bouffalo_sdk/components/libc/newlib/port_init_fini.c
2023-02-24 21:33:36 +08:00

54 lines
1.2 KiB
C

#include <sys/types.h>
/* These magic symbols are provided by the linker. */
extern void (*__preinit_array_start[])(void) __attribute__((weak));
extern void (*__preinit_array_end[])(void) __attribute__((weak));
extern void (*__init_array_start[])(void) __attribute__((weak));
extern void (*__init_array_end[])(void) __attribute__((weak));
extern void (*__fini_array_start[])(void) __attribute__((weak));
extern void (*__fini_array_end[])(void) __attribute__((weak));
extern void _init(void);
extern void _fini(void);
__attribute__((weak)) void _init(void)
{
}
__attribute__((weak)) void _fini(void)
{
}
/* Iterate over all the init routines. */
void __libc_init_array(void)
{
size_t count;
size_t i;
count = __preinit_array_end - __preinit_array_start;
for (i = 0; i < count; i++) {
__preinit_array_start[i]();
}
_init();
count = __init_array_end - __init_array_start;
for (i = 0; i < count; i++) {
__init_array_start[i]();
}
}
/* Run all the cleanup routines. */
void __libc_fini_array(void)
{
size_t count;
size_t i;
count = __fini_array_end - __fini_array_start;
for (i = count; i > 0; i--) {
__fini_array_start[i - 1]();
}
_fini();
}