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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
32178cab MS |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
32178cab MS |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
32178cab MS |
19 | |
20 | #include "defs.h" | |
32178cab MS |
21 | #include "inferior.h" |
22 | #include "target.h" | |
23 | #include "gdbarch.h" | |
705152c5 | 24 | #include "gdbcmd.h" |
4e052eda | 25 | #include "regcache.h" |
b59ff9d5 | 26 | #include "reggroups.h" |
f4c5303c | 27 | #include "observer.h" |
c21236dc | 28 | #include "remote.h" |
d3eaaf66 | 29 | #include "valprint.h" |
0b309272 | 30 | #include "regset.h" |
94bb8dfe | 31 | #include <forward_list> |
32178cab MS |
32 | |
33 | /* | |
34 | * DATA STRUCTURE | |
35 | * | |
36 | * Here is the actual register cache. | |
37 | */ | |
38 | ||
3fadccb3 | 39 | /* Per-architecture object describing the layout of a register cache. |
0df8b418 | 40 | Computed once when the architecture is created. */ |
3fadccb3 AC |
41 | |
42 | struct gdbarch_data *regcache_descr_handle; | |
43 | ||
44 | struct regcache_descr | |
45 | { | |
46 | /* The architecture this descriptor belongs to. */ | |
47 | struct gdbarch *gdbarch; | |
48 | ||
bb1db049 AC |
49 | /* The raw register cache. Each raw (or hard) register is supplied |
50 | by the target interface. The raw cache should not contain | |
51 | redundant information - if the PC is constructed from two | |
d2f0b918 | 52 | registers then those registers and not the PC lives in the raw |
bb1db049 | 53 | cache. */ |
3fadccb3 | 54 | long sizeof_raw_registers; |
3fadccb3 | 55 | |
d138e37a AC |
56 | /* The cooked register space. Each cooked register in the range |
57 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
58 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 59 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 60 | both raw registers and memory by the architecture methods |
02f60eae | 61 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 62 | int nr_cooked_registers; |
067df2e5 | 63 | long sizeof_cooked_registers; |
d138e37a | 64 | |
86d31898 | 65 | /* Offset and size (in 8 bit bytes), of each register in the |
d138e37a | 66 | register cache. All registers (including those in the range |
99e42fd8 PA |
67 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an |
68 | offset. */ | |
3fadccb3 | 69 | long *register_offset; |
3fadccb3 | 70 | long *sizeof_register; |
3fadccb3 | 71 | |
bb425013 AC |
72 | /* Cached table containing the type of each register. */ |
73 | struct type **register_type; | |
3fadccb3 AC |
74 | }; |
75 | ||
3fadccb3 AC |
76 | static void * |
77 | init_regcache_descr (struct gdbarch *gdbarch) | |
78 | { | |
79 | int i; | |
80 | struct regcache_descr *descr; | |
81 | gdb_assert (gdbarch != NULL); | |
82 | ||
bb425013 | 83 | /* Create an initial, zero filled, table. */ |
116f06ea | 84 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 85 | descr->gdbarch = gdbarch; |
3fadccb3 | 86 | |
d138e37a AC |
87 | /* Total size of the register space. The raw registers are mapped |
88 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 89 | either mapped onto raw-registers or memory. */ |
214e098a UW |
90 | descr->nr_cooked_registers = gdbarch_num_regs (gdbarch) |
91 | + gdbarch_num_pseudo_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 | |
bb425013 AC |
105 | NOTE: cagney/2002-05-22: Only register_type() is used when |
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]; | |
122 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); | |
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]; | |
123a958e | 132 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 | 133 | } |
99e42fd8 | 134 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 135 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
136 | } |
137 | ||
3fadccb3 AC |
138 | return descr; |
139 | } | |
140 | ||
141 | static struct regcache_descr * | |
142 | regcache_descr (struct gdbarch *gdbarch) | |
143 | { | |
19ba03f4 SM |
144 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
145 | regcache_descr_handle); | |
3fadccb3 AC |
146 | } |
147 | ||
bb425013 AC |
148 | /* Utility functions returning useful register attributes stored in |
149 | the regcache descr. */ | |
150 | ||
151 | struct type * | |
152 | register_type (struct gdbarch *gdbarch, int regnum) | |
153 | { | |
154 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 155 | |
bb425013 AC |
156 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
157 | return descr->register_type[regnum]; | |
158 | } | |
159 | ||
0ed04cce AC |
160 | /* Utility functions returning useful register attributes stored in |
161 | the regcache descr. */ | |
162 | ||
08a617da AC |
163 | int |
164 | register_size (struct gdbarch *gdbarch, int regnum) | |
165 | { | |
166 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
167 | int size; | |
123f5f96 | 168 | |
f57d151a | 169 | gdb_assert (regnum >= 0 |
214e098a UW |
170 | && regnum < (gdbarch_num_regs (gdbarch) |
171 | + gdbarch_num_pseudo_regs (gdbarch))); | |
08a617da | 172 | size = descr->sizeof_register[regnum]; |
08a617da AC |
173 | return size; |
174 | } | |
175 | ||
8d689ee5 YQ |
176 | /* See common/common-regcache.h. */ |
177 | ||
178 | int | |
179 | regcache_register_size (const struct regcache *regcache, int n) | |
180 | { | |
ac7936df | 181 | return register_size (regcache->arch (), n); |
8d689ee5 YQ |
182 | } |
183 | ||
31716595 YQ |
184 | reg_buffer::reg_buffer (gdbarch *gdbarch, bool has_pseudo) |
185 | : m_has_pseudo (has_pseudo) | |
3fadccb3 | 186 | { |
ef79d9a3 YQ |
187 | gdb_assert (gdbarch != NULL); |
188 | m_descr = regcache_descr (gdbarch); | |
4621115f | 189 | |
31716595 | 190 | if (has_pseudo) |
4621115f | 191 | { |
ef79d9a3 YQ |
192 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers); |
193 | m_register_status = XCNEWVEC (signed char, | |
6c5218df | 194 | m_descr->nr_cooked_registers); |
4621115f YQ |
195 | } |
196 | else | |
197 | { | |
ef79d9a3 | 198 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers); |
d999647b | 199 | m_register_status = XCNEWVEC (signed char, gdbarch_num_regs (gdbarch)); |
4621115f | 200 | } |
31716595 YQ |
201 | } |
202 | ||
203 | regcache::regcache (gdbarch *gdbarch, const address_space *aspace_, | |
204 | bool readonly_p_) | |
205 | /* The register buffers. A read-only register cache can hold the | |
206 | full [0 .. gdbarch_num_regs + gdbarch_num_pseudo_regs) while a | |
207 | read/write register cache can only hold [0 .. gdbarch_num_regs). */ | |
c8ec2f33 | 208 | : detached_regcache (gdbarch, readonly_p_), |
31716595 YQ |
209 | m_aspace (aspace_), m_readonly_p (readonly_p_) |
210 | { | |
ef79d9a3 YQ |
211 | m_ptid = minus_one_ptid; |
212 | } | |
4621115f | 213 | |
deb1fa3e YQ |
214 | static enum register_status |
215 | do_cooked_read (void *src, int regnum, gdb_byte *buf) | |
216 | { | |
217 | struct regcache *regcache = (struct regcache *) src; | |
218 | ||
219 | return regcache_cooked_read (regcache, regnum, buf); | |
220 | } | |
221 | ||
daf6667d YQ |
222 | readonly_detached_regcache::readonly_detached_regcache (const regcache &src) |
223 | : readonly_detached_regcache (src.arch (), do_cooked_read, (void *) &src) | |
224 | { | |
225 | } | |
226 | ||
ef79d9a3 | 227 | gdbarch * |
31716595 | 228 | reg_buffer::arch () const |
ef79d9a3 YQ |
229 | { |
230 | return m_descr->gdbarch; | |
231 | } | |
3fadccb3 | 232 | |
ddaaf0fb SM |
233 | /* See regcache.h. */ |
234 | ||
235 | ptid_t | |
236 | regcache_get_ptid (const struct regcache *regcache) | |
237 | { | |
ef79d9a3 | 238 | gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid)); |
ddaaf0fb | 239 | |
ef79d9a3 | 240 | return regcache->ptid (); |
ddaaf0fb SM |
241 | } |
242 | ||
b292235f | 243 | /* Cleanup class for invalidating a register. */ |
b94ade42 | 244 | |
b292235f | 245 | class regcache_invalidator |
b94ade42 | 246 | { |
b292235f | 247 | public: |
b94ade42 | 248 | |
b292235f TT |
249 | regcache_invalidator (struct regcache *regcache, int regnum) |
250 | : m_regcache (regcache), | |
251 | m_regnum (regnum) | |
252 | { | |
253 | } | |
b94ade42 | 254 | |
b292235f TT |
255 | ~regcache_invalidator () |
256 | { | |
257 | if (m_regcache != nullptr) | |
258 | regcache_invalidate (m_regcache, m_regnum); | |
259 | } | |
b94ade42 | 260 | |
b292235f | 261 | DISABLE_COPY_AND_ASSIGN (regcache_invalidator); |
b94ade42 | 262 | |
b292235f TT |
263 | void release () |
264 | { | |
265 | m_regcache = nullptr; | |
266 | } | |
267 | ||
268 | private: | |
269 | ||
270 | struct regcache *m_regcache; | |
271 | int m_regnum; | |
272 | }; | |
b94ade42 | 273 | |
51b1fe4e AC |
274 | /* Return a pointer to register REGNUM's buffer cache. */ |
275 | ||
ef79d9a3 | 276 | gdb_byte * |
31716595 | 277 | reg_buffer::register_buffer (int regnum) const |
51b1fe4e | 278 | { |
ef79d9a3 | 279 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
280 | } |
281 | ||
ef79d9a3 | 282 | void |
daf6667d YQ |
283 | reg_buffer::save (regcache_cooked_read_ftype *cooked_read, |
284 | void *src) | |
ef79d9a3 YQ |
285 | { |
286 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 287 | int regnum; |
123f5f96 | 288 | |
daf6667d YQ |
289 | /* It should have pseudo registers. */ |
290 | gdb_assert (m_has_pseudo); | |
2d28509a | 291 | /* Clear the dest. */ |
ef79d9a3 | 292 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
6c5218df | 293 | memset (m_register_status, 0, m_descr->nr_cooked_registers); |
2d28509a | 294 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
295 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
296 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 297 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 298 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
299 | { |
300 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
301 | { | |
50d6adef AH |
302 | gdb_byte *dst_buf = register_buffer (regnum); |
303 | enum register_status status = cooked_read (src, regnum, dst_buf); | |
123f5f96 | 304 | |
50d6adef AH |
305 | gdb_assert (status != REG_UNKNOWN); |
