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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 | ||
8b86c959 | 184 | regcache::regcache (gdbarch *gdbarch, const address_space *aspace_, |
ef79d9a3 YQ |
185 | bool readonly_p_) |
186 | : m_aspace (aspace_), m_readonly_p (readonly_p_) | |
3fadccb3 | 187 | { |
ef79d9a3 YQ |
188 | gdb_assert (gdbarch != NULL); |
189 | m_descr = regcache_descr (gdbarch); | |
4621115f | 190 | |
ef79d9a3 | 191 | if (m_readonly_p) |
4621115f | 192 | { |
ef79d9a3 YQ |
193 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers); |
194 | m_register_status = XCNEWVEC (signed char, | |
6c5218df | 195 | m_descr->nr_cooked_registers); |
4621115f YQ |
196 | } |
197 | else | |
198 | { | |
ef79d9a3 | 199 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers); |
d999647b | 200 | m_register_status = XCNEWVEC (signed char, gdbarch_num_regs (gdbarch)); |
4621115f | 201 | } |
ef79d9a3 YQ |
202 | m_ptid = minus_one_ptid; |
203 | } | |
4621115f | 204 | |
deb1fa3e YQ |
205 | static enum register_status |
206 | do_cooked_read (void *src, int regnum, gdb_byte *buf) | |
207 | { | |
208 | struct regcache *regcache = (struct regcache *) src; | |
209 | ||
210 | return regcache_cooked_read (regcache, regnum, buf); | |
211 | } | |
212 | ||
213 | regcache::regcache (readonly_t, const regcache &src) | |
f26ae15b | 214 | : regcache (src.arch (), nullptr, true) |
deb1fa3e YQ |
215 | { |
216 | gdb_assert (!src.m_readonly_p); | |
217 | save (do_cooked_read, (void *) &src); | |
218 | } | |
219 | ||
ef79d9a3 YQ |
220 | gdbarch * |
221 | regcache::arch () const | |
222 | { | |
223 | return m_descr->gdbarch; | |
224 | } | |
3fadccb3 | 225 | |
ddaaf0fb SM |
226 | /* See regcache.h. */ |
227 | ||
228 | ptid_t | |
229 | regcache_get_ptid (const struct regcache *regcache) | |
230 | { | |
ef79d9a3 | 231 | gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid)); |
ddaaf0fb | 232 | |
ef79d9a3 | 233 | return regcache->ptid (); |
ddaaf0fb SM |
234 | } |
235 | ||
b292235f | 236 | /* Cleanup class for invalidating a register. */ |
b94ade42 | 237 | |
b292235f | 238 | class regcache_invalidator |
b94ade42 | 239 | { |
b292235f | 240 | public: |
b94ade42 | 241 | |
b292235f TT |
242 | regcache_invalidator (struct regcache *regcache, int regnum) |
243 | : m_regcache (regcache), | |
244 | m_regnum (regnum) | |
245 | { | |
246 | } | |
b94ade42 | 247 | |
b292235f TT |
248 | ~regcache_invalidator () |
249 | { | |
250 | if (m_regcache != nullptr) | |
251 | regcache_invalidate (m_regcache, m_regnum); | |
252 | } | |
b94ade42 | 253 | |
b292235f | 254 | DISABLE_COPY_AND_ASSIGN (regcache_invalidator); |
b94ade42 | 255 | |
b292235f TT |
256 | void release () |
257 | { | |
258 | m_regcache = nullptr; | |
259 | } | |
260 | ||
261 | private: | |
262 | ||
263 | struct regcache *m_regcache; | |
264 | int m_regnum; | |
265 | }; | |
b94ade42 | 266 | |
51b1fe4e AC |
267 | /* Return a pointer to register REGNUM's buffer cache. */ |
268 | ||
ef79d9a3 YQ |
269 | gdb_byte * |
270 | regcache::register_buffer (int regnum) const | |
51b1fe4e | 271 | { |
ef79d9a3 | 272 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
273 | } |
274 | ||
2d28509a | 275 | void |
ef79d9a3 YQ |
276 | regcache_save (struct regcache *regcache, |
277 | regcache_cooked_read_ftype *cooked_read, void *src) | |
2d28509a | 278 | { |
ef79d9a3 YQ |
279 | regcache->save (cooked_read, src); |
280 | } | |
281 | ||
282 | void | |
283 | regcache::save (regcache_cooked_read_ftype *cooked_read, | |
284 | void *src) | |
285 | { | |
286 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 287 | int regnum; |
123f5f96 | 288 | |
2d28509a | 289 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 290 | end up trying to write the register values back out to the |
2d28509a | 291 | target. */ |
ef79d9a3 | 292 | gdb_assert (m_readonly_p); |
2d28509a | 293 | /* Clear the dest. */ |
ef79d9a3 | 294 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
6c5218df | 295 | memset (m_register_status, 0, m_descr->nr_cooked_registers); |
2d28509a | 296 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
297 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
298 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 299 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 300 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
301 | { |
302 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
303 | { | |
50d6adef AH |
304 | gdb_byte *dst_buf = register_buffer (regnum); |
305 | enum register_status status = cooked_read (src, regnum, dst_buf); | |
123f5f96 | 306 | |
50d6adef AH |
307 | gdb_assert (status != REG_UNKNOWN); |
308 | ||
309 | if (status != REG_VALID) | |
310 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 311 | |
ef79d9a3 | 312 | m_register_status[regnum] = status; |
2d28509a AC |
313 | } |
314 | } | |
315 | } | |
316 | ||
ef79d9a3 YQ |
317 | void |
318 | regcache::restore (struct regcache *src) | |
2d28509a | 319 | { |
ef79d9a3 | 320 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 321 | int regnum; |
123f5f96 | 322 | |
5602984a AC |
323 | /* The dst had better not be read-only. If it is, the `restore' |
324 | doesn't make much sense. */ | |
ef79d9a3 YQ |
325 | gdb_assert (!m_readonly_p); |
326 | gdb_assert (src->m_readonly_p); | |
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 | ||
3fadccb3 AC |
341 | void |
342 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
343 | { | |
3fadccb3 | 344 | gdb_assert (src != NULL && dst != NULL); |
ef79d9a3 | 345 | gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch); |
3fadccb3 | 346 | gdb_assert (src != dst); |
cfb7e58b | 347 | gdb_assert (src->m_readonly_p && !dst->m_readonly_p); |
6c95b8df | 348 | |
cfb7e58b | 349 | dst->restore (src); |
3fadccb3 AC |
350 | } |
351 | ||
352 | struct regcache * | |
353 | regcache_dup (struct regcache *src) | |
354 | { | |
deb1fa3e | 355 | return new regcache (regcache::readonly, *src); |
3fadccb3 AC |
356 | } |
357 | ||
39181896 | 358 | enum register_status |
ee99023e | 359 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
360 | { |
361 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
362 | return regcache->get_register_status (regnum); |
363 | } | |
364 | ||
365 | enum register_status | |
366 | regcache::get_register_status (int regnum) const | |
367 | { | |
6ed7ea50 | 368 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
369 | if (m_readonly_p) |
370 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
6ed7ea50 | 371 | else |
d999647b | 372 | gdb_assert (regnum < num_raw_registers ()); |
6ed7ea50 | 373 | |
ef79d9a3 | 374 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
375 | } |
376 | ||
9c5ea4d9 UW |
377 | void |
378 | regcache_invalidate (struct regcache *regcache, int regnum) | |
379 | { | |
380 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 381 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
382 | } |
383 | ||
ef79d9a3 YQ |
384 | void |
385 | regcache::invalidate (int regnum) | |
386 | { | |
ef79d9a3 | 387 | gdb_assert (!m_readonly_p); |
4e888c28 | 388 | assert_regnum (regnum); |
ef79d9a3 YQ |
389 | m_register_status[regnum] = REG_UNKNOWN; |
390 | } | |
9c5ea4d9 | 391 | |
4e888c28 YQ |
392 | void |
393 | regcache::assert_regnum (int regnum) const | |
394 | { | |
d999647b | 395 | gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (arch ())); |
4e888c28 YQ |
396 | } |
397 | ||
3fadccb3 | 398 | /* Global structure containing the current regcache. */ |
3fadccb3 | 399 | |
5ebd2499 | 400 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
401 | recording if the register values have been changed (eg. by the |
402 | user). Therefore all registers must be written back to the | |
403 | target when appropriate. */ | |
e521e87e | 404 | std::forward_list<regcache *> regcache::current_regcache; |
c2250ad1 UW |
405 | |
406 | struct regcache * | |
e2d96639 YQ |
407 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
408 | struct address_space *aspace) | |
c2250ad1 | 409 | { |
e521e87e | 410 | for (const auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
411 | if (ptid_equal (regcache->ptid (), ptid) && regcache->arch () == gdbarch) |
412 | return regcache; | |
594f7785 | 413 | |
94bb8dfe | 414 | regcache *new_regcache = new regcache (gdbarch, aspace, false); |
