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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [mn10300-linux-tdep.c] - Blame information for rev 353

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1 24 jeremybenn 
/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
2 
 
3 
   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
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 
 
36 
#include <stdlib.h>
37 
 
38 
/* Transliterated from <asm-mn10300/elf.h>...  */
39 
#define MN10300_ELF_NGREG 28
40 
#define MN10300_ELF_NFPREG 32
41 
 
42 
typedef gdb_byte   mn10300_elf_greg_t[4];
43 
typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
44 
 
45 
typedef gdb_byte   mn10300_elf_fpreg_t[4];
46 
typedef struct
47 
{
48 
  mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG];
49 
  gdb_byte    fpcr[4];
50 
} mn10300_elf_fpregset_t;
51 
 
52 
/* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h.  */
53 
#define MN10300_ELF_GREGSET_T_REG_INDEX_A3      0
54 
#define MN10300_ELF_GREGSET_T_REG_INDEX_A2      1
55 
#define MN10300_ELF_GREGSET_T_REG_INDEX_D3      2
56 
#define MN10300_ELF_GREGSET_T_REG_INDEX_D2      3
57 
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF    4
58 
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL    5
59 
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH    6
60 
#define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ    7
61 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E1      8
62 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E0      9
63 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E7      10
64 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E6      11
65 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E5      12
66 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E4      13
67 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E3      14
68 
#define MN10300_ELF_GREGSET_T_REG_INDEX_E2      15
69 
#define MN10300_ELF_GREGSET_T_REG_INDEX_SP      16
70 
#define MN10300_ELF_GREGSET_T_REG_INDEX_LAR     17
71 
#define MN10300_ELF_GREGSET_T_REG_INDEX_LIR     18
72 
#define MN10300_ELF_GREGSET_T_REG_INDEX_MDR     19
73 
#define MN10300_ELF_GREGSET_T_REG_INDEX_A1      20
74 
#define MN10300_ELF_GREGSET_T_REG_INDEX_A0      21
75 
#define MN10300_ELF_GREGSET_T_REG_INDEX_D1      22
76 
#define MN10300_ELF_GREGSET_T_REG_INDEX_D0      23
77 
#define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24
78 
#define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW    25
79 
#define MN10300_ELF_GREGSET_T_REG_INDEX_PC      26
80 
 
81 
/* New gdbarch API for corefile registers.
82 
   Given a section name and size, create a struct reg object
83 
   with a supply_register and a collect_register method.  */
84 
 
85 
/* Copy register value of REGNUM from regset to regcache.
86 
   If REGNUM is -1, do this for all gp registers in regset.  */
87 
 
88 
static void
89 
am33_supply_gregset_method (const struct regset *regset,
90 
                            struct regcache *regcache,
91 
                            int regnum, const void *gregs, size_t len)
92 
{
93 
  char zerobuf[MAX_REGISTER_SIZE];
94 
  const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
95 
  int i;
96 
 
