447 lines
13 KiB
C++
447 lines
13 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2023 Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include "platform.h"
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#include "path.h"
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#include <cstring>
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#include <iostream>
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#include <limits>
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#include <vector>
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#include "xml.h"
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Platform::Platform()
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{
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set(Type::Native);
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}
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bool Platform::set(Type t)
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{
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switch (t) {
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case Type::Unspecified: // unknown type sizes (sizes etc are set but are not known)
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case Type::Native: // same as system this code was compile on
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type = t;
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sizeof_bool = sizeof(bool);
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sizeof_short = sizeof(short);
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sizeof_int = sizeof(int);
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sizeof_long = sizeof(long);
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sizeof_long_long = sizeof(long long);
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sizeof_float = sizeof(float);
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sizeof_double = sizeof(double);
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sizeof_long_double = sizeof(long double);
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sizeof_wchar_t = sizeof(wchar_t);
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sizeof_size_t = sizeof(std::size_t);
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sizeof_pointer = sizeof(void *);
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if (type == Type::Unspecified) {
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defaultSign = '\0';
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} else {
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defaultSign = std::numeric_limits<char>::is_signed ? 's' : 'u';
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}
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char_bit = 8;
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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return true;
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case Type::Win32W:
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case Type::Win32A:
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type = t;
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sizeof_bool = 1; // 4 in Visual C++ 4.2
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sizeof_short = 2;
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sizeof_int = 4;
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sizeof_long = 4;
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sizeof_long_long = 8;
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sizeof_float = 4;
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sizeof_double = 8;
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sizeof_long_double = 8;
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sizeof_wchar_t = 2;
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sizeof_size_t = 4;
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sizeof_pointer = 4;
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defaultSign = '\0';
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char_bit = 8;
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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return true;
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case Type::Win64:
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type = t;
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sizeof_bool = 1;
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sizeof_short = 2;
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sizeof_int = 4;
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sizeof_long = 4;
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sizeof_long_long = 8;
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sizeof_float = 4;
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sizeof_double = 8;
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sizeof_long_double = 8;
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sizeof_wchar_t = 2;
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sizeof_size_t = 8;
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sizeof_pointer = 8;
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defaultSign = '\0';
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char_bit = 8;
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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return true;
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case Type::Unix32:
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type = t;
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sizeof_bool = 1;
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sizeof_short = 2;
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sizeof_int = 4;
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sizeof_long = 4;
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sizeof_long_long = 8;
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sizeof_float = 4;
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sizeof_double = 8;
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sizeof_long_double = 12;
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sizeof_wchar_t = 4;
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sizeof_size_t = 4;
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sizeof_pointer = 4;
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defaultSign = '\0';
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char_bit = 8;
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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return true;
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case Type::Unix64:
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type = t;
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sizeof_bool = 1;
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sizeof_short = 2;
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sizeof_int = 4;
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sizeof_long = 8;
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sizeof_long_long = 8;
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sizeof_float = 4;
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sizeof_double = 8;
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sizeof_long_double = 16;
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sizeof_wchar_t = 4;
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sizeof_size_t = 8;
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sizeof_pointer = 8;
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defaultSign = '\0';
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char_bit = 8;
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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return true;
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case Type::File:
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// sizes are not set.
