Subversion Repositories HelenOS

Rev

Rev 1787 | 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 
/*
2 
 * Copyright (C) 2005 Jakub 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>
414 jermar 40 
#include <typedefs.h>
402 jermar 41 
#include <align.h>
443 jermar 42 
#include <arch/stack.h>
35 jermar 43 
 
82 jermar 44 
/*
1138 jermar 45 
 * context_save_arch() and context_restore_arch() are both leaf procedures.
82 jermar 46 
 * No need to allocate scratch area.
180 jermar 47 
 *
48 
 * One item is put onto the stack to support get_stack_base().
82 jermar 49 
 */
564 jermar 50 
#define SP_DELTA    (0+ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
81 jermar 51 
 
97 jermar 52 
#ifdef context_set
53 
#undef context_set
54 
#endif
55 
 
1138 jermar 56 
/* RSE stack starts at the bottom of memory stack. */
57 
#define context_set(c, _pc, stack, size)                                \
58 
    do {                                                \
1780 jermar 59 
        (c)->pc = (uintptr_t) _pc;                              \
60 
        (c)->bsp = ((uintptr_t) stack) + ALIGN_UP((size), REGISTER_STACK_ALIGNMENT);        \
1138 jermar 61 
        (c)->ar_pfs &= PFM_MASK;                                \
1780 jermar 62 
        (c)->sp = ((uintptr_t) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - SP_DELTA;       \
1138 jermar 63 
    } while (0);
97 jermar 64 
 
354 jermar 65 
/*
66 
 * Only save registers that must be preserved across
67 
 * function calls.
68 
 */
35 jermar 69 
struct context {
83 jermar 70 
 
82 jermar 71 
    /*
94 jermar 72 
     * Application registers
73 
     */
1780 jermar 74 
    uint64_t ar_pfs;
75 
    uint64_t ar_unat_caller;
76 
    uint64_t ar_unat_callee;
77 
    uint64_t ar_rsc;
78 
    uintptr_t bsp;      /* ar_bsp */
79 
    uint64_t ar_rnat;
80 
    uint64_t ar_lc;
94 jermar 81 
 
82 
    /*
82 jermar 83 
     * General registers
84 
     */
1780 jermar 85 
    uint64_t r1;
86 
    uint64_t r4;
87 
    uint64_t r5;
88 
    uint64_t r6;
89 
    uint64_t r7;
90 
    uintptr_t sp;       /* r12 */
91 
    uint64_t r13;
82 jermar 92 
 
93 
    /*
94 
     * Branch registers
95 
     */
1780 jermar 96 
    uintptr_t pc;       /* b0 */
97 
    uint64_t b1;
98 
    uint64_t b2;
99 
    uint64_t b3;
100 
    uint64_t b4;
101 
    uint64_t b5;
82 jermar 102 
 
103 
    /*
104 
     * Predicate registers
105 
     */
1780 jermar 106 
    uint64_t pr;
1053 vana 107 
 
108 
    __r128 f2 __attribute__ ((aligned(16)));
109 
    __r128 f3;
110 
    __r128 f4;
111 
    __r128 f5;
112 
 
113 
    __r128 f16;
114 
    __r128 f17;
115 
    __r128 f18;
116 
    __r128 f19;
117 
    __r128 f20;
118 
    __r128 f21;
119 
    __r128 f22;
120 
    __r128 f23;
121 
    __r128 f24;
122 
    __r128 f25;
123 
    __r128 f26;
124 
    __r128 f27;
125 
    __r128 f28;
126 
    __r128 f29;
127 
    __r128 f30;
128 
    __r128 f31;
82 jermar 129 
 
413 jermar 130 
    ipl_t ipl;
993 jermar 131 
};
35 jermar 132 
 
133 
#endif
1702 cejka 134 
 
1888 jermar 135 
/** @}
1702 cejka 136 
 */