1/* Common hooks for Blackfin.
2   Copyright (C) 2005-2020 Free Software Foundation, Inc.
3
4   This file is part of GCC.
5
6   GCC is free software; you can redistribute it and/or modify it
7   under the terms of the GNU General Public License as published
8   by the Free Software Foundation; either version 3, or (at your
9   option) any later version.
10
11   GCC is distributed in the hope that it will be useful, but WITHOUT
12   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
14   License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with GCC; see the file COPYING3.  If not see
18   <http://www.gnu.org/licenses/>.  */
19
20#include "config.h"
21#include "system.h"
22#include "coretypes.h"
23#include "diagnostic-core.h"
24#include "tm.h"
25#include "memmodel.h"
26#include "tm_p.h"
27#include "common/common-target.h"
28#include "common/common-target-def.h"
29#include "opts.h"
30#include "flags.h"
31
32EXPORTED_CONST struct bfin_cpu bfin_cpus[] =
33{
34
35  {"bf512", BFIN_CPU_BF512, 0x0002,
36   WA_SPECULATIVE_LOADS | WA_05000074},
37  {"bf512", BFIN_CPU_BF512, 0x0001,
38   WA_SPECULATIVE_LOADS | WA_05000074},
39  {"bf512", BFIN_CPU_BF512, 0x0000,
40   WA_SPECULATIVE_LOADS | WA_05000074},
41
42  {"bf514", BFIN_CPU_BF514, 0x0002,
43   WA_SPECULATIVE_LOADS | WA_05000074},
44  {"bf514", BFIN_CPU_BF514, 0x0001,
45   WA_SPECULATIVE_LOADS | WA_05000074},
46  {"bf514", BFIN_CPU_BF514, 0x0000,
47   WA_SPECULATIVE_LOADS | WA_05000074},
48
49  {"bf516", BFIN_CPU_BF516, 0x0002,
50   WA_SPECULATIVE_LOADS | WA_05000074},
51  {"bf516", BFIN_CPU_BF516, 0x0001,
52   WA_SPECULATIVE_LOADS | WA_05000074},
53  {"bf516", BFIN_CPU_BF516, 0x0000,
54   WA_SPECULATIVE_LOADS | WA_05000074},
55
56  {"bf518", BFIN_CPU_BF518, 0x0002,
57   WA_SPECULATIVE_LOADS | WA_05000074},
58  {"bf518", BFIN_CPU_BF518, 0x0001,
59   WA_SPECULATIVE_LOADS | WA_05000074},
60  {"bf518", BFIN_CPU_BF518, 0x0000,
61   WA_SPECULATIVE_LOADS | WA_05000074},
62
63  {"bf522", BFIN_CPU_BF522, 0x0002,
64   WA_SPECULATIVE_LOADS | WA_05000074},
65  {"bf522", BFIN_CPU_BF522, 0x0001,
66   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
67  {"bf522", BFIN_CPU_BF522, 0x0000,
68   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
69
70  {"bf523", BFIN_CPU_BF523, 0x0002,
71   WA_SPECULATIVE_LOADS | WA_05000074},
72  {"bf523", BFIN_CPU_BF523, 0x0001,
73   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
74  {"bf523", BFIN_CPU_BF523, 0x0000,
75   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
76
77  {"bf524", BFIN_CPU_BF524, 0x0002,
78   WA_SPECULATIVE_LOADS | WA_05000074},
79  {"bf524", BFIN_CPU_BF524, 0x0001,
80   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
81  {"bf524", BFIN_CPU_BF524, 0x0000,
82   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
83
84  {"bf525", BFIN_CPU_BF525, 0x0002,
85   WA_SPECULATIVE_LOADS | WA_05000074},
86  {"bf525", BFIN_CPU_BF525, 0x0001,
87   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
88  {"bf525", BFIN_CPU_BF525, 0x0000,
89   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
90
91  {"bf526", BFIN_CPU_BF526, 0x0002,
92   WA_SPECULATIVE_LOADS | WA_05000074},
93  {"bf526", BFIN_CPU_BF526, 0x0001,
94   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
95  {"bf526", BFIN_CPU_BF526, 0x0000,
96   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
97
98  {"bf527", BFIN_CPU_BF527, 0x0002,
99   WA_SPECULATIVE_LOADS | WA_05000074},
100  {"bf527", BFIN_CPU_BF527, 0x0001,
101   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
