1 /* Cache and manage the values of registers for GDB, the GNU debugger.
3 Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000,
4 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
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.
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.
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
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
29 #include "reggroups.h"
30 #include "gdb_assert.h"
31 #include "gdb_string.h"
32 #include "gdbcmd.h" /* For maintenanceprintlist. */
37 * Here is the actual register cache.
40 /* Per-architecture object describing the layout of a register cache.
41 Computed once when the architecture is created */
43 struct gdbarch_data *regcache_descr_handle;
47 /* The architecture this descriptor belongs to. */
48 struct gdbarch *gdbarch;
50 /* Is this a ``legacy'' register cache? Such caches reserve space
51 for raw and pseudo registers and allow access to both. */
54 /* The raw register cache. This should contain just [0
55 .. NUM_RAW_REGISTERS). However, for older targets, it contains
56 space for the full [0 .. NUM_RAW_REGISTERS +
57 NUM_PSEUDO_REGISTERS). */
59 long sizeof_raw_registers;
60 long sizeof_raw_register_valid_p;
62 /* The cooked register space. Each cooked register in the range
63 [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw
64 register. The remaining [NR_RAW_REGISTERS
65 .. NR_COOKED_REGISTERS) (a.k.a. pseudo regiters) are mapped onto
66 both raw registers and memory by the architecture methods
67 gdbarch_register_read and gdbarch_register_write. */
68 int nr_cooked_registers;
69 long sizeof_cooked_registers;
70 long sizeof_cooked_register_valid_p;
72 /* Offset and size (in 8 bit bytes), of reach register in the
73 register cache. All registers (including those in the range
74 [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset.
75 Assigning all registers an offset makes it possible to keep
76 legacy code, such as that found in read_register_bytes() and
77 write_register_bytes() working. */
78 long *register_offset;
79 long *sizeof_register;
81 /* Cached table containing the type of each register. */
82 struct type **register_type;
86 init_legacy_regcache_descr (struct gdbarch *gdbarch,
87 struct regcache_descr *descr)
90 /* FIXME: cagney/2002-05-11: gdbarch_data() should take that
91 ``gdbarch'' as a parameter. */
92 gdb_assert (gdbarch != NULL);
94 /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers
95 in the register cache. Unfortunatly some architectures still
96 rely on this and the pseudo_register_write() method. */
97 descr->nr_raw_registers = descr->nr_cooked_registers;
98 descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p;
100 /* Compute the offset of each register. Legacy architectures define
101 REGISTER_BYTE() so use that. */
102 /* FIXME: cagney/2002-11-07: Instead of using REGISTER_BYTE() this
103 code should, as is done in init_regcache_descr(), compute the
104 offets at runtime. This currently isn't possible as some ISAs
105 define overlapping register regions - see the mess in
106 read_register_bytes() and write_register_bytes() registers. */
107 descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long);
108 descr->register_offset = XCALLOC (descr->nr_cooked_registers, long);
109 for (i = 0; i < descr->nr_cooked_registers; i++)
111 /* FIXME: cagney/2001-12-04: This code shouldn't need to use
112 REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the
113 buffer out so that certain registers just happen to overlap.
114 Ulgh! New targets use gdbarch's register read/write and
115 entirely avoid this uglyness. */
116 descr->register_offset[i] = REGISTER_BYTE (i);
117 descr->sizeof_register[i] = REGISTER_RAW_SIZE (i);
118 gdb_assert (MAX_REGISTER_SIZE >= REGISTER_RAW_SIZE (i));
119 gdb_assert (MAX_REGISTER_SIZE >= REGISTER_VIRTUAL_SIZE (i));
122 /* Compute the real size of the register buffer. Start out by
123 trusting DEPRECATED_REGISTER_BYTES, but then adjust it upwards
124 should that be found to not be sufficient. */
125 /* FIXME: cagney/2002-11-05: Instead of using the macro
126 DEPRECATED_REGISTER_BYTES, this code should, as is done in
127 init_regcache_descr(), compute the total number of register bytes
128 using the accumulated offsets. */
129 descr->sizeof_cooked_registers = DEPRECATED_REGISTER_BYTES; /* OK */
130 for (i = 0; i < descr->nr_cooked_registers; i++)
133 /* Keep extending the buffer so that there is always enough
134 space for all registers. The comparison is necessary since
135 legacy code is free to put registers in random places in the
136 buffer separated by holes. Once REGISTER_BYTE() is killed
137 this can be greatly simplified. */
138 regend = descr->register_offset[i] + descr->sizeof_register[i];
139 if (descr->sizeof_cooked_registers < regend)
140 descr->sizeof_cooked_registers = regend;
142 /* FIXME: cagney/2002-05-11: Shouldn't be including pseudo-registers
143 in the register cache. Unfortunatly some architectures still
144 rely on this and the pseudo_register_write() method. */
145 descr->sizeof_raw_registers = descr->sizeof_cooked_registers;
149 init_regcache_descr (struct gdbarch *gdbarch)
152 struct regcache_descr *descr;
153 gdb_assert (gdbarch != NULL);
155 /* Create an initial, zero filled, table. */
156 descr = XCALLOC (1, struct regcache_descr);
157 descr->gdbarch = gdbarch;
159 /* Total size of the register space. The raw registers are mapped
160 directly onto the raw register cache while the pseudo's are
161 either mapped onto raw-registers or memory. */
162 descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS;
163 descr->sizeof_cooked_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS;
165 /* Fill in a table of register types. */
166 descr->register_type = XCALLOC (descr->nr_cooked_registers,
168 for (i = 0; i < descr->nr_cooked_registers; i++)
170 if (gdbarch_register_type_p (gdbarch))
172 gdb_assert (!REGISTER_VIRTUAL_TYPE_P ()); /* OK */
173 descr->register_type[i] = gdbarch_register_type (gdbarch, i);
176 descr->register_type[i] = REGISTER_VIRTUAL_TYPE (i); /* OK */
179 /* If an old style architecture, fill in the remainder of the
180 register cache descriptor using the register macros. */
181 /* NOTE: cagney/2003-06-29: If either of REGISTER_BYTE or
182 REGISTER_RAW_SIZE are still present, things are most likely
183 totally screwed. Ex: an architecture with raw register sizes
184 smaller than what REGISTER_BYTE indicates; non monotonic
185 REGISTER_BYTE values. For GDB 6 check for these nasty methods
186 and fall back to legacy code when present. Sigh! */
187 if ((!gdbarch_pseudo_register_read_p (gdbarch)
188 && !gdbarch_pseudo_register_write_p (gdbarch)
189 && !gdbarch_register_type_p (gdbarch))
190 || REGISTER_BYTE_P () || REGISTER_RAW_SIZE_P ())
193 init_legacy_regcache_descr (gdbarch, descr);
197 /* Construct a strictly RAW register cache. Don't allow pseudo's
198 into the register cache. */
199 descr->nr_raw_registers = NUM_REGS;
201 /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p
202 array. This pretects GDB from erant code that accesses elements
203 of the global register_valid_p[] array in the range [NUM_REGS
204 .. NUM_REGS + NUM_PSEUDO_REGS). */
205 descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p;
207 /* Lay out the register cache.
