Commit | Line | Data |
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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); | |
0ed04cce AC |
115 | if (descr->max_register_size < REGISTER_VIRTUAL_SIZE (i)) |
116 | descr->max_register_size = REGISTER_VIRTUAL_SIZE (i); | |
3fadccb3 AC |
117 | } |
118 | ||
119 | /* Come up with the real size of the registers buffer. */ | |
120 | descr->sizeof_raw_registers = REGISTER_BYTES; /* OK use. */ | |
d138e37a | 121 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
122 | { |
123 | long regend; | |
124 | /* Keep extending the buffer so that there is always enough | |
125 | space for all registers. The comparison is necessary since | |
126 | legacy code is free to put registers in random places in the | |
127 | buffer separated by holes. Once REGISTER_BYTE() is killed | |
128 | this can be greatly simplified. */ | |
129 | /* FIXME: cagney/2001-12-04: This code shouldn't need to use | |
130 | REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the | |
131 | buffer out so that certain registers just happen to overlap. | |
132 | Ulgh! New targets use gdbarch's register read/write and | |
133 | entirely avoid this uglyness. */ | |
134 | regend = descr->register_offset[i] + descr->sizeof_register[i]; | |
135 | if (descr->sizeof_raw_registers < regend) | |
136 | descr->sizeof_raw_registers = regend; | |
137 | } | |
138 | return descr; | |
139 | } | |
140 | ||
141 | static void * | |
142 | init_regcache_descr (struct gdbarch *gdbarch) | |
143 | { | |
144 | int i; | |
145 | struct regcache_descr *descr; | |
146 | gdb_assert (gdbarch != NULL); | |
147 | ||
148 | /* If an old style architecture, construct the register cache | |
149 | description using all the register macros. */ | |
d8124050 AC |
150 | if (!gdbarch_pseudo_register_read_p (gdbarch) |
151 | && !gdbarch_pseudo_register_write_p (gdbarch)) | |
3fadccb3 AC |
152 | return init_legacy_regcache_descr (gdbarch); |
153 | ||
154 | descr = XMALLOC (struct regcache_descr); | |
155 | descr->gdbarch = gdbarch; | |
156 | descr->legacy_p = 0; | |
157 | ||
d138e37a AC |
158 | /* Total size of the register space. The raw registers are mapped |
159 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 160 | either mapped onto raw-registers or memory. */ |
d138e37a | 161 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 AC |
162 | |
163 | /* Construct a strictly RAW register cache. Don't allow pseudo's | |
164 | into the register cache. */ | |
165 | descr->nr_raw_registers = NUM_REGS; | |
53826de9 AC |
166 | |
167 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
168 | array. This pretects GDB from erant code that accesses elements | |
169 | of the global register_valid_p[] array in the range [NUM_REGS | |
170 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
171 | descr->sizeof_raw_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; | |
3fadccb3 AC |
172 | |
173 | /* Lay out the register cache. The pseud-registers are included in | |
174 | the layout even though their value isn't stored in the register | |
175 | cache. Some code, via read_register_bytes() access a register | |
176 | using an offset/length rather than a register number. | |
177 | ||
178 | NOTE: cagney/2002-05-22: Only REGISTER_VIRTUAL_TYPE() needs to be | |
179 | used when constructing the register cache. It is assumed that | |
180 | register raw size, virtual size and type length of the type are | |
181 | all the same. */ | |
182 | ||
183 | { | |
184 | long offset = 0; | |
d138e37a AC |
185 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
186 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 187 | descr->max_register_size = 0; |
d138e37a | 188 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
189 | { |
190 | descr->sizeof_register[i] = TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (i)); | |
191 | descr->register_offset[i] = offset; | |
192 | offset += descr->sizeof_register[i]; | |
193 | if (descr->max_register_size < descr->sizeof_register[i]) | |
194 | descr->max_register_size = descr->sizeof_register[i]; | |
195 | } | |
196 | /* Set the real size of the register cache buffer. */ | |
197 | /* FIXME: cagney/2002-05-22: Should only need to allocate space | |
198 | for the raw registers. Unfortunatly some code still accesses | |
199 | the register array directly using the global registers[]. | |
200 | Until that code has been purged, play safe and over allocating | |
201 | the register buffer. Ulgh! */ | |
202 | descr->sizeof_raw_registers = offset; | |
203 | /* = descr->register_offset[descr->nr_raw_registers]; */ | |
204 | } | |
205 | ||
206 | #if 0 | |
207 | /* Sanity check. Confirm that the assumptions about gdbarch are | |
208 | true. The REGCACHE_DESCR_HANDLE is set before doing the checks | |
209 | so that targets using the generic methods supplied by regcache | |
210 | don't go into infinite recursion trying to, again, create the | |
211 | regcache. */ | |
212 | set_gdbarch_data (gdbarch, regcache_descr_handle, descr); | |
d138e37a | 213 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
214 | { |
215 | gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i)); | |
216 | gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i)); | |
217 | gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i)); | |
218 | } | |
219 | /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */ | |
220 | #endif | |
221 | ||
222 | return descr; | |
223 | } | |
224 | ||
225 | static struct regcache_descr * | |
226 | regcache_descr (struct gdbarch *gdbarch) | |
227 | { | |
228 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
229 | } | |
230 | ||
231 | static void | |
232 | xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr) | |
233 | { | |
234 | struct regcache_descr *descr = ptr; | |
235 | if (descr == NULL) | |
236 | return; | |
237 | xfree (descr->register_offset); | |
238 | xfree (descr->sizeof_register); | |
239 | descr->register_offset = NULL; | |
240 | descr->sizeof_register = NULL; | |
241 | xfree (descr); | |
242 | } | |
243 | ||
0ed04cce AC |
244 | /* Utility functions returning useful register attributes stored in |
245 | the regcache descr. */ | |
246 | ||
247 | int | |
248 | max_register_size (struct gdbarch *gdbarch) | |
249 | { | |
250 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
251 | return descr->max_register_size; | |
252 | } | |
253 | ||
3fadccb3 AC |
254 | /* The register cache for storing raw register values. */ |
255 | ||
256 | struct regcache | |
257 | { | |
258 | struct regcache_descr *descr; | |
259 | char *raw_registers; | |
260 | char *raw_register_valid_p; | |
261 | /* If a value isn't in the cache should the corresponding target be | |
262 | queried for a value. */ | |
263 | int passthrough_p; | |
264 | }; | |
265 | ||
266 | struct regcache * | |
267 | regcache_xmalloc (struct gdbarch *gdbarch) | |
268 | { | |
269 | struct regcache_descr *descr; | |
270 | struct regcache *regcache; | |
271 | gdb_assert (gdbarch != NULL); | |
272 | descr = regcache_descr (gdbarch); | |
273 | regcache = XMALLOC (struct regcache); | |
274 | regcache->descr = descr; | |
275 | regcache->raw_registers | |
