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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, | |
9564ee9f | 4 | 2001, 2002, 2004 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" |
b59ff9d5 | 29 | #include "reggroups.h" |
61a0eb5b | 30 | #include "gdb_assert.h" |
b66d6d2e | 31 | #include "gdb_string.h" |
af030b9a | 32 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
f4c5303c | 33 | #include "observer.h" |
32178cab MS |
34 | |
35 | /* | |
36 | * DATA STRUCTURE | |
37 | * | |
38 | * Here is the actual register cache. | |
39 | */ | |
40 | ||
3fadccb3 AC |
41 | /* Per-architecture object describing the layout of a register cache. |
42 | Computed once when the architecture is created */ | |
43 | ||
44 | struct gdbarch_data *regcache_descr_handle; | |
45 | ||
46 | struct regcache_descr | |
47 | { | |
48 | /* The architecture this descriptor belongs to. */ | |
49 | struct gdbarch *gdbarch; | |
50 | ||
bb1db049 AC |
51 | /* The raw register cache. Each raw (or hard) register is supplied |
52 | by the target interface. The raw cache should not contain | |
53 | redundant information - if the PC is constructed from two | |
54 | registers then those regigisters and not the PC lives in the raw | |
55 | cache. */ | |
3fadccb3 AC |
56 | int nr_raw_registers; |
57 | long sizeof_raw_registers; | |
58 | long sizeof_raw_register_valid_p; | |
59 | ||
d138e37a AC |
60 | /* The cooked register space. Each cooked register in the range |
61 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
62 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 63 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 64 | both raw registers and memory by the architecture methods |
02f60eae | 65 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 66 | int nr_cooked_registers; |
067df2e5 AC |
67 | long sizeof_cooked_registers; |
68 | long sizeof_cooked_register_valid_p; | |
d138e37a AC |
69 | |
70 | /* Offset and size (in 8 bit bytes), of reach register in the | |
71 | register cache. All registers (including those in the range | |
72 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
73 | Assigning all registers an offset makes it possible to keep | |
74 | legacy code, such as that found in read_register_bytes() and | |
75 | write_register_bytes() working. */ | |
3fadccb3 | 76 | long *register_offset; |
3fadccb3 | 77 | long *sizeof_register; |
3fadccb3 | 78 | |
bb425013 AC |
79 | /* Cached table containing the type of each register. */ |
80 | struct type **register_type; | |
3fadccb3 AC |
81 | }; |
82 | ||
3fadccb3 AC |
83 | static void * |
84 | init_regcache_descr (struct gdbarch *gdbarch) | |
85 | { | |
86 | int i; | |
87 | struct regcache_descr *descr; | |
88 | gdb_assert (gdbarch != NULL); | |
89 | ||
bb425013 | 90 | /* Create an initial, zero filled, table. */ |
116f06ea | 91 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 92 | descr->gdbarch = gdbarch; |
3fadccb3 | 93 | |
d138e37a AC |
94 | /* Total size of the register space. The raw registers are mapped |
95 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 96 | either mapped onto raw-registers or memory. */ |
d138e37a | 97 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
067df2e5 | 98 | descr->sizeof_cooked_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 | 99 | |
bb425013 | 100 | /* Fill in a table of register types. */ |
116f06ea AC |
101 | descr->register_type |
102 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, struct type *); | |
bb425013 | 103 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 104 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 105 | |
bb1db049 AC |
106 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
107 | into the register cache. */ | |
108 | descr->nr_raw_registers = NUM_REGS; | |
109 | ||
110 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
111 | array. This pretects GDB from erant code that accesses elements | |
112 | of the global register_valid_p[] array in the range [NUM_REGS | |
113 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
114 | descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p; | |
115 | ||
067df2e5 | 116 | /* Lay out the register cache. |
3fadccb3 | 117 | |
bb425013 AC |
118 | NOTE: cagney/2002-05-22: Only register_type() is used when |
119 | constructing the register cache. It is assumed that the | |
120 | register's raw size, virtual size and type length are all the | |
121 | same. */ | |
3fadccb3 AC |
122 | |
123 | { | |
124 | long offset = 0; | |
116f06ea AC |
125 | descr->sizeof_register |
126 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
127 | descr->register_offset | |
128 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
d138e37a | 129 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 130 | { |
bb425013 | 131 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
132 | descr->register_offset[i] = offset; |
133 | offset += descr->sizeof_register[i]; | |
123a958e | 134 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 AC |
135 | } |
136 | /* Set the real size of the register cache buffer. */ | |
067df2e5 | 137 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
138 | } |
139 | ||
067df2e5 | 140 | /* FIXME: cagney/2002-05-22: Should only need to allocate space for |
ce2826aa | 141 | the raw registers. Unfortunately some code still accesses the |
067df2e5 AC |
142 | register array directly using the global registers[]. Until that |
143 | code has been purged, play safe and over allocating the register | |
144 | buffer. Ulgh! */ | |
145 | descr->sizeof_raw_registers = descr->sizeof_cooked_registers; | |
146 | ||
46654a5b | 147 | /* Sanity check. Confirm that there is agreement between the |
62700349 AC |
148 | regcache and the target's redundant DEPRECATED_REGISTER_BYTE (new |
149 | targets should not even be defining it). */ | |
d138e37a | 150 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 151 | { |
62700349 AC |
152 | if (DEPRECATED_REGISTER_BYTE_P ()) |
153 | gdb_assert (descr->register_offset[i] == DEPRECATED_REGISTER_BYTE (i)); | |
46654a5b | 154 | #if 0 |
12c266ea | 155 | gdb_assert (descr->sizeof_register[i] == DEPRECATED_REGISTER_RAW_SIZE (i)); |
f30992d4 | 156 | gdb_assert (descr->sizeof_register[i] == DEPRECATED_REGISTER_VIRTUAL_SIZE (i)); |
46654a5b | 157 | #endif |
3fadccb3 | 158 | } |
b8b527c5 | 159 | /* gdb_assert (descr->sizeof_raw_registers == DEPRECATED_REGISTER_BYTES (i)); */ |
3fadccb3 AC |
160 | |
161 | return descr; | |
162 | } | |
163 | ||
164 | static struct regcache_descr * | |
165 | regcache_descr (struct gdbarch *gdbarch) | |
166 | { | |
167 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
168 | } | |
169 | ||
bb425013 AC |
170 | /* Utility functions returning useful register attributes stored in |
171 | the regcache descr. */ | |
172 | ||
173 | struct type * | |
174 | register_type (struct gdbarch *gdbarch, int regnum) | |
175 | { | |
176 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
177 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
178 | return descr->register_type[regnum]; | |
179 | } | |
180 | ||
0ed04cce AC |
181 | /* Utility functions returning useful register attributes stored in |
182 | the regcache descr. */ | |
183 | ||
08a617da AC |
184 | int |
185 | register_size (struct gdbarch *gdbarch, int regnum) | |
186 | { | |
187 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
188 | int size; | |
189 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); | |
190 | size = descr->sizeof_register[regnum]; | |
08a617da AC |
191 | return size; |
192 | } | |
193 | ||
3fadccb3 AC |
194 | /* The register cache for storing raw register values. */ |
195 | ||
196 | struct regcache | |