209 NOTE: cagney/2002-05-22: Only register_type() is used when
210 constructing the register cache. It is assumed that the
211 register's raw size, virtual size and type length are all the
216 descr->sizeof_register = XCALLOC (descr->nr_cooked_registers, long);
217 descr->register_offset = XCALLOC (descr->nr_cooked_registers, long);
218 for (i = 0; i < descr->nr_cooked_registers; i++)
220 descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]);
221 descr->register_offset[i] = offset;
222 offset += descr->sizeof_register[i];
223 gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]);
225 /* Set the real size of the register cache buffer. */
226 descr->sizeof_cooked_registers = offset;
229 /* FIXME: cagney/2002-05-22: Should only need to allocate space for
230 the raw registers. Unfortunatly some code still accesses the
231 register array directly using the global registers[]. Until that
232 code has been purged, play safe and over allocating the register
234 descr->sizeof_raw_registers = descr->sizeof_cooked_registers;
236 /* Sanity check. Confirm that there is agreement between the
237 regcache and the target's redundant REGISTER_BYTE (new targets
238 should not even be defining it). */
239 for (i = 0; i < descr->nr_cooked_registers; i++)
241 if (REGISTER_BYTE_P ())
242 gdb_assert (descr->register_offset[i] == REGISTER_BYTE (i));
244 gdb_assert (descr->sizeof_register[i] == REGISTER_RAW_SIZE (i));
245 gdb_assert (descr->sizeof_register[i] == REGISTER_VIRTUAL_SIZE (i));
248 /* gdb_assert (descr->sizeof_raw_registers == DEPRECATED_REGISTER_BYTES (i)); */
253 static struct regcache_descr *
254 regcache_descr (struct gdbarch *gdbarch)
256 return gdbarch_data (gdbarch, regcache_descr_handle);
260 xfree_regcache_descr (struct gdbarch *gdbarch, void *ptr)
262 struct regcache_descr *descr = ptr;
265 xfree (descr->register_offset);
266 xfree (descr->sizeof_register);
267 descr->register_offset = NULL;
268 descr->sizeof_register = NULL;
272 /* Utility functions returning useful register attributes stored in
273 the regcache descr. */
276 register_type (struct gdbarch *gdbarch, int regnum)
278 struct regcache_descr *descr = regcache_descr (gdbarch);
279 gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
280 return descr->register_type[regnum];
283 /* Utility functions returning useful register attributes stored in
284 the regcache descr. */
287 register_size (struct gdbarch *gdbarch, int regnum)
289 struct regcache_descr *descr = regcache_descr (gdbarch);
291 gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS));
292 size = descr->sizeof_register[regnum];
293 /* NB: The deprecated REGISTER_RAW_SIZE, if not provided, defaults
294 to the size of the register's type. */
295 gdb_assert (size == REGISTER_RAW_SIZE (regnum)); /* OK */
296 /* NB: Don't check the register's virtual size. It, in say the case
297 of the MIPS, may not match the raw size! */
301 /* The register cache for storing raw register values. */
305 struct regcache_descr *descr;
306 /* The register buffers. A read-only register cache can hold the
307 full [0 .. NUM_REGS + NUM_PSEUDO_REGS) while a read/write
308 register cache can only hold [0 .. NUM_REGS). */
310 char *register_valid_p;
311 /* Is this a read-only cache? A read-only cache is used for saving
312 the target's register state (e.g, across an inferior function
313 call or just before forcing a function return). A read-only
314 cache can only be updated via the methods regcache_dup() and
315 regcache_cpy(). The actual contents are determined by the
316 reggroup_save and reggroup_restore methods. */
321 regcache_xmalloc (struct gdbarch *gdbarch)
323 struct regcache_descr *descr;
324 struct regcache *regcache;
325 gdb_assert (gdbarch != NULL);
326 descr = regcache_descr (gdbarch);
327 regcache = XMALLOC (struct regcache);
328 regcache->descr = descr;
330 = XCALLOC (descr->sizeof_raw_registers, char);
331 regcache->register_valid_p
332 = XCALLOC (descr->sizeof_raw_register_valid_p, char);
333 regcache->readonly_p = 1;
338 regcache_xfree (struct regcache *regcache)
340 if (regcache == NULL)
342 xfree (regcache->registers);
343 xfree (regcache->register_valid_p);
348 do_regcache_xfree (void *data)
350 regcache_xfree (data);
354 make_cleanup_regcache_xfree (struct regcache *regcache)
356 return make_cleanup (do_regcache_xfree, regcache);
359 /* Return a pointer to register REGNUM's buffer cache. */
362 register_buffer (struct regcache *regcache, int regnum)
364 return regcache->registers + regcache->descr->register_offset[regnum];
368 regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read,
371 struct gdbarch *gdbarch = dst->descr->gdbarch;
372 char buf[MAX_REGISTER_SIZE];
374 /* The DST should be `read-only', if it wasn't then the save would
375 end up trying to write the register values back out to the
377 gdb_assert (dst->readonly_p);
378 /* Clear the dest. */
379 memset (dst->registers, 0, dst->descr->sizeof_cooked_registers);
380 memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p);
381 /* Copy over any registers (identified by their membership in the
382 save_reggroup) and mark them as valid. The full [0 .. NUM_REGS +
383 NUM_PSEUDO_REGS) range is checked since some architectures need
384 to save/restore `cooked' registers that live in memory. */
385 for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
387 if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup))
389 int valid = cooked_read (src, regnum, buf);
392 memcpy (register_buffer (dst, regnum), buf,
393 register_size (gdbarch, regnum));
394 dst->register_valid_p[regnum] = 1;
401 regcache_restore (struct regcache *dst,
402 regcache_cooked_read_ftype *cooked_read,
405 struct gdbarch *gdbarch = dst->descr->gdbarch;
406 char buf[MAX_REGISTER_SIZE];
408 /* The dst had better not be read-only. If it is, the `restore'
409 doesn't make much sense. */
410 gdb_assert (!dst->readonly_p);
411 /* Copy over any registers, being careful to only restore those that
