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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) 2003-2020 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 #include "gdbarch.h"
34
35 /* Transliterated from <asm-mn10300/elf.h>... */
36 #define MN10300_ELF_NGREG 28
37 #define MN10300_ELF_NFPREG 32
38
39 typedef gdb_byte mn10300_elf_greg_t[4];
40 typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
41
42 typedef gdb_byte mn10300_elf_fpreg_t[4];
43 typedef struct
44 {
45 mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG];
46 gdb_byte fpcr[4];
47 } mn10300_elf_fpregset_t;
48
49 /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */
50 #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0
51 #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1
52 #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2
53 #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3
54 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4
55 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5
56 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6
57 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7
58 #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8
59 #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9
60 #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10
61 #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11
62 #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12
63 #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13
64 #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14
65 #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15
66 #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16
67 #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17
68 #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18
69 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19
70 #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20
71 #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21
72 #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22
73 #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23
74 #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24
75 #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25
76 #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26
77
78 /* New gdbarch API for corefile registers.
79 Given a section name and size, create a struct reg object
80 with a supply_register and a collect_register method. */
81
82 /* Copy register value of REGNUM from regset to regcache.
83 If REGNUM is -1, do this for all gp registers in regset. */
84
85 static void
86 am33_supply_gregset_method (const struct regset *regset,
87 struct regcache *regcache,
88 int regnum, const void *gregs, size_t len)
89 {
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 (E_D0_REGNUM,
98 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
99 break;
100 case E_D1_REGNUM:
101 regcache->raw_supply (E_D1_REGNUM,
102 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
103 break;
104 case E_D2_REGNUM:
105 regcache->raw_supply (E_D2_REGNUM,
106 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
107 break;
108 case E_D3_REGNUM:
109 regcache->raw_supply (E_D3_REGNUM,
110 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
111 break;
112 case E_A0_REGNUM:
113 regcache->raw_supply (E_A0_REGNUM,
114 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
115 break;
116 case E_A1_REGNUM:
117 regcache->raw_supply (E_A1_REGNUM,
118 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
119 break;
120 case E_A2_REGNUM:
121 regcache->raw_supply (E_A2_REGNUM,
122 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
123 break;
124 case E_A3_REGNUM:
125 regcache->raw_supply (E_A3_REGNUM,
126 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
127 break;
128 case E_SP_REGNUM:
129 regcache->raw_supply (E_SP_REGNUM,
130 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
131 break;
132 case E_PC_REGNUM:
133 regcache->raw_supply (E_PC_REGNUM,
134 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
135 break;
136 case E_MDR_REGNUM:
137 regcache->raw_supply (E_MDR_REGNUM,
138 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
139 break;
140 case E_PSW_REGNUM:
141 regcache->raw_supply (E_PSW_REGNUM,
142 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
143 break;
144 case E_LIR_REGNUM:
145 regcache->raw_supply (E_LIR_REGNUM,
146 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
147 break;
148 case E_LAR_REGNUM:
149 regcache->raw_supply (E_LAR_REGNUM,
150 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
151 break;
152 case E_MDRQ_REGNUM:
153 regcache->raw_supply (E_MDRQ_REGNUM,
154 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
155 break;
156 case E_E0_REGNUM:
157 regcache->raw_supply (E_E0_REGNUM,
158 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
159 break;
160 case E_E1_REGNUM:
161 regcache->raw_supply (E_E1_REGNUM,
162 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
163 break;
164 case E_E2_REGNUM:
165 regcache->raw_supply (E_E2_REGNUM,
166 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
167 break;
168 case E_E3_REGNUM:
169 regcache->raw_supply (E_E3_REGNUM,
170 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
171 break;
172 case E_E4_REGNUM:
173 regcache->raw_supply (E_E4_REGNUM,
174 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
175 break;
176 case E_E5_REGNUM:
177 regcache->raw_supply (E_E5_REGNUM,
178 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
179 break;
180 case E_E6_REGNUM:
181 regcache->raw_supply (E_E6_REGNUM,
182 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
183 break;
184 case E_E7_REGNUM:
185 regcache->raw_supply (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 regcache->raw_supply_zeroed (E_E8_REGNUM);
192 break;
193 case E_E9_REGNUM:
194 regcache->raw_supply_zeroed (E_E9_REGNUM);
195 break;
196 case E_E10_REGNUM:
197 regcache->raw_supply_zeroed (E_E10_REGNUM);
198 break;
199 case E_MCRH_REGNUM:
200 regcache->raw_supply (E_MCRH_REGNUM,
201 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
202 break;
203 case E_MCRL_REGNUM:
204 regcache->raw_supply (E_MCRL_REGNUM,
205 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
206 break;
207 case E_MCVF_REGNUM:
208 regcache->raw_supply (E_MCVF_REGNUM,
209 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
210 break;
211 case E_FPCR_REGNUM:
212 /* FPCR is numbered among the GP regs, but handled as an FP reg.
