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GDB: Fix the overflow in addr/line_is_displayed()
[deliverable/binutils-gdb.git] / gdb / mn10300-linux-tdep.c
CommitLineData
611889b1 1/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
155bd5d1 2
b811d2c2 3 Copyright (C) 2003-2020 Free Software Foundation, Inc.
611889b1
KB		 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
a9762ec7 9 the Free Software Foundation; either version 3 of the License, or
611889b1
KB		 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
a9762ec7 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
611889b1
KB		 19
20#include "defs.h"
21#include "gdbcore.h"
611889b1
KB		 22#include "regcache.h"
23#include "mn10300-tdep.h"
611889b1
KB		 24#include "bfd.h"
25#include "elf-bfd.h"
26#include "osabi.h"
27#include "regset.h"
696cc4a6 28#include "solib-svr4.h"
f9ec92b6
KB		 29#include "frame.h"
30#include "trad-frame.h"
31#include "tramp-frame.h"
a5ee0f0c 32#include "linux-tdep.h"
0d12e84c 33#include "gdbarch.h"
611889b1 34
611889b1
KB		 35/* Transliterated from <asm-mn10300/elf.h>... */
36#define MN10300_ELF_NGREG 28
37#define MN10300_ELF_NFPREG 32
38
39typedef gdb_byte mn10300_elf_greg_t[4];
40typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
41
42typedef gdb_byte mn10300_elf_fpreg_t[4];
43typedef 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
025bb325 82/* Copy register value of REGNUM from regset to regcache.
611889b1
KB		 83 If REGNUM is -1, do this for all gp registers in regset. */
84
85static void
86am33_supply_gregset_method (const struct regset *regset,
87 struct regcache *regcache,
88 int regnum, const void *gregs, size_t len)
89{
611889b1
KB		 90 const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
91 int i;
92
1528345d 93 gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
611889b1
KB		 94
95 switch (regnum) {
96 case E_D0_REGNUM:
73e1c03f
SM		 97 regcache->raw_supply (E_D0_REGNUM,
98 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
611889b1
KB		 99 break;
100 case E_D1_REGNUM:
73e1c03f
SM		 101 regcache->raw_supply (E_D1_REGNUM,
102 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
611889b1
KB		 103 break;
104 case E_D2_REGNUM:
73e1c03f
SM		 105 regcache->raw_supply (E_D2_REGNUM,
106 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
611889b1
KB		 107 break;
108 case E_D3_REGNUM:
73e1c03f
SM		 109 regcache->raw_supply (E_D3_REGNUM,
110 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
611889b1
KB		 111 break;
112 case E_A0_REGNUM:
73e1c03f
SM		 113 regcache->raw_supply (E_A0_REGNUM,
114 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
611889b1
KB		 115 break;
116 case E_A1_REGNUM:
73e1c03f
SM		 117 regcache->raw_supply (E_A1_REGNUM,
118 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
611889b1
KB		 119 break;
120 case E_A2_REGNUM:
73e1c03f
SM		 121 regcache->raw_supply (E_A2_REGNUM,
122 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
611889b1
KB		 123 break;
124 case E_A3_REGNUM:
73e1c03f
SM		 125 regcache->raw_supply (E_A3_REGNUM,
126 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
611889b1
KB		 127 break;
128 case E_SP_REGNUM:
73e1c03f
SM		 129 regcache->raw_supply (E_SP_REGNUM,
130 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
611889b1
KB		 131 break;
132 case E_PC_REGNUM:
73e1c03f
SM		 133 regcache->raw_supply (E_PC_REGNUM,
134 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
611889b1
KB		 135 break;
136 case E_MDR_REGNUM:
73e1c03f
SM		 137 regcache->raw_supply (E_MDR_REGNUM,
138 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
611889b1
KB		 139 break;
140 case E_PSW_REGNUM:
73e1c03f
SM		 141 regcache->raw_supply (E_PSW_REGNUM,
142 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
611889b1
KB		 143 break;
144 case E_LIR_REGNUM:
73e1c03f
SM		 145 regcache->raw_supply (E_LIR_REGNUM,
146 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
611889b1
KB		 147 break;
148 case E_LAR_REGNUM:
73e1c03f
SM		 149 regcache->raw_supply (E_LAR_REGNUM,
150 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
611889b1
KB		 151 break;
152 case E_MDRQ_REGNUM:
73e1c03f
SM		 153 regcache->raw_supply (E_MDRQ_REGNUM,
154 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
611889b1
KB		 155 break;
156 case E_E0_REGNUM:
73e1c03f
