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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, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5
6 This file is part of GDB.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20
21 #include "defs.h"
22 #include "gdbcore.h"
23 #include "gdb_string.h"
24 #include "regcache.h"
25 #include "mn10300-tdep.h"
26 #include "gdb_assert.h"
27 #include "bfd.h"
28 #include "elf-bfd.h"
29 #include "osabi.h"
30 #include "regset.h"
31 #include "solib-svr4.h"
32 #include "frame.h"
33 #include "trad-frame.h"
34 #include "tramp-frame.h"
35 #include "linux-tdep.h"
36
37 #include <stdlib.h>
38
39 /* Transliterated from <asm-mn10300/elf.h>... */
40 #define MN10300_ELF_NGREG 28
41 #define MN10300_ELF_NFPREG 32
42
43 typedef gdb_byte mn10300_elf_greg_t[4];
44 typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
45
46 typedef gdb_byte mn10300_elf_fpreg_t[4];
47 typedef struct
48 {
49 mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG];
50 gdb_byte fpcr[4];
51 } mn10300_elf_fpregset_t;
52
53 /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */
54 #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0
55 #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1
56 #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2
57 #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3
58 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4
59 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5
60 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6
61 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7
62 #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8
63 #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9
64 #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10
65 #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11
66 #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12
67 #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13
68 #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14
69 #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15
70 #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16
71 #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17
72 #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18
73 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19
74 #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20
75 #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21
76 #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22
77 #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23
78 #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24
79 #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25
80 #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26
81
82 /* New gdbarch API for corefile registers.
83 Given a section name and size, create a struct reg object
84 with a supply_register and a collect_register method. */
85
86 /* Copy register value of REGNUM from regset to regcache.
87 If REGNUM is -1, do this for all gp registers in regset. */
88
89 static void
90 am33_supply_gregset_method (const struct regset *regset,
91 struct regcache *regcache,
92 int regnum, const void *gregs, size_t len)
93 {
94 char zerobuf[MAX_REGISTER_SIZE];
95 const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
96 int i;
97
98 gdb_assert (len == sizeof (mn10300_elf_gregset_t));
99
100 switch (regnum) {
101 case E_D0_REGNUM:
102 regcache_raw_supply (regcache, E_D0_REGNUM,
103 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
104 break;
105 case E_D1_REGNUM:
106 regcache_raw_supply (regcache, E_D1_REGNUM,
107 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
108 break;
109 case E_D2_REGNUM:
110 regcache_raw_supply (regcache, E_D2_REGNUM,
111 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
112 break;
113 case E_D3_REGNUM:
114 regcache_raw_supply (regcache, E_D3_REGNUM,
115 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
116 break;
117 case E_A0_REGNUM:
118 regcache_raw_supply (regcache, E_A0_REGNUM,
119 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
120 break;
121 case E_A1_REGNUM:
122 regcache_raw_supply (regcache, E_A1_REGNUM,
123 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
124 break;
125 case E_A2_REGNUM:
126 regcache_raw_supply (regcache, E_A2_REGNUM,
127 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
128 break;
129 case E_A3_REGNUM:
130 regcache_raw_supply (regcache, E_A3_REGNUM,
131 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
132 break;
133 case E_SP_REGNUM:
134 regcache_raw_supply (regcache, E_SP_REGNUM,
135 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
136 break;
137 case E_PC_REGNUM:
138 regcache_raw_supply (regcache, E_PC_REGNUM,
139 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
140 break;
141 case E_MDR_REGNUM:
142 regcache_raw_supply (regcache, E_MDR_REGNUM,
143 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
144 break;
145 case E_PSW_REGNUM:
146 regcache_raw_supply (regcache, E_PSW_REGNUM,
147 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
148 break;
149 case E_LIR_REGNUM:
150 regcache_raw_supply (regcache, E_LIR_REGNUM,
151 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
152 break;
153 case E_LAR_REGNUM:
154 regcache_raw_supply (regcache, E_LAR_REGNUM,
155 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
156 break;
157 case E_MDRQ_REGNUM:
158 regcache_raw_supply (regcache, E_MDRQ_REGNUM,
159 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
160 break;
161 case E_E0_REGNUM:
162 regcache_raw_supply (regcache, E_E0_REGNUM,
163 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
164 break;
165 case E_E1_REGNUM:
166 regcache_raw_supply (regcache, E_E1_REGNUM,
167 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
168 break;
169 case E_E2_REGNUM:
170 regcache_raw_supply (regcache, E_E2_REGNUM,
171 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
172 break;
173 case E_E3_REGNUM:
174 regcache_raw_supply (regcache, E_E3_REGNUM,
175 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
176 break;
177 case E_E4_REGNUM:
178 regcache_raw_supply (regcache, E_E4_REGNUM,
179 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
180 break;
181 case E_E5_REGNUM:
182 regcache_raw_supply (regcache, E_E5_REGNUM,
183 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
184 break;
185 case E_E6_REGNUM:
186 regcache_raw_supply (regcache, E_E6_REGNUM,
187 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
188 break;
189 case E_E7_REGNUM:
190 regcache_raw_supply (regcache, E_E7_REGNUM,
191 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
192 break;
193
194 /* ssp, msp, and usp are inaccessible. */
195 case E_E8_REGNUM:
196 memset (zerobuf, 0, MAX_REGISTER_SIZE);
197 regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf);
198 break;
199 case E_E9_REGNUM:
200 memset (zerobuf, 0, MAX_REGISTER_SIZE);
201 regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf);
202 break;
203 case E_E10_REGNUM:
204 memset (zerobuf, 0, MAX_REGISTER_SIZE);
205 regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf);
206
207 break;
208 case E_MCRH_REGNUM:
209 regcache_raw_supply (regcache, E_MCRH_REGNUM,
210 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
211 break;
212 case E_MCRL_REGNUM:
213 regcache_raw_supply (regcache, E_MCRL_REGNUM,
214 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
215 break;
216 case E_MCVF_REGNUM:
217 regcache_raw_supply (regcache, E_MCVF_REGNUM,
218 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
219 break;
220 case E_FPCR_REGNUM:
221 /* FPCR is numbered among the GP regs, but handled as an FP reg.
