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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 AC |
2 | |
3 | Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, | |
4 | 2001, 2002 Free Software Foundation, Inc. | |
32178cab MS |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
32178cab MS |
24 | #include "inferior.h" |
25 | #include "target.h" | |
26 | #include "gdbarch.h" | |
705152c5 | 27 | #include "gdbcmd.h" |
4e052eda | 28 | #include "regcache.h" |
61a0eb5b | 29 | #include "gdb_assert.h" |
b66d6d2e | 30 | #include "gdb_string.h" |
af030b9a | 31 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
32178cab MS |
32 | |
33 | /* | |
34 | * DATA STRUCTURE | |
35 | * | |
36 | * Here is the actual register cache. | |
37 | */ | |
38 | ||
3fadccb3 AC |
39 | /* Per-architecture object describing the layout of a register cache. |
40 | Computed once when the architecture is created */ | |
41 | ||
42 | struct gdbarch_data *regcache_descr_handle; | |
43 | ||
44 | struct regcache_descr | |
45 | { | |
46 | /* The architecture this descriptor belongs to. */ | |
47 | struct gdbarch *gdbarch; | |
48 | ||
49 | /* Is this a ``legacy'' register cache? Such caches reserve space | |
50 | for raw and pseudo registers and allow access to both. */ | |
51 | int legacy_p; | |
52 | ||
53 | /* The raw register cache. This should contain just [0 | |
54 | .. NUM_RAW_REGISTERS). However, for older targets, it contains | |
55 | space for the full [0 .. NUM_RAW_REGISTERS + | |
56 | NUM_PSEUDO_REGISTERS). */ | |
57 | int nr_raw_registers; | |
58 | long sizeof_raw_registers; | |
59 | long sizeof_raw_register_valid_p; | |
60 | ||
d138e37a AC |
61 | /* The cooked register space. Each cooked register in the range |
62 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
63 | register. The remaining [NR_RAW_REGISTERS | |
64 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo regiters) are mapped onto | |
65 | both raw registers and memory by the architecture methods | |
66 | gdbarch_register_read and gdbarch_register_write. */ | |
67 | int nr_cooked_registers; | |
68 | ||
69 | /* Offset and size (in 8 bit bytes), of reach register in the | |
70 | register cache. All registers (including those in the range | |
71 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
72 | Assigning all registers an offset makes it possible to keep | |
73 | legacy code, such as that found in read_register_bytes() and | |
74 | write_register_bytes() working. */ | |
3fadccb3 | 75 | long *register_offset; |
3fadccb3 | 76 | long *sizeof_register; |
3fadccb3 | 77 | |
d138e37a AC |
78 | /* Useful constant. Largest of all the registers. */ |
79 | long max_register_size; | |
3fadccb3 AC |
80 | }; |
81 | ||
82 | static void * | |
83 | init_legacy_regcache_descr (struct gdbarch *gdbarch) | |
84 | { | |
85 | int i; | |
86 | struct regcache_descr *descr; | |
87 | /* FIXME: cagney/2002-05-11: gdbarch_data() should take that | |
88 | ``gdbarch'' as a parameter. */ | |
89 | gdb_assert (gdbarch != NULL); | |
90 | ||
91 | descr = XMALLOC (struct regcache_descr); | |
92 | descr->gdbarch = gdbarch; | |
93 | descr->legacy_p = 1; | |
94 | ||
95 | /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers | |
96 | in the register buffer. Unfortunatly some architectures do. */ | |
d138e37a AC |
97 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
98 | descr->nr_raw_registers = descr->nr_cooked_registers; | |
99 | descr->sizeof_raw_register_valid_p = descr->nr_cooked_registers; | |
3fadccb3 AC |
100 | |
101 | /* FIXME: cagney/2002-05-11: Instead of using REGISTER_BYTE() this | |
102 | code should compute the offets et.al. at runtime. This currently | |
103 | isn't possible because some targets overlap register locations - | |
104 | see the mess in read_register_bytes() and write_register_bytes() | |
105 | registers. */ | |
d138e37a AC |
106 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
107 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 108 | descr->max_register_size = 0; |
d138e37a | 109 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
110 | { |
111 | descr->register_offset[i] = REGISTER_BYTE (i); | |
112 | descr->sizeof_register[i] = REGISTER_RAW_SIZE (i); | |
113 | if (descr->max_register_size < REGISTER_RAW_SIZE (i)) | |
114 | descr->max_register_size = REGISTER_RAW_SIZE (i); | |
115 | } | |
116 | ||
117 | /* Come up with the real size of the registers buffer. */ | |
118 | descr->sizeof_raw_registers = REGISTER_BYTES; /* OK use. */ | |
d138e37a | 119 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
120 | { |
121 | long regend; | |
122 | /* Keep extending the buffer so that there is always enough | |
123 | space for all registers. The comparison is necessary since | |
124 | legacy code is free to put registers in random places in the | |
125 | buffer separated by holes. Once REGISTER_BYTE() is killed | |
126 | this can be greatly simplified. */ | |
127 | /* FIXME: cagney/2001-12-04: This code shouldn't need to use | |
128 | REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the | |
129 | buffer out so that certain registers just happen to overlap. | |
130 | Ulgh! New targets use gdbarch's register read/write and | |
131 | entirely avoid this uglyness. */ | |
132 | regend = descr->register_offset[i] + descr->sizeof_register[i]; | |
133 | if (descr->sizeof_raw_registers < regend) | |
134 | descr->sizeof_raw_registers = regend; | |
135 | } | |
136 | return descr; | |
137 | } | |
138 | ||
139 | static void * | |
140 | init_regcache_descr (struct gdbarch *gdbarch) | |
141 | { | |
142 | int i; | |
143 | struct regcache_descr *descr; | |
144 | gdb_assert (gdbarch != NULL); | |
145 | ||
146 | /* If an old style architecture, construct the register cache | |
147 | description using all the register macros. */ | |
d8124050 AC |
148 | if (!gdbarch_pseudo_register_read_p (gdbarch) |
149 | && !gdbarch_pseudo_register_write_p (gdbarch)) | |
3fadccb3 AC |
150 | return init_legacy_regcache_descr (gdbarch); |
151 | ||
152 | descr = XMALLOC (struct regcache_descr); | |
153 | descr->gdbarch = gdbarch; | |
154 | descr->legacy_p = 0; | |
155 | ||
d138e37a AC |
156 | /* Total size of the register space. The raw registers are mapped |
157 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 158 | either mapped onto raw-registers or memory. */ |
d138e37a | 159 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 AC |
160 | |
161 | /* Construct a strictly RAW register cache. Don't allow pseudo's | |
162 | into the register cache. */ | |
163 | descr->nr_raw_registers = NUM_REGS; | |
53826de9 AC |
164 | |
165 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
166 | array. This pretects GDB from erant code that accesses elements | |
167 | of the global register_valid_p[] array in the range [NUM_REGS | |
168 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
169 | descr->sizeof_raw_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; | |
3fadccb3 AC |
170 | |
171 | /* Lay out the register cache. The pseud-registers are included in | |
172 | the layout even though their value isn't stored in the register | |
173 | cache. Some code, via read_register_bytes() access a register | |
174 | using an offset/length rather than a register number. | |
175 | ||
176 | NOTE: cagney/2002-05-22: Only REGISTER_VIRTUAL_TYPE() needs to be | |
177 | used when constructing the register cache. It is assumed that | |
178 | register raw size, virtual size and type length of the type are | |
179 | all the same. */ | |
180 | ||
181 | { | |
182 | long offset = 0; | |
d138e37a AC |
183 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
