Commit | Line | Data |
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c906108c | 1 | /* Definitions for values of C expressions, for GDB. |
dea7f9ba | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7b6bb8da | 5 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #if !defined (VALUE_H) | |
23 | #define VALUE_H 1 | |
24 | ||
dea7f9ba | 25 | #include "doublest.h" |
1df6926e | 26 | #include "frame.h" /* For struct frame_id. */ |
dea7f9ba MK |
27 | |
28 | struct block; | |
da3331ec | 29 | struct expression; |
dea7f9ba | 30 | struct regcache; |
da3331ec AC |
31 | struct symbol; |
32 | struct type; | |
dea7f9ba | 33 | struct ui_file; |
d8ca156b | 34 | struct language_defn; |
79a45b7d | 35 | struct value_print_options; |
d16aafd8 | 36 | |
dea7f9ba MK |
37 | /* The structure which defines the type of a value. It should never |
38 | be possible for a program lval value to survive over a call to the | |
39 | inferior (i.e. to be put into the history list or an internal | |
40 | variable). */ | |
c906108c | 41 | |
91294c83 | 42 | struct value; |
c906108c | 43 | |
17cf0ecd | 44 | /* Values are stored in a chain, so that they can be deleted easily |
a08702d6 TJB |
45 | over calls to the inferior. Values assigned to internal variables, |
46 | put into the value history or exposed to Python are taken off this | |
47 | list. */ | |
91294c83 | 48 | |
17cf0ecd AC |
49 | struct value *value_next (struct value *); |
50 | ||
91294c83 AC |
51 | /* Type of the value. */ |
52 | ||
0e03807e | 53 | extern struct type *value_type (const struct value *); |
91294c83 | 54 | |
04624583 AC |
55 | /* This is being used to change the type of an existing value, that |
56 | code should instead be creating a new value with the changed type | |
57 | (but possibly shared content). */ | |
91294c83 | 58 | |
04624583 AC |
59 | extern void deprecated_set_value_type (struct value *value, |
60 | struct type *type); | |
91294c83 AC |
61 | |
62 | /* Only used for bitfields; number of bits contained in them. */ | |
63 | ||
0e03807e | 64 | extern int value_bitsize (const struct value *); |
9bbda503 | 65 | extern void set_value_bitsize (struct value *, int bit); |
91294c83 AC |
66 | |
67 | /* Only used for bitfields; position of start of field. For | |
32c9a795 MD |
68 | gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For |
69 | gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */ | |
91294c83 | 70 | |
0e03807e | 71 | extern int value_bitpos (const struct value *); |
9bbda503 | 72 | extern void set_value_bitpos (struct value *, int bit); |
f5cf64a7 | 73 | |
4ea48cc1 DJ |
74 | /* Only used for bitfields; the containing value. This allows a |
75 | single read from the target when displaying multiple | |
76 | bitfields. */ | |
77 | ||
78 | struct value *value_parent (struct value *); | |
79 | ||
91294c83 AC |
80 | /* Describes offset of a value within lval of a structure in bytes. |
81 | If lval == lval_memory, this is an offset to the address. If lval | |
82 | == lval_register, this is a further offset from location.address | |
83 | within the registers structure. Note also the member | |
84 | embedded_offset below. */ | |
85 | ||
0e03807e | 86 | extern int value_offset (const struct value *); |
f5cf64a7 | 87 | extern void set_value_offset (struct value *, int offset); |
df407dfe | 88 | |
88e3b34b AC |
89 | /* The comment from "struct value" reads: ``Is it modifiable? Only |
90 | relevant if lval != not_lval.''. Shouldn't the value instead be | |
91 | not_lval and be done with it? */ | |
91294c83 | 92 | |
88e3b34b AC |
93 | extern int deprecated_value_modifiable (struct value *value); |
94 | extern void deprecated_set_value_modifiable (struct value *value, | |
95 | int modifiable); | |
96 | ||
91294c83 AC |
97 | /* If a value represents a C++ object, then the `type' field gives the |
98 | object's compile-time type. If the object actually belongs to some | |
99 | class derived from `type', perhaps with other base classes and | |
100 | additional members, then `type' is just a subobject of the real | |
101 | thing, and the full object is probably larger than `type' would | |
102 | suggest. | |
103 | ||
104 | If `type' is a dynamic class (i.e. one with a vtable), then GDB can | |
105 | actually determine the object's run-time type by looking at the | |
106 | run-time type information in the vtable. When this information is | |
107 | available, we may elect to read in the entire object, for several | |
108 | reasons: | |
109 | ||
110 | - When printing the value, the user would probably rather see the | |
111 | full object, not just the limited portion apparent from the | |
112 | compile-time type. | |
113 | ||
114 | - If `type' has virtual base classes, then even printing `type' | |
115 | alone may require reaching outside the `type' portion of the | |
116 | object to wherever the virtual base class has been stored. | |
117 | ||
118 | When we store the entire object, `enclosing_type' is the run-time | |
119 | type -- the complete object -- and `embedded_offset' is the offset | |
120 | of `type' within that larger type, in bytes. The value_contents() | |
121 | macro takes `embedded_offset' into account, so most GDB code | |
122 | continues to see the `type' portion of the value, just as the | |
