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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 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> |
50a5f187 | 33 | #include "cli/cli-cmds.h" |
32178cab MS |
34 | |
35 | /* | |
36 | * DATA STRUCTURE | |
37 | * | |
38 | * Here is the actual register cache. | |
39 | */ | |
40 | ||
3fadccb3 | 41 | /* Per-architecture object describing the layout of a register cache. |
0df8b418 | 42 | Computed once when the architecture is created. */ |
3fadccb3 | 43 | |
6bd434d6 | 44 | static struct gdbarch_data *regcache_descr_handle; |
3fadccb3 AC |
45 | |
46 | struct regcache_descr | |
47 | { | |
48 | /* The architecture this descriptor belongs to. */ | |
49 | struct gdbarch *gdbarch; | |
50 | ||
bb1db049 AC |
51 | /* The raw register cache. Each raw (or hard) register is supplied |
52 | by the target interface. The raw cache should not contain | |
53 | redundant information - if the PC is constructed from two | |
d2f0b918 | 54 | registers then those registers and not the PC lives in the raw |
bb1db049 | 55 | cache. */ |
3fadccb3 | 56 | long sizeof_raw_registers; |
3fadccb3 | 57 | |
d138e37a AC |
58 | /* The cooked register space. Each cooked register in the range |
59 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
60 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 61 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 62 | both raw registers and memory by the architecture methods |
02f60eae | 63 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 64 | int nr_cooked_registers; |
067df2e5 | 65 | long sizeof_cooked_registers; |
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. */ |
f6efe3f8 | 92 | descr->nr_cooked_registers = gdbarch_num_cooked_regs (gdbarch); |
3fadccb3 | 93 | |
bb425013 | 94 | /* Fill in a table of register types. */ |
116f06ea | 95 | descr->register_type |
3e43a32a MS |
96 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, |
97 | struct type *); | |
bb425013 | 98 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 99 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 100 | |
bb1db049 AC |
101 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
102 | into the register cache. */ | |
bb1db049 | 103 | |
067df2e5 | 104 | /* Lay out the register cache. |
3fadccb3 | 105 | |
78134374 | 106 | NOTE: cagney/2002-05-22: Only register_type () is used when |
bb425013 AC |
107 | constructing the register cache. It is assumed that the |
108 | register's raw size, virtual size and type length are all the | |
109 | same. */ | |
3fadccb3 AC |
110 | |
111 | { | |
112 | long offset = 0; | |
123f5f96 | 113 | |
116f06ea AC |
114 | descr->sizeof_register |
115 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
116 | descr->register_offset | |
117 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
d999647b | 118 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
99e42fd8 PA |
119 | { |
120 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); | |
121 | descr->register_offset[i] = offset; | |
122 | offset += descr->sizeof_register[i]; | |
99e42fd8 PA |
123 | } |
124 | /* Set the real size of the raw register cache buffer. */ | |
125 | descr->sizeof_raw_registers = offset; | |
126 | ||
127 | for (; i < descr->nr_cooked_registers; i++) | |
3fadccb3 | 128 | { |
bb425013 | 129 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
130 | descr->register_offset[i] = offset; |
131 | offset += descr->sizeof_register[i]; | |
3fadccb3 | 132 | } |
99e42fd8 | 133 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 134 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
135 | } |
136 | ||
3fadccb3 AC |
137 | return descr; |
138 | } | |
139 | ||
140 | static struct regcache_descr * | |
141 | regcache_descr (struct gdbarch *gdbarch) | |
142 | { | |
19ba03f4 SM |
143 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
144 | regcache_descr_handle); | |
3fadccb3 AC |
145 | } |
146 | ||
bb425013 AC |
147 | /* Utility functions returning useful register attributes stored in |
148 | the regcache descr. */ | |
149 | ||
150 | struct type * | |
151 | register_type (struct gdbarch *gdbarch, int regnum) | |
152 | { | |
153 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 154 | |
bb425013 AC |
155 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
156 | return descr->register_type[regnum]; | |
157 | } | |
158 | ||
0ed04cce AC |
159 | /* Utility functions returning useful register attributes stored in |
160 | the regcache descr. */ | |
161 | ||
08a617da AC |
162 | int |
163 | register_size (struct gdbarch *gdbarch, int regnum) | |
164 | { | |
165 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
166 | int size; | |
123f5f96 | 167 | |
f6efe3f8 | 168 | gdb_assert (regnum >= 0 && regnum < gdbarch_num_cooked_regs (gdbarch)); |
08a617da | 169 | size = descr->sizeof_register[regnum]; |
08a617da AC |
170 | return size; |
171 | } | |
172 | ||
268a13a5 | 173 | /* See gdbsupport/common-regcache.h. */ |
8d689ee5 YQ |
174 | |
175 | int | |
176 | regcache_register_size (const struct regcache *regcache, int n) | |
177 | { | |
ac7936df | 178 | return register_size (regcache->arch (), n); |
8d689ee5 YQ |
179 | } |
180 | ||
31716595 YQ |
181 | reg_buffer::reg_buffer (gdbarch *gdbarch, bool has_pseudo) |
182 | : m_has_pseudo (has_pseudo) | |
3fadccb3 | 183 | { |
ef79d9a3 YQ |
184 | gdb_assert (gdbarch != NULL); |
185 | m_descr = regcache_descr (gdbarch); | |
4621115f | 186 | |
11bb5c41 SM |
187 | /* We don't zero-initialize the M_REGISTERS array, as the bytes it contains |
188 | aren't meaningful as long as the corresponding register status is not | |
189 | REG_VALID. */ | |
31716595 | 190 | if (has_pseudo) |
4621115f | 191 | { |
11bb5c41 | 192 | m_registers.reset (new gdb_byte[m_descr->sizeof_cooked_registers]); |
835dcf92 SM |
193 | m_register_status.reset |
194 | (new register_status[m_descr->nr_cooked_registers] ()); | |
4621115f YQ |
195 | } |
196 | else | |
197 | { | |
11bb5c41 | 198 | m_registers.reset (new gdb_byte[m_descr->sizeof_raw_registers]); |
835dcf92 SM |
199 | m_register_status.reset |
200 | (new register_status[gdbarch_num_regs (gdbarch)] ()); | |
4621115f | 201 | } |
31716595 YQ |
202 | } |
203 | ||
5b6d1e4f PA |
204 | regcache::regcache (process_stratum_target *target, gdbarch *gdbarch, |
205 | const address_space *aspace_) | |
796bb026 YQ |
206 | /* The register buffers. A read/write register cache can only hold |
207 | [0 .. gdbarch_num_regs). */ | |
5b6d1e4f | 208 | : detached_regcache (gdbarch, false), m_aspace (aspace_), m_target (target) |
31716595 | 209 | { |
ef79d9a3 YQ |
210 | m_ptid = minus_one_ptid; |
211 | } | |
4621115f | 212 | |
302abd6e SM |
213 | readonly_detached_regcache::readonly_detached_regcache (regcache &src) |
214 | : readonly_detached_regcache (src.arch (), | |
215 | [&src] (int regnum, gdb_byte *buf) | |
216 | { | |
217 | return src.cooked_read (regnum, buf); | |
218 | }) | |
daf6667d YQ |
219 | { |
220 | } | |
221 | ||
ef79d9a3 | 222 | gdbarch * |
31716595 | 223 | reg_buffer::arch () const |
ef79d9a3 YQ |
224 | { |
225 | return m_descr->gdbarch; | |
226 | } | |
3fadccb3 | 227 | |
51b1fe4e AC |
228 | /* Return a pointer to register REGNUM's buffer cache. */ |
229 | ||
ef79d9a3 | 230 | gdb_byte * |
31716595 | 231 | reg_buffer::register_buffer (int regnum) const |
51b1fe4e | 232 | { |
835dcf92 | 233 | return m_registers.get () + m_descr->register_offset[regnum]; |
51b1fe4e AC |
234 | } |
235 | ||
ef79d9a3 | 236 | void |
302abd6e | 237 | reg_buffer::save (register_read_ftype cooked_read) |
ef79d9a3 YQ |
238 | { |
239 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 240 | int regnum; |
123f5f96 | 241 | |
daf6667d YQ |
242 | /* It should have pseudo registers. */ |
243 | gdb_assert (m_has_pseudo); | |
2d28509a | 244 | /* Clear the dest. */ |
835dcf92 SM |
245 | memset (m_registers.get (), 0, m_descr->sizeof_cooked_registers); |
246 | memset (m_register_status.get (), REG_UNKNOWN, m_descr->nr_cooked_registers); | |
2d28509a | 247 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
248 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
249 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 250 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 251 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
252 | { |
253 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
254 | { | |
50d6adef | 255 | gdb_byte *dst_buf = register_buffer (regnum); |
302abd6e | 256 | enum register_status status = cooked_read (regnum, dst_buf); |
123f5f96 | 257 | |
50d6adef AH |
258 | gdb_assert (status != REG_UNKNOWN); |
259 | ||
260 | if (status != REG_VALID) | |
261 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 262 | |
ef79d9a3 | 263 | m_register_status[regnum] = status; |
2d28509a AC |
264 | } |
265 | } | |
266 | } | |
267 | ||
ef79d9a3 | 268 | void |
daf6667d | 269 | regcache::restore (readonly_detached_regcache *src) |
2d28509a | 270 | { |
ef79d9a3 | 271 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 272 | int regnum; |
123f5f96 | 273 | |
fc5b8736 | 274 | gdb_assert (src != NULL); |
daf6667d | 275 | gdb_assert (src->m_has_pseudo); |
fc5b8736 YQ |
276 | |
277 | gdb_assert (gdbarch == src->arch ()); | |
278 | ||
2d28509a | 279 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
280 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
281 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 282 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 283 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 284 | { |
5602984a | 285 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 286 | { |
ef79d9a3 YQ |
287 | if (src->m_register_status[regnum] == REG_VALID) |
288 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
289 | } |
290 | } | |
291 | } | |
292 | ||
268a13a5 | 293 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 294 | |
ef79d9a3 | 295 | enum register_status |
c8ec2f33 | 296 | reg_buffer::get_register_status (int regnum) const |
ef79d9a3 | 297 | { |
c8ec2f33 | 298 | assert_regnum (regnum); |
6ed7ea50 | 299 | |
aac0d564 | 300 | return m_register_status[regnum]; |
