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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 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 | 21 | #include "inferior.h" |
00431a78 | 22 | #include "gdbthread.h" |
32178cab | 23 | #include "target.h" |
c180496d | 24 | #include "test-target.h" |
236ef034 | 25 | #include "scoped-mock-context.h" |
32178cab | 26 | #include "gdbarch.h" |
705152c5 | 27 | #include "gdbcmd.h" |
4e052eda | 28 | #include "regcache.h" |
b59ff9d5 | 29 | #include "reggroups.h" |
76727919 | 30 | #include "observable.h" |
0b309272 | 31 | #include "regset.h" |
888bdb2b | 32 | #include <unordered_map> |
32178cab MS |
33 | |
34 | /* | |
35 | * DATA STRUCTURE | |
36 | * | |
37 | * Here is the actual register cache. | |
38 | */ | |
39 | ||
3fadccb3 | 40 | /* Per-architecture object describing the layout of a register cache. |
0df8b418 | 41 | Computed once when the architecture is created. */ |
3fadccb3 AC |
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 | ||
bb1db049 AC |
50 | /* The raw register cache. Each raw (or hard) register is supplied |
51 | by the target interface. The raw cache should not contain | |
52 | redundant information - if the PC is constructed from two | |
d2f0b918 | 53 | registers then those registers and not the PC lives in the raw |
bb1db049 | 54 | cache. */ |
3fadccb3 | 55 | long sizeof_raw_registers; |
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; |
d138e37a | 65 | |
86d31898 | 66 | /* Offset and size (in 8 bit bytes), of each register in the |
d138e37a | 67 | register cache. All registers (including those in the range |
99e42fd8 PA |
68 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an |
69 | offset. */ | |
3fadccb3 | 70 | long *register_offset; |
3fadccb3 | 71 | long *sizeof_register; |
3fadccb3 | 72 | |
bb425013 AC |
73 | /* Cached table containing the type of each register. */ |
74 | struct type **register_type; | |
3fadccb3 AC |
75 | }; |
76 | ||
3fadccb3 AC |
77 | static void * |
78 | init_regcache_descr (struct gdbarch *gdbarch) | |
79 | { | |
80 | int i; | |
81 | struct regcache_descr *descr; | |
82 | gdb_assert (gdbarch != NULL); | |
83 | ||
bb425013 | 84 | /* Create an initial, zero filled, table. */ |
116f06ea | 85 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 86 | descr->gdbarch = gdbarch; |
3fadccb3 | 87 | |
d138e37a AC |
88 | /* Total size of the register space. The raw registers are mapped |
89 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 90 | either mapped onto raw-registers or memory. */ |
f6efe3f8 | 91 | descr->nr_cooked_registers = gdbarch_num_cooked_regs (gdbarch); |
3fadccb3 | 92 | |
bb425013 | 93 | /* Fill in a table of register types. */ |
116f06ea | 94 | descr->register_type |
3e43a32a MS |
95 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, |
96 | struct type *); | |
bb425013 | 97 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 98 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 99 | |
bb1db049 AC |
100 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
101 | into the register cache. */ | |
bb1db049 | 102 | |
067df2e5 | 103 | /* Lay out the register cache. |
3fadccb3 | 104 | |
78134374 | 105 | NOTE: cagney/2002-05-22: Only register_type () is used when |
bb425013 AC |
106 | constructing the register cache. It is assumed that the |
107 | register's raw size, virtual size and type length are all the | |
108 | same. */ | |
3fadccb3 AC |
109 | |
110 | { | |
111 | long offset = 0; | |
123f5f96 | 112 | |
116f06ea AC |
113 | descr->sizeof_register |
114 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
115 | descr->register_offset | |
116 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
d999647b | 117 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
99e42fd8 PA |
118 | { |
119 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); | |
120 | descr->register_offset[i] = offset; | |
121 | offset += descr->sizeof_register[i]; | |
99e42fd8 PA |
122 | } |
123 | /* Set the real size of the raw register cache buffer. */ | |
124 | descr->sizeof_raw_registers = offset; | |
125 | ||
126 | for (; i < descr->nr_cooked_registers; i++) | |
3fadccb3 | 127 | { |
bb425013 | 128 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
129 | descr->register_offset[i] = offset; |
130 | offset += descr->sizeof_register[i]; | |
3fadccb3 | 131 | } |
99e42fd8 | 132 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 133 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
134 | } |
135 | ||
3fadccb3 AC |
136 | return descr; |
137 | } | |
138 | ||
139 | static struct regcache_descr * | |
140 | regcache_descr (struct gdbarch *gdbarch) | |
141 | { | |
19ba03f4 SM |
142 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
143 | regcache_descr_handle); | |
3fadccb3 AC |
144 | } |
145 | ||
bb425013 AC |
146 | /* Utility functions returning useful register attributes stored in |
147 | the regcache descr. */ | |
148 | ||
149 | struct type * | |
150 | register_type (struct gdbarch *gdbarch, int regnum) | |
151 | { | |
152 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 153 | |
bb425013 AC |
154 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
155 | return descr->register_type[regnum]; | |
156 | } | |
157 | ||
0ed04cce AC |
158 | /* Utility functions returning useful register attributes stored in |
159 | the regcache descr. */ | |
160 | ||
08a617da AC |
161 | int |
162 | register_size (struct gdbarch *gdbarch, int regnum) | |
163 | { | |
164 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
165 | int size; | |
123f5f96 | 166 | |
f6efe3f8 | 167 | gdb_assert (regnum >= 0 && regnum < gdbarch_num_cooked_regs (gdbarch)); |
08a617da | 168 | size = descr->sizeof_register[regnum]; |
08a617da AC |
169 | return size; |
170 | } | |
171 | ||
268a13a5 | 172 | /* See gdbsupport/common-regcache.h. */ |
8d689ee5 YQ |
173 | |
174 | int | |
175 | regcache_register_size (const struct regcache *regcache, int n) | |
176 | { | |
ac7936df | 177 | return register_size (regcache->arch (), n); |
8d689ee5 YQ |
178 | } |
179 | ||
31716595 YQ |
180 | reg_buffer::reg_buffer (gdbarch *gdbarch, bool has_pseudo) |
181 | : m_has_pseudo (has_pseudo) | |
3fadccb3 | 182 | { |
ef79d9a3 YQ |
183 | gdb_assert (gdbarch != NULL); |
184 | m_descr = regcache_descr (gdbarch); | |
4621115f | 185 | |
31716595 | 186 | if (has_pseudo) |
4621115f | 187 | { |
835dcf92 SM |
188 | m_registers.reset (new gdb_byte[m_descr->sizeof_cooked_registers] ()); |
189 | m_register_status.reset | |
190 | (new register_status[m_descr->nr_cooked_registers] ()); | |
4621115f YQ |
191 | } |
192 | else | |
193 | { | |
835dcf92 SM |
194 | m_registers.reset (new gdb_byte[m_descr->sizeof_raw_registers] ()); |
195 | m_register_status.reset | |
196 | (new register_status[gdbarch_num_regs (gdbarch)] ()); | |
4621115f | 197 | } |
31716595 YQ |
198 | } |
199 | ||
5b6d1e4f PA |
200 | regcache::regcache (process_stratum_target *target, gdbarch *gdbarch, |
201 | const address_space *aspace_) | |
796bb026 YQ |
202 | /* The register buffers. A read/write register cache can only hold |
203 | [0 .. gdbarch_num_regs). */ | |
5b6d1e4f | 204 | : detached_regcache (gdbarch, false), m_aspace (aspace_), m_target (target) |
31716595 | 205 | { |
ef79d9a3 YQ |
206 | m_ptid = minus_one_ptid; |
207 | } | |
4621115f | 208 | |
302abd6e SM |
209 | readonly_detached_regcache::readonly_detached_regcache (regcache &src) |
210 | : readonly_detached_regcache (src.arch (), | |
211 | [&src] (int regnum, gdb_byte *buf) | |
212 | { | |
213 | return src.cooked_read (regnum, buf); | |
214 | }) | |
daf6667d YQ |
215 | { |
216 | } | |
217 | ||
ef79d9a3 | 218 | gdbarch * |
31716595 | 219 | reg_buffer::arch () const |
ef79d9a3 YQ |
220 | { |
221 | return m_descr->gdbarch; | |
222 | } | |
3fadccb3 | 223 | |
51b1fe4e AC |
224 | /* Return a pointer to register REGNUM's buffer cache. */ |
225 | ||
ef79d9a3 | 226 | gdb_byte * |
31716595 | 227 | reg_buffer::register_buffer (int regnum) const |
51b1fe4e | 228 | { |
835dcf92 | 229 | return m_registers.get () + m_descr->register_offset[regnum]; |
51b1fe4e AC |
230 | } |
231 | ||
ef79d9a3 | 232 | void |
302abd6e | 233 | reg_buffer::save (register_read_ftype cooked_read) |
ef79d9a3 YQ |
234 | { |
235 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 236 | int regnum; |
123f5f96 | 237 | |
daf6667d YQ |
238 | /* It should have pseudo registers. */ |
239 | gdb_assert (m_has_pseudo); | |
2d28509a | 240 | /* Clear the dest. */ |
835dcf92 SM |
241 | memset (m_registers.get (), 0, m_descr->sizeof_cooked_registers); |
242 | memset (m_register_status.get (), REG_UNKNOWN, m_descr->nr_cooked_registers); | |
2d28509a | 243 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
244 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
245 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 246 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 247 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
248 | { |
249 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
250 | { | |
50d6adef | 251 | gdb_byte *dst_buf = register_buffer (regnum); |
302abd6e | 252 | enum register_status status = cooked_read (regnum, dst_buf); |
123f5f96 | 253 | |
50d6adef AH |
254 | gdb_assert (status != REG_UNKNOWN); |
255 | ||
256 | if (status != REG_VALID) | |
257 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 258 | |
ef79d9a3 | 259 | m_register_status[regnum] = status; |
