5b9378ab7e
Used by ARC, ARM, Nios II. x86 has alternate code done in assembly. Linker scripts had some alarming comments about data/BSS overlap, but the beginning of BSS is aligned so this can't happen even if the end of data isn't. The common code doesn't use fake pointer values for the number of words in these sections, don't compute or export them. Change-Id: I4291c2a6d0222d0a3e95c140deae7539ebab3cc3 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
143 lines
3.8 KiB
C
143 lines
3.8 KiB
C
/*
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* Copyright (c) 2010-2012, 2014-2015 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Architecture-independent private nanokernel APIs
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*
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* This file contains private nanokernel APIs that are not
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* architecture-specific.
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*/
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#ifndef _NANO_INTERNAL__H_
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#define _NANO_INTERNAL__H_
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#ifndef _ASMLANGUAGE
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <nanokernel.h>
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/* Early boot functions */
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void _bss_zero(void);
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#ifdef CONFIG_XIP
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void _data_copy(void);
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#else
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static inline void _data_copy(void)
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{
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/* Do nothing */
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}
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#endif
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FUNC_NORETURN void _Cstart(void);
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/* helper type alias for thread control structure */
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typedef struct tcs tTCS;
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/* thread entry point declarations */
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typedef void *_thread_arg_t;
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typedef void (*_thread_entry_t)(_thread_arg_t arg1,
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_thread_arg_t arg2,
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_thread_arg_t arg3);
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extern void _thread_entry(_thread_entry_t,
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_thread_arg_t,
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_thread_arg_t,
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_thread_arg_t);
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extern void _new_thread(char *pStack, unsigned stackSize,
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void *uk_task_ptr, _thread_entry_t pEntry,
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_thread_arg_t arg1, _thread_arg_t arg2,
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_thread_arg_t arg3,
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int prio, unsigned options);
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/* context switching and scheduling-related routines */
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extern void _nano_fiber_ready(struct tcs *tcs);
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extern void _nano_fiber_swap(void);
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extern unsigned int _Swap(unsigned int);
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/* set and clear essential fiber/task flag */
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extern void _thread_essential_set(void);
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extern void _thread_essential_clear(void);
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/* clean up when a thread is aborted */
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#if defined(CONFIG_THREAD_MONITOR)
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extern void _thread_exit(struct tcs *tcs);
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#else
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#define _thread_exit(tcs) \
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do {/* nothing */ \
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} while (0)
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#endif /* CONFIG_THREAD_MONITOR */
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/* special nanokernel object APIs */
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struct nano_lifo;
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extern void *_nano_fiber_lifo_get_panic(struct nano_lifo *lifo);
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#ifdef CONFIG_MICROKERNEL
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extern void _task_nop(void);
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extern void _nano_nop(void);
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extern int _nano_unpend_tasks(struct _nano_queue *queue);
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extern void _nano_task_ready(void *ptr);
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extern void _nano_timer_task_ready(void *task);
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#define _TASK_PENDQ_INIT(queue) _nano_wait_q_init(queue)
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#define _NANO_UNPEND_TASKS(queue) \
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do { \
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if (_nano_unpend_tasks(queue) != 0) { \
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_nano_nop(); \
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} \
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} while (0)
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#define _TASK_NANO_UNPEND_TASKS(queue) \
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do { \
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if (_nano_unpend_tasks(queue) != 0) { \
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_task_nop(); \
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} \
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} while (0)
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#define _NANO_TASK_READY(tcs) _nano_task_ready(tcs->uk_task_ptr)
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#define _NANO_TIMER_TASK_READY(tcs) _nano_timer_task_ready(tcs->uk_task_ptr)
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#define _IS_MICROKERNEL_TASK(tcs) ((tcs)->uk_task_ptr != NULL)
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#define _IS_IDLE_TASK() \
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(task_priority_get() == (CONFIG_NUM_TASK_PRIORITIES - 1))
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#else
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#define _TASK_PENDQ_INIT(queue) do { } while (0)
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#define _NANO_UNPEND_TASKS(queue) do { } while (0)
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#define _TASK_NANO_UNPEND_TASKS(queue) do { } while (0)
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#define _NANO_TASK_READY(tcs) do { } while (0)
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#define _NANO_TIMER_TASK_READY(tcs) do { } while (0)
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#define _IS_MICROKERNEL_TASK(tcs) (0)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASMLANGUAGE */
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#endif /* _NANO_INTERNAL__H_ */
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