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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 | |
39f77062 | 81 | case, inferior_ptid will contain the main process ID and the |
41c49b06 SB |
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 | |
39f77062 | 92 | get_thread_id (ptid_t ptid) |
41c49b06 | 93 | { |
39f77062 KB |
94 | int tid = TIDGET (ptid); |
95 | if (0 == tid) | |
96 | tid = PIDGET (ptid); | |
41c49b06 SB |
97 | return tid; |
98 | } | |
39f77062 | 99 | #define GET_THREAD_ID(PTID) get_thread_id ((PTID)); |
41c49b06 | 100 | |
ed9a39eb | 101 | static void |
56624b0a | 102 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
103 | { |
104 | unsigned int mem[3]; | |
105 | ||
106 | mem[0] = fpa11->fpreg[fn].fSingle; | |
107 | mem[1] = 0; | |
108 | mem[2] = 0; | |
109 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
110 | } | |
111 | ||
112 | static void | |
56624b0a | 113 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
114 | { |
115 | unsigned int mem[3]; | |
116 | ||
117 | mem[0] = fpa11->fpreg[fn].fDouble[1]; | |
118 | mem[1] = fpa11->fpreg[fn].fDouble[0]; | |
119 | mem[2] = 0; | |
120 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
121 | } | |
122 | ||
123 | static void | |
56624b0a | 124 | fetch_nwfpe_none (unsigned int fn) |
ed9a39eb JM |
125 | { |
126 | unsigned int mem[3] = | |
127 | {0, 0, 0}; | |
128 | ||
129 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
130 | } | |
131 | ||
132 | static void | |
56624b0a | 133 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
134 | { |
135 | unsigned int mem[3]; | |
136 | ||
137 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ | |
138 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ | |
139 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ | |
140 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
141 | } | |
142 | ||
41c49b06 SB |
143 | static void |
144 | fetch_nwfpe_register (int regno, FPA11 * fpa11) | |
145 | { | |
146 | int fn = regno - F0_REGNUM; | |
147 | ||
148 | switch (fpa11->fType[fn]) | |
149 | { | |
150 | case typeSingle: | |
151 | fetch_nwfpe_single (fn, fpa11); | |
152 | break; | |
153 | ||
154 | case typeDouble: | |
155 | fetch_nwfpe_double (fn, fpa11); | |
156 | break; | |
157 | ||
158 | case typeExtended: | |
159 | fetch_nwfpe_extended (fn, fpa11); | |
160 | break; | |
161 | ||
162 | default: | |
163 | fetch_nwfpe_none (fn); | |
164 | } | |
165 | } | |
166 | ||
ed9a39eb | 167 | static void |
56624b0a | 168 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
169 | { |
170 | unsigned int mem[3]; | |
171 | ||
172 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
173 | fpa11->fpreg[fn].fSingle = mem[0]; | |
174 | fpa11->fType[fn] = typeSingle; | |
175 | } | |
176 | ||
177 | static void | |
56624b0a | 178 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
179 | { |
180 | unsigned int mem[3]; | |
181 | ||
182 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
183 | fpa11->fpreg[fn].fDouble[1] = mem[0]; | |
184 | fpa11->fpreg[fn].fDouble[0] = mem[1]; | |
185 | fpa11->fType[fn] = typeDouble; | |
186 | } | |
187 | ||
188 | void | |
56624b0a | 189 | store_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
190 | { |
191 | unsigned int mem[3]; | |
192 | ||
193 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
194 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ | |
195 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ | |
196 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ | |
197 | fpa11->fType[fn] = typeDouble; | |
198 | } | |
199 | ||
41c49b06 SB |
200 | void |
201 | store_nwfpe_register (int regno, FPA11 * fpa11) | |
202 | { | |
203 | if (register_valid[regno]) | |
204 | { | |
205 | unsigned int fn = regno - F0_REGNUM; | |
206 | switch (fpa11->fType[fn]) | |
207 | { | |
208 | case typeSingle: | |
209 | store_nwfpe_single (fn, fpa11); | |
210 | break; | |