3fadccb3 AC |
301 | } |
302 | ||
ef79d9a3 | 303 | void |
9c861883 | 304 | reg_buffer::invalidate (int regnum) |
ef79d9a3 | 305 | { |
4e888c28 | 306 | assert_regnum (regnum); |
ef79d9a3 YQ |
307 | m_register_status[regnum] = REG_UNKNOWN; |
308 | } | |
9c5ea4d9 | 309 | |
4e888c28 | 310 | void |
31716595 | 311 | reg_buffer::assert_regnum (int regnum) const |
4e888c28 | 312 | { |
31716595 YQ |
313 | gdb_assert (regnum >= 0); |
314 | if (m_has_pseudo) | |
315 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
316 | else | |
317 | gdb_assert (regnum < gdbarch_num_regs (arch ())); | |
4e888c28 YQ |
318 | } |
319 | ||
888bdb2b SM |
320 | /* Type to map a ptid to a list of regcaches (one thread may have multiple |
321 | regcaches, associated to different gdbarches). */ | |
322 | ||
323 | using ptid_regcache_map | |
324 | = std::unordered_multimap<ptid_t, regcache_up, hash_ptid>; | |
325 | ||
b70e516e | 326 | /* Type holding regcaches for a given pid. */ |
888bdb2b | 327 | |
b70e516e SM |
328 | using pid_ptid_regcache_map = std::unordered_map<int, ptid_regcache_map>; |
329 | ||
330 | /* Type holding regcaches for a given target. */ | |
331 | ||
332 | using target_pid_ptid_regcache_map | |
333 | = std::unordered_map<process_stratum_target *, pid_ptid_regcache_map>; | |
888bdb2b SM |
334 | |
335 | /* Global structure containing the existing regcaches. */ | |
3fadccb3 | 336 | |
5ebd2499 | 337 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
338 | recording if the register values have been changed (eg. by the |
339 | user). Therefore all registers must be written back to the | |
340 | target when appropriate. */ | |
b70e516e | 341 | static target_pid_ptid_regcache_map regcaches; |
c2250ad1 UW |
342 | |
343 | struct regcache * | |
5b6d1e4f | 344 | get_thread_arch_aspace_regcache (process_stratum_target *target, |
888bdb2b | 345 | ptid_t ptid, gdbarch *arch, |
e2d96639 | 346 | struct address_space *aspace) |
c2250ad1 | 347 | { |
5b6d1e4f PA |
348 | gdb_assert (target != nullptr); |
349 | ||
b70e516e SM |
350 | /* Find the map for this target. */ |
351 | pid_ptid_regcache_map &pid_ptid_regc_map = regcaches[target]; | |
352 | ||
353 | /* Find the map for this pid. */ | |
354 | ptid_regcache_map &ptid_regc_map = pid_ptid_regc_map[ptid.pid ()]; | |
594f7785 | 355 | |
888bdb2b SM |
356 | /* Check first if a regcache for this arch already exists. */ |
357 | auto range = ptid_regc_map.equal_range (ptid); | |
358 | for (auto it = range.first; it != range.second; ++it) | |
359 | { | |
360 | if (it->second->arch () == arch) | |
361 | return it->second.get (); | |
362 | } | |
594f7785 | 363 | |
888bdb2b SM |
364 | /* It does not exist, create it. */ |
365 | regcache *new_regcache = new regcache (target, arch, aspace); | |
ef79d9a3 | 366 | new_regcache->set_ptid (ptid); |
38f8aa06 TV |
367 | /* Work around a problem with g++ 4.8 (PR96537): Call the regcache_up |
368 | constructor explictly instead of implicitly. */ | |
369 | ptid_regc_map.insert (std::make_pair (ptid, regcache_up (new_regcache))); | |
e2d96639 | 370 | |
e2d96639 YQ |
371 | return new_regcache; |
372 | } | |
373 | ||
374 | struct regcache * | |
5b6d1e4f PA |
375 | get_thread_arch_regcache (process_stratum_target *target, ptid_t ptid, |
376 | struct gdbarch *gdbarch) | |
e2d96639 | 377 | { |
5b6d1e4f PA |
378 | scoped_restore_current_inferior restore_current_inferior; |
379 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
ed4227b7 | 380 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 381 | |
5b6d1e4f | 382 | return get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace); |
594f7785 UW |
383 | } |
384 | ||
5b6d1e4f | 385 | static process_stratum_target *current_thread_target; |
c2250ad1 UW |
386 | static ptid_t current_thread_ptid; |
387 | static struct gdbarch *current_thread_arch; | |
388 | ||
389 | struct regcache * | |
5b6d1e4f | 390 | get_thread_regcache (process_stratum_target *target, ptid_t ptid) |
c2250ad1 | 391 | { |
5b6d1e4f PA |
392 | if (!current_thread_arch |
393 | || target != current_thread_target | |
394 | || current_thread_ptid != ptid) | |
c2250ad1 | 395 | { |
5b6d1e4f PA |
396 | gdb_assert (ptid != null_ptid); |
397 | ||
c2250ad1 | 398 | current_thread_ptid = ptid; |
5b6d1e4f PA |
399 | current_thread_target = target; |
400 | ||
401 | scoped_restore_current_inferior restore_current_inferior; | |
402 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
c2250ad1 UW |
403 | current_thread_arch = target_thread_architecture (ptid); |
404 | } | |
405 | ||
5b6d1e4f | 406 | return get_thread_arch_regcache (target, ptid, current_thread_arch); |
c2250ad1 UW |
407 | } |
408 | ||
00431a78 PA |
409 | /* See regcache.h. */ |
410 | ||
411 | struct regcache * | |
412 | get_thread_regcache (thread_info *thread) | |
413 | { | |
5b6d1e4f PA |
414 | return get_thread_regcache (thread->inf->process_target (), |
415 | thread->ptid); | |
00431a78 PA |
416 | } |
417 | ||
c2250ad1 UW |
418 | struct regcache * |
419 | get_current_regcache (void) | |
594f7785 | 420 | { |
00431a78 | 421 | return get_thread_regcache (inferior_thread ()); |
594f7785 | 422 | } |
32178cab | 423 | |
268a13a5 | 424 | /* See gdbsupport/common-regcache.h. */ |
361c8ade GB |
425 | |
426 | struct regcache * | |
427 | get_thread_regcache_for_ptid (ptid_t ptid) | |
428 | { | |
5b6d1e4f PA |
429 | /* This function doesn't take a process_stratum_target parameter |
430 | because it's a gdbsupport/ routine implemented by both gdb and | |
431 | gdbserver. It always refers to a ptid of the current target. */ | |
432 | process_stratum_target *proc_target = current_inferior ()->process_target (); | |
433 | return get_thread_regcache (proc_target, ptid); | |
361c8ade | 434 | } |
32178cab | 435 | |
f4c5303c OF |
436 | /* Observer for the target_changed event. */ |
437 | ||
2c0b251b | 438 | static void |
f4c5303c OF |
439 | regcache_observer_target_changed (struct target_ops *target) |
440 | { | |
441 | registers_changed (); | |
442 | } | |
443 | ||
159ed7d9 SM |
444 | /* Update regcaches related to OLD_PTID to now use NEW_PTID. */ |
445 | static void | |
b161a60d SM |
446 | regcache_thread_ptid_changed (process_stratum_target *target, |
447 | ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 448 | { |
b70e516e SM |
449 | /* Look up map for target. */ |
450 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
451 | if (pid_ptid_regc_map_it == regcaches.end ()) | |
452 | return; | |
888bdb2b | 453 | |
b70e516e SM |
454 | /* Look up map for pid. */ |
455 | pid_ptid_regcache_map &pid_ptid_regc_map = pid_ptid_regc_map_it->second; | |
456 | auto ptid_regc_map_it = pid_ptid_regc_map.find (old_ptid.pid ()); | |
457 | if (ptid_regc_map_it == pid_ptid_regc_map.end ()) | |
888bdb2b SM |
458 | return; |
459 | ||
b70e516e SM |
460 | /* Update all regcaches belonging to old_ptid. */ |
461 | ptid_regcache_map &ptid_regc_map = ptid_regc_map_it->second; | |
888bdb2b SM |
462 | auto range = ptid_regc_map.equal_range (old_ptid); |
463 | for (auto it = range.first; it != range.second;) | |
94bb8dfe | 464 | { |
888bdb2b SM |
465 | regcache_up rc = std::move (it->second); |
466 | rc->set_ptid (new_ptid); | |
467 | ||
468 | /* Remove old before inserting new, to avoid rehashing, | |
469 | which would invalidate iterators. */ | |
470 | it = ptid_regc_map.erase (it); | |
471 | ptid_regc_map.insert (std::make_pair (new_ptid, std::move (rc))); | |
94bb8dfe | 472 | } |
5231c1fd PA |
473 | } |
474 | ||
32178cab MS |
475 | /* Low level examining and depositing of registers. |
476 | ||
477 | The caller is responsible for making sure that the inferior is | |
478 | stopped before calling the fetching routines, or it will get | |
479 | garbage. (a change from GDB version 3, in which the caller got the | |
480 | value from the last stop). */ | |
481 | ||
482 | /* REGISTERS_CHANGED () | |
483 | ||
484 | Indicate that registers may have changed, so invalidate the cache. */ | |
485 | ||
486 | void | |
5b6d1e4f | 487 | registers_changed_ptid (process_stratum_target *target, ptid_t ptid) |
32178cab | 488 | { |
888bdb2b SM |
489 | if (target == nullptr) |
490 | { | |
491 | /* Since there can be ptid clashes between targets, it's not valid to | |
492 | pass a ptid without saying to which target it belongs. */ | |
493 | gdb_assert (ptid == minus_one_ptid); | |
494 | ||
495 | /* Delete all the regcaches of all targets. */ | |
496 | regcaches.clear (); | |
497 | } | |
b70e516e SM |
498 | else if (ptid.is_pid ()) |
499 | { | |
500 | /* Non-NULL target and pid ptid, delete all regcaches belonging | |
501 | to this (TARGET, PID). */ | |
502 | ||
503 | /* Look up map for target. */ | |
504 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
505 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
506 | { | |
507 | pid_ptid_regcache_map &pid_ptid_regc_map | |
508 | = pid_ptid_regc_map_it->second; | |
509 | ||
510 | pid_ptid_regc_map.erase (ptid.pid ()); | |
511 | } | |
512 | } | |
888bdb2b | 513 | else if (ptid != minus_one_ptid) |
c2250ad1 | 514 | { |
888bdb2b | 515 | /* Non-NULL target and non-minus_one_ptid, delete all regcaches belonging |
b70e516e SM |
516 | to this (TARGET, PTID). */ |
517 | ||
518 | /* Look up map for target. */ | |
519 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
520 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
e66408ed | 521 | { |
b70e516e SM |
522 | pid_ptid_regcache_map &pid_ptid_regc_map |
523 | = pid_ptid_regc_map_it->second; | |
524 | ||
525 | /* Look up map for pid. */ | |
526 | auto ptid_regc_map_it | |
527 | = pid_ptid_regc_map.find (ptid.pid ()); | |
528 | if (ptid_regc_map_it != pid_ptid_regc_map.end ()) | |
529 | { | |
530 | ptid_regcache_map &ptid_regc_map | |
531 | = ptid_regc_map_it->second; | |
532 | ||
533 | ptid_regc_map.erase (ptid); | |
534 | } | |
e66408ed | 535 | } |
888bdb2b SM |
536 | } |
537 | else | |
538 | { | |
539 | /* Non-NULL target and minus_one_ptid, delete all regcaches | |
540 | associated to this target. */ | |
541 | regcaches.erase (target); | |
c2250ad1 | 542 | } |
32178cab | 543 | |
