Commit | Line | Data |
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c906108c | 1 | /* Definitions for values of C expressions, for GDB. |
dea7f9ba | 2 | |
c5a57081 | 3 | Copyright (C) 1986-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (VALUE_H) | |
21 | #define VALUE_H 1 | |
22 | ||
dea7f9ba | 23 | #include "doublest.h" |
1df6926e | 24 | #include "frame.h" /* For struct frame_id. */ |
dea7f9ba MK |
25 | |
26 | struct block; | |
da3331ec | 27 | struct expression; |
dea7f9ba | 28 | struct regcache; |
da3331ec AC |
29 | struct symbol; |
30 | struct type; | |
dea7f9ba | 31 | struct ui_file; |
d8ca156b | 32 | struct language_defn; |
79a45b7d | 33 | struct value_print_options; |
d16aafd8 | 34 | |
dea7f9ba MK |
35 | /* The structure which defines the type of a value. It should never |
36 | be possible for a program lval value to survive over a call to the | |
37 | inferior (i.e. to be put into the history list or an internal | |
38 | variable). */ | |
c906108c | 39 | |
91294c83 | 40 | struct value; |
c906108c | 41 | |
17cf0ecd | 42 | /* Values are stored in a chain, so that they can be deleted easily |
a08702d6 TJB |
43 | over calls to the inferior. Values assigned to internal variables, |
44 | put into the value history or exposed to Python are taken off this | |
45 | list. */ | |
91294c83 | 46 | |
17cf0ecd AC |
47 | struct value *value_next (struct value *); |
48 | ||
91294c83 AC |
49 | /* Type of the value. */ |
50 | ||
0e03807e | 51 | extern struct type *value_type (const struct value *); |
91294c83 | 52 | |
04624583 AC |
53 | /* This is being used to change the type of an existing value, that |
54 | code should instead be creating a new value with the changed type | |
55 | (but possibly shared content). */ | |
91294c83 | 56 | |
04624583 AC |
57 | extern void deprecated_set_value_type (struct value *value, |
58 | struct type *type); | |
91294c83 AC |
59 | |
60 | /* Only used for bitfields; number of bits contained in them. */ | |
61 | ||
0e03807e | 62 | extern int value_bitsize (const struct value *); |
9bbda503 | 63 | extern void set_value_bitsize (struct value *, int bit); |
91294c83 AC |
64 | |
65 | /* Only used for bitfields; position of start of field. For | |
32c9a795 MD |
66 | gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For |
67 | gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */ | |
91294c83 | 68 | |
0e03807e | 69 | extern int value_bitpos (const struct value *); |
9bbda503 | 70 | extern void set_value_bitpos (struct value *, int bit); |
f5cf64a7 | 71 | |
4ea48cc1 DJ |
72 | /* Only used for bitfields; the containing value. This allows a |
73 | single read from the target when displaying multiple | |
74 | bitfields. */ | |
75 | ||
76 | struct value *value_parent (struct value *); | |
77 | ||
91294c83 AC |
78 | /* Describes offset of a value within lval of a structure in bytes. |
79 | If lval == lval_memory, this is an offset to the address. If lval | |
80 | == lval_register, this is a further offset from location.address | |
81 | within the registers structure. Note also the member | |
82 | embedded_offset below. */ | |
83 | ||
0e03807e | 84 | extern int value_offset (const struct value *); |
f5cf64a7 | 85 | extern void set_value_offset (struct value *, int offset); |
df407dfe | 86 | |
88e3b34b AC |
87 | /* The comment from "struct value" reads: ``Is it modifiable? Only |
88 | relevant if lval != not_lval.''. Shouldn't the value instead be | |
89 | not_lval and be done with it? */ | |
91294c83 | 90 | |
88e3b34b AC |
91 | extern int deprecated_value_modifiable (struct value *value); |
92 | extern void deprecated_set_value_modifiable (struct value *value, | |
93 | int modifiable); | |
94 | ||
91294c83 AC |
95 | /* If a value represents a C++ object, then the `type' field gives the |
96 | object's compile-time type. If the object actually belongs to some | |
97 | class derived from `type', perhaps with other base classes and | |
98 | additional members, then `type' is just a subobject of the real | |
99 | thing, and the full object is probably larger than `type' would | |
100 | suggest. | |
101 | ||
102 | If `type' is a dynamic class (i.e. one with a vtable), then GDB can | |
103 | actually determine the object's run-time type by looking at the | |
104 | run-time type information in the vtable. When this information is | |
105 | available, we may elect to read in the entire object, for several | |
106 | reasons: | |
107 | ||
108 | - When printing the value, the user would probably rather see the | |
109 | full object, not just the limited portion apparent from the | |
110 | compile-time type. | |
111 | ||
112 | - If `type' has virtual base classes, then even printing `type' | |
113 | alone may require reaching outside the `type' portion of the | |
114 | object to wherever the virtual base class has been stored. | |
115 | ||
116 | When we store the entire object, `enclosing_type' is the run-time | |
117 | type -- the complete object -- and `embedded_offset' is the offset | |
118 | of `type' within that larger type, in bytes. The value_contents() | |
119 | macro takes `embedded_offset' into account, so most GDB code | |
120 | continues to see the `type' portion of the value, just as the | |
121 | inferior would. | |
122 | ||
123 | If `type' is a pointer to an object, then `enclosing_type' is a | |
