1999-04-16 03:35:26 +02:00
|
|
|
/* This file is part of the program psim.
|
|
|
|
|
|
|
|
Copyright (C) 1994-1996,1998, Andrew Cagney <cagney@highland.com.au>
|
|
|
|
|
|
|
|
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#include <signal.h> /* FIXME - should be machine dependant version */
|
|
|
|
#include <stdarg.h>
|
|
|
|
#include <ctype.h>
|
|
|
|
|
|
|
|
#include "psim.h"
|
|
|
|
#include "options.h"
|
|
|
|
|
|
|
|
#undef printf_filtered /* blow away the mapping */
|
|
|
|
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
|
|
#include <stdlib.h>
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef HAVE_STRING_H
|
|
|
|
#include <string.h>
|
|
|
|
#else
|
|
|
|
#ifdef HAVE_STRINGS_H
|
|
|
|
#include <strings.h>
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
#include "bfd.h"
|
2002-06-09 17:45:54 +02:00
|
|
|
#include "gdb/callback.h"
|
|
|
|
#include "gdb/remote-sim.h"
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-04-26 20:34:20 +02:00
|
|
|
/* Define the rate at which the simulator should poll the host
|
|
|
|
for a quit. */
|
|
|
|
#ifndef POLL_QUIT_INTERVAL
|
|
|
|
#define POLL_QUIT_INTERVAL 0x20
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int poll_quit_count = POLL_QUIT_INTERVAL;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
/* Structures used by the simulator, for gdb just have static structures */
|
|
|
|
|
|
|
|
static psim *simulator;
|
|
|
|
static device *root_device;
|
|
|
|
static host_callback *callbacks;
|
|
|
|
|
2000-12-08 02:52:41 +01:00
|
|
|
/* We use GDB's gdbarch_register_name function to map GDB register
|
|
|
|
numbers onto names, which we can then look up in the register
|
|
|
|
table. Since the `set architecture' command can select a new
|
|
|
|
processor variant at run-time, the meanings of the register numbers
|
|
|
|
can change, so we need to make sure the sim uses the same
|
|
|
|
name/number mapping that GDB uses.
|
|
|
|
|
|
|
|
(We don't use the REGISTER_NAME macro, which is a wrapper for
|
|
|
|
gdbarch_register_name. We #include GDB's "defs.h", which tries to
|
|
|
|
#include GDB's "config.h", but gets ours instead, and REGISTER_NAME
|
|
|
|
ends up not getting defined. Simpler to just use
|
|
|
|
gdbarch_register_name directly.)
|
|
|
|
|
|
|
|
We used to just use the REGISTER_NAMES macro from GDB's
|
|
|
|
target-dependent header files, which expanded into an initializer
|
|
|
|
for an array of strings. That was kind of nice, because it meant
|
|
|
|
that libsim.a had only a compile-time dependency on GDB; using
|
|
|
|
gdbarch_register_name directly means that there are now link-time
|
|
|
|
and run-time dependencies too.
