Commit | Line | Data |
---|---|---|
32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 AC |
2 | |
3 | Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, | |
4 | 2001, 2002 Free Software Foundation, Inc. | |
32178cab MS |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
32178cab MS |
24 | #include "inferior.h" |
25 | #include "target.h" | |
26 | #include "gdbarch.h" | |
705152c5 | 27 | #include "gdbcmd.h" |
4e052eda | 28 | #include "regcache.h" |
61a0eb5b | 29 | #include "gdb_assert.h" |
b66d6d2e | 30 | #include "gdb_string.h" |
af030b9a | 31 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
32178cab MS |
32 | |
33 | /* | |
34 | * DATA STRUCTURE | |
35 | * | |
36 | * Here is the actual register cache. | |
37 | */ | |
38 | ||
3fadccb3 AC |
39 | /* Per-architecture object describing the layout of a register cache. |
40 | Computed once when the architecture is created */ | |
41 | ||
42 | struct gdbarch_data *regcache_descr_handle; | |
43 | ||
44 | struct regcache_descr | |
45 | { | |
46 | /* The architecture this descriptor belongs to. */ | |
47 | struct gdbarch *gdbarch; | |
48 | ||
49 | /* Is this a ``legacy'' register cache? Such caches reserve space | |
50 | for raw and pseudo registers and allow access to both. */ | |
51 | int legacy_p; | |
52 | ||
53 | /* The raw register cache. This should contain just [0 | |
54 | .. NUM_RAW_REGISTERS). However, for older targets, it contains | |
55 | space for the full [0 .. NUM_RAW_REGISTERS + | |
56 | NUM_PSEUDO_REGISTERS). */ | |
57 | int nr_raw_registers; | |
58 | long sizeof_raw_registers; | |
59 | long sizeof_raw_register_valid_p; | |
60 | ||
d138e37a AC |
61 | /* The cooked register space. Each cooked register in the range |
62 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
63 | register. The remaining [NR_RAW_REGISTERS | |
64 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo regiters) are mapped onto | |
65 | both raw registers and memory by the architecture methods | |
66 | gdbarch_register_read and gdbarch_register_write. */ | |
67 | int nr_cooked_registers; | |
68 | ||
69 | /* Offset and size (in 8 bit bytes), of reach register in the | |
70 | register cache. All registers (including those in the range | |
71 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
72 | Assigning all registers an offset makes it possible to keep | |
73 | legacy code, such as that found in read_register_bytes() and | |
74 | write_register_bytes() working. */ | |
3fadccb3 | 75 | long *register_offset; |
3fadccb3 | 76 | long *sizeof_register; |
3fadccb3 | 77 | |
d138e37a AC |
78 | /* Useful constant. Largest of all the registers. */ |
79 | long max_register_size; | |
bb425013 AC |
80 | |
81 | /* Cached table containing the type of each register. */ | |
82 | struct type **register_type; | |
3fadccb3 AC |
83 | }; |
84 | ||
bb425013 AC |
85 | void |
86 | init_legacy_regcache_descr (struct gdbarch *gdbarch, | |
87 | struct regcache_descr *descr) | |
3fadccb3 AC |
88 | { |
89 | int i; | |
3fadccb3 AC |
90 | /* FIXME: cagney/2002-05-11: gdbarch_data() should take that |
91 | ``gdbarch'' as a parameter. */ | |
92 | gdb_assert (gdbarch != NULL); | |
93 | ||
3fadccb3 AC |
94 | /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers |
95 | in the register buffer. Unfortunatly some architectures do. */ | |
d138e37a AC |
96 | descr->nr_raw_registers = descr->nr_cooked_registers; |
97 | descr->sizeof_raw_register_valid_p = descr->nr_cooked_registers; | |
3fadccb3 AC |
98 | |
99 | /* FIXME: cagney/2002-05-11: Instead of using REGISTER_BYTE() this | |
100 | code should compute the offets et.al. at runtime. This currently | |
101 | isn't possible because some targets overlap register locations - | |
102 | see the mess in read_register_bytes() and write_register_bytes() | |
103 | registers. */ | |
d138e37a AC |
104 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
105 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 106 | descr->max_register_size = 0; |
d138e37a | 107 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
108 | { |
109 | descr->register_offset[i] = REGISTER_BYTE (i); | |
110 | descr->sizeof_register[i] = REGISTER_RAW_SIZE (i); | |
111 | if (descr->max_register_size < REGISTER_RAW_SIZE (i)) | |
112 | descr->max_register_size = REGISTER_RAW_SIZE (i); | |
0ed04cce AC |
113 | if (descr->max_register_size < REGISTER_VIRTUAL_SIZE (i)) |
114 | descr->max_register_size = REGISTER_VIRTUAL_SIZE (i); | |
3fadccb3 AC |
115 | } |
116 | ||
117 | /* Come up with the real size of the registers buffer. */ | |
118 | descr->sizeof_raw_registers = REGISTER_BYTES; /* OK use. */ | |
d138e37a | 119 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
120 | { |
121 | long regend; | |
122 | /* Keep extending the buffer so that there is always enough | |
123 | space for all registers. The comparison is necessary since | |
124 | legacy code is free to put registers in random places in the | |
125 | buffer separated by holes. Once REGISTER_BYTE() is killed | |
126 | this can be greatly simplified. */ | |
127 | /* FIXME: cagney/2001-12-04: This code shouldn't need to use | |
128 | REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the | |
129 | buffer out so that certain registers just happen to overlap. | |
130 | Ulgh! New targets use gdbarch's register read/write and | |
131 | entirely avoid this uglyness. */ | |
132 | regend = descr->register_offset[i] + descr->sizeof_register[i]; | |
133 | if (descr->sizeof_raw_registers < regend) | |
134 | descr->sizeof_raw_registers = regend; | |
135 | } | |
3fadccb3 AC |
136 | } |
137 | ||
138 | static void * | |
139 | init_regcache_descr (struct gdbarch *gdbarch) | |
140 | { | |
141 | int i; | |
142 | struct regcache_descr *descr; | |
143 | gdb_assert (gdbarch != NULL); | |
144 | ||
bb425013 AC |
145 | /* Create an initial, zero filled, table. */ |
146 | descr = XCALLOC (1, struct regcache_descr); | |
3fadccb3 | 147 | descr->gdbarch = gdbarch; |
3fadccb3 | 148 | |
d138e37a AC |
149 | /* Total size of the register space. The raw registers are mapped |
150 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 151 | either mapped onto raw-registers or memory. */ |
d138e37a | 152 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 | 153 | |
bb425013 AC |
154 | /* Fill in a table of register types. */ |
155 | descr->register_type = XCALLOC (descr->nr_cooked_registers, | |
156 | struct type *); | |
157 | for (i = 0; i < descr->nr_cooked_registers; i++) | |
158 | { | |
159 | descr->register_type[i] = REGISTER_VIRTUAL_TYPE (i); | |
160 | } | |
161 | ||
162 | /* If an old style architecture, fill in the remainder of the | |
163 | register cache descriptor using the register macros. */ | |
164 | if (!gdbarch_pseudo_register_read_p (gdbarch) | |
165 | && !gdbarch_pseudo_register_write_p (gdbarch)) | |
166 | { | |
167 | descr->legacy_p = 1; | |
168 | init_legacy_regcache_descr (gdbarch, descr); | |
169 | return descr; | |
170 | } | |
171 | ||
3fadccb3 AC |
172 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
173 | into the register cache. */ | |
174 | descr->nr_raw_registers = NUM_REGS; | |
53826de9 AC |
175 | |
176 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
177 | array. This pretects GDB from erant code that accesses elements | |
178 | of the global register_valid_p[] array in the range [NUM_REGS | |
179 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
180 | descr->sizeof_raw_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; | |
3fadccb3 AC |
181 | |
182 | /* Lay out the register cache. The pseud-registers are included in | |
183 | the layout even though their value isn't stored in the register | |
184 | cache. Some code, via read_register_bytes() access a register | |
185 | using an offset/length rather than a register number. | |
186 | ||
bb425013 AC |
187 | NOTE: cagney/2002-05-22: Only register_type() is used when |
188 | constructing the register cache. It is assumed that the | |
189 | register's raw size, virtual size and type length are all the | |
190 | same. */ | |
3fadccb3 AC |
191 | |
192 | { | |
193 | long offset = 0; | |
d138e37a AC |
194 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
195 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 196 | descr->max_register_size = 0; |
d138e37a | 197 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 198 | { |
