Commit | Line | Data |
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32178cab | 1 | /* Cache and manage the values of registers for GDB, the GNU debugger. |
3fadccb3 | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001, |
4 | 2002, 2004, 2007 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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
32178cab MS |
22 | |
23 | #include "defs.h" | |
32178cab MS |
24 | #include "inferior.h" |
25 | #include "target.h" | |
26 | #include "gdbarch.h" | |
705152c5 | 27 | #include "gdbcmd.h" |
4e052eda | 28 | #include "regcache.h" |
b59ff9d5 | 29 | #include "reggroups.h" |
61a0eb5b | 30 | #include "gdb_assert.h" |
b66d6d2e | 31 | #include "gdb_string.h" |
af030b9a | 32 | #include "gdbcmd.h" /* For maintenanceprintlist. */ |
f4c5303c | 33 | #include "observer.h" |
32178cab MS |
34 | |
35 | /* | |
36 | * DATA STRUCTURE | |
37 | * | |
38 | * Here is the actual register cache. | |
39 | */ | |
40 | ||
3fadccb3 AC |
41 | /* Per-architecture object describing the layout of a register cache. |
42 | Computed once when the architecture is created */ | |
43 | ||
44 | struct gdbarch_data *regcache_descr_handle; | |
45 | ||
46 | struct regcache_descr | |
47 | { | |
48 | /* The architecture this descriptor belongs to. */ | |
49 | struct gdbarch *gdbarch; | |
50 | ||
bb1db049 AC |
51 | /* The raw register cache. Each raw (or hard) register is supplied |
52 | by the target interface. The raw cache should not contain | |
53 | redundant information - if the PC is constructed from two | |
d2f0b918 | 54 | registers then those registers and not the PC lives in the raw |
bb1db049 | 55 | cache. */ |
3fadccb3 AC |
56 | int nr_raw_registers; |
57 | long sizeof_raw_registers; | |
58 | long sizeof_raw_register_valid_p; | |
59 | ||
d138e37a AC |
60 | /* The cooked register space. Each cooked register in the range |
61 | [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw | |
62 | register. The remaining [NR_RAW_REGISTERS | |
02f60eae | 63 | .. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto |
d138e37a | 64 | both raw registers and memory by the architecture methods |
02f60eae | 65 | gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */ |
d138e37a | 66 | int nr_cooked_registers; |
067df2e5 AC |
67 | long sizeof_cooked_registers; |
68 | long sizeof_cooked_register_valid_p; | |
d138e37a AC |
69 | |
70 | /* Offset and size (in 8 bit bytes), of reach register in the | |
71 | register cache. All registers (including those in the range | |
72 | [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset. | |
73 | Assigning all registers an offset makes it possible to keep | |
74 | legacy code, such as that found in read_register_bytes() and | |
75 | write_register_bytes() working. */ | |
3fadccb3 | 76 | long *register_offset; |
3fadccb3 | 77 | long *sizeof_register; |
3fadccb3 | 78 | |
bb425013 AC |
79 | /* Cached table containing the type of each register. */ |
80 | struct type **register_type; | |
3fadccb3 AC |
81 | }; |
82 | ||
3fadccb3 AC |
83 | static void * |
84 | init_regcache_descr (struct gdbarch *gdbarch) | |
85 | { | |
86 | int i; | |
87 | struct regcache_descr *descr; | |
88 | gdb_assert (gdbarch != NULL); | |
89 | ||
bb425013 | 90 | /* Create an initial, zero filled, table. */ |
116f06ea | 91 | descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr); |
3fadccb3 | 92 | descr->gdbarch = gdbarch; |
3fadccb3 | 93 | |
d138e37a AC |
94 | /* Total size of the register space. The raw registers are mapped |
95 | directly onto the raw register cache while the pseudo's are | |
3fadccb3 | 96 | either mapped onto raw-registers or memory. */ |
d138e37a | 97 | descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS; |
067df2e5 | 98 | descr->sizeof_cooked_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS; |
3fadccb3 | 99 | |
bb425013 | 100 | /* Fill in a table of register types. */ |
116f06ea AC |
101 | descr->register_type |
102 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, struct type *); | |
bb425013 | 103 | for (i = 0; i < descr->nr_cooked_registers; i++) |
336a3131 | 104 | descr->register_type[i] = gdbarch_register_type (gdbarch, i); |
bb425013 | 105 | |
bb1db049 AC |
106 | /* Construct a strictly RAW register cache. Don't allow pseudo's |
107 | into the register cache. */ | |
108 | descr->nr_raw_registers = NUM_REGS; | |
109 | ||
110 | /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p | |
111 | array. This pretects GDB from erant code that accesses elements | |
112 | of the global register_valid_p[] array in the range [NUM_REGS | |
113 | .. NUM_REGS + NUM_PSEUDO_REGS). */ | |
114 | descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p; | |
115 | ||
067df2e5 | 116 | /* Lay out the register cache. |
3fadccb3 | 117 | |
bb425013 AC |
118 | NOTE: cagney/2002-05-22: Only register_type() is used when |
119 | constructing the register cache. It is assumed that the | |
120 | register's raw size, virtual size and type length are all the | |
121 | same. */ | |
3fadccb3 AC |
122 | |
123 | { | |
124 | long offset = 0; | |
116f06ea AC |
125 | descr->sizeof_register |
126 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
127 | descr->register_offset | |
128 | = GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long); | |
d138e37a | 129 | for (i = 0; i < descr->nr_cooked_registers; i++) |
3fadccb3 | 130 | { |
bb425013 | 131 | descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]); |
3fadccb3 AC |
132 | descr->register_offset[i] = offset; |
133 | offset += descr->sizeof_register[i]; | |
123a958e | 134 | gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]); |
3fadccb3 AC |
135 | } |
136 | /* Set the real size of the register cache buffer. */ | |
067df2e5 | 137 | descr->sizeof_cooked_registers = offset; |
3fadccb3 AC |
138 | } |
139 | ||
067df2e5 | 140 | /* FIXME: cagney/2002-05-22: Should only need to allocate space for |
ce2826aa | 141 | the raw registers. Unfortunately some code still accesses the |
067df2e5 AC |
142 | register array directly using the global registers[]. Until that |
143 | code has been purged, play safe and over allocating the register | |
144 | buffer. Ulgh! */ | |
145 | descr->sizeof_raw_registers = descr->sizeof_cooked_registers; | |
146 | ||
3fadccb3 AC |
147 | return descr; |