5b6d1e4f PA |
544 | if ((target == nullptr || current_thread_target == target) |
545 | && current_thread_ptid.matches (ptid)) | |
041274d8 | 546 | { |
5b6d1e4f | 547 | current_thread_target = NULL; |
041274d8 PA |
548 | current_thread_ptid = null_ptid; |
549 | current_thread_arch = NULL; | |
550 | } | |
32178cab | 551 | |
5b6d1e4f PA |
552 | if ((target == nullptr || current_inferior ()->process_target () == target) |
553 | && inferior_ptid.matches (ptid)) | |
041274d8 PA |
554 | { |
555 | /* We just deleted the regcache of the current thread. Need to | |
556 | forget about any frames we have cached, too. */ | |
557 | reinit_frame_cache (); | |
558 | } | |
559 | } | |
c2250ad1 | 560 | |
00431a78 PA |
561 | /* See regcache.h. */ |
562 | ||
563 | void | |
564 | registers_changed_thread (thread_info *thread) | |
565 | { | |
5b6d1e4f | 566 | registers_changed_ptid (thread->inf->process_target (), thread->ptid); |
00431a78 PA |
567 | } |
568 | ||
041274d8 PA |
569 | void |
570 | registers_changed (void) | |
571 | { | |
5b6d1e4f | 572 | registers_changed_ptid (nullptr, minus_one_ptid); |
32178cab MS |
573 | } |
574 | ||
ef79d9a3 YQ |
575 | void |
576 | regcache::raw_update (int regnum) | |
577 | { | |
4e888c28 | 578 | assert_regnum (regnum); |
8e368124 | 579 | |
3fadccb3 AC |
580 | /* Make certain that the register cache is up-to-date with respect |
581 | to the current thread. This switching shouldn't be necessary | |
582 | only there is still only one target side register cache. Sigh! | |
583 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 584 | |
796bb026 | 585 | if (get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 586 | { |
ef79d9a3 | 587 | target_fetch_registers (this, regnum); |
788c8b10 PA |
588 | |
589 | /* A number of targets can't access the whole set of raw | |
590 | registers (because the debug API provides no means to get at | |
591 | them). */ | |
ef79d9a3 YQ |
592 | if (m_register_status[regnum] == REG_UNKNOWN) |
593 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 594 | } |
8e368124 AH |
595 | } |
596 | ||
ef79d9a3 | 597 | enum register_status |
849d0ba8 | 598 | readable_regcache::raw_read (int regnum, gdb_byte *buf) |
8e368124 AH |
599 | { |
600 | gdb_assert (buf != NULL); | |
ef79d9a3 | 601 | raw_update (regnum); |
05d1431c | 602 | |
ef79d9a3 YQ |
603 | if (m_register_status[regnum] != REG_VALID) |
604 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 605 | else |
ef79d9a3 YQ |
606 | memcpy (buf, register_buffer (regnum), |
607 | m_descr->sizeof_register[regnum]); | |
05d1431c | 608 | |
aac0d564 | 609 | return m_register_status[regnum]; |
61a0eb5b AC |
610 | } |
611 | ||
05d1431c | 612 | enum register_status |
28fc6740 | 613 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
614 | { |
615 | gdb_assert (regcache != NULL); | |
6f98355c | 616 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
617 | } |
618 | ||
6f98355c | 619 | template<typename T, typename> |
ef79d9a3 | 620 | enum register_status |
849d0ba8 | 621 | readable_regcache::raw_read (int regnum, T *val) |
28fc6740 | 622 | { |
2d522557 | 623 | gdb_byte *buf; |
05d1431c | 624 | enum register_status status; |
123f5f96 | 625 | |
4e888c28 | 626 | assert_regnum (regnum); |
ef79d9a3 YQ |
627 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
628 | status = raw_read (regnum, buf); | |
05d1431c | 629 | if (status == REG_VALID) |
6f98355c YQ |
630 | *val = extract_integer<T> (buf, |
631 | m_descr->sizeof_register[regnum], | |
632 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
633 | else |
634 | *val = 0; | |
635 | return status; | |
28fc6740 AC |
636 | } |
637 | ||
05d1431c | 638 | enum register_status |
28fc6740 AC |
639 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
640 | ULONGEST *val) | |
ef79d9a3 YQ |
641 | { |
642 | gdb_assert (regcache != NULL); | |
6f98355c | 643 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
644 | } |
645 | ||
c00dcbe9 MK |
646 | void |
647 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
648 | { |
649 | gdb_assert (regcache != NULL); | |
6f98355c | 650 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
651 | } |
652 | ||
6f98355c | 653 | template<typename T, typename> |
ef79d9a3 | 654 | void |
6f98355c | 655 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 656 | { |
7c543f7b | 657 | gdb_byte *buf; |
123f5f96 | 658 | |
4e888c28 | 659 | assert_regnum (regnum); |
ef79d9a3 | 660 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
6f98355c YQ |
661 | store_integer (buf, m_descr->sizeof_register[regnum], |
662 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 663 | raw_write (regnum, buf); |
c00dcbe9 MK |
664 | } |
665 | ||
666 | void | |
667 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
668 | ULONGEST val) | |
ef79d9a3 YQ |
669 | { |
670 | gdb_assert (regcache != NULL); | |
6f98355c | 671 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
672 | } |
673 | ||
9fd15b2e YQ |
674 | LONGEST |
675 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
676 | { | |
677 | LONGEST value; | |
678 | enum register_status status; | |
679 | ||
680 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
681 | if (status == REG_UNAVAILABLE) | |
682 | throw_error (NOT_AVAILABLE_ERROR, | |
683 | _("Register %d is not available"), regnum); | |
684 | return value; | |
685 | } | |
686 | ||
ef79d9a3 | 687 | enum register_status |
849d0ba8 | 688 | readable_regcache::cooked_read (int regnum, gdb_byte *buf) |
68365089 | 689 | { |
d138e37a | 690 | gdb_assert (regnum >= 0); |
ef79d9a3 | 691 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 692 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 693 | return raw_read (regnum, buf); |
849d0ba8 | 694 | else if (m_has_pseudo |
ef79d9a3 | 695 | && m_register_status[regnum] != REG_UNKNOWN) |
05d1431c | 696 | { |
ef79d9a3 YQ |
697 | if (m_register_status[regnum] == REG_VALID) |
698 | memcpy (buf, register_buffer (regnum), | |
699 | m_descr->sizeof_register[regnum]); | |
05d1431c | 700 | else |
ef79d9a3 | 701 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 702 | |
aac0d564 | 703 | return m_register_status[regnum]; |
05d1431c | 704 | } |
ef79d9a3 | 705 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
706 | { |
707 | struct value *mark, *computed; | |
708 | enum register_status result = REG_VALID; | |
709 | ||
710 | mark = value_mark (); | |
711 | ||
ef79d9a3 YQ |
712 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
713 | this, regnum); | |
3543a589 TT |
714 | if (value_entirely_available (computed)) |
715 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 716 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
717 | else |
718 | { | |
ef79d9a3 | 719 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
720 | result = REG_UNAVAILABLE; |
721 | } | |
722 | ||
723 | value_free_to_mark (mark); | |
724 | ||
725 | return result; | |
726 | } | |
d138e37a | 727 | else |
ef79d9a3 | 728 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 729 | regnum, buf); |
61a0eb5b AC |
730 | } |
731 | ||
ef79d9a3 | 732 | struct value * |
849d0ba8 | 733 | readable_regcache::cooked_read_value (int regnum) |
3543a589 TT |
734 | { |
735 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 736 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 737 | |
d999647b | 738 | if (regnum < num_raw_registers () |
849d0ba8 | 739 | || (m_has_pseudo && m_register_status[regnum] != REG_UNKNOWN) |
ef79d9a3 | 740 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
741 | { |
742 | struct value *result; | |
743 | ||
ef79d9a3 | 744 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
745 | VALUE_LVAL (result) = lval_register; |
746 | VALUE_REGNUM (result) = regnum; | |
747 | ||
748 | /* It is more efficient in general to do this delegation in this | |
749 | direction than in the other one, even though the value-based | |
750 | API is preferred. */ | |
ef79d9a3 YQ |
751 | if (cooked_read (regnum, |
752 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
753 | mark_value_bytes_unavailable (result, 0, |
754 | TYPE_LENGTH (value_type (result))); | |
755 | ||
756 | return result; | |
757 | } | |
758 | else | |
ef79d9a3 YQ |
759 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
760 | this, regnum); | |
3543a589 TT |
761 | } |
762 | ||
05d1431c | 763 | enum register_status |
a378f419 AC |
764 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
765 | LONGEST *val) | |
ef79d9a3 YQ |
766 | { |
767 | gdb_assert (regcache != NULL); | |
6f98355c | 768 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
769 | } |
770 | ||
6f98355c | 771 | template<typename T, typename> |
ef79d9a3 | 772 | enum register_status |
849d0ba8 | 773 | readable_regcache::cooked_read (int regnum, T *val) |
a378f419 | 774 | { |
05d1431c | 775 | enum register_status status; |
2d522557 | 776 | gdb_byte *buf; |
123f5f96 | 777 | |
ef79d9a3 YQ |
778 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
779 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
780 | status = cooked_read (regnum, buf); | |
05d1431c | 781 | if (status == REG_VALID) |
6f98355c YQ |
782 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
783 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
784 | else |
785 | *val = 0; | |
786 | return status; | |
a378f419 AC |
787 | } |
788 | ||
05d1431c | 789 | enum register_status |
a378f419 AC |
790 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
791 | ULONGEST *val) | |
ef79d9a3 YQ |
792 | { |
793 | gdb_assert (regcache != NULL); | |
6f98355c | 794 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
795 | } |
796 | ||
a66a9c23 AC |
797 | void |
798 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
799 | LONGEST val) | |
ef79d9a3 YQ |
800 | { |
801 | gdb_assert (regcache != NULL); | |
6f98355c | 802 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
803 | } |
804 | ||
6f98355c | 805 | template<typename T, typename> |
ef79d9a3 | 806 | void |
6f98355c | 807 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 808 | { |
7c543f7b | 809 | gdb_byte *buf; |
123f5f96 | 810 | |
ef79d9a3 YQ |
