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

Subversion Repositories HelenOS

(root)/SPARTAN/trunk/arch/ia64/include/context.h @ 443 – Rev 414 → 415