|
|
|
|
|
|
|
|
Perhaps the host_callback structure could provide a function for
|
|
|
|
retrieving register names; that would be cleaner. */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
SIM_DESC
|
|
|
|
sim_open (SIM_OPEN_KIND kind,
|
|
|
|
host_callback *callback,
|
|
|
|
struct _bfd *abfd,
|
|
|
|
char **argv)
|
|
|
|
{
|
|
|
|
callbacks = callback;
|
|
|
|
|
|
|
|
/* Note: The simulation is not created by sim_open() because
|
|
|
|
complete information is not yet available */
|
|
|
|
/* trace the call */
|
|
|
|
TRACE(trace_gdb, ("sim_open called\n"));
|
|
|
|
|
|
|
|
if (root_device != NULL)
|
|
|
|
sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n");
|
|
|
|
root_device = psim_tree();
|
|
|
|
simulator = NULL;
|
|
|
|
|
|
|
|
psim_options(root_device, argv + 1);
|
|
|
|
|
|
|
|
if (ppc_trace[trace_opts])
|
|
|
|
print_options ();
|
|
|
|
|
|
|
|
/* fudge our descriptor for now */
|
|
|
|
return (SIM_DESC) 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_close (SIM_DESC sd, int quitting)
|
|
|
|
{
|
|
|
|
TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting));
|
|
|
|
if (ppc_trace[trace_print_info] && simulator != NULL)
|
|
|
|
psim_print_info (simulator, ppc_trace[trace_print_info]);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
SIM_RC
|
|
|
|
sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
|
|
|
|
{
|
|
|
|
TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
|
|
|
|
prog, from_tty));
|
|
|
|
ASSERT(prog != NULL);
|
|
|
|
|
|
|
|
/* create the simulator */
|
|
|
|
TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
|
|
|
|
simulator = psim_create(prog, root_device);
|
|
|
|
|
|
|
|
/* bring in all the data section */
|
|
|
|
psim_init(simulator);
|
|
|
|
|
|
|
|
/* get the start address */
|
|
|
|
if (abfd == NULL)
|
|
|
|
{
|
|
|
|
abfd = bfd_openr (prog, 0);
|
|
|
|
if (abfd == NULL)
|
|
|
|
error ("psim: can't open \"%s\": %s\n",
|
|
|
|
prog, bfd_errmsg (bfd_get_error ()));
|
|
|
|
if (!bfd_check_format (abfd, bfd_object))
|
|
|
|
{
|
|
|
|
const char *errmsg = bfd_errmsg (bfd_get_error ());
|
|
|
|
bfd_close (abfd);
|
|
|
|
error ("psim: \"%s\" is not an object file: %s\n",
|
|
|
|
prog, errmsg);
|
|
|
|
}
|
|
|
|
bfd_close (abfd);
|
|
|
|
}
|
|
|
|
|
|
|
|
return SIM_RC_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
|
|
|
|
{
|
|
|
|
int result = psim_read_memory(simulator, MAX_NR_PROCESSORS,
|
|
|
|
buf, mem, length);
|
|
|
|
TRACE(trace_gdb, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
|
|
|
|
(long)mem, (long)buf, length, result));
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_write (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
|
|
|
|
{
|
|
|
|
int result = psim_write_memory(simulator, MAX_NR_PROCESSORS,
|
|
|
|
buf, mem, length,
|
|
|
|
1/*violate_ro*/);
|
|
|
|
TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
|
|
|
|
(long)mem, (long)buf, length, result));
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_fetch_register (SIM_DESC sd, int regno, unsigned char *buf, int length)
|
|
|
|
{
|
|
|
|
char *regname;
|
|
|
|
|
|
|
|
if (simulator == NULL) {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* GDB will sometimes ask for the contents of a register named "";
|
2000-12-08 02:52:41 +01:00
|
|
|
we ignore such requests, and leave garbage in *BUF. In GDB
|
|
|
|
terms, the empty string means "the register with this number is
|
|
|
|
not present in the currently selected architecture variant."
|
|
|
|
That's following the kludge we're using for the MIPS processors.