97 
  gdb_assert (len == sizeof (mn10300_elf_gregset_t));
98 
 
99 
  switch (regnum) {
100 
  case E_D0_REGNUM:
101 
    regcache_raw_supply (regcache, E_D0_REGNUM,
102 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
103 
    break;
104 
  case E_D1_REGNUM:
105 
    regcache_raw_supply (regcache, E_D1_REGNUM,
106 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
107 
    break;
108 
  case E_D2_REGNUM:
109 
    regcache_raw_supply (regcache, E_D2_REGNUM,
110 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
111 
    break;
112 
  case E_D3_REGNUM:
113 
    regcache_raw_supply (regcache, E_D3_REGNUM,
114 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
115 
    break;
116 
  case E_A0_REGNUM:
117 
    regcache_raw_supply (regcache, E_A0_REGNUM,
118 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
119 
    break;
120 
  case E_A1_REGNUM:
121 
    regcache_raw_supply (regcache, E_A1_REGNUM,
122 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
123 
    break;
124 
  case E_A2_REGNUM:
125 
    regcache_raw_supply (regcache, E_A2_REGNUM,
126 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
127 
    break;
128 
  case E_A3_REGNUM:
129 
    regcache_raw_supply (regcache, E_A3_REGNUM,
130 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
131 
    break;
132 
  case E_SP_REGNUM:
133 
    regcache_raw_supply (regcache, E_SP_REGNUM,
134 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
135 
    break;
136 
  case E_PC_REGNUM:
137 
    regcache_raw_supply (regcache, E_PC_REGNUM,
138 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
139 
    break;
140 
  case E_MDR_REGNUM:
141 
    regcache_raw_supply (regcache, E_MDR_REGNUM,
142 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
143 
    break;
144 
  case E_PSW_REGNUM:
145 
    regcache_raw_supply (regcache, E_PSW_REGNUM,
146 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
147 
    break;
148 
  case E_LIR_REGNUM:
149 
    regcache_raw_supply (regcache, E_LIR_REGNUM,
150 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
151 
    break;
152 
  case E_LAR_REGNUM:
153 
    regcache_raw_supply (regcache, E_LAR_REGNUM,
154 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
155 
    break;
156 
  case E_MDRQ_REGNUM:
157 
    regcache_raw_supply (regcache, E_MDRQ_REGNUM,
158 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
159 
    break;
160 
  case E_E0_REGNUM:
161 
    regcache_raw_supply (regcache, E_E0_REGNUM,
162 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
163 
    break;
164 
  case E_E1_REGNUM:
165 
    regcache_raw_supply (regcache, E_E1_REGNUM,
166 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
167 
    break;
168 
  case E_E2_REGNUM:
169 
    regcache_raw_supply (regcache, E_E2_REGNUM,
170 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
171 
    break;
172 
  case E_E3_REGNUM:
173 
    regcache_raw_supply (regcache, E_E3_REGNUM,
174 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
175 
    break;
176 
  case E_E4_REGNUM:
177 
    regcache_raw_supply (regcache, E_E4_REGNUM,
178 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
179 
    break;
180 
  case E_E5_REGNUM:
181 
    regcache_raw_supply (regcache, E_E5_REGNUM,
182 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
183 
    break;
184 
  case E_E6_REGNUM:
185 
    regcache_raw_supply (regcache, E_E6_REGNUM,
186 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
187 
    break;
188 
  case E_E7_REGNUM:
189 
    regcache_raw_supply (regcache, E_E7_REGNUM,
190 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
191 
    break;
192 
 
193 
    /* ssp, msp, and usp are inaccessible.  */
194 
  case E_E8_REGNUM:
195 
    memset (zerobuf, 0, MAX_REGISTER_SIZE);
196 
    regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf);
197 
    break;
198 
  case E_E9_REGNUM:
199 
    memset (zerobuf, 0, MAX_REGISTER_SIZE);
200 
    regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf);
201 
    break;
202 
  case E_E10_REGNUM:
203 
    memset (zerobuf, 0, MAX_REGISTER_SIZE);
204 
    regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf);
205 
 
206 
    break;
207 
  case E_MCRH_REGNUM:
208 
    regcache_raw_supply (regcache, E_MCRH_REGNUM,
209 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
210 
    break;
211 
  case E_MCRL_REGNUM:
212 
    regcache_raw_supply (regcache, E_MCRL_REGNUM,
213 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
214 
    break;
215 
  case E_MCVF_REGNUM:
216 
    regcache_raw_supply (regcache, E_MCVF_REGNUM,
217 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
218 
    break;
219 
  case E_FPCR_REGNUM:
220 
    /* FPCR is numbered among the GP regs, but handled as an FP reg.
221 
       Do nothing.  */
222 
    break;
223 
  case E_FPCR_REGNUM + 1:
224 
    /* The two unused registers beyond fpcr are inaccessible.  */
225 
    memset (zerobuf, 0, MAX_REGISTER_SIZE);
226 
    regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf);
227 
    break;
228 
  case E_FPCR_REGNUM + 2:
229 
    memset (zerobuf, 0, MAX_REGISTER_SIZE);
230 
    regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf);
231 
    break;
232 
  default:      /* An error, obviously, but should we error out?  */
233 
    break;
234 
  case -1:
235 
    for (i = 0; i < MN10300_ELF_NGREG; i++)
236 
      am33_supply_gregset_method (regset, regcache, i, gregs, len);
237 
    break;
238 
  }
239 
  return;
240 
}
241 
 