306 | ||
307 | if (status != REG_VALID) | |
308 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 309 | |
ef79d9a3 | 310 | m_register_status[regnum] = status; |
2d28509a AC |
311 | } |
312 | } | |
313 | } | |
314 | ||
ef79d9a3 | 315 | void |
daf6667d | 316 | regcache::restore (readonly_detached_regcache *src) |
2d28509a | 317 | { |
ef79d9a3 | 318 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 319 | int regnum; |
123f5f96 | 320 | |
fc5b8736 | 321 | gdb_assert (src != NULL); |
ef79d9a3 | 322 | gdb_assert (!m_readonly_p); |
daf6667d | 323 | gdb_assert (src->m_has_pseudo); |
fc5b8736 YQ |
324 | |
325 | gdb_assert (gdbarch == src->arch ()); | |
326 | ||
2d28509a | 327 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
328 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
329 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 330 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 331 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 332 | { |
5602984a | 333 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 334 | { |
ef79d9a3 YQ |
335 | if (src->m_register_status[regnum] == REG_VALID) |
336 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
337 | } |
338 | } | |
339 | } | |
340 | ||
39181896 | 341 | enum register_status |
ee99023e | 342 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
343 | { |
344 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
345 | return regcache->get_register_status (regnum); |
346 | } | |
347 | ||
348 | enum register_status | |
c8ec2f33 | 349 | reg_buffer::get_register_status (int regnum) const |
ef79d9a3 | 350 | { |
c8ec2f33 | 351 | assert_regnum (regnum); |
6ed7ea50 | 352 | |
ef79d9a3 | 353 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
354 | } |
355 | ||
9c5ea4d9 UW |
356 | void |
357 | regcache_invalidate (struct regcache *regcache, int regnum) | |
358 | { | |
359 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 360 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
361 | } |
362 | ||
ef79d9a3 YQ |
363 | void |
364 | regcache::invalidate (int regnum) | |
365 | { | |
ef79d9a3 | 366 | gdb_assert (!m_readonly_p); |
4e888c28 | 367 | assert_regnum (regnum); |
ef79d9a3 YQ |
368 | m_register_status[regnum] = REG_UNKNOWN; |
369 | } | |
9c5ea4d9 | 370 | |
4e888c28 | 371 | void |
31716595 | 372 | reg_buffer::assert_regnum (int regnum) const |
4e888c28 | 373 | { |
31716595 YQ |
374 | gdb_assert (regnum >= 0); |
375 | if (m_has_pseudo) | |
376 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
377 | else | |
378 | gdb_assert (regnum < gdbarch_num_regs (arch ())); | |
4e888c28 YQ |
379 | } |
380 | ||
3fadccb3 | 381 | /* Global structure containing the current regcache. */ |
3fadccb3 | 382 | |
5ebd2499 | 383 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
384 | recording if the register values have been changed (eg. by the |
385 | user). Therefore all registers must be written back to the | |
386 | target when appropriate. */ | |
e521e87e | 387 | std::forward_list<regcache *> regcache::current_regcache; |
c2250ad1 UW |
388 | |
389 | struct regcache * | |
e2d96639 YQ |
390 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
391 | struct address_space *aspace) | |
c2250ad1 | 392 | { |
e521e87e | 393 | for (const auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
394 | if (ptid_equal (regcache->ptid (), ptid) && regcache->arch () == gdbarch) |
395 | return regcache; | |
594f7785 | 396 | |
94bb8dfe | 397 | regcache *new_regcache = new regcache (gdbarch, aspace, false); |
594f7785 | 398 | |
e521e87e | 399 | regcache::current_regcache.push_front (new_regcache); |
ef79d9a3 | 400 | new_regcache->set_ptid (ptid); |
e2d96639 | 401 | |
e2d96639 YQ |
402 | return new_regcache; |
403 | } | |
404 | ||
405 | struct regcache * | |
406 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
407 | { | |
ed4227b7 | 408 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 409 | |
e2d96639 | 410 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
411 | } |
412 | ||
c2250ad1 UW |
413 | static ptid_t current_thread_ptid; |
414 | static struct gdbarch *current_thread_arch; | |
415 | ||
416 | struct regcache * | |
417 | get_thread_regcache (ptid_t ptid) | |
418 | { | |
419 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
420 | { | |
421 | current_thread_ptid = ptid; | |
422 | current_thread_arch = target_thread_architecture (ptid); | |
423 | } | |
424 | ||
425 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
426 | } | |
427 | ||
428 | struct regcache * | |
429 | get_current_regcache (void) | |
594f7785 UW |
430 | { |
431 | return get_thread_regcache (inferior_ptid); | |
432 | } | |
32178cab | 433 | |
361c8ade GB |
434 | /* See common/common-regcache.h. */ |
435 | ||
436 | struct regcache * | |
437 | get_thread_regcache_for_ptid (ptid_t ptid) | |
438 | { | |
439 | return get_thread_regcache (ptid); | |
440 | } | |
32178cab | 441 | |
f4c5303c OF |
442 | /* Observer for the target_changed event. */ |
443 | ||
2c0b251b | 444 | static void |
f4c5303c OF |
445 | regcache_observer_target_changed (struct target_ops *target) |
446 | { | |
447 | registers_changed (); | |
448 | } | |
449 | ||
5231c1fd PA |
450 | /* Update global variables old ptids to hold NEW_PTID if they were |
451 | holding OLD_PTID. */ | |
e521e87e YQ |
452 | void |
453 | regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 454 | { |
e521e87e | 455 | for (auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
456 | { |
457 | if (ptid_equal (regcache->ptid (), old_ptid)) | |
458 | regcache->set_ptid (new_ptid); | |
459 | } | |
5231c1fd PA |
460 | } |
461 | ||
32178cab MS |
462 | /* Low level examining and depositing of registers. |
463 | ||
464 | The caller is responsible for making sure that the inferior is | |
465 | stopped before calling the fetching routines, or it will get | |
466 | garbage. (a change from GDB version 3, in which the caller got the | |
467 | value from the last stop). */ | |
468 | ||
469 | /* REGISTERS_CHANGED () | |
470 | ||
471 | Indicate that registers may have changed, so invalidate the cache. */ | |
472 | ||
473 | void | |
e66408ed | 474 | registers_changed_ptid (ptid_t ptid) |
32178cab | 475 | { |
e521e87e | 476 | for (auto oit = regcache::current_regcache.before_begin (), |
94bb8dfe | 477 | it = std::next (oit); |
e521e87e | 478 | it != regcache::current_regcache.end (); |
94bb8dfe | 479 | ) |
c2250ad1 | 480 | { |
94bb8dfe | 481 | if (ptid_match ((*it)->ptid (), ptid)) |
e66408ed | 482 | { |
94bb8dfe | 483 | delete *it; |
e521e87e | 484 | it = regcache::current_regcache.erase_after (oit); |
e66408ed | 485 | } |
94bb8dfe YQ |
486 | else |
487 | oit = it++; | |
c2250ad1 | 488 | } |
32178cab | 489 | |
c34fd852 | 490 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
491 | { |
492 | current_thread_ptid = null_ptid; | |
493 | current_thread_arch = NULL; | |
494 | } | |
32178cab | 495 | |
c34fd852 | 496 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
497 | { |
498 | /* We just deleted the regcache of the current thread. Need to | |
499 | forget about any frames we have cached, too. */ | |
500 | reinit_frame_cache (); | |
501 | } | |
502 | } | |
c2250ad1 | 503 | |
041274d8 PA |
504 | void |
505 | registers_changed (void) | |
506 | { | |
507 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 508 | |
32178cab MS |
509 | /* Force cleanup of any alloca areas if using C alloca instead of |
510 | a builtin alloca. This particular call is used to clean up | |
511 | areas allocated by low level target code which may build up | |
512 | during lengthy interactions between gdb and the target before | |
513 | gdb gives control to the user (ie watchpoints). */ | |
514 | alloca (0); | |
32178cab MS |
515 | } |
516 | ||
8e368124 AH |
517 | void |
518 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 519 | { |
8e368124 | 520 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
521 | |
522 | regcache->raw_update (regnum); | |
523 | } | |
524 | ||
525 | void | |
526 | regcache::raw_update (int regnum) | |
527 | { | |
4e888c28 | 528 | assert_regnum (regnum); |
8e368124 | 529 | |
3fadccb3 AC |
530 | /* Make certain that the register cache is up-to-date with respect |
531 | to the current thread. This switching shouldn't be necessary | |
532 | only there is still only one target side register cache. Sigh! | |
533 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 534 | |
ef79d9a3 | 535 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 536 | { |
ef79d9a3 | 537 | target_fetch_registers (this, regnum); |
788c8b10 PA |
538 | |
539 | /* A number of targets can't access the whole set of raw | |
540 | registers (because the debug API provides no means to get at | |
541 | them). */ | |
ef79d9a3 YQ |
542 | if (m_register_status[regnum] == REG_UNKNOWN) |
543 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 544 | } |
8e368124 AH |
545 | } |
546 | ||
547 | enum register_status | |
548 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
549 | { |
550 | return regcache->raw_read (regnum, buf); | |
551 | } | |
552 | ||
553 | enum register_status | |
849d0ba8 | 554 | readable_regcache::raw_read (int regnum, gdb_byte *buf) |
8e368124 AH |
555 | { |
556 | gdb_assert (buf != NULL); | |
ef79d9a3 | 557 | raw_update (regnum); |
05d1431c | 558 | |
ef79d9a3 YQ |
559 | if (m_register_status[regnum] != REG_VALID) |
560 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 561 | else |
ef79d9a3 YQ |
562 | memcpy (buf, register_buffer (regnum), |
563 | m_descr->sizeof_register[regnum]); | |
05d1431c | 564 | |
ef79d9a3 | 565 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
566 | } |
567 | ||
05d1431c | 568 | enum register_status |
28fc6740 | 569 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
570 | { |
571 | gdb_assert (regcache != NULL); | |
6f98355c | 572 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
573 | } |
574 | ||
6f98355c | 575 | template<typename T, typename> |
ef79d9a3 | 576 | enum register_status |
849d0ba8 | 577 | readable_regcache::raw_read (int regnum, T *val) |
28fc6740 | 578 | { |
