Commit | Line | Data |
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4f35cbff MM |
1 | /* This file is part of the program psim. |
2 | ||
262faa54 | 3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> |
4f35cbff MM |
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> | |
4f35cbff | 23 | #include <stdio.h> |
2e913166 | 24 | #include <fcntl.h> |
4f35cbff MM |
25 | |
26 | #include "psim.h" | |
28816f45 | 27 | #include "options.h" |
262faa54 | 28 | #include "device.h" /* FIXME: psim should provide the interface */ |
4f35cbff | 29 | |
c494cadd MM |
30 | #ifdef HAVE_STDLIB_H |
31 | #include <stdlib.h> | |
32 | #endif | |
33 | ||
73c4941b MM |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
c494cadd MM |
38 | #ifdef HAVE_STRING_H |
39 | #include <string.h> | |
40 | #else | |
41 | #ifdef HAVE_STRINGS_H | |
42 | #include <strings.h> | |
43 | #endif | |
44 | #endif | |
45 | ||
2e913166 MM |
46 | #if !defined(O_NDELAY) || !defined(F_GETFL) || !defined(F_SETFL) |
47 | #undef WITH_STDIO | |
48 | #define WITH_STDIO DO_USE_STDIO | |
49 | #endif | |
50 | ||
51 | ||
4f35cbff | 52 | extern char **environ; |
4f35cbff | 53 | |
2e913166 MM |
54 | static psim *simulation = NULL; |
55 | ||
56 | ||
4f35cbff | 57 | void |
2e913166 | 58 | sim_io_printf_filtered(const char *msg, ...) |
4f35cbff MM |
59 | { |
60 | va_list ap; | |
61 | va_start(ap, msg); | |
62 | vprintf(msg, ap); | |
22ddef46 | 63 | va_end(ap); |
4f35cbff MM |
64 | } |
65 | ||
66 | void | |
67 | error (char *msg, ...) | |
68 | { | |
69 | va_list ap; | |
70 | va_start(ap, msg); | |
71 | vprintf(msg, ap); | |
22ddef46 | 72 | va_end(ap); |
2e913166 MM |
73 | |
74 | /* any final clean up */ | |
75 | if (ppc_trace[trace_print_info] && simulation != NULL) | |
76 | psim_print_info (simulation, ppc_trace[trace_print_info]); | |
77 | ||
4f35cbff MM |
78 | exit (1); |
79 | } | |
80 | ||
2e913166 MM |
81 | int |
82 | sim_io_write_stdout(const char *buf, | |
83 | int sizeof_buf) | |
84 | { | |
85 | switch (CURRENT_STDIO) { | |
86 | case DO_USE_STDIO: | |
87 | { | |
88 | int i; | |
89 | for (i = 0; i < sizeof_buf; i++) { | |
90 | putchar(buf[i]); | |
91 | } | |
92 | return i; | |
93 | } | |
94 | break; | |
95 | case DONT_USE_STDIO: | |
96 | return write(1, buf, sizeof_buf); | |
97 | break; | |
98 | default: | |
99 | error("sim_io_write_stdout: invalid switch\n"); | |
100 | } | |
101 | } | |
102 | ||
103 | int | |
104 | sim_io_write_stderr(const char *buf, | |
105 | int sizeof_buf) | |
106 | { | |
107 | switch (CURRENT_STDIO) { | |
108 | case DO_USE_STDIO: | |
109 | { | |
110 | int i; | |
111 | for (i = 0; i < sizeof_buf; i++) { | |
112 | fputc(buf[i], stderr); | |
113 | } | |
114 | return i; | |
115 | } | |
116 | break; | |
117 | case DONT_USE_STDIO: | |
118 | return write(2, buf, sizeof_buf); | |
119 | break; | |
120 | default: | |
121 | error("sim_io_write_stdout: invalid switch\n"); | |
122 | } | |
123 | } | |
124 | ||
125 | int | |
126 | sim_io_read_stdin(char *buf, | |
127 | int sizeof_buf) | |
128 | { | |
129 | switch (CURRENT_STDIO) { | |
130 | case DO_USE_STDIO: | |
131 | if (fgets(buf, sizeof_buf, stdin) == NULL) | |
132 | return sim_io_eof; | |
133 | else | |
134 | return strlen(buf); | |
135 | break; | |
136 | case DONT_USE_STDIO: | |
137 | { | |
138 | /* check for input */ | |
139 | int flags; | |
140 | int status; | |
141 | int nr_read; | |
142 | /* get the old status */ | |
143 | flags = fcntl(0, F_GETFL, 0); | |
144 | if (flags == -1) { | |
145 | perror("sim_io_read_stdin"); | |
146 | return sim_io_eof; | |
147 | } | |
