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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 Free Software Foundation, Inc. |
32178cab MS |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
32178cab MS |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
32178cab MS |
19 | |
20 | #include "defs.h" | |
32178cab MS |
21 | #include "inferior.h" |
22 | #include "target.h" | |
23 | #include "gdbarch.h" | |
705152c5 | 24 | #include "gdbcmd.h" |
4e052eda | 25 | #include "regcache.h" |
b59ff9d5 | 26 | #include "reggroups.h" |
f4c5303c | 27 | #include "observer.h" |
c21236dc | 28 | #include "remote.h" |
d3eaaf66 | 29 | #include "valprint.h" |
0b309272 | 30 | #include "regset.h" |
32178cab MS |
31 | |
32 | /* | |
33 | * DATA STRUCTURE | |
34 | * | |
35 | * Here is the actual register cache. | |
36 | */ | |
37 | ||
3fadccb3 | 38 | /* Per-architecture object describing the layout of a register cache. |
0df8b418 | 39 | Computed once when the architecture is created. */ |
3fadccb3 AC |
40 | |
41 | struct gdbarch_data *regcache_descr_handle; | |
42 | ||
43 | struct regcache_descr | |
44 | { | |
45 | /* The architecture this descriptor belongs to. */ | |
46 | struct gdbarch *gdbarch; | |
47 | ||
bb1db049 AC |
48 | /* The raw register cache. Each raw (or hard) register is supplied |
49 | by the target interface. The raw cache should not contain | |
50 | redundant information - if the PC is constructed from two | |
d2f0b918 | 51 | registers then those registers and not the PC lives in the raw |
bb1db049 | 52 | cache. */ |
3fadccb3 AC |
53 | int nr_raw_registers; |
54 | long sizeof_raw_registers; | |
ee99023e | 55 | long sizeof_raw_register_status; |
3fadccb3 | 56 | |
d138e37a AC |
57 | /* The cooked register space. Each cooked register in the range |
58 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
59 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 60 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 61 | both raw registers and memory by the architecture methods |
02f60eae | 62 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 63 | int nr_cooked_registers; |
067df2e5 | 64 | long sizeof_cooked_registers; |
ee99023e | 65 | long sizeof_cooked_register_status; |
d138e37a | 66 | |
86d31898 | 67 | /* Offset and size (in 8 bit bytes), of each register in the |
d138e37a | 68 | register cache. All registers (including those in the range |
99e42fd8 PA |
69 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an |
70 | offset. */ | |
3fadccb3 | 71 | long *register_offset; |
3fadccb3 | 72 | long *sizeof_register; |
3fadccb3 | 73 | |
bb425013 AC |
74 | /* Cached table containing the type of each register. */ |
75 | struct type **register_type; | |
3fadccb3 AC |
76 | }; |
77 | ||
3fadccb3 AC |
78 | static void * |
79 | init_regcache_descr (struct gdbarch *gdbarch) | |
80 | { | |
81 | int i; | |
82 | struct regcache_descr *descr; | |
83 | gdb_assert (gdbarch != NULL); | |
84 | ||
bb425013 | 85 | /* Create an initial, zero filled, table. */ |
116f06ea | 86 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 87 | descr->gdbarch = gdbarch; |
3fadccb3 | 88 | |
d138e37a AC |
89 | /* Total size of the register space. The raw registers are mapped |
90 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 91 | either mapped onto raw-registers or memory. */ |
214e098a UW |
92 | descr->nr_cooked_registers = gdbarch_num_regs (gdbarch) |
93 | + gdbarch_num_pseudo_regs (gdbarch); | |
ee99023e PA |
94 | descr->sizeof_cooked_register_status |
95 | = gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
3fadccb3 | 96 | |
bb425013 | 97 | /* Fill in a table of register types. */ |
116f06ea | 98 | descr->register_type |
3e43a32a MS |
99 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, |
100 | struct type *); | |
bb425013 | 101 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 102 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 103 | |
bb1db049 AC |
104 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
105 | into the register cache. */ | |
214e098a | 106 | descr->nr_raw_registers = gdbarch_num_regs (gdbarch); |
ee99023e | 107 | descr->sizeof_raw_register_status = gdbarch_num_regs (gdbarch); |
bb1db049 | 108 | |
067df2e5 | 109 | /* Lay out the register cache. |
3fadccb3 | 110 | |
bb425013 AC |
111 | NOTE: cagney/2002-05-22: Only register_type() is used when |
112 | constructing the register cache. It is assumed that the | |
113 | register's raw size, virtual size and type length are all the | |
114 | same. */ | |
3fadccb3 AC |
115 | |
116 | { | |
117 | long offset = 0; | |
123f5f96 | 118 | |
116f06ea AC |
119 | descr->sizeof_register |
120 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
121 | descr->register_offset | |
122 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
99e42fd8 PA |
123 | for (i = 0; i < descr->nr_raw_registers; i++) |
124 | { | |
125 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); | |
126 | descr->register_offset[i] = offset; | |
127 | offset += descr->sizeof_register[i]; | |
128 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); | |
129 | } | |
130 | /* Set the real size of the raw register cache buffer. */ | |
131 | descr->sizeof_raw_registers = offset; | |
132 | ||
133 | for (; i < descr->nr_cooked_registers; i++) | |
3fadccb3 | 134 | { |
bb425013 | 135 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
136 | descr->register_offset[i] = offset; |
137 | offset += descr->sizeof_register[i]; | |
123a958e | 138 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 | 139 | } |
99e42fd8 | 140 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 141 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
142 | } |
143 | ||
3fadccb3 AC |
144 | return descr; |
145 | } | |
146 | ||
147 | static struct regcache_descr * | |
148 | regcache_descr (struct gdbarch *gdbarch) | |
149 | { | |
19ba03f4 SM |
150 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
151 | regcache_descr_handle); | |
3fadccb3 AC |
152 | } |
153 | ||
bb425013 AC |
154 | /* Utility functions returning useful register attributes stored in |
155 | the regcache descr. */ | |
156 | ||
157 | struct type * | |
158 | register_type (struct gdbarch *gdbarch, int regnum) | |
159 | { | |
160 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 161 | |
bb425013 AC |
162 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
163 | return descr->register_type[regnum]; | |
164 | } | |
165 | ||
0ed04cce AC |
166 | /* Utility functions returning useful register attributes stored in |
167 | the regcache descr. */ | |
168 | ||
08a617da AC |
169 | int |
170 | register_size (struct gdbarch *gdbarch, int regnum) | |
171 | { | |
172 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
173 | int size; | |
123f5f96 | 174 | |
f57d151a | 175 | gdb_assert (regnum >= 0 |
214e098a UW |
176 | && regnum < (gdbarch_num_regs (gdbarch) |
177 | + gdbarch_num_pseudo_regs (gdbarch))); | |
08a617da | 178 | size = descr->sizeof_register[regnum]; |
08a617da AC |
179 | return size; |
180 | } | |
181 | ||
8d689ee5 YQ |
182 | /* See common/common-regcache.h. */ |
183 | ||
184 | int | |
185 | regcache_register_size (const struct regcache *regcache, int n) | |
186 | { | |
187 | return register_size (get_regcache_arch (regcache), n); | |
188 | } | |
189 | ||
ef79d9a3 YQ |
190 | regcache::regcache (gdbarch *gdbarch, address_space *aspace_, |
191 | bool readonly_p_) | |
192 | : m_aspace (aspace_), m_readonly_p (readonly_p_) | |
3fadccb3 | 193 | { |
ef79d9a3 YQ |
194 | gdb_assert (gdbarch != NULL); |
195 | m_descr = regcache_descr (gdbarch); | |
4621115f | 196 | |
ef79d9a3 | 197 | if (m_readonly_p) |
4621115f | 198 | { |
ef79d9a3 YQ |
199 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers); |
200 | m_register_status = XCNEWVEC (signed char, | |
201 | m_descr->sizeof_cooked_register_status); | |
4621115f YQ |
202 | } |
203 | else | |
204 | { | |
ef79d9a3 YQ |
205 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers); |
206 | m_register_status = XCNEWVEC (signed char, | |
207 | m_descr->sizeof_raw_register_status); | |
4621115f | 208 | } |
ef79d9a3 YQ |
209 | m_ptid = minus_one_ptid; |
210 | } | |
4621115f | 211 | |
deb1fa3e YQ |
212 | static enum register_status |
213 | do_cooked_read (void *src, int regnum, gdb_byte *buf) | |
214 | { | |
215 | struct regcache *regcache = (struct regcache *) src; | |
216 | ||
217 | return regcache_cooked_read (regcache, regnum, buf); | |
218 | } | |
219 | ||
220 | regcache::regcache (readonly_t, const regcache &src) | |