124 | pointer to the object's run-time type, and `pointed_to_offset' is | |
125 | the offset in bytes from the full object to the pointed-to object | |
126 | -- that is, the value `embedded_offset' would have if we followed | |
127 | the pointer and fetched the complete object. (I don't really see | |
128 | the point. Why not just determine the run-time type when you | |
129 | indirect, and avoid the special case? The contents don't matter | |
130 | until you indirect anyway.) | |
131 | ||
132 | If we're not doing anything fancy, `enclosing_type' is equal to | |
133 | `type', and `embedded_offset' is zero, so everything works | |
134 | normally. */ | |
135 | ||
4754a64e | 136 | extern struct type *value_enclosing_type (struct value *); |
4dfea560 DE |
137 | extern void set_value_enclosing_type (struct value *val, |
138 | struct type *new_type); | |
139 | ||
91294c83 AC |
140 | extern int value_pointed_to_offset (struct value *value); |
141 | extern void set_value_pointed_to_offset (struct value *value, int val); | |
142 | extern int value_embedded_offset (struct value *value); | |
143 | extern void set_value_embedded_offset (struct value *value, int val); | |
144 | ||
5f5233d4 PA |
145 | /* For lval_computed values, this structure holds functions used to |
146 | retrieve and set the value (or portions of the value). | |
147 | ||
148 | For each function, 'V' is the 'this' pointer: an lval_funcs | |
149 | function F may always assume that the V it receives is an | |
150 | lval_computed value, and has F in the appropriate slot of its | |
151 | lval_funcs structure. */ | |
152 | ||
153 | struct lval_funcs | |
154 | { | |
155 | /* Fill in VALUE's contents. This is used to "un-lazy" values. If | |
156 | a problem arises in obtaining VALUE's bits, this function should | |
ac71a68c JK |
157 | call 'error'. If it is NULL value_fetch_lazy on "un-lazy" |
158 | non-optimized-out value is an internal error. */ | |
5f5233d4 PA |
159 | void (*read) (struct value *v); |
160 | ||
161 | /* Handle an assignment TOVAL = FROMVAL by writing the value of | |
162 | FROMVAL to TOVAL's location. The contents of TOVAL have not yet | |
163 | been updated. If a problem arises in doing so, this function | |
ac71a68c JK |
164 | should call 'error'. If it is NULL such TOVAL assignment is an error as |
165 | TOVAL is not considered as an lvalue. */ | |
5f5233d4 PA |
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 | ||
a471c594 JK |
181 | /* If non-NULL, this is used to implement reference resolving for |
182 | this value. This method may return NULL, in which case coerce_ref | |
183 | will fall back to ordinary references resolving. */ | |
184 | struct value *(*coerce_ref) (const struct value *value); | |
185 | ||
8cf6f0b1 TT |
186 | /* If non-NULL, this is used to determine whether the indicated bits |
187 | of VALUE are a synthetic pointer. */ | |
188 | int (*check_synthetic_pointer) (const struct value *value, | |
189 | int offset, int length); | |
190 | ||
5f5233d4 PA |
191 | /* Return a duplicate of VALUE's closure, for use in a new value. |
192 | This may simply return the same closure, if VALUE's is | |
193 | reference-counted or statically allocated. | |
194 | ||
195 | This may be NULL, in which case VALUE's closure is re-used in the | |
196 | new value. */ | |
0e03807e | 197 | void *(*copy_closure) (const struct value *v); |
5f5233d4 PA |
198 | |
199 | /* Drop VALUE's reference to its closure. Maybe this frees the | |
200 | closure; maybe this decrements a reference count; maybe the | |
201 | closure is statically allocated and this does nothing. | |
202 | ||
203 | This may be NULL, in which case no action is taken to free | |
204 | VALUE's closure. */ | |
205 | void (*free_closure) (struct value *v); | |
206 | }; | |
207 | ||
208 | /* Create a computed lvalue, with type TYPE, function pointers FUNCS, | |
209 | and closure CLOSURE. */ | |
210 | ||
211 | extern struct value *allocate_computed_value (struct type *type, | |
c8f2448a JK |
212 | const struct lval_funcs *funcs, |
213 | void *closure); | |
5f5233d4 | 214 | |
a7035dbb JK |
215 | extern struct value *allocate_optimized_out_value (struct type *type); |
216 | ||
5f5233d4 PA |
217 | /* If VALUE is lval_computed, return its lval_funcs structure. */ |
218 | ||
a471c594 | 219 | extern const struct lval_funcs *value_computed_funcs (const struct value *); |
5f5233d4 PA |
220 | |
221 | /* If VALUE is lval_computed, return its closure. The meaning of the | |
222 | returned value depends on the functions VALUE uses. */ | |
223 | ||
0e03807e | 224 | extern void *value_computed_closure (const struct value *value); |
5f5233d4 | 225 | |
91294c83 | 226 | /* If zero, contents of this value are in the contents field. If |
9214ee5f DJ |
227 | nonzero, contents are in inferior. If the lval field is lval_memory, |
228 | the contents are in inferior memory at location.address plus offset. | |
229 | The lval field may also be lval_register. | |
91294c83 AC |
230 | |
231 | WARNING: This field is used by the code which handles watchpoints | |
232 | (see breakpoint.c) to decide whether a particular value can be | |
233 | watched by hardware watchpoints. If the lazy flag is set for some | |
234 | member of a value chain, it is assumed that this member of the | |