412 were both saved and need to be restored. The full [0 .. NUM_REGS
413 + NUM_PSEUDO_REGS) range is checked since some architectures need
414 to save/restore `cooked' registers that live in memory. */
415 for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
417 if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup))
419 int valid = cooked_read (src, regnum, buf);
421 regcache_cooked_write (dst, regnum, buf);
427 do_cooked_read (void *src, int regnum, void *buf)
429 struct regcache *regcache = src;
430 if (!regcache->register_valid_p[regnum] && regcache->readonly_p)
431 /* Don't even think about fetching a register from a read-only
432 cache when the register isn't yet valid. There isn't a target
433 from which the register value can be fetched. */
435 regcache_cooked_read (regcache, regnum, buf);
441 regcache_cpy (struct regcache *dst, struct regcache *src)
445 gdb_assert (src != NULL && dst != NULL);
446 gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
447 gdb_assert (src != dst);
448 gdb_assert (src->readonly_p || dst->readonly_p);
449 if (!src->readonly_p)
450 regcache_save (dst, do_cooked_read, src);
451 else if (!dst->readonly_p)
452 regcache_restore (dst, do_cooked_read, src);
454 regcache_cpy_no_passthrough (dst, src);
458 regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src)
461 gdb_assert (src != NULL && dst != NULL);
462 gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
463 /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough
464 move of data into the current_regcache(). Doing this would be
465 silly - it would mean that valid_p would be completly invalid. */
466 gdb_assert (dst != current_regcache);
467 memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers);
468 memcpy (dst->register_valid_p, src->register_valid_p,
469 dst->descr->sizeof_raw_register_valid_p);
473 regcache_dup (struct regcache *src)
475 struct regcache *newbuf;
476 gdb_assert (current_regcache != NULL);
477 newbuf = regcache_xmalloc (src->descr->gdbarch);
478 regcache_cpy (newbuf, src);
483 regcache_dup_no_passthrough (struct regcache *src)
485 struct regcache *newbuf;
486 gdb_assert (current_regcache != NULL);
487 newbuf = regcache_xmalloc (src->descr->gdbarch);
488 regcache_cpy_no_passthrough (newbuf, src);
493 regcache_valid_p (struct regcache *regcache, int regnum)
495 gdb_assert (regcache != NULL);
496 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
497 return regcache->register_valid_p[regnum];
501 deprecated_grub_regcache_for_registers (struct regcache *regcache)
503 return regcache->registers;
506 /* Global structure containing the current regcache. */
507 /* FIXME: cagney/2002-05-11: The two global arrays registers[] and
508 deprecated_register_valid[] currently point into this structure. */
509 struct regcache *current_regcache;
511 /* NOTE: this is a write-through cache. There is no "dirty" bit for
512 recording if the register values have been changed (eg. by the
513 user). Therefore all registers must be written back to the
514 target when appropriate. */
516 /* REGISTERS contains the cached register values (in target byte order). */
518 char *deprecated_registers;
520 /* DEPRECATED_REGISTER_VALID is 0 if the register needs to be fetched,
521 1 if it has been fetched, and
522 -1 if the register value was not available.
524 "Not available" indicates that the target is not not able to supply
525 the register at this state. The register may become available at a
526 later time (after the next resume). This often occures when GDB is
527 manipulating a target that contains only a snapshot of the entire
528 system being debugged - some of the registers in such a system may
529 not have been saved. */
531 signed char *deprecated_register_valid;
533 /* The thread/process associated with the current set of registers. */
535 static ptid_t registers_ptid;
543 Returns 0 if the value is not in the cache (needs fetch).
544 >0 if the value is in the cache.
545 <0 if the value is permanently unavailable (don't ask again). */
548 register_cached (int regnum)
550 return deprecated_register_valid[regnum];
553 /* Record that REGNUM's value is cached if STATE is >0, uncached but
554 fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */
557 set_register_cached (int regnum, int state)
559 gdb_assert (regnum >= 0);
560 gdb_assert (regnum < current_regcache->descr->nr_raw_registers);
561 current_regcache->register_valid_p[regnum] = state;
564 /* Return whether register REGNUM is a real register. */
567 real_register (int regnum)
569 return regnum >= 0 && regnum < NUM_REGS;
572 /* Low level examining and depositing of registers.
574 The caller is responsible for making sure that the inferior is
575 stopped before calling the fetching routines, or it will get
576 garbage. (a change from GDB version 3, in which the caller got the
577 value from the last stop). */
579 /* REGISTERS_CHANGED ()
581 Indicate that registers may have changed, so invalidate the cache. */
584 registers_changed (void)
588 registers_ptid = pid_to_ptid (-1);
590 /* Force cleanup of any alloca areas if using C alloca instead of
591 a builtin alloca. This particular call is used to clean up
592 areas allocated by low level target code which may build up
593 during lengthy interactions between gdb and the target before
594 gdb gives control to the user (ie watchpoints). */
597 for (i = 0; i < current_regcache->descr->nr_raw_registers; i++)
598 set_register_cached (i, 0);
600 if (registers_changed_hook)
601 registers_changed_hook ();
604 /* DEPRECATED_REGISTERS_FETCHED ()
606 Indicate that all registers have been fetched, so mark them all valid. */
608 /* NOTE: cagney/2001-12-04: This function does not set valid on the
609 pseudo-register range since pseudo registers are always supplied
610 using supply_register(). */
611 /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target
612 code was blatting the registers[] array and then calling this.
