Commit | Line | Data |
---|---|---|
a4b6fc86 AC |
1 | /* Motorola m68k native support for GNU/Linux. |
2 | ||
6aba47ca | 3 | Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
10d6c8cd | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
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 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
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. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "language.h" | |
27 | #include "gdbcore.h" | |
32eeb91a | 28 | #include "gdb_string.h" |
4e052eda | 29 | #include "regcache.h" |
10d6c8cd DJ |
30 | #include "target.h" |
31 | #include "linux-nat.h" | |
c906108c | 32 | |
32eeb91a AS |
33 | #include "m68k-tdep.h" |
34 | ||
c906108c SS |
35 | #include <sys/param.h> |
36 | #include <sys/dir.h> | |
37 | #include <signal.h> | |
0280a90a | 38 | #include <sys/ptrace.h> |
c906108c SS |
39 | #include <sys/user.h> |
40 | #include <sys/ioctl.h> | |
41 | #include <fcntl.h> | |
42 | #include <sys/procfs.h> | |
43 | ||
0280a90a AS |
44 | #ifdef HAVE_SYS_REG_H |
45 | #include <sys/reg.h> | |
46 | #endif | |
47 | ||
c906108c SS |
48 | #include <sys/file.h> |
49 | #include "gdb_stat.h" | |
50 | ||
51 | #include "floatformat.h" | |
52 | ||
53 | #include "target.h" | |
c906108c | 54 | \f |
77949794 | 55 | /* This table must line up with REGISTER_NAME in "m68k-tdep.c". */ |
c5aa993b | 56 | static const int regmap[] = |
c906108c SS |
57 | { |
58 | PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7, | |
59 | PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP, | |
60 | PT_SR, PT_PC, | |
61 | /* PT_FP0, ..., PT_FP7 */ | |
62 | 21, 24, 27, 30, 33, 36, 39, 42, | |
63 | /* PT_FPCR, PT_FPSR, PT_FPIAR */ | |
64 | 45, 46, 47 | |
65 | }; | |
66 | ||
0280a90a AS |
67 | /* Which ptrace request retrieves which registers? |
68 | These apply to the corresponding SET requests as well. */ | |
69 | #define NUM_GREGS (18) | |
70 | #define MAX_NUM_REGS (NUM_GREGS + 11) | |
71 | ||
72 | int | |
73 | getregs_supplies (int regno) | |
74 | { | |
75 | return 0 <= regno && regno < NUM_GREGS; | |
76 | } | |
77 | ||
78 | int | |
79 | getfpregs_supplies (int regno) | |
80 | { | |
32eeb91a | 81 | return FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM; |
0280a90a AS |
82 | } |
83 | ||
84 | /* Does the current host support the GETREGS request? */ | |
85 | int have_ptrace_getregs = | |
86 | #ifdef HAVE_PTRACE_GETREGS | |
87 | 1 | |
88 | #else | |
89 | 0 | |
90 | #endif | |
91 | ; | |
92 | ||
93 | \f | |
94 | ||
0280a90a AS |
95 | /* Fetching registers directly from the U area, one at a time. */ |
96 | ||
97 | /* FIXME: This duplicates code from `inptrace.c'. The problem is that we | |
98 | define FETCH_INFERIOR_REGISTERS since we want to use our own versions | |
99 | of {fetch,store}_inferior_registers that use the GETREGS request. This | |
100 | means that the code in `infptrace.c' is #ifdef'd out. But we need to | |
101 | fall back on that code when GDB is running on top of a kernel that | |
102 | doesn't support the GETREGS request. */ | |
103 | ||
104 | #ifndef PT_READ_U | |
105 | #define PT_READ_U PTRACE_PEEKUSR | |
106 | #endif | |
107 | #ifndef PT_WRITE_U | |
108 | #define PT_WRITE_U PTRACE_POKEUSR | |
109 | #endif | |
110 | ||
0280a90a AS |
111 | /* Fetch one register. */ |
112 | ||
113 | static void | |
114 | fetch_register (int regno) | |
115 | { | |
116 | /* This isn't really an address. But ptrace thinks of it as one. */ | |
117 | CORE_ADDR regaddr; | |
118 | char mess[128]; /* For messages */ | |