235 | chain doesn't need to be watched as part of watching the value | |
236 | itself. This is how GDB avoids watching the entire struct or array | |
237 | when the user wants to watch a single struct member or array | |
238 | element. If you ever change the way lazy flag is set and reset, be | |
239 | sure to consider this use as well! */ | |
240 | ||
d69fe07e | 241 | extern int value_lazy (struct value *); |
dfa52d88 | 242 | extern void set_value_lazy (struct value *value, int val); |
dea7f9ba | 243 | |
4e5d721f DE |
244 | extern int value_stack (struct value *); |
245 | extern void set_value_stack (struct value *value, int val); | |
246 | ||
0fd88904 AC |
247 | /* value_contents() and value_contents_raw() both return the address |
248 | of the gdb buffer used to hold a copy of the contents of the lval. | |
249 | value_contents() is used when the contents of the buffer are needed | |
dea7f9ba | 250 | -- it uses value_fetch_lazy() to load the buffer from the process |
0fd88904 AC |
251 | being debugged if it hasn't already been loaded |
252 | (value_contents_writeable() is used when a writeable but fetched | |
253 | buffer is required).. value_contents_raw() is used when data is | |
254 | being stored into the buffer, or when it is certain that the | |
255 | contents of the buffer are valid. | |
dea7f9ba | 256 | |
c906108c SS |
257 | Note: The contents pointer is adjusted by the offset required to |
258 | get to the real subobject, if the value happens to represent | |
dea7f9ba | 259 | something embedded in a larger run-time object. */ |
c906108c | 260 | |
fc1a4b47 | 261 | extern gdb_byte *value_contents_raw (struct value *); |
91294c83 AC |
262 | |
263 | /* Actual contents of the value. For use of this value; setting it | |
264 | uses the stuff above. Not valid if lazy is nonzero. Target | |
265 | byte-order. We force it to be aligned properly for any possible | |
266 | value. Note that a value therefore extends beyond what is | |
267 | declared here. */ | |
268 | ||
fc1a4b47 AC |
269 | extern const gdb_byte *value_contents (struct value *); |
270 | extern gdb_byte *value_contents_writeable (struct value *); | |
c906108c SS |
271 | |
272 | /* The ALL variants of the above two macros do not adjust the returned | |
dea7f9ba | 273 | pointer by the embedded_offset value. */ |
c5aa993b | 274 | |
fc1a4b47 AC |
275 | extern gdb_byte *value_contents_all_raw (struct value *); |
276 | extern const gdb_byte *value_contents_all (struct value *); | |
c5aa993b | 277 | |
0e03807e TT |
278 | /* Like value_contents_all, but does not require that the returned |
279 | bits be valid. This should only be used in situations where you | |
280 | plan to check the validity manually. */ | |
281 | extern const gdb_byte *value_contents_for_printing (struct value *value); | |
282 | ||
de4127a3 PA |
283 | /* Like value_contents_for_printing, but accepts a constant value |
284 | pointer. Unlike value_contents_for_printing however, the pointed | |
285 | value must _not_ be lazy. */ | |
286 | extern const gdb_byte * | |
287 | value_contents_for_printing_const (const struct value *value); | |
288 | ||
f23631e4 | 289 | extern int value_fetch_lazy (struct value *val); |
a6c442d8 | 290 | extern int value_contents_equal (struct value *val1, struct value *val2); |
c906108c | 291 | |
91294c83 AC |
292 | /* If nonzero, this is the value of a variable which does not actually |
293 | exist in the program. */ | |
feb13ab0 AC |
294 | extern int value_optimized_out (struct value *value); |
295 | extern void set_value_optimized_out (struct value *value, int val); | |
c906108c | 296 | |
0e03807e TT |
297 | /* Like value_optimized_out, but return false if any bit in the object |
298 | is valid. */ | |
299 | extern int value_entirely_optimized_out (const struct value *value); | |
300 | ||
f372da99 | 301 | /* Set or return field indicating whether a variable is initialized or |
581e13c1 | 302 | not, based on debugging information supplied by the compiler. |
f372da99 CT |
303 | 1 = initialized; 0 = uninitialized. */ |
304 | extern int value_initialized (struct value *); | |
305 | extern void set_value_initialized (struct value *, int); | |
306 | ||
74bcbdf3 PA |
307 | /* Set COMPONENT's location as appropriate for a component of WHOLE |
308 | --- regardless of what kind of lvalue WHOLE is. */ | |
309 | extern void set_value_component_location (struct value *component, | |
0e03807e | 310 | const struct value *whole); |
74bcbdf3 | 311 | |
13bb5560 AC |
312 | /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a |
313 | single value might have multiple LVALs), this hacked interface is | |
314 | limited to just the first PIECE. Expect further change. */ | |
91294c83 AC |
315 | /* Type of value; either not an lval, or one of the various different |
316 | possible kinds of lval. */ | |
13bb5560 AC |
317 | extern enum lval_type *deprecated_value_lval_hack (struct value *); |
318 | #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val)) | |
91294c83 | 319 | |
a471c594 JK |
320 | /* Like VALUE_LVAL, except the parameter can be const. */ |
321 | extern enum lval_type value_lval_const (const struct value *value); | |
322 | ||
42ae5230 TT |
323 | /* If lval == lval_memory, return the address in the inferior. If |
324 | lval == lval_register, return the byte offset into the registers | |
