1 /* BFD library support routines for the Renesas / SuperH SH architecture.
2 Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
3 2007 Free Software Foundation, Inc.
4 Hacked by Steve Chamberlain of Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 #include "../opcodes/sh-opc.h"
27 #define SH_NEXT arch_info_struct + 0
28 #define SH2_NEXT arch_info_struct + 1
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
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
41 #define SH2A_NEXT arch_info_struct + 14
42 #define SH2A_NOFPU_NEXT arch_info_struct + 15
43 #define SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT arch_info_struct + 16
44 #define SH2A_NOFPU_OR_SH3_NOMMU_NEXT arch_info_struct + 17
45 #define SH2A_OR_SH4_NEXT arch_info_struct + 18
46 #define SH2A_OR_SH3E_NEXT arch_info_struct + 19
47 #define SH64_NEXT NULL
49 static const bfd_arch_info_type arch_info_struct[] =
52 32, /* 32 bits in a word. */
53 32, /* 32 bits in an address. */
54 8, /* 8 bits in a byte. */
57 "sh", /* Architecture name. */
58 "sh2", /* Machine name. */
60 FALSE, /* Not the default. */
61 bfd_default_compatible,
66 32, /* 32 bits in a word. */
67 32, /* 32 bits in an address. */
68 8, /* 8 bits in a byte. */
71 "sh", /* Architecture name. */
72 "sh2e", /* Machine name. */
74 FALSE, /* Not the default. */
75 bfd_default_compatible,
80 32, /* 32 bits in a word. */
81 32, /* 32 bits in an address. */
82 8, /* 8 bits in a byte. */
85 "sh", /* Architecture name. */
86 "sh-dsp", /* Machine name. */
88 FALSE, /* Not the default. */
89 bfd_default_compatible,
94 32, /* 32 bits in a word. */
95 32, /* 32 bits in an address. */
96 8, /* 8 bits in a byte. */
99 "sh", /* Architecture name. */
100 "sh3", /* Machine name. */
102 FALSE, /* Not the default. */
103 bfd_default_compatible,
108 32, /* 32 bits in a word. */
109 32, /* 32 bits in an address. */
110 8, /* 8 bits in a byte. */
113 "sh", /* Architecture name. */
114 "sh3-nommu", /* Machine name. */
116 FALSE, /* Not the default. */
117 bfd_default_compatible,
122 32, /* 32 bits in a word. */
123 32, /* 32 bits in an address. */
124 8, /* 8 bits in a byte. */
127 "sh", /* Architecture name. */
128 "sh3-dsp", /* Machine name. */
130 FALSE, /* Not the default. */
131 bfd_default_compatible,
136 32, /* 32 bits in a word. */
137 32, /* 32 bits in an address. */
138 8, /* 8 bits in a byte. */
141 "sh", /* Architecture name. */
142 "sh3e", /* Machine name. */
144 FALSE, /* Not the default. */
145 bfd_default_compatible,
150 32, /* 32 bits in a word. */
151 32, /* 32 bits in an address. */
152 8, /* 8 bits in a byte. */
155 "sh", /* Architecture name. */
156 "sh4", /* Machine name. */
158 FALSE, /* Not the default. */
159 bfd_default_compatible,
164 32, /* 32 bits in a word. */
165 32, /* 32 bits in an address. */
166 8, /* 8 bits in a byte. */
169 "sh", /* Architecture name. */
170 "sh4a", /* Machine name. */
172 FALSE, /* Not the default. */
173 bfd_default_compatible,
178 32, /* 32 bits in a word. */
179 32, /* 32 bits in an address. */
180 8, /* 8 bits in a byte. */
183 "sh", /* Architecture name. */
184 "sh4al-dsp", /* Machine name. */