242 
/* Copy fp register value of REGNUM from regset to regcache.
243 
   If REGNUM is -1, do this for all fp registers in regset. */
244 
 
245 
static void
246 
am33_supply_fpregset_method (const struct regset *regset,
247 
                             struct regcache *regcache,
248 
                             int regnum, const void *fpregs, size_t len)
249 
{
250 
  const mn10300_elf_fpregset_t *fpregset = fpregs;
251 
 
252 
  gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
253 
 
254 
  if (regnum == -1)
255 
    {
256 
      int i;
257 
 
258 
      for (i = 0; i < MN10300_ELF_NFPREG; i++)
259 
        am33_supply_fpregset_method (regset, regcache,
260 
                                     E_FS0_REGNUM + i, fpregs, len);
261 
      am33_supply_fpregset_method (regset, regcache,
262 
                                   E_FPCR_REGNUM, fpregs, len);
263 
    }
264 
  else if (regnum == E_FPCR_REGNUM)
265 
    regcache_raw_supply (regcache, E_FPCR_REGNUM,
266 
                         &fpregset->fpcr);
267 
  else if (E_FS0_REGNUM <= regnum && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
268 
    regcache_raw_supply (regcache, regnum,
269 
                         &fpregset->fpregs[regnum - E_FS0_REGNUM]);
270 
 
271 
  return;
272 
}
273 
 
274 
/* Copy register values from regcache to regset.  */
275 
 
276 
static void
277 
am33_collect_gregset_method (const struct regset *regset,
278 
                             const struct regcache *regcache,
279 
                             int regnum, void *gregs, size_t len)
280 
{
281 
  mn10300_elf_gregset_t *regp = gregs;
282 
  int i;
283 
 
