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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 | ||
99e42fd8 PA |
244 | struct regcache * |
245 | regcache_xmalloc (struct gdbarch *gdbarch, struct address_space *aspace) | |
246 | { | |
4621115f | 247 | return new regcache (gdbarch, aspace); |
99e42fd8 PA |
248 | } |
249 | ||
3fadccb3 AC |
250 | void |
251 | regcache_xfree (struct regcache *regcache) | |
252 | { | |
253 | if (regcache == NULL) | |
254 | return; | |
4621115f YQ |
255 | |
256 | delete regcache; | |
3fadccb3 AC |
257 | } |
258 | ||
b9362cc7 | 259 | static void |
36160dc4 AC |
260 | do_regcache_xfree (void *data) |
261 | { | |
19ba03f4 | 262 | regcache_xfree ((struct regcache *) data); |
36160dc4 AC |
263 | } |
264 | ||
265 | struct cleanup * | |
266 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
267 | { | |
268 | return make_cleanup (do_regcache_xfree, regcache); | |
269 | } | |
270 | ||
b94ade42 PL |
271 | /* Cleanup routines for invalidating a register. */ |
272 | ||
273 | struct register_to_invalidate | |
274 | { | |
275 | struct regcache *regcache; | |
276 | int regnum; | |
277 | }; | |
278 | ||
279 | static void | |
280 | do_regcache_invalidate (void *data) | |
281 | { | |
19ba03f4 | 282 | struct register_to_invalidate *reg = (struct register_to_invalidate *) data; |
b94ade42 PL |
283 | |
284 | regcache_invalidate (reg->regcache, reg->regnum); | |
285 | } | |
286 | ||
287 | static struct cleanup * | |
288 | make_cleanup_regcache_invalidate (struct regcache *regcache, int regnum) | |
289 | { | |
290 | struct register_to_invalidate* reg = XNEW (struct register_to_invalidate); | |
291 | ||
292 | reg->regcache = regcache; | |
293 | reg->regnum = regnum; | |
294 | return make_cleanup_dtor (do_regcache_invalidate, (void *) reg, xfree); | |
295 | } | |
296 | ||
41d35cb0 MK |
297 | /* Return REGCACHE's architecture. */ |
298 | ||
299 | struct gdbarch * | |
300 | get_regcache_arch (const struct regcache *regcache) | |
301 | { | |
ef79d9a3 | 302 | return regcache->arch (); |
41d35cb0 MK |
303 | } |
304 | ||
6c95b8df PA |
305 | struct address_space * |
306 | get_regcache_aspace (const struct regcache *regcache) | |
307 | { | |
ef79d9a3 | 308 | return regcache->aspace (); |
6c95b8df PA |
309 | } |
310 | ||
51b1fe4e AC |
311 | /* Return a pointer to register REGNUM's buffer cache. */ |
312 | ||
ef79d9a3 YQ |
313 | gdb_byte * |
314 | regcache::register_buffer (int regnum) const | |
51b1fe4e | 315 | { |
ef79d9a3 | 316 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
317 | } |
318 | ||
2d28509a | 319 | void |
ef79d9a3 YQ |
320 | regcache_save (struct regcache *regcache, |
321 | regcache_cooked_read_ftype *cooked_read, void *src) | |
2d28509a | 322 | { |
ef79d9a3 YQ |
323 | regcache->save (cooked_read, src); |
324 | } | |
325 | ||
326 | void | |
327 | regcache::save (regcache_cooked_read_ftype *cooked_read, | |
328 | void *src) | |
329 | { | |
330 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d28509a | 331 | int regnum; |
123f5f96 | 332 | |
2d28509a | 333 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 334 | end up trying to write the register values back out to the |
2d28509a | 335 | target. */ |
ef79d9a3 | 336 | gdb_assert (m_readonly_p); |
2d28509a | 337 | /* Clear the dest. */ |
ef79d9a3 YQ |
338 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
339 | memset (m_register_status, 0, m_descr->sizeof_cooked_register_status); | |
2d28509a | 340 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
341 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
342 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 343 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 344 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
345 | { |
346 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
347 | { | |
50d6adef AH |
348 | gdb_byte *dst_buf = register_buffer (regnum); |
349 | enum register_status status = cooked_read (src, regnum, dst_buf); | |
123f5f96 | 350 | |
50d6adef AH |
351 | gdb_assert (status != REG_UNKNOWN); |
352 | ||
353 | if (status != REG_VALID) | |
354 | memset (dst_buf, 0, register_size (gdbarch, regnum)); | |
05d1431c | 355 | |
ef79d9a3 | 356 | m_register_status[regnum] = status; |
2d28509a AC |
357 | } |
358 | } | |
359 | } | |
360 | ||
ef79d9a3 YQ |
361 | void |
362 | regcache::restore (struct regcache *src) | |
2d28509a | 363 | { |
ef79d9a3 | 364 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 365 | int regnum; |
123f5f96 | 366 | |
5602984a AC |
367 | /* The dst had better not be read-only. If it is, the `restore' |
368 | doesn't make much sense. */ | |
ef79d9a3 YQ |
369 | gdb_assert (!m_readonly_p); |
370 | gdb_assert (src->m_readonly_p); | |
2d28509a | 371 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
372 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
373 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 374 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 375 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 376 | { |
5602984a | 377 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 378 | { |
ef79d9a3 YQ |
379 | if (src->m_register_status[regnum] == REG_VALID) |
380 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
381 | } |
382 | } | |
383 | } | |
384 | ||
3fadccb3 AC |
385 | void |
386 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
387 | { | |
3fadccb3 | 388 | gdb_assert (src != NULL && dst != NULL); |
ef79d9a3 | 389 | gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch); |
3fadccb3 | 390 | gdb_assert (src != dst); |
cfb7e58b | 391 | gdb_assert (src->m_readonly_p && !dst->m_readonly_p); |
6c95b8df | 392 | |
cfb7e58b | 393 | dst->restore (src); |
3fadccb3 AC |
394 | } |
395 | ||
396 | struct regcache * | |
397 | regcache_dup (struct regcache *src) | |
398 | { | |
deb1fa3e | 399 | return new regcache (regcache::readonly, *src); |
3fadccb3 AC |
400 | } |
401 | ||
39181896 | 402 | enum register_status |
ee99023e | 403 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
404 | { |
405 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
406 | return regcache->get_register_status (regnum); |
407 | } | |
408 | ||
409 | enum register_status | |
410 | regcache::get_register_status (int regnum) const | |
411 | { | |
6ed7ea50 | 412 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
413 | if (m_readonly_p) |
414 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
6ed7ea50 | 415 | else |
ef79d9a3 | 416 | gdb_assert (regnum < m_descr->nr_raw_registers); |
6ed7ea50 | 417 | |
ef79d9a3 | 418 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
419 | } |
420 | ||
9c5ea4d9 UW |
421 | void |
422 | regcache_invalidate (struct regcache *regcache, int regnum) | |
423 | { | |
424 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 425 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
426 | } |
427 | ||
ef79d9a3 YQ |
428 | void |
429 | regcache::invalidate (int regnum) | |
430 | { | |
431 | gdb_assert (regnum >= 0); | |
432 | gdb_assert (!m_readonly_p); | |
433 | gdb_assert (regnum < m_descr->nr_raw_registers); | |
434 | m_register_status[regnum] = REG_UNKNOWN; | |
435 | } | |
9c5ea4d9 | 436 | |
3fadccb3 | 437 | /* Global structure containing the current regcache. */ |
