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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 | |
433144fb DJ |
32 | #include <asm/ptrace.h> |
33 | ||
c60c0f5f MS |
34 | /* Prototypes for supply_gregset etc. */ |
35 | #include "gregset.h" | |
36 | ||
ed9a39eb JM |
37 | extern int arm_apcs_32; |
38 | ||
39 | #define typeNone 0x00 | |
40 | #define typeSingle 0x01 | |
41 | #define typeDouble 0x02 | |
42 | #define typeExtended 0x03 | |
43 | #define FPWORDS 28 | |
44 | #define CPSR_REGNUM 16 | |
45 | ||
46 | typedef union tagFPREG | |
47 | { | |
48 | unsigned int fSingle; | |
49 | unsigned int fDouble[2]; | |
50 | unsigned int fExtended[3]; | |
51 | } | |
52 | FPREG; | |
53 | ||
54 | typedef struct tagFPA11 | |
55 | { | |
56 | FPREG fpreg[8]; /* 8 floating point registers */ | |
57 | unsigned int fpsr; /* floating point status register */ | |
58 | unsigned int fpcr; /* floating point control register */ | |
59 | unsigned char fType[8]; /* type of floating point value held in | |
60 | floating point registers. */ | |
61 | int initflag; /* NWFPE initialization flag. */ | |
62 | } | |
63 | FPA11; | |
64 | ||
65 | /* The following variables are used to determine the version of the | |
66 | underlying Linux operating system. Examples: | |
67 | ||
68 | Linux 2.0.35 Linux 2.2.12 | |
69 | os_version = 0x00020023 os_version = 0x0002020c | |
70 | os_major = 2 os_major = 2 | |
71 | os_minor = 0 os_minor = 2 | |
72 | os_release = 35 os_release = 12 | |
73 | ||
74 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release | |
75 | ||
76 | These are initialized using get_linux_version() from | |
77 | _initialize_arm_linux_nat(). */ | |
78 | ||
79 | static unsigned int os_version, os_major, os_minor, os_release; | |
80 | ||
41c49b06 SB |
81 | /* On Linux, threads are implemented as pseudo-processes, in which |
82 | case we may be tracing more than one process at a time. In that | |
39f77062 | 83 | case, inferior_ptid will contain the main process ID and the |
ca6724c1 KB |
84 | individual thread (process) ID. get_thread_id () is used to |
85 | get the thread id if it's available, and the process id otherwise. */ | |
41c49b06 SB |
86 | |
87 | int | |
39f77062 | 88 | get_thread_id (ptid_t ptid) |
41c49b06 | 89 | { |
39f77062 KB |
90 | int tid = TIDGET (ptid); |
91 | if (0 == tid) | |
92 | tid = PIDGET (ptid); | |
41c49b06 SB |
93 | return tid; |
94 | } | |
39f77062 | 95 | #define GET_THREAD_ID(PTID) get_thread_id ((PTID)); |
41c49b06 | 96 | |
ed9a39eb | 97 | static void |
56624b0a | 98 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
99 | { |
100 | unsigned int mem[3]; | |
101 | ||
102 | mem[0] = fpa11->fpreg[fn].fSingle; | |
103 | mem[1] = 0; | |
104 | mem[2] = 0; | |
105 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
106 | } | |
107 | ||
108 | static void | |
56624b0a | 109 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
110 | { |
111 | unsigned int mem[3]; | |
112 | ||
113 | mem[0] = fpa11->fpreg[fn].fDouble[1]; | |
114 | mem[1] = fpa11->fpreg[fn].fDouble[0]; | |
115 | mem[2] = 0; | |
116 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
117 | } | |
118 | ||
119 | static void | |
56624b0a | 120 | fetch_nwfpe_none (unsigned int fn) |
ed9a39eb JM |
121 | { |
122 | unsigned int mem[3] = | |
123 | {0, 0, 0}; | |
124 | ||
125 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
126 | } | |
127 | ||
128 | static void | |
56624b0a | 129 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
130 | { |
131 | unsigned int mem[3]; | |
132 | ||
133 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ | |
134 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ | |
135 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ | |
136 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
137 | } | |
138 | ||
41c49b06 SB |
139 | static void |
140 | fetch_nwfpe_register (int regno, FPA11 * fpa11) | |
141 | { | |
142 | int fn = regno - F0_REGNUM; | |
143 | ||
144 | switch (fpa11->fType[fn]) | |
145 | { | |
146 | case typeSingle: | |
147 | fetch_nwfpe_single (fn, fpa11); | |
148 | break; | |
149 | ||
150 | case typeDouble: | |
151 | fetch_nwfpe_double (fn, fpa11); | |
152 | break; | |
153 | ||
154 | case typeExtended: | |
155 | fetch_nwfpe_extended (fn, fpa11); | |
