Commit | Line | Data |
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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 | ||
b70e516e | 322 | /* Type holding regcaches for a given pid. */ |
888bdb2b | 323 | |
b70e516e SM |
324 | using pid_ptid_regcache_map = std::unordered_map<int, ptid_regcache_map>; |
325 | ||
326 | /* Type holding regcaches for a given target. */ | |
327 | ||
328 | using target_pid_ptid_regcache_map | |
329 | = std::unordered_map<process_stratum_target *, pid_ptid_regcache_map>; | |
888bdb2b SM |
330 | |
331 | /* Global structure containing the existing regcaches. */ | |
3fadccb3 | 332 | |
5ebd2499 | 333 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
334 | recording if the register values have been changed (eg. by the |
335 | user). Therefore all registers must be written back to the | |
336 | target when appropriate. */ | |
b70e516e | 337 | static target_pid_ptid_regcache_map regcaches; |
c2250ad1 UW |
338 | |
339 | struct regcache * | |
5b6d1e4f | 340 | get_thread_arch_aspace_regcache (process_stratum_target *target, |
888bdb2b | 341 | ptid_t ptid, gdbarch *arch, |
e2d96639 | 342 | struct address_space *aspace) |
c2250ad1 | 343 | { |
5b6d1e4f PA |
344 | gdb_assert (target != nullptr); |
345 | ||
b70e516e SM |
346 | /* Find the map for this target. */ |
347 | pid_ptid_regcache_map &pid_ptid_regc_map = regcaches[target]; | |
348 | ||
349 | /* Find the map for this pid. */ | |
350 | ptid_regcache_map &ptid_regc_map = pid_ptid_regc_map[ptid.pid ()]; | |
594f7785 | 351 | |
888bdb2b SM |
352 | /* Check first if a regcache for this arch already exists. */ |
353 | auto range = ptid_regc_map.equal_range (ptid); | |
354 | for (auto it = range.first; it != range.second; ++it) | |
355 | { | |
356 | if (it->second->arch () == arch) | |
357 | return it->second.get (); | |
358 | } | |
594f7785 | 359 | |
888bdb2b SM |
360 | /* It does not exist, create it. */ |
361 | regcache *new_regcache = new regcache (target, arch, aspace); | |
ef79d9a3 | 362 | new_regcache->set_ptid (ptid); |
38f8aa06 TV |
363 | /* Work around a problem with g++ 4.8 (PR96537): Call the regcache_up |
364 | constructor explictly instead of implicitly. */ | |
365 | ptid_regc_map.insert (std::make_pair (ptid, regcache_up (new_regcache))); | |
e2d96639 | 366 | |
e2d96639 YQ |
367 | return new_regcache; |
368 | } | |
369 | ||
370 | struct regcache * | |
5b6d1e4f PA |
371 | get_thread_arch_regcache (process_stratum_target *target, ptid_t ptid, |
372 | struct gdbarch *gdbarch) | |
e2d96639 | 373 | { |
5b6d1e4f PA |
374 | scoped_restore_current_inferior restore_current_inferior; |
375 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
ed4227b7 | 376 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 377 | |
5b6d1e4f | 378 | return get_thread_arch_aspace_regcache (target, ptid, gdbarch, aspace); |
594f7785 UW |
379 | } |
380 | ||
5b6d1e4f | 381 | static process_stratum_target *current_thread_target; |
c2250ad1 UW |
382 | static ptid_t current_thread_ptid; |
383 | static struct gdbarch *current_thread_arch; | |
384 | ||
385 | struct regcache * | |
5b6d1e4f | 386 | get_thread_regcache (process_stratum_target *target, ptid_t ptid) |
c2250ad1 | 387 | { |
5b6d1e4f PA |
388 | if (!current_thread_arch |
389 | || target != current_thread_target | |
390 | || current_thread_ptid != ptid) | |
c2250ad1 | 391 | { |
5b6d1e4f PA |
392 | gdb_assert (ptid != null_ptid); |
393 | ||
c2250ad1 | 394 | current_thread_ptid = ptid; |
5b6d1e4f PA |
395 | current_thread_target = target; |
396 | ||
397 | scoped_restore_current_inferior restore_current_inferior; | |
398 | set_current_inferior (find_inferior_ptid (target, ptid)); | |
c2250ad1 UW |
399 | current_thread_arch = target_thread_architecture (ptid); |
400 | } | |
401 | ||
5b6d1e4f | 402 | return get_thread_arch_regcache (target, ptid, current_thread_arch); |
c2250ad1 UW |
403 | } |
404 | ||
00431a78 PA |
405 | /* See regcache.h. */ |
406 | ||
407 | struct regcache * | |
408 | get_thread_regcache (thread_info *thread) | |
409 | { | |
5b6d1e4f PA |
410 | return get_thread_regcache (thread->inf->process_target (), |
411 | thread->ptid); | |
00431a78 PA |
412 | } |
413 | ||
c2250ad1 UW |
414 | struct regcache * |
415 | get_current_regcache (void) | |
594f7785 | 416 | { |
00431a78 | 417 | return get_thread_regcache (inferior_thread ()); |
594f7785 | 418 | } |
32178cab | 419 | |
268a13a5 | 420 | /* See gdbsupport/common-regcache.h. */ |
361c8ade GB |
421 | |
422 | struct regcache * | |
423 | get_thread_regcache_for_ptid (ptid_t ptid) | |
424 | { | |
5b6d1e4f PA |
425 | /* This function doesn't take a process_stratum_target parameter |
426 | because it's a gdbsupport/ routine implemented by both gdb and | |
427 | gdbserver. It always refers to a ptid of the current target. */ | |
428 | process_stratum_target *proc_target = current_inferior ()->process_target (); | |
429 | return get_thread_regcache (proc_target, ptid); | |
361c8ade | 430 | } |
32178cab | 431 | |
f4c5303c OF |
432 | /* Observer for the target_changed event. */ |
433 | ||
2c0b251b | 434 | static void |
f4c5303c OF |
435 | regcache_observer_target_changed (struct target_ops *target) |
436 | { | |
437 | registers_changed (); | |
438 | } | |
439 | ||
159ed7d9 SM |
440 | /* Update regcaches related to OLD_PTID to now use NEW_PTID. */ |
441 | static void | |
b161a60d SM |
442 | regcache_thread_ptid_changed (process_stratum_target *target, |
443 | ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 444 | { |
b70e516e SM |
445 | /* Look up map for target. */ |
446 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
447 | if (pid_ptid_regc_map_it == regcaches.end ()) | |
448 | return; | |
888bdb2b | 449 | |
b70e516e SM |
450 | /* Look up map for pid. */ |
451 | pid_ptid_regcache_map &pid_ptid_regc_map = pid_ptid_regc_map_it->second; | |
452 | auto ptid_regc_map_it = pid_ptid_regc_map.find (old_ptid.pid ()); | |
453 | if (ptid_regc_map_it == pid_ptid_regc_map.end ()) | |
888bdb2b SM |
454 | return; |
455 | ||
b70e516e SM |
456 | /* Update all regcaches belonging to old_ptid. */ |
457 | ptid_regcache_map &ptid_regc_map = ptid_regc_map_it->second; | |
888bdb2b SM |
458 | auto range = ptid_regc_map.equal_range (old_ptid); |
459 | for (auto it = range.first; it != range.second;) | |
94bb8dfe | 460 | { |
888bdb2b SM |
461 | regcache_up rc = std::move (it->second); |
462 | rc->set_ptid (new_ptid); | |
463 | ||
464 | /* Remove old before inserting new, to avoid rehashing, | |
465 | which would invalidate iterators. */ | |
466 | it = ptid_regc_map.erase (it); | |
467 | ptid_regc_map.insert (std::make_pair (new_ptid, std::move (rc))); | |
94bb8dfe | 468 | } |
5231c1fd PA |
469 | } |
470 | ||
32178cab MS |
471 | /* Low level examining and depositing of registers. |
472 | ||
473 | The caller is responsible for making sure that the inferior is | |
474 | stopped before calling the fetching routines, or it will get | |
475 | garbage. (a change from GDB version 3, in which the caller got the | |
476 | value from the last stop). */ | |
477 | ||
478 | /* REGISTERS_CHANGED () | |
479 | ||
480 | Indicate that registers may have changed, so invalidate the cache. */ | |
481 | ||
482 | void | |
5b6d1e4f | 483 | registers_changed_ptid (process_stratum_target *target, ptid_t ptid) |
32178cab | 484 | { |
888bdb2b SM |
485 | if (target == nullptr) |
486 | { | |
487 | /* Since there can be ptid clashes between targets, it's not valid to | |
488 | pass a ptid without saying to which target it belongs. */ | |
489 | gdb_assert (ptid == minus_one_ptid); | |
490 | ||
491 | /* Delete all the regcaches of all targets. */ | |
492 | regcaches.clear (); | |
493 | } | |
b70e516e SM |
494 | else if (ptid.is_pid ()) |
495 | { | |
496 | /* Non-NULL target and pid ptid, delete all regcaches belonging | |
497 | to this (TARGET, PID). */ | |
498 | ||
499 | /* Look up map for target. */ | |
500 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
501 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
502 | { | |
503 | pid_ptid_regcache_map &pid_ptid_regc_map | |
504 | = pid_ptid_regc_map_it->second; | |
505 | ||
506 | pid_ptid_regc_map.erase (ptid.pid ()); | |
507 | } | |
508 | } | |
888bdb2b | 509 | else if (ptid != minus_one_ptid) |
c2250ad1 | 510 | { |
888bdb2b | 511 | /* Non-NULL target and non-minus_one_ptid, delete all regcaches belonging |
b70e516e SM |
512 | to this (TARGET, PTID). */ |
513 | ||
514 | /* Look up map for target. */ | |
515 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
516 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
e66408ed | 517 | { |
b70e516e SM |
518 | pid_ptid_regcache_map &pid_ptid_regc_map |
519 | = pid_ptid_regc_map_it->second; | |
