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c906108c | 1 | /* Definitions for values of C expressions, for GDB. |
dea7f9ba | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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; |
e81e7f5e | 34 | struct xmethod_worker; |
d16aafd8 | 35 | |
9a0dc9e3 PA |
36 | /* Values can be partially 'optimized out' and/or 'unavailable'. |
37 | These are distinct states and have different string representations | |
38 | and related error strings. | |
39 | ||
40 | 'unavailable' has a specific meaning in this context. It means the | |
41 | value exists in the program (at the machine level), but GDB has no | |
42 | means to get to it. Such a value is normally printed as | |
43 | <unavailable>. Examples of how to end up with an unavailable value | |
44 | would be: | |
45 | ||
46 | - We're inspecting a traceframe, and the memory or registers the | |
47 | debug information says the value lives on haven't been collected. | |
48 | ||
49 | - We're inspecting a core dump, the memory or registers the debug | |
50 | information says the value lives aren't present in the dump | |
51 | (that is, we have a partial/trimmed core dump, or we don't fully | |
52 | understand/handle the core dump's format). | |
53 | ||
54 | - We're doing live debugging, but the debug API has no means to | |
55 | get at where the value lives in the machine, like e.g., ptrace | |
56 | not having access to some register or register set. | |
57 | ||
58 | - Any other similar scenario. | |
59 | ||
60 | OTOH, "optimized out" is about what the compiler decided to generate | |
61 | (or not generate). A chunk of a value that was optimized out does | |
62 | not actually exist in the program. There's no way to get at it | |
63 | short of compiling the program differently. | |
64 | ||
65 | A register that has not been saved in a frame is likewise considered | |
66 | optimized out, except not-saved registers have a different string | |
67 | representation and related error strings. E.g., we'll print them as | |
68 | <not-saved> instead of <optimized out>, as in: | |
69 | ||
70 | (gdb) p/x $rax | |
71 | $1 = <not saved> | |
72 | (gdb) info registers rax | |
73 | rax <not saved> | |
74 | ||
75 | If the debug info describes a variable as being in such a register, | |
76 | we'll still print the variable as <optimized out>. IOW, <not saved> | |
77 | is reserved for inspecting registers at the machine level. | |
78 | ||
79 | When comparing value contents, optimized out chunks, unavailable | |
80 | chunks, and valid contents data are all considered different. See | |
81 | value_contents_eq for more info. | |
82 | */ | |
83 | ||
dea7f9ba MK |
84 | /* The structure which defines the type of a value. It should never |
85 | be possible for a program lval value to survive over a call to the | |
86 | inferior (i.e. to be put into the history list or an internal | |
87 | variable). */ | |
c906108c | 88 | |
91294c83 | 89 | struct value; |
c906108c | 90 | |
17cf0ecd | 91 | /* Values are stored in a chain, so that they can be deleted easily |
a08702d6 TJB |
92 | over calls to the inferior. Values assigned to internal variables, |
93 | put into the value history or exposed to Python are taken off this | |
94 | list. */ | |
91294c83 | 95 | |
17cf0ecd AC |
96 | struct value *value_next (struct value *); |
97 | ||
91294c83 AC |
98 | /* Type of the value. */ |
99 | ||
0e03807e | 100 | extern struct type *value_type (const struct value *); |
91294c83 | 101 | |
e512cdbd SM |
102 | /* Return the gdbarch associated with the value. */ |
103 | ||
104 | extern struct gdbarch *get_value_arch (const struct value *value); | |
105 | ||
04624583 AC |
106 | /* This is being used to change the type of an existing value, that |
107 | code should instead be creating a new value with the changed type | |
108 | (but possibly shared content). */ | |
91294c83 | 109 | |
04624583 AC |
110 | extern void deprecated_set_value_type (struct value *value, |
111 | struct type *type); | |
91294c83 AC |
112 | |
113 | /* Only used for bitfields; number of bits contained in them. */ | |
114 | ||
0e03807e | 115 | extern int value_bitsize (const struct value *); |
9bbda503 | 116 | extern void set_value_bitsize (struct value *, int bit); |
91294c83 AC |
117 | |
118 | /* Only used for bitfields; position of start of field. For | |
32c9a795 MD |
119 | gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For |
120 | gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */ | |
91294c83 | 121 | |
0e03807e | 122 | extern int value_bitpos (const struct value *); |
9bbda503 | 123 | extern void set_value_bitpos (struct value *, int bit); |
f5cf64a7 | 124 | |
4ea48cc1 DJ |
125 | /* Only used for bitfields; the containing value. This allows a |
126 | single read from the target when displaying multiple | |
127 | bitfields. */ | |
128 | ||
