mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-10 13:46:17 +00:00
507852a4ad
Historically, stacks were just character buffers and could be treated as such if the user wanted to look inside the stack data, and also declared as an array of the desired stack size. This is no longer the case. Certain architectures will create a memory region much larger to account for MPU/MMU guard pages. Unfortunately, the kernel interfaces treat both the declared stack, and the valid stack buffer within it as the same char * data type, even though these absolutely cannot be used interchangeably. We introduce an opaque k_thread_stack_t which gets instantiated by K_THREAD_STACK_DECLARE(), this is no longer treated by the compiler as a character pointer, even though it really is. To access the real stack buffer within, the result of K_THREAD_STACK_BUFFER() can be used, which will return a char * type. This should catch a bunch of programming mistakes at build time: - Declaring a character array outside of K_THREAD_STACK_DECLARE() and passing it to K_THREAD_CREATE - Directly examining the stack created by K_THREAD_STACK_DECLARE() which is not actually the memory desired and may trigger a CPU exception Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief Private kernel definitions
|
|
*
|
|
* This file contains private kernel function/macro definitions and various
|
|
* other definitions for the RISCV32 processor architecture.
|
|
*/
|
|
|
|
#ifndef _kernel_arch_func__h_
|
|
#define _kernel_arch_func__h_
|
|
|
|
#include <soc.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef _ASMLANGUAGE
|
|
void k_cpu_idle(void);
|
|
void k_cpu_atomic_idle(unsigned int key);
|
|
|
|
static ALWAYS_INLINE void kernel_arch_init(void)
|
|
{
|
|
_kernel.irq_stack =
|
|
K_THREAD_STACK_BUFFER(_interrupt_stack) + CONFIG_ISR_STACK_SIZE;
|
|
}
|
|
|
|
static ALWAYS_INLINE void
|
|
_set_thread_return_value(struct k_thread *thread, unsigned int value)
|
|
{
|
|
thread->arch.swap_return_value = value;
|
|
}
|
|
|
|
static inline void _IntLibInit(void)
|
|
{
|
|
#if defined(CONFIG_RISCV_SOC_INTERRUPT_INIT)
|
|
soc_interrupt_init();
|
|
#endif
|
|
}
|
|
|
|
FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason,
|
|
const NANO_ESF *esf);
|
|
|
|
|
|
#define _is_in_isr() (_kernel.nested != 0)
|
|
|
|
#ifdef CONFIG_IRQ_OFFLOAD
|
|
int _irq_do_offload(void);
|
|
#endif
|
|
|
|
#endif /* _ASMLANGUAGE */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _kernel_arch_func__h_ */
|