613 Since targets should only be using supply_register() the need for
614 this function/hack is eliminated. */
617 deprecated_registers_fetched (void)
621 for (i = 0; i < NUM_REGS; i++)
622 set_register_cached (i, 1);
623 /* Do not assume that the pseudo-regs have also been fetched.
624 Fetching all real regs NEVER accounts for pseudo-regs. */
627 /* deprecated_read_register_bytes and deprecated_write_register_bytes
628 are generally a *BAD* idea. They are inefficient because they need
629 to check for partial updates, which can only be done by scanning
630 through all of the registers and seeing if the bytes that are being
631 read/written fall inside of an invalid register. [The main reason
632 this is necessary is that register sizes can vary, so a simple
633 index won't suffice.] It is far better to call read_register_gen
634 and write_register_gen if you want to get at the raw register
635 contents, as it only takes a regnum as an argument, and therefore
636 can't do a partial register update.
638 Prior to the recent fixes to check for partial updates, both read
639 and deprecated_write_register_bytes always checked to see if any
640 registers were stale, and then called target_fetch_registers (-1)
641 to update the whole set. This caused really slowed things down for
644 /* Copy INLEN bytes of consecutive data from registers
645 starting with the INREGBYTE'th byte of register data
646 into memory at MYADDR. */
649 deprecated_read_register_bytes (int in_start, char *in_buf, int in_len)
651 int in_end = in_start + in_len;
653 char reg_buf[MAX_REGISTER_SIZE];
655 /* See if we are trying to read bytes from out-of-date registers. If so,
656 update just those registers. */
658 for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
667 reg_start = REGISTER_BYTE (regnum);
668 reg_len = REGISTER_RAW_SIZE (regnum);
669 reg_end = reg_start + reg_len;
671 if (reg_end <= in_start || in_end <= reg_start)
672 /* The range the user wants to read doesn't overlap with regnum. */
675 if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0')
676 /* Force the cache to fetch the entire register. */
677 deprecated_read_register_gen (regnum, reg_buf);
679 /* Legacy note: even though this register is ``invalid'' we
680 still need to return something. It would appear that some
681 code relies on apparent gaps in the register array also
683 /* FIXME: cagney/2001-08-18: This is just silly. It defeats
684 the entire register read/write flow of control. Must
685 resist temptation to return 0xdeadbeef. */
686 memcpy (reg_buf, &deprecated_registers[reg_start], reg_len);
688 /* Legacy note: This function, for some reason, allows a NULL
689 input buffer. If the buffer is NULL, the registers are still
690 fetched, just the final transfer is skipped. */
694 /* start = max (reg_start, in_start) */
695 if (reg_start > in_start)
700 /* end = min (reg_end, in_end) */
701 if (reg_end < in_end)
706 /* Transfer just the bytes common to both IN_BUF and REG_BUF */
707 for (byte = start; byte < end; byte++)
709 in_buf[byte - in_start] = reg_buf[byte - reg_start];
714 /* Read register REGNUM into memory at MYADDR, which must be large
715 enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the
716 register is known to be the size of a CORE_ADDR or smaller,
717 read_register can be used instead. */
720 legacy_read_register_gen (int regnum, char *myaddr)
722 gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS));
723 if (! ptid_equal (registers_ptid, inferior_ptid))
725 registers_changed ();
726 registers_ptid = inferior_ptid;
729 if (!register_cached (regnum))
730 target_fetch_registers (regnum);
732 memcpy (myaddr, register_buffer (current_regcache, regnum),
733 REGISTER_RAW_SIZE (regnum));
737 regcache_raw_read (struct regcache *regcache, int regnum, void *buf)
739 gdb_assert (regcache != NULL && buf != NULL);
740 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
741 if (regcache->descr->legacy_p
742 && !regcache->readonly_p)
744 gdb_assert (regcache == current_regcache);
745 /* For moment, just use underlying legacy code. Ulgh!!! This
746 silently and very indirectly updates the regcache's regcache
747 via the global deprecated_register_valid[]. */
748 legacy_read_register_gen (regnum, buf);
751 /* Make certain that the register cache is up-to-date with respect
752 to the current thread. This switching shouldn't be necessary
753 only there is still only one target side register cache. Sigh!
754 On the bright side, at least there is a regcache object. */
755 if (!regcache->readonly_p)
757 gdb_assert (regcache == current_regcache);
758 if (! ptid_equal (registers_ptid, inferior_ptid))
760 registers_changed ();
761 registers_ptid = inferior_ptid;
763 if (!register_cached (regnum))
764 target_fetch_registers (regnum);
766 /* Copy the value directly into the register cache. */
767 memcpy (buf, register_buffer (regcache, regnum),
768 regcache->descr->sizeof_register[regnum]);
772 regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val)
775 gdb_assert (regcache != NULL);
776 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
777 buf = alloca (regcache->descr->sizeof_register[regnum]);
778 regcache_raw_read (regcache, regnum, buf);
779 (*val) = extract_signed_integer (buf,
780 regcache->descr->sizeof_register[regnum]);
784 regcache_raw_read_unsigned (struct regcache *regcache, int regnum,
788 gdb_assert (regcache != NULL);
789 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
790 buf = alloca (regcache->descr->sizeof_register[regnum]);
791 regcache_raw_read (regcache, regnum, buf);
792 (*val) = extract_unsigned_integer (buf,
793 regcache->descr->sizeof_register[regnum]);
797 regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val)
800 gdb_assert (regcache != NULL);
801 gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
802 buf = alloca (regcache->descr->sizeof_register[regnum]);
803 store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val);
804 regcache_raw_write (regcache, regnum, buf);
808 regcache_raw_write_unsigned (struct regcache *regcache, int regnum,
812 gdb_assert (regcache != NULL);
813 gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
814 buf = alloca (regcache->descr->sizeof_register[regnum]);
815 store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val);
816 regcache_raw_write (regcache, regnum, buf);
820 deprecated_read_register_gen (int regnum, char *buf)
822 gdb_assert (current_regcache != NULL);
823 gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
824 if (current_regcache->descr->legacy_p)
826 legacy_read_register_gen (regnum, buf);
829 regcache_cooked_read (current_regcache, regnum, buf);
