Commit | Line | Data |
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ef230218 | 1 | /* BFD library support routines for the Renesas / SuperH SH architecture. |
ae51a426 | 2 | Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004 |
dc810e39 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Hacked by Steve Chamberlain of Cygnus Support. |
5 | ||
5177500f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
5177500f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
252b5132 | 12 | |
5177500f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
5177500f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
21 | |
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
f6f9408f | 25 | #include "../opcodes/sh-opc.h" |
252b5132 | 26 | |
38b1a46c NC |
27 | #define SH_NEXT &arch_info_struct[0] |
28 | #define SH2_NEXT &arch_info_struct[1] | |
5177500f NC |
29 | #define SH2E_NEXT &arch_info_struct[2] |
30 | #define SH_DSP_NEXT &arch_info_struct[3] | |
31 | #define SH3_NEXT &arch_info_struct[4] | |
f6f9408f JR |
32 | #define SH3_NOMMU_NEXT &arch_info_struct[5] |
33 | #define SH3_DSP_NEXT &arch_info_struct[6] | |
34 | #define SH3E_NEXT &arch_info_struct[7] | |
35 | #define SH4_NEXT &arch_info_struct[8] | |
36 | #define SH4A_NEXT &arch_info_struct[9] | |
37 | #define SH4AL_DSP_NEXT &arch_info_struct[10] | |
38 | #define SH4_NOFPU_NEXT &arch_info_struct[11] | |
39 | #define SH4_NOMMU_NOFPU_NEXT &arch_info_struct[12] | |
40 | #define SH4A_NOFPU_NEXT &arch_info_struct[13] | |
fbca6ad9 | 41 | #define SH64_NEXT NULL |
252b5132 | 42 | |
71f6b586 | 43 | static const bfd_arch_info_type arch_info_struct[] = |
252b5132 | 44 | { |
d4845d57 JR |
45 | { |
46 | 32, /* 32 bits in a word */ | |
47 | 32, /* 32 bits in an address */ | |
48 | 8, /* 8 bits in a byte */ | |
49 | bfd_arch_sh, | |
50 | bfd_mach_sh2, | |
51 | "sh", /* arch_name */ | |
52 | "sh2", /* printable name */ | |
53 | 1, | |
b34976b6 | 54 | FALSE, /* not the default */ |
d4845d57 | 55 | bfd_default_compatible, |
a44d7f9c | 56 | bfd_default_scan, |
d4845d57 JR |
57 | SH2_NEXT |
58 | }, | |
5177500f NC |
59 | { |
60 | 32, /* 32 bits in a word */ | |
61 | 32, /* 32 bits in an address */ | |
62 | 8, /* 8 bits in a byte */ | |
63 | bfd_arch_sh, | |
64 | bfd_mach_sh2e, | |
65 | "sh", /* arch_name */ | |
66 | "sh2e", /* printable name */ | |
67 | 1, | |
68 | FALSE, /* not the default */ | |
69 | bfd_default_compatible, | |
70 | bfd_default_scan, | |
71 | SH2E_NEXT | |
72 | }, | |
d4845d57 JR |
73 | { |
74 | 32, /* 32 bits in a word */ | |
75 | 32, /* 32 bits in an address */ | |
76 | 8, /* 8 bits in a byte */ | |
77 | bfd_arch_sh, | |
78 | bfd_mach_sh_dsp, | |
79 | "sh", /* arch_name */ | |
80 | "sh-dsp", /* printable name */ | |
81 | 1, | |
b34976b6 | 82 | FALSE, /* not the default */ |
d4845d57 | 83 | bfd_default_compatible, |
a44d7f9c | 84 | bfd_default_scan, |
d4845d57 JR |
85 | SH_DSP_NEXT |
86 | }, | |
252b5132 RH |
87 | { |
88 | 32, /* 32 bits in a word */ | |
89 | 32, /* 32 bits in an address */ | |
90 | 8, /* 8 bits in a byte */ | |
91 | bfd_arch_sh, | |
92 | bfd_mach_sh3, | |
93 | "sh", /* arch_name */ | |
94 | "sh3", /* printable name */ | |
95 | 1, | |
b34976b6 | 96 | FALSE, /* not the default */ |
252b5132 | 97 | bfd_default_compatible, |
a44d7f9c | 98 | bfd_default_scan, |
252b5132 RH |
99 | SH3_NEXT |
100 | }, | |
f6f9408f JR |
101 | { |
102 | 32, /* 32 bits in a word */ | |
103 | 32, /* 32 bits in an address */ | |
104 | 8, /* 8 bits in a byte */ | |
105 | bfd_arch_sh, | |
106 | bfd_mach_sh3_nommu, | |
107 | "sh", /* arch_name */ | |
108 | "sh3-nommu", /* printable name */ | |
109 | 1, | |
110 | FALSE, /* not the default */ | |
111 | bfd_default_compatible, | |