213 Do nothing. */
214 break;
215 case E_FPCR_REGNUM + 1:
216 /* The two unused registers beyond fpcr are inaccessible. */
217 regcache->raw_supply_zeroed (E_FPCR_REGNUM + 1);
218 break;
219 case E_FPCR_REGNUM + 2:
220 regcache->raw_supply_zeroed (E_FPCR_REGNUM + 2);
221 break;
222 default: /* An error, obviously, but should we error out? */
223 break;
224 case -1:
225 for (i = 0; i < MN10300_ELF_NGREG; i++)
226 am33_supply_gregset_method (regset, regcache, i, gregs, len);
227 break;
228 }
229 return;
230 }
231
232 /* Copy fp register value of REGNUM from regset to regcache.
233 If REGNUM is -1, do this for all fp registers in regset. */
234
235 static void
236 am33_supply_fpregset_method (const struct regset *regset,
237 struct regcache *regcache,
238 int regnum, const void *fpregs, size_t len)
239 {
240 const mn10300_elf_fpregset_t *fpregset
241 = (const mn10300_elf_fpregset_t *) fpregs;
242
243 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
244
245 if (regnum == -1)
246 {
247 int i;
248
249 for (i = 0; i < MN10300_ELF_NFPREG; i++)
250 am33_supply_fpregset_method (regset, regcache,
251 E_FS0_REGNUM + i, fpregs, len);
252 am33_supply_fpregset_method (regset, regcache,
253 E_FPCR_REGNUM, fpregs, len);
254 }
255 else if (regnum == E_FPCR_REGNUM)
256 regcache->raw_supply (E_FPCR_REGNUM, &fpregset->fpcr);
257 else if (E_FS0_REGNUM <= regnum
258 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
259 regcache->raw_supply (regnum, &fpregset->fpregs[regnum - E_FS0_REGNUM]);
260
261 return;
262 }
263
264 /* Copy register values from regcache to regset. */
265
266 static void
267 am33_collect_gregset_method (const struct regset *regset,
268 const struct regcache *regcache,
269 int regnum, void *gregs, size_t len)
270 {
271 mn10300_elf_gregset_t *regp = (gdb_byte (*)[28][4]) gregs;
272 int i;
273
274 gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
275
276 switch (regnum) {
277 case E_D0_REGNUM:
278 regcache->raw_collect (E_D0_REGNUM,
279 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
280 break;
281 case E_D1_REGNUM:
282 regcache->raw_collect (E_D1_REGNUM,
283 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
284 break;
285 case E_D2_REGNUM:
286 regcache->raw_collect (E_D2_REGNUM,
287 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
288 break;
289 case E_D3_REGNUM:
290 regcache->raw_collect (E_D3_REGNUM,
291 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
292 break;
293 case E_A0_REGNUM:
294 regcache->raw_collect (E_A0_REGNUM,
295 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
296 break;
297 case E_A1_REGNUM:
298 regcache->raw_collect (E_A1_REGNUM,
299 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
300 break;
301 case E_A2_REGNUM:
302 regcache->raw_collect (E_A2_REGNUM,
303 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
304 break;
305 case E_A3_REGNUM:
306 regcache->raw_collect (E_A3_REGNUM,
307 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
308 break;
309 case E_SP_REGNUM:
310 regcache->raw_collect (E_SP_REGNUM,
311 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
312 break;
313 case E_PC_REGNUM:
314 regcache->raw_collect (E_PC_REGNUM,
315 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
316 break;
317 case E_MDR_REGNUM:
318 regcache->raw_collect (E_MDR_REGNUM,
319 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
320 break;
321 case E_PSW_REGNUM:
322 regcache->raw_collect (E_PSW_REGNUM,
323 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
324 break;
325 case E_LIR_REGNUM:
326 regcache->raw_collect (E_LIR_REGNUM,
327 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
328 break;
329 case E_LAR_REGNUM:
330 regcache->raw_collect (E_LAR_REGNUM,
331 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
332 break;
333 case E_MDRQ_REGNUM:
334 regcache->raw_collect (E_MDRQ_REGNUM,
335 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
336 break;
