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[thirdparty/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) 2003-2015 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 = fpregs;
247
248 gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
249
250 if (regnum == -1)
251 {
252 int i;
253
254 for (i = 0; i < MN10300_ELF_NFPREG; i++)
255 am33_supply_fpregset_method (regset, regcache,
256 E_FS0_REGNUM + i, fpregs, len);
257 am33_supply_fpregset_method (regset, regcache,
258 E_FPCR_REGNUM, fpregs, len);
259 }
260 else if (regnum == E_FPCR_REGNUM)
261 regcache_raw_supply (regcache, E_FPCR_REGNUM,
262 &fpregset->fpcr);
263 else if (E_FS0_REGNUM <= regnum
264 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
265 regcache_raw_supply (regcache, regnum,
266 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
267
268 return;
269 }
270
271 /* Copy register values from regcache to regset. */
272
273 static void
274 am33_collect_gregset_method (const struct regset *regset,
275 const struct regcache *regcache,
276 int regnum, void *gregs, size_t len)
277 {
278 mn10300_elf_gregset_t *regp = gregs;
279 int i;
280
281 gdb_assert (len == sizeof (mn10300_elf_gregset_t));
282
283 switch (regnum) {
284 case E_D0_REGNUM:
285 regcache_raw_collect (regcache, E_D0_REGNUM,
286 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
287 break;
288 case E_D1_REGNUM:
289 regcache_raw_collect (regcache, E_D1_REGNUM,
290 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
291 break;
292 case E_D2_REGNUM:
293 regcache_raw_collect (regcache, E_D2_REGNUM,
294 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
295 break;
296 case E_D3_REGNUM:
297 regcache_raw_collect (regcache, E_D3_REGNUM,
298 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
299 break;
300 case E_A0_REGNUM:
301 regcache_raw_collect (regcache, E_A0_REGNUM,
302 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
303 break;
304 case E_A1_REGNUM:
305 regcache_raw_collect (regcache, E_A1_REGNUM,
306 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
307 break;
308 case E_A2_REGNUM:
309 regcache_raw_collect (regcache, E_A2_REGNUM,
310 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
311 break;
312 case E_A3_REGNUM:
313 regcache_raw_collect (regcache, E_A3_REGNUM,
314 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
315 break;
316 case E_SP_REGNUM:
317 regcache_raw_collect (regcache, E_SP_REGNUM,
318 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
319 break;
320 case E_PC_REGNUM:
321 regcache_raw_collect (regcache, E_PC_REGNUM,
322 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
323 break;
324 case E_MDR_REGNUM:
325 regcache_raw_collect (regcache, E_MDR_REGNUM,
326 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
327 break;
328 case E_PSW_REGNUM:
329 regcache_raw_collect (regcache, E_PSW_REGNUM,
330 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
331 break;
332 case E_LIR_REGNUM:
333 regcache_raw_collect (regcache, E_LIR_REGNUM,
334 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
335 break;
336 case E_LAR_REGNUM:
337 regcache_raw_collect (regcache, E_LAR_REGNUM,
338 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
339 break;
340 case E_MDRQ_REGNUM:
341 regcache_raw_collect (regcache, E_MDRQ_REGNUM,
342 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
343 break;
344 case E_E0_REGNUM:
345 regcache_raw_collect (regcache, E_E0_REGNUM,
346 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
347 break;
348 case E_E1_REGNUM:
349 regcache_raw_collect (regcache, E_E1_REGNUM,
350 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
351 break;
352 case E_E2_REGNUM:
353 regcache_raw_collect (regcache, E_E2_REGNUM,
354 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
355 break;
356 case E_E3_REGNUM:
357 regcache_raw_collect (regcache, E_E3_REGNUM,
358 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
359 break;
360 case E_E4_REGNUM:
361 regcache_raw_collect (regcache, E_E4_REGNUM,
362 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
363 break;
364 case E_E5_REGNUM:
365 regcache_raw_collect (regcache, E_E5_REGNUM,