221 | : regcache (src.arch (), src.aspace (), true) | |
222 | { | |
223 | gdb_assert (!src.m_readonly_p); | |
224 | save (do_cooked_read, (void *) &src); | |
225 | } | |
226 | ||
ef79d9a3 YQ |
227 | gdbarch * |
228 | regcache::arch () const | |
229 | { | |
230 | return m_descr->gdbarch; | |
231 | } | |
3fadccb3 | 232 | |
ddaaf0fb SM |
233 | /* See regcache.h. */ |
234 | ||
235 | ptid_t | |
236 | regcache_get_ptid (const struct regcache *regcache) | |
237 | { | |
ef79d9a3 | 238 | gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid)); |
ddaaf0fb | 239 | |
ef79d9a3 | 240 | return regcache->ptid (); |
ddaaf0fb SM |
241 | } |
242 | ||
99e42fd8 PA |
243 | struct regcache * |
244 | regcache_xmalloc (struct gdbarch *gdbarch, struct address_space *aspace) | |
245 | { | |
4621115f | 246 | return new regcache (gdbarch, aspace); |
99e42fd8 PA |
247 | } |
248 | ||
3fadccb3 AC |
249 | void |
250 | regcache_xfree (struct regcache *regcache) | |
251 | { | |
252 | if (regcache == NULL) | |
253 | return; | |
4621115f YQ |
254 | |
255 | delete regcache; | |
3fadccb3 AC |
256 | } |
257 | ||
b9362cc7 | 258 | static void |
36160dc4 AC |
259 | do_regcache_xfree (void *data) |
260 | { | |
19ba03f4 | 261 | regcache_xfree ((struct regcache *) data); |
36160dc4 AC |
262 | } |
263 | ||
264 | struct cleanup * | |
265 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
266 | { | |
267 | return make_cleanup (do_regcache_xfree, regcache); | |
268 | } | |
269 | ||
b94ade42 PL |
270 | /* Cleanup routines for invalidating a register. */ |
271 | ||
272 | struct register_to_invalidate | |
273 | { | |
274 | struct regcache *regcache; | |
275 | int regnum; | |
276 | }; | |
277 | ||
278 | static void | |
279 | do_regcache_invalidate (void *data) | |
280 | { | |
19ba03f4 | 281 | struct register_to_invalidate *reg = (struct register_to_invalidate *) data; |
b94ade42 PL |
282 | |
283 | regcache_invalidate (reg->regcache, reg->regnum); | |
284 | } | |
285 | ||
286 | static struct cleanup * | |
287 | make_cleanup_regcache_invalidate (struct regcache *regcache, int regnum) | |
288 | { | |
289 | struct register_to_invalidate* reg = XNEW (struct register_to_invalidate); | |
290 | ||
291 | reg->regcache = regcache; | |
292 | reg->regnum = regnum; | |
293 | return make_cleanup_dtor (do_regcache_invalidate, (void *) reg, xfree); | |
294 | } | |
295 | ||
41d35cb0 MK |
296 | /* Return REGCACHE's architecture. */ |
297 | ||
298 | struct gdbarch * | |
299 | get_regcache_arch (const struct regcache *regcache) | |
300 | { | |
ef79d9a3 | 301 | return regcache->arch (); |
41d35cb0 MK |
302 | } |
303 | ||
6c95b8df PA |
304 | struct address_space * |
305 | get_regcache_aspace (const struct regcache *regcache) | |
306 | { | |
ef79d9a3 | 307 | return regcache->aspace (); |
6c95b8df PA |
308 | } |
309 | ||
51b1fe4e AC |
310 | /* Return a pointer to register REGNUM's buffer cache. */ |
311 | ||
ef79d9a3 YQ |
312 | gdb_byte * |
313 | regcache::register_buffer (int regnum) const | |
51b1fe4e | 314 | { |
ef79d9a3 | 315 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
316 | } |
317 | ||
2d28509a | 318 | void |
ef79d9a3 YQ |
319 | regcache_save (struct regcache *regcache, |
320 | regcache_cooked_read_ftype *cooked_read, void *src) | |
2d28509a | 321 | { |
ef79d9a3 YQ |
322 | regcache->save (cooked_read, src); |
323 | } | |
324 | ||
325 | void | |
326 | regcache::save (regcache_cooked_read_ftype *cooked_read, | |
327 | void *src) | |
328 | { | |
329 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d522557 | 330 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 331 | int regnum; |
123f5f96 | 332 | |
2d28509a | 333 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 334 | end up trying to write the register values back out to the |
2d28509a | 335 | target. */ |
ef79d9a3 | 336 | gdb_assert (m_readonly_p); |
2d28509a | 337 | /* Clear the dest. */ |
ef79d9a3 YQ |
338 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
339 | memset (m_register_status, 0, m_descr->sizeof_cooked_register_status); | |
2d28509a | 340 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
341 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
342 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 343 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 344 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
345 | { |
346 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
347 | { | |
05d1431c | 348 | enum register_status status = cooked_read (src, regnum, buf); |
123f5f96 | 349 | |
05d1431c | 350 | if (status == REG_VALID) |
ef79d9a3 | 351 | memcpy (register_buffer (regnum), buf, |
05d1431c PA |
352 | register_size (gdbarch, regnum)); |
353 | else | |
5602984a | 354 | { |
05d1431c PA |
355 | gdb_assert (status != REG_UNKNOWN); |
356 | ||
ef79d9a3 | 357 | memset (register_buffer (regnum), 0, |
5602984a | 358 | register_size (gdbarch, regnum)); |
5602984a | 359 | } |
ef79d9a3 | 360 | m_register_status[regnum] = status; |
2d28509a AC |
361 | } |
362 | } | |
363 | } | |
364 | ||
ef79d9a3 YQ |
365 | void |
366 | regcache::restore (struct regcache *src) | |
2d28509a | 367 | { |
ef79d9a3 | 368 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 369 | int regnum; |
123f5f96 | 370 | |
5602984a AC |
371 | /* The dst had better not be read-only. If it is, the `restore' |
372 | doesn't make much sense. */ | |
ef79d9a3 YQ |
373 | gdb_assert (!m_readonly_p); |
374 | gdb_assert (src->m_readonly_p); | |
2d28509a | 375 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
376 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
377 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 378 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 379 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 380 | { |
5602984a | 381 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 382 | { |
ef79d9a3 YQ |
383 | if (src->m_register_status[regnum] == REG_VALID) |
384 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
385 | } |
386 | } | |
387 | } | |
388 | ||
3fadccb3 AC |
389 | void |
390 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
391 | { | |
3fadccb3 | 392 | gdb_assert (src != NULL && dst != NULL); |
ef79d9a3 | 393 | gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch); |
3fadccb3 | 394 | gdb_assert (src != dst); |
ef79d9a3 | 395 | gdb_assert (src->m_readonly_p || dst->m_readonly_p); |
6c95b8df | 396 | |
ef79d9a3 | 397 | if (!src->m_readonly_p) |
5602984a | 398 | regcache_save (dst, do_cooked_read, src); |
ef79d9a3 YQ |
399 | else if (!dst->m_readonly_p) |
400 | dst->restore (src); | |
2d28509a | 401 | else |
ef79d9a3 | 402 | dst->cpy_no_passthrough (src); |
3fadccb3 AC |
403 | } |
404 | ||
bd49952b JK |
405 | /* Copy/duplicate the contents of a register cache. Unlike regcache_cpy, |
406 | which is pass-through, this does not go through to the target. | |
407 | Only values values already in the cache are transferred. The SRC and DST | |
408 | buffers must not overlap. */ | |
409 | ||
ef79d9a3 YQ |
410 | void |
411 | regcache::cpy_no_passthrough (struct regcache *src) | |
3fadccb3 | 412 | { |
ef79d9a3 YQ |
413 | gdb_assert (src != NULL); |
414 | gdb_assert (src->m_descr->gdbarch == m_descr->gdbarch); | |
3fadccb3 | 415 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough |
ee99023e PA |
416 | move of data into a thread's regcache. Doing this would be silly |
417 | - it would mean that regcache->register_status would be | |
418 | completely invalid. */ | |
ef79d9a3 | 419 | gdb_assert (m_readonly_p && src->m_readonly_p); |
6c95b8df | 420 | |
ef79d9a3 YQ |
421 | memcpy (m_registers, src->m_registers, |
422 | m_descr->sizeof_cooked_registers); | |
423 | memcpy (m_register_status, src->m_register_status, | |
424 | m_descr->sizeof_cooked_register_status); | |
3fadccb3 AC |
425 | } |
426 | ||
427 | struct regcache * | |
428 | regcache_dup (struct regcache *src) | |
429 | { | |
deb1fa3e | 430 | return new regcache (regcache::readonly, *src); |
3fadccb3 AC |
431 | } |
432 | ||
39181896 | 433 | enum register_status |
ee99023e | 434 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
435 | { |
436 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
437 | return regcache->get_register_status (regnum); |
438 | } | |
439 | ||
440 | enum register_status | |
441 | regcache::get_register_status (int regnum) const | |
442 | { | |
6ed7ea50 | 443 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
444 | if (m_readonly_p) |
445 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