2d522557 | 579 | gdb_byte *buf; |
05d1431c | 580 | enum register_status status; |
123f5f96 | 581 | |
4e888c28 | 582 | assert_regnum (regnum); |
ef79d9a3 YQ |
583 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
584 | status = raw_read (regnum, buf); | |
05d1431c | 585 | if (status == REG_VALID) |
6f98355c YQ |
586 | *val = extract_integer<T> (buf, |
587 | m_descr->sizeof_register[regnum], | |
588 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
589 | else |
590 | *val = 0; | |
591 | return status; | |
28fc6740 AC |
592 | } |
593 | ||
05d1431c | 594 | enum register_status |
28fc6740 AC |
595 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
596 | ULONGEST *val) | |
ef79d9a3 YQ |
597 | { |
598 | gdb_assert (regcache != NULL); | |
6f98355c | 599 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
600 | } |
601 | ||
c00dcbe9 MK |
602 | void |
603 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
604 | { |
605 | gdb_assert (regcache != NULL); | |
6f98355c | 606 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
607 | } |
608 | ||
6f98355c | 609 | template<typename T, typename> |
ef79d9a3 | 610 | void |
6f98355c | 611 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 612 | { |
7c543f7b | 613 | gdb_byte *buf; |
123f5f96 | 614 | |
4e888c28 | 615 | assert_regnum (regnum); |
ef79d9a3 | 616 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
6f98355c YQ |
617 | store_integer (buf, m_descr->sizeof_register[regnum], |
618 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 619 | raw_write (regnum, buf); |
c00dcbe9 MK |
620 | } |
621 | ||
622 | void | |
623 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
624 | ULONGEST val) | |
ef79d9a3 YQ |
625 | { |
626 | gdb_assert (regcache != NULL); | |
6f98355c | 627 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
628 | } |
629 | ||
9fd15b2e YQ |
630 | LONGEST |
631 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
632 | { | |
633 | LONGEST value; | |
634 | enum register_status status; | |
635 | ||
636 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
637 | if (status == REG_UNAVAILABLE) | |
638 | throw_error (NOT_AVAILABLE_ERROR, | |
639 | _("Register %d is not available"), regnum); | |
640 | return value; | |
641 | } | |
642 | ||
05d1431c | 643 | enum register_status |
2d522557 | 644 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
645 | { |
646 | return regcache->cooked_read (regnum, buf); | |
647 | } | |
648 | ||
649 | enum register_status | |
849d0ba8 | 650 | readable_regcache::cooked_read (int regnum, gdb_byte *buf) |
68365089 | 651 | { |
d138e37a | 652 | gdb_assert (regnum >= 0); |
ef79d9a3 | 653 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 654 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 655 | return raw_read (regnum, buf); |
849d0ba8 | 656 | else if (m_has_pseudo |
ef79d9a3 | 657 | && m_register_status[regnum] != REG_UNKNOWN) |
05d1431c | 658 | { |
ef79d9a3 YQ |
659 | if (m_register_status[regnum] == REG_VALID) |
660 | memcpy (buf, register_buffer (regnum), | |
661 | m_descr->sizeof_register[regnum]); | |
05d1431c | 662 | else |
ef79d9a3 | 663 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 664 | |
ef79d9a3 | 665 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 666 | } |
ef79d9a3 | 667 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
668 | { |
669 | struct value *mark, *computed; | |
670 | enum register_status result = REG_VALID; | |
671 | ||
672 | mark = value_mark (); | |
673 | ||
ef79d9a3 YQ |
674 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
675 | this, regnum); | |
3543a589 TT |
676 | if (value_entirely_available (computed)) |
677 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 678 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
679 | else |
680 | { | |
ef79d9a3 | 681 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
682 | result = REG_UNAVAILABLE; |
683 | } | |
684 | ||
685 | value_free_to_mark (mark); | |
686 | ||
687 | return result; | |
688 | } | |
d138e37a | 689 | else |
ef79d9a3 | 690 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 691 | regnum, buf); |
61a0eb5b AC |
692 | } |
693 | ||
3543a589 TT |
694 | struct value * |
695 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
696 | { |
697 | return regcache->cooked_read_value (regnum); | |
698 | } | |
699 | ||
700 | struct value * | |
849d0ba8 | 701 | readable_regcache::cooked_read_value (int regnum) |
3543a589 TT |
702 | { |
703 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 704 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 705 | |
d999647b | 706 | if (regnum < num_raw_registers () |
849d0ba8 | 707 | || (m_has_pseudo && m_register_status[regnum] != REG_UNKNOWN) |
ef79d9a3 | 708 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
709 | { |
710 | struct value *result; | |
711 | ||
ef79d9a3 | 712 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
713 | VALUE_LVAL (result) = lval_register; |
714 | VALUE_REGNUM (result) = regnum; | |
715 | ||
716 | /* It is more efficient in general to do this delegation in this | |
717 | direction than in the other one, even though the value-based | |
718 | API is preferred. */ | |
ef79d9a3 YQ |
719 | if (cooked_read (regnum, |
720 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
721 | mark_value_bytes_unavailable (result, 0, |
722 | TYPE_LENGTH (value_type (result))); | |
723 | ||
724 | return result; | |
725 | } | |
726 | else | |
ef79d9a3 YQ |
727 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
728 | this, regnum); | |
3543a589 TT |
729 | } |
730 | ||
05d1431c | 731 | enum register_status |
a378f419 AC |
732 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
733 | LONGEST *val) | |
ef79d9a3 YQ |
734 | { |
735 | gdb_assert (regcache != NULL); | |
6f98355c | 736 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
737 | } |
738 | ||
6f98355c | 739 | template<typename T, typename> |
ef79d9a3 | 740 | enum register_status |
849d0ba8 | 741 | readable_regcache::cooked_read (int regnum, T *val) |
a378f419 | 742 | { |
05d1431c | 743 | enum register_status status; |
2d522557 | 744 | gdb_byte *buf; |
123f5f96 | 745 | |
ef79d9a3 YQ |
746 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
747 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
748 | status = cooked_read (regnum, buf); | |
05d1431c | 749 | if (status == REG_VALID) |
6f98355c YQ |
750 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
751 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
752 | else |
753 | *val = 0; | |
754 | return status; | |
a378f419 AC |
755 | } |
756 | ||
05d1431c | 757 | enum register_status |
a378f419 AC |
758 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
759 | ULONGEST *val) | |
ef79d9a3 YQ |
760 | { |
761 | gdb_assert (regcache != NULL); | |
6f98355c | 762 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
763 | } |
764 | ||
a66a9c23 AC |
765 | void |
766 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
767 | LONGEST val) | |
ef79d9a3 YQ |
768 | { |
769 | gdb_assert (regcache != NULL); | |
6f98355c | 770 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
771 | } |
772 | ||
6f98355c | 773 | template<typename T, typename> |
ef79d9a3 | 774 | void |
6f98355c | 775 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 776 | { |
7c543f7b | 777 | gdb_byte *buf; |
123f5f96 | 778 | |
ef79d9a3 YQ |
779 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
780 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
781 | store_integer (buf, m_descr->sizeof_register[regnum], |
782 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 783 | cooked_write (regnum, buf); |
a66a9c23 AC |
784 | } |
785 | ||
786 | void | |
787 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
788 | ULONGEST val) | |
ef79d9a3 YQ |
789 | { |
790 | gdb_assert (regcache != NULL); | |
6f98355c | 791 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
792 | } |
793 | ||
61a0eb5b | 794 | void |
2d522557 AC |
795 | regcache_raw_write (struct regcache *regcache, int regnum, |
796 | const gdb_byte *buf) | |
ef79d9a3 YQ |
797 | { |
798 | gdb_assert (regcache != NULL && buf != NULL); | |
799 | regcache->raw_write (regnum, buf); | |
800 | } | |
801 | ||
802 | void | |
803 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 804 | { |
594f7785 | 805 | |
ef79d9a3 | 806 | gdb_assert (buf != NULL); |
4e888c28 | 807 | assert_regnum (regnum); |
ef79d9a3 | 808 | gdb_assert (!m_readonly_p); |
3fadccb3 | 809 | |
3fadccb3 AC |
810 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
811 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 812 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
813 | return; |
814 | ||
3fadccb3 | 815 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 816 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
817 | if (get_register_status (regnum) == REG_VALID |
818 | && (memcmp (register_buffer (regnum), buf, | |
819 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
820 | return; |
821 | ||
ef79d9a3 | 822 | target_prepare_to_store (this); |
c8ec2f33 | 823 | raw_supply (regnum, buf); |
b94ade42 | 824 | |
b292235f TT |
825 | /* Invalidate the register after it is written, in case of a |
826 | failure. */ | |
827 | regcache_invalidator invalidator (this, regnum); | |
b94ade42 | 828 | |
ef79d9a3 | 829 | target_store_registers (this, regnum); |
594f7785 | 830 | |
b292235f TT |
831 | /* The target did not throw an error so we can discard invalidating |
832 | the register. */ | |
833 | invalidator.release (); | |
61a0eb5b AC |
834 | } |
835 | ||
68365089 | 836 | void |
2d522557 AC |
837 | regcache_cooked_write (struct regcache *regcache, int regnum, |
838 | const gdb_byte *buf) | |
ef79d9a3 YQ |
839 | { |
840 | regcache->cooked_write (regnum, buf); | |
841 | } | |
842 | ||
843 | void | |
844 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 845 | { |
d138e37a | 846 | gdb_assert (regnum >= 0); |
ef79d9a3 | 847 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 848 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 849 | raw_write (regnum, buf); |
d138e37a | 850 | else |
