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/*
* wnix, a Unix-like operating system for WebAssembly applications.
* Copyright (C) 2025 Xavier Del Campo Romero
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
void _start(void)
{
/* clang mangles main if argc/argv are present:
* https://reviews.llvm.org/D127888 */
int __main_argc_argv(int, char *[]);
int __wnix_argc(void) __attribute__((
__import_module__("wnix"),
__import_name__("argc")
));
_Noreturn void __wnix_exit(int) __attribute__((
__import_module__("wnix"),
__import_name__("exit")
));
if (!(__stdin = fopen("/dev/stdin", "rb"))
|| !(__stdout = fopen("/dev/stdout", "wb"))
|| !(__stderr = fopen("/dev/stderr", "wb")))
__wnix_exit(EXIT_FAILURE);
const int argc = __wnix_argc();
char **argv = malloc((argc + 1) * sizeof *argv);
if (!argv)
__wnix_exit(EXIT_FAILURE);
for (int i = 0; i < argc; i++)
{
size_t __wnix_arglen(int) __attribute__((
__import_module__("wnix"),
__import_name__("arglen")
));
int __wnix_argcopy(int, char *, int *) __attribute__((
__import_module__("wnix"),
__import_name__("argcopy")
));
char *const arg = malloc(__wnix_arglen(i));
if (!arg)
__wnix_exit(EXIT_FAILURE);
__wnix_argcopy(i, arg, &errno);
argv[i] = arg;
}
argv[argc] = NULL;
__wnix_exit(__main_argc_argv(argc, argv));
}
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