337 case E_E0_REGNUM:
338 regcache->raw_collect (E_E0_REGNUM,
339 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
340 break;
341 case E_E1_REGNUM:
342 regcache->raw_collect (E_E1_REGNUM,
343 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
344 break;
345 case E_E2_REGNUM:
346 regcache->raw_collect (E_E2_REGNUM,
347 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
348 break;
349 case E_E3_REGNUM:
350 regcache->raw_collect (E_E3_REGNUM,
351 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
352 break;
353 case E_E4_REGNUM:
354 regcache->raw_collect (E_E4_REGNUM,
355 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
356 break;
357 case E_E5_REGNUM:
358 regcache->raw_collect (E_E5_REGNUM,
359 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
360 break;
361 case E_E6_REGNUM:
362 regcache->raw_collect (E_E6_REGNUM,
363 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
364 break;
365 case E_E7_REGNUM:
366 regcache->raw_collect (E_E7_REGNUM,
367 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
368 break;
369
370 /* ssp, msp, and usp are inaccessible. */
371 case E_E8_REGNUM:
372 /* The gregset struct has noplace to put this: do nothing. */
373 break;
374 case E_E9_REGNUM:
375 /* The gregset struct has noplace to put this: do nothing. */
376 break;
377 case E_E10_REGNUM:
378 /* The gregset struct has noplace to put this: do nothing. */
379 break;
380 case E_MCRH_REGNUM:
381 regcache->raw_collect (E_MCRH_REGNUM,
382 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
383 break;
384 case E_MCRL_REGNUM:
385 regcache->raw_collect (E_MCRL_REGNUM,
386 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
387 break;
388 case E_MCVF_REGNUM:
389 regcache->raw_collect (E_MCVF_REGNUM,
390 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
391 break;
392 case E_FPCR_REGNUM:
393 /* FPCR is numbered among the GP regs, but handled as an FP reg.
394 Do nothing. */
395 break;
396 case E_FPCR_REGNUM + 1:
397 /* The gregset struct has noplace to put this: do nothing. */
398 break;
399 case E_FPCR_REGNUM + 2:
400 /* The gregset struct has noplace to put this: do nothing. */
401 break;
402 default: /* An error, obviously, but should we error out? */
403 break;
404 case -1:
405 for (i = 0; i < MN10300_ELF_NGREG; i++)
406 am33_collect_gregset_method (regset, regcache, i, gregs, len);
407 break;
408 }
409 return;
410 }
411
412 /* Copy fp register values from regcache to regset. */
413
414 static void
415 am33_collect_fpregset_method (const struct regset *regset,
416 const struct regcache *regcache,
417 int regnum, void *fpregs, size_t len)
418 {
419 mn10300_elf_fpregset_t *fpregset = (mn10300_elf_fpregset_t *) fpregs;
420
421 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
422
423 if (regnum == -1)
424 {
425 int i;
426 for (i = 0; i < MN10300_ELF_NFPREG; i++)
427 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
428 fpregs, len);
429 am33_collect_fpregset_method (regset, regcache,
430 E_FPCR_REGNUM, fpregs, len);
431 }
432 else if (regnum == E_FPCR_REGNUM)
433 regcache->raw_collect (E_FPCR_REGNUM, &fpregset->fpcr);
434 else if (E_FS0_REGNUM <= regnum
435 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
436 regcache->raw_collect (regnum, &fpregset->fpregs[regnum - E_FS0_REGNUM]);
437
438 return;
439 }
440
441 static const struct regset am33_gregset =
442 {
443 NULL, am33_supply_gregset_method, am33_collect_gregset_method
444 };
445
446 static const struct regset am33_fpregset =
447 {
448 NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
449 };
450
451 /* Iterate over core file register note sections. */
452
453 static void
454 am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
455 iterate_over_regset_sections_cb *cb,
456 void *cb_data,
457 const struct regcache *regcache)
458 {
459 cb (".reg", sizeof (mn10300_elf_gregset_t), sizeof (mn10300_elf_gregset_t),
460 &am33_gregset, NULL, cb_data);
