Commit | Line | Data |
---|---|---|
a4b6fc86 AC |
1 | /* Motorola m68k native support for GNU/Linux. |
2 | ||
61baf725 | 3 | Copyright (C) 1996-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 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/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "frame.h" | |
22 | #include "inferior.h" | |
23 | #include "language.h" | |
24 | #include "gdbcore.h" | |
4e052eda | 25 | #include "regcache.h" |
10d6c8cd DJ |
26 | #include "target.h" |
27 | #include "linux-nat.h" | |
c906108c | 28 | |
32eeb91a AS |
29 | #include "m68k-tdep.h" |
30 | ||
c906108c SS |
31 | #include <sys/dir.h> |
32 | #include <signal.h> | |
5826e159 | 33 | #include "nat/gdb_ptrace.h" |
c906108c SS |
34 | #include <sys/user.h> |
35 | #include <sys/ioctl.h> | |
36 | #include <fcntl.h> | |
37 | #include <sys/procfs.h> | |
38 | ||
0280a90a AS |
39 | #ifdef HAVE_SYS_REG_H |
40 | #include <sys/reg.h> | |
41 | #endif | |
42 | ||
c906108c | 43 | #include <sys/file.h> |
53ce3c39 | 44 | #include <sys/stat.h> |
c906108c SS |
45 | |
46 | #include "floatformat.h" | |
47 | ||
025bb325 | 48 | /* Prototypes for supply_gregset etc. */ |
3e00823e | 49 | #include "gregset.h" |
7b8b6d6d AS |
50 | |
51 | /* Defines ps_err_e, struct ps_prochandle. */ | |
52 | #include "gdb_proc_service.h" | |
53 | ||
bcc0c096 SM |
54 | #include "inf-ptrace.h" |
55 | ||
7b8b6d6d AS |
56 | #ifndef PTRACE_GET_THREAD_AREA |
57 | #define PTRACE_GET_THREAD_AREA 25 | |
58 | #endif | |
c906108c | 59 | \f |
c9f4d572 | 60 | /* This table must line up with gdbarch_register_name in "m68k-tdep.c". */ |
c5aa993b | 61 | static const int regmap[] = |
c906108c SS |
62 | { |
63 | PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7, | |
64 | PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP, | |
65 | PT_SR, PT_PC, | |
66 | /* PT_FP0, ..., PT_FP7 */ | |
67 | 21, 24, 27, 30, 33, 36, 39, 42, | |
68 | /* PT_FPCR, PT_FPSR, PT_FPIAR */ | |
69 | 45, 46, 47 | |
70 | }; | |
71 | ||
0280a90a AS |
72 | /* Which ptrace request retrieves which registers? |
73 | These apply to the corresponding SET requests as well. */ | |
74 | #define NUM_GREGS (18) | |
75 | #define MAX_NUM_REGS (NUM_GREGS + 11) | |
76 | ||
0c13fc49 | 77 | static int |
0280a90a AS |
78 | getregs_supplies (int regno) |
79 | { | |
80 | return 0 <= regno && regno < NUM_GREGS; | |
81 | } | |
82 | ||
0c13fc49 | 83 | static int |
0280a90a AS |
84 | getfpregs_supplies (int regno) |
85 | { | |
4ed226fe | 86 | return M68K_FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM; |
0280a90a AS |
87 | } |
88 | ||
89 | /* Does the current host support the GETREGS request? */ | |
0c13fc49 | 90 | static int have_ptrace_getregs = |
0280a90a AS |
91 | #ifdef HAVE_PTRACE_GETREGS |
92 | 1 | |
93 | #else | |
94 | 0 | |
95 | #endif | |
96 | ; | |
97 | ||
98 | \f | |
99 | ||
0280a90a AS |
100 | /* Fetching registers directly from the U area, one at a time. */ |
101 | ||
0280a90a AS |
102 | /* Fetch one register. */ |
103 | ||
104 | static void | |
56be3814 | 105 | fetch_register (struct regcache *regcache, int regno) |
0280a90a | 106 | { |
c984b7ff | 107 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
89e028e2 | 108 | long regaddr, val; |
52f0bd74 | 109 | int i; |
