-/* 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).
+/* Generic remote debugging interface for simulators.
+ Copyright 1993 Free Software Foundation, Inc.
+ Contributed by Cygnus Support.
+ Steve Chamberlain (sac@cygnus.com) and Doug Evans (dje@cygnus.com).
This file is part of GDB.
#include "terminal.h"
#include "target.h"
#include "gdbcore.h"
-#include "sp64sim.h"
+#include "remote-sim.h"
/* Naming conventions:
simif_xxx are internal objects that describe top level interfaces to the
- simulator (simif for SIMulator InterFace).
+ simulator (simif for SIMulator InterFace, duh...).
sim_xxx are external counterparts to the simif_xxx objects that must be
- provided by the simulator. */
+ provided by the simulator.
+
+ See simif.h for a description. */
/* Forward data declarations */
extern struct target_ops simif_ops;
-int simif_verbose = 0; /* available to the simulator to use */
+int sim_verbose = 0; /* available to the simulator to use */
static int program_loaded = 0;
{
if (regno == -1)
{
- if (simif_verbose)
- printf_filtered ("simif_fetch_register: %d\n", regno);
- for (regno = 0; regno < 16; regno++)
+ for (regno = 0; regno < NUM_REGS; regno++)
simif_fetch_register (regno);
}
else
sim_fetch_register (regno, buf);
supply_register (regno, buf);
- if (simif_verbose)
+ if (sim_verbose)
{
printf_filtered ("simif_fetch_register: %d", regno);
- dump_mem (buf, sizeof (REGISTER_TYPE));
+ /* FIXME: We could print something more intelligible. */
+ dump_mem (buf, REGISTER_RAW_SIZE (regno));
}
}
}
{
if (regno == -1)
{
- if (simif_verbose)
- printf_filtered ("simif_store_register: %d\n", regno);
- for (regno = 0; regno < 16; regno++)
+ for (regno = 0; regno < NUM_REGS; regno++)
simif_store_register (regno);
}
- else
+ else
{
- char value[sizeof (REGISTER_TYPE)];
+ /* FIXME: Until read_register() returns LONGEST, we have this. */
+ char value[MAX_REGISTER_RAW_SIZE];
read_register_gen (regno, value);
- SWAP_TARGET_AND_HOST (value, sizeof (REGISTER_TYPE));
+ SWAP_TARGET_AND_HOST (value, REGISTER_RAW_SIZE (regno));
sim_store_register (regno, value);
- if (simif_verbose)
+ if (sim_verbose)
{
printf_filtered ("simif_store_register: %d", regno);
- dump_mem (value, sizeof (REGISTER_TYPE));
+ /* FIXME: We could print something more intelligible. */
+ dump_mem (value, REGISTER_RAW_SIZE (regno));
}
}
}
static void
-simif_kill (arg,from_tty)
-char *arg;
-int from_tty;
+simif_kill ()
{
- if (simif_verbose)
- printf_filtered ("simif_kill: arg \"%s\"\n", arg);
+ if (sim_verbose)
+ printf_filtered ("simif_kill\n");
sim_kill (); /* close fd's, remove mappings */
inferior_pid = 0;
}
-/* Download a file specified in 'args', to the sim. */
+/* Load an executable file into the target process. This is expected to
+ not only bring new code into the target process, but also to update
+ GDB's symbol tables to match. */
static void
-simif_load (args, fromtty)
- char *args;
+simif_load (prog, fromtty)
+ char *prog;
int fromtty;
{
bfd *abfd;
- if (simif_verbose)
- printf_filtered ("simif_load: args \"%s\"\n", args);
+ if (sim_verbose)
+ printf_filtered ("simif_load: prog \"%s\"\n", prog);
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");
+ abfd = bfd_openr (prog, (char *) 0);
if (!abfd)
- error ("Unable to open file %s.", args);
+ error ("Unable to open file %s.", prog);
- if (bfd_check_format (abfd, bfd_object) ==0)
+ if (bfd_check_format (abfd, bfd_object) == 0)
error ("File is not an object file.");
- if (sim_load (abfd, args) != 0)
+ if (sim_load (abfd, prog) != 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 */
+ sim_set_pc (abfd->start_address);
+}
+
+/*
+ * This is a utility routine that sim_load() can call to do the work.
+ * The result is 0 for success, non-zero for failure.
+ *
+ * Eg: int sim_load (bfd *bfd, char *prog) { return sim_load_standard (bfd); }
+ */
+
+sim_load_standard (abfd)
+ bfd *abfd;
+{
+ asection *s;
+
+ 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 (s->vma + i, buffer, sub_delta);
+ printf_filtered ("*");
+ fflush (stdout);
+ }
+ printf_filtered ("\n");
+ free (buffer);
+ }
+ s = s->next;
+ }
+
+ return 0;
}
+/* Start an inferior process and set inferior_pid to its pid.
+ EXEC_FILE is the file to run.
+ ALLARGS is a string containing the arguments to the program.
+ ENV is the environment vector to pass. Errors reported with error().
+ On VxWorks and various standalone systems, we ignore exec_file. */
/* This is called not only when we first attach, but also when the
user types "run" after having attached. */
if (! program_loaded)
error ("No program loaded.");
- if (simif_verbose)
+ if (sim_verbose)
printf_filtered ("simif_create_inferior: exec_file \"%s\", args \"%s\"\n",
exec_file, args);
strcat (arg_buf, args);
argv = buildargv (arg_buf);
make_cleanup (freeargv, (char *) argv);
- sim_set_args (argv, env);
+ if (sim_set_args (argv, env) != 0)
+ return;
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. */
+/* The open routine takes the rest of the parameters from the command,
+ and (if successful) pushes a new target onto the stack.