52f0bd74 | 119 | int i; |
123a958e | 120 | char buf[MAX_REGISTER_SIZE]; |
0280a90a AS |
121 | int tid; |
122 | ||
123 | if (CANNOT_FETCH_REGISTER (regno)) | |
124 | { | |
8de307e0 | 125 | memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */ |
23a6d369 | 126 | regcache_raw_supply (current_regcache, regno, buf); |
0280a90a AS |
127 | return; |
128 | } | |
129 | ||
130 | /* Overload thread id onto process id */ | |
8de307e0 AS |
131 | tid = TIDGET (inferior_ptid); |
132 | if (tid == 0) | |
0280a90a AS |
133 | tid = PIDGET (inferior_ptid); /* no thread id, just use process id */ |
134 | ||
de732108 | 135 | regaddr = 4 * regmap[regno]; |
8de307e0 | 136 | for (i = 0; i < register_size (current_gdbarch, regno); |
5f402660 | 137 | i += sizeof (PTRACE_TYPE_RET)) |
0280a90a AS |
138 | { |
139 | errno = 0; | |
5f402660 UW |
140 | *(PTRACE_TYPE_RET *) &buf[i] = ptrace (PT_READ_U, tid, |
141 | (PTRACE_TYPE_ARG3) regaddr, 0); | |
142 | regaddr += sizeof (PTRACE_TYPE_RET); | |
0280a90a AS |
143 | if (errno != 0) |
144 | { | |
145 | sprintf (mess, "reading register %s (#%d)", | |
146 | REGISTER_NAME (regno), regno); | |
147 | perror_with_name (mess); | |
148 | } | |
149 | } | |
23a6d369 | 150 | regcache_raw_supply (current_regcache, regno, buf); |
0280a90a AS |
151 | } |
152 | ||
153 | /* Fetch register values from the inferior. | |
154 | If REGNO is negative, do this for all registers. | |
155 | Otherwise, REGNO specifies which register (so we can save time). */ | |
c906108c | 156 | |
10d6c8cd | 157 | static void |
0280a90a AS |
158 | old_fetch_inferior_registers (int regno) |
159 | { | |
160 | if (regno >= 0) | |
161 | { | |
162 | fetch_register (regno); | |
163 | } | |
164 | else | |
165 | { | |
166 | for (regno = 0; regno < NUM_REGS; regno++) | |
167 | { | |
168 | fetch_register (regno); | |
169 | } | |
170 | } | |
171 | } | |
172 | ||
173 | /* Store one register. */ | |
174 | ||
175 | static void | |
176 | store_register (int regno) | |
177 | { | |
178 | /* This isn't really an address. But ptrace thinks of it as one. */ | |
179 | CORE_ADDR regaddr; | |
180 | char mess[128]; /* For messages */ | |
52f0bd74 | 181 | int i; |
0280a90a | 182 | int tid; |
d9d9c31f | 183 | char buf[MAX_REGISTER_SIZE]; |
0280a90a AS |
184 | |
185 | if (CANNOT_STORE_REGISTER (regno)) | |
186 | { | |
187 | return; | |
188 | } | |
189 | ||
190 | /* Overload thread id onto process id */ | |
8de307e0 AS |
191 | tid = TIDGET (inferior_ptid); |
192 | if (tid == 0) | |
0280a90a AS |
193 | tid = PIDGET (inferior_ptid); /* no thread id, just use process id */ |
194 | ||
de732108 | 195 | regaddr = 4 * regmap[regno]; |
9852326a AS |
196 | |
197 | /* Put the contents of regno into a local buffer */ | |
822c9732 | 198 | regcache_raw_collect (current_regcache, regno, buf); |
9852326a AS |
199 | |
200 | /* Store the local buffer into the inferior a chunk at the time. */ | |
8de307e0 | 201 | for (i = 0; i < register_size (current_gdbarch, regno); |
5f402660 | 202 | i += sizeof (PTRACE_TYPE_RET)) |
0280a90a AS |
203 | { |
204 | errno = 0; | |
5f402660 UW |
205 | ptrace (PT_WRITE_U, tid, (PTRACE_TYPE_ARG3) regaddr, |
206 | *(PTRACE_TYPE_RET *) (buf + i)); | |
207 | regaddr += sizeof (PTRACE_TYPE_RET); | |
0280a90a AS |
208 | if (errno != 0) |
209 | { | |
210 | sprintf (mess, "writing register %s (#%d)", | |
211 | REGISTER_NAME (regno), regno); | |
212 | perror_with_name (mess); | |
213 | } | |
214 | } | |
215 | } | |
216 | ||
217 | /* Store our register values back into the inferior. | |