|
|
|
|
But there are loops that just walk through the entire list of
|
|
|
|
names and try to get everything. */
|
|
|
|
regname = gdbarch_register_name (current_gdbarch, regno);
|
2002-04-15 18:32:55 +02:00
|
|
|
/* FIXME: ezannoni 2002/04/15 Remove the 'vr' and 'vscr' check
|
|
|
|
once AltiVec support is committed. */
|
|
|
|
if (! regname || regname[0] == '\0'
|
|
|
|
|| (regname[0] == 'v' && regname[1] == 'r')
|
|
|
|
|| (strcmp (regname, "vscr") == 0))
|
1999-04-16 03:35:26 +02:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
TRACE(trace_gdb, ("sim_fetch_register(regno=%d(%s), buf=0x%lx)\n",
|
|
|
|
regno, regname, (long)buf));
|
|
|
|
psim_read_register(simulator, MAX_NR_PROCESSORS,
|
|
|
|
buf, regname, raw_transfer);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_store_register (SIM_DESC sd, int regno, unsigned char *buf, int length)
|
|
|
|
{
|
|
|
|
char *regname;
|
|
|
|
|
|
|
|
if (simulator == NULL)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* See comments in sim_fetch_register, above. */
|
2000-12-08 02:52:41 +01:00
|
|
|
regname = gdbarch_register_name (current_gdbarch, regno);
|
2002-04-15 18:32:55 +02:00
|
|
|
/* FIXME: ezannoni 2002/04/15 Remove the 'vr' and 'vscr' check
|
|
|
|
once AltiVec support is committed. */
|
|
|
|
if (! regname || regname[0] == '\0'
|
|
|
|
|| (regname[0] == 'v' && regname[1] == 'r')
|
|
|
|
|| (strcmp (regname, "vscr") == 0))
|
1999-04-16 03:35:26 +02:00
|
|
|
return -1;
|
|
|
|
|
|
|
|
TRACE(trace_gdb, ("sim_store_register(regno=%d(%s), buf=0x%lx)\n",
|
|
|
|
regno, regname, (long)buf));
|
|
|
|
psim_write_register(simulator, MAX_NR_PROCESSORS,
|
|
|
|
buf, regname, raw_transfer);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_info (SIM_DESC sd, int verbose)
|
|
|
|
{
|
|
|
|
TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose));
|
|
|
|
psim_print_info (simulator, verbose);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
SIM_RC
|
|
|
|
sim_create_inferior (SIM_DESC sd,
|
|
|
|
struct _bfd *abfd,
|
|
|
|
char **argv,
|
|
|
|
char **envp)
|
|
|
|
{
|
|
|
|
unsigned_word entry_point;
|
|
|
|
TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
|
|
|
|
entry_point));
|
|
|
|
|
|
|
|
if (simulator == NULL)
|
|
|
|
error ("No program loaded");
|
|
|
|
|
|
|
|
if (abfd != NULL)
|
|
|
|
entry_point = bfd_get_start_address (abfd);
|
|
|
|
else
|
|
|
|
entry_point = 0xfff00000; /* ??? */
|
|
|
|
|
|
|
|
psim_init(simulator);
|
|
|
|
psim_stack(simulator, argv, envp);
|
|
|
|
|
|
|
|
psim_write_register(simulator, -1 /* all start at same PC */,
|
|
|
|
&entry_point, "pc", cooked_transfer);
|
|
|
|
return SIM_RC_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
|
|
|
|
{
|
|
|
|
psim_status status = psim_get_status(simulator);
|
|
|
|
|
|
|
|
switch (status.reason) {
|
|
|
|
case was_continuing:
|
|
|
|
*reason = sim_stopped;
|
|
|
|
if (status.signal == 0)
|
|
|
|
*sigrc = SIGTRAP;
|
|
|
|
else
|
|
|
|
*sigrc = status.signal;
|
|
|
|
break;
|
|
|
|
case was_trap:
|
|
|
|
*reason = sim_stopped;
|
|
|
|
*sigrc = SIGTRAP;
|
|
|
|
break;
|
|
|
|
case was_exited:
|
|
|
|
*reason = sim_exited;
|
|
|
|
*sigrc = status.signal;
|
|
|
|
break;
|
|
|
|
case was_signalled:
|
|
|
|
*reason = sim_signalled;
|
|
|
|
*sigrc = status.signal;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
TRACE(trace_gdb, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n",
|
|
|
|
(long)reason, (long)*reason, (long)sigrc, (long)*sigrc));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Run (or resume) the program. */
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_stop (SIM_DESC sd)
|
|
|
|
{
|
|
|
|
psim_stop (simulator);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_resume (SIM_DESC sd, int step, int siggnal)
|
|
|
|
{
|
|
|
|
TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n",
|
|
|
|
step, siggnal));
|
|
|
|
|
|
|
|
if (step)
|
|
|
|
{
|
|
|
|
psim_step (simulator);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
psim_run (simulator);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_do_command (SIM_DESC sd, char *cmd)
|
|
|
|
{
|
|
|
|
TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n",
|
|
|
|
cmd ? cmd : "(null)"));
|
|
|
|
if (cmd != NULL) {
|
|
|
|
char **argv = buildargv(cmd);
|
|
|
|
psim_command(root_device, argv);
|
|
|
|
freeargv(argv);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Polling, if required */
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_io_poll_quit (void)
|
|
|
|
{
|
1999-04-26 20:34:20 +02:00
|
|
|
if (callbacks->poll_quit != NULL && poll_quit_count-- < 0)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
1999-04-26 20:34:20 +02:00
|
|
|
poll_quit_count = POLL_QUIT_INTERVAL;
|
1999-04-16 03:35:26 +02:00
|
|
|
if (callbacks->poll_quit (callbacks))
|
|
|
|
psim_stop (simulator);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Map simulator IO operations onto the corresponding GDB I/O
|
|
|
|
functions.