325 | structure. Otherwise, return 0. The returned address | |
326 | includes the offset, if any. */ | |
de4127a3 | 327 | extern CORE_ADDR value_address (const struct value *); |
42ae5230 TT |
328 | |
329 | /* Like value_address, except the result does not include value's | |
330 | offset. */ | |
331 | extern CORE_ADDR value_raw_address (struct value *); | |
332 | ||
333 | /* Set the address of a value. */ | |
334 | extern void set_value_address (struct value *, CORE_ADDR); | |
91294c83 AC |
335 | |
336 | /* Pointer to internal variable. */ | |
13bb5560 AC |
337 | extern struct internalvar **deprecated_value_internalvar_hack (struct value *); |
338 | #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val)) | |
91294c83 AC |
339 | |
340 | /* Frame register value is relative to. This will be described in the | |
341 | lval enum above as "lval_register". */ | |
13bb5560 AC |
342 | extern struct frame_id *deprecated_value_frame_id_hack (struct value *); |
343 | #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val)) | |
91294c83 AC |
344 | |
345 | /* Register number if the value is from a register. */ | |
13bb5560 AC |
346 | extern short *deprecated_value_regnum_hack (struct value *); |
347 | #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val)) | |
348 | ||
a471c594 JK |
349 | /* Return value after lval_funcs->coerce_ref (after check_typedef). Return |
350 | NULL if lval_funcs->coerce_ref is not applicable for whatever reason. */ | |
351 | ||
352 | extern struct value *coerce_ref_if_computed (const struct value *arg); | |
353 | ||
dea7f9ba | 354 | /* Convert a REF to the object referenced. */ |
c906108c | 355 | |
994b9211 | 356 | extern struct value *coerce_ref (struct value *value); |
c906108c SS |
357 | |
358 | /* If ARG is an array, convert it to a pointer. | |
c906108c SS |
359 | If ARG is a function, convert it to a function pointer. |
360 | ||
361 | References are dereferenced. */ | |
362 | ||
994b9211 | 363 | extern struct value *coerce_array (struct value *value); |
c906108c | 364 | |
0e03807e TT |
365 | /* Given a value, determine whether the bits starting at OFFSET and |
366 | extending for LENGTH bits are valid. This returns nonzero if all | |
367 | bits in the given range are valid, zero if any bit is invalid. */ | |
368 | ||
369 | extern int value_bits_valid (const struct value *value, | |
370 | int offset, int length); | |
371 | ||
8cf6f0b1 TT |
372 | /* Given a value, determine whether the bits starting at OFFSET and |
373 | extending for LENGTH bits are a synthetic pointer. */ | |
374 | ||
375 | extern int value_bits_synthetic_pointer (const struct value *value, | |
376 | int offset, int length); | |
377 | ||
4e07d55f PA |
378 | /* Given a value, determine whether the contents bytes starting at |
379 | OFFSET and extending for LENGTH bytes are available. This returns | |
380 | nonzero if all bytes in the given range are available, zero if any | |
381 | byte is unavailable. */ | |
382 | ||
383 | extern int value_bytes_available (const struct value *value, | |
384 | int offset, int length); | |
385 | ||
ec0a52e1 PA |
386 | /* Like value_bytes_available, but return false if any byte in the |
387 | whole object is unavailable. */ | |
388 | extern int value_entirely_available (struct value *value); | |
389 | ||
4e07d55f PA |
390 | /* Mark VALUE's content bytes starting at OFFSET and extending for |
391 | LENGTH bytes as unavailable. */ | |
392 | ||
393 | extern void mark_value_bytes_unavailable (struct value *value, | |
394 | int offset, int length); | |
c8c1c22f PA |
395 | |
396 | /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with | |
cd24cfaa PA |
397 | LENGTH bytes of VAL2's contents starting at OFFSET2. |
398 | ||
399 | Note that "contents" refers to the whole value's contents | |
400 | (value_contents_all), without any embedded offset adjustment. For | |
401 | example, to compare a complete object value with itself, including | |
402 | its enclosing type chunk, you'd do: | |
403 | ||
404 | int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val))); | |
405 | value_available_contents (val, 0, val, 0, len); | |
406 | ||
407 | Returns true iff the set of available contents match. Unavailable | |
408 | contents compare equal with unavailable contents, and different | |
409 | with any available byte. For example, if 'x's represent an | |
410 | unavailable byte, and 'V' and 'Z' represent different available | |
411 | bytes, in a value with length 16: | |
c8c1c22f PA |
412 | |
413 | offset: 0 4 8 12 16 | |
414 | contents: xxxxVVVVxxxxVVZZ | |
415 | ||
416 | then: | |
417 | ||
418 | value_available_contents_eq(val, 0, val, 8, 6) => 1 | |
419 | value_available_contents_eq(val, 0, val, 4, 4) => 1 | |
420 | value_available_contents_eq(val, 0, val, 8, 8) => 0 | |
421 | value_available_contents_eq(val, 4, val, 12, 2) => 1 | |
422 | value_available_contents_eq(val, 4, val, 12, 4) => 0 | |
423 | value_available_contents_eq(val, 3, val, 4, 4) => 0 | |
424 | */ | |
425 | ||
426 | extern int value_available_contents_eq (const struct value *val1, int offset1, | |
427 | const struct value *val2, int offset2, | |
428 | int length); | |
4e07d55f | 429 | |
e6ca34fc PA |
430 | /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which |