112 | bfd_default_scan, | |
113 | SH3_NOMMU_NEXT | |
114 | }, | |
d4845d57 JR |
115 | { |
116 | 32, /* 32 bits in a word */ | |
117 | 32, /* 32 bits in an address */ | |
118 | 8, /* 8 bits in a byte */ | |
119 | bfd_arch_sh, | |
120 | bfd_mach_sh3_dsp, | |
121 | "sh", /* arch_name */ | |
122 | "sh3-dsp", /* printable name */ | |
123 | 1, | |
b34976b6 | 124 | FALSE, /* not the default */ |
d4845d57 | 125 | bfd_default_compatible, |
a44d7f9c | 126 | bfd_default_scan, |
d4845d57 JR |
127 | SH3_DSP_NEXT |
128 | }, | |
252b5132 RH |
129 | { |
130 | 32, /* 32 bits in a word */ | |
131 | 32, /* 32 bits in an address */ | |
132 | 8, /* 8 bits in a byte */ | |
133 | bfd_arch_sh, | |
134 | bfd_mach_sh3e, | |
135 | "sh", /* arch_name */ | |
136 | "sh3e", /* printable name */ | |
137 | 1, | |
b34976b6 | 138 | FALSE, /* not the default */ |
252b5132 | 139 | bfd_default_compatible, |
a44d7f9c | 140 | bfd_default_scan, |
252b5132 RH |
141 | SH3E_NEXT |
142 | }, | |
d4845d57 JR |
143 | { |
144 | 32, /* 32 bits in a word */ | |
145 | 32, /* 32 bits in an address */ | |
146 | 8, /* 8 bits in a byte */ | |
147 | bfd_arch_sh, | |
148 | bfd_mach_sh4, | |
149 | "sh", /* arch_name */ | |
150 | "sh4", /* printable name */ | |
151 | 1, | |
b34976b6 | 152 | FALSE, /* not the default */ |
d4845d57 | 153 | bfd_default_compatible, |
a44d7f9c | 154 | bfd_default_scan, |
d4845d57 JR |
155 | SH4_NEXT |
156 | }, | |
af9ba621 CV |
157 | { |
158 | 32, /* 32 bits in a word */ | |
159 | 32, /* 32 bits in an address */ | |
160 | 8, /* 8 bits in a byte */ | |
161 | bfd_arch_sh, | |
162 | bfd_mach_sh4a, | |
163 | "sh", /* arch_name */ | |
164 | "sh4a", /* printable name */ | |
165 | 1, | |
166 | FALSE, /* not the default */ | |
167 | bfd_default_compatible, | |
168 | bfd_default_scan, | |
169 | SH4A_NEXT | |
170 | }, | |
171 | { | |
172 | 32, /* 32 bits in a word */ | |
173 | 32, /* 32 bits in an address */ | |
174 | 8, /* 8 bits in a byte */ | |
175 | bfd_arch_sh, | |
176 | bfd_mach_sh4al_dsp, | |
177 | "sh", /* arch_name */ | |
178 | "sh4al-dsp", /* printable name */ | |
179 | 1, | |
180 | FALSE, /* not the default */ | |
181 | bfd_default_compatible, | |
182 | bfd_default_scan, | |
183 | SH4AL_DSP_NEXT | |
184 | }, | |
185 | { | |
186 | 32, /* 32 bits in a word */ | |
187 | 32, /* 32 bits in an address */ | |
188 | 8, /* 8 bits in a byte */ | |
189 | bfd_arch_sh, | |
190 | bfd_mach_sh4_nofpu, | |
191 | "sh", /* arch_name */ | |
192 | "sh4-nofpu", /* printable name */ | |
193 | 1, | |
194 | FALSE, /* not the default */ | |
195 | bfd_default_compatible, | |
196 | bfd_default_scan, | |
197 | SH4_NOFPU_NEXT | |
198 | }, | |
ae51a426 JR |
199 | { |
200 | 32, /* 32 bits in a word */ | |
201 | 32, /* 32 bits in an address */ | |
202 | 8, /* 8 bits in a byte */ | |
203 | bfd_arch_sh, | |
204 | bfd_mach_sh4_nommu_nofpu, | |
205 | "sh", /* arch_name */ | |
206 | "sh4-nommu-nofpu", /* printable name */ | |
207 | 1, | |
208 | FALSE, /* not the default */ | |
209 | bfd_default_compatible, | |
210 | bfd_default_scan, | |
211 | SH4_NOMMU_NOFPU_NEXT | |
212 | }, | |
af9ba621 CV |
213 | { |
214 | 32, /* 32 bits in a word */ | |
215 | 32, /* 32 bits in an address */ | |
216 | 8, /* 8 bits in a byte */ | |
217 | bfd_arch_sh, | |
218 | bfd_mach_sh4a_nofpu, | |
219 | "sh", /* arch_name */ | |
220 | "sh4a-nofpu", /* printable name */ | |
221 | 1, | |
222 | FALSE, /* not the default */ | |
223 | bfd_default_compatible, | |
224 | bfd_default_scan, | |
225 | SH4A_NOFPU_NEXT | |
226 | }, | |
fbca6ad9 AO |
227 | { |
228 | 64, /* 64 bits in a word */ | |
229 | 64, /* 64 bits in an address */ | |
230 | 8, /* 8 bits in a byte */ | |
231 | bfd_arch_sh, | |
232 | bfd_mach_sh5, | |