975c21ab | 110 | gdb_byte buf[M68K_MAX_REGISTER_SIZE]; |
bcc0c096 | 111 | pid_t tid = get_ptrace_pid (regcache_get_ptid (regcache)); |
0280a90a | 112 | |
de732108 | 113 | regaddr = 4 * regmap[regno]; |
335d71d6 | 114 | for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long)) |
0280a90a AS |
115 | { |
116 | errno = 0; | |
89e028e2 AS |
117 | val = ptrace (PTRACE_PEEKUSER, tid, regaddr, 0); |
118 | memcpy (&buf[i], &val, sizeof (long)); | |
335d71d6 | 119 | regaddr += sizeof (long); |
0280a90a | 120 | if (errno != 0) |
335d71d6 AS |
121 | error (_("Couldn't read register %s (#%d): %s."), |
122 | gdbarch_register_name (gdbarch, regno), | |
123 | regno, safe_strerror (errno)); | |
0280a90a | 124 | } |
56be3814 | 125 | regcache_raw_supply (regcache, regno, buf); |
0280a90a AS |
126 | } |
127 | ||
128 | /* Fetch register values from the inferior. | |
129 | If REGNO is negative, do this for all registers. | |
025bb325 | 130 | Otherwise, REGNO specifies which register (so we can save time). */ |
c906108c | 131 | |
10d6c8cd | 132 | static void |
56be3814 | 133 | old_fetch_inferior_registers (struct regcache *regcache, int regno) |
0280a90a AS |
134 | { |
135 | if (regno >= 0) | |
136 | { | |
56be3814 | 137 | fetch_register (regcache, regno); |
0280a90a AS |
138 | } |
139 | else | |
140 | { | |
c984b7ff UW |
141 | for (regno = 0; |
142 | regno < gdbarch_num_regs (get_regcache_arch (regcache)); | |
143 | regno++) | |
0280a90a | 144 | { |
56be3814 | 145 | fetch_register (regcache, regno); |
0280a90a AS |
146 | } |
147 | } | |
148 | } | |
149 | ||
025bb325 | 150 | /* Store one register. */ |
0280a90a AS |
151 | |
152 | static void | |
56be3814 | 153 | store_register (const struct regcache *regcache, int regno) |
0280a90a | 154 | { |
f36bf22c | 155 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
89e028e2 | 156 | long regaddr, val; |
52f0bd74 | 157 | int i; |
975c21ab | 158 | gdb_byte buf[M68K_MAX_REGISTER_SIZE]; |
bcc0c096 | 159 | pid_t tid = get_ptrace_pid (regcache_get_ptid (regcache)); |
0280a90a | 160 | |
de732108 | 161 | regaddr = 4 * regmap[regno]; |
9852326a | 162 | |
025bb325 | 163 | /* Put the contents of regno into a local buffer. */ |
56be3814 | 164 | regcache_raw_collect (regcache, regno, buf); |
9852326a | 165 | |
025bb325 | 166 | /* Store the local buffer into the inferior a chunk at the time. */ |
335d71d6 | 167 | for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long)) |
0280a90a AS |
168 | { |
169 | errno = 0; | |
89e028e2 AS |
170 | memcpy (&val, &buf[i], sizeof (long)); |
171 | ptrace (PTRACE_POKEUSER, tid, regaddr, val); | |
335d71d6 | 172 | regaddr += sizeof (long); |
0280a90a | 173 | if (errno != 0) |
335d71d6 AS |
174 | error (_("Couldn't write register %s (#%d): %s."), |
175 | gdbarch_register_name (gdbarch, regno), | |
176 | regno, safe_strerror (errno)); | |
0280a90a AS |
177 | } |
178 | } | |
179 | ||
180 | /* Store our register values back into the inferior. | |
181 | If REGNO is negative, do this for all registers. | |
182 | Otherwise, REGNO specifies which register (so we can save time). */ | |
183 | ||
10d6c8cd | 184 | static void |
56be3814 | 185 | old_store_inferior_registers (const struct regcache *regcache, int regno) |
0280a90a AS |
