Commit | Line | Data |
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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001, |
0fb0cc75 | 4 | 2002, 2004, 2007, 2008, 2009 Free Software Foundation, Inc. |
32178cab MS |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
32178cab MS |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
32178cab MS |
20 | |
21 | #include "defs.h" | |
32178cab MS |
22 | #include "inferior.h" |
23 | #include "target.h" | |
24 | #include "gdbarch.h" | |
705152c5 | 25 | #include "gdbcmd.h" |
4e052eda | 26 | #include "regcache.h" |
b59ff9d5 | 27 | #include "reggroups.h" |
61a0eb5b | 28 | #include "gdb_assert.h" |
b66d6d2e | 29 | #include "gdb_string.h" |
af030b9a | 30 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
f4c5303c | 31 | #include "observer.h" |
32178cab MS |
32 | |
33 | /* | |
34 | * DATA STRUCTURE | |
35 | * | |
36 | * Here is the actual register cache. | |
37 | */ | |
38 | ||
3fadccb3 AC |
39 | /* Per-architecture object describing the layout of a register cache. |
40 | Computed once when the architecture is created */ | |
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; | |
56 | long sizeof_raw_register_valid_p; | |
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 AC |
65 | long sizeof_cooked_registers; |
66 | long sizeof_cooked_register_valid_p; | |
d138e37a AC |
67 | |
68 | /* Offset and size (in 8 bit bytes), of reach register in the | |
69 | register cache. All registers (including those in the range | |
70 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
71 | Assigning all registers an offset makes it possible to keep | |
72 | legacy code, such as that found in read_register_bytes() and | |
73 | write_register_bytes() working. */ | |
3fadccb3 | 74 | long *register_offset; |
3fadccb3 | 75 | long *sizeof_register; |
3fadccb3 | 76 | |
bb425013 AC |
77 | /* Cached table containing the type of each register. */ |
78 | struct type **register_type; | |
3fadccb3 AC |
79 | }; |
80 | ||
3fadccb3 AC |
81 | static void * |
82 | init_regcache_descr (struct gdbarch *gdbarch) | |
83 | { | |
84 | int i; | |
85 | struct regcache_descr *descr; | |
86 | gdb_assert (gdbarch != NULL); | |
87 | ||
bb425013 | 88 | /* Create an initial, zero filled, table. */ |
116f06ea | 89 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 90 | descr->gdbarch = gdbarch; |
3fadccb3 | 91 | |
d138e37a AC |
92 | /* Total size of the register space. The raw registers are mapped |
93 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 94 | either mapped onto raw-registers or memory. */ |
214e098a UW |
95 | descr->nr_cooked_registers = gdbarch_num_regs (gdbarch) |
96 | + gdbarch_num_pseudo_regs (gdbarch); | |
97 | descr->sizeof_cooked_register_valid_p = gdbarch_num_regs (gdbarch) | |
f57d151a | 98 | + gdbarch_num_pseudo_regs |
214e098a | 99 | (gdbarch); |
3fadccb3 | 100 | |
bb425013 | 101 | /* Fill in a table of register types. */ |
116f06ea AC |
102 | descr->register_type |
103 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, struct type *); | |
bb425013 | 104 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 105 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 106 | |
bb1db049 AC |
107 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
108 | into the register cache. */ | |
214e098a | 109 | descr->nr_raw_registers = gdbarch_num_regs (gdbarch); |
bb1db049 AC |
110 | |
111 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
112 | array. This pretects GDB from erant code that accesses elements | |
f57d151a UW |
113 | of the global register_valid_p[] array in the range |
114 | [gdbarch_num_regs .. gdbarch_num_regs + gdbarch_num_pseudo_regs). */ | |
bb1db049 AC |
115 | descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p; |
116 | ||
067df2e5 | 117 | /* Lay out the register cache. |
3fadccb3 | 118 | |
bb425013 AC |
119 | NOTE: cagney/2002-05-22: Only register_type() is used when |
120 | constructing the register cache. It is assumed that the | |
121 | register's raw size, virtual size and type length are all the | |
122 | same. */ | |
3fadccb3 AC |
123 | |
124 | { | |
125 | long offset = 0; | |
116f06ea AC |
126 | descr->sizeof_register |
127 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
128 | descr->register_offset | |
129 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
d138e37a | 130 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 131 | { |
bb425013 | 132 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
133 | descr->register_offset[i] = offset; |
134 | offset += descr->sizeof_register[i]; | |
123a958e | 135 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 AC |
136 | } |
137 | /* Set the real size of the register cache buffer. */ | |
067df2e5 | 138 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
139 | } |
140 | ||
067df2e5 | 141 | /* FIXME: cagney/2002-05-22: Should only need to allocate space for |
ce2826aa | 142 | the raw registers. Unfortunately some code still accesses the |
067df2e5 AC |
143 | register array directly using the global registers[]. Until that |
144 | code has been purged, play safe and over allocating the register | |
145 | buffer. Ulgh! */ | |
146 | descr->sizeof_raw_registers = descr->sizeof_cooked_registers; | |
147 | ||
3fadccb3 AC |
148 | return descr; |
149 | } | |
150 | ||
151 | static struct regcache_descr * | |
152 | regcache_descr (struct gdbarch *gdbarch) | |
153 | { | |
154 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
155 | } | |
156 | ||
bb425013 AC |
157 | /* Utility functions returning useful register attributes stored in |
158 | the regcache descr. */ | |
159 | ||
160 | struct type * | |
161 | register_type (struct gdbarch *gdbarch, int regnum) | |