184 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 185 | descr->max_register_size = 0; |
d138e37a | 186 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
187 | { |
188 | descr->sizeof_register[i] = TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (i)); | |
189 | descr->register_offset[i] = offset; | |
190 | offset += descr->sizeof_register[i]; | |
191 | if (descr->max_register_size < descr->sizeof_register[i]) | |
192 | descr->max_register_size = descr->sizeof_register[i]; | |
193 | } | |
194 | /* Set the real size of the register cache buffer. */ | |
195 | /* FIXME: cagney/2002-05-22: Should only need to allocate space | |
196 | for the raw registers. Unfortunatly some code still accesses | |
197 | the register array directly using the global registers[]. | |
198 | Until that code has been purged, play safe and over allocating | |
199 | the register buffer. Ulgh! */ | |
200 | descr->sizeof_raw_registers = offset; | |
201 | /* = descr->register_offset[descr->nr_raw_registers]; */ | |
202 | } | |
203 | ||
204 | #if 0 | |
205 | /* Sanity check. Confirm that the assumptions about gdbarch are | |
206 | true. The REGCACHE_DESCR_HANDLE is set before doing the checks | |
207 | so that targets using the generic methods supplied by regcache | |
208 | don't go into infinite recursion trying to, again, create the | |
209 | regcache. */ | |
210 | set_gdbarch_data (gdbarch, regcache_descr_handle, descr); | |
d138e37a | 211 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
212 | { |
213 | gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i)); | |
214 | gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i)); | |
215 | gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i)); | |
216 | } | |
217 | /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */ | |
218 | #endif | |
219 | ||
220 | return descr; | |
221 | } | |
222 | ||
223 | static struct regcache_descr * | |
224 | regcache_descr (struct gdbarch *gdbarch) | |
225 | { | |
226 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
227 | } | |
228 | ||
229 | static void | |
230 | xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr) | |
231 | { | |
232 | struct regcache_descr *descr = ptr; | |
233 | if (descr == NULL) | |
234 | return; | |
235 | xfree (descr->register_offset); | |
236 | xfree (descr->sizeof_register); | |
237 | descr->register_offset = NULL; | |
238 | descr->sizeof_register = NULL; | |
239 | xfree (descr); | |
240 | } | |
241 | ||
242 | /* The register cache for storing raw register values. */ | |
243 | ||
244 | struct regcache | |
245 | { | |
246 | struct regcache_descr *descr; | |
247 | char *raw_registers; | |
248 | char *raw_register_valid_p; | |
249 | /* If a value isn't in the cache should the corresponding target be | |
250 | queried for a value. */ | |
251 | int passthrough_p; | |
252 | }; | |
253 | ||
254 | struct regcache * | |
255 | regcache_xmalloc (struct gdbarch *gdbarch) | |
256 | { | |
257 | struct regcache_descr *descr; | |
258 | struct regcache *regcache; | |
259 | gdb_assert (gdbarch != NULL); | |
260 | descr = regcache_descr (gdbarch); | |
261 | regcache = XMALLOC (struct regcache); | |
262 | regcache->descr = descr; | |
263 | regcache->raw_registers | |
264 | = XCALLOC (descr->sizeof_raw_registers, char); | |
265 | regcache->raw_register_valid_p | |
266 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); | |
267 | regcache->passthrough_p = 0; | |
268 | return regcache; | |
269 | } | |
270 | ||
271 | void | |
272 | regcache_xfree (struct regcache *regcache) | |
273 | { | |
274 | if (regcache == NULL) | |
275 | return; | |
276 | xfree (regcache->raw_registers); | |
277 | xfree (regcache->raw_register_valid_p); | |
278 | xfree (regcache); | |
279 | } | |
280 | ||
36160dc4 AC |
281 | void |
282 | do_regcache_xfree (void *data) | |
283 | { | |
284 | regcache_xfree (data); | |
285 | } | |
286 | ||
287 | struct cleanup * | |
288 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
289 | { | |
290 | return make_cleanup (do_regcache_xfree, regcache); | |
291 | } | |
292 | ||
3fadccb3 AC |
293 | void |
294 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
295 | { | |
296 | int i; | |
297 | char *buf; | |
298 | gdb_assert (src != NULL && dst != NULL); | |
299 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
300 | gdb_assert (src != dst); | |
301 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
302 | It keeps the existing code working where things rely on going | |
303 | through to the register cache. */ | |
304 | if (src == current_regcache && src->descr->legacy_p) | |
305 | { | |
306 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
307 | untangle fetch. */ | |
308 | read_register_bytes (0, dst->raw_registers, REGISTER_BYTES); | |
309 | return; | |
310 | } | |
311 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
312 | It keeps the existing code working where things rely on going | |
313 | through to the register cache. */ | |
314 | if (dst == current_regcache && dst->descr->legacy_p) | |
315 | { | |
316 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
317 | untangle fetch. */ | |
318 | write_register_bytes (0, src->raw_registers, REGISTER_BYTES); | |
319 | return; | |
320 | } | |
321 | buf = alloca (src->descr->max_register_size); | |
322 | for (i = 0; i < src->descr->nr_raw_registers; i++) | |
323 | { | |
324 | /* Should we worry about the valid bit here? */ | |
0818c12a AC |
325 | regcache_raw_read (src, i, buf); |
326 | regcache_raw_write (dst, i, buf); | |
3fadccb3 AC |
327 | } |
328 | } | |
329 | ||
330 | void | |
331 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
332 | { | |
333 | int i; | |
334 | gdb_assert (src != NULL && dst != NULL); | |
335 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
336 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
337 | move of data into the current_regcache(). Doing this would be | |
338 | silly - it would mean that valid_p would be completly invalid. */ | |
339 | gdb_assert (dst != current_regcache); | |
340 | memcpy (dst->raw_registers, src->raw_registers, | |
341 | dst->descr->sizeof_raw_registers); | |
342 | memcpy (dst->raw_register_valid_p, src->raw_register_valid_p, | |
343 | dst->descr->sizeof_raw_register_valid_p); | |
344 | } | |
345 | ||
346 | struct regcache * | |
347 | regcache_dup (struct regcache *src) | |
348 | { | |
349 | struct regcache *newbuf; | |
350 | gdb_assert (current_regcache != NULL); | |
351 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
352 | regcache_cpy (newbuf, src); | |
353 | return newbuf; | |
354 | } | |
355 | ||
356 | struct regcache * | |
357 | regcache_dup_no_passthrough (struct regcache *src) | |
358 | { | |
359 | struct regcache *newbuf; | |
360 | gdb_assert (current_regcache != NULL); | |
361 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
362 | regcache_cpy_no_passthrough (newbuf, src); | |
363 | return newbuf; | |
364 | } | |
365 | ||
366 | int | |
367 | regcache_valid_p (struct regcache *regcache, int regnum) | |
368 | { | |
369 | gdb_assert (regcache != NULL); | |
370 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
371 | return regcache->raw_register_valid_p[regnum]; | |
372 | } | |
373 | ||
3fadccb3 AC |
374 | char * |
375 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
376 | { | |
377 | return regcache->raw_registers; | |
378 | } | |
379 | ||
380 | char * | |
381 | deprecated_grub_regcache_for_register_valid (struct regcache *regcache) | |
382 | { | |
383 | return regcache->raw_register_valid_p; | |
384 | } | |
385 | ||
386 | /* Global structure containing the current regcache. */ | |