ef79d9a3 | 851 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 852 | regnum, buf); |
61a0eb5b AC |
853 | } |
854 | ||
06c0b04e AC |
855 | /* Perform a partial register transfer using a read, modify, write |
856 | operation. */ | |
857 | ||
858 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
859 | void *buf); | |
860 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
861 | const void *buf); | |
862 | ||
ef79d9a3 | 863 | enum register_status |
849d0ba8 YQ |
864 | readable_regcache::read_part (int regnum, int offset, int len, void *in, |
865 | bool is_raw) | |
866 | { | |
867 | struct gdbarch *gdbarch = arch (); | |
868 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); | |
869 | ||
870 | gdb_assert (in != NULL); | |
871 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); | |
872 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
873 | /* Something to do? */ | |
874 | if (offset + len == 0) | |
875 | return REG_VALID; | |
876 | /* Read (when needed) ... */ | |
877 | enum register_status status; | |
878 | ||
879 | if (is_raw) | |
880 | status = raw_read (regnum, reg); | |
881 | else | |
882 | status = cooked_read (regnum, reg); | |
883 | if (status != REG_VALID) | |
884 | return status; | |
885 | ||
886 | /* ... modify ... */ | |
887 | memcpy (in, reg + offset, len); | |
888 | ||
889 | return REG_VALID; | |
890 | } | |
891 | ||
892 | enum register_status | |
893 | regcache::write_part (int regnum, int offset, int len, | |
d3037ba6 | 894 | const void *out, bool is_raw) |
ef79d9a3 YQ |
895 | { |
896 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 897 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 898 | |
849d0ba8 | 899 | gdb_assert (out != NULL); |
ef79d9a3 YQ |
900 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
901 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
902 | /* Something to do? */ |
903 | if (offset + len == 0) | |
05d1431c | 904 | return REG_VALID; |
0df8b418 | 905 | /* Read (when needed) ... */ |
849d0ba8 | 906 | if (offset > 0 |
ef79d9a3 | 907 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 908 | { |
05d1431c PA |
909 | enum register_status status; |
910 | ||
d3037ba6 YQ |
911 | if (is_raw) |
912 | status = raw_read (regnum, reg); | |
913 | else | |
914 | status = cooked_read (regnum, reg); | |
05d1431c PA |
915 | if (status != REG_VALID) |
916 | return status; | |
06c0b04e | 917 | } |
849d0ba8 YQ |
918 | |
919 | memcpy (reg + offset, out, len); | |
06c0b04e | 920 | /* ... write (when needed). */ |
849d0ba8 YQ |
921 | if (is_raw) |
922 | raw_write (regnum, reg); | |
923 | else | |
924 | cooked_write (regnum, reg); | |
05d1431c PA |
925 | |
926 | return REG_VALID; | |
06c0b04e AC |
927 | } |
928 | ||
05d1431c | 929 | enum register_status |
06c0b04e | 930 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 931 | int offset, int len, gdb_byte *buf) |
06c0b04e | 932 | { |
ef79d9a3 YQ |
933 | return regcache->raw_read_part (regnum, offset, len, buf); |
934 | } | |
123f5f96 | 935 | |
ef79d9a3 | 936 | enum register_status |
849d0ba8 | 937 | readable_regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) |
ef79d9a3 | 938 | { |
4e888c28 | 939 | assert_regnum (regnum); |
849d0ba8 | 940 | return read_part (regnum, offset, len, buf, true); |
06c0b04e AC |
941 | } |
942 | ||
943 | void | |
944 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 945 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 946 | { |
ef79d9a3 YQ |
947 | regcache->raw_write_part (regnum, offset, len, buf); |
948 | } | |
123f5f96 | 949 | |
ef79d9a3 YQ |
950 | void |
951 | regcache::raw_write_part (int regnum, int offset, int len, | |
952 | const gdb_byte *buf) | |
953 | { | |
4e888c28 | 954 | assert_regnum (regnum); |
849d0ba8 | 955 | write_part (regnum, offset, len, buf, true); |
06c0b04e AC |
956 | } |
957 | ||
05d1431c | 958 | enum register_status |
06c0b04e | 959 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 960 | int offset, int len, gdb_byte *buf) |
06c0b04e | 961 | { |
ef79d9a3 YQ |
962 | return regcache->cooked_read_part (regnum, offset, len, buf); |
963 | } | |
123f5f96 | 964 | |
ef79d9a3 YQ |
965 | |
966 | enum register_status | |
849d0ba8 YQ |
967 | readable_regcache::cooked_read_part (int regnum, int offset, int len, |
968 | gdb_byte *buf) | |
ef79d9a3 YQ |
969 | { |
970 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 971 | return read_part (regnum, offset, len, buf, false); |
06c0b04e AC |
972 | } |
973 | ||
974 | void | |
975 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 976 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 977 | { |
ef79d9a3 YQ |
978 | regcache->cooked_write_part (regnum, offset, len, buf); |
979 | } | |
123f5f96 | 980 | |
ef79d9a3 YQ |
981 | void |
982 | regcache::cooked_write_part (int regnum, int offset, int len, | |
983 | const gdb_byte *buf) | |
984 | { | |
985 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
849d0ba8 | 986 | write_part (regnum, offset, len, buf, false); |
06c0b04e | 987 | } |
32178cab | 988 | |
a16d75cc | 989 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
990 | |
991 | void | |
6618125d | 992 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
993 | { |
994 | gdb_assert (regcache != NULL); | |
995 | regcache->raw_supply (regnum, buf); | |
996 | } | |
997 | ||
998 | void | |
c8ec2f33 | 999 | detached_regcache::raw_supply (int regnum, const void *buf) |
9a661b68 MK |
1000 | { |
1001 | void *regbuf; | |
1002 | size_t size; | |
1003 | ||
4e888c28 | 1004 | assert_regnum (regnum); |
9a661b68 | 1005 | |
ef79d9a3 YQ |
1006 | regbuf = register_buffer (regnum); |
1007 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1008 | |
1009 | if (buf) | |
ee99023e PA |
1010 | { |
1011 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1012 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1013 | } |
9a661b68 | 1014 | else |
ee99023e PA |
1015 | { |
1016 | /* This memset not strictly necessary, but better than garbage | |
1017 | in case the register value manages to escape somewhere (due | |
1018 | to a bug, no less). */ | |
1019 | memset (regbuf, 0, size); | |
ef79d9a3 | 1020 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1021 | } |
9a661b68 MK |
1022 | } |
1023 | ||
b057297a AH |
1024 | /* Supply register REGNUM to REGCACHE. Value to supply is an integer stored at |
1025 | address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. If | |
1026 | the register size is greater than ADDR_LEN, then the integer will be sign or | |
1027 | zero extended. If the register size is smaller than the integer, then the | |
1028 | most significant bytes of the integer will be truncated. */ | |
1029 | ||
1030 | void | |
1031 | regcache::raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len, | |
1032 | bool is_signed) | |
1033 | { | |
1034 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1035 | gdb_byte *regbuf; | |
1036 | size_t regsize; | |
1037 | ||
4e888c28 | 1038 | assert_regnum (regnum); |
b057297a AH |
1039 | gdb_assert (!m_readonly_p); |
1040 | ||
1041 | regbuf = register_buffer (regnum); | |
1042 | regsize = m_descr->sizeof_register[regnum]; | |
1043 | ||
1044 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1045 | byte_order); | |
1046 | m_register_status[regnum] = REG_VALID; | |
1047 | } | |
1048 | ||
f81fdd35 AH |
1049 | /* Supply register REGNUM with zeroed value to REGCACHE. This is not the same |
1050 | as calling raw_supply with NULL (which will set the state to | |
1051 | unavailable). */ | |
1052 | ||
1053 | void | |
1054 | regcache::raw_supply_zeroed (int regnum) | |
1055 | { | |
1056 | void *regbuf; | |
1057 | size_t size; | |
1058 | ||
4e888c28 | 1059 | assert_regnum (regnum); |
f81fdd35 AH |
1060 | gdb_assert (!m_readonly_p); |
1061 | ||
1062 | regbuf = register_buffer (regnum); | |
1063 | size = m_descr->sizeof_register[regnum]; | |
1064 | ||
1065 | memset (regbuf, 0, size); | |
1066 | m_register_status[regnum] = REG_VALID; | |
1067 | } | |
1068 | ||
9a661b68 MK |
1069 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ |
1070 | ||
1071 | void | |
6618125d | 1072 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1073 | { |
1074 | gdb_assert (regcache != NULL && buf != NULL); | |
1075 | regcache->raw_collect (regnum, buf); | |
1076 | } | |
1077 | ||
1078 | void | |
1079 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1080 | { |
1081 | const void *regbuf; | |
1082 | size_t size; | |
1083 | ||
ef79d9a3 | 1084 | gdb_assert (buf != NULL); |
4e888c28 | 1085 | assert_regnum (regnum); |
9a661b68 | 1086 | |
ef79d9a3 YQ |
1087 | regbuf = register_buffer (regnum); |
1088 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1089 | memcpy (buf, regbuf, size); |
1090 | } | |
1091 | ||
0b309272 AA |
1092 | /* Transfer a single or all registers belonging to a certain register |
1093 | set to or from a buffer. This is the main worker function for | |
1094 | regcache_supply_regset and regcache_collect_regset. */ | |
1095 | ||
b057297a AH |
1096 | /* Collect register REGNUM from REGCACHE. Store collected value as an integer |
1097 | at address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. | |
1098 | If ADDR_LEN is greater than the register size, then the integer will be sign | |
1099 | or zero extended. If ADDR_LEN is smaller than the register size, then the | |
1100 | most significant bytes of the integer will be truncated. */ | |
1101 | ||
1102 | void | |
1103 | regcache::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, | |
1104 | bool is_signed) const | |
1105 | { | |
1106 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1107 | const gdb_byte *regbuf; | |
1108 | size_t regsize; | |
1109 | ||
4e888c28 | 1110 | assert_regnum (regnum); |
b057297a AH |
1111 | |
1112 | regbuf = register_buffer (regnum); | |
1113 | regsize = m_descr->sizeof_register[regnum]; | |
1114 | ||
1115 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1116 | byte_order); | |
1117 | } | |
1118 | ||
ef79d9a3 YQ |
1119 | void |
1120 | regcache::transfer_regset (const struct regset *regset, | |
1121 | struct regcache *out_regcache, | |
