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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" |
32178cab MS |
31 | |
32 | /* | |
33 | * DATA STRUCTURE | |
34 | * | |
35 | * Here is the actual register cache. | |
36 | */ | |
37 | ||
3fadccb3 | 38 | /* Per-architecture object describing the layout of a register cache. |
0df8b418 | 39 | Computed once when the architecture is created. */ |
3fadccb3 AC |
40 | |
41 | struct gdbarch_data *regcache_descr_handle; | |
42 | ||
43 | struct regcache_descr | |
44 | { | |
45 | /* The architecture this descriptor belongs to. */ | |
46 | struct gdbarch *gdbarch; | |
47 | ||
bb1db049 AC |
48 | /* The raw register cache. Each raw (or hard) register is supplied |
49 | by the target interface. The raw cache should not contain | |
50 | redundant information - if the PC is constructed from two | |
d2f0b918 | 51 | registers then those registers and not the PC lives in the raw |
bb1db049 | 52 | cache. */ |
3fadccb3 AC |
53 | int nr_raw_registers; |
54 | long sizeof_raw_registers; | |
ee99023e | 55 | long sizeof_raw_register_status; |
3fadccb3 | 56 | |
d138e37a AC |
57 | /* The cooked register space. Each cooked register in the range |
58 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
59 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 60 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 61 | both raw registers and memory by the architecture methods |
02f60eae | 62 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 63 | int nr_cooked_registers; |
067df2e5 | 64 | long sizeof_cooked_registers; |
ee99023e | 65 | long sizeof_cooked_register_status; |
d138e37a | 66 | |
86d31898 | 67 | /* Offset and size (in 8 bit bytes), of each register in the |
d138e37a | 68 | register cache. All registers (including those in the range |
99e42fd8 PA |
69 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an |
70 | offset. */ | |
3fadccb3 | 71 | long *register_offset; |
3fadccb3 | 72 | long *sizeof_register; |
3fadccb3 | 73 | |
bb425013 AC |
74 | /* Cached table containing the type of each register. */ |
75 | struct type **register_type; | |
3fadccb3 AC |
76 | }; |
77 | ||
3fadccb3 AC |
78 | static void * |
79 | init_regcache_descr (struct gdbarch *gdbarch) | |
80 | { | |
81 | int i; | |
82 | struct regcache_descr *descr; | |
83 | gdb_assert (gdbarch != NULL); | |
84 | ||
bb425013 | 85 | /* Create an initial, zero filled, table. */ |
116f06ea | 86 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 87 | descr->gdbarch = gdbarch; |
3fadccb3 | 88 | |
d138e37a AC |
89 | /* Total size of the register space. The raw registers are mapped |
90 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 91 | either mapped onto raw-registers or memory. */ |
214e098a UW |
92 | descr->nr_cooked_registers = gdbarch_num_regs (gdbarch) |
93 | + gdbarch_num_pseudo_regs (gdbarch); | |
ee99023e PA |
94 | descr->sizeof_cooked_register_status |
95 | = gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch); | |
3fadccb3 | 96 | |
bb425013 | 97 | /* Fill in a table of register types. */ |
116f06ea | 98 | descr->register_type |
3e43a32a MS |
99 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, |
100 | struct type *); | |
bb425013 | 101 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 102 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 103 | |
bb1db049 AC |
104 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
105 | into the register cache. */ | |
214e098a | 106 | descr->nr_raw_registers = gdbarch_num_regs (gdbarch); |
ee99023e | 107 | descr->sizeof_raw_register_status = gdbarch_num_regs (gdbarch); |
bb1db049 | 108 | |
067df2e5 | 109 | /* Lay out the register cache. |
3fadccb3 | 110 | |
bb425013 AC |
111 | NOTE: cagney/2002-05-22: Only register_type() is used when |
112 | constructing the register cache. It is assumed that the | |
113 | register's raw size, virtual size and type length are all the | |
114 | same. */ | |
3fadccb3 AC |
115 | |
116 | { | |
117 | long offset = 0; | |
123f5f96 | 118 | |
116f06ea AC |
119 | descr->sizeof_register |
120 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
121 | descr->register_offset | |
122 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
99e42fd8 PA |
123 | for (i = 0; i < descr->nr_raw_registers; i++) |
124 | { | |
125 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); | |
126 | descr->register_offset[i] = offset; | |
127 | offset += descr->sizeof_register[i]; | |
128 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); | |
129 | } | |
130 | /* Set the real size of the raw register cache buffer. */ | |
131 | descr->sizeof_raw_registers = offset; | |
132 | ||
133 | for (; i < descr->nr_cooked_registers; i++) | |
3fadccb3 | 134 | { |
bb425013 | 135 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
136 | descr->register_offset[i] = offset; |
137 | offset += descr->sizeof_register[i]; | |
123a958e | 138 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 | 139 | } |
99e42fd8 | 140 | /* Set the real size of the readonly register cache buffer. */ |
067df2e5 | 141 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
142 | } |
143 | ||
3fadccb3 AC |
144 | return descr; |
145 | } | |
146 | ||
147 | static struct regcache_descr * | |
148 | regcache_descr (struct gdbarch *gdbarch) | |
149 | { | |
19ba03f4 SM |
150 | return (struct regcache_descr *) gdbarch_data (gdbarch, |
151 | regcache_descr_handle); | |
3fadccb3 AC |
152 | } |
153 | ||
bb425013 AC |
154 | /* Utility functions returning useful register attributes stored in |
155 | the regcache descr. */ | |
156 | ||
157 | struct type * | |
158 | register_type (struct gdbarch *gdbarch, int regnum) | |
159 | { | |
160 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
123f5f96 | 161 | |
bb425013 AC |
162 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); |
163 | return descr->register_type[regnum]; | |
164 | } | |
165 | ||
0ed04cce AC |
166 | /* Utility functions returning useful register attributes stored in |
167 | the regcache descr. */ | |
168 | ||
08a617da AC |
169 | int |
170 | register_size (struct gdbarch *gdbarch, int regnum) | |
171 | { | |
172 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
173 | int size; | |
123f5f96 | 174 | |
f57d151a | 175 | gdb_assert (regnum >= 0 |
214e098a UW |
176 | && regnum < (gdbarch_num_regs (gdbarch) |
177 | + gdbarch_num_pseudo_regs (gdbarch))); | |
08a617da | 178 | size = descr->sizeof_register[regnum]; |
08a617da AC |
179 | return size; |
180 | } | |
181 | ||
8d689ee5 YQ |
182 | /* See common/common-regcache.h. */ |
183 | ||
184 | int | |
185 | regcache_register_size (const struct regcache *regcache, int n) | |
186 | { | |
187 | return register_size (get_regcache_arch (regcache), n); | |
188 | } | |
189 | ||
ef79d9a3 YQ |
190 | regcache::regcache (gdbarch *gdbarch, address_space *aspace_, |
191 | bool readonly_p_) | |
192 | : m_aspace (aspace_), m_readonly_p (readonly_p_) | |
3fadccb3 | 193 | { |
ef79d9a3 YQ |
194 | gdb_assert (gdbarch != NULL); |
195 | m_descr = regcache_descr (gdbarch); | |
4621115f | 196 | |
ef79d9a3 | 197 | if (m_readonly_p) |
4621115f | 198 | { |
ef79d9a3 YQ |
199 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_cooked_registers); |
200 | m_register_status = XCNEWVEC (signed char, | |
201 | m_descr->sizeof_cooked_register_status); | |
4621115f YQ |
202 | } |
203 | else | |
204 | { | |
ef79d9a3 YQ |
205 | m_registers = XCNEWVEC (gdb_byte, m_descr->sizeof_raw_registers); |
206 | m_register_status = XCNEWVEC (signed char, | |
207 | m_descr->sizeof_raw_register_status); | |
4621115f | 208 | } |
ef79d9a3 YQ |
209 | m_ptid = minus_one_ptid; |
210 | } | |
4621115f | 211 | |
ef79d9a3 YQ |
212 | gdbarch * |
213 | regcache::arch () const | |
214 | { | |
215 | return m_descr->gdbarch; | |
216 | } | |
3fadccb3 | 217 | |
ddaaf0fb SM |
218 | /* See regcache.h. */ |
219 | ||
220 | ptid_t | |
221 | regcache_get_ptid (const struct regcache *regcache) | |
222 | { | |
ef79d9a3 | 223 | gdb_assert (!ptid_equal (regcache->ptid (), minus_one_ptid)); |
ddaaf0fb | 224 | |
ef79d9a3 | 225 | return regcache->ptid (); |
ddaaf0fb SM |
226 | } |
227 | ||
99e42fd8 PA |
228 | struct regcache * |
229 | regcache_xmalloc (struct gdbarch *gdbarch, struct address_space *aspace) | |
