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1 /* The common simulator framework for GDB, the GNU Debugger.
2
3 Copyright 2002, 2007 Free Software Foundation, Inc.
4
5 Contributed by Andrew Cagney and Red Hat.
6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
23
24
25 #include "sim-main.h"
26 #include "sim-assert.h"
27 #include "bfd.h"
28
29
30 int current_host_byte_order;
31 int current_target_byte_order;
32 int current_stdio;
33
34 enum sim_alignments current_alignment;
35
36 #if defined (WITH_FLOATING_POINT)
37 int current_floating_point;
38 #endif
39
40
41
42 /* map a byte order onto a textual string */
43
44 static const char *
45 config_byte_order_to_a (int byte_order)
46 {
47 switch (byte_order)
48 {
49 case LITTLE_ENDIAN:
50 return "LITTLE_ENDIAN";
51 case BIG_ENDIAN:
52 return "BIG_ENDIAN";
53 case 0:
54 return "0";
55 }
56 return "UNKNOWN";
57 }
58
59
60 static const char *
61 config_stdio_to_a (int stdio)
62 {
63 switch (stdio)
64 {
65 case DONT_USE_STDIO:
66 return "DONT_USE_STDIO";
67 case DO_USE_STDIO:
68 return "DO_USE_STDIO";
69 case 0:
70 return "0";
71 }
72 return "UNKNOWN";
73 }
74
75
76 static const char *
77 config_environment_to_a (enum sim_environment environment)
78 {
79 switch (environment)
80 {
81 case ALL_ENVIRONMENT:
82 return "ALL_ENVIRONMENT";
83 case USER_ENVIRONMENT:
84 return "USER_ENVIRONMENT";
85 case VIRTUAL_ENVIRONMENT:
86 return "VIRTUAL_ENVIRONMENT";
87 case OPERATING_ENVIRONMENT:
88 return "OPERATING_ENVIRONMENT";
89 }
90 return "UNKNOWN";
91 }
92
93
94 static const char *
95 config_alignment_to_a (enum sim_alignments alignment)
96 {
97 switch (alignment)
98 {
99 case MIXED_ALIGNMENT:
100 return "MIXED_ALIGNMENT";
101 case NONSTRICT_ALIGNMENT:
102 return "NONSTRICT_ALIGNMENT";
103 case STRICT_ALIGNMENT:
104 return "STRICT_ALIGNMENT";
105 case FORCED_ALIGNMENT:
106 return "FORCED_ALIGNMENT";
107 }
108 return "UNKNOWN";
109 }
110
111
112 #if defined (WITH_FLOATING_POINT)
113 static const char *
114 config_floating_point_to_a (int floating_point)
115 {
116 switch (floating_point)
117 {
118 case SOFT_FLOATING_POINT:
119 return "SOFT_FLOATING_POINT";
120 case HARD_FLOATING_POINT:
121 return "HARD_FLOATING_POINT";
122 case 0:
123 return "0";
124 }
125 return "UNKNOWN";
126 }
127 #endif
128
129 /* Set the default environment, prior to parsing argv. */
130
131 void
132 sim_config_default (SIM_DESC sd)
133 {
134 /* Set the current environment to ALL_ENVIRONMENT to indicate none has been
135 selected yet. This is so that after parsing argv, we know whether the
136 environment was explicitly specified or not. */
137 STATE_ENVIRONMENT (sd) = ALL_ENVIRONMENT;
138 }
139
140 /* Complete and verify the simulation environment. */
141
142 SIM_RC
143 sim_config (SIM_DESC sd)
144 {
145 int prefered_target_byte_order;
146 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
147
148 /* extract all relevant information */
149 if (STATE_PROG_BFD (sd) == NULL
150 /* If we have a binary input file (presumably with specified
151 "--architecture"), it'll have no endianness. */
152 || (!bfd_little_endian (STATE_PROG_BFD (sd))
153 && !bfd_big_endian (STATE_PROG_BFD (sd))))
154 prefered_target_byte_order = 0;
155 else
156 prefered_target_byte_order = (bfd_little_endian(STATE_PROG_BFD (sd))
157 ? LITTLE_ENDIAN
158 : BIG_ENDIAN);
159
160 /* set the host byte order */
161 current_host_byte_order = 1;
162 if (*(char*)(&current_host_byte_order))
163 current_host_byte_order = LITTLE_ENDIAN;
164 else
165 current_host_byte_order = BIG_ENDIAN;
166
167 /* verify the host byte order */
168 if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order)
169 {
170 sim_io_eprintf (sd, "host (%s) and configured (%s) byte order in conflict",
171 config_byte_order_to_a (current_host_byte_order),
172 config_byte_order_to_a (CURRENT_HOST_BYTE_ORDER));
173 return SIM_RC_FAIL;
174 }
175
176
177 /* set the target byte order */
178 #if (WITH_TREE_PROPERTIES)
179 if (current_target_byte_order == 0)
180 current_target_byte_order
181 = (tree_find_boolean_property (root, "/options/little-endian?")
