-/* Remote debugging interface for SPARC64 Simulator.
- Copyright 1992 Free Software Foundation, Inc.
- Contributed by Cygnus Support. Hacked from Steve Chamberlain's Z8000 work
- by Doug Evans. (dje@cygnus.com).
-
-This file is part of GDB.
-
-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 of the License, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include "defs.h"
-#include "inferior.h"
-#include "wait.h"
-#include "value.h"
-#include <string.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <setjmp.h>
-#include <errno.h>
-#include "terminal.h"
-#include "target.h"
-#include "gdbcore.h"
-#include "sp64sim.h"
-
-/* Naming conventions:
-
- simif_xxx are internal objects that describe top level interfaces to the
- simulator (simif for SIMulator InterFace).
-
- sim_xxx are external counterparts to the simif_xxx objects that must be
- provided by the simulator. */
-
-/* Forward data declarations */
-extern struct target_ops simif_ops;
-
-int simif_verbose = 0; /* available to the simulator to use */
-
-static int program_loaded = 0;
-
-static void dump_mem ();
-
-static void
-simif_fetch_register (regno)
-int regno;
-{
- if (regno == -1)
- {
- if (simif_verbose)
- printf_filtered ("simif_fetch_register: %d\n", regno);
- for (regno = 0; regno < 16; regno++)
- simif_fetch_register (regno);
- }
- else
- {
- char buf[MAX_REGISTER_RAW_SIZE];
-
- sim_fetch_register (regno, buf);
- supply_register (regno, buf);
- if (simif_verbose)
- {
- printf_filtered ("simif_fetch_register: %d", regno);
- dump_mem (buf, sizeof (REGISTER_TYPE));
- }
- }
-}
-
-static void
-simif_store_register (regno)
-int regno;
-{
- if (regno == -1)
- {
- if (simif_verbose)
- printf_filtered ("simif_store_register: %d\n", regno);
- for (regno = 0; regno < 16; regno++)
- simif_store_register (regno);
- }
- else
- {
- char value[sizeof (REGISTER_TYPE)];
-
- read_register_gen (regno, value);
- SWAP_TARGET_AND_HOST (value, sizeof (REGISTER_TYPE));
- sim_store_register (regno, value);
- if (simif_verbose)
- {
- printf_filtered ("simif_store_register: %d", regno);
- dump_mem (value, sizeof (REGISTER_TYPE));
- }
- }
-}
-
-static void
-simif_kill (arg,from_tty)
-char *arg;
-int from_tty;
-{
- if (simif_verbose)
- printf_filtered ("simif_kill: arg \"%s\"\n", arg);
-
- sim_kill (); /* close fd's, remove mappings */
- inferior_pid = 0;
-}
-
-/* Download a file specified in 'args', to the sim. */
-
-static void
-simif_load (args, fromtty)
- char *args;
- int fromtty;
-{
- bfd *abfd;
-
- if (simif_verbose)
- printf_filtered ("simif_load: args \"%s\"\n", args);
-
- inferior_pid = 0;
- program_loaded = 0;
- /* FIXME: a.out should be a config parm and/or an arg. */
- abfd = bfd_openr (args,"a.out-sunos-big");
-
- if (!abfd)
- error ("Unable to open file %s.", args);
-
- if (bfd_check_format (abfd, bfd_object) ==0)
- error ("File is not an object file.");
-
- if (sim_load (abfd, args) != 0)
- return;
-
- program_loaded = 1;
-
- /* It is sim_load()'s job to set this. */
- /*sim_set_pc (abfd->start_address); - can't do 'cus we use RMTVaddr */
-}
-
-/* This is called not only when we first attach, but also when the
- user types "run" after having attached. */
-
-static void
-simif_create_inferior (exec_file, args, env)
- char *exec_file;
- char *args;
- char **env;
-{
- int len,entry_pt;
- char *arg_buf,**argv;
-
- if (! program_loaded)
- error ("No program loaded.");
-
- if (simif_verbose)
- printf_filtered ("simif_create_inferior: exec_file \"%s\", args \"%s\"\n",
- exec_file, args);
-
- if (exec_file == 0 || exec_bfd == 0)
- error ("No exec file specified.");
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
-
- simif_kill (NULL, NULL);
- remove_breakpoints ();
- init_wait_for_inferior ();
-
- len = 5 + strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
- arg_buf = (char *) alloca (len);
- arg_buf[0] = '\0';
- strcat (arg_buf, exec_file);
- strcat (arg_buf, " ");
- strcat (arg_buf, args);
- argv = buildargv (arg_buf);
- make_cleanup (freeargv, (char *) argv);
- sim_set_args (argv, env);
-
- inferior_pid = 42;
- insert_breakpoints (); /* Needed to get correct instruction in cache */
- proceed (entry_pt, -1, 0);
-}
-
-/* Called when selecting the simulator. EG: (gdb) target sim name.