bb425013 | 199 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
200 | descr->register_offset[i] = offset; |
201 | offset += descr->sizeof_register[i]; | |
202 | if (descr->max_register_size < descr->sizeof_register[i]) | |
203 | descr->max_register_size = descr->sizeof_register[i]; | |
204 | } | |
205 | /* Set the real size of the register cache buffer. */ | |
206 | /* FIXME: cagney/2002-05-22: Should only need to allocate space | |
207 | for the raw registers. Unfortunatly some code still accesses | |
208 | the register array directly using the global registers[]. | |
209 | Until that code has been purged, play safe and over allocating | |
210 | the register buffer. Ulgh! */ | |
211 | descr->sizeof_raw_registers = offset; | |
212 | /* = descr->register_offset[descr->nr_raw_registers]; */ | |
213 | } | |
214 | ||
215 | #if 0 | |
216 | /* Sanity check. Confirm that the assumptions about gdbarch are | |
217 | true. The REGCACHE_DESCR_HANDLE is set before doing the checks | |
218 | so that targets using the generic methods supplied by regcache | |
219 | don't go into infinite recursion trying to, again, create the | |
220 | regcache. */ | |
221 | set_gdbarch_data (gdbarch, regcache_descr_handle, descr); | |
d138e37a | 222 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
223 | { |
224 | gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i)); | |
225 | gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i)); | |
226 | gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i)); | |
227 | } | |
228 | /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */ | |
229 | #endif | |
230 | ||
231 | return descr; | |
232 | } | |
233 | ||
234 | static struct regcache_descr * | |
235 | regcache_descr (struct gdbarch *gdbarch) | |
236 | { | |
237 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
238 | } | |
239 | ||
240 | static void | |
241 | xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr) | |
242 | { | |
243 | struct regcache_descr *descr = ptr; | |
244 | if (descr == NULL) | |
245 | return; | |
246 | xfree (descr->register_offset); | |
247 | xfree (descr->sizeof_register); | |
248 | descr->register_offset = NULL; | |
249 | descr->sizeof_register = NULL; | |
250 | xfree (descr); | |
251 | } | |
252 | ||
bb425013 AC |
253 | /* Utility functions returning useful register attributes stored in |
254 | the regcache descr. */ | |
255 | ||
256 | struct type * | |
257 | register_type (struct gdbarch *gdbarch, int regnum) | |
258 | { | |
259 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
260 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
261 | return descr->register_type[regnum]; | |
262 | } | |
263 | ||
0ed04cce AC |
264 | /* Utility functions returning useful register attributes stored in |
265 | the regcache descr. */ | |
266 | ||
267 | int | |
268 | max_register_size (struct gdbarch *gdbarch) | |
269 | { | |
270 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
271 | return descr->max_register_size; | |
272 | } | |
273 | ||
3fadccb3 AC |
274 | /* The register cache for storing raw register values. */ |
275 | ||
276 | struct regcache | |
277 | { | |
278 | struct regcache_descr *descr; | |
279 | char *raw_registers; | |
280 | char *raw_register_valid_p; | |
281 | /* If a value isn't in the cache should the corresponding target be | |
282 | queried for a value. */ | |
283 | int passthrough_p; | |
284 | }; | |
285 | ||
286 | struct regcache * | |
287 | regcache_xmalloc (struct gdbarch *gdbarch) | |
288 | { | |
289 | struct regcache_descr *descr; | |
290 | struct regcache *regcache; | |
291 | gdb_assert (gdbarch != NULL); | |
292 | descr = regcache_descr (gdbarch); | |
293 | regcache = XMALLOC (struct regcache); | |
294 | regcache->descr = descr; | |
295 | regcache->raw_registers | |
296 | = XCALLOC (descr->sizeof_raw_registers, char); | |
297 | regcache->raw_register_valid_p | |
298 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); | |
299 | regcache->passthrough_p = 0; | |
300 | return regcache; | |
301 | } | |
302 | ||
303 | void | |
304 | regcache_xfree (struct regcache *regcache) | |
305 | { | |
306 | if (regcache == NULL) | |
307 | return; | |
308 | xfree (regcache->raw_registers); | |
309 | xfree (regcache->raw_register_valid_p); | |
310 | xfree (regcache); | |
311 | } | |
312 | ||
36160dc4 AC |
313 | void |
314 | do_regcache_xfree (void *data) | |
315 | { | |
316 | regcache_xfree (data); | |
317 | } | |
318 | ||
319 | struct cleanup * | |
320 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
321 | { | |
322 | return make_cleanup (do_regcache_xfree, regcache); | |
323 | } | |
324 | ||
3fadccb3 AC |
325 | void |
326 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
327 | { | |
328 | int i; | |
329 | char *buf; | |
330 | gdb_assert (src != NULL && dst != NULL); | |
331 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
332 | gdb_assert (src != dst); | |
333 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
334 | It keeps the existing code working where things rely on going | |
335 | through to the register cache. */ | |
336 | if (src == current_regcache && src->descr->legacy_p) | |
337 | { | |
338 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
339 | untangle fetch. */ | |
340 | read_register_bytes (0, dst->raw_registers, REGISTER_BYTES); | |
341 | return; | |
342 | } | |
343 | /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite. | |
344 | It keeps the existing code working where things rely on going | |
345 | through to the register cache. */ | |
346 | if (dst == current_regcache && dst->descr->legacy_p) | |
347 | { | |
348 | /* ULGH!!!! Old way. Use REGISTER bytes and let code below | |
349 | untangle fetch. */ | |
350 | write_register_bytes (0, src->raw_registers, REGISTER_BYTES); | |
351 | return; | |
352 | } | |
353 | buf = alloca (src->descr->max_register_size); | |
354 | for (i = 0; i < src->descr->nr_raw_registers; i++) | |
355 | { | |
356 | /* Should we worry about the valid bit here? */ | |
0818c12a AC |
357 | regcache_raw_read (src, i, buf); |
358 | regcache_raw_write (dst, i, buf); | |
3fadccb3 AC |
359 | } |
360 | } | |
361 | ||
362 | void | |
363 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
364 | { | |
365 | int i; | |
366 | gdb_assert (src != NULL && dst != NULL); | |
367 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
368 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
369 | move of data into the current_regcache(). Doing this would be | |
370 | silly - it would mean that valid_p would be completly invalid. */ | |
371 | gdb_assert (dst != current_regcache); | |
372 | memcpy (dst->raw_registers, src->raw_registers, | |
373 | dst->descr->sizeof_raw_registers); | |
374 | memcpy (dst->raw_register_valid_p, src->raw_register_valid_p, | |
375 | dst->descr->sizeof_raw_register_valid_p); | |
376 | } | |
377 | ||
378 | struct regcache * | |
379 | regcache_dup (struct regcache *src) | |
380 | { | |
381 | struct regcache *newbuf; | |
382 | gdb_assert (current_regcache != NULL); | |
383 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
384 | regcache_cpy (newbuf, src); | |
385 | return newbuf; | |
386 | } | |
387 | ||
388 | struct regcache * | |
389 | regcache_dup_no_passthrough (struct regcache *src) | |
390 | { | |
391 | struct regcache *newbuf; | |
392 | gdb_assert (current_regcache != NULL); | |
393 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
394 | regcache_cpy_no_passthrough (newbuf, src); | |
395 | return newbuf; | |
396 | } | |
397 | ||
398 | int | |
399 | regcache_valid_p (struct regcache *regcache, int regnum) | |
400 | { | |
401 | gdb_assert (regcache != NULL); | |
402 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
403 | return regcache->raw_register_valid_p[regnum]; | |
404 | } | |
405 | ||
3fadccb3 AC |
406 | char * |
407 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
408 | { | |
409 | return regcache->raw_registers; | |
410 | } | |
411 | ||
412 | char * | |
413 | deprecated_grub_regcache_for_register_valid (struct regcache *regcache) | |
414 | { | |
415 | return regcache->raw_register_valid_p; | |
416 | } | |
417 | ||
418 | /* Global structure containing the current regcache. */ | |
419 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
420 | register_valid[] currently point into this structure. */ | |
421 | struct regcache *current_regcache; | |
422 | ||