230 | { | |
4621115f | 231 | return new regcache (gdbarch, aspace); |
99e42fd8 PA |
232 | } |
233 | ||
3fadccb3 AC |
234 | void |
235 | regcache_xfree (struct regcache *regcache) | |
236 | { | |
237 | if (regcache == NULL) | |
238 | return; | |
4621115f YQ |
239 | |
240 | delete regcache; | |
3fadccb3 AC |
241 | } |
242 | ||
b9362cc7 | 243 | static void |
36160dc4 AC |
244 | do_regcache_xfree (void *data) |
245 | { | |
19ba03f4 | 246 | regcache_xfree ((struct regcache *) data); |
36160dc4 AC |
247 | } |
248 | ||
249 | struct cleanup * | |
250 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
251 | { | |
252 | return make_cleanup (do_regcache_xfree, regcache); | |
253 | } | |
254 | ||
b94ade42 PL |
255 | /* Cleanup routines for invalidating a register. */ |
256 | ||
257 | struct register_to_invalidate | |
258 | { | |
259 | struct regcache *regcache; | |
260 | int regnum; | |
261 | }; | |
262 | ||
263 | static void | |
264 | do_regcache_invalidate (void *data) | |
265 | { | |
19ba03f4 | 266 | struct register_to_invalidate *reg = (struct register_to_invalidate *) data; |
b94ade42 PL |
267 | |
268 | regcache_invalidate (reg->regcache, reg->regnum); | |
269 | } | |
270 | ||
271 | static struct cleanup * | |
272 | make_cleanup_regcache_invalidate (struct regcache *regcache, int regnum) | |
273 | { | |
274 | struct register_to_invalidate* reg = XNEW (struct register_to_invalidate); | |
275 | ||
276 | reg->regcache = regcache; | |
277 | reg->regnum = regnum; | |
278 | return make_cleanup_dtor (do_regcache_invalidate, (void *) reg, xfree); | |
279 | } | |
280 | ||
41d35cb0 MK |
281 | /* Return REGCACHE's architecture. */ |
282 | ||
283 | struct gdbarch * | |
284 | get_regcache_arch (const struct regcache *regcache) | |
285 | { | |
ef79d9a3 | 286 | return regcache->arch (); |
41d35cb0 MK |
287 | } |
288 | ||
6c95b8df PA |
289 | struct address_space * |
290 | get_regcache_aspace (const struct regcache *regcache) | |
291 | { | |
ef79d9a3 | 292 | return regcache->aspace (); |
6c95b8df PA |
293 | } |
294 | ||
51b1fe4e AC |
295 | /* Return a pointer to register REGNUM's buffer cache. */ |
296 | ||
ef79d9a3 YQ |
297 | gdb_byte * |
298 | regcache::register_buffer (int regnum) const | |
51b1fe4e | 299 | { |
ef79d9a3 | 300 | return m_registers + m_descr->register_offset[regnum]; |
51b1fe4e AC |
301 | } |
302 | ||
2d28509a | 303 | void |
ef79d9a3 YQ |
304 | regcache_save (struct regcache *regcache, |
305 | regcache_cooked_read_ftype *cooked_read, void *src) | |
2d28509a | 306 | { |
ef79d9a3 YQ |
307 | regcache->save (cooked_read, src); |
308 | } | |
309 | ||
310 | void | |
311 | regcache::save (regcache_cooked_read_ftype *cooked_read, | |
312 | void *src) | |
313 | { | |
314 | struct gdbarch *gdbarch = m_descr->gdbarch; | |
2d522557 | 315 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 316 | int regnum; |
123f5f96 | 317 | |
2d28509a | 318 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 319 | end up trying to write the register values back out to the |
2d28509a | 320 | target. */ |
ef79d9a3 | 321 | gdb_assert (m_readonly_p); |
2d28509a | 322 | /* Clear the dest. */ |
ef79d9a3 YQ |
323 | memset (m_registers, 0, m_descr->sizeof_cooked_registers); |
324 | memset (m_register_status, 0, m_descr->sizeof_cooked_register_status); | |
2d28509a | 325 | /* Copy over any registers (identified by their membership in the |
f57d151a UW |
326 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
327 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 328 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 329 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a AC |
330 | { |
331 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
332 | { | |
05d1431c | 333 | enum register_status status = cooked_read (src, regnum, buf); |
123f5f96 | 334 | |
05d1431c | 335 | if (status == REG_VALID) |
ef79d9a3 | 336 | memcpy (register_buffer (regnum), buf, |
05d1431c PA |
337 | register_size (gdbarch, regnum)); |
338 | else | |
5602984a | 339 | { |
05d1431c PA |
340 | gdb_assert (status != REG_UNKNOWN); |
341 | ||
ef79d9a3 | 342 | memset (register_buffer (regnum), 0, |
5602984a | 343 | register_size (gdbarch, regnum)); |
5602984a | 344 | } |
ef79d9a3 | 345 | m_register_status[regnum] = status; |
2d28509a AC |
346 | } |
347 | } | |
348 | } | |
349 | ||
ef79d9a3 YQ |
350 | void |
351 | regcache::restore (struct regcache *src) | |
2d28509a | 352 | { |
ef79d9a3 | 353 | struct gdbarch *gdbarch = m_descr->gdbarch; |
2d28509a | 354 | int regnum; |
123f5f96 | 355 | |
5602984a AC |
356 | /* The dst had better not be read-only. If it is, the `restore' |
357 | doesn't make much sense. */ | |
ef79d9a3 YQ |
358 | gdb_assert (!m_readonly_p); |
359 | gdb_assert (src->m_readonly_p); | |
2d28509a | 360 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
361 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
362 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 363 | to save/restore `cooked' registers that live in memory. */ |
ef79d9a3 | 364 | for (regnum = 0; regnum < m_descr->nr_cooked_registers; regnum++) |
2d28509a | 365 | { |
5602984a | 366 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 367 | { |
ef79d9a3 YQ |
368 | if (src->m_register_status[regnum] == REG_VALID) |
369 | cooked_write (regnum, src->register_buffer (regnum)); | |
2d28509a AC |
370 | } |
371 | } | |
372 | } | |
373 | ||
05d1431c | 374 | static enum register_status |
2d522557 | 375 | do_cooked_read (void *src, int regnum, gdb_byte *buf) |
5602984a | 376 | { |
19ba03f4 | 377 | struct regcache *regcache = (struct regcache *) src; |
123f5f96 | 378 | |
05d1431c | 379 | return regcache_cooked_read (regcache, regnum, buf); |
5602984a AC |
380 | } |
381 | ||
3fadccb3 AC |
382 | void |
383 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
384 | { | |
3fadccb3 | 385 | gdb_assert (src != NULL && dst != NULL); |
ef79d9a3 | 386 | gdb_assert (src->m_descr->gdbarch == dst->m_descr->gdbarch); |
3fadccb3 | 387 | gdb_assert (src != dst); |
ef79d9a3 | 388 | gdb_assert (src->m_readonly_p || dst->m_readonly_p); |
6c95b8df | 389 | |
ef79d9a3 | 390 | if (!src->m_readonly_p) |
5602984a | 391 | regcache_save (dst, do_cooked_read, src); |
ef79d9a3 YQ |
392 | else if (!dst->m_readonly_p) |
393 | dst->restore (src); | |
2d28509a | 394 | else |
ef79d9a3 | 395 | dst->cpy_no_passthrough (src); |
3fadccb3 AC |
396 | } |
397 | ||
bd49952b JK |
398 | /* Copy/duplicate the contents of a register cache. Unlike regcache_cpy, |
399 | which is pass-through, this does not go through to the target. | |
400 | Only values values already in the cache are transferred. The SRC and DST | |
401 | buffers must not overlap. */ | |
402 | ||
ef79d9a3 YQ |
403 | void |
404 | regcache::cpy_no_passthrough (struct regcache *src) | |
3fadccb3 | 405 | { |
ef79d9a3 YQ |
406 | gdb_assert (src != NULL); |
407 | gdb_assert (src->m_descr->gdbarch == m_descr->gdbarch); | |
3fadccb3 | 408 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough |
ee99023e PA |
409 | move of data into a thread's regcache. Doing this would be silly |
410 | - it would mean that regcache->register_status would be | |
411 | completely invalid. */ | |
ef79d9a3 | 412 | gdb_assert (m_readonly_p && src->m_readonly_p); |
6c95b8df | 413 | |
ef79d9a3 YQ |
414 | memcpy (m_registers, src->m_registers, |
415 | m_descr->sizeof_cooked_registers); | |
416 | memcpy (m_register_status, src->m_register_status, | |
417 | m_descr->sizeof_cooked_register_status); | |
3fadccb3 AC |
418 | } |
419 | ||
420 | struct regcache * | |
421 | regcache_dup (struct regcache *src) | |
422 | { | |
423 | struct regcache *newbuf; | |
123f5f96 | 424 | |
b421c83c | 425 | gdb_assert (!src->m_readonly_p); |
ef79d9a3 | 426 | newbuf = regcache_xmalloc (src->arch (), get_regcache_aspace (src)); |
b421c83c | 427 | newbuf->save (do_cooked_read, src); |
3fadccb3 AC |
428 | return newbuf; |
429 | } | |
430 | ||
39181896 | 431 | enum register_status |
ee99023e | 432 | regcache_register_status (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
433 | { |
434 | gdb_assert (regcache != NULL); | |
ef79d9a3 YQ |
435 | return regcache->get_register_status (regnum); |
436 | } | |
437 | ||
438 | enum register_status | |