833 regcache_cooked_read (struct regcache *regcache, int regnum, void *buf)
835 gdb_assert (regnum >= 0);
836 gdb_assert (regnum < regcache->descr->nr_cooked_registers);
837 if (regnum < regcache->descr->nr_raw_registers)
838 regcache_raw_read (regcache, regnum, buf);
839 else if (regcache->readonly_p
840 && regnum < regcache->descr->nr_cooked_registers
841 && regcache->register_valid_p[regnum])
842 /* Read-only register cache, perhaphs the cooked value was cached? */
843 memcpy (buf, register_buffer (regcache, regnum),
844 regcache->descr->sizeof_register[regnum]);
846 gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache,
851 regcache_cooked_read_signed (struct regcache *regcache, int regnum,
855 gdb_assert (regcache != NULL);
856 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
857 buf = alloca (regcache->descr->sizeof_register[regnum]);
858 regcache_cooked_read (regcache, regnum, buf);
859 (*val) = extract_signed_integer (buf,
860 regcache->descr->sizeof_register[regnum]);
864 regcache_cooked_read_unsigned (struct regcache *regcache, int regnum,
868 gdb_assert (regcache != NULL);
869 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
870 buf = alloca (regcache->descr->sizeof_register[regnum]);
871 regcache_cooked_read (regcache, regnum, buf);
872 (*val) = extract_unsigned_integer (buf,
873 regcache->descr->sizeof_register[regnum]);
877 regcache_cooked_write_signed (struct regcache *regcache, int regnum,
881 gdb_assert (regcache != NULL);
882 gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
883 buf = alloca (regcache->descr->sizeof_register[regnum]);
884 store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val);
885 regcache_cooked_write (regcache, regnum, buf);
889 regcache_cooked_write_unsigned (struct regcache *regcache, int regnum,
893 gdb_assert (regcache != NULL);
894 gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
895 buf = alloca (regcache->descr->sizeof_register[regnum]);
896 store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val);
897 regcache_cooked_write (regcache, regnum, buf);
900 /* Write register REGNUM at MYADDR to the target. MYADDR points at
901 REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */
904 legacy_write_register_gen (int regnum, const void *myaddr)
907 gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS));
909 /* On the sparc, writing %g0 is a no-op, so we don't even want to
910 change the registers array if something writes to this register. */
911 if (CANNOT_STORE_REGISTER (regnum))
914 if (! ptid_equal (registers_ptid, inferior_ptid))
916 registers_changed ();
917 registers_ptid = inferior_ptid;
920 size = REGISTER_RAW_SIZE (regnum);
922 if (real_register (regnum))
924 /* If we have a valid copy of the register, and new value == old
925 value, then don't bother doing the actual store. */
926 if (register_cached (regnum)
927 && (memcmp (register_buffer (current_regcache, regnum), myaddr, size)
931 target_prepare_to_store ();
934 memcpy (register_buffer (current_regcache, regnum), myaddr, size);
936 set_register_cached (regnum, 1);
937 target_store_registers (regnum);
941 regcache_raw_write (struct regcache *regcache, int regnum, const void *buf)
943 gdb_assert (regcache != NULL && buf != NULL);
944 gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
945 gdb_assert (!regcache->readonly_p);
947 if (regcache->descr->legacy_p)
949 /* For moment, just use underlying legacy code. Ulgh!!! This
950 silently and very indirectly updates the regcache's buffers
951 via the globals deprecated_register_valid[] and registers[]. */
952 gdb_assert (regcache == current_regcache);
953 legacy_write_register_gen (regnum, buf);
957 /* On the sparc, writing %g0 is a no-op, so we don't even want to
958 change the registers array if something writes to this register. */
959 if (CANNOT_STORE_REGISTER (regnum))
962 /* Make certain that the correct cache is selected. */
963 gdb_assert (regcache == current_regcache);
964 if (! ptid_equal (registers_ptid, inferior_ptid))
966 registers_changed ();
967 registers_ptid = inferior_ptid;
970 /* If we have a valid copy of the register, and new value == old
971 value, then don't bother doing the actual store. */
972 if (regcache_valid_p (regcache, regnum)
973 && (memcmp (register_buffer (regcache, regnum), buf,
974 regcache->descr->sizeof_register[regnum]) == 0))
977 target_prepare_to_store ();
978 memcpy (register_buffer (regcache, regnum), buf,
979 regcache->descr->sizeof_register[regnum]);
980 regcache->register_valid_p[regnum] = 1;
981 target_store_registers (regnum);
985 deprecated_write_register_gen (int regnum, char *buf)
987 gdb_assert (current_regcache != NULL);
988 gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
989 if (current_regcache->descr->legacy_p)
991 legacy_write_register_gen (regnum, buf);
994 regcache_cooked_write (current_regcache, regnum, buf);
998 regcache_cooked_write (struct regcache *regcache, int regnum, const void *buf)
1000 gdb_assert (regnum >= 0);
1001 gdb_assert (regnum < regcache->descr->nr_cooked_registers);
1002 if (regnum < regcache->descr->nr_raw_registers)
1003 regcache_raw_write (regcache, regnum, buf);
1005 gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache,
1009 /* Copy INLEN bytes of consecutive data from memory at MYADDR
1010 into registers starting with the MYREGSTART'th byte of register data. */
1013 deprecated_write_register_bytes (int myregstart, char *myaddr, int inlen)
1015 int myregend = myregstart + inlen;
1018 target_prepare_to_store ();
1020 /* Scan through the registers updating any that are covered by the
1021 range myregstart<=>myregend using write_register_gen, which does
1022 nice things like handling threads, and avoiding updates when the
1023 new and old contents are the same. */
1025 for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
1027 int regstart, regend;
1029 regstart = REGISTER_BYTE (regnum);
1030 regend = regstart + REGISTER_RAW_SIZE (regnum);
1032 /* Is this register completely outside the range the user is writing? */
1033 if (myregend <= regstart || regend <= myregstart)
1036 /* Is this register completely within the range the user is writing? */
1037 else if (myregstart <= regstart && regend <= myregend)
1038 deprecated_write_register_gen (regnum, myaddr + (regstart - myregstart));
1040 /* The register partially overlaps the range being written. */
1043 char regbuf[MAX_REGISTER_SIZE];
1044 /* What's the overlap between this register's bytes and
1045 those the caller wants to write? */
1046 int overlapstart = max (regstart, myregstart);
1047 int overlapend = min (regend, myregend);
1049 /* We may be doing a partial update of an invalid register.
