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[deliverable/binutils-gdb.git] / gdb / mn10300-linux-tdep.c
1 /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
2
3 Copyright (C) 2003-2017 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #include "defs.h"
21 #include "gdbcore.h"
22 #include "regcache.h"
23 #include "mn10300-tdep.h"
24 #include "bfd.h"
25 #include "elf-bfd.h"
26 #include "osabi.h"
27 #include "regset.h"
28 #include "solib-svr4.h"
29 #include "frame.h"
30 #include "trad-frame.h"
31 #include "tramp-frame.h"
32 #include "linux-tdep.h"
33
34 /* Transliterated from <asm-mn10300/elf.h>... */
35 #define MN10300_ELF_NGREG 28
36 #define MN10300_ELF_NFPREG 32
37
38 typedef gdb_byte mn10300_elf_greg_t[4];
39 typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
40
41 typedef gdb_byte mn10300_elf_fpreg_t[4];
42 typedef struct
43 {
44 mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG];
45 gdb_byte fpcr[4];
46 } mn10300_elf_fpregset_t;
47
48 /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */
49 #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0
50 #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1
51 #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2
52 #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3
53 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4
54 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5
55 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6
56 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7
57 #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8
58 #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9
59 #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10
60 #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11
61 #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12
62 #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13
63 #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14
64 #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15
65 #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16
66 #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17
67 #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18
68 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19
69 #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20
70 #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21
71 #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22
72 #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23
73 #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24
74 #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25
75 #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26
76
77 /* New gdbarch API for corefile registers.
78 Given a section name and size, create a struct reg object
79 with a supply_register and a collect_register method. */
80
81 /* Copy register value of REGNUM from regset to regcache.
82 If REGNUM is -1, do this for all gp registers in regset. */
83
84 static void
85 am33_supply_gregset_method (const struct regset *regset,
86 struct regcache *regcache,
87 int regnum, const void *gregs, size_t len)
88 {
89 char zerobuf[MAX_REGISTER_SIZE];
90 const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
91 int i;
92
93 gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
94
95 switch (regnum) {
96 case E_D0_REGNUM:
97 regcache_raw_supply (regcache, E_D0_REGNUM,
98 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
99 break;
100 case E_D1_REGNUM:
101 regcache_raw_supply (regcache, E_D1_REGNUM,
102 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
103 break;
104 case E_D2_REGNUM:
105 regcache_raw_supply (regcache, E_D2_REGNUM,
106 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
107 break;
108 case E_D3_REGNUM:
109 regcache_raw_supply (regcache, E_D3_REGNUM,
110 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
111 break;
112 case E_A0_REGNUM:
113 regcache_raw_supply (regcache, E_A0_REGNUM,
114 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
115 break;
116 case E_A1_REGNUM:
117 regcache_raw_supply (regcache, E_A1_REGNUM,
118 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
119 break;
120 case E_A2_REGNUM:
121 regcache_raw_supply (regcache, E_A2_REGNUM,
122 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
123 break;
124 case E_A3_REGNUM:
125 regcache_raw_supply (regcache, E_A3_REGNUM,
126 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
127 break;
128 case E_SP_REGNUM:
129 regcache_raw_supply (regcache, E_SP_REGNUM,
130 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
131 break;
132 case E_PC_REGNUM:
133 regcache_raw_supply (regcache, E_PC_REGNUM,
134 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
135 break;
136 case E_MDR_REGNUM:
137 regcache_raw_supply (regcache, E_MDR_REGNUM,
138 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
139 break;
140 case E_PSW_REGNUM:
141 regcache_raw_supply (regcache, E_PSW_REGNUM,
142 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
143 break;
144 case E_LIR_REGNUM:
145 regcache_raw_supply (regcache, E_LIR_REGNUM,
146 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
147 break;
148 case E_LAR_REGNUM:
149 regcache_raw_supply (regcache, E_LAR_REGNUM,
150 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
151 break;
152 case E_MDRQ_REGNUM:
153 regcache_raw_supply (regcache, E_MDRQ_REGNUM,
154 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
155 break;
156 case E_E0_REGNUM:
157 regcache_raw_supply (regcache, E_E0_REGNUM,
158 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
159 break;
160 case E_E1_REGNUM:
161 regcache_raw_supply (regcache, E_E1_REGNUM,
162 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
163 break;
164 case E_E2_REGNUM:
165 regcache_raw_supply (regcache, E_E2_REGNUM,
166 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
167 break;
168 case E_E3_REGNUM:
169 regcache_raw_supply (regcache, E_E3_REGNUM,
170 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
171 break;
172 case E_E4_REGNUM:
173 regcache_raw_supply (regcache, E_E4_REGNUM,
174 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
175 break;
176 case E_E5_REGNUM:
177 regcache_raw_supply (regcache, E_E5_REGNUM,
178 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
179 break;
180 case E_E6_REGNUM:
181 regcache_raw_supply (regcache, E_E6_REGNUM,
182 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
183 break;
184 case E_E7_REGNUM:
185 regcache_raw_supply (regcache, E_E7_REGNUM,
186 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
187 break;
188
189 /* ssp, msp, and usp are inaccessible. */
190 case E_E8_REGNUM:
191 memset (zerobuf, 0, MAX_REGISTER_SIZE);
192 regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf);
193 break;
194 case E_E9_REGNUM:
195 memset (zerobuf, 0, MAX_REGISTER_SIZE);
196 regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf);
197 break;
198 case E_E10_REGNUM:
199 memset (zerobuf, 0, MAX_REGISTER_SIZE);
200 regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf);
201
202 break;
203 case E_MCRH_REGNUM:
204 regcache_raw_supply (regcache, E_MCRH_REGNUM,
205 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
206 break;
207 case E_MCRL_REGNUM:
208 regcache_raw_supply (regcache, E_MCRL_REGNUM,
209 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
210 break;
211 case E_MCVF_REGNUM:
212 regcache_raw_supply (regcache, E_MCVF_REGNUM,
213 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
214 break;
215 case E_FPCR_REGNUM:
216 /* FPCR is numbered among the GP regs, but handled as an FP reg.
217 Do nothing. */
218 break;
219 case E_FPCR_REGNUM + 1:
220 /* The two unused registers beyond fpcr are inaccessible. */
221 memset (zerobuf, 0, MAX_REGISTER_SIZE);
222 regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf);
223 break;
224 case E_FPCR_REGNUM + 2:
225 memset (zerobuf, 0, MAX_REGISTER_SIZE);
226 regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf);
227 break;
228 default: /* An error, obviously, but should we error out? */
229 break;
230 case -1:
231 for (i = 0; i < MN10300_ELF_NGREG; i++)
232 am33_supply_gregset_method (regset, regcache, i, gregs, len);
233 break;
234 }
235 return;
236 }
237
238 /* Copy fp register value of REGNUM from regset to regcache.
239 If REGNUM is -1, do this for all fp registers in regset. */
240
241 static void
242 am33_supply_fpregset_method (const struct regset *regset,
243 struct regcache *regcache,
244 int regnum, const void *fpregs, size_t len)
245 {
246 const mn10300_elf_fpregset_t *fpregset
247 = (const mn10300_elf_fpregset_t *) fpregs;
248
249 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
250
251 if (regnum == -1)
252 {
253 int i;
254
255 for (i = 0; i < MN10300_ELF_NFPREG; i++)
256 am33_supply_fpregset_method (regset, regcache,
257 E_FS0_REGNUM + i, fpregs, len);
258 am33_supply_fpregset_method (regset, regcache,
259 E_FPCR_REGNUM, fpregs, len);
260 }
261 else if (regnum == E_FPCR_REGNUM)
262 regcache_raw_supply (regcache, E_FPCR_REGNUM,
263 &fpregset->fpcr);
264 else if (E_FS0_REGNUM <= regnum
265 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
266 regcache_raw_supply (regcache, regnum,
