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7acf4da6 | 1 | /* Definitions of Toshiba Media Processor |
23a5b65a | 2 | Copyright (C) 2001-2014 Free Software Foundation, Inc. |
90d04a44 | 3 | Contributed by Red Hat, Inc. |
7acf4da6 DD |
4 | |
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
7acf4da6 DD |
21 | #include "config.h" |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
24 | #include "tm.h" | |
25 | #include "tree.h" | |
718f9c0f | 26 | #include "diagnostic-core.h" |
39dabefd | 27 | #include "c-family/c-pragma.h" |
7acf4da6 DD |
28 | #include "cpplib.h" |
29 | #include "hard-reg-set.h" | |
416ff32e | 30 | #include "output.h" /* for decode_reg_name */ |
7acf4da6 DD |
31 | #include "mep-protos.h" |
32 | #include "function.h" | |
33 | #define MAX_RECOG_OPERANDS 10 | |
34 | #include "reload.h" | |
35 | #include "target.h" | |
36 | ||
37 | enum cw_which { CW_AVAILABLE, CW_CALL_SAVED }; | |
38 | ||
c28883e6 DD |
39 | /* This is normally provided by rtl.h but we can't include that file |
40 | here. It's safe to copy the definition here because we're only | |
41 | using it internally; the value isn't passed to functions outside | |
42 | this file. */ | |
43 | #ifndef INVALID_REGNUM | |
44 | #define INVALID_REGNUM (~(unsigned int) 0) | |
45 | #endif | |
46 | ||
7acf4da6 DD |
47 | static enum cpp_ttype |
48 | mep_pragma_lex (tree *valp) | |
49 | { | |
50 | enum cpp_ttype t = pragma_lex (valp); | |
51 | if (t == CPP_EOF) | |
52 | t = CPP_PRAGMA_EOL; | |
53 | return t; | |
54 | } | |
55 | ||
56 | static void | |
57 | mep_pragma_io_volatile (cpp_reader *reader ATTRIBUTE_UNUSED) | |
58 | { | |
59 | /* On off. */ | |
60 | tree val; | |
61 | enum cpp_ttype type; | |
62 | const char * str; | |
63 | ||
64 | type = mep_pragma_lex (&val); | |
65 | if (type == CPP_NAME) | |
66 | { | |
67 | str = IDENTIFIER_POINTER (val); | |
68 | ||
69 | type = mep_pragma_lex (&val); | |
70 | if (type != CPP_PRAGMA_EOL) | |
71 | warning (0, "junk at end of #pragma io_volatile"); | |
72 | ||
73 | if (strcmp (str, "on") == 0) | |
74 | { | |
75 | target_flags |= MASK_IO_VOLATILE; | |
76 | return; | |
77 | } | |
78 | if (strcmp (str, "off") == 0) | |
79 | { | |
80 | target_flags &= ~ MASK_IO_VOLATILE; | |
81 | return; | |
82 | } | |
83 | } | |
84 | ||
85 | error ("#pragma io_volatile takes only on or off"); | |
86 | } | |
87 | ||
88 | static unsigned int | |
89 | parse_cr_reg (const char * str) | |
90 | { | |
91 | unsigned int regno; | |
92 | ||
93 | regno = decode_reg_name (str); | |
94 | if (regno >= FIRST_PSEUDO_REGISTER) | |
95 | return INVALID_REGNUM; | |
96 | ||
97 | /* Verify that the regno is in CR_REGS. */ | |
98 | if (! TEST_HARD_REG_BIT (reg_class_contents[CR_REGS], regno)) | |
99 | return INVALID_REGNUM; | |
100 | return regno; | |
101 | } | |
102 | ||
103 | static bool | |
104 | parse_cr_set (HARD_REG_SET * set) | |
105 | { | |
106 | tree val; | |
107 | enum cpp_ttype type; | |
108 | unsigned int last_regno = INVALID_REGNUM; | |
109 | bool do_range = false; | |
110 | ||
111 | CLEAR_HARD_REG_SET (*set); | |
112 | ||
113 | while ((type = mep_pragma_lex (&val)) != CPP_PRAGMA_EOL) | |
114 | { | |
115 | if (type == CPP_COMMA) | |
116 | { | |
117 | last_regno = INVALID_REGNUM; | |
118 | do_range = false; | |
119 | } | |
120 | else if (type == CPP_ELLIPSIS) | |
121 | { | |
122 | if (last_regno == INVALID_REGNUM) | |
123 | { | |
124 | error ("invalid coprocessor register range"); | |
125 | return false; | |
126 | } | |
127 | do_range = true; | |
128 | } | |
129 | else if (type == CPP_NAME || type == CPP_STRING) | |
130 | { | |
131 | const char *str; | |
132 | unsigned int regno, i; | |
133 | ||
134 | if (TREE_CODE (val) == IDENTIFIER_NODE) | |
135 | str = IDENTIFIER_POINTER (val); | |
136 | else if (TREE_CODE (val) == STRING_CST) | |