439 | regcache::get_register_status (int regnum) const | |
440 | { | |
6ed7ea50 | 441 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
442 | if (m_readonly_p) |
443 | gdb_assert (regnum < m_descr->nr_cooked_registers); | |
6ed7ea50 | 444 | else |
ef79d9a3 | 445 | gdb_assert (regnum < m_descr->nr_raw_registers); |
6ed7ea50 | 446 | |
ef79d9a3 | 447 | return (enum register_status) m_register_status[regnum]; |
3fadccb3 AC |
448 | } |
449 | ||
9c5ea4d9 UW |
450 | void |
451 | regcache_invalidate (struct regcache *regcache, int regnum) | |
452 | { | |
453 | gdb_assert (regcache != NULL); | |
ef79d9a3 | 454 | regcache->invalidate (regnum); |
9c5ea4d9 UW |
455 | } |
456 | ||
ef79d9a3 YQ |
457 | void |
458 | regcache::invalidate (int regnum) | |
459 | { | |
460 | gdb_assert (regnum >= 0); | |
461 | gdb_assert (!m_readonly_p); | |
462 | gdb_assert (regnum < m_descr->nr_raw_registers); | |
463 | m_register_status[regnum] = REG_UNKNOWN; | |
464 | } | |
9c5ea4d9 | 465 | |
3fadccb3 | 466 | /* Global structure containing the current regcache. */ |
3fadccb3 | 467 | |
5ebd2499 | 468 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
469 | recording if the register values have been changed (eg. by the |
470 | user). Therefore all registers must be written back to the | |
471 | target when appropriate. */ | |
472 | ||
c2250ad1 | 473 | struct regcache_list |
594f7785 | 474 | { |
c2250ad1 UW |
475 | struct regcache *regcache; |
476 | struct regcache_list *next; | |
477 | }; | |
478 | ||
479 | static struct regcache_list *current_regcache; | |
480 | ||
481 | struct regcache * | |
e2d96639 YQ |
482 | get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch, |
483 | struct address_space *aspace) | |
c2250ad1 UW |
484 | { |
485 | struct regcache_list *list; | |
486 | struct regcache *new_regcache; | |
594f7785 | 487 | |
c2250ad1 | 488 | for (list = current_regcache; list; list = list->next) |
ef79d9a3 | 489 | if (ptid_equal (list->regcache->ptid (), ptid) |
c2250ad1 UW |
490 | && get_regcache_arch (list->regcache) == gdbarch) |
491 | return list->regcache; | |
594f7785 | 492 | |
4621115f | 493 | new_regcache = new regcache (gdbarch, aspace, false); |
ef79d9a3 | 494 | new_regcache->set_ptid (ptid); |
e2d96639 | 495 | |
8d749320 | 496 | list = XNEW (struct regcache_list); |
e2d96639 YQ |
497 | list->regcache = new_regcache; |
498 | list->next = current_regcache; | |
499 | current_regcache = list; | |
500 | ||
501 | return new_regcache; | |
502 | } | |
503 | ||
504 | struct regcache * | |
505 | get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) | |
506 | { | |
507 | struct address_space *aspace; | |
508 | ||
b78974c3 PA |
509 | /* For the benefit of "maint print registers" & co when debugging an |
510 | executable, allow dumping the regcache even when there is no | |
511 | thread selected (target_thread_address_space internal-errors if | |
512 | no address space is found). Note that normal user commands will | |
513 | fail higher up on the call stack due to no | |
514 | target_has_registers. */ | |
515 | aspace = (ptid_equal (null_ptid, ptid) | |
516 | ? NULL | |
517 | : target_thread_address_space (ptid)); | |
518 | ||
e2d96639 | 519 | return get_thread_arch_aspace_regcache (ptid, gdbarch, aspace); |
594f7785 UW |
520 | } |
521 | ||
c2250ad1 UW |
522 | static ptid_t current_thread_ptid; |
523 | static struct gdbarch *current_thread_arch; | |
524 | ||
525 | struct regcache * | |
526 | get_thread_regcache (ptid_t ptid) | |
527 | { | |
528 | if (!current_thread_arch || !ptid_equal (current_thread_ptid, ptid)) | |
529 | { | |
530 | current_thread_ptid = ptid; | |
531 | current_thread_arch = target_thread_architecture (ptid); | |
532 | } | |
533 | ||
534 | return get_thread_arch_regcache (ptid, current_thread_arch); | |
535 | } | |
536 | ||
537 | struct regcache * | |
538 | get_current_regcache (void) | |
594f7785 UW |
539 | { |
540 | return get_thread_regcache (inferior_ptid); | |
541 | } | |
32178cab | 542 | |
361c8ade GB |
543 | /* See common/common-regcache.h. */ |
544 | ||
545 | struct regcache * | |
546 | get_thread_regcache_for_ptid (ptid_t ptid) | |
547 | { | |
548 | return get_thread_regcache (ptid); | |
549 | } | |
32178cab | 550 | |
f4c5303c OF |
551 | /* Observer for the target_changed event. */ |
552 | ||
2c0b251b | 553 | static void |
f4c5303c OF |
554 | regcache_observer_target_changed (struct target_ops *target) |
555 | { | |
556 | registers_changed (); | |
557 | } | |
558 | ||
5231c1fd PA |
559 | /* Update global variables old ptids to hold NEW_PTID if they were |
560 | holding OLD_PTID. */ | |
561 | static void | |
562 | regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
563 | { | |
c2250ad1 UW |
564 | struct regcache_list *list; |
565 | ||
566 | for (list = current_regcache; list; list = list->next) | |
ef79d9a3 YQ |
567 | if (ptid_equal (list->regcache->ptid (), old_ptid)) |
568 | list->regcache->set_ptid (new_ptid); | |
5231c1fd PA |
569 | } |
570 | ||
32178cab MS |
571 | /* Low level examining and depositing of registers. |
572 | ||
573 | The caller is responsible for making sure that the inferior is | |
574 | stopped before calling the fetching routines, or it will get | |
575 | garbage. (a change from GDB version 3, in which the caller got the | |
576 | value from the last stop). */ | |
577 | ||
578 | /* REGISTERS_CHANGED () | |
579 | ||
580 | Indicate that registers may have changed, so invalidate the cache. */ | |
581 | ||
582 | void | |
e66408ed | 583 | registers_changed_ptid (ptid_t ptid) |
32178cab | 584 | { |
e66408ed | 585 | struct regcache_list *list, **list_link; |
c2250ad1 | 586 | |
e66408ed PA |
587 | list = current_regcache; |
588 | list_link = ¤t_regcache; | |
589 | while (list) | |
c2250ad1 | 590 | { |
ef79d9a3 | 591 | if (ptid_match (list->regcache->ptid (), ptid)) |
e66408ed PA |
592 | { |
593 | struct regcache_list *dead = list; | |
594 | ||
595 | *list_link = list->next; | |
596 | regcache_xfree (list->regcache); | |
597 | list = *list_link; | |
598 | xfree (dead); | |
599 | continue; | |
600 | } | |
601 | ||
602 | list_link = &list->next; | |
603 | list = *list_link; | |
c2250ad1 | 604 | } |
32178cab | 605 | |
c34fd852 | 606 | if (ptid_match (current_thread_ptid, ptid)) |
041274d8 PA |
607 | { |
608 | current_thread_ptid = null_ptid; | |
609 | current_thread_arch = NULL; | |
610 | } | |
32178cab | 611 | |
c34fd852 | 612 | if (ptid_match (inferior_ptid, ptid)) |
041274d8 PA |
613 | { |
614 | /* We just deleted the regcache of the current thread. Need to | |
615 | forget about any frames we have cached, too. */ | |
616 | reinit_frame_cache (); | |
617 | } | |
618 | } | |
c2250ad1 | 619 | |
041274d8 PA |
620 | void |
621 | registers_changed (void) | |
622 | { | |
623 | registers_changed_ptid (minus_one_ptid); | |
a5d9d57d | 624 | |
32178cab MS |
625 | /* Force cleanup of any alloca areas if using C alloca instead of |
626 | a builtin alloca. This particular call is used to clean up | |
627 | areas allocated by low level target code which may build up | |
628 | during lengthy interactions between gdb and the target before | |
629 | gdb gives control to the user (ie watchpoints). */ | |
630 | alloca (0); | |
32178cab MS |
631 | } |
632 | ||
8e368124 AH |
633 | void |
634 | regcache_raw_update (struct regcache *regcache, int regnum) | |
61a0eb5b | 635 | { |
8e368124 | 636 | gdb_assert (regcache != NULL); |
ef79d9a3 YQ |
637 | |
638 | regcache->raw_update (regnum); | |
639 | } | |
640 | ||
641 | void | |
642 | regcache::raw_update (int regnum) | |
643 | { | |
644 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
8e368124 | 645 | |
3fadccb3 AC |
646 | /* Make certain that the register cache is up-to-date with respect |
647 | to the current thread. This switching shouldn't be necessary | |
648 | only there is still only one target side register cache. Sigh! | |
649 | On the bright side, at least there is a regcache object. */ | |
8e368124 | 650 | |
ef79d9a3 | 651 | if (!m_readonly_p && get_register_status (regnum) == REG_UNKNOWN) |
3fadccb3 | 652 | { |
ef79d9a3 | 653 | target_fetch_registers (this, regnum); |
788c8b10 PA |
654 | |
655 | /* A number of targets can't access the whole set of raw | |
656 | registers (because the debug API provides no means to get at | |