431 | is (or will be copied to) VAL's contents buffer offset by | |
432 | EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]). | |
433 | Marks value contents ranges as unavailable if the corresponding | |
434 | memory is likewise unavailable. STACK indicates whether the memory | |
435 | is known to be stack memory. */ | |
436 | ||
424447ee | 437 | extern void read_value_memory (struct value *val, int embedded_offset, |
e6ca34fc PA |
438 | int stack, CORE_ADDR memaddr, |
439 | gdb_byte *buffer, size_t length); | |
440 | ||
c906108c | 441 | \f |
c5aa993b | 442 | |
c906108c SS |
443 | #include "symtab.h" |
444 | #include "gdbtypes.h" | |
445 | #include "expression.h" | |
446 | ||
c906108c SS |
447 | struct frame_info; |
448 | struct fn_field; | |
c906108c | 449 | |
5af949e3 UW |
450 | extern void print_address_demangle (struct gdbarch *, CORE_ADDR, |
451 | struct ui_file *, int); | |
c906108c | 452 | |
f23631e4 | 453 | extern LONGEST value_as_long (struct value *val); |
f23631e4 | 454 | extern DOUBLEST value_as_double (struct value *val); |
f23631e4 | 455 | extern CORE_ADDR value_as_address (struct value *val); |
c906108c | 456 | |
fc1a4b47 AC |
457 | extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr); |
458 | extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr, | |
66140c26 | 459 | int *invp); |
fc1a4b47 | 460 | extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr); |
5467c6c8 PA |
461 | |
462 | extern int unpack_value_bits_as_long (struct type *field_type, | |
463 | const gdb_byte *valaddr, | |
464 | int embedded_offset, int bitpos, | |
465 | int bitsize, | |
466 | const struct value *original_value, | |
467 | LONGEST *result); | |
468 | ||
8929e59d | 469 | extern LONGEST unpack_field_as_long (struct type *type, |
fc1a4b47 | 470 | const gdb_byte *valaddr, |
a14ed312 | 471 | int fieldno); |
5467c6c8 PA |
472 | extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr, |
473 | int embedded_offset, int fieldno, | |
474 | const struct value *val, LONGEST *result); | |
475 | ||
476 | extern struct value *value_field_bitfield (struct type *type, int fieldno, | |
477 | const gdb_byte *valaddr, | |
478 | int embedded_offset, | |
479 | const struct value *val); | |
c906108c | 480 | |
14d06750 DJ |
481 | extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num); |
482 | ||
f23631e4 | 483 | extern struct value *value_from_longest (struct type *type, LONGEST num); |
595939de | 484 | extern struct value *value_from_ulongest (struct type *type, ULONGEST num); |
f23631e4 | 485 | extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr); |
f23631e4 | 486 | extern struct value *value_from_double (struct type *type, DOUBLEST num); |
4ef30785 TJB |
487 | extern struct value *value_from_decfloat (struct type *type, |
488 | const gdb_byte *decbytes); | |
3bd0f5ef | 489 | extern struct value *value_from_history_ref (char *, char **); |
0f71a2f6 | 490 | |
00a4c844 AC |
491 | extern struct value *value_at (struct type *type, CORE_ADDR addr); |
492 | extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr); | |
c906108c | 493 | |
8acb6b92 TT |
494 | extern struct value *value_from_contents_and_address (struct type *, |
495 | const gdb_byte *, | |
496 | CORE_ADDR); | |
8a9b8146 | 497 | extern struct value *value_from_contents (struct type *, const gdb_byte *); |
8acb6b92 | 498 | |
9acbedc0 UW |
499 | extern struct value *default_value_from_register (struct type *type, |
500 | int regnum, | |
501 | struct frame_info *frame); | |
502 | ||
b56d6f31 JB |
503 | extern void read_frame_register_value (struct value *value, |
504 | struct frame_info *frame); | |
505 | ||
f23631e4 AC |
506 | extern struct value *value_from_register (struct type *type, int regnum, |
507 | struct frame_info *frame); | |
c906108c | 508 | |
0b2b0195 UW |
509 | extern CORE_ADDR address_from_register (struct type *type, int regnum, |
510 | struct frame_info *frame); | |
511 | ||
9df2fbc4 PM |
512 | extern struct value *value_of_variable (struct symbol *var, |
513 | const struct block *b); | |
c906108c | 514 | |
61212c0f UW |
515 | extern struct value *address_of_variable (struct symbol *var, struct block *b); |
516 | ||
89f5065b | 517 | extern struct value *value_of_register (int regnum, struct frame_info *frame); |
c906108c | 518 | |
9214ee5f DJ |
519 | struct value *value_of_register_lazy (struct frame_info *frame, int regnum); |
520 | ||
a14ed312 | 521 | extern int symbol_read_needs_frame (struct symbol *); |
c906108c | 522 | |
f23631e4 AC |
523 | extern struct value *read_var_value (struct symbol *var, |
524 | struct frame_info *frame); | |
c906108c | 525 | |
f23631e4 | 526 | extern struct value *allocate_value (struct type *type); |
3e3d7139 JG |
527 | extern struct value *allocate_value_lazy (struct type *type); |
528 | extern void allocate_value_contents (struct value *value); | |
39d37385 PA |
529 | extern void value_contents_copy (struct value *dst, int dst_offset, |
530 | struct value *src, int src_offset, | |
531 | int length); | |
532 | extern void value_contents_copy_raw (struct value *dst, int dst_offset, | |
533 | struct value *src, int src_offset, | |
534 | int length); | |
c906108c | 535 | |
f23631e4 | 536 | extern struct value *allocate_repeat_value (struct type *type, int count); |
c906108c | 537 | |
f23631e4 | 538 | extern struct value *value_mark (void); |
