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" |
b59ff9d5 | 29 | #include "reggroups.h" |
61a0eb5b | 30 | #include "gdb_assert.h" |
b66d6d2e | 31 | #include "gdb_string.h" |
af030b9a | 32 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
32178cab MS |
33 | |
34 | /* | |
35 | * DATA STRUCTURE | |
36 | * | |
37 | * Here is the actual register cache. | |
38 | */ | |
39 | ||
3fadccb3 AC |
40 | /* Per-architecture object describing the layout of a register cache. |
41 | Computed once when the architecture is created */ | |
42 | ||
43 | struct gdbarch_data *regcache_descr_handle; | |
44 | ||
45 | struct regcache_descr | |
46 | { | |
47 | /* The architecture this descriptor belongs to. */ | |
48 | struct gdbarch *gdbarch; | |
49 | ||
50 | /* Is this a ``legacy'' register cache? Such caches reserve space | |
51 | for raw and pseudo registers and allow access to both. */ | |
52 | int legacy_p; | |
53 | ||
54 | /* The raw register cache. This should contain just [0 | |
55 | .. NUM_RAW_REGISTERS). However, for older targets, it contains | |
56 | space for the full [0 .. NUM_RAW_REGISTERS + | |
57 | NUM_PSEUDO_REGISTERS). */ | |
58 | int nr_raw_registers; | |
59 | long sizeof_raw_registers; | |
60 | long sizeof_raw_register_valid_p; | |
61 | ||
d138e37a AC |
62 | /* The cooked register space. Each cooked register in the range |
63 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
64 | register. The remaining [NR_RAW_REGISTERS | |
65 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo regiters) are mapped onto | |
66 | both raw registers and memory by the architecture methods | |
67 | gdbarch_register_read and gdbarch_register_write. */ | |
68 | int nr_cooked_registers; | |
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 | |
d138e37a AC |
79 | /* Useful constant. Largest of all the registers. */ |
80 | long max_register_size; | |
bb425013 AC |
81 | |
82 | /* Cached table containing the type of each register. */ | |
83 | struct type **register_type; | |
3fadccb3 AC |
84 | }; |
85 | ||
bb425013 AC |
86 | void |
87 | init_legacy_regcache_descr (struct gdbarch *gdbarch, | |
88 | struct regcache_descr *descr) | |
3fadccb3 AC |
89 | { |
90 | int i; | |
3fadccb3 AC |
91 | /* FIXME: cagney/2002-05-11: gdbarch_data() should take that |
92 | ``gdbarch'' as a parameter. */ | |
93 | gdb_assert (gdbarch != NULL); | |
94 | ||
3fadccb3 AC |
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_raw_registers = descr->nr_cooked_registers; |
98 | descr->sizeof_raw_register_valid_p = descr->nr_cooked_registers; | |
3fadccb3 AC |
99 | |
100 | /* FIXME: cagney/2002-05-11: Instead of using REGISTER_BYTE() this | |
101 | code should compute the offets et.al. at runtime. This currently | |
102 | isn't possible because some targets overlap register locations - | |
103 | see the mess in read_register_bytes() and write_register_bytes() | |
104 | registers. */ | |
d138e37a AC |
105 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
106 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 107 | descr->max_register_size = 0; |
d138e37a | 108 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
109 | { |
110 | descr->register_offset[i] = REGISTER_BYTE (i); | |
111 | descr->sizeof_register[i] = REGISTER_RAW_SIZE (i); | |
112 | if (descr->max_register_size < REGISTER_RAW_SIZE (i)) | |
113 | descr->max_register_size = REGISTER_RAW_SIZE (i); | |
0ed04cce AC |
114 | if (descr->max_register_size < REGISTER_VIRTUAL_SIZE (i)) |
115 | descr->max_register_size = REGISTER_VIRTUAL_SIZE (i); | |
3fadccb3 AC |
116 | } |
117 | ||
118 | /* Come up with the real size of the registers buffer. */ | |
119 | descr->sizeof_raw_registers = REGISTER_BYTES; /* OK use. */ | |
d138e37a | 120 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
121 | { |
122 | long regend; | |
123 | /* Keep extending the buffer so that there is always enough | |
124 | space for all registers. The comparison is necessary since | |
125 | legacy code is free to put registers in random places in the | |
126 | buffer separated by holes. Once REGISTER_BYTE() is killed | |
127 | this can be greatly simplified. */ | |
128 | /* FIXME: cagney/2001-12-04: This code shouldn't need to use | |
129 | REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the | |
130 | buffer out so that certain registers just happen to overlap. | |
131 | Ulgh! New targets use gdbarch's register read/write and | |
132 | entirely avoid this uglyness. */ | |
133 | regend = descr->register_offset[i] + descr->sizeof_register[i]; | |
134 | if (descr->sizeof_raw_registers < regend) | |
135 | descr->sizeof_raw_registers = regend; | |
136 | } | |
3fadccb3 AC |
137 | } |
138 | ||
139 | static void * | |
140 | init_regcache_descr (struct gdbarch *gdbarch) | |
141 | { | |
142 | int i; | |
143 | struct regcache_descr *descr; | |
144 | gdb_assert (gdbarch != NULL); | |
145 | ||
bb425013 AC |
146 | /* Create an initial, zero filled, table. */ |
147 | descr = XCALLOC (1, struct regcache_descr); | |
3fadccb3 | 148 | descr->gdbarch = gdbarch; |
3fadccb3 | 149 | |
d138e37a AC |
150 | /* Total size of the register space. The raw registers are mapped |
151 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 152 | either mapped onto raw-registers or memory. */ |
d138e37a | 153 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 | 154 | |
bb425013 AC |
155 | /* Fill in a table of register types. */ |
156 | descr->register_type = XCALLOC (descr->nr_cooked_registers, | |
157 | struct type *); | |
158 | for (i = 0; i < descr->nr_cooked_registers; i++) | |
159 | { | |
160 | descr->register_type[i] = REGISTER_VIRTUAL_TYPE (i); | |
161 | } | |
162 | ||
163 | /* If an old style architecture, fill in the remainder of the | |
164 | register cache descriptor using the register macros. */ | |
165 | if (!gdbarch_pseudo_register_read_p (gdbarch) | |
166 | && !gdbarch_pseudo_register_write_p (gdbarch)) | |
167 | { | |
168 | descr->legacy_p = 1; | |
169 | init_legacy_regcache_descr (gdbarch, descr); | |
170 | return descr; | |
171 | } | |
172 | ||
3fadccb3 AC |
173 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
174 | into the register cache. */ | |
175 | descr->nr_raw_registers = NUM_REGS; | |
53826de9 AC |
176 | |
177 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
178 | array. This pretects GDB from erant code that accesses elements | |
179 | of the global register_valid_p[] array in the range [NUM_REGS | |
180 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
181 | descr->sizeof_raw_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; | |
3fadccb3 AC |
182 | |
183 | /* Lay out the register cache. The pseud-registers are included in | |
184 | the layout even though their value isn't stored in the register | |
185 | cache. Some code, via read_register_bytes() access a register | |
186 | using an offset/length rather than a register number. | |
187 | ||
bb425013 AC |
188 | NOTE: cagney/2002-05-22: Only register_type() is used when |
189 | constructing the register cache. It is assumed that the | |
190 | register's raw size, virtual size and type length are all the | |
191 | same. */ | |
3fadccb3 AC |
192 | |
193 | { | |
194 | long offset = 0; | |
d138e37a AC |
195 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
196 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 197 | descr->max_register_size = 0; |
d138e37a | 198 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 199 | { |
bb425013 | 200 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
201 | descr->register_offset[i] = offset; |
202 | offset += descr->sizeof_register[i]; | |
203 | if (descr->max_register_size < descr->sizeof_register[i]) | |
204 | descr->max_register_size = descr->sizeof_register[i]; | |
205 | } | |
206 | /* Set the real size of the register cache buffer. */ | |
207 | /* FIXME: cagney/2002-05-22: Should only need to allocate space | |
208 | for the raw registers. Unfortunatly some code still accesses | |
209 | the register array directly using the global registers[]. | |
210 | Until that code has been purged, play safe and over allocating | |
211 | the register buffer. Ulgh! */ | |
212 | descr->sizeof_raw_registers = offset; | |
213 | /* = descr->register_offset[descr->nr_raw_registers]; */ | |
214 | } | |
215 | ||
216 | #if 0 | |
217 | /* Sanity check. Confirm that the assumptions about gdbarch are | |
218 | true. The REGCACHE_DESCR_HANDLE is set before doing the checks | |
