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 "gdb_assert.h"
30 #include "gdb_string.h"
31 #include "gdbcmd.h" /* For maintenanceprintlist. */
36 * Here is the actual register cache.
39 /* Per-architecture object describing the layout of a register cache.
40 Computed once when the architecture is created */
42 struct gdbarch_data
*regcache_descr_handle
;
46 /* The architecture this descriptor belongs to. */
47 struct gdbarch
*gdbarch
;
49 /* Is this a ``legacy'' register cache? Such caches reserve space
50 for raw and pseudo registers and allow access to both. */
53 /* The raw register cache. This should contain just [0
54 .. NUM_RAW_REGISTERS). However, for older targets, it contains
55 space for the full [0 .. NUM_RAW_REGISTERS +
56 NUM_PSEUDO_REGISTERS). */
58 long sizeof_raw_registers
;
59 long sizeof_raw_register_valid_p
;
61 /* The cooked register space. Each cooked register in the range
62 [0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw
63 register. The remaining [NR_RAW_REGISTERS
64 .. NR_COOKED_REGISTERS) (a.k.a. pseudo regiters) are mapped onto
65 both raw registers and memory by the architecture methods
66 gdbarch_register_read and gdbarch_register_write. */
67 int nr_cooked_registers
;
69 /* Offset and size (in 8 bit bytes), of reach register in the
70 register cache. All registers (including those in the range
71 [NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset.
72 Assigning all registers an offset makes it possible to keep
73 legacy code, such as that found in read_register_bytes() and
74 write_register_bytes() working. */
75 long *register_offset
;
76 long *sizeof_register
;
78 /* Useful constant. Largest of all the registers. */
79 long max_register_size
;
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 buffer. Unfortunatly some architectures do. */
96 descr
->nr_raw_registers
= descr
->nr_cooked_registers
;
97 descr
->sizeof_raw_register_valid_p
= descr
->nr_cooked_registers
;
99 /* FIXME: cagney/2002-05-11: Instead of using REGISTER_BYTE() this
100 code should compute the offets et.al. at runtime. This currently
101 isn't possible because some targets overlap register locations -
102 see the mess in read_register_bytes() and write_register_bytes()
104 descr
->sizeof_register
= XCALLOC (descr
->nr_cooked_registers
, long);
105 descr
->register_offset
= XCALLOC (descr
->nr_cooked_registers
, long);
106 descr
->max_register_size
= 0;
107 for (i
= 0; i
< descr
->nr_cooked_registers
; i
++)
109 descr
->register_offset
[i
] = REGISTER_BYTE (i
);
110 descr
->sizeof_register
[i
] = REGISTER_RAW_SIZE (i
);
111 if (descr
->max_register_size
< REGISTER_RAW_SIZE (i
))
112 descr
->max_register_size
= REGISTER_RAW_SIZE (i
);
113 if (descr
->max_register_size
< REGISTER_VIRTUAL_SIZE (i
))
114 descr
->max_register_size
= REGISTER_VIRTUAL_SIZE (i
);
117 /* Come up with the real size of the registers buffer. */
118 descr
->sizeof_raw_registers
= REGISTER_BYTES
; /* OK use. */
119 for (i
= 0; i
< descr
->nr_cooked_registers
; i
++)
122 /* Keep extending the buffer so that there is always enough
123 space for all registers. The comparison is necessary since
124 legacy code is free to put registers in random places in the
125 buffer separated by holes. Once REGISTER_BYTE() is killed
126 this can be greatly simplified. */
127 /* FIXME: cagney/2001-12-04: This code shouldn't need to use
128 REGISTER_BYTE(). Unfortunatly, legacy code likes to lay the
129 buffer out so that certain registers just happen to overlap.
130 Ulgh! New targets use gdbarch's register read/write and
131 entirely avoid this uglyness. */
132 regend
= descr
->register_offset
[i
] + descr
->sizeof_register
[i
];
133 if (descr
->sizeof_raw_registers
< regend
)
134 descr
->sizeof_raw_registers
= regend
;
139 init_regcache_descr (struct gdbarch
*gdbarch
)
142 struct regcache_descr
*descr
;
143 gdb_assert (gdbarch
!= NULL
);
145 /* Create an initial, zero filled, table. */
146 descr
= XCALLOC (1, struct regcache_descr
);
147 descr
->gdbarch
= gdbarch
;
149 /* Total size of the register space. The raw registers are mapped
150 directly onto the raw register cache while the pseudo's are
151 either mapped onto raw-registers or memory. */
152 descr
->nr_cooked_registers
= NUM_REGS
+ NUM_PSEUDO_REGS
;
154 /* Fill in a table of register types. */
155 descr
->register_type
= XCALLOC (descr
->nr_cooked_registers
,
157 for (i
= 0; i
< descr
->nr_cooked_registers
; i
++)
159 descr
->register_type
[i
] = REGISTER_VIRTUAL_TYPE (i
);
162 /* If an old style architecture, fill in the remainder of the
163 register cache descriptor using the register macros. */
164 if (!gdbarch_pseudo_register_read_p (gdbarch
)
165 && !gdbarch_pseudo_register_write_p (gdbarch
))
168 init_legacy_regcache_descr (gdbarch
, descr
);
172 /* Construct a strictly RAW register cache. Don't allow pseudo's
173 into the register cache. */
174 descr
->nr_raw_registers
= NUM_REGS
;
176 /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p
177 array. This pretects GDB from erant code that accesses elements
178 of the global register_valid_p[] array in the range [NUM_REGS
179 .. NUM_REGS + NUM_PSEUDO_REGS). */
180 descr
->sizeof_raw_register_valid_p
= NUM_REGS
+ NUM_PSEUDO_REGS
;
182 /* Lay out the register cache. The pseud-registers are included in
183 the layout even though their value isn't stored in the register
184 cache. Some code, via read_register_bytes() access a register
185 using an offset/length rather than a register number.
187 NOTE: cagney/2002-05-22: Only register_type() is used when
188 constructing the register cache. It is assumed that the
189 register's raw size, virtual size and type length are all the
194 descr
->sizeof_register
= XCALLOC (descr
->nr_cooked_registers
, long);
195 descr
->register_offset
= XCALLOC (descr
->nr_cooked_registers
, long);
196 descr
->max_register_size
= 0;
197 for (i
= 0; i
< descr
->nr_cooked_registers
; i
++)
199 descr
->sizeof_register
[i
] = TYPE_LENGTH (descr
->register_type
[i
]);
200 descr
->register_offset
[i
] = offset
;
201 offset
+= descr
->sizeof_register
[i
];
202 if (descr
->max_register_size
< descr
->sizeof_register
[i
])
203 descr
->max_register_size
= descr
->sizeof_register
[i
];
205 /* Set the real size of the register cache buffer. */
206 /* FIXME: cagney/2002-05-22: Should only need to allocate space
207 for the raw registers. Unfortunatly some code still accesses
208 the register array directly using the global registers[].