461 cb (".reg2", sizeof (mn10300_elf_fpregset_t), sizeof (mn10300_elf_fpregset_t),
462 &am33_fpregset, NULL, cb_data);
463 }
464 \f
465 static void
466 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
467 struct frame_info *this_frame,
468 struct trad_frame_cache *this_cache,
469 CORE_ADDR func);
470
471 static const struct tramp_frame am33_linux_sigframe = {
472 SIGTRAMP_FRAME,
473 1,
474 {
475 /* mov 119,d0 */
476 { 0x2c, ULONGEST_MAX },
477 { 0x77, ULONGEST_MAX },
478 { 0x00, ULONGEST_MAX },
479 /* syscall 0 */
480 { 0xf0, ULONGEST_MAX },
481 { 0xe0, ULONGEST_MAX },
482 { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
483 },
484 am33_linux_sigframe_cache_init
485 };
486
487 static const struct tramp_frame am33_linux_rt_sigframe = {
488 SIGTRAMP_FRAME,
489 1,
490 {
491 /* mov 173,d0 */
492 { 0x2c, ULONGEST_MAX },
493 { 0xad, ULONGEST_MAX },
494 { 0x00, ULONGEST_MAX },
495 /* syscall 0 */
496 { 0xf0, ULONGEST_MAX },
497 { 0xe0, ULONGEST_MAX },
498 { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
499 },
500 am33_linux_sigframe_cache_init
501 };
502
503 /* Relevant struct definitions for signal handling...
504
505 From arch/mn10300/kernel/sigframe.h:
506
507 struct sigframe
508 {
509 void (*pretcode)(void);
510 int sig;
511 struct sigcontext *psc;
512 struct sigcontext sc;
513 struct fpucontext fpuctx;
514 unsigned long extramask[_NSIG_WORDS-1];
515 char retcode[8];
516 };
517
518 struct rt_sigframe
519 {
520 void (*pretcode)(void);
521 int sig;
522 struct siginfo *pinfo;
523 void *puc;
524 struct siginfo info;
525 struct ucontext uc;
526 struct fpucontext fpuctx;
527 char retcode[8];
528 };
529
530 From include/asm-mn10300/ucontext.h:
531
532 struct ucontext {
533 unsigned long uc_flags;
534 struct ucontext *uc_link;
535 stack_t uc_stack;
536 struct sigcontext uc_mcontext;
537 sigset_t uc_sigmask;
538 };
539
540 From include/asm-mn10300/sigcontext.h:
541
542 struct fpucontext {
543 unsigned long fs[32];
544 unsigned long fpcr;
545 };
546
547 struct sigcontext {
548 unsigned long d0;
549 unsigned long d1;
550 unsigned long d2;
551 unsigned long d3;
552 unsigned long a0;
553 unsigned long a1;
554 unsigned long a2;
555 unsigned long a3;
556 unsigned long e0;
557 unsigned long e1;
558 unsigned long e2;
559 unsigned long e3;
560 unsigned long e4;
561 unsigned long e5;
562 unsigned long e6;
563 unsigned long e7;
564 unsigned long lar;
565 unsigned long lir;
566 unsigned long mdr;
567 unsigned long mcvf;
568 unsigned long mcrl;
569 unsigned long mcrh;
570 unsigned long mdrq;
571 unsigned long sp;
572 unsigned long epsw;
573 unsigned long pc;
574 struct fpucontext *fpucontext;
575 unsigned long oldmask;
576 }; */
577
578
579 #define AM33_SIGCONTEXT_D0 0
580 #define AM33_SIGCONTEXT_D1 4
581 #define AM33_SIGCONTEXT_D2 8
582 #define AM33_SIGCONTEXT_D3 12
583 #define AM33_SIGCONTEXT_A0 16
584 #define AM33_SIGCONTEXT_A1 20
585 #define AM33_SIGCONTEXT_A2 24
586 #define AM33_SIGCONTEXT_A3 28
587 #define AM33_SIGCONTEXT_E0 32
588 #define AM33_SIGCONTEXT_E1 36
589 #define AM33_SIGCONTEXT_E2 40
590 #define AM33_SIGCONTEXT_E3 44
591 #define AM33_SIGCONTEXT_E4 48
592 #define AM33_SIGCONTEXT_E5 52
593 #define AM33_SIGCONTEXT_E6 56
594 #define AM33_SIGCONTEXT_E7 60
595 #define AM33_SIGCONTEXT_LAR 64
596 #define AM33_SIGCONTEXT_LIR 68
597 #define AM33_SIGCONTEXT_MDR 72
598 #define AM33_SIGCONTEXT_MCVF 76
599 #define AM33_SIGCONTEXT_MCRL 80
600 #define AM33_SIGCONTEXT_MCRH 84
601 #define AM33_SIGCONTEXT_MDRQ 88
602 #define AM33_SIGCONTEXT_SP 92
603 #define AM33_SIGCONTEXT_EPSW 96
604 #define AM33_SIGCONTEXT_PC 100
605 #define AM33_SIGCONTEXT_FPUCONTEXT 104
606
607
608 static void
609 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
610 struct frame_info *this_frame,
611 struct trad_frame_cache *this_cache,
612 CORE_ADDR func)
613 {
614 CORE_ADDR sc_base, fpubase;
615 int i;
616
617 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