3fadccb3 | 438 | |
5ebd2499 | 439 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
440 | recording if the register values have been changed (eg. by the |
441 | user). Therefore all registers must be written back to the | |
442 | target when appropriate. */ | |
e521e87e | 443 | std::forward_list<regcache *> regcache::current_regcache; |
c2250ad1 UW |
444 | |
445 | struct regcache * | |
e2d96639 YQ |
446 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
447 | struct address_space *aspace) | |
c2250ad1 | 448 | { |
e521e87e | 449 | for (const auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
450 | if (ptid_equal (regcache->ptid (), ptid) && regcache->arch () == gdbarch) |
451 | return regcache; | |
594f7785 | 452 | |
94bb8dfe | 453 | regcache *new_regcache = new regcache (gdbarch, aspace, false); |
594f7785 | 454 | |
e521e87e | 455 | regcache::current_regcache.push_front (new_regcache); |
ef79d9a3 | 456 | new_regcache->set_ptid (ptid); |
e2d96639 | 457 | |
e2d96639 YQ |
458 | return new_regcache; |
459 | } | |
460 | ||
461 | struct regcache * | |
462 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
463 | { | |
464 | struct address_space *aspace; | |
465 | ||
b78974c3 PA |
466 | /* For the benefit of "maint print registers" & co when debugging an |
467 | executable, allow dumping the regcache even when there is no | |
468 | thread selected (target_thread_address_space internal-errors if | |
469 | no address space is found). Note that normal user commands will | |
470 | fail higher up on the call stack due to no | |
471 | target_has_registers. */ | |
472 | aspace = (ptid_equal (null_ptid, ptid) | |
473 | ? NULL | |
474 | : target_thread_address_space (ptid)); | |
475 | ||
e2d96639 | 476 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
477 | } |
478 | ||
c2250ad1 UW |
479 | static ptid_t current_thread_ptid; |
480 | static struct gdbarch *current_thread_arch; | |
481 | ||
482 | struct regcache * | |
483 | get_thread_regcache (ptid_t ptid) | |
484 | { | |
485 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
486 | { | |
487 | current_thread_ptid = ptid; | |
488 | current_thread_arch = target_thread_architecture (ptid); | |
489 | } | |
490 | ||
491 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
492 | } | |
493 | ||
494 | struct regcache * | |
495 | get_current_regcache (void) | |
594f7785 UW |
496 | { |
497 | return get_thread_regcache (inferior_ptid); | |
498 | } | |
32178cab | 499 | |
361c8ade GB |
500 | /* See common/common-regcache.h. */ |
501 | ||
502 | struct regcache * | |
503 | get_thread_regcache_for_ptid (ptid_t ptid) | |
504 | { | |
505 | return get_thread_regcache (ptid); | |
506 | } | |
32178cab | 507 | |
f4c5303c OF |
508 | /* Observer for the target_changed event. */ |
509 | ||
2c0b251b | 510 | static void |
f4c5303c OF |
511 | regcache_observer_target_changed (struct target_ops *target) |
512 | { | |
513 | registers_changed (); | |
514 | } | |
515 | ||
5231c1fd PA |
516 | /* Update global variables old ptids to hold NEW_PTID if they were |
517 | holding OLD_PTID. */ | |
e521e87e YQ |
518 | void |
519 | regcache::regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
5231c1fd | 520 | { |
e521e87e | 521 | for (auto ®cache : regcache::current_regcache) |
94bb8dfe YQ |
522 | { |
523 | if (ptid_equal (regcache->ptid (), old_ptid)) | |
524 | regcache->set_ptid (new_ptid); | |
525 | } | |
5231c1fd PA |
526 | } |
527 | ||
32178cab MS |
528 | /* Low level examining and depositing of registers. |
529 | ||
530 | The caller is responsible for making sure that the inferior is | |
531 | stopped before calling the fetching routines, or it will get | |
532 | garbage. (a change from GDB version 3, in which the caller got the | |
533 | value from the last stop). */ | |
534 | ||
535 | /* REGISTERS_CHANGED () | |
536 | ||
537 | Indicate that registers may have changed, so invalidate the cache. */ | |
538 | ||
539 | void | |
e66408ed | 540 | registers_changed_ptid (ptid_t ptid) |
32178cab | 541 | { |
e521e87e | 542 | for (auto oit = regcache::current_regcache.before_begin (), |
94bb8dfe | 543 | it = std::next (oit); |
e521e87e | 544 | it != regcache::current_regcache.end (); |
94bb8dfe | 545 | ) |
c2250ad1 | 546 | { |
94bb8dfe | 547 | if (ptid_match ((*it)->ptid (), ptid)) |
e66408ed | 548 | { |
94bb8dfe | 549 | delete *it; |
e521e87e | 550 | it = regcache::current_regcache.erase_after (oit); |
e66408ed | 551 | } |
94bb8dfe YQ |
552 | else |
553 | oit = it++; | |
c2250ad1 | 554 | } |
32178cab | 555 | |
c34fd852 | 556 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
557 | { |
558 | current_thread_ptid = null_ptid; | |
559 | current_thread_arch = NULL; | |
560 | } | |
32178cab | 561 | |
c34fd852 | 562 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
563 | { |
564 | /* We just deleted the regcache of the current thread. Need to | |
565 | forget about any frames we have cached, too. */ | |
566 | reinit_frame_cache (); | |
567 | } | |
568 | } | |
c2250ad1 | 569 | |
041274d8 PA |
570 | void |
571 | registers_changed (void) | |
572 | { | |
573 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 574 | |
32178cab MS |
575 | /* Force cleanup of any alloca areas if using C alloca instead of |
576 | a builtin alloca. This particular call is used to clean up | |
577 | areas allocated by low level target code which may build up | |
578 | during lengthy interactions between gdb and the target before | |
579 | gdb gives control to the user (ie watchpoints). */ | |
580 | alloca (0); | |
32178cab MS |
581 | } |
582 | ||
8e368124 AH |
583 | void |
584 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 585 | { |
8e368124 | 586 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
587 | |
588 | regcache->raw_update (regnum); | |
589 | } | |
590 | ||
591 | void | |
592 | regcache::raw_update (int regnum) | |
593 | { | |
594 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
8e368124 | 595 | |
3fadccb3 AC |
596 | /* Make certain that the register cache is up-to-date with respect |
597 | to the current thread. This switching shouldn't be necessary | |
598 | only there is still only one target side register cache. Sigh! | |
599 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 600 | |
ef79d9a3 | 601 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 602 | { |
ef79d9a3 | 603 | target_fetch_registers (this, regnum); |
788c8b10 PA |
604 | |
605 | /* A number of targets can't access the whole set of raw | |
606 | registers (because the debug API provides no means to get at | |
607 | them). */ | |
ef79d9a3 YQ |
608 | if (m_register_status[regnum] == REG_UNKNOWN) |
609 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 610 | } |
8e368124 AH |
611 | } |
612 | ||
613 | enum register_status | |
614 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
615 | { |
616 | return regcache->raw_read (regnum, buf); | |
617 | } | |
618 | ||
619 | enum register_status | |
620 | regcache::raw_read (int regnum, gdb_byte *buf) | |
8e368124 AH |
621 | { |
622 | gdb_assert (buf != NULL); | |
ef79d9a3 | 623 | raw_update (regnum); |
05d1431c | 624 | |
ef79d9a3 YQ |
625 | if (m_register_status[regnum] != REG_VALID) |
626 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 627 | else |