156 | break; | |
157 | ||
158 | default: | |
159 | fetch_nwfpe_none (fn); | |
160 | } | |
161 | } | |
162 | ||
ed9a39eb | 163 | static void |
56624b0a | 164 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
165 | { |
166 | unsigned int mem[3]; | |
167 | ||
168 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
169 | fpa11->fpreg[fn].fSingle = mem[0]; | |
170 | fpa11->fType[fn] = typeSingle; | |
171 | } | |
172 | ||
173 | static void | |
56624b0a | 174 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
175 | { |
176 | unsigned int mem[3]; | |
177 | ||
178 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
179 | fpa11->fpreg[fn].fDouble[1] = mem[0]; | |
180 | fpa11->fpreg[fn].fDouble[0] = mem[1]; | |
181 | fpa11->fType[fn] = typeDouble; | |
182 | } | |
183 | ||
184 | void | |
56624b0a | 185 | store_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
186 | { |
187 | unsigned int mem[3]; | |
188 | ||
189 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
190 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ | |
191 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ | |
192 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ | |
193 | fpa11->fType[fn] = typeDouble; | |
194 | } | |
195 | ||
41c49b06 SB |
196 | void |
197 | store_nwfpe_register (int regno, FPA11 * fpa11) | |
198 | { | |
199 | if (register_valid[regno]) | |
200 | { | |
201 | unsigned int fn = regno - F0_REGNUM; | |
202 | switch (fpa11->fType[fn]) | |
203 | { | |
204 | case typeSingle: | |
205 | store_nwfpe_single (fn, fpa11); | |
206 | break; | |
207 | ||
208 | case typeDouble: | |
209 | store_nwfpe_double (fn, fpa11); | |
210 | break; | |
211 | ||
212 | case typeExtended: | |
213 | store_nwfpe_extended (fn, fpa11); | |
214 | break; | |
215 | } | |
216 | } | |
217 | } | |
218 | ||
219 | ||
220 | /* Get the value of a particular register from the floating point | |
221 | state of the process and store it into registers[]. */ | |
222 | ||
223 | static void | |
224 | fetch_fpregister (int regno) | |
225 | { | |
226 | int ret, tid; | |
227 | FPA11 fp; | |
228 | ||
229 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 230 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
231 | |
232 | /* Read the floating point state. */ | |
233 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
234 | if (ret < 0) | |
235 | { | |
236 | warning ("Unable to fetch floating point register."); | |
237 | return; | |
238 | } | |
239 | ||
240 | /* Fetch fpsr. */ | |
241 | if (FPS_REGNUM == regno) | |
242 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
243 | ||
244 | /* Fetch the floating point register. */ | |
245 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
246 | { | |
247 | int fn = regno - F0_REGNUM; | |
248 | ||
249 | switch (fp.fType[fn]) | |
250 | { | |
251 | case typeSingle: | |
252 | fetch_nwfpe_single (fn, &fp); | |
253 | break; | |
254 | ||
255 | case typeDouble: | |
256 | fetch_nwfpe_double (fn, &fp); | |
257 | break; | |
258 | ||
259 | case typeExtended: | |
260 | fetch_nwfpe_extended (fn, &fp); | |
261 | break; | |
262 | ||
263 | default: | |
264 | fetch_nwfpe_none (fn); | |
265 | } | |
266 | } | |
267 | } | |
268 | ||
269 | /* Get the whole floating point state of the process and store it | |
270 | into registers[]. */ | |
ed9a39eb JM |
271 | |
272 | static void | |
273 | fetch_fpregs (void) | |
274 | { | |
41c49b06 | 275 | int ret, regno, tid; |
ed9a39eb JM |
276 | FPA11 fp; |
277 | ||
41c49b06 | 278 | /* Get the thread id for the ptrace call. */ |
39f77062 | 279 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 | 280 | |
ed9a39eb | 281 | /* Read the floating point state. */ |
41c49b06 | 282 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
283 | if (ret < 0) |
284 | { | |
41c49b06 | 285 | warning ("Unable to fetch the floating point registers."); |
ed9a39eb JM |
286 | return; |
287 | } | |
288 | ||
289 | /* Fetch fpsr. */ | |
290 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
291 | ||
292 | /* Fetch the floating point registers. */ | |
293 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
294 | { | |
295 | int fn = regno - F0_REGNUM; | |
ed9a39eb JM |
296 | |
297 | switch (fp.fType[fn]) | |
298 | { | |
299 | case typeSingle: | |
