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ed9a39eb | 1 | /* GNU/Linux on ARM native support. |
ef57c069 | 2 | Copyright 1999, 2000 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" | |
25 | ||
26 | #include <sys/user.h> | |
27 | #include <sys/ptrace.h> | |
28 | #include <sys/utsname.h> | |
41c49b06 | 29 | #include <sys/procfs.h> |
ed9a39eb | 30 | |
c60c0f5f MS |
31 | /* Prototypes for supply_gregset etc. */ |
32 | #include "gregset.h" | |
33 | ||
ed9a39eb JM |
34 | extern int arm_apcs_32; |
35 | ||
36 | #define typeNone 0x00 | |
37 | #define typeSingle 0x01 | |
38 | #define typeDouble 0x02 | |
39 | #define typeExtended 0x03 | |
40 | #define FPWORDS 28 | |
41 | #define CPSR_REGNUM 16 | |
42 | ||
43 | typedef union tagFPREG | |
44 | { | |
45 | unsigned int fSingle; | |
46 | unsigned int fDouble[2]; | |
47 | unsigned int fExtended[3]; | |
48 | } | |
49 | FPREG; | |
50 | ||
51 | typedef struct tagFPA11 | |
52 | { | |
53 | FPREG fpreg[8]; /* 8 floating point registers */ | |
54 | unsigned int fpsr; /* floating point status register */ | |
55 | unsigned int fpcr; /* floating point control register */ | |
56 | unsigned char fType[8]; /* type of floating point value held in | |
57 | floating point registers. */ | |
58 | int initflag; /* NWFPE initialization flag. */ | |
59 | } | |
60 | FPA11; | |
61 | ||
62 | /* The following variables are used to determine the version of the | |
63 | underlying Linux operating system. Examples: | |
64 | ||
65 | Linux 2.0.35 Linux 2.2.12 | |
66 | os_version = 0x00020023 os_version = 0x0002020c | |
67 | os_major = 2 os_major = 2 | |
68 | os_minor = 0 os_minor = 2 | |
69 | os_release = 35 os_release = 12 | |
70 | ||
71 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release | |
72 | ||
73 | These are initialized using get_linux_version() from | |
74 | _initialize_arm_linux_nat(). */ | |
75 | ||
76 | static unsigned int os_version, os_major, os_minor, os_release; | |
77 | ||
41c49b06 SB |
78 | /* On Linux, threads are implemented as pseudo-processes, in which |
79 | case we may be tracing more than one process at a time. In that | |
80 | case, inferior_pid will contain the main process ID and the | |
81 | individual thread (process) ID mashed together. These macros are | |
82 | used to separate them out. These definitions should be overridden | |
83 | if thread support is included. */ | |
84 | ||
85 | #if !defined (PIDGET) /* Default definition for PIDGET/TIDGET. */ | |
86 | #define PIDGET(PID) PID | |
87 | #define TIDGET(PID) 0 | |
88 | #endif | |
89 | ||
90 | int | |
91 | get_thread_id (int inferior_pid) | |
92 | { | |
93 | int tid = TIDGET (inferior_pid); | |
94 | if (0 == tid) tid = inferior_pid; | |
95 | return tid; | |
96 | } | |
97 | #define GET_THREAD_ID(PID) get_thread_id ((PID)); | |
98 | ||
ed9a39eb | 99 | static void |
56624b0a | 100 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
101 | { |
102 | unsigned int mem[3]; | |
103 | ||
104 | mem[0] = fpa11->fpreg[fn].fSingle; | |
105 | mem[1] = 0; | |
106 | mem[2] = 0; | |
107 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
108 | } | |
109 | ||
110 | static void | |
56624b0a | 111 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
112 | { |
113 | unsigned int mem[3]; | |
114 | ||
115 | mem[0] = fpa11->fpreg[fn].fDouble[1]; | |
116 | mem[1] = fpa11->fpreg[fn].fDouble[0]; | |
117 | mem[2] = 0; | |
118 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
119 | } | |
120 | ||
121 | static void | |
56624b0a | 122 | fetch_nwfpe_none (unsigned int fn) |
ed9a39eb JM |
123 | { |
124 | unsigned int mem[3] = | |
125 | {0, 0, 0}; | |
126 | ||
127 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
128 | } | |
129 | ||
130 | static void | |
56624b0a | 131 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
132 | { |
133 | unsigned int mem[3]; | |
134 | ||
135 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ | |
136 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ | |
137 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ | |
138 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
139 | } | |
140 | ||
41c49b06 SB |
141 | static void |
142 | fetch_nwfpe_register (int regno, FPA11 * fpa11) | |
143 | { | |
144 | int fn = regno - F0_REGNUM; | |
145 | ||
146 | switch (fpa11->fType[fn]) | |
