| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * @brief Private nanokernel definitions |
| * |
| * This file contains private nanokernel structures definitions and various |
| * other definitions for the Nios II processor architecture. |
| * |
| * This file is also included by assembly language files which must #define |
| * _ASMLANGUAGE before including this header file. Note that nanokernel |
| * assembly source files obtains structure offset values via "absolute |
| * symbols" in the offsets.o module. |
| */ |
| |
| #ifndef _NANO_PRIVATE_H |
| #define _NANO_PRIVATE_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <toolchain.h> |
| #include <sections.h> |
| #include <arch/cpu.h> |
| |
| #ifndef _ASMLANGUAGE |
| #include <nanokernel.h> /* public nanokernel API */ |
| #include <../../../kernel/nanokernel/include/nano_internal.h> |
| #include <stdint.h> |
| #include <misc/util.h> |
| #include <misc/dlist.h> |
| #endif |
| |
| /* Bitmask definitions for the struct tcs->flags bit field */ |
| #define FIBER 0x000 |
| #define TASK 0x001 /* 1 = task, 0 = fiber */ |
| |
| #define INT_ACTIVE 0x002 /* 1 = execution context is interrupt handler */ |
| #define EXC_ACTIVE 0x004 /* 1 = executino context is exception handler */ |
| #define USE_FP 0x010 /* 1 = thread uses floating point unit */ |
| #define PREEMPTIBLE 0x020 /* 1 = preemptible thread */ |
| #define ESSENTIAL 0x200 /* 1 = system thread that must not abort */ |
| #define NO_METRICS 0x400 /* 1 = _Swap() not to update task metrics */ |
| |
| /* stacks */ |
| |
| #define STACK_ALIGN_SIZE 4 |
| |
| #define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE) |
| #define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE) |
| |
| #ifndef _ASMLANGUAGE |
| |
| struct irq_stack_frame { |
| int stub; |
| }; |
| |
| typedef struct irq_stack_frame tISF; |
| |
| struct callee_saved { |
| int stub; |
| }; |
| |
| typedef struct callee_saved tCalleeSaved; |
| |
| struct coop { |
| int stub; |
| }; |
| |
| struct preempt { |
| int stub; |
| }; |
| |
| struct tcs { |
| struct tcs *link; /* node in singly-linked list |
| * _nanokernel.fibers |
| */ |
| uint32_t flags; /* bitmask of flags above */ |
| int prio; /* fiber priority, -1 for a task */ |
| struct coop coopReg; |
| struct preempt preempReg; |
| #ifdef CONFIG_ERRNO |
| int errno_var; |
| #endif |
| #ifdef CONFIG_NANO_TIMEOUTS |
| struct _nano_timeout nano_timeout; |
| #endif |
| #if defined(CONFIG_THREAD_MONITOR) |
| struct __thread_entry *entry; /* thread entry and parameters description */ |
| struct tcs *next_thread; /* next item in list of ALL fiber+tasks */ |
| #endif |
| }; |
| |
| struct s_NANO { |
| struct tcs *fiber; /* singly linked list of runnable fibers */ |
| struct tcs *task; /* current task the nanokernel knows about */ |
| struct tcs *current; /* currently scheduled thread (fiber or task) */ |
| |
| #if defined(CONFIG_NANO_TIMEOUTS) || defined(CONFIG_NANO_TIMERS) |
| sys_dlist_t timeout_q; |
| int32_t task_timeout; |
| #endif |
| #if defined(CONFIG_THREAD_MONITOR) |
| struct tcs *threads; /* singly linked list of ALL fiber+tasks */ |
| #endif |
| }; |
| |
| typedef struct s_NANO tNANO; |
| extern tNANO _nanokernel; |
| |
| |
| /* Arch-specific nanokernel APIs */ |
| void nano_cpu_idle(void); |
| void nano_cpu_atomic_idle(unsigned int key); |
| |
| static ALWAYS_INLINE void nanoArchInit(void) |
| { |
| /* STUB */ |
| } |
| |
| static ALWAYS_INLINE void fiberRtnValueSet(struct tcs *fiber, |
| unsigned int value) |
| { |
| ARG_UNUSED(fiber); |
| ARG_UNUSED(value); |
| /* STUB */ |
| } |
| |
| static inline void _IntLibInit(void) |
| { |
| /* STUB ... possibly nothing to do here though */ |
| } |
| |
| FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason, |
| const NANO_ESF *esf); |
| |
| |
| static ALWAYS_INLINE int _IS_IN_ISR(void) |
| { |
| /* STUB */ |
| return 0; |
| } |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* _NANO_PRIVATE_H */ |
| |