6ed7ea50 | 446 | else |
ef79d9a3 | 447 | gdb_assert (regnum < m_descr->nr_raw_registers); |
6ed7ea50 | 448 | |
ef79d9a3 | 449 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
450 | } |
451 | ||
9c5ea4d9 UW |
452 | void |
453 | regcache_invalidate (struct regcache *regcache, int regnum) | |
454 | { | |
455 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 456 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
457 | } |
458 | ||
ef79d9a3 YQ |
459 | void |
460 | regcache::invalidate (int regnum) | |
461 | { | |
462 | gdb_assert (regnum >= 0); | |
463 | gdb_assert (!m_readonly_p); | |
464 | gdb_assert (regnum < m_descr->nr_raw_registers); | |
465 | m_register_status[regnum] = REG_UNKNOWN; | |
466 | } | |
9c5ea4d9 | 467 | |
3fadccb3 | 468 | /* Global structure containing the current regcache. */ |
3fadccb3 | 469 | |
5ebd2499 | 470 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
471 | recording if the register values have been changed (eg. by the |
472 | user). Therefore all registers must be written back to the | |
473 | target when appropriate. */ | |
474 | ||
c2250ad1 | 475 | struct regcache_list |
594f7785 | 476 | { |
c2250ad1 UW |
477 | struct regcache *regcache; |
478 | struct regcache_list *next; | |
479 | }; | |
480 | ||
481 | static struct regcache_list *current_regcache; | |
482 | ||
483 | struct regcache * | |
e2d96639 YQ |
484 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
485 | struct address_space *aspace) | |
c2250ad1 UW |
486 | { |
487 | struct regcache_list *list; | |
488 | struct regcache *new_regcache; | |
594f7785 | 489 | |
c2250ad1 | 490 | for (list = current_regcache; list; list = list->next) |
ef79d9a3 | 491 | if (ptid_equal (list->regcache->ptid (), ptid) |
c2250ad1 UW |
492 | && get_regcache_arch (list->regcache) == gdbarch) |
493 | return list->regcache; | |
594f7785 | 494 | |
4621115f | 495 | new_regcache = new regcache (gdbarch, aspace, false); |
ef79d9a3 | 496 | new_regcache->set_ptid (ptid); |
e2d96639 | 497 | |
8d749320 | 498 | list = XNEW (struct regcache_list); |
e2d96639 YQ |
499 | list->regcache = new_regcache; |
500 | list->next = current_regcache; | |
501 | current_regcache = list; | |
502 | ||
503 | return new_regcache; | |
504 | } | |
505 | ||
506 | struct regcache * | |
507 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
508 | { | |
509 | struct address_space *aspace; | |
510 | ||
b78974c3 PA |
511 | /* For the benefit of "maint print registers" & co when debugging an |
512 | executable, allow dumping the regcache even when there is no | |
513 | thread selected (target_thread_address_space internal-errors if | |
514 | no address space is found). Note that normal user commands will | |
515 | fail higher up on the call stack due to no | |
516 | target_has_registers. */ | |
517 | aspace = (ptid_equal (null_ptid, ptid) | |
518 | ? NULL | |
519 | : target_thread_address_space (ptid)); | |
520 | ||
e2d96639 | 521 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
522 | } |
523 | ||
c2250ad1 UW |
524 | static ptid_t current_thread_ptid; |
525 | static struct gdbarch *current_thread_arch; | |
526 | ||
527 | struct regcache * | |
528 | get_thread_regcache (ptid_t ptid) | |
529 | { | |
530 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
531 | { | |
532 | current_thread_ptid = ptid; | |
533 | current_thread_arch = target_thread_architecture (ptid); | |
534 | } | |
535 | ||
536 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
537 | } | |
538 | ||
539 | struct regcache * | |
540 | get_current_regcache (void) | |
594f7785 UW |
541 | { |
542 | return get_thread_regcache (inferior_ptid); | |
543 | } | |
32178cab | 544 | |
361c8ade GB |
545 | /* See common/common-regcache.h. */ |
546 | ||
547 | struct regcache * | |
548 | get_thread_regcache_for_ptid (ptid_t ptid) | |
549 | { | |
550 | return get_thread_regcache (ptid); | |
551 | } | |
32178cab | 552 | |
f4c5303c OF |
553 | /* Observer for the target_changed event. */ |
554 | ||
2c0b251b | 555 | static void |
f4c5303c OF |
556 | regcache_observer_target_changed (struct target_ops *target) |
557 | { | |
558 | registers_changed (); | |
559 | } | |
560 | ||
5231c1fd PA |
561 | /* Update global variables old ptids to hold NEW_PTID if they were |
562 | holding OLD_PTID. */ | |
563 | static void | |
564 | regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
565 | { | |
c2250ad1 UW |
566 | struct regcache_list *list; |
567 | ||
568 | for (list = current_regcache; list; list = list->next) | |
ef79d9a3 YQ |
569 | if (ptid_equal (list->regcache->ptid (), old_ptid)) |
570 | list->regcache->set_ptid (new_ptid); | |
5231c1fd PA |
571 | } |
572 | ||
32178cab MS |
573 | /* Low level examining and depositing of registers. |
574 | ||
575 | The caller is responsible for making sure that the inferior is | |
576 | stopped before calling the fetching routines, or it will get | |
577 | garbage. (a change from GDB version 3, in which the caller got the | |
578 | value from the last stop). */ | |
579 | ||
580 | /* REGISTERS_CHANGED () | |
581 | ||
582 | Indicate that registers may have changed, so invalidate the cache. */ | |
583 | ||
584 | void | |
e66408ed | 585 | registers_changed_ptid (ptid_t ptid) |
32178cab | 586 | { |
e66408ed | 587 | struct regcache_list *list, **list_link; |
c2250ad1 | 588 | |
e66408ed PA |
589 | list = current_regcache; |
590 | list_link = ¤t_regcache; | |
591 | while (list) | |
c2250ad1 | 592 | { |
ef79d9a3 | 593 | if (ptid_match (list->regcache->ptid (), ptid)) |
e66408ed PA |
594 | { |
595 | struct regcache_list *dead = list; | |
596 | ||
597 | *list_link = list->next; | |
598 | regcache_xfree (list->regcache); | |
599 | list = *list_link; | |
600 | xfree (dead); | |
601 | continue; | |
602 | } | |
603 | ||
604 | list_link = &list->next; | |
605 | list = *list_link; | |
c2250ad1 | 606 | } |
32178cab | 607 | |
c34fd852 | 608 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
609 | { |
610 | current_thread_ptid = null_ptid; | |
611 | current_thread_arch = NULL; | |
612 | } | |
32178cab | 613 | |
c34fd852 | 614 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
615 | { |
616 | /* We just deleted the regcache of the current thread. Need to | |
617 | forget about any frames we have cached, too. */ | |
618 | reinit_frame_cache (); | |
619 | } | |
620 | } | |
c2250ad1 | 621 | |
041274d8 PA |
622 | void |
623 | registers_changed (void) | |
624 | { | |
625 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 626 | |
32178cab MS |
627 | /* Force cleanup of any alloca areas if using C alloca instead of |
628 | a builtin alloca. This particular call is used to clean up | |
629 | areas allocated by low level target code which may build up | |
630 | during lengthy interactions between gdb and the target before | |
631 | gdb gives control to the user (ie watchpoints). */ | |
632 | alloca (0); | |
32178cab MS |
633 | } |
634 | ||
8e368124 AH |
635 | void |
636 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 637 | { |
8e368124 | 638 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
639 | |
640 | regcache->raw_update (regnum); | |
641 | } | |
642 | ||
643 | void | |
644 | regcache::raw_update (int regnum) | |
645 | { | |
646 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
8e368124 | 647 | |
3fadccb3 AC |
648 | /* Make certain that the register cache is up-to-date with respect |
649 | to the current thread. This switching shouldn't be necessary | |
650 | only there is still only one target side register cache. Sigh! | |
651 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 652 | |
ef79d9a3 | 653 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 654 | { |
ef79d9a3 | 655 | target_fetch_registers (this, regnum); |
788c8b10 PA |
656 | |
657 | /* A number of targets can't access the whole set of raw | |
658 | registers (because the debug API provides no means to get at | |
659 | them). */ | |
ef79d9a3 YQ |
660 | if (m_register_status[regnum] == REG_UNKNOWN) |
661 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 662 | } |
8e368124 AH |
663 | } |
664 | ||
665 | enum register_status | |
666 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
667 | { |
668 | return regcache->raw_read (regnum, buf); | |
669 | } | |
670 | ||
671 | enum register_status | |
672 | regcache::raw_read (int regnum, gdb_byte *buf) | |
8e368124 AH |
673 | { |
674 | gdb_assert (buf != NULL); | |
ef79d9a3 | 675 | raw_update (regnum); |
05d1431c | 676 | |
ef79d9a3 YQ |
677 | if (m_register_status[regnum] != REG_VALID) |
