symbols into container.
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symbols baseline = create_symbols(baseline_file);
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symbols test = create_symbols(test_file);
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symbol_names& baseline_names = baseline.first;
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symbol_objects& baseline_objects = baseline.second;
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symbol_names& test_names = test.first;
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symbol_objects& test_objects = test.second;
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// Sanity check results.
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const symbol_names::size_type baseline_size = baseline_names.size();
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const symbol_names::size_type test_size = test_names.size();
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if (!baseline_size || !test_size)
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{
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cerr << "Problems parsing the list of exported symbols." << endl;
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exit(2);
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}
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// Sort out names.
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// Assuming baseline_names, test_names are both unique w/ no duplicates.
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//
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// The names added to missing_names are baseline_names not found in
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// test_names
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// -> symbols that have been deleted.
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//
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// The names added to added_names are test_names are names not in
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// baseline_names
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// -> symbols that have been added.
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symbol_names shared_names;
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symbol_names missing_names;
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symbol_names added_names = test_names;
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for (size_t i = 0; i < baseline_size; ++i)
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{
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string what(baseline_names[i]);
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symbol_names::iterator end = added_names.end();
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symbol_names::iterator it = find(added_names.begin(), end, what);
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if (it != end)
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{
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// Found.
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shared_names.push_back(what);
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added_names.erase(it);
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}
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else
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missing_names.push_back(what);
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}
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// Check missing names for compatibility.
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typedef pair<symbol, symbol> symbol_pair;
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vector<symbol_pair> incompatible;
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for (size_t j = 0; j < missing_names.size(); ++j)
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{
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symbol base = baseline_objects[missing_names[j]];
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incompatible.push_back(symbol_pair(base, base));
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}
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// Check shared names for compatibility.
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for (size_t k = 0; k < shared_names.size(); ++k)
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{
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symbol base = baseline_objects[shared_names[k]];
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symbol test = test_objects[shared_names[k]];
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if (!check_compatible(base, test))
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incompatible.push_back(symbol_pair(base, test));
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}
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// Check added names for compatibility.
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for (size_t l = 0; l < added_names.size(); ++l)
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{
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symbol test = test_objects[added_names[l]];
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if (!check_version(test, true))
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incompatible.push_back(symbol_pair(test, test));
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}
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// Report results.
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if (verbose && added_names.size())
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{
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cout << added_names.size() << " added symbols " << endl;
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for (size_t j = 0; j < added_names.size() ; ++j)
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test_objects[added_names[j]].print();
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}
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if (verbose && missing_names.size())
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{
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cout << missing_names.size() << " missing symbols " << endl;
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for (size_t j = 0; j < missing_names.size() ; ++j)
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baseline_objects[missing_names[j]].print();
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}
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if (verbose && incompatible.size())
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{
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cout << incompatible.size() << " incompatible symbols " << endl;
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for (size_t j = 0; j < incompatible.size() ; ++j)
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{
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// First, report name.
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const symbol& base = incompatible[j].first;
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const symbol& test = incompatible[j].second;
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test.print();
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// Second, report reason or reasons incompatible.
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check_compatible(base, test, true);
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}
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}
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cout << "\n\t\t=== libstdc++-v3 check-abi Summary ===" << endl;
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cout << endl;
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cout << "# of added symbols:\t\t " << added_names.size() << endl;
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cout << "# of missing symbols:\t\t " << missing_names.size() << endl;
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cout << "# of incompatible symbols:\t " << incompatible.size() << endl;
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cout << endl;
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cout << "using: " << baseline_file << endl;
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}
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symbols
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create_symbols(const char* file)
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{
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symbols s;
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ifstream ifs(file);
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if (ifs.is_open())
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{
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// Organize file data into container of symbol objects.
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symbol_names& names = s.first;
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symbol_objects& objects = s.second;
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const string empty;
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string line = empty;
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while (getline(ifs, line).good())
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{
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symbol tmp;
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tmp.init(line);
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objects[tmp.name] = tmp;
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names.push_back(tmp.name);
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line = empty;
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}
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}
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else
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{
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ostringstream os;
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os << "create_symbols failed for file " << file;
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__throw_runtime_error(os.str().c_str());
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}
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return s;
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}
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const char*
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demangle(const std::string& mangled)
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{
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const char* name;
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if (mangled[0] != '_' || mangled[1] != 'Z')
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{
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// This is not a mangled symbol, thus has "C" linkage.
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name = mangled.c_str();
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}
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else
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{
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// Use __cxa_demangle to demangle.
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int status = 0;
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name = abi::__cxa_demangle(mangled.c_str(), 0, 0, &status);
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if (!name)
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{
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switch (status)
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{
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case 0:
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name = "error code = 0: success";
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break;
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case -1:
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name = "error code = -1: memory allocation failure";
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break;
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case -2:
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name = "error code = -2: invalid mangled name";
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break;
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case -3:
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name = "error code = -3: invalid arguments";
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break;
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default:
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name = "error code unknown - who knows what happened";
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}
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}
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}
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return name;
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}
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