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