222 Do nothing. */
223 break;
224 case E_FPCR_REGNUM + 1:
225 /* The two unused registers beyond fpcr are inaccessible. */
226 memset (zerobuf, 0, MAX_REGISTER_SIZE);
227 regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf);
228 break;
229 case E_FPCR_REGNUM + 2:
230 memset (zerobuf, 0, MAX_REGISTER_SIZE);
231 regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf);
232 break;
233 default: /* An error, obviously, but should we error out? */
234 break;
235 case -1:
236 for (i = 0; i < MN10300_ELF_NGREG; i++)
237 am33_supply_gregset_method (regset, regcache, i, gregs, len);
238 break;
239 }
240 return;
241 }
242
243 /* Copy fp register value of REGNUM from regset to regcache.
244 If REGNUM is -1, do this for all fp registers in regset. */
245
246 static void
247 am33_supply_fpregset_method (const struct regset *regset,
248 struct regcache *regcache,
249 int regnum, const void *fpregs, size_t len)
250 {
251 const mn10300_elf_fpregset_t *fpregset = fpregs;
252
253 gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
254
255 if (regnum == -1)
256 {
257 int i;
258
259 for (i = 0; i < MN10300_ELF_NFPREG; i++)
260 am33_supply_fpregset_method (regset, regcache,
261 E_FS0_REGNUM + i, fpregs, len);
262 am33_supply_fpregset_method (regset, regcache,
263 E_FPCR_REGNUM, fpregs, len);
264 }
265 else if (regnum == E_FPCR_REGNUM)
266 regcache_raw_supply (regcache, E_FPCR_REGNUM,
267 &fpregset->fpcr);
268 else if (E_FS0_REGNUM <= regnum
269 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
270 regcache_raw_supply (regcache, regnum,
271 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
272
273 return;
274 }
275
276 /* Copy register values from regcache to regset. */
277
278 static void
279 am33_collect_gregset_method (const struct regset *regset,
280 const struct regcache *regcache,
281 int regnum, void *gregs, size_t len)
282 {
283 mn10300_elf_gregset_t *regp = gregs;
284 int i;
285
286 gdb_assert (len == sizeof (mn10300_elf_gregset_t));
287
288 switch (regnum) {
289 case E_D0_REGNUM:
290 regcache_raw_collect (regcache, E_D0_REGNUM,
291 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
292 break;
293 case E_D1_REGNUM:
294 regcache_raw_collect (regcache, E_D1_REGNUM,
295 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
296 break;
297 case E_D2_REGNUM:
298 regcache_raw_collect (regcache, E_D2_REGNUM,
299 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
300 break;
301 case E_D3_REGNUM:
302 regcache_raw_collect (regcache, E_D3_REGNUM,
303 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
304 break;
305 case E_A0_REGNUM:
306 regcache_raw_collect (regcache, E_A0_REGNUM,
307 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
308 break;
309 case E_A1_REGNUM:
310 regcache_raw_collect (regcache, E_A1_REGNUM,
311 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
312 break;
313 case E_A2_REGNUM:
314 regcache_raw_collect (regcache, E_A2_REGNUM,
315 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
316 break;
317 case E_A3_REGNUM:
318 regcache_raw_collect (regcache, E_A3_REGNUM,
319 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
320 break;
321 case E_SP_REGNUM:
322 regcache_raw_collect (regcache, E_SP_REGNUM,
323 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
324 break;
325 case E_PC_REGNUM:
326 regcache_raw_collect (regcache, E_PC_REGNUM,
327 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
328 break;
329 case E_MDR_REGNUM:
330 regcache_raw_collect (regcache, E_MDR_REGNUM,
331 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
332 break;
333 case E_PSW_REGNUM:
334 regcache_raw_collect (regcache, E_PSW_REGNUM,
335 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
336 break;
337 case E_LIR_REGNUM:
338 regcache_raw_collect (regcache, E_LIR_REGNUM,
339 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
340 break;
341 case E_LAR_REGNUM:
342 regcache_raw_collect (regcache, E_LAR_REGNUM,
343 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
344 break;
345 case E_MDRQ_REGNUM:
346 regcache_raw_collect (regcache, E_MDRQ_REGNUM,
347 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
348 break;
349 case E_E0_REGNUM:
350 regcache_raw_collect (regcache, E_E0_REGNUM,
351 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
352 break;
353 case E_E1_REGNUM:
354 regcache_raw_collect (regcache, E_E1_REGNUM,
355 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
356 break;
357 case E_E2_REGNUM:
358 regcache_raw_collect (regcache, E_E2_REGNUM,
359 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
360 break;
361 case E_E3_REGNUM:
362 regcache_raw_collect (regcache, E_E3_REGNUM,
363 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
364 break;
365 case E_E4_REGNUM:
366 regcache_raw_collect (regcache, E_E4_REGNUM,
367 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
368 break;
369 case E_E5_REGNUM:
370 regcache_raw_collect (regcache, E_E5_REGNUM,
371 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
372 break;
373 case E_E6_REGNUM:
374 regcache_raw_collect (regcache, E_E6_REGNUM,
375 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
376 break;
377 case E_E7_REGNUM:
378 regcache_raw_collect (regcache, E_E7_REGNUM,
379 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
380 break;
381
382 /* ssp, msp, and usp are inaccessible. */
383 case E_E8_REGNUM:
384 /* The gregset struct has noplace to put this: do nothing. */
385 break;
386 case E_E9_REGNUM:
387 /* The gregset struct has noplace to put this: do nothing. */
388 break;
389 case E_E10_REGNUM:
390 /* The gregset struct has noplace to put this: do nothing. */
391 break;
392 case E_MCRH_REGNUM:
393 regcache_raw_collect (regcache, E_MCRH_REGNUM,
394 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
395 break;
396 case E_MCRL_REGNUM:
397 regcache_raw_collect (regcache, E_MCRL_REGNUM,
398 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
399 break;
400 case E_MCVF_REGNUM:
401 regcache_raw_collect (regcache, E_MCVF_REGNUM,
402 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
403 break;
404 case E_FPCR_REGNUM:
405 /* FPCR is numbered among the GP regs, but handled as an FP reg.
406 Do nothing. */
407 break;
408 case E_FPCR_REGNUM + 1:
409 /* The gregset struct has noplace to put this: do nothing. */
410 break;
411 case E_FPCR_REGNUM + 2:
412 /* The gregset struct has noplace to put this: do nothing. */
413 break;
414 default: /* An error, obviously, but should we error out? */
415 break;
416 case -1:
417 for (i = 0; i < MN10300_ELF_NGREG; i++)
418 am33_collect_gregset_method (regset, regcache, i, gregs, len);
419 break;
420 }
421 return;
422 }
423
424 /* Copy fp register values from regcache to regset. */
425
426 static void
427 am33_collect_fpregset_method (const struct regset *regset,
428 const struct regcache *regcache,
429 int regnum, void *fpregs, size_t len)
430 {
431 mn10300_elf_fpregset_t *fpregset = fpregs;
432
433 gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
434
435 if (regnum == -1)
436 {
437 int i;
438 for (i = 0; i < MN10300_ELF_NFPREG; i++)
439 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
440 fpregs, len);
441 am33_collect_fpregset_method (regset, regcache,
442 E_FPCR_REGNUM, fpregs, len);
443 }
444 else if (regnum == E_FPCR_REGNUM)
445 regcache_raw_collect (regcache, E_FPCR_REGNUM,
446 &fpregset->fpcr);
447 else if (E_FS0_REGNUM <= regnum
448 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
449 regcache_raw_collect (regcache, regnum,
450 &fpregset->fpregs[regnum - E_FS0_REGNUM]);
451
452 return;
453 }
454
455 /* Create a struct regset from a corefile register section. */
456
457 static const struct regset *
458 am33_regset_from_core_section (struct gdbarch *gdbarch,
459 const char *sect_name,
460 size_t sect_size)
461 {
462 /* We will call regset_alloc, and pass the names of the supply and
463 collect methods. */
464
465 if (sect_size == sizeof (mn10300_elf_fpregset_t))
466 return regset_alloc (gdbarch,
467 am33_supply_fpregset_method,
468 am33_collect_fpregset_method);
469 else
470 return regset_alloc (gdbarch,
471 am33_supply_gregset_method,
472 am33_collect_gregset_method);
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_regset_from_core_section (gdbarch,
720 am33_regset_from_core_section);
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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