5ebd2499 | 423 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
424 | recording if the register values have been changed (eg. by the |
425 | user). Therefore all registers must be written back to the | |
426 | target when appropriate. */ | |
427 | ||
428 | /* REGISTERS contains the cached register values (in target byte order). */ | |
429 | ||
430 | char *registers; | |
431 | ||
432 | /* REGISTER_VALID is 0 if the register needs to be fetched, | |
433 | 1 if it has been fetched, and | |
434 | -1 if the register value was not available. | |
c97dcfc7 AC |
435 | |
436 | "Not available" indicates that the target is not not able to supply | |
437 | the register at this state. The register may become available at a | |
438 | later time (after the next resume). This often occures when GDB is | |
439 | manipulating a target that contains only a snapshot of the entire | |
440 | system being debugged - some of the registers in such a system may | |
441 | not have been saved. */ | |
32178cab MS |
442 | |
443 | signed char *register_valid; | |
444 | ||
39f77062 | 445 | /* The thread/process associated with the current set of registers. */ |
32178cab | 446 | |
39f77062 | 447 | static ptid_t registers_ptid; |
32178cab MS |
448 | |
449 | /* | |
450 | * FUNCTIONS: | |
451 | */ | |
452 | ||
453 | /* REGISTER_CACHED() | |
454 | ||
455 | Returns 0 if the value is not in the cache (needs fetch). | |
456 | >0 if the value is in the cache. | |
457 | <0 if the value is permanently unavailable (don't ask again). */ | |
458 | ||
459 | int | |
460 | register_cached (int regnum) | |
461 | { | |
462 | return register_valid[regnum]; | |
463 | } | |
464 | ||
7302a204 ND |
465 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
466 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
467 | ||
468 | void | |
469 | set_register_cached (int regnum, int state) | |
470 | { | |
53826de9 AC |
471 | gdb_assert (regnum >= 0); |
472 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
473 | current_regcache->raw_register_valid_p[regnum] = state; | |
7302a204 ND |
474 | } |
475 | ||
2dc4e391 DT |
476 | /* REGISTER_CHANGED |
477 | ||
478 | invalidate a single register REGNUM in the cache */ | |
479 | void | |
480 | register_changed (int regnum) | |
481 | { | |
7302a204 ND |
482 | set_register_cached (regnum, 0); |
483 | } | |
484 | ||
485 | /* If REGNUM >= 0, return a pointer to register REGNUM's cache buffer area, | |
486 | else return a pointer to the start of the cache buffer. */ | |
487 | ||
193cb69f | 488 | static char * |
3fadccb3 | 489 | register_buffer (struct regcache *regcache, int regnum) |
7302a204 | 490 | { |
3fadccb3 | 491 | return regcache->raw_registers + regcache->descr->register_offset[regnum]; |
7302a204 ND |
492 | } |
493 | ||
494 | /* Return whether register REGNUM is a real register. */ | |
495 | ||
496 | static int | |
497 | real_register (int regnum) | |
498 | { | |
499 | return regnum >= 0 && regnum < NUM_REGS; | |
500 | } | |
501 | ||
32178cab MS |
502 | /* Low level examining and depositing of registers. |
503 | ||
504 | The caller is responsible for making sure that the inferior is | |
505 | stopped before calling the fetching routines, or it will get | |
506 | garbage. (a change from GDB version 3, in which the caller got the | |
507 | value from the last stop). */ | |
508 | ||
509 | /* REGISTERS_CHANGED () | |
510 | ||
511 | Indicate that registers may have changed, so invalidate the cache. */ | |
512 | ||
513 | void | |
514 | registers_changed (void) | |
515 | { | |
516 | int i; | |
32178cab | 517 | |
39f77062 | 518 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
519 | |
520 | /* Force cleanup of any alloca areas if using C alloca instead of | |
521 | a builtin alloca. This particular call is used to clean up | |
522 | areas allocated by low level target code which may build up | |
523 | during lengthy interactions between gdb and the target before | |
524 | gdb gives control to the user (ie watchpoints). */ | |
525 | alloca (0); | |
526 | ||
53826de9 | 527 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 528 | set_register_cached (i, 0); |
32178cab MS |
529 | |
530 | if (registers_changed_hook) | |
531 | registers_changed_hook (); | |
532 | } | |
533 | ||
534 | /* REGISTERS_FETCHED () | |
535 | ||
536 | Indicate that all registers have been fetched, so mark them all valid. */ | |
537 | ||
31e9866e AC |
538 | /* NOTE: cagney/2001-12-04: This function does not set valid on the |
539 | pseudo-register range since pseudo registers are always supplied | |
540 | using supply_register(). */ | |
541 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target | |
542 | code was blatting the registers[] array and then calling this. | |
543 | Since targets should only be using supply_register() the need for | |
544 | this function/hack is eliminated. */ | |
32178cab MS |
545 | |
546 | void | |
547 | registers_fetched (void) | |
548 | { | |
549 | int i; | |
32178cab | 550 | |
a728f042 | 551 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 552 | set_register_cached (i, 1); |
fcdc5976 | 553 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 554 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
555 | } |
556 | ||
557 | /* read_register_bytes and write_register_bytes are generally a *BAD* | |
558 | idea. They are inefficient because they need to check for partial | |
559 | updates, which can only be done by scanning through all of the | |
560 | registers and seeing if the bytes that are being read/written fall | |
561 | inside of an invalid register. [The main reason this is necessary | |
562 | is that register sizes can vary, so a simple index won't suffice.] | |
563 | It is far better to call read_register_gen and write_register_gen | |
564 | if you want to get at the raw register contents, as it only takes a | |
5ebd2499 | 565 | regnum as an argument, and therefore can't do a partial register |
32178cab MS |
566 | update. |
567 | ||
568 | Prior to the recent fixes to check for partial updates, both read | |
569 | and write_register_bytes always checked to see if any registers | |
570 | were stale, and then called target_fetch_registers (-1) to update | |
571 | the whole set. This caused really slowed things down for remote | |
572 | targets. */ | |
573 | ||
574 | /* Copy INLEN bytes of consecutive data from registers | |
575 | starting with the INREGBYTE'th byte of register data | |
576 | into memory at MYADDR. */ | |
577 | ||
578 | void | |
61a0eb5b | 579 | read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 580 | { |
61a0eb5b | 581 | int in_end = in_start + in_len; |
5ebd2499 | 582 | int regnum; |
61a0eb5b | 583 | char *reg_buf = alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
584 | |
585 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
586 | update just those registers. */ | |
587 | ||
5ebd2499 | 588 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 589 | { |
61a0eb5b AC |
590 | int reg_start; |
591 | int reg_end; | |
592 | int reg_len; | |
593 | int start; | |
594 | int end; | |
595 | int byte; | |
32178cab | 596 | |
61a0eb5b AC |
597 | reg_start = REGISTER_BYTE (regnum); |
598 | reg_len = REGISTER_RAW_SIZE (regnum); | |
599 | reg_end = reg_start + reg_len; | |
32178cab | 600 | |
61a0eb5b | 601 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 602 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
603 | continue; |
604 | ||
275f450c AC |
605 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
606 | /* Force the cache to fetch the entire register. */ | |
607 | read_register_gen (regnum, reg_buf); | |
608 | else | |
609 | /* Legacy note: even though this register is ``invalid'' we | |
610 | still need to return something. It would appear that some | |
611 | code relies on apparent gaps in the register array also | |
612 | being returned. */ | |
613 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
614 | the entire register read/write flow of control. Must | |
615 | resist temptation to return 0xdeadbeef. */ | |
616 | memcpy (reg_buf, registers + reg_start, reg_len); | |
32178cab | 617 | |
61a0eb5b AC |
618 | /* Legacy note: This function, for some reason, allows a NULL |
619 | input buffer. If the buffer is NULL, the registers are still | |
620 | fetched, just the final transfer is skipped. */ | |
621 | if (in_buf == NULL) | |
