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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #include <stdarg.h> | |
22 | #include <stdio.h> | |
23 | #include <fcntl.h> | |
24 | ||
25 | #include <signal.h> | |
26 | ||
27 | #include "psim.h" | |
28 | #include "options.h" | |
29 | #include "device.h" /* FIXME: psim should provide the interface */ | |
30 | #include "events.h" /* FIXME: psim should provide the interface */ | |
31 | ||
de46f45f | 32 | #include "bfd.h" |
3c25f8c7 AC |
33 | #include "gdb/callback.h" |
34 | #include "gdb/remote-sim.h" | |
de46f45f | 35 | |
c906108c SS |
36 | #ifdef HAVE_STDLIB_H |
37 | #include <stdlib.h> | |
38 | #endif | |
39 | ||
40 | #ifdef HAVE_UNISTD_H | |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
44 | #ifdef HAVE_STRING_H | |
45 | #include <string.h> | |
46 | #else | |
47 | #ifdef HAVE_STRINGS_H | |
48 | #include <strings.h> | |
49 | #endif | |
50 | #endif | |
51 | ||
52 | #include <errno.h> | |
53 | ||
54 | #if !defined(O_NDELAY) || !defined(F_GETFL) || !defined(F_SETFL) | |
55 | #undef WITH_STDIO | |
56 | #define WITH_STDIO DO_USE_STDIO | |
57 | #endif | |
58 | ||
59 | ||
60 | extern char **environ; | |
61 | ||
62 | static psim *simulation = NULL; | |
63 | ||
64 | ||
65 | void | |
66 | sim_io_poll_quit (void) | |
67 | { | |
68 | /* nothing to do */ | |
69 | } | |
70 | ||
71 | void | |
72 | sim_io_printf_filtered(const char *msg, ...) | |
73 | { | |
74 | va_list ap; | |
75 | va_start(ap, msg); | |
76 | vprintf(msg, ap); | |
77 | va_end(ap); | |
78 | } | |
79 | ||
80 | void | |
81 | error (const char *msg, ...) | |
82 | { | |
83 | va_list ap; | |
84 | va_start(ap, msg); | |
85 | vprintf(msg, ap); | |
86 | printf("\n"); | |
87 | va_end(ap); | |
88 | ||
89 | /* any final clean up */ | |
90 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
91 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
92 | ||
93 | exit (1); | |
94 | } | |
95 | ||
96 | int | |
97 | sim_io_write_stdout(const char *buf, | |
98 | int sizeof_buf) | |
99 | { | |
100 | switch (CURRENT_STDIO) { | |
101 | case DO_USE_STDIO: | |
102 | { | |
103 | int i; | |
104 | for (i = 0; i < sizeof_buf; i++) { | |
105 | putchar(buf[i]); | |
106 | } | |
107 | return i; | |
108 | } | |
109 | break; | |
110 | case DONT_USE_STDIO: | |
111 | return write(1, buf, sizeof_buf); | |
112 | break; | |
113 | default: | |
114 | error("sim_io_write_stdout: invalid switch\n"); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
119 | int | |
120 | sim_io_write_stderr(const char *buf, | |
121 | int sizeof_buf) | |
122 | { | |
123 | switch (CURRENT_STDIO) { | |
124 | case DO_USE_STDIO: | |
125 | { | |
126 | int i; | |
127 | for (i = 0; i < sizeof_buf; i++) { | |
128 | fputc(buf[i], stderr); | |
129 | } | |
130 | return i; | |
131 | } | |
132 | break; | |
133 | case DONT_USE_STDIO: | |
134 | return write(2, buf, sizeof_buf); | |
135 | break; | |
136 | default: | |
137 | error("sim_io_write_stdout: invalid switch\n"); | |
138 | } | |
139 | return 0; | |
140 | } | |
141 | ||
142 | int | |
143 | sim_io_read_stdin(char *buf, | |
144 | int sizeof_buf) | |
145 | { | |
146 | switch (CURRENT_STDIO) { | |
147 | case DO_USE_STDIO: | |
148 | if (sizeof_buf > 1) { | |
149 | if (fgets(buf, sizeof_buf, stdin) != NULL) | |
150 | return strlen(buf); | |
151 | } | |
152 | else if (sizeof_buf == 1) { | |
153 | char b[2]; | |
154 | if (fgets(b, sizeof(b), stdin) != NULL) { | |
155 | memcpy(buf, b, strlen(b)); | |
156 | return strlen(b); | |
157 | } | |
158 | } | |
159 | else if (sizeof_buf == 0) | |
160 | return 0; | |
161 | return sim_io_eof; | |
162 | break; | |
163 | case DONT_USE_STDIO: | |
164 | #if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL) | |
165 | { | |
166 | /* check for input */ | |
167 | int flags; | |
168 | int status; | |
169 | int nr_read; | |
170 | int result; | |
171 | /* get the old status */ | |
172 | flags = fcntl(0, F_GETFL, 0); | |
173 | if (flags == -1) { | |
174 | perror("sim_io_read_stdin"); | |
175 | return sim_io_eof; | |
176 | } | |
177 | /* temp, disable blocking IO */ | |
178 | status = fcntl(0, F_SETFL, flags | O_NDELAY); | |
179 | if (status == -1) { | |
180 | perror("sim_io_read_stdin"); | |
181 | return sim_io_eof; | |