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return false;
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}
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// unsupported platform
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return false;
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}
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bool Platform::set(const std::string& platformstr, std::string& errstr, const std::vector<std::string>& paths, bool verbose)
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{
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if (platformstr == "win32A")
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set(Type::Win32A);
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else if (platformstr == "win32W")
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set(Type::Win32W);
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else if (platformstr == "win64")
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set(Type::Win64);
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else if (platformstr == "unix32")
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set(Type::Unix32);
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else if (platformstr == "unix64")
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set(Type::Unix64);
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else if (platformstr == "native")
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set(Type::Native);
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else if (platformstr == "unspecified")
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set(Type::Unspecified);
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else if (paths.empty()) {
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errstr = "unrecognized platform: '" + platformstr + "' (no lookup).";
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return false;
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}
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else {
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bool found = false;
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for (const std::string& path : paths) {
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if (verbose)
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std::cout << "looking for platform '" + platformstr + "' in '" + path + "'" << std::endl;
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if (loadFromFile(path.c_str(), platformstr, verbose)) {
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found = true;
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break;
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}
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}
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if (!found) {
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errstr = "unrecognized platform: '" + platformstr + "'.";
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return false;
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}
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}
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return true;
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}
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bool Platform::loadFromFile(const char exename[], const std::string &filename, bool verbose)
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{
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// TODO: only append .xml if missing
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// TODO: use native separators
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std::vector<std::string> filenames{
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filename,
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filename + ".xml",
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"platforms/" + filename,
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"platforms/" + filename + ".xml"
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};
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if (exename && (std::string::npos != Path::fromNativeSeparators(exename).find('/'))) {
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filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + filename);
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filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename);
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filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename + ".xml");
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}
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#ifdef FILESDIR
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std::string filesdir = FILESDIR;
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if (!filesdir.empty() && filesdir[filesdir.size()-1] != '/')
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filesdir += '/';
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filenames.push_back(filesdir + ("platforms/" + filename));
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filenames.push_back(filesdir + ("platforms/" + filename + ".xml"));
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#endif
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// open file..
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tinyxml2::XMLDocument doc;
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bool success = false;
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for (const std::string & f : filenames) {
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if (verbose)
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std::cout << "try to load platform file '" << f << "' ... ";
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if (doc.LoadFile(f.c_str()) == tinyxml2::XML_SUCCESS) {
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if (verbose)
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std::cout << "Success" << std::endl;
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success = true;
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break;
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}
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if (verbose)
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std::cout << doc.ErrorStr() << std::endl;
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}
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if (!success)
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return false;
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return loadFromXmlDocument(&doc);
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}
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static unsigned int xmlTextAsUInt(const tinyxml2::XMLElement* node, bool& error)
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{
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unsigned int retval = 0;
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if (node->QueryUnsignedText(&retval) != tinyxml2::XML_SUCCESS)
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error = true;
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return retval;
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}
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bool Platform::loadFromXmlDocument(const tinyxml2::XMLDocument *doc)
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{
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const tinyxml2::XMLElement * const rootnode = doc->FirstChildElement();
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if (!rootnode || std::strcmp(rootnode->Name(), "platform") != 0)
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return false;
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bool error = false;
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for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
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if (std::strcmp(node->Name(), "default-sign") == 0) {
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const char* str = node->GetText();
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if (str)
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defaultSign = *str;
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else
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error = true;
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} else if (std::strcmp(node->Name(), "char_bit") == 0)
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char_bit = xmlTextAsUInt(node, error);
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else if (std::strcmp(node->Name(), "sizeof") == 0) {
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for (const tinyxml2::XMLElement *sz = node->FirstChildElement(); sz; sz = sz->NextSiblingElement()) {
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if (std::strcmp(sz->Name(), "short") == 0)
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sizeof_short = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "bool") == 0)
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sizeof_bool = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "int") == 0)
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sizeof_int = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "long") == 0)
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sizeof_long = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "long-long") == 0)
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sizeof_long_long = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "float") == 0)
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sizeof_float = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "double") == 0)
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sizeof_double = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "long-double") == 0)
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sizeof_long_double = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "pointer") == 0)
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sizeof_pointer = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "size_t") == 0)
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sizeof_size_t = xmlTextAsUInt(sz, error);
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else if (std::strcmp(sz->Name(), "wchar_t") == 0)