678 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 679 | else |
ef79d9a3 YQ |
680 | memcpy (buf, register_buffer (regnum), |
681 | m_descr->sizeof_register[regnum]); | |
05d1431c | 682 | |
ef79d9a3 | 683 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
684 | } |
685 | ||
05d1431c | 686 | enum register_status |
28fc6740 | 687 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
688 | { |
689 | gdb_assert (regcache != NULL); | |
690 | return regcache->raw_read_signed (regnum, val); | |
691 | } | |
692 | ||
693 | enum register_status | |
694 | regcache::raw_read_signed (int regnum, LONGEST *val) | |
28fc6740 | 695 | { |
2d522557 | 696 | gdb_byte *buf; |
05d1431c | 697 | enum register_status status; |
123f5f96 | 698 | |
ef79d9a3 YQ |
699 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
700 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
701 | status = raw_read (regnum, buf); | |
05d1431c PA |
702 | if (status == REG_VALID) |
703 | *val = extract_signed_integer | |
ef79d9a3 YQ |
704 | (buf, m_descr->sizeof_register[regnum], |
705 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
706 | else |
707 | *val = 0; | |
708 | return status; | |
28fc6740 AC |
709 | } |
710 | ||
05d1431c | 711 | enum register_status |
28fc6740 AC |
712 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
713 | ULONGEST *val) | |
ef79d9a3 YQ |
714 | { |
715 | gdb_assert (regcache != NULL); | |
716 | return regcache->raw_read_unsigned (regnum, val); | |
717 | } | |
718 | ||
719 | ||
720 | enum register_status | |
721 | regcache::raw_read_unsigned (int regnum, ULONGEST *val) | |
28fc6740 | 722 | { |
2d522557 | 723 | gdb_byte *buf; |
05d1431c | 724 | enum register_status status; |
123f5f96 | 725 | |
ef79d9a3 YQ |
726 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
727 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
728 | status = raw_read (regnum, buf); | |
05d1431c PA |
729 | if (status == REG_VALID) |
730 | *val = extract_unsigned_integer | |
ef79d9a3 YQ |
731 | (buf, m_descr->sizeof_register[regnum], |
732 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
733 | else |
734 | *val = 0; | |
735 | return status; | |
28fc6740 AC |
736 | } |
737 | ||
c00dcbe9 MK |
738 | void |
739 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
740 | { |
741 | gdb_assert (regcache != NULL); | |
742 | regcache->raw_write_signed (regnum, val); | |
743 | } | |
744 | ||
745 | void | |
746 | regcache::raw_write_signed (int regnum, LONGEST val) | |
c00dcbe9 | 747 | { |
7c543f7b | 748 | gdb_byte *buf; |
123f5f96 | 749 | |
ef79d9a3 YQ |
750 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
751 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
752 | store_signed_integer (buf, m_descr->sizeof_register[regnum], | |
753 | gdbarch_byte_order (m_descr->gdbarch), val); | |
754 | raw_write (regnum, buf); | |
c00dcbe9 MK |
755 | } |
756 | ||
757 | void | |
758 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
759 | ULONGEST val) | |
ef79d9a3 YQ |
760 | { |
761 | gdb_assert (regcache != NULL); | |
762 | regcache->raw_write_unsigned (regnum, val); | |
763 | } | |
764 | ||
765 | void | |
766 | regcache::raw_write_unsigned (int regnum, ULONGEST val) | |
c00dcbe9 | 767 | { |
7c543f7b | 768 | gdb_byte *buf; |
123f5f96 | 769 | |
ef79d9a3 YQ |
770 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
771 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
772 | store_unsigned_integer (buf, m_descr->sizeof_register[regnum], | |
773 | gdbarch_byte_order (m_descr->gdbarch), val); | |
774 | raw_write (regnum, buf); | |
c00dcbe9 MK |
775 | } |
776 | ||
9fd15b2e YQ |
777 | LONGEST |
778 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
779 | { | |
780 | LONGEST value; | |
781 | enum register_status status; | |
782 | ||
783 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
784 | if (status == REG_UNAVAILABLE) | |
785 | throw_error (NOT_AVAILABLE_ERROR, | |
786 | _("Register %d is not available"), regnum); | |
787 | return value; | |
788 | } | |
789 | ||
05d1431c | 790 | enum register_status |
2d522557 | 791 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
792 | { |
793 | return regcache->cooked_read (regnum, buf); | |
794 | } | |
795 | ||
796 | enum register_status | |
797 | regcache::cooked_read (int regnum, gdb_byte *buf) | |
68365089 | 798 | { |
d138e37a | 799 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
800 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
801 | if (regnum < m_descr->nr_raw_registers) | |
802 | return raw_read (regnum, buf); | |
803 | else if (m_readonly_p | |
804 | && m_register_status[regnum] != REG_UNKNOWN) | |
05d1431c PA |
805 | { |
806 | /* Read-only register cache, perhaps the cooked value was | |
807 | cached? */ | |
ef79d9a3 YQ |
808 | if (m_register_status[regnum] == REG_VALID) |
809 | memcpy (buf, register_buffer (regnum), | |
810 | m_descr->sizeof_register[regnum]); | |
05d1431c | 811 | else |
ef79d9a3 | 812 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 813 | |
ef79d9a3 | 814 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 815 | } |
ef79d9a3 | 816 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
817 | { |
818 | struct value *mark, *computed; | |
819 | enum register_status result = REG_VALID; | |
820 | ||
821 | mark = value_mark (); | |
822 | ||
ef79d9a3 YQ |
823 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
824 | this, regnum); | |
3543a589 TT |
825 | if (value_entirely_available (computed)) |
826 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 827 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
828 | else |
829 | { | |
ef79d9a3 | 830 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
831 | result = REG_UNAVAILABLE; |
832 | } | |
833 | ||
834 | value_free_to_mark (mark); | |
835 | ||
836 | return result; | |
837 | } | |
d138e37a | 838 | else |
ef79d9a3 | 839 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 840 | regnum, buf); |
61a0eb5b AC |
841 | } |
842 | ||
3543a589 TT |
843 | struct value * |
844 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
845 | { |
846 | return regcache->cooked_read_value (regnum); | |
847 | } | |
848 | ||
849 | struct value * | |
850 | regcache::cooked_read_value (int regnum) | |
3543a589 TT |
851 | { |
852 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 853 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 854 | |
ef79d9a3 YQ |
855 | if (regnum < m_descr->nr_raw_registers |
856 | || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN) | |
857 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) | |
3543a589 TT |
858 | { |
859 | struct value *result; | |
860 | ||
ef79d9a3 | 861 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
862 | VALUE_LVAL (result) = lval_register; |
863 | VALUE_REGNUM (result) = regnum; | |
864 | ||
865 | /* It is more efficient in general to do this delegation in this | |
866 | direction than in the other one, even though the value-based | |
867 | API is preferred. */ | |
ef79d9a3 YQ |
868 | if (cooked_read (regnum, |
869 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
870 | mark_value_bytes_unavailable (result, 0, |
871 | TYPE_LENGTH (value_type (result))); | |
872 | ||
873 | return result; | |
874 | } | |
875 | else | |
ef79d9a3 YQ |
876 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
877 | this, regnum); | |
3543a589 TT |
878 | } |
879 | ||
05d1431c | 880 | enum register_status |
a378f419 AC |
881 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
882 | LONGEST *val) | |
ef79d9a3 YQ |
883 | { |
884 | gdb_assert (regcache != NULL); | |
885 | return regcache->cooked_read_signed (regnum, val); | |
886 | } | |
887 | ||
888 | enum register_status | |
889 | regcache::cooked_read_signed (int regnum, LONGEST *val) | |
a378f419 | 890 | { |
05d1431c | 891 | enum register_status status; |
2d522557 | 892 | gdb_byte *buf; |
123f5f96 | 893 | |
ef79d9a3 YQ |
894 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
895 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
896 | status = cooked_read (regnum, buf); | |
05d1431c PA |
897 | if (status == REG_VALID) |
898 | *val = extract_signed_integer | |
ef79d9a3 YQ |
899 | (buf, m_descr->sizeof_register[regnum], |
900 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
901 | else |
902 | *val = 0; | |
903 | return status; | |
a378f419 AC |
904 | } |
905 | ||
05d1431c | 906 | enum register_status |
a378f419 AC |
907 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
908 | ULONGEST *val) | |