219 | so that targets using the generic methods supplied by regcache | |
220 | don't go into infinite recursion trying to, again, create the | |
221 | regcache. */ | |
222 | set_gdbarch_data (gdbarch, regcache_descr_handle, descr); | |
d138e37a | 223 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
224 | { |
225 | gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i)); | |
226 | gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i)); | |
227 | gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i)); | |
228 | } | |
229 | /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */ | |
230 | #endif | |
231 | ||
232 | return descr; | |
233 | } | |
234 | ||
235 | static struct regcache_descr * | |
236 | regcache_descr (struct gdbarch *gdbarch) | |
237 | { | |
238 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
239 | } | |
240 | ||
241 | static void | |
242 | xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr) | |
243 | { | |
244 | struct regcache_descr *descr = ptr; | |
245 | if (descr == NULL) | |
246 | return; | |
247 | xfree (descr->register_offset); | |
248 | xfree (descr->sizeof_register); | |
249 | descr->register_offset = NULL; | |
250 | descr->sizeof_register = NULL; | |
251 | xfree (descr); | |
252 | } | |
253 | ||
bb425013 AC |
254 | /* Utility functions returning useful register attributes stored in |
255 | the regcache descr. */ | |
256 | ||
257 | struct type * | |
258 | register_type (struct gdbarch *gdbarch, int regnum) | |
259 | { | |
260 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
261 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
262 | return descr->register_type[regnum]; | |
263 | } | |
264 | ||
0ed04cce AC |
265 | /* Utility functions returning useful register attributes stored in |
266 | the regcache descr. */ | |
267 | ||
268 | int | |
269 | max_register_size (struct gdbarch *gdbarch) | |
270 | { | |
271 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
272 | return descr->max_register_size; | |
273 | } | |
274 | ||
3fadccb3 AC |
275 | /* The register cache for storing raw register values. */ |
276 | ||
277 | struct regcache | |
278 | { | |
279 | struct regcache_descr *descr; | |
280 | char *raw_registers; | |
281 | char *raw_register_valid_p; | |
282 | /* If a value isn't in the cache should the corresponding target be | |
283 | queried for a value. */ | |
284 | int passthrough_p; | |
285 | }; | |
286 | ||
287 | struct regcache * | |
288 | regcache_xmalloc (struct gdbarch *gdbarch) | |
289 | { | |
290 | struct regcache_descr *descr; | |
291 | struct regcache *regcache; | |
292 | gdb_assert (gdbarch != NULL); | |
293 | descr = regcache_descr (gdbarch); | |
294 | regcache = XMALLOC (struct regcache); | |
295 | regcache->descr = descr; | |
296 | regcache->raw_registers | |
297 | = XCALLOC (descr->sizeof_raw_registers, char); | |
298 | regcache->raw_register_valid_p | |
299 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); | |
300 | regcache->passthrough_p = 0; | |
301 | return regcache; | |
302 | } | |
303 | ||
304 | void | |
305 | regcache_xfree (struct regcache *regcache) | |
306 | { | |
307 | if (regcache == NULL) | |
308 | return; | |
309 | xfree (regcache->raw_registers); | |
310 | xfree (regcache->raw_register_valid_p); | |
311 | xfree (regcache); | |
312 | } | |
313 | ||
36160dc4 AC |
314 | void |
315 | do_regcache_xfree (void *data) | |
316 | { | |
317 | regcache_xfree (data); | |
318 | } | |
319 | ||
320 | struct cleanup * | |
321 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
322 | { | |
323 | return make_cleanup (do_regcache_xfree, regcache); | |
324 | } | |
325 | ||
3fadccb3 AC |
326 | void |
327 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
328 | { | |
329 | int i; | |
330 | char *buf; | |
331 | gdb_assert (src != NULL && dst != NULL); | |
332 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
333 | gdb_assert (src != dst); | |
334 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
335 | It keeps the existing code working where things rely on going | |
336 | through to the register cache. */ | |
337 | if (src == current_regcache && src->descr->legacy_p) | |
338 | { | |
339 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
340 | untangle fetch. */ | |
341 | read_register_bytes (0, dst->raw_registers, REGISTER_BYTES); | |
342 | return; | |
343 | } | |
344 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
345 | It keeps the existing code working where things rely on going | |
346 | through to the register cache. */ | |
347 | if (dst == current_regcache && dst->descr->legacy_p) | |
348 | { | |
349 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
350 | untangle fetch. */ | |
351 | write_register_bytes (0, src->raw_registers, REGISTER_BYTES); | |
352 | return; | |
353 | } | |
354 | buf = alloca (src->descr->max_register_size); | |
355 | for (i = 0; i < src->descr->nr_raw_registers; i++) | |
356 | { | |
357 | /* Should we worry about the valid bit here? */ | |
0818c12a AC |
358 | regcache_raw_read (src, i, buf); |
359 | regcache_raw_write (dst, i, buf); | |
3fadccb3 AC |
360 | } |
361 | } | |
362 | ||
363 | void | |
364 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
365 | { | |
366 | int i; | |
367 | gdb_assert (src != NULL && dst != NULL); | |
368 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
369 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
370 | move of data into the current_regcache(). Doing this would be | |
371 | silly - it would mean that valid_p would be completly invalid. */ | |
372 | gdb_assert (dst != current_regcache); | |
373 | memcpy (dst->raw_registers, src->raw_registers, | |
374 | dst->descr->sizeof_raw_registers); | |
375 | memcpy (dst->raw_register_valid_p, src->raw_register_valid_p, | |
376 | dst->descr->sizeof_raw_register_valid_p); | |
377 | } | |
378 | ||
379 | struct regcache * | |
380 | regcache_dup (struct regcache *src) | |
381 | { | |
382 | struct regcache *newbuf; | |
383 | gdb_assert (current_regcache != NULL); | |
384 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
385 | regcache_cpy (newbuf, src); | |
386 | return newbuf; | |
387 | } | |
388 | ||
389 | struct regcache * | |
390 | regcache_dup_no_passthrough (struct regcache *src) | |
391 | { | |
392 | struct regcache *newbuf; | |
393 | gdb_assert (current_regcache != NULL); | |
394 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
395 | regcache_cpy_no_passthrough (newbuf, src); | |
396 | return newbuf; | |
397 | } | |
398 | ||
399 | int | |
400 | regcache_valid_p (struct regcache *regcache, int regnum) | |
401 | { | |
402 | gdb_assert (regcache != NULL); | |
403 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
404 | return regcache->raw_register_valid_p[regnum]; | |
405 | } | |
406 | ||
3fadccb3 AC |
407 | char * |
408 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
409 | { | |
410 | return regcache->raw_registers; | |
411 | } | |
412 | ||
413 | char * | |
414 | deprecated_grub_regcache_for_register_valid (struct regcache *regcache) | |
415 | { | |
416 | return regcache->raw_register_valid_p; | |
417 | } | |
418 | ||
419 | /* Global structure containing the current regcache. */ | |
420 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
8262ee23 | 421 | deprecated_register_valid[] currently point into this structure. */ |
3fadccb3 AC |
422 | struct regcache *current_regcache; |
423 | ||
5ebd2499 | 424 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
425 | recording if the register values have been changed (eg. by the |
426 | user). Therefore all registers must be written back to the | |
427 | target when appropriate. */ | |
428 | ||
429 | /* REGISTERS contains the cached register values (in target byte order). */ | |
430 | ||
431 | char *registers; | |
432 | ||
8262ee23 | 433 | /* DEPRECATED_REGISTER_VALID is 0 if the register needs to be fetched, |
32178cab MS |
434 | 1 if it has been fetched, and |
435 | -1 if the register value was not available. | |
c97dcfc7 AC |
436 | |
437 | "Not available" indicates that the target is not not able to supply | |
438 | the register at this state. The register may become available at a | |
439 | later time (after the next resume). This often occures when GDB is | |
440 | manipulating a target that contains only a snapshot of the entire | |
441 | system being debugged - some of the registers in such a system may | |
442 | not have been saved. */ | |
32178cab | 443 | |
8262ee23 | 444 | signed char *deprecated_register_valid; |
32178cab | 445 | |