123 | inferior would. | |
124 | ||
125 | If `type' is a pointer to an object, then `enclosing_type' is a | |
126 | pointer to the object's run-time type, and `pointed_to_offset' is | |
127 | the offset in bytes from the full object to the pointed-to object | |
128 | -- that is, the value `embedded_offset' would have if we followed | |
129 | the pointer and fetched the complete object. (I don't really see | |
130 | the point. Why not just determine the run-time type when you | |
131 | indirect, and avoid the special case? The contents don't matter | |
132 | until you indirect anyway.) | |
133 | ||
134 | If we're not doing anything fancy, `enclosing_type' is equal to | |
135 | `type', and `embedded_offset' is zero, so everything works | |
136 | normally. */ | |
137 | ||
4754a64e | 138 | extern struct type *value_enclosing_type (struct value *); |
4dfea560 DE |
139 | extern void set_value_enclosing_type (struct value *val, |
140 | struct type *new_type); | |
141 | ||
91294c83 AC |
142 | extern int value_pointed_to_offset (struct value *value); |
143 | extern void set_value_pointed_to_offset (struct value *value, int val); | |
144 | extern int value_embedded_offset (struct value *value); | |
145 | extern void set_value_embedded_offset (struct value *value, int val); | |
146 | ||
5f5233d4 PA |
147 | /* For lval_computed values, this structure holds functions used to |
148 | retrieve and set the value (or portions of the value). | |
149 | ||
150 | For each function, 'V' is the 'this' pointer: an lval_funcs | |
151 | function F may always assume that the V it receives is an | |
152 | lval_computed value, and has F in the appropriate slot of its | |
153 | lval_funcs structure. */ | |
154 | ||
155 | struct lval_funcs | |
156 | { | |
157 | /* Fill in VALUE's contents. This is used to "un-lazy" values. If | |
158 | a problem arises in obtaining VALUE's bits, this function should | |
159 | call 'error'. */ | |
160 | void (*read) (struct value *v); | |
161 | ||
162 | /* Handle an assignment TOVAL = FROMVAL by writing the value of | |
163 | FROMVAL to TOVAL's location. The contents of TOVAL have not yet | |
164 | been updated. If a problem arises in doing so, this function | |
165 | should call 'error'. */ | |
166 | void (*write) (struct value *toval, struct value *fromval); | |
167 | ||
0e03807e TT |
168 | /* Check the validity of some bits in VALUE. This should return 1 |
169 | if all the bits starting at OFFSET and extending for LENGTH bits | |
170 | are valid, or 0 if any bit is invalid. */ | |
171 | int (*check_validity) (const struct value *value, int offset, int length); | |
172 | ||
173 | /* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */ | |
b65c7efe | 174 | int (*check_any_valid) (const struct value *value); |
0e03807e | 175 | |
8cf6f0b1 TT |
176 | /* If non-NULL, this is used to implement pointer indirection for |
177 | this value. This method may return NULL, in which case value_ind | |
178 | will fall back to ordinary indirection. */ | |
179 | struct value *(*indirect) (struct value *value); | |
180 | ||
181 | /* If non-NULL, this is used to determine whether the indicated bits | |
182 | of VALUE are a synthetic pointer. */ | |
183 | int (*check_synthetic_pointer) (const struct value *value, | |
184 | int offset, int length); | |
185 | ||
5f5233d4 PA |
186 | /* Return a duplicate of VALUE's closure, for use in a new value. |
187 | This may simply return the same closure, if VALUE's is | |
188 | reference-counted or statically allocated. | |
189 | ||
190 | This may be NULL, in which case VALUE's closure is re-used in the | |
191 | new value. */ | |
0e03807e | 192 | void *(*copy_closure) (const struct value *v); |
5f5233d4 PA |
193 | |
194 | /* Drop VALUE's reference to its closure. Maybe this frees the | |
195 | closure; maybe this decrements a reference count; maybe the | |
196 | closure is statically allocated and this does nothing. | |
197 | ||
198 | This may be NULL, in which case no action is taken to free | |
199 | VALUE's closure. */ | |
200 | void (*free_closure) (struct value *v); | |
201 | }; | |
202 | ||
203 | /* Create a computed lvalue, with type TYPE, function pointers FUNCS, | |
204 | and closure CLOSURE. */ | |
205 | ||
206 | extern struct value *allocate_computed_value (struct type *type, | |
207 | struct lval_funcs *funcs, | |
208 | void *closure); | |
209 | ||
a7035dbb JK |
210 | extern struct value *allocate_optimized_out_value (struct type *type); |
211 | ||
5f5233d4 PA |
212 | /* If VALUE is lval_computed, return its lval_funcs structure. */ |
213 | ||
214 | extern struct lval_funcs *value_computed_funcs (struct value *value); | |
215 | ||
216 | /* If VALUE is lval_computed, return its closure. The meaning of the | |
217 | returned value depends on the functions VALUE uses. */ | |
218 | ||
0e03807e | 219 | extern void *value_computed_closure (const struct value *value); |
5f5233d4 | 220 | |
91294c83 | 221 | /* If zero, contents of this value are in the contents field. If |
9214ee5f DJ |
222 | nonzero, contents are in inferior. If the lval field is lval_memory, |
223 | the contents are in inferior memory at location.address plus offset. | |
224 | The lval field may also be lval_register. | |