276 | = XCALLOC (descr->sizeof_raw_registers, char); | |
277 | regcache->raw_register_valid_p | |
278 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); | |
279 | regcache->passthrough_p = 0; | |
280 | return regcache; | |
281 | } | |
282 | ||
283 | void | |
284 | regcache_xfree (struct regcache *regcache) | |
285 | { | |
286 | if (regcache == NULL) | |
287 | return; | |
288 | xfree (regcache->raw_registers); | |
289 | xfree (regcache->raw_register_valid_p); | |
290 | xfree (regcache); | |
291 | } | |
292 | ||
36160dc4 AC |
293 | void |
294 | do_regcache_xfree (void *data) | |
295 | { | |
296 | regcache_xfree (data); | |
297 | } | |
298 | ||
299 | struct cleanup * | |
300 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
301 | { | |
302 | return make_cleanup (do_regcache_xfree, regcache); | |
303 | } | |
304 | ||
3fadccb3 AC |
305 | void |
306 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
307 | { | |
308 | int i; | |
309 | char *buf; | |
310 | gdb_assert (src != NULL && dst != NULL); | |
311 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
312 | gdb_assert (src != dst); | |
313 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
314 | It keeps the existing code working where things rely on going | |
315 | through to the register cache. */ | |
316 | if (src == current_regcache && src->descr->legacy_p) | |
317 | { | |
318 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
319 | untangle fetch. */ | |
320 | read_register_bytes (0, dst->raw_registers, REGISTER_BYTES); | |
321 | return; | |
322 | } | |
323 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
324 | It keeps the existing code working where things rely on going | |
325 | through to the register cache. */ | |
326 | if (dst == current_regcache && dst->descr->legacy_p) | |
327 | { | |
328 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
329 | untangle fetch. */ | |
330 | write_register_bytes (0, src->raw_registers, REGISTER_BYTES); | |
331 | return; | |
332 | } | |
333 | buf = alloca (src->descr->max_register_size); | |
334 | for (i = 0; i < src->descr->nr_raw_registers; i++) | |
335 | { | |
336 | /* Should we worry about the valid bit here? */ | |
0818c12a AC |
337 | regcache_raw_read (src, i, buf); |
338 | regcache_raw_write (dst, i, buf); | |
3fadccb3 AC |
339 | } |
340 | } | |
341 | ||
342 | void | |
343 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
344 | { | |
345 | int i; | |
346 | gdb_assert (src != NULL && dst != NULL); | |
347 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
348 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
349 | move of data into the current_regcache(). Doing this would be | |
350 | silly - it would mean that valid_p would be completly invalid. */ | |
351 | gdb_assert (dst != current_regcache); | |
352 | memcpy (dst->raw_registers, src->raw_registers, | |
353 | dst->descr->sizeof_raw_registers); | |
354 | memcpy (dst->raw_register_valid_p, src->raw_register_valid_p, | |
355 | dst->descr->sizeof_raw_register_valid_p); | |
356 | } | |
357 | ||
358 | struct regcache * | |
359 | regcache_dup (struct regcache *src) | |
360 | { | |
361 | struct regcache *newbuf; | |
362 | gdb_assert (current_regcache != NULL); | |
363 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
364 | regcache_cpy (newbuf, src); | |
365 | return newbuf; | |
366 | } | |
367 | ||
368 | struct regcache * | |
369 | regcache_dup_no_passthrough (struct regcache *src) | |
370 | { | |
371 | struct regcache *newbuf; | |
372 | gdb_assert (current_regcache != NULL); | |
373 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
374 | regcache_cpy_no_passthrough (newbuf, src); | |
375 | return newbuf; | |
376 | } | |
377 | ||
378 | int | |
379 | regcache_valid_p (struct regcache *regcache, int regnum) | |
380 | { | |
381 | gdb_assert (regcache != NULL); | |
382 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
383 | return regcache->raw_register_valid_p[regnum]; | |
384 | } | |
385 | ||
3fadccb3 AC |
386 | char * |
387 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
388 | { | |
389 | return regcache->raw_registers; | |
390 | } | |
391 | ||
392 | char * | |
393 | deprecated_grub_regcache_for_register_valid (struct regcache *regcache) | |
394 | { | |
395 | return regcache->raw_register_valid_p; | |
396 | } | |
397 | ||
398 | /* Global structure containing the current regcache. */ | |
399 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
400 | register_valid[] currently point into this structure. */ | |
401 | struct regcache *current_regcache; | |
402 | ||
5ebd2499 | 403 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
404 | recording if the register values have been changed (eg. by the |
405 | user). Therefore all registers must be written back to the | |
406 | target when appropriate. */ | |
407 | ||
408 | /* REGISTERS contains the cached register values (in target byte order). */ | |
409 | ||
410 | char *registers; | |
411 | ||
412 | /* REGISTER_VALID is 0 if the register needs to be fetched, | |
413 | 1 if it has been fetched, and | |
414 | -1 if the register value was not available. | |
c97dcfc7 AC |
415 | |
416 | "Not available" indicates that the target is not not able to supply | |
417 | the register at this state. The register may become available at a | |
418 | later time (after the next resume). This often occures when GDB is | |
419 | manipulating a target that contains only a snapshot of the entire | |
420 | system being debugged - some of the registers in such a system may | |
421 | not have been saved. */ | |
32178cab MS |
422 | |
423 | signed char *register_valid; | |
424 | ||
39f77062 | 425 | /* The thread/process associated with the current set of registers. */ |
32178cab | 426 | |
39f77062 | 427 | static ptid_t registers_ptid; |
32178cab MS |
428 | |
429 | /* | |
430 | * FUNCTIONS: | |
431 | */ | |
432 | ||
433 | /* REGISTER_CACHED() | |
434 | ||
435 | Returns 0 if the value is not in the cache (needs fetch). | |
436 | >0 if the value is in the cache. | |
437 | <0 if the value is permanently unavailable (don't ask again). */ | |
438 | ||
439 | int | |
440 | register_cached (int regnum) | |
441 | { | |
442 | return register_valid[regnum]; | |
443 | } | |
444 | ||
7302a204 ND |
445 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
446 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
447 | ||
448 | void | |
449 | set_register_cached (int regnum, int state) | |
450 | { | |
53826de9 AC |
451 | gdb_assert (regnum >= 0); |
452 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
453 | current_regcache->raw_register_valid_p[regnum] = state; | |
7302a204 ND |
454 | } |
455 | ||
2dc4e391 DT |
456 | /* REGISTER_CHANGED |
457 | ||
458 | invalidate a single register REGNUM in the cache */ | |
459 | void | |
460 | register_changed (int regnum) | |
461 | { | |
7302a204 ND |
462 | set_register_cached (regnum, 0); |
463 | } | |
464 | ||
465 | /* If REGNUM >= 0, return a pointer to register REGNUM's cache buffer area, | |
466 | else return a pointer to the start of the cache buffer. */ | |
467 | ||
193cb69f | 468 | static char * |
3fadccb3 | 469 | register_buffer (struct regcache *regcache, int regnum) |
