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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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 AC |
54 | int nr_raw_registers; |
55 | long sizeof_raw_registers; | |
ee99023e | 56 | long sizeof_raw_register_status; |
3fadccb3 | 57 | |
d138e37a AC |
58 | /* The cooked register space. Each cooked register in the range |
59 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
60 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 61 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 62 | both raw registers and memory by the architecture methods |
02f60eae | 63 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 64 | int nr_cooked_registers; |
067df2e5 | 65 | long sizeof_cooked_registers; |
ee99023e | 66 | long sizeof_cooked_register_status; |
d138e37a | 67 | |
86d31898 | 68 | /* Offset and size (in 8 bit bytes), of each register in the |
d138e37a | 69 | register cache. All registers (including those in the range |
99e42fd8 PA |
70 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an |
71 | offset. */ | |
3fadccb3 | 72 | long *register_offset; |
3fadccb3 | 73 | long *sizeof_register; |
3fadccb3 | 74 | |
bb425013 AC |
75 | /* Cached table containing the type of each register. */ |
76 | struct type **register_type; | |
3fadccb3 AC |
77 | }; |
78 | ||
3fadccb3 AC |
79 | static void * |
80 | init_regcache_descr (struct gdbarch *gdbarch) | |
81 | { | |
82 | int i; | |
83 | struct regcache_descr *descr; | |
84 | gdb_assert (gdbarch != NULL); | |
85 | ||
bb425013 | 86 | /* Create an initial, zero filled, table. */ |
116f06ea | 87 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 88 | descr->gdbarch = gdbarch; |
3fadccb3 | 89 | |
d138e37a AC |
90 | /* Total size of the register space. The raw registers are mapped |
91 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 92 | either mapped onto raw-registers or memory. */ |
214e098a UW |
93 | descr->nr_cooked_registers = gdbarch_num_regs (gdbarch) |
94 | + gdbarch_num_pseudo_regs (gdbarch); | |
ee99023e PA |
95 | descr->sizeof_cooked_register_status |
96 | = gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
3fadccb3 | 97 | |
bb425013 | 98 | /* Fill in a table of register types. */ |
116f06ea | 99 | descr->register_type |
3e43a32a MS |
100 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, |
101 | struct type *); | |
bb425013 | 102 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 103 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 104 | |
bb1db049 AC |
105 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
106 | into the register cache. */ | |
214e098a | 107 | descr->nr_raw_registers = gdbarch_num_regs (gdbarch); |
ee99023e | 108 | descr->sizeof_raw_register_status = gdbarch_num_regs (gdbarch); |
bb1db049 | 109 | |
067df2e5 | 110 | /* Lay out the register cache. |
3fadccb3 | 111 | |
bb425013 AC |
112 | NOTE: cagney/2002-05-22: Only register_type() is used when |
113 | constructing the register cache. It is assumed that the | |
114 | register's raw size, virtual size and type length are all the | |
115 | same. */ | |
3fadccb3 AC |
116 | |
117 | { | |
118 | long offset = 0; | |
123f5f96 | 119 | |
116f06ea AC |
120 | descr->sizeof_register |
121 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
122 | descr->register_offset | |
123 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
99e42fd8 PA |
124 | for (i = 0; i < descr->nr_raw_registers; i++) |
125 | { | |
126 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); | |
127 | descr->register_offset[i] = offset; | |
128 | offset += descr->sizeof_register[i]; | |
129 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); | |
130 | } | |
131 | /* Set the real size of the raw register cache buffer. */ | |
132 | descr->sizeof_raw_registers = offset; | |
133 | ||
134 | for (; i < descr->nr_cooked_registers; i++) | |
3fadccb3 | 135 | { |
bb425013 | 136 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
137 | descr->register_offset[i] = offset; |
138 | offset += descr->sizeof_register[i]; | |
123a958e | 139 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 | 140 | } |
99e42fd8 | 141 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 142 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
143 | } |
144 | ||
3fadccb3 AC |
145 | return descr; |
146 | } | |
147 | ||
148 | static struct regcache_descr * | |
149 | regcache_descr (struct gdbarch *gdbarch) | |
150 | { | |
19ba03f4 SM |
151 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
152 | regcache_descr_handle); | |
3fadccb3 AC |
153 | } |
154 | ||
bb425013 AC |
155 | /* Utility functions returning useful register attributes stored in |
156 | the regcache descr. */ | |
157 | ||
158 | struct type * | |
159 | register_type (struct gdbarch *gdbarch, int regnum) | |
160 | { | |
161 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 162 | |
bb425013 AC |
163 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
164 | return descr->register_type[regnum]; | |
165 | } | |
166 | ||
0ed04cce AC |
167 | /* Utility functions returning useful register attributes stored in |
168 | the regcache descr. */ | |
169 | ||
08a617da AC |
170 | int |
171 | register_size (struct gdbarch *gdbarch, int regnum) | |
172 | { | |
173 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
174 | int size; | |
123f5f96 | 175 | |
f57d151a | 176 | gdb_assert (regnum >= 0 |
214e098a UW |
177 | && regnum < (gdbarch_num_regs (gdbarch) |
178 | + gdbarch_num_pseudo_regs (gdbarch))); | |
08a617da | 179 | size = descr->sizeof_register[regnum]; |
08a617da AC |
180 | return size; |
181 | } | |
182 | ||
8d689ee5 YQ |
183 | /* See common/common-regcache.h. */ |
184 | ||
185 | int | |
186 | regcache_register_size (const struct regcache *regcache, int n) | |
187 | { | |
188 | return register_size (get_regcache_arch (regcache), n); | |
189 | } | |
190 | ||
ef79d9a3 YQ |
191 | regcache::regcache (gdbarch *gdbarch, address_space *aspace_, |
192 | bool readonly_p_) | |
193 | : m_aspace (aspace_), m_readonly_p (readonly_p_) | |
3fadccb3 | 194 | { |
ef79d9a3 YQ |
195 | gdb_assert (gdbarch != NULL); |
196 | m_descr = regcache_descr (gdbarch); | |
4621115f | 197 | |
ef79d9a3 | 198 | if (m_readonly_p) |
4621115f | 199 | { |
ef79d9a3 YQ |
200 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers); |
201 | m_register_status = XCNEWVEC (signed char, | |
202 | m_descr->sizeof_cooked_register_status); | |
4621115f YQ |
203 | } |
204 | else | |
205 | { | |
ef79d9a3 YQ |
206 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers); |
207 | m_register_status = XCNEWVEC (signed char, | |
208 | m_descr->sizeof_raw_register_status); | |
4621115f | 209 | } |
ef79d9a3 YQ |
210 | m_ptid = minus_one_ptid; |
211 | } | |
4621115f | 212 | |
deb1fa3e YQ |
213 | static enum register_status |
214 | do_cooked_read (void *src, int regnum, gdb_byte *buf) | |
215 | { | |
216 | struct regcache *regcache = (struct regcache *) src; | |
217 | ||
218 | return regcache_cooked_read (regcache, regnum, buf); | |
219 | } | |
220 | ||
221 | regcache::regcache (readonly_t, const regcache &src) | |
222 | : regcache (src.arch (), src.aspace (), true) | |
223 | { | |
224 | gdb_assert (!src.m_readonly_p); | |
225 | save (do_cooked_read, (void *) &src); | |
226 | } | |
227 | ||
ef79d9a3 YQ |
228 | gdbarch * |
229 | regcache::arch () const | |
230 | { | |
231 | return m_descr->gdbarch; | |
232 | } | |
3fadccb3 | 233 | |
ddaaf0fb SM |
234 | /* See regcache.h. */ |
235 | ||
236 | ptid_t | |
237 | regcache_get_ptid (const struct regcache *regcache) | |
238 | { | |
ef79d9a3 | 239 | gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid)); |
ddaaf0fb | 240 | |
ef79d9a3 | 241 | return regcache->ptid (); |
ddaaf0fb SM |
242 | } |
243 | ||
b292235f | 244 | /* Cleanup class for invalidating a register. */ |
b94ade42 | 245 | |
b292235f | 246 | class regcache_invalidator |
b94ade42 | 247 | { |
b292235f | 248 | public: |
b94ade42 | 249 | |
b292235f TT |
250 | regcache_invalidator (struct regcache *regcache, int regnum) |