148 | } | |
149 | ||
150 | static struct regcache_descr * | |
151 | regcache_descr (struct gdbarch *gdbarch) | |
152 | { | |
153 | return gdbarch_data (gdbarch, regcache_descr_handle); | |
154 | } | |
155 | ||
bb425013 AC |
156 | /* Utility functions returning useful register attributes stored in |
157 | the regcache descr. */ | |
158 | ||
159 | struct type * | |
160 | register_type (struct gdbarch *gdbarch, int regnum) | |
161 | { | |
162 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
163 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
164 | return descr->register_type[regnum]; | |
165 | } | |
166 | ||
0ed04cce AC |
167 | /* Utility functions returning useful register attributes stored in |
168 | the regcache descr. */ | |
169 | ||
08a617da AC |
170 | int |
171 | register_size (struct gdbarch *gdbarch, int regnum) | |
172 | { | |
173 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
174 | int size; | |
175 | gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)); | |
176 | size = descr->sizeof_register[regnum]; | |
08a617da AC |
177 | return size; |
178 | } | |
179 | ||
3fadccb3 AC |
180 | /* The register cache for storing raw register values. */ |
181 | ||
182 | struct regcache | |
183 | { | |
184 | struct regcache_descr *descr; | |
51b1fe4e AC |
185 | /* The register buffers. A read-only register cache can hold the |
186 | full [0 .. NUM_REGS + NUM_PSEUDO_REGS) while a read/write | |
187 | register cache can only hold [0 .. NUM_REGS). */ | |
2d522557 | 188 | gdb_byte *registers; |
b05e64e5 FR |
189 | /* Register cache status: |
190 | register_valid_p[REG] == 0 if REG value is not in the cache | |
191 | > 0 if REG value is in the cache | |
192 | < 0 if REG value is permanently unavailable */ | |
193 | signed char *register_valid_p; | |
2d28509a AC |
194 | /* Is this a read-only cache? A read-only cache is used for saving |
195 | the target's register state (e.g, across an inferior function | |
196 | call or just before forcing a function return). A read-only | |
197 | cache can only be updated via the methods regcache_dup() and | |
198 | regcache_cpy(). The actual contents are determined by the | |
199 | reggroup_save and reggroup_restore methods. */ | |
200 | int readonly_p; | |
3fadccb3 AC |
201 | }; |
202 | ||
203 | struct regcache * | |
204 | regcache_xmalloc (struct gdbarch *gdbarch) | |
205 | { | |
206 | struct regcache_descr *descr; | |
207 | struct regcache *regcache; | |
208 | gdb_assert (gdbarch != NULL); | |
209 | descr = regcache_descr (gdbarch); | |
210 | regcache = XMALLOC (struct regcache); | |
211 | regcache->descr = descr; | |
51b1fe4e | 212 | regcache->registers |
2d522557 | 213 | = XCALLOC (descr->sizeof_raw_registers, gdb_byte); |
51b1fe4e | 214 | regcache->register_valid_p |
2d522557 | 215 | = XCALLOC (descr->sizeof_raw_register_valid_p, gdb_byte); |
2d28509a | 216 | regcache->readonly_p = 1; |
3fadccb3 AC |
217 | return regcache; |
218 | } | |
219 | ||
220 | void | |
221 | regcache_xfree (struct regcache *regcache) | |
222 | { | |
223 | if (regcache == NULL) | |
224 | return; | |
51b1fe4e AC |
225 | xfree (regcache->registers); |
226 | xfree (regcache->register_valid_p); | |
3fadccb3 AC |
227 | xfree (regcache); |
228 | } | |
229 | ||
b9362cc7 | 230 | static void |
36160dc4 AC |
231 | do_regcache_xfree (void *data) |
232 | { | |
233 | regcache_xfree (data); | |
234 | } | |
235 | ||
236 | struct cleanup * | |
237 | make_cleanup_regcache_xfree (struct regcache *regcache) | |
238 | { | |
239 | return make_cleanup (do_regcache_xfree, regcache); | |
240 | } | |
241 | ||
41d35cb0 MK |
242 | /* Return REGCACHE's architecture. */ |
243 | ||
244 | struct gdbarch * | |
245 | get_regcache_arch (const struct regcache *regcache) | |
246 | { | |
247 | return regcache->descr->gdbarch; | |
248 | } | |
249 | ||
51b1fe4e AC |
250 | /* Return a pointer to register REGNUM's buffer cache. */ |
251 | ||
2d522557 | 252 | static gdb_byte * |
9a661b68 | 253 | register_buffer (const struct regcache *regcache, int regnum) |
51b1fe4e AC |
254 | { |
255 | return regcache->registers + regcache->descr->register_offset[regnum]; | |
256 | } | |
257 | ||
2d28509a | 258 | void |
5602984a AC |
259 | regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read, |
260 | void *src) | |
2d28509a AC |
261 | { |
262 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
2d522557 | 263 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 264 | int regnum; |
2d28509a | 265 | /* The DST should be `read-only', if it wasn't then the save would |
5602984a | 266 | end up trying to write the register values back out to the |
2d28509a | 267 | target. */ |
2d28509a AC |
268 | gdb_assert (dst->readonly_p); |
269 | /* Clear the dest. */ | |
270 | memset (dst->registers, 0, dst->descr->sizeof_cooked_registers); | |
271 | memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p); | |
272 | /* Copy over any registers (identified by their membership in the | |
5602984a AC |
273 | save_reggroup) and mark them as valid. The full [0 .. NUM_REGS + |
274 | NUM_PSEUDO_REGS) range is checked since some architectures need | |
275 | to save/restore `cooked' registers that live in memory. */ | |
2d28509a AC |
276 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) |
277 | { | |
278 | if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup)) | |
279 | { | |
5602984a AC |
280 | int valid = cooked_read (src, regnum, buf); |
281 | if (valid) | |
282 | { | |
283 | memcpy (register_buffer (dst, regnum), buf, | |
284 | register_size (gdbarch, regnum)); | |
285 | dst->register_valid_p[regnum] = 1; | |
286 | } | |
2d28509a AC |
287 | } |
288 | } | |
289 | } | |
290 | ||
291 | void | |
5602984a AC |
292 | regcache_restore (struct regcache *dst, |
293 | regcache_cooked_read_ftype *cooked_read, | |
2d522557 | 294 | void *cooked_read_context) |
2d28509a AC |
295 | { |
296 | struct gdbarch *gdbarch = dst->descr->gdbarch; | |
2d522557 | 297 | gdb_byte buf[MAX_REGISTER_SIZE]; |
2d28509a | 298 | int regnum; |
5602984a AC |
299 | /* The dst had better not be read-only. If it is, the `restore' |
300 | doesn't make much sense. */ | |
2d28509a | 301 | gdb_assert (!dst->readonly_p); |
2d28509a | 302 | /* Copy over any registers, being careful to only restore those that |
5602984a AC |