1122 | int regnum, const void *in_buf, | |
1123 | void *out_buf, size_t size) const | |
0b309272 AA |
1124 | { |
1125 | const struct regcache_map_entry *map; | |
1126 | int offs = 0, count; | |
1127 | ||
19ba03f4 SM |
1128 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1129 | (count = map->count) != 0; | |
1130 | map++) | |
0b309272 AA |
1131 | { |
1132 | int regno = map->regno; | |
1133 | int slot_size = map->size; | |
1134 | ||
1135 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1136 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1137 | |
1138 | if (regno == REGCACHE_MAP_SKIP | |
1139 | || (regnum != -1 | |
1140 | && (regnum < regno || regnum >= regno + count))) | |
1141 | offs += count * slot_size; | |
1142 | ||
1143 | else if (regnum == -1) | |
1144 | for (; count--; regno++, offs += slot_size) | |
1145 | { | |
1146 | if (offs + slot_size > size) | |
1147 | break; | |
1148 | ||
1149 | if (out_buf) | |
ef79d9a3 | 1150 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1151 | else |
ef79d9a3 YQ |
1152 | out_regcache->raw_supply (regno, in_buf |
1153 | ? (const gdb_byte *) in_buf + offs | |
1154 | : NULL); | |
0b309272 AA |
1155 | } |
1156 | else | |
1157 | { | |
1158 | /* Transfer a single register and return. */ | |
1159 | offs += (regnum - regno) * slot_size; | |
1160 | if (offs + slot_size > size) | |
1161 | return; | |
1162 | ||
1163 | if (out_buf) | |
ef79d9a3 | 1164 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1165 | else |
ef79d9a3 YQ |
1166 | out_regcache->raw_supply (regnum, in_buf |
1167 | ? (const gdb_byte *) in_buf + offs | |
1168 | : NULL); | |
0b309272 AA |
1169 | return; |
1170 | } | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1175 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1176 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1177 | ||
1178 | void | |
1179 | regcache_supply_regset (const struct regset *regset, | |
1180 | struct regcache *regcache, | |
1181 | int regnum, const void *buf, size_t size) | |
1182 | { | |
ef79d9a3 YQ |
1183 | regcache->supply_regset (regset, regnum, buf, size); |
1184 | } | |
1185 | ||
1186 | void | |
1187 | regcache::supply_regset (const struct regset *regset, | |
1188 | int regnum, const void *buf, size_t size) | |
1189 | { | |
1190 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1191 | } |
1192 | ||
1193 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1194 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1195 | REGSET. */ | |
1196 | ||
1197 | void | |
1198 | regcache_collect_regset (const struct regset *regset, | |
1199 | const struct regcache *regcache, | |
1200 | int regnum, void *buf, size_t size) | |
1201 | { | |
ef79d9a3 YQ |
1202 | regcache->collect_regset (regset, regnum, buf, size); |
1203 | } | |
1204 | ||
1205 | void | |
1206 | regcache::collect_regset (const struct regset *regset, | |
1207 | int regnum, void *buf, size_t size) const | |
1208 | { | |
1209 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1210 | } |
1211 | ||
193cb69f | 1212 | |
515630c5 | 1213 | /* Special handling for register PC. */ |
32178cab MS |
1214 | |
1215 | CORE_ADDR | |
515630c5 | 1216 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1217 | { |
ac7936df | 1218 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1219 | |
32178cab MS |
1220 | CORE_ADDR pc_val; |
1221 | ||
61a1198a UW |
1222 | if (gdbarch_read_pc_p (gdbarch)) |
1223 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1224 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1225 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1226 | { |
61a1198a | 1227 | ULONGEST raw_val; |
123f5f96 | 1228 | |
05d1431c PA |
1229 | if (regcache_cooked_read_unsigned (regcache, |
1230 | gdbarch_pc_regnum (gdbarch), | |
1231 | &raw_val) == REG_UNAVAILABLE) | |
1232 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1233 | ||
214e098a | 1234 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1235 | } |
1236 | else | |
515630c5 UW |
1237 | internal_error (__FILE__, __LINE__, |
1238 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1239 | return pc_val; |
1240 | } | |
1241 | ||
32178cab | 1242 | void |
515630c5 | 1243 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1244 | { |
ac7936df | 1245 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1246 | |
61a1198a UW |
1247 | if (gdbarch_write_pc_p (gdbarch)) |
1248 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1249 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1250 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1251 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1252 | else |
1253 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1254 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1255 | |
1256 | /* Writing the PC (for instance, from "load") invalidates the | |
1257 | current frame. */ | |
1258 | reinit_frame_cache (); | |
32178cab MS |
1259 | } |
1260 | ||
d999647b | 1261 | int |
31716595 | 1262 | reg_buffer::num_raw_registers () const |
d999647b YQ |
1263 | { |
1264 | return gdbarch_num_regs (arch ()); | |
1265 | } | |
1266 | ||
ed771251 | 1267 | void |
ef79d9a3 | 1268 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1269 | { |
ef79d9a3 | 1270 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1271 | |
1272 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1273 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1274 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1275 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1276 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1277 | gdbarch_register_name (gdbarch, regno)); | |
1278 | else | |
1279 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1280 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1281 | { | |
1282 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1283 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1284 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1285 | |
1286 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1287 | for (int i = 0; i < size; i++) | |
1288 | { | |
1289 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1290 | } | |
1291 | if (size <= sizeof (LONGEST)) | |
1292 | { | |
1293 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1294 | ||
1295 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1296 | core_addr_to_string_nz (val), plongest (val)); | |
1297 | } | |
1298 | } | |
1299 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1300 | } | |
32178cab | 1301 | |
705152c5 | 1302 | static void |
0b39b52e | 1303 | reg_flush_command (const char *command, int from_tty) |
705152c5 MS |
1304 | { |
1305 | /* Force-flush the register cache. */ | |
1306 | registers_changed (); | |
1307 | if (from_tty) | |
a3f17187 | 1308 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1309 | } |
1310 | ||
f3384e66 YQ |
1311 | /* An abstract base class for register dump. */ |
1312 | ||
1313 | class register_dump | |
af030b9a | 1314 | { |
f3384e66 YQ |
1315 | public: |
1316 | void dump (ui_file *file) | |
1317 | { | |
1318 | auto descr = regcache_descr (m_gdbarch); | |
1319 | int regnum; | |
1320 | int footnote_nr = 0; | |
1321 | int footnote_register_offset = 0; | |
1322 | int footnote_register_type_name_null = 0; | |
1323 | long register_offset = 0; | |
1324 | ||
1325 | gdb_assert (descr->nr_cooked_registers | |
1326 | == (gdbarch_num_regs (m_gdbarch) | |
1327 | + gdbarch_num_pseudo_regs (m_gdbarch))); | |
1328 | ||
1329 | for (regnum = -1; regnum < descr->nr_cooked_registers; regnum++) | |
1330 | { | |
1331 | /* Name. */ | |
1332 | if (regnum < 0) | |
1333 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1334 | else | |
1335 | { | |
1336 | const char *p = gdbarch_register_name (m_gdbarch, regnum); | |
af030b9a | 1337 | |
f3384e66 YQ |
1338 | if (p == NULL) |
1339 | p = ""; | |
1340 | else if (p[0] == '\0') | |
1341 | p = "''"; | |
1342 | fprintf_unfiltered (file, " %-10s", p); | |
1343 | } | |
af030b9a | 1344 | |
f3384e66 YQ |
1345 | /* Number. */ |
1346 | if (regnum < 0) | |
1347 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1348 | else | |
1349 | fprintf_unfiltered (file, " %4d", regnum); | |
123f5f96 | 1350 | |
f3384e66 YQ |
1351 | /* Relative number. */ |
1352 | if (regnum < 0) | |
1353 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1354 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
1355 | fprintf_unfiltered (file, " %4d", regnum); | |
1356 | else | |
1357 | fprintf_unfiltered (file, " %4d", | |
1358 | (regnum - gdbarch_num_regs (m_gdbarch))); | |
af030b9a | 1359 | |
f3384e66 YQ |
1360 | /* Offset. */ |
1361 | if (regnum < 0) | |
1362 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1363 | else | |
1364 | { | |
1365 | fprintf_unfiltered (file, " %6ld", | |
1366 | descr->register_offset[regnum]); | |
1367 | if (register_offset != descr->register_offset[regnum] | |
1368 | || (regnum > 0 | |
1369 | && (descr->register_offset[regnum] | |
1370 | != (descr->register_offset[regnum - 1] | |
1371 | + descr->sizeof_register[regnum - 1]))) | |
1372 | ) | |
1373 | { | |
1374 | if (!footnote_register_offset) | |
1375 | footnote_register_offset = ++footnote_nr; | |
1376 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1377 | } | |
1378 | else | |
1379 | fprintf_unfiltered (file, " "); | |
1380 | register_offset = (descr->register_offset[regnum] | |
1381 | + descr->sizeof_register[regnum]); | |
1382 | } | |
af030b9a | 1383 | |
f3384e66 YQ |
1384 | /* Size. */ |
1385 | if (regnum < 0) | |
1386 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1387 | else | |
1388 | fprintf_unfiltered (file, " %5ld", descr->sizeof_register[regnum]); | |
af030b9a | 1389 | |
f3384e66 | 1390 | /* Type. */ |
af030b9a | 1391 | { |
f3384e66 YQ |
1392 | const char *t; |
1393 | std::string name_holder; | |
1394 | ||
1395 | if (regnum < 0) | |
1396 | t = "Type"; | |
1397 | else | |
af030b9a | 1398 | { |
f3384e66 YQ |
1399 | static const char blt[] = "builtin_type"; |
1400 | ||
1401 | t = TYPE_NAME (register_type (m_gdbarch, regnum)); | |
1402 | if (t == NULL) | |
1403 | { | |