2d28509a AC |
260 | } |
261 | } | |
262 | } | |
263 | ||
ef79d9a3 | 264 | void |
daf6667d | 265 | regcache::restore (readonly_detached_regcache *src) |
2d28509a | 266 | { |
ef79d9a3 | 267 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 268 | int regnum; |
123f5f96 | 269 | |
fc5b8736 | 270 | gdb_assert (src != NULL); |
daf6667d | 271 | gdb_assert (src->m_has_pseudo); |
fc5b8736 YQ |
272 | |
273 | gdb_assert (gdbarch == src->arch ()); | |
274 | ||
2d28509a | 275 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
276 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
277 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 278 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 279 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 280 | { |
5602984a | 281 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 282 | { |
ef79d9a3 YQ |
283 | if (src->m_register_status[regnum] == REG_VALID) |
284 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
285 | } |
286 | } | |
287 | } | |
288 | ||
268a13a5 | 289 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 290 | |
ef79d9a3 | 291 | enum register_status |
c8ec2f33 | 292 | reg_buffer::get_register_status (int regnum) const |
ef79d9a3 | 293 | { |
c8ec2f33 | 294 | assert_regnum (regnum); |
6ed7ea50 | 295 | |
aac0d564 | 296 | return m_register_status[regnum]; |
3fadccb3 AC |
297 | } |
298 | ||
ef79d9a3 | 299 | void |
9c861883 | 300 | reg_buffer::invalidate (int regnum) |
ef79d9a3 | 301 | { |
4e888c28 | 302 | assert_regnum (regnum); |
ef79d9a3 YQ |
303 | m_register_status[regnum] = REG_UNKNOWN; |
304 | } | |
9c5ea4d9 | 305 | |
4e888c28 | 306 | void |
31716595 | 307 | reg_buffer::assert_regnum (int regnum) const |
4e888c28 | 308 | { |
31716595 YQ |
309 | gdb_assert (regnum >= 0); |
310 | if (m_has_pseudo) | |
311 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
312 | else | |
313 | gdb_assert (regnum < gdbarch_num_regs (arch ())); | |
4e888c28 YQ |
314 | } |
315 | ||
888bdb2b SM |
316 | /* Type to map a ptid to a list of regcaches (one thread may have multiple |
317 | regcaches, associated to different gdbarches). */ | |
318 | ||
319 | using ptid_regcache_map | |
320 | = std::unordered_multimap<ptid_t, regcache_up, hash_ptid>; | |
321 | ||
322 | /* Type to map a target to a ptid_regcache_map, holding the regcaches for the | |
323 | threads defined by that target. */ | |
324 | ||
325 | using target_ptid_regcache_map | |
326 | = std::unordered_map<process_stratum_target *, ptid_regcache_map>; | |
327 | ||
328 | /* Global structure containing the existing regcaches. */ | |
3fadccb3 | 329 | |
5ebd2499 | 330 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
331 | recording if the register values have been changed (eg. by the |
332 | user). Therefore all registers must be written back to the | |
333 | target when appropriate. */ | |
888bdb2b | 334 | static target_ptid_regcache_map regcaches; |
c2250ad1 UW |
335 | |
336 | struct regcache * | |
5b6d1e4f | 337 | get_thread_arch_aspace_regcache (process_stratum_target *target, |
888bdb2b | 338 | ptid_t ptid, gdbarch *arch, |
e2d96639 | 339 | struct address_space *aspace) |
c2250ad1 | 340 | { |
5b6d1e4f PA |
341 | gdb_assert (target != nullptr); |
342 | ||
888bdb2b SM |
343 | /* Find the ptid -> regcache map for this target. */ |
344 | auto &ptid_regc_map = regcaches[target]; | |
594f7785 | 345 | |
888bdb2b SM |
346 | /* Check first if a regcache for this arch already exists. */ |
347 | auto range = ptid_regc_map.equal_range (ptid); | |
348 | for (auto it = range.first; it != range.second; ++it) | |
349 | { | |
350 | if (it->second->arch () == arch) | |
351 | return it->second.get (); | |
352 | } | |
594f7785 | 353 | |
888bdb2b SM |
354 | /* It does not exist, create it. */ |
355 | regcache *new_regcache = new regcache (target, arch, aspace); | |
ef79d9a3 | 356 | new_regcache->set_ptid (ptid); |
38f8aa06 TV |
357 | /* Work around a problem with g++ 4.8 (PR96537): Call the regcache_up |
358 | constructor explictly instead of implicitly. */ | |
359 | ptid_regc_map.insert (std::make_pair (ptid, regcache_up (new_regcache))); | |
e2d96639 | 360 | |
e2d96639 YQ |
361 | return new_regcache; |
362 | } | |
363 | ||
364 | struct regcache * | |
5b6d1e4f PA |
365 | get_thread_arch_regcache (process_stratum_target *target, ptid_t ptid, |
366 | struct gdbarch *gdbarch) | |
e2d96639 | 367 | { |
5b6d1e4f PA |
368 | scoped_restore_current_inferior restore_current_inferior; |
369 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
ed4227b7 | 370 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 371 | |
5b6d1e4f | 372 | return get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace); |
594f7785 UW |
373 | } |
374 | ||
5b6d1e4f | 375 | static process_stratum_target *current_thread_target; |
c2250ad1 UW |
376 | static ptid_t current_thread_ptid; |
377 | static struct gdbarch *current_thread_arch; | |
378 | ||
379 | struct regcache * | |
5b6d1e4f | 380 | get_thread_regcache (process_stratum_target *target, ptid_t ptid) |
c2250ad1 | 381 | { |
5b6d1e4f PA |
382 | if (!current_thread_arch |
383 | || target != current_thread_target | |
384 | || current_thread_ptid != ptid) | |
c2250ad1 | 385 | { |
5b6d1e4f PA |
386 | gdb_assert (ptid != null_ptid); |
387 | ||
c2250ad1 | 388 | current_thread_ptid = ptid; |
5b6d1e4f PA |
389 | current_thread_target = target; |
390 | ||
391 | scoped_restore_current_inferior restore_current_inferior; | |
392 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
c2250ad1 UW |
393 | current_thread_arch = target_thread_architecture (ptid); |
394 | } | |
395 | ||
5b6d1e4f | 396 | return get_thread_arch_regcache (target, ptid, current_thread_arch); |
c2250ad1 UW |
397 | } |
398 | ||
00431a78 PA |
399 | /* See regcache.h. */ |
400 | ||
401 | struct regcache * | |
402 | get_thread_regcache (thread_info *thread) | |
403 | { | |
5b6d1e4f PA |
404 | return get_thread_regcache (thread->inf->process_target (), |
405 | thread->ptid); | |
00431a78 PA |
406 | } |
407 | ||
c2250ad1 UW |
408 | struct regcache * |
409 | get_current_regcache (void) | |
594f7785 | 410 | { |
00431a78 | 411 | return get_thread_regcache (inferior_thread ()); |
594f7785 | 412 | } |
32178cab | 413 | |
268a13a5 | 414 | /* See gdbsupport/common-regcache.h. */ |
361c8ade GB |
415 | |
416 | struct regcache * | |
417 | get_thread_regcache_for_ptid (ptid_t ptid) | |
418 | { | |
5b6d1e4f PA |
419 | /* This function doesn't take a process_stratum_target parameter |
420 | because it's a gdbsupport/ routine implemented by both gdb and | |
421 | gdbserver. It always refers to a ptid of the current target. */ | |
422 | process_stratum_target *proc_target = current_inferior ()->process_target (); | |
423 | return get_thread_regcache (proc_target, ptid); | |
361c8ade | 424 | } |
32178cab | 425 | |
f4c5303c OF |
426 | /* Observer for the target_changed event. */ |
427 | ||
2c0b251b | 428 | static void |
f4c5303c OF |
429 | regcache_observer_target_changed (struct target_ops *target) |
430 | { | |
431 | registers_changed (); | |
432 | } | |
433 | ||
159ed7d9 SM |
434 | /* Update regcaches related to OLD_PTID to now use NEW_PTID. */ |
435 | static void | |
b161a60d SM |
436 | regcache_thread_ptid_changed (process_stratum_target *target, |
437 | ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 438 | { |
888bdb2b SM |
439 | auto ptid_regc_map_it = regcaches.find (target); |
440 | ||
441 | if (ptid_regc_map_it == regcaches.end ()) | |
442 | return; | |
443 | ||
444 | auto &ptid_regc_map = ptid_regc_map_it->second; | |
445 | auto range = ptid_regc_map.equal_range (old_ptid); | |
446 | for (auto it = range.first; it != range.second;) | |
94bb8dfe | 447 | { |
888bdb2b SM |
448 | regcache_up rc = std::move (it->second); |
449 | rc->set_ptid (new_ptid); | |
450 | ||
451 | /* Remove old before inserting new, to avoid rehashing, | |
452 | which would invalidate iterators. */ | |
453 | it = ptid_regc_map.erase (it); | |
454 | ptid_regc_map.insert (std::make_pair (new_ptid, std::move (rc))); | |
94bb8dfe | 455 | } |
5231c1fd PA |
456 | } |
457 | ||
32178cab MS |
458 | /* Low level examining and depositing of registers. |
459 | ||
460 | The caller is responsible for making sure that the inferior is | |
461 | stopped before calling the fetching routines, or it will get | |
462 | garbage. (a change from GDB version 3, in which the caller got the | |
463 | value from the last stop). */ | |
464 | ||
465 | /* REGISTERS_CHANGED () | |
466 | ||
467 | Indicate that registers may have changed, so invalidate the cache. */ | |
468 | ||
469 | void | |
5b6d1e4f | 470 | registers_changed_ptid (process_stratum_target *target, ptid_t ptid) |
32178cab | 471 | { |
888bdb2b SM |
472 | if (target == nullptr) |
473 | { | |
474 | /* Since there can be ptid clashes between targets, it's not valid to | |
475 | pass a ptid without saying to which target it belongs. */ | |
476 | gdb_assert (ptid == minus_one_ptid); | |
477 | ||
478 | /* Delete all the regcaches of all targets. */ | |
479 | regcaches.clear (); | |
480 | } | |
481 | else if (ptid != minus_one_ptid) | |
c2250ad1 | 482 | { |
888bdb2b SM |
483 | /* Non-NULL target and non-minus_one_ptid, delete all regcaches belonging |
484 | to this (TARGET, PTID). */ | |
485 | auto ptid_regc_map_it = regcaches.find (target); | |
486 | if (ptid_regc_map_it != regcaches.end ()) | |
e66408ed | 487 | { |
888bdb2b SM |