ef79d9a3 YQ |
628 | memcpy (buf, register_buffer (regnum), |
629 | m_descr->sizeof_register[regnum]); | |
05d1431c | 630 | |
ef79d9a3 | 631 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
632 | } |
633 | ||
05d1431c | 634 | enum register_status |
28fc6740 | 635 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
636 | { |
637 | gdb_assert (regcache != NULL); | |
6f98355c | 638 | return regcache->raw_read (regnum, val); |
ef79d9a3 YQ |
639 | } |
640 | ||
6f98355c | 641 | template<typename T, typename> |
ef79d9a3 | 642 | enum register_status |
6f98355c | 643 | regcache::raw_read (int regnum, T *val) |
28fc6740 | 644 | { |
2d522557 | 645 | gdb_byte *buf; |
05d1431c | 646 | enum register_status status; |
123f5f96 | 647 | |
ef79d9a3 YQ |
648 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
649 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
650 | status = raw_read (regnum, buf); | |
05d1431c | 651 | if (status == REG_VALID) |
6f98355c YQ |
652 | *val = extract_integer<T> (buf, |
653 | m_descr->sizeof_register[regnum], | |
654 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
655 | else |
656 | *val = 0; | |
657 | return status; | |
28fc6740 AC |
658 | } |
659 | ||
05d1431c | 660 | enum register_status |
28fc6740 AC |
661 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
662 | ULONGEST *val) | |
ef79d9a3 YQ |
663 | { |
664 | gdb_assert (regcache != NULL); | |
6f98355c | 665 | return regcache->raw_read (regnum, val); |
28fc6740 AC |
666 | } |
667 | ||
c00dcbe9 MK |
668 | void |
669 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
670 | { |
671 | gdb_assert (regcache != NULL); | |
6f98355c | 672 | regcache->raw_write (regnum, val); |
ef79d9a3 YQ |
673 | } |
674 | ||
6f98355c | 675 | template<typename T, typename> |
ef79d9a3 | 676 | void |
6f98355c | 677 | regcache::raw_write (int regnum, T val) |
c00dcbe9 | 678 | { |
7c543f7b | 679 | gdb_byte *buf; |
123f5f96 | 680 | |
ef79d9a3 YQ |
681 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
682 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
683 | store_integer (buf, m_descr->sizeof_register[regnum], |
684 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 685 | raw_write (regnum, buf); |
c00dcbe9 MK |
686 | } |
687 | ||
688 | void | |
689 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
690 | ULONGEST val) | |
ef79d9a3 YQ |
691 | { |
692 | gdb_assert (regcache != NULL); | |
6f98355c | 693 | regcache->raw_write (regnum, val); |
c00dcbe9 MK |
694 | } |
695 | ||
9fd15b2e YQ |
696 | LONGEST |
697 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
698 | { | |
699 | LONGEST value; | |
700 | enum register_status status; | |
701 | ||
702 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
703 | if (status == REG_UNAVAILABLE) | |
704 | throw_error (NOT_AVAILABLE_ERROR, | |
705 | _("Register %d is not available"), regnum); | |
706 | return value; | |
707 | } | |
708 | ||
05d1431c | 709 | enum register_status |
2d522557 | 710 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
711 | { |
712 | return regcache->cooked_read (regnum, buf); | |
713 | } | |
714 | ||
715 | enum register_status | |
716 | regcache::cooked_read (int regnum, gdb_byte *buf) | |
68365089 | 717 | { |
d138e37a | 718 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
719 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
720 | if (regnum < m_descr->nr_raw_registers) | |
721 | return raw_read (regnum, buf); | |
722 | else if (m_readonly_p | |
723 | && m_register_status[regnum] != REG_UNKNOWN) | |
05d1431c PA |
724 | { |
725 | /* Read-only register cache, perhaps the cooked value was | |
726 | cached? */ | |
ef79d9a3 YQ |
727 | if (m_register_status[regnum] == REG_VALID) |
728 | memcpy (buf, register_buffer (regnum), | |
729 | m_descr->sizeof_register[regnum]); | |
05d1431c | 730 | else |
ef79d9a3 | 731 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 732 | |
ef79d9a3 | 733 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 734 | } |
ef79d9a3 | 735 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
736 | { |
737 | struct value *mark, *computed; | |
738 | enum register_status result = REG_VALID; | |
739 | ||
740 | mark = value_mark (); | |
741 | ||
ef79d9a3 YQ |
742 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
743 | this, regnum); | |
3543a589 TT |
744 | if (value_entirely_available (computed)) |
745 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 746 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
747 | else |
748 | { | |
ef79d9a3 | 749 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
750 | result = REG_UNAVAILABLE; |
751 | } | |
752 | ||
753 | value_free_to_mark (mark); | |
754 | ||
755 | return result; | |
756 | } | |
d138e37a | 757 | else |
ef79d9a3 | 758 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 759 | regnum, buf); |
61a0eb5b AC |
760 | } |
761 | ||
3543a589 TT |
762 | struct value * |
763 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
764 | { |
765 | return regcache->cooked_read_value (regnum); | |
766 | } | |
767 | ||
768 | struct value * | |
769 | regcache::cooked_read_value (int regnum) | |
3543a589 TT |
770 | { |
771 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 772 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 773 | |
ef79d9a3 YQ |
774 | if (regnum < m_descr->nr_raw_registers |
775 | || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN) | |
776 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) | |
3543a589 TT |
777 | { |
778 | struct value *result; | |
779 | ||
ef79d9a3 | 780 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
781 | VALUE_LVAL (result) = lval_register; |
782 | VALUE_REGNUM (result) = regnum; | |
783 | ||
784 | /* It is more efficient in general to do this delegation in this | |
785 | direction than in the other one, even though the value-based | |
786 | API is preferred. */ | |
ef79d9a3 YQ |
787 | if (cooked_read (regnum, |
788 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
789 | mark_value_bytes_unavailable (result, 0, |
790 | TYPE_LENGTH (value_type (result))); | |
791 | ||
792 | return result; | |
793 | } | |
794 | else | |
ef79d9a3 YQ |
795 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
796 | this, regnum); | |
3543a589 TT |
797 | } |
798 | ||
05d1431c | 799 | enum register_status |
a378f419 AC |
800 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
801 | LONGEST *val) | |
ef79d9a3 YQ |
802 | { |
803 | gdb_assert (regcache != NULL); | |
6f98355c | 804 | return regcache->cooked_read (regnum, val); |
ef79d9a3 YQ |
805 | } |
806 | ||
6f98355c | 807 | template<typename T, typename> |
ef79d9a3 | 808 | enum register_status |
6f98355c | 809 | regcache::cooked_read (int regnum, T *val) |
a378f419 | 810 | { |
05d1431c | 811 | enum register_status status; |
2d522557 | 812 | gdb_byte *buf; |
123f5f96 | 813 | |
ef79d9a3 YQ |
814 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
815 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
816 | status = cooked_read (regnum, buf); | |
05d1431c | 817 | if (status == REG_VALID) |
6f98355c YQ |
818 | *val = extract_integer<T> (buf, m_descr->sizeof_register[regnum], |
819 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
820 | else |
821 | *val = 0; | |