186 | { |
187 | if (regno >= 0) | |
188 | { | |
56be3814 | 189 | store_register (regcache, regno); |
0280a90a AS |
190 | } |
191 | else | |
192 | { | |
c984b7ff UW |
193 | for (regno = 0; |
194 | regno < gdbarch_num_regs (get_regcache_arch (regcache)); | |
195 | regno++) | |
0280a90a | 196 | { |
56be3814 | 197 | store_register (regcache, regno); |
0280a90a AS |
198 | } |
199 | } | |
200 | } | |
201 | \f | |
f175af98 DJ |
202 | /* Given a pointer to a general register set in /proc format |
203 | (elf_gregset_t *), unpack the register contents and supply | |
025bb325 | 204 | them as gdb's idea of the current register values. */ |
c906108c | 205 | |
c906108c | 206 | void |
7f7fe91e | 207 | supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp) |
c906108c | 208 | { |
c984b7ff | 209 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
7f7fe91e | 210 | const elf_greg_t *regp = (const elf_greg_t *) gregsetp; |
c906108c SS |
211 | int regi; |
212 | ||
3e8c568d | 213 | for (regi = M68K_D0_REGNUM; |
c984b7ff | 214 | regi <= gdbarch_sp_regnum (gdbarch); |
3e8c568d | 215 | regi++) |
7f7fe91e | 216 | regcache_raw_supply (regcache, regi, ®p[regmap[regi]]); |
c984b7ff | 217 | regcache_raw_supply (regcache, gdbarch_ps_regnum (gdbarch), |
3e8c568d UW |
218 | ®p[PT_SR]); |
219 | regcache_raw_supply (regcache, | |
c984b7ff | 220 | gdbarch_pc_regnum (gdbarch), ®p[PT_PC]); |
0280a90a AS |
221 | } |
222 | ||
223 | /* Fill register REGNO (if it is a general-purpose register) in | |
224 | *GREGSETPS with the value in GDB's register array. If REGNO is -1, | |
225 | do this for all registers. */ | |
226 | void | |
7f7fe91e UW |
227 | fill_gregset (const struct regcache *regcache, |
228 | elf_gregset_t *gregsetp, int regno) | |
0280a90a AS |
229 | { |
230 | elf_greg_t *regp = (elf_greg_t *) gregsetp; | |
231 | int i; | |
232 | ||
233 | for (i = 0; i < NUM_GREGS; i++) | |
8de307e0 | 234 | if (regno == -1 || regno == i) |
7f7fe91e | 235 | regcache_raw_collect (regcache, i, regp + regmap[i]); |
0280a90a AS |
236 | } |
237 | ||
238 | #ifdef HAVE_PTRACE_GETREGS | |
239 | ||
240 | /* Fetch all general-purpose registers from process/thread TID and | |
241 | store their values in GDB's register array. */ | |
242 | ||
243 | static void | |
56be3814 | 244 | fetch_regs (struct regcache *regcache, int tid) |
0280a90a AS |
245 | { |
246 | elf_gregset_t regs; | |
247 | ||
248 | if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0) | |
249 | { | |
250 | if (errno == EIO) | |
251 | { | |
252 | /* The kernel we're running on doesn't support the GETREGS | |
253 | request. Reset `have_ptrace_getregs'. */ | |
254 | have_ptrace_getregs = 0; | |
255 | return; | |
256 | } | |
257 | ||
e2e0b3e5 | 258 | perror_with_name (_("Couldn't get registers")); |
0280a90a AS |
259 | } |
260 | ||
56be3814 | 261 | supply_gregset (regcache, (const elf_gregset_t *) ®s); |
c906108c SS |
262 | } |
263 | ||
0280a90a AS |
264 | /* Store all valid general-purpose registers in GDB's register array |
265 | into the process/thread specified by TID. */ | |
266 | ||
267 | static void | |
56be3814 | 268 | store_regs (const struct regcache *regcache, int tid, int regno) |
0280a90a AS |
269 | { |
270 | elf_gregset_t regs; | |
271 | ||