520 | ||
521 | /* Look up map for pid. */ | |
522 | auto ptid_regc_map_it | |
523 | = pid_ptid_regc_map.find (ptid.pid ()); | |
524 | if (ptid_regc_map_it != pid_ptid_regc_map.end ()) | |
525 | { | |
526 | ptid_regcache_map &ptid_regc_map | |
527 | = ptid_regc_map_it->second; | |
528 | ||
529 | ptid_regc_map.erase (ptid); | |
530 | } | |
e66408ed | 531 | } |
888bdb2b SM |
532 | } |
533 | else | |
534 | { | |
535 | /* Non-NULL target and minus_one_ptid, delete all regcaches | |
536 | associated to this target. */ | |
537 | regcaches.erase (target); | |
c2250ad1 | 538 | } |
32178cab | 539 | |
5b6d1e4f PA |
540 | if ((target == nullptr || current_thread_target == target) |
541 | && current_thread_ptid.matches (ptid)) | |
041274d8 | 542 | { |
5b6d1e4f | 543 | current_thread_target = NULL; |
041274d8 PA |
544 | current_thread_ptid = null_ptid; |
545 | current_thread_arch = NULL; | |
546 | } | |
32178cab | 547 | |
5b6d1e4f PA |
548 | if ((target == nullptr || current_inferior ()->process_target () == target) |
549 | && inferior_ptid.matches (ptid)) | |
041274d8 PA |
550 | { |
551 | /* We just deleted the regcache of the current thread. Need to | |
552 | forget about any frames we have cached, too. */ | |
553 | reinit_frame_cache (); | |
554 | } | |
555 | } | |
c2250ad1 | 556 | |
00431a78 PA |
557 | /* See regcache.h. */ |
558 | ||
559 | void | |
560 | registers_changed_thread (thread_info *thread) | |
561 | { | |
5b6d1e4f | 562 | registers_changed_ptid (thread->inf->process_target (), thread->ptid); |
00431a78 PA |
563 | } |
564 | ||
041274d8 PA |
565 | void |
566 | registers_changed (void) | |
567 | { | |
5b6d1e4f | 568 | registers_changed_ptid (nullptr, minus_one_ptid); |
32178cab MS |
569 | } |
570 | ||
ef79d9a3 YQ |
571 | void |
572 | regcache::raw_update (int regnum) | |
573 | { | |
4e888c28 | 574 | assert_regnum (regnum); |
8e368124 | 575 | |
3fadccb3 AC |
576 | /* Make certain that the register cache is up-to-date with respect |
577 | to the current thread. This switching shouldn't be necessary | |
578 | only there is still only one target side register cache. Sigh! | |
579 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 580 | |
796bb026 | 581 | if (get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 582 | { |
ef79d9a3 | 583 | target_fetch_registers (this, regnum); |
788c8b10 PA |
584 | |
585 | /* A number of targets can't access the whole set of raw | |
586 | registers (because the debug API provides no means to get at | |
587 | them). */ | |
ef79d9a3 YQ |
588 | if (m_register_status[regnum] == REG_UNKNOWN) |
589 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 590 | } |
8e368124 AH |
591 | } |
592 | ||
ef79d9a3 | 593 | enum register_status |
849d0ba8 | 594 | readable_regcache::raw_read (int regnum, gdb_byte *buf) |
8e368124 AH |
595 | { |
596 | gdb_assert (buf != NULL); | |
ef79d9a3 | 597 | raw_update (regnum); |
05d1431c | 598 | |
ef79d9a3 YQ |
599 | if (m_register_status[regnum] != REG_VALID) |
600 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 601 | else |
ef79d9a3 YQ |
602 | memcpy (buf, register_buffer (regnum), |
603 | m_descr->sizeof_register[regnum]); | |
05d1431c | 604 | |
aac0d564 | 605 | return m_register_status[regnum]; |
61a0eb5b AC |
606 | } |
607 | ||
05d1431c | 608 | enum register_status |
28fc6740 | 609 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
610 | { |
611 | gdb_assert (regcache != NULL); | |
6f98355c | 612 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
613 | } |
614 | ||
6f98355c | 615 | template<typename T, typename> |
ef79d9a3 | 616 | enum register_status |
849d0ba8 | 617 | readable_regcache::raw_read (int regnum, T *val) |
28fc6740 | 618 | { |
2d522557 | 619 | gdb_byte *buf; |
05d1431c | 620 | enum register_status status; |
123f5f96 | 621 | |
4e888c28 | 622 | assert_regnum (regnum); |
ef79d9a3 YQ |
623 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
624 | status = raw_read (regnum, buf); | |
05d1431c | 625 | if (status == REG_VALID) |
6f98355c YQ |
626 | *val = extract_integer<T> (buf, |
627 | m_descr->sizeof_register[regnum], | |
628 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
629 | else |
630 | *val = 0; | |
631 | return status; | |
28fc6740 AC |
632 | } |
633 | ||
05d1431c | 634 | enum register_status |
28fc6740 AC |
635 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
636 | ULONGEST *val) | |
ef79d9a3 YQ |
637 | { |
638 | gdb_assert (regcache != NULL); | |
6f98355c | 639 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
640 | } |
641 | ||
c00dcbe9 MK |
642 | void |
643 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
644 | { |
645 | gdb_assert (regcache != NULL); | |
6f98355c | 646 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
647 | } |
648 | ||
6f98355c | 649 | template<typename T, typename> |
ef79d9a3 | 650 | void |
6f98355c | 651 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 652 | { |
7c543f7b | 653 | gdb_byte *buf; |
123f5f96 | 654 | |
4e888c28 | 655 | assert_regnum (regnum); |
ef79d9a3 | 656 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
6f98355c YQ |
657 | store_integer (buf, m_descr->sizeof_register[regnum], |
658 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 659 | raw_write (regnum, buf); |
c00dcbe9 MK |
660 | } |
661 | ||
662 | void | |
663 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
664 | ULONGEST val) | |
ef79d9a3 YQ |
665 | { |
666 | gdb_assert (regcache != NULL); | |
6f98355c | 667 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
668 | } |
669 | ||
9fd15b2e YQ |
670 | LONGEST |
671 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
672 | { | |
673 | LONGEST value; | |
674 | enum register_status status; | |
675 | ||
676 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
677 | if (status == REG_UNAVAILABLE) | |
678 | throw_error (NOT_AVAILABLE_ERROR, | |
679 | _("Register %d is not available"), regnum); | |
680 | return value; | |
681 | } | |
682 | ||
ef79d9a3 | 683 | enum register_status |
849d0ba8 | 684 | readable_regcache::cooked_read (int regnum, gdb_byte *buf) |
68365089 | 685 | { |
d138e37a | 686 | gdb_assert (regnum >= 0); |
ef79d9a3 | 687 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 688 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 689 | return raw_read (regnum, buf); |
849d0ba8 | 690 | else if (m_has_pseudo |
ef79d9a3 | 691 | && m_register_status[regnum] != REG_UNKNOWN) |
05d1431c | 692 | { |
ef79d9a3 YQ |
693 | if (m_register_status[regnum] == REG_VALID) |
694 | memcpy (buf, register_buffer (regnum), | |
695 | m_descr->sizeof_register[regnum]); | |
05d1431c | 696 | else |
ef79d9a3 | 697 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 698 | |
aac0d564 | 699 | return m_register_status[regnum]; |
05d1431c | 700 | } |
ef79d9a3 | 701 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
702 | { |
703 | struct value *mark, *computed; | |
704 | enum register_status result = REG_VALID; | |
705 | ||
706 | mark = value_mark (); | |
707 | ||
ef79d9a3 YQ |
708 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
709 | this, regnum); | |
3543a589 TT |
710 | if (value_entirely_available (computed)) |
711 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 712 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
713 | else |
714 | { | |
ef79d9a3 | 715 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
716 | result = REG_UNAVAILABLE; |
717 | } | |
718 | ||
719 | value_free_to_mark (mark); | |
720 | ||
721 | return result; | |
722 | } | |
d138e37a | 723 | else |
ef79d9a3 | 724 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 725 | regnum, buf); |
61a0eb5b AC |
726 | } |
727 | ||
ef79d9a3 | 728 | struct value * |
849d0ba8 | 729 | readable_regcache::cooked_read_value (int regnum) |
3543a589 TT |
730 | { |
731 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 732 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 733 | |
d999647b | 734 | if (regnum < num_raw_registers () |
849d0ba8 | 735 | || (m_has_pseudo && m_register_status[regnum] != REG_UNKNOWN) |
ef79d9a3 | 736 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
737 | { |
738 | struct value *result; | |
739 | ||
ef79d9a3 | 740 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
741 | VALUE_LVAL (result) = lval_register; |
742 | VALUE_REGNUM (result) = regnum; | |
743 | ||
744 | /* It is more efficient in general to do this delegation in this | |
745 | direction than in the other one, even though the value-based | |
746 | API is preferred. */ | |
ef79d9a3 YQ |
747 | if (cooked_read (regnum, |
748 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
749 | mark_value_bytes_unavailable (result, 0, |
750 | TYPE_LENGTH (value_type (result))); | |