822 | return status; | |
a378f419 AC |
823 | } |
824 | ||
05d1431c | 825 | enum register_status |
a378f419 AC |
826 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
827 | ULONGEST *val) | |
ef79d9a3 YQ |
828 | { |
829 | gdb_assert (regcache != NULL); | |
6f98355c | 830 | return regcache->cooked_read (regnum, val); |
a378f419 AC |
831 | } |
832 | ||
a66a9c23 AC |
833 | void |
834 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
835 | LONGEST val) | |
ef79d9a3 YQ |
836 | { |
837 | gdb_assert (regcache != NULL); | |
6f98355c | 838 | regcache->cooked_write (regnum, val); |
ef79d9a3 YQ |
839 | } |
840 | ||
6f98355c | 841 | template<typename T, typename> |
ef79d9a3 | 842 | void |
6f98355c | 843 | regcache::cooked_write (int regnum, T val) |
a66a9c23 | 844 | { |
7c543f7b | 845 | gdb_byte *buf; |
123f5f96 | 846 | |
ef79d9a3 YQ |
847 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
848 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
6f98355c YQ |
849 | store_integer (buf, m_descr->sizeof_register[regnum], |
850 | gdbarch_byte_order (m_descr->gdbarch), val); | |
ef79d9a3 | 851 | cooked_write (regnum, buf); |
a66a9c23 AC |
852 | } |
853 | ||
854 | void | |
855 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
856 | ULONGEST val) | |
ef79d9a3 YQ |
857 | { |
858 | gdb_assert (regcache != NULL); | |
6f98355c | 859 | regcache->cooked_write (regnum, val); |
a66a9c23 AC |
860 | } |
861 | ||
20aa2c60 PA |
862 | /* See regcache.h. */ |
863 | ||
864 | void | |
865 | regcache_raw_set_cached_value (struct regcache *regcache, int regnum, | |
866 | const gdb_byte *buf) | |
867 | { | |
ef79d9a3 YQ |
868 | regcache->raw_set_cached_value (regnum, buf); |
869 | } | |
870 | ||
871 | void | |
872 | regcache::raw_set_cached_value (int regnum, const gdb_byte *buf) | |
873 | { | |
874 | memcpy (register_buffer (regnum), buf, | |
875 | m_descr->sizeof_register[regnum]); | |
876 | m_register_status[regnum] = REG_VALID; | |
20aa2c60 PA |
877 | } |
878 | ||
61a0eb5b | 879 | void |
2d522557 AC |
880 | regcache_raw_write (struct regcache *regcache, int regnum, |
881 | const gdb_byte *buf) | |
ef79d9a3 YQ |
882 | { |
883 | gdb_assert (regcache != NULL && buf != NULL); | |
884 | regcache->raw_write (regnum, buf); | |
885 | } | |
886 | ||
887 | void | |
888 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 889 | { |
3e00d44f | 890 | struct cleanup *old_chain; |
594f7785 | 891 | |
ef79d9a3 YQ |
892 | gdb_assert (buf != NULL); |
893 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
894 | gdb_assert (!m_readonly_p); | |
3fadccb3 | 895 | |
3fadccb3 AC |
896 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
897 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 898 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
899 | return; |
900 | ||
3fadccb3 | 901 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 902 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
903 | if (get_register_status (regnum) == REG_VALID |
904 | && (memcmp (register_buffer (regnum), buf, | |
905 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
906 | return; |
907 | ||
ef79d9a3 YQ |
908 | target_prepare_to_store (this); |
909 | raw_set_cached_value (regnum, buf); | |
b94ade42 PL |
910 | |
911 | /* Register a cleanup function for invalidating the register after it is | |
912 | written, in case of a failure. */ | |
ef79d9a3 | 913 | old_chain = make_cleanup_regcache_invalidate (this, regnum); |
b94ade42 | 914 | |
ef79d9a3 | 915 | target_store_registers (this, regnum); |
594f7785 | 916 | |
b94ade42 PL |
917 | /* The target did not throw an error so we can discard invalidating the |
918 | register and restore the cleanup chain to what it was. */ | |
3e00d44f | 919 | discard_cleanups (old_chain); |
61a0eb5b AC |
920 | } |
921 | ||
68365089 | 922 | void |
2d522557 AC |
923 | regcache_cooked_write (struct regcache *regcache, int regnum, |
924 | const gdb_byte *buf) | |
ef79d9a3 YQ |
925 | { |
926 | regcache->cooked_write (regnum, buf); | |
927 | } | |
928 | ||
929 | void | |
930 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 931 | { |
d138e37a | 932 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
933 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
934 | if (regnum < m_descr->nr_raw_registers) | |
935 | raw_write (regnum, buf); | |
d138e37a | 936 | else |
ef79d9a3 | 937 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 938 | regnum, buf); |
61a0eb5b AC |
939 | } |
940 | ||
06c0b04e AC |
941 | /* Perform a partial register transfer using a read, modify, write |
942 | operation. */ | |
943 | ||
944 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
945 | void *buf); | |
946 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
947 | const void *buf); | |
948 | ||
ef79d9a3 YQ |
949 | enum register_status |
950 | regcache::xfer_part (int regnum, int offset, int len, void *in, | |
951 | const void *out, | |
952 | enum register_status (*read) (struct regcache *regcache, | |
953 | int regnum, | |
954 | gdb_byte *buf), | |
955 | void (*write) (struct regcache *regcache, int regnum, | |
956 | const gdb_byte *buf)) | |
957 | { | |
958 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 959 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 960 | |
ef79d9a3 YQ |
961 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
962 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
963 | /* Something to do? */ |
964 | if (offset + len == 0) | |
05d1431c | 965 | return REG_VALID; |
0df8b418 | 966 | /* Read (when needed) ... */ |
06c0b04e AC |
967 | if (in != NULL |
968 | || offset > 0 | |
ef79d9a3 | 969 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 970 | { |
05d1431c PA |
971 | enum register_status status; |
972 | ||
06c0b04e | 973 | gdb_assert (read != NULL); |
ef79d9a3 | 974 | status = read (this, regnum, reg); |
05d1431c PA |
975 | if (status != REG_VALID) |
976 | return status; | |
06c0b04e | 977 | } |
0df8b418 | 978 | /* ... modify ... */ |
06c0b04e AC |
979 | if (in != NULL) |
980 | memcpy (in, reg + offset, len); | |
981 | if (out != NULL) | |
982 | memcpy (reg + offset, out, len); | |
983 | /* ... write (when needed). */ | |
984 | if (out != NULL) | |
985 | { | |
986 | gdb_assert (write != NULL); | |
ef79d9a3 | 987 | write (this, regnum, reg); |
06c0b04e | 988 | } |
05d1431c PA |
989 | |
990 | return REG_VALID; | |
06c0b04e AC |
991 | } |
992 | ||
05d1431c | 993 | enum register_status |
06c0b04e | 994 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 995 | int offset, int len, gdb_byte *buf) |
06c0b04e | 996 | { |
ef79d9a3 YQ |
997 | return regcache->raw_read_part (regnum, offset, len, buf); |
998 | } | |
123f5f96 | 999 | |
ef79d9a3 YQ |
1000 | enum register_status |
1001 | regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1002 | { | |
1003 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1004 | return xfer_part (regnum, offset, len, buf, NULL, | |
1005 | regcache_raw_read, regcache_raw_write); | |
06c0b04e AC |
1006 | } |
1007 | ||
1008 | void | |
1009 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1010 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1011 | { |
ef79d9a3 YQ |
1012 | regcache->raw_write_part (regnum, offset, len, buf); |
1013 | } | |