218 | If REGNO is negative, do this for all registers. | |
219 | Otherwise, REGNO specifies which register (so we can save time). */ | |
220 | ||
10d6c8cd | 221 | static void |
0280a90a AS |
222 | old_store_inferior_registers (int regno) |
223 | { | |
224 | if (regno >= 0) | |
225 | { | |
226 | store_register (regno); | |
227 | } | |
228 | else | |
229 | { | |
230 | for (regno = 0; regno < NUM_REGS; regno++) | |
231 | { | |
232 | store_register (regno); | |
233 | } | |
234 | } | |
235 | } | |
236 | \f | |
f175af98 DJ |
237 | /* Given a pointer to a general register set in /proc format |
238 | (elf_gregset_t *), unpack the register contents and supply | |
239 | them as gdb's idea of the current register values. */ | |
c906108c SS |
240 | |
241 | ||
242 | /* Note both m68k-tdep.c and m68klinux-nat.c contain definitions | |
243 | for supply_gregset and supply_fpregset. The definitions | |
244 | in m68k-tdep.c are valid if USE_PROC_FS is defined. Otherwise, | |
245 | the definitions in m68klinux-nat.c will be used. This is a | |
246 | bit of a hack. The supply_* routines do not belong in | |
247 | *_tdep.c files. But, there are several lynx ports that currently | |
c5aa993b | 248 | depend on these definitions. */ |
c906108c SS |
249 | |
250 | #ifndef USE_PROC_FS | |
251 | ||
c60c0f5f MS |
252 | /* Prototypes for supply_gregset etc. */ |
253 | #include "gregset.h" | |
254 | ||
c906108c | 255 | void |
f175af98 | 256 | supply_gregset (elf_gregset_t *gregsetp) |
c906108c | 257 | { |
0280a90a | 258 | elf_greg_t *regp = (elf_greg_t *) gregsetp; |
c906108c SS |
259 | int regi; |
260 | ||
32eeb91a | 261 | for (regi = M68K_D0_REGNUM; regi <= SP_REGNUM; regi++) |
23a6d369 AC |
262 | regcache_raw_supply (current_regcache, regi, (char *) ®p[regmap[regi]]); |
263 | regcache_raw_supply (current_regcache, PS_REGNUM, (char *) ®p[PT_SR]); | |
264 | regcache_raw_supply (current_regcache, PC_REGNUM, (char *) ®p[PT_PC]); | |
0280a90a AS |
265 | } |
266 | ||
267 | /* Fill register REGNO (if it is a general-purpose register) in | |
268 | *GREGSETPS with the value in GDB's register array. If REGNO is -1, | |
269 | do this for all registers. */ | |
270 | void | |
271 | fill_gregset (elf_gregset_t *gregsetp, int regno) | |
272 | { | |
273 | elf_greg_t *regp = (elf_greg_t *) gregsetp; | |
274 | int i; | |
275 | ||
276 | for (i = 0; i < NUM_GREGS; i++) | |
8de307e0 | 277 | if (regno == -1 || regno == i) |
822c9732 | 278 | regcache_raw_collect (current_regcache, i, regp + regmap[i]); |
0280a90a AS |
279 | } |
280 | ||
281 | #ifdef HAVE_PTRACE_GETREGS | |
282 | ||
283 | /* Fetch all general-purpose registers from process/thread TID and | |
284 | store their values in GDB's register array. */ | |
285 | ||
286 | static void | |
287 | fetch_regs (int tid) | |
288 | { | |
289 | elf_gregset_t regs; | |
290 | ||
291 | if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0) | |
292 | { | |
293 | if (errno == EIO) | |
294 | { | |
295 | /* The kernel we're running on doesn't support the GETREGS | |
296 | request. Reset `have_ptrace_getregs'. */ | |
297 | have_ptrace_getregs = 0; | |
298 | return; | |
299 | } | |
300 | ||
e2e0b3e5 | 301 | perror_with_name (_("Couldn't get registers")); |
0280a90a AS |
302 | } |
303 | ||
304 | supply_gregset (®s); | |
c906108c SS |
305 | } |
306 | ||
0280a90a AS |
307 | /* Store all valid general-purpose registers in GDB's register array |
308 | into the process/thread specified by TID. */ | |
309 | ||
310 | static void | |
311 | store_regs (int tid, int regno) | |
