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c906108c | 1 | /* Simulator watchpoint support. |
e2882c85 | 2 | Copyright (C) 1997-2018 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
c906108c SS |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
19 | |
20 | ||
21 | #ifndef SIM_WATCH_H | |
22 | #define SIM_WATCH_H | |
23 | ||
24 | typedef enum { | |
25 | invalid_watchpoint = -1, | |
26 | pc_watchpoint, | |
27 | clock_watchpoint, | |
28 | cycles_watchpoint, | |
29 | nr_watchpoint_types, | |
30 | } watchpoint_type; | |
31 | ||
32 | typedef struct _sim_watch_point sim_watch_point; | |
33 | struct _sim_watch_point { | |
34 | int ident; | |
35 | watchpoint_type type; | |
36 | int interrupt_nr; /* == nr_interrupts -> breakpoint */ | |
37 | int is_periodic; | |
38 | int is_within; | |
39 | unsigned long arg0; | |
40 | unsigned long arg1; | |
41 | sim_event *event; | |
42 | sim_watch_point *next; | |
43 | }; | |
44 | ||
45 | ||
46 | typedef struct _sim_watchpoints { | |
47 | ||
48 | /* Pointer into the host's data structures specifying the | |
49 | address/size of the program-counter */ | |
50 | /* FIXME: In the future this shall be generalized so that any of the | |
51 | N processors M registers can be watched */ | |
52 | void *pc; | |
53 | int sizeof_pc; | |
54 | ||
55 | /* Pointer to the handler for interrupt watchpoints */ | |
56 | /* FIXME: can this be done better? */ | |
57 | /* NOTE: For the DATA arg, the handler is passed a (char**) pointer | |
58 | that is an offset into the INTERRUPT_NAMES vector. Use | |
59 | arithmetic to determine the interrupt-nr. */ | |
60 | sim_event_handler *interrupt_handler; | |
61 | ||
62 | /* Pointer to a null terminated list of interrupt names */ | |
63 | /* FIXME: can this be done better? Look at the PPC's interrupt | |
64 | mechanism and table for a rough idea of where it will go next */ | |
65 | int nr_interrupts; | |
ff398ee4 | 66 | const char **interrupt_names; |
c906108c SS |
67 | |
68 | /* active watchpoints */ | |
69 | int last_point_nr; | |
70 | sim_watch_point *points; | |
71 | ||
72 | } sim_watchpoints; | |
73 | ||
74 | /* Watch install handler. */ | |
75 | MODULE_INSTALL_FN sim_watchpoint_install; | |
76 | ||
77 | #endif /* SIM_WATCH_H */ |