657 | them). */ | |
ef79d9a3 YQ |
658 | if (m_register_status[regnum] == REG_UNKNOWN) |
659 | m_register_status[regnum] = REG_UNAVAILABLE; | |
3fadccb3 | 660 | } |
8e368124 AH |
661 | } |
662 | ||
663 | enum register_status | |
664 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) | |
ef79d9a3 YQ |
665 | { |
666 | return regcache->raw_read (regnum, buf); | |
667 | } | |
668 | ||
669 | enum register_status | |
670 | regcache::raw_read (int regnum, gdb_byte *buf) | |
8e368124 AH |
671 | { |
672 | gdb_assert (buf != NULL); | |
ef79d9a3 | 673 | raw_update (regnum); |
05d1431c | 674 | |
ef79d9a3 YQ |
675 | if (m_register_status[regnum] != REG_VALID) |
676 | memset (buf, 0, m_descr->sizeof_register[regnum]); | |
05d1431c | 677 | else |
ef79d9a3 YQ |
678 | memcpy (buf, register_buffer (regnum), |
679 | m_descr->sizeof_register[regnum]); | |
05d1431c | 680 | |
ef79d9a3 | 681 | return (enum register_status) m_register_status[regnum]; |
61a0eb5b AC |
682 | } |
683 | ||
05d1431c | 684 | enum register_status |
28fc6740 | 685 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) |
ef79d9a3 YQ |
686 | { |
687 | gdb_assert (regcache != NULL); | |
688 | return regcache->raw_read_signed (regnum, val); | |
689 | } | |
690 | ||
691 | enum register_status | |
692 | regcache::raw_read_signed (int regnum, LONGEST *val) | |
28fc6740 | 693 | { |
2d522557 | 694 | gdb_byte *buf; |
05d1431c | 695 | enum register_status status; |
123f5f96 | 696 | |
ef79d9a3 YQ |
697 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
698 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
699 | status = raw_read (regnum, buf); | |
05d1431c PA |
700 | if (status == REG_VALID) |
701 | *val = extract_signed_integer | |
ef79d9a3 YQ |
702 | (buf, m_descr->sizeof_register[regnum], |
703 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
704 | else |
705 | *val = 0; | |
706 | return status; | |
28fc6740 AC |
707 | } |
708 | ||
05d1431c | 709 | enum register_status |
28fc6740 AC |
710 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, |
711 | ULONGEST *val) | |
ef79d9a3 YQ |
712 | { |
713 | gdb_assert (regcache != NULL); | |
714 | return regcache->raw_read_unsigned (regnum, val); | |
715 | } | |
716 | ||
717 | ||
718 | enum register_status | |
719 | regcache::raw_read_unsigned (int regnum, ULONGEST *val) | |
28fc6740 | 720 | { |
2d522557 | 721 | gdb_byte *buf; |
05d1431c | 722 | enum register_status status; |
123f5f96 | 723 | |
ef79d9a3 YQ |
724 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
725 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
726 | status = raw_read (regnum, buf); | |
05d1431c PA |
727 | if (status == REG_VALID) |
728 | *val = extract_unsigned_integer | |
ef79d9a3 YQ |
729 | (buf, m_descr->sizeof_register[regnum], |
730 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
731 | else |
732 | *val = 0; | |
733 | return status; | |
28fc6740 AC |
734 | } |
735 | ||
c00dcbe9 MK |
736 | void |
737 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
ef79d9a3 YQ |
738 | { |
739 | gdb_assert (regcache != NULL); | |
740 | regcache->raw_write_signed (regnum, val); | |
741 | } | |
742 | ||
743 | void | |
744 | regcache::raw_write_signed (int regnum, LONGEST val) | |
c00dcbe9 | 745 | { |
7c543f7b | 746 | gdb_byte *buf; |
123f5f96 | 747 | |
ef79d9a3 YQ |
748 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
749 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
750 | store_signed_integer (buf, m_descr->sizeof_register[regnum], | |
751 | gdbarch_byte_order (m_descr->gdbarch), val); | |
752 | raw_write (regnum, buf); | |
c00dcbe9 MK |
753 | } |
754 | ||
755 | void | |
756 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
757 | ULONGEST val) | |
ef79d9a3 YQ |
758 | { |
759 | gdb_assert (regcache != NULL); | |
760 | regcache->raw_write_unsigned (regnum, val); | |
761 | } | |
762 | ||
763 | void | |
764 | regcache::raw_write_unsigned (int regnum, ULONGEST val) | |
c00dcbe9 | 765 | { |
7c543f7b | 766 | gdb_byte *buf; |
123f5f96 | 767 | |
ef79d9a3 YQ |
768 | gdb_assert (regnum >=0 && regnum < m_descr->nr_raw_registers); |
769 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
770 | store_unsigned_integer (buf, m_descr->sizeof_register[regnum], | |
771 | gdbarch_byte_order (m_descr->gdbarch), val); | |
772 | raw_write (regnum, buf); | |
c00dcbe9 MK |
773 | } |
774 | ||
9fd15b2e YQ |
775 | LONGEST |
776 | regcache_raw_get_signed (struct regcache *regcache, int regnum) | |
777 | { | |
778 | LONGEST value; | |
779 | enum register_status status; | |
780 | ||
781 | status = regcache_raw_read_signed (regcache, regnum, &value); | |
782 | if (status == REG_UNAVAILABLE) | |
783 | throw_error (NOT_AVAILABLE_ERROR, | |
784 | _("Register %d is not available"), regnum); | |
785 | return value; | |
786 | } | |
787 | ||
05d1431c | 788 | enum register_status |
2d522557 | 789 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
ef79d9a3 YQ |
790 | { |
791 | return regcache->cooked_read (regnum, buf); | |
792 | } | |
793 | ||
794 | enum register_status | |
795 | regcache::cooked_read (int regnum, gdb_byte *buf) | |
68365089 | 796 | { |
d138e37a | 797 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
798 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
799 | if (regnum < m_descr->nr_raw_registers) | |
800 | return raw_read (regnum, buf); | |
801 | else if (m_readonly_p | |
802 | && m_register_status[regnum] != REG_UNKNOWN) | |
05d1431c PA |
803 | { |
804 | /* Read-only register cache, perhaps the cooked value was | |
805 | cached? */ | |
ef79d9a3 YQ |
806 | if (m_register_status[regnum] == REG_VALID) |
807 | memcpy (buf, register_buffer (regnum), | |
808 | m_descr->sizeof_register[regnum]); | |
05d1431c | 809 | else |
ef79d9a3 | 810 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
05d1431c | 811 | |
ef79d9a3 | 812 | return (enum register_status) m_register_status[regnum]; |
05d1431c | 813 | } |
ef79d9a3 | 814 | else if (gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) |
3543a589 TT |
815 | { |
816 | struct value *mark, *computed; | |
817 | enum register_status result = REG_VALID; | |
818 | ||
819 | mark = value_mark (); | |
820 | ||
ef79d9a3 YQ |
821 | computed = gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
822 | this, regnum); | |
3543a589 TT |
823 | if (value_entirely_available (computed)) |
824 | memcpy (buf, value_contents_raw (computed), | |
ef79d9a3 | 825 | m_descr->sizeof_register[regnum]); |
3543a589 TT |
826 | else |
827 | { | |
ef79d9a3 | 828 | memset (buf, 0, m_descr->sizeof_register[regnum]); |
3543a589 TT |
829 | result = REG_UNAVAILABLE; |
830 | } | |
831 | ||
832 | value_free_to_mark (mark); | |
833 | ||
834 | return result; | |
835 | } | |
d138e37a | 836 | else |
ef79d9a3 | 837 | return gdbarch_pseudo_register_read (m_descr->gdbarch, this, |
05d1431c | 838 | regnum, buf); |
61a0eb5b AC |
839 | } |
840 | ||
3543a589 TT |
841 | struct value * |
842 | regcache_cooked_read_value (struct regcache *regcache, int regnum) | |
ef79d9a3 YQ |
843 | { |
844 | return regcache->cooked_read_value (regnum); | |
845 | } | |
846 | ||
847 | struct value * | |
848 | regcache::cooked_read_value (int regnum) | |
3543a589 TT |
849 | { |
850 | gdb_assert (regnum >= 0); | |
ef79d9a3 | 851 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
3543a589 | 852 | |
ef79d9a3 YQ |
853 | if (regnum < m_descr->nr_raw_registers |
854 | || (m_readonly_p && m_register_status[regnum] != REG_UNKNOWN) | |
855 | || !gdbarch_pseudo_register_read_value_p (m_descr->gdbarch)) | |
3543a589 TT |
856 | { |
857 | struct value *result; | |
858 | ||
ef79d9a3 | 859 | result = allocate_value (register_type (m_descr->gdbarch, regnum)); |
3543a589 TT |
860 | VALUE_LVAL (result) = lval_register; |
861 | VALUE_REGNUM (result) = regnum; | |
862 | ||
863 | /* It is more efficient in general to do this delegation in this | |
864 | direction than in the other one, even though the value-based | |
865 | API is preferred. */ | |
ef79d9a3 YQ |
866 | if (cooked_read (regnum, |
867 | value_contents_raw (result)) == REG_UNAVAILABLE) | |
3543a589 TT |
868 | mark_value_bytes_unavailable (result, 0, |
869 | TYPE_LENGTH (value_type (result))); | |
870 | ||
871 | return result; | |
872 | } | |