618 if (self == &am33_linux_sigframe)
619 {
620 sc_base += 8;
621 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
622 }
623 else
624 {
625 sc_base += 12;
626 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
627 sc_base += 20;
628 }
629
630 trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
631 sc_base + AM33_SIGCONTEXT_D0);
632 trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
633 sc_base + AM33_SIGCONTEXT_D1);
634 trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
635 sc_base + AM33_SIGCONTEXT_D2);
636 trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
637 sc_base + AM33_SIGCONTEXT_D3);
638
639 trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
640 sc_base + AM33_SIGCONTEXT_A0);
641 trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
642 sc_base + AM33_SIGCONTEXT_A1);
643 trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
644 sc_base + AM33_SIGCONTEXT_A2);
645 trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
646 sc_base + AM33_SIGCONTEXT_A3);
647
648 trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
649 sc_base + AM33_SIGCONTEXT_E0);
650 trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
651 sc_base + AM33_SIGCONTEXT_E1);
652 trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
653 sc_base + AM33_SIGCONTEXT_E2);
654 trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
655 sc_base + AM33_SIGCONTEXT_E3);
656 trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
657 sc_base + AM33_SIGCONTEXT_E4);
658 trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
659 sc_base + AM33_SIGCONTEXT_E5);
660 trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
661 sc_base + AM33_SIGCONTEXT_E6);
662 trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
663 sc_base + AM33_SIGCONTEXT_E7);
664
665 trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
666 sc_base + AM33_SIGCONTEXT_LAR);
667 trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
668 sc_base + AM33_SIGCONTEXT_LIR);
669 trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
670 sc_base + AM33_SIGCONTEXT_MDR);
671 trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
672 sc_base + AM33_SIGCONTEXT_MCVF);
673 trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
674 sc_base + AM33_SIGCONTEXT_MCRL);
675 trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
676 sc_base + AM33_SIGCONTEXT_MDRQ);
677
678 trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
679 sc_base + AM33_SIGCONTEXT_SP);
680 trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
681 sc_base + AM33_SIGCONTEXT_EPSW);
682 trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
683 sc_base + AM33_SIGCONTEXT_PC);
684
685 fpubase = get_frame_memory_unsigned (this_frame,
686 sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
687 4);
688 if (fpubase)
689 {
690 for (i = 0; i < 32; i++)
691 {
692 trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
693 fpubase + 4 * i);
694 }
695 trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
696 }
697
698 trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
699 }
700 \f
701 /* AM33 GNU/Linux osabi has been recognized.
702 Now's our chance to register our corefile handling. */
703
704 static void
705 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
706 {
707 linux_init_abi (info, gdbarch, 0);
708
709 set_gdbarch_iterate_over_regset_sections
710 (gdbarch, am33_iterate_over_regset_sections);
711 set_solib_svr4_fetch_link_map_offsets
712 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
713
714 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
715 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
716 }
717
718 void _initialize_mn10300_linux_tdep ();
719 void
720 _initialize_mn10300_linux_tdep ()
721 {
722 gdbarch_register_osabi (bfd_arch_mn10300, 0,
723 GDB_OSABI_LINUX, am33_linux_init_osabi);
724 }
725
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