622 | continue; | |
623 | ||
624 | /* start = max (reg_start, in_start) */ | |
625 | if (reg_start > in_start) | |
626 | start = reg_start; | |
627 | else | |
628 | start = in_start; | |
629 | ||
630 | /* end = min (reg_end, in_end) */ | |
631 | if (reg_end < in_end) | |
632 | end = reg_end; | |
633 | else | |
634 | end = in_end; | |
635 | ||
636 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
637 | for (byte = start; byte < end; byte++) | |
165cd47f | 638 | { |
61a0eb5b | 639 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 640 | } |
32178cab | 641 | } |
32178cab MS |
642 | } |
643 | ||
5ebd2499 ND |
644 | /* Read register REGNUM into memory at MYADDR, which must be large |
645 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
646 | register is known to be the size of a CORE_ADDR or smaller, |
647 | read_register can be used instead. */ | |
648 | ||
61a0eb5b AC |
649 | static void |
650 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 651 | { |
61a0eb5b | 652 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 653 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
654 | { |
655 | registers_changed (); | |
39f77062 | 656 | registers_ptid = inferior_ptid; |
32178cab MS |
657 | } |
658 | ||
7302a204 | 659 | if (!register_cached (regnum)) |
5c27f28a | 660 | target_fetch_registers (regnum); |
7302a204 | 661 | |
3fadccb3 | 662 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
5ebd2499 | 663 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
664 | } |
665 | ||
61a0eb5b | 666 | void |
1aaa5f99 | 667 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 668 | { |
3fadccb3 AC |
669 | gdb_assert (regcache != NULL && buf != NULL); |
670 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
671 | if (regcache->descr->legacy_p | |
672 | && regcache->passthrough_p) | |
673 | { | |
674 | gdb_assert (regcache == current_regcache); | |
675 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
676 | silently and very indirectly updates the regcache's regcache | |
677 | via the global register_valid[]. */ | |
678 | legacy_read_register_gen (regnum, buf); | |
679 | return; | |
680 | } | |
681 | /* Make certain that the register cache is up-to-date with respect | |
682 | to the current thread. This switching shouldn't be necessary | |
683 | only there is still only one target side register cache. Sigh! | |
684 | On the bright side, at least there is a regcache object. */ | |
685 | if (regcache->passthrough_p) | |
686 | { | |
687 | gdb_assert (regcache == current_regcache); | |
688 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
689 | { | |
690 | registers_changed (); | |
691 | registers_ptid = inferior_ptid; | |
692 | } | |
693 | if (!register_cached (regnum)) | |
5c27f28a | 694 | target_fetch_registers (regnum); |
3fadccb3 AC |
695 | } |
696 | /* Copy the value directly into the register cache. */ | |
697 | memcpy (buf, (regcache->raw_registers | |
698 | + regcache->descr->register_offset[regnum]), | |
699 | regcache->descr->sizeof_register[regnum]); | |
61a0eb5b AC |
700 | } |
701 | ||
28fc6740 AC |
702 | void |
703 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
704 | { | |
705 | char *buf; | |
706 | gdb_assert (regcache != NULL); | |
707 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
708 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
709 | regcache_raw_read (regcache, regnum, buf); | |
710 | (*val) = extract_signed_integer (buf, | |
711 | regcache->descr->sizeof_register[regnum]); | |
712 | } | |
713 | ||
714 | void | |
715 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
716 | ULONGEST *val) | |
717 | { | |
718 | char *buf; | |
719 | gdb_assert (regcache != NULL); | |
720 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
721 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
722 | regcache_raw_read (regcache, regnum, buf); | |
723 | (*val) = extract_unsigned_integer (buf, | |
724 | regcache->descr->sizeof_register[regnum]); | |
725 | } | |
726 | ||
c00dcbe9 MK |
727 | void |
728 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
729 | { | |
730 | void *buf; | |
731 | gdb_assert (regcache != NULL); | |
732 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
733 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
734 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
735 | regcache_raw_write (regcache, regnum, buf); | |
736 | } | |
737 | ||
738 | void | |
739 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
740 | ULONGEST val) | |
741 | { | |
742 | void *buf; | |
743 | gdb_assert (regcache != NULL); | |
744 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
745 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
746 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
747 | regcache_raw_write (regcache, regnum, buf); | |
748 | } | |
749 | ||
61a0eb5b AC |
750 | void |
751 | read_register_gen (int regnum, char *buf) | |
752 | { | |
3fadccb3 AC |
753 | gdb_assert (current_regcache != NULL); |
754 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
755 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
756 | { |
757 | legacy_read_register_gen (regnum, buf); | |
758 | return; | |
759 | } | |
68365089 AC |
760 | regcache_cooked_read (current_regcache, regnum, buf); |
761 | } | |
762 | ||
763 | void | |
29e1842b | 764 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 765 | { |
d138e37a | 766 | gdb_assert (regnum >= 0); |
68365089 AC |
767 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
768 | if (regnum < regcache->descr->nr_raw_registers) | |
769 | regcache_raw_read (regcache, regnum, buf); | |
d138e37a | 770 | else |
68365089 AC |
771 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
772 | regnum, buf); | |
61a0eb5b AC |
773 | } |
774 | ||
a378f419 AC |
775 | void |
776 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
777 | LONGEST *val) | |
778 | { | |
779 | char *buf; | |
780 | gdb_assert (regcache != NULL); | |
781 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
782 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
783 | regcache_cooked_read (regcache, regnum, buf); | |
784 | (*val) = extract_signed_integer (buf, | |
785 | regcache->descr->sizeof_register[regnum]); | |
786 | } | |
787 | ||
788 | void | |
789 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
790 | ULONGEST *val) | |
791 | { | |
792 | char *buf; | |
793 | gdb_assert (regcache != NULL); | |
794 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
795 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
796 | regcache_cooked_read (regcache, regnum, buf); | |
797 | (*val) = extract_unsigned_integer (buf, | |
798 | regcache->descr->sizeof_register[regnum]); | |
799 | } | |
800 | ||
5ebd2499 ND |
801 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
802 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 803 | |
61a0eb5b | 804 | static void |
1aaa5f99 | 805 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
806 | { |
807 | int size; | |
61a0eb5b | 808 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
809 | |
810 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
811 | change the registers array if something writes to this register. */ | |
5ebd2499 | 812 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
813 | return; |
814 | ||
39f77062 | 815 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
816 | { |
817 | registers_changed (); | |
39f77062 | 818 | registers_ptid = inferior_ptid; |
32178cab MS |
819 | } |
820 | ||
5ebd2499 | 821 | size = REGISTER_RAW_SIZE (regnum); |
32178cab | 822 | |
7302a204 | 823 | if (real_register (regnum)) |
1297a2f0 MS |
824 | { |
825 | /* If we have a valid copy of the register, and new value == old | |
826 | value, then don't bother doing the actual store. */ | |
827 | if (register_cached (regnum) | |
3fadccb3 AC |
828 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
829 | == 0)) | |
1297a2f0 MS |
830 | return; |
831 | else | |
832 | target_prepare_to_store (); | |
833 | } | |
32178cab | 834 | |
3fadccb3 | 835 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 836 | |
7302a204 | 837 | set_register_cached (regnum, 1); |
5c27f28a | 838 | target_store_registers (regnum); |
32178cab MS |
839 | } |
840 | ||
61a0eb5b | 841 | void |
1aaa5f99 | 842 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 843 | { |
3fadccb3 AC |
844 | gdb_assert (regcache != NULL && buf != NULL); |