ef79d9a3 YQ |
909 | { |
910 | gdb_assert (regcache != NULL); | |
911 | return regcache->cooked_read_unsigned (regnum, val); | |
912 | } | |
913 | ||
914 | enum register_status | |
915 | regcache::cooked_read_unsigned (int regnum, ULONGEST *val) | |
a378f419 | 916 | { |
05d1431c | 917 | enum register_status status; |
2d522557 | 918 | gdb_byte *buf; |
123f5f96 | 919 | |
ef79d9a3 YQ |
920 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
921 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
922 | status = cooked_read (regnum, buf); | |
05d1431c PA |
923 | if (status == REG_VALID) |
924 | *val = extract_unsigned_integer | |
ef79d9a3 YQ |
925 | (buf, m_descr->sizeof_register[regnum], |
926 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
927 | else |
928 | *val = 0; | |
929 | return status; | |
a378f419 AC |
930 | } |
931 | ||
a66a9c23 AC |
932 | void |
933 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
934 | LONGEST val) | |
ef79d9a3 YQ |
935 | { |
936 | gdb_assert (regcache != NULL); | |
937 | regcache->cooked_write_signed (regnum, val); | |
938 | } | |
939 | ||
940 | void | |
941 | regcache::cooked_write_signed (int regnum, LONGEST val) | |
a66a9c23 | 942 | { |
7c543f7b | 943 | gdb_byte *buf; |
123f5f96 | 944 | |
ef79d9a3 YQ |
945 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
946 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
947 | store_signed_integer (buf, m_descr->sizeof_register[regnum], | |
948 | gdbarch_byte_order (m_descr->gdbarch), val); | |
949 | cooked_write (regnum, buf); | |
a66a9c23 AC |
950 | } |
951 | ||
952 | void | |
953 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
954 | ULONGEST val) | |
ef79d9a3 YQ |
955 | { |
956 | gdb_assert (regcache != NULL); | |
957 | regcache->cooked_write_unsigned (regnum, val); | |
958 | } | |
959 | ||
960 | void | |
961 | regcache::cooked_write_unsigned (int regnum, ULONGEST val) | |
a66a9c23 | 962 | { |
7c543f7b | 963 | gdb_byte *buf; |
123f5f96 | 964 | |
ef79d9a3 YQ |
965 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
966 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
967 | store_unsigned_integer (buf, m_descr->sizeof_register[regnum], | |
968 | gdbarch_byte_order (m_descr->gdbarch), val); | |
969 | cooked_write (regnum, buf); | |
a66a9c23 AC |
970 | } |
971 | ||
20aa2c60 PA |
972 | /* See regcache.h. */ |
973 | ||
974 | void | |
975 | regcache_raw_set_cached_value (struct regcache *regcache, int regnum, | |
976 | const gdb_byte *buf) | |
977 | { | |
ef79d9a3 YQ |
978 | regcache->raw_set_cached_value (regnum, buf); |
979 | } | |
980 | ||
981 | void | |
982 | regcache::raw_set_cached_value (int regnum, const gdb_byte *buf) | |
983 | { | |
984 | memcpy (register_buffer (regnum), buf, | |
985 | m_descr->sizeof_register[regnum]); | |
986 | m_register_status[regnum] = REG_VALID; | |
20aa2c60 PA |
987 | } |
988 | ||
61a0eb5b | 989 | void |
2d522557 AC |
990 | regcache_raw_write (struct regcache *regcache, int regnum, |
991 | const gdb_byte *buf) | |
ef79d9a3 YQ |
992 | { |
993 | gdb_assert (regcache != NULL && buf != NULL); | |
994 | regcache->raw_write (regnum, buf); | |
995 | } | |
996 | ||
997 | void | |
998 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 999 | { |
3e00d44f | 1000 | struct cleanup *old_chain; |
594f7785 | 1001 | |
ef79d9a3 YQ |
1002 | gdb_assert (buf != NULL); |
1003 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1004 | gdb_assert (!m_readonly_p); | |
3fadccb3 | 1005 | |
3fadccb3 AC |
1006 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
1007 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 1008 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
1009 | return; |
1010 | ||
3fadccb3 | 1011 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 1012 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
1013 | if (get_register_status (regnum) == REG_VALID |
1014 | && (memcmp (register_buffer (regnum), buf, | |
1015 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
1016 | return; |
1017 | ||
ef79d9a3 YQ |
1018 | target_prepare_to_store (this); |
1019 | raw_set_cached_value (regnum, buf); | |
b94ade42 PL |
1020 | |
1021 | /* Register a cleanup function for invalidating the register after it is | |
1022 | written, in case of a failure. */ | |
ef79d9a3 | 1023 | old_chain = make_cleanup_regcache_invalidate (this, regnum); |
b94ade42 | 1024 | |
ef79d9a3 | 1025 | target_store_registers (this, regnum); |
594f7785 | 1026 | |
b94ade42 PL |
1027 | /* The target did not throw an error so we can discard invalidating the |
1028 | register and restore the cleanup chain to what it was. */ | |
3e00d44f | 1029 | discard_cleanups (old_chain); |
61a0eb5b AC |
1030 | } |
1031 | ||
68365089 | 1032 | void |
2d522557 AC |
1033 | regcache_cooked_write (struct regcache *regcache, int regnum, |
1034 | const gdb_byte *buf) | |
ef79d9a3 YQ |
1035 | { |
1036 | regcache->cooked_write (regnum, buf); | |
1037 | } | |
1038 | ||
1039 | void | |
1040 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 1041 | { |
d138e37a | 1042 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
1043 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
1044 | if (regnum < m_descr->nr_raw_registers) | |
1045 | raw_write (regnum, buf); | |
d138e37a | 1046 | else |
ef79d9a3 | 1047 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 1048 | regnum, buf); |
61a0eb5b AC |
1049 | } |
1050 | ||
06c0b04e AC |
1051 | /* Perform a partial register transfer using a read, modify, write |
1052 | operation. */ | |
1053 | ||
1054 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
1055 | void *buf); | |
1056 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
1057 | const void *buf); | |
1058 | ||
ef79d9a3 YQ |
1059 | enum register_status |
1060 | regcache::xfer_part (int regnum, int offset, int len, void *in, | |
1061 | const void *out, | |
1062 | enum register_status (*read) (struct regcache *regcache, | |
1063 | int regnum, | |
1064 | gdb_byte *buf), | |
1065 | void (*write) (struct regcache *regcache, int regnum, | |
1066 | const gdb_byte *buf)) | |
1067 | { | |
1068 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 1069 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 1070 | |
ef79d9a3 YQ |
1071 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
1072 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
1073 | /* Something to do? */ |
1074 | if (offset + len == 0) | |
05d1431c | 1075 | return REG_VALID; |
0df8b418 | 1076 | /* Read (when needed) ... */ |
06c0b04e AC |
1077 | if (in != NULL |
1078 | || offset > 0 | |
ef79d9a3 | 1079 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 1080 | { |
05d1431c PA |
1081 | enum register_status status; |
1082 | ||
06c0b04e | 1083 | gdb_assert (read != NULL); |
ef79d9a3 | 1084 | status = read (this, regnum, reg); |
05d1431c PA |
1085 | if (status != REG_VALID) |
1086 | return status; | |
06c0b04e | 1087 | } |
0df8b418 | 1088 | /* ... modify ... */ |
06c0b04e AC |
1089 | if (in != NULL) |
1090 | memcpy (in, reg + offset, len); | |
1091 | if (out != NULL) | |
1092 | memcpy (reg + offset, out, len); | |
1093 | /* ... write (when needed). */ | |
1094 | if (out != NULL) | |
1095 | { | |
1096 | gdb_assert (write != NULL); | |
ef79d9a3 | 1097 | write (this, regnum, reg); |
06c0b04e | 1098 | } |
05d1431c PA |
1099 | |
1100 | return REG_VALID; | |
06c0b04e AC |
1101 | } |
1102 | ||
05d1431c | 1103 | enum register_status |
06c0b04e | 1104 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 1105 | int offset, int len, gdb_byte *buf) |
06c0b04e | 1106 | { |
ef79d9a3 YQ |
1107 | return regcache->raw_read_part (regnum, offset, len, buf); |
1108 | } | |
123f5f96 | 1109 | |
ef79d9a3 YQ |
1110 | enum register_status |
1111 | regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1112 | { | |
1113 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1114 | return xfer_part (regnum, offset, len, buf, NULL, | |
1115 | regcache_raw_read, regcache_raw_write); | |
06c0b04e AC |
1116 | } |
1117 | ||
1118 | void | |
1119 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1120 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1121 | { |
ef79d9a3 YQ |
1122 | regcache->raw_write_part (regnum, offset, len, buf); |
1123 | } | |
123f5f96 | 1124 | |
ef79d9a3 YQ |
1125 | void |
1126 | regcache::raw_write_part (int regnum, int offset, int len, | |
1127 | const gdb_byte *buf) | |
1128 | { | |
1129 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1130 | xfer_part (regnum, offset, len, NULL, buf, regcache_raw_read, | |
