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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; | |
067df2e5 AC |
69 | long sizeof_cooked_registers; |
70 | long sizeof_cooked_register_valid_p; | |
d138e37a AC |
71 | |
72 | /* Offset and size (in 8 bit bytes), of reach register in the | |
73 | register cache. All registers (including those in the range | |
74 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
75 | Assigning all registers an offset makes it possible to keep | |
76 | legacy code, such as that found in read_register_bytes() and | |
77 | write_register_bytes() working. */ | |
3fadccb3 | 78 | long *register_offset; |
3fadccb3 | 79 | long *sizeof_register; |
3fadccb3 | 80 | |
d138e37a AC |
81 | /* Useful constant. Largest of all the registers. */ |
82 | long max_register_size; | |
bb425013 AC |
83 | |
84 | /* Cached table containing the type of each register. */ | |
85 | struct type **register_type; | |
3fadccb3 AC |
86 | }; |
87 | ||
bb425013 AC |
88 | void |
89 | init_legacy_regcache_descr (struct gdbarch *gdbarch, | |
90 | struct regcache_descr *descr) | |
3fadccb3 AC |
91 | { |
92 | int i; | |
3fadccb3 AC |
93 | /* FIXME: cagney/2002-05-11: gdbarch_data() should take that |
94 | ``gdbarch'' as a parameter. */ | |
95 | gdb_assert (gdbarch != NULL); | |
96 | ||
3fadccb3 | 97 | /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers |
067df2e5 AC |
98 | in the register cache. Unfortunatly some architectures still |
99 | rely on this and the pseudo_register_write() method. */ | |
d138e37a | 100 | descr->nr_raw_registers = descr->nr_cooked_registers; |
067df2e5 AC |
101 | descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p; |
102 | ||
103 | /* Compute the offset of each register. Legacy architectures define | |
104 | REGISTER_BYTE() so use that. */ | |
105 | /* FIXME: cagney/2002-11-07: Instead of using REGISTER_BYTE() this | |
106 | code should, as is done in init_regcache_descr(), compute the | |
107 | offets at runtime. This currently isn't possible as some ISAs | |
108 | define overlapping register regions - see the mess in | |
109 | read_register_bytes() and write_register_bytes() registers. */ | |
d138e37a AC |
110 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
111 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 112 | descr->max_register_size = 0; |
d138e37a | 113 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 114 | { |
067df2e5 AC |
115 | /* FIXME: cagney/2001-12-04: This code shouldn't need to use |
116 | REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the | |
117 | buffer out so that certain registers just happen to overlap. | |
118 | Ulgh! New targets use gdbarch's register read/write and | |
119 | entirely avoid this uglyness. */ | |
3fadccb3 AC |
120 | descr->register_offset[i] = REGISTER_BYTE (i); |
121 | descr->sizeof_register[i] = REGISTER_RAW_SIZE (i); | |
122 | if (descr->max_register_size < REGISTER_RAW_SIZE (i)) | |
123 | descr->max_register_size = REGISTER_RAW_SIZE (i); | |
0ed04cce AC |
124 | if (descr->max_register_size < REGISTER_VIRTUAL_SIZE (i)) |
125 | descr->max_register_size = REGISTER_VIRTUAL_SIZE (i); | |
3fadccb3 AC |
126 | } |
127 | ||
067df2e5 AC |
128 | /* Compute the real size of the register buffer. Start out by |
129 | trusting REGISTER_BYTES, but then adjust it upwards should that | |
130 | be found to not be sufficient. */ | |
131 | /* FIXME: cagney/2002-11-05: Instead of using REGISTER_BYTES, this | |
132 | code should, as is done in init_regcache_descr(), compute the | |
133 | total number of register bytes using the accumulated offsets. */ | |
134 | descr->sizeof_cooked_registers = REGISTER_BYTES; /* OK use. */ | |
d138e37a | 135 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
136 | { |
137 | long regend; | |
138 | /* Keep extending the buffer so that there is always enough | |
139 | space for all registers. The comparison is necessary since | |
140 | legacy code is free to put registers in random places in the | |
141 | buffer separated by holes. Once REGISTER_BYTE() is killed | |
142 | this can be greatly simplified. */ | |
3fadccb3 | 143 | regend = descr->register_offset[i] + descr->sizeof_register[i]; |
067df2e5 AC |
144 | if (descr->sizeof_cooked_registers < regend) |
145 | descr->sizeof_cooked_registers = regend; | |
3fadccb3 | 146 | } |
067df2e5 AC |
147 | /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers |
148 | in the register cache. Unfortunatly some architectures still | |
149 | rely on this and the pseudo_register_write() method. */ | |
150 | descr->sizeof_raw_registers = descr->sizeof_cooked_registers; | |
3fadccb3 AC |
151 | } |
152 | ||
153 | static void * | |
154 | init_regcache_descr (struct gdbarch *gdbarch) | |
155 | { | |
156 | int i; | |
157 | struct regcache_descr *descr; | |
158 | gdb_assert (gdbarch != NULL); | |
159 | ||
bb425013 AC |
160 | /* Create an initial, zero filled, table. */ |
161 | descr = XCALLOC (1, struct regcache_descr); | |
3fadccb3 | 162 | descr->gdbarch = gdbarch; |
3fadccb3 | 163 | |
d138e37a AC |
164 | /* Total size of the register space. The raw registers are mapped |
165 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 166 | either mapped onto raw-registers or memory. */ |
d138e37a | 167 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
067df2e5 | 168 | descr->sizeof_cooked_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 | 169 | |
bb425013 AC |
170 | /* Fill in a table of register types. */ |
171 | descr->register_type = XCALLOC (descr->nr_cooked_registers, | |
172 | struct type *); | |
173 | for (i = 0; i < descr->nr_cooked_registers; i++) | |
174 | { | |
175 | descr->register_type[i] = REGISTER_VIRTUAL_TYPE (i); | |
176 | } | |
177 | ||
178 | /* If an old style architecture, fill in the remainder of the | |
179 | register cache descriptor using the register macros. */ | |
180 | if (!gdbarch_pseudo_register_read_p (gdbarch) | |
181 | && !gdbarch_pseudo_register_write_p (gdbarch)) | |
182 | { | |
183 | descr->legacy_p = 1; | |
184 | init_legacy_regcache_descr (gdbarch, descr); | |
185 | return descr; | |
186 | } | |
187 | ||
3fadccb3 AC |
188 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
189 | into the register cache. */ | |
190 | descr->nr_raw_registers = NUM_REGS; | |
53826de9 AC |
191 | |
192 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
193 | array. This pretects GDB from erant code that accesses elements | |
194 | of the global register_valid_p[] array in the range [NUM_REGS | |
195 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
067df2e5 | 196 | descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p; |
3fadccb3 | 197 | |
067df2e5 | 198 | /* Lay out the register cache. |
3fadccb3 | 199 | |
bb425013 AC |
200 | NOTE: cagney/2002-05-22: Only register_type() is used when |
201 | constructing the register cache. It is assumed that the | |
202 | register's raw size, virtual size and type length are all the | |
203 | same. */ | |
3fadccb3 AC |
204 | |
205 | { | |
206 | long offset = 0; | |
d138e37a AC |
207 | descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long); |
208 | descr->register_offset = XCALLOC (descr->nr_cooked_registers, long); | |
3fadccb3 | 209 | descr->max_register_size = 0; |
d138e37a | 210 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 211 | { |
bb425013 | 212 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
213 | descr->register_offset[i] = offset; |
214 | offset += descr->sizeof_register[i]; | |
215 | if (descr->max_register_size < descr->sizeof_register[i]) | |
216 | descr->max_register_size = descr->sizeof_register[i]; | |
217 | } | |
218 | /* Set the real size of the register cache buffer. */ | |
067df2e5 | 219 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
220 | } |
221 | ||
067df2e5 AC |
222 | /* FIXME: cagney/2002-05-22: Should only need to allocate space for |
223 | the raw registers. Unfortunatly some code still accesses the | |
224 | register array directly using the global registers[]. Until that | |
225 | code has been purged, play safe and over allocating the register | |
226 | buffer. Ulgh! */ | |
227 | descr->sizeof_raw_registers = descr->sizeof_cooked_registers; | |
228 | ||
3fadccb3 AC |
229 | #if 0 |
230 | /* Sanity check. Confirm that the assumptions about gdbarch are | |
231 | true. The REGCACHE_DESCR_HANDLE is set before doing the checks | |
232 | so that targets using the generic methods supplied by regcache | |
233 | don't go into infinite recursion trying to, again, create the | |