845 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
846 | ||
847 | if (regcache->passthrough_p | |
848 | && regcache->descr->legacy_p) | |
849 | { | |
850 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
851 | silently and very indirectly updates the regcache's buffers | |
852 | via the globals register_valid[] and registers[]. */ | |
853 | gdb_assert (regcache == current_regcache); | |
854 | legacy_write_register_gen (regnum, buf); | |
855 | return; | |
856 | } | |
857 | ||
858 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
859 | change the registers array if something writes to this register. */ | |
860 | if (CANNOT_STORE_REGISTER (regnum)) | |
861 | return; | |
862 | ||
863 | /* Handle the simple case first -> not write through so just store | |
864 | value in cache. */ | |
865 | if (!regcache->passthrough_p) | |
866 | { | |
867 | memcpy ((regcache->raw_registers | |
868 | + regcache->descr->register_offset[regnum]), buf, | |
869 | regcache->descr->sizeof_register[regnum]); | |
870 | regcache->raw_register_valid_p[regnum] = 1; | |
871 | return; | |
872 | } | |
873 | ||
874 | /* Make certain that the correct cache is selected. */ | |
875 | gdb_assert (regcache == current_regcache); | |
876 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
877 | { | |
878 | registers_changed (); | |
879 | registers_ptid = inferior_ptid; | |
880 | } | |
881 | ||
882 | /* If we have a valid copy of the register, and new value == old | |
883 | value, then don't bother doing the actual store. */ | |
884 | if (regcache_valid_p (regcache, regnum) | |
885 | && (memcmp (register_buffer (regcache, regnum), buf, | |
886 | regcache->descr->sizeof_register[regnum]) == 0)) | |
887 | return; | |
888 | ||
889 | target_prepare_to_store (); | |
890 | memcpy (register_buffer (regcache, regnum), buf, | |
891 | regcache->descr->sizeof_register[regnum]); | |
892 | regcache->raw_register_valid_p[regnum] = 1; | |
5c27f28a | 893 | target_store_registers (regnum); |
61a0eb5b AC |
894 | } |
895 | ||
896 | void | |
897 | write_register_gen (int regnum, char *buf) | |
898 | { | |
3fadccb3 AC |
899 | gdb_assert (current_regcache != NULL); |
900 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
901 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
902 | { |
903 | legacy_write_register_gen (regnum, buf); | |
904 | return; | |
905 | } | |
68365089 AC |
906 | regcache_cooked_write (current_regcache, regnum, buf); |
907 | } | |
908 | ||
909 | void | |
29e1842b | 910 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 911 | { |
d138e37a | 912 | gdb_assert (regnum >= 0); |
68365089 AC |
913 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
914 | if (regnum < regcache->descr->nr_raw_registers) | |
915 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 916 | else |
68365089 | 917 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 918 | regnum, buf); |
61a0eb5b AC |
919 | } |
920 | ||
32178cab MS |
921 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
922 | into registers starting with the MYREGSTART'th byte of register data. */ | |
923 | ||
924 | void | |
925 | write_register_bytes (int myregstart, char *myaddr, int inlen) | |
926 | { | |
927 | int myregend = myregstart + inlen; | |
5ebd2499 | 928 | int regnum; |
32178cab MS |
929 | |
930 | target_prepare_to_store (); | |
931 | ||
932 | /* Scan through the registers updating any that are covered by the | |
933 | range myregstart<=>myregend using write_register_gen, which does | |
934 | nice things like handling threads, and avoiding updates when the | |
935 | new and old contents are the same. */ | |
936 | ||
5ebd2499 | 937 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
938 | { |
939 | int regstart, regend; | |
940 | ||
5ebd2499 ND |
941 | regstart = REGISTER_BYTE (regnum); |
942 | regend = regstart + REGISTER_RAW_SIZE (regnum); | |
32178cab MS |
943 | |
944 | /* Is this register completely outside the range the user is writing? */ | |
945 | if (myregend <= regstart || regend <= myregstart) | |
946 | /* do nothing */ ; | |
947 | ||
948 | /* Is this register completely within the range the user is writing? */ | |
949 | else if (myregstart <= regstart && regend <= myregend) | |
5ebd2499 | 950 | write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
951 | |
952 | /* The register partially overlaps the range being written. */ | |
953 | else | |
954 | { | |
e6cbd02a | 955 | char *regbuf = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
956 | /* What's the overlap between this register's bytes and |
957 | those the caller wants to write? */ | |
958 | int overlapstart = max (regstart, myregstart); | |
959 | int overlapend = min (regend, myregend); | |
960 | ||
961 | /* We may be doing a partial update of an invalid register. | |
962 | Update it from the target before scribbling on it. */ | |
5ebd2499 | 963 | read_register_gen (regnum, regbuf); |
32178cab MS |
964 | |
965 | memcpy (registers + overlapstart, | |
966 | myaddr + (overlapstart - myregstart), | |
967 | overlapend - overlapstart); | |
968 | ||
5c27f28a | 969 | target_store_registers (regnum); |
32178cab MS |
970 | } |
971 | } | |
972 | } | |
973 | ||
06c0b04e AC |
974 | /* Perform a partial register transfer using a read, modify, write |
975 | operation. */ | |
976 | ||
977 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
978 | void *buf); | |
979 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
980 | const void *buf); | |
981 | ||
982 | void | |
983 | regcache_xfer_part (struct regcache *regcache, int regnum, | |
984 | int offset, int len, void *in, const void *out, | |
985 | regcache_read_ftype *read, regcache_write_ftype *write) | |
986 | { | |
987 | struct regcache_descr *descr = regcache->descr; | |
988 | bfd_byte *reg = alloca (descr->max_register_size); | |
989 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); | |
990 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
991 | /* Something to do? */ | |
992 | if (offset + len == 0) | |
993 | return; | |
994 | /* Read (when needed) ... */ | |
995 | if (in != NULL | |
996 | || offset > 0 | |
997 | || offset + len < descr->sizeof_register[regnum]) | |
998 | { | |
999 | gdb_assert (read != NULL); | |
1000 | read (regcache, regnum, reg); | |
1001 | } | |
1002 | /* ... modify ... */ | |
1003 | if (in != NULL) | |
1004 | memcpy (in, reg + offset, len); | |
1005 | if (out != NULL) | |
1006 | memcpy (reg + offset, out, len); | |
1007 | /* ... write (when needed). */ | |
1008 | if (out != NULL) | |
1009 | { | |
1010 | gdb_assert (write != NULL); | |
1011 | write (regcache, regnum, reg); | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | void | |
1016 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
1017 | int offset, int len, void *buf) | |
1018 | { | |
1019 | struct regcache_descr *descr = regcache->descr; | |
1020 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1021 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1022 | regcache_raw_read, regcache_raw_write); | |
1023 | } | |
1024 | ||
1025 | void | |
1026 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
1027 | int offset, int len, const void *buf) | |
1028 | { | |
1029 | struct regcache_descr *descr = regcache->descr; | |
1030 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1031 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1032 | regcache_raw_read, regcache_raw_write); | |
1033 | } | |
1034 | ||
1035 | void | |
1036 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
1037 | int offset, int len, void *buf) | |
1038 | { | |
1039 | struct regcache_descr *descr = regcache->descr; | |
1040 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1041 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1042 | regcache_cooked_read, regcache_cooked_write); | |
1043 | } | |
1044 | ||
1045 | void | |
1046 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
1047 | int offset, int len, const void *buf) | |
1048 | { | |
1049 | struct regcache_descr *descr = regcache->descr; | |
1050 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1051 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1052 | regcache_cooked_read, regcache_cooked_write); | |
1053 | } | |
32178cab | 1054 | |
d3b22ed5 AC |
1055 | /* Hack to keep code that view the register buffer as raw bytes |
1056 | working. */ | |
1057 | ||
1058 | int | |
