WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia64/include/context.h


/*
 * Copyright (C) 2005 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 __ia64_CONTEXT_H__
#define __ia64_CONTEXT_H__
 
#include <arch/types.h>
 
#define STACK_ITEM_SIZE 16
 
/*
 * context_save() and context_restore() are both leaf procedures.
 * No need to allocate scratch area.
 *
 * One item is put onto the stack to support get_stack_base().
 */
#define SP_DELTA    (0+STACK_ITEM_SIZE)
 
#ifdef context_set
#undef context_set
#endif
 
#define context_set(c, _pc, stack, size)            \
    (c)->pc = (__address) _pc;              \
    (c)->bsp = ((__address) stack) + (sizeof(the_t));   \
    (c)->sp = ((__address) stack) + (size) - SP_DELTA;
 
/*
 * Only save registers that must be preserved across
 * function calls.
 */
struct context {
 
    /*
     * Application registers
     */
    __u64 ar_pfs;
    __u64 ar_unat_caller;
    __u64 ar_unat_callee;
    __u64 ar_rsc;
    __u64 bsp;  /* ar_bsp */
    __u64 ar_rnat;
    __u64 ar_lc;
 
    /*
     * General registers
     */
    __u64 r1;
    __u64 r4;
    __u64 r5;
    __u64 r6;
    __u64 r7;
    __u64 sp;       /* r12 */
    __u64 r13;
   
    /*
     * Branch registers
     */
    __u64 pc;       /* b0 */
    __u64 b1;
    __u64 b2;
    __u64 b3;
    __u64 b4;
    __u64 b5;
 
    /*
     * Predicate registers
     */
    __u64 pr;
   
    pri_t pri;
} __attribute__ ((packed));
 
#endif
 

Rev 322	Rev 354
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 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 __ia64_CONTEXT_H__	29	#ifndef __ia64_CONTEXT_H__
30	#define __ia64_CONTEXT_H__	30	#define __ia64_CONTEXT_H__
31		31
32	#include <arch/types.h>	32	#include <arch/types.h>
33		33
34	#define STACK_ITEM_SIZE 16	34	#define STACK_ITEM_SIZE 16
35		35
36	/*	36	/*
37	* context_save() and context_restore() are both leaf procedures.	37	* context_save() and context_restore() are both leaf procedures.
38	* No need to allocate scratch area.	38	* No need to allocate scratch area.
39	*	39	*
40	* One item is put onto the stack to support get_stack_base().	40	* One item is put onto the stack to support get_stack_base().
41	*/	41	*/
42	#define SP_DELTA (0+STACK_ITEM_SIZE)	42	#define SP_DELTA (0+STACK_ITEM_SIZE)
43		43
44	#ifdef context_set	44	#ifdef context_set
45	#undef context_set	45	#undef context_set
46	#endif	46	#endif
47		47
48	#define context_set(c, _pc, stack, size) \	48	#define context_set(c, _pc, stack, size) \
49	(c)->pc = (__address) _pc; \	49	(c)->pc = (__address) _pc; \
50	(c)->bsp = ((__address) stack) + (sizeof(the_t)); \	50	(c)->bsp = ((__address) stack) + (sizeof(the_t)); \
51	(c)->sp = ((__address) stack) + (size) - SP_DELTA;	51	(c)->sp = ((__address) stack) + (size) - SP_DELTA;
52		52
-		53	/*
-		54	* Only save registers that must be preserved across
-		55	* function calls.
-		56	*/
53	struct context {	57	struct context {
54		58
55	/*	59	/*
56	* Application registers	60	* Application registers
57	*/	61	*/
58	__u64 ar_pfs;	62	__u64 ar_pfs;
59	__u64 ar_unat_caller;	63	__u64 ar_unat_caller;
60	__u64 ar_unat_callee;	64	__u64 ar_unat_callee;
61	__u64 ar_rsc;	65	__u64 ar_rsc;
62	__u64 bsp; /* ar_bsp */	66	__u64 bsp; /* ar_bsp */
63	__u64 ar_rnat;	67	__u64 ar_rnat;
64	__u64 ar_lc;	68	__u64 ar_lc;
65		69
66	/*	70	/*
67	* General registers	71	* General registers
68	*/	72	*/
69	__u64 r1;	73	__u64 r1;
70	__u64 r4;	74	__u64 r4;
71	__u64 r5;	75	__u64 r5;
72	__u64 r6;	76	__u64 r6;
73	__u64 r7;	77	__u64 r7;
74	__u64 sp; /* r12 */	78	__u64 sp; /* r12 */
75	__u64 r13;	79	__u64 r13;
76		80
77	/*	81	/*
78	* Branch registers	82	* Branch registers
79	*/	83	*/
80	__u64 pc; /* b0 */	84	__u64 pc; /* b0 */
81	__u64 b1;	85	__u64 b1;
82	__u64 b2;	86	__u64 b2;
83	__u64 b3;	87	__u64 b3;
84	__u64 b4;	88	__u64 b4;
85	__u64 b5;	89	__u64 b5;
86		90
87	/*	91	/*
88	* Predicate registers	92	* Predicate registers
89	*/	93	*/
90	__u64 pr;	94	__u64 pr;
91		95
92	pri_t pri;	96	pri_t pri;
93	} __attribute__ ((packed));	97	} __attribute__ ((packed));
94		98
95	#endif	99	#endif
96		100

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia64/include/context.h @ 2071 – Rev 322 → 354