56624b0a | 300 | fetch_nwfpe_single (fn, &fp); |
ed9a39eb JM |
301 | break; |
302 | ||
303 | case typeDouble: | |
56624b0a | 304 | fetch_nwfpe_double (fn, &fp); |
ed9a39eb JM |
305 | break; |
306 | ||
307 | case typeExtended: | |
56624b0a | 308 | fetch_nwfpe_extended (fn, &fp); |
ed9a39eb JM |
309 | break; |
310 | ||
311 | default: | |
56624b0a | 312 | fetch_nwfpe_none (fn); |
ed9a39eb JM |
313 | } |
314 | } | |
315 | } | |
316 | ||
41c49b06 SB |
317 | /* Save a particular register into the floating point state of the |
318 | process using the contents from registers[]. */ | |
319 | ||
320 | static void | |
321 | store_fpregister (int regno) | |
322 | { | |
323 | int ret, tid; | |
324 | FPA11 fp; | |
325 | ||
326 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 327 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
328 | |
329 | /* Read the floating point state. */ | |
330 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
331 | if (ret < 0) | |
332 | { | |
333 | warning ("Unable to fetch the floating point registers."); | |
334 | return; | |
335 | } | |
336 | ||
337 | /* Store fpsr. */ | |
338 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) | |
339 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
340 | ||
341 | /* Store the floating point register. */ | |
342 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
343 | { | |
344 | store_nwfpe_register (regno, &fp); | |
345 | } | |
346 | ||
347 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); | |
348 | if (ret < 0) | |
349 | { | |
350 | warning ("Unable to store floating point register."); | |
351 | return; | |
352 | } | |
353 | } | |
354 | ||
ed9a39eb JM |
355 | /* Save the whole floating point state of the process using |
356 | the contents from registers[]. */ | |
357 | ||
358 | static void | |
359 | store_fpregs (void) | |
360 | { | |
41c49b06 | 361 | int ret, regno, tid; |
ed9a39eb JM |
362 | FPA11 fp; |
363 | ||
41c49b06 | 364 | /* Get the thread id for the ptrace call. */ |
39f77062 | 365 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
366 | |
367 | /* Read the floating point state. */ | |
368 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
369 | if (ret < 0) | |
370 | { | |
371 | warning ("Unable to fetch the floating point registers."); | |
372 | return; | |
373 | } | |
374 | ||
ed9a39eb JM |
375 | /* Store fpsr. */ |
376 | if (register_valid[FPS_REGNUM]) | |
377 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
378 | ||
379 | /* Store the floating point registers. */ | |
380 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
381 | { | |
41c49b06 | 382 | fetch_nwfpe_register (regno, &fp); |
ed9a39eb JM |
383 | } |
384 | ||
41c49b06 | 385 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
386 | if (ret < 0) |
387 | { | |
41c49b06 | 388 | warning ("Unable to store floating point registers."); |
ed9a39eb JM |
389 | return; |
390 | } | |
391 | } | |
392 | ||
41c49b06 SB |
393 | /* Fetch a general register of the process and store into |
394 | registers[]. */ | |
395 | ||
396 | static void | |
397 | fetch_register (int regno) | |
398 | { | |
399 | int ret, tid; | |
400 | struct pt_regs regs; | |
401 | ||
402 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 403 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
404 | |
405 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
406 | if (ret < 0) | |
407 | { | |
408 | warning ("Unable to fetch general register."); | |
409 | return; | |
410 | } | |
411 | ||
412 | if (regno >= A1_REGNUM && regno < PC_REGNUM) | |
413 | supply_register (regno, (char *) ®s.uregs[regno]); | |
414 | ||
415 | if (PS_REGNUM == regno) | |
416 | { | |
417 | if (arm_apcs_32) | |
418 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
419 | else | |
420 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
421 | } | |
422 | ||
423 | if (PC_REGNUM == regno) | |
424 | { | |
425 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
426 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
427 | } | |
428 | } | |
429 | ||
ed9a39eb JM |
430 | /* Fetch all general registers of the process and store into |
431 | registers[]. */ | |
432 | ||
433 | static void | |
434 | fetch_regs (void) | |
435 | { | |
41c49b06 | 436 | int ret, regno, tid; |
ed9a39eb JM |