39f77062 | 446 | /* The thread/process associated with the current set of registers. */ |
32178cab | 447 | |
39f77062 | 448 | static ptid_t registers_ptid; |
32178cab MS |
449 | |
450 | /* | |
451 | * FUNCTIONS: | |
452 | */ | |
453 | ||
454 | /* REGISTER_CACHED() | |
455 | ||
456 | Returns 0 if the value is not in the cache (needs fetch). | |
457 | >0 if the value is in the cache. | |
458 | <0 if the value is permanently unavailable (don't ask again). */ | |
459 | ||
460 | int | |
461 | register_cached (int regnum) | |
462 | { | |
8262ee23 | 463 | return deprecated_register_valid[regnum]; |
32178cab MS |
464 | } |
465 | ||
7302a204 ND |
466 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
467 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
468 | ||
469 | void | |
470 | set_register_cached (int regnum, int state) | |
471 | { | |
53826de9 AC |
472 | gdb_assert (regnum >= 0); |
473 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
474 | current_regcache->raw_register_valid_p[regnum] = state; | |
7302a204 ND |
475 | } |
476 | ||
2dc4e391 DT |
477 | /* REGISTER_CHANGED |
478 | ||
479 | invalidate a single register REGNUM in the cache */ | |
480 | void | |
481 | register_changed (int regnum) | |
482 | { | |
7302a204 ND |
483 | set_register_cached (regnum, 0); |
484 | } | |
485 | ||
486 | /* If REGNUM >= 0, return a pointer to register REGNUM's cache buffer area, | |
487 | else return a pointer to the start of the cache buffer. */ | |
488 | ||
193cb69f | 489 | static char * |
3fadccb3 | 490 | register_buffer (struct regcache *regcache, int regnum) |
7302a204 | 491 | { |
3fadccb3 | 492 | return regcache->raw_registers + regcache->descr->register_offset[regnum]; |
7302a204 ND |
493 | } |
494 | ||
495 | /* Return whether register REGNUM is a real register. */ | |
496 | ||
497 | static int | |
498 | real_register (int regnum) | |
499 | { | |
500 | return regnum >= 0 && regnum < NUM_REGS; | |
501 | } | |
502 | ||
32178cab MS |
503 | /* Low level examining and depositing of registers. |
504 | ||
505 | The caller is responsible for making sure that the inferior is | |
506 | stopped before calling the fetching routines, or it will get | |
507 | garbage. (a change from GDB version 3, in which the caller got the | |
508 | value from the last stop). */ | |
509 | ||
510 | /* REGISTERS_CHANGED () | |
511 | ||
512 | Indicate that registers may have changed, so invalidate the cache. */ | |
513 | ||
514 | void | |
515 | registers_changed (void) | |
516 | { | |
517 | int i; | |
32178cab | 518 | |
39f77062 | 519 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
520 | |
521 | /* Force cleanup of any alloca areas if using C alloca instead of | |
522 | a builtin alloca. This particular call is used to clean up | |
523 | areas allocated by low level target code which may build up | |
524 | during lengthy interactions between gdb and the target before | |
525 | gdb gives control to the user (ie watchpoints). */ | |
526 | alloca (0); | |
527 | ||
53826de9 | 528 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 529 | set_register_cached (i, 0); |
32178cab MS |
530 | |
531 | if (registers_changed_hook) | |
532 | registers_changed_hook (); | |
533 | } | |
534 | ||
535 | /* REGISTERS_FETCHED () | |
536 | ||
537 | Indicate that all registers have been fetched, so mark them all valid. */ | |
538 | ||
31e9866e AC |
539 | /* NOTE: cagney/2001-12-04: This function does not set valid on the |
540 | pseudo-register range since pseudo registers are always supplied | |
541 | using supply_register(). */ | |
542 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target | |
543 | code was blatting the registers[] array and then calling this. | |
544 | Since targets should only be using supply_register() the need for | |
545 | this function/hack is eliminated. */ | |
32178cab MS |
546 | |
547 | void | |
548 | registers_fetched (void) | |
549 | { | |
550 | int i; | |
32178cab | 551 | |
a728f042 | 552 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 553 | set_register_cached (i, 1); |
fcdc5976 | 554 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 555 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
556 | } |
557 | ||
558 | /* read_register_bytes and write_register_bytes are generally a *BAD* | |
559 | idea. They are inefficient because they need to check for partial | |
560 | updates, which can only be done by scanning through all of the | |
561 | registers and seeing if the bytes that are being read/written fall | |
562 | inside of an invalid register. [The main reason this is necessary | |
563 | is that register sizes can vary, so a simple index won't suffice.] | |
564 | It is far better to call read_register_gen and write_register_gen | |
565 | if you want to get at the raw register contents, as it only takes a | |
5ebd2499 | 566 | regnum as an argument, and therefore can't do a partial register |
32178cab MS |
567 | update. |
568 | ||
569 | Prior to the recent fixes to check for partial updates, both read | |
570 | and write_register_bytes always checked to see if any registers | |
571 | were stale, and then called target_fetch_registers (-1) to update | |
572 | the whole set. This caused really slowed things down for remote | |
573 | targets. */ | |
574 | ||
575 | /* Copy INLEN bytes of consecutive data from registers | |
576 | starting with the INREGBYTE'th byte of register data | |
577 | into memory at MYADDR. */ | |
578 | ||
579 | void | |
61a0eb5b | 580 | read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 581 | { |
61a0eb5b | 582 | int in_end = in_start + in_len; |
5ebd2499 | 583 | int regnum; |
61a0eb5b | 584 | char *reg_buf = alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
585 | |
586 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
587 | update just those registers. */ | |
588 | ||
5ebd2499 | 589 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 590 | { |
61a0eb5b AC |
591 | int reg_start; |
592 | int reg_end; | |
593 | int reg_len; | |
594 | int start; | |
595 | int end; | |
596 | int byte; | |
32178cab | 597 | |
61a0eb5b AC |
598 | reg_start = REGISTER_BYTE (regnum); |
599 | reg_len = REGISTER_RAW_SIZE (regnum); | |
600 | reg_end = reg_start + reg_len; | |
32178cab | 601 | |
61a0eb5b | 602 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 603 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
604 | continue; |
605 | ||
275f450c AC |
606 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
607 | /* Force the cache to fetch the entire register. */ | |
4caf0990 | 608 | deprecated_read_register_gen (regnum, reg_buf); |
275f450c AC |
609 | else |
610 | /* Legacy note: even though this register is ``invalid'' we | |
611 | still need to return something. It would appear that some | |
612 | code relies on apparent gaps in the register array also | |
613 | being returned. */ | |
614 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
615 | the entire register read/write flow of control. Must | |
616 | resist temptation to return 0xdeadbeef. */ | |
617 | memcpy (reg_buf, registers + reg_start, reg_len); | |
32178cab | 618 | |
61a0eb5b AC |
619 | /* Legacy note: This function, for some reason, allows a NULL |
620 | input buffer. If the buffer is NULL, the registers are still | |
621 | fetched, just the final transfer is skipped. */ | |
622 | if (in_buf == NULL) | |
623 | continue; | |
624 | ||
625 | /* start = max (reg_start, in_start) */ | |
626 | if (reg_start > in_start) | |
627 | start = reg_start; | |
628 | else | |
629 | start = in_start; | |
630 | ||
631 | /* end = min (reg_end, in_end) */ | |
632 | if (reg_end < in_end) | |
633 | end = reg_end; | |
634 | else | |
635 | end = in_end; | |
636 | ||
637 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
638 | for (byte = start; byte < end; byte++) | |
165cd47f | 639 | { |
61a0eb5b | 640 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 641 | } |
32178cab | 642 | } |
32178cab MS |
643 | } |
644 | ||
5ebd2499 ND |
645 | /* Read register REGNUM into memory at MYADDR, which must be large |
646 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
647 | register is known to be the size of a CORE_ADDR or smaller, |
648 | read_register can be used instead. */ | |
649 | ||
61a0eb5b AC |
650 | static void |
651 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 652 | { |
61a0eb5b | 653 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 654 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
655 | { |