211 | ||
212 | case typeDouble: | |
213 | store_nwfpe_double (fn, fpa11); | |
214 | break; | |
215 | ||
216 | case typeExtended: | |
217 | store_nwfpe_extended (fn, fpa11); | |
218 | break; | |
219 | } | |
220 | } | |
221 | } | |
222 | ||
223 | ||
224 | /* Get the value of a particular register from the floating point | |
225 | state of the process and store it into registers[]. */ | |
226 | ||
227 | static void | |
228 | fetch_fpregister (int regno) | |
229 | { | |
230 | int ret, tid; | |
231 | FPA11 fp; | |
232 | ||
233 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 234 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
235 | |
236 | /* Read the floating point state. */ | |
237 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
238 | if (ret < 0) | |
239 | { | |
240 | warning ("Unable to fetch floating point register."); | |
241 | return; | |
242 | } | |
243 | ||
244 | /* Fetch fpsr. */ | |
245 | if (FPS_REGNUM == regno) | |
246 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
247 | ||
248 | /* Fetch the floating point register. */ | |
249 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
250 | { | |
251 | int fn = regno - F0_REGNUM; | |
252 | ||
253 | switch (fp.fType[fn]) | |
254 | { | |
255 | case typeSingle: | |
256 | fetch_nwfpe_single (fn, &fp); | |
257 | break; | |
258 | ||
259 | case typeDouble: | |
260 | fetch_nwfpe_double (fn, &fp); | |
261 | break; | |
262 | ||
263 | case typeExtended: | |
264 | fetch_nwfpe_extended (fn, &fp); | |
265 | break; | |
266 | ||
267 | default: | |
268 | fetch_nwfpe_none (fn); | |
269 | } | |
270 | } | |
271 | } | |
272 | ||
273 | /* Get the whole floating point state of the process and store it | |
274 | into registers[]. */ | |
ed9a39eb JM |
275 | |
276 | static void | |
277 | fetch_fpregs (void) | |
278 | { | |
41c49b06 | 279 | int ret, regno, tid; |
ed9a39eb JM |
280 | FPA11 fp; |
281 | ||
41c49b06 | 282 | /* Get the thread id for the ptrace call. */ |
39f77062 | 283 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 | 284 | |
ed9a39eb | 285 | /* Read the floating point state. */ |
41c49b06 | 286 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
287 | if (ret < 0) |
288 | { | |
41c49b06 | 289 | warning ("Unable to fetch the floating point registers."); |
ed9a39eb JM |
290 | return; |
291 | } | |
292 | ||
293 | /* Fetch fpsr. */ | |
294 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
295 | ||
296 | /* Fetch the floating point registers. */ | |
297 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
298 | { | |
299 | int fn = regno - F0_REGNUM; | |
ed9a39eb JM |
300 | |
301 | switch (fp.fType[fn]) | |
302 | { | |
303 | case typeSingle: | |
56624b0a | 304 | fetch_nwfpe_single (fn, &fp); |
ed9a39eb JM |
305 | break; |
306 | ||
307 | case typeDouble: | |
56624b0a | 308 | fetch_nwfpe_double (fn, &fp); |
ed9a39eb JM |
309 | break; |
310 | ||
311 | case typeExtended: | |
56624b0a | 312 | fetch_nwfpe_extended (fn, &fp); |
ed9a39eb JM |
313 | break; |
314 | ||
315 | default: | |
56624b0a | 316 | fetch_nwfpe_none (fn); |
ed9a39eb JM |
317 | } |
318 | } | |
319 | } | |
320 | ||
41c49b06 SB |
321 | /* Save a particular register into the floating point state of the |
322 | process using the contents from registers[]. */ | |
323 | ||
324 | static void | |
325 | store_fpregister (int regno) | |
326 | { | |
327 | int ret, tid; | |
328 | FPA11 fp; | |
329 | ||
330 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 331 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
332 | |
333 | /* Read the floating point state. */ | |
334 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
335 | if (ret < 0) | |
336 | { | |
337 | warning ("Unable to fetch the floating point registers."); | |
338 | return; | |
339 | } | |
340 | ||
341 | /* Store fpsr. */ | |
342 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) | |
343 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