162 | { | |
163 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
164 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
165 | return descr->register_type[regnum]; | |
166 | } | |
167 | ||
0ed04cce AC |
168 | /* Utility functions returning useful register attributes stored in |
169 | the regcache descr. */ | |
170 | ||
08a617da AC |
171 | int |
172 | register_size (struct gdbarch *gdbarch, int regnum) | |
173 | { | |
174 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
175 | int size; | |
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 | ||
3fadccb3 AC |
183 | /* The register cache for storing raw register values. */ |
184 | ||
185 | struct regcache | |
186 | { | |
187 | struct regcache_descr *descr; | |
51b1fe4e | 188 | /* The register buffers. A read-only register cache can hold the |
f57d151a UW |
189 | full [0 .. gdbarch_num_regs + gdbarch_num_pseudo_regs) while a read/write |
190 | register cache can only hold [0 .. gdbarch_num_regs). */ | |
2d522557 | 191 | gdb_byte *registers; |
b05e64e5 FR |
192 | /* Register cache status: |
193 | register_valid_p[REG] == 0 if REG value is not in the cache | |
194 | > 0 if REG value is in the cache | |
195 | < 0 if REG value is permanently unavailable */ | |
196 | signed char *register_valid_p; | |
2d28509a AC |
197 | /* Is this a read-only cache? A read-only cache is used for saving |
198 | the target's register state (e.g, across an inferior function | |
199 | call or just before forcing a function return). A read-only | |
200 | cache can only be updated via the methods regcache_dup() and | |
201 | regcache_cpy(). The actual contents are determined by the | |
202 | reggroup_save and reggroup_restore methods. */ | |
203 | int readonly_p; | |
594f7785 UW |
204 | /* If this is a read-write cache, which thread's registers is |
205 | it connected to? */ | |
206 | ptid_t ptid; | |
3fadccb3 AC |
207 | }; |
208 | ||
209 | struct regcache * | |
210 | regcache_xmalloc (struct gdbarch *gdbarch) | |
211 | { | |
212 | struct regcache_descr *descr; | |
213 | struct regcache *regcache; | |
214 | gdb_assert (gdbarch != NULL); | |
215 | descr = regcache_descr (gdbarch); | |
216 | regcache = XMALLOC (struct regcache); | |
217 | regcache->descr = descr; | |
51b1fe4e | 218 | regcache->registers |
2d522557 | 219 | = XCALLOC (descr->sizeof_raw_registers, gdb_byte); |
51b1fe4e | 220 | regcache->register_valid_p |
2d522557 | 221 | = XCALLOC (descr->sizeof_raw_register_valid_p, gdb_byte); |
2d28509a | 222 | regcache->readonly_p = 1; |
594f7785 | 223 | regcache->ptid = minus_one_ptid; |
3fadccb3 AC |
224 | return regcache; |
225 | } | |
226 | ||
227 | void | |
228 | regcache_xfree (struct regcache *regcache) | |
229 | { | |
230 | if (regcache == NULL) | |
231 | return; | |
51b1fe4e AC |
232 | xfree (regcache->registers); |
233 | xfree (regcache->register_valid_p); | |
3fadccb3 AC |
234 | xfree (regcache); |
235 | } | |
236 | ||
b9362cc7 | 237 | static void |
36160dc4 AC |
238 | do_regcache_xfree (void *data) |
239 | { | |
240 | regcache_xfree (data); | |
241 | } | |
242 | ||
243 | struct cleanup * | |
244 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
245 | { | |
246 | return make_cleanup (do_regcache_xfree, regcache); | |
247 | } | |
248 | ||
41d35cb0 MK |
249 | /* Return REGCACHE's architecture. */ |
250 | ||
251 | struct gdbarch * | |
252 | get_regcache_arch (const struct regcache *regcache) | |
253 | { | |
254 | return regcache->descr->gdbarch; | |
255 | } | |
256 | ||
51b1fe4e AC |
257 | /* Return a pointer to register REGNUM's buffer cache. */ |
258 | ||
2d522557 | 259 | static gdb_byte * |
9a661b68 | 260 | register_buffer (const struct regcache *regcache, int regnum) |
51b1fe4e AC |
261 | { |
262 | return regcache->registers + regcache->descr->register_offset[regnum]; | |
263 | } | |
264 | ||
2d28509a | 265 | void |
5602984a AC |
266 | regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read, |
267 | void *src) | |
2d28509a AC |
268 | { |
269 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
2d522557 | 270 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 271 | int regnum; |
2d28509a | 272 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 273 | end up trying to write the register values back out to the |
2d28509a | 274 | target. */ |
2d28509a AC |
275 | gdb_assert (dst->readonly_p); |
276 | /* Clear the dest. */ | |
277 | memset (dst->registers, 0, dst->descr->sizeof_cooked_registers); | |
278 | memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p); | |
279 | /* Copy over any registers (identified by their membership in the | |
f57d151a UW |
280 | save_reggroup) and mark them as valid. The full [0 .. gdbarch_num_regs + |
281 | gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a | 282 | to save/restore `cooked' registers that live in memory. */ |
2d28509a AC |
283 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) |
284 | { | |
285 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
286 | { | |
5602984a AC |
287 | int valid = cooked_read (src, regnum, buf); |
288 | if (valid) | |
289 | { | |
290 | memcpy (register_buffer (dst, regnum), buf, | |
291 | register_size (gdbarch, regnum)); | |
292 | dst->register_valid_p[regnum] = 1; | |
293 | } | |
2d28509a AC |
294 | } |
295 | } | |
296 | } | |
297 | ||
298 | void | |
5602984a AC |
299 | regcache_restore (struct regcache *dst, |
300 | regcache_cooked_read_ftype *cooked_read, | |
2d522557 | 301 | void *cooked_read_context) |
2d28509a AC |
302 | { |
303 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
2d522557 | 304 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 305 | int regnum; |
5602984a AC |