c906108c | 539 | |
f23631e4 | 540 | extern void value_free_to_mark (struct value *mark); |
c906108c | 541 | |
3b7538c0 UW |
542 | extern struct value *value_cstring (char *ptr, int len, |
543 | struct type *char_type); | |
544 | extern struct value *value_string (char *ptr, int len, | |
545 | struct type *char_type); | |
22601c15 UW |
546 | extern struct value *value_bitstring (char *ptr, int len, |
547 | struct type *index_type); | |
c906108c | 548 | |
f23631e4 | 549 | extern struct value *value_array (int lowbound, int highbound, |
89f5065b | 550 | struct value **elemvec); |
c906108c | 551 | |
f23631e4 | 552 | extern struct value *value_concat (struct value *arg1, struct value *arg2); |
c906108c | 553 | |
f23631e4 AC |
554 | extern struct value *value_binop (struct value *arg1, struct value *arg2, |
555 | enum exp_opcode op); | |
c906108c | 556 | |
2497b498 | 557 | extern struct value *value_ptradd (struct value *arg1, LONGEST arg2); |
89eef114 UW |
558 | |
559 | extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2); | |
c906108c | 560 | |
63092375 DJ |
561 | extern int value_must_coerce_to_target (struct value *arg1); |
562 | ||
563 | extern struct value *value_coerce_to_target (struct value *arg1); | |
564 | ||
f23631e4 | 565 | extern struct value *value_coerce_array (struct value *arg1); |
c906108c | 566 | |
f23631e4 | 567 | extern struct value *value_coerce_function (struct value *arg1); |
c906108c | 568 | |
f23631e4 | 569 | extern struct value *value_ind (struct value *arg1); |
c906108c | 570 | |
f23631e4 | 571 | extern struct value *value_addr (struct value *arg1); |
c906108c | 572 | |
fb933624 DJ |
573 | extern struct value *value_ref (struct value *arg1); |
574 | ||
89f5065b AC |
575 | extern struct value *value_assign (struct value *toval, |
576 | struct value *fromval); | |
c906108c | 577 | |
36e9969c NS |
578 | extern struct value *value_pos (struct value *arg1); |
579 | ||
f23631e4 | 580 | extern struct value *value_neg (struct value *arg1); |
c906108c | 581 | |
f23631e4 | 582 | extern struct value *value_complement (struct value *arg1); |
c906108c | 583 | |
f23631e4 AC |
584 | extern struct value *value_struct_elt (struct value **argp, |
585 | struct value **args, | |
714f19d5 TT |
586 | const char *name, int *static_memfuncp, |
587 | const char *err); | |
c906108c | 588 | |
79c2c32d | 589 | extern struct value *value_aggregate_elt (struct type *curtype, |
0d5de010 | 590 | char *name, |
072bba3b | 591 | struct type *expect_type, |
0d5de010 DJ |
592 | int want_address, |
593 | enum noside noside); | |
c906108c | 594 | |
f23631e4 | 595 | extern struct value *value_static_field (struct type *type, int fieldno); |
c906108c | 596 | |
714f19d5 TT |
597 | extern struct fn_field *value_find_oload_method_list (struct value **, |
598 | const char *, | |
4a1970e4 | 599 | int, int *, |
a14ed312 | 600 | struct type **, int *); |
7a292a7a | 601 | |
4c3376c8 SW |
602 | enum oload_search_type { NON_METHOD, METHOD, BOTH }; |
603 | ||
da096638 | 604 | extern int find_overload_match (struct value **args, int nargs, |
4c3376c8 SW |
605 | const char *name, |
606 | enum oload_search_type method, int lax, | |
7f8c9282 | 607 | struct value **objp, struct symbol *fsym, |
f23631e4 | 608 | struct value **valp, struct symbol **symp, |
7322dca9 | 609 | int *staticp, const int no_adl); |
c906108c | 610 | |
f23631e4 | 611 | extern struct value *value_field (struct value *arg1, int fieldno); |
c906108c | 612 | |
f23631e4 AC |
613 | extern struct value *value_primitive_field (struct value *arg1, int offset, |
614 | int fieldno, | |
615 | struct type *arg_type); | |
c906108c | 616 | |
c906108c | 617 | |
f23631e4 AC |
618 | extern struct type *value_rtti_target_type (struct value *, int *, int *, |
619 | int *); | |
c906108c | 620 | |
f23631e4 AC |
621 | extern struct value *value_full_object (struct value *, struct type *, int, |
622 | int, int); | |
c906108c | 623 | |
fb933624 DJ |
624 | extern struct value *value_cast_pointers (struct type *, struct value *); |
625 | ||
f23631e4 | 626 | extern struct value *value_cast (struct type *type, struct value *arg2); |
c906108c | 627 | |
4e8f195d TT |
628 | extern struct value *value_reinterpret_cast (struct type *type, |
629 | struct value *arg); | |
630 | ||
631 | extern struct value *value_dynamic_cast (struct type *type, struct value *arg); | |
632 | ||
f23631e4 | 633 | extern struct value *value_zero (struct type *type, enum lval_type lv); |
c906108c | 634 | |
18a46dbe | 635 | extern struct value *value_one (struct type *type); |
301f0ecf | 636 | |
f23631e4 | 637 | extern struct value *value_repeat (struct value *arg1, int count); |
c906108c | 638 | |
2497b498 | 639 | extern struct value *value_subscript (struct value *array, LONGEST index); |
c906108c | 640 | |
afc05acb UW |
641 | extern struct value *value_bitstring_subscript (struct type *type, |
642 | struct value *bitstring, | |
2497b498 | 643 | LONGEST index); |
afc05acb | 644 | |
5fe830e4 AC |
645 | extern struct value *register_value_being_returned (struct type *valtype, |
646 | struct regcache *retbuf); | |
c906108c | 647 | |
fbb06eb1 | 648 | extern int value_in (struct value *element, struct value *set); |
c906108c | 649 | |
fc1a4b47 | 650 | extern int value_bit_index (struct type *type, const gdb_byte *addr, |