1131 | regcache_raw_write); | |
06c0b04e AC |
1132 | } |
1133 | ||
05d1431c | 1134 | enum register_status |
06c0b04e | 1135 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 1136 | int offset, int len, gdb_byte *buf) |
06c0b04e | 1137 | { |
ef79d9a3 YQ |
1138 | return regcache->cooked_read_part (regnum, offset, len, buf); |
1139 | } | |
123f5f96 | 1140 | |
ef79d9a3 YQ |
1141 | |
1142 | enum register_status | |
1143 | regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1144 | { | |
1145 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1146 | return xfer_part (regnum, offset, len, buf, NULL, | |
1147 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e AC |
1148 | } |
1149 | ||
1150 | void | |
1151 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1152 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1153 | { |
ef79d9a3 YQ |
1154 | regcache->cooked_write_part (regnum, offset, len, buf); |
1155 | } | |
123f5f96 | 1156 | |
ef79d9a3 YQ |
1157 | void |
1158 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1159 | const gdb_byte *buf) | |
1160 | { | |
1161 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1162 | xfer_part (regnum, offset, len, NULL, buf, | |
1163 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e | 1164 | } |
32178cab | 1165 | |
a16d75cc | 1166 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1167 | |
1168 | void | |
6618125d | 1169 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
1170 | { |
1171 | gdb_assert (regcache != NULL); | |
1172 | regcache->raw_supply (regnum, buf); | |
1173 | } | |
1174 | ||
1175 | void | |
1176 | regcache::raw_supply (int regnum, const void *buf) | |
9a661b68 MK |
1177 | { |
1178 | void *regbuf; | |
1179 | size_t size; | |
1180 | ||
ef79d9a3 YQ |
1181 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
1182 | gdb_assert (!m_readonly_p); | |
9a661b68 | 1183 | |
ef79d9a3 YQ |
1184 | regbuf = register_buffer (regnum); |
1185 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1186 | |
1187 | if (buf) | |
ee99023e PA |
1188 | { |
1189 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1190 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1191 | } |
9a661b68 | 1192 | else |
ee99023e PA |
1193 | { |
1194 | /* This memset not strictly necessary, but better than garbage | |
1195 | in case the register value manages to escape somewhere (due | |
1196 | to a bug, no less). */ | |
1197 | memset (regbuf, 0, size); | |
ef79d9a3 | 1198 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1199 | } |
9a661b68 MK |
1200 | } |
1201 | ||
f81fdd35 AH |
1202 | /* Supply register REGNUM with zeroed value to REGCACHE. This is not the same |
1203 | as calling raw_supply with NULL (which will set the state to | |
1204 | unavailable). */ | |
1205 | ||
1206 | void | |
1207 | regcache::raw_supply_zeroed (int regnum) | |
1208 | { | |
1209 | void *regbuf; | |
1210 | size_t size; | |
1211 | ||
1212 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1213 | gdb_assert (!m_readonly_p); | |
1214 | ||
1215 | regbuf = register_buffer (regnum); | |
1216 | size = m_descr->sizeof_register[regnum]; | |
1217 | ||
1218 | memset (regbuf, 0, size); | |
1219 | m_register_status[regnum] = REG_VALID; | |
1220 | } | |
1221 | ||
9a661b68 MK |
1222 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ |
1223 | ||
1224 | void | |
6618125d | 1225 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1226 | { |
1227 | gdb_assert (regcache != NULL && buf != NULL); | |
1228 | regcache->raw_collect (regnum, buf); | |
1229 | } | |
1230 | ||
1231 | void | |
1232 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1233 | { |
1234 | const void *regbuf; | |
1235 | size_t size; | |
1236 | ||
ef79d9a3 YQ |
1237 | gdb_assert (buf != NULL); |
1238 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
9a661b68 | 1239 | |
ef79d9a3 YQ |
1240 | regbuf = register_buffer (regnum); |
1241 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1242 | memcpy (buf, regbuf, size); |
1243 | } | |
1244 | ||
0b309272 AA |
1245 | /* Transfer a single or all registers belonging to a certain register |
1246 | set to or from a buffer. This is the main worker function for | |
1247 | regcache_supply_regset and regcache_collect_regset. */ | |
1248 | ||
ef79d9a3 YQ |
1249 | void |
1250 | regcache::transfer_regset (const struct regset *regset, | |
1251 | struct regcache *out_regcache, | |
1252 | int regnum, const void *in_buf, | |
1253 | void *out_buf, size_t size) const | |
0b309272 AA |
1254 | { |
1255 | const struct regcache_map_entry *map; | |
1256 | int offs = 0, count; | |
1257 | ||
19ba03f4 SM |
1258 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1259 | (count = map->count) != 0; | |
1260 | map++) | |
0b309272 AA |
1261 | { |
1262 | int regno = map->regno; | |
1263 | int slot_size = map->size; | |
1264 | ||
1265 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1266 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1267 | |
1268 | if (regno == REGCACHE_MAP_SKIP | |
1269 | || (regnum != -1 | |
1270 | && (regnum < regno || regnum >= regno + count))) | |
1271 | offs += count * slot_size; | |
1272 | ||
1273 | else if (regnum == -1) | |
1274 | for (; count--; regno++, offs += slot_size) | |
1275 | { | |
1276 | if (offs + slot_size > size) | |
1277 | break; | |
1278 | ||
1279 | if (out_buf) | |
ef79d9a3 | 1280 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1281 | else |
ef79d9a3 YQ |
1282 | out_regcache->raw_supply (regno, in_buf |
1283 | ? (const gdb_byte *) in_buf + offs | |
1284 | : NULL); | |
0b309272 AA |
1285 | } |
1286 | else | |
1287 | { | |
1288 | /* Transfer a single register and return. */ | |
1289 | offs += (regnum - regno) * slot_size; | |
1290 | if (offs + slot_size > size) | |
1291 | return; | |
1292 | ||
1293 | if (out_buf) | |
ef79d9a3 | 1294 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1295 | else |
ef79d9a3 YQ |
1296 | out_regcache->raw_supply (regnum, in_buf |
1297 | ? (const gdb_byte *) in_buf + offs | |
1298 | : NULL); | |
0b309272 AA |
1299 | return; |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1305 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1306 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1307 | ||
1308 | void | |
1309 | regcache_supply_regset (const struct regset *regset, | |
1310 | struct regcache *regcache, | |
1311 | int regnum, const void *buf, size_t size) | |
1312 | { | |
ef79d9a3 YQ |
1313 | regcache->supply_regset (regset, regnum, buf, size); |
1314 | } | |
1315 | ||
1316 | void | |
1317 | regcache::supply_regset (const struct regset *regset, | |
1318 | int regnum, const void *buf, size_t size) | |
1319 | { | |
1320 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1321 | } |
1322 | ||
1323 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1324 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1325 | REGSET. */ | |
1326 | ||
1327 | void | |
1328 | regcache_collect_regset (const struct regset *regset, | |
1329 | const struct regcache *regcache, | |
1330 | int regnum, void *buf, size_t size) | |
1331 | { | |
ef79d9a3 YQ |
1332 | regcache->collect_regset (regset, regnum, buf, size); |
1333 | } | |
1334 | ||
1335 | void | |
1336 | regcache::collect_regset (const struct regset *regset, | |
1337 | int regnum, void *buf, size_t size) const | |
1338 | { | |
1339 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1340 | } |
1341 | ||
193cb69f | 1342 | |
515630c5 | 1343 | /* Special handling for register PC. */ |
32178cab MS |
1344 | |
1345 | CORE_ADDR | |
515630c5 | 1346 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1347 | { |
61a1198a UW |
1348 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1349 | ||
32178cab MS |
1350 | CORE_ADDR pc_val; |
1351 | ||
61a1198a UW |
1352 | if (gdbarch_read_pc_p (gdbarch)) |
1353 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1354 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1355 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1356 | { |
61a1198a | 1357 | ULONGEST raw_val; |
123f5f96 | 1358 | |
05d1431c PA |
1359 | if (regcache_cooked_read_unsigned (regcache, |
1360 | gdbarch_pc_regnum (gdbarch), | |
1361 | &raw_val) == REG_UNAVAILABLE) | |
1362 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1363 | ||
214e098a | 1364 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1365 | } |
1366 | else | |
515630c5 UW |
1367 | internal_error (__FILE__, __LINE__, |
1368 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1369 | return pc_val; |