312 | { | |
313 | elf_gregset_t regs; | |
314 | ||
315 | if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0) | |
e2e0b3e5 | 316 | perror_with_name (_("Couldn't get registers")); |
0280a90a AS |
317 | |
318 | fill_gregset (®s, regno); | |
319 | ||
320 | if (ptrace (PTRACE_SETREGS, tid, 0, (int) ®s) < 0) | |
e2e0b3e5 | 321 | perror_with_name (_("Couldn't write registers")); |
0280a90a AS |
322 | } |
323 | ||
324 | #else | |
325 | ||
326 | static void fetch_regs (int tid) {} | |
327 | static void store_regs (int tid, int regno) {} | |
328 | ||
329 | #endif | |
330 | ||
331 | \f | |
332 | /* Transfering floating-point registers between GDB, inferiors and cores. */ | |
333 | ||
334 | /* What is the address of fpN within the floating-point register set F? */ | |
335 | #define FPREG_ADDR(f, n) ((char *) &(f)->fpregs[(n) * 3]) | |
336 | ||
337 | /* Fill GDB's register array with the floating-point register values in | |
338 | *FPREGSETP. */ | |
c906108c | 339 | |
c5aa993b | 340 | void |
f175af98 | 341 | supply_fpregset (elf_fpregset_t *fpregsetp) |
c906108c SS |
342 | { |
343 | int regi; | |
344 | ||
32eeb91a | 345 | for (regi = FP0_REGNUM; regi < FP0_REGNUM + 8; regi++) |
23a6d369 AC |
346 | regcache_raw_supply (current_regcache, regi, |
347 | FPREG_ADDR (fpregsetp, regi - FP0_REGNUM)); | |
348 | regcache_raw_supply (current_regcache, M68K_FPC_REGNUM, | |
349 | (char *) &fpregsetp->fpcntl[0]); | |
350 | regcache_raw_supply (current_regcache, M68K_FPS_REGNUM, | |
351 | (char *) &fpregsetp->fpcntl[1]); | |
352 | regcache_raw_supply (current_regcache, M68K_FPI_REGNUM, | |
353 | (char *) &fpregsetp->fpcntl[2]); | |
c906108c SS |
354 | } |
355 | ||
0280a90a AS |
356 | /* Fill register REGNO (if it is a floating-point register) in |
357 | *FPREGSETP with the value in GDB's register array. If REGNO is -1, | |
358 | do this for all registers. */ | |
359 | ||
360 | void | |
361 | fill_fpregset (elf_fpregset_t *fpregsetp, int regno) | |
362 | { | |
363 | int i; | |
364 | ||
365 | /* Fill in the floating-point registers. */ | |
366 | for (i = FP0_REGNUM; i < FP0_REGNUM + 8; i++) | |
367 | if (regno == -1 || regno == i) | |
822c9732 AC |
368 | regcache_raw_collect (current_regcache, i, |
369 | FPREG_ADDR (fpregsetp, i - FP0_REGNUM)); | |
0280a90a AS |
370 | |
371 | /* Fill in the floating-point control registers. */ | |
32eeb91a | 372 | for (i = M68K_FPC_REGNUM; i <= M68K_FPI_REGNUM; i++) |
0280a90a | 373 | if (regno == -1 || regno == i) |
822c9732 AC |
374 | regcache_raw_collect (current_regcache, i, |
375 | (char *) &fpregsetp->fpcntl[i - M68K_FPC_REGNUM]); | |
0280a90a AS |
376 | } |
377 | ||
378 | #ifdef HAVE_PTRACE_GETREGS | |
379 | ||
380 | /* Fetch all floating-point registers from process/thread TID and store | |
381 | thier values in GDB's register array. */ | |
382 | ||
383 | static void | |
384 | fetch_fpregs (int tid) | |
385 | { | |
386 | elf_fpregset_t fpregs; | |
387 | ||
388 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 389 | perror_with_name (_("Couldn't get floating point status")); |
0280a90a AS |
390 | |
391 | supply_fpregset (&fpregs); | |
392 | } | |
393 | ||
394 | /* Store all valid floating-point registers in GDB's register array | |
395 | into the process/thread specified by TID. */ | |
396 | ||
397 | static void | |
398 | store_fpregs (int tid, int regno) | |
399 | { | |
400 | elf_fpregset_t fpregs; | |
401 | ||
402 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 403 | perror_with_name (_("Couldn't get floating point status")); |
0280a90a AS |
