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ed9a39eb | 1 | /* GNU/Linux on ARM native support. |
4e052eda | 2 | Copyright 1999, 2000, 2001 Free Software Foundation, Inc. |
ed9a39eb JM |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "inferior.h" | |
23 | #include "gdbcore.h" | |
24 | #include "gdb_string.h" | |
4e052eda | 25 | #include "regcache.h" |
ed9a39eb JM |
26 | |
27 | #include <sys/user.h> | |
28 | #include <sys/ptrace.h> | |
29 | #include <sys/utsname.h> | |
41c49b06 | 30 | #include <sys/procfs.h> |
ed9a39eb | 31 | |
c60c0f5f MS |
32 | /* Prototypes for supply_gregset etc. */ |
33 | #include "gregset.h" | |
34 | ||
ed9a39eb JM |
35 | extern int arm_apcs_32; |
36 | ||
37 | #define typeNone 0x00 | |
38 | #define typeSingle 0x01 | |
39 | #define typeDouble 0x02 | |
40 | #define typeExtended 0x03 | |
41 | #define FPWORDS 28 | |
42 | #define CPSR_REGNUM 16 | |
43 | ||
44 | typedef union tagFPREG | |
45 | { | |
46 | unsigned int fSingle; | |
47 | unsigned int fDouble[2]; | |
48 | unsigned int fExtended[3]; | |
49 | } | |
50 | FPREG; | |
51 | ||
52 | typedef struct tagFPA11 | |
53 | { | |
54 | FPREG fpreg[8]; /* 8 floating point registers */ | |
55 | unsigned int fpsr; /* floating point status register */ | |
56 | unsigned int fpcr; /* floating point control register */ | |
57 | unsigned char fType[8]; /* type of floating point value held in | |
58 | floating point registers. */ | |
59 | int initflag; /* NWFPE initialization flag. */ | |
60 | } | |
61 | FPA11; | |
62 | ||
63 | /* The following variables are used to determine the version of the | |
64 | underlying Linux operating system. Examples: | |
65 | ||
66 | Linux 2.0.35 Linux 2.2.12 | |
67 | os_version = 0x00020023 os_version = 0x0002020c | |
68 | os_major = 2 os_major = 2 | |
69 | os_minor = 0 os_minor = 2 | |
70 | os_release = 35 os_release = 12 | |
71 | ||
72 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release | |
73 | ||
74 | These are initialized using get_linux_version() from | |
75 | _initialize_arm_linux_nat(). */ | |
76 | ||
77 | static unsigned int os_version, os_major, os_minor, os_release; | |
78 | ||
41c49b06 SB |
79 | /* On Linux, threads are implemented as pseudo-processes, in which |
80 | case we may be tracing more than one process at a time. In that | |
81 | case, inferior_pid will contain the main process ID and the | |
82 | individual thread (process) ID mashed together. These macros are | |
83 | used to separate them out. These definitions should be overridden | |
84 | if thread support is included. */ | |
85 | ||
86 | #if !defined (PIDGET) /* Default definition for PIDGET/TIDGET. */ | |
87 | #define PIDGET(PID) PID | |
88 | #define TIDGET(PID) 0 | |
89 | #endif | |
90 | ||
91 | int | |
92 | get_thread_id (int inferior_pid) | |
93 | { | |
94 | int tid = TIDGET (inferior_pid); | |
95 | if (0 == tid) tid = inferior_pid; | |
96 | return tid; | |
97 | } | |
98 | #define GET_THREAD_ID(PID) get_thread_id ((PID)); | |
99 | ||
ed9a39eb | 100 | static void |
56624b0a | 101 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
102 | { |
103 | unsigned int mem[3]; | |
104 | ||
105 | mem[0] = fpa11->fpreg[fn].fSingle; | |
106 | mem[1] = 0; | |
107 | mem[2] = 0; | |
108 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
109 | } | |
110 | ||
111 | static void | |
56624b0a | 112 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
113 | { |
114 | unsigned int mem[3]; | |
115 | ||
116 | mem[0] = fpa11->fpreg[fn].fDouble[1]; | |
117 | mem[1] = fpa11->fpreg[fn].fDouble[0]; | |
118 | mem[2] = 0; | |
119 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
120 | } | |
121 | ||
122 | static void | |
56624b0a | 123 | fetch_nwfpe_none (unsigned int fn) |
ed9a39eb JM |
124 | { |
125 | unsigned int mem[3] = | |
126 | {0, 0, 0}; | |
127 | ||
128 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
129 | } | |
130 | ||
131 | static void | |
56624b0a | 132 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
133 | { |
134 | unsigned int mem[3]; | |
135 | ||
136 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ | |
137 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ | |
138 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ | |
139 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
140 | } | |
141 | ||
41c49b06 SB |
142 | static void |