197 | { | |
198 | struct regcache_descr *descr; | |
51b1fe4e AC |
199 | /* The register buffers. A read-only register cache can hold the |
200 | full [0 .. NUM_REGS + NUM_PSEUDO_REGS) while a read/write | |
201 | register cache can only hold [0 .. NUM_REGS). */ | |
202 | char *registers; | |
203 | char *register_valid_p; | |
2d28509a AC |
204 | /* Is this a read-only cache? A read-only cache is used for saving |
205 | the target's register state (e.g, across an inferior function | |
206 | call or just before forcing a function return). A read-only | |
207 | cache can only be updated via the methods regcache_dup() and | |
208 | regcache_cpy(). The actual contents are determined by the | |
209 | reggroup_save and reggroup_restore methods. */ | |
210 | int readonly_p; | |
3fadccb3 AC |
211 | }; |
212 | ||
213 | struct regcache * | |
214 | regcache_xmalloc (struct gdbarch *gdbarch) | |
215 | { | |
216 | struct regcache_descr *descr; | |
217 | struct regcache *regcache; | |
218 | gdb_assert (gdbarch != NULL); | |
219 | descr = regcache_descr (gdbarch); | |
220 | regcache = XMALLOC (struct regcache); | |
221 | regcache->descr = descr; | |
51b1fe4e | 222 | regcache->registers |
3fadccb3 | 223 | = XCALLOC (descr->sizeof_raw_registers, char); |
51b1fe4e | 224 | regcache->register_valid_p |
3fadccb3 | 225 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); |
2d28509a | 226 | regcache->readonly_p = 1; |
3fadccb3 AC |
227 | return regcache; |
228 | } | |
229 | ||
230 | void | |
231 | regcache_xfree (struct regcache *regcache) | |
232 | { | |
233 | if (regcache == NULL) | |
234 | return; | |
51b1fe4e AC |
235 | xfree (regcache->registers); |
236 | xfree (regcache->register_valid_p); | |
3fadccb3 AC |
237 | xfree (regcache); |
238 | } | |
239 | ||
b9362cc7 | 240 | static void |
36160dc4 AC |
241 | do_regcache_xfree (void *data) |
242 | { | |
243 | regcache_xfree (data); | |
244 | } | |
245 | ||
246 | struct cleanup * | |
247 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
248 | { | |
249 | return make_cleanup (do_regcache_xfree, regcache); | |
250 | } | |
251 | ||
41d35cb0 MK |
252 | /* Return REGCACHE's architecture. */ |
253 | ||
254 | struct gdbarch * | |
255 | get_regcache_arch (const struct regcache *regcache) | |
256 | { | |
257 | return regcache->descr->gdbarch; | |
258 | } | |
259 | ||
51b1fe4e AC |
260 | /* Return a pointer to register REGNUM's buffer cache. */ |
261 | ||
262 | static char * | |
9a661b68 | 263 | register_buffer (const struct regcache *regcache, int regnum) |
51b1fe4e AC |
264 | { |
265 | return regcache->registers + regcache->descr->register_offset[regnum]; | |
266 | } | |
267 | ||
2d28509a | 268 | void |
5602984a AC |
269 | regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read, |
270 | void *src) | |
2d28509a AC |
271 | { |
272 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
123a958e | 273 | char buf[MAX_REGISTER_SIZE]; |
2d28509a | 274 | int regnum; |
2d28509a | 275 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 276 | end up trying to write the register values back out to the |
2d28509a | 277 | target. */ |
2d28509a AC |
278 | gdb_assert (dst->readonly_p); |
279 | /* Clear the dest. */ | |
280 | memset (dst->registers, 0, dst->descr->sizeof_cooked_registers); | |
281 | memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p); | |
282 | /* Copy over any registers (identified by their membership in the | |
5602984a AC |
283 | save_reggroup) and mark them as valid. The full [0 .. NUM_REGS + |
284 | NUM_PSEUDO_REGS) range is checked since some architectures need | |
285 | to save/restore `cooked' registers that live in memory. */ | |
2d28509a AC |
286 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) |
287 | { | |
288 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
289 | { | |
5602984a AC |
290 | int valid = cooked_read (src, regnum, buf); |
291 | if (valid) | |
292 | { | |
293 | memcpy (register_buffer (dst, regnum), buf, | |
294 | register_size (gdbarch, regnum)); | |
295 | dst->register_valid_p[regnum] = 1; | |
296 | } | |
2d28509a AC |
297 | } |
298 | } | |
299 | } | |
300 | ||
301 | void | |
5602984a AC |
302 | regcache_restore (struct regcache *dst, |
303 | regcache_cooked_read_ftype *cooked_read, | |
304 | void *src) | |
2d28509a AC |
305 | { |
306 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
123a958e | 307 | char buf[MAX_REGISTER_SIZE]; |
2d28509a | 308 | int regnum; |
5602984a AC |
309 | /* The dst had better not be read-only. If it is, the `restore' |
310 | doesn't make much sense. */ | |
2d28509a | 311 | gdb_assert (!dst->readonly_p); |
2d28509a | 312 | /* Copy over any registers, being careful to only restore those that |
5602984a AC |
313 | were both saved and need to be restored. The full [0 .. NUM_REGS |
314 | + NUM_PSEUDO_REGS) range is checked since some architectures need | |
315 | to save/restore `cooked' registers that live in memory. */ | |
316 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) | |
2d28509a | 317 | { |
5602984a | 318 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 319 | { |
5602984a AC |
320 | int valid = cooked_read (src, regnum, buf); |
321 | if (valid) | |
322 | regcache_cooked_write (dst, regnum, buf); | |
2d28509a AC |
323 | } |
324 | } | |
325 | } | |
326 | ||
5602984a AC |
327 | static int |
328 | do_cooked_read (void *src, int regnum, void *buf) | |
329 | { | |
330 | struct regcache *regcache = src; | |
6f4e5a41 | 331 | if (!regcache->register_valid_p[regnum] && regcache->readonly_p) |
5602984a AC |
332 | /* Don't even think about fetching a register from a read-only |
333 | cache when the register isn't yet valid. There isn't a target | |
334 | from which the register value can be fetched. */ | |
335 | return 0; | |
336 | regcache_cooked_read (regcache, regnum, buf); | |
337 | return 1; | |
338 | } | |
339 | ||
340 | ||
3fadccb3 AC |
341 | void |
342 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
343 | { | |
344 | int i; | |
345 | char *buf; | |
346 | gdb_assert (src != NULL && dst != NULL); | |
347 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
348 | gdb_assert (src != dst); | |
2d28509a AC |
349 | gdb_assert (src->readonly_p || dst->readonly_p); |
350 | if (!src->readonly_p) | |
5602984a | 351 | regcache_save (dst, do_cooked_read, src); |
2d28509a | 352 | else if (!dst->readonly_p) |
5602984a | 353 | regcache_restore (dst, do_cooked_read, src); |
2d28509a AC |
354 | else |
355 | regcache_cpy_no_passthrough (dst, src); | |
3fadccb3 AC |
356 | } |
357 | ||
358 | void | |
359 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
360 | { | |
361 | int i; | |
362 | gdb_assert (src != NULL && dst != NULL); | |
363 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
364 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
365 | move of data into the current_regcache(). Doing this would be | |
9564ee9f | 366 | silly - it would mean that valid_p would be completely invalid. */ |
3fadccb3 | 367 | gdb_assert (dst != current_regcache); |
51b1fe4e AC |
368 | memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers); |
369 | memcpy (dst->register_valid_p, src->register_valid_p, | |
3fadccb3 AC |
370 | dst->descr->sizeof_raw_register_valid_p); |
371 | } | |
372 | ||
373 | struct regcache * | |
374 | regcache_dup (struct regcache *src) | |
375 | { | |
376 | struct regcache *newbuf; | |
377 | gdb_assert (current_regcache != NULL); | |
378 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
379 | regcache_cpy (newbuf, src); | |
380 | return newbuf; | |
381 | } | |
382 | ||
383 | struct regcache * | |
384 | regcache_dup_no_passthrough (struct regcache *src) | |
385 | { | |
