57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017-2019 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License.
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*
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* Jehanne 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 Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <libc.h>
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extern void **_privates;
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extern int _nprivates;
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static void call_main(int argc, char *argv[]) __attribute__((noreturn));
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/* can be overwritten to do anything before calling main */
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extern void __libc_init(int argc, char *argv[]) __attribute__((weak, noreturn));
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void
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__jehanne_libc_init(int argc, char *argv[])
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{
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/* Initialize per process structures on the stack */
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void *privates[NPRIVATES];
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_nprivates = NPRIVATES;
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for(_nprivates = 0; _nprivates < NPRIVATES; ++_nprivates)
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privates[_nprivates] = nil;
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_privates = privates;
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if(__libc_init != nil)
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__libc_init(argc, argv);
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call_main(argc, argv);
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}
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static void
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call_main(int argc, char *argv[])
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{
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extern void main(int argc, char *argv[]) __attribute__((weak));
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if(main != nil){
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main(argc, argv);
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jehanne_exits("main");
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} else {
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jehanne_exits("missing main");
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}
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}
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