143 | fetch_nwfpe_register (int regno, FPA11 * fpa11) | |
144 | { | |
145 | int fn = regno - F0_REGNUM; | |
146 | ||
147 | switch (fpa11->fType[fn]) | |
148 | { | |
149 | case typeSingle: | |
150 | fetch_nwfpe_single (fn, fpa11); | |
151 | break; | |
152 | ||
153 | case typeDouble: | |
154 | fetch_nwfpe_double (fn, fpa11); | |
155 | break; | |
156 | ||
157 | case typeExtended: | |
158 | fetch_nwfpe_extended (fn, fpa11); | |
159 | break; | |
160 | ||
161 | default: | |
162 | fetch_nwfpe_none (fn); | |
163 | } | |
164 | } | |
165 | ||
ed9a39eb | 166 | static void |
56624b0a | 167 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
168 | { |
169 | unsigned int mem[3]; | |
170 | ||
171 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
172 | fpa11->fpreg[fn].fSingle = mem[0]; | |
173 | fpa11->fType[fn] = typeSingle; | |
174 | } | |
175 | ||
176 | static void | |
56624b0a | 177 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
178 | { |
179 | unsigned int mem[3]; | |
180 | ||
181 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
182 | fpa11->fpreg[fn].fDouble[1] = mem[0]; | |
183 | fpa11->fpreg[fn].fDouble[0] = mem[1]; | |
184 | fpa11->fType[fn] = typeDouble; | |
185 | } | |
186 | ||
187 | void | |
56624b0a | 188 | store_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
189 | { |
190 | unsigned int mem[3]; | |
191 | ||
192 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
193 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ | |
194 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ | |
195 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ | |
196 | fpa11->fType[fn] = typeDouble; | |
197 | } | |
198 | ||
41c49b06 SB |
199 | void |
200 | store_nwfpe_register (int regno, FPA11 * fpa11) | |
201 | { | |
202 | if (register_valid[regno]) | |
203 | { | |
204 | unsigned int fn = regno - F0_REGNUM; | |
205 | switch (fpa11->fType[fn]) | |
206 | { | |
207 | case typeSingle: | |
208 | store_nwfpe_single (fn, fpa11); | |
209 | break; | |
210 | ||
211 | case typeDouble: | |
212 | store_nwfpe_double (fn, fpa11); | |
213 | break; | |
214 | ||
215 | case typeExtended: | |
216 | store_nwfpe_extended (fn, fpa11); | |
217 | break; | |
218 | } | |
219 | } | |
220 | } | |
221 | ||
222 | ||
223 | /* Get the value of a particular register from the floating point | |
224 | state of the process and store it into registers[]. */ | |
225 | ||
226 | static void | |
227 | fetch_fpregister (int regno) | |
228 | { | |
229 | int ret, tid; | |
230 | FPA11 fp; | |
231 | ||
232 | /* Get the thread id for the ptrace call. */ | |
233 | tid = GET_THREAD_ID (inferior_pid); | |
234 | ||
235 | /* Read the floating point state. */ | |
236 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
237 | if (ret < 0) | |
238 | { | |
239 | warning ("Unable to fetch floating point register."); | |
240 | return; | |
241 | } | |
242 | ||
243 | /* Fetch fpsr. */ | |
244 | if (FPS_REGNUM == regno) | |
245 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
246 | ||
247 | /* Fetch the floating point register. */ | |
248 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
249 | { | |
250 | int fn = regno - F0_REGNUM; | |
251 | ||
252 | switch (fp.fType[fn]) | |
253 | { | |
254 | case typeSingle: | |
255 | fetch_nwfpe_single (fn, &fp); | |
256 | break; | |
257 | ||
258 | case typeDouble: | |
259 | fetch_nwfpe_double (fn, &fp); | |
260 | break; | |
261 | ||
262 | case typeExtended: | |
263 | fetch_nwfpe_extended (fn, &fp); | |
264 | break; | |
265 | ||
266 | default: | |
267 | fetch_nwfpe_none (fn); | |
268 | } | |
269 | } | |
270 | } | |
271 | ||
272 | /* Get the whole floating point state of the process and store it | |
273 | into registers[]. */ | |
ed9a39eb JM |
274 | |
275 | static void | |
276 | fetch_fpregs (void) | |
277 | { | |
41c49b06 | 278 | int ret, regno, tid; |
ed9a39eb JM |
279 | FPA11 fp; |
280 | ||
41c49b06 SB |
281 | /* Get the thread id for the ptrace call. */ |
282 | tid = GET_THREAD_ID (inferior_pid); | |
283 | ||
ed9a39eb | 284 | /* Read the floating point state. */ |
41c49b06 | 285 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
286 | if (ret < 0) |
287 | { | |
41c49b06 | 288 | warning ("Unable to fetch the floating point registers."); |
ed9a39eb JM |
289 | return; |
290 | } | |
291 | ||
292 | /* Fetch fpsr. */ | |
293 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
294 | ||