233 | "sh", /* arch_name */ | |
234 | "sh5", /* printable name */ | |
235 | 1, | |
b34976b6 | 236 | FALSE, /* not the default */ |
fbca6ad9 | 237 | bfd_default_compatible, |
a44d7f9c | 238 | bfd_default_scan, |
fbca6ad9 AO |
239 | SH64_NEXT |
240 | }, | |
252b5132 RH |
241 | }; |
242 | ||
243 | const bfd_arch_info_type bfd_sh_arch = | |
244 | { | |
245 | 32, /* 32 bits in a word */ | |
246 | 32, /* 32 bits in an address */ | |
247 | 8, /* 8 bits in a byte */ | |
248 | bfd_arch_sh, | |
249 | bfd_mach_sh, | |
250 | "sh", /* arch_name */ | |
251 | "sh", /* printable name */ | |
252 | 1, | |
b34976b6 | 253 | TRUE, /* the default machine */ |
252b5132 | 254 | bfd_default_compatible, |
a44d7f9c | 255 | bfd_default_scan, |
252b5132 RH |
256 | SH_NEXT |
257 | }; | |
f6f9408f JR |
258 | |
259 | ||
260 | /* This table defines the mappings from the BFD internal numbering | |
261 | system to the opcodes internal flags system. | |
262 | It is used by the functions defined below. | |
263 | The prototypes for these SH specific functions are found in | |
264 | sh-opc.h . */ | |
265 | ||
266 | static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] = | |
267 | { | |
268 | { bfd_mach_sh, arch_sh1, arch_sh1_up }, | |
269 | { bfd_mach_sh2, arch_sh2, arch_sh2_up }, | |
270 | { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up }, | |
271 | { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up }, | |
272 | { bfd_mach_sh3, arch_sh3, arch_sh3_up }, | |
273 | { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up }, | |
274 | { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up }, | |
275 | { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up }, | |
276 | { bfd_mach_sh4, arch_sh4, arch_sh4_up }, | |
277 | { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up }, | |
278 | { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up }, | |
279 | { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofp_up }, | |
280 | { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up }, | |
281 | { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofp_up }, | |
282 | { 0, 0, 0 } /* Terminator. */ | |
283 | }; | |
284 | ||
285 | ||
286 | /* Convert a BFD mach number into the right opcodes arch flags | |
287 | using the table above. */ | |
288 | ||
289 | unsigned int | |
290 | sh_get_arch_from_bfd_mach (unsigned long mach) | |
291 | { | |
292 | int i = 0; | |
293 | ||
294 | while (bfd_to_arch_table[i].bfd_mach != 0) | |
295 | if (bfd_to_arch_table[i].bfd_mach == mach) | |
296 | return bfd_to_arch_table[i].arch; | |
297 | else | |
298 | i++; | |
299 | ||
300 | /* mach not found. */ | |
301 | BFD_FAIL(); | |
302 | ||
303 | return SH_ARCH_UNKNOWN_ARCH; | |
304 | } | |
305 | ||
306 | ||
307 | /* Convert a BFD mach number into a set of opcodes arch flags | |
308 | describing all the compatible architectures (i.e. arch_up) | |
309 | using the table above. */ | |
310 | ||
311 | unsigned int | |
312 | sh_get_arch_up_from_bfd_mach (unsigned long mach) | |
313 | { | |
314 | int i = 0; | |
315 | ||
316 | while (bfd_to_arch_table[i].bfd_mach != 0) | |
317 | if (bfd_to_arch_table[i].bfd_mach == mach) | |
318 | return bfd_to_arch_table[i].arch_up; | |
319 | else | |
320 | i++; | |
321 | ||
322 | /* mach not found. */ | |
323 | BFD_FAIL(); | |
324 | ||
325 | return SH_ARCH_UNKNOWN_ARCH; | |
326 | } | |
327 | ||
328 | ||
329 | /* Convert an arbitary arch_set - not necessarily corresponding | |
330 | directly to anything in the table above - to the most generic | |
331 | architecture which supports all the required features, and | |
332 | return the corresponding BFD mach. */ | |
333 | ||
334 | unsigned long | |
335 | sh_get_bfd_mach_from_arch_set (unsigned int arch_set) | |