147 | { | |
148 | case typeSingle: | |
149 | fetch_nwfpe_single (fn, fpa11); | |
150 | break; | |
151 | ||
152 | case typeDouble: | |
153 | fetch_nwfpe_double (fn, fpa11); | |
154 | break; | |
155 | ||
156 | case typeExtended: | |
157 | fetch_nwfpe_extended (fn, fpa11); | |
158 | break; | |
159 | ||
160 | default: | |
161 | fetch_nwfpe_none (fn); | |
162 | } | |
163 | } | |
164 | ||
ed9a39eb | 165 | static void |
56624b0a | 166 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
167 | { |
168 | unsigned int mem[3]; | |
169 | ||
170 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
171 | fpa11->fpreg[fn].fSingle = mem[0]; | |
172 | fpa11->fType[fn] = typeSingle; | |
173 | } | |
174 | ||
175 | static void | |
56624b0a | 176 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
177 | { |
178 | unsigned int mem[3]; | |
179 | ||
180 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
181 | fpa11->fpreg[fn].fDouble[1] = mem[0]; | |
182 | fpa11->fpreg[fn].fDouble[0] = mem[1]; | |
183 | fpa11->fType[fn] = typeDouble; | |
184 | } | |
185 | ||
186 | void | |
56624b0a | 187 | store_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
188 | { |
189 | unsigned int mem[3]; | |
190 | ||
191 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
192 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ | |
193 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ | |
194 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ | |
195 | fpa11->fType[fn] = typeDouble; | |
196 | } | |
197 | ||
41c49b06 SB |
198 | void |
199 | store_nwfpe_register (int regno, FPA11 * fpa11) | |
200 | { | |
201 | if (register_valid[regno]) | |
202 | { | |
203 | unsigned int fn = regno - F0_REGNUM; | |
204 | switch (fpa11->fType[fn]) | |
205 | { | |
206 | case typeSingle: | |
207 | store_nwfpe_single (fn, fpa11); | |
208 | break; | |
209 | ||
210 | case typeDouble: | |
211 | store_nwfpe_double (fn, fpa11); | |
212 | break; | |
213 | ||
214 | case typeExtended: | |
215 | store_nwfpe_extended (fn, fpa11); | |
216 | break; | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | ||
222 | /* Get the value of a particular register from the floating point | |
223 | state of the process and store it into registers[]. */ | |
224 | ||
225 | static void | |
226 | fetch_fpregister (int regno) | |
227 | { | |
228 | int ret, tid; | |
229 | FPA11 fp; | |
230 | ||
231 | /* Get the thread id for the ptrace call. */ | |
232 | tid = GET_THREAD_ID (inferior_pid); | |
233 | ||
234 | /* Read the floating point state. */ | |
235 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
236 | if (ret < 0) | |
237 | { | |
238 | warning ("Unable to fetch floating point register."); | |
239 | return; | |
240 | } | |
241 | ||
242 | /* Fetch fpsr. */ | |
243 | if (FPS_REGNUM == regno) | |
244 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
245 | ||
246 | /* Fetch the floating point register. */ | |
247 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
248 | { | |
249 | int fn = regno - F0_REGNUM; | |
250 | ||
251 | switch (fp.fType[fn]) | |
252 | { | |
253 | case typeSingle: | |
254 | fetch_nwfpe_single (fn, &fp); | |
255 | break; | |
256 | ||
257 | case typeDouble: | |
258 | fetch_nwfpe_double (fn, &fp); | |
259 | break; | |
260 | ||
261 | case typeExtended: | |
262 | fetch_nwfpe_extended (fn, &fp); | |
263 | break; | |
264 | ||
265 | default: | |
266 | fetch_nwfpe_none (fn); | |
267 | } | |
268 | } | |
269 | } | |
270 | ||
271 | /* Get the whole floating point state of the process and store it | |
272 | into registers[]. */ | |
ed9a39eb JM |
273 | |
274 | static void | |
275 | fetch_fpregs (void) | |
276 | { | |
41c49b06 | 277 | int ret, regno, tid; |
ed9a39eb JM |
278 | FPA11 fp; |
279 | ||
41c49b06 SB |
280 | /* Get the thread id for the ptrace call. */ |
281 | tid = GET_THREAD_ID (inferior_pid); | |
282 | ||
ed9a39eb | 283 | /* Read the floating point state. */ |
41c49b06 | 284 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
285 | if (ret < 0) |
286 | { | |
41c49b06 | 287 | warning ("Unable to fetch the floating point registers."); |
ed9a39eb JM |
288 | return; |
289 | } | |
290 | ||
291 | /* Fetch fpsr. */ | |
292 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
293 | ||
294 | /* Fetch the floating point registers. */ | |