137 | str = TREE_STRING_POINTER (val); | |
138 | else | |
139 | gcc_unreachable (); | |
140 | ||
141 | regno = parse_cr_reg (str); | |
142 | if (regno == INVALID_REGNUM) | |
143 | { | |
144 | error ("invalid coprocessor register %qE", val); | |
145 | return false; | |
146 | } | |
147 | ||
148 | if (do_range) | |
149 | { | |
150 | if (last_regno > regno) | |
151 | i = regno, regno = last_regno; | |
152 | else | |
153 | i = last_regno; | |
154 | do_range = false; | |
155 | } | |
156 | else | |
157 | last_regno = i = regno; | |
158 | ||
159 | while (i <= regno) | |
160 | { | |
161 | SET_HARD_REG_BIT (*set, i); | |
162 | i++; | |
163 | } | |
164 | } | |
165 | else | |
166 | { | |
167 | error ("malformed coprocessor register"); | |
168 | return false; | |
169 | } | |
170 | } | |
171 | return true; | |
172 | } | |
173 | ||
174 | static void | |
175 | mep_pragma_coprocessor_which (enum cw_which cw_which) | |
176 | { | |
177 | HARD_REG_SET set; | |
178 | ||
179 | /* Process the balance of the pragma and turn it into a hard reg set. */ | |
180 | if (! parse_cr_set (&set)) | |
181 | return; | |
182 | ||
183 | /* Process the collected hard reg set. */ | |
184 | switch (cw_which) | |
185 | { | |
186 | case CW_AVAILABLE: | |
187 | { | |
188 | int i; | |
189 | for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i) | |
190 | if (TEST_HARD_REG_BIT (set, i)) | |
191 | fixed_regs[i] = 0; | |
192 | } | |
193 | break; | |
194 | ||
195 | case CW_CALL_SAVED: | |
196 | { | |
197 | int i; | |
198 | for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i) | |
199 | if (TEST_HARD_REG_BIT (set, i)) | |
200 | fixed_regs[i] = call_used_regs[i] = 0; | |
201 | } | |
202 | break; | |
203 | ||
204 | default: | |
205 | gcc_unreachable (); | |
206 | } | |
207 | ||
208 | /* Fix up register class hierarchy. */ | |
c28883e6 DD |
209 | mep_save_register_info (); |
210 | mep_reinit_regs (); | |
7acf4da6 DD |
211 | |
212 | if (cfun == 0) | |
213 | { | |
214 | init_dummy_function_start (); | |
215 | init_caller_save (); | |
216 | expand_dummy_function_end (); | |
217 | } | |
218 | else | |
219 | { | |
220 | init_caller_save (); | |
221 | } | |
222 | } | |
223 | ||
224 | static void | |
225 | mep_pragma_coprocessor_width (void) | |
226 | { | |
227 | tree val; | |
228 | enum cpp_ttype type; | |
229 | HOST_WIDE_INT i; | |
230 | ||
231 | type = mep_pragma_lex (&val); | |
232 | switch (type) | |
233 | { | |
234 | case CPP_NUMBER: | |
cc269bb6 | 235 | if (! tree_fits_uhwi_p (val)) |
7acf4da6 | 236 | break; |
ae7e9ddd | 237 | i = tree_to_uhwi (val); |
7acf4da6 DD |
238 | /* This pragma no longer has any effect. */ |
239 | #if 0 | |
240 | if (i == 32) | |
241 | target_flags &= ~MASK_64BIT_CR_REGS; | |
242 | else if (i == 64) | |
243 | target_flags |= MASK_64BIT_CR_REGS; | |
244 | else | |
245 | break; | |
246 | targetm.init_builtins (); | |
247 | #else | |
248 | if (i != 32 && i != 64) | |
249 | break; | |
250 | #endif | |
251 | ||
252 | type = mep_pragma_lex (&val); | |
253 | if (type != CPP_PRAGMA_EOL) | |
254 | warning (0, "junk at end of #pragma GCC coprocessor width"); | |
255 | return; | |
256 | ||
257 | default: | |
258 | break; | |
259 | } | |
260 | ||
261 | error ("#pragma GCC coprocessor width takes only 32 or 64"); | |
262 | } | |
263 | ||
264 | static void | |
265 | mep_pragma_coprocessor_subclass (void) | |
266 | { | |
267 | tree val; | |
268 | enum cpp_ttype type; | |
269 | HARD_REG_SET set; | |
270 | int class_letter; | |
c28883e6 | 271 | enum reg_class rclass; |
7acf4da6 DD |
272 | |
273 | type = mep_pragma_lex (&val); | |
274 | if (type != CPP_CHAR) | |
275 | goto syntax_error; | |
ae7e9ddd | 276 | class_letter = tree_to_uhwi (val); |
7acf4da6 | 277 | if (class_letter >= 'A' && class_letter <= 'D') |