284 
  gdb_assert (len == sizeof (mn10300_elf_gregset_t));
285 
 
286 
  switch (regnum) {
287 
  case E_D0_REGNUM:
288 
    regcache_raw_collect (regcache, E_D0_REGNUM,
289 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
290 
    break;
291 
  case E_D1_REGNUM:
292 
    regcache_raw_collect (regcache, E_D1_REGNUM,
293 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
294 
    break;
295 
  case E_D2_REGNUM:
296 
    regcache_raw_collect (regcache, E_D2_REGNUM,
297 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
298 
    break;
299 
  case E_D3_REGNUM:
300 
    regcache_raw_collect (regcache, E_D3_REGNUM,
301 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
302 
    break;
303 
  case E_A0_REGNUM:
304 
    regcache_raw_collect (regcache, E_A0_REGNUM,
305 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
306 
    break;
307 
  case E_A1_REGNUM:
308 
    regcache_raw_collect (regcache, E_A1_REGNUM,
309 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
310 
    break;
311 
  case E_A2_REGNUM:
312 
    regcache_raw_collect (regcache, E_A2_REGNUM,
313 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
314 
    break;
315 
  case E_A3_REGNUM:
316 
    regcache_raw_collect (regcache, E_A3_REGNUM,
317 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
318 
    break;
319 
  case E_SP_REGNUM:
320 
    regcache_raw_collect (regcache, E_SP_REGNUM,
321 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
322 
    break;
323 
  case E_PC_REGNUM:
324 
    regcache_raw_collect (regcache, E_PC_REGNUM,
325 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
326 
    break;
327 
  case E_MDR_REGNUM:
328 
    regcache_raw_collect (regcache, E_MDR_REGNUM,
329 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
330 
    break;
331 
  case E_PSW_REGNUM:
332 
    regcache_raw_collect (regcache, E_PSW_REGNUM,
333 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
334 
    break;
335 
  case E_LIR_REGNUM:
336 
    regcache_raw_collect (regcache, E_LIR_REGNUM,
337 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
338 
    break;
339 
  case E_LAR_REGNUM:
340 
    regcache_raw_collect (regcache, E_LAR_REGNUM,
341 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
342 
    break;
343 
  case E_MDRQ_REGNUM:
344 
    regcache_raw_collect (regcache, E_MDRQ_REGNUM,
345 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
346 
    break;
347 
  case E_E0_REGNUM:
348 
    regcache_raw_collect (regcache, E_E0_REGNUM,
349 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
350 
    break;
351 
  case E_E1_REGNUM:
352 
    regcache_raw_collect (regcache, E_E1_REGNUM,
353 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
354 
    break;
355 
  case E_E2_REGNUM:
356 
    regcache_raw_collect (regcache, E_E2_REGNUM,
357 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
358 
    break;
359 
  case E_E3_REGNUM:
360 
    regcache_raw_collect (regcache, E_E3_REGNUM,
361 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
362 
    break;
363 
  case E_E4_REGNUM:
364 
    regcache_raw_collect (regcache, E_E4_REGNUM,
365 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
366 
    break;
367 
  case E_E5_REGNUM:
368 
    regcache_raw_collect (regcache, E_E5_REGNUM,
369 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
370 
    break;
371 
  case E_E6_REGNUM:
372 
    regcache_raw_collect (regcache, E_E6_REGNUM,
373 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
374 
    break;
375 
  case E_E7_REGNUM:
376 
    regcache_raw_collect (regcache, E_E7_REGNUM,
377 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
378 
    break;
379 
 
380 
    /* ssp, msp, and usp are inaccessible.  */
381 
  case E_E8_REGNUM:
382 
    /* The gregset struct has noplace to put this: do nothing.  */
383 
    break;
384 
  case E_E9_REGNUM:
385 
    /* The gregset struct has noplace to put this: do nothing.  */
386 
    break;
387 
  case E_E10_REGNUM:
388 
    /* The gregset struct has noplace to put this: do nothing.  */
389 
    break;
390 
  case E_MCRH_REGNUM:
391 
    regcache_raw_collect (regcache, E_MCRH_REGNUM,
392 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
393 
    break;
394 
  case E_MCRL_REGNUM:
395 
    regcache_raw_collect (regcache, E_MCRL_REGNUM,
396 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
397 
    break;
398 
  case E_MCVF_REGNUM:
399 
    regcache_raw_collect (regcache, E_MCVF_REGNUM,
400 
                         (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
401 
    break;
402 
  case E_FPCR_REGNUM:
403 
    /* FPCR is numbered among the GP regs, but handled as an FP reg.
404 
       Do nothing.  */
405 
    break;
406 
  case E_FPCR_REGNUM + 1:
407 
    /* The gregset struct has noplace to put this: do nothing.  */
408 
    break;
409 
  case E_FPCR_REGNUM + 2:
410 
    /* The gregset struct has noplace to put this: do nothing.  */
411 
    break;
412 
  default:      /* An error, obviously, but should we error out?  */
413 
    break;
414 
  case -1:
415 
    for (i = 0; i < MN10300_ELF_NGREG; i++)
416 
      am33_collect_gregset_method (regset, regcache, i, gregs, len);
417 
    break;
418 
  }
419 
  return;
420 
}
421 
 
422 
/* Copy fp register values from regcache to regset.  */
423 
 
424 
static void
425 
am33_collect_fpregset_method (const struct regset *regset,
426 
                              const struct regcache *regcache,
427 
                              int regnum, void *fpregs, size_t len)
428 
{
429 
  mn10300_elf_fpregset_t *fpregset = fpregs;
430 
 