751 | ||
752 | return result; | |
753 | } | |
754 | else | |
ef79d9a3 YQ |
755 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
756 | this, regnum); | |
3543a589 TT |
757 | } |
758 | ||
05d1431c | 759 | enum register_status |
a378f419 AC |
760 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
761 | LONGEST *val) | |
ef79d9a3 YQ |
762 | { |
763 | gdb_assert (regcache != NULL); | |
6f98355c | 764 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
765 | } |
766 | ||
6f98355c | 767 | template<typename T, typename> |
ef79d9a3 | 768 | enum register_status |
849d0ba8 | 769 | readable_regcache::cooked_read (int regnum, T *val) |
a378f419 | 770 | { |
05d1431c | 771 | enum register_status status; |
2d522557 | 772 | gdb_byte *buf; |
123f5f96 | 773 | |
ef79d9a3 YQ |
774 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
775 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
776 | status = cooked_read (regnum, buf); | |
05d1431c | 777 | if (status == REG_VALID) |
6f98355c YQ |
778 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
779 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
780 | else |
781 | *val = 0; | |
782 | return status; | |
a378f419 AC |
783 | } |
784 | ||
05d1431c | 785 | enum register_status |
a378f419 AC |
786 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
787 | ULONGEST *val) | |
ef79d9a3 YQ |
788 | { |
789 | gdb_assert (regcache != NULL); | |
6f98355c | 790 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
791 | } |
792 | ||
a66a9c23 AC |
793 | void |
794 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
795 | LONGEST val) | |
ef79d9a3 YQ |
796 | { |
797 | gdb_assert (regcache != NULL); | |
6f98355c | 798 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
799 | } |
800 | ||
6f98355c | 801 | template<typename T, typename> |
ef79d9a3 | 802 | void |
6f98355c | 803 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 804 | { |
7c543f7b | 805 | gdb_byte *buf; |
123f5f96 | 806 | |
ef79d9a3 YQ |
807 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
808 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
809 | store_integer (buf, m_descr->sizeof_register[regnum], |
810 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 811 | cooked_write (regnum, buf); |
a66a9c23 AC |
812 | } |
813 | ||
814 | void | |
815 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
816 | ULONGEST val) | |
ef79d9a3 YQ |
817 | { |
818 | gdb_assert (regcache != NULL); | |
6f98355c | 819 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
820 | } |
821 | ||
ef79d9a3 YQ |
822 | void |
823 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 824 | { |
594f7785 | 825 | |
ef79d9a3 | 826 | gdb_assert (buf != NULL); |
4e888c28 | 827 | assert_regnum (regnum); |
3fadccb3 | 828 | |
3fadccb3 AC |
829 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
830 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 831 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
832 | return; |
833 | ||
3fadccb3 | 834 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 835 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
836 | if (get_register_status (regnum) == REG_VALID |
837 | && (memcmp (register_buffer (regnum), buf, | |
838 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
839 | return; |
840 | ||
ef79d9a3 | 841 | target_prepare_to_store (this); |
c8ec2f33 | 842 | raw_supply (regnum, buf); |
b94ade42 | 843 | |
b292235f TT |
844 | /* Invalidate the register after it is written, in case of a |
845 | failure. */ | |
311dc83a TT |
846 | auto invalidator |
847 | = make_scope_exit ([&] { this->invalidate (regnum); }); | |
b94ade42 | 848 | |
ef79d9a3 | 849 | target_store_registers (this, regnum); |
594f7785 | 850 | |
b292235f TT |
851 | /* The target did not throw an error so we can discard invalidating |
852 | the register. */ | |
853 | invalidator.release (); | |
61a0eb5b AC |
854 | } |
855 | ||
ef79d9a3 YQ |
856 | void |
857 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 858 | { |
d138e37a | 859 | gdb_assert (regnum >= 0); |
ef79d9a3 | 860 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 861 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 862 | raw_write (regnum, buf); |
d138e37a | 863 | else |
ef79d9a3 | 864 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 865 | regnum, buf); |
61a0eb5b AC |
866 | } |
867 | ||
33bab475 | 868 | /* See regcache.h. */ |
06c0b04e | 869 | |
ef79d9a3 | 870 | enum register_status |
33bab475 AH |
871 | readable_regcache::read_part (int regnum, int offset, int len, |
872 | gdb_byte *out, bool is_raw) | |
849d0ba8 | 873 | { |
33bab475 AH |
874 | int reg_size = register_size (arch (), regnum); |
875 | ||
876 | gdb_assert (out != NULL); | |
8e7767e3 AH |
877 | gdb_assert (offset >= 0 && offset <= reg_size); |
878 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
879 | |
880 | if (offset == 0 && len == 0) | |
881 | { | |
882 | /* Nothing to do. */ | |
883 | return REG_VALID; | |
884 | } | |
885 | ||
886 | if (offset == 0 && len == reg_size) | |
887 | { | |
888 | /* Read the full register. */ | |
889 | return (is_raw) ? raw_read (regnum, out) : cooked_read (regnum, out); | |
890 | } | |
849d0ba8 | 891 | |
849d0ba8 | 892 | enum register_status status; |
33bab475 | 893 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); |
849d0ba8 | 894 | |
33bab475 AH |
895 | /* Read full register to buffer. */ |
896 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
849d0ba8 YQ |
897 | if (status != REG_VALID) |
898 | return status; | |
899 | ||
33bab475 AH |
900 | /* Copy out. */ |
901 | memcpy (out, reg + offset, len); | |
849d0ba8 YQ |
902 | return REG_VALID; |
903 | } | |
904 | ||
33bab475 AH |
905 | /* See regcache.h. */ |
906 | ||
8e7767e3 AH |
907 | void |
908 | reg_buffer::raw_collect_part (int regnum, int offset, int len, | |
909 | gdb_byte *out) const | |
910 | { | |
911 | int reg_size = register_size (arch (), regnum); | |
912 | ||
913 | gdb_assert (out != nullptr); | |
914 | gdb_assert (offset >= 0 && offset <= reg_size); | |
915 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
916 | ||
917 | if (offset == 0 && len == 0) | |
918 | { | |
919 | /* Nothing to do. */ | |
920 | return; | |
921 | } | |
922 | ||
923 | if (offset == 0 && len == reg_size) | |
924 | { | |
925 | /* Collect the full register. */ | |
926 | return raw_collect (regnum, out); | |
927 | } | |
928 | ||
929 | /* Read to buffer, then write out. */ | |
930 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
931 | raw_collect (regnum, reg); | |
932 | memcpy (out, reg + offset, len); | |
933 | } | |
934 | ||
935 | /* See regcache.h. */ | |
936 | ||
849d0ba8 YQ |
937 | enum register_status |
938 | regcache::write_part (int regnum, int offset, int len, | |
33bab475 | 939 | const gdb_byte *in, bool is_raw) |
ef79d9a3 | 940 | { |
33bab475 | 941 | int reg_size = register_size (arch (), regnum); |
123f5f96 | 942 | |
33bab475 | 943 | gdb_assert (in != NULL); |
8e7767e3 AH |
944 | gdb_assert (offset >= 0 && offset <= reg_size); |
945 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
33bab475 AH |
946 | |
947 | if (offset == 0 && len == 0) | |
06c0b04e | 948 | { |
33bab475 AH |
949 | /* Nothing to do. */ |
950 | return REG_VALID; | |
951 | } | |
05d1431c | 952 | |
33bab475 AH |
953 | if (offset == 0 && len == reg_size) |
954 | { | |
955 | /* Write the full register. */ | |
956 | (is_raw) ? raw_write (regnum, in) : cooked_write (regnum, in); | |
957 | return REG_VALID; | |
06c0b04e | 958 | } |
849d0ba8 | 959 | |
33bab475 AH |
960 | enum register_status status; |
961 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
05d1431c | 962 | |
33bab475 AH |
963 | /* Read existing register to buffer. */ |
964 | status = (is_raw) ? raw_read (regnum, reg) : cooked_read (regnum, reg); | |
965 | if (status != REG_VALID) | |
966 | return status; | |
967 | ||
968 | /* Update buffer, then write back to regcache. */ | |
969 | memcpy (reg + offset, in, len); | |
970 | is_raw ? raw_write (regnum, reg) : cooked_write (regnum, reg); | |
05d1431c | 971 | return REG_VALID; |
06c0b04e AC |
972 | } |
973 | ||
33bab475 AH |
974 | /* See regcache.h. */ |
975 | ||
8e7767e3 AH |
976 | void |
977 | reg_buffer::raw_supply_part (int regnum, int offset, int len, | |
978 | const gdb_byte *in) | |
979 | { | |
980 | int reg_size = register_size (arch (), regnum); | |
981 | ||
982 | gdb_assert (in != nullptr); | |
983 | gdb_assert (offset >= 0 && offset <= reg_size); | |
984 | gdb_assert (len >= 0 && offset + len <= reg_size); | |
985 | ||
986 | if (offset == 0 && len == 0) | |
987 | { | |
988 | /* Nothing to do. */ | |
989 | return; | |
990 | } | |
991 | ||
992 | if (offset == 0 && len == reg_size) | |