488 | auto &ptid_regc_map = ptid_regc_map_it->second; |
489 | ptid_regc_map.erase (ptid); | |
e66408ed | 490 | } |
888bdb2b SM |
491 | } |
492 | else | |
493 | { | |
494 | /* Non-NULL target and minus_one_ptid, delete all regcaches | |
495 | associated to this target. */ | |
496 | regcaches.erase (target); | |
c2250ad1 | 497 | } |
32178cab | 498 | |
5b6d1e4f PA |
499 | if ((target == nullptr || current_thread_target == target) |
500 | && current_thread_ptid.matches (ptid)) | |
041274d8 | 501 | { |
5b6d1e4f | 502 | current_thread_target = NULL; |
041274d8 PA |
503 | current_thread_ptid = null_ptid; |
504 | current_thread_arch = NULL; | |
505 | } | |
32178cab | 506 | |
5b6d1e4f PA |
507 | if ((target == nullptr || current_inferior ()->process_target () == target) |
508 | && inferior_ptid.matches (ptid)) | |
041274d8 PA |
509 | { |
510 | /* We just deleted the regcache of the current thread. Need to | |
511 | forget about any frames we have cached, too. */ | |
512 | reinit_frame_cache (); | |
513 | } | |
514 | } | |
c2250ad1 | 515 | |
00431a78 PA |
516 | /* See regcache.h. */ |
517 | ||
518 | void | |
519 | registers_changed_thread (thread_info *thread) | |
520 | { | |
5b6d1e4f | 521 | registers_changed_ptid (thread->inf->process_target (), thread->ptid); |
00431a78 PA |
522 | } |
523 | ||
041274d8 PA |
524 | void |
525 | registers_changed (void) | |
526 | { | |
5b6d1e4f | 527 | registers_changed_ptid (nullptr, minus_one_ptid); |
32178cab MS |
528 | } |
529 | ||
ef79d9a3 YQ |
530 | void |
531 | regcache::raw_update (int regnum) | |
532 | { | |
4e888c28 | 533 | assert_regnum (regnum); |
8e368124 | 534 | |
3fadccb3 AC |
535 | /* Make certain that the register cache is up-to-date with respect |
536 | to the current thread. This switching shouldn't be necessary | |
537 | only there is still only one target side register cache. Sigh! | |
538 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 539 | |
796bb026 | 540 | if (get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 541 | { |
ef79d9a3 | 542 | target_fetch_registers (this, regnum); |
788c8b10 PA |
543 | |
544 | /* A number of targets can't access the whole set of raw | |
545 | registers (because the debug API provides no means to get at | |
546 | them). */ | |
ef79d9a3 YQ |
547 | if (m_register_status[regnum] == REG_UNKNOWN) |
548 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 549 | } |
8e368124 AH |
550 | } |
551 | ||
ef79d9a3 | 552 | enum register_status |
849d0ba8 | 553 | readable_regcache::raw_read (int regnum, gdb_byte *buf) |
8e368124 AH |
554 | { |
555 | gdb_assert (buf != NULL); | |
ef79d9a3 | 556 | raw_update (regnum); |
05d1431c | 557 | |
ef79d9a3 YQ |
558 | if (m_register_status[regnum] != REG_VALID) |
559 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 560 | else |
ef79d9a3 YQ |
561 | memcpy (buf, register_buffer (regnum), |
562 | m_descr->sizeof_register[regnum]); | |
05d1431c | 563 | |
aac0d564 | 564 | return m_register_status[regnum]; |
61a0eb5b AC |
565 | } |
566 | ||
05d1431c | 567 | enum register_status |
28fc6740 | 568 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
569 | { |
570 | gdb_assert (regcache != NULL); | |
6f98355c | 571 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
572 | } |
573 | ||
6f98355c | 574 | template<typename T, typename> |
ef79d9a3 | 575 | enum register_status |
849d0ba8 | 576 | readable_regcache::raw_read (int regnum, T *val) |
28fc6740 | 577 | { |
2d522557 | 578 | gdb_byte *buf; |
05d1431c | 579 | enum register_status status; |
123f5f96 | 580 | |
4e888c28 | 581 | assert_regnum (regnum); |
ef79d9a3 YQ |
582 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
583 | status = raw_read (regnum, buf); | |
05d1431c | 584 | if (status == REG_VALID) |
6f98355c YQ |
585 | *val = extract_integer<T> (buf, |
586 | m_descr->sizeof_register[regnum], | |
587 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
588 | else |
589 | *val = 0; | |
590 | return status; | |
28fc6740 AC |
591 | } |
592 | ||
05d1431c | 593 | enum register_status |
28fc6740 AC |
594 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
595 | ULONGEST *val) | |
ef79d9a3 YQ |
596 | { |
597 | gdb_assert (regcache != NULL); | |
6f98355c | 598 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
599 | } |
600 | ||
c00dcbe9 MK |
601 | void |
602 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
603 | { |
604 | gdb_assert (regcache != NULL); | |
6f98355c | 605 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
606 | } |
607 | ||
6f98355c | 608 | template<typename T, typename> |
ef79d9a3 | 609 | void |
6f98355c | 610 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 611 | { |
7c543f7b | 612 | gdb_byte *buf; |
123f5f96 | 613 | |
4e888c28 | 614 | assert_regnum (regnum); |
ef79d9a3 | 615 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
6f98355c YQ |
616 | store_integer (buf, m_descr->sizeof_register[regnum], |
617 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 618 | raw_write (regnum, buf); |
c00dcbe9 MK |
619 | } |
620 | ||
621 | void | |
622 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
623 | ULONGEST val) | |
ef79d9a3 YQ |
624 | { |
625 | gdb_assert (regcache != NULL); | |
6f98355c | 626 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
627 | } |
628 | ||
9fd15b2e YQ |
629 | LONGEST |
630 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
631 | { | |
632 | LONGEST value; | |
633 | enum register_status status; | |
634 | ||
635 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
636 | if (status == REG_UNAVAILABLE) | |
637 | throw_error (NOT_AVAILABLE_ERROR, | |
638 | _("Register %d is not available"), regnum); | |
639 | return value; | |
640 | } | |
641 | ||
ef79d9a3 | 642 | enum register_status |
849d0ba8 | 643 | readable_regcache::cooked_read (int regnum, gdb_byte *buf) |
68365089 | 644 | { |
d138e37a | 645 | gdb_assert (regnum >= 0); |
ef79d9a3 | 646 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 647 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 648 | return raw_read (regnum, buf); |
849d0ba8 | 649 | else if (m_has_pseudo |
ef79d9a3 | 650 | && m_register_status[regnum] != REG_UNKNOWN) |
05d1431c | 651 | { |
ef79d9a3 YQ |
652 | if (m_register_status[regnum] == REG_VALID) |
653 | memcpy (buf, register_buffer (regnum), | |
654 | m_descr->sizeof_register[regnum]); | |
05d1431c | 655 | else |
ef79d9a3 | 656 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 657 | |
aac0d564 | 658 | return m_register_status[regnum]; |
05d1431c | 659 | } |
ef79d9a3 | 660 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
661 | { |
662 | struct value *mark, *computed; | |
663 | enum register_status result = REG_VALID; | |
664 | ||
665 | mark = value_mark (); | |
666 | ||
ef79d9a3 YQ |
667 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
668 | this, regnum); | |
3543a589 TT |
669 | if (value_entirely_available (computed)) |
670 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 671 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
672 | else |
673 | { | |
ef79d9a3 | 674 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
675 | result = REG_UNAVAILABLE; |
676 | } | |
677 | ||
678 | value_free_to_mark (mark); | |
679 | ||
680 | return result; | |
681 | } | |
d138e37a | 682 | else |
ef79d9a3 | 683 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 684 | regnum, buf); |
61a0eb5b AC |
685 | } |
686 | ||
ef79d9a3 | 687 | struct value * |
849d0ba8 | 688 | readable_regcache::cooked_read_value (int regnum) |
3543a589 TT |
689 | { |
690 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 691 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 692 | |
d999647b | 693 | if (regnum < num_raw_registers () |
849d0ba8 | 694 | || (m_has_pseudo && m_register_status[regnum] != REG_UNKNOWN) |
ef79d9a3 | 695 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
696 | { |
697 | struct value *result; | |
698 | ||
ef79d9a3 | 699 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
700 | VALUE_LVAL (result) = lval_register; |
701 | VALUE_REGNUM (result) = regnum; | |
702 | ||
703 | /* It is more efficient in general to do this delegation in this | |
704 | direction than in the other one, even though the value-based | |
705 | API is preferred. */ | |
ef79d9a3 YQ |
706 | if (cooked_read (regnum, |
707 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
708 | mark_value_bytes_unavailable (result, 0, |
709 | TYPE_LENGTH (value_type (result))); | |
710 | ||
711 | return result; | |
712 | } | |
713 | else | |
ef79d9a3 YQ |
714 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
715 | this, regnum); | |
3543a589 TT |
716 | } |
717 | ||
05d1431c | 718 | enum register_status |
a378f419 AC |
719 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
720 | LONGEST *val) | |
ef79d9a3 YQ |
721 | { |
722 | gdb_assert (regcache != NULL); | |
6f98355c | 723 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
724 | } |
725 | ||
6f98355c | 726 | template<typename T, typename> |
ef79d9a3 | 727 | enum register_status |
849d0ba8 | 728 | readable_regcache::cooked_read (int regnum, T *val) |
a378f419 | 729 | { |
05d1431c | 730 | enum register_status status; |
2d522557 | 731 | gdb_byte *buf; |
123f5f96 | 732 | |
ef79d9a3 YQ |
733 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
734 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
735 | status = cooked_read (regnum, buf); | |
05d1431c | 736 | if (status == REG_VALID) |
