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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 | 36 | #include <stdlib.h> |
c906108c SS |
37 | #ifdef HAVE_UNISTD_H |
38 | #include <unistd.h> | |
39 | #endif | |
c906108c | 40 | #include <string.h> |
c906108c SS |
41 | #include <errno.h> |
42 | ||
43 | #if !defined(O_NDELAY) || !defined(F_GETFL) || !defined(F_SETFL) | |
44 | #undef WITH_STDIO | |
45 | #define WITH_STDIO DO_USE_STDIO | |
46 | #endif | |
47 | ||
48 | ||
49 | extern char **environ; | |
50 | ||
51 | static psim *simulation = NULL; | |
52 | ||
53 | ||
54 | void | |
55 | sim_io_poll_quit (void) | |
56 | { | |
57 | /* nothing to do */ | |
58 | } | |
59 | ||
60 | void | |
61 | sim_io_printf_filtered(const char *msg, ...) | |
62 | { | |
63 | va_list ap; | |
64 | va_start(ap, msg); | |
65 | vprintf(msg, ap); | |
66 | va_end(ap); | |
67 | } | |
68 | ||
69 | void | |
70 | error (const char *msg, ...) | |
71 | { | |
72 | va_list ap; | |
73 | va_start(ap, msg); | |
74 | vprintf(msg, ap); | |
75 | printf("\n"); | |
76 | va_end(ap); | |
77 | ||
78 | /* any final clean up */ | |
79 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
80 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
81 | ||
82 | exit (1); | |
83 | } | |
84 | ||
85 | int | |
86 | sim_io_write_stdout(const char *buf, | |
87 | int sizeof_buf) | |
88 | { | |
89 | switch (CURRENT_STDIO) { | |
90 | case DO_USE_STDIO: | |
91 | { | |
92 | int i; | |
93 | for (i = 0; i < sizeof_buf; i++) { | |
94 | putchar(buf[i]); | |
95 | } | |
96 | return i; | |
97 | } | |
98 | break; | |
99 | case DONT_USE_STDIO: | |
100 | return write(1, buf, sizeof_buf); | |
101 | break; | |
102 | default: | |
103 | error("sim_io_write_stdout: invalid switch\n"); | |
104 | } | |
105 | return 0; | |
106 | } | |
107 | ||
108 | int | |
109 | sim_io_write_stderr(const char *buf, | |
110 | int sizeof_buf) | |
111 | { | |
112 | switch (CURRENT_STDIO) { | |
113 | case DO_USE_STDIO: | |
114 | { | |
115 | int i; | |
116 | for (i = 0; i < sizeof_buf; i++) { | |
117 | fputc(buf[i], stderr); | |
118 | } | |
119 | return i; | |
120 | } | |
121 | break; | |
122 | case DONT_USE_STDIO: | |
123 | return write(2, buf, sizeof_buf); | |
124 | break; | |
125 | default: | |
126 | error("sim_io_write_stdout: invalid switch\n"); | |
127 | } | |
128 | return 0; | |
129 | } | |
130 | ||
131 | int | |
132 | sim_io_read_stdin(char *buf, | |
133 | int sizeof_buf) | |
134 | { | |
135 | switch (CURRENT_STDIO) { | |
136 | case DO_USE_STDIO: | |
137 | if (sizeof_buf > 1) { | |
138 | if (fgets(buf, sizeof_buf, stdin) != NULL) | |
139 | return strlen(buf); | |
140 | } | |
141 | else if (sizeof_buf == 1) { | |
142 | char b[2]; | |
143 | if (fgets(b, sizeof(b), stdin) != NULL) { | |
144 | memcpy(buf, b, strlen(b)); | |
145 | return strlen(b); | |
146 | } | |
147 | } | |
148 | else if (sizeof_buf == 0) | |
149 | return 0; | |
150 | return sim_io_eof; | |
151 | break; | |
152 | case DONT_USE_STDIO: | |
153 | #if defined(O_NDELAY) && defined(F_GETFL) && defined(F_SETFL) | |
154 | { | |
155 | /* check for input */ | |
156 | int flags; | |
157 | int status; | |
158 | int nr_read; | |
159 | int result; | |
160 | /* get the old status */ | |
161 | flags = fcntl(0, F_GETFL, 0); | |
162 | if (flags == -1) { | |
163 | perror("sim_io_read_stdin"); | |
164 | return sim_io_eof; | |
165 | } | |
166 | /* temp, disable blocking IO */ | |
167 | status = fcntl(0, F_SETFL, flags | O_NDELAY); | |
168 | if (status == -1) { | |
169 | perror("sim_io_read_stdin"); | |
170 | return sim_io_eof; | |
171 | } | |
172 | /* try for input */ | |
173 | nr_read = read(0, buf, sizeof_buf); | |
174 | if (nr_read > 0 | |
175 | || (nr_read == 0 && sizeof_buf == 0)) | |
176 | result = nr_read; | |
177 | else if (nr_read == 0) | |
178 | result = sim_io_eof; | |
179 | else { /* nr_read < 0 */ | |
180 | if (errno == EAGAIN) | |
181 | result = sim_io_not_ready; | |