1050 Update it from the target before scribbling on it. */
1051 deprecated_read_register_gen (regnum, regbuf);
1053 memcpy (&deprecated_registers[overlapstart],
1054 myaddr + (overlapstart - myregstart),
1055 overlapend - overlapstart);
1057 target_store_registers (regnum);
1062 /* Perform a partial register transfer using a read, modify, write
1065 typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum,
1067 typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum,
1071 regcache_xfer_part (struct regcache *regcache, int regnum,
1072 int offset, int len, void *in, const void *out,
1073 regcache_read_ftype *read, regcache_write_ftype *write)
1075 struct regcache_descr *descr = regcache->descr;
1076 bfd_byte reg[MAX_REGISTER_SIZE];
1077 gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]);
1078 gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]);
1079 /* Something to do? */
1080 if (offset + len == 0)
1082 /* Read (when needed) ... */
1085 || offset + len < descr->sizeof_register[regnum])
1087 gdb_assert (read != NULL);
1088 read (regcache, regnum, reg);
1090 /* ... modify ... */
1092 memcpy (in, reg + offset, len);
1094 memcpy (reg + offset, out, len);
1095 /* ... write (when needed). */
1098 gdb_assert (write != NULL);
1099 write (regcache, regnum, reg);
1104 regcache_raw_read_part (struct regcache *regcache, int regnum,
1105 int offset, int len, void *buf)
1107 struct regcache_descr *descr = regcache->descr;
1108 gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
1109 regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
1110 regcache_raw_read, regcache_raw_write);
1114 regcache_raw_write_part (struct regcache *regcache, int regnum,
1115 int offset, int len, const void *buf)
1117 struct regcache_descr *descr = regcache->descr;
1118 gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
1119 regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
1120 regcache_raw_read, regcache_raw_write);
1124 regcache_cooked_read_part (struct regcache *regcache, int regnum,
1125 int offset, int len, void *buf)
1127 struct regcache_descr *descr = regcache->descr;
1128 gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
1129 regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
1130 regcache_cooked_read, regcache_cooked_write);
1134 regcache_cooked_write_part (struct regcache *regcache, int regnum,
1135 int offset, int len, const void *buf)
1137 struct regcache_descr *descr = regcache->descr;
1138 gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
1139 regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
1140 regcache_cooked_read, regcache_cooked_write);
1143 /* Hack to keep code that view the register buffer as raw bytes
1147 register_offset_hack (struct gdbarch *gdbarch, int regnum)
1149 struct regcache_descr *descr = regcache_descr (gdbarch);
1150 gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
1151 return descr->register_offset[regnum];
1154 /* Return the contents of register REGNUM as an unsigned integer. */
1157 read_register (int regnum)
1159 char *buf = alloca (REGISTER_RAW_SIZE (regnum));
1160 deprecated_read_register_gen (regnum, buf);
1161 return (extract_unsigned_integer (buf, REGISTER_RAW_SIZE (regnum)));
1165 read_register_pid (int regnum, ptid_t ptid)
1171 if (ptid_equal (ptid, inferior_ptid))
1172 return read_register (regnum);
1174 save_ptid = inferior_ptid;
1176 inferior_ptid = ptid;
1178 retval = read_register (regnum);
1180 inferior_ptid = save_ptid;
1185 /* Store VALUE into the raw contents of register number REGNUM. */
1188 write_register (int regnum, LONGEST val)
1192 size = REGISTER_RAW_SIZE (regnum);
1193 buf = alloca (size);
1194 store_signed_integer (buf, size, (LONGEST) val);
1195 deprecated_write_register_gen (regnum, buf);
1199 write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid)
1203 if (ptid_equal (ptid, inferior_ptid))
1205 write_register (regnum, val);
1209 save_ptid = inferior_ptid;
1211 inferior_ptid = ptid;
1213 write_register (regnum, val);
1215 inferior_ptid = save_ptid;
1218 /* SUPPLY_REGISTER()
1220 Record that register REGNUM contains VAL. This is used when the
1221 value is obtained from the inferior or core dump, so there is no
1222 need to store the value there.
1224 If VAL is a NULL pointer, then it's probably an unsupported register.
1225 We just set its value to all zeros. We might want to record this
1226 fact, and report it to the users of read_register and friends. */
1229 supply_register (int regnum, const void *val)
1232 if (! ptid_equal (registers_ptid, inferior_ptid))
1234 registers_changed ();
1235 registers_ptid = inferior_ptid;
1239 set_register_cached (regnum, 1);
1241 memcpy (register_buffer (current_regcache, regnum), val,
1242 REGISTER_RAW_SIZE (regnum));
1244 memset (register_buffer (current_regcache, regnum), '\000',
1245 REGISTER_RAW_SIZE (regnum));
1247 /* On some architectures, e.g. HPPA, there are a few stray bits in
1248 some registers, that the rest of the code would like to ignore. */
1250 /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is
1251 going to be deprecated. Instead architectures will leave the raw
1252 register value as is and instead clean things up as they pass
1253 through the method gdbarch_pseudo_register_read() clean up the
1256 #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE
1257 DEPRECATED_CLEAN_UP_REGISTER_VALUE \
1258 (regnum, register_buffer (current_regcache, regnum));
1263 regcache_collect (int regnum, void *buf)
1265 memcpy (buf, register_buffer (current_regcache, regnum),
1266 REGISTER_RAW_SIZE (regnum));
1270 /* read_pc, write_pc, read_sp, deprecated_read_fp, etc. Special
1271 handling for registers PC, SP, and FP. */
1273 /* NOTE: cagney/2001-02-18: The functions read_pc_pid(), read_pc(),
1274 read_sp(), and deprecated_read_fp(), will eventually be replaced by
1275 per-frame methods. Instead of relying on the global INFERIOR_PTID,
1276 they will use the contextual information provided by the FRAME.