431 
  gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
432 
 
433 
  if (regnum == -1)
434 
    {
435 
      int i;
436 
      for (i = 0; i < MN10300_ELF_NFPREG; i++)
437 
        am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
438 
                                      fpregs, len);
439 
      am33_collect_fpregset_method (regset, regcache,
440 
                                    E_FPCR_REGNUM, fpregs, len);
441 
    }
442 
  else if (regnum == E_FPCR_REGNUM)
443 
    regcache_raw_collect (regcache, E_FPCR_REGNUM,
444 
                          &fpregset->fpcr);
445 
  else if (E_FS0_REGNUM <= regnum
446 
           && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
447 
    regcache_raw_collect (regcache, regnum,
448 
                          &fpregset->fpregs[regnum - E_FS0_REGNUM]);
449 
 
450 
  return;
451 
}
452 
 
453 
/* Create a struct regset from a corefile register section.  */
454 
 
455 
static const struct regset *
456 
am33_regset_from_core_section (struct gdbarch *gdbarch,
457 
                               const char *sect_name,
458 
                               size_t sect_size)
459 
{
460 
  /* We will call regset_alloc, and pass the names of the supply and
461 
     collect methods.  */
462 
 
463 
  if (sect_size == sizeof (mn10300_elf_fpregset_t))
464 
    return regset_alloc (gdbarch,
465 
                         am33_supply_fpregset_method,
466 
                         am33_collect_fpregset_method);
467 
  else
468 
    return regset_alloc (gdbarch,
469 
                         am33_supply_gregset_method,
470 
                         am33_collect_gregset_method);
471 
}
472 
 
473 
static void
474 
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
475 
                                struct frame_info *next_frame,
476 
                                struct trad_frame_cache *this_cache,
477 
                                CORE_ADDR func);
478 
 
479 
static const struct tramp_frame am33_linux_sigframe = {
480 
  SIGTRAMP_FRAME,
481 
  1,
482 
  {
483 
    /* mov     119,d0 */
484 
    { 0x2c, -1 },
485 
    { 0x77, -1 },
486 
    { 0x00, -1 },
487 
    /* syscall 0 */
488 
    { 0xf0, -1 },
489 
    { 0xe0, -1 },
490 
    { TRAMP_SENTINEL_INSN, -1 }
491 
  },
492 
  am33_linux_sigframe_cache_init
493 
};
494 
 
495 
static const struct tramp_frame am33_linux_rt_sigframe = {
496 
  SIGTRAMP_FRAME,
497 
  1,
498 
  {
499 
    /* mov     173,d0 */
500 
    { 0x2c, -1 },
501 
    { 0xad, -1 },
502 
    { 0x00, -1 },
503 
    /* syscall 0 */
504 
    { 0xf0, -1 },
505 
    { 0xe0, -1 },
506 
    { TRAMP_SENTINEL_INSN, -1 }
507 
  },
508 
  am33_linux_sigframe_cache_init
509 
};
510 
 
511 
/* Relevant struct definitions for signal handling...
512 
 
513 
From arch/mn10300/kernel/sigframe.h:
514 
 
515 
struct sigframe
516 
{
517 
        void (*pretcode)(void);
518 
        int sig;
519 
        struct sigcontext *psc;
520 
        struct sigcontext sc;
521 
        struct fpucontext fpuctx;
522 
        unsigned long extramask[_NSIG_WORDS-1];
523 
        char retcode[8];
524 
};
525 
 
526 
struct rt_sigframe
527 
{
528 
        void (*pretcode)(void);
529 
        int sig;
530 
        struct siginfo *pinfo;
531 
        void *puc;
532 
        struct siginfo info;
533 
        struct ucontext uc;
534 
        struct fpucontext fpuctx;
535 
        char retcode[8];
536 
};
537 
 
