1 /* BFD library support routines for the Renesas / SuperH SH architecture.
2 Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004
3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 SH64_NEXT NULL
45 static const bfd_arch_info_type arch_info_struct[] =
48 32, /* 32 bits in a word */
49 32, /* 32 bits in an address */
50 8, /* 8 bits in a byte */
54 "sh2", /* printable name */
56 FALSE, /* not the default */
57 bfd_default_compatible,
62 32, /* 32 bits in a word */
63 32, /* 32 bits in an address */
64 8, /* 8 bits in a byte */
68 "sh2e", /* printable name */
70 FALSE, /* not the default */
71 bfd_default_compatible,
76 32, /* 32 bits in a word */
77 32, /* 32 bits in an address */
78 8, /* 8 bits in a byte */
82 "sh-dsp", /* printable name */
84 FALSE, /* not the default */
85 bfd_default_compatible,
90 32, /* 32 bits in a word */
91 32, /* 32 bits in an address */
92 8, /* 8 bits in a byte */
96 "sh3", /* printable name */
98 FALSE, /* not the default */
99 bfd_default_compatible,
104 32, /* 32 bits in a word */
105 32, /* 32 bits in an address */
106 8, /* 8 bits in a byte */
109 "sh", /* arch_name */
110 "sh3-nommu", /* printable name */
112 FALSE, /* not the default */
113 bfd_default_compatible,
118 32, /* 32 bits in a word */
119 32, /* 32 bits in an address */
120 8, /* 8 bits in a byte */
123 "sh", /* arch_name */
124 "sh3-dsp", /* printable name */
126 FALSE, /* not the default */
127 bfd_default_compatible,
132 32, /* 32 bits in a word */
133 32, /* 32 bits in an address */
134 8, /* 8 bits in a byte */
137 "sh", /* arch_name */
138 "sh3e", /* printable name */
140 FALSE, /* not the default */
141 bfd_default_compatible,
146 32, /* 32 bits in a word */
147 32, /* 32 bits in an address */
148 8, /* 8 bits in a byte */
151 "sh", /* arch_name */
152 "sh4", /* printable name */
154 FALSE, /* not the default */
155 bfd_default_compatible,
160 32, /* 32 bits in a word */
161 32, /* 32 bits in an address */
162 8, /* 8 bits in a byte */
165 "sh", /* arch_name */
166 "sh4a", /* printable name */
168 FALSE, /* not the default */
169 bfd_default_compatible,
174 32, /* 32 bits in a word */
175 32, /* 32 bits in an address */
176 8, /* 8 bits in a byte */
179 "sh", /* arch_name */
180 "sh4al-dsp", /* printable name */
182 FALSE, /* not the default */
183 bfd_default_compatible,
188 32, /* 32 bits in a word */
189 32, /* 32 bits in an address */
190 8, /* 8 bits in a byte */
193 "sh", /* arch_name */
194 "sh4-nofpu", /* printable name */
196 FALSE, /* not the default */
197 bfd_default_compatible,
202 32, /* 32 bits in a word */
203 32, /* 32 bits in an address */
204 8, /* 8 bits in a byte */
206 bfd_mach_sh4_nommu_nofpu,
207 "sh", /* arch_name */
208 "sh4-nommu-nofpu", /* printable name */
210 FALSE, /* not the default */
211 bfd_default_compatible,
216 32, /* 32 bits in a word */
217 32, /* 32 bits in an address */
218 8, /* 8 bits in a byte */
221 "sh", /* arch_name */
222 "sh4a-nofpu", /* printable name */
224 FALSE, /* not the default */
225 bfd_default_compatible,
230 32, /* 32 bits in a word. */
231 32, /* 32 bits in an address. */
232 8, /* 8 bits in a byte. */
235 "sh", /* Arch_name. */
236 "sh2a", /* Printable name. */
238 FALSE, /* Not the default. */
239 bfd_default_compatible,
244 32, /* 32 bits in a word. */
245 32, /* 32 bits in an address. */
246 8, /* 8 bits in a byte. */
249 "sh", /* Arch_name. */
250 "sh2a-nofpu", /* Printable name. */
252 FALSE, /* Not the default. */
253 bfd_default_compatible,
258 64, /* 64 bits in a word */
259 64, /* 64 bits in an address */
260 8, /* 8 bits in a byte */
263 "sh", /* arch_name */
264 "sh5", /* printable name */
266 FALSE, /* not the default */
267 bfd_default_compatible,
273 const bfd_arch_info_type bfd_sh_arch =
275 32, /* 32 bits in a word */
276 32, /* 32 bits in an address */
277 8, /* 8 bits in a byte */
280 "sh", /* arch_name */
281 "sh", /* printable name */
283 TRUE, /* the default machine */
284 bfd_default_compatible,
290 /* This table defines the mappings from the BFD internal numbering
291 system to the opcodes internal flags system.