306 | /* The dst had better not be read-only. If it is, the `restore' |
307 | doesn't make much sense. */ | |
2d28509a | 308 | gdb_assert (!dst->readonly_p); |
2d28509a | 309 | /* Copy over any registers, being careful to only restore those that |
f57d151a UW |
310 | were both saved and need to be restored. The full [0 .. gdbarch_num_regs |
311 | + gdbarch_num_pseudo_regs) range is checked since some architectures need | |
5602984a AC |
312 | to save/restore `cooked' registers that live in memory. */ |
313 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) | |
2d28509a | 314 | { |
5602984a | 315 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 316 | { |
2d522557 | 317 | int valid = cooked_read (cooked_read_context, regnum, buf); |
5602984a AC |
318 | if (valid) |
319 | regcache_cooked_write (dst, regnum, buf); | |
2d28509a AC |
320 | } |
321 | } | |
322 | } | |
323 | ||
5602984a | 324 | static int |
2d522557 | 325 | do_cooked_read (void *src, int regnum, gdb_byte *buf) |
5602984a AC |
326 | { |
327 | struct regcache *regcache = src; | |
6f4e5a41 | 328 | if (!regcache->register_valid_p[regnum] && regcache->readonly_p) |
5602984a AC |
329 | /* Don't even think about fetching a register from a read-only |
330 | cache when the register isn't yet valid. There isn't a target | |
331 | from which the register value can be fetched. */ | |
332 | return 0; | |
333 | regcache_cooked_read (regcache, regnum, buf); | |
334 | return 1; | |
335 | } | |
336 | ||
337 | ||
3fadccb3 AC |
338 | void |
339 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
340 | { | |
341 | int i; | |
2d522557 | 342 | gdb_byte *buf; |
3fadccb3 AC |
343 | gdb_assert (src != NULL && dst != NULL); |
344 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
345 | gdb_assert (src != dst); | |
2d28509a AC |
346 | gdb_assert (src->readonly_p || dst->readonly_p); |
347 | if (!src->readonly_p) | |
5602984a | 348 | regcache_save (dst, do_cooked_read, src); |
2d28509a | 349 | else if (!dst->readonly_p) |
5602984a | 350 | regcache_restore (dst, do_cooked_read, src); |
2d28509a AC |
351 | else |
352 | regcache_cpy_no_passthrough (dst, src); | |
3fadccb3 AC |
353 | } |
354 | ||
355 | void | |
356 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
357 | { | |
358 | int i; | |
359 | gdb_assert (src != NULL && dst != NULL); | |
360 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
361 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
594f7785 | 362 | move of data into the current regcache. Doing this would be |
9564ee9f | 363 | silly - it would mean that valid_p would be completely invalid. */ |
594f7785 | 364 | gdb_assert (dst->readonly_p); |
51b1fe4e AC |
365 | memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers); |
366 | memcpy (dst->register_valid_p, src->register_valid_p, | |
3fadccb3 AC |
367 | dst->descr->sizeof_raw_register_valid_p); |
368 | } | |
369 | ||
370 | struct regcache * | |
371 | regcache_dup (struct regcache *src) | |
372 | { | |
373 | struct regcache *newbuf; | |
3fadccb3 AC |
374 | newbuf = regcache_xmalloc (src->descr->gdbarch); |
375 | regcache_cpy (newbuf, src); | |
376 | return newbuf; | |
377 | } | |
378 | ||
379 | struct regcache * | |
380 | regcache_dup_no_passthrough (struct regcache *src) | |
381 | { | |
382 | struct regcache *newbuf; | |
3fadccb3 AC |
383 | newbuf = regcache_xmalloc (src->descr->gdbarch); |
384 | regcache_cpy_no_passthrough (newbuf, src); | |
385 | return newbuf; | |
386 | } | |
387 | ||
388 | int | |
6ed7ea50 | 389 | regcache_valid_p (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
390 | { |
391 | gdb_assert (regcache != NULL); | |
6ed7ea50 UW |
392 | gdb_assert (regnum >= 0); |
393 | if (regcache->readonly_p) | |
394 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); | |
395 | else | |
396 | gdb_assert (regnum < regcache->descr->nr_raw_registers); | |
397 | ||
51b1fe4e | 398 | return regcache->register_valid_p[regnum]; |
3fadccb3 AC |
399 | } |
400 | ||
9c5ea4d9 UW |
401 | void |
402 | regcache_invalidate (struct regcache *regcache, int regnum) | |
403 | { | |
404 | gdb_assert (regcache != NULL); | |
405 | gdb_assert (regnum >= 0); | |
406 | gdb_assert (!regcache->readonly_p); | |
407 | gdb_assert (regnum < regcache->descr->nr_raw_registers); | |
408 | regcache->register_valid_p[regnum] = 0; | |
409 | } | |
410 | ||
411 | ||
3fadccb3 AC |
412 | /* Global structure containing the current regcache. */ |
413 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
8262ee23 | 414 | deprecated_register_valid[] currently point into this structure. */ |
594f7785 | 415 | static struct regcache *current_regcache; |
3fadccb3 | 416 | |
5ebd2499 | 417 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
418 | recording if the register values have been changed (eg. by the |
419 | user). Therefore all registers must be written back to the | |
420 | target when appropriate. */ | |
421 | ||
594f7785 UW |
422 | struct regcache *get_thread_regcache (ptid_t ptid) |
423 | { | |
424 | /* NOTE: uweigand/2007-05-05: We need to detect the thread's | |
425 | current architecture at this point. */ | |
426 | struct gdbarch *thread_gdbarch = current_gdbarch; | |
427 | ||
428 | if (current_regcache && ptid_equal (current_regcache->ptid, ptid) | |
429 | && get_regcache_arch (current_regcache) == thread_gdbarch) | |
430 | return current_regcache; | |
431 | ||
432 | if (current_regcache) | |
433 | regcache_xfree (current_regcache); | |
434 | ||
435 | current_regcache = regcache_xmalloc (thread_gdbarch); | |
436 | current_regcache->readonly_p = 0; | |
437 | current_regcache->ptid = ptid; | |
438 | ||
439 | return current_regcache; | |
440 | } | |
441 | ||