594f7785 | 415 | |
e521e87e | 416 | regcache::current_regcache.push_front (new_regcache); |
ef79d9a3 | 417 | new_regcache->set_ptid (ptid); |
e2d96639 | 418 | |
e2d96639 YQ |
419 | return new_regcache; |
420 | } | |
421 | ||
422 | struct regcache * | |
423 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
424 | { | |
ed4227b7 | 425 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 426 | |
e2d96639 | 427 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
428 | } |
429 | ||
c2250ad1 UW |
430 | static ptid_t current_thread_ptid; |
431 | static struct gdbarch *current_thread_arch; | |
432 | ||
433 | struct regcache * | |
434 | get_thread_regcache (ptid_t ptid) | |
435 | { | |
436 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
437 | { | |
438 | current_thread_ptid = ptid; | |
439 | current_thread_arch = target_thread_architecture (ptid); | |
440 | } | |
441 | ||
442 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
443 | } | |
444 | ||
445 | struct regcache * | |
446 | get_current_regcache (void) | |
594f7785 UW |
447 | { |
448 | return get_thread_regcache (inferior_ptid); | |
449 | } | |
32178cab | 450 | |
361c8ade GB |
451 | /* See common/common-regcache.h. */ |
452 | ||
453 | struct regcache * | |
454 | get_thread_regcache_for_ptid (ptid_t ptid) | |
455 | { | |
456 | return get_thread_regcache (ptid); | |
457 | } | |
32178cab | 458 | |
f4c5303c OF |
459 | /* Observer for the target_changed event. */ |
460 | ||
2c0b251b | 461 | static void |
f4c5303c OF |
462 | regcache_observer_target_changed (struct target_ops *target) |
463 | { | |
464 | registers_changed (); | |
465 | } | |
466 | ||
5231c1fd PA |
467 | /* Update global variables old ptids to hold NEW_PTID if they were |
468 | holding OLD_PTID. */ | |
e521e87e YQ |
469 | void |
470 | regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 471 | { |
e521e87e | 472 | for (auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
473 | { |
474 | if (ptid_equal (regcache->ptid (), old_ptid)) | |
475 | regcache->set_ptid (new_ptid); | |
476 | } | |
5231c1fd PA |
477 | } |
478 | ||
32178cab MS |
479 | /* Low level examining and depositing of registers. |
480 | ||
481 | The caller is responsible for making sure that the inferior is | |
482 | stopped before calling the fetching routines, or it will get | |
483 | garbage. (a change from GDB version 3, in which the caller got the | |
484 | value from the last stop). */ | |
485 | ||
486 | /* REGISTERS_CHANGED () | |
487 | ||
488 | Indicate that registers may have changed, so invalidate the cache. */ | |
489 | ||
490 | void | |
e66408ed | 491 | registers_changed_ptid (ptid_t ptid) |
32178cab | 492 | { |
e521e87e | 493 | for (auto oit = regcache::current_regcache.before_begin (), |
94bb8dfe | 494 | it = std::next (oit); |
e521e87e | 495 | it != regcache::current_regcache.end (); |
94bb8dfe | 496 | ) |
c2250ad1 | 497 | { |
94bb8dfe | 498 | if (ptid_match ((*it)->ptid (), ptid)) |
e66408ed | 499 | { |
94bb8dfe | 500 | delete *it; |
e521e87e | 501 | it = regcache::current_regcache.erase_after (oit); |
e66408ed | 502 | } |
94bb8dfe YQ |
503 | else |
504 | oit = it++; | |
c2250ad1 | 505 | } |
32178cab | 506 | |
c34fd852 | 507 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
508 | { |
509 | current_thread_ptid = null_ptid; | |
510 | current_thread_arch = NULL; | |
511 | } | |
32178cab | 512 | |
c34fd852 | 513 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
514 | { |
515 | /* We just deleted the regcache of the current thread. Need to | |
516 | forget about any frames we have cached, too. */ | |
517 | reinit_frame_cache (); | |
518 | } | |
519 | } | |
c2250ad1 | 520 | |
041274d8 PA |
521 | void |
522 | registers_changed (void) | |
523 | { | |
524 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 525 | |
32178cab MS |
526 | /* Force cleanup of any alloca areas if using C alloca instead of |
527 | a builtin alloca. This particular call is used to clean up | |
528 | areas allocated by low level target code which may build up | |
529 | during lengthy interactions between gdb and the target before | |
530 | gdb gives control to the user (ie watchpoints). */ | |
531 | alloca (0); | |
32178cab MS |
532 | } |
533 | ||
8e368124 AH |
534 | void |
535 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 536 | { |
8e368124 | 537 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
538 | |
539 | regcache->raw_update (regnum); | |
540 | } | |
541 | ||
542 | void | |
543 | regcache::raw_update (int regnum) | |
544 | { | |
4e888c28 | 545 | assert_regnum (regnum); |
8e368124 | 546 | |
3fadccb3 AC |
547 | /* Make certain that the register cache is up-to-date with respect |
548 | to the current thread. This switching shouldn't be necessary | |
549 | only there is still only one target side register cache. Sigh! | |
550 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 551 | |
ef79d9a3 | 552 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 553 | { |
ef79d9a3 | 554 | target_fetch_registers (this, regnum); |
788c8b10 PA |
555 | |
556 | /* A number of targets can't access the whole set of raw | |
557 | registers (because the debug API provides no means to get at | |
558 | them). */ | |
ef79d9a3 YQ |
559 | if (m_register_status[regnum] == REG_UNKNOWN) |
560 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 561 | } |
8e368124 AH |
562 | } |
563 | ||
564 | enum register_status | |
565 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
566 | { |
567 | return regcache->raw_read (regnum, buf); | |
568 | } | |
569 | ||
570 | enum register_status | |
571 | regcache::raw_read (int regnum, gdb_byte *buf) | |
8e368124 AH |
572 | { |
573 | gdb_assert (buf != NULL); | |
ef79d9a3 | 574 | raw_update (regnum); |
05d1431c | 575 | |
ef79d9a3 YQ |
576 | if (m_register_status[regnum] != REG_VALID) |
577 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 578 | else |
ef79d9a3 YQ |
579 | memcpy (buf, register_buffer (regnum), |
580 | m_descr->sizeof_register[regnum]); | |
05d1431c | 581 | |
ef79d9a3 | 582 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
583 | } |
584 | ||
05d1431c | 585 | enum register_status |
28fc6740 | 586 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
587 | { |
588 | gdb_assert (regcache != NULL); | |
6f98355c | 589 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
590 | } |
591 | ||
6f98355c | 592 | template<typename T, typename> |
ef79d9a3 | 593 | enum register_status |
6f98355c | 594 | regcache::raw_read (int regnum, T *val) |
28fc6740 | 595 | { |
2d522557 | 596 | gdb_byte *buf; |
05d1431c | 597 | enum register_status status; |
123f5f96 | 598 | |
4e888c28 | 599 | assert_regnum (regnum); |
ef79d9a3 YQ |
600 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
601 | status = raw_read (regnum, buf); | |
05d1431c | 602 | if (status == REG_VALID) |
6f98355c YQ |
603 | *val = extract_integer<T> (buf, |
604 | m_descr->sizeof_register[regnum], | |
605 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
606 | else |
607 | *val = 0; | |
608 | return status; | |
28fc6740 AC |
609 | } |
610 | ||
05d1431c | 611 | enum register_status |
28fc6740 AC |
612 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
613 | ULONGEST *val) | |
ef79d9a3 YQ |
614 | { |
615 | gdb_assert (regcache != NULL); | |
6f98355c | 616 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
617 | } |
618 | ||
c00dcbe9 MK |
619 | void |
620 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
621 | { |
622 | gdb_assert (regcache != NULL); | |
6f98355c | 623 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
624 | } |
625 | ||
6f98355c | 626 | template<typename T, typename> |
ef79d9a3 | 627 | void |
6f98355c | 628 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 629 | { |
7c543f7b | 630 | gdb_byte *buf; |
123f5f96 | 631 | |
4e888c28 | 632 | assert_regnum (regnum); |
ef79d9a3 | 633 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); |
6f98355c YQ |
634 | store_integer (buf, m_descr->sizeof_register[regnum], |
635 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 636 | raw_write (regnum, buf); |
c00dcbe9 MK |
637 | } |
638 | ||
639 | void | |
640 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
641 | ULONGEST val) | |
ef79d9a3 YQ |
642 | { |
643 | gdb_assert (regcache != NULL); | |
