/* This file is part of the program psim.
- Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+ Copyright 1994, 1995, 1996, 1998, 2003 Andrew Cagney
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
#include <stdarg.h>
#include <ctype.h>
-#include "basics.h"
#include "psim.h"
+#include "options.h"
+
+#undef printf_filtered /* blow away the mapping */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#endif
-#include "../../gdb/defs.h"
-
-#include "devices.h"
+#include "libiberty.h"
+#include "bfd.h"
+#include "gdb/callback.h"
+#include "gdb/remote-sim.h"
+#include "gdb/signals.h"
-#include "../../gdb/remote-sim.h"
-#include "../../gdb/callback.h"
+/* 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;
/* Structures used by the simulator, for gdb just have static structures */
-static psim *simulator;
-static char *register_names[] = REGISTER_NAMES;
-static int print_info = 0;
+psim *simulator;
+static device *root_device;
+static host_callback *callbacks;
-void
-sim_open (char *args)
+SIM_DESC
+sim_open (SIM_OPEN_KIND kind,
+ host_callback *callback,
+ struct bfd *abfd,
+ char **argv)
{
- int i;
+ 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(args=%s) called\n", args ? args : "(null)"));
-
- if (args) {
- char **argv = buildargv(args);
- int argp = 0;
- int argc;
- for (argc = 0; argv[argc]; argc++);
-
- while (argp < argc) {
- if (*argv[argp] != '-')
- error ("Argument is not an option '%s'", argv[argp]);
-
- else {
- /* check arguments -- note, main.c also contains argument processing
- code for the standalone emulator. */
- char *p = argv[argp] + 1;
- while (*p != '\0') {
- switch (*p) {
- default:
- printf_filtered("Usage:\n\ttarget sim [ -t <trace-option> ]\n");
- trace_usage();
- error ("");
- break;
- case 't':
- argp += 1;
- if (argv[argp] == NULL)
- error("Missing <trace> option for -t\n");
- trace_option(argv[argp]); /* better fail if NULL */
- break;
- case 'I':
- print_info = 1;
- break;
- }
- }
- }
- argp += 1;
- }
- }
+ 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;
- /* do something */
- TRACE(trace_tbd, ("sim_open() - TBD - should parse the arguments\n"));
- TRACE(trace_tbd, ("sim_open() - TBD - can not create simulator here as do not have description of it\n"));
+ 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 (int quitting)
+sim_close (SIM_DESC sd, int quitting)
{
TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting));
- if (print_info)
- psim_print_info (simulator, 1);
-
- /* nothing to do */
+ if (ppc_trace[trace_print_info] && simulator != NULL)
+ psim_print_info (simulator, ppc_trace[trace_print_info]);
}
-int
-sim_load (char *prog, int from_tty)
+SIM_RC
+sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
{
- char **argv;
TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
prog, from_tty));
ASSERT(prog != NULL);
- /* parse the arguments, assume that the file is argument 0 */
- argv = buildargv(prog);
- ASSERT(argv != NULL && argv[0] != NULL);
-
/* create the simulator */
TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
- simulator = psim_create(argv[0]);
+ simulator = psim_create(prog, root_device);
/* bring in all the data section */
psim_init(simulator);
- /* release the arguments */
- freeargv(argv);
-
- /* `I did it my way' */
- return 0;
-}
-
+ /* 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);
+ }
-void
-sim_kill (void)
-{
- TRACE(trace_gdb, ("sim_kill(void) called\n"));
- /* do nothing, nothing to do */
+ return SIM_RC_OK;
}
int
-sim_read (SIM_ADDR mem, unsigned char *buf, int length)
+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%x, buf=0x%x, length=%d) = %d\n",
- mem, buf, length, result));
+ 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_ADDR mem, unsigned char *buf, int length)
+sim_write (SIM_DESC sd, SIM_ADDR mem, const 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%x, buf=0x%x, length=%d) = %d\n",
- mem, buf, length, result));
+ TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
+ (long)mem, (long)buf, length, result));
return result;
}
-
-void
-sim_fetch_register (int regno, unsigned char *buf)
-{
- if (simulator == NULL) {
- return;
- }
- TRACE(trace_gdb, ("sim_fetch_register(regno=%d(%s), buf=0x%x)\n",
- regno, register_names[regno], buf));