129 | struct value *value_parent (struct value *); | |
53ba8333 | 130 | extern void set_value_parent (struct value *value, struct value *parent); |
4ea48cc1 | 131 | |
91294c83 AC |
132 | /* Describes offset of a value within lval of a structure in bytes. |
133 | If lval == lval_memory, this is an offset to the address. If lval | |
134 | == lval_register, this is a further offset from location.address | |
135 | within the registers structure. Note also the member | |
136 | embedded_offset below. */ | |
137 | ||
0e03807e | 138 | extern int value_offset (const struct value *); |
f5cf64a7 | 139 | extern void set_value_offset (struct value *, int offset); |
df407dfe | 140 | |
88e3b34b AC |
141 | /* The comment from "struct value" reads: ``Is it modifiable? Only |
142 | relevant if lval != not_lval.''. Shouldn't the value instead be | |
143 | not_lval and be done with it? */ | |
91294c83 | 144 | |
88e3b34b | 145 | extern int deprecated_value_modifiable (struct value *value); |
88e3b34b | 146 | |
91294c83 AC |
147 | /* If a value represents a C++ object, then the `type' field gives the |
148 | object's compile-time type. If the object actually belongs to some | |
149 | class derived from `type', perhaps with other base classes and | |
150 | additional members, then `type' is just a subobject of the real | |
151 | thing, and the full object is probably larger than `type' would | |
152 | suggest. | |
153 | ||
154 | If `type' is a dynamic class (i.e. one with a vtable), then GDB can | |
155 | actually determine the object's run-time type by looking at the | |
156 | run-time type information in the vtable. When this information is | |
157 | available, we may elect to read in the entire object, for several | |
158 | reasons: | |
159 | ||
160 | - When printing the value, the user would probably rather see the | |
161 | full object, not just the limited portion apparent from the | |
162 | compile-time type. | |
163 | ||
164 | - If `type' has virtual base classes, then even printing `type' | |
165 | alone may require reaching outside the `type' portion of the | |
166 | object to wherever the virtual base class has been stored. | |
167 | ||
168 | When we store the entire object, `enclosing_type' is the run-time | |
169 | type -- the complete object -- and `embedded_offset' is the offset | |
170 | of `type' within that larger type, in bytes. The value_contents() | |
171 | macro takes `embedded_offset' into account, so most GDB code | |
172 | continues to see the `type' portion of the value, just as the | |
173 | inferior would. | |
174 | ||
175 | If `type' is a pointer to an object, then `enclosing_type' is a | |
176 | pointer to the object's run-time type, and `pointed_to_offset' is | |
177 | the offset in bytes from the full object to the pointed-to object | |
178 | -- that is, the value `embedded_offset' would have if we followed | |
179 | the pointer and fetched the complete object. (I don't really see | |
180 | the point. Why not just determine the run-time type when you | |
181 | indirect, and avoid the special case? The contents don't matter | |
182 | until you indirect anyway.) | |
183 | ||
184 | If we're not doing anything fancy, `enclosing_type' is equal to | |
185 | `type', and `embedded_offset' is zero, so everything works | |
186 | normally. */ | |
187 | ||
4754a64e | 188 | extern struct type *value_enclosing_type (struct value *); |
4dfea560 DE |
189 | extern void set_value_enclosing_type (struct value *val, |
190 | struct type *new_type); | |
191 | ||
8264ba82 AG |
192 | /* Returns value_type or value_enclosing_type depending on |
193 | value_print_options.objectprint. | |
194 | ||
195 | If RESOLVE_SIMPLE_TYPES is 0 the enclosing type will be resolved | |
196 | only for pointers and references, else it will be returned | |
197 | for all the types (e.g. structures). This option is useful | |
198 | to prevent retrieving enclosing type for the base classes fields. | |
199 | ||
200 | REAL_TYPE_FOUND is used to inform whether the real type was found | |
201 | (or just static type was used). The NULL may be passed if it is not | |
202 | necessary. */ | |
203 | ||
204 | extern struct type *value_actual_type (struct value *value, | |
205 | int resolve_simple_types, | |
206 | int *real_type_found); | |
207 | ||
91294c83 AC |
208 | extern int value_pointed_to_offset (struct value *value); |
209 | extern void set_value_pointed_to_offset (struct value *value, int val); | |
210 | extern int value_embedded_offset (struct value *value); | |
211 | extern void set_value_embedded_offset (struct value *value, int val); | |
212 | ||
5f5233d4 PA |
213 | /* For lval_computed values, this structure holds functions used to |
214 | retrieve and set the value (or portions of the value). | |
215 | ||
216 | For each function, 'V' is the 'this' pointer: an lval_funcs | |
217 | function F may always assume that the V it receives is an | |