366 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
367 break;
368 case E_E6_REGNUM:
369 regcache_raw_collect (regcache, E_E6_REGNUM,
370 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
371 break;
372 case E_E7_REGNUM:
373 regcache_raw_collect (regcache, E_E7_REGNUM,
374 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
375 break;
376
377 /* ssp, msp, and usp are inaccessible. */
378 case E_E8_REGNUM:
379 /* The gregset struct has noplace to put this: do nothing. */
380 break;
381 case E_E9_REGNUM:
382 /* The gregset struct has noplace to put this: do nothing. */
383 break;
384 case E_E10_REGNUM:
385 /* The gregset struct has noplace to put this: do nothing. */
386 break;
387 case E_MCRH_REGNUM:
388 regcache_raw_collect (regcache, E_MCRH_REGNUM,
389 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
390 break;
391 case E_MCRL_REGNUM:
392 regcache_raw_collect (regcache, E_MCRL_REGNUM,
393 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
394 break;
395 case E_MCVF_REGNUM:
396 regcache_raw_collect (regcache, E_MCVF_REGNUM,
397 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
398 break;
399 case E_FPCR_REGNUM:
400 /* FPCR is numbered among the GP regs, but handled as an FP reg.
401 Do nothing. */
402 break;
403 case E_FPCR_REGNUM + 1:
404 /* The gregset struct has noplace to put this: do nothing. */
405 break;
406 case E_FPCR_REGNUM + 2:
407 /* The gregset struct has noplace to put this: do nothing. */
408 break;
409 default: /* An error, obviously, but should we error out? */
410 break;
411 case -1:
412 for (i = 0; i < MN10300_ELF_NGREG; i++)
413 am33_collect_gregset_method (regset, regcache, i, gregs, len);
414 break;
415 }
416 return;
417 }
418
419 /* Copy fp register values from regcache to regset. */
420
421 static void
422 am33_collect_fpregset_method (const struct regset *regset,
423 const struct regcache *regcache,
424 int regnum, void *fpregs, size_t len)
425 {
426 mn10300_elf_fpregset_t *fpregset = fpregs;
427
428 gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
429
430 if (regnum == -1)
431 {
432 int i;
433 for (i = 0; i < MN10300_ELF_NFPREG; i++)
434 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
435 fpregs, len);
436 am33_collect_fpregset_method (regset, regcache,
437 E_FPCR_REGNUM, fpregs, len);
438 }
439 else if (regnum == E_FPCR_REGNUM)
440 regcache_raw_collect (regcache, E_FPCR_REGNUM,
441 &fpregset->fpcr);
442 else if (E_FS0_REGNUM <= regnum
443 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
444 regcache_raw_collect (regcache, regnum,
445 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
446
447 return;
448 }
449
450 static const struct regset am33_gregset =
451 {
452 NULL, am33_supply_gregset_method, am33_collect_gregset_method
453 };
454
455 static const struct regset am33_fpregset =
456 {
457 NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
458 };
459
460 /* Iterate over core file register note sections. */
461
462 static void
463 am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
464 iterate_over_regset_sections_cb *cb,
465 void *cb_data,
466 const struct regcache *regcache)
467 {
468 cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset,
469 NULL, cb_data);
470 cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset,
471 NULL, cb_data);
472 }
473 \f
474 static void
475 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
476 struct frame_info *this_frame,
477 struct trad_frame_cache *this_cache,
478 CORE_ADDR func);
479
480 static const struct tramp_frame am33_linux_sigframe = {
481 SIGTRAMP_FRAME,
482 1,
483 {
484 /* mov 119,d0 */
485 { 0x2c, -1 },
486 { 0x77, -1 },
487 { 0x00, -1 },
488 /* syscall 0 */
489 { 0xf0, -1 },
490 { 0xe0, -1 },
491 { TRAMP_SENTINEL_INSN, -1 }
492 },
493 am33_linux_sigframe_cache_init
494 };
495
496 static const struct tramp_frame am33_linux_rt_sigframe = {
497 SIGTRAMP_FRAME,
498 1,
499 {
500 /* mov 173,d0 */
501 { 0x2c, -1 },
502 { 0xad, -1 },
503 { 0x00, -1 },
504 /* syscall 0 */
505 { 0xf0, -1 },
506 { 0xe0, -1 },
507 { TRAMP_SENTINEL_INSN, -1 }
508 },
509 am33_linux_sigframe_cache_init
510 };
511
512 /* Relevant struct definitions for signal handling...