303 | were both saved and need to be restored. The full [0 .. NUM_REGS |
304 | + NUM_PSEUDO_REGS) range is checked since some architectures need | |
305 | to save/restore `cooked' registers that live in memory. */ | |
306 | for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++) | |
2d28509a | 307 | { |
5602984a | 308 | if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) |
2d28509a | 309 | { |
2d522557 | 310 | int valid = cooked_read (cooked_read_context, regnum, buf); |
5602984a AC |
311 | if (valid) |
312 | regcache_cooked_write (dst, regnum, buf); | |
2d28509a AC |
313 | } |
314 | } | |
315 | } | |
316 | ||
5602984a | 317 | static int |
2d522557 | 318 | do_cooked_read (void *src, int regnum, gdb_byte *buf) |
5602984a AC |
319 | { |
320 | struct regcache *regcache = src; | |
6f4e5a41 | 321 | if (!regcache->register_valid_p[regnum] && regcache->readonly_p) |
5602984a AC |
322 | /* Don't even think about fetching a register from a read-only |
323 | cache when the register isn't yet valid. There isn't a target | |
324 | from which the register value can be fetched. */ | |
325 | return 0; | |
326 | regcache_cooked_read (regcache, regnum, buf); | |
327 | return 1; | |
328 | } | |
329 | ||
330 | ||
3fadccb3 AC |
331 | void |
332 | regcache_cpy (struct regcache *dst, struct regcache *src) | |
333 | { | |
334 | int i; | |
2d522557 | 335 | gdb_byte *buf; |
3fadccb3 AC |
336 | gdb_assert (src != NULL && dst != NULL); |
337 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
338 | gdb_assert (src != dst); | |
2d28509a AC |
339 | gdb_assert (src->readonly_p || dst->readonly_p); |
340 | if (!src->readonly_p) | |
5602984a | 341 | regcache_save (dst, do_cooked_read, src); |
2d28509a | 342 | else if (!dst->readonly_p) |
5602984a | 343 | regcache_restore (dst, do_cooked_read, src); |
2d28509a AC |
344 | else |
345 | regcache_cpy_no_passthrough (dst, src); | |
3fadccb3 AC |
346 | } |
347 | ||
348 | void | |
349 | regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src) | |
350 | { | |
351 | int i; | |
352 | gdb_assert (src != NULL && dst != NULL); | |
353 | gdb_assert (src->descr->gdbarch == dst->descr->gdbarch); | |
354 | /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough | |
355 | move of data into the current_regcache(). Doing this would be | |
9564ee9f | 356 | silly - it would mean that valid_p would be completely invalid. */ |
3fadccb3 | 357 | gdb_assert (dst != current_regcache); |
51b1fe4e AC |
358 | memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers); |
359 | memcpy (dst->register_valid_p, src->register_valid_p, | |
3fadccb3 AC |
360 | dst->descr->sizeof_raw_register_valid_p); |
361 | } | |
362 | ||
363 | struct regcache * | |
364 | regcache_dup (struct regcache *src) | |
365 | { | |
366 | struct regcache *newbuf; | |
367 | gdb_assert (current_regcache != NULL); | |
368 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
369 | regcache_cpy (newbuf, src); | |
370 | return newbuf; | |
371 | } | |
372 | ||
373 | struct regcache * | |
374 | regcache_dup_no_passthrough (struct regcache *src) | |
375 | { | |
376 | struct regcache *newbuf; | |
377 | gdb_assert (current_regcache != NULL); | |
378 | newbuf = regcache_xmalloc (src->descr->gdbarch); | |
379 | regcache_cpy_no_passthrough (newbuf, src); | |
380 | return newbuf; | |
381 | } | |
382 | ||
383 | int | |
6ed7ea50 | 384 | regcache_valid_p (const struct regcache *regcache, int regnum) |
3fadccb3 AC |
385 | { |
386 | gdb_assert (regcache != NULL); | |
6ed7ea50 UW |
387 | gdb_assert (regnum >= 0); |
388 | if (regcache->readonly_p) | |
389 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); | |
390 | else | |
391 | gdb_assert (regnum < regcache->descr->nr_raw_registers); | |
392 | ||
51b1fe4e | 393 | return regcache->register_valid_p[regnum]; |
3fadccb3 AC |
394 | } |
395 | ||
9c5ea4d9 UW |
396 | void |
397 | regcache_invalidate (struct regcache *regcache, int regnum) | |
398 | { | |
399 | gdb_assert (regcache != NULL); | |
400 | gdb_assert (regnum >= 0); | |
401 | gdb_assert (!regcache->readonly_p); | |
402 | gdb_assert (regnum < regcache->descr->nr_raw_registers); | |
403 | regcache->register_valid_p[regnum] = 0; | |
404 | } | |
405 | ||
406 | ||
3fadccb3 AC |
407 | /* Global structure containing the current regcache. */ |
408 | /* FIXME: cagney/2002-05-11: The two global arrays registers[] and | |
8262ee23 | 409 | deprecated_register_valid[] currently point into this structure. */ |
3fadccb3 AC |
410 | struct regcache *current_regcache; |
411 | ||
5ebd2499 | 412 | /* NOTE: this is a write-through cache. There is no "dirty" bit for |
32178cab MS |
413 | recording if the register values have been changed (eg. by the |
414 | user). Therefore all registers must be written back to the | |
415 | target when appropriate. */ | |
416 | ||
39f77062 | 417 | /* The thread/process associated with the current set of registers. */ |
32178cab | 418 | |
39f77062 | 419 | static ptid_t registers_ptid; |
32178cab | 420 | |
f4c5303c OF |
421 | /* Observer for the target_changed event. */ |
422 | ||
423 | void | |
424 | regcache_observer_target_changed (struct target_ops *target) | |
425 | { | |
426 | registers_changed (); | |
427 | } | |
428 | ||
32178cab MS |
429 | /* Low level examining and depositing of registers. |
430 | ||
431 | The caller is responsible for making sure that the inferior is | |
432 | stopped before calling the fetching routines, or it will get | |
433 | garbage. (a change from GDB version 3, in which the caller got the | |
434 | value from the last stop). */ | |
435 | ||
436 | /* REGISTERS_CHANGED () | |
437 | ||
438 | Indicate that registers may have changed, so invalidate the cache. */ | |
439 | ||
440 | void | |
441 | registers_changed (void) | |
442 | { | |
443 | int i; | |
32178cab | 444 | |
39f77062 | 445 | registers_ptid = pid_to_ptid (-1); |
32178cab MS |
446 | |
447 | /* Force cleanup of any alloca areas if using C alloca instead of | |
448 | a builtin alloca. This particular call is used to clean up | |
449 | areas allocated by low level target code which may build up | |
450 | during lengthy interactions between gdb and the target before | |
451 | gdb gives control to the user (ie watchpoints). */ | |
452 | alloca (0); | |
453 | ||
53826de9 | 454 | for (i = 0; i < current_regcache->descr->nr_raw_registers; i++) |