209 Until that code has been purged, play safe and over allocating
210 the register buffer. Ulgh! */
211 descr
->sizeof_raw_registers
= offset
;
212 /* = descr->register_offset[descr->nr_raw_registers]; */
216 /* Sanity check. Confirm that the assumptions about gdbarch are
217 true. The REGCACHE_DESCR_HANDLE is set before doing the checks
218 so that targets using the generic methods supplied by regcache
219 don't go into infinite recursion trying to, again, create the
221 set_gdbarch_data (gdbarch
, regcache_descr_handle
, descr
);
222 for (i
= 0; i
< descr
->nr_cooked_registers
; i
++)
224 gdb_assert (descr
->sizeof_register
[i
] == REGISTER_RAW_SIZE (i
));
225 gdb_assert (descr
->sizeof_register
[i
] == REGISTER_VIRTUAL_SIZE (i
));
226 gdb_assert (descr
->register_offset
[i
] == REGISTER_BYTE (i
));
228 /* gdb_assert (descr->sizeof_raw_registers == REGISTER_BYTES (i)); */
234 static struct regcache_descr
*
235 regcache_descr (struct gdbarch
*gdbarch
)
237 return gdbarch_data (gdbarch
, regcache_descr_handle
);
241 xfree_regcache_descr (struct gdbarch
*gdbarch
, void *ptr
)
243 struct regcache_descr
*descr
= ptr
;
246 xfree (descr
->register_offset
);
247 xfree (descr
->sizeof_register
);
248 descr
->register_offset
= NULL
;
249 descr
->sizeof_register
= NULL
;
253 /* Utility functions returning useful register attributes stored in
254 the regcache descr. */
257 register_type (struct gdbarch
*gdbarch
, int regnum
)
259 struct regcache_descr
*descr
= regcache_descr (gdbarch
);
260 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_cooked_registers
);
261 return descr
->register_type
[regnum
];
264 /* Utility functions returning useful register attributes stored in
265 the regcache descr. */
268 max_register_size (struct gdbarch
*gdbarch
)
270 struct regcache_descr
*descr
= regcache_descr (gdbarch
);
271 return descr
->max_register_size
;
274 /* The register cache for storing raw register values. */
278 struct regcache_descr
*descr
;
280 char *raw_register_valid_p
;
281 /* If a value isn't in the cache should the corresponding target be
282 queried for a value. */
287 regcache_xmalloc (struct gdbarch
*gdbarch
)
289 struct regcache_descr
*descr
;
290 struct regcache
*regcache
;
291 gdb_assert (gdbarch
!= NULL
);
292 descr
= regcache_descr (gdbarch
);
293 regcache
= XMALLOC (struct regcache
);
294 regcache
->descr
= descr
;
295 regcache
->raw_registers
296 = XCALLOC (descr
->sizeof_raw_registers
, char);
297 regcache
->raw_register_valid_p
298 = XCALLOC (descr
->sizeof_raw_register_valid_p
, char);
299 regcache
->passthrough_p
= 0;
304 regcache_xfree (struct regcache
*regcache
)
306 if (regcache
== NULL
)
308 xfree (regcache
->raw_registers
);
309 xfree (regcache
->raw_register_valid_p
);
314 do_regcache_xfree (void *data
)
316 regcache_xfree (data
);
320 make_cleanup_regcache_xfree (struct regcache
*regcache
)
322 return make_cleanup (do_regcache_xfree
, regcache
);
326 regcache_cpy (struct regcache
*dst
, struct regcache
*src
)
330 gdb_assert (src
!= NULL
&& dst
!= NULL
);
331 gdb_assert (src
->descr
->gdbarch
== dst
->descr
->gdbarch
);
332 gdb_assert (src
!= dst
);
333 /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite.
334 It keeps the existing code working where things rely on going
335 through to the register cache. */
336 if (src
== current_regcache
&& src
->descr
->legacy_p
)
338 /* ULGH!!!! Old way. Use REGISTER bytes and let code below
340 read_register_bytes (0, dst
->raw_registers
, REGISTER_BYTES
);
343 /* FIXME: cagney/2002-05-17: To say this bit is bad is being polite.
344 It keeps the existing code working where things rely on going
345 through to the register cache. */
346 if (dst
== current_regcache
&& dst
->descr
->legacy_p
)
348 /* ULGH!!!! Old way. Use REGISTER bytes and let code below
350 write_register_bytes (0, src
->raw_registers
, REGISTER_BYTES
);
353 buf
= alloca (src
->descr
->max_register_size
);
354 for (i
= 0; i
< src
->descr
->nr_raw_registers
; i
++)
356 /* Should we worry about the valid bit here? */
357 regcache_raw_read (src
, i
, buf
);
358 regcache_raw_write (dst
, i
, buf
);
363 regcache_cpy_no_passthrough (struct regcache
*dst
, struct regcache
*src
)
366 gdb_assert (src
!= NULL
&& dst
!= NULL
);
367 gdb_assert (src
->descr
->gdbarch
== dst
->descr
->gdbarch
);
368 /* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough
369 move of data into the current_regcache(). Doing this would be
370 silly - it would mean that valid_p would be completly invalid. */
371 gdb_assert (dst
!= current_regcache
);
372 memcpy (dst
->raw_registers
, src
->raw_registers
,
373 dst
->descr
->sizeof_raw_registers
);
374 memcpy (dst
->raw_register_valid_p
, src
->raw_register_valid_p
,
375 dst
->descr
->sizeof_raw_register_valid_p
);
379 regcache_dup (struct regcache
*src
)
381 struct regcache
*newbuf
;
382 gdb_assert (current_regcache
!= NULL
);
383 newbuf
= regcache_xmalloc (src
->descr
->gdbarch
);
384 regcache_cpy (newbuf
, src
);
389 regcache_dup_no_passthrough (struct regcache
*src
)
391 struct regcache
*newbuf
;
392 gdb_assert (current_regcache
!= NULL
);
393 newbuf
= regcache_xmalloc (src
->descr
->gdbarch
);
394 regcache_cpy_no_passthrough (newbuf
, src
);
399 regcache_valid_p (struct regcache
*regcache
, int regnum
)
401 gdb_assert (regcache
!= NULL
);
402 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
403 return regcache
->raw_register_valid_p
[regnum
];
407 deprecated_grub_regcache_for_registers (struct regcache
*regcache
)
409 return regcache
->raw_registers
;
413 deprecated_grub_regcache_for_register_valid (struct regcache
*regcache
)
415 return regcache
->raw_register_valid_p
;
418 /* Global structure containing the current regcache. */
419 /* FIXME: cagney/2002-05-11: The two global arrays registers[] and
420 register_valid[] currently point into this structure. */
421 struct regcache
*current_regcache
;
423 /* NOTE: this is a write-through cache. There is no "dirty" bit for
424 recording if the register values have been changed (eg. by the
425 user). Therefore all registers must be written back to the
426 target when appropriate. */
428 /* REGISTERS contains the cached register values (in target byte order). */
432 /* REGISTER_VALID is 0 if the register needs to be fetched,
433 1 if it has been fetched, and
434 -1 if the register value was not available.
