1 /* This file is part of the program psim.
3 Copyright 1994, 1995, 1996, 1998, 2003 Andrew Cagney
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <signal.h> /* FIXME - should be machine dependant version */
28 #undef printf_filtered /* blow away the mapping */
42 #include "libiberty.h"
44 #include "gdb/callback.h"
45 #include "gdb/remote-sim.h"
46 #include "gdb/signals.h"
48 /* Define the rate at which the simulator should poll the host
50 #ifndef POLL_QUIT_INTERVAL
51 #define POLL_QUIT_INTERVAL 0x20
54 static int poll_quit_count = POLL_QUIT_INTERVAL;
56 /* Structures used by the simulator, for gdb just have static structures */
59 static device *root_device;
60 static host_callback *callbacks;
63 sim_open (SIM_OPEN_KIND kind,
64 host_callback *callback,
70 /* Note: The simulation is not created by sim_open() because
71 complete information is not yet available */
73 TRACE(trace_gdb, ("sim_open called\n"));
75 if (root_device != NULL)
76 sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n");
77 root_device = psim_tree();
80 psim_options(root_device, argv + 1);
82 if (ppc_trace[trace_opts])
85 /* fudge our descriptor for now */
91 sim_close (SIM_DESC sd, int quitting)
93 TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting));
94 if (ppc_trace[trace_print_info] && simulator != NULL)
95 psim_print_info (simulator, ppc_trace[trace_print_info]);
100 sim_load (SIM_DESC sd, const char *prog, bfd *abfd, int from_tty)
102 TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
104 ASSERT(prog != NULL);
106 /* create the simulator */
107 TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
108 simulator = psim_create(prog, root_device);
110 /* bring in all the data section */
111 psim_init(simulator);
113 /* get the start address */
116 abfd = bfd_openr (prog, 0);
118 error ("psim: can't open \"%s\": %s\n",
119 prog, bfd_errmsg (bfd_get_error ()));
120 if (!bfd_check_format (abfd, bfd_object))
122 const char *errmsg = bfd_errmsg (bfd_get_error ());
124 error ("psim: \"%s\" is not an object file: %s\n",
135 sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
137 int result = psim_read_memory(simulator, MAX_NR_PROCESSORS,
139 TRACE(trace_gdb, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
140 (long)mem, (long)buf, length, result));
146 sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length)
148 int result = psim_write_memory(simulator, MAX_NR_PROCESSORS,
151 TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
152 (long)mem, (long)buf, length, result));
157 sim_info (SIM_DESC sd, int verbose)
159 TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose));
160 psim_print_info (simulator, verbose);
165 sim_create_inferior (SIM_DESC sd,
170 unsigned_word entry_point;
171 TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
174 if (simulator == NULL)
175 error ("No program loaded");
178 entry_point = bfd_get_start_address (abfd);
180 entry_point = 0xfff00000; /* ??? */
182 psim_init(simulator);
183 psim_stack(simulator, argv, envp);
185 ASSERT (psim_write_register(simulator, -1 /* all start at same PC */,
186 &entry_point, "pc", cooked_transfer) > 0);
192 sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
194 psim_status status = psim_get_status(simulator);
196 switch (status.reason) {
198 *reason = sim_stopped;
199 if (status.signal == 0)
200 *sigrc = GDB_SIGNAL_TRAP;
202 *sigrc = status.signal;
205 *reason = sim_stopped;
206 *sigrc = GDB_SIGNAL_TRAP;
209 *reason = sim_exited;
210 *sigrc = status.signal;
213 *reason = sim_signalled;
214 *sigrc = status.signal;
218 TRACE(trace_gdb, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n",
219 (long)reason, (long)*reason, (long)sigrc, (long)*sigrc));
224 /* Run (or resume) the program. */
227 sim_stop (SIM_DESC sd)
229 psim_stop (simulator);
234 sim_resume (SIM_DESC sd, int step, int siggnal)
236 TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n",
241 psim_step (simulator);
245 psim_run (simulator);
250 sim_do_command (SIM_DESC sd, char *cmd)
252 TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n",
253 cmd ? cmd : "(null)"));
255 char **argv = buildargv(cmd);
256 psim_command(root_device, argv);
262 sim_complete_command (SIM_DESC sd, const char *text, const char *word)
267 /* Polling, if required */
270 sim_io_poll_quit (void)
272 if (callbacks->poll_quit != NULL && poll_quit_count-- < 0)
274 poll_quit_count = POLL_QUIT_INTERVAL;
275 if (callbacks->poll_quit (callbacks))
276 psim_stop (simulator);
282 /* Map simulator IO operations onto the corresponding GDB I/O
285 NB: Only a limited subset of operations are mapped across. More
286 advanced operations (such as dup or write) must either be mapped to
287 one of the below calls or handled internally */
290 sim_io_read_stdin(char *buf,
293 switch (CURRENT_STDIO) {
295 return callbacks->read_stdin(callbacks, buf, sizeof_buf);
298 return callbacks->read(callbacks, 0, buf, sizeof_buf);
301 error("sim_io_read_stdin: unaccounted switch\n");
308 sim_io_write_stdout(const char *buf,
311 switch (CURRENT_STDIO) {
313 return callbacks->write_stdout(callbacks, buf, sizeof_buf);
316 return callbacks->write(callbacks, 1, buf, sizeof_buf);
319 error("sim_io_write_stdout: unaccounted switch\n");
326 sim_io_write_stderr(const char *buf,
329 switch (CURRENT_STDIO) {
331 /* NB: I think there should be an explicit write_stderr callback */
332 return callbacks->write(callbacks, 3, buf, sizeof_buf);
335 return callbacks->write(callbacks, 3, buf, sizeof_buf);
338 error("sim_io_write_stderr: unaccounted switch\n");
346 sim_io_printf_filtered(const char *fmt,
351 /* format the message */
353 vsprintf(message, fmt, ap);
356 if (strlen(message) >= sizeof(message))
357 error("sim_io_printf_filtered: buffer overflow\n");
358 callbacks->printf_filtered(callbacks, "%s", message);
362 sim_io_flush_stdoutput(void)
364 switch (CURRENT_STDIO) {
366 callbacks->flush_stdout (callbacks);
371 error("sim_io_read_stdin: unaccounted switch\n");
377 sim_io_error (SIM_DESC sd, const char *fmt, ...)
381 callbacks->evprintf_filtered (callbacks, fmt, ap);
383 callbacks->error (callbacks, "");
391 void *memory = (void*)xmalloc(size);
393 error("xmalloc failed\n");
394 memset(memory, 0, size);