1277 These functions do not belong in the register cache. */
1279 /* NOTE: cagney/2003-06-07: The functions generic_target_write_pc(),
1280 write_pc_pid(), write_pc(), and deprecated_read_fp(), all need to
1281 be replaced by something that does not rely on global state. But
1285 read_pc_pid (ptid_t ptid)
1287 ptid_t saved_inferior_ptid;
1290 /* In case ptid != inferior_ptid. */
1291 saved_inferior_ptid = inferior_ptid;
1292 inferior_ptid = ptid;
1294 if (TARGET_READ_PC_P ())
1295 pc_val = TARGET_READ_PC (ptid);
1296 /* Else use per-frame method on get_current_frame. */
1297 else if (PC_REGNUM >= 0)
1299 CORE_ADDR raw_val = read_register_pid (PC_REGNUM, ptid);
1300 CORE_ADDR pc_val = ADDR_BITS_REMOVE (raw_val);
1304 internal_error (__FILE__, __LINE__, "read_pc_pid: Unable to find PC");
1306 inferior_ptid = saved_inferior_ptid;
1313 return read_pc_pid (inferior_ptid);
1317 generic_target_write_pc (CORE_ADDR pc, ptid_t ptid)
1321 write_register_pid (PC_REGNUM, pc, ptid);
1322 if (NPC_REGNUM >= 0)
1323 write_register_pid (NPC_REGNUM, pc + 4, ptid);
1325 internal_error (__FILE__, __LINE__,
1326 "generic_target_write_pc");
1331 write_pc_pid (CORE_ADDR pc, ptid_t ptid)
1333 ptid_t saved_inferior_ptid;
1335 /* In case ptid != inferior_ptid. */
1336 saved_inferior_ptid = inferior_ptid;
1337 inferior_ptid = ptid;
1339 TARGET_WRITE_PC (pc, ptid);
1341 inferior_ptid = saved_inferior_ptid;
1345 write_pc (CORE_ADDR pc)
1347 write_pc_pid (pc, inferior_ptid);
1350 /* Cope with strage ways of getting to the stack and frame pointers */
1355 if (TARGET_READ_SP_P ())
1356 return TARGET_READ_SP ();
1357 else if (gdbarch_unwind_sp_p (current_gdbarch))
1358 return get_frame_sp (get_current_frame ());
1359 else if (SP_REGNUM >= 0)
1360 /* Try SP_REGNUM last: this makes all sorts of [wrong] assumptions
1361 about the architecture so put it at the end. */
1362 return read_register (SP_REGNUM);
1363 internal_error (__FILE__, __LINE__, "read_sp: Unable to find SP");
1367 deprecated_write_sp (CORE_ADDR val)
1369 gdb_assert (SP_REGNUM >= 0);
1370 write_register (SP_REGNUM, val);
1374 deprecated_read_fp (void)
1376 if (DEPRECATED_TARGET_READ_FP_P ())
1377 return DEPRECATED_TARGET_READ_FP ();
1378 else if (DEPRECATED_FP_REGNUM >= 0)
1379 return read_register (DEPRECATED_FP_REGNUM);
1381 internal_error (__FILE__, __LINE__, "deprecated_read_fp");
1386 reg_flush_command (char *command, int from_tty)
1388 /* Force-flush the register cache. */
1389 registers_changed ();
1391 printf_filtered ("Register cache flushed.\n");
1395 build_regcache (void)
1397 current_regcache = regcache_xmalloc (current_gdbarch);
1398 current_regcache->readonly_p = 0;
1399 deprecated_registers = deprecated_grub_regcache_for_registers (current_regcache);
1400 deprecated_register_valid = current_regcache->register_valid_p;
1404 dump_endian_bytes (struct ui_file *file, enum bfd_endian endian,
1405 const unsigned char *buf, long len)
1410 case BFD_ENDIAN_BIG:
1411 for (i = 0; i < len; i++)
1412 fprintf_unfiltered (file, "%02x", buf[i]);
1414 case BFD_ENDIAN_LITTLE:
1415 for (i = len - 1; i >= 0; i--)
1416 fprintf_unfiltered (file, "%02x", buf[i]);
1419 internal_error (__FILE__, __LINE__, "Bad switch");
1423 enum regcache_dump_what
1425 regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups
1429 regcache_dump (struct regcache *regcache, struct ui_file *file,
1430 enum regcache_dump_what what_to_dump)
1432 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
1433 struct gdbarch *gdbarch = regcache->descr->gdbarch;
1434 struct reggroup *const *groups = reggroups (gdbarch);
1436 int footnote_nr = 0;
1437 int footnote_register_size = 0;
1438 int footnote_register_offset = 0;
1439 int footnote_register_type_name_null = 0;
1440 long register_offset = 0;
1441 unsigned char buf[MAX_REGISTER_SIZE];
1444 fprintf_unfiltered (file, "legacy_p %d\n", regcache->descr->legacy_p);
1445 fprintf_unfiltered (file, "nr_raw_registers %d\n",
1446 regcache->descr->nr_raw_registers);
1447 fprintf_unfiltered (file, "nr_cooked_registers %d\n",
1448 regcache->descr->nr_cooked_registers);
1449 fprintf_unfiltered (file, "sizeof_raw_registers %ld\n",
1450 regcache->descr->sizeof_raw_registers);
1451 fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n",
1452 regcache->descr->sizeof_raw_register_valid_p);
1453 fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS);
1454 fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS);
1457 gdb_assert (regcache->descr->nr_cooked_registers
1458 == (NUM_REGS + NUM_PSEUDO_REGS));
1460 for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++)
1464 fprintf_unfiltered (file, " %-10s", "Name");
1467 const char *p = REGISTER_NAME (regnum);
1470 else if (p[0] == '\0')
1472 fprintf_unfiltered (file, " %-10s", p);
1477 fprintf_unfiltered (file, " %4s", "Nr");
1479 fprintf_unfiltered (file, " %4d", regnum);
1481 /* Relative number. */
1483 fprintf_unfiltered (file, " %4s", "Rel");
1484 else if (regnum < NUM_REGS)
1485 fprintf_unfiltered (file, " %4d", regnum);
1487 fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS));
1491 fprintf_unfiltered (file, " %6s ", "Offset");
1494 fprintf_unfiltered (file, " %6ld",
1495 regcache->descr->register_offset[regnum]);
1496 if (register_offset != regcache->descr->register_offset[regnum]
1497 || register_offset != REGISTER_BYTE (regnum)
1499 && (regcache->descr->register_offset[regnum]
1500 != (regcache->descr->register_offset[regnum - 1]
1501 + regcache->descr->sizeof_register[regnum - 1])))