251 | : m_regcache (regcache), | |
252 | m_regnum (regnum) | |
253 | { | |
254 | } | |
b94ade42 | 255 | |
b292235f TT |
256 | ~regcache_invalidator () |
257 | { | |
258 | if (m_regcache != nullptr) | |
259 | regcache_invalidate (m_regcache, m_regnum); | |
260 | } | |
b94ade42 | 261 | |
b292235f | 262 | DISABLE_COPY_AND_ASSIGN (regcache_invalidator); |
b94ade42 | 263 | |
b292235f TT |
264 | void release () |
265 | { | |
266 | m_regcache = nullptr; | |
267 | } | |
268 | ||
269 | private: | |
270 | ||
271 | struct regcache *m_regcache; | |
272 | int m_regnum; | |
273 | }; | |
b94ade42 | 274 | |
41d35cb0 MK |
275 | /* Return REGCACHE's architecture. */ |
276 | ||
277 | struct gdbarch * | |
278 | get_regcache_arch (const struct regcache *regcache) | |
279 | { | |
ef79d9a3 | 280 | return regcache->arch (); |
41d35cb0 MK |
281 | } |
282 | ||
6c95b8df PA |
283 | struct address_space * |
284 | get_regcache_aspace (const struct regcache *regcache) | |
285 | { | |
ef79d9a3 | 286 | return regcache->aspace (); |
6c95b8df PA |
287 | } |
288 | ||
51b1fe4e AC |
289 | /* Return a pointer to register REGNUM's buffer cache. */ |
290 | ||
ef79d9a3 YQ |
291 | gdb_byte * |
292 | regcache::register_buffer (int regnum) const | |
51b1fe4e | 293 | { |
ef79d9a3 | 294 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
295 | } |
296 | ||
2d28509a | 297 | void |
ef79d9a3 YQ |
298 | regcache_save (struct regcache *regcache, |
299 | regcache_cooked_read_ftype *cooked_read, void *src) | |
2d28509a | 300 | { |
ef79d9a3 YQ |
301 | regcache->save (cooked_read, src); |
302 | } | |
303 | ||
304 | void | |
305 | regcache::save (regcache_cooked_read_ftype *cooked_read, | |
306 | void *src) | |
307 | { | |
308 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 309 | int regnum; |
123f5f96 | 310 | |
2d28509a | 311 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 312 | end up trying to write the register values back out to the |
2d28509a | 313 | target. */ |
ef79d9a3 | 314 | gdb_assert (m_readonly_p); |
2d28509a | 315 | /* Clear the dest. */ |
ef79d9a3 YQ |
316 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
317 | memset (m_register_status, 0, m_descr->sizeof_cooked_register_status); | |
2d28509a | 318 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
319 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
320 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 321 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 322 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
323 | { |
324 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
325 | { | |
50d6adef AH |
326 | gdb_byte *dst_buf = register_buffer (regnum); |
327 | enum register_status status = cooked_read (src, regnum, dst_buf); | |
123f5f96 | 328 | |
50d6adef AH |
329 | gdb_assert (status != REG_UNKNOWN); |
330 | ||
331 | if (status != REG_VALID) | |
332 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 333 | |
ef79d9a3 | 334 | m_register_status[regnum] = status; |
2d28509a AC |
335 | } |
336 | } | |
337 | } | |
338 | ||
ef79d9a3 YQ |
339 | void |
340 | regcache::restore (struct regcache *src) | |
2d28509a | 341 | { |
ef79d9a3 | 342 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 343 | int regnum; |
123f5f96 | 344 | |
5602984a AC |
345 | /* The dst had better not be read-only. If it is, the `restore' |
346 | doesn't make much sense. */ | |
ef79d9a3 YQ |
347 | gdb_assert (!m_readonly_p); |
348 | gdb_assert (src->m_readonly_p); | |
2d28509a | 349 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
350 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
351 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 352 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 353 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 354 | { |
5602984a | 355 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 356 | { |
ef79d9a3 YQ |
357 | if (src->m_register_status[regnum] == REG_VALID) |
358 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
359 | } |
360 | } | |
361 | } | |
362 | ||
3fadccb3 AC |
363 | void |
364 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
365 | { | |
3fadccb3 | 366 | gdb_assert (src != NULL && dst != NULL); |
ef79d9a3 | 367 | gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch); |
3fadccb3 | 368 | gdb_assert (src != dst); |
cfb7e58b | 369 | gdb_assert (src->m_readonly_p && !dst->m_readonly_p); |
6c95b8df | 370 | |
cfb7e58b | 371 | dst->restore (src); |
3fadccb3 AC |
372 | } |
373 | ||
374 | struct regcache * | |
375 | regcache_dup (struct regcache *src) | |
376 | { | |
deb1fa3e | 377 | return new regcache (regcache::readonly, *src); |
3fadccb3 AC |
378 | } |
379 | ||
39181896 | 380 | enum register_status |
ee99023e | 381 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
382 | { |
383 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
384 | return regcache->get_register_status (regnum); |
385 | } | |
386 | ||
387 | enum register_status | |
388 | regcache::get_register_status (int regnum) const | |
389 | { | |
6ed7ea50 | 390 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
391 | if (m_readonly_p) |
392 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
6ed7ea50 | 393 | else |
ef79d9a3 | 394 | gdb_assert (regnum < m_descr->nr_raw_registers); |
6ed7ea50 | 395 | |
ef79d9a3 | 396 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
397 | } |
398 | ||
9c5ea4d9 UW |
399 | void |
400 | regcache_invalidate (struct regcache *regcache, int regnum) | |
401 | { | |
402 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 403 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
404 | } |
405 | ||
ef79d9a3 YQ |
406 | void |
407 | regcache::invalidate (int regnum) | |
408 | { | |
409 | gdb_assert (regnum >= 0); | |
410 | gdb_assert (!m_readonly_p); | |
411 | gdb_assert (regnum < m_descr->nr_raw_registers); | |
412 | m_register_status[regnum] = REG_UNKNOWN; | |
413 | } | |
9c5ea4d9 | 414 | |
3fadccb3 | 415 | /* Global structure containing the current regcache. */ |
3fadccb3 | 416 | |
5ebd2499 | 417 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
418 | recording if the register values have been changed (eg. by the |
419 | user). Therefore all registers must be written back to the | |
420 | target when appropriate. */ | |
e521e87e | 421 | std::forward_list<regcache *> regcache::current_regcache; |
c2250ad1 UW |
422 | |
423 | struct regcache * | |
e2d96639 YQ |
424 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
425 | struct address_space *aspace) | |
c2250ad1 | 426 | { |
e521e87e | 427 | for (const auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
428 | if (ptid_equal (regcache->ptid (), ptid) && regcache->arch () == gdbarch) |
429 | return regcache; | |
594f7785 | 430 | |
94bb8dfe | 431 | regcache *new_regcache = new regcache (gdbarch, aspace, false); |
594f7785 | 432 | |
e521e87e | 433 | regcache::current_regcache.push_front (new_regcache); |
ef79d9a3 | 434 | new_regcache->set_ptid (ptid); |
e2d96639 | 435 | |
e2d96639 YQ |
436 | return new_regcache; |
437 | } | |
438 | ||
439 | struct regcache * | |
440 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
441 | { | |
ed4227b7 | 442 | address_space *aspace = target_thread_address_space (ptid); |
b78974c3 | 443 | |
e2d96639 | 444 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
445 | } |
446 | ||
c2250ad1 UW |
447 | static ptid_t current_thread_ptid; |
448 | static struct gdbarch *current_thread_arch; | |
449 | ||
450 | struct regcache * | |
451 | get_thread_regcache (ptid_t ptid) | |
452 | { | |
453 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
454 | { | |
455 | current_thread_ptid = ptid; | |
456 | current_thread_arch = target_thread_architecture (ptid); | |
457 | } | |
458 | ||
459 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
460 | } | |
461 | ||
462 | struct regcache * | |
463 | get_current_regcache (void) | |
594f7785 UW |
464 | { |
465 | return get_thread_regcache (inferior_ptid); | |
466 | } | |
32178cab | 467 | |
361c8ade GB |
468 | /* See common/common-regcache.h. */ |
469 | ||