c84141d6 | 651 | int index); |
c906108c | 652 | |
d80b854b UW |
653 | extern int using_struct_return (struct gdbarch *gdbarch, |
654 | struct type *func_type, | |
c055b101 | 655 | struct type *value_type); |
c906108c | 656 | |
f23631e4 | 657 | extern struct value *evaluate_expression (struct expression *exp); |
c906108c | 658 | |
f23631e4 | 659 | extern struct value *evaluate_type (struct expression *exp); |
c906108c | 660 | |
4b27a620 JB |
661 | extern struct value *evaluate_subexp (struct type *expect_type, |
662 | struct expression *exp, | |
663 | int *pos, enum noside noside); | |
664 | ||
65d12d83 TT |
665 | extern struct value *evaluate_subexpression_type (struct expression *exp, |
666 | int subexp); | |
667 | ||
0cf6dd15 TJB |
668 | extern void fetch_subexp_value (struct expression *exp, int *pc, |
669 | struct value **valp, struct value **resultp, | |
670 | struct value **val_chain); | |
671 | ||
65d12d83 TT |
672 | extern char *extract_field_op (struct expression *exp, int *subexp); |
673 | ||
f23631e4 AC |
674 | extern struct value *evaluate_subexp_with_coercion (struct expression *, |
675 | int *, enum noside); | |
c906108c | 676 | |
f23631e4 | 677 | extern struct value *parse_and_eval (char *exp); |
c906108c | 678 | |
f23631e4 | 679 | extern struct value *parse_to_comma_and_eval (char **expp); |
c906108c | 680 | |
a14ed312 | 681 | extern struct type *parse_and_eval_type (char *p, int length); |
c906108c | 682 | |
a14ed312 | 683 | extern CORE_ADDR parse_and_eval_address (char *exp); |
c906108c | 684 | |
bb518678 DT |
685 | extern LONGEST parse_and_eval_long (char *exp); |
686 | ||
4066e646 UW |
687 | extern void unop_promote (const struct language_defn *language, |
688 | struct gdbarch *gdbarch, | |
689 | struct value **arg1); | |
690 | ||
691 | extern void binop_promote (const struct language_defn *language, | |
692 | struct gdbarch *gdbarch, | |
693 | struct value **arg1, struct value **arg2); | |
694 | ||
f23631e4 | 695 | extern struct value *access_value_history (int num); |
c906108c | 696 | |
78267919 UW |
697 | extern struct value *value_of_internalvar (struct gdbarch *gdbarch, |
698 | struct internalvar *var); | |
c906108c | 699 | |
4fa62494 UW |
700 | extern int get_internalvar_integer (struct internalvar *var, LONGEST *l); |
701 | ||
f23631e4 | 702 | extern void set_internalvar (struct internalvar *var, struct value *val); |
c906108c | 703 | |
4fa62494 UW |
704 | extern void set_internalvar_integer (struct internalvar *var, LONGEST l); |
705 | ||
78267919 UW |
706 | extern void set_internalvar_string (struct internalvar *var, |
707 | const char *string); | |
708 | ||
4fa62494 UW |
709 | extern void clear_internalvar (struct internalvar *var); |
710 | ||
a14ed312 KB |
711 | extern void set_internalvar_component (struct internalvar *var, |
712 | int offset, | |
713 | int bitpos, int bitsize, | |
f23631e4 | 714 | struct value *newvalue); |
c906108c | 715 | |
bc3b79fd | 716 | extern struct internalvar *lookup_only_internalvar (const char *name); |
c4a3d09a | 717 | |
bc3b79fd | 718 | extern struct internalvar *create_internalvar (const char *name); |
c4a3d09a | 719 | |
78267919 UW |
720 | typedef struct value * (*internalvar_make_value) (struct gdbarch *, |
721 | struct internalvar *); | |
4aa995e1 PA |
722 | extern struct internalvar * |
723 | create_internalvar_type_lazy (char *name, internalvar_make_value fun); | |
724 | ||
bc3b79fd | 725 | extern struct internalvar *lookup_internalvar (const char *name); |
c906108c | 726 | |
f23631e4 | 727 | extern int value_equal (struct value *arg1, struct value *arg2); |
c906108c | 728 | |
218d2fc6 TJB |
729 | extern int value_equal_contents (struct value *arg1, struct value *arg2); |
730 | ||
f23631e4 | 731 | extern int value_less (struct value *arg1, struct value *arg2); |
c906108c | 732 | |
f23631e4 | 733 | extern int value_logical_not (struct value *arg1); |
c906108c SS |
734 | |
735 | /* C++ */ | |
736 | ||
85bc8cb7 JK |
737 | extern struct value *value_of_this (const struct language_defn *lang); |
738 | ||
739 | extern struct value *value_of_this_silent (const struct language_defn *lang); | |
c906108c | 740 | |
f23631e4 AC |
741 | extern struct value *value_x_binop (struct value *arg1, struct value *arg2, |
742 | enum exp_opcode op, | |
743 | enum exp_opcode otherop, | |
744 | enum noside noside); | |
c906108c | 745 | |
f23631e4 AC |
746 | extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op, |
747 | enum noside noside); | |
c906108c | 748 | |
89f5065b | 749 | extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f, |
f23631e4 | 750 | int j, struct type *type, int offset); |
c906108c | 751 | |
be636754 PA |
752 | extern int binop_types_user_defined_p (enum exp_opcode op, |
753 | struct type *type1, | |
754 | struct type *type2); | |
755 | ||
f23631e4 AC |
756 | extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1, |
757 | struct value *arg2); | |
c906108c | 758 | |
f23631e4 | 759 | extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1); |
c906108c | 760 | |
d8228535 | 761 | extern int destructor_name_p (const char *name, struct type *type); |
c906108c | 762 | |
828d3400 DJ |
763 | extern void value_incref (struct value *val); |
764 | ||
3e3d7139 | 765 | extern void value_free (struct value *val); |