9c5ea4d9 | 455 | regcache_invalidate (current_regcache, i); |
32178cab MS |
456 | } |
457 | ||
32178cab | 458 | |
61a0eb5b | 459 | void |
2d522557 | 460 | regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
61a0eb5b | 461 | { |
3fadccb3 AC |
462 | gdb_assert (regcache != NULL && buf != NULL); |
463 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
3fadccb3 AC |
464 | /* Make certain that the register cache is up-to-date with respect |
465 | to the current thread. This switching shouldn't be necessary | |
466 | only there is still only one target side register cache. Sigh! | |
467 | On the bright side, at least there is a regcache object. */ | |
2d28509a | 468 | if (!regcache->readonly_p) |
3fadccb3 AC |
469 | { |
470 | gdb_assert (regcache == current_regcache); | |
471 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
472 | { | |
473 | registers_changed (); | |
474 | registers_ptid = inferior_ptid; | |
475 | } | |
56be3814 UW |
476 | if (!regcache_valid_p (regcache, regnum)) |
477 | target_fetch_registers (regcache, regnum); | |
0a8146bf AC |
478 | #if 0 |
479 | /* FIXME: cagney/2004-08-07: At present a number of targets | |
04c663e3 DA |
480 | forget (or didn't know that they needed) to set this leading to |
481 | panics. Also is the problem that targets need to indicate | |
0a8146bf AC |
482 | that a register is in one of the possible states: valid, |
483 | undefined, unknown. The last of which isn't yet | |
484 | possible. */ | |
9c5ea4d9 | 485 | gdb_assert (regcache_valid_p (regcache, regnum)); |
0a8146bf | 486 | #endif |
3fadccb3 AC |
487 | } |
488 | /* Copy the value directly into the register cache. */ | |
51b1fe4e | 489 | memcpy (buf, register_buffer (regcache, regnum), |
3fadccb3 | 490 | regcache->descr->sizeof_register[regnum]); |
61a0eb5b AC |
491 | } |
492 | ||
28fc6740 AC |
493 | void |
494 | regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val) | |
495 | { | |
2d522557 | 496 | gdb_byte *buf; |
28fc6740 AC |
497 | gdb_assert (regcache != NULL); |
498 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
499 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
500 | regcache_raw_read (regcache, regnum, buf); | |
501 | (*val) = extract_signed_integer (buf, | |
502 | regcache->descr->sizeof_register[regnum]); | |
503 | } | |
504 | ||
505 | void | |
506 | regcache_raw_read_unsigned (struct regcache *regcache, int regnum, | |
507 | ULONGEST *val) | |
508 | { | |
2d522557 | 509 | gdb_byte *buf; |
28fc6740 AC |
510 | gdb_assert (regcache != NULL); |
511 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
512 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
513 | regcache_raw_read (regcache, regnum, buf); | |
514 | (*val) = extract_unsigned_integer (buf, | |
515 | regcache->descr->sizeof_register[regnum]); | |
516 | } | |
517 | ||
c00dcbe9 MK |
518 | void |
519 | regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val) | |
520 | { | |
521 | void *buf; | |
522 | gdb_assert (regcache != NULL); | |
523 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers); | |
524 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
525 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
526 | regcache_raw_write (regcache, regnum, buf); | |
527 | } | |
528 | ||
529 | void | |
530 | regcache_raw_write_unsigned (struct regcache *regcache, int regnum, | |
531 | ULONGEST val) | |
532 | { | |
533 | void *buf; | |
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 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
538 | regcache_raw_write (regcache, regnum, buf); | |
539 | } | |
540 | ||
68365089 | 541 | void |
2d522557 | 542 | regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf) |
68365089 | 543 | { |
d138e37a | 544 | gdb_assert (regnum >= 0); |
68365089 AC |
545 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
546 | if (regnum < regcache->descr->nr_raw_registers) | |
547 | regcache_raw_read (regcache, regnum, buf); | |
2d28509a AC |
548 | else if (regcache->readonly_p |
549 | && regnum < regcache->descr->nr_cooked_registers | |
550 | && regcache->register_valid_p[regnum]) | |
b2fa5097 | 551 | /* Read-only register cache, perhaps the cooked value was cached? */ |
2d28509a AC |
552 | memcpy (buf, register_buffer (regcache, regnum), |
553 | regcache->descr->sizeof_register[regnum]); | |
d138e37a | 554 | else |
68365089 AC |
555 | gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache, |
556 | regnum, buf); | |
61a0eb5b AC |
557 | } |
558 | ||
a378f419 AC |
559 | void |
560 | regcache_cooked_read_signed (struct regcache *regcache, int regnum, | |
561 | LONGEST *val) | |
562 | { | |
2d522557 | 563 | gdb_byte *buf; |
a378f419 | 564 | gdb_assert (regcache != NULL); |
a66a9c23 | 565 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
566 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
567 | regcache_cooked_read (regcache, regnum, buf); | |
568 | (*val) = extract_signed_integer (buf, | |
569 | regcache->descr->sizeof_register[regnum]); | |
570 | } | |
571 | ||
572 | void | |
573 | regcache_cooked_read_unsigned (struct regcache *regcache, int regnum, | |
574 | ULONGEST *val) | |
575 | { | |
2d522557 | 576 | gdb_byte *buf; |
a378f419 | 577 | gdb_assert (regcache != NULL); |
a66a9c23 | 578 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers); |
a378f419 AC |
579 | buf = alloca (regcache->descr->sizeof_register[regnum]); |
580 | regcache_cooked_read (regcache, regnum, buf); | |
581 | (*val) = extract_unsigned_integer (buf, | |
582 | regcache->descr->sizeof_register[regnum]); | |
583 | } | |
584 | ||
a66a9c23 AC |
585 | void |
586 | regcache_cooked_write_signed (struct regcache *regcache, int regnum, | |
587 | LONGEST val) | |
588 | { | |
589 | void *buf; | |
590 | gdb_assert (regcache != NULL); | |
591 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
592 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
593 | store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
594 | regcache_cooked_write (regcache, regnum, buf); | |
595 | } | |
596 | ||
597 | void | |
598 | regcache_cooked_write_unsigned (struct regcache *regcache, int regnum, | |
599 | ULONGEST val) | |
600 | { | |
601 | void *buf; | |
602 | gdb_assert (regcache != NULL); | |
603 | gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers); | |