442 | struct regcache *get_current_regcache (void) | |
443 | { | |
444 | return get_thread_regcache (inferior_ptid); | |
445 | } | |
32178cab | 446 | |
32178cab | 447 | |
f4c5303c OF |
448 | /* Observer for the target_changed event. */ |
449 | ||
2c0b251b | 450 | static void |
f4c5303c OF |
451 | regcache_observer_target_changed (struct target_ops *target) |
452 | { | |
453 | registers_changed (); | |
454 | } | |
455 | ||
5231c1fd PA |
456 | /* Update global variables old ptids to hold NEW_PTID if they were |
457 | holding OLD_PTID. */ | |
458 | static void | |
459 | regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid) | |
460 | { | |
461 | if (current_regcache != NULL | |
462 | && ptid_equal (current_regcache->ptid, old_ptid)) | |
463 | current_regcache->ptid = new_ptid; | |
464 | } | |
465 | ||
32178cab MS |
466 | /* Low level examining and depositing of registers. |
467 | ||
468 | The caller is responsible for making sure that the inferior is | |
469 | stopped before calling the fetching routines, or it will get | |
470 | garbage. (a change from GDB version 3, in which the caller got the | |
471 | value from the last stop). */ | |
472 | ||
473 | /* REGISTERS_CHANGED () | |
474 | ||
475 | Indicate that registers may have changed, so invalidate the cache. */ | |
476 | ||
477 | void | |
478 | registers_changed (void) | |
479 | { | |
480 | int i; | |
32178cab | 481 | |
594f7785 UW |
482 | regcache_xfree (current_regcache); |
483 | current_regcache = NULL; | |
32178cab | 484 | |
a5d9d57d DJ |
485 | /* Need to forget about any frames we have cached, too. */ |
486 | reinit_frame_cache (); | |
487 | ||
32178cab MS |
488 | /* Force cleanup of any alloca areas if using C alloca instead of |
489 | a builtin alloca. This particular call is used to clean up | |
490 | areas allocated by low level target code which may build up | |
491 | during lengthy interactions between gdb and the target before | |
492 | gdb gives control to the user (ie watchpoints). */ | |
493 | alloca (0); | |
32178cab MS |
494 | } |
495 | ||
32178cab | 496 | |
61a0eb5b | 497 | void |
2d522557 | 498 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
61a0eb5b | 499 | { |
3fadccb3 AC |
500 | gdb_assert (regcache != NULL && buf != NULL); |
501 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
3fadccb3 AC |
502 | /* Make certain that the register cache is up-to-date with respect |
503 | to the current thread. This switching shouldn't be necessary | |
504 | only there is still only one target side register cache. Sigh! | |
505 | On the bright side, at least there is a regcache object. */ | |
2d28509a | 506 | if (!regcache->readonly_p) |
3fadccb3 | 507 | { |
594f7785 | 508 | if (!regcache_valid_p (regcache, regnum)) |
3fadccb3 | 509 | { |
594f7785 UW |
510 | struct cleanup *old_chain = save_inferior_ptid (); |
511 | inferior_ptid = regcache->ptid; | |
512 | target_fetch_registers (regcache, regnum); | |
513 | do_cleanups (old_chain); | |
3fadccb3 | 514 | } |
0a8146bf AC |
515 | #if 0 |
516 | /* FIXME: cagney/2004-08-07: At present a number of targets | |
04c663e3 DA |
517 | forget (or didn't know that they needed) to set this leading to |
518 | panics. Also is the problem that targets need to indicate | |
0a8146bf AC |
519 | that a register is in one of the possible states: valid, |
520 | undefined, unknown. The last of which isn't yet | |
521 | possible. */ | |
9c5ea4d9 | 522 | gdb_assert (regcache_valid_p (regcache, regnum)); |
0a8146bf | 523 | #endif |
3fadccb3 AC |
524 | } |
525 | /* Copy the value directly into the register cache. */ | |
51b1fe4e | 526 | memcpy (buf, register_buffer (regcache, regnum), |
3fadccb3 | 527 | regcache->descr->sizeof_register[regnum]); |
61a0eb5b AC |
528 | } |
529 | ||
28fc6740 AC |
530 | void |
531 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
532 | { | |
2d522557 | 533 | gdb_byte *buf; |
28fc6740 AC |
534 | gdb_assert (regcache != NULL); |
535 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
536 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
537 | regcache_raw_read (regcache, regnum, buf); | |
538 | (*val) = extract_signed_integer (buf, | |
539 | regcache->descr->sizeof_register[regnum]); | |
540 | } | |
541 | ||
542 | void | |
543 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
544 | ULONGEST *val) | |
545 | { | |
2d522557 | 546 | gdb_byte *buf; |
28fc6740 AC |
547 | gdb_assert (regcache != NULL); |
548 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
549 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
550 | regcache_raw_read (regcache, regnum, buf); | |
551 | (*val) = extract_unsigned_integer (buf, | |
552 | regcache->descr->sizeof_register[regnum]); | |
553 | } | |
554 | ||
c00dcbe9 MK |
555 | void |
556 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
557 | { | |
558 | void *buf; | |
559 | gdb_assert (regcache != NULL); | |
560 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
561 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
562 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
563 | regcache_raw_write (regcache, regnum, buf); | |
564 | } | |
565 | ||
566 | void | |
567 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
568 | ULONGEST val) | |
569 | { | |
570 | void *buf; | |
571 | gdb_assert (regcache != NULL); | |
572 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
573 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
574 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
575 | regcache_raw_write (regcache, regnum, buf); | |
576 | } | |
577 | ||
68365089 | 578 | void |
2d522557 | 579 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
68365089 | 580 | { |