386 | struct regcache *newbuf; | |
387 | gdb_assert (current_regcache != NULL); | |
388 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
389 | regcache_cpy_no_passthrough (newbuf, src); | |
390 | return newbuf; | |
391 | } | |
392 | ||
393 | int | |
394 | regcache_valid_p (struct regcache *regcache, int regnum) | |
395 | { | |
396 | gdb_assert (regcache != NULL); | |
397 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
51b1fe4e | 398 | return regcache->register_valid_p[regnum]; |
3fadccb3 AC |
399 | } |
400 | ||
3fadccb3 AC |
401 | char * |
402 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
403 | { | |
51b1fe4e | 404 | return regcache->registers; |
3fadccb3 AC |
405 | } |
406 | ||
3fadccb3 AC |
407 | /* Global structure containing the current regcache. */ |
408 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
8262ee23 | 409 | deprecated_register_valid[] currently point into this structure. */ |
3fadccb3 AC |
410 | struct regcache *current_regcache; |
411 | ||
5ebd2499 | 412 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
413 | recording if the register values have been changed (eg. by the |
414 | user). Therefore all registers must be written back to the | |
415 | target when appropriate. */ | |
416 | ||
417 | /* REGISTERS contains the cached register values (in target byte order). */ | |
418 | ||
524d7c18 | 419 | char *deprecated_registers; |
32178cab | 420 | |
8262ee23 | 421 | /* DEPRECATED_REGISTER_VALID is 0 if the register needs to be fetched, |
32178cab MS |
422 | 1 if it has been fetched, and |
423 | -1 if the register value was not available. | |
c97dcfc7 AC |
424 | |
425 | "Not available" indicates that the target is not not able to supply | |
426 | the register at this state. The register may become available at a | |
427 | later time (after the next resume). This often occures when GDB is | |
428 | manipulating a target that contains only a snapshot of the entire | |
429 | system being debugged - some of the registers in such a system may | |
430 | not have been saved. */ | |
32178cab | 431 | |
8262ee23 | 432 | signed char *deprecated_register_valid; |
32178cab | 433 | |
39f77062 | 434 | /* The thread/process associated with the current set of registers. */ |
32178cab | 435 | |
39f77062 | 436 | static ptid_t registers_ptid; |
32178cab MS |
437 | |
438 | /* | |
439 | * FUNCTIONS: | |
440 | */ | |
441 | ||
442 | /* REGISTER_CACHED() | |
443 | ||
444 | Returns 0 if the value is not in the cache (needs fetch). | |
445 | >0 if the value is in the cache. | |
446 | <0 if the value is permanently unavailable (don't ask again). */ | |
447 | ||
448 | int | |
449 | register_cached (int regnum) | |
450 | { | |
8262ee23 | 451 | return deprecated_register_valid[regnum]; |
32178cab MS |
452 | } |
453 | ||
7302a204 ND |
454 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
455 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
456 | ||
457 | void | |
458 | set_register_cached (int regnum, int state) | |
459 | { | |
53826de9 AC |
460 | gdb_assert (regnum >= 0); |
461 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
51b1fe4e | 462 | current_regcache->register_valid_p[regnum] = state; |
7302a204 ND |
463 | } |
464 | ||
465 | /* Return whether register REGNUM is a real register. */ | |
466 | ||
467 | static int | |
468 | real_register (int regnum) | |
469 | { | |
470 | return regnum >= 0 && regnum < NUM_REGS; | |
471 | } | |
472 | ||
f4c5303c OF |
473 | /* Observer for the target_changed event. */ |
474 | ||
475 | void | |
476 | regcache_observer_target_changed (struct target_ops *target) | |
477 | { | |
478 | registers_changed (); | |
479 | } | |
480 | ||
32178cab MS |
481 | /* Low level examining and depositing of registers. |
482 | ||
483 | The caller is responsible for making sure that the inferior is | |
484 | stopped before calling the fetching routines, or it will get | |
485 | garbage. (a change from GDB version 3, in which the caller got the | |
486 | value from the last stop). */ | |
487 | ||
488 | /* REGISTERS_CHANGED () | |
489 | ||
490 | Indicate that registers may have changed, so invalidate the cache. */ | |
491 | ||
492 | void | |
493 | registers_changed (void) | |
494 | { | |
495 | int i; | |
32178cab | 496 | |
39f77062 | 497 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
498 | |
499 | /* Force cleanup of any alloca areas if using C alloca instead of | |
500 | a builtin alloca. This particular call is used to clean up | |
501 | areas allocated by low level target code which may build up | |
502 | during lengthy interactions between gdb and the target before | |
503 | gdb gives control to the user (ie watchpoints). */ | |
504 | alloca (0); | |
505 | ||
53826de9 | 506 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 507 | set_register_cached (i, 0); |
32178cab | 508 | |
9a4105ab AC |
509 | if (deprecated_registers_changed_hook) |
510 | deprecated_registers_changed_hook (); | |
32178cab MS |
511 | } |
512 | ||
2b9e5f3f | 513 | /* DEPRECATED_REGISTERS_FETCHED () |
32178cab MS |
514 | |
515 | Indicate that all registers have been fetched, so mark them all valid. */ | |
516 | ||
31e9866e AC |
517 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target |
518 | code was blatting the registers[] array and then calling this. | |
23a6d369 | 519 | Since targets should only be using regcache_raw_supply() the need for |
31e9866e | 520 | this function/hack is eliminated. */ |
32178cab MS |
521 | |
522 | void | |
2b9e5f3f | 523 | deprecated_registers_fetched (void) |
32178cab MS |
524 | { |
525 | int i; | |
32178cab | 526 | |
a728f042 | 527 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 528 | set_register_cached (i, 1); |
fcdc5976 | 529 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 530 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
531 | } |
532 | ||
73937e03 AC |
533 | /* deprecated_read_register_bytes and deprecated_write_register_bytes |
534 | are generally a *BAD* idea. They are inefficient because they need | |
535 | to check for partial updates, which can only be done by scanning | |
536 | through all of the registers and seeing if the bytes that are being | |
537 | read/written fall inside of an invalid register. [The main reason | |
538 | this is necessary is that register sizes can vary, so a simple | |
539 | index won't suffice.] It is far better to call read_register_gen | |
540 | and write_register_gen if you want to get at the raw register | |
541 | contents, as it only takes a regnum as an argument, and therefore | |
542 | can't do a partial register update. | |
32178cab MS |
543 | |
544 | Prior to the recent fixes to check for partial updates, both read | |
73937e03 AC |
545 | and deprecated_write_register_bytes always checked to see if any |
546 | registers were stale, and then called target_fetch_registers (-1) | |
547 | to update the whole set. This caused really slowed things down for | |
548 | remote targets. */ | |
32178cab MS |
549 | |
550 | /* Copy INLEN bytes of consecutive data from registers | |
551 | starting with the INREGBYTE'th byte of register data | |
552 | into memory at MYADDR. */ | |
553 | ||
554 | void | |
73937e03 | 555 | deprecated_read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 556 | { |
61a0eb5b | 557 | int in_end = in_start + in_len; |
5ebd2499 | 558 | int regnum; |
d9d9c31f | 559 | char reg_buf[MAX_REGISTER_SIZE]; |
32178cab MS |
560 | |
561 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
562 | update just those registers. */ | |
563 | ||
5ebd2499 | 564 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 565 | { |
61a0eb5b AC |
566 | int reg_start; |
567 | int reg_end; | |