470 | struct regcache * | |
471 | get_thread_regcache_for_ptid (ptid_t ptid) | |
472 | { | |
473 | return get_thread_regcache (ptid); | |
474 | } | |
32178cab | 475 | |
f4c5303c OF |
476 | /* Observer for the target_changed event. */ |
477 | ||
2c0b251b | 478 | static void |
f4c5303c OF |
479 | regcache_observer_target_changed (struct target_ops *target) |
480 | { | |
481 | registers_changed (); | |
482 | } | |
483 | ||
5231c1fd PA |
484 | /* Update global variables old ptids to hold NEW_PTID if they were |
485 | holding OLD_PTID. */ | |
e521e87e YQ |
486 | void |
487 | regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 488 | { |
e521e87e | 489 | for (auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
490 | { |
491 | if (ptid_equal (regcache->ptid (), old_ptid)) | |
492 | regcache->set_ptid (new_ptid); | |
493 | } | |
5231c1fd PA |
494 | } |
495 | ||
32178cab MS |
496 | /* Low level examining and depositing of registers. |
497 | ||
498 | The caller is responsible for making sure that the inferior is | |
499 | stopped before calling the fetching routines, or it will get | |
500 | garbage. (a change from GDB version 3, in which the caller got the | |
501 | value from the last stop). */ | |
502 | ||
503 | /* REGISTERS_CHANGED () | |
504 | ||
505 | Indicate that registers may have changed, so invalidate the cache. */ | |
506 | ||
507 | void | |
e66408ed | 508 | registers_changed_ptid (ptid_t ptid) |
32178cab | 509 | { |
e521e87e | 510 | for (auto oit = regcache::current_regcache.before_begin (), |
94bb8dfe | 511 | it = std::next (oit); |
e521e87e | 512 | it != regcache::current_regcache.end (); |
94bb8dfe | 513 | ) |
c2250ad1 | 514 | { |
94bb8dfe | 515 | if (ptid_match ((*it)->ptid (), ptid)) |
e66408ed | 516 | { |
94bb8dfe | 517 | delete *it; |
e521e87e | 518 | it = regcache::current_regcache.erase_after (oit); |
e66408ed | 519 | } |
94bb8dfe YQ |
520 | else |
521 | oit = it++; | |
c2250ad1 | 522 | } |
32178cab | 523 | |
c34fd852 | 524 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
525 | { |
526 | current_thread_ptid = null_ptid; | |
527 | current_thread_arch = NULL; | |
528 | } | |
32178cab | 529 | |
c34fd852 | 530 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
531 | { |
532 | /* We just deleted the regcache of the current thread. Need to | |
533 | forget about any frames we have cached, too. */ | |
534 | reinit_frame_cache (); | |
535 | } | |
536 | } | |
c2250ad1 | 537 | |
041274d8 PA |
538 | void |
539 | registers_changed (void) | |
540 | { | |
541 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 542 | |
32178cab MS |
543 | /* Force cleanup of any alloca areas if using C alloca instead of |
544 | a builtin alloca. This particular call is used to clean up | |
545 | areas allocated by low level target code which may build up | |
546 | during lengthy interactions between gdb and the target before | |
547 | gdb gives control to the user (ie watchpoints). */ | |
548 | alloca (0); | |
32178cab MS |
549 | } |
550 | ||
8e368124 AH |
551 | void |
552 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 553 | { |
8e368124 | 554 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
555 | |
556 | regcache->raw_update (regnum); | |
557 | } | |
558 | ||
559 | void | |
560 | regcache::raw_update (int regnum) | |
561 | { | |
562 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
8e368124 | 563 | |
3fadccb3 AC |
564 | /* Make certain that the register cache is up-to-date with respect |
565 | to the current thread. This switching shouldn't be necessary | |
566 | only there is still only one target side register cache. Sigh! | |
567 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 568 | |
ef79d9a3 | 569 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 570 | { |
ef79d9a3 | 571 | target_fetch_registers (this, regnum); |
788c8b10 PA |
572 | |
573 | /* A number of targets can't access the whole set of raw | |
574 | registers (because the debug API provides no means to get at | |
575 | them). */ | |
ef79d9a3 YQ |
576 | if (m_register_status[regnum] == REG_UNKNOWN) |
577 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 578 | } |
8e368124 AH |
579 | } |
580 | ||
581 | enum register_status | |
582 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
583 | { |
584 | return regcache->raw_read (regnum, buf); | |
585 | } | |
586 | ||
587 | enum register_status | |
588 | regcache::raw_read (int regnum, gdb_byte *buf) | |
8e368124 AH |
589 | { |
590 | gdb_assert (buf != NULL); | |
ef79d9a3 | 591 | raw_update (regnum); |
05d1431c | 592 | |
ef79d9a3 YQ |
593 | if (m_register_status[regnum] != REG_VALID) |
594 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 595 | else |
ef79d9a3 YQ |
596 | memcpy (buf, register_buffer (regnum), |
597 | m_descr->sizeof_register[regnum]); | |
05d1431c | 598 | |
ef79d9a3 | 599 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
600 | } |
601 | ||
05d1431c | 602 | enum register_status |
28fc6740 | 603 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
604 | { |
605 | gdb_assert (regcache != NULL); | |
6f98355c | 606 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
607 | } |
608 | ||
6f98355c | 609 | template<typename T, typename> |
ef79d9a3 | 610 | enum register_status |
6f98355c | 611 | regcache::raw_read (int regnum, T *val) |
28fc6740 | 612 | { |
2d522557 | 613 | gdb_byte *buf; |
05d1431c | 614 | enum register_status status; |
123f5f96 | 615 | |
ef79d9a3 YQ |
616 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
617 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
618 | status = raw_read (regnum, buf); | |
05d1431c | 619 | if (status == REG_VALID) |
6f98355c YQ |
620 | *val = extract_integer<T> (buf, |
621 | m_descr->sizeof_register[regnum], | |
622 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
623 | else |
624 | *val = 0; | |
625 | return status; | |
28fc6740 AC |
626 | } |
627 | ||
05d1431c | 628 | enum register_status |
28fc6740 AC |
629 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
630 | ULONGEST *val) | |
ef79d9a3 YQ |
631 | { |
632 | gdb_assert (regcache != NULL); | |
6f98355c | 633 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
634 | } |
635 | ||
c00dcbe9 MK |
636 | void |
637 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
638 | { |
639 | gdb_assert (regcache != NULL); | |
6f98355c | 640 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
641 | } |
642 | ||
6f98355c | 643 | template<typename T, typename> |
ef79d9a3 | 644 | void |
6f98355c | 645 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 646 | { |
7c543f7b | 647 | gdb_byte *buf; |
123f5f96 | 648 | |
ef79d9a3 YQ |
649 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
650 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
651 | store_integer (buf, m_descr->sizeof_register[regnum], |
652 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 653 | raw_write (regnum, buf); |
c00dcbe9 MK |
654 | } |
655 | ||
656 | void | |
657 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
658 | ULONGEST val) | |
ef79d9a3 YQ |
659 | { |
660 | gdb_assert (regcache != NULL); | |
6f98355c | 661 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
662 | } |
663 | ||
9fd15b2e YQ |
664 | LONGEST |
665 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
666 | { | |
667 | LONGEST value; | |
668 | enum register_status status; | |
669 | ||
670 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
671 | if (status == REG_UNAVAILABLE) | |
672 | throw_error (NOT_AVAILABLE_ERROR, | |
673 | _("Register %d is not available"), regnum); | |
674 | return value; | |
675 | } | |
676 | ||
05d1431c | 677 | enum register_status |
2d522557 | 678 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
679 | { |
680 | return regcache->cooked_read (regnum, buf); | |
681 | } | |
682 | ||
683 | enum register_status | |
684 | regcache::cooked_read (int regnum, gdb_byte *buf) | |
68365089 | 685 | { |
d138e37a | 686 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
687 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