1059 | register_offset_hack (struct gdbarch *gdbarch, int regnum) | |
1060 | { | |
1061 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
1062 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1063 | return descr->register_offset[regnum]; | |
1064 | } | |
1065 | ||
1066 | static void | |
1067 | cooked_xfer_using_offset_hack (struct regcache *regcache, | |
1068 | int buf_start, int buf_len, void *in_b, | |
1069 | const void *out_b) | |
1070 | { | |
1071 | struct regcache_descr *descr = regcache->descr; | |
1072 | struct gdbarch *gdbarch = descr->gdbarch; | |
1073 | bfd_byte *in_buf = in_b; | |
1074 | const bfd_byte *out_buf = out_b; | |
1075 | int buf_end = buf_start + buf_len; | |
1076 | int regnum; | |
1077 | char *reg_buf = alloca (descr->max_register_size); | |
1078 | ||
1079 | /* NOTE: cagney/2002-08-17: This code assumes that the register | |
1080 | offsets are strictly increasing and do not overlap. If this | |
1081 | isn't the case then the bug is in the target architecture and NOT | |
1082 | this code. */ | |
1083 | ||
1084 | /* NOTE: cagney/2002-08-17: This code assumes that only the | |
1085 | registers covered by BUF_START:BUF_LEN should be transfered. If, | |
1086 | for some reason, there is a gap between two registers, then that | |
1087 | gap isn't transfered. (The gap shouldn't be there but that is | |
1088 | another story.) */ | |
1089 | ||
1090 | /* Iterate through all registers looking for those that lie within | |
1091 | BUF_START:BUF_LEN. */ | |
1092 | ||
1093 | for (regnum = 0; regnum < descr->nr_cooked_registers; regnum++) | |
1094 | { | |
1095 | /* The register's location. */ | |
1096 | int reg_start = descr->register_offset[regnum]; | |
1097 | int reg_len = descr->sizeof_register[regnum]; | |
1098 | int reg_end = reg_start + reg_len; | |
1099 | ||
1100 | /* The START, END and LEN that falls within the current | |
1101 | register. */ | |
1102 | int xfer_start; | |
1103 | int xfer_end; | |
1104 | int xfer_len; | |
1105 | ||
1106 | /* start = max (reg_start, buf_start) */ | |
1107 | if (reg_start > buf_start) | |
1108 | xfer_start = reg_start; | |
1109 | else | |
1110 | xfer_start = buf_start; | |
1111 | ||
1112 | /* end = min (reg_end, buf_end) */ | |
1113 | if (reg_end < buf_end) | |
1114 | xfer_end = reg_end; | |
1115 | else | |
1116 | xfer_end = buf_end; | |
1117 | ||
1118 | /* The number of bytes to transfer. If there isn't anything to | |
1119 | transfer (the end is before the start) this will be -ve. */ | |
1120 | xfer_len = xfer_end - xfer_start; | |
1121 | ||
1122 | if (xfer_len > 0) | |
1123 | regcache_xfer_part (regcache, regnum, xfer_start - reg_start, | |
1124 | xfer_len, in_b, out_b, regcache_cooked_read, | |
1125 | regcache_cooked_write); | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | void | |
1130 | regcache_cooked_read_using_offset_hack (struct regcache *regcache, | |
1131 | int buf_start, int buf_len, void *b) | |
1132 | { | |
1133 | cooked_xfer_using_offset_hack (regcache, buf_start, buf_len, b, NULL); | |
1134 | } | |
1135 | ||
1136 | void | |
1137 | regcache_cooked_write_using_offset_hack (struct regcache *regcache, | |
1138 | int buf_start, int buf_len, | |
1139 | const void *b) | |
1140 | { | |
1141 | cooked_xfer_using_offset_hack (regcache, buf_start, buf_len, NULL, b); | |
1142 | } | |
1143 | ||
5ebd2499 | 1144 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1145 | |
173155e8 | 1146 | ULONGEST |
5ebd2499 | 1147 | read_register (int regnum) |
32178cab | 1148 | { |
61a0eb5b AC |
1149 | char *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1150 | read_register_gen (regnum, buf); | |
1151 | return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
32178cab MS |
1152 | } |
1153 | ||
173155e8 | 1154 | ULONGEST |
39f77062 | 1155 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1156 | { |
39f77062 | 1157 | ptid_t save_ptid; |
32178cab MS |
1158 | int save_pid; |
1159 | CORE_ADDR retval; | |
1160 | ||
39f77062 | 1161 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1162 | return read_register (regnum); |
32178cab | 1163 | |
39f77062 | 1164 | save_ptid = inferior_ptid; |
32178cab | 1165 | |
39f77062 | 1166 | inferior_ptid = ptid; |
32178cab | 1167 | |
5ebd2499 | 1168 | retval = read_register (regnum); |
32178cab | 1169 | |
39f77062 | 1170 | inferior_ptid = save_ptid; |
32178cab MS |
1171 | |
1172 | return retval; | |
1173 | } | |
1174 | ||
5ebd2499 | 1175 | /* Return the contents of register REGNUM as a signed integer. */ |
173155e8 AC |
1176 | |
1177 | LONGEST | |
5ebd2499 | 1178 | read_signed_register (int regnum) |
173155e8 | 1179 | { |
61a0eb5b AC |
1180 | void *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
1181 | read_register_gen (regnum, buf); | |
1182 | return (extract_signed_integer (buf, REGISTER_RAW_SIZE (regnum))); | |
173155e8 AC |
1183 | } |
1184 | ||
1185 | LONGEST | |
39f77062 | 1186 | read_signed_register_pid (int regnum, ptid_t ptid) |
173155e8 | 1187 | { |
39f77062 | 1188 | ptid_t save_ptid; |
173155e8 AC |
1189 | LONGEST retval; |
1190 | ||
39f77062 | 1191 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1192 | return read_signed_register (regnum); |
173155e8 | 1193 | |
39f77062 | 1194 | save_ptid = inferior_ptid; |
173155e8 | 1195 | |
39f77062 | 1196 | inferior_ptid = ptid; |
173155e8 | 1197 | |
5ebd2499 | 1198 | retval = read_signed_register (regnum); |
173155e8 | 1199 | |
39f77062 | 1200 | inferior_ptid = save_ptid; |
173155e8 AC |
1201 | |
1202 | return retval; | |
1203 | } | |
1204 | ||
5ebd2499 | 1205 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
1206 | |
1207 | void | |
5ebd2499 | 1208 | write_register (int regnum, LONGEST val) |
32178cab | 1209 | { |
61a0eb5b | 1210 | void *buf; |
32178cab | 1211 | int size; |
5ebd2499 | 1212 | size = REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1213 | buf = alloca (size); |
1214 | store_signed_integer (buf, size, (LONGEST) val); | |
61a0eb5b | 1215 | write_register_gen (regnum, buf); |
32178cab MS |
1216 | } |
1217 | ||
1218 | void | |
39f77062 | 1219 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 1220 | { |
39f77062 | 1221 | ptid_t save_ptid; |
32178cab | 1222 | |
39f77062 | 1223 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 1224 | { |
5ebd2499 | 1225 | write_register (regnum, val); |
32178cab MS |
1226 | return; |
1227 | } | |
1228 | ||
39f77062 | 1229 | save_ptid = inferior_ptid; |
32178cab | 1230 | |
39f77062 | 1231 | inferior_ptid = ptid; |
32178cab | 1232 | |
5ebd2499 | 1233 | write_register (regnum, val); |
32178cab | 1234 | |
39f77062 | 1235 | inferior_ptid = save_ptid; |
32178cab MS |
1236 | } |
1237 | ||
1238 | /* SUPPLY_REGISTER() | |
1239 | ||
5ebd2499 | 1240 | Record that register REGNUM contains VAL. This is used when the |
32178cab MS |
1241 | value is obtained from the inferior or core dump, so there is no |
1242 | need to store the value there. | |
1243 | ||
1244 | If VAL is a NULL pointer, then it's probably an unsupported register. | |
5ebd2499 | 1245 | We just set its value to all zeros. We might want to record this |
32178cab MS |
1246 | fact, and report it to the users of read_register and friends. */ |
1247 | ||
1248 | void | |
1aaa5f99 | 1249 | supply_register (int regnum, const void *val) |
32178cab MS |
1250 | { |
1251 | #if 1 | |
39f77062 | 1252 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
1253 | { |
1254 | registers_changed (); | |
39f77062 | 1255 | registers_ptid = inferior_ptid; |
32178cab MS |
1256 | } |
1257 | #endif | |
1258 | ||
7302a204 | 1259 | set_register_cached (regnum, 1); |
32178cab | 1260 | if (val) |
3fadccb3 | 1261 | memcpy (register_buffer (current_regcache, regnum), val, |
5ebd2499 | 1262 | REGISTER_RAW_SIZE (regnum)); |
32178cab | 1263 | else |
3fadccb3 | 1264 | memset (register_buffer (current_regcache, regnum), '\000', |
5ebd2499 | 1265 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
1266 | |
1267 | /* On some architectures, e.g. HPPA, there are a few stray bits in | |
1268 | some registers, that the rest of the code would like to ignore. */ | |
1269 | ||
61a0eb5b AC |
1270 | /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is |
1271 | going to be deprecated. Instead architectures will leave the raw | |
1272 | register value as is and instead clean things up as they pass | |
d8124050 | 1273 | through the method gdbarch_pseudo_register_read() clean up the |