993 | { | |
994 | /* Supply the full register. */ | |
995 | return raw_supply (regnum, in); | |
996 | } | |
997 | ||
998 | gdb_byte *reg = (gdb_byte *) alloca (reg_size); | |
999 | ||
1000 | /* Read existing value to buffer. */ | |
1001 | raw_collect (regnum, reg); | |
1002 | ||
1003 | /* Write to buffer, then write out. */ | |
1004 | memcpy (reg + offset, in, len); | |
1005 | raw_supply (regnum, reg); | |
1006 | } | |
1007 | ||
ef79d9a3 | 1008 | enum register_status |
33bab475 AH |
1009 | readable_regcache::raw_read_part (int regnum, int offset, int len, |
1010 | gdb_byte *buf) | |
ef79d9a3 | 1011 | { |
4e888c28 | 1012 | assert_regnum (regnum); |
849d0ba8 | 1013 | return read_part (regnum, offset, len, buf, true); |
06c0b04e AC |
1014 | } |
1015 | ||
4f0420fd | 1016 | /* See regcache.h. */ |
123f5f96 | 1017 | |
ef79d9a3 YQ |
1018 | void |
1019 | regcache::raw_write_part (int regnum, int offset, int len, | |
1020 | const gdb_byte *buf) | |
1021 | { | |
4e888c28 | 1022 | assert_regnum (regnum); |
849d0ba8 | 1023 | write_part (regnum, offset, len, buf, true); |
06c0b04e AC |
1024 | } |
1025 | ||
33bab475 AH |
1026 | /* See regcache.h. */ |
1027 | ||
ef79d9a3 | 1028 | enum register_status |
849d0ba8 YQ |
1029 | readable_regcache::cooked_read_part (int regnum, int offset, int len, |
1030 | gdb_byte *buf) | |
ef79d9a3 YQ |
1031 | { |
1032 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 1033 | return read_part (regnum, offset, len, buf, false); |
06c0b04e AC |
1034 | } |
1035 | ||
33bab475 AH |
1036 | /* See regcache.h. */ |
1037 | ||
ef79d9a3 YQ |
1038 | void |
1039 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1040 | const gdb_byte *buf) | |
1041 | { | |
1042 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 1043 | write_part (regnum, offset, len, buf, false); |
06c0b04e | 1044 | } |
32178cab | 1045 | |
268a13a5 | 1046 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1047 | |
ef79d9a3 | 1048 | void |
9c861883 | 1049 | reg_buffer::raw_supply (int regnum, const void *buf) |
9a661b68 MK |
1050 | { |
1051 | void *regbuf; | |
1052 | size_t size; | |
1053 | ||
4e888c28 | 1054 | assert_regnum (regnum); |
9a661b68 | 1055 | |
ef79d9a3 YQ |
1056 | regbuf = register_buffer (regnum); |
1057 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1058 | |
1059 | if (buf) | |
ee99023e PA |
1060 | { |
1061 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1062 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1063 | } |
9a661b68 | 1064 | else |
ee99023e PA |
1065 | { |
1066 | /* This memset not strictly necessary, but better than garbage | |
1067 | in case the register value manages to escape somewhere (due | |
1068 | to a bug, no less). */ | |
1069 | memset (regbuf, 0, size); | |
ef79d9a3 | 1070 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1071 | } |
9a661b68 MK |
1072 | } |
1073 | ||
9c861883 | 1074 | /* See regcache.h. */ |
b057297a AH |
1075 | |
1076 | void | |
9c861883 AH |
1077 | reg_buffer::raw_supply_integer (int regnum, const gdb_byte *addr, |
1078 | int addr_len, bool is_signed) | |
b057297a AH |
1079 | { |
1080 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1081 | gdb_byte *regbuf; | |
1082 | size_t regsize; | |
1083 | ||
4e888c28 | 1084 | assert_regnum (regnum); |
b057297a AH |
1085 | |
1086 | regbuf = register_buffer (regnum); | |
1087 | regsize = m_descr->sizeof_register[regnum]; | |
1088 | ||
1089 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1090 | byte_order); | |
1091 | m_register_status[regnum] = REG_VALID; | |
1092 | } | |
1093 | ||
9c861883 | 1094 | /* See regcache.h. */ |
f81fdd35 AH |
1095 | |
1096 | void | |
9c861883 | 1097 | reg_buffer::raw_supply_zeroed (int regnum) |
f81fdd35 AH |
1098 | { |
1099 | void *regbuf; | |
1100 | size_t size; | |
1101 | ||
4e888c28 | 1102 | assert_regnum (regnum); |
f81fdd35 AH |
1103 | |
1104 | regbuf = register_buffer (regnum); | |
1105 | size = m_descr->sizeof_register[regnum]; | |
1106 | ||
1107 | memset (regbuf, 0, size); | |
1108 | m_register_status[regnum] = REG_VALID; | |
1109 | } | |
1110 | ||
268a13a5 | 1111 | /* See gdbsupport/common-regcache.h. */ |
9c861883 | 1112 | |
ef79d9a3 | 1113 | void |
9c861883 | 1114 | reg_buffer::raw_collect (int regnum, void *buf) const |
9a661b68 MK |
1115 | { |
1116 | const void *regbuf; | |
1117 | size_t size; | |
1118 | ||
ef79d9a3 | 1119 | gdb_assert (buf != NULL); |
4e888c28 | 1120 | assert_regnum (regnum); |
9a661b68 | 1121 | |
ef79d9a3 YQ |
1122 | regbuf = register_buffer (regnum); |
1123 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1124 | memcpy (buf, regbuf, size); |
1125 | } | |
1126 | ||
9c861883 | 1127 | /* See regcache.h. */ |
b057297a AH |
1128 | |
1129 | void | |
9c861883 AH |
1130 | reg_buffer::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, |
1131 | bool is_signed) const | |
b057297a AH |
1132 | { |
1133 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1134 | const gdb_byte *regbuf; | |
1135 | size_t regsize; | |
1136 | ||
4e888c28 | 1137 | assert_regnum (regnum); |
b057297a AH |
1138 | |
1139 | regbuf = register_buffer (regnum); | |
1140 | regsize = m_descr->sizeof_register[regnum]; | |
1141 | ||
1142 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1143 | byte_order); | |
1144 | } | |
1145 | ||
8e7767e3 AH |
1146 | /* See regcache.h. */ |
1147 | ||
1148 | void | |
1149 | regcache::transfer_regset_register (struct regcache *out_regcache, int regnum, | |
1150 | const gdb_byte *in_buf, gdb_byte *out_buf, | |
1151 | int slot_size, int offs) const | |
1152 | { | |
1153 | struct gdbarch *gdbarch = arch (); | |
1154 | int reg_size = std::min (register_size (gdbarch, regnum), slot_size); | |
1155 | ||
1156 | /* Use part versions and reg_size to prevent possible buffer overflows when | |
1157 | accessing the regcache. */ | |
1158 | ||
1159 | if (out_buf != nullptr) | |
1160 | { | |
1161 | raw_collect_part (regnum, 0, reg_size, out_buf + offs); | |
1162 | ||
1163 | /* Ensure any additional space is cleared. */ | |
1164 | if (slot_size > reg_size) | |
1165 | memset (out_buf + offs + reg_size, 0, slot_size - reg_size); | |
1166 | } | |
1167 | else if (in_buf != nullptr) | |
1168 | out_regcache->raw_supply_part (regnum, 0, reg_size, in_buf + offs); | |
1169 | else | |
1170 | { | |
1171 | /* Invalidate the register. */ | |
1172 | out_regcache->raw_supply (regnum, nullptr); | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* See regcache.h. */ | |
9c861883 | 1177 | |
ef79d9a3 YQ |
1178 | void |
1179 | regcache::transfer_regset (const struct regset *regset, | |
1180 | struct regcache *out_regcache, | |
8e7767e3 AH |
1181 | int regnum, const gdb_byte *in_buf, |
1182 | gdb_byte *out_buf, size_t size) const | |
0b309272 AA |
1183 | { |
1184 | const struct regcache_map_entry *map; | |
1185 | int offs = 0, count; | |
1186 | ||
19ba03f4 SM |
1187 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1188 | (count = map->count) != 0; | |
1189 | map++) | |
0b309272 AA |
1190 | { |
1191 | int regno = map->regno; | |
1192 | int slot_size = map->size; | |
1193 | ||
1194 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1195 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1196 | |
1197 | if (regno == REGCACHE_MAP_SKIP | |
1198 | || (regnum != -1 | |
1199 | && (regnum < regno || regnum >= regno + count))) | |
1200 | offs += count * slot_size; | |
1201 | ||
1202 | else if (regnum == -1) | |
1203 | for (; count--; regno++, offs += slot_size) | |
1204 | { | |
1205 | if (offs + slot_size > size) | |
1206 | break; | |
1207 | ||
8e7767e3 AH |
1208 | transfer_regset_register (out_regcache, regno, in_buf, out_buf, |
1209 | slot_size, offs); | |
0b309272 AA |
1210 | } |
1211 | else | |
1212 | { | |
1213 | /* Transfer a single register and return. */ | |
1214 | offs += (regnum - regno) * slot_size; | |
1215 | if (offs + slot_size > size) | |
1216 | return; | |
1217 | ||
8e7767e3 AH |
1218 | transfer_regset_register (out_regcache, regnum, in_buf, out_buf, |
1219 | slot_size, offs); | |
0b309272 AA |
1220 | return; |
1221 | } | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1226 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1227 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1228 | ||
1229 | void | |
1230 | regcache_supply_regset (const struct regset *regset, | |
1231 | struct regcache *regcache, | |
1232 | int regnum, const void *buf, size_t size) | |
1233 | { | |
8e7767e3 | 1234 | regcache->supply_regset (regset, regnum, (const gdb_byte *) buf, size); |
ef79d9a3 YQ |
1235 | } |
1236 | ||
1237 | void | |
1238 | regcache::supply_regset (const struct regset *regset, | |
1239 | int regnum, const void *buf, size_t size) | |
1240 | { | |