182 | else | |
183 | result = sim_io_eof; | |
184 | } | |
185 | /* return to regular vewing */ | |
186 | status = fcntl(0, F_SETFL, flags); | |
187 | if (status == -1) { | |
188 | perror("sim_io_read_stdin"); | |
189 | return sim_io_eof; | |
190 | } | |
191 | return result; | |
192 | } | |
193 | break; | |
194 | #endif | |
195 | default: | |
196 | error("sim_io_read_stdin: invalid switch\n"); | |
197 | break; | |
198 | } | |
199 | return 0; | |
200 | } | |
201 | ||
202 | void | |
203 | sim_io_flush_stdoutput(void) | |
204 | { | |
205 | switch (CURRENT_STDIO) { | |
206 | case DO_USE_STDIO: | |
207 | fflush (stdout); | |
208 | break; | |
209 | case DONT_USE_STDIO: | |
210 | break; | |
211 | default: | |
212 | error("sim_io_flush_stdoutput: invalid switch\n"); | |
213 | break; | |
214 | } | |
215 | } | |
216 | ||
de46f45f MG |
217 | void |
218 | sim_io_error (SIM_DESC sd, const char *msg, ...) | |
219 | { | |
220 | va_list ap; | |
221 | va_start(ap, msg); | |
222 | vprintf(msg, ap); | |
223 | printf("\n"); | |
224 | va_end(ap); | |
225 | ||
226 | /* any final clean up */ | |
227 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
228 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
229 | ||
230 | exit (1); | |
231 | } | |
232 | ||
c906108c SS |
233 | |
234 | void * | |
235 | zalloc(long size) | |
236 | { | |
237 | void *memory = malloc(size); | |
238 | if (memory == NULL) | |
5c884464 | 239 | error("zalloc failed\n"); |
c906108c SS |
240 | memset(memory, 0, size); |
241 | return memory; | |
242 | } | |
243 | ||
c906108c SS |
244 | /* When a CNTRL-C occures, queue an event to shut down the simulation */ |
245 | ||
246 | static RETSIGTYPE | |
247 | cntrl_c(int sig) | |
248 | { | |
249 | psim_stop (simulation); | |
250 | } | |
251 | ||
252 | ||
253 | int | |
254 | main(int argc, char **argv) | |
255 | { | |
256 | const char *name_of_file; | |
257 | char *arg_; | |
258 | psim_status status; | |
259 | device *root = psim_tree(); | |
260 | ||
261 | /* parse the arguments */ | |
dea827fc | 262 | argv = psim_options (root, argv + 1, SIM_OPEN_STANDALONE); |
c906108c SS |
263 | if (argv[0] == NULL) { |
264 | if (ppc_trace[trace_opts]) { | |
265 | print_options (); | |
266 | return 0; | |
267 | } else { | |
dea827fc | 268 | psim_usage (0, 0, SIM_OPEN_STANDALONE); |
c906108c SS |
269 | } |
270 | } | |
271 | name_of_file = argv[0]; | |
272 | ||
273 | if (ppc_trace[trace_opts]) | |
274 | print_options (); | |
275 | ||
276 | /* create the simulator */ | |
277 | simulation = psim_create(name_of_file, root); | |
278 | ||
279 | /* fudge the environment so that _=prog-name */ | |
280 | arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1); | |
281 | strcpy(arg_, "_="); | |
282 | strcat(arg_, argv[0]); | |
283 | putenv(arg_); | |
284 | ||
285 | /* initialize it */ | |
286 | psim_init(simulation); | |
287 | psim_stack(simulation, argv, environ); | |
288 | ||
289 | { | |
290 | RETSIGTYPE (*prev) (); | |
291 | prev = signal(SIGINT, cntrl_c); | |
292 | psim_run(simulation); | |
293 | signal(SIGINT, prev); | |
294 | } | |
295 | ||
296 | /* any final clean up */ | |
297 | if (ppc_trace[trace_print_info]) | |
298 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
299 | ||
300 | /* why did we stop */ | |
301 | status = psim_get_status(simulation); | |
302 | switch (status.reason) { | |
303 | case was_continuing: | |
93cfa9cf | 304 | error("psim: continuing while stopped!\n"); |
c906108c SS |
305 | return 0; |
306 | case was_trap: | |
307 | error("psim: no trap insn\n"); | |
308 | return 0; | |
309 | case was_exited: | |
310 | return status.signal; | |
311 | case was_signalled: | |
312 | printf ("%s: Caught signal %d at address 0x%lx\n", | |
313 | name_of_file, (int)status.signal, | |
314 | (long)status.program_counter); | |
315 | return status.signal; | |
316 | default: | |
317 | error("unknown halt condition\n"); | |
318 | return 0; | |
319 | } | |
320 | } |