873 | else | |
ef79d9a3 YQ |
874 | return gdbarch_pseudo_register_read_value (m_descr->gdbarch, |
875 | this, regnum); | |
3543a589 TT |
876 | } |
877 | ||
05d1431c | 878 | enum register_status |
a378f419 AC |
879 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, |
880 | LONGEST *val) | |
ef79d9a3 YQ |
881 | { |
882 | gdb_assert (regcache != NULL); | |
883 | return regcache->cooked_read_signed (regnum, val); | |
884 | } | |
885 | ||
886 | enum register_status | |
887 | regcache::cooked_read_signed (int regnum, LONGEST *val) | |
a378f419 | 888 | { |
05d1431c | 889 | enum register_status status; |
2d522557 | 890 | gdb_byte *buf; |
123f5f96 | 891 | |
ef79d9a3 YQ |
892 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
893 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
894 | status = cooked_read (regnum, buf); | |
05d1431c PA |
895 | if (status == REG_VALID) |
896 | *val = extract_signed_integer | |
ef79d9a3 YQ |
897 | (buf, m_descr->sizeof_register[regnum], |
898 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
899 | else |
900 | *val = 0; | |
901 | return status; | |
a378f419 AC |
902 | } |
903 | ||
05d1431c | 904 | enum register_status |
a378f419 AC |
905 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, |
906 | ULONGEST *val) | |
ef79d9a3 YQ |
907 | { |
908 | gdb_assert (regcache != NULL); | |
909 | return regcache->cooked_read_unsigned (regnum, val); | |
910 | } | |
911 | ||
912 | enum register_status | |
913 | regcache::cooked_read_unsigned (int regnum, ULONGEST *val) | |
a378f419 | 914 | { |
05d1431c | 915 | enum register_status status; |
2d522557 | 916 | gdb_byte *buf; |
123f5f96 | 917 | |
ef79d9a3 YQ |
918 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); |
919 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
920 | status = cooked_read (regnum, buf); | |
05d1431c PA |
921 | if (status == REG_VALID) |
922 | *val = extract_unsigned_integer | |
ef79d9a3 YQ |
923 | (buf, m_descr->sizeof_register[regnum], |
924 | gdbarch_byte_order (m_descr->gdbarch)); | |
05d1431c PA |
925 | else |
926 | *val = 0; | |
927 | return status; | |
a378f419 AC |
928 | } |
929 | ||
a66a9c23 AC |
930 | void |
931 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
932 | LONGEST val) | |
ef79d9a3 YQ |
933 | { |
934 | gdb_assert (regcache != NULL); | |
935 | regcache->cooked_write_signed (regnum, val); | |
936 | } | |
937 | ||
938 | void | |
939 | regcache::cooked_write_signed (int regnum, LONGEST val) | |
a66a9c23 | 940 | { |
7c543f7b | 941 | gdb_byte *buf; |
123f5f96 | 942 | |
ef79d9a3 YQ |
943 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
944 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
945 | store_signed_integer (buf, m_descr->sizeof_register[regnum], | |
946 | gdbarch_byte_order (m_descr->gdbarch), val); | |
947 | cooked_write (regnum, buf); | |
a66a9c23 AC |
948 | } |
949 | ||
950 | void | |
951 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
952 | ULONGEST val) | |
ef79d9a3 YQ |
953 | { |
954 | gdb_assert (regcache != NULL); | |
955 | regcache->cooked_write_unsigned (regnum, val); | |
956 | } | |
957 | ||
958 | void | |
959 | regcache::cooked_write_unsigned (int regnum, ULONGEST val) | |
a66a9c23 | 960 | { |
7c543f7b | 961 | gdb_byte *buf; |
123f5f96 | 962 | |
ef79d9a3 YQ |
963 | gdb_assert (regnum >=0 && regnum < m_descr->nr_cooked_registers); |
964 | buf = (gdb_byte *) alloca (m_descr->sizeof_register[regnum]); | |
965 | store_unsigned_integer (buf, m_descr->sizeof_register[regnum], | |
966 | gdbarch_byte_order (m_descr->gdbarch), val); | |
967 | cooked_write (regnum, buf); | |
a66a9c23 AC |
968 | } |
969 | ||
20aa2c60 PA |
970 | /* See regcache.h. */ |
971 | ||
972 | void | |
973 | regcache_raw_set_cached_value (struct regcache *regcache, int regnum, | |
974 | const gdb_byte *buf) | |
975 | { | |
ef79d9a3 YQ |
976 | regcache->raw_set_cached_value (regnum, buf); |
977 | } | |
978 | ||
979 | void | |
980 | regcache::raw_set_cached_value (int regnum, const gdb_byte *buf) | |
981 | { | |
982 | memcpy (register_buffer (regnum), buf, | |
983 | m_descr->sizeof_register[regnum]); | |
984 | m_register_status[regnum] = REG_VALID; | |
20aa2c60 PA |
985 | } |
986 | ||
61a0eb5b | 987 | void |
2d522557 AC |
988 | regcache_raw_write (struct regcache *regcache, int regnum, |
989 | const gdb_byte *buf) | |
ef79d9a3 YQ |
990 | { |
991 | gdb_assert (regcache != NULL && buf != NULL); | |
992 | regcache->raw_write (regnum, buf); | |
993 | } | |
994 | ||
995 | void | |
996 | regcache::raw_write (int regnum, const gdb_byte *buf) | |
61a0eb5b | 997 | { |
3e00d44f | 998 | struct cleanup *old_chain; |
594f7785 | 999 | |
ef79d9a3 YQ |
1000 | gdb_assert (buf != NULL); |
1001 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1002 | gdb_assert (!m_readonly_p); | |
3fadccb3 | 1003 | |
3fadccb3 AC |
1004 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
1005 | change the registers array if something writes to this register. */ | |
ef79d9a3 | 1006 | if (gdbarch_cannot_store_register (arch (), regnum)) |
3fadccb3 AC |
1007 | return; |
1008 | ||
3fadccb3 | 1009 | /* If we have a valid copy of the register, and new value == old |
0df8b418 | 1010 | value, then don't bother doing the actual store. */ |
ef79d9a3 YQ |
1011 | if (get_register_status (regnum) == REG_VALID |
1012 | && (memcmp (register_buffer (regnum), buf, | |
1013 | m_descr->sizeof_register[regnum]) == 0)) | |
3fadccb3 AC |
1014 | return; |
1015 | ||
ef79d9a3 YQ |
1016 | target_prepare_to_store (this); |
1017 | raw_set_cached_value (regnum, buf); | |
b94ade42 PL |
1018 | |
1019 | /* Register a cleanup function for invalidating the register after it is | |
1020 | written, in case of a failure. */ | |
ef79d9a3 | 1021 | old_chain = make_cleanup_regcache_invalidate (this, regnum); |
b94ade42 | 1022 | |
ef79d9a3 | 1023 | target_store_registers (this, regnum); |
594f7785 | 1024 | |
b94ade42 PL |
1025 | /* The target did not throw an error so we can discard invalidating the |
1026 | register and restore the cleanup chain to what it was. */ | |
3e00d44f | 1027 | discard_cleanups (old_chain); |
61a0eb5b AC |
1028 | } |
1029 | ||
68365089 | 1030 | void |
2d522557 AC |
1031 | regcache_cooked_write (struct regcache *regcache, int regnum, |
1032 | const gdb_byte *buf) | |
ef79d9a3 YQ |
1033 | { |
1034 | regcache->cooked_write (regnum, buf); | |
1035 | } | |
1036 | ||
1037 | void | |
1038 | regcache::cooked_write (int regnum, const gdb_byte *buf) | |
68365089 | 1039 | { |
d138e37a | 1040 | gdb_assert (regnum >= 0); |
ef79d9a3 YQ |
1041 | gdb_assert (regnum < m_descr->nr_cooked_registers); |
1042 | if (regnum < m_descr->nr_raw_registers) | |
1043 | raw_write (regnum, buf); | |
d138e37a | 1044 | else |
ef79d9a3 | 1045 | gdbarch_pseudo_register_write (m_descr->gdbarch, this, |
d8124050 | 1046 | regnum, buf); |
61a0eb5b AC |
1047 | } |
1048 | ||
06c0b04e AC |
1049 | /* Perform a partial register transfer using a read, modify, write |
1050 | operation. */ | |
1051 | ||
1052 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
1053 | void *buf); | |
1054 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
1055 | const void *buf); | |
1056 | ||
ef79d9a3 YQ |
1057 | enum register_status |
1058 | regcache::xfer_part (int regnum, int offset, int len, void *in, | |
1059 | const void *out, | |
1060 | enum register_status (*read) (struct regcache *regcache, | |
1061 | int regnum, | |
1062 | gdb_byte *buf), | |
1063 | void (*write) (struct regcache *regcache, int regnum, | |
1064 | const gdb_byte *buf)) | |
1065 | { | |
1066 | struct gdbarch *gdbarch = arch (); | |
9890e433 | 1067 | gdb_byte *reg = (gdb_byte *) alloca (register_size (gdbarch, regnum)); |
123f5f96 | 1068 | |
ef79d9a3 YQ |
1069 | gdb_assert (offset >= 0 && offset <= m_descr->sizeof_register[regnum]); |
1070 | gdb_assert (len >= 0 && offset + len <= m_descr->sizeof_register[regnum]); | |
06c0b04e AC |
1071 | /* Something to do? */ |
1072 | if (offset + len == 0) | |
05d1431c | 1073 | return REG_VALID; |
0df8b418 | 1074 | /* Read (when needed) ... */ |
06c0b04e AC |
1075 | if (in != NULL |
1076 | || offset > 0 | |
ef79d9a3 | 1077 | || offset + len < m_descr->sizeof_register[regnum]) |
06c0b04e | 1078 | { |
05d1431c PA |
1079 | enum register_status status; |