568 | int reg_len; | |
569 | int start; | |
570 | int end; | |
571 | int byte; | |
32178cab | 572 | |
62700349 | 573 | reg_start = DEPRECATED_REGISTER_BYTE (regnum); |
12c266ea | 574 | reg_len = DEPRECATED_REGISTER_RAW_SIZE (regnum); |
61a0eb5b | 575 | reg_end = reg_start + reg_len; |
32178cab | 576 | |
61a0eb5b | 577 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 578 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
579 | continue; |
580 | ||
275f450c AC |
581 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
582 | /* Force the cache to fetch the entire register. */ | |
4caf0990 | 583 | deprecated_read_register_gen (regnum, reg_buf); |
275f450c AC |
584 | else |
585 | /* Legacy note: even though this register is ``invalid'' we | |
586 | still need to return something. It would appear that some | |
587 | code relies on apparent gaps in the register array also | |
588 | being returned. */ | |
589 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
590 | the entire register read/write flow of control. Must | |
591 | resist temptation to return 0xdeadbeef. */ | |
524d7c18 | 592 | memcpy (reg_buf, &deprecated_registers[reg_start], reg_len); |
32178cab | 593 | |
61a0eb5b AC |
594 | /* Legacy note: This function, for some reason, allows a NULL |
595 | input buffer. If the buffer is NULL, the registers are still | |
596 | fetched, just the final transfer is skipped. */ | |
597 | if (in_buf == NULL) | |
598 | continue; | |
599 | ||
600 | /* start = max (reg_start, in_start) */ | |
601 | if (reg_start > in_start) | |
602 | start = reg_start; | |
603 | else | |
604 | start = in_start; | |
605 | ||
606 | /* end = min (reg_end, in_end) */ | |
607 | if (reg_end < in_end) | |
608 | end = reg_end; | |
609 | else | |
610 | end = in_end; | |
611 | ||
612 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
613 | for (byte = start; byte < end; byte++) | |
165cd47f | 614 | { |
61a0eb5b | 615 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 616 | } |
32178cab | 617 | } |
32178cab MS |
618 | } |
619 | ||
5ebd2499 ND |
620 | /* Read register REGNUM into memory at MYADDR, which must be large |
621 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
622 | register is known to be the size of a CORE_ADDR or smaller, |
623 | read_register can be used instead. */ | |
624 | ||
61a0eb5b AC |
625 | static void |
626 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 627 | { |
61a0eb5b | 628 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 629 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
630 | { |
631 | registers_changed (); | |
39f77062 | 632 | registers_ptid = inferior_ptid; |
32178cab MS |
633 | } |
634 | ||
7302a204 | 635 | if (!register_cached (regnum)) |
5c27f28a | 636 | target_fetch_registers (regnum); |
7302a204 | 637 | |
3fadccb3 | 638 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
12c266ea | 639 | DEPRECATED_REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
640 | } |
641 | ||
61a0eb5b | 642 | void |
1aaa5f99 | 643 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 644 | { |
3fadccb3 AC |
645 | gdb_assert (regcache != NULL && buf != NULL); |
646 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
3fadccb3 AC |
647 | /* Make certain that the register cache is up-to-date with respect |
648 | to the current thread. This switching shouldn't be necessary | |
649 | only there is still only one target side register cache. Sigh! | |
650 | On the bright side, at least there is a regcache object. */ | |
2d28509a | 651 | if (!regcache->readonly_p) |
3fadccb3 AC |
652 | { |
653 | gdb_assert (regcache == current_regcache); | |
654 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
655 | { | |
656 | registers_changed (); | |
657 | registers_ptid = inferior_ptid; | |
658 | } | |
659 | if (!register_cached (regnum)) | |
5c27f28a | 660 | target_fetch_registers (regnum); |
3fadccb3 AC |
661 | } |
662 | /* Copy the value directly into the register cache. */ | |
51b1fe4e | 663 | memcpy (buf, register_buffer (regcache, regnum), |
3fadccb3 | 664 | regcache->descr->sizeof_register[regnum]); |
61a0eb5b AC |
665 | } |
666 | ||
28fc6740 AC |
667 | void |
668 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
669 | { | |
670 | char *buf; | |
671 | gdb_assert (regcache != NULL); | |
672 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
673 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
674 | regcache_raw_read (regcache, regnum, buf); | |
675 | (*val) = extract_signed_integer (buf, | |
676 | regcache->descr->sizeof_register[regnum]); | |
677 | } | |
678 | ||
679 | void | |
680 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
681 | ULONGEST *val) | |
682 | { | |
683 | char *buf; | |
684 | gdb_assert (regcache != NULL); | |
685 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
686 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
687 | regcache_raw_read (regcache, regnum, buf); | |
688 | (*val) = extract_unsigned_integer (buf, | |
689 | regcache->descr->sizeof_register[regnum]); | |
690 | } | |
691 | ||
c00dcbe9 MK |
692 | void |
693 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
694 | { | |
695 | void *buf; | |
696 | gdb_assert (regcache != NULL); | |
697 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
698 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
699 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
700 | regcache_raw_write (regcache, regnum, buf); | |
701 | } | |
702 | ||
703 | void | |
704 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
705 | ULONGEST val) | |
706 | { | |
707 | void *buf; | |
708 | gdb_assert (regcache != NULL); | |
709 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
710 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
711 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
712 | regcache_raw_write (regcache, regnum, buf); | |
713 | } | |
714 | ||
61a0eb5b | 715 | void |
4caf0990 | 716 | deprecated_read_register_gen (int regnum, char *buf) |
61a0eb5b | 717 | { |
3fadccb3 AC |
718 | gdb_assert (current_regcache != NULL); |
719 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
68365089 AC |
720 | regcache_cooked_read (current_regcache, regnum, buf); |
721 | } | |
722 | ||
723 | void | |
29e1842b | 724 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 725 | { |
d138e37a | 726 | gdb_assert (regnum >= 0); |
68365089 AC |
727 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
728 | if (regnum < regcache->descr->nr_raw_registers) | |
729 | regcache_raw_read (regcache, regnum, buf); | |
2d28509a AC |
730 | else if (regcache->readonly_p |
731 | && regnum < regcache->descr->nr_cooked_registers | |
732 | && regcache->register_valid_p[regnum]) | |
b2fa5097 | 733 | /* Read-only register cache, perhaps the cooked value was cached? */ |
2d28509a AC |
734 | memcpy (buf, register_buffer (regcache, regnum), |
735 | regcache->descr->sizeof_register[regnum]); | |
d138e37a | 736 | else |
68365089 AC |
737 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
738 | regnum, buf); | |
61a0eb5b AC |
739 | } |
740 | ||
a378f419 AC |
741 | void |
742 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
743 | LONGEST *val) | |
744 | { | |
745 | char *buf; | |
746 | gdb_assert (regcache != NULL); | |
a66a9c23 | 747 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
748 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
749 | regcache_cooked_read (regcache, regnum, buf); | |
750 | (*val) = extract_signed_integer (buf, | |
751 | regcache->descr->sizeof_register[regnum]); | |
752 | } | |
753 | ||
754 | void | |
755 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
756 | ULONGEST *val) | |
757 | { | |
