WebSVN – HelenOS – Diff – /trunk/kernel/generic/include/arch.h


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef __ARCH_H__
#define __ARCH_H__
 
#include <arch/types.h>
#include <typedefs.h>
 
#include <cpu.h>
#include <arch/cpu.h>
#include <arch/asm.h> 
 
#include <proc/thread.h>
#include <proc/task.h>
 
 
 
 
 
 
 
 
#define CPU     THE->cpu
#define THREAD      THE->thread
#define TASK        THE->task
 
/*
 * For each possible kernel stack, structure
 * of the following type will be placed at
 * the bottom of the stack.
 */
struct the {
    int preemption_disabled;
    thread_t *thread;       /* current thread */
    task_t *task;           /* current task */
    cpu_t *cpu;         /* executing cpu */
};
 
#define THE     ((the_t *)(get_stack_base()))   
 
extern void the_initialize(the_t *the);
extern void the_copy(the_t *src, the_t *dst);
 
extern void arch_pre_mm_init(void);
extern void arch_post_mm_init(void);
extern void arch_late_init(void);
extern void calibrate_delay_loop(void);
 
extern pri_t cpu_priority_high(void);
extern pri_t cpu_priority_low(void);
extern void cpu_priority_restore(pri_t pri);
extern pri_t cpu_priority_read(void);
 
#endif
 

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/arch.h @ 3894 – Rev 184 → 192

Rev 184		Rev 192
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#ifndef __ARCH_H__	29	#ifndef __ARCH_H__
30	#define __ARCH_H__	30	#define __ARCH_H__
31		31
32	#include <arch/types.h>	32	#include <arch/types.h>
33	#include <typedefs.h>	33	#include <typedefs.h>
34		34
35	#include <cpu.h>	35	#include <cpu.h>
36	#include <arch/cpu.h>	36	#include <arch/cpu.h>
37	#include <arch/asm.h>	37	#include <arch/asm.h>
38		38
39	#include <proc/thread.h>	39	#include <proc/thread.h>
40	#include <proc/task.h>	40	#include <proc/task.h>
41		41
42	/*	-
43	* NOTE:	-
44	* CPU, THREAD and TASK are not preemption-safe.	-
45	* Provisions must be made to prevent preemption prior	-
46	* to using these macros. Simple cpu_priority_high()	-
47	* call will suffice.	-
48	*/	-
49	#define CPU (&cpus[CPU_ID_ARCH])	42	#define CPU THE->cpu
50	#define THREAD (cpu_private_data[CPU_ID_ARCH].thread)	43	#define THREAD THE->thread
51	#define TASK (cpu_private_data[CPU_ID_ARCH].task)	44	#define TASK THE->task
52		45
53	/*	46	/*
54	* For each possible kernel stack, structure	47	* For each possible kernel stack, structure
55	* of the following type will be placed at	48	* of the following type will be placed at
56	* the bottom of the stack.	49	* the bottom of the stack.
57	*/	50	*/
58	struct the {	51	struct the {
59	int preemption_disabled;	52	int preemption_disabled;
60	thread_t thread; / current thread */	53	thread_t thread; / current thread */
61	task_t task; / current task */	54	task_t task; / current task */
62	cpu_t cpu; / executing cpu */	55	cpu_t cpu; / executing cpu */
63	};	56	};
64		57
65	#define THE ((the_t *)(get_stack_base()))	58	#define THE ((the_t *)(get_stack_base()))
66		59
67	extern void the_initialize(the_t *the);	60	extern void the_initialize(the_t *the);
68	extern void the_copy(the_t src, the_t dst);	61	extern void the_copy(the_t src, the_t dst);
69		62
70	extern void arch_pre_mm_init(void);	63	extern void arch_pre_mm_init(void);
71	extern void arch_post_mm_init(void);	64	extern void arch_post_mm_init(void);
72	extern void arch_late_init(void);	65	extern void arch_late_init(void);
73	extern void calibrate_delay_loop(void);	66	extern void calibrate_delay_loop(void);
74		67
75	extern pri_t cpu_priority_high(void);	68	extern pri_t cpu_priority_high(void);
76	extern pri_t cpu_priority_low(void);	69	extern pri_t cpu_priority_low(void);
77	extern void cpu_priority_restore(pri_t pri);	70	extern void cpu_priority_restore(pri_t pri);
78	extern pri_t cpu_priority_read(void);	71	extern pri_t cpu_priority_read(void);
79		72
80	#endif	73	#endif
81		74