437 | struct pt_regs regs; |
438 | ||
41c49b06 | 439 | /* Get the thread id for the ptrace call. */ |
39f77062 | 440 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
441 | |
442 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
443 | if (ret < 0) |
444 | { | |
445 | warning ("Unable to fetch general registers."); | |
446 | return; | |
447 | } | |
448 | ||
449 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
450 | supply_register (regno, (char *) ®s.uregs[regno]); | |
451 | ||
452 | if (arm_apcs_32) | |
453 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
454 | else | |
455 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
456 | ||
457 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
458 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
459 | } | |
460 | ||
461 | /* Store all general registers of the process from the values in | |
462 | registers[]. */ | |
463 | ||
41c49b06 SB |
464 | static void |
465 | store_register (int regno) | |
466 | { | |
467 | int ret, tid; | |
468 | struct pt_regs regs; | |
469 | ||
470 | if (!register_valid[regno]) | |
471 | return; | |
472 | ||
473 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 474 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
475 | |
476 | /* Get the general registers from the process. */ | |
477 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
478 | if (ret < 0) | |
479 | { | |
480 | warning ("Unable to fetch general registers."); | |
481 | return; | |
482 | } | |
483 | ||
484 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
485 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
486 | ||
487 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
488 | if (ret < 0) | |
489 | { | |
490 | warning ("Unable to store general register."); | |
491 | return; | |
492 | } | |
493 | } | |
494 | ||
ed9a39eb JM |
495 | static void |
496 | store_regs (void) | |
497 | { | |
41c49b06 | 498 | int ret, regno, tid; |
ed9a39eb JM |
499 | struct pt_regs regs; |
500 | ||
41c49b06 | 501 | /* Get the thread id for the ptrace call. */ |
39f77062 | 502 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
503 | |
504 | /* Fetch the general registers. */ | |
505 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
506 | if (ret < 0) |
507 | { | |
508 | warning ("Unable to fetch general registers."); | |
509 | return; | |
510 | } | |
511 | ||
512 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) | |
513 | { | |
514 | if (register_valid[regno]) | |
515 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
516 | } | |
517 | ||
41c49b06 | 518 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
519 | |
520 | if (ret < 0) | |
521 | { | |
522 | warning ("Unable to store general registers."); | |
523 | return; | |
524 | } | |
525 | } | |
526 | ||
527 | /* Fetch registers from the child process. Fetch all registers if | |
528 | regno == -1, otherwise fetch all general registers or all floating | |
529 | point registers depending upon the value of regno. */ | |
530 | ||
531 | void | |
532 | fetch_inferior_registers (int regno) | |
533 | { | |
41c49b06 SB |
534 | if (-1 == regno) |
535 | { | |
536 | fetch_regs (); | |
537 | fetch_fpregs (); | |
538 | } | |
539 | else | |
540 | { | |
541 | if (regno < F0_REGNUM || regno > FPS_REGNUM) | |
542 | fetch_register (regno); | |
ed9a39eb | 543 | |
41c49b06 SB |
544 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
545 | fetch_fpregister (regno); | |
546 | } | |
ed9a39eb JM |
547 | } |
548 | ||
549 | /* Store registers back into the inferior. Store all registers if | |
550 | regno == -1, otherwise store all general registers or all floating | |
551 | point registers depending upon the value of regno. */ | |
552 | ||
553 | void | |
554 | store_inferior_registers (int regno) | |
555 | { | |
41c49b06 SB |
556 | if (-1 == regno) |
557 | { | |
558 | store_regs (); | |
559 | store_fpregs (); | |
560 | } | |
561 | else | |
562 | { | |
563 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) | |
564 | store_register (regno); | |
ed9a39eb | 565 | |
41c49b06 SB |
566 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
567 | store_fpregister (regno); | |
568 | } | |
ed9a39eb JM |
569 | } |
570 | ||
41c49b06 SB |