758 | char *buf; | |
759 | gdb_assert (regcache != NULL); | |
a66a9c23 | 760 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
761 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
762 | regcache_cooked_read (regcache, regnum, buf); | |
763 | (*val) = extract_unsigned_integer (buf, | |
764 | regcache->descr->sizeof_register[regnum]); | |
765 | } | |
766 | ||
a66a9c23 AC |
767 | void |
768 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
769 | LONGEST val) | |
770 | { | |
771 | void *buf; | |
772 | gdb_assert (regcache != NULL); | |
773 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
774 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
775 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
776 | regcache_cooked_write (regcache, regnum, buf); | |
777 | } | |
778 | ||
779 | void | |
780 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
781 | ULONGEST val) | |
782 | { | |
783 | void *buf; | |
784 | gdb_assert (regcache != NULL); | |
785 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
786 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
787 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
788 | regcache_cooked_write (regcache, regnum, buf); | |
789 | } | |
790 | ||
5ebd2499 ND |
791 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
792 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 793 | |
61a0eb5b | 794 | static void |
1aaa5f99 | 795 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
796 | { |
797 | int size; | |
61a0eb5b | 798 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
799 | |
800 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
801 | change the registers array if something writes to this register. */ | |
5ebd2499 | 802 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
803 | return; |
804 | ||
39f77062 | 805 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
806 | { |
807 | registers_changed (); | |
39f77062 | 808 | registers_ptid = inferior_ptid; |
32178cab MS |
809 | } |
810 | ||
12c266ea | 811 | size = DEPRECATED_REGISTER_RAW_SIZE (regnum); |
32178cab | 812 | |
7302a204 | 813 | if (real_register (regnum)) |
1297a2f0 MS |
814 | { |
815 | /* If we have a valid copy of the register, and new value == old | |
816 | value, then don't bother doing the actual store. */ | |
817 | if (register_cached (regnum) | |
3fadccb3 AC |
818 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
819 | == 0)) | |
1297a2f0 MS |
820 | return; |
821 | else | |
822 | target_prepare_to_store (); | |
823 | } | |
32178cab | 824 | |
3fadccb3 | 825 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 826 | |
7302a204 | 827 | set_register_cached (regnum, 1); |
5c27f28a | 828 | target_store_registers (regnum); |
32178cab MS |
829 | } |
830 | ||
61a0eb5b | 831 | void |
1aaa5f99 | 832 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 833 | { |
3fadccb3 AC |
834 | gdb_assert (regcache != NULL && buf != NULL); |
835 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
2d28509a | 836 | gdb_assert (!regcache->readonly_p); |
3fadccb3 | 837 | |
3fadccb3 AC |
838 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
839 | change the registers array if something writes to this register. */ | |
840 | if (CANNOT_STORE_REGISTER (regnum)) | |
841 | return; | |
842 | ||
3fadccb3 AC |
843 | /* Make certain that the correct cache is selected. */ |
844 | gdb_assert (regcache == current_regcache); | |
845 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
846 | { | |
847 | registers_changed (); | |
848 | registers_ptid = inferior_ptid; | |
849 | } | |
850 | ||
851 | /* If we have a valid copy of the register, and new value == old | |
852 | value, then don't bother doing the actual store. */ | |
853 | if (regcache_valid_p (regcache, regnum) | |
854 | && (memcmp (register_buffer (regcache, regnum), buf, | |
855 | regcache->descr->sizeof_register[regnum]) == 0)) | |
856 | return; | |
857 | ||
858 | target_prepare_to_store (); | |
859 | memcpy (register_buffer (regcache, regnum), buf, | |
860 | regcache->descr->sizeof_register[regnum]); | |
51b1fe4e | 861 | regcache->register_valid_p[regnum] = 1; |
5c27f28a | 862 | target_store_registers (regnum); |
61a0eb5b AC |
863 | } |
864 | ||
865 | void | |
4caf0990 | 866 | deprecated_write_register_gen (int regnum, char *buf) |
61a0eb5b | 867 | { |
3fadccb3 AC |
868 | gdb_assert (current_regcache != NULL); |
869 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
68365089 AC |
870 | regcache_cooked_write (current_regcache, regnum, buf); |
871 | } | |
872 | ||
873 | void | |
29e1842b | 874 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 875 | { |
d138e37a | 876 | gdb_assert (regnum >= 0); |
68365089 AC |
877 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
878 | if (regnum < regcache->descr->nr_raw_registers) | |
879 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 880 | else |
68365089 | 881 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 882 | regnum, buf); |
61a0eb5b AC |
883 | } |
884 | ||
32178cab MS |
885 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
886 | into registers starting with the MYREGSTART'th byte of register data. */ | |
887 | ||
888 | void | |
73937e03 | 889 | deprecated_write_register_bytes (int myregstart, char *myaddr, int inlen) |
32178cab MS |
890 | { |
891 | int myregend = myregstart + inlen; | |
5ebd2499 | 892 | int regnum; |
32178cab MS |
893 | |
894 | target_prepare_to_store (); | |
895 | ||
896 | /* Scan through the registers updating any that are covered by the | |
897 | range myregstart<=>myregend using write_register_gen, which does | |
898 | nice things like handling threads, and avoiding updates when the | |
899 | new and old contents are the same. */ | |
900 | ||
5ebd2499 | 901 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
902 | { |
903 | int regstart, regend; | |
904 | ||
62700349 | 905 | regstart = DEPRECATED_REGISTER_BYTE (regnum); |
12c266ea | 906 | regend = regstart + DEPRECATED_REGISTER_RAW_SIZE (regnum); |
32178cab MS |
907 | |
908 | /* Is this register completely outside the range the user is writing? */ | |
909 | if (myregend <= regstart || regend <= myregstart) | |
910 | /* do nothing */ ; | |
911 | ||
912 | /* Is this register completely within the range the user is writing? */ | |
913 | else if (myregstart <= regstart && regend <= myregend) | |
4caf0990 | 914 | deprecated_write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
915 | |
916 | /* The register partially overlaps the range being written. */ | |
917 | else | |
918 | { | |
d9d9c31f | 919 | char regbuf[MAX_REGISTER_SIZE]; |
32178cab MS |
920 | /* What's the overlap between this register's bytes and |
921 | those the caller wants to write? */ | |
922 | int overlapstart = max (regstart, myregstart); | |
923 | int overlapend = min (regend, myregend); | |
924 | ||
925 | /* We may be doing a partial update of an invalid register. | |
926 | Update it from the target before scribbling on it. */ | |
4caf0990 | 927 | deprecated_read_register_gen (regnum, regbuf); |
32178cab | 928 | |
524d7c18 | 929 | memcpy (&deprecated_registers[overlapstart], |
32178cab MS |
930 | myaddr + (overlapstart - myregstart), |
931 | overlapend - overlapstart); | |
932 | ||
5c27f28a | 933 | target_store_registers (regnum); |
32178cab MS |
934 | } |
935 | } | |
936 | } | |
937 | ||
06c0b04e AC |
938 | /* Perform a partial register transfer using a read, modify, write |
939 | operation. */ | |
940 | ||
941 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
942 | void *buf); | |
943 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
944 | const void *buf); | |
945 | ||
b9362cc7 | 946 | static void |
06c0b04e AC |