436 "Not available" indicates that the target is not not able to supply
437 the register at this state. The register may become available at a
438 later time (after the next resume). This often occures when GDB is
439 manipulating a target that contains only a snapshot of the entire
440 system being debugged - some of the registers in such a system may
441 not have been saved. */
443 signed char *register_valid
;
445 /* The thread/process associated with the current set of registers. */
447 static ptid_t registers_ptid
;
455 Returns 0 if the value is not in the cache (needs fetch).
456 >0 if the value is in the cache.
457 <0 if the value is permanently unavailable (don't ask again). */
460 register_cached (int regnum
)
462 return register_valid
[regnum
];
465 /* Record that REGNUM's value is cached if STATE is >0, uncached but
466 fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */
469 set_register_cached (int regnum
, int state
)
471 gdb_assert (regnum
>= 0);
472 gdb_assert (regnum
< current_regcache
->descr
->nr_raw_registers
);
473 current_regcache
->raw_register_valid_p
[regnum
] = state
;
478 invalidate a single register REGNUM in the cache */
480 register_changed (int regnum
)
482 set_register_cached (regnum
, 0);
485 /* If REGNUM >= 0, return a pointer to register REGNUM's cache buffer area,
486 else return a pointer to the start of the cache buffer. */
489 register_buffer (struct regcache
*regcache
, int regnum
)
491 return regcache
->raw_registers
+ regcache
->descr
->register_offset
[regnum
];
494 /* Return whether register REGNUM is a real register. */
497 real_register (int regnum
)
499 return regnum
>= 0 && regnum
< NUM_REGS
;
502 /* Low level examining and depositing of registers.
504 The caller is responsible for making sure that the inferior is
505 stopped before calling the fetching routines, or it will get
506 garbage. (a change from GDB version 3, in which the caller got the
507 value from the last stop). */
509 /* REGISTERS_CHANGED ()
511 Indicate that registers may have changed, so invalidate the cache. */
514 registers_changed (void)
518 registers_ptid
= pid_to_ptid (-1);
520 /* Force cleanup of any alloca areas if using C alloca instead of
521 a builtin alloca. This particular call is used to clean up
522 areas allocated by low level target code which may build up
523 during lengthy interactions between gdb and the target before
524 gdb gives control to the user (ie watchpoints). */
527 for (i
= 0; i
< current_regcache
->descr
->nr_raw_registers
; i
++)
528 set_register_cached (i
, 0);
530 if (registers_changed_hook
)
531 registers_changed_hook ();
534 /* REGISTERS_FETCHED ()
536 Indicate that all registers have been fetched, so mark them all valid. */
538 /* NOTE: cagney/2001-12-04: This function does not set valid on the
539 pseudo-register range since pseudo registers are always supplied
540 using supply_register(). */
541 /* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target
542 code was blatting the registers[] array and then calling this.
543 Since targets should only be using supply_register() the need for
544 this function/hack is eliminated. */
547 registers_fetched (void)
551 for (i
= 0; i
< NUM_REGS
; i
++)
552 set_register_cached (i
, 1);
553 /* Do not assume that the pseudo-regs have also been fetched.
554 Fetching all real regs NEVER accounts for pseudo-regs. */
557 /* read_register_bytes and write_register_bytes are generally a *BAD*
558 idea. They are inefficient because they need to check for partial
559 updates, which can only be done by scanning through all of the
560 registers and seeing if the bytes that are being read/written fall
561 inside of an invalid register. [The main reason this is necessary
562 is that register sizes can vary, so a simple index won't suffice.]
563 It is far better to call read_register_gen and write_register_gen
564 if you want to get at the raw register contents, as it only takes a
565 regnum as an argument, and therefore can't do a partial register
568 Prior to the recent fixes to check for partial updates, both read
569 and write_register_bytes always checked to see if any registers
570 were stale, and then called target_fetch_registers (-1) to update
571 the whole set. This caused really slowed things down for remote
574 /* Copy INLEN bytes of consecutive data from registers
575 starting with the INREGBYTE'th byte of register data
576 into memory at MYADDR. */
579 read_register_bytes (int in_start
, char *in_buf
, int in_len
)
581 int in_end
= in_start
+ in_len
;
583 char *reg_buf
= alloca (MAX_REGISTER_RAW_SIZE
);
585 /* See if we are trying to read bytes from out-of-date registers. If so,
586 update just those registers. */
588 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
597 reg_start
= REGISTER_BYTE (regnum
);
598 reg_len
= REGISTER_RAW_SIZE (regnum
);
599 reg_end
= reg_start
+ reg_len
;
601 if (reg_end
<= in_start
|| in_end
<= reg_start
)
602 /* The range the user wants to read doesn't overlap with regnum. */
605 if (REGISTER_NAME (regnum
) != NULL
&& *REGISTER_NAME (regnum
) != '\0')
606 /* Force the cache to fetch the entire register. */
607 read_register_gen (regnum
, reg_buf
);
609 /* Legacy note: even though this register is ``invalid'' we
610 still need to return something. It would appear that some
611 code relies on apparent gaps in the register array also
613 /* FIXME: cagney/2001-08-18: This is just silly. It defeats
614 the entire register read/write flow of control. Must
615 resist temptation to return 0xdeadbeef. */
616 memcpy (reg_buf
, registers
+ reg_start
, reg_len
);
618 /* Legacy note: This function, for some reason, allows a NULL
619 input buffer. If the buffer is NULL, the registers are still
620 fetched, just the final transfer is skipped. */
624 /* start = max (reg_start, in_start) */
625 if (reg_start
> in_start
)
630 /* end = min (reg_end, in_end) */
631 if (reg_end
< in_end
)
636 /* Transfer just the bytes common to both IN_BUF and REG_BUF */
637 for (byte
= start
; byte
< end
; byte
++)
639 in_buf
[byte
- in_start
] = reg_buf
[byte
- reg_start
];
644 /* Read register REGNUM into memory at MYADDR, which must be large
645 enough for REGISTER_RAW_BYTES (REGNUM). Target byte-order. If the
646 register is known to be the size of a CORE_ADDR or smaller,
647 read_register can be used instead. */
650 legacy_read_register_gen (int regnum
, char *myaddr
)
652 gdb_assert (regnum
>= 0 && regnum
< (NUM_REGS
+ NUM_PSEUDO_REGS
));
653 if (! ptid_equal (registers_ptid
, inferior_ptid
))
655 registers_changed ();
656 registers_ptid
= inferior_ptid
;
659 if (!register_cached (regnum
))
660 target_fetch_registers (regnum
);
662 memcpy (myaddr
, register_buffer (current_regcache
, regnum
),
663 REGISTER_RAW_SIZE (regnum
));
667 regcache_raw_read (struct regcache
*regcache
, int regnum
, void *buf
)
669 gdb_assert (regcache
!= NULL
&& buf
!= NULL
);
670 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
671 if (regcache
->descr
->legacy_p
672 && regcache
->passthrough_p
)
674 gdb_assert (regcache
== current_regcache
);
675 /* For moment, just use underlying legacy code. Ulgh!!! This
676 silently and very indirectly updates the regcache's regcache
677 via the global register_valid[]. */
678 legacy_read_register_gen (regnum
, buf
);
681 /* Make certain that the register cache is up-to-date with respect
682 to the current thread. This switching shouldn't be necessary
683 only there is still only one target side register cache. Sigh!