182 | } | |
183 | /* try for input */ | |
184 | nr_read = read(0, buf, sizeof_buf); | |
185 | if (nr_read > 0 | |
186 | || (nr_read == 0 && sizeof_buf == 0)) | |
187 | result = nr_read; | |
188 | else if (nr_read == 0) | |
189 | result = sim_io_eof; | |
190 | else { /* nr_read < 0 */ | |
191 | if (errno == EAGAIN) | |
192 | result = sim_io_not_ready; | |
193 | else | |
194 | result = sim_io_eof; | |
195 | } | |
196 | /* return to regular vewing */ | |
197 | status = fcntl(0, F_SETFL, flags); | |
198 | if (status == -1) { | |
199 | perror("sim_io_read_stdin"); | |
200 | return sim_io_eof; | |
201 | } | |
202 | return result; | |
203 | } | |
204 | break; | |
205 | #endif | |
206 | default: | |
207 | error("sim_io_read_stdin: invalid switch\n"); | |
208 | break; | |
209 | } | |
210 | return 0; | |
211 | } | |
212 | ||
213 | void | |
214 | sim_io_flush_stdoutput(void) | |
215 | { | |
216 | switch (CURRENT_STDIO) { | |
217 | case DO_USE_STDIO: | |
218 | fflush (stdout); | |
219 | break; | |
220 | case DONT_USE_STDIO: | |
221 | break; | |
222 | default: | |
223 | error("sim_io_flush_stdoutput: invalid switch\n"); | |
224 | break; | |
225 | } | |
226 | } | |
227 | ||
de46f45f MG |
228 | void |
229 | sim_io_error (SIM_DESC sd, const char *msg, ...) | |
230 | { | |
231 | va_list ap; | |
232 | va_start(ap, msg); | |
233 | vprintf(msg, ap); | |
234 | printf("\n"); | |
235 | va_end(ap); | |
236 | ||
237 | /* any final clean up */ | |
238 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
239 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
240 | ||
241 | exit (1); | |
242 | } | |
243 | ||
c906108c SS |
244 | |
245 | void * | |
246 | zalloc(long size) | |
247 | { | |
248 | void *memory = malloc(size); | |
249 | if (memory == NULL) | |
5c884464 | 250 | error("zalloc failed\n"); |
c906108c SS |
251 | memset(memory, 0, size); |
252 | return memory; | |
253 | } | |
254 | ||
c906108c SS |
255 | /* When a CNTRL-C occures, queue an event to shut down the simulation */ |
256 | ||
257 | static RETSIGTYPE | |
258 | cntrl_c(int sig) | |
259 | { | |
260 | psim_stop (simulation); | |
261 | } | |
262 | ||
263 | ||
264 | int | |
265 | main(int argc, char **argv) | |
266 | { | |
267 | const char *name_of_file; | |
268 | char *arg_; | |
269 | psim_status status; | |
270 | device *root = psim_tree(); | |
271 | ||
272 | /* parse the arguments */ | |
273 | argv = psim_options(root, argv + 1); | |
274 | if (argv[0] == NULL) { | |
275 | if (ppc_trace[trace_opts]) { | |
276 | print_options (); | |
277 | return 0; | |
278 | } else { | |
6efef468 | 279 | psim_usage(0, 0); |
c906108c SS |
280 | } |
281 | } | |
282 | name_of_file = argv[0]; | |
283 | ||
284 | if (ppc_trace[trace_opts]) | |
285 | print_options (); | |
286 | ||
287 | /* create the simulator */ | |
288 | simulation = psim_create(name_of_file, root); | |
289 | ||
290 | /* fudge the environment so that _=prog-name */ | |
291 | arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1); | |
292 | strcpy(arg_, "_="); | |
293 | strcat(arg_, argv[0]); | |
294 | putenv(arg_); | |
295 | ||
296 | /* initialize it */ | |
297 | psim_init(simulation); | |
298 | psim_stack(simulation, argv, environ); | |
299 | ||
300 | { | |
301 | RETSIGTYPE (*prev) (); | |
302 | prev = signal(SIGINT, cntrl_c); | |
303 | psim_run(simulation); | |
304 | signal(SIGINT, prev); | |
305 | } | |
306 | ||
307 | /* any final clean up */ | |
308 | if (ppc_trace[trace_print_info]) | |
309 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
310 | ||
311 | /* why did we stop */ | |
312 | status = psim_get_status(simulation); | |
313 | switch (status.reason) { | |
314 | case was_continuing: | |
93cfa9cf | 315 | error("psim: continuing while stopped!\n"); |
c906108c SS |
316 | return 0; |
317 | case was_trap: | |
318 | error("psim: no trap insn\n"); | |
319 | return 0; | |
320 | case was_exited: | |
321 | return status.signal; | |
322 | case was_signalled: | |
323 | printf ("%s: Caught signal %d at address 0x%lx\n", | |
324 | name_of_file, (int)status.signal, | |
325 | (long)status.program_counter); | |
326 | return status.signal; | |
327 | default: | |
328 | error("unknown halt condition\n"); | |
329 | return 0; | |
330 | } | |
331 | } |