387 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
388 | register_valid[] currently point into this structure. */ | |
389 | struct regcache *current_regcache; | |
390 | ||
5ebd2499 | 391 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
392 | recording if the register values have been changed (eg. by the |
393 | user). Therefore all registers must be written back to the | |
394 | target when appropriate. */ | |
395 | ||
396 | /* REGISTERS contains the cached register values (in target byte order). */ | |
397 | ||
398 | char *registers; | |
399 | ||
400 | /* REGISTER_VALID is 0 if the register needs to be fetched, | |
401 | 1 if it has been fetched, and | |
402 | -1 if the register value was not available. | |
c97dcfc7 AC |
403 | |
404 | "Not available" indicates that the target is not not able to supply | |
405 | the register at this state. The register may become available at a | |
406 | later time (after the next resume). This often occures when GDB is | |
407 | manipulating a target that contains only a snapshot of the entire | |
408 | system being debugged - some of the registers in such a system may | |
409 | not have been saved. */ | |
32178cab MS |
410 | |
411 | signed char *register_valid; | |
412 | ||
39f77062 | 413 | /* The thread/process associated with the current set of registers. */ |
32178cab | 414 | |
39f77062 | 415 | static ptid_t registers_ptid; |
32178cab MS |
416 | |
417 | /* | |
418 | * FUNCTIONS: | |
419 | */ | |
420 | ||
421 | /* REGISTER_CACHED() | |
422 | ||
423 | Returns 0 if the value is not in the cache (needs fetch). | |
424 | >0 if the value is in the cache. | |
425 | <0 if the value is permanently unavailable (don't ask again). */ | |
426 | ||
427 | int | |
428 | register_cached (int regnum) | |
429 | { | |
430 | return register_valid[regnum]; | |
431 | } | |
432 | ||
7302a204 ND |
433 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
434 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
435 | ||
436 | void | |
437 | set_register_cached (int regnum, int state) | |
438 | { | |
53826de9 AC |
439 | gdb_assert (regnum >= 0); |
440 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
441 | current_regcache->raw_register_valid_p[regnum] = state; | |
7302a204 ND |
442 | } |
443 | ||
2dc4e391 DT |
444 | /* REGISTER_CHANGED |
445 | ||
446 | invalidate a single register REGNUM in the cache */ | |
447 | void | |
448 | register_changed (int regnum) | |
449 | { | |
7302a204 ND |
450 | set_register_cached (regnum, 0); |
451 | } | |
452 | ||
453 | /* If REGNUM >= 0, return a pointer to register REGNUM's cache buffer area, | |
454 | else return a pointer to the start of the cache buffer. */ | |
455 | ||
193cb69f | 456 | static char * |
3fadccb3 | 457 | register_buffer (struct regcache *regcache, int regnum) |
7302a204 | 458 | { |
3fadccb3 | 459 | return regcache->raw_registers + regcache->descr->register_offset[regnum]; |
7302a204 ND |
460 | } |
461 | ||
462 | /* Return whether register REGNUM is a real register. */ | |
463 | ||
464 | static int | |
465 | real_register (int regnum) | |
466 | { | |
467 | return regnum >= 0 && regnum < NUM_REGS; | |
468 | } | |
469 | ||
32178cab MS |
470 | /* Low level examining and depositing of registers. |
471 | ||
472 | The caller is responsible for making sure that the inferior is | |
473 | stopped before calling the fetching routines, or it will get | |
474 | garbage. (a change from GDB version 3, in which the caller got the | |
475 | value from the last stop). */ | |
476 | ||
477 | /* REGISTERS_CHANGED () | |
478 | ||
479 | Indicate that registers may have changed, so invalidate the cache. */ | |
480 | ||
481 | void | |
482 | registers_changed (void) | |
483 | { | |
484 | int i; | |
32178cab | 485 | |
39f77062 | 486 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
487 | |
488 | /* Force cleanup of any alloca areas if using C alloca instead of | |
489 | a builtin alloca. This particular call is used to clean up | |
490 | areas allocated by low level target code which may build up | |
491 | during lengthy interactions between gdb and the target before | |
492 | gdb gives control to the user (ie watchpoints). */ | |
493 | alloca (0); | |
494 | ||
53826de9 | 495 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 496 | set_register_cached (i, 0); |
32178cab MS |
497 | |
498 | if (registers_changed_hook) | |
499 | registers_changed_hook (); | |
500 | } | |
501 | ||
502 | /* REGISTERS_FETCHED () | |
503 | ||
504 | Indicate that all registers have been fetched, so mark them all valid. */ | |
505 | ||
31e9866e AC |
506 | /* NOTE: cagney/2001-12-04: This function does not set valid on the |
507 | pseudo-register range since pseudo registers are always supplied | |
508 | using supply_register(). */ | |
509 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target | |
510 | code was blatting the registers[] array and then calling this. | |
511 | Since targets should only be using supply_register() the need for | |
512 | this function/hack is eliminated. */ | |
32178cab MS |
513 | |
514 | void | |
515 | registers_fetched (void) | |
516 | { | |
517 | int i; | |
32178cab | 518 | |
a728f042 | 519 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 520 | set_register_cached (i, 1); |
fcdc5976 | 521 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 522 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
523 | } |
524 | ||
525 | /* read_register_bytes and write_register_bytes are generally a *BAD* | |
526 | idea. They are inefficient because they need to check for partial | |
527 | updates, which can only be done by scanning through all of the | |
528 | registers and seeing if the bytes that are being read/written fall | |
529 | inside of an invalid register. [The main reason this is necessary | |
530 | is that register sizes can vary, so a simple index won't suffice.] | |
531 | It is far better to call read_register_gen and write_register_gen | |
532 | if you want to get at the raw register contents, as it only takes a | |
5ebd2499 | 533 | regnum as an argument, and therefore can't do a partial register |
32178cab MS |
534 | update. |
535 | ||
536 | Prior to the recent fixes to check for partial updates, both read | |
537 | and write_register_bytes always checked to see if any registers | |
538 | were stale, and then called target_fetch_registers (-1) to update | |
539 | the whole set. This caused really slowed things down for remote | |
540 | targets. */ | |
541 | ||
542 | /* Copy INLEN bytes of consecutive data from registers | |
543 | starting with the INREGBYTE'th byte of register data | |
544 | into memory at MYADDR. */ | |
545 | ||
546 | void | |
61a0eb5b | 547 | read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 548 | { |
61a0eb5b | 549 | int in_end = in_start + in_len; |
5ebd2499 | 550 | int regnum; |
61a0eb5b | 551 | char *reg_buf = alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
552 | |
553 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
554 | update just those registers. */ | |
555 | ||
5ebd2499 | 556 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 557 | { |
61a0eb5b AC |
558 | int reg_start; |
559 | int reg_end; | |
560 | int reg_len; | |
561 | int start; | |
562 | int end; | |
563 | int byte; | |
32178cab | 564 | |
61a0eb5b AC |
565 | reg_start = REGISTER_BYTE (regnum); |
566 | reg_len = REGISTER_RAW_SIZE (regnum); | |
567 | reg_end = reg_start + reg_len; | |
32178cab | 568 | |
61a0eb5b | 569 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 570 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
571 | continue; |
572 | ||
275f450c AC |