102  {"bf527", BFIN_CPU_BF527, 0x0000,
103   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000074},
104
105  {"bf531", BFIN_CPU_BF531, 0x0006,
106   WA_SPECULATIVE_LOADS | WA_LOAD_LCREGS | WA_05000074},
107  {"bf531", BFIN_CPU_BF531, 0x0005,
108   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000283 | WA_05000315
109   | WA_LOAD_LCREGS | WA_05000074},
110  {"bf531", BFIN_CPU_BF531, 0x0004,
111   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
112   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
113   | WA_05000074},
114  {"bf531", BFIN_CPU_BF531, 0x0003,
115   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
116   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
117   | WA_05000074},
118
119  {"bf532", BFIN_CPU_BF532, 0x0006,
120   WA_SPECULATIVE_LOADS | WA_LOAD_LCREGS | WA_05000074},
121  {"bf532", BFIN_CPU_BF532, 0x0005,
122   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000283 | WA_05000315
123   | WA_LOAD_LCREGS | WA_05000074},
124  {"bf532", BFIN_CPU_BF532, 0x0004,
125   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
126   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
127   | WA_05000074},
128  {"bf532", BFIN_CPU_BF532, 0x0003,
129   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
130   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
131   | WA_05000074},
132
133  {"bf533", BFIN_CPU_BF533, 0x0006,
134   WA_SPECULATIVE_LOADS | WA_LOAD_LCREGS | WA_05000074},
135  {"bf533", BFIN_CPU_BF533, 0x0005,
136   WA_SPECULATIVE_LOADS | WA_RETS | WA_05000283 | WA_05000315
137   | WA_LOAD_LCREGS | WA_05000074},
138  {"bf533", BFIN_CPU_BF533, 0x0004,
139   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
140   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
141   | WA_05000074},
142  {"bf533", BFIN_CPU_BF533, 0x0003,
143   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
144   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
145   | WA_05000074},
146
147  {"bf534", BFIN_CPU_BF534, 0x0003,
148   WA_SPECULATIVE_LOADS | WA_RETS | WA_LOAD_LCREGS | WA_05000074},
149  {"bf534", BFIN_CPU_BF534, 0x0002,
150   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
151   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
152   | WA_05000074},
153  {"bf534", BFIN_CPU_BF534, 0x0001,
154   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
155   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
156   | WA_05000074},
157
158  {"bf536", BFIN_CPU_BF536, 0x0003,
159   WA_SPECULATIVE_LOADS | WA_RETS | WA_LOAD_LCREGS | WA_05000074},
160  {"bf536", BFIN_CPU_BF536, 0x0002,
161   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
162   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
163   | WA_05000074},
164  {"bf536", BFIN_CPU_BF536, 0x0001,
165   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
166   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
167   | WA_05000074},
168
169  {"bf537", BFIN_CPU_BF537, 0x0003,
170   WA_SPECULATIVE_LOADS | WA_RETS | WA_LOAD_LCREGS | WA_05000074},
171  {"bf537", BFIN_CPU_BF537, 0x0002,
172   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
173   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
174   | WA_05000074},
175  {"bf537", BFIN_CPU_BF537, 0x0001,
176   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
177   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
178   | WA_05000074},
179
180  {"bf538", BFIN_CPU_BF538, 0x0005,
181   WA_SPECULATIVE_LOADS | WA_LOAD_LCREGS | WA_05000074},
