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76a50749 | 1 | /* Disable specific event for thread. |
7f08f55a | 2 | Copyright (C) 1999,2001,2002,2003 Free Software Foundation, Inc. |
76a50749 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@redhat.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
20 | ||
21 | #include <stddef.h> | |
22 | ||
23 | #include "thread_dbP.h" | |
24 | ||
25 | ||
26 | td_err_e | |
27 | td_thr_clear_event (th, event) | |
28 | const td_thrhandle_t *th; | |
29 | td_thr_events_t *event; | |
30 | { | |
7f08f55a RM |
31 | td_err_e err; |
32 | psaddr_t eventmask; | |
33 | void *copy; | |
34 | ||
76a50749 UD |
35 | LOG ("td_thr_clear_event"); |
36 | ||
7f08f55a RM |
37 | /* Fetch the old event mask from the inferior and modify it in place. */ |
38 | err = DB_GET_FIELD_ADDRESS (eventmask, th->th_ta_p, | |
39 | th->th_unique, pthread, eventbuf_eventmask, 0); | |
40 | if (err == TD_OK) | |
41 | err = DB_GET_STRUCT (copy, th->th_ta_p, eventmask, td_thr_events_t); | |
42 | if (err == TD_OK) | |
43 | { | |
44 | uint32_t idx; | |
45 | for (idx = 0; idx < TD_EVENTSIZE; ++idx) | |
46 | { | |
47 | psaddr_t word; | |
48 | uint32_t mask; | |
49 | err = DB_GET_FIELD_LOCAL (word, th->th_ta_p, copy, | |
50 | td_thr_events_t, event_bits, idx); | |
51 | if (err != TD_OK) | |
52 | break; | |
53 | mask = (uintptr_t) word; | |
54 | mask &= ~event->event_bits[idx]; | |
55 | word = (psaddr_t) (uintptr_t) mask; | |
56 | err = DB_PUT_FIELD_LOCAL (th->th_ta_p, copy, | |
57 | td_thr_events_t, event_bits, idx, word); | |
58 | if (err != TD_OK) | |
59 | break; | |
60 | } | |
61 | if (err == TD_NOAPLIC) | |
62 | { | |
63 | err = TD_OK; | |
64 | while (idx < TD_EVENTSIZE) | |
65 | if (event->event_bits[idx++] != 0) | |
66 | { | |
67 | err = TD_NOEVENT; | |
68 | break; | |
69 | } | |
70 | } | |
71 | if (err == TD_OK) | |
72 | /* Now write it back to the inferior. */ | |
73 | err = DB_PUT_STRUCT (th->th_ta_p, eventmask, td_thr_events_t, copy); | |
74 | } | |
75 | ||
76 | return err; | |
76a50749 | 77 | } |