234 | regcache. */ | |
235 | set_gdbarch_data (gdbarch, regcache_descr_handle, descr); | |
d138e37a | 236 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 AC |
237 | { |
238 | gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i)); | |
239 | gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i)); | |
240 | gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i)); | |
241 | } | |
242 | /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */ | |
243 | #endif | |
244 | ||
245 | return descr; | |
246 | } | |
247 | ||
248 | static struct regcache_descr * | |
249 | regcache_descr (struct gdbarch *gdbarch) | |
250 | { | |
251 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
252 | } | |
253 | ||
254 | static void | |
255 | xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr) | |
256 | { | |
257 | struct regcache_descr *descr = ptr; | |
258 | if (descr == NULL) | |
259 | return; | |
260 | xfree (descr->register_offset); | |
261 | xfree (descr->sizeof_register); | |
262 | descr->register_offset = NULL; | |
263 | descr->sizeof_register = NULL; | |
264 | xfree (descr); | |
265 | } | |
266 | ||
bb425013 AC |
267 | /* Utility functions returning useful register attributes stored in |
268 | the regcache descr. */ | |
269 | ||
270 | struct type * | |
271 | register_type (struct gdbarch *gdbarch, int regnum) | |
272 | { | |
273 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
274 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
275 | return descr->register_type[regnum]; | |
276 | } | |
277 | ||
0ed04cce AC |
278 | /* Utility functions returning useful register attributes stored in |
279 | the regcache descr. */ | |
280 | ||
281 | int | |
282 | max_register_size (struct gdbarch *gdbarch) | |
283 | { | |
284 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
285 | return descr->max_register_size; | |
286 | } | |
287 | ||
08a617da AC |
288 | int |
289 | register_size (struct gdbarch *gdbarch, int regnum) | |
290 | { | |
291 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
292 | int size; | |
293 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); | |
294 | size = descr->sizeof_register[regnum]; | |
295 | gdb_assert (size == REGISTER_RAW_SIZE (regnum)); /* OK */ | |
296 | gdb_assert (size == REGISTER_RAW_SIZE (regnum)); /* OK */ | |
297 | return size; | |
298 | } | |
299 | ||
3fadccb3 AC |
300 | /* The register cache for storing raw register values. */ |
301 | ||
302 | struct regcache | |
303 | { | |
304 | struct regcache_descr *descr; | |
51b1fe4e AC |
305 | /* The register buffers. A read-only register cache can hold the |
306 | full [0 .. NUM_REGS + NUM_PSEUDO_REGS) while a read/write | |
307 | register cache can only hold [0 .. NUM_REGS). */ | |
308 | char *registers; | |
309 | char *register_valid_p; | |
2d28509a AC |
310 | /* Is this a read-only cache? A read-only cache is used for saving |
311 | the target's register state (e.g, across an inferior function | |
312 | call or just before forcing a function return). A read-only | |
313 | cache can only be updated via the methods regcache_dup() and | |
314 | regcache_cpy(). The actual contents are determined by the | |
315 | reggroup_save and reggroup_restore methods. */ | |
316 | int readonly_p; | |
3fadccb3 AC |
317 | }; |
318 | ||
319 | struct regcache * | |
320 | regcache_xmalloc (struct gdbarch *gdbarch) | |
321 | { | |
322 | struct regcache_descr *descr; | |
323 | struct regcache *regcache; | |
324 | gdb_assert (gdbarch != NULL); | |
325 | descr = regcache_descr (gdbarch); | |
326 | regcache = XMALLOC (struct regcache); | |
327 | regcache->descr = descr; | |
51b1fe4e | 328 | regcache->registers |
3fadccb3 | 329 | = XCALLOC (descr->sizeof_raw_registers, char); |
51b1fe4e | 330 | regcache->register_valid_p |
3fadccb3 | 331 | = XCALLOC (descr->sizeof_raw_register_valid_p, char); |
2d28509a | 332 | regcache->readonly_p = 1; |
3fadccb3 AC |
333 | return regcache; |
334 | } | |
335 | ||
336 | void | |
337 | regcache_xfree (struct regcache *regcache) | |
338 | { | |
339 | if (regcache == NULL) | |
340 | return; | |
51b1fe4e AC |
341 | xfree (regcache->registers); |
342 | xfree (regcache->register_valid_p); | |
3fadccb3 AC |
343 | xfree (regcache); |
344 | } | |
345 | ||
36160dc4 AC |
346 | void |
347 | do_regcache_xfree (void *data) | |
348 | { | |
349 | regcache_xfree (data); | |
350 | } | |
351 | ||
352 | struct cleanup * | |
353 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
354 | { | |
355 | return make_cleanup (do_regcache_xfree, regcache); | |
356 | } | |
357 | ||
51b1fe4e AC |
358 | /* Return a pointer to register REGNUM's buffer cache. */ |
359 | ||
360 | static char * | |
361 | register_buffer (struct regcache *regcache, int regnum) | |
362 | { | |
363 | return regcache->registers + regcache->descr->register_offset[regnum]; | |
364 | } | |
365 | ||
2d28509a AC |
366 | void |
367 | regcache_save (struct regcache *dst, struct regcache *src) | |
368 | { | |
369 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
370 | int regnum; | |
371 | /* The SRC and DST register caches had better belong to the same | |
372 | architecture. */ | |
373 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
374 | /* The DST should be `read-only', if it wasn't then the save would | |
375 | end up trying to write the register values out through to the | |
376 | target. */ | |
377 | gdb_assert (!src->readonly_p); | |
378 | gdb_assert (dst->readonly_p); | |
379 | /* Clear the dest. */ | |
380 | memset (dst->registers, 0, dst->descr->sizeof_cooked_registers); | |
381 | memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p); | |
382 | /* Copy over any registers (identified by their membership in the | |
383 | save_reggroup) and mark them as valid. The full [0 | |
384 | .. NUM_REGS+NUM_PSEUDO_REGS) range is checked since some | |
385 | architectures need to save/restore `cooked' registers that live | |
386 | in memory. */ | |
387 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) | |
388 | { | |
389 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
390 | { | |
391 | regcache_cooked_read (src, regnum, register_buffer (dst, regnum)); | |
392 | dst->register_valid_p[regnum] = 1; | |
393 | } | |
394 | } | |
395 | } | |
396 | ||
397 | void | |
398 | regcache_restore (struct regcache *dst, struct regcache *src) | |
399 | { | |
400 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
401 | int regnum; | |
402 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
403 | gdb_assert (!dst->readonly_p); | |
404 | gdb_assert (src->readonly_p); | |
405 | /* Copy over any registers, being careful to only restore those that | |
406 | were both saved and need to be restored. The full [0 | |
407 | .. NUM_REGS+NUM_PSEUDO_REGS) range is checked since some | |
408 | architectures need to save/restore `cooked' registers that live | |
409 | in memory. */ | |
410 | for (regnum = 0; regnum < src->descr->nr_cooked_registers; regnum++) | |
411 | { | |
412 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup) | |
413 | && src->register_valid_p[regnum]) | |
414 | { | |
415 | regcache_cooked_write (dst, regnum, register_buffer (src, regnum)); | |
416 | } | |
417 | } | |
418 | } | |
419 | ||
3fadccb3 AC |
420 | void |
421 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
422 | { | |
423 | int i; | |
424 | char *buf; | |
425 | gdb_assert (src != NULL && dst != NULL); | |
426 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
427 | gdb_assert (src != dst); | |
2d28509a AC |
428 | gdb_assert (src->readonly_p || dst->readonly_p); |
429 | if (!src->readonly_p) | |
430 | regcache_save (dst, src); | |
431 | else if (!dst->readonly_p) | |
432 | regcache_restore (dst, src); | |
433 | else | |
434 | regcache_cpy_no_passthrough (dst, src); | |
3fadccb3 AC |
435 | } |
436 | ||
437 | void | |
438 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
439 | { | |
440 | int i; | |
441 | gdb_assert (src != NULL && dst != NULL); | |
442 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
443 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
444 | move of data into the current_regcache(). Doing this would be | |
445 | silly - it would mean that valid_p would be completly invalid. */ | |
446 | gdb_assert (dst != current_regcache); | |
51b1fe4e AC |
447 | memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers); |
448 | memcpy (dst->register_valid_p, src->register_valid_p, | |
3fadccb3 AC |
449 | dst->descr->sizeof_raw_register_valid_p); |