123f5f96 | 1014 | |
ef79d9a3 YQ |
1015 | void |
1016 | regcache::raw_write_part (int regnum, int offset, int len, | |
1017 | const gdb_byte *buf) | |
1018 | { | |
1019 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1020 | xfer_part (regnum, offset, len, NULL, buf, regcache_raw_read, | |
1021 | regcache_raw_write); | |
06c0b04e AC |
1022 | } |
1023 | ||
05d1431c | 1024 | enum register_status |
06c0b04e | 1025 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 1026 | int offset, int len, gdb_byte *buf) |
06c0b04e | 1027 | { |
ef79d9a3 YQ |
1028 | return regcache->cooked_read_part (regnum, offset, len, buf); |
1029 | } | |
123f5f96 | 1030 | |
ef79d9a3 YQ |
1031 | |
1032 | enum register_status | |
1033 | regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1034 | { | |
1035 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1036 | return xfer_part (regnum, offset, len, buf, NULL, | |
1037 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e AC |
1038 | } |
1039 | ||
1040 | void | |
1041 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1042 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1043 | { |
ef79d9a3 YQ |
1044 | regcache->cooked_write_part (regnum, offset, len, buf); |
1045 | } | |
123f5f96 | 1046 | |
ef79d9a3 YQ |
1047 | void |
1048 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1049 | const gdb_byte *buf) | |
1050 | { | |
1051 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1052 | xfer_part (regnum, offset, len, NULL, buf, | |
1053 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e | 1054 | } |
32178cab | 1055 | |
a16d75cc | 1056 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1057 | |
1058 | void | |
6618125d | 1059 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
1060 | { |
1061 | gdb_assert (regcache != NULL); | |
1062 | regcache->raw_supply (regnum, buf); | |
1063 | } | |
1064 | ||
1065 | void | |
1066 | regcache::raw_supply (int regnum, const void *buf) | |
9a661b68 MK |
1067 | { |
1068 | void *regbuf; | |
1069 | size_t size; | |
1070 | ||
ef79d9a3 YQ |
1071 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
1072 | gdb_assert (!m_readonly_p); | |
9a661b68 | 1073 | |
ef79d9a3 YQ |
1074 | regbuf = register_buffer (regnum); |
1075 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1076 | |
1077 | if (buf) | |
ee99023e PA |
1078 | { |
1079 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1080 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1081 | } |
9a661b68 | 1082 | else |
ee99023e PA |
1083 | { |
1084 | /* This memset not strictly necessary, but better than garbage | |
1085 | in case the register value manages to escape somewhere (due | |
1086 | to a bug, no less). */ | |
1087 | memset (regbuf, 0, size); | |
ef79d9a3 | 1088 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1089 | } |
9a661b68 MK |
1090 | } |
1091 | ||
b057297a AH |
1092 | /* Supply register REGNUM to REGCACHE. Value to supply is an integer stored at |
1093 | address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. If | |
1094 | the register size is greater than ADDR_LEN, then the integer will be sign or | |
1095 | zero extended. If the register size is smaller than the integer, then the | |
1096 | most significant bytes of the integer will be truncated. */ | |
1097 | ||
1098 | void | |
1099 | regcache::raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len, | |
1100 | bool is_signed) | |
1101 | { | |
1102 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1103 | gdb_byte *regbuf; | |
1104 | size_t regsize; | |
1105 | ||
1106 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1107 | gdb_assert (!m_readonly_p); | |
1108 | ||
1109 | regbuf = register_buffer (regnum); | |
1110 | regsize = m_descr->sizeof_register[regnum]; | |
1111 | ||
1112 | copy_integer_to_size (regbuf, regsize, addr, addr_len, is_signed, | |
1113 | byte_order); | |
1114 | m_register_status[regnum] = REG_VALID; | |
1115 | } | |
1116 | ||
f81fdd35 AH |
1117 | /* Supply register REGNUM with zeroed value to REGCACHE. This is not the same |
1118 | as calling raw_supply with NULL (which will set the state to | |
1119 | unavailable). */ | |
1120 | ||
1121 | void | |
1122 | regcache::raw_supply_zeroed (int regnum) | |
1123 | { | |
1124 | void *regbuf; | |
1125 | size_t size; | |
1126 | ||
1127 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1128 | gdb_assert (!m_readonly_p); | |
1129 | ||
1130 | regbuf = register_buffer (regnum); | |
1131 | size = m_descr->sizeof_register[regnum]; | |
1132 | ||
1133 | memset (regbuf, 0, size); | |
1134 | m_register_status[regnum] = REG_VALID; | |
1135 | } | |
1136 | ||
9a661b68 MK |
1137 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ |
1138 | ||
1139 | void | |
6618125d | 1140 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1141 | { |
1142 | gdb_assert (regcache != NULL && buf != NULL); | |
1143 | regcache->raw_collect (regnum, buf); | |
1144 | } | |
1145 | ||
1146 | void | |
1147 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1148 | { |
1149 | const void *regbuf; | |
1150 | size_t size; | |
1151 | ||
ef79d9a3 YQ |
1152 | gdb_assert (buf != NULL); |
1153 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
9a661b68 | 1154 | |
ef79d9a3 YQ |
1155 | regbuf = register_buffer (regnum); |
1156 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1157 | memcpy (buf, regbuf, size); |
1158 | } | |
1159 | ||
0b309272 AA |
1160 | /* Transfer a single or all registers belonging to a certain register |
1161 | set to or from a buffer. This is the main worker function for | |
1162 | regcache_supply_regset and regcache_collect_regset. */ | |
1163 | ||
b057297a AH |
1164 | /* Collect register REGNUM from REGCACHE. Store collected value as an integer |
1165 | at address ADDR, in target endian, with length ADDR_LEN and sign IS_SIGNED. | |
1166 | If ADDR_LEN is greater than the register size, then the integer will be sign | |
1167 | or zero extended. If ADDR_LEN is smaller than the register size, then the | |
1168 | most significant bytes of the integer will be truncated. */ | |
1169 | ||
1170 | void | |
1171 | regcache::raw_collect_integer (int regnum, gdb_byte *addr, int addr_len, | |
1172 | bool is_signed) const | |
1173 | { | |
1174 | enum bfd_endian byte_order = gdbarch_byte_order (m_descr->gdbarch); | |
1175 | const gdb_byte *regbuf; | |
1176 | size_t regsize; | |
1177 | ||
1178 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1179 | ||
1180 | regbuf = register_buffer (regnum); | |
1181 | regsize = m_descr->sizeof_register[regnum]; | |
1182 | ||
1183 | copy_integer_to_size (addr, addr_len, regbuf, regsize, is_signed, | |
1184 | byte_order); | |
1185 | } | |
1186 | ||
ef79d9a3 YQ |
1187 | void |
1188 | regcache::transfer_regset (const struct regset *regset, | |
1189 | struct regcache *out_regcache, | |
1190 | int regnum, const void *in_buf, | |
1191 | void *out_buf, size_t size) const | |
0b309272 AA |
1192 | { |
1193 | const struct regcache_map_entry *map; | |
1194 | int offs = 0, count; | |
1195 | ||
19ba03f4 SM |
1196 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1197 | (count = map->count) != 0; | |
1198 | map++) | |
0b309272 AA |
1199 | { |
1200 | int regno = map->regno; | |
1201 | int slot_size = map->size; | |