6f98355c YQ |
737 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
738 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
739 | else |
740 | *val = 0; | |
741 | return status; | |
a378f419 AC |
742 | } |
743 | ||
05d1431c | 744 | enum register_status |
a378f419 AC |
745 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
746 | ULONGEST *val) | |
ef79d9a3 YQ |
747 | { |
748 | gdb_assert (regcache != NULL); | |
6f98355c | 749 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
750 | } |
751 | ||
a66a9c23 AC |
752 | void |
753 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
754 | LONGEST val) | |
ef79d9a3 YQ |
755 | { |
756 | gdb_assert (regcache != NULL); | |
6f98355c | 757 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
758 | } |
759 | ||
6f98355c | 760 | template<typename T, typename> |
ef79d9a3 | 761 | void |
6f98355c | 762 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 763 | { |
7c543f7b | 764 | gdb_byte *buf; |
123f5f96 | 765 | |
ef79d9a3 YQ |
766 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
767 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
768 | store_integer (buf, m_descr->sizeof_register[regnum], |
769 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 770 | cooked_write (regnum, buf); |
a66a9c23 AC |
771 | } |
772 | ||
773 | void | |
774 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
775 | ULONGEST val) | |
ef79d9a3 YQ |
776 | { |
777 | gdb_assert (regcache != NULL); | |
6f98355c | 778 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
779 | } |
780 | ||
ef79d9a3 YQ |
781 | void |
782 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 783 | { |
594f7785 | 784 | |
ef79d9a3 | 785 | gdb_assert (buf != NULL); |
4e888c28 | 786 | assert_regnum (regnum); |
3fadccb3 | 787 | |
3fadccb3 AC |
788 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
789 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 790 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
791 | return; |
792 | ||
3fadccb3 | 793 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 794 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
795 | if (get_register_status (regnum) == REG_VALID |
796 | && (memcmp (register_buffer (regnum), buf, | |
797 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
798 | return; |
799 | ||
ef79d9a3 | 800 | target_prepare_to_store (this); |
c8ec2f33 | 801 | raw_supply (regnum, buf); |
b94ade42 | 802 | |
b292235f TT |
803 | /* Invalidate the register after it is written, in case of a |
804 | failure. */ | |
311dc83a TT |
805 | auto invalidator |
806 | = make_scope_exit ([&] { this->invalidate (regnum); }); | |
b94ade42 | 807 | |
ef79d9a3 | 808 | target_store_registers (this, regnum); |
594f7785 | 809 | |
b292235f TT |
810 | /* The target did not throw an error so we can discard invalidating |
811 | the register. */ | |
812 | invalidator.release (); | |
61a0eb5b AC |
813 | } |
814 | ||
ef79d9a3 YQ |
815 | void |
816 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 817 | { |
d138e37a | 818 | gdb_assert (regnum >= 0); |
ef79d9a3 | 819 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 820 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 821 | raw_write (regnum, buf); |
d138e37a | 822 | else |
ef79d9a3 | 823 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 824 | regnum, buf); |
61a0eb5b AC |
825 | } |
826 | ||
33bab475 | 827 | /* See regcache.h. */ |
06c0b04e | 828 | |
ef79d9a3 | 829 | enum register_status |
33bab475 AH |
830 | readable_regcache::read_part (int regnum, int offset, int len, |
831 | gdb_byte *out, bool is_raw) | |
849d0ba8 | 832 | { |
33bab475 AH |
833 | int reg_size = register_size (arch (), regnum); |
834 | ||
835 | gdb_assert (out != NULL); | |
8e7767e3 AH |
836 | gdb_assert (offset >= 0 && offset <= reg_size); |
837 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
838 | |
839 | if (offset == 0 && len == 0) | |
840 | { | |
841 | /* Nothing to do. */ | |
842 | return REG_VALID; | |
843 | } | |
844 | ||
845 | if (offset == 0 && len == reg_size) | |
846 | { | |
847 | /* Read the full register. */ | |
848 | return (is_raw) ? raw_read (regnum, out) : cooked_read (regnum, out); | |
849 | } | |
849d0ba8 | 850 | |
849d0ba8 | 851 | enum register_status status; |
33bab475 | 852 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); |
849d0ba8 | 853 | |
33bab475 AH |
854 | /* Read full register to buffer. */ |
855 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
849d0ba8 YQ |
856 | if (status != REG_VALID) |
857 | return status; | |
858 | ||
33bab475 AH |
859 | /* Copy out. */ |
860 | memcpy (out, reg + offset, len); | |
849d0ba8 YQ |
861 | return REG_VALID; |
862 | } | |
863 | ||
33bab475 AH |
864 | /* See regcache.h. */ |
865 | ||
8e7767e3 AH |
866 | void |
867 | reg_buffer::raw_collect_part (int regnum, int offset, int len, | |
868 | gdb_byte *out) const | |
869 | { | |
870 | int reg_size = register_size (arch (), regnum); | |
871 | ||
872 | gdb_assert (out != nullptr); | |
873 | gdb_assert (offset >= 0 && offset <= reg_size); | |
874 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
875 | ||
876 | if (offset == 0 && len == 0) | |
877 | { | |
878 | /* Nothing to do. */ | |
879 | return; | |
880 | } | |
881 | ||
882 | if (offset == 0 && len == reg_size) | |
883 | { | |
884 | /* Collect the full register. */ | |
885 | return raw_collect (regnum, out); | |
886 | } | |
887 | ||
888 | /* Read to buffer, then write out. */ | |
889 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
890 | raw_collect (regnum, reg); | |
891 | memcpy (out, reg + offset, len); | |
892 | } | |
893 | ||
894 | /* See regcache.h. */ | |
895 | ||
849d0ba8 YQ |
896 | enum register_status |
897 | regcache::write_part (int regnum, int offset, int len, | |
33bab475 | 898 | const gdb_byte *in, bool is_raw) |
ef79d9a3 | 899 | { |
33bab475 | 900 | int reg_size = register_size (arch (), regnum); |
123f5f96 | 901 | |
33bab475 | 902 | gdb_assert (in != NULL); |
8e7767e3 AH |
903 | gdb_assert (offset >= 0 && offset <= reg_size); |
904 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
905 | |
906 | if (offset == 0 && len == 0) | |
06c0b04e | 907 | { |
33bab475 AH |
908 | /* Nothing to do. */ |
909 | return REG_VALID; | |
910 | } | |
05d1431c | 911 | |
33bab475 AH |
912 | if (offset == 0 && len == reg_size) |
913 | { | |
914 | /* Write the full register. */ | |
915 | (is_raw) ? raw_write (regnum, in) : cooked_write (regnum, in); | |
916 | return REG_VALID; | |
06c0b04e | 917 | } |
849d0ba8 | 918 | |
33bab475 AH |
919 | enum register_status status; |
920 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
05d1431c | 921 | |
33bab475 AH |
922 | /* Read existing register to buffer. */ |
923 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
924 | if (status != REG_VALID) | |
925 | return status; | |
926 | ||
927 | /* Update buffer, then write back to regcache. */ | |
928 | memcpy (reg + offset, in, len); | |
929 | is_raw ? raw_write (regnum, reg) : cooked_write (regnum, reg); | |
05d1431c | 930 | return REG_VALID; |
06c0b04e AC |
931 | } |
932 | ||
33bab475 AH |
933 | /* See regcache.h. */ |
934 | ||
8e7767e3 AH |
935 | void |
936 | reg_buffer::raw_supply_part (int regnum, int offset, int len, | |
937 | const gdb_byte *in) | |
938 | { | |
939 | int reg_size = register_size (arch (), regnum); | |
940 | ||
941 | gdb_assert (in != nullptr); | |
942 | gdb_assert (offset >= 0 && offset <= reg_size); | |
943 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
944 | ||
945 | if (offset == 0 && len == 0) | |
946 | { | |
947 | /* Nothing to do. */ | |
948 | return; | |
949 | } | |
950 | ||
951 | if (offset == 0 && len == reg_size) | |
952 | { | |
953 | /* Supply the full register. */ | |
954 | return raw_supply (regnum, in); | |
955 | } | |
956 | ||
957 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
958 | ||
959 | /* Read existing value to buffer. */ | |
960 | raw_collect (regnum, reg); | |
961 | ||
962 | /* Write to buffer, then write out. */ | |
963 | memcpy (reg + offset, in, len); | |
964 | raw_supply (regnum, reg); | |
965 | } | |
966 | ||
ef79d9a3 | 967 | enum register_status |
33bab475 AH |
968 | readable_regcache::raw_read_part (int regnum, int offset, int len, |
969 | gdb_byte *buf) | |
ef79d9a3 | 970 | { |
4e888c28 | 971 | assert_regnum (regnum); |
849d0ba8 | 972 | return read_part (regnum, offset, len, buf, true); |
06c0b04e AC |
973 | } |
974 | ||
4f0420fd | 975 | /* See regcache.h. */ |
123f5f96 | 976 | |
ef79d9a3 YQ |
977 | void |
978 | regcache::raw_write_part (int regnum, int offset, int len, | |
979 | const gdb_byte *buf) | |
980 | { | |
4e888c28 | 981 | assert_regnum (regnum); |
849d0ba8 | 982 | write_part (regnum, offset, len, buf, true); |
06c0b04e AC |
983 | } |
984 | ||
33bab475 AH |
985 | /* See regcache.h. */ |
986 | ||
ef79d9a3 | 987 | enum register_status |
849d0ba8 YQ |
988 | readable_regcache::cooked_read_part (int regnum, int offset, int len, |
989 | gdb_byte *buf) | |
ef79d9a3 YQ |
990 | { |
991 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 992 | return read_part (regnum, offset, len, buf, false); |
06c0b04e AC |
993 | } |
994 | ||
33bab475 AH |
995 | /* See regcache.h. */ |
996 | ||
ef79d9a3 YQ |
997 | void |
998 | regcache::cooked_write_part (int regnum, int offset, int len, | |
999 | const gdb_byte *buf) | |
1000 | { | |
1001 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 1002 | write_part (regnum, offset, len, buf, false); |