336 | { | |
337 | unsigned long result = 0; | |
338 | unsigned int best = ~arch_set; | |
339 | unsigned int co_mask = ~0; | |
340 | int i = 0; | |
341 | ||
342 | /* If arch_set permits variants with no coprocessor then do not allow | |
343 | the other irrelevant co-processor bits to influence the choice: | |
344 | e.g. if dsp is disallowed by arch_set, then the algorithm would | |
345 | prefer fpu variants over nofpu variants because they also disallow | |
346 | dsp - even though the nofpu would be the most correct choice. | |
347 | This assumes that EVERY fpu/dsp variant has a no-coprocessor | |
348 | counter-part, or their non-fpu/dsp instructions do not have the | |
349 | no co-processor bit set. */ | |
350 | if (arch_set & arch_sh_no_co) | |
351 | co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp); | |
352 | ||
353 | while (bfd_to_arch_table[i].bfd_mach != 0) | |
354 | { | |
355 | unsigned int try = bfd_to_arch_table[i].arch_up & co_mask; | |
356 | ||
357 | /* Conceptually: Find the architecture with the least number | |
358 | of extra features or, if they have the same number, then | |
359 | the greatest number of required features. Disregard | |
360 | architectures where the required features alone do | |
361 | not describe a valid architecture. */ | |
362 | if (((try & ~arch_set) < (best & ~arch_set) | |
363 | || ((try & ~arch_set) == (best & ~arch_set) | |
364 | && (~try & arch_set) < (~best & arch_set))) | |
365 | && SH_MERGE_ARCH_SET_VALID (try, arch_set)) | |
366 | { | |
367 | result = bfd_to_arch_table[i].bfd_mach; | |
368 | best = try; | |
369 | } | |
370 | ||
371 | i++; | |
372 | } | |
373 | ||
374 | /* This might happen if a new variant is added to sh-opc.h | |
375 | but no corresponding entry is added to the table above. */ | |
376 | BFD_ASSERT (result != 0); | |
377 | ||
378 | return result; | |
379 | } | |
380 | ||
381 | ||
382 | /* Merge the architecture type of two BFD files, such that the | |
383 | resultant architecture supports all the features required | |
384 | by the two input BFDs. | |
385 | If the input BFDs are multually incompatible - i.e. one uses | |
386 | DSP while the other uses FPU - or there is no known architecture | |
387 | that fits the requirements then an error is emitted. */ | |
388 | ||
389 | bfd_boolean | |
390 | sh_merge_bfd_arch (bfd *ibfd, bfd *obfd) | |
391 | { | |
392 | unsigned int old_arch, new_arch, merged_arch; | |
393 | ||
394 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) | |
395 | return FALSE; | |
396 | ||
397 | old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd)); | |
398 | new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd)); | |
399 | ||
400 | merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch); | |
401 | ||
402 | if (!SH_VALID_CO_ARCH_SET (merged_arch)) | |
403 | { | |
404 | (*_bfd_error_handler) | |
405 | ("%s: uses %s instructions while previous modules use %s instructions", | |
406 | bfd_archive_filename (ibfd), | |
407 | SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point", | |
408 | SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp"); | |
409 | bfd_set_error (bfd_error_bad_value); | |
410 | return FALSE; | |
411 | } | |
412 | else if (!SH_VALID_ARCH_SET (merged_arch)) | |
413 | { | |
414 | (*_bfd_error_handler) | |
415 | ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n", | |
416 | bfd_printable_name (obfd), | |
417 | bfd_printable_name (ibfd)); | |
418 | bfd_set_error (bfd_error_bad_value); | |
419 | return FALSE; | |
420 | } | |
421 | ||
422 | bfd_default_set_arch_mach (obfd, bfd_arch_sh, | |
423 | sh_get_bfd_mach_from_arch_set (merged_arch)); | |
424 | ||
425 | return TRUE; | |
426 | } |