186 FALSE, /* Not the default. */
187 bfd_default_compatible,
192 32, /* 32 bits in a word. */
193 32, /* 32 bits in an address. */
194 8, /* 8 bits in a byte. */
197 "sh", /* Architecture name. */
198 "sh4-nofpu", /* Machine name. */
200 FALSE, /* Not the default. */
201 bfd_default_compatible,
206 32, /* 32 bits in a word. */
207 32, /* 32 bits in an address. */
208 8, /* 8 bits in a byte. */
210 bfd_mach_sh4_nommu_nofpu,
211 "sh", /* Architecture name. */
212 "sh4-nommu-nofpu", /* Machine name. */
214 FALSE, /* Not the default. */
215 bfd_default_compatible,
220 32, /* 32 bits in a word. */
221 32, /* 32 bits in an address. */
222 8, /* 8 bits in a byte. */
225 "sh", /* Architecture name. */
226 "sh4a-nofpu", /* Machine name. */
228 FALSE, /* Not the default. */
229 bfd_default_compatible,
234 32, /* 32 bits in a word. */
235 32, /* 32 bits in an address. */
236 8, /* 8 bits in a byte. */
239 "sh", /* Architecture name. */
240 "sh2a", /* Machine name. */
242 FALSE, /* Not the default. */
243 bfd_default_compatible,
248 32, /* 32 bits in a word. */
249 32, /* 32 bits in an address. */
250 8, /* 8 bits in a byte. */
253 "sh", /* Architecture name. */
254 "sh2a-nofpu", /* Machine name. */
256 FALSE, /* Not the default. */
257 bfd_default_compatible,
262 32, /* 32 bits in a word. */
263 32, /* 32 bits in an address. */
264 8, /* 8 bits in a byte. */
266 bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu,
267 "sh", /* Architecture name. */
268 "sh2a-nofpu-or-sh4-nommu-nofpu", /* Machine name. */
270 FALSE, /* Not the default. */
271 bfd_default_compatible,
273 SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT
276 32, /* 32 bits in a word. */
277 32, /* 32 bits in an address. */
278 8, /* 8 bits in a byte. */
280 bfd_mach_sh2a_nofpu_or_sh3_nommu,
281 "sh", /* Architecture name. . */
282 "sh2a-nofpu-or-sh3-nommu", /* Machine name. */
284 FALSE, /* Not the default. */
285 bfd_default_compatible,
287 SH2A_NOFPU_OR_SH3_NOMMU_NEXT
290 32, /* 32 bits in a word. */
291 32, /* 32 bits in an address. */
292 8, /* 8 bits in a byte. */
294 bfd_mach_sh2a_or_sh4,
295 "sh", /* Architecture name. */
296 "sh2a-or-sh4", /* Machine name. */
298 FALSE, /* Not the default. */
299 bfd_default_compatible,
304 32, /* 32 bits in a word. */
305 32, /* 32 bits in an address. */
306 8, /* 8 bits in a byte. */
308 bfd_mach_sh2a_or_sh3e,
309 "sh", /* Architecture name. */
310 "sh2a-or-sh3e", /* Machine name. */
312 FALSE, /* Not the default. */
313 bfd_default_compatible,
318 64, /* 64 bits in a word. */
319 64, /* 64 bits in an address. */
320 8, /* 8 bits in a byte. */
323 "sh", /* Architecture name. */
324 "sh5", /* Machine name. */
326 FALSE, /* Not the default. */
327 bfd_default_compatible,
333 const bfd_arch_info_type bfd_sh_arch =
335 32, /* 32 bits in a word. */
336 32, /* 32 bits in an address. */
337 8, /* 8 bits in a byte. */
340 "sh", /* Architecture name. */
341 "sh", /* Machine name. */
343 TRUE, /* The default machine. */
344 bfd_default_compatible,
350 /* This table defines the mappings from the BFD internal numbering
351 system to the opcodes internal flags system.