c28883e6 DD |
278 | switch (class_letter) |
279 | { | |
280 | case 'A': | |
281 | rclass = USER0_REGS; | |
282 | break; | |
283 | case 'B': | |
284 | rclass = USER1_REGS; | |
285 | break; | |
286 | case 'C': | |
287 | rclass = USER2_REGS; | |
288 | break; | |
289 | case 'D': | |
290 | rclass = USER3_REGS; | |
291 | break; | |
292 | } | |
7acf4da6 DD |
293 | else |
294 | { | |
295 | error ("#pragma GCC coprocessor subclass letter must be in [ABCD]"); | |
296 | return; | |
297 | } | |
c28883e6 | 298 | if (reg_class_size[rclass] > 0) |
7acf4da6 DD |
299 | { |
300 | error ("#pragma GCC coprocessor subclass '%c' already defined", | |
301 | class_letter); | |
302 | return; | |
303 | } | |
304 | ||
305 | type = mep_pragma_lex (&val); | |
306 | if (type != CPP_EQ) | |
307 | goto syntax_error; | |
308 | ||
309 | if (! parse_cr_set (&set)) | |
310 | return; | |
311 | ||
312 | /* Fix up register class hierarchy. */ | |
c28883e6 DD |
313 | COPY_HARD_REG_SET (reg_class_contents[rclass], set); |
314 | mep_init_regs (); | |
7acf4da6 DD |
315 | return; |
316 | ||
317 | syntax_error: | |
318 | error ("malformed #pragma GCC coprocessor subclass"); | |
319 | } | |
320 | ||
321 | static void | |
322 | mep_pragma_disinterrupt (cpp_reader *reader ATTRIBUTE_UNUSED) | |
323 | { | |
324 | tree val; | |
325 | enum cpp_ttype type; | |
326 | int saw_one = 0; | |
327 | ||
328 | for (;;) | |
329 | { | |
330 | type = mep_pragma_lex (&val); | |
331 | if (type == CPP_COMMA) | |
332 | continue; | |
333 | if (type != CPP_NAME) | |
334 | break; | |
335 | mep_note_pragma_disinterrupt (IDENTIFIER_POINTER (val)); | |
336 | saw_one = 1; | |
337 | } | |
338 | if (!saw_one || type != CPP_PRAGMA_EOL) | |
339 | { | |
340 | error ("malformed #pragma disinterrupt"); | |
341 | return; | |
342 | } | |
343 | } | |
344 | ||
345 | static void | |
346 | mep_pragma_coprocessor (cpp_reader *reader ATTRIBUTE_UNUSED) | |
347 | { | |
348 | tree val; | |
349 | enum cpp_ttype type; | |
350 | ||
351 | type = mep_pragma_lex (&val); | |
352 | if (type != CPP_NAME) | |
353 | { | |
354 | error ("malformed #pragma GCC coprocessor"); | |
355 | return; | |
356 | } | |
357 | ||
358 | if (!TARGET_COP) | |
359 | error ("coprocessor not enabled"); | |
360 | ||
361 | if (strcmp (IDENTIFIER_POINTER (val), "available") == 0) | |
362 | mep_pragma_coprocessor_which (CW_AVAILABLE); | |
363 | else if (strcmp (IDENTIFIER_POINTER (val), "call_saved") == 0) | |
364 | mep_pragma_coprocessor_which (CW_CALL_SAVED); | |
365 | else if (strcmp (IDENTIFIER_POINTER (val), "width") == 0) | |
366 | mep_pragma_coprocessor_width (); | |
367 | else if (strcmp (IDENTIFIER_POINTER (val), "subclass") == 0) | |
368 | mep_pragma_coprocessor_subclass (); | |
369 | else | |
370 | error ("unknown #pragma GCC coprocessor %E", val); | |
371 | } | |
372 | ||
373 | static void | |
374 | mep_pragma_call (cpp_reader *reader ATTRIBUTE_UNUSED) | |
375 | { | |
376 | tree val; | |
377 | enum cpp_ttype type; | |
378 | int saw_one = 0; | |
379 | ||
380 | for (;;) | |
381 | { | |
382 | type = mep_pragma_lex (&val); | |
383 | if (type == CPP_COMMA) | |
384 | continue; | |
385 | if (type != CPP_NAME) | |
386 | break; | |
387 | mep_note_pragma_call (IDENTIFIER_POINTER (val)); | |
388 | saw_one = 1; | |
389 | } | |
390 | if (!saw_one || type != CPP_PRAGMA_EOL) | |
391 | { | |
392 | error ("malformed #pragma call"); | |
393 | return; | |
394 | } | |
395 | } | |
396 | ||
397 | void | |
398 | mep_register_pragmas (void) | |
399 | { | |
400 | c_register_pragma ("custom", "io_volatile", mep_pragma_io_volatile); | |
401 | c_register_pragma ("GCC", "coprocessor", mep_pragma_coprocessor); | |
402 | c_register_pragma (0, "disinterrupt", mep_pragma_disinterrupt); | |
403 | c_register_pragma (0, "call", mep_pragma_call); | |
404 | } |