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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #include <stdarg.h> | |
23 | #include <stdio.h> | |
24 | #include <fcntl.h> | |
25 | ||
26 | #include <signal.h> | |
27 | ||
28 | #include "psim.h" | |
29 | #include "options.h" | |
30 | #include "device.h" /* FIXME: psim should provide the interface */ | |
31 | #include "events.h" /* FIXME: psim should provide the interface */ | |
32 | ||
de46f45f | 33 | #include "bfd.h" |
3c25f8c7 AC |
34 | #include "gdb/callback.h" |
35 | #include "gdb/remote-sim.h" | |
de46f45f | 36 | |
c906108c SS |
37 | #ifdef HAVE_STDLIB_H |
38 | #include <stdlib.h> | |
39 | #endif | |
40 | ||
41 | #ifdef HAVE_UNISTD_H | |
42 | #include <unistd.h> | |
43 | #endif | |
44 | ||
45 | #ifdef HAVE_STRING_H | |
46 | #include <string.h> | |
47 | #else | |
48 | #ifdef HAVE_STRINGS_H | |
49 | #include <strings.h> | |
50 | #endif | |
51 | #endif | |
52 | ||
53 | #include <errno.h> | |
54 | ||
55 | #if !defined(O_NDELAY) || !defined(F_GETFL) || !defined(F_SETFL) | |
56 | #undef WITH_STDIO | |
57 | #define WITH_STDIO DO_USE_STDIO | |
58 | #endif | |
59 | ||
60 | ||
61 | extern char **environ; | |
62 | ||
63 | static psim *simulation = NULL; | |
64 | ||
65 | ||
66 | void | |
67 | sim_io_poll_quit (void) | |
68 | { | |
69 | /* nothing to do */ | |
70 | } | |
71 | ||
72 | void | |
73 | sim_io_printf_filtered(const char *msg, ...) | |
74 | { | |
75 | va_list ap; | |
76 | va_start(ap, msg); | |
77 | vprintf(msg, ap); | |
78 | va_end(ap); | |
79 | } | |
80 | ||
81 | void | |
82 | error (const char *msg, ...) | |
83 | { | |
84 | va_list ap; | |
85 | va_start(ap, msg); | |
86 | vprintf(msg, ap); | |
87 | printf("\n"); | |
88 | va_end(ap); | |
89 | ||
90 | /* any final clean up */ | |
91 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
92 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
93 | ||
94 | exit (1); | |
95 | } | |
96 | ||
97 | int | |
98 | sim_io_write_stdout(const char *buf, | |
99 | int sizeof_buf) | |
100 | { | |
101 | switch (CURRENT_STDIO) { | |
102 | case DO_USE_STDIO: | |
103 | { | |
104 | int i; | |
105 | for (i = 0; i < sizeof_buf; i++) { | |
106 | putchar(buf[i]); | |
107 | } | |
108 | return i; | |
109 | } | |
110 | break; | |
111 | case DONT_USE_STDIO: | |
112 | return write(1, buf, sizeof_buf); | |
113 | break; | |
114 | default: | |
115 | error("sim_io_write_stdout: invalid switch\n"); | |
116 | } | |
117 | return 0; | |
118 | } | |
119 | ||
120 | int | |
121 | sim_io_write_stderr(const char *buf, | |
122 | int sizeof_buf) | |
123 | { | |
124 | switch (CURRENT_STDIO) { | |
125 | case DO_USE_STDIO: | |
126 | { | |
127 | int i; | |
128 | for (i = 0; i < sizeof_buf; i++) { | |
129 | fputc(buf[i], stderr); | |
130 | } | |
131 | return i; | |
132 | } | |
133 | break; | |
134 | case DONT_USE_STDIO: | |
135 | return write(2, buf, sizeof_buf); | |
136 | break; | |
137 | default: | |
138 | error("sim_io_write_stdout: invalid switch\n"); | |
139 | } | |
140 | return 0; | |
141 | } | |
142 | ||
143 | int | |
144 | sim_io_read_stdin(char *buf, | |
145 | int sizeof_buf) | |
146 | { | |
147 | switch (CURRENT_STDIO) { | |
148 | case DO_USE_STDIO: | |
149 | if (sizeof_buf > 1) { | |
150 | if (fgets(buf, sizeof_buf, stdin) != NULL) | |
151 | return strlen(buf); | |
152 | } | |
153 | else if (sizeof_buf == 1) { | |
154 | char b[2]; | |
155 | if (fgets(b, sizeof(b), stdin) != NULL) { | |
156 | memcpy(buf, b, strlen(b)); | |
157 | return strlen(b); | |
158 | } | |
159 | } | |
160 | else if (sizeof_buf == 0) | |
161 | return 0; | |
162 | return sim_io_eof; | |
163 | break; | |
164 | case DONT_USE_STDIO: | |
165 | #if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL) | |
166 | { | |
167 | /* check for input */ | |
168 | int flags; | |
169 | int status; | |
170 | int nr_read; | |
171 | int result; | |
172 | /* get the old status */ | |
173 | flags = fcntl(0, F_GETFL, 0); | |
174 | if (flags == -1) { | |
175 | perror("sim_io_read_stdin"); | |
176 | return sim_io_eof; | |
177 | } | |
178 | /* temp, disable blocking IO */ | |
179 | status = fcntl(0, F_SETFL, flags | O_NDELAY); | |
180 | if (status == -1) { | |
181 | perror("sim_io_read_stdin"); | |
182 | return sim_io_eof; | |
183 | } | |