688 | if (regnum < m_descr->nr_raw_registers) | |
689 | return raw_read (regnum, buf); | |
690 | else if (m_readonly_p | |
691 | && m_register_status[regnum] != REG_UNKNOWN) | |
05d1431c PA |
692 | { |
693 | /* Read-only register cache, perhaps the cooked value was | |
694 | cached? */ | |
ef79d9a3 YQ |
695 | if (m_register_status[regnum] == REG_VALID) |
696 | memcpy (buf, register_buffer (regnum), | |
697 | m_descr->sizeof_register[regnum]); | |
05d1431c | 698 | else |
ef79d9a3 | 699 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 700 | |
ef79d9a3 | 701 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 702 | } |
ef79d9a3 | 703 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
704 | { |
705 | struct value *mark, *computed; | |
706 | enum register_status result = REG_VALID; | |
707 | ||
708 | mark = value_mark (); | |
709 | ||
ef79d9a3 YQ |
710 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
711 | this, regnum); | |
3543a589 TT |
712 | if (value_entirely_available (computed)) |
713 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 714 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
715 | else |
716 | { | |
ef79d9a3 | 717 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
718 | result = REG_UNAVAILABLE; |
719 | } | |
720 | ||
721 | value_free_to_mark (mark); | |
722 | ||
723 | return result; | |
724 | } | |
d138e37a | 725 | else |
ef79d9a3 | 726 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 727 | regnum, buf); |
61a0eb5b AC |
728 | } |
729 | ||
3543a589 TT |
730 | struct value * |
731 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
732 | { |
733 | return regcache->cooked_read_value (regnum); | |
734 | } | |
735 | ||
736 | struct value * | |
737 | regcache::cooked_read_value (int regnum) | |
3543a589 TT |
738 | { |
739 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 740 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 741 | |
ef79d9a3 YQ |
742 | if (regnum < m_descr->nr_raw_registers |
743 | || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN) | |
744 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) | |
3543a589 TT |
745 | { |
746 | struct value *result; | |
747 | ||
ef79d9a3 | 748 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
749 | VALUE_LVAL (result) = lval_register; |
750 | VALUE_REGNUM (result) = regnum; | |
751 | ||
752 | /* It is more efficient in general to do this delegation in this | |
753 | direction than in the other one, even though the value-based | |
754 | API is preferred. */ | |
ef79d9a3 YQ |
755 | if (cooked_read (regnum, |
756 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
757 | mark_value_bytes_unavailable (result, 0, |
758 | TYPE_LENGTH (value_type (result))); | |
759 | ||
760 | return result; | |
761 | } | |
762 | else | |
ef79d9a3 YQ |
763 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
764 | this, regnum); | |
3543a589 TT |
765 | } |
766 | ||
05d1431c | 767 | enum register_status |
a378f419 AC |
768 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
769 | LONGEST *val) | |
ef79d9a3 YQ |
770 | { |
771 | gdb_assert (regcache != NULL); | |
6f98355c | 772 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
773 | } |
774 | ||
6f98355c | 775 | template<typename T, typename> |
ef79d9a3 | 776 | enum register_status |
6f98355c | 777 | regcache::cooked_read (int regnum, T *val) |
a378f419 | 778 | { |
05d1431c | 779 | enum register_status status; |
2d522557 | 780 | gdb_byte *buf; |
123f5f96 | 781 | |
ef79d9a3 YQ |
782 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
783 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
784 | status = cooked_read (regnum, buf); | |
05d1431c | 785 | if (status == REG_VALID) |
6f98355c YQ |
786 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
787 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
788 | else |
789 | *val = 0; | |
790 | return status; | |
a378f419 AC |
791 | } |
792 | ||
05d1431c | 793 | enum register_status |
a378f419 AC |
794 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
795 | ULONGEST *val) | |
ef79d9a3 YQ |
796 | { |
797 | gdb_assert (regcache != NULL); | |
6f98355c | 798 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
799 | } |
800 | ||
a66a9c23 AC |
801 | void |
802 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
803 | LONGEST val) | |
ef79d9a3 YQ |
804 | { |
805 | gdb_assert (regcache != NULL); | |
6f98355c | 806 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
807 | } |
808 | ||
6f98355c | 809 | template<typename T, typename> |
ef79d9a3 | 810 | void |
6f98355c | 811 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 812 | { |
7c543f7b | 813 | gdb_byte *buf; |
123f5f96 | 814 | |
ef79d9a3 YQ |
815 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
816 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
817 | store_integer (buf, m_descr->sizeof_register[regnum], |
818 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 819 | cooked_write (regnum, buf); |
a66a9c23 AC |
820 | } |
821 | ||
822 | void | |
823 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
824 | ULONGEST val) | |
ef79d9a3 YQ |
825 | { |
826 | gdb_assert (regcache != NULL); | |
6f98355c | 827 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
828 | } |
829 | ||
20aa2c60 PA |
830 | /* See regcache.h. */ |
831 | ||
832 | void | |
833 | regcache_raw_set_cached_value (struct regcache *regcache, int regnum, | |
834 | const gdb_byte *buf) | |
835 | { | |
ef79d9a3 YQ |
836 | regcache->raw_set_cached_value (regnum, buf); |
837 | } | |
838 | ||
839 | void | |
840 | regcache::raw_set_cached_value (int regnum, const gdb_byte *buf) | |
841 | { | |
842 | memcpy (register_buffer (regnum), buf, | |
843 | m_descr->sizeof_register[regnum]); | |
844 | m_register_status[regnum] = REG_VALID; | |
20aa2c60 PA |
845 | } |
846 | ||
61a0eb5b | 847 | void |
2d522557 AC |
848 | regcache_raw_write (struct regcache *regcache, int regnum, |
849 | const gdb_byte *buf) | |
ef79d9a3 YQ |
850 | { |
851 | gdb_assert (regcache != NULL && buf != NULL); | |
852 | regcache->raw_write (regnum, buf); | |
853 | } | |
854 | ||
855 | void | |
856 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 857 | { |
594f7785 | 858 | |
ef79d9a3 YQ |
859 | gdb_assert (buf != NULL); |
860 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
861 | gdb_assert (!m_readonly_p); | |
3fadccb3 | 862 | |
3fadccb3 AC |
863 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
864 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 865 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
866 | return; |
867 | ||
3fadccb3 | 868 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 869 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
870 | if (get_register_status (regnum) == REG_VALID |
871 | && (memcmp (register_buffer (regnum), buf, | |
872 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
873 | return; |
874 | ||
ef79d9a3 YQ |
875 | target_prepare_to_store (this); |
876 | raw_set_cached_value (regnum, buf); | |
b94ade42 | 877 | |
b292235f TT |
878 | /* Invalidate the register after it is written, in case of a |
879 | failure. */ | |
880 | regcache_invalidator invalidator (this, regnum); | |
b94ade42 | 881 | |
ef79d9a3 | 882 | target_store_registers (this, regnum); |
594f7785 | 883 | |
b292235f TT |
884 | /* The target did not throw an error so we can discard invalidating |
885 | the register. */ | |
886 | invalidator.release (); | |
61a0eb5b AC |
887 | } |
888 | ||
68365089 | 889 | void |
2d522557 AC |
890 | regcache_cooked_write (struct regcache *regcache, int regnum, |
891 | const gdb_byte *buf) | |
ef79d9a3 YQ |
892 | { |
893 | regcache->cooked_write (regnum, buf); | |
894 | } | |
895 | ||
896 | void | |
897 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 898 | { |
d138e37a | 899 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
900 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
901 | if (regnum < m_descr->nr_raw_registers) | |
902 | raw_write (regnum, buf); | |
d138e37a | 903 | else |
ef79d9a3 | 904 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 905 | regnum, buf); |
