zephyr/kernel/init_static.c

88 lines
1.9 KiB
C

/*
* Copyright (c) 2012-2015 Wind River Systems, Inc.
* Copyright (c) 2021 Synopsys, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
void __do_global_ctors_aux(void);
void __do_init_array_aux(void);
void z_init_static(void)
{
#if defined(CONFIG_STATIC_INIT_GNU)
__do_global_ctors_aux();
__do_init_array_aux();
#elif defined(__CCAC__) /* ARC MWDT */
__do_global_ctors_aux();
#endif
}
/**
* @section - Constructor module
* @brief
* The ctors section contains a list of function pointers that execute both the C++ constructors of
* static global objects, as well as either C or C++ initializer functions (declared with the
* attribute constructor). These must be executed before the application's main() routine.
*
* NOTE: Not all compilers put those function pointers into the ctors section;
* some put them into the init_array section instead.
*/
#ifdef CONFIG_STATIC_INIT_GNU
/* What a constructor function pointer looks like */
typedef void (*CtorFuncPtr)(void);
/* Constructor function pointer list is generated by the linker script. */
extern CtorFuncPtr __ZEPHYR_CTOR_LIST__[];
extern CtorFuncPtr __ZEPHYR_CTOR_END__[];
/**
*
* @brief Invoke all C++ style global object constructors
*
* This routine is invoked by the kernel prior to the execution of the
* application's main().
*/
void __do_global_ctors_aux(void)
{
unsigned int nCtors;
nCtors = (unsigned long)__ZEPHYR_CTOR_LIST__[0];
while (nCtors >= 1U) {
__ZEPHYR_CTOR_LIST__[nCtors--]();
}
}
#endif
/*
* @section
* @brief Execute initialization routines referenced in .init_array section
*/
#ifdef CONFIG_STATIC_INIT_GNU
typedef void (*func_ptr)(void);
extern func_ptr __zephyr_init_array_start[];
extern func_ptr __zephyr_init_array_end[];
/**
* @brief Execute initialization routines referenced in .init_array section
*/
void __do_init_array_aux(void)
{
for (func_ptr *func = __zephyr_init_array_start;
func < __zephyr_init_array_end;
func++) {
(*func)();
}
}
#endif