344 | ||
345 | /* Store the floating point register. */ | |
346 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
347 | { | |
348 | store_nwfpe_register (regno, &fp); | |
349 | } | |
350 | ||
351 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); | |
352 | if (ret < 0) | |
353 | { | |
354 | warning ("Unable to store floating point register."); | |
355 | return; | |
356 | } | |
357 | } | |
358 | ||
ed9a39eb JM |
359 | /* Save the whole floating point state of the process using |
360 | the contents from registers[]. */ | |
361 | ||
362 | static void | |
363 | store_fpregs (void) | |
364 | { | |
41c49b06 | 365 | int ret, regno, tid; |
ed9a39eb JM |
366 | FPA11 fp; |
367 | ||
41c49b06 | 368 | /* Get the thread id for the ptrace call. */ |
39f77062 | 369 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
370 | |
371 | /* Read the floating point state. */ | |
372 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
373 | if (ret < 0) | |
374 | { | |
375 | warning ("Unable to fetch the floating point registers."); | |
376 | return; | |
377 | } | |
378 | ||
ed9a39eb JM |
379 | /* Store fpsr. */ |
380 | if (register_valid[FPS_REGNUM]) | |
381 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
382 | ||
383 | /* Store the floating point registers. */ | |
384 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
385 | { | |
41c49b06 | 386 | fetch_nwfpe_register (regno, &fp); |
ed9a39eb JM |
387 | } |
388 | ||
41c49b06 | 389 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
390 | if (ret < 0) |
391 | { | |
41c49b06 | 392 | warning ("Unable to store floating point registers."); |
ed9a39eb JM |
393 | return; |
394 | } | |
395 | } | |
396 | ||
41c49b06 SB |
397 | /* Fetch a general register of the process and store into |
398 | registers[]. */ | |
399 | ||
400 | static void | |
401 | fetch_register (int regno) | |
402 | { | |
403 | int ret, tid; | |
404 | struct pt_regs regs; | |
405 | ||
406 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 407 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
408 | |
409 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
410 | if (ret < 0) | |
411 | { | |
412 | warning ("Unable to fetch general register."); | |
413 | return; | |
414 | } | |
415 | ||
416 | if (regno >= A1_REGNUM && regno < PC_REGNUM) | |
417 | supply_register (regno, (char *) ®s.uregs[regno]); | |
418 | ||
419 | if (PS_REGNUM == regno) | |
420 | { | |
421 | if (arm_apcs_32) | |
422 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
423 | else | |
424 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
425 | } | |
426 | ||
427 | if (PC_REGNUM == regno) | |
428 | { | |
429 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
430 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
431 | } | |
432 | } | |
433 | ||
ed9a39eb JM |
434 | /* Fetch all general registers of the process and store into |
435 | registers[]. */ | |
436 | ||
437 | static void | |
438 | fetch_regs (void) | |
439 | { | |
41c49b06 | 440 | int ret, regno, tid; |
ed9a39eb JM |
441 | struct pt_regs regs; |
442 | ||
41c49b06 | 443 | /* Get the thread id for the ptrace call. */ |
39f77062 | 444 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
445 | |
446 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
447 | if (ret < 0) |
448 | { | |
449 | warning ("Unable to fetch general registers."); | |
450 | return; | |
451 | } | |
452 | ||
453 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
454 | supply_register (regno, (char *) ®s.uregs[regno]); | |
455 | ||
456 | if (arm_apcs_32) | |
457 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); | |
458 | else | |
459 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
460 | ||
461 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); | |
462 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); | |
463 | } | |
464 | ||