684 On the bright side, at least there is a regcache object. */
685 if (regcache
->passthrough_p
)
687 gdb_assert (regcache
== current_regcache
);
688 if (! ptid_equal (registers_ptid
, inferior_ptid
))
690 registers_changed ();
691 registers_ptid
= inferior_ptid
;
693 if (!register_cached (regnum
))
694 target_fetch_registers (regnum
);
696 /* Copy the value directly into the register cache. */
697 memcpy (buf
, (regcache
->raw_registers
698 + regcache
->descr
->register_offset
[regnum
]),
699 regcache
->descr
->sizeof_register
[regnum
]);
703 regcache_raw_read_signed (struct regcache
*regcache
, int regnum
, LONGEST
*val
)
706 gdb_assert (regcache
!= NULL
);
707 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
708 buf
= alloca (regcache
->descr
->sizeof_register
[regnum
]);
709 regcache_raw_read (regcache
, regnum
, buf
);
710 (*val
) = extract_signed_integer (buf
,
711 regcache
->descr
->sizeof_register
[regnum
]);
715 regcache_raw_read_unsigned (struct regcache
*regcache
, int regnum
,
719 gdb_assert (regcache
!= NULL
);
720 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
721 buf
= alloca (regcache
->descr
->sizeof_register
[regnum
]);
722 regcache_raw_read (regcache
, regnum
, buf
);
723 (*val
) = extract_unsigned_integer (buf
,
724 regcache
->descr
->sizeof_register
[regnum
]);
728 read_register_gen (int regnum
, char *buf
)
730 gdb_assert (current_regcache
!= NULL
);
731 gdb_assert (current_regcache
->descr
->gdbarch
== current_gdbarch
);
732 if (current_regcache
->descr
->legacy_p
)
734 legacy_read_register_gen (regnum
, buf
);
737 regcache_cooked_read (current_regcache
, regnum
, buf
);
741 regcache_cooked_read (struct regcache
*regcache
, int regnum
, void *buf
)
743 gdb_assert (regnum
>= 0);
744 gdb_assert (regnum
< regcache
->descr
->nr_cooked_registers
);
745 if (regnum
< regcache
->descr
->nr_raw_registers
)
746 regcache_raw_read (regcache
, regnum
, buf
);
748 gdbarch_pseudo_register_read (regcache
->descr
->gdbarch
, regcache
,
753 regcache_cooked_read_signed (struct regcache
*regcache
, int regnum
,
757 gdb_assert (regcache
!= NULL
);
758 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
759 buf
= alloca (regcache
->descr
->sizeof_register
[regnum
]);
760 regcache_cooked_read (regcache
, regnum
, buf
);
761 (*val
) = extract_signed_integer (buf
,
762 regcache
->descr
->sizeof_register
[regnum
]);
766 regcache_cooked_read_unsigned (struct regcache
*regcache
, int regnum
,
770 gdb_assert (regcache
!= NULL
);
771 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
772 buf
= alloca (regcache
->descr
->sizeof_register
[regnum
]);
773 regcache_cooked_read (regcache
, regnum
, buf
);
774 (*val
) = extract_unsigned_integer (buf
,
775 regcache
->descr
->sizeof_register
[regnum
]);
778 /* Write register REGNUM at MYADDR to the target. MYADDR points at
779 REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */
782 legacy_write_register_gen (int regnum
, const void *myaddr
)
785 gdb_assert (regnum
>= 0 && regnum
< (NUM_REGS
+ NUM_PSEUDO_REGS
));
787 /* On the sparc, writing %g0 is a no-op, so we don't even want to
788 change the registers array if something writes to this register. */
789 if (CANNOT_STORE_REGISTER (regnum
))
792 if (! ptid_equal (registers_ptid
, inferior_ptid
))
794 registers_changed ();
795 registers_ptid
= inferior_ptid
;
798 size
= REGISTER_RAW_SIZE (regnum
);
800 if (real_register (regnum
))
802 /* If we have a valid copy of the register, and new value == old
803 value, then don't bother doing the actual store. */
804 if (register_cached (regnum
)
805 && (memcmp (register_buffer (current_regcache
, regnum
), myaddr
, size
)
809 target_prepare_to_store ();
812 memcpy (register_buffer (current_regcache
, regnum
), myaddr
, size
);
814 set_register_cached (regnum
, 1);
815 target_store_registers (regnum
);
819 regcache_raw_write (struct regcache
*regcache
, int regnum
, const void *buf
)
821 gdb_assert (regcache
!= NULL
&& buf
!= NULL
);
822 gdb_assert (regnum
>= 0 && regnum
< regcache
->descr
->nr_raw_registers
);
824 if (regcache
->passthrough_p
825 && regcache
->descr
->legacy_p
)
827 /* For moment, just use underlying legacy code. Ulgh!!! This
828 silently and very indirectly updates the regcache's buffers
829 via the globals register_valid[] and registers[]. */
830 gdb_assert (regcache
== current_regcache
);
831 legacy_write_register_gen (regnum
, buf
);
835 /* On the sparc, writing %g0 is a no-op, so we don't even want to
836 change the registers array if something writes to this register. */
837 if (CANNOT_STORE_REGISTER (regnum
))
840 /* Handle the simple case first -> not write through so just store
842 if (!regcache
->passthrough_p
)
844 memcpy ((regcache
->raw_registers
845 + regcache
->descr
->register_offset
[regnum
]), buf
,
846 regcache
->descr
->sizeof_register
[regnum
]);
847 regcache
->raw_register_valid_p
[regnum
] = 1;
851 /* Make certain that the correct cache is selected. */
852 gdb_assert (regcache
== current_regcache
);
853 if (! ptid_equal (registers_ptid
, inferior_ptid
))
855 registers_changed ();
856 registers_ptid
= inferior_ptid
;
859 /* If we have a valid copy of the register, and new value == old
860 value, then don't bother doing the actual store. */
861 if (regcache_valid_p (regcache
, regnum
)
862 && (memcmp (register_buffer (regcache
, regnum
), buf
,
863 regcache
->descr
->sizeof_register
[regnum
]) == 0))
866 target_prepare_to_store ();
867 memcpy (register_buffer (regcache
, regnum
), buf
,
868 regcache
->descr
->sizeof_register
[regnum
]);
869 regcache
->raw_register_valid_p
[regnum
] = 1;
870 target_store_registers (regnum
);
874 write_register_gen (int regnum
, char *buf
)