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sizeof_wchar_t = xmlTextAsUInt(sz, error);
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}
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}
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}
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short_bit = char_bit * sizeof_short;
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int_bit = char_bit * sizeof_int;
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long_bit = char_bit * sizeof_long;
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long_long_bit = char_bit * sizeof_long_long;
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type = Type::File;
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return !error;
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}
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std::string Platform::getLimitsDefines(bool c99) const
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{
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std::string s;
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// climits / limits.h
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s += "CHAR_BIT=";
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s += std::to_string(char_bit);
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s += ";SCHAR_MIN=";
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s += std::to_string(min_value(char_bit));
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s += ";SCHAR_MAX=";
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s += std::to_string(max_value(char_bit));
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s += ";UCHAR_MAX=";
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s += std::to_string(max_value(char_bit+1));
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s += ";CHAR_MIN=";
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if (defaultSign == 'u')
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s += std::to_string(min_value(char_bit));
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else
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s += std::to_string(0);
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s += ";CHAR_MAX=";
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if (defaultSign == 'u')
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s += std::to_string(max_value(char_bit+1));
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else
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s += std::to_string(max_value(char_bit));
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// TODO
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//s += ";MB_LEN_MAX=";
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s += ";SHRT_MIN=";
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s += std::to_string(min_value(short_bit));
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s += ";SHRT_MAX=";
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s += std::to_string(max_value(short_bit));
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s += ";USHRT_MAX=";
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s += std::to_string(max_value(short_bit+1));
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s += ";INT_MIN=";
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s += std::to_string(min_value(int_bit));
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s += ";INT_MAX=";
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s += std::to_string(max_value(int_bit));
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s += ";UINT_MAX=";
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s += std::to_string(max_value(int_bit+1));
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s += ";LONG_MIN=";
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s += std::to_string(min_value(long_bit));
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s += ";LONG_MAX=";
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s += std::to_string(max_value(long_bit));
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s += ";ULONG_MAX=";
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s += std::to_string(max_value(long_bit+1));
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if (c99) {
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s += ";LLONG_MIN=";
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s += std::to_string(min_value(long_long_bit));
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s += ";LLONG_MAX=";
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s += std::to_string(max_value(long_long_bit));
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s += ";ULLONG_MAX=";
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s += std::to_string(max_value(long_long_bit + 1));
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}
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// cstdint / stdint.h
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// FIXME: these are currently hard-coded in std.cfg
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/*
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INTMAX_MIN
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INTMAX_MAX
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UINTMAX_MAX
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INTN_MIN
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INTN_MAX
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UINTN_MAX
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INT_LEASTN_MIN
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INT_LEASTN_MAX
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UINT_LEASTN_MAX
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INT_FASTN_MIN
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INT_FASTN_MAX
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UINT_FASTN_MAX
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INTPTR_MIN
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INTPTR_MAX
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UINTPTR_MAX
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SIZE_MAX
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PTRDIFF_MIN
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PTRDIFF_MAX
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SIG_ATOMIC_MIN
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SIG_ATOMIC_MAX
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WCHAR_MIN
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WCHAR_MAX
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WINT_MIN
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WINT_MAX
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// function-like macros
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// implemented in std.cfg
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INTMAX_C
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UINTMAX_C
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INTN_C
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UINTN_C
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*/
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// cfloat / float.h
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/*
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// TODO: implement
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FLT_RADIX
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FLT_MANT_DIG
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DBL_MANT_DIG
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LDBL_MANT_DIG
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FLT_DIG
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DBL_DIG
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LDBL_DIG
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FLT_MIN_EXP
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DBL_MIN_EXP
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LDBL_MIN_EXP
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FLT_MIN_10_EXP
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DBL_MIN_10_EXP
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LDBL_MIN_10_EXP
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FLT_MAX_EXP
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DBL_MAX_EXP
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LDBL_MAX_EXP
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FLT_MAX_10_EXP
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DBL_MAX_10_EXP
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LDBL_MAX_10_EXP
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FLT_MAX
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DBL_MAX
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LDBL_MAX
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FLT_EPSILON
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DBL_EPSILON
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LDBL_EPSILON
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FLT_MIN
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DBL_MIN
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LDBL_MIN
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FLT_ROUNDS
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// C99 / C++11 only
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FLT_EVAL_METHOD
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DECIMAL_DIG
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*/
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return s;
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}
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std::string Platform::getLimitsDefines(Standards::cstd_t cstd) const
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{
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return getLimitsDefines(cstd >= Standards::cstd_t::C99);
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}
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std::string Platform::getLimitsDefines(Standards::cppstd_t cppstd) const
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{
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return getLimitsDefines(cppstd >= Standards::cppstd_t::CPP11);
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}
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