SM		 157 regcache->raw_supply (E_E0_REGNUM,
158 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
611889b1
KB		 159 break;
160 case E_E1_REGNUM:
73e1c03f
SM		 161 regcache->raw_supply (E_E1_REGNUM,
162 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
611889b1
KB		 163 break;
164 case E_E2_REGNUM:
73e1c03f
SM		 165 regcache->raw_supply (E_E2_REGNUM,
166 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
611889b1
KB		 167 break;
168 case E_E3_REGNUM:
73e1c03f
SM		 169 regcache->raw_supply (E_E3_REGNUM,
170 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
611889b1
KB		 171 break;
172 case E_E4_REGNUM:
73e1c03f
SM		 173 regcache->raw_supply (E_E4_REGNUM,
174 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
611889b1
KB		 175 break;
176 case E_E5_REGNUM:
73e1c03f
SM		 177 regcache->raw_supply (E_E5_REGNUM,
178 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
611889b1
KB		 179 break;
180 case E_E6_REGNUM:
73e1c03f
SM		 181 regcache->raw_supply (E_E6_REGNUM,
182 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
611889b1
KB		 183 break;
184 case E_E7_REGNUM:
73e1c03f
SM		 185 regcache->raw_supply (E_E7_REGNUM,
186 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
611889b1
KB		 187 break;
188
189 /* ssp, msp, and usp are inaccessible. */
190 case E_E8_REGNUM:
146e6c5c 191 regcache->raw_supply_zeroed (E_E8_REGNUM);
611889b1
KB		 192 break;
193 case E_E9_REGNUM:
146e6c5c 194 regcache->raw_supply_zeroed (E_E9_REGNUM);
611889b1
KB		 195 break;
196 case E_E10_REGNUM:
146e6c5c 197 regcache->raw_supply_zeroed (E_E10_REGNUM);
611889b1
KB		 198 break;
199 case E_MCRH_REGNUM:
73e1c03f
SM		 200 regcache->raw_supply (E_MCRH_REGNUM,
201 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
611889b1
KB		 202 break;
203 case E_MCRL_REGNUM:
73e1c03f
SM		 204 regcache->raw_supply (E_MCRL_REGNUM,
205 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
611889b1
KB		 206 break;
207 case E_MCVF_REGNUM:
73e1c03f
SM		 208 regcache->raw_supply (E_MCVF_REGNUM,
209 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
611889b1
KB		 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. */
146e6c5c 217 regcache->raw_supply_zeroed (E_FPCR_REGNUM + 1);
611889b1
KB		 218 break;
219 case E_FPCR_REGNUM + 2:
146e6c5c 220 regcache->raw_supply_zeroed (E_FPCR_REGNUM + 2);
611889b1
KB		 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
025bb325
MS		 232/* Copy fp register value of REGNUM from regset to regcache.
233 If REGNUM is -1, do this for all fp registers in regset. */
611889b1
KB		 234
235static void
236am33_supply_fpregset_method (const struct regset *regset,
237 struct regcache *regcache,
238 int regnum, const void *fpregs, size_t len)
239{
19ba03f4
SM		 240 const mn10300_elf_fpregset_t *fpregset
241 = (const mn10300_elf_fpregset_t *) fpregs;
611889b1 242
1528345d 243 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
611889b1
KB		 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)
73e1c03f 256 regcache->raw_supply (E_FPCR_REGNUM, &fpregset->fpcr);
025bb325
MS		 257 else if (E_FS0_REGNUM <= regnum
258 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
73e1c03f 259 regcache->raw_supply (regnum, &fpregset->fpregs[regnum - E_FS0_REGNUM]);
611889b1
KB		 260
261 return;
262}
263
264/* Copy register values from regcache to regset. */
265
266static void
267am33_collect_gregset_method (const struct regset *regset,
268 const struct regcache *regcache,
269 int regnum, void *gregs, size_t len)
270{
19ba03f4 271 mn10300_elf_gregset_t *regp = (gdb_byte (*)[28][4]) gregs;
611889b1
KB		 272 int i;
273
1528345d 274 gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
611889b1
KB		 275
276 switch (regnum) {
277 case E_D0_REGNUM:
34a79281
SM		 278 regcache->raw_collect (E_D0_REGNUM,
279 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
611889b1
KB		 280 break;
281 case E_D1_REGNUM:
34a79281
SM		 282 regcache->raw_collect (E_D1_REGNUM,
283 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
611889b1
KB		 284 break;
285 case E_D2_REGNUM:
34a79281
SM		 286 regcache->raw_collect (E_D2_REGNUM,
287 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
611889b1
KB		 288 break;
289 case E_D3_REGNUM:
34a79281
SM		 290 regcache->raw_collect (E_D3_REGNUM,
291 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