1504 if (!footnote_register_offset)
1505 footnote_register_offset = ++footnote_nr;
1506 fprintf_unfiltered (file, "*%d", footnote_register_offset);
1509 fprintf_unfiltered (file, " ");
1510 register_offset = (regcache->descr->register_offset[regnum]
1511 + regcache->descr->sizeof_register[regnum]);
1516 fprintf_unfiltered (file, " %5s ", "Size");
1519 fprintf_unfiltered (file, " %5ld",
1520 regcache->descr->sizeof_register[regnum]);
1521 if ((regcache->descr->sizeof_register[regnum]
1522 != REGISTER_RAW_SIZE (regnum))
1523 || (regcache->descr->sizeof_register[regnum]
1524 != REGISTER_VIRTUAL_SIZE (regnum))
1525 || (regcache->descr->sizeof_register[regnum]
1526 != TYPE_LENGTH (register_type (regcache->descr->gdbarch,
1530 if (!footnote_register_size)
1531 footnote_register_size = ++footnote_nr;
1532 fprintf_unfiltered (file, "*%d", footnote_register_size);
1535 fprintf_unfiltered (file, " ");
1545 static const char blt[] = "builtin_type";
1546 t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum));
1550 if (!footnote_register_type_name_null)
1551 footnote_register_type_name_null = ++footnote_nr;
1552 xasprintf (&n, "*%d", footnote_register_type_name_null);
1553 make_cleanup (xfree, n);
1556 /* Chop a leading builtin_type. */
1557 if (strncmp (t, blt, strlen (blt)) == 0)
1560 fprintf_unfiltered (file, " %-15s", t);
1563 /* Leading space always present. */
1564 fprintf_unfiltered (file, " ");
1567 if (what_to_dump == regcache_dump_raw)
1570 fprintf_unfiltered (file, "Raw value");
1571 else if (regnum >= regcache->descr->nr_raw_registers)
1572 fprintf_unfiltered (file, "<cooked>");
1573 else if (!regcache_valid_p (regcache, regnum))
1574 fprintf_unfiltered (file, "<invalid>");
1577 regcache_raw_read (regcache, regnum, buf);
1578 fprintf_unfiltered (file, "0x");
1579 dump_endian_bytes (file, TARGET_BYTE_ORDER, buf,
1580 REGISTER_RAW_SIZE (regnum));
1584 /* Value, cooked. */
1585 if (what_to_dump == regcache_dump_cooked)
1588 fprintf_unfiltered (file, "Cooked value");
1591 regcache_cooked_read (regcache, regnum, buf);
1592 fprintf_unfiltered (file, "0x");
1593 dump_endian_bytes (file, TARGET_BYTE_ORDER, buf,
1594 REGISTER_VIRTUAL_SIZE (regnum));
1598 /* Group members. */
1599 if (what_to_dump == regcache_dump_groups)
1602 fprintf_unfiltered (file, "Groups");
1606 const char *sep = "";
1607 for (i = 0; groups[i] != NULL; i++)
1609 if (gdbarch_register_reggroup_p (gdbarch, regnum, groups[i]))
1611 fprintf_unfiltered (file, "%s%s", sep, reggroup_name (groups[i]));
1618 fprintf_unfiltered (file, "\n");
1621 if (footnote_register_size)
1622 fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n",
1623 footnote_register_size);
1624 if (footnote_register_offset)
1625 fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n",
1626 footnote_register_offset);
1627 if (footnote_register_type_name_null)
1628 fprintf_unfiltered (file,
1629 "*%d: Register type's name NULL.\n",
1630 footnote_register_type_name_null);
1631 do_cleanups (cleanups);
1635 regcache_print (char *args, enum regcache_dump_what what_to_dump)
1638 regcache_dump (current_regcache, gdb_stdout, what_to_dump);
1641 struct ui_file *file = gdb_fopen (args, "w");
1643 perror_with_name ("maintenance print architecture");
1644 regcache_dump (current_regcache, file, what_to_dump);
1645 ui_file_delete (file);
1650 maintenance_print_registers (char *args, int from_tty)
1652 regcache_print (args, regcache_dump_none);
1656 maintenance_print_raw_registers (char *args, int from_tty)
1658 regcache_print (args, regcache_dump_raw);
1662 maintenance_print_cooked_registers (char *args, int from_tty)
1664 regcache_print (args, regcache_dump_cooked);
1668 maintenance_print_register_groups (char *args, int from_tty)
1670 regcache_print (args, regcache_dump_groups);
1673 extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */
1676 _initialize_regcache (void)
1678 regcache_descr_handle = register_gdbarch_data (init_regcache_descr,
1679 xfree_regcache_descr);
1680 REGISTER_GDBARCH_SWAP (current_regcache);
1681 register_gdbarch_swap (&deprecated_registers, sizeof (deprecated_registers), NULL);
1682 register_gdbarch_swap (&deprecated_register_valid, sizeof (deprecated_register_valid), NULL);
1683 register_gdbarch_swap (NULL, 0, build_regcache);
1685 add_com ("flushregs", class_maintenance, reg_flush_command,
1686 "Force gdb to flush its register cache (maintainer command)");
1688 /* Initialize the thread/process associated with the current set of
1689 registers. For now, -1 is special, and means `no current process'. */
1690 registers_ptid = pid_to_ptid (-1);
1692 add_cmd ("registers", class_maintenance,
1693 maintenance_print_registers,
1694 "Print the internal register configuration.\
1695 Takes an optional file parameter.",
1696 &maintenanceprintlist);
1697 add_cmd ("raw-registers", class_maintenance,
1698 maintenance_print_raw_registers,
1699 "Print the internal register configuration including raw values.\
1700 Takes an optional file parameter.",
1701 &maintenanceprintlist);
1702 add_cmd ("cooked-registers", class_maintenance,
1703 maintenance_print_cooked_registers,
1704 "Print the internal register configuration including cooked values.\
1705 Takes an optional file parameter.",
1706 &maintenanceprintlist);
1707 add_cmd ("register-groups", class_maintenance,
1708 maintenance_print_register_groups,
1709 "Print the internal register configuration including each register's group.\
1710 Takes an optional file parameter.",
1711 &maintenanceprintlist);