- NAME unused at present. */
-
-static void
-simif_open (name, from_tty)
- char *name;
- int from_tty;
-{
- if (simif_verbose)
- printf_filtered ("simif_open: name \"%s\"\n", name);
-
- if (sim_init (name) != 0)
- {
- error ("Unable to initialize simulator (insufficient memory?).");
- return;
- }
-
- push_target (&simif_ops);
- target_fetch_registers (-1);
-
- printf_filtered ("Connected to the simulator.\n");
-}
-
-/* Close out all files and local state before this target loses control. */
-
-static void
-simif_close (quitting)
- int quitting;
-{
- if (simif_verbose)
- printf_filtered ("simif_close: quitting %d\n", quitting);
-
- program_loaded = 0;
-
- /* FIXME: Need to call sim_close() to close all files and
- delete all mappings. */
-}
-
-/* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
-
-static void
-simif_detach (args,from_tty)
- char *args;
- int from_tty;
-{
- if (simif_verbose)
- printf_filtered ("simif_detach: args \"%s\"\n", args);
-
- pop_target (); /* calls simif_close to do the real work */
- if (from_tty)
- printf_filtered ("Ending simulator %s debugging\n", target_shortname);
-}
-
-/* Tell the remote machine to resume. */
-/* FIXME: What are A and B? */
-
-static void
-simif_resume (a,b)
-{
- if (simif_verbose)
- printf_filtered ("simif_resume: %d/%d\n", a, b);
-
- sim_resume (a, b);
-}
-
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
-
-static int
-simif_wait (status)
- WAITTYPE *status;
-{
- if (simif_verbose)
- printf_filtered ("simif_wait: ");
-#if 1
- *status = sim_stop_signal ();
-#else
- WSETSTOP (*status, sim_stop_signal ());
-#endif
- if (simif_verbose)
- printf_filtered ("status %d\n", *status);
- return 0;
-}
-
-/* Get ready to modify the registers array. On machines which store
- individual registers, this doesn't need to do anything. On machines
- which store all the registers in one fell swoop, this makes sure
- that registers contains all the registers from the program being
- debugged. */
-
-static void
-simif_prepare_to_store ()
-{
- /* Do nothing, since we can store individual regs */
-}
-
-static int
-simif_xfer_inferior_memory (memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
-{
- if (simif_verbose)
- {
- printf_filtered ("simif_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
- myaddr, memaddr, len, write);
- if (simif_verbose && write)
- dump_mem(myaddr, len);
- }
-
- if (! program_loaded)
- error ("No program loaded.");
-
- if (write)
- {
- len = sim_write (memaddr, myaddr, len);
- }
- else
- {
- len = sim_read (memaddr, myaddr, len);
- if (simif_verbose && len > 0)
- dump_mem(myaddr, len);
- }
- return len;
-}
-
-static void
-simif_files_info ()
-{
- char *file = "nothing";
-
- if (exec_bfd)
- file = bfd_get_filename (exec_bfd);
-
- if (simif_verbose)
- printf_filtered ("simif_files_info: file \"%s\"\n", file);
-
- if (exec_bfd)
- printf_filtered ("\tAttached to %s running program %s\n",
- target_shortname, file);
-}
-
-/* Clear the sims notion of what the break points are */
-static void
-simif_mourn ()
-{
- if (simif_verbose)
- printf_filtered ("simif_mourn:\n");
-
- remove_breakpoints ();
- generic_mourn_inferior ();
-}
-
-/* Define the target subroutine names */
-
-struct target_ops simif_ops =
-{
- "sim", "SPARC64 Simulator",
- "Use the SPARC64 Simulator",
- simif_open, simif_close,
- 0, simif_detach, simif_resume, simif_wait, /* attach */
- simif_fetch_register, simif_store_register,
- simif_prepare_to_store,
- simif_xfer_inferior_memory,
- simif_files_info,
- 0, 0, /* Breakpoints */
- 0, 0, 0, 0, 0, /* Terminal handling */
- simif_kill, /* FIXME, kill */
- simif_load,
- 0, /* lookup_symbol */
- simif_create_inferior, /* create_inferior */
- simif_mourn, /* mourn_inferior FIXME */
- 0, /* can_run */
- 0, /* notice_signals */
- process_stratum, 0, /* next */
- 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
- 0, 0, /* Section pointers */
- OPS_MAGIC, /* Always the last thing */
-};
-
-static void
-simif_snoop ()
-{
- simif_verbose = ! simif_verbose;
- if (simif_verbose)
- printf_filtered ("Snoop enabled\n");
- else
- printf_filtered ("Snoop disabled\n");
-
-}
-
-/***********************************************************************/
-
-void
-_initialize_remote_sim ()
-{
- add_target (&simif_ops);
- add_com ("snoop", class_obscure, simif_snoop,
- "Show what commands are going to the simulator");
-}
-
-static void
-dump_mem (buf, len)
- char *buf;
- int len;
-{
- if (len <= 8)
- {
- if (len == 8 || len == 4)
- {
- long l[2];
- memcpy (l, buf, len);
- printf_filtered ("\t0x%x", l[0]);
- printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
- }
- else
- {
- int i;
- printf_filtered ("\t");
- for (i = 0; i < len; i++)
- printf_filtered ("0x%x ", buf[i]);
- printf_filtered ("\n");
- }
- }
-}
projects / deliverable / binutils-gdb.git / blobdiff