1080 | ||
06c0b04e | 1081 | gdb_assert (read != NULL); |
ef79d9a3 | 1082 | status = read (this, regnum, reg); |
05d1431c PA |
1083 | if (status != REG_VALID) |
1084 | return status; | |
06c0b04e | 1085 | } |
0df8b418 | 1086 | /* ... modify ... */ |
06c0b04e AC |
1087 | if (in != NULL) |
1088 | memcpy (in, reg + offset, len); | |
1089 | if (out != NULL) | |
1090 | memcpy (reg + offset, out, len); | |
1091 | /* ... write (when needed). */ | |
1092 | if (out != NULL) | |
1093 | { | |
1094 | gdb_assert (write != NULL); | |
ef79d9a3 | 1095 | write (this, regnum, reg); |
06c0b04e | 1096 | } |
05d1431c PA |
1097 | |
1098 | return REG_VALID; | |
06c0b04e AC |
1099 | } |
1100 | ||
05d1431c | 1101 | enum register_status |
06c0b04e | 1102 | regcache_raw_read_part (struct regcache *regcache, int regnum, |
2d522557 | 1103 | int offset, int len, gdb_byte *buf) |
06c0b04e | 1104 | { |
ef79d9a3 YQ |
1105 | return regcache->raw_read_part (regnum, offset, len, buf); |
1106 | } | |
123f5f96 | 1107 | |
ef79d9a3 YQ |
1108 | enum register_status |
1109 | regcache::raw_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1110 | { | |
1111 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1112 | return xfer_part (regnum, offset, len, buf, NULL, | |
1113 | regcache_raw_read, regcache_raw_write); | |
06c0b04e AC |
1114 | } |
1115 | ||
1116 | void | |
1117 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1118 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1119 | { |
ef79d9a3 YQ |
1120 | regcache->raw_write_part (regnum, offset, len, buf); |
1121 | } | |
123f5f96 | 1122 | |
ef79d9a3 YQ |
1123 | void |
1124 | regcache::raw_write_part (int regnum, int offset, int len, | |
1125 | const gdb_byte *buf) | |
1126 | { | |
1127 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
1128 | xfer_part (regnum, offset, len, NULL, buf, regcache_raw_read, | |
1129 | regcache_raw_write); | |
06c0b04e AC |
1130 | } |
1131 | ||
05d1431c | 1132 | enum register_status |
06c0b04e | 1133 | regcache_cooked_read_part (struct regcache *regcache, int regnum, |
2d522557 | 1134 | int offset, int len, gdb_byte *buf) |
06c0b04e | 1135 | { |
ef79d9a3 YQ |
1136 | return regcache->cooked_read_part (regnum, offset, len, buf); |
1137 | } | |
123f5f96 | 1138 | |
ef79d9a3 YQ |
1139 | |
1140 | enum register_status | |
1141 | regcache::cooked_read_part (int regnum, int offset, int len, gdb_byte *buf) | |
1142 | { | |
1143 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1144 | return xfer_part (regnum, offset, len, buf, NULL, | |
1145 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e AC |
1146 | } |
1147 | ||
1148 | void | |
1149 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 1150 | int offset, int len, const gdb_byte *buf) |
06c0b04e | 1151 | { |
ef79d9a3 YQ |
1152 | regcache->cooked_write_part (regnum, offset, len, buf); |
1153 | } | |
123f5f96 | 1154 | |
ef79d9a3 YQ |
1155 | void |
1156 | regcache::cooked_write_part (int regnum, int offset, int len, | |
1157 | const gdb_byte *buf) | |
1158 | { | |
1159 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_cooked_registers); | |
1160 | xfer_part (regnum, offset, len, NULL, buf, | |
1161 | regcache_cooked_read, regcache_cooked_write); | |
06c0b04e | 1162 | } |
32178cab | 1163 | |
a16d75cc | 1164 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
1165 | |
1166 | void | |
6618125d | 1167 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
ef79d9a3 YQ |
1168 | { |
1169 | gdb_assert (regcache != NULL); | |
1170 | regcache->raw_supply (regnum, buf); | |
1171 | } | |
1172 | ||
1173 | void | |
1174 | regcache::raw_supply (int regnum, const void *buf) | |
9a661b68 MK |
1175 | { |
1176 | void *regbuf; | |
1177 | size_t size; | |
1178 | ||
ef79d9a3 YQ |
1179 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); |
1180 | gdb_assert (!m_readonly_p); | |
9a661b68 | 1181 | |
ef79d9a3 YQ |
1182 | regbuf = register_buffer (regnum); |
1183 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1184 | |
1185 | if (buf) | |
ee99023e PA |
1186 | { |
1187 | memcpy (regbuf, buf, size); | |
ef79d9a3 | 1188 | m_register_status[regnum] = REG_VALID; |
ee99023e | 1189 | } |
9a661b68 | 1190 | else |
ee99023e PA |
1191 | { |
1192 | /* This memset not strictly necessary, but better than garbage | |
1193 | in case the register value manages to escape somewhere (due | |
1194 | to a bug, no less). */ | |
1195 | memset (regbuf, 0, size); | |
ef79d9a3 | 1196 | m_register_status[regnum] = REG_UNAVAILABLE; |
ee99023e | 1197 | } |
9a661b68 MK |
1198 | } |
1199 | ||
1200 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ | |
1201 | ||
1202 | void | |
6618125d | 1203 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
ef79d9a3 YQ |
1204 | { |
1205 | gdb_assert (regcache != NULL && buf != NULL); | |
1206 | regcache->raw_collect (regnum, buf); | |
1207 | } | |
1208 | ||
1209 | void | |
1210 | regcache::raw_collect (int regnum, void *buf) const | |
9a661b68 MK |
1211 | { |
1212 | const void *regbuf; | |
1213 | size_t size; | |
1214 | ||
ef79d9a3 YQ |
1215 | gdb_assert (buf != NULL); |
1216 | gdb_assert (regnum >= 0 && regnum < m_descr->nr_raw_registers); | |
9a661b68 | 1217 | |
ef79d9a3 YQ |
1218 | regbuf = register_buffer (regnum); |
1219 | size = m_descr->sizeof_register[regnum]; | |
9a661b68 MK |
1220 | memcpy (buf, regbuf, size); |
1221 | } | |
1222 | ||
0b309272 AA |
1223 | /* Transfer a single or all registers belonging to a certain register |
1224 | set to or from a buffer. This is the main worker function for | |
1225 | regcache_supply_regset and regcache_collect_regset. */ | |
1226 | ||
ef79d9a3 YQ |
1227 | void |
1228 | regcache::transfer_regset (const struct regset *regset, | |
1229 | struct regcache *out_regcache, | |
1230 | int regnum, const void *in_buf, | |
1231 | void *out_buf, size_t size) const | |
0b309272 AA |
1232 | { |
1233 | const struct regcache_map_entry *map; | |
1234 | int offs = 0, count; | |
1235 | ||
19ba03f4 SM |
1236 | for (map = (const struct regcache_map_entry *) regset->regmap; |
1237 | (count = map->count) != 0; | |
1238 | map++) | |
0b309272 AA |
1239 | { |
1240 | int regno = map->regno; | |
1241 | int slot_size = map->size; | |
1242 | ||
1243 | if (slot_size == 0 && regno != REGCACHE_MAP_SKIP) | |
ef79d9a3 | 1244 | slot_size = m_descr->sizeof_register[regno]; |
0b309272 AA |
1245 | |
1246 | if (regno == REGCACHE_MAP_SKIP | |
1247 | || (regnum != -1 | |
1248 | && (regnum < regno || regnum >= regno + count))) | |
1249 | offs += count * slot_size; | |
1250 | ||
1251 | else if (regnum == -1) | |
1252 | for (; count--; regno++, offs += slot_size) | |
1253 | { | |
1254 | if (offs + slot_size > size) | |
1255 | break; | |
1256 | ||
1257 | if (out_buf) | |
ef79d9a3 | 1258 | raw_collect (regno, (gdb_byte *) out_buf + offs); |
0b309272 | 1259 | else |
ef79d9a3 YQ |
1260 | out_regcache->raw_supply (regno, in_buf |
1261 | ? (const gdb_byte *) in_buf + offs | |
1262 | : NULL); | |
0b309272 AA |
1263 | } |
1264 | else | |
1265 | { | |
1266 | /* Transfer a single register and return. */ | |
1267 | offs += (regnum - regno) * slot_size; | |
1268 | if (offs + slot_size > size) | |
1269 | return; | |
1270 | ||
1271 | if (out_buf) | |
ef79d9a3 | 1272 | raw_collect (regnum, (gdb_byte *) out_buf + offs); |
0b309272 | 1273 | else |
ef79d9a3 YQ |
1274 | out_regcache->raw_supply (regnum, in_buf |
1275 | ? (const gdb_byte *) in_buf + offs | |
1276 | : NULL); | |
0b309272 AA |
1277 | return; |
1278 | } | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* Supply register REGNUM from BUF to REGCACHE, using the register map | |
1283 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. | |
1284 | If BUF is NULL, set the register(s) to "unavailable" status. */ | |
1285 | ||
1286 | void | |
1287 | regcache_supply_regset (const struct regset *regset, | |
1288 | struct regcache *regcache, | |
1289 | int regnum, const void *buf, size_t size) | |
1290 | { | |
ef79d9a3 YQ |
1291 | regcache->supply_regset (regset, regnum, buf, size); |
1292 | } | |
1293 | ||
1294 | void | |
1295 | regcache::supply_regset (const struct regset *regset, | |
1296 | int regnum, const void *buf, size_t size) | |
1297 | { | |
1298 | transfer_regset (regset, this, regnum, buf, NULL, size); | |