7302a204 | 470 | { |
3fadccb3 | 471 | return regcache->raw_registers + regcache->descr->register_offset[regnum]; |
7302a204 ND |
472 | } |
473 | ||
474 | /* Return whether register REGNUM is a real register. */ | |
475 | ||
476 | static int | |
477 | real_register (int regnum) | |
478 | { | |
479 | return regnum >= 0 && regnum < NUM_REGS; | |
480 | } | |
481 | ||
32178cab MS |
482 | /* Low level examining and depositing of registers. |
483 | ||
484 | The caller is responsible for making sure that the inferior is | |
485 | stopped before calling the fetching routines, or it will get | |
486 | garbage. (a change from GDB version 3, in which the caller got the | |
487 | value from the last stop). */ | |
488 | ||
489 | /* REGISTERS_CHANGED () | |
490 | ||
491 | Indicate that registers may have changed, so invalidate the cache. */ | |
492 | ||
493 | void | |
494 | registers_changed (void) | |
495 | { | |
496 | int i; | |
32178cab | 497 | |
39f77062 | 498 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
499 | |
500 | /* Force cleanup of any alloca areas if using C alloca instead of | |
501 | a builtin alloca. This particular call is used to clean up | |
502 | areas allocated by low level target code which may build up | |
503 | during lengthy interactions between gdb and the target before | |
504 | gdb gives control to the user (ie watchpoints). */ | |
505 | alloca (0); | |
506 | ||
53826de9 | 507 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 508 | set_register_cached (i, 0); |
32178cab MS |
509 | |
510 | if (registers_changed_hook) | |
511 | registers_changed_hook (); | |
512 | } | |
513 | ||
514 | /* REGISTERS_FETCHED () | |
515 | ||
516 | Indicate that all registers have been fetched, so mark them all valid. */ | |
517 | ||
31e9866e AC |
518 | /* NOTE: cagney/2001-12-04: This function does not set valid on the |
519 | pseudo-register range since pseudo registers are always supplied | |
520 | using supply_register(). */ | |
521 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target | |
522 | code was blatting the registers[] array and then calling this. | |
523 | Since targets should only be using supply_register() the need for | |
524 | this function/hack is eliminated. */ | |
32178cab MS |
525 | |
526 | void | |
527 | registers_fetched (void) | |
528 | { | |
529 | int i; | |
32178cab | 530 | |
a728f042 | 531 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 532 | set_register_cached (i, 1); |
fcdc5976 | 533 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 534 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
535 | } |
536 | ||
537 | /* read_register_bytes and write_register_bytes are generally a *BAD* | |
538 | idea. They are inefficient because they need to check for partial | |
539 | updates, which can only be done by scanning through all of the | |
540 | registers and seeing if the bytes that are being read/written fall | |
541 | inside of an invalid register. [The main reason this is necessary | |
542 | is that register sizes can vary, so a simple index won't suffice.] | |
543 | It is far better to call read_register_gen and write_register_gen | |
544 | if you want to get at the raw register contents, as it only takes a | |
5ebd2499 | 545 | regnum as an argument, and therefore can't do a partial register |
32178cab MS |
546 | update. |
547 | ||
548 | Prior to the recent fixes to check for partial updates, both read | |
549 | and write_register_bytes always checked to see if any registers | |
550 | were stale, and then called target_fetch_registers (-1) to update | |
551 | the whole set. This caused really slowed things down for remote | |
552 | targets. */ | |
553 | ||
554 | /* Copy INLEN bytes of consecutive data from registers | |
555 | starting with the INREGBYTE'th byte of register data | |
556 | into memory at MYADDR. */ | |
557 | ||
558 | void | |
61a0eb5b | 559 | read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 560 | { |
61a0eb5b | 561 | int in_end = in_start + in_len; |
5ebd2499 | 562 | int regnum; |
61a0eb5b | 563 | char *reg_buf = alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
564 | |
565 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
566 | update just those registers. */ | |
567 | ||
5ebd2499 | 568 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 569 | { |
61a0eb5b AC |
570 | int reg_start; |
571 | int reg_end; | |
572 | int reg_len; | |
573 | int start; | |
574 | int end; | |
575 | int byte; | |
32178cab | 576 | |
61a0eb5b AC |
577 | reg_start = REGISTER_BYTE (regnum); |
578 | reg_len = REGISTER_RAW_SIZE (regnum); | |
579 | reg_end = reg_start + reg_len; | |
32178cab | 580 | |
61a0eb5b | 581 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 582 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
583 | continue; |
584 | ||
275f450c AC |
585 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
586 | /* Force the cache to fetch the entire register. */ | |
587 | read_register_gen (regnum, reg_buf); | |
588 | else | |
589 | /* Legacy note: even though this register is ``invalid'' we | |
590 | still need to return something. It would appear that some | |
591 | code relies on apparent gaps in the register array also | |
592 | being returned. */ | |
593 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
594 | the entire register read/write flow of control. Must | |
595 | resist temptation to return 0xdeadbeef. */ | |
596 | memcpy (reg_buf, registers + reg_start, reg_len); | |
32178cab | 597 | |
61a0eb5b AC |
598 | /* Legacy note: This function, for some reason, allows a NULL |
599 | input buffer. If the buffer is NULL, the registers are still | |
600 | fetched, just the final transfer is skipped. */ | |
601 | if (in_buf == NULL) | |
602 | continue; | |
603 | ||
604 | /* start = max (reg_start, in_start) */ | |
605 | if (reg_start > in_start) | |
606 | start = reg_start; | |
607 | else | |
608 | start = in_start; | |
609 | ||
610 | /* end = min (reg_end, in_end) */ | |
611 | if (reg_end < in_end) | |
612 | end = reg_end; | |
613 | else | |
614 | end = in_end; | |
615 | ||
616 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
617 | for (byte = start; byte < end; byte++) | |
165cd47f | 618 | { |
61a0eb5b | 619 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 620 | } |
32178cab | 621 | } |
32178cab MS |
622 | } |
623 | ||
5ebd2499 ND |
624 | /* Read register REGNUM into memory at MYADDR, which must be large |
625 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
626 | register is known to be the size of a CORE_ADDR or smaller, |
627 | read_register can be used instead. */ | |
628 | ||
61a0eb5b AC |
629 | static void |
630 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 631 | { |
61a0eb5b | 632 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 633 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
634 | { |
635 | registers_changed (); | |
39f77062 | 636 | registers_ptid = inferior_ptid; |
32178cab MS |
637 | } |
638 | ||
7302a204 | 639 | if (!register_cached (regnum)) |
5c27f28a | 640 | target_fetch_registers (regnum); |
7302a204 | 641 | |
3fadccb3 | 642 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