450 | } | |
451 | ||
452 | struct regcache * | |
453 | regcache_dup (struct regcache *src) | |
454 | { | |
455 | struct regcache *newbuf; | |
456 | gdb_assert (current_regcache != NULL); | |
457 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
458 | regcache_cpy (newbuf, src); | |
459 | return newbuf; | |
460 | } | |
461 | ||
462 | struct regcache * | |
463 | regcache_dup_no_passthrough (struct regcache *src) | |
464 | { | |
465 | struct regcache *newbuf; | |
466 | gdb_assert (current_regcache != NULL); | |
467 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
468 | regcache_cpy_no_passthrough (newbuf, src); | |
469 | return newbuf; | |
470 | } | |
471 | ||
472 | int | |
473 | regcache_valid_p (struct regcache *regcache, int regnum) | |
474 | { | |
475 | gdb_assert (regcache != NULL); | |
476 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
51b1fe4e | 477 | return regcache->register_valid_p[regnum]; |
3fadccb3 AC |
478 | } |
479 | ||
3fadccb3 AC |
480 | char * |
481 | deprecated_grub_regcache_for_registers (struct regcache *regcache) | |
482 | { | |
51b1fe4e | 483 | return regcache->registers; |
3fadccb3 AC |
484 | } |
485 | ||
486 | char * | |
487 | deprecated_grub_regcache_for_register_valid (struct regcache *regcache) | |
488 | { | |
51b1fe4e | 489 | return regcache->register_valid_p; |
3fadccb3 AC |
490 | } |
491 | ||
492 | /* Global structure containing the current regcache. */ | |
493 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
8262ee23 | 494 | deprecated_register_valid[] currently point into this structure. */ |
3fadccb3 AC |
495 | struct regcache *current_regcache; |
496 | ||
5ebd2499 | 497 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
498 | recording if the register values have been changed (eg. by the |
499 | user). Therefore all registers must be written back to the | |
500 | target when appropriate. */ | |
501 | ||
502 | /* REGISTERS contains the cached register values (in target byte order). */ | |
503 | ||
524d7c18 | 504 | char *deprecated_registers; |
32178cab | 505 | |
8262ee23 | 506 | /* DEPRECATED_REGISTER_VALID is 0 if the register needs to be fetched, |
32178cab MS |
507 | 1 if it has been fetched, and |
508 | -1 if the register value was not available. | |
c97dcfc7 AC |
509 | |
510 | "Not available" indicates that the target is not not able to supply | |
511 | the register at this state. The register may become available at a | |
512 | later time (after the next resume). This often occures when GDB is | |
513 | manipulating a target that contains only a snapshot of the entire | |
514 | system being debugged - some of the registers in such a system may | |
515 | not have been saved. */ | |
32178cab | 516 | |
8262ee23 | 517 | signed char *deprecated_register_valid; |
32178cab | 518 | |
39f77062 | 519 | /* The thread/process associated with the current set of registers. */ |
32178cab | 520 | |
39f77062 | 521 | static ptid_t registers_ptid; |
32178cab MS |
522 | |
523 | /* | |
524 | * FUNCTIONS: | |
525 | */ | |
526 | ||
527 | /* REGISTER_CACHED() | |
528 | ||
529 | Returns 0 if the value is not in the cache (needs fetch). | |
530 | >0 if the value is in the cache. | |
531 | <0 if the value is permanently unavailable (don't ask again). */ | |
532 | ||
533 | int | |
534 | register_cached (int regnum) | |
535 | { | |
8262ee23 | 536 | return deprecated_register_valid[regnum]; |
32178cab MS |
537 | } |
538 | ||
7302a204 ND |
539 | /* Record that REGNUM's value is cached if STATE is >0, uncached but |
540 | fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */ | |
541 | ||
542 | void | |
543 | set_register_cached (int regnum, int state) | |
544 | { | |
53826de9 AC |
545 | gdb_assert (regnum >= 0); |
546 | gdb_assert (regnum < current_regcache->descr->nr_raw_registers); | |
51b1fe4e | 547 | current_regcache->register_valid_p[regnum] = state; |
7302a204 ND |
548 | } |
549 | ||
550 | /* Return whether register REGNUM is a real register. */ | |
551 | ||
552 | static int | |
553 | real_register (int regnum) | |
554 | { | |
555 | return regnum >= 0 && regnum < NUM_REGS; | |
556 | } | |
557 | ||
32178cab MS |
558 | /* Low level examining and depositing of registers. |
559 | ||
560 | The caller is responsible for making sure that the inferior is | |
561 | stopped before calling the fetching routines, or it will get | |
562 | garbage. (a change from GDB version 3, in which the caller got the | |
563 | value from the last stop). */ | |
564 | ||
565 | /* REGISTERS_CHANGED () | |
566 | ||
567 | Indicate that registers may have changed, so invalidate the cache. */ | |
568 | ||
569 | void | |
570 | registers_changed (void) | |
571 | { | |
572 | int i; | |
32178cab | 573 | |
39f77062 | 574 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
575 | |
576 | /* Force cleanup of any alloca areas if using C alloca instead of | |
577 | a builtin alloca. This particular call is used to clean up | |
578 | areas allocated by low level target code which may build up | |
579 | during lengthy interactions between gdb and the target before | |
580 | gdb gives control to the user (ie watchpoints). */ | |
581 | alloca (0); | |
582 | ||
53826de9 | 583 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
7302a204 | 584 | set_register_cached (i, 0); |
32178cab MS |
585 | |
586 | if (registers_changed_hook) | |
587 | registers_changed_hook (); | |
588 | } | |
589 | ||
2b9e5f3f | 590 | /* DEPRECATED_REGISTERS_FETCHED () |
32178cab MS |
591 | |
592 | Indicate that all registers have been fetched, so mark them all valid. */ | |
593 | ||
31e9866e AC |
594 | /* NOTE: cagney/2001-12-04: This function does not set valid on the |
595 | pseudo-register range since pseudo registers are always supplied | |
596 | using supply_register(). */ | |
597 | /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target | |
598 | code was blatting the registers[] array and then calling this. | |
599 | Since targets should only be using supply_register() the need for | |
600 | this function/hack is eliminated. */ | |
32178cab MS |
601 | |
602 | void | |
2b9e5f3f | 603 | deprecated_registers_fetched (void) |
32178cab MS |
604 | { |
605 | int i; | |
32178cab | 606 | |
a728f042 | 607 | for (i = 0; i < NUM_REGS; i++) |
7302a204 | 608 | set_register_cached (i, 1); |
fcdc5976 | 609 | /* Do not assume that the pseudo-regs have also been fetched. |
31e9866e | 610 | Fetching all real regs NEVER accounts for pseudo-regs. */ |
32178cab MS |
611 | } |
612 | ||
73937e03 AC |
613 | /* deprecated_read_register_bytes and deprecated_write_register_bytes |
614 | are generally a *BAD* idea. They are inefficient because they need | |
615 | to check for partial updates, which can only be done by scanning | |
616 | through all of the registers and seeing if the bytes that are being | |
617 | read/written fall inside of an invalid register. [The main reason | |
618 | this is necessary is that register sizes can vary, so a simple | |
619 | index won't suffice.] It is far better to call read_register_gen | |
620 | and write_register_gen if you want to get at the raw register | |
621 | contents, as it only takes a regnum as an argument, and therefore | |
622 | can't do a partial register update. | |
32178cab MS |
623 | |
624 | Prior to the recent fixes to check for partial updates, both read | |
73937e03 AC |
625 | and deprecated_write_register_bytes always checked to see if any |
626 | registers were stale, and then called target_fetch_registers (-1) | |
627 | to update the whole set. This caused really slowed things down for | |
628 | remote targets. */ | |
32178cab MS |
629 | |
630 | /* Copy INLEN bytes of consecutive data from registers | |
631 | starting with the INREGBYTE'th byte of register data | |
632 | into memory at MYADDR. */ | |
633 | ||
634 | void | |
73937e03 | 635 | deprecated_read_register_bytes (int in_start, char *in_buf, int in_len) |
32178cab | 636 | { |
61a0eb5b | 637 | int in_end = in_start + in_len; |
5ebd2499 | 638 | int regnum; |
61a0eb5b | 639 | char *reg_buf = alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
640 | |
641 | /* See if we are trying to read bytes from out-of-date registers. If so, | |
642 | update just those registers. */ | |
643 | ||
5ebd2499 | 644 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab | 645 | { |
61a0eb5b AC |
646 | int reg_start; |
647 | int reg_end; | |
648 | int reg_len; | |
649 | int start; | |
650 | int end; | |
651 | int byte; | |
32178cab | 652 | |
61a0eb5b AC |