611889b1
KB		 292 break;
293 case E_A0_REGNUM:
34a79281
SM		 294 regcache->raw_collect (E_A0_REGNUM,
295 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
611889b1
KB		 296 break;
297 case E_A1_REGNUM:
34a79281
SM		 298 regcache->raw_collect (E_A1_REGNUM,
299 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
611889b1
KB		 300 break;
301 case E_A2_REGNUM:
34a79281
SM		 302 regcache->raw_collect (E_A2_REGNUM,
303 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
611889b1
KB		 304 break;
305 case E_A3_REGNUM:
34a79281
SM		 306 regcache->raw_collect (E_A3_REGNUM,
307 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
611889b1
KB		 308 break;
309 case E_SP_REGNUM:
34a79281
SM		 310 regcache->raw_collect (E_SP_REGNUM,
311 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
611889b1
KB		 312 break;
313 case E_PC_REGNUM:
34a79281
SM		 314 regcache->raw_collect (E_PC_REGNUM,
315 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
611889b1
KB		 316 break;
317 case E_MDR_REGNUM:
34a79281
SM		 318 regcache->raw_collect (E_MDR_REGNUM,
319 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
611889b1
KB		 320 break;
321 case E_PSW_REGNUM:
34a79281
SM		 322 regcache->raw_collect (E_PSW_REGNUM,
323 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
611889b1
KB		 324 break;
325 case E_LIR_REGNUM:
34a79281
SM		 326 regcache->raw_collect (E_LIR_REGNUM,
327 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
611889b1
KB		 328 break;
329 case E_LAR_REGNUM:
34a79281
SM		 330 regcache->raw_collect (E_LAR_REGNUM,
331 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
611889b1
KB		 332 break;
333 case E_MDRQ_REGNUM:
34a79281
SM		 334 regcache->raw_collect (E_MDRQ_REGNUM,
335 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
611889b1
KB		 336 break;
337 case E_E0_REGNUM:
34a79281
SM		 338 regcache->raw_collect (E_E0_REGNUM,
339 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
611889b1
KB		 340 break;
341 case E_E1_REGNUM:
34a79281
SM		 342 regcache->raw_collect (E_E1_REGNUM,
343 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
611889b1
KB		 344 break;
345 case E_E2_REGNUM:
34a79281
SM		 346 regcache->raw_collect (E_E2_REGNUM,
347 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
611889b1
KB		 348 break;
349 case E_E3_REGNUM:
34a79281
SM		 350 regcache->raw_collect (E_E3_REGNUM,
351 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
611889b1
KB		 352 break;
353 case E_E4_REGNUM:
34a79281
SM		 354 regcache->raw_collect (E_E4_REGNUM,
355 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
611889b1
KB		 356 break;
357 case E_E5_REGNUM:
34a79281
SM		 358 regcache->raw_collect (E_E5_REGNUM,
359 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
611889b1
KB		 360 break;
361 case E_E6_REGNUM:
34a79281
SM		 362 regcache->raw_collect (E_E6_REGNUM,
363 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
611889b1
KB		 364 break;
365 case E_E7_REGNUM:
34a79281
SM		 366 regcache->raw_collect (E_E7_REGNUM,
367 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
611889b1
KB		 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:
34a79281
SM		 381 regcache->raw_collect (E_MCRH_REGNUM,
382 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
611889b1
KB		 383 break;
384 case E_MCRL_REGNUM:
34a79281
SM		 385 regcache->raw_collect (E_MCRL_REGNUM,
386 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
611889b1
KB		 387 break;
388 case E_MCVF_REGNUM:
34a79281
SM		 389 regcache->raw_collect (E_MCVF_REGNUM,
390 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
611889b1
KB		 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
414static void
415am33_collect_fpregset_method (const struct regset *regset,
416 const struct regcache *regcache,
417 int regnum, void *fpregs, size_t len)
418{
19ba03f4 419 mn10300_elf_fpregset_t *fpregset = (mn10300_elf_fpregset_t *) fpregs;
611889b1 420
1528345d 421 gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
611889b1
KB		 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)
34a79281 433 regcache->raw_collect (E_FPCR_REGNUM, &fpregset->fpcr);
611889b1
KB		 434 else if (E_FS0_REGNUM <= regnum
435 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
34a79281 436 regcache->raw_collect (regnum, &fpregset->fpregs[regnum - E_FS0_REGNUM]);