1202 | ||
1203 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1204 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1205 | |
1206 | if (regno == REGCACHE_MAP_SKIP | |
1207 | || (regnum != -1 | |
1208 | && (regnum < regno || regnum >= regno + count))) | |
1209 | offs += count * slot_size; | |
1210 | ||
1211 | else if (regnum == -1) | |
1212 | for (; count--; regno++, offs += slot_size) | |
1213 | { | |
1214 | if (offs + slot_size > size) | |
1215 | break; | |
1216 | ||
1217 | if (out_buf) | |
ef79d9a3 | 1218 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1219 | else |
ef79d9a3 YQ |
1220 | out_regcache->raw_supply (regno, in_buf |
1221 | ? (const gdb_byte *) in_buf + offs | |
1222 | : NULL); | |
0b309272 AA |
1223 | } |
1224 | else | |
1225 | { | |
1226 | /* Transfer a single register and return. */ | |
1227 | offs += (regnum - regno) * slot_size; | |
1228 | if (offs + slot_size > size) | |
1229 | return; | |
1230 | ||
1231 | if (out_buf) | |
ef79d9a3 | 1232 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1233 | else |
ef79d9a3 YQ |
1234 | out_regcache->raw_supply (regnum, in_buf |
1235 | ? (const gdb_byte *) in_buf + offs | |
1236 | : NULL); | |
0b309272 AA |
1237 | return; |
1238 | } | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1243 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1244 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1245 | ||
1246 | void | |
1247 | regcache_supply_regset (const struct regset *regset, | |
1248 | struct regcache *regcache, | |
1249 | int regnum, const void *buf, size_t size) | |
1250 | { | |
ef79d9a3 YQ |
1251 | regcache->supply_regset (regset, regnum, buf, size); |
1252 | } | |
1253 | ||
1254 | void | |
1255 | regcache::supply_regset (const struct regset *regset, | |
1256 | int regnum, const void *buf, size_t size) | |
1257 | { | |
1258 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1259 | } |
1260 | ||
1261 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1262 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1263 | REGSET. */ | |
1264 | ||
1265 | void | |
1266 | regcache_collect_regset (const struct regset *regset, | |
1267 | const struct regcache *regcache, | |
1268 | int regnum, void *buf, size_t size) | |
1269 | { | |
ef79d9a3 YQ |
1270 | regcache->collect_regset (regset, regnum, buf, size); |
1271 | } | |
1272 | ||
1273 | void | |
1274 | regcache::collect_regset (const struct regset *regset, | |
1275 | int regnum, void *buf, size_t size) const | |
1276 | { | |
1277 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1278 | } |
1279 | ||
193cb69f | 1280 | |
515630c5 | 1281 | /* Special handling for register PC. */ |
32178cab MS |
1282 | |
1283 | CORE_ADDR | |
515630c5 | 1284 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1285 | { |
61a1198a UW |
1286 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1287 | ||
32178cab MS |
1288 | CORE_ADDR pc_val; |
1289 | ||
61a1198a UW |
1290 | if (gdbarch_read_pc_p (gdbarch)) |
1291 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1292 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1293 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1294 | { |
61a1198a | 1295 | ULONGEST raw_val; |
123f5f96 | 1296 | |
05d1431c PA |
1297 | if (regcache_cooked_read_unsigned (regcache, |
1298 | gdbarch_pc_regnum (gdbarch), | |
1299 | &raw_val) == REG_UNAVAILABLE) | |
1300 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1301 | ||
214e098a | 1302 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1303 | } |
1304 | else | |
515630c5 UW |
1305 | internal_error (__FILE__, __LINE__, |
1306 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1307 | return pc_val; |
1308 | } | |
1309 | ||
32178cab | 1310 | void |
515630c5 | 1311 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1312 | { |
61a1198a UW |
1313 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1314 | ||
61a1198a UW |
1315 | if (gdbarch_write_pc_p (gdbarch)) |
1316 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1317 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1318 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1319 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1320 | else |
1321 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1322 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1323 | |
1324 | /* Writing the PC (for instance, from "load") invalidates the | |
1325 | current frame. */ | |
1326 | reinit_frame_cache (); | |
32178cab MS |
1327 | } |
1328 | ||
ed771251 | 1329 | void |
ef79d9a3 | 1330 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1331 | { |
ef79d9a3 | 1332 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1333 | |
1334 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1335 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1336 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1337 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1338 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1339 | gdbarch_register_name (gdbarch, regno)); | |
1340 | else | |
1341 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1342 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1343 | { | |
1344 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1345 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1346 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1347 | |
1348 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1349 | for (int i = 0; i < size; i++) | |
1350 | { | |
1351 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1352 | } | |
1353 | if (size <= sizeof (LONGEST)) | |
1354 | { | |
1355 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1356 | ||
1357 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1358 | core_addr_to_string_nz (val), plongest (val)); | |
1359 | } | |
1360 | } | |
1361 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1362 | } | |
32178cab | 1363 | |
705152c5 MS |
1364 | static void |
1365 | reg_flush_command (char *command, int from_tty) | |
1366 | { | |
1367 | /* Force-flush the register cache. */ | |
1368 | registers_changed (); | |
1369 | if (from_tty) | |
a3f17187 | 1370 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1371 | } |
1372 | ||
ef79d9a3 YQ |
1373 | void |
1374 | regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump) | |
af030b9a AC |
1375 | { |
1376 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
ef79d9a3 | 1377 | struct gdbarch *gdbarch = m_descr->gdbarch; |
af030b9a AC |
1378 | int regnum; |
1379 | int footnote_nr = 0; | |
1380 | int footnote_register_size = 0; | |
1381 | int footnote_register_offset = 0; | |
1382 | int footnote_register_type_name_null = 0; | |
1383 | long register_offset = 0; | |
af030b9a AC |
1384 | |
1385 | #if 0 | |
af030b9a | 1386 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
ef79d9a3 | 1387 | m_descr->nr_raw_registers); |
af030b9a | 1388 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", |
ef79d9a3 | 1389 | m_descr->nr_cooked_registers); |
af030b9a | 1390 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", |
ef79d9a3 | 1391 | m_descr->sizeof_raw_registers); |
ee99023e | 1392 | fprintf_unfiltered (file, "sizeof_raw_register_status %ld\n", |
ef79d9a3 | 1393 | m_descr->sizeof_raw_register_status); |