604 | buf = alloca (regcache->descr->sizeof_register[regnum]); | |
605 | store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val); | |
606 | regcache_cooked_write (regcache, regnum, buf); | |
607 | } | |
608 | ||
61a0eb5b | 609 | void |
2d522557 AC |
610 | regcache_raw_write (struct regcache *regcache, int regnum, |
611 | const gdb_byte *buf) | |
61a0eb5b | 612 | { |
3fadccb3 AC |
613 | gdb_assert (regcache != NULL && buf != NULL); |
614 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
2d28509a | 615 | gdb_assert (!regcache->readonly_p); |
3fadccb3 | 616 | |
3fadccb3 AC |
617 | /* On the sparc, writing %g0 is a no-op, so we don't even want to |
618 | change the registers array if something writes to this register. */ | |
619 | if (CANNOT_STORE_REGISTER (regnum)) | |
620 | return; | |
621 | ||
3fadccb3 AC |
622 | /* Make certain that the correct cache is selected. */ |
623 | gdb_assert (regcache == current_regcache); | |
624 | if (! ptid_equal (registers_ptid, inferior_ptid)) | |
625 | { | |
626 | registers_changed (); | |
627 | registers_ptid = inferior_ptid; | |
628 | } | |
629 | ||
630 | /* If we have a valid copy of the register, and new value == old | |
631 | value, then don't bother doing the actual store. */ | |
632 | if (regcache_valid_p (regcache, regnum) | |
633 | && (memcmp (register_buffer (regcache, regnum), buf, | |
634 | regcache->descr->sizeof_register[regnum]) == 0)) | |
635 | return; | |
636 | ||
316f2060 | 637 | target_prepare_to_store (regcache); |
3fadccb3 AC |
638 | memcpy (register_buffer (regcache, regnum), buf, |
639 | regcache->descr->sizeof_register[regnum]); | |
51b1fe4e | 640 | regcache->register_valid_p[regnum] = 1; |
56be3814 | 641 | target_store_registers (regcache, regnum); |
61a0eb5b AC |
642 | } |
643 | ||
68365089 | 644 | void |
2d522557 AC |
645 | regcache_cooked_write (struct regcache *regcache, int regnum, |
646 | const gdb_byte *buf) | |
68365089 | 647 | { |
d138e37a | 648 | gdb_assert (regnum >= 0); |
68365089 AC |
649 | gdb_assert (regnum < regcache->descr->nr_cooked_registers); |
650 | if (regnum < regcache->descr->nr_raw_registers) | |
651 | regcache_raw_write (regcache, regnum, buf); | |
d138e37a | 652 | else |
68365089 | 653 | gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache, |
d8124050 | 654 | regnum, buf); |
61a0eb5b AC |
655 | } |
656 | ||
06c0b04e AC |
657 | /* Perform a partial register transfer using a read, modify, write |
658 | operation. */ | |
659 | ||
660 | typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum, | |
661 | void *buf); | |
662 | typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum, | |
663 | const void *buf); | |
664 | ||
b9362cc7 | 665 | static void |
06c0b04e AC |
666 | regcache_xfer_part (struct regcache *regcache, int regnum, |
667 | int offset, int len, void *in, const void *out, | |
2d522557 AC |
668 | void (*read) (struct regcache *regcache, int regnum, |
669 | gdb_byte *buf), | |
670 | void (*write) (struct regcache *regcache, int regnum, | |
671 | const gdb_byte *buf)) | |
06c0b04e AC |
672 | { |
673 | struct regcache_descr *descr = regcache->descr; | |
fc1a4b47 | 674 | gdb_byte reg[MAX_REGISTER_SIZE]; |
06c0b04e AC |
675 | gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]); |
676 | gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]); | |
677 | /* Something to do? */ | |
678 | if (offset + len == 0) | |
679 | return; | |
680 | /* Read (when needed) ... */ | |
681 | if (in != NULL | |
682 | || offset > 0 | |
683 | || offset + len < descr->sizeof_register[regnum]) | |
684 | { | |
685 | gdb_assert (read != NULL); | |
686 | read (regcache, regnum, reg); | |
687 | } | |
688 | /* ... modify ... */ | |
689 | if (in != NULL) | |
690 | memcpy (in, reg + offset, len); | |
691 | if (out != NULL) | |
692 | memcpy (reg + offset, out, len); | |
693 | /* ... write (when needed). */ | |
694 | if (out != NULL) | |
695 | { | |
696 | gdb_assert (write != NULL); | |
697 | write (regcache, regnum, reg); | |
698 | } | |
699 | } | |
700 | ||
701 | void | |
702 | regcache_raw_read_part (struct regcache *regcache, int regnum, | |
2d522557 | 703 | int offset, int len, gdb_byte *buf) |
06c0b04e AC |
704 | { |
705 | struct regcache_descr *descr = regcache->descr; | |
706 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
707 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
708 | regcache_raw_read, regcache_raw_write); | |
709 | } | |
710 | ||
711 | void | |
712 | regcache_raw_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 713 | int offset, int len, const gdb_byte *buf) |
06c0b04e AC |
714 | { |
715 | struct regcache_descr *descr = regcache->descr; | |
716 | gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers); | |
717 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
718 | regcache_raw_read, regcache_raw_write); | |
719 | } | |
720 | ||
721 | void | |
722 | regcache_cooked_read_part (struct regcache *regcache, int regnum, | |
2d522557 | 723 | int offset, int len, gdb_byte *buf) |
06c0b04e AC |
724 | { |
725 | struct regcache_descr *descr = regcache->descr; | |
726 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
727 | regcache_xfer_part (regcache, regnum, offset, len, buf, NULL, | |
728 | regcache_cooked_read, regcache_cooked_write); | |
729 | } | |
730 | ||
731 | void | |
732 | regcache_cooked_write_part (struct regcache *regcache, int regnum, | |
2d522557 | 733 | int offset, int len, const gdb_byte *buf) |
06c0b04e AC |
734 | { |
735 | struct regcache_descr *descr = regcache->descr; | |
736 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
737 | regcache_xfer_part (regcache, regnum, offset, len, NULL, buf, | |
738 | regcache_cooked_read, regcache_cooked_write); | |
739 | } | |
32178cab | 740 | |
d3b22ed5 AC |
741 | /* Hack to keep code that view the register buffer as raw bytes |
742 | working. */ | |
743 | ||
744 | int | |
745 | register_offset_hack (struct gdbarch *gdbarch, int regnum) | |
746 | { | |
747 | struct regcache_descr *descr = regcache_descr (gdbarch); | |
748 | gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers); | |
749 | return descr->register_offset[regnum]; | |
750 | } | |
751 | ||
5ebd2499 | 752 | /* Return the contents of register REGNUM as an unsigned integer. */ |