404 | |
405 | fill_fpregset (&fpregs, regno); | |
406 | ||
407 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 408 | perror_with_name (_("Couldn't write floating point status")); |
0280a90a AS |
409 | } |
410 | ||
411 | #else | |
412 | ||
413 | static void fetch_fpregs (int tid) {} | |
414 | static void store_fpregs (int tid, int regno) {} | |
415 | ||
416 | #endif | |
417 | ||
c906108c | 418 | #endif |
0280a90a AS |
419 | \f |
420 | /* Transferring arbitrary registers between GDB and inferior. */ | |
421 | ||
422 | /* Fetch register REGNO from the child process. If REGNO is -1, do | |
423 | this for all registers (including the floating point and SSE | |
424 | registers). */ | |
425 | ||
10d6c8cd DJ |
426 | static void |
427 | m68k_linux_fetch_inferior_registers (int regno) | |
0280a90a AS |
428 | { |
429 | int tid; | |
430 | ||
431 | /* Use the old method of peeking around in `struct user' if the | |
432 | GETREGS request isn't available. */ | |
433 | if (! have_ptrace_getregs) | |
434 | { | |
435 | old_fetch_inferior_registers (regno); | |
436 | return; | |
437 | } | |
438 | ||
a4b6fc86 | 439 | /* GNU/Linux LWP ID's are process ID's. */ |
8de307e0 AS |
440 | tid = TIDGET (inferior_ptid); |
441 | if (tid == 0) | |
0280a90a | 442 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
f175af98 | 443 | |
0280a90a AS |
444 | /* Use the PTRACE_GETFPXREGS request whenever possible, since it |
445 | transfers more registers in one system call, and we'll cache the | |
446 | results. But remember that fetch_fpxregs can fail, and return | |
447 | zero. */ | |
448 | if (regno == -1) | |
449 | { | |
450 | fetch_regs (tid); | |
451 | ||
452 | /* The call above might reset `have_ptrace_getregs'. */ | |
453 | if (! have_ptrace_getregs) | |
454 | { | |
455 | old_fetch_inferior_registers (-1); | |
456 | return; | |
457 | } | |
458 | ||
459 | fetch_fpregs (tid); | |
460 | return; | |
461 | } | |
462 | ||
463 | if (getregs_supplies (regno)) | |
464 | { | |
465 | fetch_regs (tid); | |
466 | return; | |
467 | } | |
468 | ||
469 | if (getfpregs_supplies (regno)) | |
470 | { | |
471 | fetch_fpregs (tid); | |
472 | return; | |
473 | } | |
474 | ||
475 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 476 | _("Got request for bad register number %d."), regno); |
0280a90a AS |
477 | } |
478 | ||
479 | /* Store register REGNO back into the child process. If REGNO is -1, | |
480 | do this for all registers (including the floating point and SSE | |
481 | registers). */ | |
10d6c8cd DJ |
482 | static void |
483 | m68k_linux_store_inferior_registers (int regno) | |
0280a90a AS |
484 | { |
485 | int tid; | |
486 | ||
487 | /* Use the old method of poking around in `struct user' if the | |
488 | SETREGS request isn't available. */ | |
489 | if (! have_ptrace_getregs) | |
490 | { | |
491 | old_store_inferior_registers (regno); | |
492 | return; | |
493 | } | |
494 | ||
a4b6fc86 | 495 | /* GNU/Linux LWP ID's are process ID's. */ |
8de307e0 AS |
496 | tid = TIDGET (inferior_ptid); |
497 | if (tid == 0) | |
0280a90a AS |
498 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
499 | ||
500 | /* Use the PTRACE_SETFPREGS requests whenever possible, since it | |
501 | transfers more registers in one system call. But remember that | |
502 | store_fpregs can fail, and return zero. */ | |
503 | if (regno == -1) | |
504 | { | |
505 | store_regs (tid, regno); | |
506 | store_fpregs (tid, regno); | |
507 | return; | |
508 | } | |
509 | ||
510 | if (getregs_supplies (regno)) | |
511 | { | |