538 
From include/asm-mn10300/ucontext.h:
539 
 
540 
struct ucontext {
541 
        unsigned long     uc_flags;
542 
        struct ucontext  *uc_link;
543 
        stack_t           uc_stack;
544 
        struct sigcontext uc_mcontext;
545 
        sigset_t          uc_sigmask;
546 
};
547 
 
548 
From include/asm-mn10300/sigcontext.h:
549 
 
550 
struct fpucontext {
551 
        unsigned long   fs[32];
552 
        unsigned long   fpcr;
553 
};
554 
 
555 
struct sigcontext {
556 
        unsigned long   d0;
557 
        unsigned long   d1;
558 
        unsigned long   d2;
559 
        unsigned long   d3;
560 
        unsigned long   a0;
561 
        unsigned long   a1;
562 
        unsigned long   a2;
563 
        unsigned long   a3;
564 
        unsigned long   e0;
565 
        unsigned long   e1;
566 
        unsigned long   e2;
567 
        unsigned long   e3;
568 
        unsigned long   e4;
569 
        unsigned long   e5;
570 
        unsigned long   e6;
571 
        unsigned long   e7;
572 
        unsigned long   lar;
573 
        unsigned long   lir;
574 
        unsigned long   mdr;
575 
        unsigned long   mcvf;
576 
        unsigned long   mcrl;
577 
        unsigned long   mcrh;
578 
        unsigned long   mdrq;
579 
        unsigned long   sp;
580 
        unsigned long   epsw;
581 
        unsigned long   pc;
582 
        struct fpucontext *fpucontext;
583 
        unsigned long   oldmask;
584 
}; */
585 
 
586 
 
587 
#define AM33_SIGCONTEXT_D0 0
588 
#define AM33_SIGCONTEXT_D1 4
589 
#define AM33_SIGCONTEXT_D2 8
590 
#define AM33_SIGCONTEXT_D3 12
591 
#define AM33_SIGCONTEXT_A0 16
592 
#define AM33_SIGCONTEXT_A1 20
593 
#define AM33_SIGCONTEXT_A2 24
594 
#define AM33_SIGCONTEXT_A3 28
595 
#define AM33_SIGCONTEXT_E0 32
596 
#define AM33_SIGCONTEXT_E1 36
597 
#define AM33_SIGCONTEXT_E2 40
598 
#define AM33_SIGCONTEXT_E3 44
599 
#define AM33_SIGCONTEXT_E4 48
600 
#define AM33_SIGCONTEXT_E5 52
601 
#define AM33_SIGCONTEXT_E6 56
602 
#define AM33_SIGCONTEXT_E7 60
603 
#define AM33_SIGCONTEXT_LAR 64
604 
#define AM33_SIGCONTEXT_LIR 68
605 
#define AM33_SIGCONTEXT_MDR 72
606 
#define AM33_SIGCONTEXT_MCVF 76
607 
#define AM33_SIGCONTEXT_MCRL 80
608 
#define AM33_SIGCONTEXT_MCRH 84
609 
#define AM33_SIGCONTEXT_MDRQ 88
610 
#define AM33_SIGCONTEXT_SP 92
611 
#define AM33_SIGCONTEXT_EPSW 96
612 
#define AM33_SIGCONTEXT_PC 100
613 
#define AM33_SIGCONTEXT_FPUCONTEXT 104
614 
 
615 
 
616 
static void
617 
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
618 
                                struct frame_info *next_frame,
619 
                                struct trad_frame_cache *this_cache,
620 
                                CORE_ADDR func)
621 
{
622 
  CORE_ADDR sc_base, fpubase;
623 
  int i;
624 
 