32178cab | 753 | |
173155e8 | 754 | ULONGEST |
5ebd2499 | 755 | read_register (int regnum) |
32178cab | 756 | { |
2d522557 | 757 | gdb_byte *buf = alloca (register_size (current_gdbarch, regnum)); |
81c4a259 UW |
758 | gdb_assert (current_regcache != NULL); |
759 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
760 | regcache_cooked_read (current_regcache, regnum, buf); | |
3acba339 | 761 | return (extract_unsigned_integer (buf, register_size (current_gdbarch, regnum))); |
32178cab MS |
762 | } |
763 | ||
173155e8 | 764 | ULONGEST |
39f77062 | 765 | read_register_pid (int regnum, ptid_t ptid) |
32178cab | 766 | { |
39f77062 | 767 | ptid_t save_ptid; |
32178cab MS |
768 | int save_pid; |
769 | CORE_ADDR retval; | |
770 | ||
39f77062 | 771 | if (ptid_equal (ptid, inferior_ptid)) |
5ebd2499 | 772 | return read_register (regnum); |
32178cab | 773 | |
39f77062 | 774 | save_ptid = inferior_ptid; |
32178cab | 775 | |
39f77062 | 776 | inferior_ptid = ptid; |
32178cab | 777 | |
5ebd2499 | 778 | retval = read_register (regnum); |
32178cab | 779 | |
39f77062 | 780 | inferior_ptid = save_ptid; |
32178cab MS |
781 | |
782 | return retval; | |
783 | } | |
784 | ||
5ebd2499 | 785 | /* Store VALUE into the raw contents of register number REGNUM. */ |
32178cab MS |
786 | |
787 | void | |
5ebd2499 | 788 | write_register (int regnum, LONGEST val) |
32178cab | 789 | { |
61a0eb5b | 790 | void *buf; |
32178cab | 791 | int size; |
3acba339 | 792 | size = register_size (current_gdbarch, regnum); |
32178cab MS |
793 | buf = alloca (size); |
794 | store_signed_integer (buf, size, (LONGEST) val); | |
81c4a259 UW |
795 | gdb_assert (current_regcache != NULL); |
796 | gdb_assert (current_regcache->descr->gdbarch == current_gdbarch); | |
797 | regcache_cooked_write (current_regcache, regnum, buf); | |
32178cab MS |
798 | } |
799 | ||
800 | void | |
39f77062 | 801 | write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid) |
32178cab | 802 | { |
39f77062 | 803 | ptid_t save_ptid; |
32178cab | 804 | |
39f77062 | 805 | if (ptid_equal (ptid, inferior_ptid)) |
32178cab | 806 | { |
5ebd2499 | 807 | write_register (regnum, val); |
32178cab MS |
808 | return; |
809 | } | |
810 | ||
39f77062 | 811 | save_ptid = inferior_ptid; |
32178cab | 812 | |
39f77062 | 813 | inferior_ptid = ptid; |
32178cab | 814 | |
5ebd2499 | 815 | write_register (regnum, val); |
32178cab | 816 | |
39f77062 | 817 | inferior_ptid = save_ptid; |
32178cab MS |
818 | } |
819 | ||
a16d75cc | 820 | /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */ |
9a661b68 MK |
821 | |
822 | void | |
6618125d | 823 | regcache_raw_supply (struct regcache *regcache, int regnum, const void *buf) |
9a661b68 MK |
824 | { |
825 | void *regbuf; | |
826 | size_t size; | |
827 | ||
a16d75cc | 828 | gdb_assert (regcache != NULL); |
9a661b68 MK |
829 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); |
830 | gdb_assert (!regcache->readonly_p); | |
831 | ||
832 | /* FIXME: kettenis/20030828: It shouldn't be necessary to handle | |
833 | CURRENT_REGCACHE specially here. */ | |
834 | if (regcache == current_regcache | |
835 | && !ptid_equal (registers_ptid, inferior_ptid)) | |
836 | { | |
837 | registers_changed (); | |
838 | registers_ptid = inferior_ptid; | |
839 | } | |
840 | ||
841 | regbuf = register_buffer (regcache, regnum); | |
842 | size = regcache->descr->sizeof_register[regnum]; | |
843 | ||
844 | if (buf) | |
845 | memcpy (regbuf, buf, size); | |
846 | else | |
847 | memset (regbuf, 0, size); | |
848 | ||
849 | /* Mark the register as cached. */ | |
850 | regcache->register_valid_p[regnum] = 1; | |
851 | } | |
852 | ||
853 | /* Collect register REGNUM from REGCACHE and store its contents in BUF. */ | |
854 | ||
855 | void | |
6618125d | 856 | regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf) |
9a661b68 MK |
857 | { |
858 | const void *regbuf; | |
859 | size_t size; | |
860 | ||
861 | gdb_assert (regcache != NULL && buf != NULL); | |
862 | gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers); | |
863 | ||
864 | regbuf = register_buffer (regcache, regnum); | |
865 | size = regcache->descr->sizeof_register[regnum]; | |
866 | memcpy (buf, regbuf, size); | |
867 | } | |
868 | ||
193cb69f | 869 | |
fb4443d8 | 870 | /* read_pc, write_pc, etc. Special handling for register PC. */ |
32178cab | 871 | |
9c8dbfa9 AC |
872 | /* NOTE: cagney/2001-02-18: The functions read_pc_pid(), read_pc() and |
873 | read_sp(), will eventually be replaced by per-frame methods. | |
874 | Instead of relying on the global INFERIOR_PTID, they will use the | |
875 | contextual information provided by the FRAME. These functions do | |
876 | not belong in the register cache. */ | |
32178cab | 877 | |
cde9ea48 | 878 | /* NOTE: cagney/2003-06-07: The functions generic_target_write_pc(), |
9c8dbfa9 AC |
879 | write_pc_pid() and write_pc(), all need to be replaced by something |
880 | that does not rely on global state. But what? */ | |
32178cab MS |
881 | |
882 | CORE_ADDR | |
39f77062 | 883 | read_pc_pid (ptid_t ptid) |
32178cab | 884 | { |
39f77062 | 885 | ptid_t saved_inferior_ptid; |
32178cab MS |
886 | CORE_ADDR pc_val; |
887 | ||
39f77062 KB |
888 | /* In case ptid != inferior_ptid. */ |
889 | saved_inferior_ptid = inferior_ptid; | |
890 | inferior_ptid = ptid; | |
32178cab | 891 | |
cde9ea48 AC |
892 | if (TARGET_READ_PC_P ()) |
893 | pc_val = TARGET_READ_PC (ptid); | |
894 | /* Else use per-frame method on get_current_frame. */ | |
895 | else if (PC_REGNUM >= 0) | |
896 | { | |
897 | CORE_ADDR raw_val = read_register_pid (PC_REGNUM, ptid); | |
6ba34a8d | 898 | pc_val = ADDR_BITS_REMOVE (raw_val); |
cde9ea48 AC |
899 | } |
900 | else | |
e2e0b3e5 | 901 | internal_error (__FILE__, __LINE__, _("read_pc_pid: Unable to find PC")); |
32178cab | 902 | |
39f77062 | 903 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
904 | return pc_val; |
905 | } | |
906 | ||
907 | CORE_ADDR | |
908 | read_pc (void) | |
909 | { | |
39f77062 | 910 | return read_pc_pid (inferior_ptid); |
32178cab MS |
911 | } |
912 | ||
32178cab | 913 | void |
39f77062 | 914 | generic_target_write_pc (CORE_ADDR pc, ptid_t ptid) |
32178cab | 915 | { |
32178cab | 916 | if (PC_REGNUM >= 0) |
39f77062 | 917 | write_register_pid (PC_REGNUM, pc, ptid); |
afb18d0f AC |
918 | else |
