passes/cmds/plugin.cc

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2014  Clifford Wolf <clifford@clifford.at>
   5  *
   6  *  Permission to use, copy, modify, and/or distribute this software for any
   7  *  purpose with or without fee is hereby granted, provided that the above
   8  *  copyright notice and this permission notice appear in all copies.
   9  *
  10  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 #include "kernel/yosys.h"
  21
  22 #ifdef YOSYS_ENABLE_PLUGINS
  23 #  include <dlfcn.h>
  24 #endif
  25
  26 #ifdef WITH_PYTHON
  27 #  include <boost/algorithm/string/predicate.hpp>
  28 #  include <Python.h>
  29 #  include <boost/filesystem.hpp>
  30 #endif
  31
  32 YOSYS_NAMESPACE_BEGIN
  33
  34 std::map<std::string, void*> loaded_plugins;
  35 #ifdef WITH_PYTHON
  36 std::map<std::string, void*> loaded_python_plugins;
  37 #endif
  38 std::map<std::string, std::string> loaded_plugin_aliases;
  39
  40 #ifdef YOSYS_ENABLE_PLUGINS
  41 void load_plugin(std::string filename, std::vector<std::string> aliases)
  42 {
  43         std::string orig_filename = filename;
  44
  45         if (filename.find('/') == std::string::npos)
  46                 filename = "./" + filename;
  47
  48         #ifdef WITH_PYTHON
  49         if (!loaded_plugins.count(filename) && !loaded_python_plugins.count(filename)) {
  50         #else
  51         if (!loaded_plugins.count(filename)) {
  52         #endif
  53
  54                 #ifdef WITH_PYTHON
  55
  56                 boost::filesystem::path full_path(filename);
  57
  58                 if(strcmp(full_path.extension().c_str(), ".py") == 0)
  59                 {
  60                         std::string path(full_path.parent_path().c_str());
  61                         filename = full_path.filename().c_str();
  62                         filename = filename.substr(0,filename.size()-3);
  63                         PyRun_SimpleString(("sys.path.insert(0,\""+path+"\")").c_str());
  64                         PyErr_Print();
  65                         PyObject *module_p = PyImport_ImportModule(filename.c_str());
  66                         if(module_p == NULL)
  67                         {
  68                                 PyErr_Print();
  69                                 log_cmd_error("Can't load python module `%s'\n", full_path.filename().c_str());
  70                                 return;
  71                         }
  72                         loaded_python_plugins[orig_filename] = module_p;
  73                         Pass::init_register();
  74                 } else {
  75                 #endif
  76
  77                 void *hdl = dlopen(filename.c_str(), RTLD_LAZY|RTLD_LOCAL);
  78                 if (hdl == NULL && orig_filename.find('/') == std::string::npos)
  79                         hdl = dlopen((proc_share_dirname() + "plugins/" + orig_filename + ".so").c_str(), RTLD_LAZY|RTLD_LOCAL);
  80                 if (hdl == NULL)
  81                         log_cmd_error("Can't load module `%s': %s\n", filename.c_str(), dlerror());
  82                 loaded_plugins[orig_filename] = hdl;
  83                 Pass::init_register();
  84
  85                 #ifdef WITH_PYTHON
  86                 }
  87                 #endif
  88         }
  89
  90         for (auto &alias : aliases)
  91                 loaded_plugin_aliases[alias] = orig_filename;
  92 }
  93 #else
  94 void load_plugin(std::string, std::vector<std::string>)
  95 {
  96         log_error("This version of yosys is built without plugin support.\n");
  97 }
  98 #endif
  99
 100 struct PluginPass : public Pass {
 101         PluginPass() : Pass("plugin", "load and list loaded plugins") { }
 102         void help() YS_OVERRIDE
 103         {
 104                 //   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 105                 log("\n");
 106                 log("    plugin [options]\n");
 107                 log("\n");
 108                 log("Load and list loaded plugins.\n");
 109                 log("\n");
 110                 log("    -i <plugin_filename>\n");
 111                 log("        Load (install) the specified plugin.\n");
 112                 log("\n");
 113                 log("    -a <alias_name>\n");
 114                 log("        Register the specified alias name for the loaded plugin\n");
 115                 log("\n");
 116                 log("    -l\n");
 117                 log("        List loaded plugins\n");
 118                 log("\n");
 119         }
 120         void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
 121         {
 122                 std::string plugin_filename;
 123                 std::vector<std::string> plugin_aliases;
 124                 bool list_mode = false;
 125
 126                 size_t argidx;
 127                 for (argidx = 1; argidx < args.size(); argidx++)
 128                 {
 129                         if ((args[argidx] == "-i") && argidx+1 < args.size() && plugin_filename.empty()) {
 130                                 plugin_filename = args[++argidx];
 131                                 continue;
 132                         }
 133                         if ((args[argidx] == "-a") && argidx+1 < args.size()) {
 134                                 plugin_aliases.push_back(args[++argidx]);
 135                                 continue;
 136                         }
 137                         if (args[argidx] == "-l") {
 138                                 list_mode = true;
 139                                 continue;
 140                         }
 141                         break;
 142                 }
 143                 extra_args(args, argidx, design, false);
 144
 145                 if (!plugin_filename.empty())
 146                         load_plugin(plugin_filename, plugin_aliases);
 147
 148                 if (list_mode)
 149                 {
 150                         log("\n");
 151 #ifdef WITH_PYTHON
 152                         if (loaded_plugins.empty() and loaded_python_plugins.empty())
 153 #else
 154                         if (loaded_plugins.empty())
 155 #endif
 156                                 log("No plugins loaded.\n");
 157                         else
 158                                 log("Loaded plugins:\n");
 159
 160                         for (auto &it : loaded_plugins)
 161                                 log("  %s\n", it.first.c_str());
 162
 163 #ifdef WITH_PYTHON
 164                         for (auto &it : loaded_python_plugins)
 165                                 log("  %s\n", it.first.c_str());
 166 #endif
 167
 168                         if (!loaded_plugin_aliases.empty()) {
 169                                 log("\n");
 170                                 int max_alias_len = 1;
 171                                 for (auto &it : loaded_plugin_aliases)
 172                                         max_alias_len = max(max_alias_len, GetSize(it.first));
 173                                 for (auto &it : loaded_plugin_aliases)
 174                                         log("Alias: %-*s %s\n", max_alias_len, it.first.c_str(), it.second.c_str());
 175                         }
 176                 }
 177         }
 178 } PluginPass;
 179
 180 YOSYS_NAMESPACE_END
 181