573 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
574 | /* Force the cache to fetch the entire register. */ | |
575 | read_register_gen (regnum, reg_buf); | |
576 | else | |
577 | /* Legacy note: even though this register is ``invalid'' we | |
578 | still need to return something. It would appear that some | |
579 | code relies on apparent gaps in the register array also | |
580 | being returned. */ | |
581 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
582 | the entire register read/write flow of control. Must | |
583 | resist temptation to return 0xdeadbeef. */ | |
584 | memcpy (reg_buf, registers + reg_start, reg_len); | |
32178cab | 585 | |
61a0eb5b AC |
586 | /* Legacy note: This function, for some reason, allows a NULL |
587 | input buffer. If the buffer is NULL, the registers are still | |
588 | fetched, just the final transfer is skipped. */ | |
589 | if (in_buf == NULL) | |
590 | continue; | |
591 | ||
592 | /* start = max (reg_start, in_start) */ | |
593 | if (reg_start > in_start) | |
594 | start = reg_start; | |
595 | else | |
596 | start = in_start; | |
597 | ||
598 | /* end = min (reg_end, in_end) */ | |
599 | if (reg_end < in_end) | |
600 | end = reg_end; | |
601 | else | |
602 | end = in_end; | |
603 | ||
604 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
605 | for (byte = start; byte < end; byte++) | |
165cd47f | 606 | { |
61a0eb5b | 607 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 608 | } |
32178cab | 609 | } |
32178cab MS |
610 | } |
611 | ||
5ebd2499 ND |
612 | /* Read register REGNUM into memory at MYADDR, which must be large |
613 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
614 | register is known to be the size of a CORE_ADDR or smaller, |
615 | read_register can be used instead. */ | |
616 | ||
61a0eb5b AC |
617 | static void |
618 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 619 | { |
61a0eb5b | 620 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 621 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
622 | { |
623 | registers_changed (); | |
39f77062 | 624 | registers_ptid = inferior_ptid; |
32178cab MS |
625 | } |
626 | ||
7302a204 | 627 | if (!register_cached (regnum)) |
5c27f28a | 628 | target_fetch_registers (regnum); |
7302a204 | 629 | |
3fadccb3 | 630 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
5ebd2499 | 631 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
632 | } |
633 | ||
61a0eb5b | 634 | void |
1aaa5f99 | 635 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 636 | { |
3fadccb3 AC |
637 | gdb_assert (regcache != NULL && buf != NULL); |
638 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
639 | if (regcache->descr->legacy_p | |
640 | && regcache->passthrough_p) | |
641 | { | |
642 | gdb_assert (regcache == current_regcache); | |
643 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
644 | silently and very indirectly updates the regcache's regcache | |
645 | via the global register_valid[]. */ | |
646 | legacy_read_register_gen (regnum, buf); | |
647 | return; | |
648 | } | |
649 | /* Make certain that the register cache is up-to-date with respect | |
650 | to the current thread. This switching shouldn't be necessary | |
651 | only there is still only one target side register cache. Sigh! | |
652 | On the bright side, at least there is a regcache object. */ | |
653 | if (regcache->passthrough_p) | |
654 | { | |
655 | gdb_assert (regcache == current_regcache); | |
656 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
657 | { | |
658 | registers_changed (); | |
659 | registers_ptid = inferior_ptid; | |
660 | } | |
661 | if (!register_cached (regnum)) | |
5c27f28a | 662 | target_fetch_registers (regnum); |
3fadccb3 AC |
663 | } |
664 | /* Copy the value directly into the register cache. */ | |
665 | memcpy (buf, (regcache->raw_registers | |
666 | + regcache->descr->register_offset[regnum]), | |
667 | regcache->descr->sizeof_register[regnum]); | |
61a0eb5b AC |
668 | } |
669 | ||
28fc6740 AC |
670 | void |
671 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
672 | { | |
673 | char *buf; | |
674 | gdb_assert (regcache != NULL); | |
675 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
676 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
677 | regcache_raw_read (regcache, regnum, buf); | |
678 | (*val) = extract_signed_integer (buf, | |
679 | regcache->descr->sizeof_register[regnum]); | |
680 | } | |
681 | ||
682 | void | |
683 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
684 | ULONGEST *val) | |
685 | { | |
686 | char *buf; | |
687 | gdb_assert (regcache != NULL); | |
688 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
689 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
690 | regcache_raw_read (regcache, regnum, buf); | |
691 | (*val) = extract_unsigned_integer (buf, | |
692 | regcache->descr->sizeof_register[regnum]); | |
693 | } | |
694 | ||
61a0eb5b AC |
695 | void |
696 | read_register_gen (int regnum, char *buf) | |
697 | { | |
3fadccb3 AC |
698 | gdb_assert (current_regcache != NULL); |
699 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
700 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
701 | { |
702 | legacy_read_register_gen (regnum, buf); | |
703 | return; | |
704 | } | |
68365089 AC |
705 | regcache_cooked_read (current_regcache, regnum, buf); |
706 | } | |
707 | ||
708 | void | |
29e1842b | 709 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 710 | { |
d138e37a | 711 | gdb_assert (regnum >= 0); |
68365089 AC |
712 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
713 | if (regnum < regcache->descr->nr_raw_registers) | |
714 | regcache_raw_read (regcache, regnum, buf); | |
d138e37a | 715 | else |
68365089 AC |
716 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
717 | regnum, buf); | |
61a0eb5b AC |
718 | } |
719 | ||
a378f419 AC |
720 | void |
721 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
722 | LONGEST *val) | |
723 | { | |
724 | char *buf; | |
725 | gdb_assert (regcache != NULL); | |
726 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
727 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
728 | regcache_cooked_read (regcache, regnum, buf); | |
729 | (*val) = extract_signed_integer (buf, | |
730 | regcache->descr->sizeof_register[regnum]); | |
731 | } | |
732 | ||
733 | void | |
734 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
735 | ULONGEST *val) | |
736 | { | |
737 | char *buf; | |
738 | gdb_assert (regcache != NULL); | |
739 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
740 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
741 | regcache_cooked_read (regcache, regnum, buf); | |
742 | (*val) = extract_unsigned_integer (buf, | |
743 | regcache->descr->sizeof_register[regnum]); | |
744 | } | |
745 | ||
5ebd2499 ND |
746 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
747 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 748 | |
61a0eb5b | 749 | static void |
1aaa5f99 | 750 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
751 | { |
752 | int size; | |
61a0eb5b | 753 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
754 | |
755 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
756 | change the registers array if something writes to this register. */ | |
5ebd2499 | 757 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
758 | return; |
759 | ||
39f77062 | 760 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
761 | { |
762 | registers_changed (); | |
39f77062 | 763 | registers_ptid = inferior_ptid; |
32178cab MS |
764 | } |
765 | ||
5ebd2499 | 766 | size = REGISTER_RAW_SIZE (regnum); |
32178cab | 767 | |