184 | /* try for input */ | |
185 | nr_read = read(0, buf, sizeof_buf); | |
186 | if (nr_read > 0 | |
187 | || (nr_read == 0 && sizeof_buf == 0)) | |
188 | result = nr_read; | |
189 | else if (nr_read == 0) | |
190 | result = sim_io_eof; | |
191 | else { /* nr_read < 0 */ | |
192 | if (errno == EAGAIN) | |
193 | result = sim_io_not_ready; | |
194 | else | |
195 | result = sim_io_eof; | |
196 | } | |
197 | /* return to regular vewing */ | |
198 | status = fcntl(0, F_SETFL, flags); | |
199 | if (status == -1) { | |
200 | perror("sim_io_read_stdin"); | |
201 | return sim_io_eof; | |
202 | } | |
203 | return result; | |
204 | } | |
205 | break; | |
206 | #endif | |
207 | default: | |
208 | error("sim_io_read_stdin: invalid switch\n"); | |
209 | break; | |
210 | } | |
211 | return 0; | |
212 | } | |
213 | ||
214 | void | |
215 | sim_io_flush_stdoutput(void) | |
216 | { | |
217 | switch (CURRENT_STDIO) { | |
218 | case DO_USE_STDIO: | |
219 | fflush (stdout); | |
220 | break; | |
221 | case DONT_USE_STDIO: | |
222 | break; | |
223 | default: | |
224 | error("sim_io_flush_stdoutput: invalid switch\n"); | |
225 | break; | |
226 | } | |
227 | } | |
228 | ||
de46f45f MG |
229 | void |
230 | sim_io_error (SIM_DESC sd, const char *msg, ...) | |
231 | { | |
232 | va_list ap; | |
233 | va_start(ap, msg); | |
234 | vprintf(msg, ap); | |
235 | printf("\n"); | |
236 | va_end(ap); | |
237 | ||
238 | /* any final clean up */ | |
239 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
240 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
241 | ||
242 | exit (1); | |
243 | } | |
244 | ||
c906108c SS |
245 | |
246 | void * | |
247 | zalloc(long size) | |
248 | { | |
249 | void *memory = malloc(size); | |
250 | if (memory == NULL) | |
5c884464 | 251 | error("zalloc failed\n"); |
c906108c SS |
252 | memset(memory, 0, size); |
253 | return memory; | |
254 | } | |
255 | ||
256 | void | |
257 | zfree(void *chunk) | |
258 | { | |
259 | free(chunk); | |
260 | } | |
261 | ||
262 | /* When a CNTRL-C occures, queue an event to shut down the simulation */ | |
263 | ||
264 | static RETSIGTYPE | |
265 | cntrl_c(int sig) | |
266 | { | |
267 | psim_stop (simulation); | |
268 | } | |
269 | ||
270 | ||
271 | int | |
272 | main(int argc, char **argv) | |
273 | { | |
274 | const char *name_of_file; | |
275 | char *arg_; | |
276 | psim_status status; | |
277 | device *root = psim_tree(); | |
278 | ||
279 | /* parse the arguments */ | |
280 | argv = psim_options(root, argv + 1); | |
281 | if (argv[0] == NULL) { | |
282 | if (ppc_trace[trace_opts]) { | |
283 | print_options (); | |
284 | return 0; | |
285 | } else { | |
6efef468 | 286 | psim_usage(0, 0); |
c906108c SS |
287 | } |
288 | } | |
289 | name_of_file = argv[0]; | |
290 | ||
291 | if (ppc_trace[trace_opts]) | |
292 | print_options (); | |
293 | ||
294 | /* create the simulator */ | |
295 | simulation = psim_create(name_of_file, root); | |
296 | ||
297 | /* fudge the environment so that _=prog-name */ | |
298 | arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1); | |
299 | strcpy(arg_, "_="); | |
300 | strcat(arg_, argv[0]); | |
301 | putenv(arg_); | |
302 | ||
303 | /* initialize it */ | |
304 | psim_init(simulation); | |
305 | psim_stack(simulation, argv, environ); | |
306 | ||
307 | { | |
308 | RETSIGTYPE (*prev) (); | |
309 | prev = signal(SIGINT, cntrl_c); | |
310 | psim_run(simulation); | |
311 | signal(SIGINT, prev); | |
312 | } | |
313 | ||
314 | /* any final clean up */ | |
315 | if (ppc_trace[trace_print_info]) | |
316 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
317 | ||
318 | /* why did we stop */ | |
319 | status = psim_get_status(simulation); | |
320 | switch (status.reason) { | |
321 | case was_continuing: | |
322 | error("psim: continuing while stoped!\n"); | |
323 | return 0; | |
324 | case was_trap: | |
325 | error("psim: no trap insn\n"); | |
326 | return 0; | |
327 | case was_exited: | |
328 | return status.signal; | |
329 | case was_signalled: | |
330 | printf ("%s: Caught signal %d at address 0x%lx\n", | |
331 | name_of_file, (int)status.signal, | |
332 | (long)status.program_counter); | |
333 | return status.signal; | |
334 | default: | |
335 | error("unknown halt condition\n"); | |
336 | return 0; | |
337 | } | |
338 | } |