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