7302a204 | 768 | if (real_register (regnum)) |
1297a2f0 MS |
769 | { |
770 | /* If we have a valid copy of the register, and new value == old | |
771 | value, then don't bother doing the actual store. */ | |
772 | if (register_cached (regnum) | |
3fadccb3 AC |
773 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
774 | == 0)) | |
1297a2f0 MS |
775 | return; |
776 | else | |
777 | target_prepare_to_store (); | |
778 | } | |
32178cab | 779 | |
3fadccb3 | 780 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 781 | |
7302a204 | 782 | set_register_cached (regnum, 1); |
5c27f28a | 783 | target_store_registers (regnum); |
32178cab MS |
784 | } |
785 | ||
61a0eb5b | 786 | void |
1aaa5f99 | 787 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 788 | { |
3fadccb3 AC |
789 | gdb_assert (regcache != NULL && buf != NULL); |
790 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
791 | ||
792 | if (regcache->passthrough_p | |
793 | && regcache->descr->legacy_p) | |
794 | { | |
795 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
796 | silently and very indirectly updates the regcache's buffers | |
797 | via the globals register_valid[] and registers[]. */ | |
798 | gdb_assert (regcache == current_regcache); | |
799 | legacy_write_register_gen (regnum, buf); | |
800 | return; | |
801 | } | |
802 | ||
803 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
804 | change the registers array if something writes to this register. */ | |
805 | if (CANNOT_STORE_REGISTER (regnum)) | |
806 | return; | |
807 | ||
808 | /* Handle the simple case first -> not write through so just store | |
809 | value in cache. */ | |
810 | if (!regcache->passthrough_p) | |
811 | { | |
812 | memcpy ((regcache->raw_registers | |
813 | + regcache->descr->register_offset[regnum]), buf, | |
814 | regcache->descr->sizeof_register[regnum]); | |
815 | regcache->raw_register_valid_p[regnum] = 1; | |
816 | return; | |
817 | } | |
818 | ||
819 | /* Make certain that the correct cache is selected. */ | |
820 | gdb_assert (regcache == current_regcache); | |
821 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
822 | { | |
823 | registers_changed (); | |
824 | registers_ptid = inferior_ptid; | |
825 | } | |
826 | ||
827 | /* If we have a valid copy of the register, and new value == old | |
828 | value, then don't bother doing the actual store. */ | |
829 | if (regcache_valid_p (regcache, regnum) | |
830 | && (memcmp (register_buffer (regcache, regnum), buf, | |
831 | regcache->descr->sizeof_register[regnum]) == 0)) | |
832 | return; | |
833 | ||
834 | target_prepare_to_store (); | |
835 | memcpy (register_buffer (regcache, regnum), buf, | |
836 | regcache->descr->sizeof_register[regnum]); | |
837 | regcache->raw_register_valid_p[regnum] = 1; | |
5c27f28a | 838 | target_store_registers (regnum); |
61a0eb5b AC |
839 | } |
840 | ||
841 | void | |
842 | write_register_gen (int regnum, char *buf) | |
843 | { | |
3fadccb3 AC |
844 | gdb_assert (current_regcache != NULL); |
845 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
846 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
847 | { |
848 | legacy_write_register_gen (regnum, buf); | |
849 | return; | |
850 | } | |
68365089 AC |
851 | regcache_cooked_write (current_regcache, regnum, buf); |
852 | } | |
853 | ||
854 | void | |
29e1842b | 855 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 856 | { |
d138e37a | 857 | gdb_assert (regnum >= 0); |
68365089 AC |
858 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
859 | if (regnum < regcache->descr->nr_raw_registers) | |
860 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 861 | else |
68365089 | 862 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 863 | regnum, buf); |
61a0eb5b AC |
864 | } |
865 | ||
32178cab MS |
866 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
867 | into registers starting with the MYREGSTART'th byte of register data. */ | |
868 | ||
869 | void | |
870 | write_register_bytes (int myregstart, char *myaddr, int inlen) | |
871 | { | |
872 | int myregend = myregstart + inlen; | |
5ebd2499 | 873 | int regnum; |
32178cab MS |
874 | |
875 | target_prepare_to_store (); | |
876 | ||
877 | /* Scan through the registers updating any that are covered by the | |
878 | range myregstart<=>myregend using write_register_gen, which does | |
879 | nice things like handling threads, and avoiding updates when the | |
880 | new and old contents are the same. */ | |
881 | ||
5ebd2499 | 882 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
883 | { |
884 | int regstart, regend; | |
885 | ||
5ebd2499 ND |
886 | regstart = REGISTER_BYTE (regnum); |
887 | regend = regstart + REGISTER_RAW_SIZE (regnum); | |
32178cab MS |
888 | |
889 | /* Is this register completely outside the range the user is writing? */ | |
890 | if (myregend <= regstart || regend <= myregstart) | |
891 | /* do nothing */ ; | |
892 | ||
893 | /* Is this register completely within the range the user is writing? */ | |
894 | else if (myregstart <= regstart && regend <= myregend) | |
5ebd2499 | 895 | write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
896 | |
897 | /* The register partially overlaps the range being written. */ | |
898 | else | |
899 | { | |
e6cbd02a | 900 | char *regbuf = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
901 | /* What's the overlap between this register's bytes and |
902 | those the caller wants to write? */ | |
903 | int overlapstart = max (regstart, myregstart); | |
904 | int overlapend = min (regend, myregend); | |
905 | ||
906 | /* We may be doing a partial update of an invalid register. | |
907 | Update it from the target before scribbling on it. */ | |
5ebd2499 | 908 | read_register_gen (regnum, regbuf); |
32178cab MS |
909 | |
910 | memcpy (registers + overlapstart, | |
911 | myaddr + (overlapstart - myregstart), | |
912 | overlapend - overlapstart); | |
913 | ||
5c27f28a | 914 | target_store_registers (regnum); |
32178cab MS |
915 | } |
916 | } | |
917 | } | |
918 | ||
06c0b04e AC |
919 | /* Perform a partial register transfer using a read, modify, write |
920 | operation. */ | |
921 | ||
922 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
923 | void *buf); | |
924 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
925 | const void *buf); | |
926 | ||
927 | void | |
928 | regcache_xfer_part (struct regcache *regcache, int regnum, | |
929 | int offset, int len, void *in, const void *out, | |
930 | regcache_read_ftype *read, regcache_write_ftype *write) | |
931 | { | |
932 | struct regcache_descr *descr = regcache->descr; | |
933 | bfd_byte *reg = alloca (descr->max_register_size); | |
934 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); | |
935 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
936 | /* Something to do? */ | |
937 | if (offset + len == 0) | |
938 | return; | |
939 | /* Read (when needed) ... */ | |
940 | if (in != NULL | |
941 | || offset > 0 | |
942 | || offset + len < descr->sizeof_register[regnum]) | |
943 | { | |
944 | gdb_assert (read != NULL); | |
945 | read (regcache, regnum, reg); | |
946 | } | |
947 | /* ... modify ... */ | |
948 | if (in != NULL) | |
949 | memcpy (in, reg + offset, len); | |
950 | if (out != NULL) | |
951 | memcpy (reg + offset, out, len); | |
952 | /* ... write (when needed). */ | |
953 | if (out != NULL) | |
954 | { | |
955 | gdb_assert (write != NULL); | |
956 | write (regcache, regnum, reg); | |
957 | } | |
958 | } | |
959 | ||
960 | void | |
961 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
962 | int offset, int len, void *buf) | |
963 | { | |
964 | struct regcache_descr *descr = regcache->descr; | |