656 | registers_changed (); | |
39f77062 | 657 | registers_ptid = inferior_ptid; |
32178cab MS |
658 | } |
659 | ||
7302a204 | 660 | if (!register_cached (regnum)) |
5c27f28a | 661 | target_fetch_registers (regnum); |
7302a204 | 662 | |
3fadccb3 | 663 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
5ebd2499 | 664 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
665 | } |
666 | ||
61a0eb5b | 667 | void |
1aaa5f99 | 668 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 669 | { |
3fadccb3 AC |
670 | gdb_assert (regcache != NULL && buf != NULL); |
671 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
672 | if (regcache->descr->legacy_p | |
673 | && regcache->passthrough_p) | |
674 | { | |
675 | gdb_assert (regcache == current_regcache); | |
676 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
677 | silently and very indirectly updates the regcache's regcache | |
8262ee23 | 678 | via the global deprecated_register_valid[]. */ |
3fadccb3 AC |
679 | legacy_read_register_gen (regnum, buf); |
680 | return; | |
681 | } | |
682 | /* Make certain that the register cache is up-to-date with respect | |
683 | to the current thread. This switching shouldn't be necessary | |
684 | only there is still only one target side register cache. Sigh! | |
685 | On the bright side, at least there is a regcache object. */ | |
686 | if (regcache->passthrough_p) | |
687 | { | |
688 | gdb_assert (regcache == current_regcache); | |
689 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
690 | { | |
691 | registers_changed (); | |
692 | registers_ptid = inferior_ptid; | |
693 | } | |
694 | if (!register_cached (regnum)) | |
5c27f28a | 695 | target_fetch_registers (regnum); |
3fadccb3 AC |
696 | } |
697 | /* Copy the value directly into the register cache. */ | |
698 | memcpy (buf, (regcache->raw_registers | |
699 | + regcache->descr->register_offset[regnum]), | |
700 | regcache->descr->sizeof_register[regnum]); | |
61a0eb5b AC |
701 | } |
702 | ||
28fc6740 AC |
703 | void |
704 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
705 | { | |
706 | char *buf; | |
707 | gdb_assert (regcache != NULL); | |
708 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
709 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
710 | regcache_raw_read (regcache, regnum, buf); | |
711 | (*val) = extract_signed_integer (buf, | |
712 | regcache->descr->sizeof_register[regnum]); | |
713 | } | |
714 | ||
715 | void | |
716 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
717 | ULONGEST *val) | |
718 | { | |
719 | char *buf; | |
720 | gdb_assert (regcache != NULL); | |
721 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
722 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
723 | regcache_raw_read (regcache, regnum, buf); | |
724 | (*val) = extract_unsigned_integer (buf, | |
725 | regcache->descr->sizeof_register[regnum]); | |
726 | } | |
727 | ||
c00dcbe9 MK |
728 | void |
729 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
730 | { | |
731 | void *buf; | |
732 | gdb_assert (regcache != NULL); | |
733 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
734 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
735 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
736 | regcache_raw_write (regcache, regnum, buf); | |
737 | } | |
738 | ||
739 | void | |
740 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
741 | ULONGEST val) | |
742 | { | |
743 | void *buf; | |
744 | gdb_assert (regcache != NULL); | |
745 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
746 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
747 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
748 | regcache_raw_write (regcache, regnum, buf); | |
749 | } | |
750 | ||
61a0eb5b | 751 | void |
4caf0990 | 752 | deprecated_read_register_gen (int regnum, char *buf) |
61a0eb5b | 753 | { |
3fadccb3 AC |
754 | gdb_assert (current_regcache != NULL); |
755 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
756 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
757 | { |
758 | legacy_read_register_gen (regnum, buf); | |
759 | return; | |
760 | } | |
68365089 AC |
761 | regcache_cooked_read (current_regcache, regnum, buf); |
762 | } | |
763 | ||
764 | void | |
29e1842b | 765 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 766 | { |
d138e37a | 767 | gdb_assert (regnum >= 0); |
68365089 AC |
768 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
769 | if (regnum < regcache->descr->nr_raw_registers) | |
770 | regcache_raw_read (regcache, regnum, buf); | |
d138e37a | 771 | else |
68365089 AC |
772 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
773 | regnum, buf); | |
61a0eb5b AC |
774 | } |
775 | ||
a378f419 AC |
776 | void |
777 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
778 | LONGEST *val) | |
779 | { | |
780 | char *buf; | |
781 | gdb_assert (regcache != NULL); | |
782 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
783 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
784 | regcache_cooked_read (regcache, regnum, buf); | |
785 | (*val) = extract_signed_integer (buf, | |
786 | regcache->descr->sizeof_register[regnum]); | |
787 | } | |
788 | ||
789 | void | |
790 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
791 | ULONGEST *val) | |
792 | { | |
793 | char *buf; | |
794 | gdb_assert (regcache != NULL); | |
795 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
796 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
797 | regcache_cooked_read (regcache, regnum, buf); | |
798 | (*val) = extract_unsigned_integer (buf, | |
799 | regcache->descr->sizeof_register[regnum]); | |
800 | } | |
801 | ||
5ebd2499 ND |
802 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
803 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 804 | |
61a0eb5b | 805 | static void |
1aaa5f99 | 806 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
807 | { |
808 | int size; | |
61a0eb5b | 809 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
810 | |
811 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
812 | change the registers array if something writes to this register. */ | |
5ebd2499 | 813 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
814 | return; |
815 | ||
39f77062 | 816 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
817 | { |
818 | registers_changed (); | |
39f77062 | 819 | registers_ptid = inferior_ptid; |
32178cab MS |
820 | } |
821 | ||
5ebd2499 | 822 | size = REGISTER_RAW_SIZE (regnum); |
32178cab | 823 | |
7302a204 | 824 | if (real_register (regnum)) |
1297a2f0 MS |
825 | { |
826 | /* If we have a valid copy of the register, and new value == old | |
827 | value, then don't bother doing the actual store. */ | |
828 | if (register_cached (regnum) | |
3fadccb3 AC |
829 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
830 | == 0)) | |
1297a2f0 MS |
831 | return; |
832 | else | |
833 | target_prepare_to_store (); | |
834 | } | |
32178cab | 835 | |
3fadccb3 | 836 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 837 | |
7302a204 | 838 | set_register_cached (regnum, 1); |
5c27f28a | 839 | target_store_registers (regnum); |
32178cab MS |
840 | } |
841 | ||
61a0eb5b | 842 | void |
1aaa5f99 | 843 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 844 | { |
3fadccb3 AC |
845 | gdb_assert (regcache != NULL && buf != NULL); |
846 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
847 | ||
848 | if (regcache->passthrough_p | |
849 | && regcache->descr->legacy_p) | |
850 | { | |
851 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
852 | silently and very indirectly updates the regcache's buffers | |
8262ee23 | 853 | via the globals deprecated_register_valid[] and registers[]. */ |
3fadccb3 AC |
854 | gdb_assert (regcache == current_regcache); |
855 | legacy_write_register_gen (regnum, buf); | |
856 | return; | |
857 | } | |
858 | ||
859 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
860 | change the registers array if something writes to this register. */ | |
861 | if (CANNOT_STORE_REGISTER (regnum)) | |
862 | return; | |
863 | ||
864 | /* Handle the simple case first -> not write through so just store | |
865 | value in cache. */ | |
866 | if (!regcache->passthrough_p) | |
867 | { | |
868 | memcpy ((regcache->raw_registers | |
869 | + regcache->descr->register_offset[regnum]), buf, | |
870 | regcache->descr->sizeof_register[regnum]); | |
871 | regcache->raw_register_valid_p[regnum] = 1; | |
872 | return; | |
873 | } | |
874 | ||