611889b1
KB		 437
438 return;
439}
440
24534243
AA		 441static const struct regset am33_gregset =
442 {
443 NULL, am33_supply_gregset_method, am33_collect_gregset_method
444 };
445
446static const struct regset am33_fpregset =
447 {
448 NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
449 };
450
3636e608 451/* Iterate over core file register note sections. */
611889b1 452
3636e608
AA		 453static void
454am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
455 iterate_over_regset_sections_cb *cb,
456 void *cb_data,
457 const struct regcache *regcache)
611889b1 458{
a616bb94
AH		 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);
611889b1 463}
f9ec92b6
KB		 464\f
465static void
466am33_linux_sigframe_cache_init (const struct tramp_frame *self,
5366653e 467 struct frame_info *this_frame,
f9ec92b6
KB		 468 struct trad_frame_cache *this_cache,
469 CORE_ADDR func);
470
471static const struct tramp_frame am33_linux_sigframe = {
472 SIGTRAMP_FRAME,
473 1,
474 {
475 /* mov 119,d0 */
7bc02706
TT		 476 { 0x2c, ULONGEST_MAX },
477 { 0x77, ULONGEST_MAX },
478 { 0x00, ULONGEST_MAX },
f9ec92b6 479 /* syscall 0 */
7bc02706
TT		 480 { 0xf0, ULONGEST_MAX },
481 { 0xe0, ULONGEST_MAX },
482 { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
f9ec92b6
KB		 483 },
484 am33_linux_sigframe_cache_init
485};
486
487static const struct tramp_frame am33_linux_rt_sigframe = {
488 SIGTRAMP_FRAME,
489 1,
490 {
491 /* mov 173,d0 */
7bc02706
TT		 492 { 0x2c, ULONGEST_MAX },
493 { 0xad, ULONGEST_MAX },
494 { 0x00, ULONGEST_MAX },
f9ec92b6 495 /* syscall 0 */
7bc02706
TT		 496 { 0xf0, ULONGEST_MAX },
497 { 0xe0, ULONGEST_MAX },
498 { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
f9ec92b6
KB		 499 },
500 am33_linux_sigframe_cache_init
501};
502
503/* Relevant struct definitions for signal handling...
504
505From arch/mn10300/kernel/sigframe.h:
506
507struct sigframe
508{
509 void (*pretcode)(void);
510 int sig;
e84605cd 511 struct sigcontext *psc;
f9ec92b6
KB		 512 struct sigcontext sc;
513 struct fpucontext fpuctx;
514 unsigned long extramask[_NSIG_WORDS-1];
515 char retcode[8];
516};
517
518struct 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
530From include/asm-mn10300/ucontext.h:
531
532struct 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
540From include/asm-mn10300/sigcontext.h:
541
542struct fpucontext {
543 unsigned long fs[32];
544 unsigned long fpcr;
545};
546
547struct 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
608static void
609am33_linux_sigframe_cache_init (const struct tramp_frame *self,
5366653e 610 struct frame_info *this_frame,
f9ec92b6
KB		 611 struct trad_frame_cache *this_cache,
612 CORE_ADDR func)
613{
614 CORE_ADDR sc_base, fpubase;
615 int i;
611889b1 616
5366653e 617 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
f9ec92b6
KB		 618 if (self == &am33_linux_sigframe)
619 {
620 sc_base += 8;
5366653e 621 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
f9ec92b6
KB		 622 }
623 else
624 {
625 sc_base += 12;
5366653e 626 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
f9ec92b6
KB		 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
5366653e 685 fpubase = get_frame_memory_unsigned (this_frame,
025bb325
MS		 686 sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
687 4);
f9ec92b6
KB		 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
155bd5d1 701/* AM33 GNU/Linux osabi has been recognized.
611889b1
KB		 702 Now's our chance to register our corefile handling. */
703
704static void
a5ee0f0c 705am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
611889b1 706{
a5ee0f0c
PA		 707 linux_init_abi (info, gdbarch);
708
3636e608
AA		 709 set_gdbarch_iterate_over_regset_sections
710 (gdbarch, am33_iterate_over_regset_sections);
696cc4a6 711 set_solib_svr4_fetch_link_map_offsets
cf1f553f 712 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
f9ec92b6
KB		 713
714 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
715 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
611889b1
KB		 716}
717
718void
719_initialize_mn10300_linux_tdep (void)
720{
721 gdbarch_register_osabi (bfd_arch_mn10300, 0,
722 GDB_OSABI_LINUX, am33_linux_init_osabi);
723}
724
GDB Binutils - Deliverables
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