295 | /* Fetch the floating point registers. */ | |
296 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
297 | { | |
298 | int fn = regno - F0_REGNUM; | |
ed9a39eb JM |
299 | |
300 | switch (fp.fType[fn]) | |
301 | { | |
302 | case typeSingle: | |
56624b0a | 303 | fetch_nwfpe_single (fn, &fp); |
ed9a39eb JM |
304 | break; |
305 | ||
306 | case typeDouble: | |
56624b0a | 307 | fetch_nwfpe_double (fn, &fp); |
ed9a39eb JM |
308 | break; |
309 | ||
310 | case typeExtended: | |
56624b0a | 311 | fetch_nwfpe_extended (fn, &fp); |
ed9a39eb JM |
312 | break; |
313 | ||
314 | default: | |
56624b0a | 315 | fetch_nwfpe_none (fn); |
ed9a39eb JM |
316 | } |
317 | } | |
318 | } | |
319 | ||
41c49b06 SB |
320 | /* Save a particular register into the floating point state of the |
321 | process using the contents from registers[]. */ | |
322 | ||
323 | static void | |
324 | store_fpregister (int regno) | |
325 | { | |
326 | int ret, tid; | |
327 | FPA11 fp; | |
328 | ||
329 | /* Get the thread id for the ptrace call. */ | |
330 | tid = GET_THREAD_ID (inferior_pid); | |
331 | ||
332 | /* Read the floating point state. */ | |
333 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
334 | if (ret < 0) | |
335 | { | |
336 | warning ("Unable to fetch the floating point registers."); | |
337 | return; | |
338 | } | |
339 | ||
340 | /* Store fpsr. */ | |
341 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) | |
342 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
343 | ||
344 | /* Store the floating point register. */ | |
345 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
346 | { | |
347 | store_nwfpe_register (regno, &fp); | |
348 | } | |
349 | ||
350 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); | |
351 | if (ret < 0) | |
352 | { | |
353 | warning ("Unable to store floating point register."); | |
354 | return; | |
355 | } | |
356 | } | |
357 | ||
ed9a39eb JM |
358 | /* Save the whole floating point state of the process using |
359 | the contents from registers[]. */ | |
360 | ||
361 | static void | |
362 | store_fpregs (void) | |
363 | { | |
41c49b06 | 364 | int ret, regno, tid; |
ed9a39eb JM |
365 | FPA11 fp; |
366 | ||
41c49b06 SB |
367 | /* Get the thread id for the ptrace call. */ |
368 | tid = GET_THREAD_ID (inferior_pid); | |
369 | ||
370 | /* Read the floating point state. */ | |
371 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
372 | if (ret < 0) | |
373 | { | |
374 | warning ("Unable to fetch the floating point registers."); | |
375 | return; | |
376 | } | |
377 | ||
ed9a39eb JM |
378 | /* Store fpsr. */ |
379 | if (register_valid[FPS_REGNUM]) | |
380 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
381 | ||
382 | /* Store the floating point registers. */ | |
383 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
384 | { | |
41c49b06 | 385 | fetch_nwfpe_register (regno, &fp); |
ed9a39eb JM |
386 | } |
387 | ||
41c49b06 | 388 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
389 | if (ret < 0) |
390 | { | |
41c49b06 | 391 | warning ("Unable to store floating point registers."); |
ed9a39eb JM |
392 | return; |
393 | } | |
394 | } | |
395 | ||
41c49b06 SB |
396 | /* Fetch a general register of the process and store into |
397 | registers[]. */ | |
398 | ||
399 | static void | |
400 | fetch_register (int regno) | |
401 | { | |
402 | int ret, tid; | |
403 | struct pt_regs regs; | |
404 | ||
405 | /* Get the thread id for the ptrace call. */ | |
406 | tid = GET_THREAD_ID (inferior_pid); | |
407 | ||
408 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
409 | if (ret < 0) | |
410 | { | |
411 | warning ("Unable to fetch general register."); | |
412 | return; | |
413 | } | |
414 | ||
415 | if (regno >= A1_REGNUM && regno < PC_REGNUM) | |
416 | supply_register (regno, (char *) ®s.uregs[regno]); | |
417 | ||
418 | if (PS_REGNUM == regno) | |
419 | { | |
420 | if (arm_apcs_32) | |
421 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
422 | else | |
423 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
424 | } | |
425 | ||
426 | if (PC_REGNUM == regno) | |
427 | { | |
428 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
429 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
430 | } | |
431 | } | |
432 | ||
ed9a39eb JM |
433 | /* Fetch all general registers of the process and store into |
434 | registers[]. */ | |