8e7767e3 | 1241 | transfer_regset (regset, this, regnum, (const gdb_byte *) buf, nullptr, size); |
0b309272 AA |
1242 | } |
1243 | ||
1244 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1245 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1246 | REGSET. */ | |
1247 | ||
1248 | void | |
1249 | regcache_collect_regset (const struct regset *regset, | |
1250 | const struct regcache *regcache, | |
1251 | int regnum, void *buf, size_t size) | |
1252 | { | |
8e7767e3 | 1253 | regcache->collect_regset (regset, regnum, (gdb_byte *) buf, size); |
ef79d9a3 YQ |
1254 | } |
1255 | ||
1256 | void | |
1257 | regcache::collect_regset (const struct regset *regset, | |
1258 | int regnum, void *buf, size_t size) const | |
1259 | { | |
8e7767e3 | 1260 | transfer_regset (regset, nullptr, regnum, nullptr, (gdb_byte *) buf, size); |
0b309272 AA |
1261 | } |
1262 | ||
268a13a5 | 1263 | /* See gdbsupport/common-regcache.h. */ |
f868386e AH |
1264 | |
1265 | bool | |
1266 | reg_buffer::raw_compare (int regnum, const void *buf, int offset) const | |
1267 | { | |
1268 | gdb_assert (buf != NULL); | |
1269 | assert_regnum (regnum); | |
1270 | ||
1271 | const char *regbuf = (const char *) register_buffer (regnum); | |
1272 | size_t size = m_descr->sizeof_register[regnum]; | |
1273 | gdb_assert (size >= offset); | |
1274 | ||
1275 | return (memcmp (buf, regbuf + offset, size - offset) == 0); | |
1276 | } | |
193cb69f | 1277 | |
515630c5 | 1278 | /* Special handling for register PC. */ |
32178cab MS |
1279 | |
1280 | CORE_ADDR | |
515630c5 | 1281 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1282 | { |
ac7936df | 1283 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1284 | |
32178cab MS |
1285 | CORE_ADDR pc_val; |
1286 | ||
61a1198a UW |
1287 | if (gdbarch_read_pc_p (gdbarch)) |
1288 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1289 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1290 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1291 | { |
61a1198a | 1292 | ULONGEST raw_val; |
123f5f96 | 1293 | |
05d1431c PA |
1294 | if (regcache_cooked_read_unsigned (regcache, |
1295 | gdbarch_pc_regnum (gdbarch), | |
1296 | &raw_val) == REG_UNAVAILABLE) | |
1297 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1298 | ||
214e098a | 1299 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1300 | } |
1301 | else | |
515630c5 UW |
1302 | internal_error (__FILE__, __LINE__, |
1303 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1304 | return pc_val; |
1305 | } | |
1306 | ||
fc75c28b TBA |
1307 | /* See gdbsupport/common-regcache.h. */ |
1308 | ||
1309 | CORE_ADDR | |
1310 | regcache_read_pc_protected (regcache *regcache) | |
1311 | { | |
1312 | CORE_ADDR pc; | |
1313 | try | |
1314 | { | |
1315 | pc = regcache_read_pc (regcache); | |
1316 | } | |
1317 | catch (const gdb_exception_error &ex) | |
1318 | { | |
1319 | pc = 0; | |
1320 | } | |
1321 | ||
1322 | return pc; | |
1323 | } | |
1324 | ||
32178cab | 1325 | void |
515630c5 | 1326 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1327 | { |
ac7936df | 1328 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1329 | |
61a1198a UW |
1330 | if (gdbarch_write_pc_p (gdbarch)) |
1331 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1332 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1333 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1334 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1335 | else |
1336 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1337 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1338 | |
1339 | /* Writing the PC (for instance, from "load") invalidates the | |
1340 | current frame. */ | |
1341 | reinit_frame_cache (); | |
32178cab MS |
1342 | } |
1343 | ||
d999647b | 1344 | int |
31716595 | 1345 | reg_buffer::num_raw_registers () const |
d999647b YQ |
1346 | { |
1347 | return gdbarch_num_regs (arch ()); | |
1348 | } | |
1349 | ||
ed771251 | 1350 | void |
ef79d9a3 | 1351 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1352 | { |
ef79d9a3 | 1353 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1354 | |
1355 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1356 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1357 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1358 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1359 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1360 | gdbarch_register_name (gdbarch, regno)); | |
1361 | else | |
1362 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1363 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1364 | { | |
1365 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1366 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1367 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1368 | |
1369 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1370 | for (int i = 0; i < size; i++) | |
1371 | { | |
1372 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1373 | } | |
1374 | if (size <= sizeof (LONGEST)) | |
1375 | { | |
1376 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1377 | ||
1378 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1379 | core_addr_to_string_nz (val), plongest (val)); | |
1380 | } | |
1381 | } | |
1382 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1383 | } | |
32178cab | 1384 | |
705152c5 | 1385 | static void |
0b39b52e | 1386 | reg_flush_command (const char *command, int from_tty) |
705152c5 MS |
1387 | { |
1388 | /* Force-flush the register cache. */ | |
1389 | registers_changed (); | |
1390 | if (from_tty) | |
a3f17187 | 1391 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1392 | } |
1393 | ||
4c74fe6b YQ |
1394 | void |
1395 | register_dump::dump (ui_file *file) | |
af030b9a | 1396 | { |
4c74fe6b YQ |
1397 | auto descr = regcache_descr (m_gdbarch); |
1398 | int regnum; | |
1399 | int footnote_nr = 0; | |
1400 | int footnote_register_offset = 0; | |
1401 | int footnote_register_type_name_null = 0; | |
1402 | long register_offset = 0; | |
af030b9a | 1403 | |
4c74fe6b | 1404 | gdb_assert (descr->nr_cooked_registers |
f6efe3f8 | 1405 | == gdbarch_num_cooked_regs (m_gdbarch)); |
af030b9a | 1406 | |
4c74fe6b YQ |
1407 | for (regnum = -1; regnum < descr->nr_cooked_registers; regnum++) |
1408 | { | |
1409 | /* Name. */ | |
1410 | if (regnum < 0) | |
1411 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1412 | else | |
1413 | { | |
1414 | const char *p = gdbarch_register_name (m_gdbarch, regnum); | |
123f5f96 | 1415 | |
4c74fe6b YQ |
1416 | if (p == NULL) |
1417 | p = ""; | |
1418 | else if (p[0] == '\0') | |
1419 | p = "''"; | |
1420 | fprintf_unfiltered (file, " %-10s", p); | |
1421 | } | |
af030b9a | 1422 | |
4c74fe6b YQ |
1423 | /* Number. */ |
1424 | if (regnum < 0) | |
1425 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1426 | else | |
1427 | fprintf_unfiltered (file, " %4d", regnum); | |
af030b9a | 1428 | |
4c74fe6b YQ |
1429 | /* Relative number. */ |
1430 | if (regnum < 0) | |
1431 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1432 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
1433 | fprintf_unfiltered (file, " %4d", regnum); | |
1434 | else | |
1435 | fprintf_unfiltered (file, " %4d", | |
1436 | (regnum - gdbarch_num_regs (m_gdbarch))); | |
af030b9a | 1437 | |
4c74fe6b YQ |
1438 | /* Offset. */ |
1439 | if (regnum < 0) | |
1440 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1441 | else | |
af030b9a | 1442 | { |
4c74fe6b YQ |
1443 | fprintf_unfiltered (file, " %6ld", |
1444 | descr->register_offset[regnum]); | |
1445 | if (register_offset != descr->register_offset[regnum] | |
1446 | || (regnum > 0 | |
1447 | && (descr->register_offset[regnum] | |
1448 | != (descr->register_offset[regnum - 1] | |
1449 | + descr->sizeof_register[regnum - 1]))) | |
1450 | ) | |
af030b9a | 1451 | { |
4c74fe6b YQ |
1452 | if (!footnote_register_offset) |
1453 | footnote_register_offset = ++footnote_nr; | |
1454 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
af030b9a | 1455 | } |
4c74fe6b YQ |
1456 | else |
1457 | fprintf_unfiltered (file, " "); | |
1458 | register_offset = (descr->register_offset[regnum] | |
1459 | + descr->sizeof_register[regnum]); | |
af030b9a AC |
1460 | } |
1461 | ||
4c74fe6b YQ |
1462 | /* Size. */ |
1463 | if (regnum < 0) | |
1464 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1465 | else | |
1466 | fprintf_unfiltered (file, " %5ld", descr->sizeof_register[regnum]); | |
f3384e66 | 1467 | |
4c74fe6b | 1468 | /* Type. */ |
f3384e66 | 1469 | { |
4c74fe6b YQ |
1470 | const char *t; |
1471 | std::string name_holder; | |
b59ff9d5 | 1472 | |
4c74fe6b YQ |
1473 | if (regnum < 0) |
1474 | t = "Type"; | |
215c69dc YQ |
1475 | else |
1476 | { | |