61a0eb5b AC |
1274 | values. */ |
1275 | ||
4ee3352d | 1276 | #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE |
0b434a00 AC |
1277 | DEPRECATED_CLEAN_UP_REGISTER_VALUE \ |
1278 | (regnum, register_buffer (current_regcache, regnum)); | |
32178cab MS |
1279 | #endif |
1280 | } | |
1281 | ||
193cb69f AC |
1282 | void |
1283 | regcache_collect (int regnum, void *buf) | |
1284 | { | |
3fadccb3 AC |
1285 | memcpy (buf, register_buffer (current_regcache, regnum), |
1286 | REGISTER_RAW_SIZE (regnum)); | |
193cb69f AC |
1287 | } |
1288 | ||
1289 | ||
8227c0ff AC |
1290 | /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special |
1291 | handling for registers PC, SP, and FP. */ | |
32178cab | 1292 | |
4e052eda AC |
1293 | /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(), |
1294 | read_pc_pid(), read_pc(), generic_target_write_pc(), | |
1295 | write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(), | |
8227c0ff AC |
1296 | generic_target_write_sp(), write_sp(), generic_target_read_fp() and |
1297 | read_fp(), will eventually be moved out of the reg-cache into | |
1298 | either frame.[hc] or to the multi-arch framework. The are not part | |
1299 | of the raw register cache. */ | |
4e052eda | 1300 | |
32178cab MS |
1301 | /* This routine is getting awfully cluttered with #if's. It's probably |
1302 | time to turn this into READ_PC and define it in the tm.h file. | |
1303 | Ditto for write_pc. | |
1304 | ||
1305 | 1999-06-08: The following were re-written so that it assumes the | |
8e1a459b | 1306 | existence of a TARGET_READ_PC et.al. macro. A default generic |
32178cab MS |
1307 | version of that macro is made available where needed. |
1308 | ||
1309 | Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled | |
1310 | by the multi-arch framework, it will eventually be possible to | |
1311 | eliminate the intermediate read_pc_pid(). The client would call | |
1312 | TARGET_READ_PC directly. (cagney). */ | |
1313 | ||
32178cab | 1314 | CORE_ADDR |
39f77062 | 1315 | generic_target_read_pc (ptid_t ptid) |
32178cab MS |
1316 | { |
1317 | #ifdef PC_REGNUM | |
1318 | if (PC_REGNUM >= 0) | |
1319 | { | |
39f77062 | 1320 | CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, ptid)); |
32178cab MS |
1321 | return pc_val; |
1322 | } | |
1323 | #endif | |
8e65ff28 AC |
1324 | internal_error (__FILE__, __LINE__, |
1325 | "generic_target_read_pc"); | |
32178cab MS |
1326 | return 0; |
1327 | } | |
1328 | ||
1329 | CORE_ADDR | |
39f77062 | 1330 | read_pc_pid (ptid_t ptid) |
32178cab | 1331 | { |
39f77062 | 1332 | ptid_t saved_inferior_ptid; |
32178cab MS |
1333 | CORE_ADDR pc_val; |
1334 | ||
39f77062 KB |
1335 | /* In case ptid != inferior_ptid. */ |
1336 | saved_inferior_ptid = inferior_ptid; | |
1337 | inferior_ptid = ptid; | |
32178cab | 1338 | |
39f77062 | 1339 | pc_val = TARGET_READ_PC (ptid); |
32178cab | 1340 | |
39f77062 | 1341 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1342 | return pc_val; |
1343 | } | |
1344 | ||
1345 | CORE_ADDR | |
1346 | read_pc (void) | |
1347 | { | |
39f77062 | 1348 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1349 | } |
1350 | ||
32178cab | 1351 | void |
39f77062 | 1352 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab MS |
1353 | { |
1354 | #ifdef PC_REGNUM | |
1355 | if (PC_REGNUM >= 0) | |
39f77062 | 1356 | write_register_pid (PC_REGNUM, pc, ptid); |
32178cab | 1357 | if (NPC_REGNUM >= 0) |
39f77062 | 1358 | write_register_pid (NPC_REGNUM, pc + 4, ptid); |
32178cab | 1359 | #else |
8e65ff28 AC |
1360 | internal_error (__FILE__, __LINE__, |
1361 | "generic_target_write_pc"); | |
32178cab MS |
1362 | #endif |
1363 | } | |
1364 | ||
1365 | void | |
39f77062 | 1366 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1367 | { |
39f77062 | 1368 | ptid_t saved_inferior_ptid; |
32178cab | 1369 | |
39f77062 KB |
1370 | /* In case ptid != inferior_ptid. */ |
1371 | saved_inferior_ptid = inferior_ptid; | |
1372 | inferior_ptid = ptid; | |
32178cab | 1373 | |
39f77062 | 1374 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1375 | |
39f77062 | 1376 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1377 | } |
1378 | ||
1379 | void | |
1380 | write_pc (CORE_ADDR pc) | |
1381 | { | |
39f77062 | 1382 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1383 | } |
1384 | ||
1385 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1386 | ||
32178cab MS |
1387 | CORE_ADDR |
1388 | generic_target_read_sp (void) | |
1389 | { | |
1390 | #ifdef SP_REGNUM | |
1391 | if (SP_REGNUM >= 0) | |
1392 | return read_register (SP_REGNUM); | |
1393 | #endif | |
8e65ff28 AC |
1394 | internal_error (__FILE__, __LINE__, |
1395 | "generic_target_read_sp"); | |
32178cab MS |
1396 | } |
1397 | ||
1398 | CORE_ADDR | |
1399 | read_sp (void) | |
1400 | { | |
1401 | return TARGET_READ_SP (); | |
1402 | } | |
1403 | ||
32178cab MS |
1404 | void |
1405 | generic_target_write_sp (CORE_ADDR val) | |
1406 | { | |
1407 | #ifdef SP_REGNUM | |
1408 | if (SP_REGNUM >= 0) | |
1409 | { | |
1410 | write_register (SP_REGNUM, val); | |
1411 | return; | |
1412 | } | |
1413 | #endif | |
8e65ff28 AC |
1414 | internal_error (__FILE__, __LINE__, |
1415 | "generic_target_write_sp"); | |
32178cab MS |
1416 | } |
1417 | ||
1418 | void | |
1419 | write_sp (CORE_ADDR val) | |
1420 | { | |
1421 | TARGET_WRITE_SP (val); | |
1422 | } | |
1423 | ||
32178cab MS |
1424 | CORE_ADDR |
1425 | generic_target_read_fp (void) | |
1426 | { | |
1427 | #ifdef FP_REGNUM | |
1428 | if (FP_REGNUM >= 0) | |
1429 | return read_register (FP_REGNUM); | |
1430 | #endif | |
8e65ff28 AC |
1431 | internal_error (__FILE__, __LINE__, |
1432 | "generic_target_read_fp"); | |
32178cab MS |
1433 | } |
1434 | ||
1435 | CORE_ADDR | |
1436 | read_fp (void) | |
1437 | { | |
1438 | return TARGET_READ_FP (); | |
1439 | } | |
1440 | ||
705152c5 MS |
1441 | /* ARGSUSED */ |
1442 | static void | |
1443 | reg_flush_command (char *command, int from_tty) | |
1444 | { | |
1445 | /* Force-flush the register cache. */ | |
1446 | registers_changed (); | |
1447 | if (from_tty) | |
1448 | printf_filtered ("Register cache flushed.\n"); | |
1449 | } | |
1450 | ||
32178cab MS |
1451 | static void |
1452 | build_regcache (void) | |
3fadccb3 AC |
1453 | { |
1454 | current_regcache = regcache_xmalloc (current_gdbarch); | |
1455 | current_regcache->passthrough_p = 1; | |
1456 | registers = deprecated_grub_regcache_for_registers (current_regcache); | |
1457 | register_valid = deprecated_grub_regcache_for_register_valid (current_regcache); | |
1458 | } | |
1459 | ||
af030b9a AC |
1460 | static void |
1461 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1462 | const unsigned char *buf, long len) | |
1463 | { | |
1464 | int i; | |
1465 | switch (endian) | |
1466 | { | |
1467 | case BFD_ENDIAN_BIG: | |
1468 | for (i = 0; i < len; i++) | |
1469 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1470 | break; | |
1471 | case BFD_ENDIAN_LITTLE: | |
1472 | for (i = len - 1; i >= 0; i--) | |
1473 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1474 | break; | |
1475 | default: | |
1476 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | enum regcache_dump_what | |
1481 | { | |
1482 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked | |
1483 | }; | |
1484 | ||
1485 | static void | |
1486 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1487 | enum regcache_dump_what what_to_dump) | |
1488 | { | |
1489 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
1490 | int regnum; | |
1491 | int footnote_nr = 0; | |
1492 | int footnote_register_size = 0; | |
1493 | int footnote_register_offset = 0; | |
1494 | int footnote_register_type_name_null = 0; | |
1495 | long register_offset = 0; | |
1496 | unsigned char *buf = alloca (regcache->descr->max_register_size); | |
1497 | ||
1498 | #if 0 | |
1499 | fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p); | |
1500 | fprintf_unfiltered (file, "nr_raw_registers %d\n", | |
1501 | regcache->descr->nr_raw_registers); | |
1502 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1503 | regcache->descr->nr_cooked_registers); | |
1504 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1505 | regcache->descr->sizeof_raw_registers); | |
1506 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1507 | regcache->descr->sizeof_raw_register_valid_p); | |
