| /* |
| * Copyright (c) 2016 Wind River Systems, Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /* this file is only meant to be included by kernel_structs.h */ |
| |
| #ifndef _kernel_arch_func__h_ |
| #define _kernel_arch_func__h_ |
| |
| #ifndef _ASMLANGUAGE |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* stack alignment related macros: STACK_ALIGN_SIZE is defined above */ |
| |
| #define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE) |
| #define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE) |
| |
| extern K_THREAD_STACK_DEFINE(_interrupt_stack, CONFIG_ISR_STACK_SIZE); |
| |
| /** |
| * |
| * @brief Performs architecture-specific initialization |
| * |
| * This routine performs architecture-specific initialization of the kernel. |
| * Trivial stuff is done inline; more complex initialization is done via |
| * function calls. |
| * |
| * @return N/A |
| */ |
| static inline void kernel_arch_init(void) |
| { |
| _kernel.nested = 0; |
| _kernel.irq_stack = K_THREAD_STACK_BUFFER(_interrupt_stack) + |
| CONFIG_ISR_STACK_SIZE; |
| #if CONFIG_X86_STACK_PROTECTION |
| _x86_mmu_set_flags(_interrupt_stack, MMU_PAGE_SIZE, |
| MMU_ENTRY_NOT_PRESENT, MMU_PTE_P_MASK); |
| #endif |
| } |
| |
| /** |
| * |
| * @brief Set the return value for the specified fiber (inline) |
| * |
| * @param fiber pointer to fiber |
| * @param value value to set as return value |
| * |
| * The register used to store the return value from a function call invocation |
| * is set to <value>. It is assumed that the specified <fiber> is pending, and |
| * thus the fibers context is stored in its TCS. |
| * |
| * @return N/A |
| */ |
| static ALWAYS_INLINE void |
| _set_thread_return_value(struct k_thread *thread, unsigned int value) |
| { |
| /* write into 'eax' slot created in _Swap() entry */ |
| |
| *(unsigned int *)(thread->callee_saved.esp) = value; |
| } |
| |
| extern void k_cpu_atomic_idle(unsigned int imask); |
| |
| extern void _MsrWrite(unsigned int msr, u64_t msrData); |
| extern u64_t _MsrRead(unsigned int msr); |
| |
| /* |
| * _IntLibInit() is called from the non-arch specific function, |
| * prepare_multithreading(). The IA-32 kernel does not require any special |
| * initialization of the interrupt subsystem. However, we still need to |
| * provide an _IntLibInit() of some sort to prevent build errors. |
| */ |
| static inline void _IntLibInit(void) |
| { |
| } |
| |
| /* the _idt_base_address symbol is generated via a linker script */ |
| extern unsigned char _idt_base_address[]; |
| |
| extern FUNC_NORETURN void _x86_userspace_enter(k_thread_entry_t user_entry, |
| void *p1, void *p2, void *p3, |
| u32_t stack_end, |
| u32_t stack_start); |
| |
| #include <stddef.h> /* For size_t */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #define _is_in_isr() (_kernel.nested != 0) |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* _kernel_arch_func__h_ */ |