|
|
|
|
|
|
|
|
NB: Only a limited subset of operations are mapped across. More
|
|
|
|
advanced operations (such as dup or write) must either be mapped to
|
|
|
|
one of the below calls or handled internally */
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_io_read_stdin(char *buf,
|
|
|
|
int sizeof_buf)
|
|
|
|
{
|
|
|
|
switch (CURRENT_STDIO) {
|
|
|
|
case DO_USE_STDIO:
|
|
|
|
return callbacks->read_stdin(callbacks, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
case DONT_USE_STDIO:
|
|
|
|
return callbacks->read(callbacks, 0, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error("sim_io_read_stdin: unaccounted switch\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_io_write_stdout(const char *buf,
|
|
|
|
int sizeof_buf)
|
|
|
|
{
|
|
|
|
switch (CURRENT_STDIO) {
|
|
|
|
case DO_USE_STDIO:
|
|
|
|
return callbacks->write_stdout(callbacks, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
case DONT_USE_STDIO:
|
|
|
|
return callbacks->write(callbacks, 1, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error("sim_io_write_stdout: unaccounted switch\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
sim_io_write_stderr(const char *buf,
|
|
|
|
int sizeof_buf)
|
|
|
|
{
|
|
|
|
switch (CURRENT_STDIO) {
|
|
|
|
case DO_USE_STDIO:
|
|
|
|
/* NB: I think there should be an explicit write_stderr callback */
|
|
|
|
return callbacks->write(callbacks, 3, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
case DONT_USE_STDIO:
|
|
|
|
return callbacks->write(callbacks, 3, buf, sizeof_buf);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error("sim_io_write_stderr: unaccounted switch\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_io_printf_filtered(const char *fmt,
|
|
|
|
...)
|
|
|
|
{
|
|
|
|
char message[1024];
|
|
|
|
va_list ap;
|
|
|
|
/* format the message */
|
|
|
|
va_start(ap, fmt);
|
|
|
|
vsprintf(message, fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
/* sanity check */
|
|
|
|
if (strlen(message) >= sizeof(message))
|
|
|
|
error("sim_io_printf_filtered: buffer overflow\n");
|
|
|
|
callbacks->printf_filtered(callbacks, "%s", message);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
sim_io_flush_stdoutput(void)
|
|
|
|
{
|
|
|
|
switch (CURRENT_STDIO) {
|
|
|
|
case DO_USE_STDIO:
|
|
|
|
callbacks->flush_stdout (callbacks);
|
|
|
|
break;
|
|
|
|
case DONT_USE_STDIO:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error("sim_io_read_stdin: unaccounted switch\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2001-12-15 06:08:44 +01:00
|
|
|
void
|
|
|
|
sim_io_error (SIM_DESC sd, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
|
|
callbacks->evprintf_filtered (callbacks, fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
callbacks->error (callbacks, "");
|
|
|
|
}
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
/****/
|
|
|
|
|
|
|
|
void *
|
|
|
|
zalloc(long size)
|
|
|
|
{
|
|
|
|
void *memory = (void*)xmalloc(size);
|
|
|
|
if (memory == NULL)
|
|
|
|
error("xmalloc failed\n");
|
|
|
|
memset(memory, 0, size);
|
|
|
|
return memory;
|
|
|
|
}
|
|
|
|
|
|
|
|
void zfree(void *data)
|
|
|
|
{
|
|
|
|
free(data);
|
|
|
|
}
|