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- /* Remote debugging interface for generalized simulator
- Copyright 1992 Free Software Foundation, Inc.
- Contributed by Cygnus Support. Written by Steve Chamberlain
- (sac@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"
-
- /* Forward data declarations */
- extern struct target_ops sim_ops; /* Forward declaration */
-
- int
- sim_write_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
- {
- return sim_write(memaddr, myaddr, len);
- }
-
- static void
- store_register(regno)
- int regno;
- {
- if (regno == -1)
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- store_register(regno);
- }
- else
- {
- sim_store_register(regno, read_register(regno));
- }
- }
-
-
- /*
- * Download a file specified in 'args', to the sim.
- */
- static void
- sim_load(args,fromtty)
- char *args;
- int fromtty;
- {
- bfd *abfd;
- asection *s;
-
- inferior_pid = 0;
- abfd = bfd_openr(args, (char*)0);
-
- if (!abfd)
- {
- printf_filtered("Unable to open file %s\n", args);
- return;
- }
-
- if (bfd_check_format(abfd, bfd_object) ==0)
- {
- printf_filtered("File is not an object file\n");
- return ;
- }
-
- s = abfd->sections;
- while (s != (asection *)NULL)
- {
- if (s->flags & SEC_LOAD)
- {
- int i;
- int delta = 4096;
- char *buffer = xmalloc(delta);
- printf_filtered("%s\t: 0x%4x .. 0x%4x ",
- s->name, s->vma, s->vma + s->_raw_size);
- for (i = 0; i < s->_raw_size; i+= delta)
- {
- int sub_delta = delta;
- if (sub_delta > s->_raw_size - i)
- sub_delta = s->_raw_size - i ;
-
- bfd_get_section_contents(abfd, s, buffer, i, sub_delta);
- sim_write_inferior_memory(s->vma + i, buffer, sub_delta);
- printf_filtered("*");
- fflush(stdout);
- }
- printf_filtered( "\n");
- free(buffer);
- }
- s = s->next;
- }
-
- sim_store_register(PC_REGNUM, abfd->start_address);
- }
-
- /* This is called not only when we first attach, but also when the
- user types "run" after having attached. */
- void
- sim_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
- {
- int entry_pt;
-
- if (args && *args)
- error ("Can't pass arguments to remote sim process.");
-
- if (execfile == 0 || exec_bfd == 0)
- error ("No exec file specified");
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
- init_wait_for_inferior ();
- insert_breakpoints ();
- proceed(entry_pt, -1, 0);
- }
-
-
-
- static void
- sim_open (name, from_tty)
- char *name;
- int from_tty;
- {
- if(name == 0)
- {
- name = "";
- }
- push_target (&sim_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
- sim_close (quitting)
- int quitting;
- {
- }
-
- /* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
- void
- sim_detach (args,from_tty)
- char *args;
- int from_tty;
- {
- pop_target(); /* calls sim_close to do the real work */
- if (from_tty)
- printf_filtered ("Ending remote %s debugging\n", target_shortname);
-
- }
-
- /* Tell the remote machine to resume. */
-
-
- /* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
-
- int
- sim_wait (status)
- WAITTYPE *status;
- {
- WSETSTOP(*status, sim_stop_signal());
- return 0;
- }
-
- static void
- fetch_register(regno)
- int regno;
- {
- if (regno == -1)
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- fetch_register(regno);
- }
- else
- {
- char buf[MAX_REGISTER_RAW_SIZE];
-
- sim_fetch_register(regno, buf);
- supply_register(regno, buf);
- }
- }
-
-
- int
- sim_xfer_inferior_memory(memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
- {
- if (write)
- {
- sim_write(memaddr, myaddr, len);
- }
- else
- {
- sim_read(memaddr, myaddr, len);
- }
- return len;
- }
-
-
- /* This routine is run as a hook, just before the main command loop is
- entered. If gdb is configured for the H8, but has not had its
- target specified yet, this will loop prompting the user to do so.
- */
-
- void
- sim_before_main_loop ()
- {
- push_target (&sim_ops);
- }
-
-
- static void rem_resume(a,b)
- {
- sim_resume(a,b);
- }
-
- void
- pstore()
- {
- }
- /* Define the target subroutine names */
-
- struct target_ops sim_ops =
- {
- "sim", "simulator",
- "Use the simulator",
- sim_open, sim_close,
- 0, sim_detach, rem_resume, sim_wait, /* attach */
- fetch_register, store_register,
- pstore,
- sim_xfer_inferior_memory,
- 0,
- 0, 0, /* Breakpoints */
- 0, 0, 0, 0, 0, /* Terminal handling */
- pstore,
- sim_load,
- 0, /* lookup_symbol */
- sim_create_inferior, /* create_inferior */
- pstore, /* 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 */
- };
-
- /***********************************************************************/
-
- void
- _initialize_remote_sim ()
- {
- add_target (&sim_ops);
- }
-
-
-