571 | /* Fill register regno (if it is a general-purpose register) in |
572 | *gregsetp with the appropriate value from GDB's register array. | |
573 | If regno is -1, do this for all registers. */ | |
574 | ||
575 | void | |
713f0374 | 576 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
41c49b06 SB |
577 | { |
578 | if (-1 == regno) | |
579 | { | |
580 | int regnum; | |
581 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) | |
17fd1ad9 | 582 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); |
41c49b06 SB |
583 | } |
584 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
17fd1ad9 | 585 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); |
41c49b06 SB |
586 | |
587 | if (PS_REGNUM == regno || -1 == regno) | |
588 | { | |
17fd1ad9 DJ |
589 | if (arm_apcs_32) |
590 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
591 | else | |
592 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
41c49b06 | 593 | } |
41c49b06 SB |
594 | } |
595 | ||
596 | /* Fill GDB's register array with the general-purpose register values | |
597 | in *gregsetp. */ | |
598 | ||
599 | void | |
713f0374 | 600 | supply_gregset (gdb_gregset_t *gregsetp) |
41c49b06 SB |
601 | { |
602 | int regno, reg_pc; | |
603 | ||
604 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
605 | supply_register (regno, (char *) &(*gregsetp)[regno]); | |
606 | ||
607 | if (arm_apcs_32) | |
608 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
609 | else | |
610 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
611 | ||
612 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); | |
613 | supply_register (PC_REGNUM, (char *) ®_pc); | |
614 | } | |
615 | ||
616 | /* Fill register regno (if it is a floating-point register) in | |
617 | *fpregsetp with the appropriate value from GDB's register array. | |
618 | If regno is -1, do this for all registers. */ | |
619 | ||
620 | void | |
713f0374 | 621 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
41c49b06 SB |
622 | { |
623 | FPA11 *fp = (FPA11 *) fpregsetp; | |
624 | ||
625 | if (-1 == regno) | |
626 | { | |
627 | int regnum; | |
628 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) | |
629 | store_nwfpe_register (regnum, fp); | |
630 | } | |
631 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
632 | { | |
633 | store_nwfpe_register (regno, fp); | |
634 | return; | |
635 | } | |
636 | ||
637 | /* Store fpsr. */ | |
17fd1ad9 DJ |
638 | if (FPS_REGNUM == regno || -1 == regno) |
639 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); | |
41c49b06 SB |
640 | } |
641 | ||
642 | /* Fill GDB's register array with the floating-point register values | |
643 | in *fpregsetp. */ | |
644 | ||
645 | void | |
713f0374 | 646 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
ed9a39eb | 647 | { |
41c49b06 SB |
648 | int regno; |
649 | FPA11 *fp = (FPA11 *) fpregsetp; | |
650 | ||
651 | /* Fetch fpsr. */ | |
652 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); | |
653 | ||
654 | /* Fetch the floating point registers. */ | |
655 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
656 | { | |
657 | fetch_nwfpe_register (regno, fp); | |
658 | } | |
ed9a39eb JM |
659 | } |
660 | ||
661 | int | |
662 | arm_linux_kernel_u_size (void) | |
663 | { | |
664 | return (sizeof (struct user)); | |
665 | } | |
666 | ||
ed9a39eb JM |
667 | static unsigned int |
668 | get_linux_version (unsigned int *vmajor, | |
669 | unsigned int *vminor, | |
670 | unsigned int *vrelease) | |
671 | { | |
672 | struct utsname info; | |
673 | char *pmajor, *pminor, *prelease, *tail; | |
674 | ||
675 | if (-1 == uname (&info)) | |
676 | { | |
677 | warning ("Unable to determine Linux version."); | |
678 | return -1; | |
679 | } | |
680 | ||
681 | pmajor = strtok (info.release, "."); | |
682 | pminor = strtok (NULL, "."); | |
683 | prelease = strtok (NULL, "."); | |
684 | ||
685 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
686 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
687 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
688 | ||
689 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
690 | } | |
691 | ||
692 | void | |
693 | _initialize_arm_linux_nat (void) | |
694 | { | |
695 | os_version = get_linux_version (&os_major, &os_minor, &os_release); | |
696 | } |