625 
  sc_base = frame_unwind_register_unsigned (next_frame, E_SP_REGNUM);
626 
  if (self == &am33_linux_sigframe)
627 
    {
628 
      sc_base += 8;
629 
      sc_base = get_frame_memory_unsigned (next_frame, sc_base, 4);
630 
    }
631 
  else
632 
    {
633 
      sc_base += 12;
634 
      sc_base = get_frame_memory_unsigned (next_frame, sc_base, 4);
635 
      sc_base += 20;
636 
    }
637 
 
638 
  trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
639 
                           sc_base + AM33_SIGCONTEXT_D0);
640 
  trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
641 
                           sc_base + AM33_SIGCONTEXT_D1);
642 
  trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
643 
                           sc_base + AM33_SIGCONTEXT_D2);
644 
  trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
645 
                           sc_base + AM33_SIGCONTEXT_D3);
646 
 
647 
  trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
648 
                           sc_base + AM33_SIGCONTEXT_A0);
649 
  trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
650 
                           sc_base + AM33_SIGCONTEXT_A1);
651 
  trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
652 
                           sc_base + AM33_SIGCONTEXT_A2);
653 
  trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
654 
                           sc_base + AM33_SIGCONTEXT_A3);
655 
 
656 
  trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
657 
                           sc_base + AM33_SIGCONTEXT_E0);
658 
  trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
659 
                           sc_base + AM33_SIGCONTEXT_E1);
660 
  trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
661 
                           sc_base + AM33_SIGCONTEXT_E2);
662 
  trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
663 
                           sc_base + AM33_SIGCONTEXT_E3);
664 
  trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
665 
                           sc_base + AM33_SIGCONTEXT_E4);
666 
  trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
667 
                           sc_base + AM33_SIGCONTEXT_E5);
668 
  trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
669 
                           sc_base + AM33_SIGCONTEXT_E6);
670 
  trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
671 
                           sc_base + AM33_SIGCONTEXT_E7);
672 
 
673 
  trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
674 
                           sc_base + AM33_SIGCONTEXT_LAR);
675 
  trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
676 
                           sc_base + AM33_SIGCONTEXT_LIR);
677 
  trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
678 
                           sc_base + AM33_SIGCONTEXT_MDR);
679 
  trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
680 
                           sc_base + AM33_SIGCONTEXT_MCVF);
681 
  trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
682 
                           sc_base + AM33_SIGCONTEXT_MCRL);
683 
  trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
684 
                           sc_base + AM33_SIGCONTEXT_MDRQ);
685 
 
686 
  trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
687 
                           sc_base + AM33_SIGCONTEXT_SP);
688 
  trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
689 
                           sc_base + AM33_SIGCONTEXT_EPSW);
690 
  trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
691 
                           sc_base + AM33_SIGCONTEXT_PC);
692 
 
693 
  fpubase = get_frame_memory_unsigned (next_frame,
694 
                                       sc_base + AM33_SIGCONTEXT_FPUCONTEXT, 4);
695 
  if (fpubase)
696 
    {
697 
      for (i = 0; i < 32; i++)
698 
        {
699 
          trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
700 
                                   fpubase + 4 * i);
701 
        }
702 
      trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
703 
    }
704 
 
705 
  trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
706 
}
707 
 
708 
/* AM33 GNU/Linux osabi has been recognized.
709 
   Now's our chance to register our corefile handling.  */
710 
 
711 
static void
712 
am33_linux_init_osabi (struct gdbarch_info gdbinfo, struct gdbarch *gdbarch)
713 
{
714 
  set_gdbarch_regset_from_core_section (gdbarch,
715 
                                        am33_regset_from_core_section);
716 
  set_solib_svr4_fetch_link_map_offsets
717 
    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
718 
 
719 
  tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
720 
  tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
721 
}
722 
 
723 
void
724 
_initialize_mn10300_linux_tdep (void)
725 
{
726 
  gdbarch_register_osabi (bfd_arch_mn10300, 0,
727 
                          GDB_OSABI_LINUX, am33_linux_init_osabi);
728 
}
729 
 

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