91294c83 AC |
225 | |
226 | WARNING: This field is used by the code which handles watchpoints | |
227 | (see breakpoint.c) to decide whether a particular value can be | |
228 | watched by hardware watchpoints. If the lazy flag is set for some | |
229 | member of a value chain, it is assumed that this member of the | |
230 | chain doesn't need to be watched as part of watching the value | |
231 | itself. This is how GDB avoids watching the entire struct or array | |
232 | when the user wants to watch a single struct member or array | |
233 | element. If you ever change the way lazy flag is set and reset, be | |
234 | sure to consider this use as well! */ | |
235 | ||
d69fe07e | 236 | extern int value_lazy (struct value *); |
dfa52d88 | 237 | extern void set_value_lazy (struct value *value, int val); |
dea7f9ba | 238 | |
4e5d721f DE |
239 | extern int value_stack (struct value *); |
240 | extern void set_value_stack (struct value *value, int val); | |
241 | ||
0fd88904 AC |
242 | /* value_contents() and value_contents_raw() both return the address |
243 | of the gdb buffer used to hold a copy of the contents of the lval. | |
244 | value_contents() is used when the contents of the buffer are needed | |
dea7f9ba | 245 | -- it uses value_fetch_lazy() to load the buffer from the process |
0fd88904 AC |
246 | being debugged if it hasn't already been loaded |
247 | (value_contents_writeable() is used when a writeable but fetched | |
248 | buffer is required).. value_contents_raw() is used when data is | |
249 | being stored into the buffer, or when it is certain that the | |
250 | contents of the buffer are valid. | |
dea7f9ba | 251 | |
c906108c SS |
252 | Note: The contents pointer is adjusted by the offset required to |
253 | get to the real subobject, if the value happens to represent | |
dea7f9ba | 254 | something embedded in a larger run-time object. */ |
c906108c | 255 | |
fc1a4b47 | 256 | extern gdb_byte *value_contents_raw (struct value *); |
91294c83 AC |
257 | |
258 | /* Actual contents of the value. For use of this value; setting it | |
259 | uses the stuff above. Not valid if lazy is nonzero. Target | |
260 | byte-order. We force it to be aligned properly for any possible | |
261 | value. Note that a value therefore extends beyond what is | |
262 | declared here. */ | |
263 | ||
fc1a4b47 AC |
264 | extern const gdb_byte *value_contents (struct value *); |
265 | extern gdb_byte *value_contents_writeable (struct value *); | |
c906108c SS |
266 | |
267 | /* The ALL variants of the above two macros do not adjust the returned | |
dea7f9ba | 268 | pointer by the embedded_offset value. */ |
c5aa993b | 269 | |
fc1a4b47 AC |
270 | extern gdb_byte *value_contents_all_raw (struct value *); |
271 | extern const gdb_byte *value_contents_all (struct value *); | |
c5aa993b | 272 | |
0e03807e TT |
273 | /* Like value_contents_all, but does not require that the returned |
274 | bits be valid. This should only be used in situations where you | |
275 | plan to check the validity manually. */ | |
276 | extern const gdb_byte *value_contents_for_printing (struct value *value); | |
277 | ||
de4127a3 PA |
278 | /* Like value_contents_for_printing, but accepts a constant value |
279 | pointer. Unlike value_contents_for_printing however, the pointed | |
280 | value must _not_ be lazy. */ | |
281 | extern const gdb_byte * | |
282 | value_contents_for_printing_const (const struct value *value); | |
283 | ||
f23631e4 | 284 | extern int value_fetch_lazy (struct value *val); |
a6c442d8 | 285 | extern int value_contents_equal (struct value *val1, struct value *val2); |
c906108c | 286 | |
91294c83 AC |
287 | /* If nonzero, this is the value of a variable which does not actually |
288 | exist in the program. */ | |
feb13ab0 AC |
289 | extern int value_optimized_out (struct value *value); |
290 | extern void set_value_optimized_out (struct value *value, int val); | |
c906108c | 291 | |
0e03807e TT |
292 | /* Like value_optimized_out, but return false if any bit in the object |
293 | is valid. */ | |
294 | extern int value_entirely_optimized_out (const struct value *value); | |
295 | ||
f372da99 | 296 | /* Set or return field indicating whether a variable is initialized or |
581e13c1 | 297 | not, based on debugging information supplied by the compiler. |
f372da99 CT |
298 | 1 = initialized; 0 = uninitialized. */ |
299 | extern int value_initialized (struct value *); | |
300 | extern void set_value_initialized (struct value *, int); | |
301 | ||
74bcbdf3 PA |
302 | /* Set COMPONENT's location as appropriate for a component of WHOLE |
303 | --- regardless of what kind of lvalue WHOLE is. */ | |
304 | extern void set_value_component_location (struct value *component, | |
0e03807e | 305 | const struct value *whole); |
74bcbdf3 | 306 | |
13bb5560 AC |
307 | /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a |
308 | single value might have multiple LVALs), this hacked interface is | |
309 | limited to just the first PIECE. Expect further change. */ | |
91294c83 AC |
310 | /* Type of value; either not an lval, or one of the various different |
311 | possible kinds of lval. */ | |
13bb5560 AC |
312 | extern enum lval_type *deprecated_value_lval_hack (struct value *); |