6f98355c | 644 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
645 | } |
646 | ||
9fd15b2e YQ |
647 | LONGEST |
648 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
649 | { | |
650 | LONGEST value; | |
651 | enum register_status status; | |
652 | ||
653 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
654 | if (status == REG_UNAVAILABLE) | |
655 | throw_error (NOT_AVAILABLE_ERROR, | |
656 | _("Register %d is not available"), regnum); | |
657 | return value; | |
658 | } | |
659 | ||
05d1431c | 660 | enum register_status |
2d522557 | 661 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
662 | { |
663 | return regcache->cooked_read (regnum, buf); | |
664 | } | |
665 | ||
666 | enum register_status | |
667 | regcache::cooked_read (int regnum, gdb_byte *buf) | |
68365089 | 668 | { |
d138e37a | 669 | gdb_assert (regnum >= 0); |
ef79d9a3 | 670 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 671 | if (regnum < num_raw_registers ()) |
ef79d9a3 YQ |
672 | return raw_read (regnum, buf); |
673 | else if (m_readonly_p | |
674 | && m_register_status[regnum] != REG_UNKNOWN) | |
05d1431c PA |
675 | { |
676 | /* Read-only register cache, perhaps the cooked value was | |
677 | cached? */ | |
ef79d9a3 YQ |
678 | if (m_register_status[regnum] == REG_VALID) |
679 | memcpy (buf, register_buffer (regnum), | |
680 | m_descr->sizeof_register[regnum]); | |
05d1431c | 681 | else |
ef79d9a3 | 682 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 683 | |
ef79d9a3 | 684 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 685 | } |
ef79d9a3 | 686 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
687 | { |
688 | struct value *mark, *computed; | |
689 | enum register_status result = REG_VALID; | |
690 | ||
691 | mark = value_mark (); | |
692 | ||
ef79d9a3 YQ |
693 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
694 | this, regnum); | |
3543a589 TT |
695 | if (value_entirely_available (computed)) |
696 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 697 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
698 | else |
699 | { | |
ef79d9a3 | 700 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
701 | result = REG_UNAVAILABLE; |
702 | } | |
703 | ||
704 | value_free_to_mark (mark); | |
705 | ||
706 | return result; | |
707 | } | |
d138e37a | 708 | else |
ef79d9a3 | 709 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 710 | regnum, buf); |
61a0eb5b AC |
711 | } |
712 | ||
3543a589 TT |
713 | struct value * |
714 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
715 | { |
716 | return regcache->cooked_read_value (regnum); | |
717 | } | |
718 | ||
719 | struct value * | |
720 | regcache::cooked_read_value (int regnum) | |
3543a589 TT |
721 | { |
722 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 723 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 724 | |
d999647b | 725 | if (regnum < num_raw_registers () |
ef79d9a3 YQ |
726 | || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN) |
727 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) | |
3543a589 TT |
728 | { |
729 | struct value *result; | |
730 | ||
ef79d9a3 | 731 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
732 | VALUE_LVAL (result) = lval_register; |
733 | VALUE_REGNUM (result) = regnum; | |
734 | ||
735 | /* It is more efficient in general to do this delegation in this | |
736 | direction than in the other one, even though the value-based | |
737 | API is preferred. */ | |
ef79d9a3 YQ |
738 | if (cooked_read (regnum, |
739 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
740 | mark_value_bytes_unavailable (result, 0, |
741 | TYPE_LENGTH (value_type (result))); | |
742 | ||
743 | return result; | |
744 | } | |
745 | else | |
ef79d9a3 YQ |
746 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
747 | this, regnum); | |
3543a589 TT |
748 | } |
749 | ||
05d1431c | 750 | enum register_status |
a378f419 AC |
751 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
752 | LONGEST *val) | |
ef79d9a3 YQ |
753 | { |
754 | gdb_assert (regcache != NULL); | |
6f98355c | 755 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
756 | } |
757 | ||
6f98355c | 758 | template<typename T, typename> |
ef79d9a3 | 759 | enum register_status |
6f98355c | 760 | regcache::cooked_read (int regnum, T *val) |
a378f419 | 761 | { |
05d1431c | 762 | enum register_status status; |
2d522557 | 763 | gdb_byte *buf; |
123f5f96 | 764 | |
ef79d9a3 YQ |
765 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
766 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
767 | status = cooked_read (regnum, buf); | |
05d1431c | 768 | if (status == REG_VALID) |
6f98355c YQ |
769 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
770 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
771 | else |
772 | *val = 0; | |
773 | return status; | |
a378f419 AC |
774 | } |
775 | ||
05d1431c | 776 | enum register_status |
a378f419 AC |
777 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
778 | ULONGEST *val) | |
ef79d9a3 YQ |
779 | { |
780 | gdb_assert (regcache != NULL); | |
6f98355c | 781 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
782 | } |
783 | ||
a66a9c23 AC |
784 | void |
785 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
786 | LONGEST val) | |
ef79d9a3 YQ |
787 | { |
788 | gdb_assert (regcache != NULL); | |
6f98355c | 789 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
790 | } |
791 | ||
6f98355c | 792 | template<typename T, typename> |
ef79d9a3 | 793 | void |
6f98355c | 794 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 795 | { |
7c543f7b | 796 | gdb_byte *buf; |
123f5f96 | 797 | |
ef79d9a3 YQ |
798 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
799 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
800 | store_integer (buf, m_descr->sizeof_register[regnum], |
801 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 802 | cooked_write (regnum, buf); |
a66a9c23 AC |
803 | } |
804 | ||
805 | void | |
806 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
807 | ULONGEST val) | |
ef79d9a3 YQ |
808 | { |
809 | gdb_assert (regcache != NULL); | |
6f98355c | 810 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
811 | } |
812 | ||
20aa2c60 PA |
813 | /* See regcache.h. */ |
814 | ||
815 | void | |
816 | regcache_raw_set_cached_value (struct regcache *regcache, int regnum, | |
817 | const gdb_byte *buf) | |
818 | { | |
ef79d9a3 YQ |
819 | regcache->raw_set_cached_value (regnum, buf); |
820 | } | |
821 | ||
822 | void | |
823 | regcache::raw_set_cached_value (int regnum, const gdb_byte *buf) | |
824 | { | |
825 | memcpy (register_buffer (regnum), buf, | |
826 | m_descr->sizeof_register[regnum]); | |
827 | m_register_status[regnum] = REG_VALID; | |
20aa2c60 PA |
828 | } |
829 | ||
61a0eb5b | 830 | void |
2d522557 AC |
831 | regcache_raw_write (struct regcache *regcache, int regnum, |
832 | const gdb_byte *buf) | |
ef79d9a3 YQ |
833 | { |
834 | gdb_assert (regcache != NULL && buf != NULL); | |
835 | regcache->raw_write (regnum, buf); | |
836 | } | |
837 | ||
838 | void | |
839 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 840 | { |
594f7785 | 841 | |
ef79d9a3 | 842 | gdb_assert (buf != NULL); |
4e888c28 | 843 | assert_regnum (regnum); |
ef79d9a3 | 844 | gdb_assert (!m_readonly_p); |
3fadccb3 | 845 | |
3fadccb3 AC |
846 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
847 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 848 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
849 | return; |
850 | ||
3fadccb3 | 851 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 852 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
853 | if (get_register_status (regnum) == REG_VALID |
854 | && (memcmp (register_buffer (regnum), buf, | |
855 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
856 | return; |
857 | ||
ef79d9a3 YQ |
858 | target_prepare_to_store (this); |
859 | raw_set_cached_value (regnum, buf); | |
b94ade42 | 860 | |
b292235f TT |
861 | /* Invalidate the register after it is written, in case of a |
862 | failure. */ | |
863 | regcache_invalidator invalidator (this, regnum); | |
b94ade42 | 864 | |
ef79d9a3 | 865 | target_store_registers (this, regnum); |
594f7785 | 866 | |
b292235f TT |
867 | /* The target did not throw an error so we can discard invalidating |
868 | the register. */ | |
869 | invalidator.release (); | |