182  {"bf538", BFIN_CPU_BF538, 0x0004,
183   WA_SPECULATIVE_LOADS | WA_RETS | WA_LOAD_LCREGS | WA_05000074},
184  {"bf538", BFIN_CPU_BF538, 0x0003,
185   WA_SPECULATIVE_LOADS | WA_RETS
186   | WA_05000283 | WA_05000315 | WA_LOAD_LCREGS | WA_05000074},
187  {"bf538", BFIN_CPU_BF538, 0x0002,
188   WA_SPECULATIVE_LOADS | WA_RETS
189   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
190   | WA_05000074},
191
192  {"bf539", BFIN_CPU_BF539, 0x0005,
193   WA_SPECULATIVE_LOADS | WA_LOAD_LCREGS | WA_05000074},
194  {"bf539", BFIN_CPU_BF539, 0x0004,
195   WA_SPECULATIVE_LOADS | WA_RETS | WA_LOAD_LCREGS | WA_05000074},
196  {"bf539", BFIN_CPU_BF539, 0x0003,
197   WA_SPECULATIVE_LOADS | WA_RETS
198   | WA_05000283 | WA_05000315 | WA_LOAD_LCREGS | WA_05000074},
199  {"bf539", BFIN_CPU_BF539, 0x0002,
200   WA_SPECULATIVE_LOADS | WA_RETS
201   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
202   | WA_05000074},
203
204  {"bf542m", BFIN_CPU_BF542M, 0x0003,
205   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
206
207  {"bf542", BFIN_CPU_BF542, 0x0004,
208   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
209  {"bf542", BFIN_CPU_BF542, 0x0002,
210   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
211  {"bf542", BFIN_CPU_BF542, 0x0001,
212   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_05000074},
213  {"bf542", BFIN_CPU_BF542, 0x0000,
214   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_LOAD_LCREGS
215   | WA_05000074},
216
217  {"bf544m", BFIN_CPU_BF544M, 0x0003,
218   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
219
220  {"bf544", BFIN_CPU_BF544, 0x0004,
221   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
222  {"bf544", BFIN_CPU_BF544, 0x0002,
223   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
224  {"bf544", BFIN_CPU_BF544, 0x0001,
225   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_05000074},
226  {"bf544", BFIN_CPU_BF544, 0x0000,
227   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_LOAD_LCREGS
228   | WA_05000074},
229
230  {"bf547m", BFIN_CPU_BF547M, 0x0003,
231   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
232
233  {"bf547", BFIN_CPU_BF547, 0x0004,
234   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
235  {"bf547", BFIN_CPU_BF547, 0x0002,
236   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
237  {"bf547", BFIN_CPU_BF547, 0x0001,
238   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_05000074},
239  {"bf547", BFIN_CPU_BF547, 0x0000,
240   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_LOAD_LCREGS
241   | WA_05000074},
242
243  {"bf548m", BFIN_CPU_BF548M, 0x0003,
244   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
245
246  {"bf548", BFIN_CPU_BF548, 0x0004,
247   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
248  {"bf548", BFIN_CPU_BF548, 0x0002,
249   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
250  {"bf548", BFIN_CPU_BF548, 0x0001,
251   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_05000074},
252  {"bf548", BFIN_CPU_BF548, 0x0000,
253   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_LOAD_LCREGS
254   | WA_05000074},
255
256  {"bf549m", BFIN_CPU_BF549M, 0x0003,
257   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
258
259  {"bf549", BFIN_CPU_BF549, 0x0004,
260   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
261  {"bf549", BFIN_CPU_BF549, 0x0002,
262   WA_SPECULATIVE_LOADS | WA_INDIRECT_CALLS | WA_05000074},
263  {"bf549", BFIN_CPU_BF549, 0x0001,
264   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_05000074},
