WebSVN – HelenOS – Diff – /trunk/kernel/arch/sparc64/src/proc/thread.c


/*
 * Copyright (C) 2006 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.
 */
 
/** @addtogroup sparc64proc
 * @{
 */
/** @file
 */
 
#include <proc/thread.h>
#include <arch/proc/thread.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <arch/mm/page.h>
#include <align.h>
 
void thr_constructor_arch(thread_t *t)
{
    /*
     * Allocate memory for uspace_window_buffer.
     */
    t->arch.uspace_window_buffer = NULL;
}
 
void thr_destructor_arch(thread_t *t)
{
    if (t->arch.uspace_window_buffer) {
        /*
         * Mind the possible alignment of the userspace window buffer
         * belonging to a killed thread.
         */
        frame_free(KA2PA(ALIGN_DOWN((uintptr_t)
            t->arch.uspace_window_buffer, PAGE_SIZE)));
    }
}
 
void thread_create_arch(thread_t *t)
{
    if ((t->flags & THREAD_FLAG_USPACE) && (!t->arch.uspace_window_buffer))
        {
        /*
         * The thread needs userspace window buffer and the object
         * returned from the slab allocator doesn't have any.
         */
        t->arch.uspace_window_buffer = frame_alloc(ONE_FRAME, FRAME_KA);
    } else {
        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
 
        /*
         * Mind the possible alignment of the userspace window buffer
         * belonging to a killed thread.
         */
         t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf,
            PAGE_SIZE);
    }
}
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/sparc64/src/proc/thread.c @ 2071 – Rev 1987 → 2049

Rev 1987		Rev 2049
1	/*	1	/*
2	* Copyright (C) 2006 Jakub Jermar	2	* Copyright (C) 2006 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	/** @addtogroup sparc64proc	29	/** @addtogroup sparc64proc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <proc/thread.h>	35	#include <proc/thread.h>
36	#include <arch/proc/thread.h>	36	#include <arch/proc/thread.h>
37	#include <mm/frame.h>	37	#include <mm/frame.h>
38	#include <mm/page.h>	38	#include <mm/page.h>
39	#include <arch/mm/page.h>	39	#include <arch/mm/page.h>
40	#include <align.h>	40	#include <align.h>
41		41
42	void thr_constructor_arch(thread_t *t)	42	void thr_constructor_arch(thread_t *t)
43	{	43	{
44	/*	44	/*
45	* Allocate memory for uspace_window_buffer.	45	* Allocate memory for uspace_window_buffer.
46	*/	46	*/
47	t->arch.uspace_window_buffer = NULL;	47	t->arch.uspace_window_buffer = NULL;
48	}	48	}
49		49
50	void thr_destructor_arch(thread_t *t)	50	void thr_destructor_arch(thread_t *t)
51	{	51	{
52	if (t->arch.uspace_window_buffer) {	52	if (t->arch.uspace_window_buffer) {
53	/*	53	/*
54	* Mind the possible alignment of the userspace window buffer	54	* Mind the possible alignment of the userspace window buffer
55	* belonging to a killed thread.	55	* belonging to a killed thread.
56	*/	56	*/
-		57	frame_free(KA2PA(ALIGN_DOWN((uintptr_t)
57	frame_free(KA2PA(ALIGN_DOWN((uintptr_t) t->arch.uspace_window_buffer, PAGE_SIZE)));	58	t->arch.uspace_window_buffer, PAGE_SIZE)));
58	}	59	}
59	}	60	}
60		61
61	void thread_create_arch(thread_t *t)	62	void thread_create_arch(thread_t *t)
62	{	63	{
63	if ((t->flags & THREAD_FLAG_USPACE) && (!t->arch.uspace_window_buffer)) {	64	if ((t->flags & THREAD_FLAG_USPACE) && (!t->arch.uspace_window_buffer))
-		65	{
64	/*	66	/*
65	* The thread needs userspace window buffer and the object	67	* The thread needs userspace window buffer and the object
66	* returned from the slab allocator doesn't have any.	68	* returned from the slab allocator doesn't have any.
67	*/	69	*/
68	t->arch.uspace_window_buffer = frame_alloc(ONE_FRAME, FRAME_KA);	70	t->arch.uspace_window_buffer = frame_alloc(ONE_FRAME, FRAME_KA);
69	} else {	71	} else {
70	uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;	72	uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
71		73
72	/*	74	/*
73	* Mind the possible alignment of the userspace window buffer	75	* Mind the possible alignment of the userspace window buffer
74	* belonging to a killed thread.	76	* belonging to a killed thread.
75	*/	77	*/
76	t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf, PAGE_SIZE);	78	t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf,
-		79	PAGE_SIZE);
77	}	80	}
78	}	81	}
79		82
80	/** @}	83	/** @}
81	*/	84	*/
82		85