61a0eb5b AC |
870 | } |
871 | ||
68365089 | 872 | void |
2d522557 AC |
873 | regcache_cooked_write (struct regcache *regcache, int regnum, |
874 | const gdb_byte *buf) | |
ef79d9a3 YQ |
875 | { |
876 | regcache->cooked_write (regnum, buf); | |
877 | } | |
878 | ||
879 | void | |
880 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 881 | { |
d138e37a | 882 | gdb_assert (regnum >= 0); |
ef79d9a3 | 883 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
d999647b | 884 | if (regnum < num_raw_registers ()) |
ef79d9a3 | 885 | raw_write (regnum, buf); |
d138e37a | 886 | else |
ef79d9a3 | 887 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 888 | regnum, buf); |
61a0eb5b AC |
889 | } |
890 | ||
06c0b04e AC |
891 | /* Perform a partial register transfer using a read, modify, write |
892 | operation. */ | |
893 | ||
894 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
895 | void *buf); | |
896 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
897 | const void *buf); | |
898 | ||
ef79d9a3 YQ |
899 | enum register_status |
900 | regcache::xfer_part (int regnum, int offset, int len, void *in, | |
d3037ba6 | 901 | const void *out, bool is_raw) |
ef79d9a3 YQ |
902 | { |
903 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 904 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 905 | |
ef79d9a3 YQ |
906 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
907 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
908 | /* Something to do? */ |
909 | if (offset + len == 0) | |
05d1431c | 910 | return REG_VALID; |
0df8b418 | 911 | /* Read (when needed) ... */ |
06c0b04e AC |
912 | if (in != NULL |
913 | || offset > 0 | |
ef79d9a3 | 914 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 915 | { |
05d1431c PA |
916 | enum register_status status; |
917 | ||
d3037ba6 YQ |
918 | if (is_raw) |
919 | status = raw_read (regnum, reg); | |
920 | else | |
921 | status = cooked_read (regnum, reg); | |
05d1431c PA |
922 | if (status != REG_VALID) |
923 | return status; | |
06c0b04e | 924 | } |
0df8b418 | 925 | /* ... modify ... */ |
06c0b04e AC |
926 | if (in != NULL) |
927 | memcpy (in, reg + offset, len); | |
928 | if (out != NULL) | |
929 | memcpy (reg + offset, out, len); | |
930 | /* ... write (when needed). */ | |
931 | if (out != NULL) | |
932 | { | |
d3037ba6 YQ |
933 | if (is_raw) |
934 | raw_write (regnum, reg); | |
935 | else | |
936 | cooked_write (regnum, reg); | |
06c0b04e | 937 | } |
05d1431c PA |
938 | |
939 | return REG_VALID; | |
06c0b04e AC |
940 | } |
941 | ||
05d1431c | 942 | enum register_status |
06c0b04e | 943 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 944 | int offset, int len, gdb_byte *buf) |
06c0b04e | 945 | { |
ef79d9a3 YQ |
946 | return regcache->raw_read_part (regnum, offset, len, buf); |
947 | } | |
123f5f96 | 948 | |
ef79d9a3 YQ |
949 | enum register_status |
950 | regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
951 | { | |
4e888c28 | 952 | assert_regnum (regnum); |
d3037ba6 | 953 | return xfer_part (regnum, offset, len, buf, NULL, true); |
06c0b04e AC |
954 | } |
955 | ||
956 | void | |
957 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 958 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 959 | { |
ef79d9a3 YQ |
960 | regcache->raw_write_part (regnum, offset, len, buf); |
961 | } | |
123f5f96 | 962 | |
ef79d9a3 YQ |
963 | void |
964 | regcache::raw_write_part (int regnum, int offset, int len, | |
965 | const gdb_byte *buf) | |
966 | { | |
4e888c28 | 967 | assert_regnum (regnum); |
d3037ba6 | 968 | xfer_part (regnum, offset, len, NULL, buf, true); |
06c0b04e AC |
969 | } |
970 | ||
05d1431c | 971 | enum register_status |
06c0b04e | 972 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 973 | int offset, int len, gdb_byte *buf) |
06c0b04e | 974 | { |
ef79d9a3 YQ |
975 | return regcache->cooked_read_part (regnum, offset, len, buf); |
976 | } | |
123f5f96 | 977 | |
ef79d9a3 YQ |
978 | |
979 | enum register_status | |
980 | regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
981 | { | |
982 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
d3037ba6 | 983 | return xfer_part (regnum, offset, len, buf, NULL, false); |
06c0b04e AC |
984 | } |
985 | ||
986 | void | |
987 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 988 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 989 | { |
ef79d9a3 YQ |
990 | regcache->cooked_write_part (regnum, offset, len, buf); |
991 | } | |
123f5f96 | 992 | |
ef79d9a3 YQ |
993 | void |
994 | regcache::cooked_write_part (int regnum, int offset, int len, | |
995 | const gdb_byte *buf) | |
996 | { | |
997 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
d3037ba6 | 998 | xfer_part (regnum, offset, len, NULL, buf, false); |
06c0b04e | 999 | } |
32178cab | 1000 | |
a16d75cc | 1001 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1002 | |
1003 | void | |
6618125d | 1004 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
1005 | { |
1006 | gdb_assert (regcache != NULL); | |
1007 | regcache->raw_supply (regnum, buf); | |
1008 | } | |
1009 | ||
1010 | void | |
1011 | regcache::raw_supply (int regnum, const void *buf) | |
9a661b68 MK |
1012 | { |
1013 | void *regbuf; | |
1014 | size_t size; | |
1015 | ||
4e888c28 | 1016 | assert_regnum (regnum); |
ef79d9a3 | 1017 | gdb_assert (!m_readonly_p); |
9a661b68 | 1018 | |
ef79d9a3 YQ |
1019 | regbuf = register_buffer (regnum); |
1020 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1021 | |
1022 | if (buf) | |
ee99023e PA |
1023 | { |
1024 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1025 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1026 | } |
9a661b68 | 1027 | else |
ee99023e PA |
1028 | { |
1029 | /* This memset not strictly necessary, but better than garbage | |
1030 | in case the register value manages to escape somewhere (due | |
1031 | to a bug, no less). */ | |
1032 | memset (regbuf, 0, size); | |
ef79d9a3 | 1033 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1034 | } |
9a661b68 MK |
1035 | } |
1036 | ||
b057297a AH |
1037 | /* Supply register REGNUM to REGCACHE. Value to supply is an integer stored at |
1038 | address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. If | |
1039 | the register size is greater than ADDR_LEN, then the integer will be sign or | |
1040 | zero extended. If the register size is smaller than the integer, then the | |
1041 | most significant bytes of the integer will be truncated. */ | |
1042 | ||
1043 | void | |
1044 | regcache::raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len, | |
1045 | bool is_signed) | |
1046 | { | |
1047 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1048 | gdb_byte *regbuf; | |
1049 | size_t regsize; | |
1050 | ||
4e888c28 | 1051 | assert_regnum (regnum); |
b057297a AH |
1052 | gdb_assert (!m_readonly_p); |
1053 | ||
1054 | regbuf = register_buffer (regnum); | |
1055 | regsize = m_descr->sizeof_register[regnum]; | |
1056 | ||
1057 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1058 | byte_order); | |
1059 | m_register_status[regnum] = REG_VALID; | |
1060 | } | |
1061 | ||
f81fdd35 AH |
1062 | /* Supply register REGNUM with zeroed value to REGCACHE. This is not the same |
1063 | as calling raw_supply with NULL (which will set the state to | |
1064 | unavailable). */ | |
1065 | ||
1066 | void | |
1067 | regcache::raw_supply_zeroed (int regnum) | |
1068 | { | |
1069 | void *regbuf; | |
1070 | size_t size; | |
1071 | ||
4e888c28 | 1072 | assert_regnum (regnum); |
f81fdd35 AH |
1073 | gdb_assert (!m_readonly_p); |
1074 | ||
1075 | regbuf = register_buffer (regnum); | |
1076 | size = m_descr->sizeof_register[regnum]; | |
1077 | ||
1078 | memset (regbuf, 0, size); | |
1079 | m_register_status[regnum] = REG_VALID; | |
1080 | } | |
1081 | ||
9a661b68 MK |
1082 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ |
1083 | ||
1084 | void | |
6618125d | 1085 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1086 | { |
1087 | gdb_assert (regcache != NULL && buf != NULL); | |
1088 | regcache->raw_collect (regnum, buf); | |
1089 | } | |
1090 | ||
1091 | void | |
1092 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1093 | { |
1094 | const void *regbuf; | |
1095 | size_t size; | |
1096 | ||
ef79d9a3 | 1097 | gdb_assert (buf != NULL); |
4e888c28 | 1098 | assert_regnum (regnum); |