61a0eb5b AC |
906 | } |
907 | ||
06c0b04e AC |
908 | /* Perform a partial register transfer using a read, modify, write |
909 | operation. */ | |
910 | ||
911 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
912 | void *buf); | |
913 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
914 | const void *buf); | |
915 | ||
ef79d9a3 YQ |
916 | enum register_status |
917 | regcache::xfer_part (int regnum, int offset, int len, void *in, | |
918 | const void *out, | |
919 | enum register_status (*read) (struct regcache *regcache, | |
920 | int regnum, | |
921 | gdb_byte *buf), | |
922 | void (*write) (struct regcache *regcache, int regnum, | |
923 | const gdb_byte *buf)) | |
924 | { | |
925 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 926 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 927 | |
ef79d9a3 YQ |
928 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
929 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
930 | /* Something to do? */ |
931 | if (offset + len == 0) | |
05d1431c | 932 | return REG_VALID; |
0df8b418 | 933 | /* Read (when needed) ... */ |
06c0b04e AC |
934 | if (in != NULL |
935 | || offset > 0 | |
ef79d9a3 | 936 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 937 | { |
05d1431c PA |
938 | enum register_status status; |
939 | ||
06c0b04e | 940 | gdb_assert (read != NULL); |
ef79d9a3 | 941 | status = read (this, regnum, reg); |
05d1431c PA |
942 | if (status != REG_VALID) |
943 | return status; | |
06c0b04e | 944 | } |
0df8b418 | 945 | /* ... modify ... */ |
06c0b04e AC |
946 | if (in != NULL) |
947 | memcpy (in, reg + offset, len); | |
948 | if (out != NULL) | |
949 | memcpy (reg + offset, out, len); | |
950 | /* ... write (when needed). */ | |
951 | if (out != NULL) | |
952 | { | |
953 | gdb_assert (write != NULL); | |
ef79d9a3 | 954 | write (this, regnum, reg); |
06c0b04e | 955 | } |
05d1431c PA |
956 | |
957 | return REG_VALID; | |
06c0b04e AC |
958 | } |
959 | ||
05d1431c | 960 | enum register_status |
06c0b04e | 961 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 962 | int offset, int len, gdb_byte *buf) |
06c0b04e | 963 | { |
ef79d9a3 YQ |
964 | return regcache->raw_read_part (regnum, offset, len, buf); |
965 | } | |
123f5f96 | 966 | |
ef79d9a3 YQ |
967 | enum register_status |
968 | regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
969 | { | |
970 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
971 | return xfer_part (regnum, offset, len, buf, NULL, | |
972 | regcache_raw_read, regcache_raw_write); | |
06c0b04e AC |
973 | } |
974 | ||
975 | void | |
976 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 977 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 978 | { |
ef79d9a3 YQ |
979 | regcache->raw_write_part (regnum, offset, len, buf); |
980 | } | |
123f5f96 | 981 | |
ef79d9a3 YQ |
982 | void |
983 | regcache::raw_write_part (int regnum, int offset, int len, | |
984 | const gdb_byte *buf) | |
985 | { | |
986 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
987 | xfer_part (regnum, offset, len, NULL, buf, regcache_raw_read, | |
988 | regcache_raw_write); | |
06c0b04e AC |
989 | } |
990 | ||
05d1431c | 991 | enum register_status |
06c0b04e | 992 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 993 | int offset, int len, gdb_byte *buf) |
06c0b04e | 994 | { |
ef79d9a3 YQ |
995 | return regcache->cooked_read_part (regnum, offset, len, buf); |
996 | } | |
123f5f96 | 997 | |
ef79d9a3 YQ |
998 | |
999 | enum register_status | |
1000 | regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1001 | { | |
1002 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1003 | return xfer_part (regnum, offset, len, buf, NULL, | |
1004 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e AC |
1005 | } |
1006 | ||
1007 | void | |
1008 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1009 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1010 | { |
ef79d9a3 YQ |
1011 | regcache->cooked_write_part (regnum, offset, len, buf); |
1012 | } | |
123f5f96 | 1013 | |
ef79d9a3 YQ |
1014 | void |
1015 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1016 | const gdb_byte *buf) | |
1017 | { | |
1018 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1019 | xfer_part (regnum, offset, len, NULL, buf, | |
1020 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e | 1021 | } |
32178cab | 1022 | |
a16d75cc | 1023 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1024 | |
1025 | void | |
6618125d | 1026 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
1027 | { |
1028 | gdb_assert (regcache != NULL); | |
1029 | regcache->raw_supply (regnum, buf); | |
1030 | } | |
1031 | ||
1032 | void | |
1033 | regcache::raw_supply (int regnum, const void *buf) | |
9a661b68 MK |
1034 | { |
1035 | void *regbuf; | |
1036 | size_t size; | |
1037 | ||
ef79d9a3 YQ |
1038 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
1039 | gdb_assert (!m_readonly_p); | |
9a661b68 | 1040 | |
ef79d9a3 YQ |
1041 | regbuf = register_buffer (regnum); |
1042 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1043 | |
1044 | if (buf) | |
ee99023e PA |
1045 | { |
1046 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1047 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1048 | } |
9a661b68 | 1049 | else |
ee99023e PA |
1050 | { |
1051 | /* This memset not strictly necessary, but better than garbage | |
1052 | in case the register value manages to escape somewhere (due | |
1053 | to a bug, no less). */ | |
1054 | memset (regbuf, 0, size); | |
ef79d9a3 | 1055 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1056 | } |
9a661b68 MK |
1057 | } |
1058 | ||
b057297a AH |
1059 | /* Supply register REGNUM to REGCACHE. Value to supply is an integer stored at |
1060 | address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. If | |
1061 | the register size is greater than ADDR_LEN, then the integer will be sign or | |
1062 | zero extended. If the register size is smaller than the integer, then the | |
1063 | most significant bytes of the integer will be truncated. */ | |
1064 | ||
1065 | void | |
1066 | regcache::raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len, | |
1067 | bool is_signed) | |
1068 | { | |
1069 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1070 | gdb_byte *regbuf; | |
1071 | size_t regsize; | |
1072 | ||
1073 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1074 | gdb_assert (!m_readonly_p); | |
1075 | ||
1076 | regbuf = register_buffer (regnum); | |
1077 | regsize = m_descr->sizeof_register[regnum]; | |
1078 | ||
1079 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1080 | byte_order); | |
1081 | m_register_status[regnum] = REG_VALID; | |
1082 | } | |
1083 | ||
f81fdd35 AH |
1084 | /* Supply register REGNUM with zeroed value to REGCACHE. This is not the same |
1085 | as calling raw_supply with NULL (which will set the state to | |
1086 | unavailable). */ | |
1087 | ||
1088 | void | |
1089 | regcache::raw_supply_zeroed (int regnum) | |
1090 | { | |
1091 | void *regbuf; | |
1092 | size_t size; | |
1093 | ||
1094 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1095 | gdb_assert (!m_readonly_p); | |
1096 | ||
1097 | regbuf = register_buffer (regnum); | |
1098 | size = m_descr->sizeof_register[regnum]; | |
1099 | ||
1100 | memset (regbuf, 0, size); | |
1101 | m_register_status[regnum] = REG_VALID; | |
1102 | } | |
1103 | ||
9a661b68 MK |
1104 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ |
1105 | ||
1106 | void | |
6618125d | 1107 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1108 | { |
1109 | gdb_assert (regcache != NULL && buf != NULL); | |
1110 | regcache->raw_collect (regnum, buf); | |
1111 | } | |
1112 | ||
1113 | void | |
1114 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1115 | { |
1116 | const void *regbuf; | |
1117 | size_t size; | |
1118 | ||
ef79d9a3 YQ |
1119 | gdb_assert (buf != NULL); |
1120 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
9a661b68 | 1121 | |
ef79d9a3 YQ |
1122 | regbuf = register_buffer (regnum); |