+ Targets should supply this routine, if only to provide an error message. */
+/* Called when selecting the simulator. EG: (gdb) target sim name. */
static void
-simif_open (name, from_tty)
- char *name;
+simif_open (args, from_tty)
+ char *args;
int from_tty;
{
- if (simif_verbose)
- printf_filtered ("simif_open: name \"%s\"\n", name);
+ if (sim_verbose)
+ printf_filtered ("simif_open: args \"%s\"\n", args);
- if (sim_init (name) != 0)
+ if (sim_open (args) != 0)
{
error ("Unable to initialize simulator (insufficient memory?).");
return;
push_target (&simif_ops);
target_fetch_registers (-1);
+ /* FIXME: check from_tty here? */
printf_filtered ("Connected to the simulator.\n");
}
+/* Does whatever cleanup is required for a target that we are no longer
+ going to be calling. Argument says whether we are quitting gdb and
+ should not get hung in case of errors, or whether we want a clean
+ termination even if it takes a while. This routine is automatically
+ always called just before a routine is popped off the target stack.
+ Closing file descriptors and freeing memory are typical things it should
+ do. */
/* Close out all files and local state before this target loses control. */
static void
simif_close (quitting)
int quitting;
{
- if (simif_verbose)
+ if (sim_verbose)
printf_filtered ("simif_close: quitting %d\n", quitting);
program_loaded = 0;
delete all mappings. */
}
+/* Takes a program previously attached to and detaches it.
+ The program may resume execution (some targets do, some don't) and will
+ no longer stop on signals, etc. We better not have left any breakpoints
+ in the program or it'll die when it hits one. ARGS is arguments
+ typed by the user (e.g. a signal to send the process). FROM_TTY
+ says whether to be verbose or not. */
/* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
+ 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)
+ if (sim_verbose)
printf_filtered ("simif_detach: args \"%s\"\n", args);
pop_target (); /* calls simif_close to do the real work */
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
}
-/* Tell the remote machine to resume. */
-/* FIXME: What are A and B? */
+/* Resume execution of the target process. STEP says whether to single-step
+ or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
+ to the target, or zero for no signal. */
static void
-simif_resume (a,b)
+simif_resume (pid, step, siggnal)
+ int pid, step, siggnal;
{
- if (simif_verbose)
- printf_filtered ("simif_resume: %d/%d\n", a, b);
+ if (sim_verbose)
+ printf_filtered ("simif_resume: step %d, signal %d\n", step, siggnal);
- sim_resume (a, b);
+ sim_resume (step, siggnal);
}
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
+/* Wait for inferior process to do something. Return pid of child,
+ or -1 in case of error; store status through argument pointer STATUS,
+ just as `wait' would. */
static int
simif_wait (status)
WAITTYPE *status;
{
- if (simif_verbose)
+ if (sim_verbose)
printf_filtered ("simif_wait: ");
#if 1
*status = sim_stop_signal ();
#else
WSETSTOP (*status, sim_stop_signal ());
#endif
- if (simif_verbose)
+ if (sim_verbose)
printf_filtered ("status %d\n", *status);
return 0;
}
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 (sim_verbose)
+ {
+ printf_filtered ("simif_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
+ myaddr, memaddr, len, write);
+ if (sim_verbose && write)
+ dump_mem(myaddr, len);
+ }
+
if (write)
- {
- len = sim_write (memaddr, myaddr, len);
- }
+ {
+ len = sim_write (memaddr, myaddr, len);
+ }
else
- {
- len = sim_read (memaddr, myaddr, len);
- if (simif_verbose && len > 0)
- dump_mem(myaddr, len);
- }
+ {
+ len = sim_read (memaddr, myaddr, len);
+ if (sim_verbose && len > 0)
+ dump_mem(myaddr, len);
+ }
return len;
}
static void
-simif_files_info ()
+simif_files_info (target)
+ struct target_ops *target;
{
char *file = "nothing";
if (exec_bfd)
file = bfd_get_filename (exec_bfd);
- if (simif_verbose)
+ if (sim_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);
+ {
+ printf_filtered ("\tAttached to %s running program %s\n",
+ target_shortname, file);
+ sim_info ();
+ }
}
-/* Clear the sims notion of what the break points are */
+/* Clear the sims notion of what the break points are. */
+
static void
-simif_mourn ()
+simif_mourn_inferior ()
{
- if (simif_verbose)
- printf_filtered ("simif_mourn:\n");
+ if (sim_verbose)
+ printf_filtered ("simif_mourn_inferior:\n");
remove_breakpoints ();
generic_mourn_inferior ();
struct target_ops simif_ops =
{
- "sim", "SPARC64 Simulator",
- "Use the SPARC64 Simulator",
+ "sim", "simulator",
+ "Use the simulator",
simif_open, simif_close,
0, simif_detach, simif_resume, simif_wait, /* attach */
simif_fetch_register, simif_store_register,
simif_kill, /* FIXME, kill */
simif_load,
0, /* lookup_symbol */
- simif_create_inferior, /* create_inferior */
- simif_mourn, /* mourn_inferior FIXME */
+ simif_create_inferior, /* create_inferior */
+ simif_mourn_inferior, /* mourn_inferior FIXME */
0, /* can_run */
0, /* notice_signals */
process_stratum, 0, /* next */
static void
simif_snoop ()
{
- simif_verbose = ! simif_verbose;
- if (simif_verbose)
+ sim_verbose = ! sim_verbose;
+ if (sim_verbose)
printf_filtered ("Snoop enabled\n");
else
printf_filtered ("Snoop disabled\n");
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");
+ 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