06c0b04e | 1003 | } |
32178cab | 1004 | |
268a13a5 | 1005 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1006 | |
ef79d9a3 | 1007 | void |
9c861883 | 1008 | reg_buffer::raw_supply (int regnum, const void *buf) |
9a661b68 MK |
1009 | { |
1010 | void *regbuf; | |
1011 | size_t size; | |
1012 | ||
4e888c28 | 1013 | assert_regnum (regnum); |
9a661b68 | 1014 | |
ef79d9a3 YQ |
1015 | regbuf = register_buffer (regnum); |
1016 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1017 | |
1018 | if (buf) | |
ee99023e PA |
1019 | { |
1020 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1021 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1022 | } |
9a661b68 | 1023 | else |
ee99023e PA |
1024 | { |
1025 | /* This memset not strictly necessary, but better than garbage | |
1026 | in case the register value manages to escape somewhere (due | |
1027 | to a bug, no less). */ | |
1028 | memset (regbuf, 0, size); | |
ef79d9a3 | 1029 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1030 | } |
9a661b68 MK |
1031 | } |
1032 | ||
9c861883 | 1033 | /* See regcache.h. */ |
b057297a AH |
1034 | |
1035 | void | |
9c861883 AH |
1036 | reg_buffer::raw_supply_integer (int regnum, const gdb_byte *addr, |
1037 | int addr_len, bool is_signed) | |
b057297a AH |
1038 | { |
1039 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1040 | gdb_byte *regbuf; | |
1041 | size_t regsize; | |
1042 | ||
4e888c28 | 1043 | assert_regnum (regnum); |
b057297a AH |
1044 | |
1045 | regbuf = register_buffer (regnum); | |
1046 | regsize = m_descr->sizeof_register[regnum]; | |
1047 | ||
1048 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1049 | byte_order); | |
1050 | m_register_status[regnum] = REG_VALID; | |
1051 | } | |
1052 | ||
9c861883 | 1053 | /* See regcache.h. */ |
f81fdd35 AH |
1054 | |
1055 | void | |
9c861883 | 1056 | reg_buffer::raw_supply_zeroed (int regnum) |
f81fdd35 AH |
1057 | { |
1058 | void *regbuf; | |
1059 | size_t size; | |
1060 | ||
4e888c28 | 1061 | assert_regnum (regnum); |
f81fdd35 AH |
1062 | |
1063 | regbuf = register_buffer (regnum); | |
1064 | size = m_descr->sizeof_register[regnum]; | |
1065 | ||
1066 | memset (regbuf, 0, size); | |
1067 | m_register_status[regnum] = REG_VALID; | |
1068 | } | |
1069 | ||
268a13a5 | 1070 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1071 | |
ef79d9a3 | 1072 | void |
9c861883 | 1073 | reg_buffer::raw_collect (int regnum, void *buf) const |
9a661b68 MK |
1074 | { |
1075 | const void *regbuf; | |
1076 | size_t size; | |
1077 | ||
ef79d9a3 | 1078 | gdb_assert (buf != NULL); |
4e888c28 | 1079 | assert_regnum (regnum); |
9a661b68 | 1080 | |
ef79d9a3 YQ |
1081 | regbuf = register_buffer (regnum); |
1082 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1083 | memcpy (buf, regbuf, size); |
1084 | } | |
1085 | ||
9c861883 | 1086 | /* See regcache.h. */ |
b057297a AH |
1087 | |
1088 | void | |
9c861883 AH |
1089 | reg_buffer::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, |
1090 | bool is_signed) const | |
b057297a AH |
1091 | { |
1092 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1093 | const gdb_byte *regbuf; | |
1094 | size_t regsize; | |
1095 | ||
4e888c28 | 1096 | assert_regnum (regnum); |
b057297a AH |
1097 | |
1098 | regbuf = register_buffer (regnum); | |
1099 | regsize = m_descr->sizeof_register[regnum]; | |
1100 | ||
1101 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1102 | byte_order); | |
1103 | } | |
1104 | ||
8e7767e3 AH |
1105 | /* See regcache.h. */ |
1106 | ||
1107 | void | |
1108 | regcache::transfer_regset_register (struct regcache *out_regcache, int regnum, | |
1109 | const gdb_byte *in_buf, gdb_byte *out_buf, | |
1110 | int slot_size, int offs) const | |
1111 | { | |
1112 | struct gdbarch *gdbarch = arch (); | |
1113 | int reg_size = std::min (register_size (gdbarch, regnum), slot_size); | |
1114 | ||
1115 | /* Use part versions and reg_size to prevent possible buffer overflows when | |
1116 | accessing the regcache. */ | |
1117 | ||
1118 | if (out_buf != nullptr) | |
1119 | { | |
1120 | raw_collect_part (regnum, 0, reg_size, out_buf + offs); | |
1121 | ||
1122 | /* Ensure any additional space is cleared. */ | |
1123 | if (slot_size > reg_size) | |
1124 | memset (out_buf + offs + reg_size, 0, slot_size - reg_size); | |
1125 | } | |
1126 | else if (in_buf != nullptr) | |
1127 | out_regcache->raw_supply_part (regnum, 0, reg_size, in_buf + offs); | |
1128 | else | |
1129 | { | |
1130 | /* Invalidate the register. */ | |
1131 | out_regcache->raw_supply (regnum, nullptr); | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* See regcache.h. */ | |
9c861883 | 1136 | |
ef79d9a3 YQ |
1137 | void |
1138 | regcache::transfer_regset (const struct regset *regset, | |
1139 | struct regcache *out_regcache, | |
8e7767e3 AH |
1140 | int regnum, const gdb_byte *in_buf, |
1141 | gdb_byte *out_buf, size_t size) const | |
0b309272 AA |
1142 | { |
1143 | const struct regcache_map_entry *map; | |
1144 | int offs = 0, count; | |
1145 | ||
19ba03f4 SM |
1146 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1147 | (count = map->count) != 0; | |
1148 | map++) | |
0b309272 AA |
1149 | { |
1150 | int regno = map->regno; | |
1151 | int slot_size = map->size; | |
1152 | ||
1153 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1154 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1155 | |
1156 | if (regno == REGCACHE_MAP_SKIP | |
1157 | || (regnum != -1 | |
1158 | && (regnum < regno || regnum >= regno + count))) | |
1159 | offs += count * slot_size; | |
1160 | ||
1161 | else if (regnum == -1) | |
1162 | for (; count--; regno++, offs += slot_size) | |
1163 | { | |
1164 | if (offs + slot_size > size) | |
1165 | break; | |
1166 | ||
8e7767e3 AH |
1167 | transfer_regset_register (out_regcache, regno, in_buf, out_buf, |
1168 | slot_size, offs); | |
0b309272 AA |
1169 | } |
1170 | else | |
1171 | { | |
1172 | /* Transfer a single register and return. */ | |
1173 | offs += (regnum - regno) * slot_size; | |
1174 | if (offs + slot_size > size) | |
1175 | return; | |
1176 | ||
8e7767e3 AH |
1177 | transfer_regset_register (out_regcache, regnum, in_buf, out_buf, |
1178 | slot_size, offs); | |
0b309272 AA |
1179 | return; |
1180 | } | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1185 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1186 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1187 | ||
1188 | void | |
1189 | regcache_supply_regset (const struct regset *regset, | |
1190 | struct regcache *regcache, | |
1191 | int regnum, const void *buf, size_t size) | |
1192 | { | |
8e7767e3 | 1193 | regcache->supply_regset (regset, regnum, (const gdb_byte *) buf, size); |
ef79d9a3 YQ |
1194 | } |
1195 | ||
1196 | void | |
1197 | regcache::supply_regset (const struct regset *regset, | |
1198 | int regnum, const void *buf, size_t size) | |
1199 | { | |
8e7767e3 | 1200 | transfer_regset (regset, this, regnum, (const gdb_byte *) buf, nullptr, size); |
0b309272 AA |
1201 | } |
1202 | ||
1203 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1204 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1205 | REGSET. */ | |
1206 | ||
1207 | void | |
1208 | regcache_collect_regset (const struct regset *regset, | |
1209 | const struct regcache *regcache, | |
1210 | int regnum, void *buf, size_t size) | |
1211 | { | |
8e7767e3 | 1212 | regcache->collect_regset (regset, regnum, (gdb_byte *) buf, size); |
ef79d9a3 YQ |
1213 | } |
1214 | ||
1215 | void | |
1216 | regcache::collect_regset (const struct regset *regset, | |
1217 | int regnum, void *buf, size_t size) const | |
1218 | { | |
8e7767e3 | 1219 | transfer_regset (regset, nullptr, regnum, nullptr, (gdb_byte *) buf, size); |
0b309272 AA |
1220 | } |
1221 | ||
268a13a5 | 1222 | /* See gdbsupport/common-regcache.h. */ |
f868386e AH |
1223 | |
1224 | bool | |
1225 | reg_buffer::raw_compare (int regnum, const void *buf, int offset) const | |
1226 | { | |
1227 | gdb_assert (buf != NULL); | |
1228 | assert_regnum (regnum); | |
1229 | ||
1230 | const char *regbuf = (const char *) register_buffer (regnum); | |
1231 | size_t size = m_descr->sizeof_register[regnum]; | |
1232 | gdb_assert (size >= offset); | |
1233 | ||
1234 | return (memcmp (buf, regbuf + offset, size - offset) == 0); | |
1235 | } | |
193cb69f | 1236 | |
515630c5 | 1237 | /* Special handling for register PC. */ |
32178cab MS |
1238 | |
1239 | CORE_ADDR | |
515630c5 | 1240 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1241 | { |
ac7936df | 1242 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1243 | |
32178cab MS |
1244 | CORE_ADDR pc_val; |
1245 | ||
61a1198a UW |
1246 | if (gdbarch_read_pc_p (gdbarch)) |
1247 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1248 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1249 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1250 | { |
61a1198a | 1251 | ULONGEST raw_val; |
123f5f96 | 1252 | |
05d1431c PA |
1253 | if (regcache_cooked_read_unsigned (regcache, |
1254 | gdbarch_pc_regnum (gdbarch), | |
1255 | &raw_val) == REG_UNAVAILABLE) | |
1256 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1257 | ||
214e098a | 1258 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1259 | } |
1260 | else | |
515630c5 UW |
1261 | internal_error (__FILE__, __LINE__, |
1262 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1263 | return pc_val; |