1123 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1124 | memcpy (buf, regbuf, size); |
1125 | } | |
1126 | ||
0b309272 AA |
1127 | /* Transfer a single or all registers belonging to a certain register |
1128 | set to or from a buffer. This is the main worker function for | |
1129 | regcache_supply_regset and regcache_collect_regset. */ | |
1130 | ||
b057297a AH |
1131 | /* Collect register REGNUM from REGCACHE. Store collected value as an integer |
1132 | at address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. | |
1133 | If ADDR_LEN is greater than the register size, then the integer will be sign | |
1134 | or zero extended. If ADDR_LEN is smaller than the register size, then the | |
1135 | most significant bytes of the integer will be truncated. */ | |
1136 | ||
1137 | void | |
1138 | regcache::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, | |
1139 | bool is_signed) const | |
1140 | { | |
1141 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1142 | const gdb_byte *regbuf; | |
1143 | size_t regsize; | |
1144 | ||
1145 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1146 | ||
1147 | regbuf = register_buffer (regnum); | |
1148 | regsize = m_descr->sizeof_register[regnum]; | |
1149 | ||
1150 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1151 | byte_order); | |
1152 | } | |
1153 | ||
ef79d9a3 YQ |
1154 | void |
1155 | regcache::transfer_regset (const struct regset *regset, | |
1156 | struct regcache *out_regcache, | |
1157 | int regnum, const void *in_buf, | |
1158 | void *out_buf, size_t size) const | |
0b309272 AA |
1159 | { |
1160 | const struct regcache_map_entry *map; | |
1161 | int offs = 0, count; | |
1162 | ||
19ba03f4 SM |
1163 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1164 | (count = map->count) != 0; | |
1165 | map++) | |
0b309272 AA |
1166 | { |
1167 | int regno = map->regno; | |
1168 | int slot_size = map->size; | |
1169 | ||
1170 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1171 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1172 | |
1173 | if (regno == REGCACHE_MAP_SKIP | |
1174 | || (regnum != -1 | |
1175 | && (regnum < regno || regnum >= regno + count))) | |
1176 | offs += count * slot_size; | |
1177 | ||
1178 | else if (regnum == -1) | |
1179 | for (; count--; regno++, offs += slot_size) | |
1180 | { | |
1181 | if (offs + slot_size > size) | |
1182 | break; | |
1183 | ||
1184 | if (out_buf) | |
ef79d9a3 | 1185 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1186 | else |
ef79d9a3 YQ |
1187 | out_regcache->raw_supply (regno, in_buf |
1188 | ? (const gdb_byte *) in_buf + offs | |
1189 | : NULL); | |
0b309272 AA |
1190 | } |
1191 | else | |
1192 | { | |
1193 | /* Transfer a single register and return. */ | |
1194 | offs += (regnum - regno) * slot_size; | |
1195 | if (offs + slot_size > size) | |
1196 | return; | |
1197 | ||
1198 | if (out_buf) | |
ef79d9a3 | 1199 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1200 | else |
ef79d9a3 YQ |
1201 | out_regcache->raw_supply (regnum, in_buf |
1202 | ? (const gdb_byte *) in_buf + offs | |
1203 | : NULL); | |
0b309272 AA |
1204 | return; |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1210 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1211 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1212 | ||
1213 | void | |
1214 | regcache_supply_regset (const struct regset *regset, | |
1215 | struct regcache *regcache, | |
1216 | int regnum, const void *buf, size_t size) | |
1217 | { | |
ef79d9a3 YQ |
1218 | regcache->supply_regset (regset, regnum, buf, size); |
1219 | } | |
1220 | ||
1221 | void | |
1222 | regcache::supply_regset (const struct regset *regset, | |
1223 | int regnum, const void *buf, size_t size) | |
1224 | { | |
1225 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1226 | } |
1227 | ||
1228 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1229 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1230 | REGSET. */ | |
1231 | ||
1232 | void | |
1233 | regcache_collect_regset (const struct regset *regset, | |
1234 | const struct regcache *regcache, | |
1235 | int regnum, void *buf, size_t size) | |
1236 | { | |
ef79d9a3 YQ |
1237 | regcache->collect_regset (regset, regnum, buf, size); |
1238 | } | |
1239 | ||
1240 | void | |
1241 | regcache::collect_regset (const struct regset *regset, | |
1242 | int regnum, void *buf, size_t size) const | |
1243 | { | |
1244 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1245 | } |
1246 | ||
193cb69f | 1247 | |
515630c5 | 1248 | /* Special handling for register PC. */ |
32178cab MS |
1249 | |
1250 | CORE_ADDR | |
515630c5 | 1251 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1252 | { |
61a1198a UW |
1253 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1254 | ||
32178cab MS |
1255 | CORE_ADDR pc_val; |
1256 | ||
61a1198a UW |
1257 | if (gdbarch_read_pc_p (gdbarch)) |
1258 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1259 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1260 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1261 | { |
61a1198a | 1262 | ULONGEST raw_val; |
123f5f96 | 1263 | |
05d1431c PA |
1264 | if (regcache_cooked_read_unsigned (regcache, |
1265 | gdbarch_pc_regnum (gdbarch), | |
1266 | &raw_val) == REG_UNAVAILABLE) | |
1267 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1268 | ||
214e098a | 1269 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1270 | } |
1271 | else | |
515630c5 UW |
1272 | internal_error (__FILE__, __LINE__, |
1273 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1274 | return pc_val; |
1275 | } | |
1276 | ||
32178cab | 1277 | void |
515630c5 | 1278 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1279 | { |
61a1198a UW |
1280 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1281 | ||
61a1198a UW |
1282 | if (gdbarch_write_pc_p (gdbarch)) |
1283 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1284 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1285 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1286 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1287 | else |
1288 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1289 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1290 | |
1291 | /* Writing the PC (for instance, from "load") invalidates the | |
1292 | current frame. */ | |
1293 | reinit_frame_cache (); | |
32178cab MS |
1294 | } |
1295 | ||
ed771251 | 1296 | void |
ef79d9a3 | 1297 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1298 | { |
ef79d9a3 | 1299 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1300 | |
1301 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1302 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1303 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1304 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1305 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1306 | gdbarch_register_name (gdbarch, regno)); | |
1307 | else | |
1308 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1309 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1310 | { | |
1311 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1312 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1313 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1314 | |
1315 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1316 | for (int i = 0; i < size; i++) | |
1317 | { | |
1318 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1319 | } | |
1320 | if (size <= sizeof (LONGEST)) | |
1321 | { | |
1322 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1323 | ||
1324 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1325 | core_addr_to_string_nz (val), plongest (val)); | |
1326 | } | |
1327 | } | |
1328 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1329 | } | |
32178cab | 1330 | |
705152c5 MS |
1331 | static void |
1332 | reg_flush_command (char *command, int from_tty) | |
1333 | { | |
1334 | /* Force-flush the register cache. */ | |
1335 | registers_changed (); | |
1336 | if (from_tty) | |