947 | regcache_xfer_part (struct regcache *regcache, int regnum, |
948 | int offset, int len, void *in, const void *out, | |
949 | regcache_read_ftype *read, regcache_write_ftype *write) | |
950 | { | |
951 | struct regcache_descr *descr = regcache->descr; | |
123a958e | 952 | bfd_byte reg[MAX_REGISTER_SIZE]; |
06c0b04e AC |
953 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); |
954 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
955 | /* Something to do? */ | |
956 | if (offset + len == 0) | |
957 | return; | |
958 | /* Read (when needed) ... */ | |
959 | if (in != NULL | |
960 | || offset > 0 | |
961 | || offset + len < descr->sizeof_register[regnum]) | |
962 | { | |
963 | gdb_assert (read != NULL); | |
964 | read (regcache, regnum, reg); | |
965 | } | |
966 | /* ... modify ... */ | |
967 | if (in != NULL) | |
968 | memcpy (in, reg + offset, len); | |
969 | if (out != NULL) | |
970 | memcpy (reg + offset, out, len); | |
971 | /* ... write (when needed). */ | |
972 | if (out != NULL) | |
973 | { | |
974 | gdb_assert (write != NULL); | |
975 | write (regcache, regnum, reg); | |
976 | } | |
977 | } | |
978 | ||
979 | void | |
980 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
981 | int offset, int len, void *buf) | |
982 | { | |
983 | struct regcache_descr *descr = regcache->descr; | |
984 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
985 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
986 | regcache_raw_read, regcache_raw_write); | |
987 | } | |
988 | ||
989 | void | |
990 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
991 | int offset, int len, const void *buf) | |
992 | { | |
993 | struct regcache_descr *descr = regcache->descr; | |
994 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
995 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
996 | regcache_raw_read, regcache_raw_write); | |
997 | } | |
998 | ||
999 | void | |
1000 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
1001 | int offset, int len, void *buf) | |
1002 | { | |
1003 | struct regcache_descr *descr = regcache->descr; | |
1004 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1005 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1006 | regcache_cooked_read, regcache_cooked_write); | |
1007 | } | |
1008 | ||
1009 | void | |
1010 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
1011 | int offset, int len, const void *buf) | |
1012 | { | |
1013 | struct regcache_descr *descr = regcache->descr; | |
1014 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1015 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1016 | regcache_cooked_read, regcache_cooked_write); | |
1017 | } | |
32178cab | 1018 | |
d3b22ed5 AC |
1019 | /* Hack to keep code that view the register buffer as raw bytes |
1020 | working. */ | |
1021 | ||
1022 | int | |
1023 | register_offset_hack (struct gdbarch *gdbarch, int regnum) | |
1024 | { | |
1025 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
1026 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1027 | return descr->register_offset[regnum]; | |
1028 | } | |
1029 | ||
5ebd2499 | 1030 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1031 | |
173155e8 | 1032 | ULONGEST |
5ebd2499 | 1033 | read_register (int regnum) |
32178cab | 1034 | { |
12c266ea | 1035 | char *buf = alloca (DEPRECATED_REGISTER_RAW_SIZE (regnum)); |
4caf0990 | 1036 | deprecated_read_register_gen (regnum, buf); |
12c266ea | 1037 | return (extract_unsigned_integer (buf, DEPRECATED_REGISTER_RAW_SIZE (regnum))); |
32178cab MS |
1038 | } |
1039 | ||
173155e8 | 1040 | ULONGEST |
39f77062 | 1041 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1042 | { |
39f77062 | 1043 | ptid_t save_ptid; |
32178cab MS |
1044 | int save_pid; |
1045 | CORE_ADDR retval; | |
1046 | ||
39f77062 | 1047 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1048 | return read_register (regnum); |
32178cab | 1049 | |
39f77062 | 1050 | save_ptid = inferior_ptid; |
32178cab | 1051 | |
39f77062 | 1052 | inferior_ptid = ptid; |
32178cab | 1053 | |
5ebd2499 | 1054 | retval = read_register (regnum); |
32178cab | 1055 | |
39f77062 | 1056 | inferior_ptid = save_ptid; |
32178cab MS |
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; |
12c266ea | 1068 | size = DEPRECATED_REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1069 | buf = alloca (size); |
1070 | store_signed_integer (buf, size, (LONGEST) val); | |
4caf0990 | 1071 | deprecated_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 | ||
a16d75cc | 1094 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1095 | |
1096 | void | |
1097 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) | |
1098 | { | |
1099 | void *regbuf; | |
1100 | size_t size; | |
1101 | ||
a16d75cc | 1102 | gdb_assert (regcache != NULL); |
9a661b68 MK |
1103 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); |
1104 | gdb_assert (!regcache->readonly_p); | |
1105 | ||
1106 | /* FIXME: kettenis/20030828: It shouldn't be necessary to handle | |
1107 | CURRENT_REGCACHE specially here. */ | |
1108 | if (regcache == current_regcache | |
1109 | && !ptid_equal (registers_ptid, inferior_ptid)) | |
1110 | { | |
1111 | registers_changed (); | |
1112 | registers_ptid = inferior_ptid; | |
1113 | } | |
1114 | ||
1115 | regbuf = register_buffer (regcache, regnum); | |
1116 | size = regcache->descr->sizeof_register[regnum]; | |
1117 | ||
1118 | if (buf) | |
1119 | memcpy (regbuf, buf, size); | |
1120 | else | |
1121 | memset (regbuf, 0, size); | |
1122 | ||
1123 | /* Mark the register as cached. */ | |
1124 | regcache->register_valid_p[regnum] = 1; | |
1125 | } | |
1126 | ||
1127 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ | |
1128 | ||
1129 | void | |
1130 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) | |
1131 | { | |
1132 | const void *regbuf; | |
1133 | size_t size; | |
1134 | ||
1135 | gdb_assert (regcache != NULL && buf != NULL); | |
1136 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
1137 | ||
1138 | regbuf = register_buffer (regcache, regnum); | |
1139 | size = regcache->descr->sizeof_register[regnum]; | |
1140 | memcpy (buf, regbuf, size); | |
1141 | } | |
1142 | ||
193cb69f | 1143 | |
0ba6dca9 AC |
1144 | /* read_pc, write_pc, read_sp, deprecated_read_fp, etc. Special |
1145 | handling for registers PC, SP, and FP. */ | |
32178cab | 1146 | |
cde9ea48 AC |
1147 | /* NOTE: cagney/2001-02-18: The functions read_pc_pid(), read_pc(), |
1148 | read_sp(), and deprecated_read_fp(), will eventually be replaced by | |
1149 | per-frame methods. Instead of relying on the global INFERIOR_PTID, | |
1150 | they will use the contextual information provided by the FRAME. | |
1151 | These functions do not belong in the register cache. */ | |
32178cab | 1152 | |
cde9ea48 AC |
1153 | /* NOTE: cagney/2003-06-07: The functions generic_target_write_pc(), |
1154 | write_pc_pid(), write_pc(), and deprecated_read_fp(), all need to | |
1155 | be replaced by something that does not rely on global state. But | |
1156 | what? */ | |
32178cab MS |
1157 | |
1158 | CORE_ADDR | |
39f77062 | 1159 | read_pc_pid (ptid_t ptid) |
32178cab | 1160 | { |
39f77062 | 1161 | ptid_t saved_inferior_ptid; |
32178cab MS |
1162 | CORE_ADDR pc_val; |
1163 | ||
39f77062 KB |
1164 | /* In case ptid != inferior_ptid. */ |
1165 | saved_inferior_ptid = inferior_ptid; | |
1166 | inferior_ptid = ptid; | |
32178cab | 1167 | |
cde9ea48 AC |
1168 | if (TARGET_READ_PC_P ()) |
1169 | pc_val = TARGET_READ_PC (ptid); | |
1170 | /* Else use per-frame method on get_current_frame. */ | |
1171 | else if (PC_REGNUM >= 0) | |
1172 | { | |
1173 | CORE_ADDR raw_val = read_register_pid (PC_REGNUM, ptid); | |