1264 | } | |
1265 | ||
fc75c28b TBA |
1266 | /* See gdbsupport/common-regcache.h. */ |
1267 | ||
1268 | CORE_ADDR | |
1269 | regcache_read_pc_protected (regcache *regcache) | |
1270 | { | |
1271 | CORE_ADDR pc; | |
1272 | try | |
1273 | { | |
1274 | pc = regcache_read_pc (regcache); | |
1275 | } | |
1276 | catch (const gdb_exception_error &ex) | |
1277 | { | |
1278 | pc = 0; | |
1279 | } | |
1280 | ||
1281 | return pc; | |
1282 | } | |
1283 | ||
32178cab | 1284 | void |
515630c5 | 1285 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1286 | { |
ac7936df | 1287 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1288 | |
61a1198a UW |
1289 | if (gdbarch_write_pc_p (gdbarch)) |
1290 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1291 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1292 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1293 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1294 | else |
1295 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1296 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1297 | |
1298 | /* Writing the PC (for instance, from "load") invalidates the | |
1299 | current frame. */ | |
1300 | reinit_frame_cache (); | |
32178cab MS |
1301 | } |
1302 | ||
d999647b | 1303 | int |
31716595 | 1304 | reg_buffer::num_raw_registers () const |
d999647b YQ |
1305 | { |
1306 | return gdbarch_num_regs (arch ()); | |
1307 | } | |
1308 | ||
ed771251 | 1309 | void |
ef79d9a3 | 1310 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1311 | { |
ef79d9a3 | 1312 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1313 | |
1314 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1315 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1316 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1317 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1318 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1319 | gdbarch_register_name (gdbarch, regno)); | |
1320 | else | |
1321 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1322 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1323 | { | |
1324 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1325 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1326 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1327 | |
1328 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1329 | for (int i = 0; i < size; i++) | |
1330 | { | |
1331 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1332 | } | |
1333 | if (size <= sizeof (LONGEST)) | |
1334 | { | |
1335 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1336 | ||
1337 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1338 | core_addr_to_string_nz (val), plongest (val)); | |
1339 | } | |
1340 | } | |
1341 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1342 | } | |
32178cab | 1343 | |
705152c5 | 1344 | static void |
0b39b52e | 1345 | reg_flush_command (const char *command, int from_tty) |
705152c5 MS |
1346 | { |
1347 | /* Force-flush the register cache. */ | |
1348 | registers_changed (); | |
1349 | if (from_tty) | |
a3f17187 | 1350 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1351 | } |
1352 | ||
4c74fe6b YQ |
1353 | void |
1354 | register_dump::dump (ui_file *file) | |
af030b9a | 1355 | { |
4c74fe6b YQ |
1356 | auto descr = regcache_descr (m_gdbarch); |
1357 | int regnum; | |
1358 | int footnote_nr = 0; | |
1359 | int footnote_register_offset = 0; | |
1360 | int footnote_register_type_name_null = 0; | |
1361 | long register_offset = 0; | |
af030b9a | 1362 | |
4c74fe6b | 1363 | gdb_assert (descr->nr_cooked_registers |
f6efe3f8 | 1364 | == gdbarch_num_cooked_regs (m_gdbarch)); |
af030b9a | 1365 | |
4c74fe6b YQ |
1366 | for (regnum = -1; regnum < descr->nr_cooked_registers; regnum++) |
1367 | { | |
1368 | /* Name. */ | |
1369 | if (regnum < 0) | |
1370 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1371 | else | |
1372 | { | |
1373 | const char *p = gdbarch_register_name (m_gdbarch, regnum); | |
123f5f96 | 1374 | |
4c74fe6b YQ |
1375 | if (p == NULL) |
1376 | p = ""; | |
1377 | else if (p[0] == '\0') | |
1378 | p = "''"; | |
1379 | fprintf_unfiltered (file, " %-10s", p); | |
1380 | } | |
af030b9a | 1381 | |
4c74fe6b YQ |
1382 | /* Number. */ |
1383 | if (regnum < 0) | |
1384 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1385 | else | |
1386 | fprintf_unfiltered (file, " %4d", regnum); | |
af030b9a | 1387 | |
4c74fe6b YQ |
1388 | /* Relative number. */ |
1389 | if (regnum < 0) | |
1390 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1391 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
1392 | fprintf_unfiltered (file, " %4d", regnum); | |
1393 | else | |
1394 | fprintf_unfiltered (file, " %4d", | |
1395 | (regnum - gdbarch_num_regs (m_gdbarch))); | |
af030b9a | 1396 | |
4c74fe6b YQ |
1397 | /* Offset. */ |
1398 | if (regnum < 0) | |
1399 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1400 | else | |
af030b9a | 1401 | { |
4c74fe6b YQ |
1402 | fprintf_unfiltered (file, " %6ld", |
1403 | descr->register_offset[regnum]); | |
1404 | if (register_offset != descr->register_offset[regnum] | |
1405 | || (regnum > 0 | |
1406 | && (descr->register_offset[regnum] | |
1407 | != (descr->register_offset[regnum - 1] | |
1408 | + descr->sizeof_register[regnum - 1]))) | |
1409 | ) | |
af030b9a | 1410 | { |
4c74fe6b YQ |
1411 | if (!footnote_register_offset) |
1412 | footnote_register_offset = ++footnote_nr; | |
1413 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
af030b9a | 1414 | } |
4c74fe6b YQ |
1415 | else |
1416 | fprintf_unfiltered (file, " "); | |
1417 | register_offset = (descr->register_offset[regnum] | |
1418 | + descr->sizeof_register[regnum]); | |
af030b9a AC |
1419 | } |
1420 | ||
4c74fe6b YQ |
1421 | /* Size. */ |
1422 | if (regnum < 0) | |
1423 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1424 | else | |
1425 | fprintf_unfiltered (file, " %5ld", descr->sizeof_register[regnum]); | |
f3384e66 | 1426 | |
4c74fe6b | 1427 | /* Type. */ |
f3384e66 | 1428 | { |
4c74fe6b YQ |
1429 | const char *t; |
1430 | std::string name_holder; | |
b59ff9d5 | 1431 | |
4c74fe6b YQ |
1432 | if (regnum < 0) |
1433 | t = "Type"; | |
215c69dc YQ |
1434 | else |
1435 | { | |
4c74fe6b | 1436 | static const char blt[] = "builtin_type"; |
123f5f96 | 1437 | |
7d93a1e0 | 1438 | t = register_type (m_gdbarch, regnum)->name (); |
4c74fe6b | 1439 | if (t == NULL) |
f3384e66 | 1440 | { |
4c74fe6b YQ |
1441 | if (!footnote_register_type_name_null) |
1442 | footnote_register_type_name_null = ++footnote_nr; | |
1443 | name_holder = string_printf ("*%d", | |
1444 | footnote_register_type_name_null); | |
1445 | t = name_holder.c_str (); | |
f3384e66 | 1446 | } |
4c74fe6b YQ |
1447 | /* Chop a leading builtin_type. */ |
1448 | if (startswith (t, blt)) | |
1449 | t += strlen (blt); | |
f3384e66 | 1450 | } |
4c74fe6b | 1451 | fprintf_unfiltered (file, " %-15s", t); |
f3384e66 | 1452 | } |
f3384e66 | 1453 | |
4c74fe6b YQ |
1454 | /* Leading space always present. */ |
1455 | fprintf_unfiltered (file, " "); | |
af030b9a | 1456 | |
4c74fe6b | 1457 | dump_reg (file, regnum); |
ed4227b7 | 1458 | |
4c74fe6b | 1459 | fprintf_unfiltered (file, "\n"); |
ed4227b7 PA |
1460 | } |
1461 | ||
4c74fe6b YQ |
1462 | if (footnote_register_offset) |
1463 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1464 | footnote_register_offset); | |
1465 | if (footnote_register_type_name_null) | |
1466 | fprintf_unfiltered (file, | |
1467 | "*%d: Register type's name NULL.\n", | |
1468 | footnote_register_type_name_null); | |
c21236dc PA |
1469 | } |
1470 | ||
8248946c | 1471 | #if GDB_SELF_TEST |
268a13a5 | 1472 | #include "gdbsupport/selftest.h" |
1b30aaa5 | 1473 | #include "selftest-arch.h" |
ec7a5fcb | 1474 | #include "target-float.h" |
8248946c YQ |
1475 | |
1476 | namespace selftests { | |
1477 | ||
159ed7d9 SM |
1478 | static size_t |
1479 | regcaches_size () | |
8248946c | 1480 | { |
888bdb2b SM |
1481 | size_t size = 0; |
1482 | for (auto it = regcaches.begin (); it != regcaches.end (); ++it) | |
1483 | { | |
1484 | auto &ptid_regc_map = it->second; | |
1485 | size += ptid_regc_map.size (); | |
1486 | } | |
1487 | ||
1488 | return size; | |
159ed7d9 | 1489 | } |
8248946c | 1490 | |
5b6d1e4f PA |
1491 | /* Wrapper around get_thread_arch_aspace_regcache that does some self checks. */ |
1492 | ||
1493 | static void | |
1494 | test_get_thread_arch_aspace_regcache (process_stratum_target *target, | |
1495 | ptid_t ptid, struct gdbarch *gdbarch, | |
1496 | address_space *aspace) | |
1497 | { | |
1498 | struct regcache *regcache | |
1499 | = get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace); | |
1500 | SELF_CHECK (regcache != NULL); | |
1501 | SELF_CHECK (regcache->target () == target); | |
1502 | SELF_CHECK (regcache->ptid () == ptid); | |
1503 | SELF_CHECK (regcache->aspace () == aspace); | |
1504 | } | |
1505 | ||
8248946c | 1506 | static void |
174981ae | 1507 | regcaches_test () |
8248946c YQ |
1508 | { |
1509 | /* It is empty at the start. */ | |
159ed7d9 | 1510 | SELF_CHECK (regcaches_size () == 0); |
8248946c YQ |
1511 | |
1512 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1513 | ||
5b6d1e4f PA |
1514 | test_target_ops test_target1; |
1515 | test_target_ops test_target2; | |
8248946c | 1516 | |
5b6d1e4f | 1517 | /* Get regcache from (target1,ptid1), a new regcache is added to |
159ed7d9 | 1518 | REGCACHES. */ |
5b6d1e4f PA |