292 It is used by the functions defined below.
293 The prototypes for these SH specific functions are found in
296 static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] =
298 { bfd_mach_sh, arch_sh1, arch_sh1_up },
299 { bfd_mach_sh2, arch_sh2, arch_sh2_up },
300 { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up },
301 { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up },
302 { bfd_mach_sh2a, arch_sh2a, arch_sh2a_up },
303 { bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up },
304 { bfd_mach_sh3, arch_sh3, arch_sh3_up },
305 { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up },
306 { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up },
307 { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up },
308 { bfd_mach_sh4, arch_sh4, arch_sh4_up },
309 { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up },
310 { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up },
311 { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofp_up },
312 { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up },
313 { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofp_up },
314 { 0, 0, 0 } /* Terminator. */
318 /* Convert a BFD mach number into the right opcodes arch flags
319 using the table above. */
322 sh_get_arch_from_bfd_mach (unsigned long mach)
326 while (bfd_to_arch_table[i].bfd_mach != 0)
327 if (bfd_to_arch_table[i].bfd_mach == mach)
328 return bfd_to_arch_table[i].arch;
332 /* mach not found. */
335 return SH_ARCH_UNKNOWN_ARCH;
339 /* Convert a BFD mach number into a set of opcodes arch flags
340 describing all the compatible architectures (i.e. arch_up)
341 using the table above. */
344 sh_get_arch_up_from_bfd_mach (unsigned long mach)
348 while (bfd_to_arch_table[i].bfd_mach != 0)
349 if (bfd_to_arch_table[i].bfd_mach == mach)
350 return bfd_to_arch_table[i].arch_up;
354 /* mach not found. */
357 return SH_ARCH_UNKNOWN_ARCH;
361 /* Convert an arbitary arch_set - not necessarily corresponding
362 directly to anything in the table above - to the most generic
363 architecture which supports all the required features, and
364 return the corresponding BFD mach. */
367 sh_get_bfd_mach_from_arch_set (unsigned int arch_set)
369 unsigned long result = 0;
370 unsigned int best = ~arch_set;
371 unsigned int co_mask = ~0;
374 /* If arch_set permits variants with no coprocessor then do not allow
375 the other irrelevant co-processor bits to influence the choice:
376 e.g. if dsp is disallowed by arch_set, then the algorithm would
377 prefer fpu variants over nofpu variants because they also disallow
378 dsp - even though the nofpu would be the most correct choice.
379 This assumes that EVERY fpu/dsp variant has a no-coprocessor
380 counter-part, or their non-fpu/dsp instructions do not have the
381 no co-processor bit set. */
382 if (arch_set & arch_sh_no_co)
383 co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp);
385 while (bfd_to_arch_table[i].bfd_mach != 0)
387 unsigned int try = bfd_to_arch_table[i].arch_up & co_mask;
389 /* Conceptually: Find the architecture with the least number
390 of extra features or, if they have the same number, then
391 the greatest number of required features. Disregard
392 architectures where the required features alone do
393 not describe a valid architecture. */
394 if (((try & ~arch_set) < (best & ~arch_set)
395 || ((try & ~arch_set) == (best & ~arch_set)
396 && (~try & arch_set) < (~best & arch_set)))
397 && SH_MERGE_ARCH_SET_VALID (try, arch_set))
399 result = bfd_to_arch_table[i].bfd_mach;
406 /* This might happen if a new variant is added to sh-opc.h
407 but no corresponding entry is added to the table above. */
408 BFD_ASSERT (result != 0);
414 /* Merge the architecture type of two BFD files, such that the
415 resultant architecture supports all the features required
416 by the two input BFDs.
417 If the input BFDs are multually incompatible - i.e. one uses
418 DSP while the other uses FPU - or there is no known architecture
419 that fits the requirements then an error is emitted. */
422 sh_merge_bfd_arch (bfd *ibfd, bfd *obfd)
424 unsigned int old_arch, new_arch, merged_arch;
426 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
429 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
430 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
432 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
434 if (!SH_VALID_CO_ARCH_SET (merged_arch))
436 (*_bfd_error_handler)
437 ("%B: uses %s instructions while previous modules use %s instructions",
439 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
440 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
441 bfd_set_error (bfd_error_bad_value);
444 else if (!SH_VALID_ARCH_SET (merged_arch))
446 (*_bfd_error_handler)
447 ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n",
448 bfd_printable_name (obfd),
449 bfd_printable_name (ibfd));
450 bfd_set_error (bfd_error_bad_value);
454 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
455 sh_get_bfd_mach_from_arch_set (merged_arch));