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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 |
ca6724c1 KB |
82 | individual thread (process) ID. get_thread_id () is used to |
83 | get the thread id if it's available, and the process id otherwise. */ | |
41c49b06 SB |
84 | |
85 | int | |
39f77062 | 86 | get_thread_id (ptid_t ptid) |
41c49b06 | 87 | { |
39f77062 KB |
88 | int tid = TIDGET (ptid); |
89 | if (0 == tid) | |
90 | tid = PIDGET (ptid); | |
41c49b06 SB |
91 | return tid; |
92 | } | |
39f77062 | 93 | #define GET_THREAD_ID(PTID) get_thread_id ((PTID)); |
41c49b06 | 94 | |
ed9a39eb | 95 | static void |
56624b0a | 96 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
97 | { |
98 | unsigned int mem[3]; | |
99 | ||
100 | mem[0] = fpa11->fpreg[fn].fSingle; | |
101 | mem[1] = 0; | |
102 | mem[2] = 0; | |
103 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
104 | } | |
105 | ||
106 | static void | |
56624b0a | 107 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
108 | { |
109 | unsigned int mem[3]; | |
110 | ||
111 | mem[0] = fpa11->fpreg[fn].fDouble[1]; | |
112 | mem[1] = fpa11->fpreg[fn].fDouble[0]; | |
113 | mem[2] = 0; | |
114 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
115 | } | |
116 | ||
117 | static void | |
56624b0a | 118 | fetch_nwfpe_none (unsigned int fn) |
ed9a39eb JM |
119 | { |
120 | unsigned int mem[3] = | |
121 | {0, 0, 0}; | |
122 | ||
123 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
124 | } | |
125 | ||
126 | static void | |
56624b0a | 127 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
128 | { |
129 | unsigned int mem[3]; | |
130 | ||
131 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ | |
132 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ | |
133 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ | |
134 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); | |
135 | } | |
136 | ||
41c49b06 SB |
137 | static void |
138 | fetch_nwfpe_register (int regno, FPA11 * fpa11) | |
139 | { | |
140 | int fn = regno - F0_REGNUM; | |
141 | ||
142 | switch (fpa11->fType[fn]) | |
143 | { | |
144 | case typeSingle: | |
145 | fetch_nwfpe_single (fn, fpa11); | |
146 | break; | |
147 | ||
148 | case typeDouble: | |
149 | fetch_nwfpe_double (fn, fpa11); | |
150 | break; | |
151 | ||
152 | case typeExtended: | |
153 | fetch_nwfpe_extended (fn, fpa11); | |
154 | break; | |
155 | ||
156 | default: | |
157 | fetch_nwfpe_none (fn); | |
158 | } | |
159 | } | |
160 | ||
ed9a39eb | 161 | static void |
56624b0a | 162 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
163 | { |
164 | unsigned int mem[3]; | |
165 | ||
166 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
167 | fpa11->fpreg[fn].fSingle = mem[0]; | |
168 | fpa11->fType[fn] = typeSingle; | |
169 | } | |
170 | ||
171 | static void | |
56624b0a | 172 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
173 | { |
174 | unsigned int mem[3]; | |
175 | ||
176 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
177 | fpa11->fpreg[fn].fDouble[1] = mem[0]; | |
178 | fpa11->fpreg[fn].fDouble[0] = mem[1]; | |
179 | fpa11->fType[fn] = typeDouble; | |
180 | } | |
181 | ||
182 | void | |
56624b0a | 183 | store_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
ed9a39eb JM |
184 | { |
185 | unsigned int mem[3]; | |
186 | ||
187 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); | |
188 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ | |
189 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ | |
190 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ | |
191 | fpa11->fType[fn] = typeDouble; | |
192 | } | |
193 | ||
41c49b06 SB |
194 | void |
195 | store_nwfpe_register (int regno, FPA11 * fpa11) | |
196 | { | |
197 | if (register_valid[regno]) | |
198 | { | |
199 | unsigned int fn = regno - F0_REGNUM; | |
200 | switch (fpa11->fType[fn]) | |
201 | { | |
202 | case typeSingle: | |
203 | store_nwfpe_single (fn, fpa11); | |
204 | break; | |