965 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
966 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
967 | regcache_raw_read, regcache_raw_write); | |
968 | } | |
969 | ||
970 | void | |
971 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
972 | int offset, int len, const void *buf) | |
973 | { | |
974 | struct regcache_descr *descr = regcache->descr; | |
975 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
976 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
977 | regcache_raw_read, regcache_raw_write); | |
978 | } | |
979 | ||
980 | void | |
981 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
982 | int offset, int len, void *buf) | |
983 | { | |
984 | struct regcache_descr *descr = regcache->descr; | |
985 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
986 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
987 | regcache_cooked_read, regcache_cooked_write); | |
988 | } | |
989 | ||
990 | void | |
991 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
992 | int offset, int len, const void *buf) | |
993 | { | |
994 | struct regcache_descr *descr = regcache->descr; | |
995 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
996 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
997 | regcache_cooked_read, regcache_cooked_write); | |
998 | } | |
32178cab | 999 | |
5ebd2499 | 1000 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1001 | |
173155e8 | 1002 | ULONGEST |
5ebd2499 | 1003 | read_register (int regnum) |
32178cab | 1004 | { |
61a0eb5b AC |
1005 | char *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1006 | read_register_gen (regnum, buf); | |
1007 | return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
32178cab MS |
1008 | } |
1009 | ||
173155e8 | 1010 | ULONGEST |
39f77062 | 1011 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1012 | { |
39f77062 | 1013 | ptid_t save_ptid; |
32178cab MS |
1014 | int save_pid; |
1015 | CORE_ADDR retval; | |
1016 | ||
39f77062 | 1017 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1018 | return read_register (regnum); |
32178cab | 1019 | |
39f77062 | 1020 | save_ptid = inferior_ptid; |
32178cab | 1021 | |
39f77062 | 1022 | inferior_ptid = ptid; |
32178cab | 1023 | |
5ebd2499 | 1024 | retval = read_register (regnum); |
32178cab | 1025 | |
39f77062 | 1026 | inferior_ptid = save_ptid; |
32178cab MS |
1027 | |
1028 | return retval; | |
1029 | } | |
1030 | ||
5ebd2499 | 1031 | /* Return the contents of register REGNUM as a signed integer. */ |
173155e8 AC |
1032 | |
1033 | LONGEST | |
5ebd2499 | 1034 | read_signed_register (int regnum) |
173155e8 | 1035 | { |
61a0eb5b AC |
1036 | void *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1037 | read_register_gen (regnum, buf); | |
1038 | return (extract_signed_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
173155e8 AC |
1039 | } |
1040 | ||
1041 | LONGEST | |
39f77062 | 1042 | read_signed_register_pid (int regnum, ptid_t ptid) |
173155e8 | 1043 | { |
39f77062 | 1044 | ptid_t save_ptid; |
173155e8 AC |
1045 | LONGEST retval; |
1046 | ||
39f77062 | 1047 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1048 | return read_signed_register (regnum); |
173155e8 | 1049 | |
39f77062 | 1050 | save_ptid = inferior_ptid; |
173155e8 | 1051 | |
39f77062 | 1052 | inferior_ptid = ptid; |
173155e8 | 1053 | |
5ebd2499 | 1054 | retval = read_signed_register (regnum); |
173155e8 | 1055 | |
39f77062 | 1056 | inferior_ptid = save_ptid; |
173155e8 AC |
1057 | |
1058 | return retval; | |
1059 | } | |
1060 | ||
5ebd2499 | 1061 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
1062 | |
1063 | void | |
5ebd2499 | 1064 | write_register (int regnum, LONGEST val) |
32178cab | 1065 | { |
61a0eb5b | 1066 | void *buf; |
32178cab | 1067 | int size; |
5ebd2499 | 1068 | size = REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1069 | buf = alloca (size); |
1070 | store_signed_integer (buf, size, (LONGEST) val); | |
61a0eb5b | 1071 | write_register_gen (regnum, buf); |
32178cab MS |
1072 | } |
1073 | ||
1074 | void | |
39f77062 | 1075 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 1076 | { |
39f77062 | 1077 | ptid_t save_ptid; |
32178cab | 1078 | |
39f77062 | 1079 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 1080 | { |
5ebd2499 | 1081 | write_register (regnum, val); |
32178cab MS |
1082 | return; |
1083 | } | |
1084 | ||
39f77062 | 1085 | save_ptid = inferior_ptid; |
32178cab | 1086 | |
39f77062 | 1087 | inferior_ptid = ptid; |
32178cab | 1088 | |
5ebd2499 | 1089 | write_register (regnum, val); |
32178cab | 1090 | |
39f77062 | 1091 | inferior_ptid = save_ptid; |
32178cab MS |
1092 | } |
1093 | ||
1094 | /* SUPPLY_REGISTER() | |
1095 | ||
5ebd2499 | 1096 | Record that register REGNUM contains VAL. This is used when the |
32178cab MS |
1097 | value is obtained from the inferior or core dump, so there is no |
1098 | need to store the value there. | |
1099 | ||
1100 | If VAL is a NULL pointer, then it's probably an unsupported register. | |
5ebd2499 | 1101 | We just set its value to all zeros. We might want to record this |
32178cab MS |
1102 | fact, and report it to the users of read_register and friends. */ |
1103 | ||
1104 | void | |
1aaa5f99 | 1105 | supply_register (int regnum, const void *val) |
32178cab MS |
1106 | { |
1107 | #if 1 | |
39f77062 | 1108 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
1109 | { |
1110 | registers_changed (); | |
39f77062 | 1111 | registers_ptid = inferior_ptid; |
32178cab MS |
1112 | } |
1113 | #endif | |
1114 | ||
7302a204 | 1115 | set_register_cached (regnum, 1); |
32178cab | 1116 | if (val) |
3fadccb3 | 1117 | memcpy (register_buffer (current_regcache, regnum), val, |
5ebd2499 | 1118 | REGISTER_RAW_SIZE (regnum)); |
32178cab | 1119 | else |
3fadccb3 | 1120 | memset (register_buffer (current_regcache, regnum), '\000', |
5ebd2499 | 1121 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
1122 | |
1123 | /* On some architectures, e.g. HPPA, there are a few stray bits in | |
1124 | some registers, that the rest of the code would like to ignore. */ | |
1125 | ||
61a0eb5b AC |
1126 | /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is |
1127 | going to be deprecated. Instead architectures will leave the raw | |
1128 | register value as is and instead clean things up as they pass | |
d8124050 | 1129 | through the method gdbarch_pseudo_register_read() clean up the |
61a0eb5b AC |
1130 | values. */ |
1131 | ||
4ee3352d | 1132 | #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE |
0b434a00 AC |
1133 | DEPRECATED_CLEAN_UP_REGISTER_VALUE \ |
1134 | (regnum, register_buffer (current_regcache, regnum)); | |
32178cab MS |
1135 | #endif |
1136 | } | |
1137 | ||
193cb69f AC |
1138 | void |
1139 | regcache_collect (int regnum, void *buf) | |
1140 | { | |
3fadccb3 AC |
1141 | memcpy (buf, register_buffer (current_regcache, regnum), |
1142 | REGISTER_RAW_SIZE (regnum)); | |
193cb69f AC |
1143 | } |
1144 | ||
1145 | ||
8227c0ff AC |
1146 | /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special |
1147 | handling for registers PC, SP, and FP. */ | |
32178cab | 1148 | |
4e052eda AC |
1149 | /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(), |
1150 | read_pc_pid(), read_pc(), generic_target_write_pc(), | |
1151 | write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(), | |
8227c0ff AC |
1152 | generic_target_write_sp(), write_sp(), generic_target_read_fp() and |
1153 | read_fp(), will eventually be moved out of the reg-cache into | |
1154 | either frame.[hc] or to the multi-arch framework. The are not part | |