1404 | if (!footnote_register_type_name_null) | |
1405 | footnote_register_type_name_null = ++footnote_nr; | |
1406 | name_holder = string_printf ("*%d", | |
1407 | footnote_register_type_name_null); | |
1408 | t = name_holder.c_str (); | |
1409 | } | |
1410 | /* Chop a leading builtin_type. */ | |
1411 | if (startswith (t, blt)) | |
1412 | t += strlen (blt); | |
af030b9a | 1413 | } |
f3384e66 | 1414 | fprintf_unfiltered (file, " %-15s", t); |
af030b9a AC |
1415 | } |
1416 | ||
f3384e66 YQ |
1417 | /* Leading space always present. */ |
1418 | fprintf_unfiltered (file, " "); | |
af030b9a | 1419 | |
f3384e66 | 1420 | dump_reg (file, regnum); |
123f5f96 | 1421 | |
f3384e66 YQ |
1422 | fprintf_unfiltered (file, "\n"); |
1423 | } | |
1424 | ||
1425 | if (footnote_register_offset) | |
1426 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1427 | footnote_register_offset); | |
1428 | if (footnote_register_type_name_null) | |
1429 | fprintf_unfiltered (file, | |
1430 | "*%d: Register type's name NULL.\n", | |
1431 | footnote_register_type_name_null); | |
1432 | } | |
1433 | ||
1434 | virtual ~register_dump () {}; | |
1435 | ||
1436 | protected: | |
1437 | register_dump (gdbarch *arch) | |
1438 | : m_gdbarch (arch) | |
1439 | {} | |
1440 | ||
1441 | /* Dump the register REGNUM contents. If REGNUM is -1, print the | |
1442 | header. */ | |
1443 | virtual void dump_reg (ui_file *file, int regnum) = 0; | |
1444 | ||
1445 | gdbarch *m_gdbarch; | |
1446 | }; | |
1447 | ||
1448 | /* Dump registers from regcache, used for dump raw registers and | |
1449 | cooked registers. */ | |
1450 | ||
1451 | class register_dump_regcache : public register_dump | |
1452 | { | |
1453 | public: | |
1454 | register_dump_regcache (regcache *regcache, bool dump_pseudo) | |
1455 | : register_dump (regcache->arch ()), m_regcache (regcache), | |
1456 | m_dump_pseudo (dump_pseudo) | |
1457 | { | |
1458 | } | |
1459 | ||
1460 | protected: | |
1461 | void dump_reg (ui_file *file, int regnum) override | |
1462 | { | |
1463 | if (regnum < 0) | |
1464 | { | |
1465 | if (m_dump_pseudo) | |
1466 | fprintf_unfiltered (file, "Cooked value"); | |
b59ff9d5 | 1467 | else |
f3384e66 YQ |
1468 | fprintf_unfiltered (file, "Raw value"); |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | if (regnum < gdbarch_num_regs (m_gdbarch) || m_dump_pseudo) | |
b59ff9d5 | 1473 | { |
f3384e66 | 1474 | auto size = register_size (m_gdbarch, regnum); |
123f5f96 | 1475 | |
f3384e66 YQ |
1476 | if (size == 0) |
1477 | return; | |
1478 | ||
1479 | gdb::def_vector<gdb_byte> buf (size); | |
1480 | auto status = m_regcache->cooked_read (regnum, buf.data ()); | |
1481 | ||
1482 | if (status == REG_UNKNOWN) | |
1483 | fprintf_unfiltered (file, "<invalid>"); | |
1484 | else if (status == REG_UNAVAILABLE) | |
1485 | fprintf_unfiltered (file, "<unavailable>"); | |
1486 | else | |
b59ff9d5 | 1487 | { |
f3384e66 YQ |
1488 | print_hex_chars (file, buf.data (), size, |
1489 | gdbarch_byte_order (m_gdbarch), true); | |
b59ff9d5 | 1490 | } |
b59ff9d5 | 1491 | } |
f3384e66 YQ |
1492 | else |
1493 | { | |
1494 | /* Just print "<cooked>" for pseudo register when | |
1495 | regcache_dump_raw. */ | |
1496 | fprintf_unfiltered (file, "<cooked>"); | |
1497 | } | |
b59ff9d5 | 1498 | } |
f3384e66 | 1499 | } |
b59ff9d5 | 1500 | |
f3384e66 YQ |
1501 | private: |
1502 | regcache *m_regcache; | |
af030b9a | 1503 | |
f3384e66 YQ |
1504 | /* Dump pseudo registers or not. */ |
1505 | const bool m_dump_pseudo; | |
1506 | }; | |
af030b9a | 1507 | |
215c69dc YQ |
1508 | /* Dump from reg_buffer, used when there is no thread or |
1509 | registers. */ | |
1510 | ||
1511 | class register_dump_reg_buffer : public register_dump, reg_buffer | |
1512 | { | |
1513 | public: | |
1514 | register_dump_reg_buffer (gdbarch *gdbarch, bool dump_pseudo) | |
1515 | : register_dump (gdbarch), reg_buffer (gdbarch, dump_pseudo) | |
1516 | { | |
1517 | } | |
1518 | ||
1519 | protected: | |
1520 | void dump_reg (ui_file *file, int regnum) override | |
1521 | { | |
1522 | if (regnum < 0) | |
1523 | { | |
1524 | if (m_has_pseudo) | |
1525 | fprintf_unfiltered (file, "Cooked value"); | |
1526 | else | |
1527 | fprintf_unfiltered (file, "Raw value"); | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | if (regnum < gdbarch_num_regs (m_gdbarch) || m_has_pseudo) | |
1532 | { | |
1533 | auto size = register_size (m_gdbarch, regnum); | |
1534 | ||
1535 | if (size == 0) | |
1536 | return; | |
1537 | ||
1538 | auto status = get_register_status (regnum); | |
1539 | ||
1540 | gdb_assert (status != REG_VALID); | |
1541 | ||
1542 | if (status == REG_UNKNOWN) | |
1543 | fprintf_unfiltered (file, "<invalid>"); | |
1544 | else | |
1545 | fprintf_unfiltered (file, "<unavailable>"); | |
1546 | } | |
1547 | else | |
1548 | { | |
1549 | /* Just print "<cooked>" for pseudo register when | |
1550 | regcache_dump_raw. */ | |
1551 | fprintf_unfiltered (file, "<cooked>"); | |
1552 | } | |
1553 | } | |
1554 | } | |
1555 | }; | |
1556 | ||
f3384e66 | 1557 | /* For "maint print registers". */ |
50d6adef | 1558 | |
f3384e66 YQ |
1559 | class register_dump_none : public register_dump |
1560 | { | |
1561 | public: | |
1562 | register_dump_none (gdbarch *arch) | |
1563 | : register_dump (arch) | |
1564 | {} | |
05d1431c | 1565 | |
f3384e66 YQ |
1566 | protected: |
1567 | void dump_reg (ui_file *file, int regnum) override | |
1568 | {} | |
1569 | }; | |
50d6adef | 1570 | |
f3384e66 | 1571 | /* For "maint print remote-registers". */ |
af030b9a | 1572 | |
f3384e66 YQ |
1573 | class register_dump_remote : public register_dump |
1574 | { | |
1575 | public: | |
1576 | register_dump_remote (gdbarch *arch) | |
1577 | : register_dump (arch) | |
1578 | {} | |
123f5f96 | 1579 | |
f3384e66 YQ |
1580 | protected: |
1581 | void dump_reg (ui_file *file, int regnum) override | |
1582 | { | |
1583 | if (regnum < 0) | |
1584 | { | |
1585 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1586 | } | |
1587 | else if (regnum < gdbarch_num_regs (m_gdbarch)) | |
1588 | { | |
1589 | int pnum, poffset; | |
b59ff9d5 | 1590 | |
f3384e66 YQ |
1591 | if (remote_register_number_and_offset (m_gdbarch, regnum, |
1592 | &pnum, &poffset)) | |
1593 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1594 | } | |
1595 | } | |
1596 | }; | |
c21236dc | 1597 | |
f3384e66 | 1598 | /* For "maint print register-groups". */ |
c21236dc | 1599 | |
f3384e66 YQ |
1600 | class register_dump_groups : public register_dump |
1601 | { | |
1602 | public: | |
1603 | register_dump_groups (gdbarch *arch) | |
1604 | : register_dump (arch) | |
1605 | {} | |
af030b9a | 1606 | |
f3384e66 YQ |
1607 | protected: |
1608 | void dump_reg (ui_file *file, int regnum) override | |
1609 | { | |
1610 | if (regnum < 0) | |
1611 | fprintf_unfiltered (file, "Groups"); | |
1612 | else | |
1613 | { | |
1614 | const char *sep = ""; | |
1615 | struct reggroup *group; | |
1616 | ||
1617 | for (group = reggroup_next (m_gdbarch, NULL); | |
1618 | group != NULL; | |
1619 | group = reggroup_next (m_gdbarch, group)) | |
1620 | { | |
1621 | if (gdbarch_register_reggroup_p (m_gdbarch, regnum, group)) | |
1622 | { | |
1623 | fprintf_unfiltered (file, | |
1624 | "%s%s", sep, reggroup_name (group)); | |
1625 | sep = ","; | |
1626 | } | |
1627 | } | |
1628 | } | |
1629 | } | |
1630 | }; | |
1631 | ||
1632 | enum regcache_dump_what | |
1633 | { | |
1634 | regcache_dump_none, regcache_dump_raw, | |
1635 | regcache_dump_cooked, regcache_dump_groups, | |
1636 | regcache_dump_remote | |
1637 | }; | |
af030b9a AC |
1638 | |
1639 | static void | |
4e001312 | 1640 | regcache_print (const char *args, enum regcache_dump_what what_to_dump) |
af030b9a | 1641 | { |
ed4227b7 PA |
1642 | /* Where to send output. */ |
1643 | stdio_file file; | |
1644 | ui_file *out; | |
1645 | ||
af030b9a | 1646 | if (args == NULL) |
ed4227b7 | 1647 | out = gdb_stdout; |
af030b9a AC |
1648 | else |
1649 | { | |
d7e74731 | 1650 | if (!file.open (args, "w")) |
e2e0b3e5 | 1651 | perror_with_name (_("maintenance print architecture")); |
ed4227b7 PA |
1652 | out = &file; |
1653 | } | |
1654 | ||
f3384e66 YQ |
1655 | std::unique_ptr<register_dump> dump; |
1656 | std::unique_ptr<regcache> regs; | |
1657 | gdbarch *gdbarch; | |
1658 | ||
ed4227b7 | 1659 | if (target_has_registers) |
f3384e66 | 1660 | gdbarch = get_current_regcache ()->arch (); |
ed4227b7 | 1661 | else |
f3384e66 YQ |
1662 | gdbarch = target_gdbarch (); |
1663 | ||
1664 | switch (what_to_dump) | |
ed4227b7 | 1665 | { |
f3384e66 YQ |
1666 | case regcache_dump_none: |
1667 | dump.reset (new register_dump_none (gdbarch)); | |
1668 | break; | |
1669 | case regcache_dump_remote: | |
1670 | dump.reset (new register_dump_remote (gdbarch)); | |
1671 | break; | |
1672 | case regcache_dump_groups: | |
1673 | dump.reset (new register_dump_groups (gdbarch)); | |
1674 | break; | |
1675 | case regcache_dump_raw: | |
1676 | case regcache_dump_cooked: | |
1677 | { | |
215c69dc | 1678 | auto dump_pseudo = (what_to_dump == regcache_dump_cooked); |
f3384e66 YQ |
1679 | |
1680 | if (target_has_registers) | |
215c69dc YQ |
1681 | dump.reset (new register_dump_regcache (get_current_regcache (), |
1682 | dump_pseudo)); | |
f3384e66 YQ |
1683 | else |
1684 | { | |
1685 | /* For the benefit of "maint print registers" & co when | |
1686 | debugging an executable, allow dumping a regcache even when | |
1687 | there is no thread selected / no registers. */ | |
215c69dc YQ |
1688 | dump.reset (new register_dump_reg_buffer (target_gdbarch (), |
1689 | dump_pseudo)); | |
f3384e66 | 1690 | } |
f3384e66 YQ |
1691 | } |
1692 | break; | |
af030b9a | 1693 | } |
f3384e66 YQ |
1694 | |
1695 | dump->dump (out); | |
af030b9a AC |
1696 | } |
1697 | ||
1698 | static void | |
4e001312 | 1699 | maintenance_print_registers (const char *args, int from_tty) |
af030b9a AC |
1700 | { |
1701 | regcache_print (args, regcache_dump_none); | |
1702 | } | |
1703 | ||
1704 | static void | |
4e001312 | 1705 | maintenance_print_raw_registers (const char *args, int from_tty) |
af030b9a AC |
1706 | { |