653 | reg_start = REGISTER_BYTE (regnum); |
654 | reg_len = REGISTER_RAW_SIZE (regnum); | |
655 | reg_end = reg_start + reg_len; | |
32178cab | 656 | |
61a0eb5b | 657 | if (reg_end <= in_start || in_end <= reg_start) |
5ebd2499 | 658 | /* The range the user wants to read doesn't overlap with regnum. */ |
32178cab MS |
659 | continue; |
660 | ||
275f450c AC |
661 | if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0') |
662 | /* Force the cache to fetch the entire register. */ | |
4caf0990 | 663 | deprecated_read_register_gen (regnum, reg_buf); |
275f450c AC |
664 | else |
665 | /* Legacy note: even though this register is ``invalid'' we | |
666 | still need to return something. It would appear that some | |
667 | code relies on apparent gaps in the register array also | |
668 | being returned. */ | |
669 | /* FIXME: cagney/2001-08-18: This is just silly. It defeats | |
670 | the entire register read/write flow of control. Must | |
671 | resist temptation to return 0xdeadbeef. */ | |
524d7c18 | 672 | memcpy (reg_buf, &deprecated_registers[reg_start], reg_len); |
32178cab | 673 | |
61a0eb5b AC |
674 | /* Legacy note: This function, for some reason, allows a NULL |
675 | input buffer. If the buffer is NULL, the registers are still | |
676 | fetched, just the final transfer is skipped. */ | |
677 | if (in_buf == NULL) | |
678 | continue; | |
679 | ||
680 | /* start = max (reg_start, in_start) */ | |
681 | if (reg_start > in_start) | |
682 | start = reg_start; | |
683 | else | |
684 | start = in_start; | |
685 | ||
686 | /* end = min (reg_end, in_end) */ | |
687 | if (reg_end < in_end) | |
688 | end = reg_end; | |
689 | else | |
690 | end = in_end; | |
691 | ||
692 | /* Transfer just the bytes common to both IN_BUF and REG_BUF */ | |
693 | for (byte = start; byte < end; byte++) | |
165cd47f | 694 | { |
61a0eb5b | 695 | in_buf[byte - in_start] = reg_buf[byte - reg_start]; |
165cd47f | 696 | } |
32178cab | 697 | } |
32178cab MS |
698 | } |
699 | ||
5ebd2499 ND |
700 | /* Read register REGNUM into memory at MYADDR, which must be large |
701 | enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the | |
32178cab MS |
702 | register is known to be the size of a CORE_ADDR or smaller, |
703 | read_register can be used instead. */ | |
704 | ||
61a0eb5b AC |
705 | static void |
706 | legacy_read_register_gen (int regnum, char *myaddr) | |
32178cab | 707 | { |
61a0eb5b | 708 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
39f77062 | 709 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
710 | { |
711 | registers_changed (); | |
39f77062 | 712 | registers_ptid = inferior_ptid; |
32178cab MS |
713 | } |
714 | ||
7302a204 | 715 | if (!register_cached (regnum)) |
5c27f28a | 716 | target_fetch_registers (regnum); |
7302a204 | 717 | |
3fadccb3 | 718 | memcpy (myaddr, register_buffer (current_regcache, regnum), |
5ebd2499 | 719 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
720 | } |
721 | ||
61a0eb5b | 722 | void |
1aaa5f99 | 723 | regcache_raw_read (struct regcache *regcache, int regnum, void *buf) |
61a0eb5b | 724 | { |
3fadccb3 AC |
725 | gdb_assert (regcache != NULL && buf != NULL); |
726 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
727 | if (regcache->descr->legacy_p | |
2d28509a | 728 | && !regcache->readonly_p) |
3fadccb3 AC |
729 | { |
730 | gdb_assert (regcache == current_regcache); | |
731 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
732 | silently and very indirectly updates the regcache's regcache | |
8262ee23 | 733 | via the global deprecated_register_valid[]. */ |
3fadccb3 AC |
734 | legacy_read_register_gen (regnum, buf); |
735 | return; | |
736 | } | |
737 | /* Make certain that the register cache is up-to-date with respect | |
738 | to the current thread. This switching shouldn't be necessary | |
739 | only there is still only one target side register cache. Sigh! | |
740 | On the bright side, at least there is a regcache object. */ | |
2d28509a | 741 | if (!regcache->readonly_p) |
3fadccb3 AC |
742 | { |
743 | gdb_assert (regcache == current_regcache); | |
744 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
745 | { | |
746 | registers_changed (); | |
747 | registers_ptid = inferior_ptid; | |
748 | } | |
749 | if (!register_cached (regnum)) | |
5c27f28a | 750 | target_fetch_registers (regnum); |
3fadccb3 AC |
751 | } |
752 | /* Copy the value directly into the register cache. */ | |
51b1fe4e | 753 | memcpy (buf, register_buffer (regcache, regnum), |
3fadccb3 | 754 | regcache->descr->sizeof_register[regnum]); |
61a0eb5b AC |
755 | } |
756 | ||
28fc6740 AC |
757 | void |
758 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
759 | { | |
760 | char *buf; | |
761 | gdb_assert (regcache != NULL); | |
762 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
763 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
764 | regcache_raw_read (regcache, regnum, buf); | |
765 | (*val) = extract_signed_integer (buf, | |
766 | regcache->descr->sizeof_register[regnum]); | |
767 | } | |
768 | ||
769 | void | |
770 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
771 | ULONGEST *val) | |
772 | { | |
773 | char *buf; | |
774 | gdb_assert (regcache != NULL); | |
775 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
776 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
777 | regcache_raw_read (regcache, regnum, buf); | |
778 | (*val) = extract_unsigned_integer (buf, | |
779 | regcache->descr->sizeof_register[regnum]); | |
780 | } | |
781 | ||
c00dcbe9 MK |
782 | void |
783 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
784 | { | |
785 | void *buf; | |
786 | gdb_assert (regcache != NULL); | |
787 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
788 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
789 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
790 | regcache_raw_write (regcache, regnum, buf); | |
791 | } | |
792 | ||
793 | void | |
794 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
795 | ULONGEST val) | |
796 | { | |
797 | void *buf; | |
798 | gdb_assert (regcache != NULL); | |
799 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
800 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
801 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
802 | regcache_raw_write (regcache, regnum, buf); | |
803 | } | |
804 | ||
61a0eb5b | 805 | void |
4caf0990 | 806 | deprecated_read_register_gen (int regnum, char *buf) |
61a0eb5b | 807 | { |
3fadccb3 AC |
808 | gdb_assert (current_regcache != NULL); |
809 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
810 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
811 | { |
812 | legacy_read_register_gen (regnum, buf); | |
813 | return; | |
814 | } | |
68365089 AC |
815 | regcache_cooked_read (current_regcache, regnum, buf); |
816 | } | |
817 | ||
818 | void | |
29e1842b | 819 | regcache_cooked_read (struct regcache *regcache, int regnum, void *buf) |
68365089 | 820 | { |
d138e37a | 821 | gdb_assert (regnum >= 0); |
68365089 AC |
822 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
823 | if (regnum < regcache->descr->nr_raw_registers) | |
824 | regcache_raw_read (regcache, regnum, buf); | |
2d28509a AC |
825 | else if (regcache->readonly_p |
826 | && regnum < regcache->descr->nr_cooked_registers | |
827 | && regcache->register_valid_p[regnum]) | |
828 | /* Read-only register cache, perhaphs the cooked value was cached? */ | |
829 | memcpy (buf, register_buffer (regcache, regnum), | |
830 | regcache->descr->sizeof_register[regnum]); | |
d138e37a | 831 | else |
68365089 AC |
832 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
833 | regnum, buf); | |
61a0eb5b AC |
834 | } |
835 | ||
a378f419 AC |
836 | void |
837 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
838 | LONGEST *val) | |
839 | { | |
840 | char *buf; | |
841 | gdb_assert (regcache != NULL); | |
842 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
843 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
844 | regcache_cooked_read (regcache, regnum, buf); | |
845 | (*val) = extract_signed_integer (buf, | |
846 | regcache->descr->sizeof_register[regnum]); | |
847 | } | |
848 | ||
849 | void | |
850 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
851 | ULONGEST *val) | |
852 | { | |
853 | char *buf; | |
854 | gdb_assert (regcache != NULL); | |
855 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
856 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
857 | regcache_cooked_read (regcache, regnum, buf); | |