205 | ||
206 | case typeDouble: | |
207 | store_nwfpe_double (fn, fpa11); | |
208 | break; | |
209 | ||
210 | case typeExtended: | |
211 | store_nwfpe_extended (fn, fpa11); | |
212 | break; | |
213 | } | |
214 | } | |
215 | } | |
216 | ||
217 | ||
218 | /* Get the value of a particular register from the floating point | |
219 | state of the process and store it into registers[]. */ | |
220 | ||
221 | static void | |
222 | fetch_fpregister (int regno) | |
223 | { | |
224 | int ret, tid; | |
225 | FPA11 fp; | |
226 | ||
227 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 228 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
229 | |
230 | /* Read the floating point state. */ | |
231 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
232 | if (ret < 0) | |
233 | { | |
234 | warning ("Unable to fetch floating point register."); | |
235 | return; | |
236 | } | |
237 | ||
238 | /* Fetch fpsr. */ | |
239 | if (FPS_REGNUM == regno) | |
240 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
241 | ||
242 | /* Fetch the floating point register. */ | |
243 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
244 | { | |
245 | int fn = regno - F0_REGNUM; | |
246 | ||
247 | switch (fp.fType[fn]) | |
248 | { | |
249 | case typeSingle: | |
250 | fetch_nwfpe_single (fn, &fp); | |
251 | break; | |
252 | ||
253 | case typeDouble: | |
254 | fetch_nwfpe_double (fn, &fp); | |
255 | break; | |
256 | ||
257 | case typeExtended: | |
258 | fetch_nwfpe_extended (fn, &fp); | |
259 | break; | |
260 | ||
261 | default: | |
262 | fetch_nwfpe_none (fn); | |
263 | } | |
264 | } | |
265 | } | |
266 | ||
267 | /* Get the whole floating point state of the process and store it | |
268 | into registers[]. */ | |
ed9a39eb JM |
269 | |
270 | static void | |
271 | fetch_fpregs (void) | |
272 | { | |
41c49b06 | 273 | int ret, regno, tid; |
ed9a39eb JM |
274 | FPA11 fp; |
275 | ||
41c49b06 | 276 | /* Get the thread id for the ptrace call. */ |
39f77062 | 277 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 | 278 | |
ed9a39eb | 279 | /* Read the floating point state. */ |
41c49b06 | 280 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
281 | if (ret < 0) |
282 | { | |
41c49b06 | 283 | warning ("Unable to fetch the floating point registers."); |
ed9a39eb JM |
284 | return; |
285 | } | |
286 | ||
287 | /* Fetch fpsr. */ | |
288 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); | |
289 | ||
290 | /* Fetch the floating point registers. */ | |
291 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
292 | { | |
293 | int fn = regno - F0_REGNUM; | |
ed9a39eb JM |
294 | |
295 | switch (fp.fType[fn]) | |
296 | { | |
297 | case typeSingle: | |
56624b0a | 298 | fetch_nwfpe_single (fn, &fp); |
ed9a39eb JM |
299 | break; |
300 | ||
301 | case typeDouble: | |
56624b0a | 302 | fetch_nwfpe_double (fn, &fp); |
ed9a39eb JM |
303 | break; |
304 | ||
305 | case typeExtended: | |
56624b0a | 306 | fetch_nwfpe_extended (fn, &fp); |
ed9a39eb JM |
307 | break; |
308 | ||
309 | default: | |
56624b0a | 310 | fetch_nwfpe_none (fn); |
ed9a39eb JM |
311 | } |
312 | } | |
313 | } | |
314 | ||
41c49b06 SB |
315 | /* Save a particular register into the floating point state of the |
316 | process using the contents from registers[]. */ | |
317 | ||
318 | static void | |
319 | store_fpregister (int regno) | |
320 | { | |
321 | int ret, tid; | |
322 | FPA11 fp; | |
323 | ||
324 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 325 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
326 | |
327 | /* Read the floating point state. */ | |
328 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
329 | if (ret < 0) | |
330 | { | |
331 | warning ("Unable to fetch the floating point registers."); | |
332 | return; | |
333 | } | |
334 | ||
335 | /* Store fpsr. */ | |
336 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) | |
337 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
338 | ||