465 | /* Store all general registers of the process from the values in | |
466 | registers[]. */ | |
467 | ||
41c49b06 SB |
468 | static void |
469 | store_register (int regno) | |
470 | { | |
471 | int ret, tid; | |
472 | struct pt_regs regs; | |
473 | ||
474 | if (!register_valid[regno]) | |
475 | return; | |
476 | ||
477 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 478 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
479 | |
480 | /* Get the general registers from the process. */ | |
481 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
482 | if (ret < 0) | |
483 | { | |
484 | warning ("Unable to fetch general registers."); | |
485 | return; | |
486 | } | |
487 | ||
488 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
489 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
490 | ||
491 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
492 | if (ret < 0) | |
493 | { | |
494 | warning ("Unable to store general register."); | |
495 | return; | |
496 | } | |
497 | } | |
498 | ||
ed9a39eb JM |
499 | static void |
500 | store_regs (void) | |
501 | { | |
41c49b06 | 502 | int ret, regno, tid; |
ed9a39eb JM |
503 | struct pt_regs regs; |
504 | ||
41c49b06 | 505 | /* Get the thread id for the ptrace call. */ |
39f77062 | 506 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
507 | |
508 | /* Fetch the general registers. */ | |
509 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
510 | if (ret < 0) |
511 | { | |
512 | warning ("Unable to fetch general registers."); | |
513 | return; | |
514 | } | |
515 | ||
516 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) | |
517 | { | |
518 | if (register_valid[regno]) | |
519 | read_register_gen (regno, (char *) ®s.uregs[regno]); | |
520 | } | |
521 | ||
41c49b06 | 522 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
523 | |
524 | if (ret < 0) | |
525 | { | |
526 | warning ("Unable to store general registers."); | |
527 | return; | |
528 | } | |
529 | } | |
530 | ||
531 | /* Fetch registers from the child process. Fetch all registers if | |
532 | regno == -1, otherwise fetch all general registers or all floating | |
533 | point registers depending upon the value of regno. */ | |
534 | ||
535 | void | |
536 | fetch_inferior_registers (int regno) | |
537 | { | |
41c49b06 SB |
538 | if (-1 == regno) |
539 | { | |
540 | fetch_regs (); | |
541 | fetch_fpregs (); | |
542 | } | |
543 | else | |
544 | { | |
545 | if (regno < F0_REGNUM || regno > FPS_REGNUM) | |
546 | fetch_register (regno); | |
ed9a39eb | 547 | |
41c49b06 SB |
548 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
549 | fetch_fpregister (regno); | |
550 | } | |
ed9a39eb JM |
551 | } |
552 | ||
553 | /* Store registers back into the inferior. Store all registers if | |
554 | regno == -1, otherwise store all general registers or all floating | |
555 | point registers depending upon the value of regno. */ | |
556 | ||
557 | void | |
558 | store_inferior_registers (int regno) | |
559 | { | |
41c49b06 SB |
560 | if (-1 == regno) |
561 | { | |
562 | store_regs (); | |
563 | store_fpregs (); | |
564 | } | |
565 | else | |
566 | { | |
567 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) | |
568 | store_register (regno); | |
ed9a39eb | 569 | |
41c49b06 SB |
570 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
571 | store_fpregister (regno); | |
572 | } | |
ed9a39eb JM |
573 | } |
574 | ||
41c49b06 SB |
575 | /* Fill register regno (if it is a general-purpose register) in |
576 | *gregsetp with the appropriate value from GDB's register array. | |
577 | If regno is -1, do this for all registers. */ | |
578 | ||
579 | void | |
713f0374 | 580 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
41c49b06 SB |
581 | { |
582 | if (-1 == regno) | |
583 | { | |
584 | int regnum; | |
585 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) | |
586 | if (register_valid[regnum]) | |
587 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); | |