c906108c | 766 | |
a14ed312 | 767 | extern void free_all_values (void); |
c906108c | 768 | |
0cf6dd15 TJB |
769 | extern void free_value_chain (struct value *v); |
770 | ||
f23631e4 | 771 | extern void release_value (struct value *val); |
c906108c | 772 | |
e848a8a5 TT |
773 | extern void release_value_or_incref (struct value *val); |
774 | ||
f23631e4 | 775 | extern int record_latest_value (struct value *val); |
c906108c | 776 | |
50810684 UW |
777 | extern void modify_field (struct type *type, gdb_byte *addr, |
778 | LONGEST fieldval, int bitpos, int bitsize); | |
c906108c | 779 | |
89f5065b AC |
780 | extern void type_print (struct type *type, char *varstring, |
781 | struct ui_file *stream, int show); | |
c906108c | 782 | |
ae6a3a4c TJB |
783 | extern char *type_to_string (struct type *type); |
784 | ||
fc1a4b47 AC |
785 | extern gdb_byte *baseclass_addr (struct type *type, int index, |
786 | gdb_byte *valaddr, | |
8929e59d | 787 | struct value **valuep, int *errp); |
c906108c | 788 | |
89f5065b | 789 | extern void print_longest (struct ui_file *stream, int format, |
d9fcf2fb | 790 | int use_local, LONGEST val); |
c906108c | 791 | |
fc1a4b47 | 792 | extern void print_floating (const gdb_byte *valaddr, struct type *type, |
89f5065b | 793 | struct ui_file *stream); |
c906108c | 794 | |
7678ef8f TJB |
795 | extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type, |
796 | struct ui_file *stream); | |
797 | ||
79a45b7d TT |
798 | extern int value_print (struct value *val, struct ui_file *stream, |
799 | const struct value_print_options *options); | |
c906108c | 800 | |
f23631e4 AC |
801 | extern void value_print_array_elements (struct value *val, |
802 | struct ui_file *stream, int format, | |
d9fcf2fb | 803 | enum val_prettyprint pretty); |
c906108c | 804 | |
f23631e4 | 805 | extern struct value *value_release_to_mark (struct value *mark); |
c906108c | 806 | |
fc1a4b47 | 807 | extern int val_print (struct type *type, const gdb_byte *valaddr, |
d9fcf2fb | 808 | int embedded_offset, CORE_ADDR address, |
79a45b7d | 809 | struct ui_file *stream, int recurse, |
0e03807e | 810 | const struct value *val, |
79a45b7d | 811 | const struct value_print_options *options, |
d8ca156b | 812 | const struct language_defn *language); |
c906108c | 813 | |
806048c6 | 814 | extern int common_val_print (struct value *val, |
79a45b7d TT |
815 | struct ui_file *stream, int recurse, |
816 | const struct value_print_options *options, | |
d8ca156b | 817 | const struct language_defn *language); |
806048c6 | 818 | |
09ca9e2e TT |
819 | extern int val_print_string (struct type *elttype, const char *encoding, |
820 | CORE_ADDR addr, int len, | |
79a45b7d TT |
821 | struct ui_file *stream, |
822 | const struct value_print_options *options); | |
c906108c | 823 | |
aad95b57 TT |
824 | extern void print_variable_and_value (const char *name, |
825 | struct symbol *var, | |
826 | struct frame_info *frame, | |
827 | struct ui_file *stream, | |
828 | int indent); | |
c906108c | 829 | |
2b2d9e11 | 830 | extern int check_field (struct type *, const char *); |
c906108c | 831 | |
89f5065b AC |
832 | extern void typedef_print (struct type *type, struct symbol *news, |
833 | struct ui_file *stream); | |
c906108c | 834 | |
a14ed312 | 835 | extern char *internalvar_name (struct internalvar *var); |
c906108c | 836 | |
ae5a43e0 | 837 | extern void preserve_values (struct objfile *); |
c906108c SS |
838 | |
839 | /* From values.c */ | |
840 | ||
f23631e4 | 841 | extern struct value *value_copy (struct value *); |
c906108c | 842 | |
c37f7098 KW |
843 | extern struct value *value_non_lval (struct value *); |
844 | ||
4e7a5ef5 TT |
845 | extern void preserve_one_value (struct value *, struct objfile *, htab_t); |
846 | ||
c906108c SS |
847 | /* From valops.c */ |
848 | ||
f23631e4 | 849 | extern struct value *varying_to_slice (struct value *); |
c906108c | 850 | |
f23631e4 | 851 | extern struct value *value_slice (struct value *, int, int); |
c906108c | 852 | |
f23631e4 AC |
853 | extern struct value *value_literal_complex (struct value *, struct value *, |
854 | struct type *); | |
c906108c | 855 | |
3e3b026f UW |
856 | extern struct value *find_function_in_inferior (const char *, |
857 | struct objfile **); | |
c906108c | 858 | |
f23631e4 | 859 | extern struct value *value_allocate_space_in_inferior (int); |
c906108c | 860 | |
2497b498 UW |
861 | extern struct value *value_subscripted_rvalue (struct value *array, |
862 | LONGEST index, int lowerbound); | |
bc3b79fd TJB |
863 | |
864 | /* User function handler. */ | |
865 | ||
d452c4bc UW |
866 | typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch, |
867 | const struct language_defn *language, | |
868 | void *cookie, | |
bc3b79fd TJB |
869 | int argc, |
870 | struct value **argv); | |
871 | ||
872 | void add_internal_function (const char *name, const char *doc, | |
873 | internal_function_fn handler, | |
874 | void *cookie); | |
875 | ||
d452c4bc UW |
876 | struct value *call_internal_function (struct gdbarch *gdbarch, |
877 | const struct language_defn *language, | |
878 | struct value *function, | |
bc3b79fd TJB |
879 | int argc, struct value **argv); |
880 | ||
881 | char *value_internal_function_name (struct value *); | |
882 | ||
c5aa993b | 883 | #endif /* !defined (VALUE_H) */ |