1 files changed, 78 insertions, 0 deletions
diff --git a/sim/common/sim-watch.h b/sim/common/sim-watch.h
new file mode 100644
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+++ b/sim/common/sim-watch.h
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+/* 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 */