272 | if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0) | |
e2e0b3e5 | 273 | perror_with_name (_("Couldn't get registers")); |
0280a90a | 274 | |
56be3814 | 275 | fill_gregset (regcache, ®s, regno); |
0280a90a AS |
276 | |
277 | if (ptrace (PTRACE_SETREGS, tid, 0, (int) ®s) < 0) | |
e2e0b3e5 | 278 | perror_with_name (_("Couldn't write registers")); |
0280a90a AS |
279 | } |
280 | ||
281 | #else | |
282 | ||
025bb325 MS |
283 | static void fetch_regs (struct regcache *regcache, int tid) |
284 | { | |
285 | } | |
286 | ||
287 | static void store_regs (const struct regcache *regcache, int tid, int regno) | |
288 | { | |
289 | } | |
0280a90a AS |
290 | |
291 | #endif | |
292 | ||
293 | \f | |
294 | /* Transfering floating-point registers between GDB, inferiors and cores. */ | |
295 | ||
296 | /* What is the address of fpN within the floating-point register set F? */ | |
7f7fe91e | 297 | #define FPREG_ADDR(f, n) (&(f)->fpregs[(n) * 3]) |
0280a90a AS |
298 | |
299 | /* Fill GDB's register array with the floating-point register values in | |
300 | *FPREGSETP. */ | |
c906108c | 301 | |
c5aa993b | 302 | void |
7f7fe91e | 303 | supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp) |
c906108c | 304 | { |
c984b7ff | 305 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
c906108c SS |
306 | int regi; |
307 | ||
c984b7ff UW |
308 | for (regi = gdbarch_fp0_regnum (gdbarch); |
309 | regi < gdbarch_fp0_regnum (gdbarch) + 8; regi++) | |
7f7fe91e | 310 | regcache_raw_supply (regcache, regi, |
3e8c568d | 311 | FPREG_ADDR (fpregsetp, |
c984b7ff | 312 | regi - gdbarch_fp0_regnum (gdbarch))); |
7f7fe91e UW |
313 | regcache_raw_supply (regcache, M68K_FPC_REGNUM, &fpregsetp->fpcntl[0]); |
314 | regcache_raw_supply (regcache, M68K_FPS_REGNUM, &fpregsetp->fpcntl[1]); | |
315 | regcache_raw_supply (regcache, M68K_FPI_REGNUM, &fpregsetp->fpcntl[2]); | |
c906108c SS |
316 | } |
317 | ||
0280a90a AS |
318 | /* Fill register REGNO (if it is a floating-point register) in |
319 | *FPREGSETP with the value in GDB's register array. If REGNO is -1, | |
320 | do this for all registers. */ | |
321 | ||
322 | void | |
7f7fe91e UW |
323 | fill_fpregset (const struct regcache *regcache, |
324 | elf_fpregset_t *fpregsetp, int regno) | |
0280a90a | 325 | { |
c984b7ff | 326 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
0280a90a AS |
327 | int i; |
328 | ||
329 | /* Fill in the floating-point registers. */ | |
c984b7ff UW |
330 | for (i = gdbarch_fp0_regnum (gdbarch); |
331 | i < gdbarch_fp0_regnum (gdbarch) + 8; i++) | |
0280a90a | 332 | if (regno == -1 || regno == i) |
7f7fe91e | 333 | regcache_raw_collect (regcache, i, |
3e8c568d | 334 | FPREG_ADDR (fpregsetp, |
c984b7ff | 335 | i - gdbarch_fp0_regnum (gdbarch))); |
0280a90a AS |
336 | |
337 | /* Fill in the floating-point control registers. */ | |
32eeb91a | 338 | for (i = M68K_FPC_REGNUM; i <= M68K_FPI_REGNUM; i++) |
0280a90a | 339 | if (regno == -1 || regno == i) |
7f7fe91e UW |
340 | regcache_raw_collect (regcache, i, |
341 | &fpregsetp->fpcntl[i - M68K_FPC_REGNUM]); | |
0280a90a AS |
342 | } |
343 | ||
344 | #ifdef HAVE_PTRACE_GETREGS | |
345 | ||
346 | /* Fetch all floating-point registers from process/thread TID and store | |