267 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
268
269 return;
270 }
271
272 /* Copy register values from regcache to regset. */
273
274 static void
275 am33_collect_gregset_method (const struct regset *regset,
276 const struct regcache *regcache,
277 int regnum, void *gregs, size_t len)
278 {
279 mn10300_elf_gregset_t *regp = (gdb_byte (*)[28][4]) gregs;
280 int i;
281
282 gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
283
284 switch (regnum) {
285 case E_D0_REGNUM:
286 regcache_raw_collect (regcache, E_D0_REGNUM,
287 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
288 break;
289 case E_D1_REGNUM:
290 regcache_raw_collect (regcache, E_D1_REGNUM,
291 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
292 break;
293 case E_D2_REGNUM:
294 regcache_raw_collect (regcache, E_D2_REGNUM,
295 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
296 break;
297 case E_D3_REGNUM:
298 regcache_raw_collect (regcache, E_D3_REGNUM,
299 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
300 break;
301 case E_A0_REGNUM:
302 regcache_raw_collect (regcache, E_A0_REGNUM,
303 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
304 break;
305 case E_A1_REGNUM:
306 regcache_raw_collect (regcache, E_A1_REGNUM,
307 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
308 break;
309 case E_A2_REGNUM:
310 regcache_raw_collect (regcache, E_A2_REGNUM,
311 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
312 break;
313 case E_A3_REGNUM:
314 regcache_raw_collect (regcache, E_A3_REGNUM,
315 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
316 break;
317 case E_SP_REGNUM:
318 regcache_raw_collect (regcache, E_SP_REGNUM,
319 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
320 break;
321 case E_PC_REGNUM:
322 regcache_raw_collect (regcache, E_PC_REGNUM,
323 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
324 break;
325 case E_MDR_REGNUM:
326 regcache_raw_collect (regcache, E_MDR_REGNUM,
327 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
328 break;
329 case E_PSW_REGNUM:
330 regcache_raw_collect (regcache, E_PSW_REGNUM,
331 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
332 break;
333 case E_LIR_REGNUM:
334 regcache_raw_collect (regcache, E_LIR_REGNUM,
335 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
336 break;
337 case E_LAR_REGNUM:
338 regcache_raw_collect (regcache, E_LAR_REGNUM,
339 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
340 break;
341 case E_MDRQ_REGNUM:
342 regcache_raw_collect (regcache, E_MDRQ_REGNUM,
343 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
344 break;
345 case E_E0_REGNUM:
346 regcache_raw_collect (regcache, E_E0_REGNUM,
347 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
348 break;
349 case E_E1_REGNUM:
350 regcache_raw_collect (regcache, E_E1_REGNUM,
351 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
352 break;
353 case E_E2_REGNUM:
354 regcache_raw_collect (regcache, E_E2_REGNUM,
355 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
356 break;
357 case E_E3_REGNUM:
358 regcache_raw_collect (regcache, E_E3_REGNUM,
359 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
360 break;
361 case E_E4_REGNUM:
362 regcache_raw_collect (regcache, E_E4_REGNUM,
363 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
364 break;
365 case E_E5_REGNUM:
366 regcache_raw_collect (regcache, E_E5_REGNUM,
367 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
368 break;
369 case E_E6_REGNUM:
370 regcache_raw_collect (regcache, E_E6_REGNUM,
371 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
372 break;
373 case E_E7_REGNUM:
374 regcache_raw_collect (regcache, E_E7_REGNUM,
375 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
376 break;
377
378 /* ssp, msp, and usp are inaccessible. */
379 case E_E8_REGNUM:
380 /* The gregset struct has noplace to put this: do nothing. */
381 break;
382 case E_E9_REGNUM:
383 /* The gregset struct has noplace to put this: do nothing. */
384 break;
385 case E_E10_REGNUM:
386 /* The gregset struct has noplace to put this: do nothing. */
387 break;
388 case E_MCRH_REGNUM:
389 regcache_raw_collect (regcache, E_MCRH_REGNUM,
390 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
391 break;
392 case E_MCRL_REGNUM:
393 regcache_raw_collect (regcache, E_MCRL_REGNUM,
394 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
395 break;
396 case E_MCVF_REGNUM:
397 regcache_raw_collect (regcache, E_MCVF_REGNUM,
398 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
399 break;
400 case E_FPCR_REGNUM:
401 /* FPCR is numbered among the GP regs, but handled as an FP reg.