0b309272 AA |
1299 | } |
1300 | ||
1301 | /* Collect register REGNUM from REGCACHE to BUF, using the register | |
1302 | map in REGSET. If REGNUM is -1, do this for all registers in | |
1303 | REGSET. */ | |
1304 | ||
1305 | void | |
1306 | regcache_collect_regset (const struct regset *regset, | |
1307 | const struct regcache *regcache, | |
1308 | int regnum, void *buf, size_t size) | |
1309 | { | |
ef79d9a3 YQ |
1310 | regcache->collect_regset (regset, regnum, buf, size); |
1311 | } | |
1312 | ||
1313 | void | |
1314 | regcache::collect_regset (const struct regset *regset, | |
1315 | int regnum, void *buf, size_t size) const | |
1316 | { | |
1317 | transfer_regset (regset, NULL, regnum, NULL, buf, size); | |
0b309272 AA |
1318 | } |
1319 | ||
193cb69f | 1320 | |
515630c5 | 1321 | /* Special handling for register PC. */ |
32178cab MS |
1322 | |
1323 | CORE_ADDR | |
515630c5 | 1324 | regcache_read_pc (struct regcache *regcache) |
32178cab | 1325 | { |
61a1198a UW |
1326 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1327 | ||
32178cab MS |
1328 | CORE_ADDR pc_val; |
1329 | ||
61a1198a UW |
1330 | if (gdbarch_read_pc_p (gdbarch)) |
1331 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 1332 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 1333 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 1334 | { |
61a1198a | 1335 | ULONGEST raw_val; |
123f5f96 | 1336 | |
05d1431c PA |
1337 | if (regcache_cooked_read_unsigned (regcache, |
1338 | gdbarch_pc_regnum (gdbarch), | |
1339 | &raw_val) == REG_UNAVAILABLE) | |
1340 | throw_error (NOT_AVAILABLE_ERROR, _("PC register is not available")); | |
1341 | ||
214e098a | 1342 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
1343 | } |
1344 | else | |
515630c5 UW |
1345 | internal_error (__FILE__, __LINE__, |
1346 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
1347 | return pc_val; |
1348 | } | |
1349 | ||
32178cab | 1350 | void |
515630c5 | 1351 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 1352 | { |
61a1198a UW |
1353 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
1354 | ||
61a1198a UW |
1355 | if (gdbarch_write_pc_p (gdbarch)) |
1356 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 1357 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 1358 | regcache_cooked_write_unsigned (regcache, |
214e098a | 1359 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
1360 | else |
1361 | internal_error (__FILE__, __LINE__, | |
515630c5 | 1362 | _("regcache_write_pc: Unable to update PC")); |
edb3359d DJ |
1363 | |
1364 | /* Writing the PC (for instance, from "load") invalidates the | |
1365 | current frame. */ | |
1366 | reinit_frame_cache (); | |
32178cab MS |
1367 | } |
1368 | ||
ed771251 | 1369 | void |
ef79d9a3 | 1370 | regcache::debug_print_register (const char *func, int regno) |
ed771251 | 1371 | { |
ef79d9a3 | 1372 | struct gdbarch *gdbarch = arch (); |
ed771251 AH |
1373 | |
1374 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1375 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) | |
1376 | && gdbarch_register_name (gdbarch, regno) != NULL | |
1377 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
1378 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
1379 | gdbarch_register_name (gdbarch, regno)); | |
1380 | else | |
1381 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1382 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) | |
1383 | { | |
1384 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1385 | int size = register_size (gdbarch, regno); | |
ef79d9a3 | 1386 | gdb_byte *buf = register_buffer (regno); |
ed771251 AH |
1387 | |
1388 | fprintf_unfiltered (gdb_stdlog, " = "); | |
1389 | for (int i = 0; i < size; i++) | |
1390 | { | |
1391 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1392 | } | |
1393 | if (size <= sizeof (LONGEST)) | |
1394 | { | |
1395 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); | |
1396 | ||
1397 | fprintf_unfiltered (gdb_stdlog, " %s %s", | |
1398 | core_addr_to_string_nz (val), plongest (val)); | |
1399 | } | |
1400 | } | |
1401 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1402 | } | |
32178cab | 1403 | |
705152c5 MS |
1404 | static void |
1405 | reg_flush_command (char *command, int from_tty) | |
1406 | { | |
1407 | /* Force-flush the register cache. */ | |
1408 | registers_changed (); | |
1409 | if (from_tty) | |
a3f17187 | 1410 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
1411 | } |
1412 | ||
ef79d9a3 YQ |
1413 | void |
1414 | regcache::dump (ui_file *file, enum regcache_dump_what what_to_dump) | |
af030b9a AC |
1415 | { |
1416 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
ef79d9a3 | 1417 | struct gdbarch *gdbarch = m_descr->gdbarch; |
af030b9a AC |
1418 | int regnum; |
1419 | int footnote_nr = 0; | |
1420 | int footnote_register_size = 0; | |
1421 | int footnote_register_offset = 0; | |
1422 | int footnote_register_type_name_null = 0; | |
1423 | long register_offset = 0; | |
e362b510 | 1424 | gdb_byte buf[MAX_REGISTER_SIZE]; |
af030b9a AC |
1425 | |
1426 | #if 0 | |
af030b9a | 1427 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
ef79d9a3 | 1428 | m_descr->nr_raw_registers); |
af030b9a | 1429 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", |
ef79d9a3 | 1430 | m_descr->nr_cooked_registers); |
af030b9a | 1431 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", |
ef79d9a3 | 1432 | m_descr->sizeof_raw_registers); |
ee99023e | 1433 | fprintf_unfiltered (file, "sizeof_raw_register_status %ld\n", |
ef79d9a3 | 1434 | m_descr->sizeof_raw_register_status); |
f57d151a | 1435 | fprintf_unfiltered (file, "gdbarch_num_regs %d\n", |
214e098a | 1436 | gdbarch_num_regs (gdbarch)); |
f57d151a | 1437 | fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n", |
214e098a | 1438 | gdbarch_num_pseudo_regs (gdbarch)); |
af030b9a AC |
1439 | #endif |
1440 | ||
ef79d9a3 | 1441 | gdb_assert (m_descr->nr_cooked_registers |
214e098a UW |
1442 | == (gdbarch_num_regs (gdbarch) |
1443 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a | 1444 | |
ef79d9a3 | 1445 | for (regnum = -1; regnum < m_descr->nr_cooked_registers; regnum++) |
af030b9a AC |
1446 | { |
1447 | /* Name. */ | |
1448 | if (regnum < 0) | |
1449 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1450 | else | |
1451 | { | |
214e098a | 1452 | const char *p = gdbarch_register_name (gdbarch, regnum); |
123f5f96 | 1453 | |
af030b9a AC |
1454 | if (p == NULL) |
1455 | p = ""; | |
1456 | else if (p[0] == '\0') | |
1457 | p = "''"; | |
1458 | fprintf_unfiltered (file, " %-10s", p); | |
1459 | } | |
1460 | ||
1461 | /* Number. */ | |
1462 | if (regnum < 0) | |
1463 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1464 | else | |
1465 | fprintf_unfiltered (file, " %4d", regnum); | |
1466 | ||
1467 | /* Relative number. */ | |
1468 | if (regnum < 0) | |
1469 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 1470 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
1471 | fprintf_unfiltered (file, " %4d", regnum); |
1472 | else | |
f57d151a | 1473 | fprintf_unfiltered (file, " %4d", |
214e098a | 1474 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
1475 | |
1476 | /* Offset. */ | |
1477 | if (regnum < 0) | |
1478 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1479 | else | |
1480 | { | |
1481 | fprintf_unfiltered (file, " %6ld", | |
ef79d9a3 YQ |
1482 | m_descr->register_offset[regnum]); |
1483 | if (register_offset != m_descr->register_offset[regnum] | |
d3b22ed5 | 1484 | || (regnum > 0 |
ef79d9a3 YQ |
1485 | && (m_descr->register_offset[regnum] |
1486 | != (m_descr->register_offset[regnum - 1] | |
1487 | + m_descr->sizeof_register[regnum - 1]))) | |
d3b22ed5 | 1488 | ) |
af030b9a AC |
1489 | { |
1490 | if (!footnote_register_offset) | |
1491 | footnote_register_offset = ++footnote_nr; | |
1492 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1493 | } | |
1494 | else | |
1495 | fprintf_unfiltered (file, " "); | |
ef79d9a3 YQ |
1496 | register_offset = (m_descr->register_offset[regnum] |
1497 | + m_descr->sizeof_register[regnum]); | |
af030b9a AC |
1498 | } |
1499 | ||
1500 | /* Size. */ | |
1501 | if (regnum < 0) | |
1502 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1503 | else | |