347 | thier values in GDB's register array. */ | |
348 | ||
349 | static void | |
56be3814 | 350 | fetch_fpregs (struct regcache *regcache, int tid) |
0280a90a AS |
351 | { |
352 | elf_fpregset_t fpregs; | |
353 | ||
354 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 355 | perror_with_name (_("Couldn't get floating point status")); |
0280a90a | 356 | |
56be3814 | 357 | supply_fpregset (regcache, (const elf_fpregset_t *) &fpregs); |
0280a90a AS |
358 | } |
359 | ||
360 | /* Store all valid floating-point registers in GDB's register array | |
361 | into the process/thread specified by TID. */ | |
362 | ||
363 | static void | |
56be3814 | 364 | store_fpregs (const struct regcache *regcache, int tid, int regno) |
0280a90a AS |
365 | { |
366 | elf_fpregset_t fpregs; | |
367 | ||
368 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 369 | perror_with_name (_("Couldn't get floating point status")); |
0280a90a | 370 | |
56be3814 | 371 | fill_fpregset (regcache, &fpregs, regno); |
0280a90a AS |
372 | |
373 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (int) &fpregs) < 0) | |
e2e0b3e5 | 374 | perror_with_name (_("Couldn't write floating point status")); |
0280a90a AS |
375 | } |
376 | ||
377 | #else | |
378 | ||
025bb325 MS |
379 | static void fetch_fpregs (struct regcache *regcache, int tid) |
380 | { | |
381 | } | |
382 | ||
383 | static void store_fpregs (const struct regcache *regcache, int tid, int regno) | |
384 | { | |
385 | } | |
0280a90a | 386 | |
c906108c | 387 | #endif |
0280a90a AS |
388 | \f |
389 | /* Transferring arbitrary registers between GDB and inferior. */ | |
390 | ||
391 | /* Fetch register REGNO from the child process. If REGNO is -1, do | |
392 | this for all registers (including the floating point and SSE | |
393 | registers). */ | |
394 | ||
10d6c8cd | 395 | static void |
28439f5e PA |
396 | m68k_linux_fetch_inferior_registers (struct target_ops *ops, |
397 | struct regcache *regcache, int regno) | |
0280a90a | 398 | { |
bcc0c096 | 399 | pid_t tid; |
0280a90a AS |
400 | |
401 | /* Use the old method of peeking around in `struct user' if the | |
402 | GETREGS request isn't available. */ | |
403 | if (! have_ptrace_getregs) | |
404 | { | |
56be3814 | 405 | old_fetch_inferior_registers (regcache, regno); |
0280a90a AS |
406 | return; |
407 | } | |
408 | ||
bcc0c096 | 409 | tid = get_ptrace_pid (regcache_get_ptid (regcache)); |
f175af98 | 410 | |
0280a90a AS |
411 | /* Use the PTRACE_GETFPXREGS request whenever possible, since it |
412 | transfers more registers in one system call, and we'll cache the | |
413 | results. But remember that fetch_fpxregs can fail, and return | |
414 | zero. */ | |
415 | if (regno == -1) | |
416 | { | |
56be3814 | 417 | fetch_regs (regcache, tid); |
0280a90a AS |
418 | |
419 | /* The call above might reset `have_ptrace_getregs'. */ | |
420 | if (! have_ptrace_getregs) | |
421 | { | |
56be3814 | 422 | old_fetch_inferior_registers (regcache, -1); |
0280a90a AS |
423 | return; |
424 | } | |
425 | ||
56be3814 | 426 | fetch_fpregs (regcache, tid); |
0280a90a AS |
427 | return; |
428 | } | |
429 | ||
430 | if (getregs_supplies (regno)) | |
431 | { | |
56be3814 | 432 | fetch_regs (regcache, tid); |
0280a90a AS |