512 | store_regs (tid, regno); | |
513 | return; | |
514 | } | |
515 | ||
516 | if (getfpregs_supplies (regno)) | |
517 | { | |
518 | store_fpregs (tid, regno); | |
519 | return; | |
520 | } | |
521 | ||
522 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 523 | _("Got request to store bad register number %d."), regno); |
0280a90a | 524 | } |
f175af98 DJ |
525 | \f |
526 | /* Interpreting register set info found in core files. */ | |
527 | ||
528 | /* Provide registers to GDB from a core file. | |
529 | ||
530 | (We can't use the generic version of this function in | |
531 | core-regset.c, because we need to use elf_gregset_t instead of | |
532 | gregset_t.) | |
533 | ||
534 | CORE_REG_SECT points to an array of bytes, which are the contents | |
535 | of a `note' from a core file which BFD thinks might contain | |
536 | register contents. CORE_REG_SIZE is its size. | |
537 | ||
538 | WHICH says which register set corelow suspects this is: | |
539 | 0 --- the general-purpose register set, in elf_gregset_t format | |
540 | 2 --- the floating-point register set, in elf_fpregset_t format | |
541 | ||
a4b6fc86 | 542 | REG_ADDR isn't used on GNU/Linux. */ |
f175af98 DJ |
543 | |
544 | static void | |
545 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, | |
546 | int which, CORE_ADDR reg_addr) | |
547 | { | |
548 | elf_gregset_t gregset; | |
549 | elf_fpregset_t fpregset; | |
550 | ||
551 | switch (which) | |
552 | { | |
553 | case 0: | |
554 | if (core_reg_size != sizeof (gregset)) | |
8a3fe4f8 | 555 | warning (_("Wrong size gregset in core file.")); |
f175af98 DJ |
556 | else |
557 | { | |
558 | memcpy (&gregset, core_reg_sect, sizeof (gregset)); | |
559 | supply_gregset (&gregset); | |
560 | } | |
561 | break; | |
562 | ||
563 | case 2: | |
564 | if (core_reg_size != sizeof (fpregset)) | |
8a3fe4f8 | 565 | warning (_("Wrong size fpregset in core file.")); |
f175af98 DJ |
566 | else |
567 | { | |
568 | memcpy (&fpregset, core_reg_sect, sizeof (fpregset)); | |
569 | supply_fpregset (&fpregset); | |
570 | } | |
571 | break; | |
572 | ||
573 | default: | |
574 | /* We've covered all the kinds of registers we know about here, | |
575 | so this must be something we wouldn't know what to do with | |
576 | anyway. Just ignore it. */ | |
577 | break; | |
578 | } | |
579 | } | |
c906108c | 580 | \f |
c5aa993b | 581 | |
a4b6fc86 AC |
582 | /* Register that we are able to handle GNU/Linux ELF core file |
583 | formats. */ | |
f175af98 DJ |
584 | |
585 | static struct core_fns linux_elf_core_fns = | |
586 | { | |
587 | bfd_target_elf_flavour, /* core_flavour */ | |
588 | default_check_format, /* check_format */ | |
589 | default_core_sniffer, /* core_sniffer */ | |
590 | fetch_core_registers, /* core_read_registers */ | |
591 | NULL /* next */ | |
592 | }; | |
593 | ||
10d6c8cd DJ |
594 | void _initialize_m68k_linux_nat (void); |
595 | ||
f175af98 | 596 | void |
5ae5f592 | 597 | _initialize_m68k_linux_nat (void) |
f175af98 | 598 | { |
10d6c8cd DJ |
599 | struct target_ops *t; |
600 | ||
601 | /* Fill in the generic GNU/Linux methods. */ | |
602 | t = linux_target (); | |
603 | ||
604 | /* Add our register access methods. */ | |
605 | t->to_fetch_registers = m68k_linux_fetch_inferior_registers; | |
606 | t->to_store_registers = m68k_linux_store_inferior_registers; | |
607 | ||
608 | /* Register the target. */ | |
f973ed9c | 609 | linux_nat_add_target (t); |
10d6c8cd | 610 | |
00e32a35 | 611 | deprecated_add_core_fns (&linux_elf_core_fns); |
f175af98 | 612 | } |