a3f17187 | 1337 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1338 | } |
1339 | ||
ef79d9a3 YQ |
1340 | void |
1341 | regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump) | |
af030b9a | 1342 | { |
ef79d9a3 | 1343 | struct gdbarch *gdbarch = m_descr->gdbarch; |
af030b9a AC |
1344 | int regnum; |
1345 | int footnote_nr = 0; | |
1346 | int footnote_register_size = 0; | |
1347 | int footnote_register_offset = 0; | |
1348 | int footnote_register_type_name_null = 0; | |
1349 | long register_offset = 0; | |
af030b9a AC |
1350 | |
1351 | #if 0 | |
af030b9a | 1352 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
ef79d9a3 | 1353 | m_descr->nr_raw_registers); |
af030b9a | 1354 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", |
ef79d9a3 | 1355 | m_descr->nr_cooked_registers); |
af030b9a | 1356 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", |
ef79d9a3 | 1357 | m_descr->sizeof_raw_registers); |
ee99023e | 1358 | fprintf_unfiltered (file, "sizeof_raw_register_status %ld\n", |
ef79d9a3 | 1359 | m_descr->sizeof_raw_register_status); |
f57d151a | 1360 | fprintf_unfiltered (file, "gdbarch_num_regs %d\n", |
214e098a | 1361 | gdbarch_num_regs (gdbarch)); |
f57d151a | 1362 | fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n", |
214e098a | 1363 | gdbarch_num_pseudo_regs (gdbarch)); |
af030b9a AC |
1364 | #endif |
1365 | ||
ef79d9a3 | 1366 | gdb_assert (m_descr->nr_cooked_registers |
214e098a UW |
1367 | == (gdbarch_num_regs (gdbarch) |
1368 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a | 1369 | |
ef79d9a3 | 1370 | for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++) |
af030b9a AC |
1371 | { |
1372 | /* Name. */ | |
1373 | if (regnum < 0) | |
1374 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1375 | else | |
1376 | { | |
214e098a | 1377 | const char *p = gdbarch_register_name (gdbarch, regnum); |
123f5f96 | 1378 | |
af030b9a AC |
1379 | if (p == NULL) |
1380 | p = ""; | |
1381 | else if (p[0] == '\0') | |
1382 | p = "''"; | |
1383 | fprintf_unfiltered (file, " %-10s", p); | |
1384 | } | |
1385 | ||
1386 | /* Number. */ | |
1387 | if (regnum < 0) | |
1388 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1389 | else | |
1390 | fprintf_unfiltered (file, " %4d", regnum); | |
1391 | ||
1392 | /* Relative number. */ | |
1393 | if (regnum < 0) | |
1394 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 1395 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
1396 | fprintf_unfiltered (file, " %4d", regnum); |
1397 | else | |
f57d151a | 1398 | fprintf_unfiltered (file, " %4d", |
214e098a | 1399 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
1400 | |
1401 | /* Offset. */ | |
1402 | if (regnum < 0) | |
1403 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1404 | else | |
1405 | { | |
1406 | fprintf_unfiltered (file, " %6ld", | |
ef79d9a3 YQ |
1407 | m_descr->register_offset[regnum]); |
1408 | if (register_offset != m_descr->register_offset[regnum] | |
d3b22ed5 | 1409 | || (regnum > 0 |
ef79d9a3 YQ |
1410 | && (m_descr->register_offset[regnum] |
1411 | != (m_descr->register_offset[regnum - 1] | |
1412 | + m_descr->sizeof_register[regnum - 1]))) | |
d3b22ed5 | 1413 | ) |
af030b9a AC |
1414 | { |
1415 | if (!footnote_register_offset) | |
1416 | footnote_register_offset = ++footnote_nr; | |
1417 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1418 | } | |
1419 | else | |
1420 | fprintf_unfiltered (file, " "); | |
ef79d9a3 YQ |
1421 | register_offset = (m_descr->register_offset[regnum] |
1422 | + m_descr->sizeof_register[regnum]); | |
af030b9a AC |
1423 | } |
1424 | ||
1425 | /* Size. */ | |
1426 | if (regnum < 0) | |
1427 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1428 | else | |
ef79d9a3 | 1429 | fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]); |
af030b9a AC |
1430 | |
1431 | /* Type. */ | |
b59ff9d5 AC |
1432 | { |
1433 | const char *t; | |
6c3e20f1 | 1434 | std::string name_holder; |
123f5f96 | 1435 | |
b59ff9d5 AC |
1436 | if (regnum < 0) |
1437 | t = "Type"; | |
1438 | else | |
1439 | { | |
1440 | static const char blt[] = "builtin_type"; | |
123f5f96 | 1441 | |
ef79d9a3 | 1442 | t = TYPE_NAME (register_type (arch (), regnum)); |
b59ff9d5 AC |
1443 | if (t == NULL) |
1444 | { | |
b59ff9d5 AC |
1445 | if (!footnote_register_type_name_null) |
1446 | footnote_register_type_name_null = ++footnote_nr; | |
6c3e20f1 TT |
1447 | name_holder = string_printf ("*%d", |
1448 | footnote_register_type_name_null); | |
1449 | t = name_holder.c_str (); | |
b59ff9d5 AC |
1450 | } |
1451 | /* Chop a leading builtin_type. */ | |
61012eef | 1452 | if (startswith (t, blt)) |
b59ff9d5 AC |
1453 | t += strlen (blt); |
1454 | } | |
1455 | fprintf_unfiltered (file, " %-15s", t); | |
1456 | } | |
1457 | ||
1458 | /* Leading space always present. */ | |
1459 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1460 | |
1461 | /* Value, raw. */ | |
1462 | if (what_to_dump == regcache_dump_raw) | |
1463 | { | |
1464 | if (regnum < 0) | |
1465 | fprintf_unfiltered (file, "Raw value"); | |
ef79d9a3 | 1466 | else if (regnum >= m_descr->nr_raw_registers) |
af030b9a | 1467 | fprintf_unfiltered (file, "<cooked>"); |
ef79d9a3 | 1468 | else if (get_register_status (regnum) == REG_UNKNOWN) |
af030b9a | 1469 | fprintf_unfiltered (file, "<invalid>"); |
ef79d9a3 | 1470 | else if (get_register_status (regnum) == REG_UNAVAILABLE) |
ee99023e | 1471 | fprintf_unfiltered (file, "<unavailable>"); |
af030b9a AC |
1472 | else |
1473 | { | |
50d6adef AH |
1474 | raw_update (regnum); |
1475 | print_hex_chars (file, register_buffer (regnum), | |
ef79d9a3 | 1476 | m_descr->sizeof_register[regnum], |
30a25466 | 1477 | gdbarch_byte_order (gdbarch), true); |
af030b9a AC |
1478 | } |
1479 | } | |
1480 | ||
1481 | /* Value, cooked. */ | |
1482 | if (what_to_dump == regcache_dump_cooked) | |
1483 | { | |
1484 | if (regnum < 0) | |
1485 | fprintf_unfiltered (file, "Cooked value"); | |
1486 | else | |
1487 | { | |
50d6adef | 1488 | const gdb_byte *buf = NULL; |
05d1431c | 1489 | enum register_status status; |
50d6adef AH |
1490 | struct value *value = NULL; |
1491 | ||
1492 | if (regnum < m_descr->nr_raw_registers) | |
1493 | { | |
1494 | raw_update (regnum); | |
1495 | status = get_register_status (regnum); | |
1496 | buf = register_buffer (regnum); | |
1497 | } | |
1498 | else | |
1499 | { | |
1500 | value = cooked_read_value (regnum); | |
1501 | ||
1502 | if (!value_optimized_out (value) | |
1503 | && value_entirely_available (value)) | |
1504 | { | |
1505 | status = REG_VALID; | |
1506 | buf = value_contents_all (value); | |
1507 | } | |
1508 | else | |
1509 | status = REG_UNAVAILABLE; | |
1510 | } | |
05d1431c | 1511 | |
05d1431c PA |
1512 | if (status == REG_UNKNOWN) |
1513 | fprintf_unfiltered (file, "<invalid>"); | |
1514 | else if (status == REG_UNAVAILABLE) | |
1515 | fprintf_unfiltered (file, "<unavailable>"); | |
1516 | else | |
d3eaaf66 | 1517 | print_hex_chars (file, buf, |
ef79d9a3 | 1518 | m_descr->sizeof_register[regnum], |
30a25466 | 1519 | gdbarch_byte_order (gdbarch), true); |
50d6adef AH |
1520 | |
1521 | if (value != NULL) | |
1522 | { | |
1523 | release_value (value); | |
1524 | value_free (value); | |
1525 | } | |
af030b9a AC |
1526 | } |
1527 | } | |
1528 | ||
b59ff9d5 AC |
1529 | /* Group members. */ |
1530 | if (what_to_dump == regcache_dump_groups) | |
1531 | { | |
1532 | if (regnum < 0) | |
1533 | fprintf_unfiltered (file, "Groups"); | |
1534 | else | |
1535 | { | |
b59ff9d5 | 1536 | const char *sep = ""; |
6c7d17ba | 1537 | struct reggroup *group; |
123f5f96 | 1538 | |
6c7d17ba AC |
1539 | for (group = reggroup_next (gdbarch, NULL); |
1540 | group != NULL; | |
1541 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1542 | { |
6c7d17ba | 1543 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1544 | { |
3e43a32a MS |
1545 | fprintf_unfiltered (file, |
1546 | "%s%s", sep, reggroup_name (group)); | |
b59ff9d5 AC |
1547 | sep = ","; |
1548 | } | |
1549 | } | |
1550 | } | |
1551 | } | |
1552 | ||
c21236dc PA |
1553 | /* Remote packet configuration. */ |