858 | (*val) = extract_unsigned_integer (buf, | |
859 | regcache->descr->sizeof_register[regnum]); | |
860 | } | |
861 | ||
5ebd2499 ND |
862 | /* Write register REGNUM at MYADDR to the target. MYADDR points at |
863 | REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */ | |
32178cab | 864 | |
61a0eb5b | 865 | static void |
1aaa5f99 | 866 | legacy_write_register_gen (int regnum, const void *myaddr) |
32178cab MS |
867 | { |
868 | int size; | |
61a0eb5b | 869 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); |
32178cab MS |
870 | |
871 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
872 | change the registers array if something writes to this register. */ | |
5ebd2499 | 873 | if (CANNOT_STORE_REGISTER (regnum)) |
32178cab MS |
874 | return; |
875 | ||
39f77062 | 876 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
877 | { |
878 | registers_changed (); | |
39f77062 | 879 | registers_ptid = inferior_ptid; |
32178cab MS |
880 | } |
881 | ||
5ebd2499 | 882 | size = REGISTER_RAW_SIZE (regnum); |
32178cab | 883 | |
7302a204 | 884 | if (real_register (regnum)) |
1297a2f0 MS |
885 | { |
886 | /* If we have a valid copy of the register, and new value == old | |
887 | value, then don't bother doing the actual store. */ | |
888 | if (register_cached (regnum) | |
3fadccb3 AC |
889 | && (memcmp (register_buffer (current_regcache, regnum), myaddr, size) |
890 | == 0)) | |
1297a2f0 MS |
891 | return; |
892 | else | |
893 | target_prepare_to_store (); | |
894 | } | |
32178cab | 895 | |
3fadccb3 | 896 | memcpy (register_buffer (current_regcache, regnum), myaddr, size); |
32178cab | 897 | |
7302a204 | 898 | set_register_cached (regnum, 1); |
5c27f28a | 899 | target_store_registers (regnum); |
32178cab MS |
900 | } |
901 | ||
61a0eb5b | 902 | void |
1aaa5f99 | 903 | regcache_raw_write (struct regcache *regcache, int regnum, const void *buf) |
61a0eb5b | 904 | { |
3fadccb3 AC |
905 | gdb_assert (regcache != NULL && buf != NULL); |
906 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
2d28509a | 907 | gdb_assert (!regcache->readonly_p); |
3fadccb3 | 908 | |
2d28509a | 909 | if (regcache->descr->legacy_p) |
3fadccb3 AC |
910 | { |
911 | /* For moment, just use underlying legacy code. Ulgh!!! This | |
912 | silently and very indirectly updates the regcache's buffers | |
8262ee23 | 913 | via the globals deprecated_register_valid[] and registers[]. */ |
3fadccb3 AC |
914 | gdb_assert (regcache == current_regcache); |
915 | legacy_write_register_gen (regnum, buf); | |
916 | return; | |
917 | } | |
918 | ||
919 | /* On the sparc, writing %g0 is a no-op, so we don't even want to | |
920 | change the registers array if something writes to this register. */ | |
921 | if (CANNOT_STORE_REGISTER (regnum)) | |
922 | return; | |
923 | ||
3fadccb3 AC |
924 | /* Make certain that the correct cache is selected. */ |
925 | gdb_assert (regcache == current_regcache); | |
926 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
927 | { | |
928 | registers_changed (); | |
929 | registers_ptid = inferior_ptid; | |
930 | } | |
931 | ||
932 | /* If we have a valid copy of the register, and new value == old | |
933 | value, then don't bother doing the actual store. */ | |
934 | if (regcache_valid_p (regcache, regnum) | |
935 | && (memcmp (register_buffer (regcache, regnum), buf, | |
936 | regcache->descr->sizeof_register[regnum]) == 0)) | |
937 | return; | |
938 | ||
939 | target_prepare_to_store (); | |
940 | memcpy (register_buffer (regcache, regnum), buf, | |
941 | regcache->descr->sizeof_register[regnum]); | |
51b1fe4e | 942 | regcache->register_valid_p[regnum] = 1; |
5c27f28a | 943 | target_store_registers (regnum); |
61a0eb5b AC |
944 | } |
945 | ||
946 | void | |
4caf0990 | 947 | deprecated_write_register_gen (int regnum, char *buf) |
61a0eb5b | 948 | { |
3fadccb3 AC |
949 | gdb_assert (current_regcache != NULL); |
950 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
951 | if (current_regcache->descr->legacy_p) | |
61a0eb5b AC |
952 | { |
953 | legacy_write_register_gen (regnum, buf); | |
954 | return; | |
955 | } | |
68365089 AC |
956 | regcache_cooked_write (current_regcache, regnum, buf); |
957 | } | |
958 | ||
959 | void | |
29e1842b | 960 | regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf) |
68365089 | 961 | { |
d138e37a | 962 | gdb_assert (regnum >= 0); |
68365089 AC |
963 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
964 | if (regnum < regcache->descr->nr_raw_registers) | |
965 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 966 | else |
68365089 | 967 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 968 | regnum, buf); |
61a0eb5b AC |
969 | } |
970 | ||
32178cab MS |
971 | /* Copy INLEN bytes of consecutive data from memory at MYADDR |
972 | into registers starting with the MYREGSTART'th byte of register data. */ | |
973 | ||
974 | void | |
73937e03 | 975 | deprecated_write_register_bytes (int myregstart, char *myaddr, int inlen) |
32178cab MS |
976 | { |
977 | int myregend = myregstart + inlen; | |
5ebd2499 | 978 | int regnum; |
32178cab MS |
979 | |
980 | target_prepare_to_store (); | |
981 | ||
982 | /* Scan through the registers updating any that are covered by the | |
983 | range myregstart<=>myregend using write_register_gen, which does | |
984 | nice things like handling threads, and avoiding updates when the | |
985 | new and old contents are the same. */ | |
986 | ||
5ebd2499 | 987 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
32178cab MS |
988 | { |
989 | int regstart, regend; | |
990 | ||
5ebd2499 ND |
991 | regstart = REGISTER_BYTE (regnum); |
992 | regend = regstart + REGISTER_RAW_SIZE (regnum); | |
32178cab MS |
993 | |
994 | /* Is this register completely outside the range the user is writing? */ | |
995 | if (myregend <= regstart || regend <= myregstart) | |
996 | /* do nothing */ ; | |
997 | ||
998 | /* Is this register completely within the range the user is writing? */ | |
999 | else if (myregstart <= regstart && regend <= myregend) | |
4caf0990 | 1000 | deprecated_write_register_gen (regnum, myaddr + (regstart - myregstart)); |
32178cab MS |
1001 | |
1002 | /* The register partially overlaps the range being written. */ | |
1003 | else | |
1004 | { | |
e6cbd02a | 1005 | char *regbuf = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
32178cab MS |
1006 | /* What's the overlap between this register's bytes and |
1007 | those the caller wants to write? */ | |
1008 | int overlapstart = max (regstart, myregstart); | |
1009 | int overlapend = min (regend, myregend); | |
1010 | ||
1011 | /* We may be doing a partial update of an invalid register. | |
1012 | Update it from the target before scribbling on it. */ | |
4caf0990 | 1013 | deprecated_read_register_gen (regnum, regbuf); |
32178cab | 1014 | |
524d7c18 | 1015 | memcpy (&deprecated_registers[overlapstart], |
32178cab MS |
1016 | myaddr + (overlapstart - myregstart), |
1017 | overlapend - overlapstart); | |
1018 | ||
5c27f28a | 1019 | target_store_registers (regnum); |
32178cab MS |
1020 | } |
1021 | } | |
1022 | } | |
1023 | ||
06c0b04e AC |
1024 | /* Perform a partial register transfer using a read, modify, write |
1025 | operation. */ | |
1026 | ||
1027 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
1028 | void *buf); | |
1029 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
1030 | const void *buf); | |
1031 | ||
1032 | void | |
1033 | regcache_xfer_part (struct regcache *regcache, int regnum, | |
1034 | int offset, int len, void *in, const void *out, | |
1035 | regcache_read_ftype *read, regcache_write_ftype *write) | |
1036 | { | |
1037 | struct regcache_descr *descr = regcache->descr; | |
1038 | bfd_byte *reg = alloca (descr->max_register_size); | |
1039 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); | |
1040 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
1041 | /* Something to do? */ | |
1042 | if (offset + len == 0) | |
1043 | return; | |
1044 | /* Read (when needed) ... */ | |
1045 | if (in != NULL | |
1046 | || offset > 0 | |
1047 | || offset + len < descr->sizeof_register[regnum]) | |
1048 | { | |
1049 | gdb_assert (read != NULL); | |
1050 | read (regcache, regnum, reg); | |
1051 | } | |
1052 | /* ... modify ... */ | |
1053 | if (in != NULL) | |
1054 | memcpy (in, reg + offset, len); | |
1055 | if (out != NULL) | |
1056 | memcpy (reg + offset, out, len); | |
1057 | /* ... write (when needed). */ | |
1058 | if (out != NULL) | |
1059 | { | |
1060 | gdb_assert (write != NULL); | |
