Subversion Repositories HelenOS

Rev

Rev 2083 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
35 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Jakub Jermar
35 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1888 jermar 29
/** @addtogroup ia64   
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1888 jermar 35
#ifndef KERN_ia64_CONTEXT_H_
36
#define KERN_ia64_CONTEXT_H_
35 jermar 37
 
38
#include <arch/types.h>
919 jermar 39
#include <arch/register.h>
402 jermar 40
#include <align.h>
443 jermar 41
#include <arch/stack.h>
35 jermar 42
 
82 jermar 43
/*
1138 jermar 44
 * context_save_arch() and context_restore_arch() are both leaf procedures.
82 jermar 45
 * No need to allocate scratch area.
180 jermar 46
 *
47
 * One item is put onto the stack to support get_stack_base().
82 jermar 48
 */
2089 decky 49
#define SP_DELTA    (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
81 jermar 50
 
97 jermar 51
#ifdef context_set
52
#undef context_set
53
#endif
54
 
1138 jermar 55
/* RSE stack starts at the bottom of memory stack. */
56
#define context_set(c, _pc, stack, size)                                \
57
    do {                                                \
1780 jermar 58
        (c)->pc = (uintptr_t) _pc;                              \
59
        (c)->bsp = ((uintptr_t) stack) + ALIGN_UP((size), REGISTER_STACK_ALIGNMENT);        \
1138 jermar 60
        (c)->ar_pfs &= PFM_MASK;                                \
1780 jermar 61
        (c)->sp = ((uintptr_t) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - SP_DELTA;       \
1138 jermar 62
    } while (0);
97 jermar 63
 
354 jermar 64
/*
65
 * Only save registers that must be preserved across
66
 * function calls.
67
 */
2083 decky 68
typedef struct {
83 jermar 69
 
82 jermar 70
    /*
94 jermar 71
     * Application registers
72
     */
1780 jermar 73
    uint64_t ar_pfs;
74
    uint64_t ar_unat_caller;
75
    uint64_t ar_unat_callee;
76
    uint64_t ar_rsc;
77
    uintptr_t bsp;      /* ar_bsp */
78
    uint64_t ar_rnat;
79
    uint64_t ar_lc;
94 jermar 80
 
81
    /*
82 jermar 82
     * General registers
83
     */
1780 jermar 84
    uint64_t r1;
85
    uint64_t r4;
86
    uint64_t r5;
87
    uint64_t r6;
88
    uint64_t r7;
89
    uintptr_t sp;       /* r12 */
90
    uint64_t r13;
82 jermar 91
 
92
    /*
93
     * Branch registers
94
     */
1780 jermar 95
    uintptr_t pc;       /* b0 */
96
    uint64_t b1;
97
    uint64_t b2;
98
    uint64_t b3;
99
    uint64_t b4;
100
    uint64_t b5;
82 jermar 101
 
102
    /*
103
     * Predicate registers
104
     */
1780 jermar 105
    uint64_t pr;
1053 vana 106
 
2089 decky 107
    uint128_t f2 __attribute__ ((aligned(16)));
108
    uint128_t f3;
109
    uint128_t f4;
110
    uint128_t f5;
1053 vana 111
 
2089 decky 112
    uint128_t f16;
113
    uint128_t f17;
114
    uint128_t f18;
115
    uint128_t f19;
116
    uint128_t f20;
117
    uint128_t f21;
118
    uint128_t f22;
119
    uint128_t f23;
120
    uint128_t f24;
121
    uint128_t f25;
122
    uint128_t f26;
123
    uint128_t f27;
124
    uint128_t f28;
125
    uint128_t f29;
126
    uint128_t f30;
127
    uint128_t f31;
82 jermar 128
 
413 jermar 129
    ipl_t ipl;
2083 decky 130
} context_t;
35 jermar 131
 
132
#endif
1702 cejka 133
 
1888 jermar 134
/** @}
1702 cejka 135
 */