313 | #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val)) | |
91294c83 | 314 | |
42ae5230 TT |
315 | /* If lval == lval_memory, return the address in the inferior. If |
316 | lval == lval_register, return the byte offset into the registers | |
317 | structure. Otherwise, return 0. The returned address | |
318 | includes the offset, if any. */ | |
de4127a3 | 319 | extern CORE_ADDR value_address (const struct value *); |
42ae5230 TT |
320 | |
321 | /* Like value_address, except the result does not include value's | |
322 | offset. */ | |
323 | extern CORE_ADDR value_raw_address (struct value *); | |
324 | ||
325 | /* Set the address of a value. */ | |
326 | extern void set_value_address (struct value *, CORE_ADDR); | |
91294c83 AC |
327 | |
328 | /* Pointer to internal variable. */ | |
13bb5560 AC |
329 | extern struct internalvar **deprecated_value_internalvar_hack (struct value *); |
330 | #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val)) | |
91294c83 AC |
331 | |
332 | /* Frame register value is relative to. This will be described in the | |
333 | lval enum above as "lval_register". */ | |
13bb5560 AC |
334 | extern struct frame_id *deprecated_value_frame_id_hack (struct value *); |
335 | #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val)) | |
91294c83 AC |
336 | |
337 | /* Register number if the value is from a register. */ | |
13bb5560 AC |
338 | extern short *deprecated_value_regnum_hack (struct value *); |
339 | #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val)) | |
340 | ||
dea7f9ba | 341 | /* Convert a REF to the object referenced. */ |
c906108c | 342 | |
994b9211 | 343 | extern struct value *coerce_ref (struct value *value); |
c906108c SS |
344 | |
345 | /* If ARG is an array, convert it to a pointer. | |
c906108c SS |
346 | If ARG is a function, convert it to a function pointer. |
347 | ||
348 | References are dereferenced. */ | |
349 | ||
994b9211 | 350 | extern struct value *coerce_array (struct value *value); |
c906108c | 351 | |
0e03807e TT |
352 | /* Given a value, determine whether the bits starting at OFFSET and |
353 | extending for LENGTH bits are valid. This returns nonzero if all | |
354 | bits in the given range are valid, zero if any bit is invalid. */ | |
355 | ||
356 | extern int value_bits_valid (const struct value *value, | |
357 | int offset, int length); | |
358 | ||
8cf6f0b1 TT |
359 | /* Given a value, determine whether the bits starting at OFFSET and |
360 | extending for LENGTH bits are a synthetic pointer. */ | |
361 | ||
362 | extern int value_bits_synthetic_pointer (const struct value *value, | |
363 | int offset, int length); | |
364 | ||
4e07d55f PA |
365 | /* Given a value, determine whether the contents bytes starting at |
366 | OFFSET and extending for LENGTH bytes are available. This returns | |
367 | nonzero if all bytes in the given range are available, zero if any | |
368 | byte is unavailable. */ | |
369 | ||
370 | extern int value_bytes_available (const struct value *value, | |
371 | int offset, int length); | |
372 | ||
ec0a52e1 PA |
373 | /* Like value_bytes_available, but return false if any byte in the |
374 | whole object is unavailable. */ | |
375 | extern int value_entirely_available (struct value *value); | |
376 | ||
4e07d55f PA |
377 | /* Mark VALUE's content bytes starting at OFFSET and extending for |
378 | LENGTH bytes as unavailable. */ | |
379 | ||
380 | extern void mark_value_bytes_unavailable (struct value *value, | |
381 | int offset, int length); | |
c8c1c22f PA |
382 | |
383 | /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with | |
cd24cfaa PA |
384 | LENGTH bytes of VAL2's contents starting at OFFSET2. |
385 | ||
386 | Note that "contents" refers to the whole value's contents | |
387 | (value_contents_all), without any embedded offset adjustment. For | |
388 | example, to compare a complete object value with itself, including | |
389 | its enclosing type chunk, you'd do: | |
390 | ||
391 | int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val))); | |
392 | value_available_contents (val, 0, val, 0, len); | |
393 | ||
394 | Returns true iff the set of available contents match. Unavailable | |
395 | contents compare equal with unavailable contents, and different | |
396 | with any available byte. For example, if 'x's represent an | |
397 | unavailable byte, and 'V' and 'Z' represent different available | |
398 | bytes, in a value with length 16: | |
c8c1c22f PA |
399 | |
400 | offset: 0 4 8 12 16 | |
401 | contents: xxxxVVVVxxxxVVZZ | |
402 | ||
403 | then: | |
404 | ||
405 | value_available_contents_eq(val, 0, val, 8, 6) => 1 | |
406 | value_available_contents_eq(val, 0, val, 4, 4) => 1 | |
407 | value_available_contents_eq(val, 0, val, 8, 8) => 0 | |
408 | value_available_contents_eq(val, 4, val, 12, 2) => 1 | |
409 | value_available_contents_eq(val, 4, val, 12, 4) => 0 | |
410 | value_available_contents_eq(val, 3, val, 4, 4) => 0 | |
411 | */ | |
412 | ||
413 | extern int value_available_contents_eq (const struct value *val1, int offset1, | |
414 | const struct value *val2, int offset2, | |
415 | int length); | |
4e07d55f | 416 | |
e6ca34fc PA |
417 | /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which |