811 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
812 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
813 | store_integer (buf, m_descr->sizeof_register[regnum], |
814 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 815 | cooked_write (regnum, buf); |
a66a9c23 AC |
816 | } |
817 | ||
818 | void | |
819 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
820 | ULONGEST val) | |
ef79d9a3 YQ |
821 | { |
822 | gdb_assert (regcache != NULL); | |
6f98355c | 823 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
824 | } |
825 | ||
ef79d9a3 YQ |
826 | void |
827 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 828 | { |
594f7785 | 829 | |
ef79d9a3 | 830 | gdb_assert (buf != NULL); |
4e888c28 | 831 | assert_regnum (regnum); |
3fadccb3 | 832 | |
3fadccb3 AC |
833 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
834 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 835 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
836 | return; |
837 | ||
3fadccb3 | 838 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 839 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
840 | if (get_register_status (regnum) == REG_VALID |
841 | && (memcmp (register_buffer (regnum), buf, | |
842 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
843 | return; |
844 | ||
ef79d9a3 | 845 | target_prepare_to_store (this); |
c8ec2f33 | 846 | raw_supply (regnum, buf); |
b94ade42 | 847 | |
b292235f TT |
848 | /* Invalidate the register after it is written, in case of a |
849 | failure. */ | |
311dc83a TT |
850 | auto invalidator |
851 | = make_scope_exit ([&] { this->invalidate (regnum); }); | |
b94ade42 | 852 | |
ef79d9a3 | 853 | target_store_registers (this, regnum); |
594f7785 | 854 | |
b292235f TT |
855 | /* The target did not throw an error so we can discard invalidating |
856 | the register. */ | |
857 | invalidator.release (); | |
61a0eb5b AC |
858 | } |
859 | ||
ef79d9a3 YQ |
860 | void |
861 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 862 | { |
d138e37a | 863 | gdb_assert (regnum >= 0); |
ef79d9a3 | 864 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 865 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 866 | raw_write (regnum, buf); |
d138e37a | 867 | else |
ef79d9a3 | 868 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 869 | regnum, buf); |
61a0eb5b AC |
870 | } |
871 | ||
33bab475 | 872 | /* See regcache.h. */ |
06c0b04e | 873 | |
ef79d9a3 | 874 | enum register_status |
33bab475 AH |
875 | readable_regcache::read_part (int regnum, int offset, int len, |
876 | gdb_byte *out, bool is_raw) | |
849d0ba8 | 877 | { |
33bab475 AH |
878 | int reg_size = register_size (arch (), regnum); |
879 | ||
880 | gdb_assert (out != NULL); | |
8e7767e3 AH |
881 | gdb_assert (offset >= 0 && offset <= reg_size); |
882 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
883 | |
884 | if (offset == 0 && len == 0) | |
885 | { | |
886 | /* Nothing to do. */ | |
887 | return REG_VALID; | |
888 | } | |
889 | ||
890 | if (offset == 0 && len == reg_size) | |
891 | { | |
892 | /* Read the full register. */ | |
893 | return (is_raw) ? raw_read (regnum, out) : cooked_read (regnum, out); | |
894 | } | |
849d0ba8 | 895 | |
849d0ba8 | 896 | enum register_status status; |
33bab475 | 897 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); |
849d0ba8 | 898 | |
33bab475 AH |
899 | /* Read full register to buffer. */ |
900 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
849d0ba8 YQ |
901 | if (status != REG_VALID) |
902 | return status; | |
903 | ||
33bab475 AH |
904 | /* Copy out. */ |
905 | memcpy (out, reg + offset, len); | |
849d0ba8 YQ |
906 | return REG_VALID; |
907 | } | |
908 | ||
33bab475 AH |
909 | /* See regcache.h. */ |
910 | ||
8e7767e3 AH |
911 | void |
912 | reg_buffer::raw_collect_part (int regnum, int offset, int len, | |
913 | gdb_byte *out) const | |
914 | { | |
915 | int reg_size = register_size (arch (), regnum); | |
916 | ||
917 | gdb_assert (out != nullptr); | |
918 | gdb_assert (offset >= 0 && offset <= reg_size); | |
919 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
920 | ||
921 | if (offset == 0 && len == 0) | |
922 | { | |
923 | /* Nothing to do. */ | |
924 | return; | |
925 | } | |
926 | ||
927 | if (offset == 0 && len == reg_size) | |
928 | { | |
929 | /* Collect the full register. */ | |
930 | return raw_collect (regnum, out); | |
931 | } | |
932 | ||
933 | /* Read to buffer, then write out. */ | |
934 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
935 | raw_collect (regnum, reg); | |
936 | memcpy (out, reg + offset, len); | |
937 | } | |
938 | ||
939 | /* See regcache.h. */ | |
940 | ||
849d0ba8 YQ |
941 | enum register_status |
942 | regcache::write_part (int regnum, int offset, int len, | |
33bab475 | 943 | const gdb_byte *in, bool is_raw) |
ef79d9a3 | 944 | { |
33bab475 | 945 | int reg_size = register_size (arch (), regnum); |
123f5f96 | 946 | |
33bab475 | 947 | gdb_assert (in != NULL); |
8e7767e3 AH |
948 | gdb_assert (offset >= 0 && offset <= reg_size); |
949 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
950 | |
951 | if (offset == 0 && len == 0) | |
06c0b04e | 952 | { |
33bab475 AH |
953 | /* Nothing to do. */ |
954 | return REG_VALID; | |
955 | } | |
05d1431c | 956 | |
33bab475 AH |
957 | if (offset == 0 && len == reg_size) |
958 | { | |
959 | /* Write the full register. */ | |
960 | (is_raw) ? raw_write (regnum, in) : cooked_write (regnum, in); | |
961 | return REG_VALID; | |
06c0b04e | 962 | } |
849d0ba8 | 963 | |
33bab475 AH |
964 | enum register_status status; |
965 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
05d1431c | 966 | |
33bab475 AH |
967 | /* Read existing register to buffer. */ |
968 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
969 | if (status != REG_VALID) | |
970 | return status; | |
971 | ||
972 | /* Update buffer, then write back to regcache. */ | |
973 | memcpy (reg + offset, in, len); | |
974 | is_raw ? raw_write (regnum, reg) : cooked_write (regnum, reg); | |
05d1431c | 975 | return REG_VALID; |
06c0b04e AC |
976 | } |
977 | ||
33bab475 AH |
978 | /* See regcache.h. */ |
979 | ||
8e7767e3 AH |
980 | void |
981 | reg_buffer::raw_supply_part (int regnum, int offset, int len, | |
982 | const gdb_byte *in) | |
983 | { | |
984 | int reg_size = register_size (arch (), regnum); | |
985 | ||
986 | gdb_assert (in != nullptr); | |
987 | gdb_assert (offset >= 0 && offset <= reg_size); | |
988 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
989 | ||
990 | if (offset == 0 && len == 0) | |
991 | { | |
992 | /* Nothing to do. */ | |
993 | return; | |
994 | } | |
995 | ||
996 | if (offset == 0 && len == reg_size) | |
997 | { | |
998 | /* Supply the full register. */ | |
999 | return raw_supply (regnum, in); | |
1000 | } | |
1001 | ||
1002 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
1003 | ||
1004 | /* Read existing value to buffer. */ | |
1005 | raw_collect (regnum, reg); | |
1006 | ||
1007 | /* Write to buffer, then write out. */ | |
1008 | memcpy (reg + offset, in, len); | |
1009 | raw_supply (regnum, reg); | |
1010 | } | |
1011 | ||
ef79d9a3 | 1012 | enum register_status |
33bab475 AH |
1013 | readable_regcache::raw_read_part (int regnum, int offset, int len, |
1014 | gdb_byte *buf) | |
ef79d9a3 | 1015 | { |
4e888c28 | 1016 | assert_regnum (regnum); |
849d0ba8 | 1017 | return read_part (regnum, offset, len, buf, true); |
06c0b04e AC |
1018 | } |
1019 | ||
4f0420fd | 1020 | /* See regcache.h. */ |
123f5f96 | 1021 | |
ef79d9a3 YQ |
1022 | void |
1023 | regcache::raw_write_part (int regnum, int offset, int len, | |
1024 | const gdb_byte *buf) | |
1025 | { | |
4e888c28 | 1026 | assert_regnum (regnum); |
849d0ba8 | 1027 | write_part (regnum, offset, len, buf, true); |
06c0b04e AC |
1028 | } |
1029 | ||
33bab475 AH |
1030 | /* See regcache.h. */ |
1031 | ||
ef79d9a3 | 1032 | enum register_status |
849d0ba8 YQ |
1033 | readable_regcache::cooked_read_part (int regnum, int offset, int len, |
1034 | gdb_byte *buf) | |
ef79d9a3 YQ |
1035 | { |
1036 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 1037 | return read_part (regnum, offset, len, buf, false); |
06c0b04e AC |
1038 | } |
1039 | ||
33bab475 AH |
1040 | /* See regcache.h. */ |
1041 | ||
ef79d9a3 YQ |
1042 | void |
1043 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1044 | const gdb_byte *buf) | |
1045 | { | |
1046 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 1047 | write_part (regnum, offset, len, buf, false); |
06c0b04e | 1048 | } |
32178cab | 1049 | |
268a13a5 | 1050 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1051 | |
ef79d9a3 | 1052 | void |
9c861883 | 1053 | reg_buffer::raw_supply (int regnum, const void *buf) |
9a661b68 MK |
1054 | { |
1055 | void *regbuf; | |
1056 | size_t size; | |
1057 | ||
4e888c28 | 1058 | assert_regnum (regnum); |
9a661b68 | 1059 | |
ef79d9a3 YQ |
1060 | regbuf = register_buffer (regnum); |
1061 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1062 | |
1063 | if (buf) | |
ee99023e PA |
1064 | { |
1065 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1066 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1067 | } |
9a661b68 | 1068 | else |
ee99023e PA |
1069 | { |
1070 | /* This memset not strictly necessary, but better than garbage | |
1071 | in case the register value manages to escape somewhere (due | |
1072 | to a bug, no less). */ | |
1073 | memset (regbuf, 0, size); | |
ef79d9a3 | 1074 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1075 | } |
9a661b68 MK |
1076 | } |
1077 | ||
9c861883 | 1078 | /* See regcache.h. */ |
b057297a AH |
1079 | |
1080 | void | |
9c861883 AH |
1081 | reg_buffer::raw_supply_integer (int regnum, const gdb_byte *addr, |
1082 | int addr_len, bool is_signed) | |
b057297a AH |
1083 | { |
1084 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1085 | gdb_byte *regbuf; | |
1086 | size_t regsize; | |
1087 | ||
4e888c28 | 1088 | assert_regnum (regnum); |
b057297a AH |
1089 | |
1090 | regbuf = register_buffer (regnum); | |
1091 | regsize = m_descr->sizeof_register[regnum]; | |
1092 | ||