4c74fe6b | 1477 | static const char blt[] = "builtin_type"; |
123f5f96 | 1478 | |
7d93a1e0 | 1479 | t = register_type (m_gdbarch, regnum)->name (); |
4c74fe6b | 1480 | if (t == NULL) |
f3384e66 | 1481 | { |
4c74fe6b YQ |
1482 | if (!footnote_register_type_name_null) |
1483 | footnote_register_type_name_null = ++footnote_nr; | |
1484 | name_holder = string_printf ("*%d", | |
1485 | footnote_register_type_name_null); | |
1486 | t = name_holder.c_str (); | |
f3384e66 | 1487 | } |
4c74fe6b YQ |
1488 | /* Chop a leading builtin_type. */ |
1489 | if (startswith (t, blt)) | |
1490 | t += strlen (blt); | |
f3384e66 | 1491 | } |
4c74fe6b | 1492 | fprintf_unfiltered (file, " %-15s", t); |
f3384e66 | 1493 | } |
f3384e66 | 1494 | |
4c74fe6b YQ |
1495 | /* Leading space always present. */ |
1496 | fprintf_unfiltered (file, " "); | |
af030b9a | 1497 | |
4c74fe6b | 1498 | dump_reg (file, regnum); |
ed4227b7 | 1499 | |
4c74fe6b | 1500 | fprintf_unfiltered (file, "\n"); |
ed4227b7 PA |
1501 | } |
1502 | ||
4c74fe6b YQ |
1503 | if (footnote_register_offset) |
1504 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1505 | footnote_register_offset); | |
1506 | if (footnote_register_type_name_null) | |
1507 | fprintf_unfiltered (file, | |
1508 | "*%d: Register type's name NULL.\n", | |
1509 | footnote_register_type_name_null); | |
c21236dc PA |
1510 | } |
1511 | ||
8248946c | 1512 | #if GDB_SELF_TEST |
268a13a5 | 1513 | #include "gdbsupport/selftest.h" |
1b30aaa5 | 1514 | #include "selftest-arch.h" |
ec7a5fcb | 1515 | #include "target-float.h" |
8248946c YQ |
1516 | |
1517 | namespace selftests { | |
1518 | ||
159ed7d9 SM |
1519 | static size_t |
1520 | regcaches_size () | |
8248946c | 1521 | { |
888bdb2b | 1522 | size_t size = 0; |
b70e516e SM |
1523 | |
1524 | for (auto pid_ptid_regc_map_it = regcaches.cbegin (); | |
1525 | pid_ptid_regc_map_it != regcaches.cend (); | |
1526 | ++pid_ptid_regc_map_it) | |
888bdb2b | 1527 | { |
b70e516e SM |
1528 | const pid_ptid_regcache_map &pid_ptid_regc_map |
1529 | = pid_ptid_regc_map_it->second; | |
1530 | ||
1531 | for (auto ptid_regc_map_it = pid_ptid_regc_map.cbegin (); | |
1532 | ptid_regc_map_it != pid_ptid_regc_map.cend (); | |
1533 | ++ptid_regc_map_it) | |
1534 | { | |
1535 | const ptid_regcache_map &ptid_regc_map | |
1536 | = ptid_regc_map_it->second; | |
1537 | ||
1538 | size += ptid_regc_map.size (); | |
1539 | } | |
888bdb2b SM |
1540 | } |
1541 | ||
1542 | return size; | |
159ed7d9 | 1543 | } |
8248946c | 1544 | |
cdd9148a SM |
1545 | /* Return the count of regcaches for (TARGET, PTID) in REGCACHES. */ |
1546 | ||
1547 | static int | |
1548 | regcache_count (process_stratum_target *target, ptid_t ptid) | |
1549 | { | |
b70e516e SM |
1550 | /* Look up map for target. */ |
1551 | auto pid_ptid_regc_map_it = regcaches.find (target); | |
1552 | if (pid_ptid_regc_map_it != regcaches.end ()) | |
cdd9148a | 1553 | { |
b70e516e | 1554 | pid_ptid_regcache_map &pid_ptid_regc_map = pid_ptid_regc_map_it->second; |
cdd9148a | 1555 | |
b70e516e SM |
1556 | /* Look map for pid. */ |
1557 | auto ptid_regc_map_it = pid_ptid_regc_map.find (ptid.pid ()); | |
1558 | if (ptid_regc_map_it != pid_ptid_regc_map.end ()) | |
1559 | { | |
1560 | ptid_regcache_map &ptid_regc_map = ptid_regc_map_it->second; | |
1561 | auto range = ptid_regc_map.equal_range (ptid); | |
1562 | ||
1563 | return std::distance (range.first, range.second); | |
1564 | } | |
cdd9148a SM |
1565 | } |
1566 | ||
1567 | return 0; | |
1568 | }; | |
1569 | ||
5b6d1e4f PA |
1570 | /* Wrapper around get_thread_arch_aspace_regcache that does some self checks. */ |
1571 | ||
1572 | static void | |
dd125343 SM |
1573 | get_thread_arch_aspace_regcache_and_check (process_stratum_target *target, |
1574 | ptid_t ptid) | |
5b6d1e4f | 1575 | { |
dd125343 SM |
1576 | /* We currently only test with a single gdbarch. Any gdbarch will do, so use |
1577 | the current inferior's gdbarch. Also use the current inferior's address | |
1578 | space. */ | |
1579 | gdbarch *arch = current_inferior ()->gdbarch; | |
1580 | address_space *aspace = current_inferior ()->aspace; | |
1581 | regcache *regcache | |
1582 | = get_thread_arch_aspace_regcache (target, ptid, arch, aspace); | |
1583 | ||
5b6d1e4f PA |
1584 | SELF_CHECK (regcache != NULL); |
1585 | SELF_CHECK (regcache->target () == target); | |
1586 | SELF_CHECK (regcache->ptid () == ptid); | |
dd125343 | 1587 | SELF_CHECK (regcache->arch () == arch); |
5b6d1e4f PA |
1588 | SELF_CHECK (regcache->aspace () == aspace); |
1589 | } | |
1590 | ||
cdd9148a SM |
1591 | /* The data that the regcaches selftests must hold onto for the duration of the |
1592 | test. */ | |
1593 | ||
1594 | struct regcache_test_data | |
8248946c | 1595 | { |
cdd9148a SM |
1596 | regcache_test_data () |
1597 | { | |
1598 | /* Ensure the regcaches container is empty at the start. */ | |
1599 | registers_changed (); | |
1600 | } | |
8248946c | 1601 | |
cdd9148a SM |
1602 | ~regcache_test_data () |
1603 | { | |
1604 | /* Make sure to leave the global regcaches container empty. */ | |
1605 | registers_changed (); | |
1606 | } | |
8248946c | 1607 | |
5b6d1e4f PA |
1608 | test_target_ops test_target1; |
1609 | test_target_ops test_target2; | |
cdd9148a SM |
1610 | }; |
1611 | ||
1612 | using regcache_test_data_up = std::unique_ptr<regcache_test_data>; | |
1613 | ||
1614 | /* Set up a few regcaches from two different targets, for use in | |
1615 | regcache-management tests. | |
1616 | ||
1617 | Return a pointer, because the `regcache_test_data` type is not moveable. */ | |
1618 | ||
1619 | static regcache_test_data_up | |
1620 | populate_regcaches_for_test () | |
1621 | { | |
1622 | regcache_test_data_up data (new regcache_test_data); | |
1623 | size_t expected_regcache_size = 0; | |
1624 | ||
1625 | SELF_CHECK (regcaches_size () == 0); | |
1626 | ||
1627 | /* Populate the regcache container with a few regcaches for the two test | |
1628 | targets. */ | |
1629 | for (int pid : { 1, 2 }) | |
1630 | { | |
1631 | for (long lwp : { 1, 2, 3 }) | |
1632 | { | |
1633 | get_thread_arch_aspace_regcache_and_check | |
1634 | (&data->test_target1, ptid_t (pid, lwp)); | |
1635 | expected_regcache_size++; | |
1636 | SELF_CHECK (regcaches_size () == expected_regcache_size); | |
1637 | ||
1638 | get_thread_arch_aspace_regcache_and_check | |
1639 | (&data->test_target2, ptid_t (pid, lwp)); | |
1640 | expected_regcache_size++; | |
1641 | SELF_CHECK (regcaches_size () == expected_regcache_size); | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | return data; | |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | get_thread_arch_aspace_regcache_test () | |
1650 | { | |
1651 | /* populate_regcaches_for_test already tests most of the | |
1652 | get_thread_arch_aspace_regcache functionality. */ | |
1653 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1654 | size_t regcaches_size_before = regcaches_size (); | |
1655 | ||
1656 | /* Test that getting an existing regcache doesn't create a new one. */ | |
1657 | get_thread_arch_aspace_regcache_and_check (&data->test_target1, ptid_t (2, 2)); | |
1658 | SELF_CHECK (regcaches_size () == regcaches_size_before); | |
1659 | } | |
1660 | ||
1661 | /* Test marking all regcaches of all targets as changed. */ | |
1662 | ||
1663 | static void | |
1664 | registers_changed_ptid_all_test () | |
1665 | { | |
1666 | regcache_test_data_up data = populate_regcaches_for_test (); | |
8248946c | 1667 | |
5b6d1e4f | 1668 | registers_changed_ptid (nullptr, minus_one_ptid); |
159ed7d9 | 1669 | SELF_CHECK (regcaches_size () == 0); |
cdd9148a | 1670 | } |
3ee93972 | 1671 | |
cdd9148a SM |
1672 | /* Test marking regcaches of a specific target as changed. */ |
1673 | ||
1674 | static void | |
1675 | registers_changed_ptid_target_test () | |
1676 | { | |
1677 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1678 | ||
1679 | registers_changed_ptid (&data->test_target1, minus_one_ptid); | |
1680 | SELF_CHECK (regcaches_size () == 6); | |
1681 | ||
1682 | /* Check that we deleted the regcache for the right target. */ | |
1683 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1684 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
1685 | } | |
1686 | ||
b70e516e SM |
1687 | /* Test marking regcaches of a specific (target, pid) as changed. */ |
1688 | ||
1689 | static void | |
1690 | registers_changed_ptid_target_pid_test () | |
1691 | { | |
1692 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1693 | ||
1694 | registers_changed_ptid (&data->test_target1, ptid_t (2)); | |
1695 | SELF_CHECK (regcaches_size () == 9); | |
1696 | ||
1697 | /* Regcaches from target1 should not exist, while regcaches from target2 | |