1554 | if (what_to_dump == regcache_dump_remote) | |
1555 | { | |
1556 | if (regnum < 0) | |
1557 | { | |
1558 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1559 | } | |
ef79d9a3 | 1560 | else if (regnum < m_descr->nr_raw_registers) |
c21236dc PA |
1561 | { |
1562 | int pnum, poffset; | |
1563 | ||
ef79d9a3 | 1564 | if (remote_register_number_and_offset (arch (), regnum, |
c21236dc PA |
1565 | &pnum, &poffset)) |
1566 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1567 | } | |
1568 | } | |
1569 | ||
af030b9a AC |
1570 | fprintf_unfiltered (file, "\n"); |
1571 | } | |
1572 | ||
1573 | if (footnote_register_size) | |
1574 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1575 | footnote_register_size); | |
1576 | if (footnote_register_offset) | |
1577 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1578 | footnote_register_offset); | |
1579 | if (footnote_register_type_name_null) | |
1580 | fprintf_unfiltered (file, | |
1581 | "*%d: Register type's name NULL.\n", | |
1582 | footnote_register_type_name_null); | |
af030b9a AC |
1583 | } |
1584 | ||
1585 | static void | |
4e001312 | 1586 | regcache_print (const char *args, enum regcache_dump_what what_to_dump) |
af030b9a | 1587 | { |
ed4227b7 PA |
1588 | /* Where to send output. */ |
1589 | stdio_file file; | |
1590 | ui_file *out; | |
1591 | ||
af030b9a | 1592 | if (args == NULL) |
ed4227b7 | 1593 | out = gdb_stdout; |
af030b9a AC |
1594 | else |
1595 | { | |
d7e74731 | 1596 | if (!file.open (args, "w")) |
e2e0b3e5 | 1597 | perror_with_name (_("maintenance print architecture")); |
ed4227b7 PA |
1598 | out = &file; |
1599 | } | |
1600 | ||
1601 | if (target_has_registers) | |
1602 | get_current_regcache ()->dump (out, what_to_dump); | |
1603 | else | |
1604 | { | |
1605 | /* For the benefit of "maint print registers" & co when | |
1606 | debugging an executable, allow dumping a regcache even when | |
1607 | there is no thread selected / no registers. */ | |
1608 | regcache dummy_regs (target_gdbarch (), nullptr); | |
1609 | dummy_regs.dump (out, what_to_dump); | |
af030b9a AC |
1610 | } |
1611 | } | |
1612 | ||
1613 | static void | |
4e001312 | 1614 | maintenance_print_registers (const char *args, int from_tty) |
af030b9a AC |
1615 | { |
1616 | regcache_print (args, regcache_dump_none); | |
1617 | } | |
1618 | ||
1619 | static void | |
4e001312 | 1620 | maintenance_print_raw_registers (const char *args, int from_tty) |
af030b9a AC |
1621 | { |
1622 | regcache_print (args, regcache_dump_raw); | |
1623 | } | |
1624 | ||
1625 | static void | |
4e001312 | 1626 | maintenance_print_cooked_registers (const char *args, int from_tty) |
af030b9a AC |
1627 | { |
1628 | regcache_print (args, regcache_dump_cooked); | |
1629 | } | |
1630 | ||
b59ff9d5 | 1631 | static void |
4e001312 | 1632 | maintenance_print_register_groups (const char *args, int from_tty) |
b59ff9d5 AC |
1633 | { |
1634 | regcache_print (args, regcache_dump_groups); | |
1635 | } | |
1636 | ||
c21236dc | 1637 | static void |
4e001312 | 1638 | maintenance_print_remote_registers (const char *args, int from_tty) |
c21236dc PA |
1639 | { |
1640 | regcache_print (args, regcache_dump_remote); | |
1641 | } | |
1642 | ||
8248946c YQ |
1643 | #if GDB_SELF_TEST |
1644 | #include "selftest.h" | |
1645 | ||
1646 | namespace selftests { | |
1647 | ||
e521e87e | 1648 | class regcache_access : public regcache |
8248946c | 1649 | { |
e521e87e YQ |
1650 | public: |
1651 | ||
1652 | /* Return the number of elements in current_regcache. */ | |
1653 | ||
1654 | static size_t | |
1655 | current_regcache_size () | |
1656 | { | |
1657 | return std::distance (regcache::current_regcache.begin (), | |
1658 | regcache::current_regcache.end ()); | |
1659 | } | |
1660 | }; | |
8248946c YQ |
1661 | |
1662 | static void | |
1663 | current_regcache_test (void) | |
1664 | { | |
1665 | /* It is empty at the start. */ | |
e521e87e | 1666 | SELF_CHECK (regcache_access::current_regcache_size () == 0); |
8248946c YQ |
1667 | |
1668 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1669 | ||
1670 | /* Get regcache from ptid1, a new regcache is added to | |
1671 | current_regcache. */ | |
1672 | regcache *regcache = get_thread_arch_aspace_regcache (ptid1, | |
1673 | target_gdbarch (), | |
1674 | NULL); | |
1675 | ||
1676 | SELF_CHECK (regcache != NULL); | |
1677 | SELF_CHECK (regcache->ptid () == ptid1); | |
e521e87e | 1678 | SELF_CHECK (regcache_access::current_regcache_size () == 1); |
8248946c YQ |
1679 | |
1680 | /* Get regcache from ptid2, a new regcache is added to | |
1681 | current_regcache. */ | |
1682 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1683 | target_gdbarch (), | |
1684 | NULL); | |
1685 | SELF_CHECK (regcache != NULL); | |
1686 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1687 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1688 | |
1689 | /* Get regcache from ptid3, a new regcache is added to | |
1690 | current_regcache. */ | |
1691 | regcache = get_thread_arch_aspace_regcache (ptid3, | |
1692 | target_gdbarch (), | |
1693 | NULL); | |
1694 | SELF_CHECK (regcache != NULL); | |
1695 | SELF_CHECK (regcache->ptid () == ptid3); | |
e521e87e | 1696 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1697 | |
1698 | /* Get regcache from ptid2 again, nothing is added to | |
1699 | current_regcache. */ | |
1700 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1701 | target_gdbarch (), | |
1702 | NULL); | |
1703 | SELF_CHECK (regcache != NULL); | |
1704 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1705 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1706 | |
1707 | /* Mark ptid2 is changed, so regcache of ptid2 should be removed from | |
1708 | current_regcache. */ | |
1709 | registers_changed_ptid (ptid2); | |
e521e87e | 1710 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1711 | } |
1712 | ||
1713 | } // namespace selftests | |
1714 | #endif /* GDB_SELF_TEST */ | |
1715 | ||
32178cab MS |
1716 | void |
1717 | _initialize_regcache (void) | |
1718 | { | |
3e43a32a MS |
1719 | regcache_descr_handle |
1720 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1721 | |
f4c5303c | 1722 | observer_attach_target_changed (regcache_observer_target_changed); |
e521e87e | 1723 | observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed); |
f4c5303c | 1724 | |
705152c5 | 1725 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1726 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1727 | |
3e43a32a MS |
1728 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
1729 | _("Print the internal register configuration.\n" | |
1730 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1731 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
1732 | maintenance_print_raw_registers, |
1733 | _("Print the internal register configuration " | |
1734 | "including raw values.\n" | |
1735 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1736 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
1737 | maintenance_print_cooked_registers, |
1738 | _("Print the internal register configuration " | |
1739 | "including cooked values.\n" | |
1740 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1741 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
1742 | maintenance_print_register_groups, |
1743 | _("Print the internal register configuration " | |
1744 | "including each register's group.\n" | |
1745 | "Takes an optional file parameter."), | |
af030b9a | 1746 | &maintenanceprintlist); |
c21236dc PA |
1747 | add_cmd ("remote-registers", class_maintenance, |
1748 | maintenance_print_remote_registers, _("\ | |
1749 | Print the internal register configuration including each register's\n\ | |
1750 | remote register number and buffer offset in the g/G packets.\n\ | |
1751 | Takes an optional file parameter."), | |
1752 | &maintenanceprintlist); | |
1526853e | 1753 | |
8248946c | 1754 | #if GDB_SELF_TEST |
1526853e | 1755 | selftests::register_test ("current_regcache", selftests::current_regcache_test); |
8248946c | 1756 | #endif |
32178cab | 1757 | } |