1061 | write (regcache, regnum, reg); | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | void | |
1066 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
1067 | int offset, int len, void *buf) | |
1068 | { | |
1069 | struct regcache_descr *descr = regcache->descr; | |
1070 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1071 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1072 | regcache_raw_read, regcache_raw_write); | |
1073 | } | |
1074 | ||
1075 | void | |
1076 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
1077 | int offset, int len, const void *buf) | |
1078 | { | |
1079 | struct regcache_descr *descr = regcache->descr; | |
1080 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
1081 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1082 | regcache_raw_read, regcache_raw_write); | |
1083 | } | |
1084 | ||
1085 | void | |
1086 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
1087 | int offset, int len, void *buf) | |
1088 | { | |
1089 | struct regcache_descr *descr = regcache->descr; | |
1090 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1091 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
1092 | regcache_cooked_read, regcache_cooked_write); | |
1093 | } | |
1094 | ||
1095 | void | |
1096 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
1097 | int offset, int len, const void *buf) | |
1098 | { | |
1099 | struct regcache_descr *descr = regcache->descr; | |
1100 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1101 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
1102 | regcache_cooked_read, regcache_cooked_write); | |
1103 | } | |
32178cab | 1104 | |
d3b22ed5 AC |
1105 | /* Hack to keep code that view the register buffer as raw bytes |
1106 | working. */ | |
1107 | ||
1108 | int | |
1109 | register_offset_hack (struct gdbarch *gdbarch, int regnum) | |
1110 | { | |
1111 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
1112 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
1113 | return descr->register_offset[regnum]; | |
1114 | } | |
1115 | ||
5ebd2499 | 1116 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 1117 | |
173155e8 | 1118 | ULONGEST |
5ebd2499 | 1119 | read_register (int regnum) |
32178cab | 1120 | { |
61a0eb5b | 1121 | char *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
4caf0990 | 1122 | deprecated_read_register_gen (regnum, buf); |
61a0eb5b | 1123 | return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum))); |
32178cab MS |
1124 | } |
1125 | ||
173155e8 | 1126 | ULONGEST |
39f77062 | 1127 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 1128 | { |
39f77062 | 1129 | ptid_t save_ptid; |
32178cab MS |
1130 | int save_pid; |
1131 | CORE_ADDR retval; | |
1132 | ||
39f77062 | 1133 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1134 | return read_register (regnum); |
32178cab | 1135 | |
39f77062 | 1136 | save_ptid = inferior_ptid; |
32178cab | 1137 | |
39f77062 | 1138 | inferior_ptid = ptid; |
32178cab | 1139 | |
5ebd2499 | 1140 | retval = read_register (regnum); |
32178cab | 1141 | |
39f77062 | 1142 | inferior_ptid = save_ptid; |
32178cab MS |
1143 | |
1144 | return retval; | |
1145 | } | |
1146 | ||
5ebd2499 | 1147 | /* Return the contents of register REGNUM as a signed integer. */ |
173155e8 AC |
1148 | |
1149 | LONGEST | |
5ebd2499 | 1150 | read_signed_register (int regnum) |
173155e8 | 1151 | { |
61a0eb5b | 1152 | void *buf = alloca (REGISTER_RAW_SIZE (regnum)); |
4caf0990 | 1153 | deprecated_read_register_gen (regnum, buf); |
61a0eb5b | 1154 | return (extract_signed_integer (buf, REGISTER_RAW_SIZE (regnum))); |
173155e8 AC |
1155 | } |
1156 | ||
1157 | LONGEST | |
39f77062 | 1158 | read_signed_register_pid (int regnum, ptid_t ptid) |
173155e8 | 1159 | { |
39f77062 | 1160 | ptid_t save_ptid; |
173155e8 AC |
1161 | LONGEST retval; |
1162 | ||
39f77062 | 1163 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 1164 | return read_signed_register (regnum); |
173155e8 | 1165 | |
39f77062 | 1166 | save_ptid = inferior_ptid; |
173155e8 | 1167 | |
39f77062 | 1168 | inferior_ptid = ptid; |
173155e8 | 1169 | |
5ebd2499 | 1170 | retval = read_signed_register (regnum); |
173155e8 | 1171 | |
39f77062 | 1172 | inferior_ptid = save_ptid; |
173155e8 AC |
1173 | |
1174 | return retval; | |
1175 | } | |
1176 | ||
5ebd2499 | 1177 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
1178 | |
1179 | void | |
5ebd2499 | 1180 | write_register (int regnum, LONGEST val) |
32178cab | 1181 | { |
61a0eb5b | 1182 | void *buf; |
32178cab | 1183 | int size; |
5ebd2499 | 1184 | size = REGISTER_RAW_SIZE (regnum); |
32178cab MS |
1185 | buf = alloca (size); |
1186 | store_signed_integer (buf, size, (LONGEST) val); | |
4caf0990 | 1187 | deprecated_write_register_gen (regnum, buf); |
32178cab MS |
1188 | } |
1189 | ||
1190 | void | |
39f77062 | 1191 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 1192 | { |
39f77062 | 1193 | ptid_t save_ptid; |
32178cab | 1194 | |
39f77062 | 1195 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 1196 | { |
5ebd2499 | 1197 | write_register (regnum, val); |
32178cab MS |
1198 | return; |
1199 | } | |
1200 | ||
39f77062 | 1201 | save_ptid = inferior_ptid; |
32178cab | 1202 | |
39f77062 | 1203 | inferior_ptid = ptid; |
32178cab | 1204 | |
5ebd2499 | 1205 | write_register (regnum, val); |
32178cab | 1206 | |
39f77062 | 1207 | inferior_ptid = save_ptid; |
32178cab MS |
1208 | } |
1209 | ||
1210 | /* SUPPLY_REGISTER() | |
1211 | ||
5ebd2499 | 1212 | Record that register REGNUM contains VAL. This is used when the |
32178cab MS |
1213 | value is obtained from the inferior or core dump, so there is no |
1214 | need to store the value there. | |
1215 | ||
1216 | If VAL is a NULL pointer, then it's probably an unsupported register. | |
5ebd2499 | 1217 | We just set its value to all zeros. We might want to record this |
32178cab MS |
1218 | fact, and report it to the users of read_register and friends. */ |
1219 | ||
1220 | void | |
1aaa5f99 | 1221 | supply_register (int regnum, const void *val) |
32178cab MS |
1222 | { |
1223 | #if 1 | |
39f77062 | 1224 | if (! ptid_equal (registers_ptid, inferior_ptid)) |
32178cab MS |
1225 | { |
1226 | registers_changed (); | |
39f77062 | 1227 | registers_ptid = inferior_ptid; |
32178cab MS |
1228 | } |
1229 | #endif | |
1230 | ||
7302a204 | 1231 | set_register_cached (regnum, 1); |
32178cab | 1232 | if (val) |
3fadccb3 | 1233 | memcpy (register_buffer (current_regcache, regnum), val, |
5ebd2499 | 1234 | REGISTER_RAW_SIZE (regnum)); |
32178cab | 1235 | else |
3fadccb3 | 1236 | memset (register_buffer (current_regcache, regnum), '\000', |
5ebd2499 | 1237 | REGISTER_RAW_SIZE (regnum)); |
32178cab MS |
1238 | |
1239 | /* On some architectures, e.g. HPPA, there are a few stray bits in | |
1240 | some registers, that the rest of the code would like to ignore. */ | |
1241 | ||
61a0eb5b AC |
1242 | /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is |
1243 | going to be deprecated. Instead architectures will leave the raw | |
1244 | register value as is and instead clean things up as they pass | |
d8124050 | 1245 | through the method gdbarch_pseudo_register_read() clean up the |
61a0eb5b AC |
1246 | values. */ |
1247 | ||
4ee3352d | 1248 | #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE |
0b434a00 AC |
1249 | DEPRECATED_CLEAN_UP_REGISTER_VALUE \ |
1250 | (regnum, register_buffer (current_regcache, regnum)); | |
32178cab MS |
1251 | #endif |
1252 | } | |
1253 | ||
193cb69f AC |
1254 | void |
1255 | regcache_collect (int regnum, void *buf) | |
1256 | { | |
3fadccb3 AC |
1257 | memcpy (buf, register_buffer (current_regcache, regnum), |
1258 | REGISTER_RAW_SIZE (regnum)); | |
193cb69f AC |
1259 | } |
1260 | ||
1261 | ||
8227c0ff AC |
1262 | /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special |
1263 | handling for registers PC, SP, and FP. */ | |
32178cab | 1264 | |
4e052eda AC |
1265 | /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(), |
1266 | read_pc_pid(), read_pc(), generic_target_write_pc(), | |
1267 | write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(), | |
8227c0ff AC |
1268 | generic_target_write_sp(), write_sp(), generic_target_read_fp() and |
1269 | read_fp(), will eventually be moved out of the reg-cache into | |
1270 | either frame.[hc] or to the multi-arch framework. The are not part | |
1271 | of the raw register cache. */ | |
4e052eda | 1272 | |
32178cab MS |
1273 | /* This routine is getting awfully cluttered with #if's. It's probably |