d138e37a | 581 | gdb_assert (regnum >= 0); |
68365089 AC |
582 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
583 | if (regnum < regcache->descr->nr_raw_registers) | |
584 | regcache_raw_read (regcache, regnum, buf); | |
2d28509a AC |
585 | else if (regcache->readonly_p |
586 | && regnum < regcache->descr->nr_cooked_registers | |
587 | && regcache->register_valid_p[regnum]) | |
b2fa5097 | 588 | /* Read-only register cache, perhaps the cooked value was cached? */ |
2d28509a AC |
589 | memcpy (buf, register_buffer (regcache, regnum), |
590 | regcache->descr->sizeof_register[regnum]); | |
d138e37a | 591 | else |
68365089 AC |
592 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
593 | regnum, buf); | |
61a0eb5b AC |
594 | } |
595 | ||
a378f419 AC |
596 | void |
597 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
598 | LONGEST *val) | |
599 | { | |
2d522557 | 600 | gdb_byte *buf; |
a378f419 | 601 | gdb_assert (regcache != NULL); |
a66a9c23 | 602 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
603 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
604 | regcache_cooked_read (regcache, regnum, buf); | |
605 | (*val) = extract_signed_integer (buf, | |
606 | regcache->descr->sizeof_register[regnum]); | |
607 | } | |
608 | ||
609 | void | |
610 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
611 | ULONGEST *val) | |
612 | { | |
2d522557 | 613 | gdb_byte *buf; |
a378f419 | 614 | gdb_assert (regcache != NULL); |
a66a9c23 | 615 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
616 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
617 | regcache_cooked_read (regcache, regnum, buf); | |
618 | (*val) = extract_unsigned_integer (buf, | |
619 | regcache->descr->sizeof_register[regnum]); | |
620 | } | |
621 | ||
a66a9c23 AC |
622 | void |
623 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
624 | LONGEST val) | |
625 | { | |
626 | void *buf; | |
627 | gdb_assert (regcache != NULL); | |
628 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
629 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
630 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
631 | regcache_cooked_write (regcache, regnum, buf); | |
632 | } | |
633 | ||
634 | void | |
635 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
636 | ULONGEST val) | |
637 | { | |
638 | void *buf; | |
639 | gdb_assert (regcache != NULL); | |
640 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
641 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
642 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
643 | regcache_cooked_write (regcache, regnum, buf); | |
644 | } | |
645 | ||
61a0eb5b | 646 | void |
2d522557 AC |
647 | regcache_raw_write (struct regcache *regcache, int regnum, |
648 | const gdb_byte *buf) | |
61a0eb5b | 649 | { |
594f7785 UW |
650 | struct cleanup *old_chain; |
651 | ||
3fadccb3 AC |
652 | gdb_assert (regcache != NULL && buf != NULL); |
653 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
2d28509a | 654 | gdb_assert (!regcache->readonly_p); |
3fadccb3 | 655 | |
3fadccb3 AC |
656 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
657 | change the registers array if something writes to this register. */ | |
214e098a | 658 | if (gdbarch_cannot_store_register (get_regcache_arch (regcache), regnum)) |
3fadccb3 AC |
659 | return; |
660 | ||
3fadccb3 AC |
661 | /* If we have a valid copy of the register, and new value == old |
662 | value, then don't bother doing the actual store. */ | |
663 | if (regcache_valid_p (regcache, regnum) | |
664 | && (memcmp (register_buffer (regcache, regnum), buf, | |
665 | regcache->descr->sizeof_register[regnum]) == 0)) | |
666 | return; | |
667 | ||
594f7785 UW |
668 | old_chain = save_inferior_ptid (); |
669 | inferior_ptid = regcache->ptid; | |
670 | ||
316f2060 | 671 | target_prepare_to_store (regcache); |
3fadccb3 AC |
672 | memcpy (register_buffer (regcache, regnum), buf, |
673 | regcache->descr->sizeof_register[regnum]); | |
51b1fe4e | 674 | regcache->register_valid_p[regnum] = 1; |
56be3814 | 675 | target_store_registers (regcache, regnum); |
594f7785 UW |
676 | |
677 | do_cleanups (old_chain); | |
61a0eb5b AC |
678 | } |
679 | ||
68365089 | 680 | void |
2d522557 AC |
681 | regcache_cooked_write (struct regcache *regcache, int regnum, |
682 | const gdb_byte *buf) | |
68365089 | 683 | { |
d138e37a | 684 | gdb_assert (regnum >= 0); |
68365089 AC |
685 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
686 | if (regnum < regcache->descr->nr_raw_registers) | |
687 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 688 | else |
68365089 | 689 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 690 | regnum, buf); |
61a0eb5b AC |
691 | } |
692 | ||
06c0b04e AC |
693 | /* Perform a partial register transfer using a read, modify, write |
694 | operation. */ | |
695 | ||
696 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
697 | void *buf); | |
698 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
699 | const void *buf); | |
700 | ||
b9362cc7 | 701 | static void |
06c0b04e AC |
702 | regcache_xfer_part (struct regcache *regcache, int regnum, |
703 | int offset, int len, void *in, const void *out, | |
2d522557 AC |
704 | void (*read) (struct regcache *regcache, int regnum, |
705 | gdb_byte *buf), | |
706 | void (*write) (struct regcache *regcache, int regnum, | |
707 | const gdb_byte *buf)) | |
06c0b04e AC |
708 | { |
709 | struct regcache_descr *descr = regcache->descr; | |
fc1a4b47 | 710 | gdb_byte reg[MAX_REGISTER_SIZE]; |
06c0b04e AC |
711 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); |
712 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
713 | /* Something to do? */ | |
714 | if (offset + len == 0) | |
