| // target-select.cc -- select a target for an object file |
| |
| // Copyright 2006, 2007, 2008 Free Software Foundation, Inc. |
| // Written by Ian Lance Taylor <iant@google.com>. |
| |
| // This file is part of gold. |
| |
| // This program is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 3 of the License, or |
| // (at your option) any later version. |
| |
| // This program is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this program; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| // MA 02110-1301, USA. |
| |
| #include "gold.h" |
| |
| #include <cstring> |
| |
| #include "elfcpp.h" |
| #include "target-select.h" |
| |
| namespace |
| { |
| |
| // The start of the list of target selectors. |
| |
| gold::Target_selector* target_selectors; |
| |
| } // End anonymous namespace. |
| |
| namespace gold |
| { |
| |
| // Construct a Target_selector, which means adding it to the linked |
| // list. This runs at global constructor time, so we want it to be |
| // fast. |
| |
| Target_selector::Target_selector(int machine, int size, bool is_big_endian, |
| const char* bfd_name) |
| : machine_(machine), size_(size), is_big_endian_(is_big_endian), |
| bfd_name_(bfd_name), instantiated_target_(NULL) |
| |
| { |
| this->next_ = target_selectors; |
| target_selectors = this; |
| } |
| |
| // Find the target for an ELF file. |
| |
| Target* |
| select_target(int machine, int size, bool is_big_endian, int osabi, |
| int abiversion) |
| { |
| for (Target_selector* p = target_selectors; p != NULL; p = p->next()) |
| { |
| int pmach = p->machine(); |
| if ((pmach == machine || pmach == elfcpp::EM_NONE) |
| && p->get_size() == size |
| && (p->is_big_endian() ? is_big_endian : !is_big_endian)) |
| { |
| Target* ret = p->recognize(machine, osabi, abiversion); |
| if (ret != NULL) |
| return ret; |
| } |
| } |
| return NULL; |
| } |
| |
| // Find a target using a BFD name. This is used to support the |
| // --oformat option. |
| |
| Target* |
| select_target_by_name(const char* name) |
| { |
| for (Target_selector* p = target_selectors; p != NULL; p = p->next()) |
| { |
| const char* pname = p->bfd_name(); |
| if (pname == NULL || strcmp(pname, name) == 0) |
| { |
| Target* ret = p->recognize_by_name(name); |
| if (ret != NULL) |
| return ret; |
| } |
| } |
| return NULL; |
| } |
| |
| // Push all the supported BFD names onto a vector. |
| |
| void |
| supported_target_names(std::vector<const char*>* names) |
| { |
| for (Target_selector* p = target_selectors; p != NULL; p = p->next()) |
| p->supported_names(names); |
| } |
| |
| } // End namespace gold. |