265  {"bf549", BFIN_CPU_BF549, 0x0000,
266   WA_SPECULATIVE_LOADS | WA_RETS | WA_INDIRECT_CALLS | WA_LOAD_LCREGS
267   | WA_05000074},
268
269  {"bf561", BFIN_CPU_BF561, 0x0005, WA_RETS
270   | WA_05000283 | WA_05000315 | WA_LOAD_LCREGS | WA_05000074},
271  {"bf561", BFIN_CPU_BF561, 0x0003,
272   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
273   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
274   | WA_05000074},
275  {"bf561", BFIN_CPU_BF561, 0x0002,
276   WA_SPECULATIVE_LOADS | WA_SPECULATIVE_SYNCS | WA_RETS
277   | WA_05000283 | WA_05000257 | WA_05000315 | WA_LOAD_LCREGS
278   | WA_05000074},
279
280  {"bf592", BFIN_CPU_BF592, 0x0001,
281   WA_SPECULATIVE_LOADS | WA_05000074},
282  {"bf592", BFIN_CPU_BF592, 0x0000,
283   WA_SPECULATIVE_LOADS | WA_05000074},
284
285  {NULL, BFIN_CPU_UNKNOWN, 0, 0}
286};
287
288/* Implement TARGET_HANDLE_OPTION.  */
289
290static bool
291bfin_handle_option (struct gcc_options *opts,
292		    struct gcc_options *opts_set ATTRIBUTE_UNUSED,
293		    const struct cl_decoded_option *decoded,
294		    location_t loc)
295{
296  size_t code = decoded->opt_index;
297  const char *arg = decoded->arg;
298  int value = decoded->value;
299
300  switch (code)
301    {
302    case OPT_mshared_library_id_:
303      if (value > MAX_LIBRARY_ID)
304	error_at (loc, "%<-mshared-library-id=%s%> is not between 0 and %d",
305		  arg, MAX_LIBRARY_ID);
306      return true;
307
308    case OPT_mcpu_:
309      {
310	const char *p, *q;
311	int i;
312
313	i = 0;
314	while ((p = bfin_cpus[i].name) != NULL)
315	  {
316	    if (strncmp (arg, p, strlen (p)) == 0)
317	      break;
318	    i++;
319	  }
320
321	if (p == NULL)
322	  {
323	    error_at (loc, "%<-mcpu=%s%> is not valid", arg);
324	    return false;
325	  }
326
327	opts->x_bfin_cpu_type = bfin_cpus[i].type;
328
329	q = arg + strlen (p);
330
331	if (*q == '\0')
332	  {
333	    opts->x_bfin_si_revision = bfin_cpus[i].si_revision;
334	    opts->x_bfin_workarounds |= bfin_cpus[i].workarounds;
335	  }
336	else if (strcmp (q, "-none") == 0)
337	  opts->x_bfin_si_revision = -1;
338      	else if (strcmp (q, "-any") == 0)
339	  {
340	    opts->x_bfin_si_revision = 0xffff;
341	    while (bfin_cpus[i].type == opts->x_bfin_cpu_type)
342	      {
343		opts->x_bfin_workarounds |= bfin_cpus[i].workarounds;
344		i++;
345	      }
346	  }
347	else
348	  {
349	    unsigned int si_major, si_minor;
350	    int rev_len, n;
351
352	    rev_len = strlen (q);
353
354	    if (sscanf (q, "-%u.%u%n", &si_major, &si_minor, &n) != 2
355		|| n != rev_len
356		|| si_major > 0xff || si_minor > 0xff)
357	      {
358	      invalid_silicon_revision:
359		error_at (loc, "%<-mcpu=%s%> has invalid silicon revision",
360			  arg);
361		return false;
362	      }
363
364	    opts->x_bfin_si_revision = (si_major << 8) | si_minor;
365
366	    while (bfin_cpus[i].type == opts->x_bfin_cpu_type
367		   && bfin_cpus[i].si_revision != opts->x_bfin_si_revision)
368	      i++;
369
370	    if (bfin_cpus[i].type != opts->x_bfin_cpu_type)
371	      goto invalid_silicon_revision;
372
373	    opts->x_bfin_workarounds |= bfin_cpus[i].workarounds;
374	  }
375
376	return true;
377      }
378
379    default:
380      return true;
381    }
382}
383
384#undef TARGET_HANDLE_OPTION
385#define TARGET_HANDLE_OPTION bfin_handle_option
386
387#undef TARGET_DEFAULT_TARGET_FLAGS
388#define TARGET_DEFAULT_TARGET_FLAGS TARGET_DEFAULT
389
390struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
391