295 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
296 | { | |
297 | int fn = regno - F0_REGNUM; | |
ed9a39eb JM |
298 | |
299 | switch (fp.fType[fn]) | |
300 | { | |
301 | case typeSingle: | |
56624b0a | 302 | fetch_nwfpe_single (fn, &fp); |
ed9a39eb JM |
303 | break; |
304 | ||
305 | case typeDouble: | |
56624b0a | 306 | fetch_nwfpe_double (fn, &fp); |
ed9a39eb JM |
307 | break; |
308 | ||
309 | case typeExtended: | |
56624b0a | 310 | fetch_nwfpe_extended (fn, &fp); |
ed9a39eb JM |
311 | break; |
312 | ||
313 | default: | |
56624b0a | 314 | fetch_nwfpe_none (fn); |
ed9a39eb JM |
315 | } |
316 | } | |
317 | } | |
318 | ||
41c49b06 SB |
319 | /* Save a particular register into the floating point state of the |
320 | process using the contents from registers[]. */ | |
321 | ||
322 | static void | |
323 | store_fpregister (int regno) | |
324 | { | |
325 | int ret, tid; | |
326 | FPA11 fp; | |
327 | ||
328 | /* Get the thread id for the ptrace call. */ | |
329 | tid = GET_THREAD_ID (inferior_pid); | |
330 | ||
331 | /* Read the floating point state. */ | |
332 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
333 | if (ret < 0) | |
334 | { | |
335 | warning ("Unable to fetch the floating point registers."); | |
336 | return; | |
337 | } | |
338 | ||
339 | /* Store fpsr. */ | |
340 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) | |
341 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
342 | ||
343 | /* Store the floating point register. */ | |
344 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
345 | { | |
346 | store_nwfpe_register (regno, &fp); | |
347 | } | |
348 | ||
349 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); | |
350 | if (ret < 0) | |
351 | { | |
352 | warning ("Unable to store floating point register."); | |
353 | return; | |
354 | } | |
355 | } | |
356 | ||
ed9a39eb JM |
357 | /* Save the whole floating point state of the process using |
358 | the contents from registers[]. */ | |
359 | ||
360 | static void | |
361 | store_fpregs (void) | |
362 | { | |
41c49b06 | 363 | int ret, regno, tid; |
ed9a39eb JM |
364 | FPA11 fp; |
365 | ||
41c49b06 SB |
366 | /* Get the thread id for the ptrace call. */ |
367 | tid = GET_THREAD_ID (inferior_pid); | |
368 | ||
369 | /* Read the floating point state. */ | |
370 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
371 | if (ret < 0) | |
372 | { | |
373 | warning ("Unable to fetch the floating point registers."); | |
374 | return; | |
375 | } | |
376 | ||
ed9a39eb JM |
377 | /* Store fpsr. */ |
378 | if (register_valid[FPS_REGNUM]) | |
379 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
380 | ||
381 | /* Store the floating point registers. */ | |
382 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
383 | { | |
41c49b06 | 384 | fetch_nwfpe_register (regno, &fp); |
ed9a39eb JM |
385 | } |
386 | ||
41c49b06 | 387 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
388 | if (ret < 0) |
389 | { | |
41c49b06 | 390 | warning ("Unable to store floating point registers."); |
ed9a39eb JM |
391 | return; |
392 | } | |
393 | } | |
394 | ||
41c49b06 SB |
395 | /* Fetch a general register of the process and store into |
396 | registers[]. */ | |
397 | ||
398 | static void | |
399 | fetch_register (int regno) | |
400 | { | |
401 | int ret, tid; | |
402 | struct pt_regs regs; | |
403 | ||
404 | /* Get the thread id for the ptrace call. */ | |
405 | tid = GET_THREAD_ID (inferior_pid); | |
406 | ||
407 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
408 | if (ret < 0) | |
409 | { | |
410 | warning ("Unable to fetch general register."); | |
411 | return; | |
412 | } | |
413 | ||
414 | if (regno >= A1_REGNUM && regno < PC_REGNUM) | |
415 | supply_register (regno, (char *) ®s.uregs[regno]); | |
416 | ||
417 | if (PS_REGNUM == regno) | |
418 | { | |
419 | if (arm_apcs_32) | |
420 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
421 | else | |
422 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
423 | } | |
424 | ||
425 | if (PC_REGNUM == regno) | |
426 | { | |
427 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
428 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
429 | } | |
430 | } | |
431 | ||
ed9a39eb JM |
432 | /* Fetch all general registers of the process and store into |
433 | registers[]. */ | |
434 | ||