715 | return; | |
716 | /* Read (when needed) ... */ | |
717 | if (in != NULL | |
718 | || offset > 0 | |
719 | || offset + len < descr->sizeof_register[regnum]) | |
720 | { | |
721 | gdb_assert (read != NULL); | |
722 | read (regcache, regnum, reg); | |
723 | } | |
724 | /* ... modify ... */ | |
725 | if (in != NULL) | |
726 | memcpy (in, reg + offset, len); | |
727 | if (out != NULL) | |
728 | memcpy (reg + offset, out, len); | |
729 | /* ... write (when needed). */ | |
730 | if (out != NULL) | |
731 | { | |
732 | gdb_assert (write != NULL); | |
733 | write (regcache, regnum, reg); | |
734 | } | |
735 | } | |
736 | ||
737 | void | |
738 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
2d522557 | 739 | int offset, int len, gdb_byte *buf) |
06c0b04e AC |
740 | { |
741 | struct regcache_descr *descr = regcache->descr; | |
742 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
743 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
744 | regcache_raw_read, regcache_raw_write); | |
745 | } | |
746 | ||
747 | void | |
748 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 749 | int offset, int len, const gdb_byte *buf) |
06c0b04e AC |
750 | { |
751 | struct regcache_descr *descr = regcache->descr; | |
752 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
753 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
754 | regcache_raw_read, regcache_raw_write); | |
755 | } | |
756 | ||
757 | void | |
758 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
2d522557 | 759 | int offset, int len, gdb_byte *buf) |
06c0b04e AC |
760 | { |
761 | struct regcache_descr *descr = regcache->descr; | |
762 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
763 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
764 | regcache_cooked_read, regcache_cooked_write); | |
765 | } | |
766 | ||
767 | void | |
768 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 769 | int offset, int len, const gdb_byte *buf) |
06c0b04e AC |
770 | { |
771 | struct regcache_descr *descr = regcache->descr; | |
772 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
773 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
774 | regcache_cooked_read, regcache_cooked_write); | |
775 | } | |
32178cab | 776 | |
a16d75cc | 777 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
778 | |
779 | void | |
6618125d | 780 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
9a661b68 MK |
781 | { |
782 | void *regbuf; | |
783 | size_t size; | |
784 | ||
a16d75cc | 785 | gdb_assert (regcache != NULL); |
9a661b68 MK |
786 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); |
787 | gdb_assert (!regcache->readonly_p); | |
788 | ||
9a661b68 MK |
789 | regbuf = register_buffer (regcache, regnum); |
790 | size = regcache->descr->sizeof_register[regnum]; | |
791 | ||
792 | if (buf) | |
793 | memcpy (regbuf, buf, size); | |
794 | else | |
795 | memset (regbuf, 0, size); | |
796 | ||
797 | /* Mark the register as cached. */ | |
798 | regcache->register_valid_p[regnum] = 1; | |
799 | } | |
800 | ||
801 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ | |
802 | ||
803 | void | |
6618125d | 804 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
9a661b68 MK |
805 | { |
806 | const void *regbuf; | |
807 | size_t size; | |
808 | ||
809 | gdb_assert (regcache != NULL && buf != NULL); | |
810 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
811 | ||
812 | regbuf = register_buffer (regcache, regnum); | |
813 | size = regcache->descr->sizeof_register[regnum]; | |
814 | memcpy (buf, regbuf, size); | |
815 | } | |
816 | ||
193cb69f | 817 | |
515630c5 | 818 | /* Special handling for register PC. */ |
32178cab MS |
819 | |
820 | CORE_ADDR | |
515630c5 | 821 | regcache_read_pc (struct regcache *regcache) |
32178cab | 822 | { |
61a1198a UW |
823 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
824 | ||
32178cab MS |
825 | CORE_ADDR pc_val; |
826 | ||
61a1198a UW |
827 | if (gdbarch_read_pc_p (gdbarch)) |
828 | pc_val = gdbarch_read_pc (gdbarch, regcache); | |
cde9ea48 | 829 | /* Else use per-frame method on get_current_frame. */ |
214e098a | 830 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
cde9ea48 | 831 | { |
61a1198a | 832 | ULONGEST raw_val; |
3e8c568d | 833 | regcache_cooked_read_unsigned (regcache, |
214e098a | 834 | gdbarch_pc_regnum (gdbarch), |
3e8c568d | 835 | &raw_val); |
214e098a | 836 | pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val); |
cde9ea48 AC |
837 | } |
838 | else | |
515630c5 UW |
839 | internal_error (__FILE__, __LINE__, |
840 | _("regcache_read_pc: Unable to find PC")); | |
32178cab MS |
841 | return pc_val; |
842 | } | |
843 | ||
844 | CORE_ADDR | |
845 | read_pc (void) | |
846 | { | |
515630c5 | 847 | return regcache_read_pc (get_current_regcache ()); |
32178cab MS |
848 | } |
849 | ||
32178cab | 850 | void |
515630c5 | 851 | regcache_write_pc (struct regcache *regcache, CORE_ADDR pc) |
32178cab | 852 | { |
61a1198a UW |
853 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
854 | ||
61a1198a UW |
855 | if (gdbarch_write_pc_p (gdbarch)) |
856 | gdbarch_write_pc (gdbarch, regcache, pc); | |
214e098a | 857 | else if (gdbarch_pc_regnum (gdbarch) >= 0) |
3e8c568d | 858 | regcache_cooked_write_unsigned (regcache, |
214e098a | 859 | gdbarch_pc_regnum (gdbarch), pc); |
61a1198a UW |
860 | else |
861 | internal_error (__FILE__, __LINE__, | |
515630c5 | 862 | _("regcache_write_pc: Unable to update PC")); |
32178cab MS |
863 | } |
864 | ||
865 | void | |
866 | write_pc (CORE_ADDR pc) | |
867 | { | |
515630c5 | 868 | regcache_write_pc (get_current_regcache (), pc); |
32178cab MS |
869 | } |
870 | ||
32178cab | 871 | |
705152c5 MS |
872 | static void |