418 | is (or will be copied to) VAL's contents buffer offset by | |
419 | EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]). | |
420 | Marks value contents ranges as unavailable if the corresponding | |
421 | memory is likewise unavailable. STACK indicates whether the memory | |
422 | is known to be stack memory. */ | |
423 | ||
424447ee | 424 | extern void read_value_memory (struct value *val, int embedded_offset, |
e6ca34fc PA |
425 | int stack, CORE_ADDR memaddr, |
426 | gdb_byte *buffer, size_t length); | |
427 | ||
c906108c | 428 | \f |
c5aa993b | 429 | |
c906108c SS |
430 | #include "symtab.h" |
431 | #include "gdbtypes.h" | |
432 | #include "expression.h" | |
433 | ||
c906108c SS |
434 | struct frame_info; |
435 | struct fn_field; | |
c906108c | 436 | |
5af949e3 UW |
437 | extern void print_address_demangle (struct gdbarch *, CORE_ADDR, |
438 | struct ui_file *, int); | |
c906108c | 439 | |
f23631e4 | 440 | extern LONGEST value_as_long (struct value *val); |
f23631e4 | 441 | extern DOUBLEST value_as_double (struct value *val); |
f23631e4 | 442 | extern CORE_ADDR value_as_address (struct value *val); |
c906108c | 443 | |
fc1a4b47 AC |
444 | extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr); |
445 | extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr, | |
66140c26 | 446 | int *invp); |
fc1a4b47 | 447 | extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr); |
5467c6c8 PA |
448 | |
449 | extern int unpack_value_bits_as_long (struct type *field_type, | |
450 | const gdb_byte *valaddr, | |
451 | int embedded_offset, int bitpos, | |
452 | int bitsize, | |
453 | const struct value *original_value, | |
454 | LONGEST *result); | |
455 | ||
8929e59d | 456 | extern LONGEST unpack_field_as_long (struct type *type, |
fc1a4b47 | 457 | const gdb_byte *valaddr, |
a14ed312 | 458 | int fieldno); |
5467c6c8 PA |
459 | extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr, |
460 | int embedded_offset, int fieldno, | |
461 | const struct value *val, LONGEST *result); | |
462 | ||
463 | extern struct value *value_field_bitfield (struct type *type, int fieldno, | |
464 | const gdb_byte *valaddr, | |
465 | int embedded_offset, | |
466 | const struct value *val); | |
c906108c | 467 | |
14d06750 DJ |
468 | extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num); |
469 | ||
f23631e4 | 470 | extern struct value *value_from_longest (struct type *type, LONGEST num); |
595939de | 471 | extern struct value *value_from_ulongest (struct type *type, ULONGEST num); |
f23631e4 | 472 | extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr); |
f23631e4 | 473 | extern struct value *value_from_double (struct type *type, DOUBLEST num); |
4ef30785 TJB |
474 | extern struct value *value_from_decfloat (struct type *type, |
475 | const gdb_byte *decbytes); | |
3bd0f5ef | 476 | extern struct value *value_from_history_ref (char *, char **); |
0f71a2f6 | 477 | |
00a4c844 AC |
478 | extern struct value *value_at (struct type *type, CORE_ADDR addr); |
479 | extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr); | |
c906108c | 480 | |
8acb6b92 TT |
481 | extern struct value *value_from_contents_and_address (struct type *, |
482 | const gdb_byte *, | |
483 | CORE_ADDR); | |
8a9b8146 | 484 | extern struct value *value_from_contents (struct type *, const gdb_byte *); |
8acb6b92 | 485 | |
9acbedc0 UW |
486 | extern struct value *default_value_from_register (struct type *type, |
487 | int regnum, | |
488 | struct frame_info *frame); | |
489 | ||
f23631e4 AC |
490 | extern struct value *value_from_register (struct type *type, int regnum, |
491 | struct frame_info *frame); | |
c906108c | 492 | |
0b2b0195 UW |
493 | extern CORE_ADDR address_from_register (struct type *type, int regnum, |
494 | struct frame_info *frame); | |
495 | ||
f23631e4 | 496 | extern struct value *value_of_variable (struct symbol *var, struct block *b); |
c906108c | 497 | |
61212c0f UW |
498 | extern struct value *address_of_variable (struct symbol *var, struct block *b); |
499 | ||
89f5065b | 500 | extern struct value *value_of_register (int regnum, struct frame_info *frame); |
c906108c | 501 | |
9214ee5f DJ |
502 | struct value *value_of_register_lazy (struct frame_info *frame, int regnum); |
503 | ||
a14ed312 | 504 | extern int symbol_read_needs_frame (struct symbol *); |
c906108c | 505 | |
f23631e4 AC |
506 | extern struct value *read_var_value (struct symbol *var, |
507 | struct frame_info *frame); | |
c906108c | 508 | |
f23631e4 | 509 | extern struct value *allocate_value (struct type *type); |
3e3d7139 JG |
510 | extern struct value *allocate_value_lazy (struct type *type); |
511 | extern void allocate_value_contents (struct value *value); | |
39d37385 PA |
512 | extern void value_contents_copy (struct value *dst, int dst_offset, |
513 | struct value *src, int src_offset, | |
514 | int length); | |
515 | extern void value_contents_copy_raw (struct value *dst, int dst_offset, | |
516 | struct value *src, int src_offset, | |
517 | int length); | |
c906108c | 518 | |
f23631e4 | 519 | extern struct value *allocate_repeat_value (struct type *type, int count); |
c906108c | 520 | |
f23631e4 | 521 | extern struct value *value_mark (void); |
c906108c | 522 | |