1274 | time to turn this into READ_PC and define it in the tm.h file. | |
1275 | Ditto for write_pc. | |
1276 | ||
1277 | 1999-06-08: The following were re-written so that it assumes the | |
8e1a459b | 1278 | existence of a TARGET_READ_PC et.al. macro. A default generic |
32178cab MS |
1279 | version of that macro is made available where needed. |
1280 | ||
1281 | Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled | |
1282 | by the multi-arch framework, it will eventually be possible to | |
1283 | eliminate the intermediate read_pc_pid(). The client would call | |
1284 | TARGET_READ_PC directly. (cagney). */ | |
1285 | ||
32178cab | 1286 | CORE_ADDR |
39f77062 | 1287 | generic_target_read_pc (ptid_t ptid) |
32178cab MS |
1288 | { |
1289 | #ifdef PC_REGNUM | |
1290 | if (PC_REGNUM >= 0) | |
1291 | { | |
39f77062 | 1292 | CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, ptid)); |
32178cab MS |
1293 | return pc_val; |
1294 | } | |
1295 | #endif | |
8e65ff28 AC |
1296 | internal_error (__FILE__, __LINE__, |
1297 | "generic_target_read_pc"); | |
32178cab MS |
1298 | return 0; |
1299 | } | |
1300 | ||
1301 | CORE_ADDR | |
39f77062 | 1302 | read_pc_pid (ptid_t ptid) |
32178cab | 1303 | { |
39f77062 | 1304 | ptid_t saved_inferior_ptid; |
32178cab MS |
1305 | CORE_ADDR pc_val; |
1306 | ||
39f77062 KB |
1307 | /* In case ptid != inferior_ptid. */ |
1308 | saved_inferior_ptid = inferior_ptid; | |
1309 | inferior_ptid = ptid; | |
32178cab | 1310 | |
39f77062 | 1311 | pc_val = TARGET_READ_PC (ptid); |
32178cab | 1312 | |
39f77062 | 1313 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1314 | return pc_val; |
1315 | } | |
1316 | ||
1317 | CORE_ADDR | |
1318 | read_pc (void) | |
1319 | { | |
39f77062 | 1320 | return read_pc_pid (inferior_ptid); |
32178cab MS |
1321 | } |
1322 | ||
32178cab | 1323 | void |
39f77062 | 1324 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab MS |
1325 | { |
1326 | #ifdef PC_REGNUM | |
1327 | if (PC_REGNUM >= 0) | |
39f77062 | 1328 | write_register_pid (PC_REGNUM, pc, ptid); |
32178cab | 1329 | if (NPC_REGNUM >= 0) |
39f77062 | 1330 | write_register_pid (NPC_REGNUM, pc + 4, ptid); |
32178cab | 1331 | #else |
8e65ff28 AC |
1332 | internal_error (__FILE__, __LINE__, |
1333 | "generic_target_write_pc"); | |
32178cab MS |
1334 | #endif |
1335 | } | |
1336 | ||
1337 | void | |
39f77062 | 1338 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 1339 | { |
39f77062 | 1340 | ptid_t saved_inferior_ptid; |
32178cab | 1341 | |
39f77062 KB |
1342 | /* In case ptid != inferior_ptid. */ |
1343 | saved_inferior_ptid = inferior_ptid; | |
1344 | inferior_ptid = ptid; | |
32178cab | 1345 | |
39f77062 | 1346 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 1347 | |
39f77062 | 1348 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
1349 | } |
1350 | ||
1351 | void | |
1352 | write_pc (CORE_ADDR pc) | |
1353 | { | |
39f77062 | 1354 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
1355 | } |
1356 | ||
1357 | /* Cope with strage ways of getting to the stack and frame pointers */ | |
1358 | ||
32178cab MS |
1359 | CORE_ADDR |
1360 | generic_target_read_sp (void) | |
1361 | { | |
1362 | #ifdef SP_REGNUM | |
1363 | if (SP_REGNUM >= 0) | |
1364 | return read_register (SP_REGNUM); | |
1365 | #endif | |
8e65ff28 AC |
1366 | internal_error (__FILE__, __LINE__, |
1367 | "generic_target_read_sp"); | |
32178cab MS |
1368 | } |
1369 | ||
1370 | CORE_ADDR | |
1371 | read_sp (void) | |
1372 | { | |
1373 | return TARGET_READ_SP (); | |
1374 | } | |
1375 | ||
32178cab MS |
1376 | void |
1377 | generic_target_write_sp (CORE_ADDR val) | |
1378 | { | |
1379 | #ifdef SP_REGNUM | |
1380 | if (SP_REGNUM >= 0) | |
1381 | { | |
1382 | write_register (SP_REGNUM, val); | |
1383 | return; | |
1384 | } | |
1385 | #endif | |
8e65ff28 AC |
1386 | internal_error (__FILE__, __LINE__, |
1387 | "generic_target_write_sp"); | |
32178cab MS |
1388 | } |
1389 | ||
1390 | void | |
1391 | write_sp (CORE_ADDR val) | |
1392 | { | |
1393 | TARGET_WRITE_SP (val); | |
1394 | } | |
1395 | ||
32178cab MS |
1396 | CORE_ADDR |
1397 | generic_target_read_fp (void) | |
1398 | { | |
1399 | #ifdef FP_REGNUM | |
1400 | if (FP_REGNUM >= 0) | |
1401 | return read_register (FP_REGNUM); | |
1402 | #endif | |
8e65ff28 AC |
1403 | internal_error (__FILE__, __LINE__, |
1404 | "generic_target_read_fp"); | |
32178cab MS |
1405 | } |
1406 | ||
1407 | CORE_ADDR | |
1408 | read_fp (void) | |
1409 | { | |
1410 | return TARGET_READ_FP (); | |
1411 | } | |
1412 | ||
705152c5 MS |
1413 | /* ARGSUSED */ |
1414 | static void | |
1415 | reg_flush_command (char *command, int from_tty) | |
1416 | { | |
1417 | /* Force-flush the register cache. */ | |
1418 | registers_changed (); | |
1419 | if (from_tty) | |
1420 | printf_filtered ("Register cache flushed.\n"); | |
1421 | } | |
1422 | ||
32178cab MS |
1423 | static void |
1424 | build_regcache (void) | |
3fadccb3 AC |
1425 | { |
1426 | current_regcache = regcache_xmalloc (current_gdbarch); | |
2d28509a | 1427 | current_regcache->readonly_p = 0; |
524d7c18 | 1428 | deprecated_registers = deprecated_grub_regcache_for_registers (current_regcache); |
8262ee23 | 1429 | deprecated_register_valid = deprecated_grub_regcache_for_register_valid (current_regcache); |
3fadccb3 AC |
1430 | } |
1431 | ||
af030b9a AC |
1432 | static void |
1433 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
1434 | const unsigned char *buf, long len) | |
1435 | { | |
1436 | int i; | |
1437 | switch (endian) | |
1438 | { | |
1439 | case BFD_ENDIAN_BIG: | |
1440 | for (i = 0; i < len; i++) | |
1441 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1442 | break; | |
1443 | case BFD_ENDIAN_LITTLE: | |
1444 | for (i = len - 1; i >= 0; i--) | |
1445 | fprintf_unfiltered (file, "%02x", buf[i]); | |
1446 | break; | |
1447 | default: | |
1448 | internal_error (__FILE__, __LINE__, "Bad switch"); | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | enum regcache_dump_what | |
1453 | { | |
b59ff9d5 | 1454 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups |
af030b9a AC |
1455 | }; |
1456 | ||
1457 | static void | |
1458 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
1459 | enum regcache_dump_what what_to_dump) | |
1460 | { | |
1461 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
b59ff9d5 AC |
1462 | struct gdbarch *gdbarch = regcache->descr->gdbarch; |
1463 | struct reggroup *const *groups = reggroups (gdbarch); | |
af030b9a AC |
1464 | int regnum; |
1465 | int footnote_nr = 0; | |
1466 | int footnote_register_size = 0; | |
1467 | int footnote_register_offset = 0; | |
1468 | int footnote_register_type_name_null = 0; | |
1469 | long register_offset = 0; | |
1470 | unsigned char *buf = alloca (regcache->descr->max_register_size); | |
1471 | ||
1472 | #if 0 | |
1473 | fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p); | |
1474 | fprintf_unfiltered (file, "nr_raw_registers %d\n", | |
1475 | regcache->descr->nr_raw_registers); | |
1476 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1477 | regcache->descr->nr_cooked_registers); | |
1478 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1479 | regcache->descr->sizeof_raw_registers); | |
1480 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1481 | regcache->descr->sizeof_raw_register_valid_p); | |
1482 | fprintf_unfiltered (file, "max_register_size %ld\n", | |
1483 | regcache->descr->max_register_size); | |
1484 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); | |
1485 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1486 | #endif | |
1487 | ||
1488 | gdb_assert (regcache->descr->nr_cooked_registers | |
1489 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1490 | ||
1491 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1492 | { | |
1493 | /* Name. */ | |
1494 | if (regnum < 0) | |
1495 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1496 | else | |
1497 | { | |
1498 | const char *p = REGISTER_NAME (regnum); | |
1499 | if (p == NULL) | |
1500 | p = ""; | |
1501 | else if (p[0] == '\0') | |
1502 | p = "''"; | |
1503 | fprintf_unfiltered (file, " %-10s", p); | |
1504 | } | |
1505 | ||
1506 | /* Number. */ | |
1507 | if (regnum < 0) | |
1508 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1509 | else | |
1510 | fprintf_unfiltered (file, " %4d", regnum); | |
1511 | ||
1512 | /* Relative number. */ | |
1513 | if (regnum < 0) | |
1514 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1515 | else if (regnum < NUM_REGS) | |