1519 | test_get_thread_arch_aspace_regcache (&test_target1, ptid1, |
1520 | target_gdbarch (), | |
1521 | NULL); | |
159ed7d9 | 1522 | SELF_CHECK (regcaches_size () == 1); |
8248946c | 1523 | |
5b6d1e4f | 1524 | /* Get regcache from (target1,ptid2), a new regcache is added to |
159ed7d9 | 1525 | REGCACHES. */ |
5b6d1e4f PA |
1526 | test_get_thread_arch_aspace_regcache (&test_target1, ptid2, |
1527 | target_gdbarch (), | |
1528 | NULL); | |
159ed7d9 | 1529 | SELF_CHECK (regcaches_size () == 2); |
8248946c | 1530 | |
5b6d1e4f | 1531 | /* Get regcache from (target1,ptid3), a new regcache is added to |
159ed7d9 | 1532 | REGCACHES. */ |
5b6d1e4f PA |
1533 | test_get_thread_arch_aspace_regcache (&test_target1, ptid3, |
1534 | target_gdbarch (), | |
1535 | NULL); | |
159ed7d9 | 1536 | SELF_CHECK (regcaches_size () == 3); |
8248946c | 1537 | |
5b6d1e4f | 1538 | /* Get regcache from (target1,ptid2) again, nothing is added to |
159ed7d9 | 1539 | REGCACHES. */ |
5b6d1e4f PA |
1540 | test_get_thread_arch_aspace_regcache (&test_target1, ptid2, |
1541 | target_gdbarch (), | |
1542 | NULL); | |
159ed7d9 | 1543 | SELF_CHECK (regcaches_size () == 3); |
8248946c | 1544 | |
5b6d1e4f | 1545 | /* Get regcache from (target2,ptid2), a new regcache is added to |
159ed7d9 | 1546 | REGCACHES, since this time we're using a different target. */ |
5b6d1e4f PA |
1547 | test_get_thread_arch_aspace_regcache (&test_target2, ptid2, |
1548 | target_gdbarch (), | |
1549 | NULL); | |
159ed7d9 | 1550 | SELF_CHECK (regcaches_size () == 4); |
5b6d1e4f PA |
1551 | |
1552 | /* Mark that (target1,ptid2) changed. The regcache of (target1, | |
159ed7d9 | 1553 | ptid2) should be removed from REGCACHES. */ |
5b6d1e4f | 1554 | registers_changed_ptid (&test_target1, ptid2); |
159ed7d9 | 1555 | SELF_CHECK (regcaches_size () == 3); |
5b6d1e4f PA |
1556 | |
1557 | /* Get the regcache from (target2,ptid2) again, confirming the | |
1558 | registers_changed_ptid call above did not delete it. */ | |
1559 | test_get_thread_arch_aspace_regcache (&test_target2, ptid2, | |
1560 | target_gdbarch (), | |
1561 | NULL); | |
159ed7d9 | 1562 | SELF_CHECK (regcaches_size () == 3); |
5b6d1e4f PA |
1563 | |
1564 | /* Confirm that marking all regcaches of all targets as changed | |
159ed7d9 | 1565 | clears REGCACHES. */ |
5b6d1e4f | 1566 | registers_changed_ptid (nullptr, minus_one_ptid); |
159ed7d9 | 1567 | SELF_CHECK (regcaches_size () == 0); |
8248946c YQ |
1568 | } |
1569 | ||
1b30aaa5 YQ |
1570 | class target_ops_no_register : public test_target_ops |
1571 | { | |
1572 | public: | |
1573 | target_ops_no_register () | |
1574 | : test_target_ops {} | |
f6ac5f3d | 1575 | {} |
1b30aaa5 YQ |
1576 | |
1577 | void reset () | |
1578 | { | |
1579 | fetch_registers_called = 0; | |
1580 | store_registers_called = 0; | |
1581 | xfer_partial_called = 0; | |
1582 | } | |
1583 | ||
f6ac5f3d PA |
1584 | void fetch_registers (regcache *regs, int regno) override; |
1585 | void store_registers (regcache *regs, int regno) override; | |
1586 | ||
1587 | enum target_xfer_status xfer_partial (enum target_object object, | |
1588 | const char *annex, gdb_byte *readbuf, | |
1589 | const gdb_byte *writebuf, | |
1590 | ULONGEST offset, ULONGEST len, | |
1591 | ULONGEST *xfered_len) override; | |
1592 | ||
1b30aaa5 YQ |
1593 | unsigned int fetch_registers_called = 0; |
1594 | unsigned int store_registers_called = 0; | |
1595 | unsigned int xfer_partial_called = 0; | |
1596 | }; | |
1597 | ||
f6ac5f3d PA |
1598 | void |
1599 | target_ops_no_register::fetch_registers (regcache *regs, int regno) | |
1b30aaa5 | 1600 | { |
1b30aaa5 YQ |
1601 | /* Mark register available. */ |
1602 | regs->raw_supply_zeroed (regno); | |
f6ac5f3d | 1603 | this->fetch_registers_called++; |
1b30aaa5 YQ |
1604 | } |
1605 | ||
f6ac5f3d PA |
1606 | void |
1607 | target_ops_no_register::store_registers (regcache *regs, int regno) | |
1b30aaa5 | 1608 | { |
f6ac5f3d | 1609 | this->store_registers_called++; |
1b30aaa5 YQ |
1610 | } |
1611 | ||
f6ac5f3d PA |
1612 | enum target_xfer_status |
1613 | target_ops_no_register::xfer_partial (enum target_object object, | |
1614 | const char *annex, gdb_byte *readbuf, | |
1615 | const gdb_byte *writebuf, | |
1616 | ULONGEST offset, ULONGEST len, | |
1617 | ULONGEST *xfered_len) | |
1b30aaa5 | 1618 | { |
f6ac5f3d | 1619 | this->xfer_partial_called++; |
1b30aaa5 YQ |
1620 | |
1621 | *xfered_len = len; | |
1622 | return TARGET_XFER_OK; | |
1623 | } | |
1624 | ||
1625 | class readwrite_regcache : public regcache | |
1626 | { | |
1627 | public: | |
5b6d1e4f PA |
1628 | readwrite_regcache (process_stratum_target *target, |
1629 | struct gdbarch *gdbarch) | |
1630 | : regcache (target, gdbarch, nullptr) | |
1b30aaa5 YQ |
1631 | {} |
1632 | }; | |
1633 | ||
1634 | /* Test regcache::cooked_read gets registers from raw registers and | |
1635 | memory instead of target to_{fetch,store}_registers. */ | |
1636 | ||
1637 | static void | |
1638 | cooked_read_test (struct gdbarch *gdbarch) | |
1639 | { | |
236ef034 | 1640 | scoped_mock_context<target_ops_no_register> mockctx (gdbarch); |
1b30aaa5 YQ |
1641 | |
1642 | /* Test that read one raw register from regcache_no_target will go | |
1643 | to the target layer. */ | |
1b30aaa5 YQ |
1644 | |
1645 | /* Find a raw register which size isn't zero. */ | |
b926417a TT |
1646 | int nonzero_regnum; |
1647 | for (nonzero_regnum = 0; | |
1648 | nonzero_regnum < gdbarch_num_regs (gdbarch); | |
1649 | nonzero_regnum++) | |
1b30aaa5 | 1650 | { |
b926417a | 1651 | if (register_size (gdbarch, nonzero_regnum) != 0) |
1b30aaa5 YQ |
1652 | break; |
1653 | } | |
1654 | ||
236ef034 | 1655 | readwrite_regcache readwrite (&mockctx.mock_target, gdbarch); |
b926417a | 1656 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, nonzero_regnum)); |
1b30aaa5 | 1657 | |
b926417a | 1658 | readwrite.raw_read (nonzero_regnum, buf.data ()); |
1b30aaa5 YQ |
1659 | |
1660 | /* raw_read calls target_fetch_registers. */ | |
236ef034 PA |
1661 | SELF_CHECK (mockctx.mock_target.fetch_registers_called > 0); |
1662 | mockctx.mock_target.reset (); | |
1b30aaa5 YQ |
1663 | |
1664 | /* Mark all raw registers valid, so the following raw registers | |
1665 | accesses won't go to target. */ | |
1666 | for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
1667 | readwrite.raw_update (i); | |
1668 | ||
236ef034 | 1669 | mockctx.mock_target.reset (); |
1b30aaa5 YQ |
1670 | /* Then, read all raw and pseudo registers, and don't expect calling |
1671 | to_{fetch,store}_registers. */ | |
f6efe3f8 | 1672 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
1b30aaa5 YQ |
1673 | { |
1674 | if (register_size (gdbarch, regnum) == 0) | |
1675 | continue; | |
1676 | ||
b926417a | 1677 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
1b30aaa5 | 1678 | |
b926417a TT |
1679 | SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum, |
1680 | inner_buf.data ())); | |
1b30aaa5 | 1681 | |
236ef034 PA |
1682 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1683 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1684 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
1b30aaa5 | 1685 | |
236ef034 | 1686 | mockctx.mock_target.reset (); |
1b30aaa5 | 1687 | } |
a63f2d2f | 1688 | |
215c69dc | 1689 | readonly_detached_regcache readonly (readwrite); |
a63f2d2f YQ |
1690 | |
1691 | /* GDB may go to target layer to fetch all registers and memory for | |
1692 | readonly regcache. */ | |
236ef034 | 1693 | mockctx.mock_target.reset (); |
a63f2d2f | 1694 | |
f6efe3f8 | 1695 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
a63f2d2f | 1696 | { |
a63f2d2f YQ |
1697 | if (register_size (gdbarch, regnum) == 0) |
1698 | continue; | |
1699 | ||
b926417a | 1700 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
a63f2d2f | 1701 | enum register_status status = readonly.cooked_read (regnum, |
b926417a | 1702 | inner_buf.data ()); |
a63f2d2f YQ |
1703 | |
1704 | if (regnum < gdbarch_num_regs (gdbarch)) | |
1705 | { | |
1706 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1707 | ||
1708 | if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 | |
1709 | || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh | |
1710 | || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 | |
1711 | || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep | |
1712 | || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 | |
1713 | || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 | |
ea005f31 | 1714 | || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score |
bea556ab | 1715 | || bfd_arch == bfd_arch_riscv || bfd_arch == bfd_arch_csky) |
a63f2d2f YQ |
1716 | { |
1717 | /* Raw registers. If raw registers are not in save_reggroup, | |
1718 | their status are unknown. */ | |
1719 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1720 | SELF_CHECK (status == REG_VALID); | |
1721 | else | |
1722 | SELF_CHECK (status == REG_UNKNOWN); | |
1723 | } | |
1724 | else | |
1725 | SELF_CHECK (status == REG_VALID); | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1730 | SELF_CHECK (status == REG_VALID); | |
1731 | else | |
1732 | { | |
1733 | /* If pseudo registers are not in save_reggroup, some of | |
1734 | them can be computed from saved raw registers, but some | |
1735 | of them are unknown. */ | |
1736 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1737 | ||
1738 | if (bfd_arch == bfd_arch_frv | |
1739 | || bfd_arch == bfd_arch_m32c | |