9a661b68 | 1099 | |
ef79d9a3 YQ |
1100 | regbuf = register_buffer (regnum); |
1101 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1102 | memcpy (buf, regbuf, size); |
1103 | } | |
1104 | ||
0b309272 AA |
1105 | /* Transfer a single or all registers belonging to a certain register |
1106 | set to or from a buffer. This is the main worker function for | |
1107 | regcache_supply_regset and regcache_collect_regset. */ | |
1108 | ||
b057297a AH |
1109 | /* Collect register REGNUM from REGCACHE. Store collected value as an integer |
1110 | at address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. | |
1111 | If ADDR_LEN is greater than the register size, then the integer will be sign | |
1112 | or zero extended. If ADDR_LEN is smaller than the register size, then the | |
1113 | most significant bytes of the integer will be truncated. */ | |
1114 | ||
1115 | void | |
1116 | regcache::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, | |
1117 | bool is_signed) const | |
1118 | { | |
1119 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1120 | const gdb_byte *regbuf; | |
1121 | size_t regsize; | |
1122 | ||
4e888c28 | 1123 | assert_regnum (regnum); |
b057297a AH |
1124 | |
1125 | regbuf = register_buffer (regnum); | |
1126 | regsize = m_descr->sizeof_register[regnum]; | |
1127 | ||
1128 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1129 | byte_order); | |
1130 | } | |
1131 | ||
ef79d9a3 YQ |
1132 | void |
1133 | regcache::transfer_regset (const struct regset *regset, | |
1134 | struct regcache *out_regcache, | |
1135 | int regnum, const void *in_buf, | |
1136 | void *out_buf, size_t size) const | |
0b309272 AA |
1137 | { |
1138 | const struct regcache_map_entry *map; | |
1139 | int offs = 0, count; | |
1140 | ||
19ba03f4 SM |
1141 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1142 | (count = map->count) != 0; | |
1143 | map++) | |
0b309272 AA |
1144 | { |
1145 | int regno = map->regno; | |
1146 | int slot_size = map->size; | |
1147 | ||
1148 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1149 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1150 | |
1151 | if (regno == REGCACHE_MAP_SKIP | |
1152 | || (regnum != -1 | |
1153 | && (regnum < regno || regnum >= regno + count))) | |
1154 | offs += count * slot_size; | |
1155 | ||
1156 | else if (regnum == -1) | |
1157 | for (; count--; regno++, offs += slot_size) | |
1158 | { | |
1159 | if (offs + slot_size > size) | |
1160 | break; | |
1161 | ||
1162 | if (out_buf) | |
ef79d9a3 | 1163 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1164 | else |
ef79d9a3 YQ |
1165 | out_regcache->raw_supply (regno, in_buf |
1166 | ? (const gdb_byte *) in_buf + offs | |
1167 | : NULL); | |
0b309272 AA |
1168 | } |
1169 | else | |
1170 | { | |
1171 | /* Transfer a single register and return. */ | |
1172 | offs += (regnum - regno) * slot_size; | |
1173 | if (offs + slot_size > size) | |
1174 | return; | |
1175 | ||
1176 | if (out_buf) | |
ef79d9a3 | 1177 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1178 | else |
ef79d9a3 YQ |
1179 | out_regcache->raw_supply (regnum, in_buf |
1180 | ? (const gdb_byte *) in_buf + offs | |
1181 | : NULL); | |
0b309272 AA |
1182 | return; |
1183 | } | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1188 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1189 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1190 | ||
1191 | void | |
1192 | regcache_supply_regset (const struct regset *regset, | |
1193 | struct regcache *regcache, | |
1194 | int regnum, const void *buf, size_t size) | |
1195 | { | |
ef79d9a3 YQ |
1196 | regcache->supply_regset (regset, regnum, buf, size); |
1197 | } | |
1198 | ||
1199 | void | |
1200 | regcache::supply_regset (const struct regset *regset, | |
1201 | int regnum, const void *buf, size_t size) | |
1202 | { | |
1203 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1204 | } |
1205 | ||
1206 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1207 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1208 | REGSET. */ | |
1209 | ||
1210 | void | |
1211 | regcache_collect_regset (const struct regset *regset, | |
1212 | const struct regcache *regcache, | |
1213 | int regnum, void *buf, size_t size) | |
1214 | { | |
ef79d9a3 YQ |
1215 | regcache->collect_regset (regset, regnum, buf, size); |
1216 | } | |
1217 | ||
1218 | void | |
1219 | regcache::collect_regset (const struct regset *regset, | |
1220 | int regnum, void *buf, size_t size) const | |
1221 | { | |
1222 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1223 | } |
1224 | ||
193cb69f | 1225 | |
515630c5 | 1226 | /* Special handling for register PC. */ |
32178cab MS |
1227 | |
1228 | CORE_ADDR | |
515630c5 | 1229 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1230 | { |
ac7936df | 1231 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1232 | |
32178cab MS |
1233 | CORE_ADDR pc_val; |
1234 | ||
61a1198a UW |
1235 | if (gdbarch_read_pc_p (gdbarch)) |
1236 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1237 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1238 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1239 | { |
61a1198a | 1240 | ULONGEST raw_val; |
123f5f96 | 1241 | |
05d1431c PA |
1242 | if (regcache_cooked_read_unsigned (regcache, |
1243 | gdbarch_pc_regnum (gdbarch), | |
1244 | &raw_val) == REG_UNAVAILABLE) | |
1245 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1246 | ||
214e098a | 1247 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1248 | } |
1249 | else | |
515630c5 UW |
1250 | internal_error (__FILE__, __LINE__, |
1251 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1252 | return pc_val; |
1253 | } | |
1254 | ||
32178cab | 1255 | void |
515630c5 | 1256 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1257 | { |
ac7936df | 1258 | struct gdbarch *gdbarch = regcache->arch (); |
61a1198a | 1259 | |
61a1198a UW |
1260 | if (gdbarch_write_pc_p (gdbarch)) |
1261 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1262 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1263 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1264 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1265 | else |
1266 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1267 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1268 | |
1269 | /* Writing the PC (for instance, from "load") invalidates the | |
1270 | current frame. */ | |
1271 | reinit_frame_cache (); | |
32178cab MS |
1272 | } |
1273 | ||
d999647b YQ |
1274 | int |
1275 | regcache::num_raw_registers () const | |
1276 | { | |
1277 | return gdbarch_num_regs (arch ()); | |
1278 | } | |
1279 | ||
ed771251 | 1280 | void |
ef79d9a3 | 1281 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1282 | { |
ef79d9a3 | 1283 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1284 | |
1285 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1286 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1287 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1288 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1289 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1290 | gdbarch_register_name (gdbarch, regno)); | |
1291 | else | |
1292 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1293 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1294 | { | |
1295 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1296 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1297 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1298 | |
1299 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1300 | for (int i = 0; i < size; i++) | |
1301 | { | |
1302 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1303 | } | |
1304 | if (size <= sizeof (LONGEST)) | |
1305 | { | |
1306 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1307 | ||
1308 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1309 | core_addr_to_string_nz (val), plongest (val)); | |
1310 | } | |
1311 | } | |
1312 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1313 | } | |
32178cab | 1314 | |
705152c5 | 1315 | static void |
0b39b52e | 1316 | reg_flush_command (const char *command, int from_tty) |
705152c5 MS |
1317 | { |
1318 | /* Force-flush the register cache. */ | |
1319 | registers_changed (); | |
1320 | if (from_tty) | |