ef79d9a3 | 1504 | fprintf_unfiltered (file, " %5ld", m_descr->sizeof_register[regnum]); |
af030b9a AC |
1505 | |
1506 | /* Type. */ | |
b59ff9d5 AC |
1507 | { |
1508 | const char *t; | |
123f5f96 | 1509 | |
b59ff9d5 AC |
1510 | if (regnum < 0) |
1511 | t = "Type"; | |
1512 | else | |
1513 | { | |
1514 | static const char blt[] = "builtin_type"; | |
123f5f96 | 1515 | |
ef79d9a3 | 1516 | t = TYPE_NAME (register_type (arch (), regnum)); |
b59ff9d5 AC |
1517 | if (t == NULL) |
1518 | { | |
1519 | char *n; | |
123f5f96 | 1520 | |
b59ff9d5 AC |
1521 | if (!footnote_register_type_name_null) |
1522 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1523 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1524 | make_cleanup (xfree, n); |
1525 | t = n; | |
1526 | } | |
1527 | /* Chop a leading builtin_type. */ | |
61012eef | 1528 | if (startswith (t, blt)) |
b59ff9d5 AC |
1529 | t += strlen (blt); |
1530 | } | |
1531 | fprintf_unfiltered (file, " %-15s", t); | |
1532 | } | |
1533 | ||
1534 | /* Leading space always present. */ | |
1535 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1536 | |
1537 | /* Value, raw. */ | |
1538 | if (what_to_dump == regcache_dump_raw) | |
1539 | { | |
1540 | if (regnum < 0) | |
1541 | fprintf_unfiltered (file, "Raw value"); | |
ef79d9a3 | 1542 | else if (regnum >= m_descr->nr_raw_registers) |
af030b9a | 1543 | fprintf_unfiltered (file, "<cooked>"); |
ef79d9a3 | 1544 | else if (get_register_status (regnum) == REG_UNKNOWN) |
af030b9a | 1545 | fprintf_unfiltered (file, "<invalid>"); |
ef79d9a3 | 1546 | else if (get_register_status (regnum) == REG_UNAVAILABLE) |
ee99023e | 1547 | fprintf_unfiltered (file, "<unavailable>"); |
af030b9a AC |
1548 | else |
1549 | { | |
ef79d9a3 | 1550 | raw_read (regnum, buf); |
d3eaaf66 | 1551 | print_hex_chars (file, buf, |
ef79d9a3 | 1552 | m_descr->sizeof_register[regnum], |
d3eaaf66 | 1553 | gdbarch_byte_order (gdbarch)); |
af030b9a AC |
1554 | } |
1555 | } | |
1556 | ||
1557 | /* Value, cooked. */ | |
1558 | if (what_to_dump == regcache_dump_cooked) | |
1559 | { | |
1560 | if (regnum < 0) | |
1561 | fprintf_unfiltered (file, "Cooked value"); | |
1562 | else | |
1563 | { | |
05d1431c PA |
1564 | enum register_status status; |
1565 | ||
ef79d9a3 | 1566 | status = cooked_read (regnum, buf); |
05d1431c PA |
1567 | if (status == REG_UNKNOWN) |
1568 | fprintf_unfiltered (file, "<invalid>"); | |
1569 | else if (status == REG_UNAVAILABLE) | |
1570 | fprintf_unfiltered (file, "<unavailable>"); | |
1571 | else | |
d3eaaf66 | 1572 | print_hex_chars (file, buf, |
ef79d9a3 | 1573 | m_descr->sizeof_register[regnum], |
d3eaaf66 | 1574 | gdbarch_byte_order (gdbarch)); |
af030b9a AC |
1575 | } |
1576 | } | |
1577 | ||
b59ff9d5 AC |
1578 | /* Group members. */ |
1579 | if (what_to_dump == regcache_dump_groups) | |
1580 | { | |
1581 | if (regnum < 0) | |
1582 | fprintf_unfiltered (file, "Groups"); | |
1583 | else | |
1584 | { | |
b59ff9d5 | 1585 | const char *sep = ""; |
6c7d17ba | 1586 | struct reggroup *group; |
123f5f96 | 1587 | |
6c7d17ba AC |
1588 | for (group = reggroup_next (gdbarch, NULL); |
1589 | group != NULL; | |
1590 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1591 | { |
6c7d17ba | 1592 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1593 | { |
3e43a32a MS |
1594 | fprintf_unfiltered (file, |
1595 | "%s%s", sep, reggroup_name (group)); | |
b59ff9d5 AC |
1596 | sep = ","; |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | } | |
1601 | ||
c21236dc PA |
1602 | /* Remote packet configuration. */ |
1603 | if (what_to_dump == regcache_dump_remote) | |
1604 | { | |
1605 | if (regnum < 0) | |
1606 | { | |
1607 | fprintf_unfiltered (file, "Rmt Nr g/G Offset"); | |
1608 | } | |
ef79d9a3 | 1609 | else if (regnum < m_descr->nr_raw_registers) |
c21236dc PA |
1610 | { |
1611 | int pnum, poffset; | |
1612 | ||
ef79d9a3 | 1613 | if (remote_register_number_and_offset (arch (), regnum, |
c21236dc PA |
1614 | &pnum, &poffset)) |
1615 | fprintf_unfiltered (file, "%7d %11d", pnum, poffset); | |
1616 | } | |
1617 | } | |
1618 | ||
af030b9a AC |
1619 | fprintf_unfiltered (file, "\n"); |
1620 | } | |
1621 | ||
1622 | if (footnote_register_size) | |
1623 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1624 | footnote_register_size); | |
1625 | if (footnote_register_offset) | |
1626 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1627 | footnote_register_offset); | |
1628 | if (footnote_register_type_name_null) | |
1629 | fprintf_unfiltered (file, | |
1630 | "*%d: Register type's name NULL.\n", | |
1631 | footnote_register_type_name_null); | |
1632 | do_cleanups (cleanups); | |
1633 | } | |
1634 | ||
1635 | static void | |
1636 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1637 | { | |
1638 | if (args == NULL) | |
ef79d9a3 | 1639 | get_current_regcache ()->dump (gdb_stdout, what_to_dump); |
af030b9a AC |
1640 | else |
1641 | { | |
d7e74731 | 1642 | stdio_file file; |
123f5f96 | 1643 | |
d7e74731 | 1644 | if (!file.open (args, "w")) |
e2e0b3e5 | 1645 | perror_with_name (_("maintenance print architecture")); |
ef79d9a3 | 1646 | get_current_regcache ()->dump (&file, what_to_dump); |
af030b9a AC |
1647 | } |
1648 | } | |
1649 | ||
1650 | static void | |
1651 | maintenance_print_registers (char *args, int from_tty) | |
1652 | { | |
1653 | regcache_print (args, regcache_dump_none); | |
1654 | } | |
1655 | ||
1656 | static void | |
1657 | maintenance_print_raw_registers (char *args, int from_tty) | |
1658 | { | |
1659 | regcache_print (args, regcache_dump_raw); | |
1660 | } | |
1661 | ||
1662 | static void | |
1663 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1664 | { | |
1665 | regcache_print (args, regcache_dump_cooked); | |
1666 | } | |
1667 | ||
b59ff9d5 AC |
1668 | static void |
1669 | maintenance_print_register_groups (char *args, int from_tty) | |
1670 | { | |
1671 | regcache_print (args, regcache_dump_groups); | |
1672 | } | |
1673 | ||
c21236dc PA |
1674 | static void |
1675 | maintenance_print_remote_registers (char *args, int from_tty) | |
1676 | { | |
1677 | regcache_print (args, regcache_dump_remote); | |
1678 | } | |
1679 | ||
b9362cc7 AC |
1680 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1681 | ||
32178cab MS |
1682 | void |
1683 | _initialize_regcache (void) | |
1684 | { | |
3e43a32a MS |
1685 | regcache_descr_handle |
1686 | = gdbarch_data_register_post_init (init_regcache_descr); | |
705152c5 | 1687 | |
f4c5303c | 1688 | observer_attach_target_changed (regcache_observer_target_changed); |
5231c1fd | 1689 | observer_attach_thread_ptid_changed (regcache_thread_ptid_changed); |
f4c5303c | 1690 | |
705152c5 | 1691 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1692 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1693 | |
3e43a32a MS |
1694 | add_cmd ("registers", class_maintenance, maintenance_print_registers, |
1695 | _("Print the internal register configuration.\n" | |
1696 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1697 | add_cmd ("raw-registers", class_maintenance, |
3e43a32a MS |
1698 | maintenance_print_raw_registers, |
1699 | _("Print the internal register configuration " | |
1700 | "including raw values.\n" | |
1701 | "Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1702 | add_cmd ("cooked-registers", class_maintenance, |
3e43a32a MS |
1703 | maintenance_print_cooked_registers, |
1704 | _("Print the internal register configuration " | |
1705 | "including cooked values.\n" | |
1706 | "Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1707 | add_cmd ("register-groups", class_maintenance, |
3e43a32a MS |
1708 | maintenance_print_register_groups, |
1709 | _("Print the internal register configuration " | |
1710 | "including each register's group.\n" | |
1711 | "Takes an optional file parameter."), | |
af030b9a | 1712 | &maintenanceprintlist); |
c21236dc PA |
1713 | add_cmd ("remote-registers", class_maintenance, |
1714 | maintenance_print_remote_registers, _("\ | |
1715 | Print the internal register configuration including each register's\n\ | |
1716 | remote register number and buffer offset in the g/G packets.\n\ | |
1717 | Takes an optional file parameter."), | |
1718 | &maintenanceprintlist); | |
af030b9a | 1719 | |
32178cab | 1720 | } |