875 | /* Make certain that the correct cache is selected. */ | |
876 | gdb_assert (regcache == current_regcache); | |
877 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
878 | { | |
879 | registers_changed (); | |
880 | registers_ptid = inferior_ptid; | |
881 | } | |
882 | ||
883 | /* If we have a valid copy of the register, and new value == old | |
884 | value, then don't bother doing the actual store. */ | |
885 | if (regcache_valid_p (regcache, regnum) | |
886 | && (memcmp (register_buffer (regcache, regnum), buf, | |
887 | regcache->descr->sizeof_register[regnum]) == 0)) | |
888 | return; | |
889 | ||
890 | target_prepare_to_store (); | |
891 | memcpy (register_buffer (regcache, regnum), buf, | |
892 | regcache->descr->sizeof_register[regnum]); | |
893 | regcache->raw_register_valid_p[regnum] = 1; | |
5c27f28a | 894 | target_store_registers (regnum); |
61a0eb5b AC |
895 | } |
896 | ||
897 | void | |
4caf0990 | 898 | deprecated_write_register_gen (int regnum, char *buf) |
61a0eb5b | 899 | { |
3fadccb3 AC |
900 | gdb_assert (current_regcache != NULL); |
901 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
902 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
903 | { |
904 | legacy_write_register_gen (regnum, buf); | |
905 | return; | |
906 | } | |
68365089 AC |
907 | regcache_cooked_write (current_regcache, regnum, buf); |
908 | } | |
909 | ||
910 | void | |
29e1842b | 911 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 912 | { |
d138e37a | 913 | gdb_assert (regnum >= 0); |
68365089 AC |
914 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
915 | if (regnum < regcache->descr->nr_raw_registers) | |
916 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 917 | else |
68365089 | 918 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 919 | regnum, buf); |
61a0eb5b AC |
920 | } |
921 | ||
32178cab MS |
922 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
923 | into registers starting with the MYREGSTART'th byte of register data. */ | |
924 | ||
925 | void | |
926 | write_register_bytes (int myregstart, char *myaddr, int inlen) | |
927 | { | |
928 | int myregend = myregstart + inlen; | |
5ebd2499 | 929 | int regnum; |
32178cab MS |
930 | |
931 | target_prepare_to_store (); | |
932 | ||
933 | /* Scan through the registers updating any that are covered by the | |
934 | range myregstart<=>myregend using write_register_gen, which does | |
935 | nice things like handling threads, and avoiding updates when the | |
936 | new and old contents are the same. */ | |
937 | ||
5ebd2499 | 938 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
939 | { |
940 | int regstart, regend; | |
941 | ||
5ebd2499 ND |
942 | regstart = REGISTER_BYTE (regnum); |
943 | regend = regstart + REGISTER_RAW_SIZE (regnum); | |
32178cab MS |
944 | |
945 | /* Is this register completely outside the range the user is writing? */ | |
946 | if (myregend <= regstart || regend <= myregstart) | |
947 | /* do nothing */ ; | |
948 | ||
949 | /* Is this register completely within the range the user is writing? */ | |
950 | else if (myregstart <= regstart && regend <= myregend) | |
4caf0990 | 951 | deprecated_write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
952 | |
953 | /* The register partially overlaps the range being written. */ | |
954 | else | |
955 | { | |
e6cbd02a | 956 | char *regbuf = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
957 | /* What's the overlap between this register's bytes and |
958 | those the caller wants to write? */ | |
959 | int overlapstart = max (regstart, myregstart); | |
960 | int overlapend = min (regend, myregend); | |
961 | ||
962 | /* We may be doing a partial update of an invalid register. | |
963 | Update it from the target before scribbling on it. */ | |
4caf0990 | 964 | deprecated_read_register_gen (regnum, regbuf); |
32178cab MS |
965 | |
966 | memcpy (registers + overlapstart, | |
967 | myaddr + (overlapstart - myregstart), | |
968 | overlapend - overlapstart); | |
969 | ||
5c27f28a | 970 | target_store_registers (regnum); |
32178cab MS |
971 | } |
972 | } | |
973 | } | |
974 | ||
06c0b04e AC |
975 | /* Perform a partial register transfer using a read, modify, write |
976 | operation. */ | |
977 | ||
978 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
979 | void *buf); | |
980 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
981 | const void *buf); | |
982 | ||
983 | void | |
984 | regcache_xfer_part (struct regcache *regcache, int regnum, | |
985 | int offset, int len, void *in, const void *out, | |
986 | regcache_read_ftype *read, regcache_write_ftype *write) | |
987 | { | |
988 | struct regcache_descr *descr = regcache->descr; | |
989 | bfd_byte *reg = alloca (descr->max_register_size); | |
990 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); | |
991 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
992 | /* Something to do? */ | |
993 | if (offset + len == 0) | |
994 | return; | |
995 | /* Read (when needed) ... */ | |
996 | if (in != NULL | |
997 | || offset > 0 | |
998 | || offset + len < descr->sizeof_register[regnum]) | |
999 | { | |
1000 | gdb_assert (read != NULL); | |
1001 | read (regcache, regnum, reg); | |
1002 | } | |
1003 | /* ... modify ... */ | |
1004 | if (in != NULL) | |
1005 | memcpy (in, reg + offset, len); | |
1006 | if (out != NULL) | |
1007 | memcpy (reg + offset, out, len); | |
1008 | /* ... write (when needed). */ | |
1009 | if (out != NULL) | |
1010 | { | |
1011 | gdb_assert (write != NULL); | |
1012 | write (regcache, regnum, reg); | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | void | |
1017 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
1018 | int offset, int len, void *buf) | |
1019 | { | |
1020 | struct regcache_descr *descr = regcache->descr; | |
1021 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1022 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1023 | regcache_raw_read, regcache_raw_write); | |
1024 | } | |
1025 | ||
1026 | void | |
1027 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
1028 | int offset, int len, const void *buf) | |
1029 | { | |
1030 | struct regcache_descr *descr = regcache->descr; | |
1031 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1032 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1033 | regcache_raw_read, regcache_raw_write); | |
1034 | } | |
1035 | ||
1036 | void | |
1037 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
1038 | int offset, int len, void *buf) | |
1039 | { | |
1040 | struct regcache_descr *descr = regcache->descr; | |
1041 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1042 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1043 | regcache_cooked_read, regcache_cooked_write); | |
1044 | } | |
1045 | ||
1046 | void | |
1047 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
1048 | int offset, int len, const void *buf) | |
1049 | { | |
1050 | struct regcache_descr *descr = regcache->descr; | |
1051 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1052 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1053 | regcache_cooked_read, regcache_cooked_write); | |
1054 | } | |
32178cab | 1055 | |
d3b22ed5 AC |
1056 | /* Hack to keep code that view the register buffer as raw bytes |
1057 | working. */ | |
1058 | ||
1059 | int | |
1060 | register_offset_hack (struct gdbarch *gdbarch, int regnum) | |
1061 | { | |
1062 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
1063 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1064 | return descr->register_offset[regnum]; | |
1065 | } | |
1066 | ||
1067 | static void | |
1068 | cooked_xfer_using_offset_hack (struct regcache *regcache, | |
1069 | int buf_start, int buf_len, void *in_b, | |
1070 | const void *out_b) | |
1071 | { | |
1072 | struct regcache_descr *descr = regcache->descr; | |
1073 | struct gdbarch *gdbarch = descr->gdbarch; | |
1074 | bfd_byte *in_buf = in_b; | |
1075 | const bfd_byte *out_buf = out_b; | |
1076 | int buf_end = buf_start + buf_len; | |
1077 | int regnum; | |
1078 | char *reg_buf = alloca (descr->max_register_size); | |
1079 | ||
1080 | /* NOTE: cagney/2002-08-17: This code assumes that the register | |
1081 | offsets are strictly increasing and do not overlap. If this | |
1082 | isn't the case then the bug is in the target architecture and NOT | |
1083 | this code. */ | |
1084 | ||
1085 | /* NOTE: cagney/2002-08-17: This code assumes that only the | |
1086 | registers covered by BUF_START:BUF_LEN should be transfered. If, | |