352 It is used by the functions defined below.
353 The prototypes for these SH specific functions are found in
356 static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] =
358 { bfd_mach_sh, arch_sh1, arch_sh_up },
359 { bfd_mach_sh2, arch_sh2, arch_sh2_up },
360 { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up },
361 { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up },
362 { bfd_mach_sh2a, arch_sh2a, arch_sh2a_up },
363 { bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up },
365 { bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu_up },
366 { bfd_mach_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu_up },
367 { bfd_mach_sh2a_or_sh4, arch_sh2a_or_sh4, arch_sh2a_or_sh4_up },
368 { bfd_mach_sh2a_or_sh3e, arch_sh2a_or_sh3e, arch_sh2a_or_sh3e_up },
370 { bfd_mach_sh3, arch_sh3, arch_sh3_up },
371 { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up },
372 { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up },
373 { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up },
374 { bfd_mach_sh4, arch_sh4, arch_sh4_up },
375 { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up },
376 { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up },
377 { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofpu_up },
378 { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up },
379 { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofpu_up },
380 { 0, 0, 0 } /* Terminator. */
384 /* Convert a BFD mach number into the right opcodes arch flags
385 using the table above. */
388 sh_get_arch_from_bfd_mach (unsigned long mach)
392 while (bfd_to_arch_table[i].bfd_mach != 0)
393 if (bfd_to_arch_table[i].bfd_mach == mach)
394 return bfd_to_arch_table[i].arch;
398 /* Machine not found. */
401 return SH_ARCH_UNKNOWN_ARCH;
405 /* Convert a BFD mach number into a set of opcodes arch flags
406 describing all the compatible architectures (i.e. arch_up)
407 using the table above. */
410 sh_get_arch_up_from_bfd_mach (unsigned long mach)
414 while (bfd_to_arch_table[i].bfd_mach != 0)
415 if (bfd_to_arch_table[i].bfd_mach == mach)
416 return bfd_to_arch_table[i].arch_up;
420 /* Machine not found. */
423 return SH_ARCH_UNKNOWN_ARCH;
427 /* Convert an arbitary arch_set - not necessarily corresponding
428 directly to anything in the table above - to the most generic
429 architecture which supports all the required features, and
430 return the corresponding BFD mach. */
433 sh_get_bfd_mach_from_arch_set (unsigned int arch_set)
435 unsigned long result = 0;
436 unsigned int best = ~arch_set;
437 unsigned int co_mask = ~0;
440 /* If arch_set permits variants with no coprocessor then do not allow
441 the other irrelevant co-processor bits to influence the choice:
442 e.g. if dsp is disallowed by arch_set, then the algorithm would
443 prefer fpu variants over nofpu variants because they also disallow
444 dsp - even though the nofpu would be the most correct choice.
445 This assumes that EVERY fpu/dsp variant has a no-coprocessor
446 counter-part, or their non-fpu/dsp instructions do not have the
447 no co-processor bit set. */
448 if (arch_set & arch_sh_no_co)
449 co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp);
451 while (bfd_to_arch_table[i].bfd_mach != 0)
453 unsigned int try = bfd_to_arch_table[i].arch_up & co_mask;
455 /* Conceptually: Find the architecture with the least number
456 of extra features or, if they have the same number, then
457 the greatest number of required features. Disregard
458 architectures where the required features alone do
459 not describe a valid architecture. */
460 if (((try & ~arch_set) < (best & ~arch_set)
461 || ((try & ~arch_set) == (best & ~arch_set)
462 && (~try & arch_set) < (~best & arch_set)))
463 && SH_MERGE_ARCH_SET_VALID (try, arch_set))
465 result = bfd_to_arch_table[i].bfd_mach;
472 /* This might happen if a new variant is added to sh-opc.h
473 but no corresponding entry is added to the table above. */
474 BFD_ASSERT (result != 0);
480 /* Merge the architecture type of two BFD files, such that the
481 resultant architecture supports all the features required
482 by the two input BFDs.
483 If the input BFDs are multually incompatible - i.e. one uses
484 DSP while the other uses FPU - or there is no known architecture
485 that fits the requirements then an error is emitted. */
488 sh_merge_bfd_arch (bfd *ibfd, bfd *obfd)
490 unsigned int old_arch, new_arch, merged_arch;
492 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
495 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
496 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
498 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
500 if (!SH_VALID_CO_ARCH_SET (merged_arch))
502 (*_bfd_error_handler)
503 ("%B: uses %s instructions while previous modules use %s instructions",
505 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
506 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
507 bfd_set_error (bfd_error_bad_value);
510 else if (!SH_VALID_ARCH_SET (merged_arch))
512 (*_bfd_error_handler)
513 ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n",
514 bfd_printable_name (obfd),
515 bfd_printable_name (ibfd));
516 bfd_set_error (bfd_error_bad_value);
520 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
521 sh_get_bfd_mach_from_arch_set (merged_arch));