1707 | regcache_print (args, regcache_dump_raw); | |
1708 | } | |
1709 | ||
1710 | static void | |
4e001312 | 1711 | maintenance_print_cooked_registers (const char *args, int from_tty) |
af030b9a AC |
1712 | { |
1713 | regcache_print (args, regcache_dump_cooked); | |
1714 | } | |
1715 | ||
b59ff9d5 | 1716 | static void |
4e001312 | 1717 | maintenance_print_register_groups (const char *args, int from_tty) |
b59ff9d5 AC |
1718 | { |
1719 | regcache_print (args, regcache_dump_groups); | |
1720 | } | |
1721 | ||
c21236dc | 1722 | static void |
4e001312 | 1723 | maintenance_print_remote_registers (const char *args, int from_tty) |
c21236dc PA |
1724 | { |
1725 | regcache_print (args, regcache_dump_remote); | |
1726 | } | |
1727 | ||
8248946c YQ |
1728 | #if GDB_SELF_TEST |
1729 | #include "selftest.h" | |
1b30aaa5 YQ |
1730 | #include "selftest-arch.h" |
1731 | #include "gdbthread.h" | |
ec7a5fcb | 1732 | #include "target-float.h" |
8248946c YQ |
1733 | |
1734 | namespace selftests { | |
1735 | ||
e521e87e | 1736 | class regcache_access : public regcache |
8248946c | 1737 | { |
e521e87e YQ |
1738 | public: |
1739 | ||
1740 | /* Return the number of elements in current_regcache. */ | |
1741 | ||
1742 | static size_t | |
1743 | current_regcache_size () | |
1744 | { | |
1745 | return std::distance (regcache::current_regcache.begin (), | |
1746 | regcache::current_regcache.end ()); | |
1747 | } | |
1748 | }; | |
8248946c YQ |
1749 | |
1750 | static void | |
1751 | current_regcache_test (void) | |
1752 | { | |
1753 | /* It is empty at the start. */ | |
e521e87e | 1754 | SELF_CHECK (regcache_access::current_regcache_size () == 0); |
8248946c YQ |
1755 | |
1756 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1757 | ||
1758 | /* Get regcache from ptid1, a new regcache is added to | |
1759 | current_regcache. */ | |
1760 | regcache *regcache = get_thread_arch_aspace_regcache (ptid1, | |
1761 | target_gdbarch (), | |
1762 | NULL); | |
1763 | ||
1764 | SELF_CHECK (regcache != NULL); | |
1765 | SELF_CHECK (regcache->ptid () == ptid1); | |
e521e87e | 1766 | SELF_CHECK (regcache_access::current_regcache_size () == 1); |
8248946c YQ |
1767 | |
1768 | /* Get regcache from ptid2, a new regcache is added to | |
1769 | current_regcache. */ | |
1770 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1771 | target_gdbarch (), | |
1772 | NULL); | |
1773 | SELF_CHECK (regcache != NULL); | |
1774 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1775 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1776 | |
1777 | /* Get regcache from ptid3, a new regcache is added to | |
1778 | current_regcache. */ | |
1779 | regcache = get_thread_arch_aspace_regcache (ptid3, | |
1780 | target_gdbarch (), | |
1781 | NULL); | |
1782 | SELF_CHECK (regcache != NULL); | |
1783 | SELF_CHECK (regcache->ptid () == ptid3); | |
e521e87e | 1784 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1785 | |
1786 | /* Get regcache from ptid2 again, nothing is added to | |
1787 | current_regcache. */ | |
1788 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1789 | target_gdbarch (), | |
1790 | NULL); | |
1791 | SELF_CHECK (regcache != NULL); | |
1792 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1793 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1794 | |
1795 | /* Mark ptid2 is changed, so regcache of ptid2 should be removed from | |
1796 | current_regcache. */ | |
1797 | registers_changed_ptid (ptid2); | |
e521e87e | 1798 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1799 | } |
1800 | ||
1b30aaa5 YQ |
1801 | static void test_target_fetch_registers (target_ops *self, regcache *regs, |
1802 | int regno); | |
1803 | static void test_target_store_registers (target_ops *self, regcache *regs, | |
1804 | int regno); | |
1805 | static enum target_xfer_status | |
1806 | test_target_xfer_partial (struct target_ops *ops, | |
1807 | enum target_object object, | |
1808 | const char *annex, gdb_byte *readbuf, | |
1809 | const gdb_byte *writebuf, | |
1810 | ULONGEST offset, ULONGEST len, | |
1811 | ULONGEST *xfered_len); | |
1812 | ||
1813 | class target_ops_no_register : public test_target_ops | |
1814 | { | |
1815 | public: | |
1816 | target_ops_no_register () | |
1817 | : test_target_ops {} | |
1818 | { | |
1819 | to_fetch_registers = test_target_fetch_registers; | |
1820 | to_store_registers = test_target_store_registers; | |
1821 | to_xfer_partial = test_target_xfer_partial; | |
1822 | ||
1823 | to_data = this; | |
1824 | } | |
1825 | ||
1826 | void reset () | |
1827 | { | |
1828 | fetch_registers_called = 0; | |
1829 | store_registers_called = 0; | |
1830 | xfer_partial_called = 0; | |
1831 | } | |
1832 | ||
1833 | unsigned int fetch_registers_called = 0; | |
1834 | unsigned int store_registers_called = 0; | |
1835 | unsigned int xfer_partial_called = 0; | |
1836 | }; | |
1837 | ||
1838 | static void | |
1839 | test_target_fetch_registers (target_ops *self, regcache *regs, int regno) | |
1840 | { | |
1841 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1842 | ||
1843 | /* Mark register available. */ | |
1844 | regs->raw_supply_zeroed (regno); | |
1845 | ops->fetch_registers_called++; | |
1846 | } | |
1847 | ||
1848 | static void | |
1849 | test_target_store_registers (target_ops *self, regcache *regs, int regno) | |
1850 | { | |
1851 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1852 | ||
1853 | ops->store_registers_called++; | |
1854 | } | |
1855 | ||
1856 | static enum target_xfer_status | |
1857 | test_target_xfer_partial (struct target_ops *self, enum target_object object, | |
1858 | const char *annex, gdb_byte *readbuf, | |
1859 | const gdb_byte *writebuf, | |
1860 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
1861 | { | |
1862 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1863 | ||
1864 | ops->xfer_partial_called++; | |
1865 | ||
1866 | *xfered_len = len; | |
1867 | return TARGET_XFER_OK; | |
1868 | } | |
1869 | ||
1870 | class readwrite_regcache : public regcache | |
1871 | { | |
1872 | public: | |
1873 | readwrite_regcache (struct gdbarch *gdbarch) | |
1874 | : regcache (gdbarch, nullptr, false) | |
1875 | {} | |
1876 | }; | |
1877 | ||
1878 | /* Test regcache::cooked_read gets registers from raw registers and | |
1879 | memory instead of target to_{fetch,store}_registers. */ | |
1880 | ||
1881 | static void | |
1882 | cooked_read_test (struct gdbarch *gdbarch) | |
1883 | { | |
1884 | /* Error out if debugging something, because we're going to push the | |
1885 | test target, which would pop any existing target. */ | |
1886 | if (current_target.to_stratum >= process_stratum) | |
1887 | error (_("target already pushed")); | |
1888 | ||
1889 | /* Create a mock environment. An inferior with a thread, with a | |
1890 | process_stratum target pushed. */ | |
1891 | ||
1892 | target_ops_no_register mock_target; | |
1893 | ptid_t mock_ptid (1, 1); | |
1894 | inferior mock_inferior (mock_ptid.pid ()); | |
1895 | address_space mock_aspace {}; | |
1896 | mock_inferior.gdbarch = gdbarch; | |
1897 | mock_inferior.aspace = &mock_aspace; | |
1898 | thread_info mock_thread (&mock_inferior, mock_ptid); | |
1899 | ||
1900 | scoped_restore restore_thread_list | |
1901 | = make_scoped_restore (&thread_list, &mock_thread); | |
1902 | ||
1903 | /* Add the mock inferior to the inferior list so that look ups by | |
1904 | target+ptid can find it. */ | |
1905 | scoped_restore restore_inferior_list | |
1906 | = make_scoped_restore (&inferior_list); | |
1907 | inferior_list = &mock_inferior; | |
1908 | ||
1909 | /* Switch to the mock inferior. */ | |
1910 | scoped_restore_current_inferior restore_current_inferior; | |
1911 | set_current_inferior (&mock_inferior); | |
1912 | ||
1913 | /* Push the process_stratum target so we can mock accessing | |
1914 | registers. */ | |
1915 | push_target (&mock_target); | |
1916 | ||
1917 | /* Pop it again on exit (return/exception). */ | |
1918 | struct on_exit | |
1919 | { | |
1920 | ~on_exit () | |
1921 | { | |
1922 | pop_all_targets_at_and_above (process_stratum); | |
1923 | } | |
1924 | } pop_targets; | |
1925 | ||
1926 | /* Switch to the mock thread. */ | |
1927 | scoped_restore restore_inferior_ptid | |
1928 | = make_scoped_restore (&inferior_ptid, mock_ptid); | |
1929 | ||
1930 | /* Test that read one raw register from regcache_no_target will go | |
1931 | to the target layer. */ | |
1932 | int regnum; | |
1933 | ||
1934 | /* Find a raw register which size isn't zero. */ | |
1935 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) | |
1936 | { | |
1937 | if (register_size (gdbarch, regnum) != 0) | |
1938 | break; | |
1939 | } | |
1940 | ||
1941 | readwrite_regcache readwrite (gdbarch); | |
1942 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1943 | ||
1944 | readwrite.raw_read (regnum, buf.data ()); | |
1945 | ||
1946 | /* raw_read calls target_fetch_registers. */ | |
1947 | SELF_CHECK (mock_target.fetch_registers_called > 0); | |
1948 | mock_target.reset (); | |
1949 | ||
1950 | /* Mark all raw registers valid, so the following raw registers | |
1951 | accesses won't go to target. */ | |
1952 | for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
1953 | readwrite.raw_update (i); | |
1954 | ||
1955 | mock_target.reset (); | |
1956 | /* Then, read all raw and pseudo registers, and don't expect calling | |
1957 | to_{fetch,store}_registers. */ | |
1958 | for (int regnum = 0; | |
1959 | regnum < gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
1960 | regnum++) | |
1961 | { | |
1962 | if (register_size (gdbarch, regnum) == 0) | |
1963 | continue; | |
1964 | ||
1965 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1966 | ||
1967 | SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum, buf.data ())); | |
1968 | ||
dc711524 YQ |
1969 | SELF_CHECK (mock_target.fetch_registers_called == 0); |
1970 | SELF_CHECK (mock_target.store_registers_called == 0); | |
1b30aaa5 YQ |
1971 | |
1972 | /* Some SPU pseudo registers are got via TARGET_OBJECT_SPU. */ | |
1973 | if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu) | |