1155 | of the raw register cache. */ | |
4e052eda | 1156 | |
32178cab MS |
1157 | /* This routine is getting awfully cluttered with #if's. It's probably |
1158 | time to turn this into READ_PC and define it in the tm.h file. | |
1159 | Ditto for write_pc. | |
1160 | ||
1161 | 1999-06-08: The following were re-written so that it assumes the | |
8e1a459b | 1162 | existence of a TARGET_READ_PC et.al. macro. A default generic |
32178cab MS |
1163 | version of that macro is made available where needed. |
1164 | ||
1165 | Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled | |
1166 | by the multi-arch framework, it will eventually be possible to | |
1167 | eliminate the intermediate read_pc_pid(). The client would call | |
1168 | TARGET_READ_PC directly. (cagney). */ | |
1169 | ||
32178cab | 1170 | CORE_ADDR |
39f77062 | 1171 | generic_target_read_pc (ptid_t ptid) |
32178cab MS |
1172 | { |
1173 | #ifdef PC_REGNUM | |
1174 | if (PC_REGNUM >= 0) | |
1175 | { | |
39f77062 | 1176 | CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, ptid)); |
32178cab MS |
1177 | return pc_val; |
1178 | } | |
1179 | #endif | |
8e65ff28 AC |
1180 | internal_error (__FILE__, __LINE__, |
1181 | "generic_target_read_pc"); | |
32178cab MS |
1182 | return 0; |
1183 | } | |
1184 | ||
1185 | CORE_ADDR | |
39f77062 | 1186 | read_pc_pid (ptid_t ptid) |
32178cab | 1187 | { |
39f77062 | 1188 | ptid_t saved_inferior_ptid; |
32178cab MS |
1189 | CORE_ADDR pc_val; |
1190 | ||
39f77062 KB |
1191 | /* In case ptid != inferior_ptid. */ |
1192 | saved_inferior_ptid = inferior_ptid; | |
1193 | inferior_ptid = ptid; | |
32178cab | 1194 | |
39f77062 | 1195 | pc_val = TARGET_READ_PC (ptid); |
32178cab | 1196 | |
39f77062 | 1197 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1198 | return pc_val; |
1199 | } | |
1200 | ||
1201 | CORE_ADDR | |
1202 | read_pc (void) | |
1203 | { | |
39f77062 | 1204 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1205 | } |
1206 | ||
32178cab | 1207 | void |
39f77062 | 1208 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab MS |
1209 | { |
1210 | #ifdef PC_REGNUM | |
1211 | if (PC_REGNUM >= 0) | |
39f77062 | 1212 | write_register_pid (PC_REGNUM, pc, ptid); |
32178cab | 1213 | if (NPC_REGNUM >= 0) |
39f77062 | 1214 | write_register_pid (NPC_REGNUM, pc + 4, ptid); |
32178cab | 1215 | #else |
8e65ff28 AC |
1216 | internal_error (__FILE__, __LINE__, |
1217 | "generic_target_write_pc"); | |
32178cab MS |
1218 | #endif |
1219 | } | |
1220 | ||
1221 | void | |
39f77062 | 1222 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1223 | { |
39f77062 | 1224 | ptid_t saved_inferior_ptid; |
32178cab | 1225 | |
39f77062 KB |
1226 | /* In case ptid != inferior_ptid. */ |
1227 | saved_inferior_ptid = inferior_ptid; | |
1228 | inferior_ptid = ptid; | |
32178cab | 1229 | |
39f77062 | 1230 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1231 | |
39f77062 | 1232 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1233 | } |
1234 | ||
1235 | void | |
1236 | write_pc (CORE_ADDR pc) | |
1237 | { | |
39f77062 | 1238 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1239 | } |
1240 | ||
1241 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1242 | ||
32178cab MS |
1243 | CORE_ADDR |
1244 | generic_target_read_sp (void) | |
1245 | { | |
1246 | #ifdef SP_REGNUM | |
1247 | if (SP_REGNUM >= 0) | |
1248 | return read_register (SP_REGNUM); | |
1249 | #endif | |
8e65ff28 AC |
1250 | internal_error (__FILE__, __LINE__, |
1251 | "generic_target_read_sp"); | |
32178cab MS |
1252 | } |
1253 | ||
1254 | CORE_ADDR | |
1255 | read_sp (void) | |
1256 | { | |
1257 | return TARGET_READ_SP (); | |
1258 | } | |
1259 | ||
32178cab MS |
1260 | void |
1261 | generic_target_write_sp (CORE_ADDR val) | |
1262 | { | |
1263 | #ifdef SP_REGNUM | |
1264 | if (SP_REGNUM >= 0) | |
1265 | { | |
1266 | write_register (SP_REGNUM, val); | |
1267 | return; | |
1268 | } | |
1269 | #endif | |
8e65ff28 AC |
1270 | internal_error (__FILE__, __LINE__, |
1271 | "generic_target_write_sp"); | |
32178cab MS |
1272 | } |
1273 | ||
1274 | void | |
1275 | write_sp (CORE_ADDR val) | |
1276 | { | |
1277 | TARGET_WRITE_SP (val); | |
1278 | } | |
1279 | ||
32178cab MS |
1280 | CORE_ADDR |
1281 | generic_target_read_fp (void) | |
1282 | { | |
1283 | #ifdef FP_REGNUM | |
1284 | if (FP_REGNUM >= 0) | |
1285 | return read_register (FP_REGNUM); | |
1286 | #endif | |
8e65ff28 AC |
1287 | internal_error (__FILE__, __LINE__, |
1288 | "generic_target_read_fp"); | |
32178cab MS |
1289 | } |
1290 | ||
1291 | CORE_ADDR | |
1292 | read_fp (void) | |
1293 | { | |
1294 | return TARGET_READ_FP (); | |
1295 | } | |
1296 | ||
705152c5 MS |
1297 | /* ARGSUSED */ |
1298 | static void | |
1299 | reg_flush_command (char *command, int from_tty) | |
1300 | { | |
1301 | /* Force-flush the register cache. */ | |
1302 | registers_changed (); | |
1303 | if (from_tty) | |
1304 | printf_filtered ("Register cache flushed.\n"); | |
1305 | } | |
1306 | ||
32178cab MS |
1307 | static void |
1308 | build_regcache (void) | |
3fadccb3 AC |
1309 | { |
1310 | current_regcache = regcache_xmalloc (current_gdbarch); | |
1311 | current_regcache->passthrough_p = 1; | |
1312 | registers = deprecated_grub_regcache_for_registers (current_regcache); | |
1313 | register_valid = deprecated_grub_regcache_for_register_valid (current_regcache); | |
1314 | } | |
1315 | ||
af030b9a AC |
1316 | static void |
1317 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1318 | const unsigned char *buf, long len) | |
1319 | { | |
1320 | int i; | |
1321 | switch (endian) | |
1322 | { | |
1323 | case BFD_ENDIAN_BIG: | |
1324 | for (i = 0; i < len; i++) | |
1325 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1326 | break; | |
1327 | case BFD_ENDIAN_LITTLE: | |
1328 | for (i = len - 1; i >= 0; i--) | |
1329 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1330 | break; | |
1331 | default: | |
1332 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | enum regcache_dump_what | |
1337 | { | |
1338 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked | |
1339 | }; | |
1340 | ||
1341 | static void | |
1342 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1343 | enum regcache_dump_what what_to_dump) | |
1344 | { | |
1345 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
1346 | int regnum; | |
1347 | int footnote_nr = 0; | |
1348 | int footnote_register_size = 0; | |
1349 | int footnote_register_offset = 0; | |
1350 | int footnote_register_type_name_null = 0; | |
1351 | long register_offset = 0; | |
1352 | unsigned char *buf = alloca (regcache->descr->max_register_size); | |
1353 | ||
1354 | #if 0 | |
1355 | fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p); | |
1356 | fprintf_unfiltered (file, "nr_raw_registers %d\n", | |
1357 | regcache->descr->nr_raw_registers); | |
1358 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1359 | regcache->descr->nr_cooked_registers); | |
1360 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1361 | regcache->descr->sizeof_raw_registers); | |
1362 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1363 | regcache->descr->sizeof_raw_register_valid_p); | |
1364 | fprintf_unfiltered (file, "max_register_size %ld\n", | |
1365 | regcache->descr->max_register_size); | |
1366 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); | |
1367 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1368 | #endif | |
1369 | ||
1370 | gdb_assert (regcache->descr->nr_cooked_registers | |
1371 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1372 | ||
1373 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1374 | { | |
1375 | /* Name. */ | |
