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d4e3adda12
Existing ports already have sizeof_pc set to the same size as sim_cia,
so simply make that part of the core code. We already assume this in
places by way of sim_pc_{get,set}, and this is how it's documented in
the sim-base.h API.
There is code to allow sims to pick different register word sizes from
address sizes, but most ports use the defaults for both (32-bits), and
the few that support multiple register sizes never change the address
size (so address defaults to register). I can't think of any machine
where the register hardware size would be larger than the address word
size either. We have ABIs that behave that way (e.g. x32), but the
hardware is still equivalent register sized.
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/* Simulator watchpoint support.
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Copyright (C) 1997-2021 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SIM_WATCH_H
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#define SIM_WATCH_H
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typedef enum {
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invalid_watchpoint = -1,
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pc_watchpoint,
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clock_watchpoint,
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cycles_watchpoint,
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nr_watchpoint_types,
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} watchpoint_type;
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typedef struct _sim_watch_point sim_watch_point;
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struct _sim_watch_point {
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int ident;
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watchpoint_type type;
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int interrupt_nr; /* == nr_interrupts -> breakpoint */
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int is_periodic;
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int is_within;
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unsigned long arg0;
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unsigned long arg1;
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sim_event *event;
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sim_watch_point *next;
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};
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typedef struct _sim_watchpoints {
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/* Pointer into the host's data structures specifying the
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address/size of the program-counter */
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/* FIXME: In the future this shall be generalized so that any of the
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N processors M registers can be watched */
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void *pc;
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/* Pointer to the handler for interrupt watchpoints */
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/* FIXME: can this be done better? */
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/* NOTE: For the DATA arg, the handler is passed a (char**) pointer
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that is an offset into the INTERRUPT_NAMES vector. Use
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arithmetic to determine the interrupt-nr. */
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sim_event_handler *interrupt_handler;
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/* Pointer to a null terminated list of interrupt names */
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/* FIXME: can this be done better? Look at the PPC's interrupt
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mechanism and table for a rough idea of where it will go next */
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int nr_interrupts;
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const char **interrupt_names;
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/* active watchpoints */
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int last_point_nr;
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sim_watch_point *points;
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} sim_watchpoints;
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/* Watch install handler. */
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MODULE_INSTALL_FN sim_watchpoint_install;
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#endif /* SIM_WATCH_H */
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