513
514 From arch/mn10300/kernel/sigframe.h:
515
516 struct sigframe
517 {
518 void (*pretcode)(void);
519 int sig;
520 struct sigcontext *psc;
521 struct sigcontext sc;
522 struct fpucontext fpuctx;
523 unsigned long extramask[_NSIG_WORDS-1];
524 char retcode[8];
525 };
526
527 struct rt_sigframe
528 {
529 void (*pretcode)(void);
530 int sig;
531 struct siginfo *pinfo;
532 void *puc;
533 struct siginfo info;
534 struct ucontext uc;
535 struct fpucontext fpuctx;
536 char retcode[8];
537 };
538
539 From include/asm-mn10300/ucontext.h:
540
541 struct ucontext {
542 unsigned long uc_flags;
543 struct ucontext *uc_link;
544 stack_t uc_stack;
545 struct sigcontext uc_mcontext;
546 sigset_t uc_sigmask;
547 };
548
549 From include/asm-mn10300/sigcontext.h:
550
551 struct fpucontext {
552 unsigned long fs[32];
553 unsigned long fpcr;
554 };
555
556 struct sigcontext {
557 unsigned long d0;
558 unsigned long d1;
559 unsigned long d2;
560 unsigned long d3;
561 unsigned long a0;
562 unsigned long a1;
563 unsigned long a2;
564 unsigned long a3;
565 unsigned long e0;
566 unsigned long e1;
567 unsigned long e2;
568 unsigned long e3;
569 unsigned long e4;
570 unsigned long e5;
571 unsigned long e6;
572 unsigned long e7;
573 unsigned long lar;
574 unsigned long lir;
575 unsigned long mdr;
576 unsigned long mcvf;
577 unsigned long mcrl;
578 unsigned long mcrh;
579 unsigned long mdrq;
580 unsigned long sp;
581 unsigned long epsw;
582 unsigned long pc;
583 struct fpucontext *fpucontext;
584 unsigned long oldmask;
585 }; */
586
587
588 #define AM33_SIGCONTEXT_D0 0
589 #define AM33_SIGCONTEXT_D1 4
590 #define AM33_SIGCONTEXT_D2 8
591 #define AM33_SIGCONTEXT_D3 12
592 #define AM33_SIGCONTEXT_A0 16
593 #define AM33_SIGCONTEXT_A1 20
594 #define AM33_SIGCONTEXT_A2 24
595 #define AM33_SIGCONTEXT_A3 28
596 #define AM33_SIGCONTEXT_E0 32
597 #define AM33_SIGCONTEXT_E1 36
598 #define AM33_SIGCONTEXT_E2 40
599 #define AM33_SIGCONTEXT_E3 44
600 #define AM33_SIGCONTEXT_E4 48
601 #define AM33_SIGCONTEXT_E5 52
602 #define AM33_SIGCONTEXT_E6 56
603 #define AM33_SIGCONTEXT_E7 60
604 #define AM33_SIGCONTEXT_LAR 64
605 #define AM33_SIGCONTEXT_LIR 68
606 #define AM33_SIGCONTEXT_MDR 72
607 #define AM33_SIGCONTEXT_MCVF 76
608 #define AM33_SIGCONTEXT_MCRL 80
609 #define AM33_SIGCONTEXT_MCRH 84
610 #define AM33_SIGCONTEXT_MDRQ 88
611 #define AM33_SIGCONTEXT_SP 92
612 #define AM33_SIGCONTEXT_EPSW 96
613 #define AM33_SIGCONTEXT_PC 100
614 #define AM33_SIGCONTEXT_FPUCONTEXT 104
615
616
617 static void
618 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
619 struct frame_info *this_frame,
620 struct trad_frame_cache *this_cache,
621 CORE_ADDR func)
622 {
623 CORE_ADDR sc_base, fpubase;
624 int i;
625
626 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
627 if (self == &am33_linux_sigframe)
628 {
629 sc_base += 8;
630 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
631 }
632 else
633 {
634 sc_base += 12;
635 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
636 sc_base += 20;
637 }
638
639 trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
640 sc_base + AM33_SIGCONTEXT_D0);
641 trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
642 sc_base + AM33_SIGCONTEXT_D1);
643 trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
644 sc_base + AM33_SIGCONTEXT_D2);
645 trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