1516 | fprintf_unfiltered (file, " %4d", regnum); | |
1517 | else | |
1518 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1519 | ||
1520 | /* Offset. */ | |
1521 | if (regnum < 0) | |
1522 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1523 | else | |
1524 | { | |
1525 | fprintf_unfiltered (file, " %6ld", | |
1526 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 1527 | if (register_offset != regcache->descr->register_offset[regnum] |
d3b22ed5 AC |
1528 | || register_offset != REGISTER_BYTE (regnum) |
1529 | || (regnum > 0 | |
1530 | && (regcache->descr->register_offset[regnum] | |
1531 | != (regcache->descr->register_offset[regnum - 1] | |
1532 | + regcache->descr->sizeof_register[regnum - 1]))) | |
1533 | ) | |
af030b9a AC |
1534 | { |
1535 | if (!footnote_register_offset) | |
1536 | footnote_register_offset = ++footnote_nr; | |
1537 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1538 | } | |
1539 | else | |
1540 | fprintf_unfiltered (file, " "); | |
1541 | register_offset = (regcache->descr->register_offset[regnum] | |
1542 | + regcache->descr->sizeof_register[regnum]); | |
1543 | } | |
1544 | ||
1545 | /* Size. */ | |
1546 | if (regnum < 0) | |
1547 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1548 | else | |
1549 | { | |
1550 | fprintf_unfiltered (file, " %5ld", | |
1551 | regcache->descr->sizeof_register[regnum]); | |
1552 | if ((regcache->descr->sizeof_register[regnum] | |
1553 | != REGISTER_RAW_SIZE (regnum)) | |
1554 | || (regcache->descr->sizeof_register[regnum] | |
1555 | != REGISTER_VIRTUAL_SIZE (regnum)) | |
1556 | || (regcache->descr->sizeof_register[regnum] | |
bb425013 AC |
1557 | != TYPE_LENGTH (register_type (regcache->descr->gdbarch, |
1558 | regnum))) | |
af030b9a AC |
1559 | ) |
1560 | { | |
1561 | if (!footnote_register_size) | |
1562 | footnote_register_size = ++footnote_nr; | |
1563 | fprintf_unfiltered (file, "*%d", footnote_register_size); | |
1564 | } | |
1565 | else | |
1566 | fprintf_unfiltered (file, " "); | |
1567 | } | |
1568 | ||
1569 | /* Type. */ | |
b59ff9d5 AC |
1570 | { |
1571 | const char *t; | |
1572 | if (regnum < 0) | |
1573 | t = "Type"; | |
1574 | else | |
1575 | { | |
1576 | static const char blt[] = "builtin_type"; | |
1577 | t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum)); | |
1578 | if (t == NULL) | |
1579 | { | |
1580 | char *n; | |
1581 | if (!footnote_register_type_name_null) | |
1582 | footnote_register_type_name_null = ++footnote_nr; | |
1583 | xasprintf (&n, "*%d", footnote_register_type_name_null); | |
1584 | make_cleanup (xfree, n); | |
1585 | t = n; | |
1586 | } | |
1587 | /* Chop a leading builtin_type. */ | |
1588 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1589 | t += strlen (blt); | |
1590 | } | |
1591 | fprintf_unfiltered (file, " %-15s", t); | |
1592 | } | |
1593 | ||
1594 | /* Leading space always present. */ | |
1595 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1596 | |
1597 | /* Value, raw. */ | |
1598 | if (what_to_dump == regcache_dump_raw) | |
1599 | { | |
1600 | if (regnum < 0) | |
1601 | fprintf_unfiltered (file, "Raw value"); | |
1602 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1603 | fprintf_unfiltered (file, "<cooked>"); | |
1604 | else if (!regcache_valid_p (regcache, regnum)) | |
1605 | fprintf_unfiltered (file, "<invalid>"); | |
1606 | else | |
1607 | { | |
1608 | regcache_raw_read (regcache, regnum, buf); | |
1609 | fprintf_unfiltered (file, "0x"); | |
1610 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1611 | REGISTER_RAW_SIZE (regnum)); | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /* Value, cooked. */ | |
1616 | if (what_to_dump == regcache_dump_cooked) | |
1617 | { | |
1618 | if (regnum < 0) | |
1619 | fprintf_unfiltered (file, "Cooked value"); | |
1620 | else | |
1621 | { | |
1622 | regcache_cooked_read (regcache, regnum, buf); | |
1623 | fprintf_unfiltered (file, "0x"); | |
1624 | dump_endian_bytes (file, TARGET_BYTE_ORDER, buf, | |
1625 | REGISTER_VIRTUAL_SIZE (regnum)); | |
1626 | } | |
1627 | } | |
1628 | ||
b59ff9d5 AC |
1629 | /* Group members. */ |
1630 | if (what_to_dump == regcache_dump_groups) | |
1631 | { | |
1632 | if (regnum < 0) | |
1633 | fprintf_unfiltered (file, "Groups"); | |
1634 | else | |
1635 | { | |
1636 | int i; | |
1637 | const char *sep = ""; | |
1638 | for (i = 0; groups[i] != NULL; i++) | |
1639 | { | |
1640 | if (gdbarch_register_reggroup_p (gdbarch, regnum, groups[i])) | |
1641 | { | |
1642 | fprintf_unfiltered (file, "%s%s", sep, reggroup_name (groups[i])); | |
1643 | sep = ","; | |
1644 | } | |
1645 | } | |
1646 | } | |
1647 | } | |
1648 | ||
af030b9a AC |
1649 | fprintf_unfiltered (file, "\n"); |
1650 | } | |
1651 | ||
1652 | if (footnote_register_size) | |
1653 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1654 | footnote_register_size); | |
1655 | if (footnote_register_offset) | |
1656 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1657 | footnote_register_offset); | |
1658 | if (footnote_register_type_name_null) | |
1659 | fprintf_unfiltered (file, | |
1660 | "*%d: Register type's name NULL.\n", | |
1661 | footnote_register_type_name_null); | |
1662 | do_cleanups (cleanups); | |
1663 | } | |
1664 | ||
1665 | static void | |
1666 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1667 | { | |
1668 | if (args == NULL) | |
1669 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1670 | else | |
1671 | { | |
1672 | struct ui_file *file = gdb_fopen (args, "w"); | |
1673 | if (file == NULL) | |
1674 | perror_with_name ("maintenance print architecture"); | |
1675 | regcache_dump (current_regcache, file, what_to_dump); | |
1676 | ui_file_delete (file); | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | static void | |
1681 | maintenance_print_registers (char *args, int from_tty) | |
1682 | { | |
1683 | regcache_print (args, regcache_dump_none); | |
1684 | } | |
1685 | ||
1686 | static void | |
1687 | maintenance_print_raw_registers (char *args, int from_tty) | |
1688 | { | |
1689 | regcache_print (args, regcache_dump_raw); | |
1690 | } | |
1691 | ||
1692 | static void | |
1693 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1694 | { | |
1695 | regcache_print (args, regcache_dump_cooked); | |
1696 | } | |
1697 | ||
b59ff9d5 AC |
1698 | static void |
1699 | maintenance_print_register_groups (char *args, int from_tty) | |
1700 | { | |
1701 | regcache_print (args, regcache_dump_groups); | |
1702 | } | |
1703 | ||
32178cab MS |
1704 | void |
1705 | _initialize_regcache (void) | |
1706 | { | |
3fadccb3 AC |
1707 | regcache_descr_handle = register_gdbarch_data (init_regcache_descr, |
1708 | xfree_regcache_descr); | |
1709 | REGISTER_GDBARCH_SWAP (current_regcache); | |
524d7c18 | 1710 | register_gdbarch_swap (&deprecated_registers, sizeof (deprecated_registers), NULL); |
8262ee23 | 1711 | register_gdbarch_swap (&deprecated_register_valid, sizeof (deprecated_register_valid), NULL); |
32178cab | 1712 | register_gdbarch_swap (NULL, 0, build_regcache); |
705152c5 MS |
1713 | |
1714 | add_com ("flushregs", class_maintenance, reg_flush_command, | |
1715 | "Force gdb to flush its register cache (maintainer command)"); | |
39f77062 KB |
1716 | |
1717 | /* Initialize the thread/process associated with the current set of | |
1718 | registers. For now, -1 is special, and means `no current process'. */ | |
1719 | registers_ptid = pid_to_ptid (-1); | |
af030b9a AC |
1720 | |
1721 | add_cmd ("registers", class_maintenance, | |
1722 | maintenance_print_registers, | |
1723 | "Print the internal register configuration.\ | |
1724 | Takes an optional file parameter.", | |
1725 | &maintenanceprintlist); | |
1726 | add_cmd ("raw-registers", class_maintenance, | |
1727 | maintenance_print_raw_registers, | |
1728 | "Print the internal register configuration including raw values.\ | |
1729 | Takes an optional file parameter.", | |
1730 | &maintenanceprintlist); | |
1731 | add_cmd ("cooked-registers", class_maintenance, | |
1732 | maintenance_print_cooked_registers, | |
1733 | "Print the internal register configuration including cooked values.\ | |
b59ff9d5 AC |
1734 | Takes an optional file parameter.", |
1735 | &maintenanceprintlist); | |
1736 | add_cmd ("register-groups", class_maintenance, | |
1737 | maintenance_print_register_groups, | |
1738 | "Print the internal register configuration including each register's group.\ | |
af030b9a AC |
1739 | Takes an optional file parameter.", |
1740 | &maintenanceprintlist); | |
1741 | ||
32178cab | 1742 | } |