339 | /* Store the floating point register. */ | |
340 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
341 | { | |
342 | store_nwfpe_register (regno, &fp); | |
343 | } | |
344 | ||
345 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); | |
346 | if (ret < 0) | |
347 | { | |
348 | warning ("Unable to store floating point register."); | |
349 | return; | |
350 | } | |
351 | } | |
352 | ||
ed9a39eb JM |
353 | /* Save the whole floating point state of the process using |
354 | the contents from registers[]. */ | |
355 | ||
356 | static void | |
357 | store_fpregs (void) | |
358 | { | |
41c49b06 | 359 | int ret, regno, tid; |
ed9a39eb JM |
360 | FPA11 fp; |
361 | ||
41c49b06 | 362 | /* Get the thread id for the ptrace call. */ |
39f77062 | 363 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
364 | |
365 | /* Read the floating point state. */ | |
366 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); | |
367 | if (ret < 0) | |
368 | { | |
369 | warning ("Unable to fetch the floating point registers."); | |
370 | return; | |
371 | } | |
372 | ||
ed9a39eb JM |
373 | /* Store fpsr. */ |
374 | if (register_valid[FPS_REGNUM]) | |
375 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); | |
376 | ||
377 | /* Store the floating point registers. */ | |
378 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
379 | { | |
41c49b06 | 380 | fetch_nwfpe_register (regno, &fp); |
ed9a39eb JM |
381 | } |
382 | ||
41c49b06 | 383 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
ed9a39eb JM |
384 | if (ret < 0) |
385 | { | |
41c49b06 | 386 | warning ("Unable to store floating point registers."); |
ed9a39eb JM |
387 | return; |
388 | } | |
389 | } | |
390 | ||
41c49b06 SB |
391 | /* Fetch a general register of the process and store into |
392 | registers[]. */ | |
393 | ||
394 | static void | |
395 | fetch_register (int regno) | |
396 | { | |
397 | int ret, tid; | |
c2152441 | 398 | elf_gregset_t regs; |
41c49b06 SB |
399 | |
400 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 401 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
402 | |
403 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
404 | if (ret < 0) | |
405 | { | |
406 | warning ("Unable to fetch general register."); | |
407 | return; | |
408 | } | |
409 | ||
410 | if (regno >= A1_REGNUM && regno < PC_REGNUM) | |
c2152441 | 411 | supply_register (regno, (char *) ®s[regno]); |
41c49b06 SB |
412 | |
413 | if (PS_REGNUM == regno) | |
414 | { | |
415 | if (arm_apcs_32) | |
c2152441 | 416 | supply_register (PS_REGNUM, (char *) ®s[CPSR_REGNUM]); |
41c49b06 | 417 | else |
c2152441 | 418 | supply_register (PS_REGNUM, (char *) ®s[PC_REGNUM]); |
41c49b06 SB |
419 | } |
420 | ||
421 | if (PC_REGNUM == regno) | |
422 | { | |
c2152441 DJ |
423 | regs[PC_REGNUM] = ADDR_BITS_REMOVE (regs[PC_REGNUM]); |
424 | supply_register (PC_REGNUM, (char *) ®s[PC_REGNUM]); | |
41c49b06 SB |
425 | } |
426 | } | |
427 | ||
ed9a39eb JM |
428 | /* Fetch all general registers of the process and store into |
429 | registers[]. */ | |
430 | ||
431 | static void | |
432 | fetch_regs (void) | |
433 | { | |
41c49b06 | 434 | int ret, regno, tid; |
c2152441 | 435 | elf_gregset_t regs; |
ed9a39eb | 436 | |
41c49b06 | 437 | /* Get the thread id for the ptrace call. */ |
39f77062 | 438 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
439 | |
440 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
441 | if (ret < 0) |
442 | { | |
443 | warning ("Unable to fetch general registers."); | |
444 | return; | |
445 | } | |
446 | ||
447 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
c2152441 | 448 | supply_register (regno, (char *) ®s[regno]); |
ed9a39eb JM |
449 | |
450 | if (arm_apcs_32) | |
c2152441 | 451 | supply_register (PS_REGNUM, (char *) ®s[CPSR_REGNUM]); |
ed9a39eb | 452 | else |
c2152441 | 453 | supply_register (PS_REGNUM, (char *) ®s[PC_REGNUM]); |
ed9a39eb | 454 | |
c2152441 DJ |
455 | regs[PC_REGNUM] = ADDR_BITS_REMOVE (regs[PC_REGNUM]); |