f23631e4 | 523 | extern void value_free_to_mark (struct value *mark); |
c906108c | 524 | |
3b7538c0 UW |
525 | extern struct value *value_cstring (char *ptr, int len, |
526 | struct type *char_type); | |
527 | extern struct value *value_string (char *ptr, int len, | |
528 | struct type *char_type); | |
22601c15 UW |
529 | extern struct value *value_bitstring (char *ptr, int len, |
530 | struct type *index_type); | |
c906108c | 531 | |
f23631e4 | 532 | extern struct value *value_array (int lowbound, int highbound, |
89f5065b | 533 | struct value **elemvec); |
c906108c | 534 | |
f23631e4 | 535 | extern struct value *value_concat (struct value *arg1, struct value *arg2); |
c906108c | 536 | |
f23631e4 AC |
537 | extern struct value *value_binop (struct value *arg1, struct value *arg2, |
538 | enum exp_opcode op); | |
c906108c | 539 | |
2497b498 | 540 | extern struct value *value_ptradd (struct value *arg1, LONGEST arg2); |
89eef114 UW |
541 | |
542 | extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2); | |
c906108c | 543 | |
63092375 DJ |
544 | extern int value_must_coerce_to_target (struct value *arg1); |
545 | ||
546 | extern struct value *value_coerce_to_target (struct value *arg1); | |
547 | ||
f23631e4 | 548 | extern struct value *value_coerce_array (struct value *arg1); |
c906108c | 549 | |
f23631e4 | 550 | extern struct value *value_coerce_function (struct value *arg1); |
c906108c | 551 | |
f23631e4 | 552 | extern struct value *value_ind (struct value *arg1); |
c906108c | 553 | |
f23631e4 | 554 | extern struct value *value_addr (struct value *arg1); |
c906108c | 555 | |
fb933624 DJ |
556 | extern struct value *value_ref (struct value *arg1); |
557 | ||
89f5065b AC |
558 | extern struct value *value_assign (struct value *toval, |
559 | struct value *fromval); | |
c906108c | 560 | |
36e9969c NS |
561 | extern struct value *value_pos (struct value *arg1); |
562 | ||
f23631e4 | 563 | extern struct value *value_neg (struct value *arg1); |
c906108c | 564 | |
f23631e4 | 565 | extern struct value *value_complement (struct value *arg1); |
c906108c | 566 | |
f23631e4 AC |
567 | extern struct value *value_struct_elt (struct value **argp, |
568 | struct value **args, | |
714f19d5 TT |
569 | const char *name, int *static_memfuncp, |
570 | const char *err); | |
c906108c | 571 | |
79c2c32d | 572 | extern struct value *value_aggregate_elt (struct type *curtype, |
0d5de010 | 573 | char *name, |
072bba3b | 574 | struct type *expect_type, |
0d5de010 DJ |
575 | int want_address, |
576 | enum noside noside); | |
c906108c | 577 | |
f23631e4 | 578 | extern struct value *value_static_field (struct type *type, int fieldno); |
c906108c | 579 | |
714f19d5 TT |
580 | extern struct fn_field *value_find_oload_method_list (struct value **, |
581 | const char *, | |
4a1970e4 | 582 | int, int *, |
a14ed312 | 583 | struct type **, int *); |
7a292a7a | 584 | |
4c3376c8 SW |
585 | enum oload_search_type { NON_METHOD, METHOD, BOTH }; |
586 | ||
a14ed312 | 587 | extern int find_overload_match (struct type **arg_types, int nargs, |
4c3376c8 SW |
588 | const char *name, |
589 | enum oload_search_type method, int lax, | |
7f8c9282 | 590 | struct value **objp, struct symbol *fsym, |
f23631e4 | 591 | struct value **valp, struct symbol **symp, |
7322dca9 | 592 | int *staticp, const int no_adl); |
c906108c | 593 | |
f23631e4 | 594 | extern struct value *value_field (struct value *arg1, int fieldno); |
c906108c | 595 | |
f23631e4 AC |
596 | extern struct value *value_primitive_field (struct value *arg1, int offset, |
597 | int fieldno, | |
598 | struct type *arg_type); | |
c906108c | 599 | |
c906108c | 600 | |
f23631e4 AC |
601 | extern struct type *value_rtti_target_type (struct value *, int *, int *, |
602 | int *); | |
c906108c | 603 | |
f23631e4 AC |
604 | extern struct value *value_full_object (struct value *, struct type *, int, |
605 | int, int); | |
c906108c | 606 | |
fb933624 DJ |
607 | extern struct value *value_cast_pointers (struct type *, struct value *); |
608 | ||
f23631e4 | 609 | extern struct value *value_cast (struct type *type, struct value *arg2); |
c906108c | 610 | |
4e8f195d TT |
611 | extern struct value *value_reinterpret_cast (struct type *type, |
612 | struct value *arg); | |
613 | ||
614 | extern struct value *value_dynamic_cast (struct type *type, struct value *arg); | |
615 | ||
f23631e4 | 616 | extern struct value *value_zero (struct type *type, enum lval_type lv); |
c906108c | 617 | |
301f0ecf DE |
618 | extern struct value *value_one (struct type *type, enum lval_type lv); |
619 | ||
f23631e4 | 620 | extern struct value *value_repeat (struct value *arg1, int count); |
c906108c | 621 | |
2497b498 | 622 | extern struct value *value_subscript (struct value *array, LONGEST index); |
c906108c | 623 | |
afc05acb UW |
624 | extern struct value *value_bitstring_subscript (struct type *type, |
625 | struct value *bitstring, | |
2497b498 | 626 | LONGEST index); |
afc05acb | 627 | |
5fe830e4 AC |
628 | extern struct value *register_value_being_returned (struct type *valtype, |
629 | struct regcache *retbuf); | |
c906108c | 630 | |
fbb06eb1 | 631 | extern int value_in (struct value *element, struct value *set); |
c906108c | 632 | |