1698 | should exist. */ | |
1699 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1700 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
1701 | } | |
1702 | ||
cdd9148a SM |
1703 | /* Test marking regcaches of a specific (target, ptid) as changed. */ |
1704 | ||
1705 | static void | |
1706 | registers_changed_ptid_target_ptid_test () | |
1707 | { | |
1708 | regcache_test_data_up data = populate_regcaches_for_test (); | |
1709 | ||
1710 | registers_changed_ptid (&data->test_target1, ptid_t (2, 2)); | |
1711 | SELF_CHECK (regcaches_size () == 11); | |
1712 | ||
1713 | /* Check that we deleted the regcache for the right target. */ | |
1714 | SELF_CHECK (regcache_count (&data->test_target1, ptid_t (2, 2)) == 0); | |
1715 | SELF_CHECK (regcache_count (&data->test_target2, ptid_t (2, 2)) == 1); | |
8248946c YQ |
1716 | } |
1717 | ||
1b30aaa5 YQ |
1718 | class target_ops_no_register : public test_target_ops |
1719 | { | |
1720 | public: | |
1721 | target_ops_no_register () | |
1722 | : test_target_ops {} | |
f6ac5f3d | 1723 | {} |
1b30aaa5 YQ |
1724 | |
1725 | void reset () | |
1726 | { | |
1727 | fetch_registers_called = 0; | |
1728 | store_registers_called = 0; | |
1729 | xfer_partial_called = 0; | |
1730 | } | |
1731 | ||
f6ac5f3d PA |
1732 | void fetch_registers (regcache *regs, int regno) override; |
1733 | void store_registers (regcache *regs, int regno) override; | |
1734 | ||
1735 | enum target_xfer_status xfer_partial (enum target_object object, | |
1736 | const char *annex, gdb_byte *readbuf, | |
1737 | const gdb_byte *writebuf, | |
1738 | ULONGEST offset, ULONGEST len, | |
1739 | ULONGEST *xfered_len) override; | |
1740 | ||
1b30aaa5 YQ |
1741 | unsigned int fetch_registers_called = 0; |
1742 | unsigned int store_registers_called = 0; | |
1743 | unsigned int xfer_partial_called = 0; | |
1744 | }; | |
1745 | ||
f6ac5f3d PA |
1746 | void |
1747 | target_ops_no_register::fetch_registers (regcache *regs, int regno) | |
1b30aaa5 | 1748 | { |
1b30aaa5 YQ |
1749 | /* Mark register available. */ |
1750 | regs->raw_supply_zeroed (regno); | |
f6ac5f3d | 1751 | this->fetch_registers_called++; |
1b30aaa5 YQ |
1752 | } |
1753 | ||
f6ac5f3d PA |
1754 | void |
1755 | target_ops_no_register::store_registers (regcache *regs, int regno) | |
1b30aaa5 | 1756 | { |
f6ac5f3d | 1757 | this->store_registers_called++; |
1b30aaa5 YQ |
1758 | } |
1759 | ||
f6ac5f3d PA |
1760 | enum target_xfer_status |
1761 | target_ops_no_register::xfer_partial (enum target_object object, | |
1762 | const char *annex, gdb_byte *readbuf, | |
1763 | const gdb_byte *writebuf, | |
1764 | ULONGEST offset, ULONGEST len, | |
1765 | ULONGEST *xfered_len) | |
1b30aaa5 | 1766 | { |
f6ac5f3d | 1767 | this->xfer_partial_called++; |
1b30aaa5 YQ |
1768 | |
1769 | *xfered_len = len; | |
1770 | return TARGET_XFER_OK; | |
1771 | } | |
1772 | ||
1773 | class readwrite_regcache : public regcache | |
1774 | { | |
1775 | public: | |
5b6d1e4f PA |
1776 | readwrite_regcache (process_stratum_target *target, |
1777 | struct gdbarch *gdbarch) | |
1778 | : regcache (target, gdbarch, nullptr) | |
1b30aaa5 YQ |
1779 | {} |
1780 | }; | |
1781 | ||
1782 | /* Test regcache::cooked_read gets registers from raw registers and | |
1783 | memory instead of target to_{fetch,store}_registers. */ | |
1784 | ||
1785 | static void | |
1786 | cooked_read_test (struct gdbarch *gdbarch) | |
1787 | { | |
236ef034 | 1788 | scoped_mock_context<target_ops_no_register> mockctx (gdbarch); |
1b30aaa5 YQ |
1789 | |
1790 | /* Test that read one raw register from regcache_no_target will go | |
1791 | to the target layer. */ | |
1b30aaa5 YQ |
1792 | |
1793 | /* Find a raw register which size isn't zero. */ | |
b926417a TT |
1794 | int nonzero_regnum; |
1795 | for (nonzero_regnum = 0; | |
1796 | nonzero_regnum < gdbarch_num_regs (gdbarch); | |
1797 | nonzero_regnum++) | |
1b30aaa5 | 1798 | { |
b926417a | 1799 | if (register_size (gdbarch, nonzero_regnum) != 0) |
1b30aaa5 YQ |
1800 | break; |
1801 | } | |
1802 | ||
236ef034 | 1803 | readwrite_regcache readwrite (&mockctx.mock_target, gdbarch); |
b926417a | 1804 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, nonzero_regnum)); |
1b30aaa5 | 1805 | |
b926417a | 1806 | readwrite.raw_read (nonzero_regnum, buf.data ()); |
1b30aaa5 YQ |
1807 | |
1808 | /* raw_read calls target_fetch_registers. */ | |
236ef034 PA |
1809 | SELF_CHECK (mockctx.mock_target.fetch_registers_called > 0); |
1810 | mockctx.mock_target.reset (); | |
1b30aaa5 YQ |
1811 | |
1812 | /* Mark all raw registers valid, so the following raw registers | |
1813 | accesses won't go to target. */ | |
1814 | for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
1815 | readwrite.raw_update (i); | |
1816 | ||
236ef034 | 1817 | mockctx.mock_target.reset (); |
1b30aaa5 YQ |
1818 | /* Then, read all raw and pseudo registers, and don't expect calling |
1819 | to_{fetch,store}_registers. */ | |
f6efe3f8 | 1820 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
1b30aaa5 YQ |
1821 | { |
1822 | if (register_size (gdbarch, regnum) == 0) | |
1823 | continue; | |
1824 | ||
b926417a | 1825 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
1b30aaa5 | 1826 | |
b926417a TT |
1827 | SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum, |
1828 | inner_buf.data ())); | |
1b30aaa5 | 1829 | |
236ef034 PA |
1830 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1831 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1832 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
1b30aaa5 | 1833 | |
236ef034 | 1834 | mockctx.mock_target.reset (); |
1b30aaa5 | 1835 | } |
a63f2d2f | 1836 | |
215c69dc | 1837 | readonly_detached_regcache readonly (readwrite); |
a63f2d2f YQ |
1838 | |
1839 | /* GDB may go to target layer to fetch all registers and memory for | |
1840 | readonly regcache. */ | |
236ef034 | 1841 | mockctx.mock_target.reset (); |
a63f2d2f | 1842 | |
f6efe3f8 | 1843 | for (int regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
a63f2d2f | 1844 | { |
a63f2d2f YQ |
1845 | if (register_size (gdbarch, regnum) == 0) |
1846 | continue; | |
1847 | ||
b926417a | 1848 | gdb::def_vector<gdb_byte> inner_buf (register_size (gdbarch, regnum)); |
a63f2d2f | 1849 | enum register_status status = readonly.cooked_read (regnum, |
b926417a | 1850 | inner_buf.data ()); |
a63f2d2f YQ |
1851 | |
1852 | if (regnum < gdbarch_num_regs (gdbarch)) | |
1853 | { | |
1854 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1855 | ||
1856 | if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 | |
1857 | || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh | |
1858 | || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 | |
1859 | || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep | |
1860 | || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 | |
1861 | || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 | |
ea005f31 | 1862 | || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score |
bea556ab | 1863 | || bfd_arch == bfd_arch_riscv || bfd_arch == bfd_arch_csky) |
a63f2d2f YQ |
1864 | { |
1865 | /* Raw registers. If raw registers are not in save_reggroup, | |
1866 | their status are unknown. */ | |
1867 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1868 | SELF_CHECK (status == REG_VALID); | |
1869 | else | |
1870 | SELF_CHECK (status == REG_UNKNOWN); | |
1871 | } | |
1872 | else | |
1873 | SELF_CHECK (status == REG_VALID); | |
1874 | } | |
1875 | else | |
1876 | { | |
1877 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1878 | SELF_CHECK (status == REG_VALID); | |
1879 | else | |
1880 | { | |
1881 | /* If pseudo registers are not in save_reggroup, some of | |
1882 | them can be computed from saved raw registers, but some | |
1883 | of them are unknown. */ | |
1884 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1885 | ||
1886 | if (bfd_arch == bfd_arch_frv | |
1887 | || bfd_arch == bfd_arch_m32c | |
1888 | || bfd_arch == bfd_arch_mep | |
1889 | || bfd_arch == bfd_arch_sh) | |
1890 | SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); | |
1891 | else if (bfd_arch == bfd_arch_mips | |
1892 | || bfd_arch == bfd_arch_h8300) | |
1893 | SELF_CHECK (status == REG_UNKNOWN); | |
1894 | else | |
1895 | SELF_CHECK (status == REG_VALID); | |
1896 | } | |
1897 | } | |
1898 | ||
236ef034 PA |
1899 | SELF_CHECK (mockctx.mock_target.fetch_registers_called == 0); |
1900 | SELF_CHECK (mockctx.mock_target.store_registers_called == 0); | |
1901 | SELF_CHECK (mockctx.mock_target.xfer_partial_called == 0); | |
a63f2d2f | 1902 | |
236ef034 | 1903 | mockctx.mock_target.reset (); |
a63f2d2f | 1904 | } |
1b30aaa5 YQ |
1905 | } |
1906 | ||
ec7a5fcb YQ |
1907 | /* Test regcache::cooked_write by writing some expected contents to |