435 | ||
436 | static void | |
437 | fetch_regs (void) | |
438 | { | |
41c49b06 | 439 | int ret, regno, tid; |
ed9a39eb JM |
440 | struct pt_regs regs; |
441 | ||
41c49b06 SB |
442 | /* Get the thread id for the ptrace call. */ |
443 | tid = GET_THREAD_ID (inferior_pid); | |
444 | ||
445 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
446 | if (ret < 0) |
447 | { | |
448 | warning ("Unable to fetch general registers."); | |
449 | return; | |
450 | } | |
451 | ||
452 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
453 | supply_register (regno, (char *) ®s.uregs[regno]); | |
454 | ||
455 | if (arm_apcs_32) | |
456 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
457 | else | |
458 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
459 | ||
460 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
461 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
462 | } | |
463 | ||
464 | /* Store all general registers of the process from the values in | |
465 | registers[]. */ | |
466 | ||
41c49b06 SB |
467 | static void |
468 | store_register (int regno) | |
469 | { | |
470 | int ret, tid; | |
471 | struct pt_regs regs; | |
472 | ||
473 | if (!register_valid[regno]) | |
474 | return; | |
475 | ||
476 | /* Get the thread id for the ptrace call. */ | |
477 | tid = GET_THREAD_ID (inferior_pid); | |
478 | ||
479 | /* Get the general registers from the process. */ | |
480 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
481 | if (ret < 0) | |
482 | { | |
483 | warning ("Unable to fetch general registers."); | |
484 | return; | |
485 | } | |
486 | ||
487 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
488 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
489 | ||
490 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
491 | if (ret < 0) | |
492 | { | |
493 | warning ("Unable to store general register."); | |
494 | return; | |
495 | } | |
496 | } | |
497 | ||
ed9a39eb JM |
498 | static void |
499 | store_regs (void) | |
500 | { | |
41c49b06 | 501 | int ret, regno, tid; |
ed9a39eb JM |
502 | struct pt_regs regs; |
503 | ||
41c49b06 SB |
504 | /* Get the thread id for the ptrace call. */ |
505 | tid = GET_THREAD_ID (inferior_pid); | |
506 | ||
507 | /* Fetch the general registers. */ | |
508 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
509 | if (ret < 0) |
510 | { | |
511 | warning ("Unable to fetch general registers."); | |
512 | return; | |
513 | } | |
514 | ||
515 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) | |
516 | { | |
517 | if (register_valid[regno]) | |
518 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
519 | } | |
520 | ||
41c49b06 | 521 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
522 | |
523 | if (ret < 0) | |
524 | { | |
525 | warning ("Unable to store general registers."); | |
526 | return; | |
527 | } | |
528 | } | |
529 | ||
530 | /* Fetch registers from the child process. Fetch all registers if | |
531 | regno == -1, otherwise fetch all general registers or all floating | |
532 | point registers depending upon the value of regno. */ | |
533 | ||
534 | void | |
535 | fetch_inferior_registers (int regno) | |
536 | { | |
41c49b06 SB |
537 | if (-1 == regno) |
538 | { | |
539 | fetch_regs (); | |
540 | fetch_fpregs (); | |
541 | } | |
542 | else | |
543 | { | |
544 | if (regno < F0_REGNUM || regno > FPS_REGNUM) | |
545 | fetch_register (regno); | |
ed9a39eb | 546 | |
41c49b06 SB |
547 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
548 | fetch_fpregister (regno); | |
549 | } | |
ed9a39eb JM |
550 | } |
551 | ||
552 | /* Store registers back into the inferior. Store all registers if | |
553 | regno == -1, otherwise store all general registers or all floating | |
554 | point registers depending upon the value of regno. */ | |
555 | ||
556 | void | |
557 | store_inferior_registers (int regno) | |
558 | { | |
41c49b06 SB |
559 | if (-1 == regno) |
560 | { | |
561 | store_regs (); | |
562 | store_fpregs (); | |
563 | } | |
564 | else | |
565 | { | |
566 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) | |
567 | store_register (regno); | |
ed9a39eb | 568 | |
41c49b06 SB |
569 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
570 | store_fpregister (regno); | |
571 | } | |
ed9a39eb JM |
572 | } |
573 | ||
41c49b06 SB |
574 | /* Fill register regno (if it is a general-purpose register) in |
