mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-21 15:48:59 +00:00
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <malloc.h>
|
|
#include <sys/iosupport.h>
|
|
#include "stage2.h"
|
|
#include "utils.h"
|
|
|
|
void __libc_init_array(void);
|
|
void __libc_fini_array(void);
|
|
|
|
extern uint8_t __bss_start__[], __bss_end__[];
|
|
extern uint8_t __heap_start__[], __heap_end__[];
|
|
|
|
extern char *fake_heap_start;
|
|
extern char *fake_heap_end;
|
|
|
|
int __program_argc;
|
|
void **__program_argv;
|
|
|
|
void __program_exit(int rc);
|
|
static void __program_parse_argc_argv(int argc, char *argdata);
|
|
static void __program_cleanup_argv(void);
|
|
|
|
static void __program_init_heap(void) {
|
|
fake_heap_start = (char*)__heap_start__;
|
|
fake_heap_end = (char*)__heap_end__;
|
|
}
|
|
|
|
static void __program_init_newlib_hooks(void) {
|
|
__syscalls.exit = __program_exit; /* For exit, etc. */
|
|
}
|
|
|
|
void __program_init(int argc, char *argdata) {
|
|
/* Zero-fill the .bss section */
|
|
memset(__bss_start__, 0, __bss_end__ - __bss_start__);
|
|
|
|
__program_init_heap();
|
|
__program_init_newlib_hooks();
|
|
__program_parse_argc_argv(argc, argdata);
|
|
__libc_init_array();
|
|
}
|
|
|
|
void __program_exit(int rc) {
|
|
__libc_fini_array();
|
|
__program_cleanup_argv();
|
|
}
|
|
|
|
static void __program_parse_argc_argv(int argc, char *argdata) {
|
|
__program_argc = argc;
|
|
|
|
__program_argv = malloc(argc * sizeof(void **));
|
|
if (__program_argv == NULL) {
|
|
generic_panic();
|
|
}
|
|
|
|
__program_argv[0] = malloc(sizeof(stage2_mtc_args_t));
|
|
if (__program_argv[0] == NULL) {
|
|
generic_panic();
|
|
}
|
|
memcpy(__program_argv[0], argdata, sizeof(stage2_mtc_args_t));
|
|
}
|
|
|
|
static void __program_cleanup_argv(void) {
|
|
for (int i = 0; i < __program_argc; i++) {
|
|
free(__program_argv[i]);
|
|
__program_argv[i] = NULL;
|
|
}
|
|
free(__program_argv);
|
|
}
|