1508 | fprintf_unfiltered (file, "max_register_size %ld\n", | |
1509 | regcache->descr->max_register_size); | |
1510 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); | |
1511 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1512 | #endif | |
1513 | ||
1514 | gdb_assert (regcache->descr->nr_cooked_registers | |
1515 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1516 | ||
1517 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1518 | { | |
1519 | /* Name. */ | |
1520 | if (regnum < 0) | |
1521 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1522 | else | |
1523 | { | |
1524 | const char *p = REGISTER_NAME (regnum); | |
1525 | if (p == NULL) | |
1526 | p = ""; | |
1527 | else if (p[0] == '\0') | |
1528 | p = "''"; | |
1529 | fprintf_unfiltered (file, " %-10s", p); | |
1530 | } | |
1531 | ||
1532 | /* Number. */ | |
1533 | if (regnum < 0) | |
1534 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1535 | else | |
1536 | fprintf_unfiltered (file, " %4d", regnum); | |
1537 | ||
1538 | /* Relative number. */ | |
1539 | if (regnum < 0) | |
1540 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1541 | else if (regnum < NUM_REGS) | |
1542 | fprintf_unfiltered (file, " %4d", regnum); | |
1543 | else | |
1544 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1545 | ||
1546 | /* Offset. */ | |
1547 | if (regnum < 0) | |
1548 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1549 | else | |
1550 | { | |
1551 | fprintf_unfiltered (file, " %6ld", | |
1552 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 1553 | if (register_offset != regcache->descr->register_offset[regnum] |
d3b22ed5 AC |
1554 | || register_offset != REGISTER_BYTE (regnum) |
1555 | || (regnum > 0 | |
1556 | && (regcache->descr->register_offset[regnum] | |
1557 | != (regcache->descr->register_offset[regnum - 1] | |
1558 | + regcache->descr->sizeof_register[regnum - 1]))) | |
1559 | ) | |
af030b9a AC |
1560 | { |
1561 | if (!footnote_register_offset) | |
1562 | footnote_register_offset = ++footnote_nr; | |
1563 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1564 | } | |
1565 | else | |
1566 | fprintf_unfiltered (file, " "); | |
1567 | register_offset = (regcache->descr->register_offset[regnum] | |
1568 | + regcache->descr->sizeof_register[regnum]); | |
1569 | } | |
1570 | ||
1571 | /* Size. */ | |
1572 | if (regnum < 0) | |
1573 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1574 | else | |
1575 | { | |
1576 | fprintf_unfiltered (file, " %5ld", | |
1577 | regcache->descr->sizeof_register[regnum]); | |
1578 | if ((regcache->descr->sizeof_register[regnum] | |
1579 | != REGISTER_RAW_SIZE (regnum)) | |
1580 | || (regcache->descr->sizeof_register[regnum] | |
1581 | != REGISTER_VIRTUAL_SIZE (regnum)) | |
1582 | || (regcache->descr->sizeof_register[regnum] | |
bb425013 AC |
1583 | != TYPE_LENGTH (register_type (regcache->descr->gdbarch, |
1584 | regnum))) | |
af030b9a AC |
1585 | ) |
1586 | { | |
1587 | if (!footnote_register_size) | |
1588 | footnote_register_size = ++footnote_nr; | |
1589 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1590 | } | |
1591 | else | |
1592 | fprintf_unfiltered (file, " "); | |
1593 | } | |
1594 | ||
1595 | /* Type. */ | |
1596 | if (regnum < 0) | |
1597 | fprintf_unfiltered (file, " %-20s", "Type"); | |
1598 | else | |
1599 | { | |
1600 | static const char blt[] = "builtin_type"; | |
bb425013 AC |
1601 | const char *t = TYPE_NAME (register_type (regcache->descr->gdbarch, |
1602 | regnum)); | |
af030b9a AC |
1603 | if (t == NULL) |
1604 | { | |
1605 | char *n; | |
1606 | if (!footnote_register_type_name_null) | |
1607 | footnote_register_type_name_null = ++footnote_nr; | |
1608 | xasprintf (&n, "*%d", footnote_register_type_name_null); | |
1609 | make_cleanup (xfree, n); | |
1610 | t = n; | |
1611 | } | |
1612 | /* Chop a leading builtin_type. */ | |
1613 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1614 | t += strlen (blt); | |
1615 | fprintf_unfiltered (file, " %-20s", t); | |
1616 | } | |
1617 | ||
1618 | /* Value, raw. */ | |
1619 | if (what_to_dump == regcache_dump_raw) | |
1620 | { | |
1621 | if (regnum < 0) | |
1622 | fprintf_unfiltered (file, "Raw value"); | |
1623 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1624 | fprintf_unfiltered (file, "<cooked>"); | |
1625 | else if (!regcache_valid_p (regcache, regnum)) | |
1626 | fprintf_unfiltered (file, "<invalid>"); | |
1627 | else | |
1628 | { | |
1629 | regcache_raw_read (regcache, regnum, buf); | |
1630 | fprintf_unfiltered (file, "0x"); | |
1631 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1632 | REGISTER_RAW_SIZE (regnum)); | |
1633 | } | |
1634 | } | |
1635 | ||
1636 | /* Value, cooked. */ | |
1637 | if (what_to_dump == regcache_dump_cooked) | |
1638 | { | |
1639 | if (regnum < 0) | |
1640 | fprintf_unfiltered (file, "Cooked value"); | |
1641 | else | |
1642 | { | |
1643 | regcache_cooked_read (regcache, regnum, buf); | |
1644 | fprintf_unfiltered (file, "0x"); | |
1645 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1646 | REGISTER_VIRTUAL_SIZE (regnum)); | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | fprintf_unfiltered (file, "\n"); | |
1651 | } | |
1652 | ||
1653 | if (footnote_register_size) | |
1654 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1655 | footnote_register_size); | |
1656 | if (footnote_register_offset) | |
1657 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1658 | footnote_register_offset); | |
1659 | if (footnote_register_type_name_null) | |
1660 | fprintf_unfiltered (file, | |
1661 | "*%d: Register type's name NULL.\n", | |
1662 | footnote_register_type_name_null); | |
1663 | do_cleanups (cleanups); | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1668 | { | |
1669 | if (args == NULL) | |
1670 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1671 | else | |
1672 | { | |
1673 | struct ui_file *file = gdb_fopen (args, "w"); | |
1674 | if (file == NULL) | |
1675 | perror_with_name ("maintenance print architecture"); | |
1676 | regcache_dump (current_regcache, file, what_to_dump); | |
1677 | ui_file_delete (file); | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | static void | |
1682 | maintenance_print_registers (char *args, int from_tty) | |
1683 | { | |
1684 | regcache_print (args, regcache_dump_none); | |
1685 | } | |
1686 | ||
1687 | static void | |
1688 | maintenance_print_raw_registers (char *args, int from_tty) | |
1689 | { | |
1690 | regcache_print (args, regcache_dump_raw); | |
1691 | } | |
1692 | ||
1693 | static void | |
1694 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1695 | { | |
1696 | regcache_print (args, regcache_dump_cooked); | |
1697 | } | |
1698 | ||
32178cab MS |
1699 | void |
1700 | _initialize_regcache (void) | |
1701 | { | |
3fadccb3 AC |
1702 | regcache_descr_handle = register_gdbarch_data (init_regcache_descr, |
1703 | xfree_regcache_descr); | |
1704 | REGISTER_GDBARCH_SWAP (current_regcache); | |
32178cab MS |
1705 | register_gdbarch_swap (®isters, sizeof (registers), NULL); |
1706 | register_gdbarch_swap (®ister_valid, sizeof (register_valid), NULL); | |
1707 | register_gdbarch_swap (NULL, 0, build_regcache); | |
705152c5 MS |
1708 | |
1709 | add_com ("flushregs", class_maintenance, reg_flush_command, | |
1710 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1711 | |
1712 | /* Initialize the thread/process associated with the current set of | |
1713 | registers. For now, -1 is special, and means `no current process'. */ | |
1714 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1715 | |
1716 | add_cmd ("registers", class_maintenance, | |
1717 | maintenance_print_registers, | |
1718 | "Print the internal register configuration.\ | |
1719 | Takes an optional file parameter.", | |
1720 | &maintenanceprintlist); | |
1721 | add_cmd ("raw-registers", class_maintenance, | |
1722 | maintenance_print_raw_registers, | |
1723 | "Print the internal register configuration including raw values.\ | |
1724 | Takes an optional file parameter.", | |
1725 | &maintenanceprintlist); | |
1726 | add_cmd ("cooked-registers", class_maintenance, | |
1727 | maintenance_print_cooked_registers, | |
1728 | "Print the internal register configuration including cooked values.\ | |
1729 | Takes an optional file parameter.", | |
1730 | &maintenanceprintlist); | |
1731 | ||
32178cab | 1732 | } |