919 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 920 | _("generic_target_write_pc")); |
32178cab MS |
921 | } |
922 | ||
923 | void | |
39f77062 | 924 | write_pc_pid (CORE_ADDR pc, ptid_t ptid) |
32178cab | 925 | { |
39f77062 | 926 | ptid_t saved_inferior_ptid; |
32178cab | 927 | |
39f77062 KB |
928 | /* In case ptid != inferior_ptid. */ |
929 | saved_inferior_ptid = inferior_ptid; | |
930 | inferior_ptid = ptid; | |
32178cab | 931 | |
39f77062 | 932 | TARGET_WRITE_PC (pc, ptid); |
32178cab | 933 | |
39f77062 | 934 | inferior_ptid = saved_inferior_ptid; |
32178cab MS |
935 | } |
936 | ||
937 | void | |
938 | write_pc (CORE_ADDR pc) | |
939 | { | |
39f77062 | 940 | write_pc_pid (pc, inferior_ptid); |
32178cab MS |
941 | } |
942 | ||
32178cab | 943 | |
705152c5 MS |
944 | static void |
945 | reg_flush_command (char *command, int from_tty) | |
946 | { | |
947 | /* Force-flush the register cache. */ | |
948 | registers_changed (); | |
949 | if (from_tty) | |
a3f17187 | 950 | printf_filtered (_("Register cache flushed.\n")); |
705152c5 MS |
951 | } |
952 | ||
32178cab MS |
953 | static void |
954 | build_regcache (void) | |
3fadccb3 AC |
955 | { |
956 | current_regcache = regcache_xmalloc (current_gdbarch); | |
2d28509a | 957 | current_regcache->readonly_p = 0; |
3fadccb3 AC |
958 | } |
959 | ||
af030b9a AC |
960 | static void |
961 | dump_endian_bytes (struct ui_file *file, enum bfd_endian endian, | |
962 | const unsigned char *buf, long len) | |
963 | { | |
964 | int i; | |
965 | switch (endian) | |
966 | { | |
967 | case BFD_ENDIAN_BIG: | |
968 | for (i = 0; i < len; i++) | |
969 | fprintf_unfiltered (file, "%02x", buf[i]); | |
970 | break; | |
971 | case BFD_ENDIAN_LITTLE: | |
972 | for (i = len - 1; i >= 0; i--) | |
973 | fprintf_unfiltered (file, "%02x", buf[i]); | |
974 | break; | |
975 | default: | |
e2e0b3e5 | 976 | internal_error (__FILE__, __LINE__, _("Bad switch")); |
af030b9a AC |
977 | } |
978 | } | |
979 | ||
980 | enum regcache_dump_what | |
981 | { | |
b59ff9d5 | 982 | regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups |
af030b9a AC |
983 | }; |
984 | ||
985 | static void | |
986 | regcache_dump (struct regcache *regcache, struct ui_file *file, | |
987 | enum regcache_dump_what what_to_dump) | |
988 | { | |
989 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
b59ff9d5 | 990 | struct gdbarch *gdbarch = regcache->descr->gdbarch; |
af030b9a AC |
991 | int regnum; |
992 | int footnote_nr = 0; | |
993 | int footnote_register_size = 0; | |
994 | int footnote_register_offset = 0; | |
995 | int footnote_register_type_name_null = 0; | |
996 | long register_offset = 0; | |
123a958e | 997 | unsigned char buf[MAX_REGISTER_SIZE]; |
af030b9a AC |
998 | |
999 | #if 0 | |
af030b9a AC |
1000 | fprintf_unfiltered (file, "nr_raw_registers %d\n", |
1001 | regcache->descr->nr_raw_registers); | |
1002 | fprintf_unfiltered (file, "nr_cooked_registers %d\n", | |
1003 | regcache->descr->nr_cooked_registers); | |
1004 | fprintf_unfiltered (file, "sizeof_raw_registers %ld\n", | |
1005 | regcache->descr->sizeof_raw_registers); | |
1006 | fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n", | |
1007 | regcache->descr->sizeof_raw_register_valid_p); | |
af030b9a AC |
1008 | fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS); |
1009 | fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS); | |
1010 | #endif | |
1011 | ||
1012 | gdb_assert (regcache->descr->nr_cooked_registers | |
1013 | == (NUM_REGS + NUM_PSEUDO_REGS)); | |
1014 | ||
1015 | for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++) | |
1016 | { | |
1017 | /* Name. */ | |
1018 | if (regnum < 0) | |
1019 | fprintf_unfiltered (file, " %-10s", "Name"); | |
1020 | else | |
1021 | { | |
1022 | const char *p = REGISTER_NAME (regnum); | |
1023 | if (p == NULL) | |
1024 | p = ""; | |
1025 | else if (p[0] == '\0') | |
1026 | p = "''"; | |
1027 | fprintf_unfiltered (file, " %-10s", p); | |
1028 | } | |
1029 | ||
1030 | /* Number. */ | |
1031 | if (regnum < 0) | |
1032 | fprintf_unfiltered (file, " %4s", "Nr"); | |
1033 | else | |
1034 | fprintf_unfiltered (file, " %4d", regnum); | |
1035 | ||
1036 | /* Relative number. */ | |
1037 | if (regnum < 0) | |
1038 | fprintf_unfiltered (file, " %4s", "Rel"); | |
1039 | else if (regnum < NUM_REGS) | |
1040 | fprintf_unfiltered (file, " %4d", regnum); | |
1041 | else | |
1042 | fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS)); | |
1043 | ||
1044 | /* Offset. */ | |
1045 | if (regnum < 0) | |
1046 | fprintf_unfiltered (file, " %6s ", "Offset"); | |
1047 | else | |
1048 | { | |
1049 | fprintf_unfiltered (file, " %6ld", | |
1050 | regcache->descr->register_offset[regnum]); | |
a7e3c2ad | 1051 | if (register_offset != regcache->descr->register_offset[regnum] |
d3b22ed5 AC |
1052 | || (regnum > 0 |
1053 | && (regcache->descr->register_offset[regnum] | |
1054 | != (regcache->descr->register_offset[regnum - 1] | |
1055 | + regcache->descr->sizeof_register[regnum - 1]))) | |
1056 | ) | |
af030b9a AC |
1057 | { |
1058 | if (!footnote_register_offset) | |
1059 | footnote_register_offset = ++footnote_nr; | |
1060 | fprintf_unfiltered (file, "*%d", footnote_register_offset); | |
1061 | } | |
1062 | else | |
1063 | fprintf_unfiltered (file, " "); | |
1064 | register_offset = (regcache->descr->register_offset[regnum] | |
1065 | + regcache->descr->sizeof_register[regnum]); | |
1066 | } | |
1067 | ||
1068 | /* Size. */ | |
1069 | if (regnum < 0) | |
1070 | fprintf_unfiltered (file, " %5s ", "Size"); | |
1071 | else | |
01e1877c AC |
1072 | fprintf_unfiltered (file, " %5ld", |
1073 | regcache->descr->sizeof_register[regnum]); | |
af030b9a AC |
1074 | |
1075 | /* Type. */ | |
b59ff9d5 AC |
1076 | { |
1077 | const char *t; | |
1078 | if (regnum < 0) | |
1079 | t = "Type"; | |
1080 | else | |
1081 | { | |
1082 | static const char blt[] = "builtin_type"; | |
1083 | t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum)); | |
1084 | if (t == NULL) | |
1085 | { | |
1086 | char *n; | |
1087 | if (!footnote_register_type_name_null) | |
1088 | footnote_register_type_name_null = ++footnote_nr; | |
b435e160 | 1089 | n = xstrprintf ("*%d", footnote_register_type_name_null); |
b59ff9d5 AC |
1090 | make_cleanup (xfree, n); |
1091 | t = n; | |
1092 | } | |
