1/* GDC -- D front-end for GCC 2 Copyright (C) 2013-2021 Free Software Foundation, Inc. 3 4 GCC is free software; you can redistribute it and/or modify it under 5 the terms of the GNU General Public License as published by the Free 6 Software Foundation; either version 3, or (at your option) any later 7 version. 8 9 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with GCC; see the file COPYING3. If not see 16 <http://www.gnu.org/licenses/>. 17*/ 18 19/* This module provides the C main() function supplied by the user's program. */ 20 21module __entrypoint; 22 23extern(C): 24 25/* The D main() function supplied by the user's program 26 27 It always has `_Dmain` symbol name and uses C calling convention. 28 But D frontend returns its type as `extern(D)` because of Issue 9028. 29 As we need to deal with actual calling convention we have to mark it 30 as `extern(C)` and use its symbol name. 31*/ 32 33int _Dmain(char[][] args); 34int _d_run_main(int argc, char **argv, void* mainFunc); 35 36/* Substitutes for the C main() function. Just calls into d_run_main with 37 the default main function. Applications are free to implement their own 38 main function and call the _d_run_main function themselves with any main 39 function. 40*/ 41 42int main(int argc, char **argv) 43{ 44 return _d_run_main(argc, argv, &_Dmain); 45} 46 47/* This is apparently needed on Solaris because the C tool chain seems to 48 expect the main function to be called _main. It needs both not just one! 49*/ 50 51version (Solaris) 52int _main(int argc, char** argv) 53{ 54 return main(argc, argv); 55} 56 57