1376 | if (regnum < 0) | |
1377 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1378 | else | |
1379 | { | |
1380 | const char *p = REGISTER_NAME (regnum); | |
1381 | if (p == NULL) | |
1382 | p = ""; | |
1383 | else if (p[0] == '\0') | |
1384 | p = "''"; | |
1385 | fprintf_unfiltered (file, " %-10s", p); | |
1386 | } | |
1387 | ||
1388 | /* Number. */ | |
1389 | if (regnum < 0) | |
1390 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1391 | else | |
1392 | fprintf_unfiltered (file, " %4d", regnum); | |
1393 | ||
1394 | /* Relative number. */ | |
1395 | if (regnum < 0) | |
1396 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1397 | else if (regnum < NUM_REGS) | |
1398 | fprintf_unfiltered (file, " %4d", regnum); | |
1399 | else | |
1400 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1401 | ||
1402 | /* Offset. */ | |
1403 | if (regnum < 0) | |
1404 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1405 | else | |
1406 | { | |
1407 | fprintf_unfiltered (file, " %6ld", | |
1408 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad AC |
1409 | if (register_offset != regcache->descr->register_offset[regnum] |
1410 | || register_offset != REGISTER_BYTE (regnum)) | |
af030b9a AC |
1411 | { |
1412 | if (!footnote_register_offset) | |
1413 | footnote_register_offset = ++footnote_nr; | |
1414 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1415 | } | |
1416 | else | |
1417 | fprintf_unfiltered (file, " "); | |
1418 | register_offset = (regcache->descr->register_offset[regnum] | |
1419 | + regcache->descr->sizeof_register[regnum]); | |
1420 | } | |
1421 | ||
1422 | /* Size. */ | |
1423 | if (regnum < 0) | |
1424 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1425 | else | |
1426 | { | |
1427 | fprintf_unfiltered (file, " %5ld", | |
1428 | regcache->descr->sizeof_register[regnum]); | |
1429 | if ((regcache->descr->sizeof_register[regnum] | |
1430 | != REGISTER_RAW_SIZE (regnum)) | |
1431 | || (regcache->descr->sizeof_register[regnum] | |
1432 | != REGISTER_VIRTUAL_SIZE (regnum)) | |
1433 | || (regcache->descr->sizeof_register[regnum] | |
1434 | != TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum))) | |
1435 | ) | |
1436 | { | |
1437 | if (!footnote_register_size) | |
1438 | footnote_register_size = ++footnote_nr; | |
1439 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1440 | } | |
1441 | else | |
1442 | fprintf_unfiltered (file, " "); | |
1443 | } | |
1444 | ||
1445 | /* Type. */ | |
1446 | if (regnum < 0) | |
1447 | fprintf_unfiltered (file, " %-20s", "Type"); | |
1448 | else | |
1449 | { | |
1450 | static const char blt[] = "builtin_type"; | |
1451 | const char *t = TYPE_NAME (REGISTER_VIRTUAL_TYPE (regnum)); | |
1452 | if (t == NULL) | |
1453 | { | |
1454 | char *n; | |
1455 | if (!footnote_register_type_name_null) | |
1456 | footnote_register_type_name_null = ++footnote_nr; | |
1457 | xasprintf (&n, "*%d", footnote_register_type_name_null); | |
1458 | make_cleanup (xfree, n); | |
1459 | t = n; | |
1460 | } | |
1461 | /* Chop a leading builtin_type. */ | |
1462 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1463 | t += strlen (blt); | |
1464 | fprintf_unfiltered (file, " %-20s", t); | |
1465 | } | |
1466 | ||
1467 | /* Value, raw. */ | |
1468 | if (what_to_dump == regcache_dump_raw) | |
1469 | { | |
1470 | if (regnum < 0) | |
1471 | fprintf_unfiltered (file, "Raw value"); | |
1472 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1473 | fprintf_unfiltered (file, "<cooked>"); | |
1474 | else if (!regcache_valid_p (regcache, regnum)) | |
1475 | fprintf_unfiltered (file, "<invalid>"); | |
1476 | else | |
1477 | { | |
1478 | regcache_raw_read (regcache, regnum, buf); | |
1479 | fprintf_unfiltered (file, "0x"); | |
1480 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1481 | REGISTER_RAW_SIZE (regnum)); | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | /* Value, cooked. */ | |
1486 | if (what_to_dump == regcache_dump_cooked) | |
1487 | { | |
1488 | if (regnum < 0) | |
1489 | fprintf_unfiltered (file, "Cooked value"); | |
1490 | else | |
1491 | { | |
1492 | regcache_cooked_read (regcache, regnum, buf); | |
1493 | fprintf_unfiltered (file, "0x"); | |
1494 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1495 | REGISTER_VIRTUAL_SIZE (regnum)); | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | fprintf_unfiltered (file, "\n"); | |
1500 | } | |
1501 | ||
1502 | if (footnote_register_size) | |
1503 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1504 | footnote_register_size); | |
1505 | if (footnote_register_offset) | |
1506 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1507 | footnote_register_offset); | |
1508 | if (footnote_register_type_name_null) | |
1509 | fprintf_unfiltered (file, | |
1510 | "*%d: Register type's name NULL.\n", | |
1511 | footnote_register_type_name_null); | |
1512 | do_cleanups (cleanups); | |
1513 | } | |
1514 | ||
1515 | static void | |
1516 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1517 | { | |
1518 | if (args == NULL) | |
1519 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1520 | else | |
1521 | { | |
1522 | struct ui_file *file = gdb_fopen (args, "w"); | |
1523 | if (file == NULL) | |
1524 | perror_with_name ("maintenance print architecture"); | |
1525 | regcache_dump (current_regcache, file, what_to_dump); | |
1526 | ui_file_delete (file); | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | static void | |
1531 | maintenance_print_registers (char *args, int from_tty) | |
1532 | { | |
1533 | regcache_print (args, regcache_dump_none); | |
1534 | } | |
1535 | ||
1536 | static void | |
1537 | maintenance_print_raw_registers (char *args, int from_tty) | |
1538 | { | |
1539 | regcache_print (args, regcache_dump_raw); | |
1540 | } | |
1541 | ||
1542 | static void | |
1543 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1544 | { | |
1545 | regcache_print (args, regcache_dump_cooked); | |
1546 | } | |
1547 | ||
32178cab MS |
1548 | void |
1549 | _initialize_regcache (void) | |
1550 | { | |
3fadccb3 AC |
1551 | regcache_descr_handle = register_gdbarch_data (init_regcache_descr, |
1552 | xfree_regcache_descr); | |
1553 | REGISTER_GDBARCH_SWAP (current_regcache); | |
32178cab MS |
1554 | register_gdbarch_swap (®isters, sizeof (registers), NULL); |
1555 | register_gdbarch_swap (®ister_valid, sizeof (register_valid), NULL); | |
1556 | register_gdbarch_swap (NULL, 0, build_regcache); | |
705152c5 MS |
1557 | |
1558 | add_com ("flushregs", class_maintenance, reg_flush_command, | |
1559 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1560 | |
1561 | /* Initialize the thread/process associated with the current set of | |
1562 | registers. For now, -1 is special, and means `no current process'. */ | |
1563 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1564 | |
1565 | add_cmd ("registers", class_maintenance, | |
1566 | maintenance_print_registers, | |
1567 | "Print the internal register configuration.\ | |
1568 | Takes an optional file parameter.", | |
1569 | &maintenanceprintlist); | |
1570 | add_cmd ("raw-registers", class_maintenance, | |
1571 | maintenance_print_raw_registers, | |
1572 | "Print the internal register configuration including raw values.\ | |
1573 | Takes an optional file parameter.", | |
1574 | &maintenanceprintlist); | |
1575 | add_cmd ("cooked-registers", class_maintenance, | |
1576 | maintenance_print_cooked_registers, | |
1577 | "Print the internal register configuration including cooked values.\ | |
1578 | Takes an optional file parameter.", | |
1579 | &maintenanceprintlist); | |
1580 | ||
32178cab | 1581 | } |