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/*
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 * Copyright (c) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup generic
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_ARCH_H_
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#define KERN_ARCH_H_
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#include <arch/arch.h>
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#include <proc/thread.h>
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#include <proc/task.h>
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#define DEFAULT_CONTEXT     0
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#define CPU         THE->cpu
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#define THREAD          THE->thread
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#define TASK            THE->task
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#define AS          THE->as
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#define CONTEXT     (THE->task ? THE->task->context : DEFAULT_CONTEXT)
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#define PREEMPTION_DISABLED THE->preemption_disabled
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#define context_check(ctx1, ctx2)   ((ctx1) == (ctx2))
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/**
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 * For each possible kernel stack, structure
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 * of the following type will be placed at
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 * the base address of the stack.
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 */
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typedef struct {
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    size_t preemption_disabled; /**< Preemption disabled counter. */
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    thread_t *thread;       /**< Current thread. */
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    task_t *task;           /**< Current task. */
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    cpu_t *cpu;         /**< Executing cpu. */
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    as_t *as;           /**< Current address space. */
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} the_t;
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#define THE  ((the_t * )(get_stack_base()))
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extern void the_initialize(the_t *the);
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extern void the_copy(the_t *src, the_t *dst);
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extern void arch_pre_mm_init(void);
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extern void arch_post_mm_init(void);
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extern void arch_post_cpu_init(void);
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extern void arch_pre_smp_init(void);
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extern void arch_post_smp_init(void);
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extern void calibrate_delay_loop(void);
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extern void reboot(void);
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extern void arch_reboot(void);
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extern void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller);
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#endif
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/** @}
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 */