1087 | for some reason, there is a gap between two registers, then that | |
1088 | gap isn't transfered. (The gap shouldn't be there but that is | |
1089 | another story.) */ | |
1090 | ||
1091 | /* Iterate through all registers looking for those that lie within | |
1092 | BUF_START:BUF_LEN. */ | |
1093 | ||
1094 | for (regnum = 0; regnum < descr->nr_cooked_registers; regnum++) | |
1095 | { | |
1096 | /* The register's location. */ | |
1097 | int reg_start = descr->register_offset[regnum]; | |
1098 | int reg_len = descr->sizeof_register[regnum]; | |
1099 | int reg_end = reg_start + reg_len; | |
1100 | ||
1101 | /* The START, END and LEN that falls within the current | |
1102 | register. */ | |
1103 | int xfer_start; | |
1104 | int xfer_end; | |
1105 | int xfer_len; | |
1106 | ||
1107 | /* start = max (reg_start, buf_start) */ | |
1108 | if (reg_start > buf_start) | |
1109 | xfer_start = reg_start; | |
1110 | else | |
1111 | xfer_start = buf_start; | |
1112 | ||
1113 | /* end = min (reg_end, buf_end) */ | |
1114 | if (reg_end < buf_end) | |
1115 | xfer_end = reg_end; | |
1116 | else | |
1117 | xfer_end = buf_end; | |
1118 | ||
1119 | /* The number of bytes to transfer. If there isn't anything to | |
1120 | transfer (the end is before the start) this will be -ve. */ | |
1121 | xfer_len = xfer_end - xfer_start; | |
1122 | ||
1123 | if (xfer_len > 0) | |
1124 | regcache_xfer_part (regcache, regnum, xfer_start - reg_start, | |
1125 | xfer_len, in_b, out_b, regcache_cooked_read, | |
1126 | regcache_cooked_write); | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | void | |
1131 | regcache_cooked_read_using_offset_hack (struct regcache *regcache, | |
1132 | int buf_start, int buf_len, void *b) | |
1133 | { | |
1134 | cooked_xfer_using_offset_hack (regcache, buf_start, buf_len, b, NULL); | |
1135 | } | |
1136 | ||
1137 | void | |
1138 | regcache_cooked_write_using_offset_hack (struct regcache *regcache, | |
1139 | int buf_start, int buf_len, | |
1140 | const void *b) | |
1141 | { | |
1142 | cooked_xfer_using_offset_hack (regcache, buf_start, buf_len, NULL, b); | |
1143 | } | |
1144 | ||
5ebd2499 | 1145 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1146 | |
173155e8 | 1147 | ULONGEST |
5ebd2499 | 1148 | read_register (int regnum) |
32178cab | 1149 | { |
61a0eb5b | 1150 | char *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
4caf0990 | 1151 | deprecated_read_register_gen (regnum, buf); |
61a0eb5b | 1152 | return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum))); |
32178cab MS |
1153 | } |
1154 | ||
173155e8 | 1155 | ULONGEST |
39f77062 | 1156 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1157 | { |
39f77062 | 1158 | ptid_t save_ptid; |
32178cab MS |
1159 | int save_pid; |
1160 | CORE_ADDR retval; | |
1161 | ||
39f77062 | 1162 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1163 | return read_register (regnum); |
32178cab | 1164 | |
39f77062 | 1165 | save_ptid = inferior_ptid; |
32178cab | 1166 | |
39f77062 | 1167 | inferior_ptid = ptid; |
32178cab | 1168 | |
5ebd2499 | 1169 | retval = read_register (regnum); |
32178cab | 1170 | |
39f77062 | 1171 | inferior_ptid = save_ptid; |
32178cab MS |
1172 | |
1173 | return retval; | |
1174 | } | |
1175 | ||
5ebd2499 | 1176 | /* Return the contents of register REGNUM as a signed integer. */ |
173155e8 AC |
1177 | |
1178 | LONGEST | |
5ebd2499 | 1179 | read_signed_register (int regnum) |
173155e8 | 1180 | { |
61a0eb5b | 1181 | void *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
4caf0990 | 1182 | deprecated_read_register_gen (regnum, buf); |
61a0eb5b | 1183 | return (extract_signed_integer (buf, REGISTER_RAW_SIZE (regnum))); |
173155e8 AC |
1184 | } |
1185 | ||
1186 | LONGEST | |
39f77062 | 1187 | read_signed_register_pid (int regnum, ptid_t ptid) |
173155e8 | 1188 | { |
39f77062 | 1189 | ptid_t save_ptid; |
173155e8 AC |
1190 | LONGEST retval; |
1191 | ||
39f77062 | 1192 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1193 | return read_signed_register (regnum); |
173155e8 | 1194 | |
39f77062 | 1195 | save_ptid = inferior_ptid; |
173155e8 | 1196 | |
39f77062 | 1197 | inferior_ptid = ptid; |
173155e8 | 1198 | |
5ebd2499 | 1199 | retval = read_signed_register (regnum); |
173155e8 | 1200 | |
39f77062 | 1201 | inferior_ptid = save_ptid; |
173155e8 AC |
1202 | |
1203 | return retval; | |
1204 | } | |
1205 | ||
5ebd2499 | 1206 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
1207 | |
1208 | void | |
5ebd2499 | 1209 | write_register (int regnum, LONGEST val) |
32178cab | 1210 | { |
61a0eb5b | 1211 | void *buf; |
32178cab | 1212 | int size; |
5ebd2499 | 1213 | size = REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1214 | buf = alloca (size); |
1215 | store_signed_integer (buf, size, (LONGEST) val); | |
4caf0990 | 1216 | deprecated_write_register_gen (regnum, buf); |
32178cab MS |
1217 | } |
1218 | ||
1219 | void | |
39f77062 | 1220 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 1221 | { |
39f77062 | 1222 | ptid_t save_ptid; |
32178cab | 1223 | |
39f77062 | 1224 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 1225 | { |
5ebd2499 | 1226 | write_register (regnum, val); |
32178cab MS |
1227 | return; |
1228 | } | |
1229 | ||
39f77062 | 1230 | save_ptid = inferior_ptid; |
32178cab | 1231 | |
39f77062 | 1232 | inferior_ptid = ptid; |
32178cab | 1233 | |
5ebd2499 | 1234 | write_register (regnum, val); |
32178cab | 1235 | |
39f77062 | 1236 | inferior_ptid = save_ptid; |
32178cab MS |
1237 | } |
1238 | ||
1239 | /* SUPPLY_REGISTER() | |
1240 | ||
5ebd2499 | 1241 | Record that register REGNUM contains VAL. This is used when the |
32178cab MS |
1242 | value is obtained from the inferior or core dump, so there is no |
1243 | need to store the value there. | |
1244 | ||
1245 | If VAL is a NULL pointer, then it's probably an unsupported register. | |
5ebd2499 | 1246 | We just set its value to all zeros. We might want to record this |
32178cab MS |
1247 | fact, and report it to the users of read_register and friends. */ |
1248 | ||
1249 | void | |
1aaa5f99 | 1250 | supply_register (int regnum, const void *val) |
32178cab MS |
1251 | { |
1252 | #if 1 | |
39f77062 | 1253 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
1254 | { |
1255 | registers_changed (); | |
39f77062 | 1256 | registers_ptid = inferior_ptid; |
32178cab MS |
1257 | } |
1258 | #endif | |
1259 | ||
7302a204 | 1260 | set_register_cached (regnum, 1); |
32178cab | 1261 | if (val) |
3fadccb3 | 1262 | memcpy (register_buffer (current_regcache, regnum), val, |
5ebd2499 | 1263 | REGISTER_RAW_SIZE (regnum)); |
32178cab | 1264 | else |
3fadccb3 | 1265 | memset (register_buffer (current_regcache, regnum), '\000', |
5ebd2499 | 1266 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
1267 | |
1268 | /* On some architectures, e.g. HPPA, there are a few stray bits in | |
1269 | some registers, that the rest of the code would like to ignore. */ | |
1270 | ||
61a0eb5b AC |
1271 | /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is |
1272 | going to be deprecated. Instead architectures will leave the raw | |
1273 | register value as is and instead clean things up as they pass | |
d8124050 | 1274 | through the method gdbarch_pseudo_register_read() clean up the |
61a0eb5b AC |
1275 | values. */ |
1276 | ||
4ee3352d | 1277 | #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE |
0b434a00 AC |
1278 | DEPRECATED_CLEAN_UP_REGISTER_VALUE \ |
1279 | (regnum, register_buffer (current_regcache, regnum)); | |
32178cab MS |
1280 | #endif |
1281 | } | |
1282 | ||
193cb69f AC |
1283 | void |
1284 | regcache_collect (int regnum, void *buf) | |
1285 | { | |
3fadccb3 AC |
1286 | memcpy (buf, register_buffer (current_regcache, regnum), |
1287 | REGISTER_RAW_SIZE (regnum)); | |
193cb69f AC |
1288 | } |
1289 | ||
1290 | ||
8227c0ff AC |
1291 | /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special |
1292 | handling for registers PC, SP, and FP. */ | |
32178cab | 1293 | |
4e052eda AC |
1294 | /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(), |
1295 | read_pc_pid(), read_pc(), generic_target_write_pc(), | |
1296 | write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(), | |
8227c0ff AC |
1297 | generic_target_write_sp(), write_sp(), generic_target_read_fp() and |
1298 | read_fp(), will eventually be moved out of the reg-cache into | |
1299 | either frame.[hc] or to the multi-arch framework. The are not part | |
1300 | of the raw register cache. */ | |