435 | static void | |
436 | fetch_regs (void) | |
437 | { | |
41c49b06 | 438 | int ret, regno, tid; |
ed9a39eb JM |
439 | struct pt_regs regs; |
440 | ||
41c49b06 SB |
441 | /* Get the thread id for the ptrace call. */ |
442 | tid = GET_THREAD_ID (inferior_pid); | |
443 | ||
444 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
445 | if (ret < 0) |
446 | { | |
447 | warning ("Unable to fetch general registers."); | |
448 | return; | |
449 | } | |
450 | ||
451 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
452 | supply_register (regno, (char *) ®s.uregs[regno]); | |
453 | ||
454 | if (arm_apcs_32) | |
455 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
456 | else | |
457 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
458 | ||
459 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
460 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
461 | } | |
462 | ||
463 | /* Store all general registers of the process from the values in | |
464 | registers[]. */ | |
465 | ||
41c49b06 SB |
466 | static void |
467 | store_register (int regno) | |
468 | { | |
469 | int ret, tid; | |
470 | struct pt_regs regs; | |
471 | ||
472 | if (!register_valid[regno]) | |
473 | return; | |
474 | ||
475 | /* Get the thread id for the ptrace call. */ | |
476 | tid = GET_THREAD_ID (inferior_pid); | |
477 | ||
478 | /* Get the general registers from the process. */ | |
479 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
480 | if (ret < 0) | |
481 | { | |
482 | warning ("Unable to fetch general registers."); | |
483 | return; | |
484 | } | |
485 | ||
486 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
487 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
488 | ||
489 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
490 | if (ret < 0) | |
491 | { | |
492 | warning ("Unable to store general register."); | |
493 | return; | |
494 | } | |
495 | } | |
496 | ||
ed9a39eb JM |
497 | static void |
498 | store_regs (void) | |
499 | { | |
41c49b06 | 500 | int ret, regno, tid; |
ed9a39eb JM |
501 | struct pt_regs regs; |
502 | ||
41c49b06 SB |
503 | /* Get the thread id for the ptrace call. */ |
504 | tid = GET_THREAD_ID (inferior_pid); | |
505 | ||
506 | /* Fetch the general registers. */ | |
507 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
508 | if (ret < 0) |
509 | { | |
510 | warning ("Unable to fetch general registers."); | |
511 | return; | |
512 | } | |
513 | ||
514 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) | |
515 | { | |
516 | if (register_valid[regno]) | |
517 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
518 | } | |
519 | ||
41c49b06 | 520 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
521 | |
522 | if (ret < 0) | |
523 | { | |
524 | warning ("Unable to store general registers."); | |
525 | return; | |
526 | } | |
527 | } | |
528 | ||
529 | /* Fetch registers from the child process. Fetch all registers if | |
530 | regno == -1, otherwise fetch all general registers or all floating | |
531 | point registers depending upon the value of regno. */ | |
532 | ||
533 | void | |
534 | fetch_inferior_registers (int regno) | |
535 | { | |
41c49b06 SB |
536 | if (-1 == regno) |
537 | { | |
538 | fetch_regs (); | |
539 | fetch_fpregs (); | |
540 | } | |
541 | else | |
542 | { | |
543 | if (regno < F0_REGNUM || regno > FPS_REGNUM) | |
544 | fetch_register (regno); | |
ed9a39eb | 545 | |
41c49b06 SB |
546 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
547 | fetch_fpregister (regno); | |
548 | } | |
ed9a39eb JM |
549 | } |
550 | ||
551 | /* Store registers back into the inferior. Store all registers if | |
552 | regno == -1, otherwise store all general registers or all floating | |
553 | point registers depending upon the value of regno. */ | |
554 | ||
555 | void | |
556 | store_inferior_registers (int regno) | |
557 | { | |
41c49b06 SB |
558 | if (-1 == regno) |
559 | { | |
560 | store_regs (); | |
561 | store_fpregs (); | |
562 | } | |
563 | else | |
564 | { | |
565 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) | |
566 | store_register (regno); | |
ed9a39eb | 567 | |
41c49b06 SB |
568 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
569 | store_fpregister (regno); | |
570 | } | |
ed9a39eb JM |
571 | } |
572 | ||
41c49b06 SB |