6ba34a8d | 1174 | pc_val = ADDR_BITS_REMOVE (raw_val); |
cde9ea48 AC |
1175 | } |
1176 | else | |
1177 | internal_error (__FILE__, __LINE__, "read_pc_pid: Unable to find PC"); | |
32178cab | 1178 | |
39f77062 | 1179 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1180 | return pc_val; |
1181 | } | |
1182 | ||
1183 | CORE_ADDR | |
1184 | read_pc (void) | |
1185 | { | |
39f77062 | 1186 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1187 | } |
1188 | ||
32178cab | 1189 | void |
39f77062 | 1190 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1191 | { |
32178cab | 1192 | if (PC_REGNUM >= 0) |
39f77062 | 1193 | write_register_pid (PC_REGNUM, pc, ptid); |
afb18d0f AC |
1194 | else |
1195 | internal_error (__FILE__, __LINE__, | |
1196 | "generic_target_write_pc"); | |
32178cab MS |
1197 | } |
1198 | ||
1199 | void | |
39f77062 | 1200 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1201 | { |
39f77062 | 1202 | ptid_t saved_inferior_ptid; |
32178cab | 1203 | |
39f77062 KB |
1204 | /* In case ptid != inferior_ptid. */ |
1205 | saved_inferior_ptid = inferior_ptid; | |
1206 | inferior_ptid = ptid; | |
32178cab | 1207 | |
39f77062 | 1208 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1209 | |
39f77062 | 1210 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1211 | } |
1212 | ||
1213 | void | |
1214 | write_pc (CORE_ADDR pc) | |
1215 | { | |
39f77062 | 1216 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1217 | } |
1218 | ||
1219 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1220 | ||
32178cab MS |
1221 | CORE_ADDR |
1222 | read_sp (void) | |
1223 | { | |
bd1ce8ba AC |
1224 | if (TARGET_READ_SP_P ()) |
1225 | return TARGET_READ_SP (); | |
a9e5fdc2 AC |
1226 | else if (gdbarch_unwind_sp_p (current_gdbarch)) |
1227 | return get_frame_sp (get_current_frame ()); | |
bd1ce8ba | 1228 | else if (SP_REGNUM >= 0) |
a9e5fdc2 AC |
1229 | /* Try SP_REGNUM last: this makes all sorts of [wrong] assumptions |
1230 | about the architecture so put it at the end. */ | |
bd1ce8ba AC |
1231 | return read_register (SP_REGNUM); |
1232 | internal_error (__FILE__, __LINE__, "read_sp: Unable to find SP"); | |
32178cab MS |
1233 | } |
1234 | ||
32178cab | 1235 | void |
b46e02f6 | 1236 | deprecated_write_sp (CORE_ADDR val) |
32178cab | 1237 | { |
b46e02f6 AC |
1238 | gdb_assert (SP_REGNUM >= 0); |
1239 | write_register (SP_REGNUM, val); | |
32178cab MS |
1240 | } |
1241 | ||
32178cab | 1242 | CORE_ADDR |
0ba6dca9 | 1243 | deprecated_read_fp (void) |
32178cab | 1244 | { |
0ba6dca9 AC |
1245 | if (DEPRECATED_TARGET_READ_FP_P ()) |
1246 | return DEPRECATED_TARGET_READ_FP (); | |
1247 | else if (DEPRECATED_FP_REGNUM >= 0) | |
1248 | return read_register (DEPRECATED_FP_REGNUM); | |
1249 | else | |
1250 | internal_error (__FILE__, __LINE__, "deprecated_read_fp"); | |
32178cab MS |
1251 | } |
1252 | ||
705152c5 MS |
1253 | static void |
1254 | reg_flush_command (char *command, int from_tty) | |
1255 | { | |
1256 | /* Force-flush the register cache. */ | |
1257 | registers_changed (); | |
1258 | if (from_tty) | |
1259 | printf_filtered ("Register cache flushed.\n"); | |
1260 | } | |
1261 | ||
32178cab MS |
1262 | static void |
1263 | build_regcache (void) | |
3fadccb3 AC |
1264 | { |
1265 | current_regcache = regcache_xmalloc (current_gdbarch); | |
2d28509a | 1266 | current_regcache->readonly_p = 0; |
524d7c18 | 1267 | deprecated_registers = deprecated_grub_regcache_for_registers (current_regcache); |
b923b08d | 1268 | deprecated_register_valid = current_regcache->register_valid_p; |
3fadccb3 AC |
1269 | } |
1270 | ||
af030b9a AC |
1271 | static void |
1272 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1273 | const unsigned char *buf, long len) | |
1274 | { | |
1275 | int i; | |
1276 | switch (endian) | |
1277 | { | |
1278 | case BFD_ENDIAN_BIG: | |
1279 | for (i = 0; i < len; i++) | |
1280 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1281 | break; | |
1282 | case BFD_ENDIAN_LITTLE: | |
1283 | for (i = len - 1; i >= 0; i--) | |
1284 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1285 | break; | |
1286 | default: | |
1287 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | enum regcache_dump_what | |
1292 | { | |
b59ff9d5 | 1293 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups |
af030b9a AC |
1294 | }; |
1295 | ||
1296 | static void | |
1297 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1298 | enum regcache_dump_what what_to_dump) | |
1299 | { | |
1300 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
b59ff9d5 | 1301 | struct gdbarch *gdbarch = regcache->descr->gdbarch; |
af030b9a AC |
1302 | int regnum; |
1303 | int footnote_nr = 0; | |
1304 | int footnote_register_size = 0; | |
1305 | int footnote_register_offset = 0; | |
1306 | int footnote_register_type_name_null = 0; | |
1307 | long register_offset = 0; | |
123a958e | 1308 | unsigned char buf[MAX_REGISTER_SIZE]; |
af030b9a AC |
1309 | |
1310 | #if 0 | |
af030b9a AC |
1311 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
1312 | regcache->descr->nr_raw_registers); | |
1313 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1314 | regcache->descr->nr_cooked_registers); | |
1315 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1316 | regcache->descr->sizeof_raw_registers); | |
1317 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1318 | regcache->descr->sizeof_raw_register_valid_p); | |
af030b9a AC |
1319 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); |
1320 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1321 | #endif | |
1322 | ||
1323 | gdb_assert (regcache->descr->nr_cooked_registers | |
1324 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1325 | ||
1326 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1327 | { | |
1328 | /* Name. */ | |
1329 | if (regnum < 0) | |
1330 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1331 | else | |
1332 | { | |
1333 | const char *p = REGISTER_NAME (regnum); | |
1334 | if (p == NULL) | |
1335 | p = ""; | |
1336 | else if (p[0] == '\0') | |
1337 | p = "''"; | |
1338 | fprintf_unfiltered (file, " %-10s", p); | |
1339 | } | |
1340 | ||
1341 | /* Number. */ | |
1342 | if (regnum < 0) | |
1343 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1344 | else | |
1345 | fprintf_unfiltered (file, " %4d", regnum); | |
1346 | ||
1347 | /* Relative number. */ | |
1348 | if (regnum < 0) | |
1349 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1350 | else if (regnum < NUM_REGS) | |
1351 | fprintf_unfiltered (file, " %4d", regnum); | |
1352 | else | |
1353 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1354 | ||
1355 | /* Offset. */ | |
1356 | if (regnum < 0) | |
1357 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1358 | else | |
1359 | { | |
1360 | fprintf_unfiltered (file, " %6ld", | |
1361 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 1362 | if (register_offset != regcache->descr->register_offset[regnum] |
62700349 | 1363 | || register_offset != DEPRECATED_REGISTER_BYTE (regnum) |
d3b22ed5 AC |
1364 | || (regnum > 0 |
1365 | && (regcache->descr->register_offset[regnum] | |
1366 | != (regcache->descr->register_offset[regnum - 1] | |
1367 | + regcache->descr->sizeof_register[regnum - 1]))) | |
1368 | ) | |
af030b9a AC |
1369 | { |
1370 | if (!footnote_register_offset) | |
1371 | footnote_register_offset = ++footnote_nr; | |
1372 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1373 | } | |
1374 | else | |
1375 | fprintf_unfiltered (file, " "); | |
1376 | register_offset = (regcache->descr->register_offset[regnum] | |
1377 | + regcache->descr->sizeof_register[regnum]); | |
1378 | } | |
1379 | ||
1380 | /* Size. */ | |
1381 | if (regnum < 0) | |