1974 | SELF_CHECK (mock_target.xfer_partial_called == 0); | |
1975 | ||
1976 | mock_target.reset (); | |
1977 | } | |
a63f2d2f | 1978 | |
215c69dc | 1979 | readonly_detached_regcache readonly (readwrite); |
a63f2d2f YQ |
1980 | |
1981 | /* GDB may go to target layer to fetch all registers and memory for | |
1982 | readonly regcache. */ | |
1983 | mock_target.reset (); | |
1984 | ||
1985 | for (int regnum = 0; | |
1986 | regnum < gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
1987 | regnum++) | |
1988 | { | |
a63f2d2f YQ |
1989 | if (register_size (gdbarch, regnum) == 0) |
1990 | continue; | |
1991 | ||
1992 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1993 | enum register_status status = readonly.cooked_read (regnum, | |
1994 | buf.data ()); | |
1995 | ||
1996 | if (regnum < gdbarch_num_regs (gdbarch)) | |
1997 | { | |
1998 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1999 | ||
2000 | if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 | |
2001 | || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh | |
2002 | || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 | |
2003 | || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep | |
2004 | || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 | |
2005 | || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 | |
2006 | || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score) | |
2007 | { | |
2008 | /* Raw registers. If raw registers are not in save_reggroup, | |
2009 | their status are unknown. */ | |
2010 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
2011 | SELF_CHECK (status == REG_VALID); | |
2012 | else | |
2013 | SELF_CHECK (status == REG_UNKNOWN); | |
2014 | } | |
2015 | else | |
2016 | SELF_CHECK (status == REG_VALID); | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
2021 | SELF_CHECK (status == REG_VALID); | |
2022 | else | |
2023 | { | |
2024 | /* If pseudo registers are not in save_reggroup, some of | |
2025 | them can be computed from saved raw registers, but some | |
2026 | of them are unknown. */ | |
2027 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
2028 | ||
2029 | if (bfd_arch == bfd_arch_frv | |
2030 | || bfd_arch == bfd_arch_m32c | |
2031 | || bfd_arch == bfd_arch_mep | |
2032 | || bfd_arch == bfd_arch_sh) | |
2033 | SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); | |
2034 | else if (bfd_arch == bfd_arch_mips | |
2035 | || bfd_arch == bfd_arch_h8300) | |
2036 | SELF_CHECK (status == REG_UNKNOWN); | |
2037 | else | |
2038 | SELF_CHECK (status == REG_VALID); | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | SELF_CHECK (mock_target.fetch_registers_called == 0); | |
2043 | SELF_CHECK (mock_target.store_registers_called == 0); | |
2044 | SELF_CHECK (mock_target.xfer_partial_called == 0); | |
2045 | ||
2046 | mock_target.reset (); | |
2047 | } | |
1b30aaa5 YQ |
2048 | } |
2049 | ||
ec7a5fcb YQ |
2050 | /* Test regcache::cooked_write by writing some expected contents to |
2051 | registers, and checking that contents read from registers and the | |
2052 | expected contents are the same. */ | |
2053 | ||
2054 | static void | |
2055 | cooked_write_test (struct gdbarch *gdbarch) | |
2056 | { | |
2057 | /* Error out if debugging something, because we're going to push the | |
2058 | test target, which would pop any existing target. */ | |
2059 | if (current_target.to_stratum >= process_stratum) | |
2060 | error (_("target already pushed")); | |
2061 | ||
2062 | /* Create a mock environment. A process_stratum target pushed. */ | |
2063 | ||
2064 | target_ops_no_register mock_target; | |
2065 | ||
2066 | /* Push the process_stratum target so we can mock accessing | |
2067 | registers. */ | |
2068 | push_target (&mock_target); | |
2069 | ||
2070 | /* Pop it again on exit (return/exception). */ | |
2071 | struct on_exit | |
2072 | { | |
2073 | ~on_exit () | |
2074 | { | |
2075 | pop_all_targets_at_and_above (process_stratum); | |
2076 | } | |
2077 | } pop_targets; | |
2078 | ||
2079 | readwrite_regcache readwrite (gdbarch); | |
2080 | ||
2081 | const int num_regs = (gdbarch_num_regs (gdbarch) | |
2082 | + gdbarch_num_pseudo_regs (gdbarch)); | |
2083 | ||
2084 | for (auto regnum = 0; regnum < num_regs; regnum++) | |
2085 | { | |
2086 | if (register_size (gdbarch, regnum) == 0 | |
2087 | || gdbarch_cannot_store_register (gdbarch, regnum)) | |
2088 | continue; | |
2089 | ||
2090 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
2091 | ||
2092 | if ((bfd_arch == bfd_arch_sparc | |
2093 | /* SPARC64_CWP_REGNUM, SPARC64_PSTATE_REGNUM, | |
2094 | SPARC64_ASI_REGNUM and SPARC64_CCR_REGNUM are hard to test. */ | |
2095 | && gdbarch_ptr_bit (gdbarch) == 64 | |
2096 | && (regnum >= gdbarch_num_regs (gdbarch) | |
2097 | && regnum <= gdbarch_num_regs (gdbarch) + 4)) | |
2098 | || (bfd_arch == bfd_arch_sh | |
2099 | /* FPSCR_C_REGNUM in sh64 is hard to test. */ | |
2100 | && gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh5 | |
2101 | && regnum == 243) | |
2102 | || (bfd_arch == bfd_arch_spu | |
2103 | /* SPU pseudo registers except SPU_SP_REGNUM are got by | |
2104 | TARGET_OBJECT_SPU. */ | |
2105 | && regnum >= gdbarch_num_regs (gdbarch) && regnum != 130)) | |
2106 | continue; | |
2107 | ||
2108 | std::vector<gdb_byte> expected (register_size (gdbarch, regnum), 0); | |
2109 | std::vector<gdb_byte> buf (register_size (gdbarch, regnum), 0); | |
2110 | const auto type = register_type (gdbarch, regnum); | |
2111 | ||
2112 | if (TYPE_CODE (type) == TYPE_CODE_FLT | |
2113 | || TYPE_CODE (type) == TYPE_CODE_DECFLOAT) | |
2114 | { | |
2115 | /* Generate valid float format. */ | |
2116 | target_float_from_string (expected.data (), type, "1.25"); | |
2117 | } | |
2118 | else if (TYPE_CODE (type) == TYPE_CODE_INT | |
2119 | || TYPE_CODE (type) == TYPE_CODE_ARRAY | |
2120 | || TYPE_CODE (type) == TYPE_CODE_PTR | |
2121 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
2122 | || TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
2123 | { | |
2124 | if (bfd_arch == bfd_arch_ia64 | |
2125 | || (regnum >= gdbarch_num_regs (gdbarch) | |
2126 | && (bfd_arch == bfd_arch_xtensa | |
2127 | || bfd_arch == bfd_arch_bfin | |
2128 | || bfd_arch == bfd_arch_m32c | |
2129 | /* m68hc11 pseudo registers are in memory. */ | |
2130 | || bfd_arch == bfd_arch_m68hc11 | |
2131 | || bfd_arch == bfd_arch_m68hc12 | |
2132 | || bfd_arch == bfd_arch_s390)) | |
2133 | || (bfd_arch == bfd_arch_frv | |
2134 | /* FRV pseudo registers except iacc0. */ | |
2135 | && regnum > gdbarch_num_regs (gdbarch))) | |
2136 | { | |
2137 | /* Skip setting the expected values for some architecture | |
2138 | registers. */ | |
2139 | } | |
2140 | else if (bfd_arch == bfd_arch_rl78 && regnum == 40) | |
2141 | { | |
2142 | /* RL78_PC_REGNUM */ | |
2143 | for (auto j = 0; j < register_size (gdbarch, regnum) - 1; j++) | |
2144 | expected[j] = j; | |
2145 | } | |
2146 | else | |
2147 | { | |
2148 | for (auto j = 0; j < register_size (gdbarch, regnum); j++) | |
2149 | expected[j] = j; | |
2150 | } | |
2151 | } | |
2152 | else if (TYPE_CODE (type) == TYPE_CODE_FLAGS) | |
2153 | { | |
2154 | /* No idea how to test flags. */ | |
2155 | continue; | |
2156 | } | |
2157 | else | |
2158 | { | |
2159 | /* If we don't know how to create the expected value for the | |
2160 | this type, make it fail. */ | |
2161 | SELF_CHECK (0); | |
2162 | } | |
2163 | ||
2164 | readwrite.cooked_write (regnum, expected.data ()); | |
2165 | ||
2166 | SELF_CHECK (readwrite.cooked_read (regnum, buf.data ()) == REG_VALID); | |
2167 | SELF_CHECK (expected == buf); | |
2168 | } | |
2169 | } | |
2170 | ||
8248946c YQ |
2171 | } // namespace selftests |
2172 | #endif /* GDB_SELF_TEST */ | |
2173 | ||
32178cab MS |
2174 | void |
2175 | _initialize_regcache (void) | |
2176 | { | |
3e43a32a MS |
2177 | regcache_descr_handle |
2178 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 2179 | |
f4c5303c | 2180 | observer_attach_target_changed (regcache_observer_target_changed); |
e521e87e | 2181 | observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed); |
f4c5303c | 2182 | |
705152c5 | 2183 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 2184 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 2185 | |
3e43a32a MS |
2186 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
2187 | _("Print the internal register configuration.\n" | |
2188 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 2189 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
2190 | maintenance_print_raw_registers, |
2191 | _("Print the internal register configuration " | |
2192 | "including raw values.\n" | |
2193 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 2194 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
2195 | maintenance_print_cooked_registers, |
2196 | _("Print the internal register configuration " | |
2197 | "including cooked values.\n" | |
2198 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 2199 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
2200 | maintenance_print_register_groups, |
2201 | _("Print the internal register configuration " | |
2202 | "including each register's group.\n" | |
2203 | "Takes an optional file parameter."), | |
af030b9a | 2204 | &maintenanceprintlist); |
c21236dc PA |
2205 | add_cmd ("remote-registers", class_maintenance, |
2206 | maintenance_print_remote_registers, _("\ | |
2207 | Print the internal register configuration including each register's\n\ | |
2208 | remote register number and buffer offset in the g/G packets.\n\ | |
2209 | Takes an optional file parameter."), | |
2210 | &maintenanceprintlist); | |
1526853e | 2211 | |
8248946c | 2212 | #if GDB_SELF_TEST |
1526853e | 2213 | selftests::register_test ("current_regcache", selftests::current_regcache_test); |
1b30aaa5 YQ |
2214 | |
2215 | selftests::register_test_foreach_arch ("regcache::cooked_read_test", | |
2216 | selftests::cooked_read_test); | |
ec7a5fcb YQ |
2217 | selftests::register_test_foreach_arch ("regcache::cooked_write_test", |
2218 | selftests::cooked_write_test); | |
8248946c | 2219 | #endif |
32178cab | 2220 | } |