fc1a4b47 | 633 | extern int value_bit_index (struct type *type, const gdb_byte *addr, |
c84141d6 | 634 | int index); |
c906108c | 635 | |
d80b854b UW |
636 | extern int using_struct_return (struct gdbarch *gdbarch, |
637 | struct type *func_type, | |
c055b101 | 638 | struct type *value_type); |
c906108c | 639 | |
f23631e4 | 640 | extern struct value *evaluate_expression (struct expression *exp); |
c906108c | 641 | |
f23631e4 | 642 | extern struct value *evaluate_type (struct expression *exp); |
c906108c | 643 | |
4b27a620 JB |
644 | extern struct value *evaluate_subexp (struct type *expect_type, |
645 | struct expression *exp, | |
646 | int *pos, enum noside noside); | |
647 | ||
65d12d83 TT |
648 | extern struct value *evaluate_subexpression_type (struct expression *exp, |
649 | int subexp); | |
650 | ||
0cf6dd15 TJB |
651 | extern void fetch_subexp_value (struct expression *exp, int *pc, |
652 | struct value **valp, struct value **resultp, | |
653 | struct value **val_chain); | |
654 | ||
65d12d83 TT |
655 | extern char *extract_field_op (struct expression *exp, int *subexp); |
656 | ||
f23631e4 AC |
657 | extern struct value *evaluate_subexp_with_coercion (struct expression *, |
658 | int *, enum noside); | |
c906108c | 659 | |
f23631e4 | 660 | extern struct value *parse_and_eval (char *exp); |
c906108c | 661 | |
f23631e4 | 662 | extern struct value *parse_to_comma_and_eval (char **expp); |
c906108c | 663 | |
a14ed312 | 664 | extern struct type *parse_and_eval_type (char *p, int length); |
c906108c | 665 | |
a14ed312 | 666 | extern CORE_ADDR parse_and_eval_address (char *exp); |
c906108c | 667 | |
bb518678 DT |
668 | extern LONGEST parse_and_eval_long (char *exp); |
669 | ||
4066e646 UW |
670 | extern void unop_promote (const struct language_defn *language, |
671 | struct gdbarch *gdbarch, | |
672 | struct value **arg1); | |
673 | ||
674 | extern void binop_promote (const struct language_defn *language, | |
675 | struct gdbarch *gdbarch, | |
676 | struct value **arg1, struct value **arg2); | |
677 | ||
f23631e4 | 678 | extern struct value *access_value_history (int num); |
c906108c | 679 | |
78267919 UW |
680 | extern struct value *value_of_internalvar (struct gdbarch *gdbarch, |
681 | struct internalvar *var); | |
c906108c | 682 | |
4fa62494 UW |
683 | extern int get_internalvar_integer (struct internalvar *var, LONGEST *l); |
684 | ||
f23631e4 | 685 | extern void set_internalvar (struct internalvar *var, struct value *val); |
c906108c | 686 | |
4fa62494 UW |
687 | extern void set_internalvar_integer (struct internalvar *var, LONGEST l); |
688 | ||
78267919 UW |
689 | extern void set_internalvar_string (struct internalvar *var, |
690 | const char *string); | |
691 | ||
4fa62494 UW |
692 | extern void clear_internalvar (struct internalvar *var); |
693 | ||
a14ed312 KB |
694 | extern void set_internalvar_component (struct internalvar *var, |
695 | int offset, | |
696 | int bitpos, int bitsize, | |
f23631e4 | 697 | struct value *newvalue); |
c906108c | 698 | |
bc3b79fd | 699 | extern struct internalvar *lookup_only_internalvar (const char *name); |
c4a3d09a | 700 | |
bc3b79fd | 701 | extern struct internalvar *create_internalvar (const char *name); |
c4a3d09a | 702 | |
78267919 UW |
703 | typedef struct value * (*internalvar_make_value) (struct gdbarch *, |
704 | struct internalvar *); | |
4aa995e1 PA |
705 | extern struct internalvar * |
706 | create_internalvar_type_lazy (char *name, internalvar_make_value fun); | |
707 | ||
bc3b79fd | 708 | extern struct internalvar *lookup_internalvar (const char *name); |
c906108c | 709 | |
f23631e4 | 710 | extern int value_equal (struct value *arg1, struct value *arg2); |
c906108c | 711 | |
218d2fc6 TJB |
712 | extern int value_equal_contents (struct value *arg1, struct value *arg2); |
713 | ||
f23631e4 | 714 | extern int value_less (struct value *arg1, struct value *arg2); |
c906108c | 715 | |
f23631e4 | 716 | extern int value_logical_not (struct value *arg1); |
c906108c SS |
717 | |
718 | /* C++ */ | |
719 | ||
7518bff5 TT |
720 | extern struct value *value_of_this (const struct language_defn *lang, |
721 | int complain); | |
c906108c | 722 | |
f23631e4 AC |
723 | extern struct value *value_x_binop (struct value *arg1, struct value *arg2, |
724 | enum exp_opcode op, | |
725 | enum exp_opcode otherop, | |
726 | enum noside noside); | |
c906108c | 727 | |
f23631e4 AC |
728 | extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op, |
729 | enum noside noside); | |
c906108c | 730 | |
89f5065b | 731 | extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f, |
f23631e4 | 732 | int j, struct type *type, int offset); |
c906108c | 733 | |
be636754 PA |
734 | extern int binop_types_user_defined_p (enum exp_opcode op, |
735 | struct type *type1, | |
736 | struct type *type2); | |
737 | ||
f23631e4 AC |
738 | extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1, |
739 | struct value *arg2); | |
c906108c | 740 | |
f23631e4 | 741 | extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1); |
c906108c | 742 | |
d8228535 | 743 | extern int destructor_name_p (const char *name, struct type *type); |
c906108c | 744 | |
828d3400 DJ |
745 | extern void value_incref (struct value *val); |
746 | ||
3e3d7139 | 747 | extern void value_free (struct value *val); |