588 | } | |
589 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
590 | { | |
591 | if (register_valid[regno]) | |
592 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); | |
593 | } | |
594 | ||
595 | if (PS_REGNUM == regno || -1 == regno) | |
596 | { | |
597 | if (register_valid[regno] || -1 == regno) | |
598 | { | |
599 | if (arm_apcs_32) | |
600 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
601 | else | |
602 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
603 | } | |
604 | } | |
605 | ||
606 | } | |
607 | ||
608 | /* Fill GDB's register array with the general-purpose register values | |
609 | in *gregsetp. */ | |
610 | ||
611 | void | |
713f0374 | 612 | supply_gregset (gdb_gregset_t *gregsetp) |
41c49b06 SB |
613 | { |
614 | int regno, reg_pc; | |
615 | ||
616 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
617 | supply_register (regno, (char *) &(*gregsetp)[regno]); | |
618 | ||
619 | if (arm_apcs_32) | |
620 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
621 | else | |
622 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
623 | ||
624 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); | |
625 | supply_register (PC_REGNUM, (char *) ®_pc); | |
626 | } | |
627 | ||
628 | /* Fill register regno (if it is a floating-point register) in | |
629 | *fpregsetp with the appropriate value from GDB's register array. | |
630 | If regno is -1, do this for all registers. */ | |
631 | ||
632 | void | |
713f0374 | 633 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
41c49b06 SB |
634 | { |
635 | FPA11 *fp = (FPA11 *) fpregsetp; | |
636 | ||
637 | if (-1 == regno) | |
638 | { | |
639 | int regnum; | |
640 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) | |
641 | store_nwfpe_register (regnum, fp); | |
642 | } | |
643 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
644 | { | |
645 | store_nwfpe_register (regno, fp); | |
646 | return; | |
647 | } | |
648 | ||
649 | /* Store fpsr. */ | |
650 | if (register_valid[FPS_REGNUM]) | |
651 | if (FPS_REGNUM == regno || -1 == regno) | |
652 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); | |
653 | } | |
654 | ||
655 | /* Fill GDB's register array with the floating-point register values | |
656 | in *fpregsetp. */ | |
657 | ||
658 | void | |
713f0374 | 659 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
ed9a39eb | 660 | { |
41c49b06 SB |
661 | int regno; |
662 | FPA11 *fp = (FPA11 *) fpregsetp; | |
663 | ||
664 | /* Fetch fpsr. */ | |
665 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); | |
666 | ||
667 | /* Fetch the floating point registers. */ | |
668 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
669 | { | |
670 | fetch_nwfpe_register (regno, fp); | |
671 | } | |
ed9a39eb JM |
672 | } |
673 | ||
674 | int | |
675 | arm_linux_kernel_u_size (void) | |
676 | { | |
677 | return (sizeof (struct user)); | |
678 | } | |
679 | ||
ed9a39eb JM |
680 | static unsigned int |
681 | get_linux_version (unsigned int *vmajor, | |
682 | unsigned int *vminor, | |
683 | unsigned int *vrelease) | |
684 | { | |
685 | struct utsname info; | |
686 | char *pmajor, *pminor, *prelease, *tail; | |
687 | ||
688 | if (-1 == uname (&info)) | |
689 | { | |
690 | warning ("Unable to determine Linux version."); | |
691 | return -1; | |
692 | } | |
693 | ||
694 | pmajor = strtok (info.release, "."); | |
695 | pminor = strtok (NULL, "."); | |
696 | prelease = strtok (NULL, "."); | |
697 | ||
698 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
699 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
700 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
701 | ||
702 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
703 | } | |
704 | ||
705 | void | |
706 | _initialize_arm_linux_nat (void) | |
707 | { | |
708 | os_version = get_linux_version (&os_major, &os_minor, &os_release); | |
709 | } |