1740 | || bfd_arch == bfd_arch_mep | |
1741 | || bfd_arch == bfd_arch_sh) | |
1742 | SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); | |
1743 | else if (bfd_arch == bfd_arch_mips | |
1744 | || bfd_arch == bfd_arch_h8300) | |
1745 | SELF_CHECK (status == REG_UNKNOWN); | |
1746 | else | |
1747 | SELF_CHECK (status == REG_VALID); | |
1748 | } | |
1749 | } | |
1750 | ||
236ef034 PA |
1751 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1752 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1753 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
a63f2d2f | 1754 | |
236ef034 | 1755 | mockctx.mock_target.reset (); |
a63f2d2f | 1756 | } |
1b30aaa5 YQ |
1757 | } |
1758 | ||
ec7a5fcb YQ |
1759 | /* Test regcache::cooked_write by writing some expected contents to |
1760 | registers, and checking that contents read from registers and the | |
1761 | expected contents are the same. */ | |
1762 | ||
1763 | static void | |
1764 | cooked_write_test (struct gdbarch *gdbarch) | |
1765 | { | |
1766 | /* Error out if debugging something, because we're going to push the | |
1767 | test target, which would pop any existing target. */ | |
66b4deae | 1768 | if (current_top_target ()->stratum () >= process_stratum) |
ec7a5fcb YQ |
1769 | error (_("target already pushed")); |
1770 | ||
1771 | /* Create a mock environment. A process_stratum target pushed. */ | |
1772 | ||
1773 | target_ops_no_register mock_target; | |
1774 | ||
1775 | /* Push the process_stratum target so we can mock accessing | |
1776 | registers. */ | |
1777 | push_target (&mock_target); | |
1778 | ||
1779 | /* Pop it again on exit (return/exception). */ | |
1780 | struct on_exit | |
1781 | { | |
1782 | ~on_exit () | |
1783 | { | |
1784 | pop_all_targets_at_and_above (process_stratum); | |
1785 | } | |
1786 | } pop_targets; | |
1787 | ||
5b6d1e4f | 1788 | readwrite_regcache readwrite (&mock_target, gdbarch); |
ec7a5fcb | 1789 | |
f6efe3f8 | 1790 | const int num_regs = gdbarch_num_cooked_regs (gdbarch); |
ec7a5fcb YQ |
1791 | |
1792 | for (auto regnum = 0; regnum < num_regs; regnum++) | |
1793 | { | |
1794 | if (register_size (gdbarch, regnum) == 0 | |
1795 | || gdbarch_cannot_store_register (gdbarch, regnum)) | |
1796 | continue; | |
1797 | ||
1798 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1799 | ||
abf516c6 UW |
1800 | if (bfd_arch == bfd_arch_sparc |
1801 | /* SPARC64_CWP_REGNUM, SPARC64_PSTATE_REGNUM, | |
1802 | SPARC64_ASI_REGNUM and SPARC64_CCR_REGNUM are hard to test. */ | |
1803 | && gdbarch_ptr_bit (gdbarch) == 64 | |
1804 | && (regnum >= gdbarch_num_regs (gdbarch) | |
1805 | && regnum <= gdbarch_num_regs (gdbarch) + 4)) | |
ec7a5fcb YQ |
1806 | continue; |
1807 | ||
1808 | std::vector<gdb_byte> expected (register_size (gdbarch, regnum), 0); | |
1809 | std::vector<gdb_byte> buf (register_size (gdbarch, regnum), 0); | |
1810 | const auto type = register_type (gdbarch, regnum); | |
1811 | ||
78134374 SM |
1812 | if (type->code () == TYPE_CODE_FLT |
1813 | || type->code () == TYPE_CODE_DECFLOAT) | |
ec7a5fcb YQ |
1814 | { |
1815 | /* Generate valid float format. */ | |
1816 | target_float_from_string (expected.data (), type, "1.25"); | |
1817 | } | |
78134374 SM |
1818 | else if (type->code () == TYPE_CODE_INT |
1819 | || type->code () == TYPE_CODE_ARRAY | |
1820 | || type->code () == TYPE_CODE_PTR | |
1821 | || type->code () == TYPE_CODE_UNION | |
1822 | || type->code () == TYPE_CODE_STRUCT) | |
ec7a5fcb YQ |
1823 | { |
1824 | if (bfd_arch == bfd_arch_ia64 | |
1825 | || (regnum >= gdbarch_num_regs (gdbarch) | |
1826 | && (bfd_arch == bfd_arch_xtensa | |
1827 | || bfd_arch == bfd_arch_bfin | |
1828 | || bfd_arch == bfd_arch_m32c | |
1829 | /* m68hc11 pseudo registers are in memory. */ | |
1830 | || bfd_arch == bfd_arch_m68hc11 | |
1831 | || bfd_arch == bfd_arch_m68hc12 | |
1832 | || bfd_arch == bfd_arch_s390)) | |
1833 | || (bfd_arch == bfd_arch_frv | |
1834 | /* FRV pseudo registers except iacc0. */ | |
1835 | && regnum > gdbarch_num_regs (gdbarch))) | |
1836 | { | |
1837 | /* Skip setting the expected values for some architecture | |
1838 | registers. */ | |
1839 | } | |
1840 | else if (bfd_arch == bfd_arch_rl78 && regnum == 40) | |
1841 | { | |
1842 | /* RL78_PC_REGNUM */ | |
1843 | for (auto j = 0; j < register_size (gdbarch, regnum) - 1; j++) | |
1844 | expected[j] = j; | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | for (auto j = 0; j < register_size (gdbarch, regnum); j++) | |
1849 | expected[j] = j; | |
1850 | } | |
1851 | } | |
78134374 | 1852 | else if (type->code () == TYPE_CODE_FLAGS) |
ec7a5fcb YQ |
1853 | { |
1854 | /* No idea how to test flags. */ | |
1855 | continue; | |
1856 | } | |
1857 | else | |
1858 | { | |
1859 | /* If we don't know how to create the expected value for the | |
1860 | this type, make it fail. */ | |
1861 | SELF_CHECK (0); | |
1862 | } | |
1863 | ||
1864 | readwrite.cooked_write (regnum, expected.data ()); | |
1865 | ||
1866 | SELF_CHECK (readwrite.cooked_read (regnum, buf.data ()) == REG_VALID); | |
1867 | SELF_CHECK (expected == buf); | |
1868 | } | |
1869 | } | |
1870 | ||
b161a60d SM |
1871 | /* Verify that when two threads with the same ptid exist (from two different |
1872 | targets) and one of them changes ptid, we only update the appropriate | |
1873 | regcaches. */ | |
1874 | ||
1875 | static void | |
1876 | regcache_thread_ptid_changed () | |
1877 | { | |
1878 | /* This test relies on the global regcache list to initially be empty. */ | |
1879 | registers_changed (); | |
1880 | ||
1881 | /* Any arch will do. */ | |
1882 | gdbarch *arch = current_inferior ()->gdbarch; | |
1883 | ||
1884 | /* Prepare two targets with one thread each, with the same ptid. */ | |
1885 | scoped_mock_context<test_target_ops> target1 (arch); | |
1886 | scoped_mock_context<test_target_ops> target2 (arch); | |
1887 | target2.mock_inferior.next = &target1.mock_inferior; | |
1888 | ||
1889 | ptid_t old_ptid (111, 222); | |
1890 | ptid_t new_ptid (111, 333); | |
1891 | ||
1892 | target1.mock_inferior.pid = old_ptid.pid (); | |
1893 | target1.mock_thread.ptid = old_ptid; | |
1894 | target2.mock_inferior.pid = old_ptid.pid (); | |
1895 | target2.mock_thread.ptid = old_ptid; | |
1896 | ||
1897 | gdb_assert (regcaches.empty ()); | |
1898 | ||
1899 | /* Populate the regcaches container. */ | |
1900 | get_thread_arch_aspace_regcache (&target1.mock_target, old_ptid, arch, | |
1901 | nullptr); | |
1902 | get_thread_arch_aspace_regcache (&target2.mock_target, old_ptid, arch, | |
1903 | nullptr); | |
1904 | ||
888bdb2b SM |
1905 | /* Return the count of regcaches for (TARGET, PTID) in REGCACHES. */ |
1906 | auto regcache_count = [] (process_stratum_target *target, ptid_t ptid) | |
1907 | -> int | |
b161a60d | 1908 | { |
888bdb2b SM |
1909 | auto ptid_regc_map_it = regcaches.find (target); |
1910 | if (ptid_regc_map_it != regcaches.end ()) | |
b161a60d | 1911 | { |
888bdb2b SM |
1912 | auto &ptid_regc_map = ptid_regc_map_it->second; |
1913 | auto range = ptid_regc_map.equal_range (ptid); | |
1914 | return std::distance (range.first, range.second); | |
b161a60d | 1915 | } |
888bdb2b | 1916 | return 0; |
b161a60d SM |
1917 | }; |
1918 | ||
888bdb2b SM |
1919 | gdb_assert (regcaches.size () == 2); |
1920 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 1); | |
1921 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 0); | |
1922 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
1923 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
1924 | |
1925 | thread_change_ptid (&target1.mock_target, old_ptid, new_ptid); | |
1926 | ||
888bdb2b SM |
1927 | gdb_assert (regcaches.size () == 2); |
1928 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 0); | |
1929 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 1); | |
1930 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
1931 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
1932 | |
1933 | /* Leave the regcache list empty. */ | |
1934 | registers_changed (); | |
1935 | gdb_assert (regcaches.empty ()); | |
1936 | } | |
1937 | ||
8248946c YQ |
1938 | } // namespace selftests |
1939 | #endif /* GDB_SELF_TEST */ | |
1940 | ||
6c265988 | 1941 | void _initialize_regcache (); |
32178cab | 1942 | void |
6c265988 | 1943 | _initialize_regcache () |
32178cab | 1944 | { |
3e43a32a MS |
1945 | regcache_descr_handle |
1946 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1947 | |
76727919 | 1948 | gdb::observers::target_changed.attach (regcache_observer_target_changed); |
159ed7d9 | 1949 | gdb::observers::thread_ptid_changed.attach (regcache_thread_ptid_changed); |
f4c5303c | 1950 | |
705152c5 | 1951 | add_com ("flushregs", class_maintenance, reg_flush_command, |
590042fc | 1952 | _("Force gdb to flush its register cache (maintainer command).")); |
39f77062 | 1953 | |
8248946c | 1954 | #if GDB_SELF_TEST |
174981ae | 1955 | selftests::register_test ("regcaches", selftests::regcaches_test); |
1b30aaa5 YQ |
1956 | |
1957 | selftests::register_test_foreach_arch ("regcache::cooked_read_test", | |
1958 | selftests::cooked_read_test); | |
ec7a5fcb YQ |
1959 | selftests::register_test_foreach_arch ("regcache::cooked_write_test", |
1960 | selftests::cooked_write_test); | |
b161a60d SM |
1961 | selftests::register_test ("regcache_thread_ptid_changed", |
1962 | selftests::regcache_thread_ptid_changed); | |
8248946c | 1963 | #endif |
32178cab | 1964 | } |