5ebd2499 | 643 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
644 | } |
645 | ||
61a0eb5b | 646 | void |
1aaa5f99 | 647 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 648 | { |
3fadccb3 AC |
649 | gdb_assert (regcache != NULL && buf != NULL); |
650 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
651 | if (regcache->descr->legacy_p | |
652 | && regcache->passthrough_p) | |
653 | { | |
654 | gdb_assert (regcache == current_regcache); | |
655 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
656 | silently and very indirectly updates the regcache's regcache | |
657 | via the global register_valid[]. */ | |
658 | legacy_read_register_gen (regnum, buf); | |
659 | return; | |
660 | } | |
661 | /* Make certain that the register cache is up-to-date with respect | |
662 | to the current thread. This switching shouldn't be necessary | |
663 | only there is still only one target side register cache. Sigh! | |
664 | On the bright side, at least there is a regcache object. */ | |
665 | if (regcache->passthrough_p) | |
666 | { | |
667 | gdb_assert (regcache == current_regcache); | |
668 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
669 | { | |
670 | registers_changed (); | |
671 | registers_ptid = inferior_ptid; | |
672 | } | |
673 | if (!register_cached (regnum)) | |
5c27f28a | 674 | target_fetch_registers (regnum); |
3fadccb3 AC |
675 | } |
676 | /* Copy the value directly into the register cache. */ | |
677 | memcpy (buf, (regcache->raw_registers | |
678 | + regcache->descr->register_offset[regnum]), | |
679 | regcache->descr->sizeof_register[regnum]); | |
61a0eb5b AC |
680 | } |
681 | ||
28fc6740 AC |
682 | void |
683 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
684 | { | |
685 | char *buf; | |
686 | gdb_assert (regcache != NULL); | |
687 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
688 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
689 | regcache_raw_read (regcache, regnum, buf); | |
690 | (*val) = extract_signed_integer (buf, | |
691 | regcache->descr->sizeof_register[regnum]); | |
692 | } | |
693 | ||
694 | void | |
695 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
696 | ULONGEST *val) | |
697 | { | |
698 | char *buf; | |
699 | gdb_assert (regcache != NULL); | |
700 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
701 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
702 | regcache_raw_read (regcache, regnum, buf); | |
703 | (*val) = extract_unsigned_integer (buf, | |
704 | regcache->descr->sizeof_register[regnum]); | |
705 | } | |
706 | ||
61a0eb5b AC |
707 | void |
708 | read_register_gen (int regnum, char *buf) | |
709 | { | |
3fadccb3 AC |
710 | gdb_assert (current_regcache != NULL); |
711 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
712 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
713 | { |
714 | legacy_read_register_gen (regnum, buf); | |
715 | return; | |
716 | } | |
68365089 AC |
717 | regcache_cooked_read (current_regcache, regnum, buf); |
718 | } | |
719 | ||
720 | void | |
29e1842b | 721 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 722 | { |
d138e37a | 723 | gdb_assert (regnum >= 0); |
68365089 AC |
724 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
725 | if (regnum < regcache->descr->nr_raw_registers) | |
726 | regcache_raw_read (regcache, regnum, buf); | |
d138e37a | 727 | else |
68365089 AC |
728 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
729 | regnum, buf); | |
61a0eb5b AC |
730 | } |
731 | ||
a378f419 AC |
732 | void |
733 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
734 | LONGEST *val) | |
735 | { | |
736 | char *buf; | |
737 | gdb_assert (regcache != NULL); | |
738 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
739 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
740 | regcache_cooked_read (regcache, regnum, buf); | |
741 | (*val) = extract_signed_integer (buf, | |
742 | regcache->descr->sizeof_register[regnum]); | |
743 | } | |
744 | ||
745 | void | |
746 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
747 | ULONGEST *val) | |
748 | { | |
749 | char *buf; | |
750 | gdb_assert (regcache != NULL); | |
751 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
752 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
753 | regcache_cooked_read (regcache, regnum, buf); | |
754 | (*val) = extract_unsigned_integer (buf, | |
755 | regcache->descr->sizeof_register[regnum]); | |
756 | } | |
757 | ||
5ebd2499 ND |
758 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
759 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 760 | |
61a0eb5b | 761 | static void |
1aaa5f99 | 762 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
763 | { |
764 | int size; | |
61a0eb5b | 765 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
766 | |
767 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
768 | change the registers array if something writes to this register. */ | |
5ebd2499 | 769 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
770 | return; |
771 | ||
39f77062 | 772 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
773 | { |
774 | registers_changed (); | |
39f77062 | 775 | registers_ptid = inferior_ptid; |
32178cab MS |
776 | } |
777 | ||
5ebd2499 | 778 | size = REGISTER_RAW_SIZE (regnum); |
32178cab | 779 | |
7302a204 | 780 | if (real_register (regnum)) |
1297a2f0 MS |
781 | { |
782 | /* If we have a valid copy of the register, and new value == old | |
783 | value, then don't bother doing the actual store. */ | |
784 | if (register_cached (regnum) | |
3fadccb3 AC |
785 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
786 | == 0)) | |
1297a2f0 MS |
787 | return; |
788 | else | |
789 | target_prepare_to_store (); | |
790 | } | |
32178cab | 791 | |
3fadccb3 | 792 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 793 | |
7302a204 | 794 | set_register_cached (regnum, 1); |
5c27f28a | 795 | target_store_registers (regnum); |
32178cab MS |
796 | } |
797 | ||
61a0eb5b | 798 | void |
1aaa5f99 | 799 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 800 | { |
3fadccb3 AC |
801 | gdb_assert (regcache != NULL && buf != NULL); |
802 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
803 | ||
804 | if (regcache->passthrough_p | |
805 | && regcache->descr->legacy_p) | |
806 | { | |
807 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
808 | silently and very indirectly updates the regcache's buffers | |
809 | via the globals register_valid[] and registers[]. */ | |
810 | gdb_assert (regcache == current_regcache); | |
811 | legacy_write_register_gen (regnum, buf); | |
812 | return; | |
813 | } | |
814 | ||
815 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
816 | change the registers array if something writes to this register. */ | |
817 | if (CANNOT_STORE_REGISTER (regnum)) | |
818 | return; | |
819 | ||
820 | /* Handle the simple case first -> not write through so just store | |
821 | value in cache. */ | |
822 | if (!regcache->passthrough_p) | |
823 | { | |
824 | memcpy ((regcache->raw_registers | |
825 | + regcache->descr->register_offset[regnum]), buf, | |
826 | regcache->descr->sizeof_register[regnum]); | |