876 gdb_assert (current_regcache
!= NULL
);
877 gdb_assert (current_regcache
->descr
->gdbarch
== current_gdbarch
);
878 if (current_regcache
->descr
->legacy_p
)
880 legacy_write_register_gen (regnum
, buf
);
883 regcache_cooked_write (current_regcache
, regnum
, buf
);
887 regcache_cooked_write (struct regcache
*regcache
, int regnum
, const void *buf
)
889 gdb_assert (regnum
>= 0);
890 gdb_assert (regnum
< regcache
->descr
->nr_cooked_registers
);
891 if (regnum
< regcache
->descr
->nr_raw_registers
)
892 regcache_raw_write (regcache
, regnum
, buf
);
894 gdbarch_pseudo_register_write (regcache
->descr
->gdbarch
, regcache
,
898 /* Copy INLEN bytes of consecutive data from memory at MYADDR
899 into registers starting with the MYREGSTART'th byte of register data. */
902 write_register_bytes (int myregstart
, char *myaddr
, int inlen
)
904 int myregend
= myregstart
+ inlen
;
907 target_prepare_to_store ();
909 /* Scan through the registers updating any that are covered by the
910 range myregstart<=>myregend using write_register_gen, which does
911 nice things like handling threads, and avoiding updates when the
912 new and old contents are the same. */
914 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
916 int regstart
, regend
;
918 regstart
= REGISTER_BYTE (regnum
);
919 regend
= regstart
+ REGISTER_RAW_SIZE (regnum
);
921 /* Is this register completely outside the range the user is writing? */
922 if (myregend
<= regstart
|| regend
<= myregstart
)
925 /* Is this register completely within the range the user is writing? */
926 else if (myregstart
<= regstart
&& regend
<= myregend
)
927 write_register_gen (regnum
, myaddr
+ (regstart
- myregstart
));
929 /* The register partially overlaps the range being written. */
932 char *regbuf
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
933 /* What's the overlap between this register's bytes and
934 those the caller wants to write? */
935 int overlapstart
= max (regstart
, myregstart
);
936 int overlapend
= min (regend
, myregend
);
938 /* We may be doing a partial update of an invalid register.
939 Update it from the target before scribbling on it. */
940 read_register_gen (regnum
, regbuf
);
942 memcpy (registers
+ overlapstart
,
943 myaddr
+ (overlapstart
- myregstart
),
944 overlapend
- overlapstart
);
946 target_store_registers (regnum
);
951 /* Perform a partial register transfer using a read, modify, write
954 typedef void (regcache_read_ftype
) (struct regcache
*regcache
, int regnum
,
956 typedef void (regcache_write_ftype
) (struct regcache
*regcache
, int regnum
,
960 regcache_xfer_part (struct regcache
*regcache
, int regnum
,
961 int offset
, int len
, void *in
, const void *out
,
962 regcache_read_ftype
*read
, regcache_write_ftype
*write
)
964 struct regcache_descr
*descr
= regcache
->descr
;
965 bfd_byte
*reg
= alloca (descr
->max_register_size
);
966 gdb_assert (offset
>= 0 && offset
<= descr
->sizeof_register
[regnum
]);
967 gdb_assert (len
>= 0 && offset
+ len
<= descr
->sizeof_register
[regnum
]);
968 /* Something to do? */
969 if (offset
+ len
== 0)
971 /* Read (when needed) ... */
974 || offset
+ len
< descr
->sizeof_register
[regnum
])
976 gdb_assert (read
!= NULL
);
977 read (regcache
, regnum
, reg
);
981 memcpy (in
, reg
+ offset
, len
);
983 memcpy (reg
+ offset
, out
, len
);
984 /* ... write (when needed). */
987 gdb_assert (write
!= NULL
);
988 write (regcache
, regnum
, reg
);
993 regcache_raw_read_part (struct regcache
*regcache
, int regnum
,
994 int offset
, int len
, void *buf
)
996 struct regcache_descr
*descr
= regcache
->descr
;
997 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_raw_registers
);
998 regcache_xfer_part (regcache
, regnum
, offset
, len
, buf
, NULL
,
999 regcache_raw_read
, regcache_raw_write
);
1003 regcache_raw_write_part (struct regcache
*regcache
, int regnum
,
1004 int offset
, int len
, const void *buf
)
1006 struct regcache_descr
*descr
= regcache
->descr
;
1007 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_raw_registers
);
1008 regcache_xfer_part (regcache
, regnum
, offset
, len
, NULL
, buf
,
1009 regcache_raw_read
, regcache_raw_write
);
1013 regcache_cooked_read_part (struct regcache
*regcache
, int regnum
,
1014 int offset
, int len
, void *buf
)
1016 struct regcache_descr
*descr
= regcache
->descr
;
1017 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_cooked_registers
);
1018 regcache_xfer_part (regcache
, regnum
, offset
, len
, buf
, NULL
,
1019 regcache_cooked_read
, regcache_cooked_write
);
1023 regcache_cooked_write_part (struct regcache
*regcache
, int regnum
,
1024 int offset
, int len
, const void *buf
)
1026 struct regcache_descr
*descr
= regcache
->descr
;
1027 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_cooked_registers
);
1028 regcache_xfer_part (regcache
, regnum
, offset
, len
, NULL
, buf
,
1029 regcache_cooked_read
, regcache_cooked_write
);
1032 /* Hack to keep code that view the register buffer as raw bytes
1036 register_offset_hack (struct gdbarch
*gdbarch
, int regnum
)
1038 struct regcache_descr
*descr
= regcache_descr (gdbarch
);
1039 gdb_assert (regnum
>= 0 && regnum
< descr
->nr_cooked_registers
);
1040 return descr
->register_offset
[regnum
];
1044 cooked_xfer_using_offset_hack (struct regcache
*regcache
,
1045 int buf_start
, int buf_len
, void *in_b
,
1048 struct regcache_descr
*descr
= regcache
->descr
;
1049 struct gdbarch
*gdbarch
= descr
->gdbarch
;
1050 bfd_byte
*in_buf
= in_b
;
1051 const bfd_byte
*out_buf
= out_b
;
1052 int buf_end
= buf_start
+ buf_len
;
1054 char *reg_buf
= alloca (descr
->max_register_size
);
1056 /* NOTE: cagney/2002-08-17: This code assumes that the register