573 | /* Fill register regno (if it is a general-purpose register) in |
574 | *gregsetp with the appropriate value from GDB's register array. | |
575 | If regno is -1, do this for all registers. */ | |
576 | ||
577 | void | |
578 | fill_gregset (gregset_t *gregsetp, int regno) | |
579 | { | |
580 | if (-1 == regno) | |
581 | { | |
582 | int regnum; | |
583 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) | |
584 | if (register_valid[regnum]) | |
585 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); | |
586 | } | |
587 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
588 | { | |
589 | if (register_valid[regno]) | |
590 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); | |
591 | } | |
592 | ||
593 | if (PS_REGNUM == regno || -1 == regno) | |
594 | { | |
595 | if (register_valid[regno] || -1 == regno) | |
596 | { | |
597 | if (arm_apcs_32) | |
598 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
599 | else | |
600 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
601 | } | |
602 | } | |
603 | ||
604 | } | |
605 | ||
606 | /* Fill GDB's register array with the general-purpose register values | |
607 | in *gregsetp. */ | |
608 | ||
609 | void | |
610 | supply_gregset (gregset_t *gregsetp) | |
611 | { | |
612 | int regno, reg_pc; | |
613 | ||
614 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
615 | supply_register (regno, (char *) &(*gregsetp)[regno]); | |
616 | ||
617 | if (arm_apcs_32) | |
618 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
619 | else | |
620 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
621 | ||
622 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); | |
623 | supply_register (PC_REGNUM, (char *) ®_pc); | |
624 | } | |
625 | ||
626 | /* Fill register regno (if it is a floating-point register) in | |
627 | *fpregsetp with the appropriate value from GDB's register array. | |
628 | If regno is -1, do this for all registers. */ | |
629 | ||
630 | void | |
631 | fill_fpregset (fpregset_t *fpregsetp, int regno) | |
632 | { | |
633 | FPA11 *fp = (FPA11 *) fpregsetp; | |
634 | ||
635 | if (-1 == regno) | |
636 | { | |
637 | int regnum; | |
638 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) | |
639 | store_nwfpe_register (regnum, fp); | |
640 | } | |
641 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
642 | { | |
643 | store_nwfpe_register (regno, fp); | |
644 | return; | |
645 | } | |
646 | ||
647 | /* Store fpsr. */ | |
648 | if (register_valid[FPS_REGNUM]) | |
649 | if (FPS_REGNUM == regno || -1 == regno) | |
650 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); | |
651 | } | |
652 | ||
653 | /* Fill GDB's register array with the floating-point register values | |
654 | in *fpregsetp. */ | |
655 | ||
656 | void | |
657 | supply_fpregset (fpregset_t *fpregsetp) | |
ed9a39eb | 658 | { |
41c49b06 SB |
659 | int regno; |
660 | FPA11 *fp = (FPA11 *) fpregsetp; | |
661 | ||
662 | /* Fetch fpsr. */ | |
663 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); | |
664 | ||
665 | /* Fetch the floating point registers. */ | |
666 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
667 | { | |
668 | fetch_nwfpe_register (regno, fp); | |
669 | } | |
ed9a39eb JM |
670 | } |
671 | ||
672 | int | |
673 | arm_linux_kernel_u_size (void) | |
674 | { | |
675 | return (sizeof (struct user)); | |
676 | } | |
677 | ||
ed9a39eb JM |
678 | static unsigned int |
679 | get_linux_version (unsigned int *vmajor, | |
680 | unsigned int *vminor, | |
681 | unsigned int *vrelease) | |
682 | { | |
683 | struct utsname info; | |
684 | char *pmajor, *pminor, *prelease, *tail; | |
685 | ||
686 | if (-1 == uname (&info)) | |
687 | { | |
688 | warning ("Unable to determine Linux version."); | |
689 | return -1; | |
690 | } | |
691 | ||
692 | pmajor = strtok (info.release, "."); | |
693 | pminor = strtok (NULL, "."); | |
694 | prelease = strtok (NULL, "."); | |
695 | ||
696 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
697 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
698 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
699 | ||
700 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
701 | } | |
702 | ||
703 | void | |
704 | _initialize_arm_linux_nat (void) | |
705 | { | |
706 | os_version = get_linux_version (&os_major, &os_minor, &os_release); | |
707 | } |