1093 | /* Chop a leading builtin_type. */ | |
1094 | if (strncmp (t, blt, strlen (blt)) == 0) | |
1095 | t += strlen (blt); | |
1096 | } | |
1097 | fprintf_unfiltered (file, " %-15s", t); | |
1098 | } | |
1099 | ||
1100 | /* Leading space always present. */ | |
1101 | fprintf_unfiltered (file, " "); | |
af030b9a AC |
1102 | |
1103 | /* Value, raw. */ | |
1104 | if (what_to_dump == regcache_dump_raw) | |
1105 | { | |
1106 | if (regnum < 0) | |
1107 | fprintf_unfiltered (file, "Raw value"); | |
1108 | else if (regnum >= regcache->descr->nr_raw_registers) | |
1109 | fprintf_unfiltered (file, "<cooked>"); | |
1110 | else if (!regcache_valid_p (regcache, regnum)) | |
1111 | fprintf_unfiltered (file, "<invalid>"); | |
1112 | else | |
1113 | { | |
1114 | regcache_raw_read (regcache, regnum, buf); | |
1115 | fprintf_unfiltered (file, "0x"); | |
0d20ae72 UW |
1116 | dump_endian_bytes (file, |
1117 | gdbarch_byte_order (current_gdbarch), buf, | |
01e1877c | 1118 | regcache->descr->sizeof_register[regnum]); |
af030b9a AC |
1119 | } |
1120 | } | |
1121 | ||
1122 | /* Value, cooked. */ | |
1123 | if (what_to_dump == regcache_dump_cooked) | |
1124 | { | |
1125 | if (regnum < 0) | |
1126 | fprintf_unfiltered (file, "Cooked value"); | |
1127 | else | |
1128 | { | |
1129 | regcache_cooked_read (regcache, regnum, buf); | |
1130 | fprintf_unfiltered (file, "0x"); | |
0d20ae72 UW |
1131 | dump_endian_bytes (file, |
1132 | gdbarch_byte_order (current_gdbarch), buf, | |
01e1877c | 1133 | regcache->descr->sizeof_register[regnum]); |
af030b9a AC |
1134 | } |
1135 | } | |
1136 | ||
b59ff9d5 AC |
1137 | /* Group members. */ |
1138 | if (what_to_dump == regcache_dump_groups) | |
1139 | { | |
1140 | if (regnum < 0) | |
1141 | fprintf_unfiltered (file, "Groups"); | |
1142 | else | |
1143 | { | |
b59ff9d5 | 1144 | const char *sep = ""; |
6c7d17ba AC |
1145 | struct reggroup *group; |
1146 | for (group = reggroup_next (gdbarch, NULL); | |
1147 | group != NULL; | |
1148 | group = reggroup_next (gdbarch, group)) | |
b59ff9d5 | 1149 | { |
6c7d17ba | 1150 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
b59ff9d5 | 1151 | { |
6c7d17ba | 1152 | fprintf_unfiltered (file, "%s%s", sep, reggroup_name (group)); |
b59ff9d5 AC |
1153 | sep = ","; |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | ||
af030b9a AC |
1159 | fprintf_unfiltered (file, "\n"); |
1160 | } | |
1161 | ||
1162 | if (footnote_register_size) | |
1163 | fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n", | |
1164 | footnote_register_size); | |
1165 | if (footnote_register_offset) | |
1166 | fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n", | |
1167 | footnote_register_offset); | |
1168 | if (footnote_register_type_name_null) | |
1169 | fprintf_unfiltered (file, | |
1170 | "*%d: Register type's name NULL.\n", | |
1171 | footnote_register_type_name_null); | |
1172 | do_cleanups (cleanups); | |
1173 | } | |
1174 | ||
1175 | static void | |
1176 | regcache_print (char *args, enum regcache_dump_what what_to_dump) | |
1177 | { | |
1178 | if (args == NULL) | |
1179 | regcache_dump (current_regcache, gdb_stdout, what_to_dump); | |
1180 | else | |
1181 | { | |
1182 | struct ui_file *file = gdb_fopen (args, "w"); | |
1183 | if (file == NULL) | |
e2e0b3e5 | 1184 | perror_with_name (_("maintenance print architecture")); |
af030b9a AC |
1185 | regcache_dump (current_regcache, file, what_to_dump); |
1186 | ui_file_delete (file); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | static void | |
1191 | maintenance_print_registers (char *args, int from_tty) | |
1192 | { | |
1193 | regcache_print (args, regcache_dump_none); | |
1194 | } | |
1195 | ||
1196 | static void | |
1197 | maintenance_print_raw_registers (char *args, int from_tty) | |
1198 | { | |
1199 | regcache_print (args, regcache_dump_raw); | |
1200 | } | |
1201 | ||
1202 | static void | |
1203 | maintenance_print_cooked_registers (char *args, int from_tty) | |
1204 | { | |
1205 | regcache_print (args, regcache_dump_cooked); | |
1206 | } | |
1207 | ||
b59ff9d5 AC |
1208 | static void |
1209 | maintenance_print_register_groups (char *args, int from_tty) | |
1210 | { | |
1211 | regcache_print (args, regcache_dump_groups); | |
1212 | } | |
1213 | ||
b9362cc7 AC |
1214 | extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */ |
1215 | ||
32178cab MS |
1216 | void |
1217 | _initialize_regcache (void) | |
1218 | { | |
030f20e1 | 1219 | regcache_descr_handle = gdbarch_data_register_post_init (init_regcache_descr); |
046a4708 | 1220 | DEPRECATED_REGISTER_GDBARCH_SWAP (current_regcache); |
046a4708 | 1221 | deprecated_register_gdbarch_swap (NULL, 0, build_regcache); |
705152c5 | 1222 | |
f4c5303c OF |
1223 | observer_attach_target_changed (regcache_observer_target_changed); |
1224 | ||
705152c5 | 1225 | add_com ("flushregs", class_maintenance, reg_flush_command, |
1bedd215 | 1226 | _("Force gdb to flush its register cache (maintainer command)")); |
39f77062 KB |
1227 | |
1228 | /* Initialize the thread/process associated with the current set of | |
1229 | registers. For now, -1 is special, and means `no current process'. */ | |
1230 | registers_ptid = pid_to_ptid (-1); | |
af030b9a | 1231 | |
1a966eab AC |
1232 | add_cmd ("registers", class_maintenance, maintenance_print_registers, _("\ |
1233 | Print the internal register configuration.\n\ | |
1234 | Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1235 | add_cmd ("raw-registers", class_maintenance, |
1a966eab AC |
1236 | maintenance_print_raw_registers, _("\ |
1237 | Print the internal register configuration including raw values.\n\ | |
1238 | Takes an optional file parameter."), &maintenanceprintlist); | |
af030b9a | 1239 | add_cmd ("cooked-registers", class_maintenance, |
1a966eab AC |
1240 | maintenance_print_cooked_registers, _("\ |
1241 | Print the internal register configuration including cooked values.\n\ | |
1242 | Takes an optional file parameter."), &maintenanceprintlist); | |
b59ff9d5 | 1243 | add_cmd ("register-groups", class_maintenance, |
1a966eab AC |
1244 | maintenance_print_register_groups, _("\ |
1245 | Print the internal register configuration including each register's group.\n\ | |
1246 | Takes an optional file parameter."), | |
af030b9a AC |
1247 | &maintenanceprintlist); |
1248 | ||
32178cab | 1249 | } |