1093 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1094 | byte_order); | |
1095 | m_register_status[regnum] = REG_VALID; | |
1096 | } | |
1097 | ||
9c861883 | 1098 | /* See regcache.h. */ |
f81fdd35 AH |
1099 | |
1100 | void | |
9c861883 | 1101 | reg_buffer::raw_supply_zeroed (int regnum) |
f81fdd35 AH |
1102 | { |
1103 | void *regbuf; | |
1104 | size_t size; | |
1105 | ||
4e888c28 | 1106 | assert_regnum (regnum); |
f81fdd35 AH |
1107 | |
1108 | regbuf = register_buffer (regnum); | |
1109 | size = m_descr->sizeof_register[regnum]; | |
1110 | ||
1111 | memset (regbuf, 0, size); | |
1112 | m_register_status[regnum] = REG_VALID; | |
1113 | } | |
1114 | ||
268a13a5 | 1115 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1116 | |
ef79d9a3 | 1117 | void |
9c861883 | 1118 | reg_buffer::raw_collect (int regnum, void *buf) const |
9a661b68 MK |
1119 | { |
1120 | const void *regbuf; | |
1121 | size_t size; | |
1122 | ||
ef79d9a3 | 1123 | gdb_assert (buf != NULL); |
4e888c28 | 1124 | assert_regnum (regnum); |
9a661b68 | 1125 | |
ef79d9a3 YQ |
1126 | regbuf = register_buffer (regnum); |
1127 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1128 | memcpy (buf, regbuf, size); |
1129 | } | |
1130 | ||
9c861883 | 1131 | /* See regcache.h. */ |
b057297a AH |
1132 | |
1133 | void | |
9c861883 AH |
1134 | reg_buffer::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, |
1135 | bool is_signed) const | |
b057297a AH |
1136 | { |
1137 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1138 | const gdb_byte *regbuf; | |
1139 | size_t regsize; | |
1140 | ||
4e888c28 | 1141 | assert_regnum (regnum); |
b057297a AH |
1142 | |
1143 | regbuf = register_buffer (regnum); | |
1144 | regsize = m_descr->sizeof_register[regnum]; | |
1145 | ||
1146 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1147 | byte_order); | |
1148 | } | |
1149 | ||
8e7767e3 AH |
1150 | /* See regcache.h. */ |
1151 | ||
1152 | void | |
1153 | regcache::transfer_regset_register (struct regcache *out_regcache, int regnum, | |
1154 | const gdb_byte *in_buf, gdb_byte *out_buf, | |
1155 | int slot_size, int offs) const | |
1156 | { | |
1157 | struct gdbarch *gdbarch = arch (); | |
1158 | int reg_size = std::min (register_size (gdbarch, regnum), slot_size); | |
1159 | ||
1160 | /* Use part versions and reg_size to prevent possible buffer overflows when | |
1161 | accessing the regcache. */ | |
1162 | ||
1163 | if (out_buf != nullptr) | |
1164 | { | |
1165 | raw_collect_part (regnum, 0, reg_size, out_buf + offs); | |
1166 | ||
1167 | /* Ensure any additional space is cleared. */ | |
1168 | if (slot_size > reg_size) | |
1169 | memset (out_buf + offs + reg_size, 0, slot_size - reg_size); | |
1170 | } | |
1171 | else if (in_buf != nullptr) | |
1172 | out_regcache->raw_supply_part (regnum, 0, reg_size, in_buf + offs); | |
1173 | else | |
1174 | { | |
1175 | /* Invalidate the register. */ | |
1176 | out_regcache->raw_supply (regnum, nullptr); | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | /* See regcache.h. */ | |
9c861883 | 1181 | |
ef79d9a3 YQ |
1182 | void |
1183 | regcache::transfer_regset (const struct regset *regset, | |
1184 | struct regcache *out_regcache, | |
8e7767e3 AH |
1185 | int regnum, const gdb_byte *in_buf, |
1186 | gdb_byte *out_buf, size_t size) const | |
0b309272 AA |
1187 | { |
1188 | const struct regcache_map_entry *map; | |
1189 | int offs = 0, count; | |
1190 | ||
19ba03f4 SM |
1191 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1192 | (count = map->count) != 0; | |
1193 | map++) | |
0b309272 AA |
1194 | { |
1195 | int regno = map->regno; | |
1196 | int slot_size = map->size; | |
1197 | ||
1198 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1199 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1200 | |
1201 | if (regno == REGCACHE_MAP_SKIP | |
1202 | || (regnum != -1 | |
1203 | && (regnum < regno || regnum >= regno + count))) | |
1204 | offs += count * slot_size; | |
1205 | ||
1206 | else if (regnum == -1) | |
1207 | for (; count--; regno++, offs += slot_size) | |
1208 | { | |
1209 | if (offs + slot_size > size) | |
1210 | break; | |
1211 | ||
8e7767e3 AH |
1212 | transfer_regset_register (out_regcache, regno, in_buf, out_buf, |
1213 | slot_size, offs); | |
0b309272 AA |
1214 | } |
1215 | else | |
1216 | { | |
1217 | /* Transfer a single register and return. */ | |
1218 | offs += (regnum - regno) * slot_size; | |
1219 | if (offs + slot_size > size) | |
1220 | return; | |
1221 | ||
8e7767e3 AH |
1222 | transfer_regset_register (out_regcache, regnum, in_buf, out_buf, |
1223 | slot_size, offs); | |
0b309272 AA |
1224 | return; |
1225 | } | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1230 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1231 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1232 | ||
1233 | void | |
1234 | regcache_supply_regset (const struct regset *regset, | |
1235 | struct regcache *regcache, | |
1236 | int regnum, const void *buf, size_t size) | |
1237 | { | |
8e7767e3 | 1238 | regcache->supply_regset (regset, regnum, (const gdb_byte *) buf, size); |
ef79d9a3 YQ |
1239 | } |
1240 | ||
1241 | void | |
1242 | regcache::supply_regset (const struct regset *regset, | |
1243 | int regnum, const void *buf, size_t size) | |
1244 | { | |
8e7767e3 | 1245 | transfer_regset (regset, this, regnum, (const gdb_byte *) buf, nullptr, size); |
0b309272 AA |
1246 | } |
1247 | ||
1248 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1249 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1250 | REGSET. */ | |
1251 | ||
1252 | void | |
1253 | regcache_collect_regset (const struct regset *regset, | |
1254 | const struct regcache *regcache, | |
1255 | int regnum, void *buf, size_t size) | |
1256 | { | |
8e7767e3 | 1257 | regcache->collect_regset (regset, regnum, (gdb_byte *) buf, size); |
ef79d9a3 YQ |
1258 | } |
1259 | ||
1260 | void | |
1261 | regcache::collect_regset (const struct regset *regset, | |
1262 | int regnum, void *buf, size_t size) const | |
1263 | { | |
8e7767e3 | 1264 | transfer_regset (regset, nullptr, regnum, nullptr, (gdb_byte *) buf, size); |
0b309272 AA |
1265 | } |
1266 | ||
268a13a5 | 1267 | /* See gdbsupport/common-regcache.h. */ |
f868386e AH |
1268 | |
1269 | bool | |
1270 | reg_buffer::raw_compare (int regnum, const void *buf, int offset) const | |
1271 | { | |
1272 | gdb_assert (buf != NULL); | |
1273 | assert_regnum (regnum); | |
1274 | ||
1275 | const char *regbuf = (const char *) register_buffer (regnum); | |
1276 | size_t size = m_descr->sizeof_register[regnum]; | |
1277 | gdb_assert (size >= offset); | |
1278 | ||
1279 | return (memcmp (buf, regbuf + offset, size - offset) == 0); | |
1280 | } | |
193cb69f | 1281 | |
515630c5 | 1282 | /* Special handling for register PC. */ |
32178cab MS |
1283 | |
1284 | CORE_ADDR | |
515630c5 | 1285 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1286 | { |
ac7936df | 1287 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1288 | |
32178cab MS |
1289 | CORE_ADDR pc_val; |
1290 | ||
61a1198a UW |
1291 | if (gdbarch_read_pc_p (gdbarch)) |
1292 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1293 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1294 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1295 | { |
61a1198a | 1296 | ULONGEST raw_val; |
123f5f96 | 1297 | |
05d1431c PA |
1298 | if (regcache_cooked_read_unsigned (regcache, |
1299 | gdbarch_pc_regnum (gdbarch), | |
1300 | &raw_val) == REG_UNAVAILABLE) | |
1301 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1302 | ||
214e098a | 1303 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1304 | } |
1305 | else | |
515630c5 UW |
1306 | internal_error (__FILE__, __LINE__, |
1307 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1308 | return pc_val; |
1309 | } | |
1310 | ||
fc75c28b TBA |
1311 | /* See gdbsupport/common-regcache.h. */ |
1312 | ||
1313 | CORE_ADDR | |
1314 | regcache_read_pc_protected (regcache *regcache) | |
1315 | { | |
1316 | CORE_ADDR pc; | |
1317 | try | |
1318 | { | |
1319 | pc = regcache_read_pc (regcache); | |
1320 | } | |
1321 | catch (const gdb_exception_error &ex) | |
1322 | { | |
1323 | pc = 0; | |
1324 | } | |
1325 | ||
1326 | return pc; | |
1327 | } | |
1328 | ||
32178cab | 1329 | void |
515630c5 | 1330 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1331 | { |
ac7936df | 1332 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1333 | |
61a1198a UW |
1334 | if (gdbarch_write_pc_p (gdbarch)) |
1335 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1336 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1337 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1338 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1339 | else |
1340 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1341 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1342 | |
1343 | /* Writing the PC (for instance, from "load") invalidates the | |
1344 | current frame. */ | |
1345 | reinit_frame_cache (); | |
32178cab MS |
1346 | } |
1347 | ||
d999647b | 1348 | int |
31716595 | 1349 | reg_buffer::num_raw_registers () const |
d999647b YQ |
1350 | { |
1351 | return gdbarch_num_regs (arch ()); | |
1352 | } | |
1353 | ||
ed771251 | 1354 | void |
ef79d9a3 | 1355 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1356 | { |
ef79d9a3 | 1357 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1358 | |
1359 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1360 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1361 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1362 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1363 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1364 | gdbarch_register_name (gdbarch, regno)); | |
1365 | else | |
1366 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1367 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1368 | { | |
1369 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1370 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1371 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1372 | |
1373 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1374 | for (int i = 0; i < size; i++) | |