1057 offsets are strictly increasing and do not overlap. If this
1058 isn't the case then the bug is in the target architecture and NOT
1061 /* NOTE: cagney/2002-08-17: This code assumes that only the
1062 registers covered by BUF_START:BUF_LEN should be transfered. If,
1063 for some reason, there is a gap between two registers, then that
1064 gap isn't transfered. (The gap shouldn't be there but that is
1067 /* Iterate through all registers looking for those that lie within
1068 BUF_START:BUF_LEN. */
1070 for (regnum
= 0; regnum
< descr
->nr_cooked_registers
; regnum
++)
1072 /* The register's location. */
1073 int reg_start
= descr
->register_offset
[regnum
];
1074 int reg_len
= descr
->sizeof_register
[regnum
];
1075 int reg_end
= reg_start
+ reg_len
;
1077 /* The START, END and LEN that falls within the current
1083 /* start = max (reg_start, buf_start) */
1084 if (reg_start
> buf_start
)
1085 xfer_start
= reg_start
;
1087 xfer_start
= buf_start
;
1089 /* end = min (reg_end, buf_end) */
1090 if (reg_end
< buf_end
)
1095 /* The number of bytes to transfer. If there isn't anything to
1096 transfer (the end is before the start) this will be -ve. */
1097 xfer_len
= xfer_end
- xfer_start
;
1100 regcache_xfer_part (regcache
, regnum
, xfer_start
- reg_start
,
1101 xfer_len
, in_b
, out_b
, regcache_cooked_read
,
1102 regcache_cooked_write
);
1107 regcache_cooked_read_using_offset_hack (struct regcache
*regcache
,
1108 int buf_start
, int buf_len
, void *b
)
1110 cooked_xfer_using_offset_hack (regcache
, buf_start
, buf_len
, b
, NULL
);
1114 regcache_cooked_write_using_offset_hack (struct regcache
*regcache
,
1115 int buf_start
, int buf_len
,
1118 cooked_xfer_using_offset_hack (regcache
, buf_start
, buf_len
, NULL
, b
);
1121 /* Return the contents of register REGNUM as an unsigned integer. */
1124 read_register (int regnum
)
1126 char *buf
= alloca (REGISTER_RAW_SIZE (regnum
));
1127 read_register_gen (regnum
, buf
);
1128 return (extract_unsigned_integer (buf
, REGISTER_RAW_SIZE (regnum
)));
1132 read_register_pid (int regnum
, ptid_t ptid
)
1138 if (ptid_equal (ptid
, inferior_ptid
))
1139 return read_register (regnum
);
1141 save_ptid
= inferior_ptid
;
1143 inferior_ptid
= ptid
;
1145 retval
= read_register (regnum
);
1147 inferior_ptid
= save_ptid
;
1152 /* Return the contents of register REGNUM as a signed integer. */
1155 read_signed_register (int regnum
)
1157 void *buf
= alloca (REGISTER_RAW_SIZE (regnum
));
1158 read_register_gen (regnum
, buf
);
1159 return (extract_signed_integer (buf
, REGISTER_RAW_SIZE (regnum
)));
1163 read_signed_register_pid (int regnum
, ptid_t ptid
)
1168 if (ptid_equal (ptid
, inferior_ptid
))
1169 return read_signed_register (regnum
);
1171 save_ptid
= inferior_ptid
;
1173 inferior_ptid
= ptid
;
1175 retval
= read_signed_register (regnum
);
1177 inferior_ptid
= save_ptid
;
1182 /* Store VALUE into the raw contents of register number REGNUM. */
1185 write_register (int regnum
, LONGEST val
)
1189 size
= REGISTER_RAW_SIZE (regnum
);
1190 buf
= alloca (size
);
1191 store_signed_integer (buf
, size
, (LONGEST
) val
);
1192 write_register_gen (regnum
, buf
);
1196 write_register_pid (int regnum
, CORE_ADDR val
, ptid_t ptid
)
1200 if (ptid_equal (ptid
, inferior_ptid
))
1202 write_register (regnum
, val
);
1206 save_ptid
= inferior_ptid
;
1208 inferior_ptid
= ptid
;
1210 write_register (regnum
, val
);
1212 inferior_ptid
= save_ptid
;
1215 /* SUPPLY_REGISTER()
1217 Record that register REGNUM contains VAL. This is used when the
1218 value is obtained from the inferior or core dump, so there is no
1219 need to store the value there.
1221 If VAL is a NULL pointer, then it's probably an unsupported register.
1222 We just set its value to all zeros. We might want to record this
1223 fact, and report it to the users of read_register and friends. */
1226 supply_register (int regnum
, const void *val
)
1229 if (! ptid_equal (registers_ptid
, inferior_ptid
))
1231 registers_changed ();
1232 registers_ptid
= inferior_ptid
;
1236 set_register_cached (regnum
, 1);
1238 memcpy (register_buffer (current_regcache
, regnum
), val
,
1239 REGISTER_RAW_SIZE (regnum
));
1241 memset (register_buffer (current_regcache
, regnum
), '\000',
1242 REGISTER_RAW_SIZE (regnum
));
1244 /* On some architectures, e.g. HPPA, there are a few stray bits in
1245 some registers, that the rest of the code would like to ignore. */
1247 /* NOTE: cagney/2001-03-16: The macro CLEAN_UP_REGISTER_VALUE is
1248 going to be deprecated. Instead architectures will leave the raw
1249 register value as is and instead clean things up as they pass
1250 through the method gdbarch_pseudo_register_read() clean up the
1253 #ifdef DEPRECATED_CLEAN_UP_REGISTER_VALUE
1254 DEPRECATED_CLEAN_UP_REGISTER_VALUE \
1255 (regnum
, register_buffer (current_regcache
, regnum
));
1260 regcache_collect (int regnum
, void *buf
)
1262 memcpy (buf
, register_buffer (current_regcache
, regnum
),
1263 REGISTER_RAW_SIZE (regnum
));
1267 /* read_pc, write_pc, read_sp, write_sp, read_fp, etc. Special
1268 handling for registers PC, SP, and FP. */
1270 /* NOTE: cagney/2001-02-18: The functions generic_target_read_pc(),
1271 read_pc_pid(), read_pc(), generic_target_write_pc(),
1272 write_pc_pid(), write_pc(), generic_target_read_sp(), read_sp(),
1273 generic_target_write_sp(), write_sp(), generic_target_read_fp() and
1274 read_fp(), will eventually be moved out of the reg-cache into
1275 either frame.[hc] or to the multi-arch framework. The are not part
1276 of the raw register cache. */
1278 /* This routine is getting awfully cluttered with #if's. It's probably
1279 time to turn this into READ_PC and define it in the tm.h file.