4e052eda | 1301 | |
32178cab MS |
1302 | /* This routine is getting awfully cluttered with #if's. It's probably |
1303 | time to turn this into READ_PC and define it in the tm.h file. | |
1304 | Ditto for write_pc. | |
1305 | ||
1306 | 1999-06-08: The following were re-written so that it assumes the | |
8e1a459b | 1307 | existence of a TARGET_READ_PC et.al. macro. A default generic |
32178cab MS |
1308 | version of that macro is made available where needed. |
1309 | ||
1310 | Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled | |
1311 | by the multi-arch framework, it will eventually be possible to | |
1312 | eliminate the intermediate read_pc_pid(). The client would call | |
1313 | TARGET_READ_PC directly. (cagney). */ | |
1314 | ||
32178cab | 1315 | CORE_ADDR |
39f77062 | 1316 | generic_target_read_pc (ptid_t ptid) |
32178cab MS |
1317 | { |
1318 | #ifdef PC_REGNUM | |
1319 | if (PC_REGNUM >= 0) | |
1320 | { | |
39f77062 | 1321 | CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, ptid)); |
32178cab MS |
1322 | return pc_val; |
1323 | } | |
1324 | #endif | |
8e65ff28 AC |
1325 | internal_error (__FILE__, __LINE__, |
1326 | "generic_target_read_pc"); | |
32178cab MS |
1327 | return 0; |
1328 | } | |
1329 | ||
1330 | CORE_ADDR | |
39f77062 | 1331 | read_pc_pid (ptid_t ptid) |
32178cab | 1332 | { |
39f77062 | 1333 | ptid_t saved_inferior_ptid; |
32178cab MS |
1334 | CORE_ADDR pc_val; |
1335 | ||
39f77062 KB |
1336 | /* In case ptid != inferior_ptid. */ |
1337 | saved_inferior_ptid = inferior_ptid; | |
1338 | inferior_ptid = ptid; | |
32178cab | 1339 | |
39f77062 | 1340 | pc_val = TARGET_READ_PC (ptid); |
32178cab | 1341 | |
39f77062 | 1342 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1343 | return pc_val; |
1344 | } | |
1345 | ||
1346 | CORE_ADDR | |
1347 | read_pc (void) | |
1348 | { | |
39f77062 | 1349 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1350 | } |
1351 | ||
32178cab | 1352 | void |
39f77062 | 1353 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab MS |
1354 | { |
1355 | #ifdef PC_REGNUM | |
1356 | if (PC_REGNUM >= 0) | |
39f77062 | 1357 | write_register_pid (PC_REGNUM, pc, ptid); |
32178cab | 1358 | if (NPC_REGNUM >= 0) |
39f77062 | 1359 | write_register_pid (NPC_REGNUM, pc + 4, ptid); |
32178cab | 1360 | #else |
8e65ff28 AC |
1361 | internal_error (__FILE__, __LINE__, |
1362 | "generic_target_write_pc"); | |
32178cab MS |
1363 | #endif |
1364 | } | |
1365 | ||
1366 | void | |
39f77062 | 1367 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1368 | { |
39f77062 | 1369 | ptid_t saved_inferior_ptid; |
32178cab | 1370 | |
39f77062 KB |
1371 | /* In case ptid != inferior_ptid. */ |
1372 | saved_inferior_ptid = inferior_ptid; | |
1373 | inferior_ptid = ptid; | |
32178cab | 1374 | |
39f77062 | 1375 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1376 | |
39f77062 | 1377 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1378 | } |
1379 | ||
1380 | void | |
1381 | write_pc (CORE_ADDR pc) | |
1382 | { | |
39f77062 | 1383 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1384 | } |
1385 | ||
1386 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1387 | ||
32178cab MS |
1388 | CORE_ADDR |
1389 | generic_target_read_sp (void) | |
1390 | { | |
1391 | #ifdef SP_REGNUM | |
1392 | if (SP_REGNUM >= 0) | |
1393 | return read_register (SP_REGNUM); | |
1394 | #endif | |
8e65ff28 AC |
1395 | internal_error (__FILE__, __LINE__, |
1396 | "generic_target_read_sp"); | |
32178cab MS |
1397 | } |
1398 | ||
1399 | CORE_ADDR | |
1400 | read_sp (void) | |
1401 | { | |
1402 | return TARGET_READ_SP (); | |
1403 | } | |
1404 | ||
32178cab MS |
1405 | void |
1406 | generic_target_write_sp (CORE_ADDR val) | |
1407 | { | |
1408 | #ifdef SP_REGNUM | |
1409 | if (SP_REGNUM >= 0) | |
1410 | { | |
1411 | write_register (SP_REGNUM, val); | |
1412 | return; | |
1413 | } | |
1414 | #endif | |
8e65ff28 AC |
1415 | internal_error (__FILE__, __LINE__, |
1416 | "generic_target_write_sp"); | |
32178cab MS |
1417 | } |
1418 | ||
1419 | void | |
1420 | write_sp (CORE_ADDR val) | |
1421 | { | |
1422 | TARGET_WRITE_SP (val); | |
1423 | } | |
1424 | ||
32178cab MS |
1425 | CORE_ADDR |
1426 | generic_target_read_fp (void) | |
1427 | { | |
1428 | #ifdef FP_REGNUM | |
1429 | if (FP_REGNUM >= 0) | |
1430 | return read_register (FP_REGNUM); | |
1431 | #endif | |
8e65ff28 AC |
1432 | internal_error (__FILE__, __LINE__, |
1433 | "generic_target_read_fp"); | |
32178cab MS |
1434 | } |
1435 | ||
1436 | CORE_ADDR | |
1437 | read_fp (void) | |
1438 | { | |
1439 | return TARGET_READ_FP (); | |
1440 | } | |
1441 | ||
705152c5 MS |
1442 | /* ARGSUSED */ |
1443 | static void | |
1444 | reg_flush_command (char *command, int from_tty) | |
1445 | { | |
1446 | /* Force-flush the register cache. */ | |
1447 | registers_changed (); | |
1448 | if (from_tty) | |
1449 | printf_filtered ("Register cache flushed.\n"); | |
1450 | } | |
1451 | ||
32178cab MS |
1452 | static void |
1453 | build_regcache (void) | |
3fadccb3 AC |
1454 | { |
1455 | current_regcache = regcache_xmalloc (current_gdbarch); | |
1456 | current_regcache->passthrough_p = 1; | |
1457 | registers = deprecated_grub_regcache_for_registers (current_regcache); | |
8262ee23 | 1458 | deprecated_register_valid = deprecated_grub_regcache_for_register_valid (current_regcache); |
3fadccb3 AC |
1459 | } |
1460 | ||
af030b9a AC |
1461 | static void |
1462 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1463 | const unsigned char *buf, long len) | |
1464 | { | |
1465 | int i; | |
1466 | switch (endian) | |
1467 | { | |
1468 | case BFD_ENDIAN_BIG: | |
1469 | for (i = 0; i < len; i++) | |
1470 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1471 | break; | |
1472 | case BFD_ENDIAN_LITTLE: | |
1473 | for (i = len - 1; i >= 0; i--) | |
1474 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1475 | break; | |
1476 | default: | |
1477 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | enum regcache_dump_what | |
1482 | { | |
b59ff9d5 | 1483 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups |
af030b9a AC |
1484 | }; |
1485 | ||
1486 | static void | |
1487 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1488 | enum regcache_dump_what what_to_dump) | |
1489 | { | |
1490 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
b59ff9d5 AC |
1491 | struct gdbarch *gdbarch = regcache->descr->gdbarch; |
1492 | struct reggroup *const *groups = reggroups (gdbarch); | |
af030b9a AC |
1493 | int regnum; |
1494 | int footnote_nr = 0; | |
1495 | int footnote_register_size = 0; | |
1496 | int footnote_register_offset = 0; | |
1497 | int footnote_register_type_name_null = 0; | |
1498 | long register_offset = 0; | |
1499 | unsigned char *buf = alloca (regcache->descr->max_register_size); | |
1500 | ||
1501 | #if 0 | |
1502 | fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p); | |
1503 | fprintf_unfiltered (file, "nr_raw_registers %d\n", | |
1504 | regcache->descr->nr_raw_registers); | |
1505 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1506 | regcache->descr->nr_cooked_registers); | |
1507 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1508 | regcache->descr->sizeof_raw_registers); | |
1509 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1510 | regcache->descr->sizeof_raw_register_valid_p); | |
1511 | fprintf_unfiltered (file, "max_register_size %ld\n", | |
1512 | regcache->descr->max_register_size); | |
1513 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); | |
1514 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1515 | #endif | |
1516 | ||
1517 | gdb_assert (regcache->descr->nr_cooked_registers | |
1518 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1519 | ||
1520 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1521 | { | |
1522 | /* Name. */ | |
1523 | if (regnum < 0) | |
1524 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1525 | else | |
1526 | { | |
1527 | const char *p = REGISTER_NAME (regnum); | |
1528 | if (p == NULL) | |
1529 | p = ""; | |
1530 | else if (p[0] == '\0') | |
1531 | p = "''"; | |
1532 | fprintf_unfiltered (file, " %-10s", p); | |
1533 | } | |
1534 | ||
1535 | /* Number. */ | |
1536 | if (regnum < 0) | |
1537 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1538 | else | |
1539 | fprintf_unfiltered (file, " %4d", regnum); | |
1540 | ||
1541 | /* Relative number. */ | |
1542 | if (regnum < 0) | |
1543 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1544 | else if (regnum < NUM_REGS) | |