a3f17187 | 1321 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1322 | } |
1323 | ||
ef79d9a3 YQ |
1324 | void |
1325 | regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump) | |
af030b9a | 1326 | { |
ef79d9a3 | 1327 | struct gdbarch *gdbarch = m_descr->gdbarch; |
af030b9a AC |
1328 | int regnum; |
1329 | int footnote_nr = 0; | |
af030b9a AC |
1330 | int footnote_register_offset = 0; |
1331 | int footnote_register_type_name_null = 0; | |
1332 | long register_offset = 0; | |
af030b9a | 1333 | |
ef79d9a3 | 1334 | gdb_assert (m_descr->nr_cooked_registers |
214e098a UW |
1335 | == (gdbarch_num_regs (gdbarch) |
1336 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a | 1337 | |
ef79d9a3 | 1338 | for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++) |
af030b9a AC |
1339 | { |
1340 | /* Name. */ | |
1341 | if (regnum < 0) | |
1342 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1343 | else | |
1344 | { | |
214e098a | 1345 | const char *p = gdbarch_register_name (gdbarch, regnum); |
123f5f96 | 1346 | |
af030b9a AC |
1347 | if (p == NULL) |
1348 | p = ""; | |
1349 | else if (p[0] == '\0') | |
1350 | p = "''"; | |
1351 | fprintf_unfiltered (file, " %-10s", p); | |
1352 | } | |
1353 | ||
1354 | /* Number. */ | |
1355 | if (regnum < 0) | |
1356 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1357 | else | |
1358 | fprintf_unfiltered (file, " %4d", regnum); | |
1359 | ||
1360 | /* Relative number. */ | |
1361 | if (regnum < 0) | |
1362 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 1363 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
1364 | fprintf_unfiltered (file, " %4d", regnum); |
1365 | else | |
f57d151a | 1366 | fprintf_unfiltered (file, " %4d", |
214e098a | 1367 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
1368 | |
1369 | /* Offset. */ | |
1370 | if (regnum < 0) | |
1371 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1372 | else | |
1373 | { | |
1374 | fprintf_unfiltered (file, " %6ld", | |
ef79d9a3 YQ |
1375 | m_descr->register_offset[regnum]); |
1376 | if (register_offset != m_descr->register_offset[regnum] | |
d3b22ed5 | 1377 | || (regnum > 0 |
ef79d9a3 YQ |
1378 | && (m_descr->register_offset[regnum] |
1379 | != (m_descr->register_offset[regnum - 1] | |
1380 | + m_descr->sizeof_register[regnum - 1]))) | |
d3b22ed5 | 1381 | ) |
af030b9a AC |
1382 | { |
1383 | if (!footnote_register_offset) | |
1384 | footnote_register_offset = ++footnote_nr; | |
1385 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1386 | } | |
1387 | else | |
1388 | fprintf_unfiltered (file, " "); | |
ef79d9a3 YQ |
1389 | register_offset = (m_descr->register_offset[regnum] |
1390 | + m_descr->sizeof_register[regnum]); | |
af030b9a AC |
1391 | } |
1392 | ||
1393 | /* Size. */ | |
1394 | if (regnum < 0) | |
1395 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1396 | else | |
ef79d9a3 | 1397 | fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]); |
af030b9a AC |
1398 | |
1399 | /* Type. */ | |
b59ff9d5 AC |
1400 | { |
1401 | const char *t; | |
6c3e20f1 | 1402 | std::string name_holder; |
123f5f96 | 1403 | |
b59ff9d5 AC |
1404 | if (regnum < 0) |
1405 | t = "Type"; | |
1406 | else | |
1407 | { | |
1408 | static const char blt[] = "builtin_type"; | |
123f5f96 | 1409 | |
ef79d9a3 | 1410 | t = TYPE_NAME (register_type (arch (), regnum)); |
b59ff9d5 AC |
1411 | if (t == NULL) |
1412 | { | |
b59ff9d5 AC |
1413 | if (!footnote_register_type_name_null) |
1414 | footnote_register_type_name_null = ++footnote_nr; | |
6c3e20f1 TT |
1415 | name_holder = string_printf ("*%d", |
1416 | footnote_register_type_name_null); | |
1417 | t = name_holder.c_str (); | |
b59ff9d5 AC |
1418 | } |
1419 | /* Chop a leading builtin_type. */ | |
61012eef | 1420 | if (startswith (t, blt)) |
b59ff9d5 AC |
1421 | t += strlen (blt); |
1422 | } | |
1423 | fprintf_unfiltered (file, " %-15s", t); | |
1424 | } | |
1425 | ||
1426 | /* Leading space always present. */ | |
1427 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1428 | |
1429 | /* Value, raw. */ | |
1430 | if (what_to_dump == regcache_dump_raw) | |
1431 | { | |
1432 | if (regnum < 0) | |
1433 | fprintf_unfiltered (file, "Raw value"); | |
d999647b | 1434 | else if (regnum >= num_raw_registers ()) |
af030b9a | 1435 | fprintf_unfiltered (file, "<cooked>"); |
ef79d9a3 | 1436 | else if (get_register_status (regnum) == REG_UNKNOWN) |
af030b9a | 1437 | fprintf_unfiltered (file, "<invalid>"); |
ef79d9a3 | 1438 | else if (get_register_status (regnum) == REG_UNAVAILABLE) |
ee99023e | 1439 | fprintf_unfiltered (file, "<unavailable>"); |
af030b9a AC |
1440 | else |
1441 | { | |
50d6adef AH |
1442 | raw_update (regnum); |
1443 | print_hex_chars (file, register_buffer (regnum), | |
ef79d9a3 | 1444 | m_descr->sizeof_register[regnum], |
30a25466 | 1445 | gdbarch_byte_order (gdbarch), true); |
af030b9a AC |
1446 | } |
1447 | } | |
1448 | ||
1449 | /* Value, cooked. */ | |
1450 | if (what_to_dump == regcache_dump_cooked) | |
1451 | { | |
1452 | if (regnum < 0) | |
1453 | fprintf_unfiltered (file, "Cooked value"); | |
1454 | else | |
1455 | { | |
50d6adef | 1456 | const gdb_byte *buf = NULL; |
05d1431c | 1457 | enum register_status status; |
50d6adef AH |
1458 | struct value *value = NULL; |
1459 | ||
d999647b | 1460 | if (regnum < num_raw_registers ()) |
50d6adef AH |
1461 | { |
1462 | raw_update (regnum); | |
1463 | status = get_register_status (regnum); | |
1464 | buf = register_buffer (regnum); | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | value = cooked_read_value (regnum); | |
1469 | ||
1470 | if (!value_optimized_out (value) | |
1471 | && value_entirely_available (value)) | |
1472 | { | |
1473 | status = REG_VALID; | |
1474 | buf = value_contents_all (value); | |
1475 | } | |
1476 | else | |
1477 | status = REG_UNAVAILABLE; | |
1478 | } | |
05d1431c | 1479 | |
05d1431c PA |
1480 | if (status == REG_UNKNOWN) |
1481 | fprintf_unfiltered (file, "<invalid>"); | |
1482 | else if (status == REG_UNAVAILABLE) | |
1483 | fprintf_unfiltered (file, "<unavailable>"); | |
1484 | else | |
d3eaaf66 | 1485 | print_hex_chars (file, buf, |
ef79d9a3 | 1486 | m_descr->sizeof_register[regnum], |
30a25466 | 1487 | gdbarch_byte_order (gdbarch), true); |
50d6adef AH |
1488 | |
1489 | if (value != NULL) | |
1490 | { | |
1491 | release_value (value); | |
1492 | value_free (value); | |
1493 | } | |
af030b9a AC |
1494 | } |
1495 | } | |
1496 | ||
b59ff9d5 AC |
1497 | /* Group members. */ |
1498 | if (what_to_dump == regcache_dump_groups) | |
1499 | { | |
1500 | if (regnum < 0) | |
1501 | fprintf_unfiltered (file, "Groups"); | |
1502 | else | |
1503 | { | |
b59ff9d5 | 1504 | const char *sep = ""; |
6c7d17ba | 1505 | struct reggroup *group; |
123f5f96 | 1506 | |
6c7d17ba AC |
1507 | for (group = reggroup_next (gdbarch, NULL); |
1508 | group != NULL; | |
1509 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1510 | { |
6c7d17ba | 1511 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1512 | { |
3e43a32a MS |
1513 | fprintf_unfiltered (file, |
1514 | "%s%s", sep, reggroup_name (group)); | |
b59ff9d5 AC |
1515 | sep = ","; |
1516 | } | |
1517 | } | |
1518 | } | |
1519 | } | |
1520 | ||
c21236dc PA |
1521 | /* Remote packet configuration. */ |
1522 | if (what_to_dump == regcache_dump_remote) | |
1523 | { | |
1524 | if (regnum < 0) | |
1525 | { | |
1526 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1527 | } | |
d999647b | 1528 | else if (regnum < num_raw_registers ()) |
c21236dc PA |
1529 | { |
1530 | int pnum, poffset; | |
1531 | ||
ef79d9a3 | 1532 | if (remote_register_number_and_offset (arch (), regnum, |
c21236dc PA |
1533 | &pnum, &poffset)) |
1534 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1535 | } | |
1536 | } | |
1537 | ||
af030b9a AC |
1538 | fprintf_unfiltered (file, "\n"); |
1539 | } | |
1540 | ||
af030b9a AC |
1541 | if (footnote_register_offset) |
1542 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1543 | footnote_register_offset); | |
1544 | if (footnote_register_type_name_null) | |
1545 | fprintf_unfiltered (file, | |
1546 | "*%d: Register type's name NULL.\n", | |
1547 | footnote_register_type_name_null); | |
af030b9a AC |
1548 | } |
1549 | ||
1550 | static void | |
4e001312 | 1551 | regcache_print (const char *args, enum regcache_dump_what what_to_dump) |
af030b9a | 1552 | { |