646 sc_base + AM33_SIGCONTEXT_D3);
647
648 trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
649 sc_base + AM33_SIGCONTEXT_A0);
650 trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
651 sc_base + AM33_SIGCONTEXT_A1);
652 trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
653 sc_base + AM33_SIGCONTEXT_A2);
654 trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
655 sc_base + AM33_SIGCONTEXT_A3);
656
657 trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
658 sc_base + AM33_SIGCONTEXT_E0);
659 trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
660 sc_base + AM33_SIGCONTEXT_E1);
661 trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
662 sc_base + AM33_SIGCONTEXT_E2);
663 trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
664 sc_base + AM33_SIGCONTEXT_E3);
665 trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
666 sc_base + AM33_SIGCONTEXT_E4);
667 trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
668 sc_base + AM33_SIGCONTEXT_E5);
669 trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
670 sc_base + AM33_SIGCONTEXT_E6);
671 trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
672 sc_base + AM33_SIGCONTEXT_E7);
673
674 trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
675 sc_base + AM33_SIGCONTEXT_LAR);
676 trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
677 sc_base + AM33_SIGCONTEXT_LIR);
678 trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
679 sc_base + AM33_SIGCONTEXT_MDR);
680 trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
681 sc_base + AM33_SIGCONTEXT_MCVF);
682 trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
683 sc_base + AM33_SIGCONTEXT_MCRL);
684 trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
685 sc_base + AM33_SIGCONTEXT_MDRQ);
686
687 trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
688 sc_base + AM33_SIGCONTEXT_SP);
689 trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
690 sc_base + AM33_SIGCONTEXT_EPSW);
691 trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
692 sc_base + AM33_SIGCONTEXT_PC);
693
694 fpubase = get_frame_memory_unsigned (this_frame,
695 sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
696 4);
697 if (fpubase)
698 {
699 for (i = 0; i < 32; i++)
700 {
701 trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
702 fpubase + 4 * i);
703 }
704 trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
705 }
706
707 trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
708 }
709 \f
710 /* AM33 GNU/Linux osabi has been recognized.
711 Now's our chance to register our corefile handling. */
712
713 static void
714 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
715 {
716 linux_init_abi (info, gdbarch);
717
718 set_gdbarch_iterate_over_regset_sections
719 (gdbarch, am33_iterate_over_regset_sections);
720 set_solib_svr4_fetch_link_map_offsets
721 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
722
723 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
724 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
725 }
726
727 /* Provide a prototype to silence -Wmissing-prototypes. */
728 extern initialize_file_ftype _initialize_mn10300_linux_tdep;
729
730 void
731 _initialize_mn10300_linux_tdep (void)
732 {
733 gdbarch_register_osabi (bfd_arch_mn10300, 0,
734 GDB_OSABI_LINUX, am33_linux_init_osabi);
735 }
736
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