433 | return; |
434 | } | |
435 | ||
436 | if (getfpregs_supplies (regno)) | |
437 | { | |
56be3814 | 438 | fetch_fpregs (regcache, tid); |
0280a90a AS |
439 | return; |
440 | } | |
441 | ||
442 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 443 | _("Got request for bad register number %d."), regno); |
0280a90a AS |
444 | } |
445 | ||
446 | /* Store register REGNO back into the child process. If REGNO is -1, | |
447 | do this for all registers (including the floating point and SSE | |
448 | registers). */ | |
10d6c8cd | 449 | static void |
28439f5e PA |
450 | m68k_linux_store_inferior_registers (struct target_ops *ops, |
451 | struct regcache *regcache, int regno) | |
0280a90a | 452 | { |
bcc0c096 | 453 | pid_t tid; |
0280a90a AS |
454 | |
455 | /* Use the old method of poking around in `struct user' if the | |
456 | SETREGS request isn't available. */ | |
457 | if (! have_ptrace_getregs) | |
458 | { | |
56be3814 | 459 | old_store_inferior_registers (regcache, regno); |
0280a90a AS |
460 | return; |
461 | } | |
462 | ||
bcc0c096 | 463 | tid = get_ptrace_pid (regcache_get_ptid (regcache)); |
0280a90a AS |
464 | |
465 | /* Use the PTRACE_SETFPREGS requests whenever possible, since it | |
466 | transfers more registers in one system call. But remember that | |
467 | store_fpregs can fail, and return zero. */ | |
468 | if (regno == -1) | |
469 | { | |
56be3814 UW |
470 | store_regs (regcache, tid, regno); |
471 | store_fpregs (regcache, tid, regno); | |
0280a90a AS |
472 | return; |
473 | } | |
474 | ||
475 | if (getregs_supplies (regno)) | |
476 | { | |
56be3814 | 477 | store_regs (regcache, tid, regno); |
0280a90a AS |
478 | return; |
479 | } | |
480 | ||
481 | if (getfpregs_supplies (regno)) | |
482 | { | |
56be3814 | 483 | store_fpregs (regcache, tid, regno); |
0280a90a AS |
484 | return; |
485 | } | |
486 | ||
487 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 488 | _("Got request to store bad register number %d."), regno); |
0280a90a | 489 | } |
f175af98 | 490 | \f |
c5aa993b | 491 | |
7b8b6d6d AS |
492 | /* Fetch the thread-local storage pointer for libthread_db. */ |
493 | ||
494 | ps_err_e | |
754653a7 | 495 | ps_get_thread_area (struct ps_prochandle *ph, |
7b8b6d6d AS |
496 | lwpid_t lwpid, int idx, void **base) |
497 | { | |
498 | if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) < 0) | |
499 | return PS_ERR; | |
500 | ||
501 | /* IDX is the bias from the thread pointer to the beginning of the | |
502 | thread descriptor. It has to be subtracted due to implementation | |
503 | quirks in libthread_db. */ | |
504 | *base = (char *) *base - idx; | |
505 | ||
506 | return PS_OK; | |
507 | } | |
10d6c8cd | 508 | |
f175af98 | 509 | void |
5ae5f592 | 510 | _initialize_m68k_linux_nat (void) |
f175af98 | 511 | { |
10d6c8cd DJ |
512 | struct target_ops *t; |
513 | ||
514 | /* Fill in the generic GNU/Linux methods. */ | |
515 | t = linux_target (); | |
516 | ||
517 | /* Add our register access methods. */ | |
518 | t->to_fetch_registers = m68k_linux_fetch_inferior_registers; | |
519 | t->to_store_registers = m68k_linux_store_inferior_registers; | |
520 | ||
521 | /* Register the target. */ | |
f973ed9c | 522 | linux_nat_add_target (t); |
f175af98 | 523 | } |