1282 1999-06-08: The following were re-written so that it assumes the
1283 existence of a TARGET_READ_PC et.al. macro. A default generic
1284 version of that macro is made available where needed.
1286 Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled
1287 by the multi-arch framework, it will eventually be possible to
1288 eliminate the intermediate read_pc_pid(). The client would call
1289 TARGET_READ_PC directly. (cagney). */
1292 generic_target_read_pc (ptid_t ptid
)
1297 CORE_ADDR pc_val
= ADDR_BITS_REMOVE ((CORE_ADDR
) read_register_pid (PC_REGNUM
, ptid
));
1301 internal_error (__FILE__
, __LINE__
,
1302 "generic_target_read_pc");
1307 read_pc_pid (ptid_t ptid
)
1309 ptid_t saved_inferior_ptid
;
1312 /* In case ptid != inferior_ptid. */
1313 saved_inferior_ptid
= inferior_ptid
;
1314 inferior_ptid
= ptid
;
1316 pc_val
= TARGET_READ_PC (ptid
);
1318 inferior_ptid
= saved_inferior_ptid
;
1325 return read_pc_pid (inferior_ptid
);
1329 generic_target_write_pc (CORE_ADDR pc
, ptid_t ptid
)
1333 write_register_pid (PC_REGNUM
, pc
, ptid
);
1334 if (NPC_REGNUM
>= 0)
1335 write_register_pid (NPC_REGNUM
, pc
+ 4, ptid
);
1337 internal_error (__FILE__
, __LINE__
,
1338 "generic_target_write_pc");
1343 write_pc_pid (CORE_ADDR pc
, ptid_t ptid
)
1345 ptid_t saved_inferior_ptid
;
1347 /* In case ptid != inferior_ptid. */
1348 saved_inferior_ptid
= inferior_ptid
;
1349 inferior_ptid
= ptid
;
1351 TARGET_WRITE_PC (pc
, ptid
);
1353 inferior_ptid
= saved_inferior_ptid
;
1357 write_pc (CORE_ADDR pc
)
1359 write_pc_pid (pc
, inferior_ptid
);
1362 /* Cope with strage ways of getting to the stack and frame pointers */
1365 generic_target_read_sp (void)
1369 return read_register (SP_REGNUM
);
1371 internal_error (__FILE__
, __LINE__
,
1372 "generic_target_read_sp");
1378 return TARGET_READ_SP ();
1382 generic_target_write_sp (CORE_ADDR val
)
1387 write_register (SP_REGNUM
, val
);
1391 internal_error (__FILE__
, __LINE__
,
1392 "generic_target_write_sp");
1396 write_sp (CORE_ADDR val
)
1398 TARGET_WRITE_SP (val
);
1402 generic_target_read_fp (void)
1406 return read_register (FP_REGNUM
);
1408 internal_error (__FILE__
, __LINE__
,
1409 "generic_target_read_fp");
1415 return TARGET_READ_FP ();
1420 reg_flush_command (char *command
, int from_tty
)
1422 /* Force-flush the register cache. */
1423 registers_changed ();
1425 printf_filtered ("Register cache flushed.\n");
1429 build_regcache (void)
1431 current_regcache
= regcache_xmalloc (current_gdbarch
);
1432 current_regcache
->passthrough_p
= 1;
1433 registers
= deprecated_grub_regcache_for_registers (current_regcache
);
1434 register_valid
= deprecated_grub_regcache_for_register_valid (current_regcache
);
1438 dump_endian_bytes (struct ui_file
*file
, enum bfd_endian endian
,
1439 const unsigned char *buf
, long len
)
1444 case BFD_ENDIAN_BIG
:
1445 for (i
= 0; i
< len
; i
++)
1446 fprintf_unfiltered (file
, "%02x", buf
[i
]);
1448 case BFD_ENDIAN_LITTLE
:
1449 for (i
= len
- 1; i
>= 0; i
--)
1450 fprintf_unfiltered (file
, "%02x", buf
[i
]);
1453 internal_error (__FILE__
, __LINE__
, "Bad switch");
1457 enum regcache_dump_what
1459 regcache_dump_none
, regcache_dump_raw
, regcache_dump_cooked
1463 regcache_dump (struct regcache
*regcache
, struct ui_file
*file
,
1464 enum regcache_dump_what what_to_dump
)
1466 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
1468 int footnote_nr
= 0;
1469 int footnote_register_size
= 0;
1470 int footnote_register_offset
= 0;
1471 int footnote_register_type_name_null
= 0;
1472 long register_offset
= 0;
1473 unsigned char *buf
= alloca (regcache
->descr
->max_register_size
);
1476 fprintf_unfiltered (file
, "legacy_p %d\n", regcache
->descr
->legacy_p
);
1477 fprintf_unfiltered (file
, "nr_raw_registers %d\n",
1478 regcache
->descr
->nr_raw_registers
);
1479 fprintf_unfiltered (file
, "nr_cooked_registers %d\n",
1480 regcache
->descr
->nr_cooked_registers
);
1481 fprintf_unfiltered (file
, "sizeof_raw_registers %ld\n",
1482 regcache
->descr
->sizeof_raw_registers
);
1483 fprintf_unfiltered (file
, "sizeof_raw_register_valid_p %ld\n",
1484 regcache
->descr
->sizeof_raw_register_valid_p
);
1485 fprintf_unfiltered (file
, "max_register_size %ld\n",
1486 regcache
->descr
->max_register_size
);
1487 fprintf_unfiltered (file
, "NUM_REGS %d\n", NUM_REGS
);
1488 fprintf_unfiltered (file
, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS
);
1491 gdb_assert (regcache
->descr
->nr_cooked_registers
1492 == (NUM_REGS
+ NUM_PSEUDO_REGS
));
1494 for (regnum
= -1; regnum
< regcache
->descr
->nr_cooked_registers
; regnum
++)
1498 fprintf_unfiltered (file
, " %-10s", "Name");
1501 const char *p
= REGISTER_NAME (regnum
);
1504 else if (p
[0] == '\0')
1506 fprintf_unfiltered (file
, " %-10s", p
);
1511 fprintf_unfiltered (file
, " %4s", "Nr");
1513 fprintf_unfiltered (file
, " %4d", regnum
);
1515 /* Relative number. */
1517 fprintf_unfiltered (file
, " %4s", "Rel");
1518 else if (regnum
< NUM_REGS
)
1519 fprintf_unfiltered (file
, " %4d", regnum
);
1521 fprintf_unfiltered (file
, " %4d", (regnum
- NUM_REGS
));
1525 fprintf_unfiltered (file
, " %6s ", "Offset");
1528 fprintf_unfiltered (file
, " %6ld",