1370 | } | |
1371 | ||
32178cab | 1372 | void |
515630c5 | 1373 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1374 | { |
61a1198a UW |
1375 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1376 | ||
61a1198a UW |
1377 | if (gdbarch_write_pc_p (gdbarch)) |
1378 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1379 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1380 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1381 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1382 | else |
1383 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1384 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1385 | |
1386 | /* Writing the PC (for instance, from "load") invalidates the | |
1387 | current frame. */ | |
1388 | reinit_frame_cache (); | |
32178cab MS |
1389 | } |
1390 | ||
ed771251 | 1391 | void |
ef79d9a3 | 1392 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1393 | { |
ef79d9a3 | 1394 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1395 | |
1396 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1397 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1398 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1399 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1400 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1401 | gdbarch_register_name (gdbarch, regno)); | |
1402 | else | |
1403 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1404 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1405 | { | |
1406 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1407 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1408 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1409 | |
1410 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1411 | for (int i = 0; i < size; i++) | |
1412 | { | |
1413 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1414 | } | |
1415 | if (size <= sizeof (LONGEST)) | |
1416 | { | |
1417 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1418 | ||
1419 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1420 | core_addr_to_string_nz (val), plongest (val)); | |
1421 | } | |
1422 | } | |
1423 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1424 | } | |
32178cab | 1425 | |
705152c5 MS |
1426 | static void |
1427 | reg_flush_command (char *command, int from_tty) | |
1428 | { | |
1429 | /* Force-flush the register cache. */ | |
1430 | registers_changed (); | |
1431 | if (from_tty) | |
a3f17187 | 1432 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1433 | } |
1434 | ||
ef79d9a3 YQ |
1435 | void |
1436 | regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump) | |
af030b9a AC |
1437 | { |
1438 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
ef79d9a3 | 1439 | struct gdbarch *gdbarch = m_descr->gdbarch; |
af030b9a AC |
1440 | int regnum; |
1441 | int footnote_nr = 0; | |
1442 | int footnote_register_size = 0; | |
1443 | int footnote_register_offset = 0; | |
1444 | int footnote_register_type_name_null = 0; | |
1445 | long register_offset = 0; | |
e362b510 | 1446 | gdb_byte buf[MAX_REGISTER_SIZE]; |
af030b9a AC |
1447 | |
1448 | #if 0 | |
af030b9a | 1449 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
ef79d9a3 | 1450 | m_descr->nr_raw_registers); |
af030b9a | 1451 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", |
ef79d9a3 | 1452 | m_descr->nr_cooked_registers); |
af030b9a | 1453 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", |
ef79d9a3 | 1454 | m_descr->sizeof_raw_registers); |
ee99023e | 1455 | fprintf_unfiltered (file, "sizeof_raw_register_status %ld\n", |
ef79d9a3 | 1456 | m_descr->sizeof_raw_register_status); |
f57d151a | 1457 | fprintf_unfiltered (file, "gdbarch_num_regs %d\n", |
214e098a | 1458 | gdbarch_num_regs (gdbarch)); |
f57d151a | 1459 | fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n", |
214e098a | 1460 | gdbarch_num_pseudo_regs (gdbarch)); |
af030b9a AC |
1461 | #endif |
1462 | ||
ef79d9a3 | 1463 | gdb_assert (m_descr->nr_cooked_registers |
214e098a UW |
1464 | == (gdbarch_num_regs (gdbarch) |
1465 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a | 1466 | |
ef79d9a3 | 1467 | for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++) |
af030b9a AC |
1468 | { |
1469 | /* Name. */ | |
1470 | if (regnum < 0) | |
1471 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1472 | else | |
1473 | { | |
214e098a | 1474 | const char *p = gdbarch_register_name (gdbarch, regnum); |
123f5f96 | 1475 | |
af030b9a AC |
1476 | if (p == NULL) |
1477 | p = ""; | |
1478 | else if (p[0] == '\0') | |
1479 | p = "''"; | |
1480 | fprintf_unfiltered (file, " %-10s", p); | |
1481 | } | |
1482 | ||
1483 | /* Number. */ | |
1484 | if (regnum < 0) | |
1485 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1486 | else | |
1487 | fprintf_unfiltered (file, " %4d", regnum); | |
1488 | ||
1489 | /* Relative number. */ | |
1490 | if (regnum < 0) | |
1491 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 1492 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
1493 | fprintf_unfiltered (file, " %4d", regnum); |
1494 | else | |
f57d151a | 1495 | fprintf_unfiltered (file, " %4d", |
214e098a | 1496 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
1497 | |
1498 | /* Offset. */ | |
1499 | if (regnum < 0) | |
1500 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1501 | else | |
1502 | { | |
1503 | fprintf_unfiltered (file, " %6ld", | |
ef79d9a3 YQ |
1504 | m_descr->register_offset[regnum]); |
1505 | if (register_offset != m_descr->register_offset[regnum] | |
d3b22ed5 | 1506 | || (regnum > 0 |
ef79d9a3 YQ |
1507 | && (m_descr->register_offset[regnum] |
1508 | != (m_descr->register_offset[regnum - 1] | |
1509 | + m_descr->sizeof_register[regnum - 1]))) | |
d3b22ed5 | 1510 | ) |
af030b9a AC |
1511 | { |
1512 | if (!footnote_register_offset) | |
1513 | footnote_register_offset = ++footnote_nr; | |
1514 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1515 | } | |
1516 | else | |
1517 | fprintf_unfiltered (file, " "); | |
ef79d9a3 YQ |
1518 | register_offset = (m_descr->register_offset[regnum] |
1519 | + m_descr->sizeof_register[regnum]); | |
af030b9a AC |
1520 | } |
1521 | ||
1522 | /* Size. */ | |
1523 | if (regnum < 0) | |
1524 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1525 | else | |
ef79d9a3 | 1526 | fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]); |
af030b9a AC |
1527 | |
1528 | /* Type. */ | |
b59ff9d5 AC |
1529 | { |
1530 | const char *t; | |
123f5f96 | 1531 | |
b59ff9d5 AC |
1532 | if (regnum < 0) |
1533 | t = "Type"; | |
1534 | else | |
1535 | { | |
1536 | static const char blt[] = "builtin_type"; | |
123f5f96 | 1537 | |
ef79d9a3 | 1538 | t = TYPE_NAME (register_type (arch (), regnum)); |
b59ff9d5 AC |
1539 | if (t == NULL) |
1540 | { | |
1541 | char *n; | |
123f5f96 | 1542 | |
b59ff9d5 AC |
1543 | if (!footnote_register_type_name_null) |
1544 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1545 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1546 | make_cleanup (xfree, n); |
1547 | t = n; | |
1548 | } | |
1549 | /* Chop a leading builtin_type. */ | |
61012eef | 1550 | if (startswith (t, blt)) |
b59ff9d5 AC |
1551 | t += strlen (blt); |
1552 | } | |
1553 | fprintf_unfiltered (file, " %-15s", t); | |
1554 | } | |
1555 | ||
1556 | /* Leading space always present. */ | |
1557 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1558 | |
1559 | /* Value, raw. */ | |
1560 | if (what_to_dump == regcache_dump_raw) | |
1561 | { | |
1562 | if (regnum < 0) | |
1563 | fprintf_unfiltered (file, "Raw value"); | |
ef79d9a3 | 1564 | else if (regnum >= m_descr->nr_raw_registers) |
af030b9a | 1565 | fprintf_unfiltered (file, "<cooked>"); |
ef79d9a3 | 1566 | else if (get_register_status (regnum) == REG_UNKNOWN) |
af030b9a | 1567 | fprintf_unfiltered (file, "<invalid>"); |
ef79d9a3 | 1568 | else if (get_register_status (regnum) == REG_UNAVAILABLE) |
ee99023e | 1569 | fprintf_unfiltered (file, "<unavailable>"); |
af030b9a AC |
1570 | else |
1571 | { | |
ef79d9a3 | 1572 | raw_read (regnum, buf); |
d3eaaf66 | 1573 | print_hex_chars (file, buf, |
ef79d9a3 | 1574 | m_descr->sizeof_register[regnum], |
d3eaaf66 | 1575 | gdbarch_byte_order (gdbarch)); |
af030b9a AC |
1576 | } |
1577 | } | |
1578 | ||
1579 | /* Value, cooked. */ | |
1580 | if (what_to_dump == regcache_dump_cooked) | |
1581 | { | |
1582 | if (regnum < 0) | |
1583 | fprintf_unfiltered (file, "Cooked value"); | |
1584 | else | |
1585 | { | |
05d1431c PA |
1586 | enum register_status status; |
1587 | ||