1382 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1383 | else | |
1384 | { | |
1385 | fprintf_unfiltered (file, " %5ld", | |
1386 | regcache->descr->sizeof_register[regnum]); | |
1387 | if ((regcache->descr->sizeof_register[regnum] | |
12c266ea | 1388 | != DEPRECATED_REGISTER_RAW_SIZE (regnum)) |
af030b9a | 1389 | || (regcache->descr->sizeof_register[regnum] |
f30992d4 | 1390 | != DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum)) |
af030b9a | 1391 | || (regcache->descr->sizeof_register[regnum] |
bb425013 AC |
1392 | != TYPE_LENGTH (register_type (regcache->descr->gdbarch, |
1393 | regnum))) | |
af030b9a AC |
1394 | ) |
1395 | { | |
1396 | if (!footnote_register_size) | |
1397 | footnote_register_size = ++footnote_nr; | |
1398 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1399 | } | |
1400 | else | |
1401 | fprintf_unfiltered (file, " "); | |
1402 | } | |
1403 | ||
1404 | /* Type. */ | |
b59ff9d5 AC |
1405 | { |
1406 | const char *t; | |
1407 | if (regnum < 0) | |
1408 | t = "Type"; | |
1409 | else | |
1410 | { | |
1411 | static const char blt[] = "builtin_type"; | |
1412 | t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum)); | |
1413 | if (t == NULL) | |
1414 | { | |
1415 | char *n; | |
1416 | if (!footnote_register_type_name_null) | |
1417 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1418 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1419 | make_cleanup (xfree, n); |
1420 | t = n; | |
1421 | } | |
1422 | /* Chop a leading builtin_type. */ | |
1423 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1424 | t += strlen (blt); | |
1425 | } | |
1426 | fprintf_unfiltered (file, " %-15s", t); | |
1427 | } | |
1428 | ||
1429 | /* Leading space always present. */ | |
1430 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1431 | |
1432 | /* Value, raw. */ | |
1433 | if (what_to_dump == regcache_dump_raw) | |
1434 | { | |
1435 | if (regnum < 0) | |
1436 | fprintf_unfiltered (file, "Raw value"); | |
1437 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1438 | fprintf_unfiltered (file, "<cooked>"); | |
1439 | else if (!regcache_valid_p (regcache, regnum)) | |
1440 | fprintf_unfiltered (file, "<invalid>"); | |
1441 | else | |
1442 | { | |
1443 | regcache_raw_read (regcache, regnum, buf); | |
1444 | fprintf_unfiltered (file, "0x"); | |
1445 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
12c266ea | 1446 | DEPRECATED_REGISTER_RAW_SIZE (regnum)); |
af030b9a AC |
1447 | } |
1448 | } | |
1449 | ||
1450 | /* Value, cooked. */ | |
1451 | if (what_to_dump == regcache_dump_cooked) | |
1452 | { | |
1453 | if (regnum < 0) | |
1454 | fprintf_unfiltered (file, "Cooked value"); | |
1455 | else | |
1456 | { | |
1457 | regcache_cooked_read (regcache, regnum, buf); | |
1458 | fprintf_unfiltered (file, "0x"); | |
1459 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
f30992d4 | 1460 | DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum)); |
af030b9a AC |
1461 | } |
1462 | } | |
1463 | ||
b59ff9d5 AC |
1464 | /* Group members. */ |
1465 | if (what_to_dump == regcache_dump_groups) | |
1466 | { | |
1467 | if (regnum < 0) | |
1468 | fprintf_unfiltered (file, "Groups"); | |
1469 | else | |
1470 | { | |
b59ff9d5 | 1471 | const char *sep = ""; |
6c7d17ba AC |
1472 | struct reggroup *group; |
1473 | for (group = reggroup_next (gdbarch, NULL); | |
1474 | group != NULL; | |
1475 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1476 | { |
6c7d17ba | 1477 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1478 | { |
6c7d17ba | 1479 | fprintf_unfiltered (file, "%s%s", sep, reggroup_name (group)); |
b59ff9d5 AC |
1480 | sep = ","; |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | } | |
1485 | ||
af030b9a AC |
1486 | fprintf_unfiltered (file, "\n"); |
1487 | } | |
1488 | ||
1489 | if (footnote_register_size) | |
1490 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1491 | footnote_register_size); | |
1492 | if (footnote_register_offset) | |
1493 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1494 | footnote_register_offset); | |
1495 | if (footnote_register_type_name_null) | |
1496 | fprintf_unfiltered (file, | |
1497 | "*%d: Register type's name NULL.\n", | |
1498 | footnote_register_type_name_null); | |
1499 | do_cleanups (cleanups); | |
1500 | } | |
1501 | ||
1502 | static void | |
1503 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1504 | { | |
1505 | if (args == NULL) | |
1506 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1507 | else | |
1508 | { | |
1509 | struct ui_file *file = gdb_fopen (args, "w"); | |
1510 | if (file == NULL) | |
1511 | perror_with_name ("maintenance print architecture"); | |
1512 | regcache_dump (current_regcache, file, what_to_dump); | |
1513 | ui_file_delete (file); | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | static void | |
1518 | maintenance_print_registers (char *args, int from_tty) | |
1519 | { | |
1520 | regcache_print (args, regcache_dump_none); | |
1521 | } | |
1522 | ||
1523 | static void | |
1524 | maintenance_print_raw_registers (char *args, int from_tty) | |
1525 | { | |
1526 | regcache_print (args, regcache_dump_raw); | |
1527 | } | |
1528 | ||
1529 | static void | |
1530 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1531 | { | |
1532 | regcache_print (args, regcache_dump_cooked); | |
1533 | } | |
1534 | ||
b59ff9d5 AC |
1535 | static void |
1536 | maintenance_print_register_groups (char *args, int from_tty) | |
1537 | { | |
1538 | regcache_print (args, regcache_dump_groups); | |
1539 | } | |
1540 | ||
b9362cc7 AC |
1541 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1542 | ||
32178cab MS |
1543 | void |
1544 | _initialize_regcache (void) | |
1545 | { | |
030f20e1 | 1546 | regcache_descr_handle = gdbarch_data_register_post_init (init_regcache_descr); |
046a4708 AC |
1547 | DEPRECATED_REGISTER_GDBARCH_SWAP (current_regcache); |
1548 | DEPRECATED_REGISTER_GDBARCH_SWAP (deprecated_registers); | |
1549 | DEPRECATED_REGISTER_GDBARCH_SWAP (deprecated_register_valid); | |
1550 | deprecated_register_gdbarch_swap (NULL, 0, build_regcache); | |
705152c5 | 1551 | |
f4c5303c OF |
1552 | observer_attach_target_changed (regcache_observer_target_changed); |
1553 | ||
705152c5 MS |
1554 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1555 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1556 | |
1557 | /* Initialize the thread/process associated with the current set of | |
1558 | registers. For now, -1 is special, and means `no current process'. */ | |
1559 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1560 | |
1561 | add_cmd ("registers", class_maintenance, | |
1562 | maintenance_print_registers, | |
1563 | "Print the internal register configuration.\ | |
1564 | Takes an optional file parameter.", | |
1565 | &maintenanceprintlist); | |
1566 | add_cmd ("raw-registers", class_maintenance, | |
1567 | maintenance_print_raw_registers, | |
1568 | "Print the internal register configuration including raw values.\ | |
1569 | Takes an optional file parameter.", | |
1570 | &maintenanceprintlist); | |
1571 | add_cmd ("cooked-registers", class_maintenance, | |
1572 | maintenance_print_cooked_registers, | |
1573 | "Print the internal register configuration including cooked values.\ | |
b59ff9d5 AC |
1574 | Takes an optional file parameter.", |
1575 | &maintenanceprintlist); | |
1576 | add_cmd ("register-groups", class_maintenance, | |
1577 | maintenance_print_register_groups, | |
1578 | "Print the internal register configuration including each register's group.\ | |
af030b9a AC |
1579 | Takes an optional file parameter.", |
1580 | &maintenanceprintlist); | |
1581 | ||
32178cab | 1582 | } |