c906108c | 748 | |
a14ed312 | 749 | extern void free_all_values (void); |
c906108c | 750 | |
0cf6dd15 TJB |
751 | extern void free_value_chain (struct value *v); |
752 | ||
f23631e4 | 753 | extern void release_value (struct value *val); |
c906108c | 754 | |
f23631e4 | 755 | extern int record_latest_value (struct value *val); |
c906108c | 756 | |
50810684 UW |
757 | extern void modify_field (struct type *type, gdb_byte *addr, |
758 | LONGEST fieldval, int bitpos, int bitsize); | |
c906108c | 759 | |
89f5065b AC |
760 | extern void type_print (struct type *type, char *varstring, |
761 | struct ui_file *stream, int show); | |
c906108c | 762 | |
ae6a3a4c TJB |
763 | extern char *type_to_string (struct type *type); |
764 | ||
fc1a4b47 AC |
765 | extern gdb_byte *baseclass_addr (struct type *type, int index, |
766 | gdb_byte *valaddr, | |
8929e59d | 767 | struct value **valuep, int *errp); |
c906108c | 768 | |
89f5065b | 769 | extern void print_longest (struct ui_file *stream, int format, |
d9fcf2fb | 770 | int use_local, LONGEST val); |
c906108c | 771 | |
fc1a4b47 | 772 | extern void print_floating (const gdb_byte *valaddr, struct type *type, |
89f5065b | 773 | struct ui_file *stream); |
c906108c | 774 | |
7678ef8f TJB |
775 | extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type, |
776 | struct ui_file *stream); | |
777 | ||
79a45b7d TT |
778 | extern int value_print (struct value *val, struct ui_file *stream, |
779 | const struct value_print_options *options); | |
c906108c | 780 | |
f23631e4 AC |
781 | extern void value_print_array_elements (struct value *val, |
782 | struct ui_file *stream, int format, | |
d9fcf2fb | 783 | enum val_prettyprint pretty); |
c906108c | 784 | |
f23631e4 | 785 | extern struct value *value_release_to_mark (struct value *mark); |
c906108c | 786 | |
fc1a4b47 | 787 | extern int val_print (struct type *type, const gdb_byte *valaddr, |
d9fcf2fb | 788 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 789 | struct ui_file *stream, int recurse, |
0e03807e | 790 | const struct value *val, |
79a45b7d | 791 | const struct value_print_options *options, |
d8ca156b | 792 | const struct language_defn *language); |
c906108c | 793 | |
806048c6 | 794 | extern int common_val_print (struct value *val, |
79a45b7d TT |
795 | struct ui_file *stream, int recurse, |
796 | const struct value_print_options *options, | |
d8ca156b | 797 | const struct language_defn *language); |
806048c6 | 798 | |
09ca9e2e TT |
799 | extern int val_print_string (struct type *elttype, const char *encoding, |
800 | CORE_ADDR addr, int len, | |
79a45b7d TT |
801 | struct ui_file *stream, |
802 | const struct value_print_options *options); | |
c906108c | 803 | |
aad95b57 TT |
804 | extern void print_variable_and_value (const char *name, |
805 | struct symbol *var, | |
806 | struct frame_info *frame, | |
807 | struct ui_file *stream, | |
808 | int indent); | |
c906108c | 809 | |
2b2d9e11 | 810 | extern int check_field (struct type *, const char *); |
c906108c | 811 | |
89f5065b AC |
812 | extern void typedef_print (struct type *type, struct symbol *news, |
813 | struct ui_file *stream); | |
c906108c | 814 | |
a14ed312 | 815 | extern char *internalvar_name (struct internalvar *var); |
c906108c | 816 | |
ae5a43e0 | 817 | extern void preserve_values (struct objfile *); |
c906108c SS |
818 | |
819 | /* From values.c */ | |
820 | ||
f23631e4 | 821 | extern struct value *value_copy (struct value *); |
c906108c | 822 | |
c37f7098 KW |
823 | extern struct value *value_non_lval (struct value *); |
824 | ||
4e7a5ef5 TT |
825 | extern void preserve_one_value (struct value *, struct objfile *, htab_t); |
826 | ||
c906108c SS |
827 | /* From valops.c */ |
828 | ||
f23631e4 | 829 | extern struct value *varying_to_slice (struct value *); |
c906108c | 830 | |
f23631e4 | 831 | extern struct value *value_slice (struct value *, int, int); |
c906108c | 832 | |
f23631e4 AC |
833 | extern struct value *value_literal_complex (struct value *, struct value *, |
834 | struct type *); | |
c906108c | 835 | |
3e3b026f UW |
836 | extern struct value *find_function_in_inferior (const char *, |
837 | struct objfile **); | |
c906108c | 838 | |
f23631e4 | 839 | extern struct value *value_allocate_space_in_inferior (int); |
c906108c | 840 | |
2497b498 UW |
841 | extern struct value *value_subscripted_rvalue (struct value *array, |
842 | LONGEST index, int lowerbound); | |
bc3b79fd TJB |
843 | |
844 | /* User function handler. */ | |
845 | ||
d452c4bc UW |
846 | typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch, |
847 | const struct language_defn *language, | |
848 | void *cookie, | |
bc3b79fd TJB |
849 | int argc, |
850 | struct value **argv); | |
851 | ||
852 | void add_internal_function (const char *name, const char *doc, | |
853 | internal_function_fn handler, | |
854 | void *cookie); | |
855 | ||
d452c4bc UW |
856 | struct value *call_internal_function (struct gdbarch *gdbarch, |
857 | const struct language_defn *language, | |
858 | struct value *function, | |
bc3b79fd TJB |
859 | int argc, struct value **argv); |
860 | ||
861 | char *value_internal_function_name (struct value *); | |
862 | ||
c5aa993b | 863 | #endif /* !defined (VALUE_H) */ |