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| Rev | Author | Line No. | Line |
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| 2938 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2008 Jiri Svoboda |
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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 | /** @addtogroup debug |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 35 | #include <stdlib.h> |
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| 36 | #include <libadt/list.h> |
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| 2939 | svoboda | 37 | #include <assert.h> |
| 38 | #include <futex.h> |
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| 39 | #include <async.h> |
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| 2938 | svoboda | 40 | |
| 2940 | svoboda | 41 | #include "include/arch.h" |
| 42 | #include "main.h" |
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| 2938 | svoboda | 43 | #include "dthread.h" |
| 44 | |||
| 45 | static int last_thread_id = 0; |
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| 46 | |||
| 47 | link_t dthreads; /* List of application's threads */ |
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| 48 | dthread_t *cwt; /* Current working thread */ |
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| 49 | |||
| 50 | dthread_t *dthread_new(thash_t hash) |
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| 51 | { |
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| 52 | dthread_t *dt; |
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| 53 | |||
| 54 | dt = malloc(sizeof(dthread_t)); |
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| 55 | if (!dt) { |
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| 56 | exit(1); |
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| 57 | } |
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| 58 | |||
| 59 | dt->id = ++last_thread_id; |
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| 60 | dt->hash = hash; |
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| 2939 | svoboda | 61 | dt->fid = 0; |
| 62 | dt->stopped = 0; |
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| 2938 | svoboda | 63 | |
| 3100 | svoboda | 64 | arch_dthread_initialize(dt); |
| 65 | |||
| 2938 | svoboda | 66 | if (!cwt) cwt = dt; |
| 67 | |||
| 68 | list_append(&dt->link, &dthreads); |
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| 69 | |||
| 70 | return dt; |
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| 71 | } |
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| 72 | |||
| 73 | void dthread_delete(dthread_t *dt) |
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| 74 | { |
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| 75 | list_remove(&dt->link); |
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| 76 | free(dt); |
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| 77 | } |
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| 78 | |||
| 2939 | svoboda | 79 | /* |
| 80 | * Get dthread struct serviced by fibril fid. |
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| 81 | */ |
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| 82 | dthread_t *dthread_get_by_fid(fid_t fid) |
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| 83 | { |
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| 84 | link_t *cur; |
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| 85 | dthread_t *dt; |
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| 2938 | svoboda | 86 | |
| 2939 | svoboda | 87 | dt = NULL; |
| 88 | for (cur = dthreads.next; cur != &dthreads; cur = cur->next) { |
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| 89 | dt = list_get_instance(cur, dthread_t, link); |
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| 90 | if (dt->fid == fid) return dt; |
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| 91 | } |
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| 92 | |||
| 93 | return NULL; |
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| 94 | } |
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| 95 | |||
| 96 | /* |
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| 97 | * Get dthread struct for dthread serviced by the current fibril. |
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| 98 | */ |
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| 99 | dthread_t *dthread_get(void) |
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| 100 | { |
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| 101 | return dthread_get_by_fid(fibril_get_id()); |
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| 102 | } |
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| 103 | |||
| 104 | void dthread_stop_me(void) |
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| 105 | { |
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| 106 | dthread_t *dt; |
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| 107 | |||
| 108 | dt = dthread_get(); |
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| 109 | assert(dt); |
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| 110 | |||
| 111 | futex_down(&async_futex); |
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| 112 | |||
| 113 | dt->stopped = 1; |
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| 114 | fibril_switch(FIBRIL_TO_MANAGER); |
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| 115 | |||
| 116 | futex_up(&async_futex); |
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| 117 | } |
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| 118 | |||
| 119 | void dthread_resume(dthread_t *dt) |
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| 120 | { |
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| 121 | if (!dt->stopped) return; |
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| 122 | |||
| 123 | futex_down(&async_futex); |
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| 124 | |||
| 125 | fibril_add_ready(dt->fid); |
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| 126 | dt->stopped = 0; |
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| 127 | |||
| 128 | futex_up(&async_futex); |
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| 129 | } |
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| 130 | |||
| 2940 | svoboda | 131 | unsigned dthread_get_pc(dthread_t *dt) |
| 132 | { |
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| 2941 | svoboda | 133 | static istate_t istate; |
| 2940 | svoboda | 134 | int rc; |
| 2939 | svoboda | 135 | |
| 2941 | svoboda | 136 | rc = udebug_regs_read(app_phone, dt->hash, &istate); |
| 2940 | svoboda | 137 | if (rc < 0) { |
| 138 | printf("failed reading registers (%d)\n", rc); |
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| 139 | return 0; |
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| 140 | } |
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| 141 | |||
| 2941 | svoboda | 142 | return istate_get_pc(&istate); |
| 2940 | svoboda | 143 | } |
| 144 | |||
| 2938 | svoboda | 145 | /** @} |
| 146 | */ |