ef79d9a3 | 1588 | status = cooked_read (regnum, buf); |
05d1431c PA |
1589 | if (status == REG_UNKNOWN) |
1590 | fprintf_unfiltered (file, "<invalid>"); | |
1591 | else if (status == REG_UNAVAILABLE) | |
1592 | fprintf_unfiltered (file, "<unavailable>"); | |
1593 | else | |
d3eaaf66 | 1594 | print_hex_chars (file, buf, |
ef79d9a3 | 1595 | m_descr->sizeof_register[regnum], |
d3eaaf66 | 1596 | gdbarch_byte_order (gdbarch)); |
af030b9a AC |
1597 | } |
1598 | } | |
1599 | ||
b59ff9d5 AC |
1600 | /* Group members. */ |
1601 | if (what_to_dump == regcache_dump_groups) | |
1602 | { | |
1603 | if (regnum < 0) | |
1604 | fprintf_unfiltered (file, "Groups"); | |
1605 | else | |
1606 | { | |
b59ff9d5 | 1607 | const char *sep = ""; |
6c7d17ba | 1608 | struct reggroup *group; |
123f5f96 | 1609 | |
6c7d17ba AC |
1610 | for (group = reggroup_next (gdbarch, NULL); |
1611 | group != NULL; | |
1612 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1613 | { |
6c7d17ba | 1614 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1615 | { |
3e43a32a MS |
1616 | fprintf_unfiltered (file, |
1617 | "%s%s", sep, reggroup_name (group)); | |
b59ff9d5 AC |
1618 | sep = ","; |
1619 | } | |
1620 | } | |
1621 | } | |
1622 | } | |
1623 | ||
c21236dc PA |
1624 | /* Remote packet configuration. */ |
1625 | if (what_to_dump == regcache_dump_remote) | |
1626 | { | |
1627 | if (regnum < 0) | |
1628 | { | |
1629 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1630 | } | |
ef79d9a3 | 1631 | else if (regnum < m_descr->nr_raw_registers) |
c21236dc PA |
1632 | { |
1633 | int pnum, poffset; | |
1634 | ||
ef79d9a3 | 1635 | if (remote_register_number_and_offset (arch (), regnum, |
c21236dc PA |
1636 | &pnum, &poffset)) |
1637 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1638 | } | |
1639 | } | |
1640 | ||
af030b9a AC |
1641 | fprintf_unfiltered (file, "\n"); |
1642 | } | |
1643 | ||
1644 | if (footnote_register_size) | |
1645 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1646 | footnote_register_size); | |
1647 | if (footnote_register_offset) | |
1648 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1649 | footnote_register_offset); | |
1650 | if (footnote_register_type_name_null) | |
1651 | fprintf_unfiltered (file, | |
1652 | "*%d: Register type's name NULL.\n", | |
1653 | footnote_register_type_name_null); | |
1654 | do_cleanups (cleanups); | |
1655 | } | |
1656 | ||
1657 | static void | |
1658 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1659 | { | |
1660 | if (args == NULL) | |
ef79d9a3 | 1661 | get_current_regcache ()->dump (gdb_stdout, what_to_dump); |
af030b9a AC |
1662 | else |
1663 | { | |
d7e74731 | 1664 | stdio_file file; |
123f5f96 | 1665 | |
d7e74731 | 1666 | if (!file.open (args, "w")) |
e2e0b3e5 | 1667 | perror_with_name (_("maintenance print architecture")); |
ef79d9a3 | 1668 | get_current_regcache ()->dump (&file, what_to_dump); |
af030b9a AC |
1669 | } |
1670 | } | |
1671 | ||
1672 | static void | |
1673 | maintenance_print_registers (char *args, int from_tty) | |
1674 | { | |
1675 | regcache_print (args, regcache_dump_none); | |
1676 | } | |
1677 | ||
1678 | static void | |
1679 | maintenance_print_raw_registers (char *args, int from_tty) | |
1680 | { | |
1681 | regcache_print (args, regcache_dump_raw); | |
1682 | } | |
1683 | ||
1684 | static void | |
1685 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1686 | { | |
1687 | regcache_print (args, regcache_dump_cooked); | |
1688 | } | |
1689 | ||
b59ff9d5 AC |
1690 | static void |
1691 | maintenance_print_register_groups (char *args, int from_tty) | |
1692 | { | |
1693 | regcache_print (args, regcache_dump_groups); | |
1694 | } | |
1695 | ||
c21236dc PA |
1696 | static void |
1697 | maintenance_print_remote_registers (char *args, int from_tty) | |
1698 | { | |
1699 | regcache_print (args, regcache_dump_remote); | |
1700 | } | |
1701 | ||
8248946c YQ |
1702 | #if GDB_SELF_TEST |
1703 | #include "selftest.h" | |
1704 | ||
1705 | namespace selftests { | |
1706 | ||
1707 | /* Return the number of elements in current_regcache. */ | |
1708 | ||
1709 | static size_t | |
1710 | current_regcache_size () | |
1711 | { | |
1712 | size_t i = 0; | |
1713 | for (auto list = current_regcache; list; list = list->next) | |
1714 | i++; | |
1715 | ||
1716 | return i; | |
1717 | } | |
1718 | ||
1719 | static void | |
1720 | current_regcache_test (void) | |
1721 | { | |
1722 | /* It is empty at the start. */ | |
1723 | SELF_CHECK (current_regcache_size () == 0); | |
1724 | ||
1725 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1726 | ||
1727 | /* Get regcache from ptid1, a new regcache is added to | |
1728 | current_regcache. */ | |
1729 | regcache *regcache = get_thread_arch_aspace_regcache (ptid1, | |
1730 | target_gdbarch (), | |
1731 | NULL); | |
1732 | ||
1733 | SELF_CHECK (regcache != NULL); | |
1734 | SELF_CHECK (regcache->ptid () == ptid1); | |
1735 | SELF_CHECK (current_regcache_size () == 1); | |
1736 | ||
1737 | /* Get regcache from ptid2, a new regcache is added to | |
1738 | current_regcache. */ | |
1739 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1740 | target_gdbarch (), | |
1741 | NULL); | |
1742 | SELF_CHECK (regcache != NULL); | |
1743 | SELF_CHECK (regcache->ptid () == ptid2); | |
1744 | SELF_CHECK (current_regcache_size () == 2); | |
1745 | ||
1746 | /* Get regcache from ptid3, a new regcache is added to | |
1747 | current_regcache. */ | |
1748 | regcache = get_thread_arch_aspace_regcache (ptid3, | |
1749 | target_gdbarch (), | |
1750 | NULL); | |
1751 | SELF_CHECK (regcache != NULL); | |
1752 | SELF_CHECK (regcache->ptid () == ptid3); | |
1753 | SELF_CHECK (current_regcache_size () == 3); | |
1754 | ||
1755 | /* Get regcache from ptid2 again, nothing is added to | |
1756 | current_regcache. */ | |
1757 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1758 | target_gdbarch (), | |
1759 | NULL); | |
1760 | SELF_CHECK (regcache != NULL); | |
1761 | SELF_CHECK (regcache->ptid () == ptid2); | |
1762 | SELF_CHECK (current_regcache_size () == 3); | |
1763 | ||
1764 | /* Mark ptid2 is changed, so regcache of ptid2 should be removed from | |
1765 | current_regcache. */ | |
1766 | registers_changed_ptid (ptid2); | |
1767 | SELF_CHECK (current_regcache_size () == 2); | |
1768 | } | |
1769 | ||
1770 | } // namespace selftests | |
1771 | #endif /* GDB_SELF_TEST */ | |
1772 | ||
b9362cc7 AC |
1773 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1774 | ||
32178cab MS |
1775 | void |
1776 | _initialize_regcache (void) | |
1777 | { | |
3e43a32a MS |
1778 | regcache_descr_handle |
1779 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1780 | |
f4c5303c | 1781 | observer_attach_target_changed (regcache_observer_target_changed); |
5231c1fd | 1782 | observer_attach_thread_ptid_changed (regcache_thread_ptid_changed); |
f4c5303c | 1783 | |
705152c5 | 1784 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1785 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1786 | |
3e43a32a MS |
1787 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
1788 | _("Print the internal register configuration.\n" | |
1789 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1790 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
1791 | maintenance_print_raw_registers, |
1792 | _("Print the internal register configuration " | |
1793 | "including raw values.\n" | |
1794 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1795 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
1796 | maintenance_print_cooked_registers, |
1797 | _("Print the internal register configuration " | |
1798 | "including cooked values.\n" | |
1799 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1800 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
1801 | maintenance_print_register_groups, |
1802 | _("Print the internal register configuration " | |
1803 | "including each register's group.\n" | |
1804 | "Takes an optional file parameter."), | |
af030b9a | 1805 | &maintenanceprintlist); |
c21236dc PA |
1806 | add_cmd ("remote-registers", class_maintenance, |
1807 | maintenance_print_remote_registers, _("\ | |
1808 | Print the internal register configuration including each register's\n\ | |
1809 | remote register number and buffer offset in the g/G packets.\n\ | |
1810 | Takes an optional file parameter."), | |
1811 | &maintenanceprintlist); | |
8248946c YQ |
1812 | #if GDB_SELF_TEST |
1813 | register_self_test (selftests::current_regcache_test); | |
1814 | #endif | |
32178cab | 1815 | } |