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35 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #ifndef __ia64_CONTEXT_H__ |
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30 | #define __ia64_CONTEXT_H__ |
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31 | |||
32 | #include <arch/types.h> |
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33 | |||
82 | jermar | 34 | /* |
35 | * context_save() and context_restore() are both leaf procedures. |
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36 | * No need to allocate scratch area. |
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37 | */ |
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38 | #define SP_DELTA 0 |
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81 | jermar | 39 | |
97 | jermar | 40 | #ifdef context_set |
41 | #undef context_set |
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42 | #endif |
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43 | |||
44 | #define context_set(c, _pc, stack, size) \ |
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45 | (c)->pc = (__address) _pc; \ |
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46 | (c)->bsp = (__address) stack; \ |
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47 | (c)->sp = ((__address) stack) + (size) - SP_DELTA; |
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48 | |||
35 | jermar | 49 | struct context { |
83 | jermar | 50 | |
82 | jermar | 51 | /* |
94 | jermar | 52 | * Application registers |
53 | */ |
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54 | __u64 ar_pfs; |
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55 | __u64 ar_unat_caller; |
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56 | __u64 ar_unat_callee; |
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57 | __u64 ar_rsc; |
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97 | jermar | 58 | __u64 bsp; /* ar_bsp */ |
94 | jermar | 59 | __u64 ar_rnat; |
60 | __u64 ar_lc; |
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61 | __u64 ar_ec; |
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62 | __u64 ar_ccv; |
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63 | __u64 ar_csd; |
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64 | __u64 ar_ssd; |
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65 | |||
66 | /* |
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82 | jermar | 67 | * General registers |
68 | */ |
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59 | jermar | 69 | __u64 r1; |
70 | __u64 r2; |
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71 | __u64 r3; |
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72 | __u64 r4; |
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73 | __u64 r5; |
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74 | __u64 r6; |
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75 | __u64 r7; |
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76 | __u64 r8; |
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77 | __u64 r9; |
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78 | __u64 r10; |
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79 | __u64 r11; |
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80 | __u64 sp; /* r12 */ |
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81 | __u64 r13; |
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82 | __u64 r14; |
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83 | __u64 r15; |
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84 | __u64 r16; |
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85 | __u64 r17; |
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86 | __u64 r18; |
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87 | __u64 r19; |
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88 | __u64 r20; |
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89 | __u64 r21; |
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90 | __u64 r22; |
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91 | __u64 r23; |
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92 | __u64 r24; |
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93 | __u64 r25; |
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94 | __u64 r26; |
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95 | __u64 r27; |
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96 | __u64 r28; |
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97 | __u64 r29; |
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98 | __u64 r30; |
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99 | __u64 r31; |
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82 | jermar | 100 | |
101 | /* |
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102 | * Branch registers |
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103 | */ |
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59 | jermar | 104 | __u64 pc; /* b0 */ |
82 | jermar | 105 | __u64 b1; |
106 | __u64 b2; |
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107 | __u64 b3; |
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108 | __u64 b4; |
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109 | __u64 b5; |
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110 | __u64 b6; |
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111 | __u64 b7; |
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112 | |||
113 | /* |
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114 | * Predicate registers |
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115 | */ |
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116 | __u64 pr; |
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117 | |||
35 | jermar | 118 | pri_t pri; |
59 | jermar | 119 | } __attribute__ ((packed)); |
35 | jermar | 120 | |
121 | #endif |