1375 | { | |
1376 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1377 | } | |
1378 | if (size <= sizeof (LONGEST)) | |
1379 | { | |
1380 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1381 | ||
1382 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1383 | core_addr_to_string_nz (val), plongest (val)); | |
1384 | } | |
1385 | } | |
1386 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1387 | } | |
32178cab | 1388 | |
50a5f187 AB |
1389 | /* Implement 'maint flush register-cache' command. */ |
1390 | ||
705152c5 | 1391 | static void |
0b39b52e | 1392 | reg_flush_command (const char *command, int from_tty) |
705152c5 MS |
1393 | { |
1394 | /* Force-flush the register cache. */ | |
1395 | registers_changed (); | |
1396 | if (from_tty) | |
a3f17187 | 1397 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1398 | } |
1399 | ||
4c74fe6b YQ |
1400 | void |
1401 | register_dump::dump (ui_file *file) | |
af030b9a | 1402 | { |
4c74fe6b YQ |
1403 | auto descr = regcache_descr (m_gdbarch); |
1404 | int regnum; | |
1405 | int footnote_nr = 0; | |
1406 | int footnote_register_offset = 0; | |
1407 | int footnote_register_type_name_null = 0; | |
1408 | long register_offset = 0; | |
af030b9a | 1409 | |
4c74fe6b | 1410 | gdb_assert (descr->nr_cooked_registers |
f6efe3f8 | 1411 | == gdbarch_num_cooked_regs (m_gdbarch)); |
af030b9a | 1412 | |
4c74fe6b YQ |
1413 | for (regnum = -1; regnum < descr->nr_cooked_registers; regnum++) |
1414 | { | |
1415 | /* Name. */ | |
1416 | if (regnum < 0) | |
1417 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1418 | else | |
1419 | { | |
1420 | const char *p = gdbarch_register_name (m_gdbarch, regnum); | |
123f5f96 | 1421 | |
4c74fe6b YQ |
1422 | if (p == NULL) |
1423 | p = ""; | |
1424 | else if (p[0] == '\0') | |
1425 | p = "''"; | |
1426 | fprintf_unfiltered (file, " %-10s", p); | |
1427 | } | |
af030b9a | 1428 | |
4c74fe6b YQ |
1429 | /* Number. */ |
1430 | if (regnum < 0) | |
1431 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1432 | else | |
1433 | fprintf_unfiltered (file, " %4d", regnum); | |
af030b9a | 1434 | |
4c74fe6b YQ |
1435 | /* Relative number. */ |
1436 | if (regnum < 0) | |
1437 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1438 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
1439 | fprintf_unfiltered (file, " %4d", regnum); | |
1440 | else | |
1441 | fprintf_unfiltered (file, " %4d", | |
1442 | (regnum - gdbarch_num_regs (m_gdbarch))); | |
af030b9a | 1443 | |
4c74fe6b YQ |
1444 | /* Offset. */ |
1445 | if (regnum < 0) | |
1446 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1447 | else | |
af030b9a | 1448 | { |
4c74fe6b YQ |
1449 | fprintf_unfiltered (file, " %6ld", |
1450 | descr->register_offset[regnum]); | |
1451 | if (register_offset != descr->register_offset[regnum] | |
1452 | || (regnum > 0 | |
1453 | && (descr->register_offset[regnum] | |
1454 | != (descr->register_offset[regnum - 1] | |
1455 | + descr->sizeof_register[regnum - 1]))) | |
1456 | ) | |
af030b9a | 1457 | { |
4c74fe6b YQ |
1458 | if (!footnote_register_offset) |
1459 | footnote_register_offset = ++footnote_nr; | |
1460 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
af030b9a | 1461 | } |
4c74fe6b YQ |
1462 | else |
1463 | fprintf_unfiltered (file, " "); | |
1464 | register_offset = (descr->register_offset[regnum] | |
1465 | + descr->sizeof_register[regnum]); | |
af030b9a AC |
1466 | } |
1467 | ||
4c74fe6b YQ |
1468 | /* Size. */ |
1469 | if (regnum < 0) | |
1470 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1471 | else | |
1472 | fprintf_unfiltered (file, " %5ld", descr->sizeof_register[regnum]); | |
f3384e66 | 1473 | |
4c74fe6b | 1474 | /* Type. */ |
f3384e66 | 1475 | { |
4c74fe6b YQ |
1476 | const char *t; |
1477 | std::string name_holder; | |
b59ff9d5 | 1478 | |
4c74fe6b YQ |
1479 | if (regnum < 0) |
1480 | t = "Type"; | |
215c69dc YQ |
1481 | else |
1482 | { | |
4c74fe6b | 1483 | static const char blt[] = "builtin_type"; |
123f5f96 | 1484 | |
7d93a1e0 | 1485 | t = register_type (m_gdbarch, regnum)->name (); |
4c74fe6b | 1486 | if (t == NULL) |
f3384e66 | 1487 | { |
4c74fe6b YQ |
1488 | if (!footnote_register_type_name_null) |
1489 | footnote_register_type_name_null = ++footnote_nr; | |
1490 | name_holder = string_printf ("*%d", | |
1491 | footnote_register_type_name_null); | |
1492 | t = name_holder.c_str (); | |
f3384e66 | 1493 | } |
4c74fe6b YQ |
1494 | /* Chop a leading builtin_type. */ |
1495 | if (startswith (t, blt)) | |
1496 | t += strlen (blt); | |
f3384e66 | 1497 | } |
4c74fe6b | 1498 | fprintf_unfiltered (file, " %-15s", t); |
f3384e66 | 1499 | } |
f3384e66 | 1500 | |
4c74fe6b YQ |
1501 | /* Leading space always present. */ |
1502 | fprintf_unfiltered (file, " "); | |
af030b9a | 1503 | |
4c74fe6b | 1504 | dump_reg (file, regnum); |
ed4227b7 | 1505 | |
4c74fe6b | 1506 | fprintf_unfiltered (file, "\n"); |
ed4227b7 PA |
1507 | } |
1508 | ||
4c74fe6b YQ |
1509 | if (footnote_register_offset) |
1510 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1511 | footnote_register_offset); | |
1512 | if (footnote_register_type_name_null) | |
1513 | fprintf_unfiltered (file, | |
1514 | "*%d: Register type's name NULL.\n", | |
1515 | footnote_register_type_name_null); | |
c21236dc PA |
1516 | } |
1517 | ||
8248946c | 1518 | #if GDB_SELF_TEST |
268a13a5 | 1519 | #include "gdbsupport/selftest.h" |
1b30aaa5 | 1520 | #include "selftest-arch.h" |
ec7a5fcb | 1521 | #include "target-float.h" |
8248946c YQ |
1522 | |
1523 | namespace selftests { | |
1524 | ||
159ed7d9 SM |
1525 | static size_t |
1526 | regcaches_size () | |
8248946c | 1527 | { |
888bdb2b | 1528 | size_t size = 0; |
b70e516e SM |
1529 | |
1530 | for (auto pid_ptid_regc_map_it = regcaches.cbegin (); | |
1531 | pid_ptid_regc_map_it != regcaches.cend (); | |
1532 | ++pid_ptid_regc_map_it) | |
888bdb2b | 1533 | { |
b70e516e SM |
1534 | const pid_ptid_regcache_map &pid_ptid_regc_map |
1535 | = pid_ptid_regc_map_it->second; | |
1536 | ||
1537 | for (auto ptid_regc_map_it = pid_ptid_regc_map.cbegin (); | |
1538 | ptid_regc_map_it != pid_ptid_regc_map.cend (); | |
1539 | ++ptid_regc_map_it) | |
1540 | { | |
1541 | const ptid_regcache_map &ptid_regc_map | |
1542 | = ptid_regc_map_it->second; | |
1543 | ||
1544 | size += ptid_regc_map.size (); | |
1545 | } | |
888bdb2b SM |
1546 | } |
1547 | ||
1548 | return size; | |
159ed7d9 | 1549 | } |
8248946c | 1550 | |
cdd9148a SM |
1551 | /* Return the count of regcaches for (TARGET, PTID) in REGCACHES. */ |
1552 | ||
1553 | static int | |
1554 | regcache_count (process_stratum_target *target, ptid_t ptid) | |
1555 | { | |
b70e516e SM |
1556 | /* Look up map for target. */ |
1557 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
1558 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
cdd9148a | 1559 | { |
b70e516e | 1560 | pid_ptid_regcache_map &pid_ptid_regc_map = pid_ptid_regc_map_it->second; |
cdd9148a | 1561 | |
b70e516e SM |
1562 | /* Look map for pid. */ |
1563 | auto ptid_regc_map_it = pid_ptid_regc_map.find (ptid.pid ()); | |
1564 | if (ptid_regc_map_it != pid_ptid_regc_map.end ()) | |
1565 | { | |
1566 | ptid_regcache_map &ptid_regc_map = ptid_regc_map_it->second; | |
1567 | auto range = ptid_regc_map.equal_range (ptid); | |
1568 | ||
1569 | return std::distance (range.first, range.second); | |
1570 | } | |
cdd9148a SM |
1571 | } |
1572 | ||
1573 | return 0; | |
1574 | }; | |
1575 | ||
5b6d1e4f PA |
1576 | /* Wrapper around get_thread_arch_aspace_regcache that does some self checks. */ |
1577 | ||
1578 | static void | |
dd125343 SM |
1579 | get_thread_arch_aspace_regcache_and_check (process_stratum_target *target, |
1580 | ptid_t ptid) | |
5b6d1e4f | 1581 | { |
dd125343 SM |
1582 | /* We currently only test with a single gdbarch. Any gdbarch will do, so use |
1583 | the current inferior's gdbarch. Also use the current inferior's address | |
1584 | space. */ | |
1585 | gdbarch *arch = current_inferior ()->gdbarch; | |
1586 | address_space *aspace = current_inferior ()->aspace; | |
1587 | regcache *regcache | |
1588 | = get_thread_arch_aspace_regcache (target, ptid, arch, aspace); | |
1589 | ||
5b6d1e4f PA |
1590 | SELF_CHECK (regcache != NULL); |
1591 | SELF_CHECK (regcache->target () == target); | |
1592 | SELF_CHECK (regcache->ptid () == ptid); | |
dd125343 | 1593 | SELF_CHECK (regcache->arch () == arch); |
5b6d1e4f PA |
1594 | SELF_CHECK (regcache->aspace () == aspace); |
1595 | } | |
1596 | ||
cdd9148a SM |
1597 | /* The data that the regcaches selftests must hold onto for the duration of the |
1598 | test. */ | |
1599 | ||
1600 | struct regcache_test_data | |
8248946c | 1601 | { |
cdd9148a SM |
1602 | regcache_test_data () |
1603 | { | |
1604 | /* Ensure the regcaches container is empty at the start. */ | |
1605 | registers_changed (); | |
1606 | } | |
8248946c | 1607 | |
cdd9148a SM |
1608 | ~regcache_test_data () |
1609 | { | |
1610 | /* Make sure to leave the global regcaches container empty. */ | |
1611 | registers_changed (); | |
1612 | } | |
8248946c | 1613 | |
5b6d1e4f PA |
1614 | test_target_ops test_target1; |
1615 | test_target_ops test_target2; | |
cdd9148a SM |
1616 | }; |
1617 | ||
1618 | using regcache_test_data_up = std::unique_ptr<regcache_test_data>; | |
1619 | ||
1620 | /* Set up a few regcaches from two different targets, for use in | |
1621 | regcache-management tests. | |
1622 | ||
1623 | Return a pointer, because the `regcache_test_data` type is not moveable. */ | |
1624 | ||
1625 | static regcache_test_data_up | |
1626 | populate_regcaches_for_test () | |
1627 | { | |
1628 | regcache_test_data_up data (new regcache_test_data); | |
1629 | size_t expected_regcache_size = 0; | |
1630 | ||
1631 | SELF_CHECK (regcaches_size () == 0); | |
1632 | ||
1633 | /* Populate the regcache container with a few regcaches for the two test | |
1634 | targets. */ | |
1635 | for (int pid : { 1, 2 }) | |
1636 | { | |
1637 | for (long lwp : { 1, 2, 3 }) | |
1638 | { | |
1639 | get_thread_arch_aspace_regcache_and_check | |
1640 | (&data->test_target1, ptid_t (pid, lwp)); | |