1529 regcache
->descr
->register_offset
[regnum
]);
1530 if (register_offset
!= regcache
->descr
->register_offset
[regnum
]
1531 || register_offset
!= REGISTER_BYTE (regnum
)
1533 && (regcache
->descr
->register_offset
[regnum
]
1534 != (regcache
->descr
->register_offset
[regnum
- 1]
1535 + regcache
->descr
->sizeof_register
[regnum
- 1])))
1538 if (!footnote_register_offset
)
1539 footnote_register_offset
= ++footnote_nr
;
1540 fprintf_unfiltered (file
, "*%d", footnote_register_offset
);
1543 fprintf_unfiltered (file
, " ");
1544 register_offset
= (regcache
->descr
->register_offset
[regnum
]
1545 + regcache
->descr
->sizeof_register
[regnum
]);
1550 fprintf_unfiltered (file
, " %5s ", "Size");
1553 fprintf_unfiltered (file
, " %5ld",
1554 regcache
->descr
->sizeof_register
[regnum
]);
1555 if ((regcache
->descr
->sizeof_register
[regnum
]
1556 != REGISTER_RAW_SIZE (regnum
))
1557 || (regcache
->descr
->sizeof_register
[regnum
]
1558 != REGISTER_VIRTUAL_SIZE (regnum
))
1559 || (regcache
->descr
->sizeof_register
[regnum
]
1560 != TYPE_LENGTH (register_type (regcache
->descr
->gdbarch
,
1564 if (!footnote_register_size
)
1565 footnote_register_size
= ++footnote_nr
;
1566 fprintf_unfiltered (file
, "*%d", footnote_register_size
);
1569 fprintf_unfiltered (file
, " ");
1574 fprintf_unfiltered (file
, " %-20s", "Type");
1577 static const char blt
[] = "builtin_type";
1578 const char *t
= TYPE_NAME (register_type (regcache
->descr
->gdbarch
,
1583 if (!footnote_register_type_name_null
)
1584 footnote_register_type_name_null
= ++footnote_nr
;
1585 xasprintf (&n
, "*%d", footnote_register_type_name_null
);
1586 make_cleanup (xfree
, n
);
1589 /* Chop a leading builtin_type. */
1590 if (strncmp (t
, blt
, strlen (blt
)) == 0)
1592 fprintf_unfiltered (file
, " %-20s", t
);
1596 if (what_to_dump
== regcache_dump_raw
)
1599 fprintf_unfiltered (file
, "Raw value");
1600 else if (regnum
>= regcache
->descr
->nr_raw_registers
)
1601 fprintf_unfiltered (file
, "<cooked>");
1602 else if (!regcache_valid_p (regcache
, regnum
))
1603 fprintf_unfiltered (file
, "<invalid>");
1606 regcache_raw_read (regcache
, regnum
, buf
);
1607 fprintf_unfiltered (file
, "0x");
1608 dump_endian_bytes (file
, TARGET_BYTE_ORDER
, buf
,
1609 REGISTER_RAW_SIZE (regnum
));
1613 /* Value, cooked. */
1614 if (what_to_dump
== regcache_dump_cooked
)
1617 fprintf_unfiltered (file
, "Cooked value");
1620 regcache_cooked_read (regcache
, regnum
, buf
);
1621 fprintf_unfiltered (file
, "0x");
1622 dump_endian_bytes (file
, TARGET_BYTE_ORDER
, buf
,
1623 REGISTER_VIRTUAL_SIZE (regnum
));
1627 fprintf_unfiltered (file
, "\n");
1630 if (footnote_register_size
)
1631 fprintf_unfiltered (file
, "*%d: Inconsistent register sizes.\n",
1632 footnote_register_size
);
1633 if (footnote_register_offset
)
1634 fprintf_unfiltered (file
, "*%d: Inconsistent register offsets.\n",
1635 footnote_register_offset
);
1636 if (footnote_register_type_name_null
)
1637 fprintf_unfiltered (file
,
1638 "*%d: Register type's name NULL.\n",
1639 footnote_register_type_name_null
);
1640 do_cleanups (cleanups
);
1644 regcache_print (char *args
, enum regcache_dump_what what_to_dump
)
1647 regcache_dump (current_regcache
, gdb_stdout
, what_to_dump
);
1650 struct ui_file
*file
= gdb_fopen (args
, "w");
1652 perror_with_name ("maintenance print architecture");
1653 regcache_dump (current_regcache
, file
, what_to_dump
);
1654 ui_file_delete (file
);
1659 maintenance_print_registers (char *args
, int from_tty
)
1661 regcache_print (args
, regcache_dump_none
);
1665 maintenance_print_raw_registers (char *args
, int from_tty
)
1667 regcache_print (args
, regcache_dump_raw
);
1671 maintenance_print_cooked_registers (char *args
, int from_tty
)
1673 regcache_print (args
, regcache_dump_cooked
);
1677 _initialize_regcache (void)
1679 regcache_descr_handle
= register_gdbarch_data (init_regcache_descr
,
1680 xfree_regcache_descr
);
1681 REGISTER_GDBARCH_SWAP (current_regcache
);
1682 register_gdbarch_swap (®isters
, sizeof (registers
), NULL
);
1683 register_gdbarch_swap (®ister_valid
, sizeof (register_valid
), NULL
);
1684 register_gdbarch_swap (NULL
, 0, build_regcache
);
1686 add_com ("flushregs", class_maintenance
, reg_flush_command
,
1687 "Force gdb to flush its register cache (maintainer command)");
1689 /* Initialize the thread/process associated with the current set of
1690 registers. For now, -1 is special, and means `no current process'. */
1691 registers_ptid
= pid_to_ptid (-1);
1693 add_cmd ("registers", class_maintenance
,
1694 maintenance_print_registers
,
1695 "Print the internal register configuration.\
1696 Takes an optional file parameter.",
1697 &maintenanceprintlist
);
1698 add_cmd ("raw-registers", class_maintenance
,
1699 maintenance_print_raw_registers
,
1700 "Print the internal register configuration including raw values.\
1701 Takes an optional file parameter.",
1702 &maintenanceprintlist
);
1703 add_cmd ("cooked-registers", class_maintenance
,
1704 maintenance_print_cooked_registers
,
1705 "Print the internal register configuration including cooked values.\
1706 Takes an optional file parameter.",
1707 &maintenanceprintlist
);