873 | reg_flush_command (char *command, int from_tty) | |
874 | { | |
875 | /* Force-flush the register cache. */ | |
876 | registers_changed (); | |
877 | if (from_tty) | |
a3f17187 | 878 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
879 | } |
880 | ||
af030b9a AC |
881 | static void |
882 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
883 | const unsigned char *buf, long len) | |
884 | { | |
885 | int i; | |
886 | switch (endian) | |
887 | { | |
888 | case BFD_ENDIAN_BIG: | |
889 | for (i = 0; i < len; i++) | |
890 | fprintf_unfiltered (file, "%02x", buf[i]); | |
891 | break; | |
892 | case BFD_ENDIAN_LITTLE: | |
893 | for (i = len - 1; i >= 0; i--) | |
894 | fprintf_unfiltered (file, "%02x", buf[i]); | |
895 | break; | |
896 | default: | |
e2e0b3e5 | 897 | internal_error (__FILE__, __LINE__, _("Bad switch")); |
af030b9a AC |
898 | } |
899 | } | |
900 | ||
901 | enum regcache_dump_what | |
902 | { | |
b59ff9d5 | 903 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups |
af030b9a AC |
904 | }; |
905 | ||
906 | static void | |
907 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
908 | enum regcache_dump_what what_to_dump) | |
909 | { | |
910 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
b59ff9d5 | 911 | struct gdbarch *gdbarch = regcache->descr->gdbarch; |
af030b9a AC |
912 | int regnum; |
913 | int footnote_nr = 0; | |
914 | int footnote_register_size = 0; | |
915 | int footnote_register_offset = 0; | |
916 | int footnote_register_type_name_null = 0; | |
917 | long register_offset = 0; | |
123a958e | 918 | unsigned char buf[MAX_REGISTER_SIZE]; |
af030b9a AC |
919 | |
920 | #if 0 | |
af030b9a AC |
921 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
922 | regcache->descr->nr_raw_registers); | |
923 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
924 | regcache->descr->nr_cooked_registers); | |
925 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
926 | regcache->descr->sizeof_raw_registers); | |
927 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
928 | regcache->descr->sizeof_raw_register_valid_p); | |
f57d151a | 929 | fprintf_unfiltered (file, "gdbarch_num_regs %d\n", |
214e098a | 930 | gdbarch_num_regs (gdbarch)); |
f57d151a | 931 | fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n", |
214e098a | 932 | gdbarch_num_pseudo_regs (gdbarch)); |
af030b9a AC |
933 | #endif |
934 | ||
935 | gdb_assert (regcache->descr->nr_cooked_registers | |
214e098a UW |
936 | == (gdbarch_num_regs (gdbarch) |
937 | + gdbarch_num_pseudo_regs (gdbarch))); | |
af030b9a AC |
938 | |
939 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
940 | { | |
941 | /* Name. */ | |
942 | if (regnum < 0) | |
943 | fprintf_unfiltered (file, " %-10s", "Name"); | |
944 | else | |
945 | { | |
214e098a | 946 | const char *p = gdbarch_register_name (gdbarch, regnum); |
af030b9a AC |
947 | if (p == NULL) |
948 | p = ""; | |
949 | else if (p[0] == '\0') | |
950 | p = "''"; | |
951 | fprintf_unfiltered (file, " %-10s", p); | |
952 | } | |
953 | ||
954 | /* Number. */ | |
955 | if (regnum < 0) | |
956 | fprintf_unfiltered (file, " %4s", "Nr"); | |
957 | else | |
958 | fprintf_unfiltered (file, " %4d", regnum); | |
959 | ||
960 | /* Relative number. */ | |
961 | if (regnum < 0) | |
962 | fprintf_unfiltered (file, " %4s", "Rel"); | |
214e098a | 963 | else if (regnum < gdbarch_num_regs (gdbarch)) |
af030b9a AC |
964 | fprintf_unfiltered (file, " %4d", regnum); |
965 | else | |
f57d151a | 966 | fprintf_unfiltered (file, " %4d", |
214e098a | 967 | (regnum - gdbarch_num_regs (gdbarch))); |
af030b9a AC |
968 | |
969 | /* Offset. */ | |
970 | if (regnum < 0) | |
971 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
972 | else | |
973 | { | |
974 | fprintf_unfiltered (file, " %6ld", | |
975 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 976 | if (register_offset != regcache->descr->register_offset[regnum] |
d3b22ed5 AC |
977 | || (regnum > 0 |
978 | && (regcache->descr->register_offset[regnum] | |
979 | != (regcache->descr->register_offset[regnum - 1] | |
980 | + regcache->descr->sizeof_register[regnum - 1]))) | |
981 | ) | |
af030b9a AC |
982 | { |
983 | if (!footnote_register_offset) | |
984 | footnote_register_offset = ++footnote_nr; | |
985 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
986 | } | |
987 | else | |
988 | fprintf_unfiltered (file, " "); | |
989 | register_offset = (regcache->descr->register_offset[regnum] | |
990 | + regcache->descr->sizeof_register[regnum]); | |
991 | } | |
992 | ||
993 | /* Size. */ | |
994 | if (regnum < 0) | |
995 | fprintf_unfiltered (file, " %5s ", "Size"); | |
996 | else | |
01e1877c AC |
997 | fprintf_unfiltered (file, " %5ld", |
998 | regcache->descr->sizeof_register[regnum]); | |
af030b9a AC |
999 | |
1000 | /* Type. */ | |
b59ff9d5 AC |
1001 | { |
1002 | const char *t; | |
1003 | if (regnum < 0) | |
1004 | t = "Type"; | |
1005 | else | |
1006 | { | |
1007 | static const char blt[] = "builtin_type"; | |
1008 | t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum)); | |
1009 | if (t == NULL) | |
1010 | { | |
1011 | char *n; | |
1012 | if (!footnote_register_type_name_null) | |
1013 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1014 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1015 | make_cleanup (xfree, n); |
1016 | t = n; | |
1017 | } | |
1018 | /* Chop a leading builtin_type. */ | |
1019 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1020 | t += strlen (blt); | |
1021 | } | |
1022 | fprintf_unfiltered (file, " %-15s", t); | |
1023 | } | |
1024 | ||
1025 | /* Leading space always present. */ | |
1026 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1027 | |