1641 | expected_regcache_size++; | |
1642 | SELF_CHECK (regcaches_size () == expected_regcache_size); | |
1643 | ||
1644 | get_thread_arch_aspace_regcache_and_check | |
1645 | (&data->test_target2, ptid_t (pid, lwp)); | |
1646 | expected_regcache_size++; | |
1647 | SELF_CHECK (regcaches_size () == expected_regcache_size); | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | return data; | |
1652 | } | |
1653 | ||
1654 | static void | |
1655 | get_thread_arch_aspace_regcache_test () | |
1656 | { | |
1657 | /* populate_regcaches_for_test already tests most of the | |
1658 | get_thread_arch_aspace_regcache functionality. */ | |
1659 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1660 | size_t regcaches_size_before = regcaches_size (); | |
1661 | ||
1662 | /* Test that getting an existing regcache doesn't create a new one. */ | |
1663 | get_thread_arch_aspace_regcache_and_check (&data->test_target1, ptid_t (2, 2)); | |
1664 | SELF_CHECK (regcaches_size () == regcaches_size_before); | |
1665 | } | |
1666 | ||
1667 | /* Test marking all regcaches of all targets as changed. */ | |
1668 | ||
1669 | static void | |
1670 | registers_changed_ptid_all_test () | |
1671 | { | |
1672 | regcache_test_data_up data = populate_regcaches_for_test (); | |
8248946c | 1673 | |
5b6d1e4f | 1674 | registers_changed_ptid (nullptr, minus_one_ptid); |
159ed7d9 | 1675 | SELF_CHECK (regcaches_size () == 0); |
cdd9148a | 1676 | } |
3ee93972 | 1677 | |
cdd9148a SM |
1678 | /* Test marking regcaches of a specific target as changed. */ |
1679 | ||
1680 | static void | |
1681 | registers_changed_ptid_target_test () | |
1682 | { | |
1683 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1684 | ||
1685 | registers_changed_ptid (&data->test_target1, minus_one_ptid); | |
1686 | SELF_CHECK (regcaches_size () == 6); | |
1687 | ||
1688 | /* Check that we deleted the regcache for the right target. */ | |
1689 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1690 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
1691 | } | |
1692 | ||
b70e516e SM |
1693 | /* Test marking regcaches of a specific (target, pid) as changed. */ |
1694 | ||
1695 | static void | |
1696 | registers_changed_ptid_target_pid_test () | |
1697 | { | |
1698 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1699 | ||
1700 | registers_changed_ptid (&data->test_target1, ptid_t (2)); | |
1701 | SELF_CHECK (regcaches_size () == 9); | |
1702 | ||
1703 | /* Regcaches from target1 should not exist, while regcaches from target2 | |
1704 | should exist. */ | |
1705 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1706 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
1707 | } | |
1708 | ||
cdd9148a SM |
1709 | /* Test marking regcaches of a specific (target, ptid) as changed. */ |
1710 | ||
1711 | static void | |
1712 | registers_changed_ptid_target_ptid_test () | |
1713 | { | |
1714 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1715 | ||
1716 | registers_changed_ptid (&data->test_target1, ptid_t (2, 2)); | |
1717 | SELF_CHECK (regcaches_size () == 11); | |
1718 | ||
1719 | /* Check that we deleted the regcache for the right target. */ | |
1720 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1721 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
8248946c YQ |
1722 | } |
1723 | ||
1b30aaa5 YQ |
1724 | class target_ops_no_register : public test_target_ops |
1725 | { | |
1726 | public: | |
1727 | target_ops_no_register () | |
1728 | : test_target_ops {} | |
f6ac5f3d | 1729 | {} |
1b30aaa5 YQ |
1730 | |
1731 | void reset () | |
1732 | { | |
1733 | fetch_registers_called = 0; | |
1734 | store_registers_called = 0; | |
1735 | xfer_partial_called = 0; | |
1736 | } | |
1737 | ||
f6ac5f3d PA |
1738 | void fetch_registers (regcache *regs, int regno) override; |
1739 | void store_registers (regcache *regs, int regno) override; | |
1740 | ||
1741 | enum target_xfer_status xfer_partial (enum target_object object, | |
1742 | const char *annex, gdb_byte *readbuf, | |
1743 | const gdb_byte *writebuf, | |
1744 | ULONGEST offset, ULONGEST len, | |
1745 | ULONGEST *xfered_len) override; | |
1746 | ||
1b30aaa5 YQ |
1747 | unsigned int fetch_registers_called = 0; |
1748 | unsigned int store_registers_called = 0; | |
1749 | unsigned int xfer_partial_called = 0; | |
1750 | }; | |
1751 | ||
f6ac5f3d PA |
1752 | void |
1753 | target_ops_no_register::fetch_registers (regcache *regs, int regno) | |
1b30aaa5 | 1754 | { |
1b30aaa5 YQ |
1755 | /* Mark register available. */ |
1756 | regs->raw_supply_zeroed (regno); | |
f6ac5f3d | 1757 | this->fetch_registers_called++; |
1b30aaa5 YQ |
1758 | } |
1759 | ||
f6ac5f3d PA |
1760 | void |
1761 | target_ops_no_register::store_registers (regcache *regs, int regno) | |
1b30aaa5 | 1762 | { |
f6ac5f3d | 1763 | this->store_registers_called++; |
1b30aaa5 YQ |
1764 | } |
1765 | ||
f6ac5f3d PA |
1766 | enum target_xfer_status |
1767 | target_ops_no_register::xfer_partial (enum target_object object, | |
1768 | const char *annex, gdb_byte *readbuf, | |
1769 | const gdb_byte *writebuf, | |
1770 | ULONGEST offset, ULONGEST len, | |
1771 | ULONGEST *xfered_len) | |
1b30aaa5 | 1772 | { |
f6ac5f3d | 1773 | this->xfer_partial_called++; |
1b30aaa5 YQ |
1774 | |
1775 | *xfered_len = len; | |
1776 | return TARGET_XFER_OK; | |
1777 | } | |
1778 | ||
1779 | class readwrite_regcache : public regcache | |
1780 | { | |
1781 | public: | |
5b6d1e4f PA |
1782 | readwrite_regcache (process_stratum_target *target, |
1783 | struct gdbarch *gdbarch) | |
1784 | : regcache (target, gdbarch, nullptr) | |
1b30aaa5 YQ |
1785 | {} |
1786 | }; | |
1787 | ||
1788 | /* Test regcache::cooked_read gets registers from raw registers and | |
1789 | memory instead of target to_{fetch,store}_registers. */ | |
1790 | ||
1791 | static void | |
1792 | cooked_read_test (struct gdbarch *gdbarch) | |
1793 | { | |
236ef034 | 1794 | scoped_mock_context<target_ops_no_register> mockctx (gdbarch); |
1b30aaa5 YQ |
1795 | |
1796 | /* Test that read one raw register from regcache_no_target will go | |
1797 | to the target layer. */ | |
1b30aaa5 YQ |
1798 | |
1799 | /* Find a raw register which size isn't zero. */ | |
b926417a TT |
1800 | int nonzero_regnum; |
1801 | for (nonzero_regnum = 0; | |
1802 | nonzero_regnum < gdbarch_num_regs (gdbarch); | |
1803 | nonzero_regnum++) | |
1b30aaa5 | 1804 | { |
b926417a | 1805 | if (register_size (gdbarch, nonzero_regnum) != 0) |
1b30aaa5 YQ |
1806 | break; |
1807 | } | |
1808 | ||
236ef034 | 1809 | readwrite_regcache readwrite (&mockctx.mock_target, gdbarch); |
b926417a | 1810 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, nonzero_regnum)); |
1b30aaa5 | 1811 | |
b926417a | 1812 | readwrite.raw_read (nonzero_regnum, buf.data ()); |
1b30aaa5 YQ |
1813 | |
1814 | /* raw_read calls target_fetch_registers. */ | |
236ef034 PA |
1815 | SELF_CHECK (mockctx.mock_target.fetch_registers_called > 0); |
1816 | mockctx.mock_target.reset (); | |
1b30aaa5 YQ |
1817 | |
1818 | /* Mark all raw registers valid, so the following raw registers | |
1819 | accesses won't go to target. */ | |
1820 | for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
1821 | readwrite.raw_update (i); | |
1822 | ||
236ef034 | 1823 | mockctx.mock_target.reset (); |
1b30aaa5 YQ |
1824 | /* Then, read all raw and pseudo registers, and don't expect calling |
1825 | to_{fetch,store}_registers. */ | |
f6efe3f8 | 1826 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
1b30aaa5 YQ |
1827 | { |
1828 | if (register_size (gdbarch, regnum) == 0) | |
1829 | continue; | |
1830 | ||
b926417a | 1831 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
1b30aaa5 | 1832 | |
b926417a TT |
1833 | SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum, |
1834 | inner_buf.data ())); | |
1b30aaa5 | 1835 | |
236ef034 PA |
1836 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1837 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1838 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
1b30aaa5 | 1839 | |
236ef034 | 1840 | mockctx.mock_target.reset (); |
1b30aaa5 | 1841 | } |
a63f2d2f | 1842 | |
215c69dc | 1843 | readonly_detached_regcache readonly (readwrite); |
a63f2d2f YQ |
1844 | |
1845 | /* GDB may go to target layer to fetch all registers and memory for | |
1846 | readonly regcache. */ | |
236ef034 | 1847 | mockctx.mock_target.reset (); |
a63f2d2f | 1848 | |
f6efe3f8 | 1849 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
a63f2d2f | 1850 | { |
a63f2d2f YQ |
1851 | if (register_size (gdbarch, regnum) == 0) |
1852 | continue; | |
1853 | ||
b926417a | 1854 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
a63f2d2f | 1855 | enum register_status status = readonly.cooked_read (regnum, |
b926417a | 1856 | inner_buf.data ()); |
a63f2d2f YQ |
1857 | |
1858 | if (regnum < gdbarch_num_regs (gdbarch)) | |
1859 | { | |
1860 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1861 | ||
1862 | if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 | |
1863 | || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh | |
1864 | || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 | |
1865 | || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep | |
1866 | || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 | |
1867 | || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 | |
ea005f31 | 1868 | || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score |
bea556ab | 1869 | || bfd_arch == bfd_arch_riscv || bfd_arch == bfd_arch_csky) |
a63f2d2f YQ |
1870 | { |
1871 | /* Raw registers. If raw registers are not in save_reggroup, | |
1872 | their status are unknown. */ | |
1873 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1874 | SELF_CHECK (status == REG_VALID); | |
1875 | else | |
1876 | SELF_CHECK (status == REG_UNKNOWN); | |
1877 | } | |
1878 | else | |
1879 | SELF_CHECK (status == REG_VALID); | |
1880 | } | |
1881 | else | |
1882 | { | |
1883 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1884 | SELF_CHECK (status == REG_VALID); | |
1885 | else | |
1886 | { | |
1887 | /* If pseudo registers are not in save_reggroup, some of | |