182 ? LITTLE_ENDIAN
183 : BIG_ENDIAN);
184 #endif
185 if (current_target_byte_order == 0
186 && prefered_target_byte_order != 0)
187 current_target_byte_order = prefered_target_byte_order;
188 if (current_target_byte_order == 0)
189 current_target_byte_order = WITH_TARGET_BYTE_ORDER;
190 if (current_target_byte_order == 0)
191 current_target_byte_order = WITH_DEFAULT_TARGET_BYTE_ORDER;
192
193 /* verify the target byte order */
194 if (CURRENT_TARGET_BYTE_ORDER == 0)
195 {
196 sim_io_eprintf (sd, "Target byte order unspecified\n");
197 return SIM_RC_FAIL;
198 }
199 if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order)
200 sim_io_eprintf (sd, "Target (%s) and configured (%s) byte order in conflict\n",
201 config_byte_order_to_a (current_target_byte_order),
202 config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER));
203 if (prefered_target_byte_order != 0
204 && CURRENT_TARGET_BYTE_ORDER != prefered_target_byte_order)
205 sim_io_eprintf (sd, "Target (%s) and specified (%s) byte order in conflict\n",
206 config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER),
207 config_byte_order_to_a (prefered_target_byte_order));
208
209
210 /* set the stdio */
211 if (current_stdio == 0)
212 current_stdio = WITH_STDIO;
213 if (current_stdio == 0)
214 current_stdio = DO_USE_STDIO;
215
216 /* verify the stdio */
217 if (CURRENT_STDIO == 0)
218 {
219 sim_io_eprintf (sd, "Target standard IO unspecified\n");
220 return SIM_RC_FAIL;
221 }
222 if (CURRENT_STDIO != current_stdio)
223 {
224 sim_io_eprintf (sd, "Target (%s) and configured (%s) standard IO in conflict\n",
225 config_stdio_to_a (CURRENT_STDIO),
226 config_stdio_to_a (current_stdio));
227 return SIM_RC_FAIL;
228 }
229
230
231 /* check the value of MSB */
232 if (WITH_TARGET_WORD_MSB != 0
233 && WITH_TARGET_WORD_MSB != (WITH_TARGET_WORD_BITSIZE - 1))
234 {
235 sim_io_eprintf (sd, "Target bitsize (%d) contradicts target most significant bit (%d)\n",
236 WITH_TARGET_WORD_BITSIZE, WITH_TARGET_WORD_MSB);
237 return SIM_RC_FAIL;
238 }
239
240
241 /* set the environment */
242 #if (WITH_TREE_PROPERTIES)
243 if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
244 {
245 const char *env =
246 tree_find_string_property(root, "/openprom/options/env");
247 STATE_ENVIRONMENT (sd) = ((strcmp(env, "user") == 0
248 || strcmp(env, "uea") == 0)
249 ? USER_ENVIRONMENT
250 : (strcmp(env, "virtual") == 0
251 || strcmp(env, "vea") == 0)
252 ? VIRTUAL_ENVIRONMENT
253 : (strcmp(env, "operating") == 0
254 || strcmp(env, "oea") == 0)
255 ? OPERATING_ENVIRONMENT
256 : ALL_ENVIRONMENT);
257 }
258 #endif
259 if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
260 STATE_ENVIRONMENT (sd) = DEFAULT_ENVIRONMENT;
261
262
263 /* set the alignment */
264 #if (WITH_TREE_PROPERTIES)
265 if (current_alignment == 0)
266 current_alignment =
267 (tree_find_boolean_property(root, "/openprom/options/strict-alignment?")