456 | supply_register (PC_REGNUM, (char *) ®s[PC_REGNUM]); | |
ed9a39eb JM |
457 | } |
458 | ||
459 | /* Store all general registers of the process from the values in | |
460 | registers[]. */ | |
461 | ||
41c49b06 SB |
462 | static void |
463 | store_register (int regno) | |
464 | { | |
465 | int ret, tid; | |
c2152441 | 466 | elf_gregset_t regs; |
41c49b06 SB |
467 | |
468 | if (!register_valid[regno]) | |
469 | return; | |
470 | ||
471 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 472 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
473 | |
474 | /* Get the general registers from the process. */ | |
475 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
476 | if (ret < 0) | |
477 | { | |
478 | warning ("Unable to fetch general registers."); | |
479 | return; | |
480 | } | |
481 | ||
482 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
c2152441 | 483 | read_register_gen (regno, (char *) ®s[regno]); |
41c49b06 SB |
484 | |
485 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
486 | if (ret < 0) | |
487 | { | |
488 | warning ("Unable to store general register."); | |
489 | return; | |
490 | } | |
491 | } | |
492 | ||
ed9a39eb JM |
493 | static void |
494 | store_regs (void) | |
495 | { | |
41c49b06 | 496 | int ret, regno, tid; |
c2152441 | 497 | elf_gregset_t regs; |
ed9a39eb | 498 | |
41c49b06 | 499 | /* Get the thread id for the ptrace call. */ |
39f77062 | 500 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
501 | |
502 | /* Fetch the general registers. */ | |
503 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
504 | if (ret < 0) |
505 | { | |
506 | warning ("Unable to fetch general registers."); | |
507 | return; | |
508 | } | |
509 | ||
510 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) | |
511 | { | |
512 | if (register_valid[regno]) | |
c2152441 | 513 | read_register_gen (regno, (char *) ®s[regno]); |
ed9a39eb JM |
514 | } |
515 | ||
41c49b06 | 516 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
517 | |
518 | if (ret < 0) | |
519 | { | |
520 | warning ("Unable to store general registers."); | |
521 | return; | |
522 | } | |
523 | } | |
524 | ||
525 | /* Fetch registers from the child process. Fetch all registers if | |
526 | regno == -1, otherwise fetch all general registers or all floating | |
527 | point registers depending upon the value of regno. */ | |
528 | ||
529 | void | |
530 | fetch_inferior_registers (int regno) | |
531 | { | |
41c49b06 SB |
532 | if (-1 == regno) |
533 | { | |
534 | fetch_regs (); | |
535 | fetch_fpregs (); | |
536 | } | |
537 | else | |
538 | { | |
539 | if (regno < F0_REGNUM || regno > FPS_REGNUM) | |
540 | fetch_register (regno); | |
ed9a39eb | 541 | |
41c49b06 SB |
542 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
543 | fetch_fpregister (regno); | |
544 | } | |
ed9a39eb JM |
545 | } |
546 | ||
547 | /* Store registers back into the inferior. Store all registers if | |
548 | regno == -1, otherwise store all general registers or all floating | |
549 | point registers depending upon the value of regno. */ | |
550 | ||
551 | void | |
552 | store_inferior_registers (int regno) | |
553 | { | |
41c49b06 SB |
554 | if (-1 == regno) |
555 | { | |
556 | store_regs (); | |
557 | store_fpregs (); | |
558 | } | |
559 | else | |
560 | { | |
561 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) | |
562 | store_register (regno); | |
ed9a39eb | 563 | |
41c49b06 SB |
564 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
565 | store_fpregister (regno); | |
566 | } | |
ed9a39eb JM |
567 | } |
568 | ||
41c49b06 SB |
569 | /* Fill register regno (if it is a general-purpose register) in |
570 | *gregsetp with the appropriate value from GDB's register array. | |
571 | If regno is -1, do this for all registers. */ | |
572 | ||
573 | void | |
713f0374 | 574 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
41c49b06 SB |
575 | { |
576 | if (-1 == regno) | |
577 | { | |
