92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
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/*
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* Copyright (c) 2000 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined(WINNT) && !defined(macintosh)
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#ident "$Id: t-dll.cc,v 1.1 2000/08/12 16:34:37 steve Exp $"
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#endif
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# include "target.h"
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# include "ivl_target.h"
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# include <dlfcn.h>
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struct ivl_design_s {
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const Design*des_;
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};
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/*
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* The DLL target type loads a named object file to handle the process
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* of scanning the netlist. When it is time to start the design, I
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* locate and link in the desired DLL, then start calling methods. The
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* DLL will call me back to get information out of the netlist in
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* particular.
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*/
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struct dll_target : public target_t {
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bool start_design(const Design*);
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void end_design(const Design*);
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void*dll_;
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struct ivl_design_s ivl_des;
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start_design_f start_design_;
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end_design_f end_design_;
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} dll_target_obj;
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bool dll_target::start_design(const Design*des)
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{
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dll_ = dlopen(des->get_flag("DLL").c_str(), RTLD_NOW);
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if (dll_ == 0) {
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cerr << des->get_flag("DLL") << ": " << dlerror() << endl;
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return false;
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}
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ivl_des.des_ = des;
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start_design_ = (start_design_f)dlsym(dll_, "target_start_design");
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end_design_ = (end_design_f) dlsym(dll_, "target_end_design");
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(start_design_)(&ivl_des);
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return true;
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}
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void dll_target::end_design(const Design*)
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{
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(end_design_)(&ivl_des);
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dlclose(dll_);
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}
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extern const struct target tgt_dll = { "dll", &dll_target_obj };
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/* THE FOLLOWING ARE FUNCTIONS THAT ARE CALLED FROM THE TARGET. */
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extern "C" const char*ivl_get_flag(ivl_design_t des, const char*key)
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{
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return des->des_->get_flag(key).c_str();
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}
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/*
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* $Log: t-dll.cc,v $
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* Revision 1.1 2000/08/12 16:34:37 steve
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* Start stub for loadable targets.
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*
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*/
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