827 | regcache->raw_register_valid_p[regnum] = 1; | |
828 | return; | |
829 | } | |
830 | ||
831 | /* Make certain that the correct cache is selected. */ | |
832 | gdb_assert (regcache == current_regcache); | |
833 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
834 | { | |
835 | registers_changed (); | |
836 | registers_ptid = inferior_ptid; | |
837 | } | |
838 | ||
839 | /* If we have a valid copy of the register, and new value == old | |
840 | value, then don't bother doing the actual store. */ | |
841 | if (regcache_valid_p (regcache, regnum) | |
842 | && (memcmp (register_buffer (regcache, regnum), buf, | |
843 | regcache->descr->sizeof_register[regnum]) == 0)) | |
844 | return; | |
845 | ||
846 | target_prepare_to_store (); | |
847 | memcpy (register_buffer (regcache, regnum), buf, | |
848 | regcache->descr->sizeof_register[regnum]); | |
849 | regcache->raw_register_valid_p[regnum] = 1; | |
5c27f28a | 850 | target_store_registers (regnum); |
61a0eb5b AC |
851 | } |
852 | ||
853 | void | |
854 | write_register_gen (int regnum, char *buf) | |
855 | { | |
3fadccb3 AC |
856 | gdb_assert (current_regcache != NULL); |
857 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
858 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
859 | { |
860 | legacy_write_register_gen (regnum, buf); | |
861 | return; | |
862 | } | |
68365089 AC |
863 | regcache_cooked_write (current_regcache, regnum, buf); |
864 | } | |
865 | ||
866 | void | |
29e1842b | 867 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 868 | { |
d138e37a | 869 | gdb_assert (regnum >= 0); |
68365089 AC |
870 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
871 | if (regnum < regcache->descr->nr_raw_registers) | |
872 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 873 | else |
68365089 | 874 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 875 | regnum, buf); |
61a0eb5b AC |
876 | } |
877 | ||
32178cab MS |
878 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
879 | into registers starting with the MYREGSTART'th byte of register data. */ | |
880 | ||
881 | void | |
882 | write_register_bytes (int myregstart, char *myaddr, int inlen) | |
883 | { | |
884 | int myregend = myregstart + inlen; | |
5ebd2499 | 885 | int regnum; |
32178cab MS |
886 | |
887 | target_prepare_to_store (); | |
888 | ||
889 | /* Scan through the registers updating any that are covered by the | |
890 | range myregstart<=>myregend using write_register_gen, which does | |
891 | nice things like handling threads, and avoiding updates when the | |
892 | new and old contents are the same. */ | |
893 | ||
5ebd2499 | 894 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
895 | { |
896 | int regstart, regend; | |
897 | ||
5ebd2499 ND |
898 | regstart = REGISTER_BYTE (regnum); |
899 | regend = regstart + REGISTER_RAW_SIZE (regnum); | |
32178cab MS |
900 | |
901 | /* Is this register completely outside the range the user is writing? */ | |
902 | if (myregend <= regstart || regend <= myregstart) | |
903 | /* do nothing */ ; | |
904 | ||
905 | /* Is this register completely within the range the user is writing? */ | |
906 | else if (myregstart <= regstart && regend <= myregend) | |
5ebd2499 | 907 | write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
908 | |
909 | /* The register partially overlaps the range being written. */ | |
910 | else | |
911 | { | |
e6cbd02a | 912 | char *regbuf = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
913 | /* What's the overlap between this register's bytes and |
914 | those the caller wants to write? */ | |
915 | int overlapstart = max (regstart, myregstart); | |
916 | int overlapend = min (regend, myregend); | |
917 | ||
918 | /* We may be doing a partial update of an invalid register. | |
919 | Update it from the target before scribbling on it. */ | |
5ebd2499 | 920 | read_register_gen (regnum, regbuf); |
32178cab MS |
921 | |
922 | memcpy (registers + overlapstart, | |
923 | myaddr + (overlapstart - myregstart), | |
924 | overlapend - overlapstart); | |
925 | ||
5c27f28a | 926 | target_store_registers (regnum); |
32178cab MS |
927 | } |
928 | } | |
929 | } | |
930 | ||
06c0b04e AC |
931 | /* Perform a partial register transfer using a read, modify, write |
932 | operation. */ | |
933 | ||
934 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
935 | void *buf); | |
936 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
937 | const void *buf); | |
938 | ||
939 | void | |
940 | regcache_xfer_part (struct regcache *regcache, int regnum, | |
941 | int offset, int len, void *in, const void *out, | |
942 | regcache_read_ftype *read, regcache_write_ftype *write) | |
943 | { | |
944 | struct regcache_descr *descr = regcache->descr; | |
945 | bfd_byte *reg = alloca (descr->max_register_size); | |
946 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); | |
947 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
948 | /* Something to do? */ | |
949 | if (offset + len == 0) | |
950 | return; | |
951 | /* Read (when needed) ... */ | |
952 | if (in != NULL | |
953 | || offset > 0 | |
954 | || offset + len < descr->sizeof_register[regnum]) | |
955 | { | |
956 | gdb_assert (read != NULL); | |
957 | read (regcache, regnum, reg); | |
958 | } | |
959 | /* ... modify ... */ | |
960 | if (in != NULL) | |
961 | memcpy (in, reg + offset, len); | |
962 | if (out != NULL) | |
963 | memcpy (reg + offset, out, len); | |
964 | /* ... write (when needed). */ | |
965 | if (out != NULL) | |
966 | { | |
967 | gdb_assert (write != NULL); | |
968 | write (regcache, regnum, reg); | |
969 | } | |
970 | } | |
971 | ||
972 | void | |
973 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
974 | int offset, int len, void *buf) | |
975 | { | |
976 | struct regcache_descr *descr = regcache->descr; | |
977 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
978 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
979 | regcache_raw_read, regcache_raw_write); | |
980 | } | |
981 | ||
982 | void | |
983 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
984 | int offset, int len, const void *buf) | |
985 | { | |
986 | struct regcache_descr *descr = regcache->descr; | |
987 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
988 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
989 | regcache_raw_read, regcache_raw_write); | |
990 | } | |
991 | ||
992 | void | |
993 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
994 | int offset, int len, void *buf) | |
995 | { | |
996 | struct regcache_descr *descr = regcache->descr; | |
997 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
998 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
999 | regcache_cooked_read, regcache_cooked_write); | |
1000 | } | |
1001 | ||
1002 | void | |
1003 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
1004 | int offset, int len, const void *buf) | |
1005 | { | |
1006 | struct regcache_descr *descr = regcache->descr; | |
1007 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1008 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1009 | regcache_cooked_read, regcache_cooked_write); | |
1010 | } | |
32178cab | 1011 | |
