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Diffstat (limited to 'linkers/rld-resolver.cpp')
| -rw-r--r-- | linkers/rld-resolver.cpp | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/linkers/rld-resolver.cpp b/linkers/rld-resolver.cpp deleted file mode 100644 index d2a9f1e..0000000 --- a/linkers/rld-resolver.cpp +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright (c) 2011, Chris Johns <chrisj@rtems.org> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ -/** - * @file - * - * @ingroup rtems_ld - * - * @brief RTEMS Linker. - * - */ - -#if HAVE_CONFIG_H -#include "config.h" -#endif - -#include <iomanip> -#include <iostream> - -#include <sys/stat.h> - -#include <rld.h> -#include <rld.h> - -namespace rld -{ - namespace resolver - { - static files::object* - get_object (files::cache& cache, - const std::string& fullname) - { - files::objects& objects = cache.get_objects (); - files::objects::iterator oi = objects.find (fullname); - if (oi == objects.end ()) - return 0; - return (*oi).second; - } - - static void - resolve_symbols (files::object_list& dependents, - files::cache& cache, - symbols::table& base_symbols, - symbols::table& symbols, - symbols::symtab& unresolved, - const std::string& fullname) - { - const std::string name = path::basename (fullname); - - static int nesting = 0; - - ++nesting; - - /* - * Find each unresolved symbol in the symbol table pointing the - * unresolved symbol's object file to the file that resolves the - * symbol. Record each object file that is found and when all unresolved - * symbols in this object file have been found iterate over the found - * object files resolving them. The 'urs' is the unresolved symbol and - * 'es' is the exported symbol. - */ - - files::object* object = get_object (cache, fullname); - - if (object) - { - if (object->resolved () || object->resolving ()) - { - if (rld::verbose () >= RLD_VERBOSE_INFO) - std::cout << "resolver:resolving: " - << std::setw (nesting - 1) << ' ' - << name - << " is resolved or resolving" - << std::endl; - return; - } - object->resolve_set (); - } - - if (rld::verbose () >= RLD_VERBOSE_INFO) - std::cout << "resolver:resolving: " - << std::setw (nesting - 1) << ' ' - << name - << ", unresolved: " - << unresolved.size () - << std::endl; - - files::object_list objects; - - for (symbols::symtab::iterator ursi = unresolved.begin (); - ursi != unresolved.end (); - ++ursi) - { - symbols::symbol& urs = *((*ursi).second); - - if ((urs.binding () != STB_WEAK) && urs.object ()) - continue; - - symbols::symbol* es = base_symbols.find_external (urs.name ()); - bool base = true; - - if (rld::verbose () >= RLD_VERBOSE_INFO) - { - std::cout << "resolver:resolve : " - << std::setw (nesting + 1) << ' ' - << " |- " << urs.name () << std::endl; - } - - if (!es) - { - es = symbols.find_external (urs.name ()); - if (!es) - { - es = symbols.find_weak (urs.name ()); - if (!es) - throw rld::error ("symbol not found: " + urs.name (), name); - } - base = false; - } - - symbols::symbol& esym = *es; - - if (rld::verbose () >= RLD_VERBOSE_INFO) - { - std::cout << "resolver:resolved : " - << std::setw (nesting + 1) << ' ' - << " | `--> "; - if (esym.object()) - { - std::cout << esym.object()->name ().basename (); - if (esym.object()->resolving ()) - std::cout << " (resolving)"; - else if (esym.object()->resolved ()) - std::cout << " (resolved)"; - else if (base) - std::cout << " (base)"; - else - std::cout << " (unresolved: " << objects.size () + 1 << ')'; - } - else - std::cout << "null"; - std::cout << std::endl; - } - - if (!base) - { - files::object& eobj = *esym.object (); - urs.set_object (eobj); - if (!eobj.resolved () && !eobj.resolving ()) - { - objects.push_back (&eobj); - objects.unique (); - } - } - - esym.referenced (); - } - - if (object) - { - object->resolve_clear (); - object->resolved_set (); - } - - /* - * Recurse into any references object files. - */ - - if (rld::verbose () >= RLD_VERBOSE_INFO) - std::cout << "resolver:resolved : " - << std::setw (nesting + 1) << ' ' - << " +-- referenced objects: " << objects.size () - << std::endl; - - for (files::object_list::iterator oli = objects.begin (); - oli != objects.end (); - ++oli) - { - files::object& obj = *(*oli); - if (rld::verbose () >= RLD_VERBOSE_INFO) - std::cout << "resolver:resolving: " - << std::setw (nesting) << ' ' - << "] " << name << " ==> " - << obj.name ().basename () << std::endl; - resolve_symbols (dependents, cache, base_symbols, symbols, - obj.unresolved_symbols (), - obj.name ().full ()); - } - - --nesting; - - dependents.merge (objects); - dependents.unique (); - } - - void - resolve (files::object_list& dependents, - files::cache& cache, - symbols::table& base_symbols, - symbols::table& symbols, - symbols::symtab& undefined) - { - files::object_list objects; - cache.get_objects (objects); - - /* - * First resolve any undefined symbols that are forced by the linker or - * the user. - */ - resolver::resolve_symbols (dependents, cache, base_symbols, symbols, - undefined, "undefines"); - - /* - * Resolve the symbols in the object files. - */ - for (files::object_list::iterator oi = objects.begin (); - oi != objects.end (); - ++oi) - { - files::object& object = *(*oi); - if (rld::verbose () >= RLD_VERBOSE_INFO) - std::cout << "resolver:resolving: top: " - << object.name ().basename () << std::endl; - resolver::resolve_symbols (dependents, cache, base_symbols, symbols, - object.unresolved_symbols (), - object.name ().full ()); - } - } - } - -} |