148 | /* temp, disable blocking IO */ | |
149 | status = fcntl(0, F_SETFL, flags | O_NDELAY); | |
150 | if (status == -1) { | |
151 | perror("sim_io_read_stdin"); | |
152 | return sim_io_eof; | |
153 | } | |
154 | /* try for input */ | |
155 | nr_read = read(0, &buf, sizeof_buf); | |
156 | /* return to regular vewing */ | |
157 | status = fcntl(0, F_SETFL, flags); | |
158 | if (status == -1) { | |
159 | perror("sim_io_read_stdin"); | |
160 | return sim_io_eof; | |
161 | } | |
162 | if (status > 0) | |
163 | return 1; | |
164 | else if (status < 0) | |
165 | return sim_io_eof; | |
166 | else | |
167 | return sim_io_not_ready; | |
168 | } | |
169 | break; | |
170 | default: | |
171 | error("sim_io_read_stdin: invalid switch\n"); | |
172 | break; | |
173 | } | |
174 | } | |
175 | ||
176 | void | |
177 | sim_io_flush_stdoutput(void) | |
178 | { | |
179 | switch (CURRENT_STDIO) { | |
180 | case DO_USE_STDIO: | |
181 | fflush (stdout); | |
182 | break; | |
183 | case DONT_USE_STDIO: | |
184 | break; | |
185 | default: | |
186 | error("sim_io_flush_stdoutput: invalid switch\n"); | |
187 | break; | |
188 | } | |
189 | } | |
190 | ||
191 | ||
4f35cbff MM |
192 | void * |
193 | zalloc(long size) | |
194 | { | |
195 | void *memory = malloc(size); | |
196 | if (memory == NULL) | |
197 | error("zmalloc failed\n"); | |
1dc7c0ed | 198 | memset(memory, 0, size); |
4f35cbff MM |
199 | return memory; |
200 | } | |
201 | ||
202 | void | |
203 | zfree(void *chunk) | |
204 | { | |
205 | free(chunk); | |
206 | } | |
207 | ||
4f35cbff MM |
208 | int |
209 | main(int argc, char **argv) | |
210 | { | |
4f35cbff MM |
211 | const char *name_of_file; |
212 | char *arg_; | |
4f35cbff | 213 | psim_status status; |
262faa54 MM |
214 | device *root = psim_tree(); |
215 | ||
216 | /* parse the arguments */ | |
217 | argv = psim_options(root, argv + 1); | |
218 | if (argv[0] == NULL) | |
219 | psim_usage(0); | |
220 | name_of_file = argv[0]; | |
4f35cbff | 221 | |
28816f45 MM |
222 | if (ppc_trace[trace_opts]) |
223 | print_options (); | |
224 | ||
4f35cbff | 225 | /* create the simulator */ |
2e913166 | 226 | simulation = psim_create(name_of_file, root); |
4f35cbff MM |
227 | |
228 | /* fudge the environment so that _=prog-name */ | |
262faa54 | 229 | arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1); |
4f35cbff | 230 | strcpy(arg_, "_="); |
262faa54 | 231 | strcat(arg_, argv[0]); |
4f35cbff MM |
232 | putenv(arg_); |
233 | ||
234 | /* initialize it */ | |
2e913166 MM |
235 | psim_init(simulation); |
236 | psim_stack(simulation, argv, environ); | |
4f35cbff | 237 | |
2e913166 | 238 | psim_run(simulation); |
4f35cbff | 239 | |
22ddef46 | 240 | /* any final clean up */ |
262faa54 | 241 | if (ppc_trace[trace_print_info]) |
2e913166 | 242 | psim_print_info (simulation, ppc_trace[trace_print_info]); |
83d96c6e | 243 | |
4f35cbff | 244 | /* why did we stop */ |
2e913166 | 245 | status = psim_get_status(simulation); |
4f35cbff MM |
246 | switch (status.reason) { |
247 | case was_continuing: | |
248 | error("psim: continuing while stoped!\n"); | |
249 | return 0; | |
250 | case was_trap: | |
251 | error("psim: no trap insn\n"); | |
252 | return 0; | |
253 | case was_exited: | |
254 | return status.signal; | |
255 | case was_signalled: | |
22ddef46 | 256 | printf ("%s: Caught signal %d at address 0x%lx\n", |
a983c8f0 MM |
257 | name_of_file, (int)status.signal, |
258 | (long)status.program_counter); | |
4f35cbff MM |
259 | return status.signal; |
260 | default: | |
261 | error("unknown halt condition\n"); | |
262 | return 0; | |
263 | } | |
264 | } |