5ebd2499 | 1012 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1013 | |
173155e8 | 1014 | ULONGEST |
5ebd2499 | 1015 | read_register (int regnum) |
32178cab | 1016 | { |
61a0eb5b AC |
1017 | char *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1018 | read_register_gen (regnum, buf); | |
1019 | return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
32178cab MS |
1020 | } |
1021 | ||
173155e8 | 1022 | ULONGEST |
39f77062 | 1023 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1024 | { |
39f77062 | 1025 | ptid_t save_ptid; |
32178cab MS |
1026 | int save_pid; |
1027 | CORE_ADDR retval; | |
1028 | ||
39f77062 | 1029 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1030 | return read_register (regnum); |
32178cab | 1031 | |
39f77062 | 1032 | save_ptid = inferior_ptid; |
32178cab | 1033 | |
39f77062 | 1034 | inferior_ptid = ptid; |
32178cab | 1035 | |
5ebd2499 | 1036 | retval = read_register (regnum); |
32178cab | 1037 | |
39f77062 | 1038 | inferior_ptid = save_ptid; |
32178cab MS |
1039 | |
1040 | return retval; | |
1041 | } | |
1042 | ||
5ebd2499 | 1043 | /* Return the contents of register REGNUM as a signed integer. */ |
173155e8 AC |
1044 | |
1045 | LONGEST | |
5ebd2499 | 1046 | read_signed_register (int regnum) |
173155e8 | 1047 | { |
61a0eb5b AC |
1048 | void *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1049 | read_register_gen (regnum, buf); | |
1050 | return (extract_signed_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
173155e8 AC |
1051 | } |
1052 | ||
1053 | LONGEST | |
39f77062 | 1054 | read_signed_register_pid (int regnum, ptid_t ptid) |
173155e8 | 1055 | { |
39f77062 | 1056 | ptid_t save_ptid; |
173155e8 AC |
1057 | LONGEST retval; |
1058 | ||
39f77062 | 1059 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1060 | return read_signed_register (regnum); |
173155e8 | 1061 | |
39f77062 | 1062 | save_ptid = inferior_ptid; |
173155e8 | 1063 | |
39f77062 | 1064 | inferior_ptid = ptid; |
173155e8 | 1065 | |
5ebd2499 | 1066 | retval = read_signed_register (regnum); |
173155e8 | 1067 | |
39f77062 | 1068 | inferior_ptid = save_ptid; |
173155e8 AC |
1069 | |
1070 | return retval; | |
1071 | } | |
1072 | ||
5ebd2499 | 1073 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
1074 | |
1075 | void | |
5ebd2499 | 1076 | write_register (int regnum, LONGEST val) |
32178cab | 1077 | { |
61a0eb5b | 1078 | void *buf; |
32178cab | 1079 | int size; |
5ebd2499 | 1080 | size = REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1081 | buf = alloca (size); |
1082 | store_signed_integer (buf, size, (LONGEST) val); | |
61a0eb5b | 1083 | write_register_gen (regnum, buf); |
32178cab MS |
1084 | } |
1085 | ||
1086 | void | |
39f77062 | 1087 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 1088 | { |
39f77062 | 1089 | ptid_t save_ptid; |
32178cab | 1090 | |
39f77062 | 1091 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 1092 | { |
5ebd2499 | 1093 | write_register (regnum, val); |
32178cab MS |
1094 | return; |
1095 | } | |
1096 | ||
39f77062 | 1097 | save_ptid = inferior_ptid; |
32178cab | 1098 | |
39f77062 | 1099 | inferior_ptid = ptid; |
32178cab | 1100 | |
5ebd2499 | 1101 | write_register (regnum, val); |
32178cab | 1102 | |
39f77062 | 1103 | inferior_ptid = save_ptid; |
32178cab MS |
1104 | } |
1105 | ||
1106 | /* SUPPLY_REGISTER() | |
1107 | ||
5ebd2499 | 1108 | Record that register REGNUM contains VAL. This is used when the |
32178cab MS |
1109 | value is obtained from the inferior or core dump, so there is no |
1110 | need to store the value there. | |
1111 | ||
1112 | If VAL is a NULL pointer, then it's probably an unsupported register. | |
5ebd2499 | 1113 | We just set its value to all zeros. We might want to record this |
32178cab MS |
1114 | fact, and report it to the users of read_register and friends. */ |
1115 | ||
1116 | void | |
1aaa5f99 | 1117 | supply_register (int regnum, const void *val) |
32178cab MS |
1118 | { |
1119 | #if 1 | |
39f77062 | 1120 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
1121 | { |
1122 | registers_changed (); | |
39f77062 | 1123 | registers_ptid = inferior_ptid; |
32178cab MS |
1124 | } |
1125 | #endif | |
1126 | ||
7302a204 | 1127 | set_register_cached (regnum, 1); |
32178cab | 1128 | if (val) |
3fadccb3 | 1129 | memcpy (register_buffer (current_regcache, regnum), val, |
5ebd2499 | 1130 | REGISTER_RAW_SIZE (regnum)); |
32178cab | 1131 | else |
3fadccb3 | 1132 | memset (register_buffer (current_regcache, regnum), '\000', |
5ebd2499 | 1133 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
1134 | |
1135 | /* On some architectures, e.g. HPPA, there are a few stray bits in | |
1136 | some registers, that the rest of the code would like to ignore. */ | |
1137 | ||
61a0eb5b AC |
1138 | /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is |
1139 | going to be deprecated. Instead architectures will leave the raw | |
1140 | register value as is and instead clean things up as they pass | |
d8124050 | 1141 | through the method gdbarch_pseudo_register_read() clean up the |
61a0eb5b AC |
1142 | values. */ |
1143 | ||
4ee3352d | 1144 | #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE |
0b434a00 AC |
1145 | DEPRECATED_CLEAN_UP_REGISTER_VALUE \ |
1146 | (regnum, register_buffer (current_regcache, regnum)); | |
32178cab MS |
1147 | #endif |
1148 | } | |
1149 | ||
193cb69f AC |
1150 | void |
1151 | regcache_collect (int regnum, void *buf) | |
1152 | { | |
3fadccb3 AC |
1153 | memcpy (buf, register_buffer (current_regcache, regnum), |
1154 | REGISTER_RAW_SIZE (regnum)); | |
193cb69f AC |
1155 | } |
1156 | ||
1157 | ||
8227c0ff AC |
1158 | /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special |
1159 | handling for registers PC, SP, and FP. */ | |
32178cab | 1160 | |
4e052eda AC |
1161 | /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(), |
1162 | read_pc_pid(), read_pc(), generic_target_write_pc(), | |
1163 | write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(), | |
8227c0ff AC |
1164 | generic_target_write_sp(), write_sp(), generic_target_read_fp() and |
1165 | read_fp(), will eventually be moved out of the reg-cache into | |
1166 | either frame.[hc] or to the multi-arch framework. The are not part | |
1167 | of the raw register cache. */ | |
4e052eda | 1168 | |
32178cab MS |
1169 | /* This routine is getting awfully cluttered with #if's. It's probably |
1170 | time to turn this into READ_PC and define it in the tm.h file. | |
1171 | Ditto for write_pc. | |
1172 | ||
1173 | 1999-06-08: The following were re-written so that it assumes the | |
8e1a459b | 1174 | existence of a TARGET_READ_PC et.al. macro. A default generic |
32178cab MS |
1175 | version of that macro is made available where needed. |
1176 | ||
1177 | Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled | |
1178 | by the multi-arch framework, it will eventually be possible to | |
1179 | eliminate the intermediate read_pc_pid(). The client would call | |
1180 | TARGET_READ_PC directly. (cagney). */ | |
1181 | ||
32178cab | 1182 | CORE_ADDR |
39f77062 | 1183 | generic_target_read_pc (ptid_t ptid) |
32178cab MS |
1184 | { |
1185 | #ifdef PC_REGNUM | |