1888 | them can be computed from saved raw registers, but some | |
1889 | of them are unknown. */ | |
1890 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1891 | ||
1892 | if (bfd_arch == bfd_arch_frv | |
1893 | || bfd_arch == bfd_arch_m32c | |
1894 | || bfd_arch == bfd_arch_mep | |
1895 | || bfd_arch == bfd_arch_sh) | |
1896 | SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); | |
1897 | else if (bfd_arch == bfd_arch_mips | |
1898 | || bfd_arch == bfd_arch_h8300) | |
1899 | SELF_CHECK (status == REG_UNKNOWN); | |
1900 | else | |
1901 | SELF_CHECK (status == REG_VALID); | |
1902 | } | |
1903 | } | |
1904 | ||
236ef034 PA |
1905 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1906 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1907 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
a63f2d2f | 1908 | |
236ef034 | 1909 | mockctx.mock_target.reset (); |
a63f2d2f | 1910 | } |
1b30aaa5 YQ |
1911 | } |
1912 | ||
ec7a5fcb YQ |
1913 | /* Test regcache::cooked_write by writing some expected contents to |
1914 | registers, and checking that contents read from registers and the | |
1915 | expected contents are the same. */ | |
1916 | ||
1917 | static void | |
1918 | cooked_write_test (struct gdbarch *gdbarch) | |
1919 | { | |
1920 | /* Error out if debugging something, because we're going to push the | |
1921 | test target, which would pop any existing target. */ | |
328d42d8 | 1922 | if (current_inferior ()->top_target ()->stratum () >= process_stratum) |
ec7a5fcb YQ |
1923 | error (_("target already pushed")); |
1924 | ||
1925 | /* Create a mock environment. A process_stratum target pushed. */ | |
1926 | ||
1927 | target_ops_no_register mock_target; | |
1928 | ||
1929 | /* Push the process_stratum target so we can mock accessing | |
1930 | registers. */ | |
02980c56 | 1931 | current_inferior ()->push_target (&mock_target); |
ec7a5fcb YQ |
1932 | |
1933 | /* Pop it again on exit (return/exception). */ | |
1934 | struct on_exit | |
1935 | { | |
1936 | ~on_exit () | |
1937 | { | |
1938 | pop_all_targets_at_and_above (process_stratum); | |
1939 | } | |
1940 | } pop_targets; | |
1941 | ||
5b6d1e4f | 1942 | readwrite_regcache readwrite (&mock_target, gdbarch); |
ec7a5fcb | 1943 | |
f6efe3f8 | 1944 | const int num_regs = gdbarch_num_cooked_regs (gdbarch); |
ec7a5fcb YQ |
1945 | |
1946 | for (auto regnum = 0; regnum < num_regs; regnum++) | |
1947 | { | |
1948 | if (register_size (gdbarch, regnum) == 0 | |
1949 | || gdbarch_cannot_store_register (gdbarch, regnum)) | |
1950 | continue; | |
1951 | ||
1952 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1953 | ||
abf516c6 UW |
1954 | if (bfd_arch == bfd_arch_sparc |
1955 | /* SPARC64_CWP_REGNUM, SPARC64_PSTATE_REGNUM, | |
1956 | SPARC64_ASI_REGNUM and SPARC64_CCR_REGNUM are hard to test. */ | |
1957 | && gdbarch_ptr_bit (gdbarch) == 64 | |
1958 | && (regnum >= gdbarch_num_regs (gdbarch) | |
1959 | && regnum <= gdbarch_num_regs (gdbarch) + 4)) | |
ec7a5fcb YQ |
1960 | continue; |
1961 | ||
1962 | std::vector<gdb_byte> expected (register_size (gdbarch, regnum), 0); | |
1963 | std::vector<gdb_byte> buf (register_size (gdbarch, regnum), 0); | |
1964 | const auto type = register_type (gdbarch, regnum); | |
1965 | ||
78134374 SM |
1966 | if (type->code () == TYPE_CODE_FLT |
1967 | || type->code () == TYPE_CODE_DECFLOAT) | |
ec7a5fcb YQ |
1968 | { |
1969 | /* Generate valid float format. */ | |
1970 | target_float_from_string (expected.data (), type, "1.25"); | |
1971 | } | |
78134374 SM |
1972 | else if (type->code () == TYPE_CODE_INT |
1973 | || type->code () == TYPE_CODE_ARRAY | |
1974 | || type->code () == TYPE_CODE_PTR | |
1975 | || type->code () == TYPE_CODE_UNION | |
1976 | || type->code () == TYPE_CODE_STRUCT) | |
ec7a5fcb YQ |
1977 | { |
1978 | if (bfd_arch == bfd_arch_ia64 | |
1979 | || (regnum >= gdbarch_num_regs (gdbarch) | |
1980 | && (bfd_arch == bfd_arch_xtensa | |
1981 | || bfd_arch == bfd_arch_bfin | |
1982 | || bfd_arch == bfd_arch_m32c | |
1983 | /* m68hc11 pseudo registers are in memory. */ | |
1984 | || bfd_arch == bfd_arch_m68hc11 | |
1985 | || bfd_arch == bfd_arch_m68hc12 | |
1986 | || bfd_arch == bfd_arch_s390)) | |
1987 | || (bfd_arch == bfd_arch_frv | |
1988 | /* FRV pseudo registers except iacc0. */ | |
1989 | && regnum > gdbarch_num_regs (gdbarch))) | |
1990 | { | |
1991 | /* Skip setting the expected values for some architecture | |
1992 | registers. */ | |
1993 | } | |
1994 | else if (bfd_arch == bfd_arch_rl78 && regnum == 40) | |
1995 | { | |
1996 | /* RL78_PC_REGNUM */ | |
1997 | for (auto j = 0; j < register_size (gdbarch, regnum) - 1; j++) | |
1998 | expected[j] = j; | |
1999 | } | |
2000 | else | |
2001 | { | |
2002 | for (auto j = 0; j < register_size (gdbarch, regnum); j++) | |
2003 | expected[j] = j; | |
2004 | } | |
2005 | } | |
78134374 | 2006 | else if (type->code () == TYPE_CODE_FLAGS) |
ec7a5fcb YQ |
2007 | { |
2008 | /* No idea how to test flags. */ | |
2009 | continue; | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | /* If we don't know how to create the expected value for the | |
2014 | this type, make it fail. */ | |
2015 | SELF_CHECK (0); | |
2016 | } | |
2017 | ||
2018 | readwrite.cooked_write (regnum, expected.data ()); | |
2019 | ||
2020 | SELF_CHECK (readwrite.cooked_read (regnum, buf.data ()) == REG_VALID); | |
2021 | SELF_CHECK (expected == buf); | |
2022 | } | |
2023 | } | |
2024 | ||
b161a60d SM |
2025 | /* Verify that when two threads with the same ptid exist (from two different |
2026 | targets) and one of them changes ptid, we only update the appropriate | |
2027 | regcaches. */ | |
2028 | ||
2029 | static void | |
2030 | regcache_thread_ptid_changed () | |
2031 | { | |
2032 | /* This test relies on the global regcache list to initially be empty. */ | |
2033 | registers_changed (); | |
2034 | ||
2035 | /* Any arch will do. */ | |
2036 | gdbarch *arch = current_inferior ()->gdbarch; | |
2037 | ||
2038 | /* Prepare two targets with one thread each, with the same ptid. */ | |
2039 | scoped_mock_context<test_target_ops> target1 (arch); | |
2040 | scoped_mock_context<test_target_ops> target2 (arch); | |
2041 | target2.mock_inferior.next = &target1.mock_inferior; | |
2042 | ||
2043 | ptid_t old_ptid (111, 222); | |
2044 | ptid_t new_ptid (111, 333); | |
2045 | ||
2046 | target1.mock_inferior.pid = old_ptid.pid (); | |
2047 | target1.mock_thread.ptid = old_ptid; | |
2048 | target2.mock_inferior.pid = old_ptid.pid (); | |
2049 | target2.mock_thread.ptid = old_ptid; | |
2050 | ||
2051 | gdb_assert (regcaches.empty ()); | |
2052 | ||
2053 | /* Populate the regcaches container. */ | |
2054 | get_thread_arch_aspace_regcache (&target1.mock_target, old_ptid, arch, | |
2055 | nullptr); | |
2056 | get_thread_arch_aspace_regcache (&target2.mock_target, old_ptid, arch, | |
2057 | nullptr); | |
2058 | ||
888bdb2b SM |
2059 | gdb_assert (regcaches.size () == 2); |
2060 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 1); | |
2061 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 0); | |
2062 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
2063 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
2064 | |
2065 | thread_change_ptid (&target1.mock_target, old_ptid, new_ptid); | |
2066 | ||
888bdb2b SM |
2067 | gdb_assert (regcaches.size () == 2); |
2068 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 0); | |
2069 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 1); | |
2070 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
2071 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
2072 | |
2073 | /* Leave the regcache list empty. */ | |
2074 | registers_changed (); | |
2075 | gdb_assert (regcaches.empty ()); | |
2076 | } | |
2077 | ||
8248946c YQ |
2078 | } // namespace selftests |
2079 | #endif /* GDB_SELF_TEST */ | |
2080 | ||
6c265988 | 2081 | void _initialize_regcache (); |
32178cab | 2082 | void |
6c265988 | 2083 | _initialize_regcache () |
32178cab | 2084 | { |
50a5f187 AB |
2085 | struct cmd_list_element *c; |
2086 | ||
3e43a32a MS |
2087 | regcache_descr_handle |
2088 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 2089 | |
c90e7d63 SM |
2090 | gdb::observers::target_changed.attach (regcache_observer_target_changed, |
2091 | "regcache"); | |
2092 | gdb::observers::thread_ptid_changed.attach (regcache_thread_ptid_changed, | |
2093 | "regcache"); | |
f4c5303c | 2094 | |
3947f654 SM |
2095 | cmd_list_element *maintenance_flush_register_cache_cmd |
2096 | = add_cmd ("register-cache", class_maintenance, reg_flush_command, | |
2097 | _("Force gdb to flush its register and frame cache."), | |
2098 | &maintenanceflushlist); | |
2099 | c = add_com_alias ("flushregs", maintenance_flush_register_cache_cmd, | |
50a5f187 AB |
2100 | class_maintenance, 0); |
2101 | deprecate_cmd (c, "maintenance flush register-cache"); | |
39f77062 | 2102 | |
8248946c | 2103 | #if GDB_SELF_TEST |
cdd9148a SM |
2104 | selftests::register_test ("get_thread_arch_aspace_regcache", |
2105 | selftests::get_thread_arch_aspace_regcache_test); | |
2106 | selftests::register_test ("registers_changed_ptid_all", | |
2107 | selftests::registers_changed_ptid_all_test); | |
b70e516e SM |
2108 | selftests::register_test ("registers_changed_ptid_target", |
2109 | selftests::registers_changed_ptid_target_test); | |
2110 | selftests::register_test ("registers_changed_ptid_target_pid", | |
2111 | selftests::registers_changed_ptid_target_pid_test); | |
cdd9148a SM |
2112 | selftests::register_test ("registers_changed_ptid_target_ptid", |
2113 | selftests::registers_changed_ptid_target_ptid_test); | |
1b30aaa5 YQ |
2114 | |
2115 | selftests::register_test_foreach_arch ("regcache::cooked_read_test", | |
2116 | selftests::cooked_read_test); | |
ec7a5fcb YQ |
2117 | selftests::register_test_foreach_arch ("regcache::cooked_write_test", |
2118 | selftests::cooked_write_test); | |
b161a60d SM |
2119 | selftests::register_test ("regcache_thread_ptid_changed", |
2120 | selftests::regcache_thread_ptid_changed); | |
8248946c | 2121 | #endif |
32178cab | 2122 | } |