1028 | /* Value, raw. */ | |
1029 | if (what_to_dump == regcache_dump_raw) | |
1030 | { | |
1031 | if (regnum < 0) | |
1032 | fprintf_unfiltered (file, "Raw value"); | |
1033 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1034 | fprintf_unfiltered (file, "<cooked>"); | |
1035 | else if (!regcache_valid_p (regcache, regnum)) | |
1036 | fprintf_unfiltered (file, "<invalid>"); | |
1037 | else | |
1038 | { | |
1039 | regcache_raw_read (regcache, regnum, buf); | |
1040 | fprintf_unfiltered (file, "0x"); | |
0d20ae72 | 1041 | dump_endian_bytes (file, |
214e098a | 1042 | gdbarch_byte_order (gdbarch), buf, |
01e1877c | 1043 | regcache->descr->sizeof_register[regnum]); |
af030b9a AC |
1044 | } |
1045 | } | |
1046 | ||
1047 | /* Value, cooked. */ | |
1048 | if (what_to_dump == regcache_dump_cooked) | |
1049 | { | |
1050 | if (regnum < 0) | |
1051 | fprintf_unfiltered (file, "Cooked value"); | |
1052 | else | |
1053 | { | |
1054 | regcache_cooked_read (regcache, regnum, buf); | |
1055 | fprintf_unfiltered (file, "0x"); | |
0d20ae72 | 1056 | dump_endian_bytes (file, |
214e098a | 1057 | gdbarch_byte_order (gdbarch), buf, |
01e1877c | 1058 | regcache->descr->sizeof_register[regnum]); |
af030b9a AC |
1059 | } |
1060 | } | |
1061 | ||
b59ff9d5 AC |
1062 | /* Group members. */ |
1063 | if (what_to_dump == regcache_dump_groups) | |
1064 | { | |
1065 | if (regnum < 0) | |
1066 | fprintf_unfiltered (file, "Groups"); | |
1067 | else | |
1068 | { | |
b59ff9d5 | 1069 | const char *sep = ""; |
6c7d17ba AC |
1070 | struct reggroup *group; |
1071 | for (group = reggroup_next (gdbarch, NULL); | |
1072 | group != NULL; | |
1073 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1074 | { |
6c7d17ba | 1075 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1076 | { |
6c7d17ba | 1077 | fprintf_unfiltered (file, "%s%s", sep, reggroup_name (group)); |
b59ff9d5 AC |
1078 | sep = ","; |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | } | |
1083 | ||
af030b9a AC |
1084 | fprintf_unfiltered (file, "\n"); |
1085 | } | |
1086 | ||
1087 | if (footnote_register_size) | |
1088 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1089 | footnote_register_size); | |
1090 | if (footnote_register_offset) | |
1091 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1092 | footnote_register_offset); | |
1093 | if (footnote_register_type_name_null) | |
1094 | fprintf_unfiltered (file, | |
1095 | "*%d: Register type's name NULL.\n", | |
1096 | footnote_register_type_name_null); | |
1097 | do_cleanups (cleanups); | |
1098 | } | |
1099 | ||
1100 | static void | |
1101 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1102 | { | |
1103 | if (args == NULL) | |
28c38f10 | 1104 | regcache_dump (get_current_regcache (), gdb_stdout, what_to_dump); |
af030b9a AC |
1105 | else |
1106 | { | |
724b958c | 1107 | struct cleanup *cleanups; |
af030b9a AC |
1108 | struct ui_file *file = gdb_fopen (args, "w"); |
1109 | if (file == NULL) | |
e2e0b3e5 | 1110 | perror_with_name (_("maintenance print architecture")); |
724b958c | 1111 | cleanups = make_cleanup_ui_file_delete (file); |
28c38f10 | 1112 | regcache_dump (get_current_regcache (), file, what_to_dump); |
724b958c | 1113 | do_cleanups (cleanups); |
af030b9a AC |
1114 | } |
1115 | } | |
1116 | ||
1117 | static void | |
1118 | maintenance_print_registers (char *args, int from_tty) | |
1119 | { | |
1120 | regcache_print (args, regcache_dump_none); | |
1121 | } | |
1122 | ||
1123 | static void | |
1124 | maintenance_print_raw_registers (char *args, int from_tty) | |
1125 | { | |
1126 | regcache_print (args, regcache_dump_raw); | |
1127 | } | |
1128 | ||
1129 | static void | |
1130 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1131 | { | |
1132 | regcache_print (args, regcache_dump_cooked); | |
1133 | } | |
1134 | ||
b59ff9d5 AC |
1135 | static void |
1136 | maintenance_print_register_groups (char *args, int from_tty) | |
1137 | { | |
1138 | regcache_print (args, regcache_dump_groups); | |
1139 | } | |
1140 | ||
b9362cc7 AC |
1141 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1142 | ||
32178cab MS |
1143 | void |
1144 | _initialize_regcache (void) | |
1145 | { | |
030f20e1 | 1146 | regcache_descr_handle = gdbarch_data_register_post_init (init_regcache_descr); |
705152c5 | 1147 | |
f4c5303c | 1148 | observer_attach_target_changed (regcache_observer_target_changed); |
5231c1fd | 1149 | observer_attach_thread_ptid_changed (regcache_thread_ptid_changed); |
f4c5303c | 1150 | |
705152c5 | 1151 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1152 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 | 1153 | |
1a966eab AC |
1154 | add_cmd ("registers", class_maintenance, maintenance_print_registers, _("\ |
1155 | Print the internal register configuration.\n\ | |
1156 | Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1157 | add_cmd ("raw-registers", class_maintenance, |
1a966eab AC |
1158 | maintenance_print_raw_registers, _("\ |
1159 | Print the internal register configuration including raw values.\n\ | |
1160 | Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1161 | add_cmd ("cooked-registers", class_maintenance, |
1a966eab AC |
1162 | maintenance_print_cooked_registers, _("\ |
1163 | Print the internal register configuration including cooked values.\n\ | |
1164 | Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1165 | add_cmd ("register-groups", class_maintenance, |
1a966eab AC |
1166 | maintenance_print_register_groups, _("\ |
1167 | Print the internal register configuration including each register's group.\n\ | |
1168 | Takes an optional file parameter."), | |
af030b9a AC |
1169 | &maintenanceprintlist); |
1170 | ||
32178cab | 1171 | } |