1186 | if (PC_REGNUM >= 0) | |
1187 | { | |
39f77062 | 1188 | CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, ptid)); |
32178cab MS |
1189 | return pc_val; |
1190 | } | |
1191 | #endif | |
8e65ff28 AC |
1192 | internal_error (__FILE__, __LINE__, |
1193 | "generic_target_read_pc"); | |
32178cab MS |
1194 | return 0; |
1195 | } | |
1196 | ||
1197 | CORE_ADDR | |
39f77062 | 1198 | read_pc_pid (ptid_t ptid) |
32178cab | 1199 | { |
39f77062 | 1200 | ptid_t saved_inferior_ptid; |
32178cab MS |
1201 | CORE_ADDR pc_val; |
1202 | ||
39f77062 KB |
1203 | /* In case ptid != inferior_ptid. */ |
1204 | saved_inferior_ptid = inferior_ptid; | |
1205 | inferior_ptid = ptid; | |
32178cab | 1206 | |
39f77062 | 1207 | pc_val = TARGET_READ_PC (ptid); |
32178cab | 1208 | |
39f77062 | 1209 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1210 | return pc_val; |
1211 | } | |
1212 | ||
1213 | CORE_ADDR | |
1214 | read_pc (void) | |
1215 | { | |
39f77062 | 1216 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1217 | } |
1218 | ||
32178cab | 1219 | void |
39f77062 | 1220 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab MS |
1221 | { |
1222 | #ifdef PC_REGNUM | |
1223 | if (PC_REGNUM >= 0) | |
39f77062 | 1224 | write_register_pid (PC_REGNUM, pc, ptid); |
32178cab | 1225 | if (NPC_REGNUM >= 0) |
39f77062 | 1226 | write_register_pid (NPC_REGNUM, pc + 4, ptid); |
32178cab | 1227 | #else |
8e65ff28 AC |
1228 | internal_error (__FILE__, __LINE__, |
1229 | "generic_target_write_pc"); | |
32178cab MS |
1230 | #endif |
1231 | } | |
1232 | ||
1233 | void | |
39f77062 | 1234 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1235 | { |
39f77062 | 1236 | ptid_t saved_inferior_ptid; |
32178cab | 1237 | |
39f77062 KB |
1238 | /* In case ptid != inferior_ptid. */ |
1239 | saved_inferior_ptid = inferior_ptid; | |
1240 | inferior_ptid = ptid; | |
32178cab | 1241 | |
39f77062 | 1242 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1243 | |
39f77062 | 1244 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1245 | } |
1246 | ||
1247 | void | |
1248 | write_pc (CORE_ADDR pc) | |
1249 | { | |
39f77062 | 1250 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1251 | } |
1252 | ||
1253 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1254 | ||
32178cab MS |
1255 | CORE_ADDR |
1256 | generic_target_read_sp (void) | |
1257 | { | |
1258 | #ifdef SP_REGNUM | |
1259 | if (SP_REGNUM >= 0) | |
1260 | return read_register (SP_REGNUM); | |
1261 | #endif | |
8e65ff28 AC |
1262 | internal_error (__FILE__, __LINE__, |
1263 | "generic_target_read_sp"); | |
32178cab MS |
1264 | } |
1265 | ||
1266 | CORE_ADDR | |
1267 | read_sp (void) | |
1268 | { | |
1269 | return TARGET_READ_SP (); | |
1270 | } | |
1271 | ||
32178cab MS |
1272 | void |
1273 | generic_target_write_sp (CORE_ADDR val) | |
1274 | { | |
1275 | #ifdef SP_REGNUM | |
1276 | if (SP_REGNUM >= 0) | |
1277 | { | |
1278 | write_register (SP_REGNUM, val); | |
1279 | return; | |
1280 | } | |
1281 | #endif | |
8e65ff28 AC |
1282 | internal_error (__FILE__, __LINE__, |
1283 | "generic_target_write_sp"); | |
32178cab MS |
1284 | } |
1285 | ||
1286 | void | |
1287 | write_sp (CORE_ADDR val) | |
1288 | { | |
1289 | TARGET_WRITE_SP (val); | |
1290 | } | |
1291 | ||
32178cab MS |
1292 | CORE_ADDR |
1293 | generic_target_read_fp (void) | |
1294 | { | |
1295 | #ifdef FP_REGNUM | |
1296 | if (FP_REGNUM >= 0) | |
1297 | return read_register (FP_REGNUM); | |
1298 | #endif | |
8e65ff28 AC |
1299 | internal_error (__FILE__, __LINE__, |
1300 | "generic_target_read_fp"); | |
32178cab MS |
1301 | } |
1302 | ||
1303 | CORE_ADDR | |
1304 | read_fp (void) | |
1305 | { | |
1306 | return TARGET_READ_FP (); | |
1307 | } | |
1308 | ||
705152c5 MS |
1309 | /* ARGSUSED */ |
1310 | static void | |
1311 | reg_flush_command (char *command, int from_tty) | |
1312 | { | |
1313 | /* Force-flush the register cache. */ | |
1314 | registers_changed (); | |
1315 | if (from_tty) | |
1316 | printf_filtered ("Register cache flushed.\n"); | |
1317 | } | |
1318 | ||
32178cab MS |
1319 | static void |
1320 | build_regcache (void) | |
3fadccb3 AC |
1321 | { |
1322 | current_regcache = regcache_xmalloc (current_gdbarch); | |
1323 | current_regcache->passthrough_p = 1; | |
1324 | registers = deprecated_grub_regcache_for_registers (current_regcache); | |
1325 | register_valid = deprecated_grub_regcache_for_register_valid (current_regcache); | |
1326 | } | |
1327 | ||
af030b9a AC |
1328 | static void |
1329 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1330 | const unsigned char *buf, long len) | |
1331 | { | |
1332 | int i; | |
1333 | switch (endian) | |
1334 | { | |
1335 | case BFD_ENDIAN_BIG: | |
1336 | for (i = 0; i < len; i++) | |
1337 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1338 | break; | |
1339 | case BFD_ENDIAN_LITTLE: | |
1340 | for (i = len - 1; i >= 0; i--) | |
1341 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1342 | break; | |
1343 | default: | |
1344 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | enum regcache_dump_what | |
1349 | { | |
1350 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked | |
1351 | }; | |
1352 | ||
1353 | static void | |
1354 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1355 | enum regcache_dump_what what_to_dump) | |
1356 | { | |
1357 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
1358 | int regnum; | |
1359 | int footnote_nr = 0; | |
1360 | int footnote_register_size = 0; | |
1361 | int footnote_register_offset = 0; | |
1362 | int footnote_register_type_name_null = 0; | |
1363 | long register_offset = 0; | |
1364 | unsigned char *buf = alloca (regcache->descr->max_register_size); | |
1365 | ||
1366 | #if 0 | |
1367 | fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p); | |
1368 | fprintf_unfiltered (file, "nr_raw_registers %d\n", | |
1369 | regcache->descr->nr_raw_registers); | |
1370 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1371 | regcache->descr->nr_cooked_registers); | |
1372 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1373 | regcache->descr->sizeof_raw_registers); | |
1374 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1375 | regcache->descr->sizeof_raw_register_valid_p); | |
1376 | fprintf_unfiltered (file, "max_register_size %ld\n", | |
1377 | regcache->descr->max_register_size); | |
1378 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); | |
1379 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1380 | #endif | |
1381 | ||
1382 | gdb_assert (regcache->descr->nr_cooked_registers | |
1383 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1384 | ||
1385 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1386 | { | |
1387 | /* Name. */ | |
1388 | if (regnum < 0) | |
1389 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1390 | else | |
1391 | { | |
1392 | const char *p = REGISTER_NAME (regnum); | |
1393 | if (p == NULL) | |
1394 | p = ""; | |
1395 | else if (p[0] == '\0') | |
1396 | p = "''"; | |
1397 | fprintf_unfiltered (file, " %-10s", p); | |
1398 | } | |
1399 | ||
1400 | /* Number. */ | |
1401 | if (regnum < 0) | |
1402 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1403 | else | |