f57d151a | 1394 | fprintf_unfiltered (file, "gdbarch_num_regs %d\n", |
214e098a | 1395 | gdbarch_num_regs (gdbarch)); |
f57d151a | 1396 | fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n", |
214e098a | 1397 | gdbarch_num_pseudo_regs (gdbarch)); |
af030b9a AC |
1398 | #endif |
1399 | ||
ef79d9a3 | 1400 | gdb_assert (m_descr->nr_cooked_registers |
214e098a UW |
1401 | == (gdbarch_num_regs (gdbarch) |
1402 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a | 1403 | |
ef79d9a3 | 1404 | for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++) |
af030b9a AC |
1405 | { |
1406 | /* Name. */ | |
1407 | if (regnum < 0) | |
1408 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1409 | else | |
1410 | { | |
214e098a | 1411 | const char *p = gdbarch_register_name (gdbarch, regnum); |
123f5f96 | 1412 | |
af030b9a AC |
1413 | if (p == NULL) |
1414 | p = ""; | |
1415 | else if (p[0] == '\0') | |
1416 | p = "''"; | |
1417 | fprintf_unfiltered (file, " %-10s", p); | |
1418 | } | |
1419 | ||
1420 | /* Number. */ | |
1421 | if (regnum < 0) | |
1422 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1423 | else | |
1424 | fprintf_unfiltered (file, " %4d", regnum); | |
1425 | ||
1426 | /* Relative number. */ | |
1427 | if (regnum < 0) | |
1428 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 1429 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
1430 | fprintf_unfiltered (file, " %4d", regnum); |
1431 | else | |
f57d151a | 1432 | fprintf_unfiltered (file, " %4d", |
214e098a | 1433 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
1434 | |
1435 | /* Offset. */ | |
1436 | if (regnum < 0) | |
1437 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1438 | else | |
1439 | { | |
1440 | fprintf_unfiltered (file, " %6ld", | |
ef79d9a3 YQ |
1441 | m_descr->register_offset[regnum]); |
1442 | if (register_offset != m_descr->register_offset[regnum] | |
d3b22ed5 | 1443 | || (regnum > 0 |
ef79d9a3 YQ |
1444 | && (m_descr->register_offset[regnum] |
1445 | != (m_descr->register_offset[regnum - 1] | |
1446 | + m_descr->sizeof_register[regnum - 1]))) | |
d3b22ed5 | 1447 | ) |
af030b9a AC |
1448 | { |
1449 | if (!footnote_register_offset) | |
1450 | footnote_register_offset = ++footnote_nr; | |
1451 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1452 | } | |
1453 | else | |
1454 | fprintf_unfiltered (file, " "); | |
ef79d9a3 YQ |
1455 | register_offset = (m_descr->register_offset[regnum] |
1456 | + m_descr->sizeof_register[regnum]); | |
af030b9a AC |
1457 | } |
1458 | ||
1459 | /* Size. */ | |
1460 | if (regnum < 0) | |
1461 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1462 | else | |
ef79d9a3 | 1463 | fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]); |
af030b9a AC |
1464 | |
1465 | /* Type. */ | |
b59ff9d5 AC |
1466 | { |
1467 | const char *t; | |
123f5f96 | 1468 | |
b59ff9d5 AC |
1469 | if (regnum < 0) |
1470 | t = "Type"; | |
1471 | else | |
1472 | { | |
1473 | static const char blt[] = "builtin_type"; | |
123f5f96 | 1474 | |
ef79d9a3 | 1475 | t = TYPE_NAME (register_type (arch (), regnum)); |
b59ff9d5 AC |
1476 | if (t == NULL) |
1477 | { | |
1478 | char *n; | |
123f5f96 | 1479 | |
b59ff9d5 AC |
1480 | if (!footnote_register_type_name_null) |
1481 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1482 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1483 | make_cleanup (xfree, n); |
1484 | t = n; | |
1485 | } | |
1486 | /* Chop a leading builtin_type. */ | |
61012eef | 1487 | if (startswith (t, blt)) |
b59ff9d5 AC |
1488 | t += strlen (blt); |
1489 | } | |
1490 | fprintf_unfiltered (file, " %-15s", t); | |
1491 | } | |
1492 | ||
1493 | /* Leading space always present. */ | |
1494 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1495 | |
1496 | /* Value, raw. */ | |
1497 | if (what_to_dump == regcache_dump_raw) | |
1498 | { | |
1499 | if (regnum < 0) | |
1500 | fprintf_unfiltered (file, "Raw value"); | |
ef79d9a3 | 1501 | else if (regnum >= m_descr->nr_raw_registers) |
af030b9a | 1502 | fprintf_unfiltered (file, "<cooked>"); |
ef79d9a3 | 1503 | else if (get_register_status (regnum) == REG_UNKNOWN) |
af030b9a | 1504 | fprintf_unfiltered (file, "<invalid>"); |
ef79d9a3 | 1505 | else if (get_register_status (regnum) == REG_UNAVAILABLE) |
ee99023e | 1506 | fprintf_unfiltered (file, "<unavailable>"); |
af030b9a AC |
1507 | else |
1508 | { | |
50d6adef AH |
1509 | raw_update (regnum); |
1510 | print_hex_chars (file, register_buffer (regnum), | |
ef79d9a3 | 1511 | m_descr->sizeof_register[regnum], |
30a25466 | 1512 | gdbarch_byte_order (gdbarch), true); |
af030b9a AC |
1513 | } |
1514 | } | |
1515 | ||
1516 | /* Value, cooked. */ | |
1517 | if (what_to_dump == regcache_dump_cooked) | |
1518 | { | |
1519 | if (regnum < 0) | |
1520 | fprintf_unfiltered (file, "Cooked value"); | |
1521 | else | |
1522 | { | |
50d6adef | 1523 | const gdb_byte *buf = NULL; |
05d1431c | 1524 | enum register_status status; |
50d6adef AH |
1525 | struct value *value = NULL; |
1526 | ||
1527 | if (regnum < m_descr->nr_raw_registers) | |
1528 | { | |
1529 | raw_update (regnum); | |
1530 | status = get_register_status (regnum); | |
1531 | buf = register_buffer (regnum); | |
1532 | } | |
1533 | else | |
1534 | { | |
1535 | value = cooked_read_value (regnum); | |
1536 | ||
1537 | if (!value_optimized_out (value) | |
1538 | && value_entirely_available (value)) | |
1539 | { | |
1540 | status = REG_VALID; | |
1541 | buf = value_contents_all (value); | |
1542 | } | |
1543 | else | |
1544 | status = REG_UNAVAILABLE; | |
1545 | } | |
05d1431c | 1546 | |
05d1431c PA |
1547 | if (status == REG_UNKNOWN) |
1548 | fprintf_unfiltered (file, "<invalid>"); | |
1549 | else if (status == REG_UNAVAILABLE) | |
1550 | fprintf_unfiltered (file, "<unavailable>"); | |
1551 | else | |
d3eaaf66 | 1552 | print_hex_chars (file, buf, |
ef79d9a3 | 1553 | m_descr->sizeof_register[regnum], |
30a25466 | 1554 | gdbarch_byte_order (gdbarch), true); |
50d6adef AH |
1555 | |
1556 | if (value != NULL) | |
1557 | { | |
1558 | release_value (value); | |
1559 | value_free (value); | |
1560 | } | |
af030b9a AC |
1561 | } |
1562 | } | |
1563 | ||
b59ff9d5 AC |
1564 | /* Group members. */ |
1565 | if (what_to_dump == regcache_dump_groups) | |
1566 | { | |
1567 | if (regnum < 0) | |
1568 | fprintf_unfiltered (file, "Groups"); | |
1569 | else | |
1570 | { | |
b59ff9d5 | 1571 | const char *sep = ""; |
6c7d17ba | 1572 | struct reggroup *group; |
123f5f96 | 1573 | |
6c7d17ba AC |
1574 | for (group = reggroup_next (gdbarch, NULL); |
1575 | group != NULL; | |
1576 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1577 | { |
6c7d17ba | 1578 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1579 | { |
3e43a32a MS |
1580 | fprintf_unfiltered (file, |
1581 | "%s%s", sep, reggroup_name (group)); | |
b59ff9d5 AC |
1582 | sep = ","; |
1583 | } | |
1584 | } | |
1585 | } | |
1586 | } | |
1587 | ||
c21236dc PA |
1588 | /* Remote packet configuration. */ |
1589 | if (what_to_dump == regcache_dump_remote) | |
1590 | { | |
1591 | if (regnum < 0) | |
1592 | { | |
1593 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1594 | } | |
ef79d9a3 | 1595 | else if (regnum < m_descr->nr_raw_registers) |
c21236dc PA |
1596 | { |
1597 | int pnum, poffset; | |