268 ? STRICT_ALIGNMENT
269 : NONSTRICT_ALIGNMENT);
270 #endif
271 if (current_alignment == 0)
272 current_alignment = WITH_ALIGNMENT;
273 if (current_alignment == 0)
274 current_alignment = WITH_DEFAULT_ALIGNMENT;
275
276 /* verify the alignment */
277 if (CURRENT_ALIGNMENT == 0)
278 {
279 sim_io_eprintf (sd, "Target alignment unspecified\n");
280 return SIM_RC_FAIL;
281 }
282 if (CURRENT_ALIGNMENT != current_alignment)
283 {
284 sim_io_eprintf (sd, "Target (%s) and configured (%s) alignment in conflict\n",
285 config_alignment_to_a (CURRENT_ALIGNMENT),
286 config_alignment_to_a (current_alignment));
287 return SIM_RC_FAIL;
288 }
289
290 #if defined (WITH_FLOATING_POINT)
291
292 /* set the floating point */
293 if (current_floating_point == 0)
294 current_floating_point = WITH_FLOATING_POINT;
295
296 /* verify the floating point */
297 if (CURRENT_FLOATING_POINT == 0)
298 {
299 sim_io_eprintf (sd, "Target floating-point unspecified\n");
300 return SIM_RC_FAIL;
301 }
302 if (CURRENT_FLOATING_POINT != current_floating_point)
303 {
304 sim_io_eprintf (sd, "Target (%s) and configured (%s) floating-point in conflict\n",
305 config_alignment_to_a (CURRENT_FLOATING_POINT),
306 config_alignment_to_a (current_floating_point));
307 return SIM_RC_FAIL;
308 }
309
310 #endif
311 return SIM_RC_OK;
312 }
313
314
315 void
316 print_sim_config (SIM_DESC sd)
317 {
318 #if defined (__GNUC__) && defined (__VERSION__)
319 sim_io_printf (sd, "Compiled by GCC %s on %s %s\n",
320 __VERSION__, __DATE__, __TIME__);
321 #else
322 sim_io_printf (sd, "Compiled on %s %s\n", __DATE__, __TIME__);
323 #endif
324
325 sim_io_printf (sd, "WITH_TARGET_BYTE_ORDER = %s\n",
326 config_byte_order_to_a (WITH_TARGET_BYTE_ORDER));
327
328 sim_io_printf (sd, "WITH_DEFAULT_TARGET_BYTE_ORDER = %s\n",
329 config_byte_order_to_a (WITH_DEFAULT_TARGET_BYTE_ORDER));
330
331 sim_io_printf (sd, "WITH_HOST_BYTE_ORDER = %s\n",
332 config_byte_order_to_a (WITH_HOST_BYTE_ORDER));
333
334 sim_io_printf (sd, "WITH_STDIO = %s\n",
335 config_stdio_to_a (WITH_STDIO));
336
337 sim_io_printf (sd, "WITH_TARGET_WORD_MSB = %d\n",
338 WITH_TARGET_WORD_MSB);
339
340 sim_io_printf (sd, "WITH_TARGET_WORD_BITSIZE = %d\n",
341 WITH_TARGET_WORD_BITSIZE);
342
343 sim_io_printf (sd, "WITH_TARGET_ADDRESS_BITSIZE = %d\n",
344 WITH_TARGET_ADDRESS_BITSIZE);
345
346 sim_io_printf (sd, "WITH_TARGET_CELL_BITSIZE = %d\n",
347 WITH_TARGET_CELL_BITSIZE);
348
349 sim_io_printf (sd, "WITH_TARGET_FLOATING_POINT_BITSIZE = %d\n",
350 WITH_TARGET_FLOATING_POINT_BITSIZE);
351
352 sim_io_printf (sd, "WITH_ENVIRONMENT = %s\n",
353 config_environment_to_a (WITH_ENVIRONMENT));
354
355 sim_io_printf (sd, "WITH_ALIGNMENT = %s\n",
356 config_alignment_to_a (WITH_ALIGNMENT));
357
358 #if defined (WITH_DEFAULT_ALIGNMENT)
359 sim_io_printf (sd, "WITH_DEFAULT_ALIGNMENT = %s\n",
360 config_alignment_to_a (WITH_DEFAULT_ALIGNMENT));
361 #endif
362
363 #if defined (WITH_XOR_ENDIAN)
364 sim_io_printf (sd, "WITH_XOR_ENDIAN = %d\n", WITH_XOR_ENDIAN);
365 #endif
366
367 #if defined (WITH_FLOATING_POINT)
368 sim_io_printf (sd, "WITH_FLOATING_POINT = %s\n",
369 config_floating_point_to_a (WITH_FLOATING_POINT));
370 #endif
371
372 #if defined (WITH_SMP)
373 sim_io_printf (sd, "WITH_SMP = %d\n", WITH_SMP);
374 #endif
375
376 #if defined (WITH_RESERVED_BITS)
377 sim_io_printf (sd, "WITH_RESERVED_BITS = %d\n", WITH_RESERVED_BITS);
378 #endif
379
380 #if defined (WITH_PROFILE)
381 sim_io_printf (sd, "WITH_PROFILE = %d\n", WITH_PROFILE);
382 #endif
383
384 }