WebSVN – HelenOS – Diff – /SPARTAN/trunk/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>
#include <typedefs.h>
#include <align.h>
 
 
#include <arch/stack.h>
 
 
/*
 * 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)
 
#define PFM_MASK    (~0x3fffffffff)
 
#ifdef context_set
#undef context_set
#endif
 
#define context_set(c, _pc, stack, size)                                \
    (c)->pc = (__address) _pc;                                  \
    (c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), REGISTER_STACK_ALIGNMENT);        \
    (c)->ar_pfs &= PFM_MASK;                                    \
    (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - 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;
    __address bsp;      /* ar_bsp */
    __u64 ar_rnat;
    __u64 ar_lc;
 
    /*
     * General registers
     */
    __u64 r1;
    __u64 r4;
    __u64 r5;
    __u64 r6;
    __u64 r7;
    __address sp;       /* r12 */
    __u64 r13;
   
    /*
     * Branch registers
     */
    __address pc;       /* b0 */
    __u64 b1;
    __u64 b2;
    __u64 b3;
    __u64 b4;
    __u64 b5;
 
    /*
     * Predicate registers
     */
    __u64 pr;
   
    ipl_t ipl;
} __attribute__ ((packed));
 
#endif
 

Rev 415	Rev 443
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	#include <typedefs.h>	33	#include <typedefs.h>
34	#include <align.h>	34	#include <align.h>
35		-
36	#define STACK_ITEM_SIZE 16	-
37	#define STACK_ALIGNMENT 16	35	#include <arch/stack.h>
38	#define REGISTER_STACK_ALIGNMENT 8	-
39		36
40	/*	37	/*
41	* context_save() and context_restore() are both leaf procedures.	38	* context_save() and context_restore() are both leaf procedures.
42	* No need to allocate scratch area.	39	* No need to allocate scratch area.
43	*	40	*
44	* One item is put onto the stack to support get_stack_base().	41	* One item is put onto the stack to support get_stack_base().
45	*/	42	*/
46	#define SP_DELTA (0+STACK_ITEM_SIZE)	43	#define SP_DELTA (0+STACK_ITEM_SIZE)
47		44
48	#define PFM_MASK (~0x3fffffffff)	45	#define PFM_MASK (~0x3fffffffff)
49		46
50	#ifdef context_set	47	#ifdef context_set
51	#undef context_set	48	#undef context_set
52	#endif	49	#endif
53		50
54	#define context_set(c, _pc, stack, size) \	51	#define context_set(c, _pc, stack, size) \
55	(c)->pc = (__address) _pc; \	52	(c)->pc = (__address) _pc; \
56	(c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), REGISTER_STACK_ALIGNMENT); \	53	(c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), REGISTER_STACK_ALIGNMENT); \
57	(c)->ar_pfs &= PFM_MASK; \	54	(c)->ar_pfs &= PFM_MASK; \
58	(c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - SP_DELTA;	55	(c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - SP_DELTA;
59		56
60	/*	57	/*
61	* Only save registers that must be preserved across	58	* Only save registers that must be preserved across
62	* function calls.	59	* function calls.
63	*/	60	*/
64	struct context {	61	struct context {
65		62
66	/*	63	/*
67	* Application registers	64	* Application registers
68	*/	65	*/
69	__u64 ar_pfs;	66	__u64 ar_pfs;
70	__u64 ar_unat_caller;	67	__u64 ar_unat_caller;
71	__u64 ar_unat_callee;	68	__u64 ar_unat_callee;
72	__u64 ar_rsc;	69	__u64 ar_rsc;
73	__address bsp; /* ar_bsp */	70	__address bsp; /* ar_bsp */
74	__u64 ar_rnat;	71	__u64 ar_rnat;
75	__u64 ar_lc;	72	__u64 ar_lc;
76		73
77	/*	74	/*
78	* General registers	75	* General registers
79	*/	76	*/
80	__u64 r1;	77	__u64 r1;
81	__u64 r4;	78	__u64 r4;
82	__u64 r5;	79	__u64 r5;
83	__u64 r6;	80	__u64 r6;
84	__u64 r7;	81	__u64 r7;
85	__address sp; /* r12 */	82	__address sp; /* r12 */
86	__u64 r13;	83	__u64 r13;
87		84
88	/*	85	/*
89	* Branch registers	86	* Branch registers
90	*/	87	*/
91	__address pc; /* b0 */	88	__address pc; /* b0 */
92	__u64 b1;	89	__u64 b1;
93	__u64 b2;	90	__u64 b2;
94	__u64 b3;	91	__u64 b3;
95	__u64 b4;	92	__u64 b4;
96	__u64 b5;	93	__u64 b5;
97		94
98	/*	95	/*
99	* Predicate registers	96	* Predicate registers
100	*/	97	*/
101	__u64 pr;	98	__u64 pr;
102		99
103	ipl_t ipl;	100	ipl_t ipl;
104	} __attribute__ ((packed));	101	} __attribute__ ((packed));
105		102
106	#endif	103	#endif
107		104

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(root)/SPARTAN/trunk/arch/ia64/include/context.h – Rev 415 → 443