402 Do nothing. */
403 break;
404 case E_FPCR_REGNUM + 1:
405 /* The gregset struct has noplace to put this: do nothing. */
406 break;
407 case E_FPCR_REGNUM + 2:
408 /* The gregset struct has noplace to put this: do nothing. */
409 break;
410 default: /* An error, obviously, but should we error out? */
411 break;
412 case -1:
413 for (i = 0; i < MN10300_ELF_NGREG; i++)
414 am33_collect_gregset_method (regset, regcache, i, gregs, len);
415 break;
416 }
417 return;
418 }
419
420 /* Copy fp register values from regcache to regset. */
421
422 static void
423 am33_collect_fpregset_method (const struct regset *regset,
424 const struct regcache *regcache,
425 int regnum, void *fpregs, size_t len)
426 {
427 mn10300_elf_fpregset_t *fpregset = (mn10300_elf_fpregset_t *) fpregs;
428
429 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
430
431 if (regnum == -1)
432 {
433 int i;
434 for (i = 0; i < MN10300_ELF_NFPREG; i++)
435 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
436 fpregs, len);
437 am33_collect_fpregset_method (regset, regcache,
438 E_FPCR_REGNUM, fpregs, len);
439 }
440 else if (regnum == E_FPCR_REGNUM)
441 regcache_raw_collect (regcache, E_FPCR_REGNUM,
442 &fpregset->fpcr);
443 else if (E_FS0_REGNUM <= regnum
444 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
445 regcache_raw_collect (regcache, regnum,
446 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
447
448 return;
449 }
450
451 static const struct regset am33_gregset =
452 {
453 NULL, am33_supply_gregset_method, am33_collect_gregset_method
454 };
455
456 static const struct regset am33_fpregset =
457 {
458 NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
459 };
460
461 /* Iterate over core file register note sections. */
462
463 static void
464 am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
465 iterate_over_regset_sections_cb *cb,
466 void *cb_data,
467 const struct regcache *regcache)
468 {
469 cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset,
470 NULL, cb_data);
471 cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset,
472 NULL, cb_data);
473 }
474 \f
475 static void
476 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
477 struct frame_info *this_frame,
478 struct trad_frame_cache *this_cache,
479 CORE_ADDR func);
480
481 static const struct tramp_frame am33_linux_sigframe = {
482 SIGTRAMP_FRAME,
483 1,
484 {
485 /* mov 119,d0 */
486 { 0x2c, -1 },
487 { 0x77, -1 },
488 { 0x00, -1 },
489 /* syscall 0 */
490 { 0xf0, -1 },
491 { 0xe0, -1 },
492 { TRAMP_SENTINEL_INSN, -1 }
493 },
494 am33_linux_sigframe_cache_init
495 };
496
497 static const struct tramp_frame am33_linux_rt_sigframe = {
498 SIGTRAMP_FRAME,
499 1,
500 {
501 /* mov 173,d0 */
502 { 0x2c, -1 },
503 { 0xad, -1 },
504 { 0x00, -1 },
505 /* syscall 0 */
506 { 0xf0, -1 },
507 { 0xe0, -1 },
508 { TRAMP_SENTINEL_INSN, -1 }
509 },
510 am33_linux_sigframe_cache_init
511 };
512
513 /* Relevant struct definitions for signal handling...
514
515 From arch/mn10300/kernel/sigframe.h:
516
517 struct sigframe
518 {
519 void (*pretcode)(void);
520 int sig;
521 struct sigcontext *psc;
522 struct sigcontext sc;
523 struct fpucontext fpuctx;
524 unsigned long extramask[_NSIG_WORDS-1];
525 char retcode[8];
526 };
527
528 struct rt_sigframe
529 {
530 void (*pretcode)(void);
531 int sig;
532 struct siginfo *pinfo;
533 void *puc;
534 struct siginfo info;
535 struct ucontext uc;
536 struct fpucontext fpuctx;
537 char retcode[8];
538 };
539
540 From include/asm-mn10300/ucontext.h:
541
542 struct ucontext {
543 unsigned long uc_flags;
544 struct ucontext *uc_link;
545 stack_t uc_stack;
546 struct sigcontext uc_mcontext;
547 sigset_t uc_sigmask;
548 };
549
550 From include/asm-mn10300/sigcontext.h:
551
552 struct fpucontext {
553 unsigned long fs[32];
554 unsigned long fpcr;
555 };
556
557 struct sigcontext {
558 unsigned long d0;
559 unsigned long d1;
560 unsigned long d2;
561 unsigned long d3;
562 unsigned long a0;
563 unsigned long a1;
564 unsigned long a2;
565 unsigned long a3;
566 unsigned long e0;
567 unsigned long e1;
568 unsigned long e2;
569 unsigned long e3;
570 unsigned long e4;
571 unsigned long e5;
572 unsigned long e6;
573 unsigned long e7;
574 unsigned long lar;
575 unsigned long lir;
576 unsigned long mdr;
577 unsigned long mcvf;
578 unsigned long mcrl;
579 unsigned long mcrh;
580 unsigned long mdrq;
581 unsigned long sp;
582 unsigned long epsw;
583 unsigned long pc;
584 struct fpucontext *fpucontext;
585 unsigned long oldmask;
586 }; */
587
588
589 #define AM33_SIGCONTEXT_D0 0
590 #define AM33_SIGCONTEXT_D1 4
591 #define AM33_SIGCONTEXT_D2 8
592 #define AM33_SIGCONTEXT_D3 12
593 #define AM33_SIGCONTEXT_A0 16
594 #define AM33_SIGCONTEXT_A1 20
595 #define AM33_SIGCONTEXT_A2 24
596 #define AM33_SIGCONTEXT_A3 28
597 #define AM33_SIGCONTEXT_E0 32
598 #define AM33_SIGCONTEXT_E1 36
599 #define AM33_SIGCONTEXT_E2 40