578 | int regnum; | |
579 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) | |
17fd1ad9 | 580 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); |
41c49b06 SB |
581 | } |
582 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) | |
17fd1ad9 | 583 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); |
41c49b06 SB |
584 | |
585 | if (PS_REGNUM == regno || -1 == regno) | |
586 | { | |
17fd1ad9 DJ |
587 | if (arm_apcs_32) |
588 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
589 | else | |
590 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
41c49b06 | 591 | } |
41c49b06 SB |
592 | } |
593 | ||
594 | /* Fill GDB's register array with the general-purpose register values | |
595 | in *gregsetp. */ | |
596 | ||
597 | void | |
713f0374 | 598 | supply_gregset (gdb_gregset_t *gregsetp) |
41c49b06 SB |
599 | { |
600 | int regno, reg_pc; | |
601 | ||
602 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) | |
603 | supply_register (regno, (char *) &(*gregsetp)[regno]); | |
604 | ||
605 | if (arm_apcs_32) | |
606 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); | |
607 | else | |
608 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); | |
609 | ||
610 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); | |
611 | supply_register (PC_REGNUM, (char *) ®_pc); | |
612 | } | |
613 | ||
614 | /* Fill register regno (if it is a floating-point register) in | |
615 | *fpregsetp with the appropriate value from GDB's register array. | |
616 | If regno is -1, do this for all registers. */ | |
617 | ||
618 | void | |
713f0374 | 619 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
41c49b06 SB |
620 | { |
621 | FPA11 *fp = (FPA11 *) fpregsetp; | |
622 | ||
623 | if (-1 == regno) | |
624 | { | |
625 | int regnum; | |
626 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) | |
627 | store_nwfpe_register (regnum, fp); | |
628 | } | |
629 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
630 | { | |
631 | store_nwfpe_register (regno, fp); | |
632 | return; | |
633 | } | |
634 | ||
635 | /* Store fpsr. */ | |
17fd1ad9 DJ |
636 | if (FPS_REGNUM == regno || -1 == regno) |
637 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); | |
41c49b06 SB |
638 | } |
639 | ||
640 | /* Fill GDB's register array with the floating-point register values | |
641 | in *fpregsetp. */ | |
642 | ||
643 | void | |
713f0374 | 644 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
ed9a39eb | 645 | { |
41c49b06 SB |
646 | int regno; |
647 | FPA11 *fp = (FPA11 *) fpregsetp; | |
648 | ||
649 | /* Fetch fpsr. */ | |
650 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); | |
651 | ||
652 | /* Fetch the floating point registers. */ | |
653 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) | |
654 | { | |
655 | fetch_nwfpe_register (regno, fp); | |
656 | } | |
ed9a39eb JM |
657 | } |
658 | ||
659 | int | |
660 | arm_linux_kernel_u_size (void) | |
661 | { | |
662 | return (sizeof (struct user)); | |
663 | } | |
664 | ||
ed9a39eb JM |
665 | static unsigned int |
666 | get_linux_version (unsigned int *vmajor, | |
667 | unsigned int *vminor, | |
668 | unsigned int *vrelease) | |
669 | { | |
670 | struct utsname info; | |
671 | char *pmajor, *pminor, *prelease, *tail; | |
672 | ||
673 | if (-1 == uname (&info)) | |
674 | { | |
675 | warning ("Unable to determine Linux version."); | |
676 | return -1; | |
677 | } | |
678 | ||
679 | pmajor = strtok (info.release, "."); | |
680 | pminor = strtok (NULL, "."); | |
681 | prelease = strtok (NULL, "."); | |
682 | ||
683 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
684 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
685 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
686 | ||
687 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
688 | } | |
689 | ||
690 | void | |
691 | _initialize_arm_linux_nat (void) | |
692 | { | |
693 | os_version = get_linux_version (&os_major, &os_minor, &os_release); | |
694 | } |