1545 | fprintf_unfiltered (file, " %4d", regnum); | |
1546 | else | |
1547 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1548 | ||
1549 | /* Offset. */ | |
1550 | if (regnum < 0) | |
1551 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1552 | else | |
1553 | { | |
1554 | fprintf_unfiltered (file, " %6ld", | |
1555 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 1556 | if (register_offset != regcache->descr->register_offset[regnum] |
d3b22ed5 AC |
1557 | || register_offset != REGISTER_BYTE (regnum) |
1558 | || (regnum > 0 | |
1559 | && (regcache->descr->register_offset[regnum] | |
1560 | != (regcache->descr->register_offset[regnum - 1] | |
1561 | + regcache->descr->sizeof_register[regnum - 1]))) | |
1562 | ) | |
af030b9a AC |
1563 | { |
1564 | if (!footnote_register_offset) | |
1565 | footnote_register_offset = ++footnote_nr; | |
1566 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1567 | } | |
1568 | else | |
1569 | fprintf_unfiltered (file, " "); | |
1570 | register_offset = (regcache->descr->register_offset[regnum] | |
1571 | + regcache->descr->sizeof_register[regnum]); | |
1572 | } | |
1573 | ||
1574 | /* Size. */ | |
1575 | if (regnum < 0) | |
1576 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1577 | else | |
1578 | { | |
1579 | fprintf_unfiltered (file, " %5ld", | |
1580 | regcache->descr->sizeof_register[regnum]); | |
1581 | if ((regcache->descr->sizeof_register[regnum] | |
1582 | != REGISTER_RAW_SIZE (regnum)) | |
1583 | || (regcache->descr->sizeof_register[regnum] | |
1584 | != REGISTER_VIRTUAL_SIZE (regnum)) | |
1585 | || (regcache->descr->sizeof_register[regnum] | |
bb425013 AC |
1586 | != TYPE_LENGTH (register_type (regcache->descr->gdbarch, |
1587 | regnum))) | |
af030b9a AC |
1588 | ) |
1589 | { | |
1590 | if (!footnote_register_size) | |
1591 | footnote_register_size = ++footnote_nr; | |
1592 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1593 | } | |
1594 | else | |
1595 | fprintf_unfiltered (file, " "); | |
1596 | } | |
1597 | ||
1598 | /* Type. */ | |
b59ff9d5 AC |
1599 | { |
1600 | const char *t; | |
1601 | if (regnum < 0) | |
1602 | t = "Type"; | |
1603 | else | |
1604 | { | |
1605 | static const char blt[] = "builtin_type"; | |
1606 | t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum)); | |
1607 | if (t == NULL) | |
1608 | { | |
1609 | char *n; | |
1610 | if (!footnote_register_type_name_null) | |
1611 | footnote_register_type_name_null = ++footnote_nr; | |
1612 | xasprintf (&n, "*%d", footnote_register_type_name_null); | |
1613 | make_cleanup (xfree, n); | |
1614 | t = n; | |
1615 | } | |
1616 | /* Chop a leading builtin_type. */ | |
1617 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1618 | t += strlen (blt); | |
1619 | } | |
1620 | fprintf_unfiltered (file, " %-15s", t); | |
1621 | } | |
1622 | ||
1623 | /* Leading space always present. */ | |
1624 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1625 | |
1626 | /* Value, raw. */ | |
1627 | if (what_to_dump == regcache_dump_raw) | |
1628 | { | |
1629 | if (regnum < 0) | |
1630 | fprintf_unfiltered (file, "Raw value"); | |
1631 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1632 | fprintf_unfiltered (file, "<cooked>"); | |
1633 | else if (!regcache_valid_p (regcache, regnum)) | |
1634 | fprintf_unfiltered (file, "<invalid>"); | |
1635 | else | |
1636 | { | |
1637 | regcache_raw_read (regcache, regnum, buf); | |
1638 | fprintf_unfiltered (file, "0x"); | |
1639 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1640 | REGISTER_RAW_SIZE (regnum)); | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | /* Value, cooked. */ | |
1645 | if (what_to_dump == regcache_dump_cooked) | |
1646 | { | |
1647 | if (regnum < 0) | |
1648 | fprintf_unfiltered (file, "Cooked value"); | |
1649 | else | |
1650 | { | |
1651 | regcache_cooked_read (regcache, regnum, buf); | |
1652 | fprintf_unfiltered (file, "0x"); | |
1653 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1654 | REGISTER_VIRTUAL_SIZE (regnum)); | |
1655 | } | |
1656 | } | |
1657 | ||
b59ff9d5 AC |
1658 | /* Group members. */ |
1659 | if (what_to_dump == regcache_dump_groups) | |
1660 | { | |
1661 | if (regnum < 0) | |
1662 | fprintf_unfiltered (file, "Groups"); | |
1663 | else | |
1664 | { | |
1665 | int i; | |
1666 | const char *sep = ""; | |
1667 | for (i = 0; groups[i] != NULL; i++) | |
1668 | { | |
1669 | if (gdbarch_register_reggroup_p (gdbarch, regnum, groups[i])) | |
1670 | { | |
1671 | fprintf_unfiltered (file, "%s%s", sep, reggroup_name (groups[i])); | |
1672 | sep = ","; | |
1673 | } | |
1674 | } | |
1675 | } | |
1676 | } | |
1677 | ||
af030b9a AC |
1678 | fprintf_unfiltered (file, "\n"); |
1679 | } | |
1680 | ||
1681 | if (footnote_register_size) | |
1682 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1683 | footnote_register_size); | |
1684 | if (footnote_register_offset) | |
1685 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1686 | footnote_register_offset); | |
1687 | if (footnote_register_type_name_null) | |
1688 | fprintf_unfiltered (file, | |
1689 | "*%d: Register type's name NULL.\n", | |
1690 | footnote_register_type_name_null); | |
1691 | do_cleanups (cleanups); | |
1692 | } | |
1693 | ||
1694 | static void | |
1695 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1696 | { | |
1697 | if (args == NULL) | |
1698 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1699 | else | |
1700 | { | |
1701 | struct ui_file *file = gdb_fopen (args, "w"); | |
1702 | if (file == NULL) | |
1703 | perror_with_name ("maintenance print architecture"); | |
1704 | regcache_dump (current_regcache, file, what_to_dump); | |
1705 | ui_file_delete (file); | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | static void | |
1710 | maintenance_print_registers (char *args, int from_tty) | |
1711 | { | |
1712 | regcache_print (args, regcache_dump_none); | |
1713 | } | |
1714 | ||
1715 | static void | |
1716 | maintenance_print_raw_registers (char *args, int from_tty) | |
1717 | { | |
1718 | regcache_print (args, regcache_dump_raw); | |
1719 | } | |
1720 | ||
1721 | static void | |
1722 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1723 | { | |
1724 | regcache_print (args, regcache_dump_cooked); | |
1725 | } | |
1726 | ||
b59ff9d5 AC |
1727 | static void |
1728 | maintenance_print_register_groups (char *args, int from_tty) | |
1729 | { | |
1730 | regcache_print (args, regcache_dump_groups); | |
1731 | } | |
1732 | ||
32178cab MS |
1733 | void |
1734 | _initialize_regcache (void) | |
1735 | { | |
3fadccb3 AC |
1736 | regcache_descr_handle = register_gdbarch_data (init_regcache_descr, |
1737 | xfree_regcache_descr); | |
1738 | REGISTER_GDBARCH_SWAP (current_regcache); | |
32178cab | 1739 | register_gdbarch_swap (®isters, sizeof (registers), NULL); |
8262ee23 | 1740 | register_gdbarch_swap (&deprecated_register_valid, sizeof (deprecated_register_valid), NULL); |
32178cab | 1741 | register_gdbarch_swap (NULL, 0, build_regcache); |
705152c5 MS |
1742 | |
1743 | add_com ("flushregs", class_maintenance, reg_flush_command, | |
1744 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1745 | |
1746 | /* Initialize the thread/process associated with the current set of | |
1747 | registers. For now, -1 is special, and means `no current process'. */ | |
1748 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1749 | |
1750 | add_cmd ("registers", class_maintenance, | |
1751 | maintenance_print_registers, | |
1752 | "Print the internal register configuration.\ | |
1753 | Takes an optional file parameter.", | |
1754 | &maintenanceprintlist); | |
1755 | add_cmd ("raw-registers", class_maintenance, | |
1756 | maintenance_print_raw_registers, | |
1757 | "Print the internal register configuration including raw values.\ | |
1758 | Takes an optional file parameter.", | |
1759 | &maintenanceprintlist); | |
1760 | add_cmd ("cooked-registers", class_maintenance, | |
1761 | maintenance_print_cooked_registers, | |
1762 | "Print the internal register configuration including cooked values.\ | |
b59ff9d5 AC |
1763 | Takes an optional file parameter.", |
1764 | &maintenanceprintlist); | |
1765 | add_cmd ("register-groups", class_maintenance, | |
1766 | maintenance_print_register_groups, | |
1767 | "Print the internal register configuration including each register's group.\ | |
af030b9a AC |
1768 | Takes an optional file parameter.", |
1769 | &maintenanceprintlist); | |
1770 | ||
32178cab | 1771 | } |