- psim_read_register(simulator, MAX_NR_PROCESSORS,
- buf, register_names[regno],
- raw_transfer);
-}
-
-
void
-sim_store_register (int regno, unsigned char *buf)
-{
- if (simulator == NULL)
- return;
- TRACE(trace_gdb, ("sim_store_register(regno=%d(%s), buf=0x%x)\n",
- regno, register_names[regno], buf));
- psim_write_register(simulator, MAX_NR_PROCESSORS,
- buf, register_names[regno],
- raw_transfer);
-}
-
-
-void
-sim_info (int verbose)
+sim_info (SIM_DESC sd, int verbose)
{
TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose));
psim_print_info (simulator, verbose);
}
-void
-sim_create_inferior (SIM_ADDR start_address, char **argv, char **envp)
+SIM_RC
+sim_create_inferior (SIM_DESC sd,
+ struct bfd *abfd,
+ char **argv,
+ char **envp)
{
- unsigned_word entry_point = start_address;
-
+ unsigned_word entry_point;
TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
- start_address));
+ 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);
+ ASSERT (psim_write_register(simulator, -1 /* all start at same PC */,
+ &entry_point, "pc", cooked_transfer) > 0);
+ return SIM_RC_OK;
}
-static volatile int sim_should_run;
-
void
-sim_stop_reason (enum sim_stop *reason, int *sigrc)
+sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
{
psim_status status = psim_get_status(simulator);
- switch (CURRENT_ENVIRONMENT) {
-
- case USER_ENVIRONMENT:
- case VIRTUAL_ENVIRONMENT:
- switch (status.reason) {
- case was_continuing:
- *reason = sim_stopped;
- *sigrc = SIGTRAP;
- if (sim_should_run) {
- error("sim_stop_reason() unknown reason for halt\n");
- }
- break;
- case was_trap:
- *reason = sim_stopped;
- *sigrc = SIGTRAP;
- break;
- case was_exited:
- *reason = sim_exited;
- *sigrc = 0;
- break;
- case was_signalled:
- *reason = sim_signalled;
+ switch (status.reason) {
+ case was_continuing:
+ *reason = sim_stopped;
+ if (status.signal == 0)
+ *sigrc = GDB_SIGNAL_TRAP;
+ else
*sigrc = status.signal;
- break;
- }
break;
-
- case OPERATING_ENVIRONMENT:
+ case was_trap:
*reason = sim_stopped;
- *sigrc = SIGTRAP;
+ *sigrc = GDB_SIGNAL_TRAP;
+ break;
+ case was_exited:
+ *reason = sim_exited;
+ *sigrc = status.signal;
+ break;
+ case was_signalled:
+ *reason = sim_signalled;
+ *sigrc = status.signal;
break;
-
- default:
- error("sim_stop_reason() - unknown environment\n");
-
}
- TRACE(trace_gdb, ("sim_stop_reason(reason=0x%x(%d), sigrc=0x%x(%d))\n",
- reason, *reason, sigrc, *sigrc));
+ 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. */
-static void
-sim_ctrl_c()
+
+int
+sim_stop (SIM_DESC sd)
{
- sim_should_run = 0;
+ psim_stop (simulator);
+ return 1;
}
void
-sim_resume (int step, int siggnal)
+sim_resume (SIM_DESC sd, int step, int siggnal)
{
- void (*prev) ();
- unsigned_word program_counter;
-
TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n",
step, siggnal));
- prev = signal(SIGINT, sim_ctrl_c);
- sim_should_run = 1;
-
if (step)
- psim_step(simulator);
+ {
+ psim_step (simulator);
+ }
else
- psim_run_until_stop(simulator, &sim_should_run);
+ {
+ psim_run (simulator);
+ }
+}
- signal(SIGINT, prev);
+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);
+ }
+}
+
+char **
+sim_complete_command (SIM_DESC sd, char *text, char *word)
+{
+ return NULL;
+}
+
+/* Polling, if required */
+
+void
+sim_io_poll_quit (void)
+{
+ if (callbacks->poll_quit != NULL && poll_quit_count-- < 0)
+ {
+ poll_quit_count = POLL_QUIT_INTERVAL;
+ 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_do_command(char *cmd)
+sim_io_printf_filtered(const char *fmt,
+ ...)
{
- TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", cmd));
+ 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;
+ }
}
void
-sim_set_callbacks (host_callback *callback)
+sim_io_error (SIM_DESC sd, const char *fmt, ...)
{
- TRACE(trace_gdb, ("sim_set_callbacks called\n"));
+ va_list ap;
+ va_start(ap, fmt);
+ callbacks->evprintf_filtered (callbacks, fmt, ap);
+ va_end(ap);
+ callbacks->error (callbacks, "");
}
/****/
void *memory = (void*)xmalloc(size);
if (memory == NULL)
error("xmalloc failed\n");
- bzero(memory, size);
+ memset(memory, 0, size);
return memory;
}
-
-void zfree(void *data)
-{
- mfree(NULL, data);
-}
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