ed4227b7 PA |
1553 | /* Where to send output. */ |
1554 | stdio_file file; | |
1555 | ui_file *out; | |
1556 | ||
af030b9a | 1557 | if (args == NULL) |
ed4227b7 | 1558 | out = gdb_stdout; |
af030b9a AC |
1559 | else |
1560 | { | |
d7e74731 | 1561 | if (!file.open (args, "w")) |
e2e0b3e5 | 1562 | perror_with_name (_("maintenance print architecture")); |
ed4227b7 PA |
1563 | out = &file; |
1564 | } | |
1565 | ||
1566 | if (target_has_registers) | |
1567 | get_current_regcache ()->dump (out, what_to_dump); | |
1568 | else | |
1569 | { | |
1570 | /* For the benefit of "maint print registers" & co when | |
1571 | debugging an executable, allow dumping a regcache even when | |
1572 | there is no thread selected / no registers. */ | |
f26ae15b | 1573 | regcache dummy_regs (target_gdbarch ()); |
ed4227b7 | 1574 | dummy_regs.dump (out, what_to_dump); |
af030b9a AC |
1575 | } |
1576 | } | |
1577 | ||
1578 | static void | |
4e001312 | 1579 | maintenance_print_registers (const char *args, int from_tty) |
af030b9a AC |
1580 | { |
1581 | regcache_print (args, regcache_dump_none); | |
1582 | } | |
1583 | ||
1584 | static void | |
4e001312 | 1585 | maintenance_print_raw_registers (const char *args, int from_tty) |
af030b9a AC |
1586 | { |
1587 | regcache_print (args, regcache_dump_raw); | |
1588 | } | |
1589 | ||
1590 | static void | |
4e001312 | 1591 | maintenance_print_cooked_registers (const char *args, int from_tty) |
af030b9a AC |
1592 | { |
1593 | regcache_print (args, regcache_dump_cooked); | |
1594 | } | |
1595 | ||
b59ff9d5 | 1596 | static void |
4e001312 | 1597 | maintenance_print_register_groups (const char *args, int from_tty) |
b59ff9d5 AC |
1598 | { |
1599 | regcache_print (args, regcache_dump_groups); | |
1600 | } | |
1601 | ||
c21236dc | 1602 | static void |
4e001312 | 1603 | maintenance_print_remote_registers (const char *args, int from_tty) |
c21236dc PA |
1604 | { |
1605 | regcache_print (args, regcache_dump_remote); | |
1606 | } | |
1607 | ||
8248946c YQ |
1608 | #if GDB_SELF_TEST |
1609 | #include "selftest.h" | |
1b30aaa5 YQ |
1610 | #include "selftest-arch.h" |
1611 | #include "gdbthread.h" | |
8248946c YQ |
1612 | |
1613 | namespace selftests { | |
1614 | ||
e521e87e | 1615 | class regcache_access : public regcache |
8248946c | 1616 | { |
e521e87e YQ |
1617 | public: |
1618 | ||
1619 | /* Return the number of elements in current_regcache. */ | |
1620 | ||
1621 | static size_t | |
1622 | current_regcache_size () | |
1623 | { | |
1624 | return std::distance (regcache::current_regcache.begin (), | |
1625 | regcache::current_regcache.end ()); | |
1626 | } | |
1627 | }; | |
8248946c YQ |
1628 | |
1629 | static void | |
1630 | current_regcache_test (void) | |
1631 | { | |
1632 | /* It is empty at the start. */ | |
e521e87e | 1633 | SELF_CHECK (regcache_access::current_regcache_size () == 0); |
8248946c YQ |
1634 | |
1635 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1636 | ||
1637 | /* Get regcache from ptid1, a new regcache is added to | |
1638 | current_regcache. */ | |
1639 | regcache *regcache = get_thread_arch_aspace_regcache (ptid1, | |
1640 | target_gdbarch (), | |
1641 | NULL); | |
1642 | ||
1643 | SELF_CHECK (regcache != NULL); | |
1644 | SELF_CHECK (regcache->ptid () == ptid1); | |
e521e87e | 1645 | SELF_CHECK (regcache_access::current_regcache_size () == 1); |
8248946c YQ |
1646 | |
1647 | /* Get regcache from ptid2, a new regcache is added to | |
1648 | current_regcache. */ | |
1649 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1650 | target_gdbarch (), | |
1651 | NULL); | |
1652 | SELF_CHECK (regcache != NULL); | |
1653 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1654 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1655 | |
1656 | /* Get regcache from ptid3, a new regcache is added to | |
1657 | current_regcache. */ | |
1658 | regcache = get_thread_arch_aspace_regcache (ptid3, | |
1659 | target_gdbarch (), | |
1660 | NULL); | |
1661 | SELF_CHECK (regcache != NULL); | |
1662 | SELF_CHECK (regcache->ptid () == ptid3); | |
e521e87e | 1663 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1664 | |
1665 | /* Get regcache from ptid2 again, nothing is added to | |
1666 | current_regcache. */ | |
1667 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1668 | target_gdbarch (), | |
1669 | NULL); | |
1670 | SELF_CHECK (regcache != NULL); | |
1671 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1672 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1673 | |
1674 | /* Mark ptid2 is changed, so regcache of ptid2 should be removed from | |
1675 | current_regcache. */ | |
1676 | registers_changed_ptid (ptid2); | |
e521e87e | 1677 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1678 | } |
1679 | ||
1b30aaa5 YQ |
1680 | static void test_target_fetch_registers (target_ops *self, regcache *regs, |
1681 | int regno); | |
1682 | static void test_target_store_registers (target_ops *self, regcache *regs, | |
1683 | int regno); | |
1684 | static enum target_xfer_status | |
1685 | test_target_xfer_partial (struct target_ops *ops, | |
1686 | enum target_object object, | |
1687 | const char *annex, gdb_byte *readbuf, | |
1688 | const gdb_byte *writebuf, | |
1689 | ULONGEST offset, ULONGEST len, | |
1690 | ULONGEST *xfered_len); | |
1691 | ||
1692 | class target_ops_no_register : public test_target_ops | |
1693 | { | |
1694 | public: | |
1695 | target_ops_no_register () | |
1696 | : test_target_ops {} | |
1697 | { | |
1698 | to_fetch_registers = test_target_fetch_registers; | |
1699 | to_store_registers = test_target_store_registers; | |
1700 | to_xfer_partial = test_target_xfer_partial; | |
1701 | ||
1702 | to_data = this; | |
1703 | } | |
1704 | ||
1705 | void reset () | |
1706 | { | |
1707 | fetch_registers_called = 0; | |
1708 | store_registers_called = 0; | |
1709 | xfer_partial_called = 0; | |
1710 | } | |
1711 | ||
1712 | unsigned int fetch_registers_called = 0; | |
1713 | unsigned int store_registers_called = 0; | |
1714 | unsigned int xfer_partial_called = 0; | |
1715 | }; | |
1716 | ||
1717 | static void | |
1718 | test_target_fetch_registers (target_ops *self, regcache *regs, int regno) | |
1719 | { | |
1720 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1721 | ||
1722 | /* Mark register available. */ | |
1723 | regs->raw_supply_zeroed (regno); | |
1724 | ops->fetch_registers_called++; | |
1725 | } | |
1726 | ||
1727 | static void | |
1728 | test_target_store_registers (target_ops *self, regcache *regs, int regno) | |
1729 | { | |
1730 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1731 | ||
1732 | ops->store_registers_called++; | |
1733 | } | |
1734 | ||
1735 | static enum target_xfer_status | |
1736 | test_target_xfer_partial (struct target_ops *self, enum target_object object, | |
1737 | const char *annex, gdb_byte *readbuf, | |
1738 | const gdb_byte *writebuf, | |
1739 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
1740 | { | |
1741 | auto ops = static_cast<target_ops_no_register *> (self->to_data); | |
1742 | ||
1743 | ops->xfer_partial_called++; | |
1744 | ||
1745 | *xfered_len = len; | |
1746 | return TARGET_XFER_OK; | |
1747 | } | |
1748 | ||
1749 | class readwrite_regcache : public regcache | |
1750 | { | |
1751 | public: | |
1752 | readwrite_regcache (struct gdbarch *gdbarch) | |
1753 | : regcache (gdbarch, nullptr, false) | |
1754 | {} | |
1755 | }; | |
1756 | ||
1757 | /* Test regcache::cooked_read gets registers from raw registers and | |
1758 | memory instead of target to_{fetch,store}_registers. */ | |
1759 | ||
1760 | static void | |
1761 | cooked_read_test (struct gdbarch *gdbarch) | |
1762 | { | |
1763 | /* Error out if debugging something, because we're going to push the | |
1764 | test target, which would pop any existing target. */ | |
1765 | if (current_target.to_stratum >= process_stratum) | |
1766 | error (_("target already pushed")); | |
1767 | ||
1768 | /* Create a mock environment. An inferior with a thread, with a | |
1769 | process_stratum target pushed. */ | |
1770 | ||
1771 | target_ops_no_register mock_target; | |
1772 | ptid_t mock_ptid (1, 1); | |
1773 | inferior mock_inferior (mock_ptid.pid ()); | |
1774 | address_space mock_aspace {}; | |
1775 | mock_inferior.gdbarch = gdbarch; | |
1776 | mock_inferior.aspace = &mock_aspace; | |