1908 | registers, and checking that contents read from registers and the | |
1909 | expected contents are the same. */ | |
1910 | ||
1911 | static void | |
1912 | cooked_write_test (struct gdbarch *gdbarch) | |
1913 | { | |
1914 | /* Error out if debugging something, because we're going to push the | |
1915 | test target, which would pop any existing target. */ | |
66b4deae | 1916 | if (current_top_target ()->stratum () >= process_stratum) |
ec7a5fcb YQ |
1917 | error (_("target already pushed")); |
1918 | ||
1919 | /* Create a mock environment. A process_stratum target pushed. */ | |
1920 | ||
1921 | target_ops_no_register mock_target; | |
1922 | ||
1923 | /* Push the process_stratum target so we can mock accessing | |
1924 | registers. */ | |
1925 | push_target (&mock_target); | |
1926 | ||
1927 | /* Pop it again on exit (return/exception). */ | |
1928 | struct on_exit | |
1929 | { | |
1930 | ~on_exit () | |
1931 | { | |
1932 | pop_all_targets_at_and_above (process_stratum); | |
1933 | } | |
1934 | } pop_targets; | |
1935 | ||
5b6d1e4f | 1936 | readwrite_regcache readwrite (&mock_target, gdbarch); |
ec7a5fcb | 1937 | |
f6efe3f8 | 1938 | const int num_regs = gdbarch_num_cooked_regs (gdbarch); |
ec7a5fcb YQ |
1939 | |
1940 | for (auto regnum = 0; regnum < num_regs; regnum++) | |
1941 | { | |
1942 | if (register_size (gdbarch, regnum) == 0 | |
1943 | || gdbarch_cannot_store_register (gdbarch, regnum)) | |
1944 | continue; | |
1945 | ||
1946 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1947 | ||
abf516c6 UW |
1948 | if (bfd_arch == bfd_arch_sparc |
1949 | /* SPARC64_CWP_REGNUM, SPARC64_PSTATE_REGNUM, | |
1950 | SPARC64_ASI_REGNUM and SPARC64_CCR_REGNUM are hard to test. */ | |
1951 | && gdbarch_ptr_bit (gdbarch) == 64 | |
1952 | && (regnum >= gdbarch_num_regs (gdbarch) | |
1953 | && regnum <= gdbarch_num_regs (gdbarch) + 4)) | |
ec7a5fcb YQ |
1954 | continue; |
1955 | ||
1956 | std::vector<gdb_byte> expected (register_size (gdbarch, regnum), 0); | |
1957 | std::vector<gdb_byte> buf (register_size (gdbarch, regnum), 0); | |
1958 | const auto type = register_type (gdbarch, regnum); | |
1959 | ||
78134374 SM |
1960 | if (type->code () == TYPE_CODE_FLT |
1961 | || type->code () == TYPE_CODE_DECFLOAT) | |
ec7a5fcb YQ |
1962 | { |
1963 | /* Generate valid float format. */ | |
1964 | target_float_from_string (expected.data (), type, "1.25"); | |
1965 | } | |
78134374 SM |
1966 | else if (type->code () == TYPE_CODE_INT |
1967 | || type->code () == TYPE_CODE_ARRAY | |
1968 | || type->code () == TYPE_CODE_PTR | |
1969 | || type->code () == TYPE_CODE_UNION | |
1970 | || type->code () == TYPE_CODE_STRUCT) | |
ec7a5fcb YQ |
1971 | { |
1972 | if (bfd_arch == bfd_arch_ia64 | |
1973 | || (regnum >= gdbarch_num_regs (gdbarch) | |
1974 | && (bfd_arch == bfd_arch_xtensa | |
1975 | || bfd_arch == bfd_arch_bfin | |
1976 | || bfd_arch == bfd_arch_m32c | |
1977 | /* m68hc11 pseudo registers are in memory. */ | |
1978 | || bfd_arch == bfd_arch_m68hc11 | |
1979 | || bfd_arch == bfd_arch_m68hc12 | |
1980 | || bfd_arch == bfd_arch_s390)) | |
1981 | || (bfd_arch == bfd_arch_frv | |
1982 | /* FRV pseudo registers except iacc0. */ | |
1983 | && regnum > gdbarch_num_regs (gdbarch))) | |
1984 | { | |
1985 | /* Skip setting the expected values for some architecture | |
1986 | registers. */ | |
1987 | } | |
1988 | else if (bfd_arch == bfd_arch_rl78 && regnum == 40) | |
1989 | { | |
1990 | /* RL78_PC_REGNUM */ | |
1991 | for (auto j = 0; j < register_size (gdbarch, regnum) - 1; j++) | |
1992 | expected[j] = j; | |
1993 | } | |
1994 | else | |
1995 | { | |
1996 | for (auto j = 0; j < register_size (gdbarch, regnum); j++) | |
1997 | expected[j] = j; | |
1998 | } | |
1999 | } | |
78134374 | 2000 | else if (type->code () == TYPE_CODE_FLAGS) |
ec7a5fcb YQ |
2001 | { |
2002 | /* No idea how to test flags. */ | |
2003 | continue; | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | /* If we don't know how to create the expected value for the | |
2008 | this type, make it fail. */ | |
2009 | SELF_CHECK (0); | |
2010 | } | |
2011 | ||
2012 | readwrite.cooked_write (regnum, expected.data ()); | |
2013 | ||
2014 | SELF_CHECK (readwrite.cooked_read (regnum, buf.data ()) == REG_VALID); | |
2015 | SELF_CHECK (expected == buf); | |
2016 | } | |
2017 | } | |
2018 | ||
b161a60d SM |
2019 | /* Verify that when two threads with the same ptid exist (from two different |
2020 | targets) and one of them changes ptid, we only update the appropriate | |
2021 | regcaches. */ | |
2022 | ||
2023 | static void | |
2024 | regcache_thread_ptid_changed () | |
2025 | { | |
2026 | /* This test relies on the global regcache list to initially be empty. */ | |
2027 | registers_changed (); | |
2028 | ||
2029 | /* Any arch will do. */ | |
2030 | gdbarch *arch = current_inferior ()->gdbarch; | |
2031 | ||
2032 | /* Prepare two targets with one thread each, with the same ptid. */ | |
2033 | scoped_mock_context<test_target_ops> target1 (arch); | |
2034 | scoped_mock_context<test_target_ops> target2 (arch); | |
2035 | target2.mock_inferior.next = &target1.mock_inferior; | |
2036 | ||
2037 | ptid_t old_ptid (111, 222); | |
2038 | ptid_t new_ptid (111, 333); | |
2039 | ||
2040 | target1.mock_inferior.pid = old_ptid.pid (); | |
2041 | target1.mock_thread.ptid = old_ptid; | |
2042 | target2.mock_inferior.pid = old_ptid.pid (); | |
2043 | target2.mock_thread.ptid = old_ptid; | |
2044 | ||
2045 | gdb_assert (regcaches.empty ()); | |
2046 | ||
2047 | /* Populate the regcaches container. */ | |
2048 | get_thread_arch_aspace_regcache (&target1.mock_target, old_ptid, arch, | |
2049 | nullptr); | |
2050 | get_thread_arch_aspace_regcache (&target2.mock_target, old_ptid, arch, | |
2051 | nullptr); | |
2052 | ||
888bdb2b SM |
2053 | gdb_assert (regcaches.size () == 2); |
2054 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 1); | |
2055 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 0); | |
2056 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
2057 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
2058 | |
2059 | thread_change_ptid (&target1.mock_target, old_ptid, new_ptid); | |
2060 | ||
888bdb2b SM |
2061 | gdb_assert (regcaches.size () == 2); |
2062 | gdb_assert (regcache_count (&target1.mock_target, old_ptid) == 0); | |
2063 | gdb_assert (regcache_count (&target1.mock_target, new_ptid) == 1); | |
2064 | gdb_assert (regcache_count (&target2.mock_target, old_ptid) == 1); | |
2065 | gdb_assert (regcache_count (&target2.mock_target, new_ptid) == 0); | |
b161a60d SM |
2066 | |
2067 | /* Leave the regcache list empty. */ | |
2068 | registers_changed (); | |
2069 | gdb_assert (regcaches.empty ()); | |
2070 | } | |
2071 | ||
8248946c YQ |
2072 | } // namespace selftests |
2073 | #endif /* GDB_SELF_TEST */ | |
2074 | ||
6c265988 | 2075 | void _initialize_regcache (); |
32178cab | 2076 | void |
6c265988 | 2077 | _initialize_regcache () |
32178cab | 2078 | { |
3e43a32a MS |
2079 | regcache_descr_handle |
2080 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 2081 | |
76727919 | 2082 | gdb::observers::target_changed.attach (regcache_observer_target_changed); |
159ed7d9 | 2083 | gdb::observers::thread_ptid_changed.attach (regcache_thread_ptid_changed); |
f4c5303c | 2084 | |
705152c5 | 2085 | add_com ("flushregs", class_maintenance, reg_flush_command, |
590042fc | 2086 | _("Force gdb to flush its register cache (maintainer command).")); |
39f77062 | 2087 | |
8248946c | 2088 | #if GDB_SELF_TEST |
cdd9148a SM |
2089 | selftests::register_test ("get_thread_arch_aspace_regcache", |
2090 | selftests::get_thread_arch_aspace_regcache_test); | |
2091 | selftests::register_test ("registers_changed_ptid_all", | |
2092 | selftests::registers_changed_ptid_all_test); | |
b70e516e SM |
2093 | selftests::register_test ("registers_changed_ptid_target", |
2094 | selftests::registers_changed_ptid_target_test); | |
2095 | selftests::register_test ("registers_changed_ptid_target_pid", | |
2096 | selftests::registers_changed_ptid_target_pid_test); | |
cdd9148a SM |
2097 | selftests::register_test ("registers_changed_ptid_target_ptid", |
2098 | selftests::registers_changed_ptid_target_ptid_test); | |
1b30aaa5 YQ |
2099 | |
2100 | selftests::register_test_foreach_arch ("regcache::cooked_read_test", | |
2101 | selftests::cooked_read_test); | |
ec7a5fcb YQ |
2102 | selftests::register_test_foreach_arch ("regcache::cooked_write_test", |
2103 | selftests::cooked_write_test); | |
b161a60d SM |
2104 | selftests::register_test ("regcache_thread_ptid_changed", |
2105 | selftests::regcache_thread_ptid_changed); | |
8248946c | 2106 | #endif |
32178cab | 2107 | } |