575 | *gregsetp with the appropriate value from GDB's register array. | |
576 | If regno is -1, do this for all registers. */ | |
577 | ||
578 | void | |
713f0374 | 579 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
41c49b06 SB |
580 | { |
581 | if (-1 == regno) | |
582 | { | |
583 | int regnum; | |
584 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) | |
585 | if (register_valid[regnum]) | |
586 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); | |
587 | } | |
588 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
589 | { | |
590 | if (register_valid[regno]) | |
591 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); | |
592 | } | |
593 | ||
594 | if (PS_REGNUM == regno || -1 == regno) | |
595 | { | |
596 | if (register_valid[regno] || -1 == regno) | |
597 | { | |
598 | if (arm_apcs_32) | |
599 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
600 | else | |
601 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
602 | } | |
603 | } | |
604 | ||
605 | } | |
606 | ||
607 | /* Fill GDB's register array with the general-purpose register values | |
608 | in *gregsetp. */ | |
609 | ||
610 | void | |
713f0374 | 611 | supply_gregset (gdb_gregset_t *gregsetp) |
41c49b06 SB |
612 | { |
613 | int regno, reg_pc; | |
614 | ||
615 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
616 | supply_register (regno, (char *) &(*gregsetp)[regno]); | |
617 | ||
618 | if (arm_apcs_32) | |
619 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
620 | else | |
621 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
622 | ||
623 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); | |
624 | supply_register (PC_REGNUM, (char *) ®_pc); | |
625 | } | |
626 | ||
627 | /* Fill register regno (if it is a floating-point register) in | |
628 | *fpregsetp with the appropriate value from GDB's register array. | |
629 | If regno is -1, do this for all registers. */ | |
630 | ||
631 | void | |
713f0374 | 632 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
41c49b06 SB |
633 | { |
634 | FPA11 *fp = (FPA11 *) fpregsetp; | |
635 | ||
636 | if (-1 == regno) | |
637 | { | |
638 | int regnum; | |
639 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) | |
640 | store_nwfpe_register (regnum, fp); | |
641 | } | |
642 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
643 | { | |
644 | store_nwfpe_register (regno, fp); | |
645 | return; | |
646 | } | |
647 | ||
648 | /* Store fpsr. */ | |
649 | if (register_valid[FPS_REGNUM]) | |
650 | if (FPS_REGNUM == regno || -1 == regno) | |
651 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); | |
652 | } | |
653 | ||
654 | /* Fill GDB's register array with the floating-point register values | |
655 | in *fpregsetp. */ | |
656 | ||
657 | void | |
713f0374 | 658 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
ed9a39eb | 659 | { |
41c49b06 SB |
660 | int regno; |
661 | FPA11 *fp = (FPA11 *) fpregsetp; | |
662 | ||
663 | /* Fetch fpsr. */ | |
664 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); | |
665 | ||
666 | /* Fetch the floating point registers. */ | |
667 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
668 | { | |
669 | fetch_nwfpe_register (regno, fp); | |
670 | } | |
ed9a39eb JM |
671 | } |
672 | ||
673 | int | |
674 | arm_linux_kernel_u_size (void) | |
675 | { | |
676 | return (sizeof (struct user)); | |
677 | } | |
678 | ||
ed9a39eb JM |
679 | static unsigned int |
680 | get_linux_version (unsigned int *vmajor, | |
681 | unsigned int *vminor, | |
682 | unsigned int *vrelease) | |
683 | { | |
684 | struct utsname info; | |
685 | char *pmajor, *pminor, *prelease, *tail; | |
686 | ||
687 | if (-1 == uname (&info)) | |
688 | { | |
689 | warning ("Unable to determine Linux version."); | |
690 | return -1; | |
691 | } | |
692 | ||
693 | pmajor = strtok (info.release, "."); | |
694 | pminor = strtok (NULL, "."); | |
695 | prelease = strtok (NULL, "."); | |
696 | ||
697 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
698 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
699 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
700 | ||
701 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
702 | } | |
703 | ||
704 | void | |
705 | _initialize_arm_linux_nat (void) | |
706 | { | |
707 | os_version = get_linux_version (&os_major, &os_minor, &os_release); | |
708 | } |