/* Simulator watchpoint support. Copyright (C) 1997 Free Software Foundation, Inc. Contributed by Cygnus Support. This file is part of GDB, the GNU debugger. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef SIM_WATCH_H #define SIM_WATCH_H typedef enum { invalid_watchpoint = -1, pc_watchpoint, clock_watchpoint, cycles_watchpoint, nr_watchpoint_types, } watchpoint_type; typedef struct _sim_watch_point sim_watch_point; struct _sim_watch_point { int ident; watchpoint_type type; int interrupt_nr; /* == nr_interrupts -> breakpoint */ int is_periodic; int is_within; unsigned long arg0; unsigned long arg1; sim_event *event; sim_watch_point *next; }; typedef struct _sim_watchpoints { /* Pointer into the host's data structures specifying the address/size of the program-counter */ /* FIXME: In the future this shall be generalized so that any of the N processors M registers can be watched */ void *pc; int sizeof_pc; /* Pointer to the handler for interrupt watchpoints */ /* FIXME: can this be done better? */ /* NOTE: For the DATA arg, the handler is passed a (char**) pointer that is an offset into the INTERRUPT_NAMES vector. Use arithmetic to determine the interrupt-nr. */ sim_event_handler *interrupt_handler; /* Pointer to a null terminated list of interrupt names */ /* FIXME: can this be done better? Look at the PPC's interrupt mechanism and table for a rough idea of where it will go next */ int nr_interrupts; char **interrupt_names; /* active watchpoints */ int last_point_nr; sim_watch_point *points; } sim_watchpoints; /* Watch install handler. */ MODULE_INSTALL_FN sim_watchpoint_install; #endif /* SIM_WATCH_H */