1777 | thread_info mock_thread (&mock_inferior, mock_ptid); | |
1778 | ||
1779 | scoped_restore restore_thread_list | |
1780 | = make_scoped_restore (&thread_list, &mock_thread); | |
1781 | ||
1782 | /* Add the mock inferior to the inferior list so that look ups by | |
1783 | target+ptid can find it. */ | |
1784 | scoped_restore restore_inferior_list | |
1785 | = make_scoped_restore (&inferior_list); | |
1786 | inferior_list = &mock_inferior; | |
1787 | ||
1788 | /* Switch to the mock inferior. */ | |
1789 | scoped_restore_current_inferior restore_current_inferior; | |
1790 | set_current_inferior (&mock_inferior); | |
1791 | ||
1792 | /* Push the process_stratum target so we can mock accessing | |
1793 | registers. */ | |
1794 | push_target (&mock_target); | |
1795 | ||
1796 | /* Pop it again on exit (return/exception). */ | |
1797 | struct on_exit | |
1798 | { | |
1799 | ~on_exit () | |
1800 | { | |
1801 | pop_all_targets_at_and_above (process_stratum); | |
1802 | } | |
1803 | } pop_targets; | |
1804 | ||
1805 | /* Switch to the mock thread. */ | |
1806 | scoped_restore restore_inferior_ptid | |
1807 | = make_scoped_restore (&inferior_ptid, mock_ptid); | |
1808 | ||
1809 | /* Test that read one raw register from regcache_no_target will go | |
1810 | to the target layer. */ | |
1811 | int regnum; | |
1812 | ||
1813 | /* Find a raw register which size isn't zero. */ | |
1814 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) | |
1815 | { | |
1816 | if (register_size (gdbarch, regnum) != 0) | |
1817 | break; | |
1818 | } | |
1819 | ||
1820 | readwrite_regcache readwrite (gdbarch); | |
1821 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1822 | ||
1823 | readwrite.raw_read (regnum, buf.data ()); | |
1824 | ||
1825 | /* raw_read calls target_fetch_registers. */ | |
1826 | SELF_CHECK (mock_target.fetch_registers_called > 0); | |
1827 | mock_target.reset (); | |
1828 | ||
1829 | /* Mark all raw registers valid, so the following raw registers | |
1830 | accesses won't go to target. */ | |
1831 | for (auto i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
1832 | readwrite.raw_update (i); | |
1833 | ||
1834 | mock_target.reset (); | |
1835 | /* Then, read all raw and pseudo registers, and don't expect calling | |
1836 | to_{fetch,store}_registers. */ | |
1837 | for (int regnum = 0; | |
1838 | regnum < gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
1839 | regnum++) | |
1840 | { | |
1841 | if (register_size (gdbarch, regnum) == 0) | |
1842 | continue; | |
1843 | ||
1844 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1845 | ||
1846 | SELF_CHECK (REG_VALID == readwrite.cooked_read (regnum, buf.data ())); | |
1847 | ||
dc711524 YQ |
1848 | SELF_CHECK (mock_target.fetch_registers_called == 0); |
1849 | SELF_CHECK (mock_target.store_registers_called == 0); | |
1b30aaa5 YQ |
1850 | |
1851 | /* Some SPU pseudo registers are got via TARGET_OBJECT_SPU. */ | |
1852 | if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu) | |
1853 | SELF_CHECK (mock_target.xfer_partial_called == 0); | |
1854 | ||
1855 | mock_target.reset (); | |
1856 | } | |
a63f2d2f YQ |
1857 | |
1858 | regcache readonly (regcache::readonly, readwrite); | |
1859 | ||
1860 | /* GDB may go to target layer to fetch all registers and memory for | |
1861 | readonly regcache. */ | |
1862 | mock_target.reset (); | |
1863 | ||
1864 | for (int regnum = 0; | |
1865 | regnum < gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
1866 | regnum++) | |
1867 | { | |
a63f2d2f YQ |
1868 | if (register_size (gdbarch, regnum) == 0) |
1869 | continue; | |
1870 | ||
1871 | gdb::def_vector<gdb_byte> buf (register_size (gdbarch, regnum)); | |
1872 | enum register_status status = readonly.cooked_read (regnum, | |
1873 | buf.data ()); | |
1874 | ||
1875 | if (regnum < gdbarch_num_regs (gdbarch)) | |
1876 | { | |
1877 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1878 | ||
1879 | if (bfd_arch == bfd_arch_frv || bfd_arch == bfd_arch_h8300 | |
1880 | || bfd_arch == bfd_arch_m32c || bfd_arch == bfd_arch_sh | |
1881 | || bfd_arch == bfd_arch_alpha || bfd_arch == bfd_arch_v850 | |
1882 | || bfd_arch == bfd_arch_msp430 || bfd_arch == bfd_arch_mep | |
1883 | || bfd_arch == bfd_arch_mips || bfd_arch == bfd_arch_v850_rh850 | |
1884 | || bfd_arch == bfd_arch_tic6x || bfd_arch == bfd_arch_mn10300 | |
1885 | || bfd_arch == bfd_arch_rl78 || bfd_arch == bfd_arch_score) | |
1886 | { | |
1887 | /* Raw registers. If raw registers are not in save_reggroup, | |
1888 | their status are unknown. */ | |
1889 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1890 | SELF_CHECK (status == REG_VALID); | |
1891 | else | |
1892 | SELF_CHECK (status == REG_UNKNOWN); | |
1893 | } | |
1894 | else | |
1895 | SELF_CHECK (status == REG_VALID); | |
1896 | } | |
1897 | else | |
1898 | { | |
1899 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
1900 | SELF_CHECK (status == REG_VALID); | |
1901 | else | |
1902 | { | |
1903 | /* If pseudo registers are not in save_reggroup, some of | |
1904 | them can be computed from saved raw registers, but some | |
1905 | of them are unknown. */ | |
1906 | auto bfd_arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
1907 | ||
1908 | if (bfd_arch == bfd_arch_frv | |
1909 | || bfd_arch == bfd_arch_m32c | |
1910 | || bfd_arch == bfd_arch_mep | |
1911 | || bfd_arch == bfd_arch_sh) | |
1912 | SELF_CHECK (status == REG_VALID || status == REG_UNKNOWN); | |
1913 | else if (bfd_arch == bfd_arch_mips | |
1914 | || bfd_arch == bfd_arch_h8300) | |
1915 | SELF_CHECK (status == REG_UNKNOWN); | |
1916 | else | |
1917 | SELF_CHECK (status == REG_VALID); | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | SELF_CHECK (mock_target.fetch_registers_called == 0); | |
1922 | SELF_CHECK (mock_target.store_registers_called == 0); | |
1923 | SELF_CHECK (mock_target.xfer_partial_called == 0); | |
1924 | ||
1925 | mock_target.reset (); | |
1926 | } | |
1b30aaa5 YQ |
1927 | } |
1928 | ||
8248946c YQ |
1929 | } // namespace selftests |
1930 | #endif /* GDB_SELF_TEST */ | |
1931 | ||
32178cab MS |
1932 | void |
1933 | _initialize_regcache (void) | |
1934 | { | |
3e43a32a MS |
1935 | regcache_descr_handle |
1936 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1937 | |
f4c5303c | 1938 | observer_attach_target_changed (regcache_observer_target_changed); |
e521e87e | 1939 | observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed); |
f4c5303c | 1940 | |
705152c5 | 1941 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1942 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1943 | |
3e43a32a MS |
1944 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
1945 | _("Print the internal register configuration.\n" | |
1946 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1947 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
1948 | maintenance_print_raw_registers, |
1949 | _("Print the internal register configuration " | |
1950 | "including raw values.\n" | |
1951 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1952 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
1953 | maintenance_print_cooked_registers, |
1954 | _("Print the internal register configuration " | |
1955 | "including cooked values.\n" | |
1956 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1957 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
1958 | maintenance_print_register_groups, |
1959 | _("Print the internal register configuration " | |
1960 | "including each register's group.\n" | |
1961 | "Takes an optional file parameter."), | |
af030b9a | 1962 | &maintenanceprintlist); |
c21236dc PA |
1963 | add_cmd ("remote-registers", class_maintenance, |
1964 | maintenance_print_remote_registers, _("\ | |
1965 | Print the internal register configuration including each register's\n\ | |
1966 | remote register number and buffer offset in the g/G packets.\n\ | |
1967 | Takes an optional file parameter."), | |
1968 | &maintenanceprintlist); | |
1526853e | 1969 | |
8248946c | 1970 | #if GDB_SELF_TEST |
1526853e | 1971 | selftests::register_test ("current_regcache", selftests::current_regcache_test); |
1b30aaa5 YQ |
1972 | |
1973 | selftests::register_test_foreach_arch ("regcache::cooked_read_test", | |
1974 | selftests::cooked_read_test); | |
8248946c | 1975 | #endif |
32178cab | 1976 | } |