600 #define AM33_SIGCONTEXT_E3 44
601 #define AM33_SIGCONTEXT_E4 48
602 #define AM33_SIGCONTEXT_E5 52
603 #define AM33_SIGCONTEXT_E6 56
604 #define AM33_SIGCONTEXT_E7 60
605 #define AM33_SIGCONTEXT_LAR 64
606 #define AM33_SIGCONTEXT_LIR 68
607 #define AM33_SIGCONTEXT_MDR 72
608 #define AM33_SIGCONTEXT_MCVF 76
609 #define AM33_SIGCONTEXT_MCRL 80
610 #define AM33_SIGCONTEXT_MCRH 84
611 #define AM33_SIGCONTEXT_MDRQ 88
612 #define AM33_SIGCONTEXT_SP 92
613 #define AM33_SIGCONTEXT_EPSW 96
614 #define AM33_SIGCONTEXT_PC 100
615 #define AM33_SIGCONTEXT_FPUCONTEXT 104
616
617
618 static void
619 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
620 struct frame_info *this_frame,
621 struct trad_frame_cache *this_cache,
622 CORE_ADDR func)
623 {
624 CORE_ADDR sc_base, fpubase;
625 int i;
626
627 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
628 if (self == &am33_linux_sigframe)
629 {
630 sc_base += 8;
631 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
632 }
633 else
634 {
635 sc_base += 12;
636 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
637 sc_base += 20;
638 }
639
640 trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
641 sc_base + AM33_SIGCONTEXT_D0);
642 trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
643 sc_base + AM33_SIGCONTEXT_D1);
644 trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
645 sc_base + AM33_SIGCONTEXT_D2);
646 trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
647 sc_base + AM33_SIGCONTEXT_D3);
648
649 trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
650 sc_base + AM33_SIGCONTEXT_A0);
651 trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
652 sc_base + AM33_SIGCONTEXT_A1);
653 trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
654 sc_base + AM33_SIGCONTEXT_A2);
655 trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
656 sc_base + AM33_SIGCONTEXT_A3);
657
658 trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
659 sc_base + AM33_SIGCONTEXT_E0);
660 trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
661 sc_base + AM33_SIGCONTEXT_E1);
662 trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
663 sc_base + AM33_SIGCONTEXT_E2);
664 trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
665 sc_base + AM33_SIGCONTEXT_E3);
666 trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
667 sc_base + AM33_SIGCONTEXT_E4);
668 trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
669 sc_base + AM33_SIGCONTEXT_E5);
670 trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
671 sc_base + AM33_SIGCONTEXT_E6);
672 trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
673 sc_base + AM33_SIGCONTEXT_E7);
674
675 trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
676 sc_base + AM33_SIGCONTEXT_LAR);
677 trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
678 sc_base + AM33_SIGCONTEXT_LIR);
679 trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
680 sc_base + AM33_SIGCONTEXT_MDR);
681 trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
682 sc_base + AM33_SIGCONTEXT_MCVF);
683 trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
684 sc_base + AM33_SIGCONTEXT_MCRL);
685 trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
686 sc_base + AM33_SIGCONTEXT_MDRQ);
687
688 trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
689 sc_base + AM33_SIGCONTEXT_SP);
690 trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
691 sc_base + AM33_SIGCONTEXT_EPSW);
692 trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
693 sc_base + AM33_SIGCONTEXT_PC);
694
695 fpubase = get_frame_memory_unsigned (this_frame,
696 sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
697 4);
698 if (fpubase)
699 {
700 for (i = 0; i < 32; i++)
701 {
702 trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
703 fpubase + 4 * i);
704 }
705 trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
706 }
707
708 trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
709 }
710 \f
711 /* AM33 GNU/Linux osabi has been recognized.
712 Now's our chance to register our corefile handling. */
713
714 static void
715 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
716 {
717 linux_init_abi (info, gdbarch);
718
719 set_gdbarch_iterate_over_regset_sections
720 (gdbarch, am33_iterate_over_regset_sections);
721 set_solib_svr4_fetch_link_map_offsets
722 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
723
724 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
725 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
726 }
727
728 /* Provide a prototype to silence -Wmissing-prototypes. */
729 extern initialize_file_ftype _initialize_mn10300_linux_tdep;
730
731 void
732 _initialize_mn10300_linux_tdep (void)
733 {
734 gdbarch_register_osabi (bfd_arch_mn10300, 0,
735 GDB_OSABI_LINUX, am33_linux_init_osabi);
736 }
737
GDB Binutils - Deliverables
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