1598 | ||
ef79d9a3 | 1599 | if (remote_register_number_and_offset (arch (), regnum, |
c21236dc PA |
1600 | &pnum, &poffset)) |
1601 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1602 | } | |
1603 | } | |
1604 | ||
af030b9a AC |
1605 | fprintf_unfiltered (file, "\n"); |
1606 | } | |
1607 | ||
1608 | if (footnote_register_size) | |
1609 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1610 | footnote_register_size); | |
1611 | if (footnote_register_offset) | |
1612 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1613 | footnote_register_offset); | |
1614 | if (footnote_register_type_name_null) | |
1615 | fprintf_unfiltered (file, | |
1616 | "*%d: Register type's name NULL.\n", | |
1617 | footnote_register_type_name_null); | |
1618 | do_cleanups (cleanups); | |
1619 | } | |
1620 | ||
1621 | static void | |
1622 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1623 | { | |
1624 | if (args == NULL) | |
ef79d9a3 | 1625 | get_current_regcache ()->dump (gdb_stdout, what_to_dump); |
af030b9a AC |
1626 | else |
1627 | { | |
d7e74731 | 1628 | stdio_file file; |
123f5f96 | 1629 | |
d7e74731 | 1630 | if (!file.open (args, "w")) |
e2e0b3e5 | 1631 | perror_with_name (_("maintenance print architecture")); |
ef79d9a3 | 1632 | get_current_regcache ()->dump (&file, what_to_dump); |
af030b9a AC |
1633 | } |
1634 | } | |
1635 | ||
1636 | static void | |
1637 | maintenance_print_registers (char *args, int from_tty) | |
1638 | { | |
1639 | regcache_print (args, regcache_dump_none); | |
1640 | } | |
1641 | ||
1642 | static void | |
1643 | maintenance_print_raw_registers (char *args, int from_tty) | |
1644 | { | |
1645 | regcache_print (args, regcache_dump_raw); | |
1646 | } | |
1647 | ||
1648 | static void | |
1649 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1650 | { | |
1651 | regcache_print (args, regcache_dump_cooked); | |
1652 | } | |
1653 | ||
b59ff9d5 AC |
1654 | static void |
1655 | maintenance_print_register_groups (char *args, int from_tty) | |
1656 | { | |
1657 | regcache_print (args, regcache_dump_groups); | |
1658 | } | |
1659 | ||
c21236dc PA |
1660 | static void |
1661 | maintenance_print_remote_registers (char *args, int from_tty) | |
1662 | { | |
1663 | regcache_print (args, regcache_dump_remote); | |
1664 | } | |
1665 | ||
8248946c YQ |
1666 | #if GDB_SELF_TEST |
1667 | #include "selftest.h" | |
1668 | ||
1669 | namespace selftests { | |
1670 | ||
e521e87e | 1671 | class regcache_access : public regcache |
8248946c | 1672 | { |
e521e87e YQ |
1673 | public: |
1674 | ||
1675 | /* Return the number of elements in current_regcache. */ | |
1676 | ||
1677 | static size_t | |
1678 | current_regcache_size () | |
1679 | { | |
1680 | return std::distance (regcache::current_regcache.begin (), | |
1681 | regcache::current_regcache.end ()); | |
1682 | } | |
1683 | }; | |
8248946c YQ |
1684 | |
1685 | static void | |
1686 | current_regcache_test (void) | |
1687 | { | |
1688 | /* It is empty at the start. */ | |
e521e87e | 1689 | SELF_CHECK (regcache_access::current_regcache_size () == 0); |
8248946c YQ |
1690 | |
1691 | ptid_t ptid1 (1), ptid2 (2), ptid3 (3); | |
1692 | ||
1693 | /* Get regcache from ptid1, a new regcache is added to | |
1694 | current_regcache. */ | |
1695 | regcache *regcache = get_thread_arch_aspace_regcache (ptid1, | |
1696 | target_gdbarch (), | |
1697 | NULL); | |
1698 | ||
1699 | SELF_CHECK (regcache != NULL); | |
1700 | SELF_CHECK (regcache->ptid () == ptid1); | |
e521e87e | 1701 | SELF_CHECK (regcache_access::current_regcache_size () == 1); |
8248946c YQ |
1702 | |
1703 | /* Get regcache from ptid2, a new regcache is added to | |
1704 | current_regcache. */ | |
1705 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1706 | target_gdbarch (), | |
1707 | NULL); | |
1708 | SELF_CHECK (regcache != NULL); | |
1709 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1710 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1711 | |
1712 | /* Get regcache from ptid3, a new regcache is added to | |
1713 | current_regcache. */ | |
1714 | regcache = get_thread_arch_aspace_regcache (ptid3, | |
1715 | target_gdbarch (), | |
1716 | NULL); | |
1717 | SELF_CHECK (regcache != NULL); | |
1718 | SELF_CHECK (regcache->ptid () == ptid3); | |
e521e87e | 1719 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1720 | |
1721 | /* Get regcache from ptid2 again, nothing is added to | |
1722 | current_regcache. */ | |
1723 | regcache = get_thread_arch_aspace_regcache (ptid2, | |
1724 | target_gdbarch (), | |
1725 | NULL); | |
1726 | SELF_CHECK (regcache != NULL); | |
1727 | SELF_CHECK (regcache->ptid () == ptid2); | |
e521e87e | 1728 | SELF_CHECK (regcache_access::current_regcache_size () == 3); |
8248946c YQ |
1729 | |
1730 | /* Mark ptid2 is changed, so regcache of ptid2 should be removed from | |
1731 | current_regcache. */ | |
1732 | registers_changed_ptid (ptid2); | |
e521e87e | 1733 | SELF_CHECK (regcache_access::current_regcache_size () == 2); |
8248946c YQ |
1734 | } |
1735 | ||
1736 | } // namespace selftests | |
1737 | #endif /* GDB_SELF_TEST */ | |
1738 | ||
b9362cc7 AC |
1739 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1740 | ||
32178cab MS |
1741 | void |
1742 | _initialize_regcache (void) | |
1743 | { | |
3e43a32a MS |
1744 | regcache_descr_handle |
1745 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1746 | |
f4c5303c | 1747 | observer_attach_target_changed (regcache_observer_target_changed); |
e521e87e | 1748 | observer_attach_thread_ptid_changed (regcache::regcache_thread_ptid_changed); |
f4c5303c | 1749 | |
705152c5 | 1750 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1751 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1752 | |
3e43a32a MS |
1753 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
1754 | _("Print the internal register configuration.\n" | |
1755 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1756 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
1757 | maintenance_print_raw_registers, |
1758 | _("Print the internal register configuration " | |
1759 | "including raw values.\n" | |
1760 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1761 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
1762 | maintenance_print_cooked_registers, |
1763 | _("Print the internal register configuration " | |
1764 | "including cooked values.\n" | |
1765 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1766 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
1767 | maintenance_print_register_groups, |
1768 | _("Print the internal register configuration " | |
1769 | "including each register's group.\n" | |
1770 | "Takes an optional file parameter."), | |
af030b9a | 1771 | &maintenanceprintlist); |
c21236dc PA |
1772 | add_cmd ("remote-registers", class_maintenance, |
1773 | maintenance_print_remote_registers, _("\ | |
1774 | Print the internal register configuration including each register's\n\ | |
1775 | remote register number and buffer offset in the g/G packets.\n\ | |
1776 | Takes an optional file parameter."), | |
1777 | &maintenanceprintlist); | |
8248946c YQ |
1778 | #if GDB_SELF_TEST |
1779 | register_self_test (selftests::current_regcache_test); | |
1780 | #endif | |
32178cab | 1781 | } |