| 1 | /* Simulator watchpoint support. |
| 2 | Copyright (C) 1997, 2007, 2008, 2009, 2010, 2011 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Cygnus Support. |
| 5 | |
| 6 | This file is part of GDB, the GNU debugger. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | |
| 22 | #ifndef SIM_WATCH_H |
| 23 | #define SIM_WATCH_H |
| 24 | |
| 25 | typedef enum { |
| 26 | invalid_watchpoint = -1, |
| 27 | pc_watchpoint, |
| 28 | clock_watchpoint, |
| 29 | cycles_watchpoint, |
| 30 | nr_watchpoint_types, |
| 31 | } watchpoint_type; |
| 32 | |
| 33 | typedef struct _sim_watch_point sim_watch_point; |
| 34 | struct _sim_watch_point { |
| 35 | int ident; |
| 36 | watchpoint_type type; |
| 37 | int interrupt_nr; /* == nr_interrupts -> breakpoint */ |
| 38 | int is_periodic; |
| 39 | int is_within; |
| 40 | unsigned long arg0; |
| 41 | unsigned long arg1; |
| 42 | sim_event *event; |
| 43 | sim_watch_point *next; |
| 44 | }; |
| 45 | |
| 46 | |
| 47 | typedef struct _sim_watchpoints { |
| 48 | |
| 49 | /* Pointer into the host's data structures specifying the |
| 50 | address/size of the program-counter */ |
| 51 | /* FIXME: In the future this shall be generalized so that any of the |
| 52 | N processors M registers can be watched */ |
| 53 | void *pc; |
| 54 | int sizeof_pc; |
| 55 | |
| 56 | /* Pointer to the handler for interrupt watchpoints */ |
| 57 | /* FIXME: can this be done better? */ |
| 58 | /* NOTE: For the DATA arg, the handler is passed a (char**) pointer |
| 59 | that is an offset into the INTERRUPT_NAMES vector. Use |
| 60 | arithmetic to determine the interrupt-nr. */ |
| 61 | sim_event_handler *interrupt_handler; |
| 62 | |
| 63 | /* Pointer to a null terminated list of interrupt names */ |
| 64 | /* FIXME: can this be done better? Look at the PPC's interrupt |
| 65 | mechanism and table for a rough idea of where it will go next */ |
| 66 | int nr_interrupts; |
| 67 | const char **interrupt_names; |
| 68 | |
| 69 | /* active watchpoints */ |
| 70 | int last_point_nr; |
| 71 | sim_watch_point *points; |
| 72 | |
| 73 | } sim_watchpoints; |
| 74 | |
| 75 | /* Watch install handler. */ |
| 76 | MODULE_INSTALL_FN sim_watchpoint_install; |
| 77 | |
| 78 | #endif /* SIM_WATCH_H */ |