1 /* This file is part of the program psim.
3 Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
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 2 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, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include <signal.h> /* FIXME - should be machine dependant version */
29 #undef printf_filtered /* blow away the mapping */
45 #include "remote-sim.h"
48 /* Structures used by the simulator, for gdb just have static structures */
50 static psim *simulator;
51 static device *root_device;
52 static const char *register_names[] = REGISTER_NAMES;
57 /* Note: The simulation is not created by sim_open() because
58 complete information is not yet available */
60 TRACE(trace_gdb, ("sim_open(args=%s) called\n", args ? args : "(null)"));
62 if (root_device != NULL)
63 sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n");
64 root_device = psim_tree();
68 char **argv = buildargv(args);
69 psim_options(root_device, argv);
73 if (ppc_trace[trace_opts])
79 sim_close (int quitting)
81 TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting));
82 if (ppc_trace[trace_print_info] && simulator != NULL)
83 psim_print_info (simulator, ppc_trace[trace_print_info]);
88 sim_load (char *prog, int from_tty)
91 TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n",
95 /* parse the arguments, assume that the file is argument 0 */
96 argv = buildargv(prog);
97 ASSERT(argv != NULL && argv[0] != NULL);
99 /* create the simulator */
100 TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n"));
101 simulator = psim_create(argv[0], root_device);
103 /* bring in all the data section */
104 psim_init(simulator);
106 /* release the arguments */
109 /* `I did it my way' */
117 TRACE(trace_gdb, ("sim_kill(void) called\n"));
118 /* do nothing, nothing to do */
123 sim_read (SIM_ADDR mem, unsigned char *buf, int length)
125 int result = psim_read_memory(simulator, MAX_NR_PROCESSORS,
127 TRACE(trace_gdb, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
128 (long)mem, (long)buf, length, result));
134 sim_write (SIM_ADDR mem, unsigned char *buf, int length)
136 int result = psim_write_memory(simulator, MAX_NR_PROCESSORS,
139 TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n",
140 (long)mem, (long)buf, length, result));
146 sim_fetch_register (int regno, unsigned char *buf)
148 if (simulator == NULL) {
151 TRACE(trace_gdb, ("sim_fetch_register(regno=%d(%s), buf=0x%lx)\n",
152 regno, register_names[regno], (long)buf));
153 psim_read_register(simulator, MAX_NR_PROCESSORS,
154 buf, register_names[regno],
160 sim_store_register (int regno, unsigned char *buf)
162 if (simulator == NULL)
164 TRACE(trace_gdb, ("sim_store_register(regno=%d(%s), buf=0x%lx)\n",
165 regno, register_names[regno], (long)buf));
166 psim_write_register(simulator, MAX_NR_PROCESSORS,
167 buf, register_names[regno],
173 sim_info (int verbose)
175 TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose));
176 psim_print_info (simulator, verbose);
181 sim_create_inferior (SIM_ADDR start_address, char **argv, char **envp)
183 unsigned_word entry_point = start_address;
185 TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
188 psim_init(simulator);
189 psim_stack(simulator, argv, envp);
191 psim_write_register(simulator, -1 /* all start at same PC */,
192 &entry_point, "pc", cooked_transfer);
196 static volatile int sim_should_run;
199 sim_stop_reason (enum sim_stop *reason, int *sigrc)
201 psim_status status = psim_get_status(simulator);
203 switch (CURRENT_ENVIRONMENT) {
205 case USER_ENVIRONMENT:
206 case VIRTUAL_ENVIRONMENT:
207 switch (status.reason) {
209 *reason = sim_stopped;
211 if (sim_should_run) {
212 error("sim_stop_reason() unknown reason for halt\n");
216 *reason = sim_stopped;
220 *reason = sim_exited;
224 *reason = sim_signalled;
225 *sigrc = status.signal;
230 case OPERATING_ENVIRONMENT:
231 *reason = sim_stopped;
236 error("sim_stop_reason() - unknown environment\n");
240 TRACE(trace_gdb, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n",
241 (long)reason, (long)*reason, (long)sigrc, (long)*sigrc));
246 /* Run (or resume) the program. */
254 sim_resume (int step, int siggnal)
256 TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n",
261 psim_step(simulator);
262 /* sim_stop_reason has a sanity check for stopping while
263 was_continuing. We don't want that here so reset sim_should_run. */
270 prev = signal(SIGINT, sim_ctrl_c);
272 psim_run_until_stop(simulator, &sim_should_run);
273 signal(SIGINT, prev);
278 sim_do_command (char *cmd)
280 TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n",
281 cmd ? cmd : "(null)"));
283 char **argv = buildargv(cmd);
284 psim_command(root_device, argv);
290 /* Map simulator IO operations onto the corresponding GDB I/O
293 NB: Only a limited subset of operations are mapped across. More
294 advanced operations (such as dup or write) must either be mapped to
295 one of the below calls or handled internally */
297 static host_callback *callbacks;
300 sim_io_read_stdin(char *buf,
303 switch (CURRENT_STDIO) {
305 return callbacks->read_stdin(callbacks, buf, sizeof_buf);
308 return callbacks->read(callbacks, 0, buf, sizeof_buf);
311 error("sim_io_read_stdin: unaccounted switch\n");
318 sim_io_write_stdout(const char *buf,
321 switch (CURRENT_STDIO) {
323 return callbacks->write_stdout(callbacks, buf, sizeof_buf);
326 return callbacks->write(callbacks, 1, buf, sizeof_buf);
329 error("sim_io_write_stdout: unaccounted switch\n");
336 sim_io_write_stderr(const char *buf,
339 switch (CURRENT_STDIO) {
341 /* NB: I think there should be an explicit write_stderr callback */
342 return callbacks->write(callbacks, 3, buf, sizeof_buf);
345 return callbacks->write(callbacks, 3, buf, sizeof_buf);
348 error("sim_io_write_stderr: unaccounted switch\n");
356 sim_io_printf_filtered(const char *fmt,
361 /* format the message */
363 vsprintf(message, fmt, ap);
366 if (strlen(message) >= sizeof(message))
367 error("sim_io_printf_filtered: buffer overflow\n");
368 callbacks->printf_filtered(callbacks, "%s", message);
372 sim_io_flush_stdoutput(void)
374 switch (CURRENT_STDIO) {
376 gdb_flush (gdb_stdout);
381 error("sim_io_read_stdin: unaccounted switch\n");
387 sim_set_callbacks (host_callback *callback)
389 callbacks = callback;
390 TRACE(trace_gdb, ("sim_set_callbacks called\n"));
398 void *memory = (void*)xmalloc(size);
400 error("xmalloc failed\n");
401 memset(memory, 0, size);
405 void zfree(void *data)