1404 | fprintf_unfiltered (file, " %4d", regnum); | |
1405 | ||
1406 | /* Relative number. */ | |
1407 | if (regnum < 0) | |
1408 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1409 | else if (regnum < NUM_REGS) | |
1410 | fprintf_unfiltered (file, " %4d", regnum); | |
1411 | else | |
1412 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1413 | ||
1414 | /* Offset. */ | |
1415 | if (regnum < 0) | |
1416 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1417 | else | |
1418 | { | |
1419 | fprintf_unfiltered (file, " %6ld", | |
1420 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad AC |
1421 | if (register_offset != regcache->descr->register_offset[regnum] |
1422 | || register_offset != REGISTER_BYTE (regnum)) | |
af030b9a AC |
1423 | { |
1424 | if (!footnote_register_offset) | |
1425 | footnote_register_offset = ++footnote_nr; | |
1426 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1427 | } | |
1428 | else | |
1429 | fprintf_unfiltered (file, " "); | |
1430 | register_offset = (regcache->descr->register_offset[regnum] | |
1431 | + regcache->descr->sizeof_register[regnum]); | |
1432 | } | |
1433 | ||
1434 | /* Size. */ | |
1435 | if (regnum < 0) | |
1436 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1437 | else | |
1438 | { | |
1439 | fprintf_unfiltered (file, " %5ld", | |
1440 | regcache->descr->sizeof_register[regnum]); | |
1441 | if ((regcache->descr->sizeof_register[regnum] | |
1442 | != REGISTER_RAW_SIZE (regnum)) | |
1443 | || (regcache->descr->sizeof_register[regnum] | |
1444 | != REGISTER_VIRTUAL_SIZE (regnum)) | |
1445 | || (regcache->descr->sizeof_register[regnum] | |
1446 | != TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum))) | |
1447 | ) | |
1448 | { | |
1449 | if (!footnote_register_size) | |
1450 | footnote_register_size = ++footnote_nr; | |
1451 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1452 | } | |
1453 | else | |
1454 | fprintf_unfiltered (file, " "); | |
1455 | } | |
1456 | ||
1457 | /* Type. */ | |
1458 | if (regnum < 0) | |
1459 | fprintf_unfiltered (file, " %-20s", "Type"); | |
1460 | else | |
1461 | { | |
1462 | static const char blt[] = "builtin_type"; | |
1463 | const char *t = TYPE_NAME (REGISTER_VIRTUAL_TYPE (regnum)); | |
1464 | if (t == NULL) | |
1465 | { | |
1466 | char *n; | |
1467 | if (!footnote_register_type_name_null) | |
1468 | footnote_register_type_name_null = ++footnote_nr; | |
1469 | xasprintf (&n, "*%d", footnote_register_type_name_null); | |
1470 | make_cleanup (xfree, n); | |
1471 | t = n; | |
1472 | } | |
1473 | /* Chop a leading builtin_type. */ | |
1474 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1475 | t += strlen (blt); | |
1476 | fprintf_unfiltered (file, " %-20s", t); | |
1477 | } | |
1478 | ||
1479 | /* Value, raw. */ | |
1480 | if (what_to_dump == regcache_dump_raw) | |
1481 | { | |
1482 | if (regnum < 0) | |
1483 | fprintf_unfiltered (file, "Raw value"); | |
1484 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1485 | fprintf_unfiltered (file, "<cooked>"); | |
1486 | else if (!regcache_valid_p (regcache, regnum)) | |
1487 | fprintf_unfiltered (file, "<invalid>"); | |
1488 | else | |
1489 | { | |
1490 | regcache_raw_read (regcache, regnum, buf); | |
1491 | fprintf_unfiltered (file, "0x"); | |
1492 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1493 | REGISTER_RAW_SIZE (regnum)); | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | /* Value, cooked. */ | |
1498 | if (what_to_dump == regcache_dump_cooked) | |
1499 | { | |
1500 | if (regnum < 0) | |
1501 | fprintf_unfiltered (file, "Cooked value"); | |
1502 | else | |
1503 | { | |
1504 | regcache_cooked_read (regcache, regnum, buf); | |
1505 | fprintf_unfiltered (file, "0x"); | |
1506 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1507 | REGISTER_VIRTUAL_SIZE (regnum)); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | fprintf_unfiltered (file, "\n"); | |
1512 | } | |
1513 | ||
1514 | if (footnote_register_size) | |
1515 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1516 | footnote_register_size); | |
1517 | if (footnote_register_offset) | |
1518 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1519 | footnote_register_offset); | |
1520 | if (footnote_register_type_name_null) | |
1521 | fprintf_unfiltered (file, | |
1522 | "*%d: Register type's name NULL.\n", | |
1523 | footnote_register_type_name_null); | |
1524 | do_cleanups (cleanups); | |
1525 | } | |
1526 | ||
1527 | static void | |
1528 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1529 | { | |
1530 | if (args == NULL) | |
1531 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1532 | else | |
1533 | { | |
1534 | struct ui_file *file = gdb_fopen (args, "w"); | |
1535 | if (file == NULL) | |
1536 | perror_with_name ("maintenance print architecture"); | |
1537 | regcache_dump (current_regcache, file, what_to_dump); | |
1538 | ui_file_delete (file); | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | static void | |
1543 | maintenance_print_registers (char *args, int from_tty) | |
1544 | { | |
1545 | regcache_print (args, regcache_dump_none); | |
1546 | } | |
1547 | ||
1548 | static void | |
1549 | maintenance_print_raw_registers (char *args, int from_tty) | |
1550 | { | |
1551 | regcache_print (args, regcache_dump_raw); | |
1552 | } | |
1553 | ||
1554 | static void | |
1555 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1556 | { | |
1557 | regcache_print (args, regcache_dump_cooked); | |
1558 | } | |
1559 | ||
32178cab MS |
1560 | void |
1561 | _initialize_regcache (void) | |
1562 | { | |
3fadccb3 AC |
1563 | regcache_descr_handle = register_gdbarch_data (init_regcache_descr, |
1564 | xfree_regcache_descr); | |
1565 | REGISTER_GDBARCH_SWAP (current_regcache); | |
32178cab MS |
1566 | register_gdbarch_swap (®isters, sizeof (registers), NULL); |
1567 | register_gdbarch_swap (®ister_valid, sizeof (register_valid), NULL); | |
1568 | register_gdbarch_swap (NULL, 0, build_regcache); | |
705152c5 MS |
1569 | |
1570 | add_com ("flushregs", class_maintenance, reg_flush_command, | |
1571 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1572 | |
1573 | /* Initialize the thread/process associated with the current set of | |
1574 | registers. For now, -1 is special, and means `no current process'. */ | |
1575 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1576 | |
1577 | add_cmd ("registers", class_maintenance, | |
1578 | maintenance_print_registers, | |
1579 | "Print the internal register configuration.\ | |
1580 | Takes an optional file parameter.", | |
1581 | &maintenanceprintlist); | |
1582 | add_cmd ("raw-registers", class_maintenance, | |
1583 | maintenance_print_raw_registers, | |
1584 | "Print the internal register configuration including raw values.\ | |
1585 | Takes an optional file parameter.", | |
1586 | &maintenanceprintlist); | |
1587 | add_cmd ("cooked-registers", class_maintenance, | |
1588 | maintenance_print_cooked_registers, | |
1589 | "Print the internal register configuration including cooked values.\ | |
1590 | Takes an optional file parameter.", | |
1591 | &maintenanceprintlist); | |
1592 | ||
32178cab | 1593 | } |