| 1 | /*
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| 2 | * Copyright (c) 2001-2004 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup generic
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef KERN_ARCH_H_
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| 36 | #define KERN_ARCH_H_
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| 37 |
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| 38 | #include <arch/arch.h>
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| 39 | #include <proc/thread.h>
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| 40 | #include <proc/task.h>
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| 41 | #include <mm/as.h>
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| 42 |
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| 43 | #define DEFAULT_CONTEXT 0
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| 44 |
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| 45 | #define CPU THE->cpu
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| 46 | #define THREAD THE->thread
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| 47 | #define TASK THE->task
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| 48 | #define AS THE->as
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| 49 | #define CONTEXT (THE->task ? THE->task->context : DEFAULT_CONTEXT)
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| 50 | #define PREEMPTION_DISABLED THE->preemption_disabled
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| 51 |
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| 52 | #define context_check(ctx1, ctx2) ((ctx1) == (ctx2))
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| 53 |
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| 54 | /**
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| 55 | * For each possible kernel stack, structure
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| 56 | * of the following type will be placed at
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| 57 | * the base address of the stack.
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| 58 | */
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| 59 | typedef struct {
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| 60 | size_t preemption_disabled; /**< Preemption disabled counter. */
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| 61 | thread_t *thread; /**< Current thread. */
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| 62 | task_t *task; /**< Current task. */
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| 63 | cpu_t *cpu; /**< Executing cpu. */
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| 64 | as_t *as; /**< Current address space. */
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| 65 | } the_t;
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| 66 |
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| 67 | /*
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| 68 | * THE is not an abbreviation, but the English definite article written in
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| 69 | * capital letters. It means the current pointer to something, e.g. thread,
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| 70 | * processor or address space. Kind reader of this comment shall appreciate
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| 71 | * the wit of constructs like THE->thread and similar.
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| 72 | */
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| 73 | #define THE ((the_t * )(get_stack_base()))
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| 74 |
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| 75 | extern void the_initialize(the_t *);
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| 76 | extern void the_copy(the_t *, the_t *);
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| 77 |
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| 78 | extern void arch_pre_mm_init(void);
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| 79 | extern void arch_post_mm_init(void);
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| 80 | extern void arch_post_cpu_init(void);
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| 81 | extern void arch_pre_smp_init(void);
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| 82 | extern void arch_post_smp_init(void);
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| 83 |
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| 84 | extern void calibrate_delay_loop(void);
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| 85 |
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| 86 | extern void reboot(void);
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| 87 | extern void arch_reboot(void);
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| 88 | extern void *arch_construct_function(fncptr_t *, void *, void *);
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| 89 |
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| 90 | #endif
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| 91 |
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| 92 | /** @}
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| 93 | */
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