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* remote-sim.c: first attempt at general simulator interface
* remote-hms.c: whitespace * h8300-tdep.c: (h8300_skip_prologue, examine_prologue): understand new stack layout. (print_register_hook): print ccr register in a fancy way.
This commit is contained in:
Steve Chamberlain
293
gdb/remote-sim.c
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293
gdb/remote-sim.c
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/* Remote debugging interface for generalized simulator
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Copyright 1992 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Steve Chamberlain
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(sac@cygnus.com).
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This file is part of GDB.
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "wait.h"
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#include "value.h"
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#include <string.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <errno.h>
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#include "terminal.h"
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#include "target.h"
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#include "gdbcore.h"
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/* Forward data declarations */
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extern struct target_ops sim_ops; /* Forward declaration */
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int
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sim_write_inferior_memory (memaddr, myaddr, len)
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CORE_ADDR memaddr;
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unsigned char *myaddr;
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int len;
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{
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return sim_write(memaddr, myaddr, len);
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}
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static int
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store_register(regno)
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int regno;
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{
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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store_register(regno);
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}
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else
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{
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sim_store_register(regno, read_register(regno));
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}
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return 0;
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}
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/*
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* Download a file specified in 'args', to the sim.
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*/
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static void
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sim_load(args,fromtty)
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char *args;
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int fromtty;
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{
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bfd *abfd;
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asection *s;
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inferior_pid = 0;
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abfd = bfd_openr(args, (char*)0);
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if (!abfd)
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{
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printf_filtered("Unable to open file %s\n", args);
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return;
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}
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if (bfd_check_format(abfd, bfd_object) ==0)
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{
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printf_filtered("File is not an object file\n");
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return ;
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}
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s = abfd->sections;
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while (s != (asection *)NULL)
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{
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if (s->flags & SEC_LOAD)
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{
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int i;
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int delta = 4096;
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char *buffer = xmalloc(delta);
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printf_filtered("%s\t: 0x%4x .. 0x%4x ",
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s->name, s->vma, s->vma + s->_raw_size);
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for (i = 0; i < s->_raw_size; i+= delta)
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{
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int sub_delta = delta;
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if (sub_delta > s->_raw_size - i)
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sub_delta = s->_raw_size - i ;
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bfd_get_section_contents(abfd, s, buffer, i, sub_delta);
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sim_write_inferior_memory(s->vma + i, buffer, sub_delta);
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printf_filtered("*");
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fflush(stdout);
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}
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printf_filtered( "\n");
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free(buffer);
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}
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s = s->next;
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}
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sim_store_register(PC_REGNUM, abfd->start_address);
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}
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/* This is called not only when we first attach, but also when the
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user types "run" after having attached. */
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void
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sim_create_inferior (execfile, args, env)
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char *execfile;
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char *args;
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char **env;
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{
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int entry_pt;
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if (args && *args)
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error ("Can't pass arguments to remote sim process.");
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if (execfile == 0 || exec_bfd == 0)
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error ("No exec file specified");
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entry_pt = (int) bfd_get_start_address (exec_bfd);
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init_wait_for_inferior ();
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insert_breakpoints ();
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proceed(entry_pt, -1, 0);
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}
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static int
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sim_open (name, from_tty)
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char *name;
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int from_tty;
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{
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if(name == 0)
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{
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name = "";
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}
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push_target (&sim_ops);
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target_fetch_registers(-1);
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printf_filtered("Connected to the simulator.\n");
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}
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/* Close out all files and local state before this target loses control. */
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static int
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sim_close (quitting)
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int quitting;
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{
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}
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/* Terminate the open connection to the remote debugger.
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Use this when you want to detach and do something else
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with your gdb. */
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int
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sim_detach (args,from_tty)
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char *args;
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int from_tty;
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{
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pop_target(); /* calls sim_close to do the real work */
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if (from_tty)
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printf_filtered ("Ending remote %s debugging\n", target_shortname);
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return 0;
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}
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/* Tell the remote machine to resume. */
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/* Wait until the remote machine stops, then return,
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storing status in STATUS just as `wait' would. */
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int
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sim_wait (status)
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WAITTYPE *status;
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{
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WSETSTOP(*status, sim_stop_signal());
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return 0;
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}
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static void
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fetch_register(regno)
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int regno;
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{
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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fetch_register(regno);
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}
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else
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{
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char buf[MAX_REGISTER_RAW_SIZE];
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sim_fetch_register(regno, buf);
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supply_register(regno, buf);
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}
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}
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int
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sim_xfer_inferior_memory(memaddr, myaddr, len, write, target)
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CORE_ADDR memaddr;
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char *myaddr;
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int len;
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int write;
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struct target_ops *target; /* ignored */
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{
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if (write)
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{
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sim_write(memaddr, myaddr, len);
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}
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else
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{
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sim_read(memaddr, myaddr, len);
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}
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return len;
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}
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/* This routine is run as a hook, just before the main command loop is
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entered. If gdb is configured for the H8, but has not had its
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target specified yet, this will loop prompting the user to do so.
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*/
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void
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sim_before_main_loop ()
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{
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push_target (&sim_ops);
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}
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static int rem_resume(a,b)
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{
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sim_resume(a,b);
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return 0;
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}
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pstore()
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{
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return 1;
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}
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/* Define the target subroutine names */
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struct target_ops sim_ops =
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{
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"sim", "simulator",
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"Use the simulator",
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sim_open, sim_close,
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0, sim_detach, rem_resume, sim_wait, /* attach */
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fetch_register, store_register,
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pstore,
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sim_xfer_inferior_memory,
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0,
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0, 0, /* Breakpoints */
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0, 0, 0, 0, 0, /* Terminal handling */
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pstore,
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sim_load,
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0, /* lookup_symbol */
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sim_create_inferior, /* create_inferior */
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pstore, /* mourn_inferior FIXME */
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0, /* can_run */
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0, /* notice_signals */
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process_stratum, 0, /* next */
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1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
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0,0, /* Section pointers */
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OPS_MAGIC, /* Always the last thing */
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};
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/***********************************************************************/
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void
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_initialize_remote_sim ()
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{
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add_target (&sim_ops);
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}
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