218 | lval_computed value, and has F in the appropriate slot of its | |
219 | lval_funcs structure. */ | |
220 | ||
221 | struct lval_funcs | |
222 | { | |
223 | /* Fill in VALUE's contents. This is used to "un-lazy" values. If | |
224 | a problem arises in obtaining VALUE's bits, this function should | |
ac71a68c JK |
225 | call 'error'. If it is NULL value_fetch_lazy on "un-lazy" |
226 | non-optimized-out value is an internal error. */ | |
5f5233d4 PA |
227 | void (*read) (struct value *v); |
228 | ||
229 | /* Handle an assignment TOVAL = FROMVAL by writing the value of | |
230 | FROMVAL to TOVAL's location. The contents of TOVAL have not yet | |
231 | been updated. If a problem arises in doing so, this function | |
ac71a68c JK |
232 | should call 'error'. If it is NULL such TOVAL assignment is an error as |
233 | TOVAL is not considered as an lvalue. */ | |
5f5233d4 PA |
234 | void (*write) (struct value *toval, struct value *fromval); |
235 | ||
8cf6f0b1 TT |
236 | /* If non-NULL, this is used to implement pointer indirection for |
237 | this value. This method may return NULL, in which case value_ind | |
238 | will fall back to ordinary indirection. */ | |
239 | struct value *(*indirect) (struct value *value); | |
240 | ||
a471c594 JK |
241 | /* If non-NULL, this is used to implement reference resolving for |
242 | this value. This method may return NULL, in which case coerce_ref | |
243 | will fall back to ordinary references resolving. */ | |
244 | struct value *(*coerce_ref) (const struct value *value); | |
245 | ||
8cf6f0b1 TT |
246 | /* If non-NULL, this is used to determine whether the indicated bits |
247 | of VALUE are a synthetic pointer. */ | |
248 | int (*check_synthetic_pointer) (const struct value *value, | |
249 | int offset, int length); | |
250 | ||
5f5233d4 PA |
251 | /* Return a duplicate of VALUE's closure, for use in a new value. |
252 | This may simply return the same closure, if VALUE's is | |
253 | reference-counted or statically allocated. | |
254 | ||
255 | This may be NULL, in which case VALUE's closure is re-used in the | |
256 | new value. */ | |
0e03807e | 257 | void *(*copy_closure) (const struct value *v); |
5f5233d4 PA |
258 | |
259 | /* Drop VALUE's reference to its closure. Maybe this frees the | |
260 | closure; maybe this decrements a reference count; maybe the | |
261 | closure is statically allocated and this does nothing. | |
262 | ||
263 | This may be NULL, in which case no action is taken to free | |
264 | VALUE's closure. */ | |
265 | void (*free_closure) (struct value *v); | |
266 | }; | |
267 | ||
268 | /* Create a computed lvalue, with type TYPE, function pointers FUNCS, | |
269 | and closure CLOSURE. */ | |
270 | ||
271 | extern struct value *allocate_computed_value (struct type *type, | |
c8f2448a JK |
272 | const struct lval_funcs *funcs, |
273 | void *closure); | |
5f5233d4 | 274 | |
a72c8f6a JK |
275 | /* Helper function to check the validity of some bits of a value. |
276 | ||
277 | If TYPE represents some aggregate type (e.g., a structure), return 1. | |
278 | ||
279 | Otherwise, any of the bytes starting at OFFSET and extending for | |
280 | TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and | |
281 | return 0. The checking is done using FUNCS. | |
282 | ||
283 | Otherwise, return 1. */ | |
284 | ||
285 | extern int valprint_check_validity (struct ui_file *stream, struct type *type, | |
286 | int embedded_offset, | |
287 | const struct value *val); | |
288 | ||
a7035dbb JK |
289 | extern struct value *allocate_optimized_out_value (struct type *type); |
290 | ||
5f5233d4 PA |
291 | /* If VALUE is lval_computed, return its lval_funcs structure. */ |
292 | ||
a471c594 | 293 | extern const struct lval_funcs *value_computed_funcs (const struct value *); |
5f5233d4 PA |
294 | |
295 | /* If VALUE is lval_computed, return its closure. The meaning of the | |
296 | returned value depends on the functions VALUE uses. */ | |
297 | ||
0e03807e | 298 | extern void *value_computed_closure (const struct value *value); |
5f5233d4 | 299 | |
91294c83 | 300 | /* If zero, contents of this value are in the contents field. If |
9214ee5f DJ |
301 | nonzero, contents are in inferior. If the lval field is lval_memory, |
302 | the contents are in inferior memory at location.address plus offset. | |
303 | The lval field may also be lval_register. | |
91294c83 AC |
304 | |
305 | WARNING: This field is used by the code which handles watchpoints | |
306 | (see breakpoint.c) to decide whether a particular value can be | |
307 | watched by hardware watchpoints. If the lazy flag is set for some | |
308 | member of a value chain, it is assumed that this member of the | |
309 | chain doesn't need to be watched as part of watching the value | |
310 | itself. This is how GDB avoids watching the entire struct or array | |
311 | when the user wants to watch a single struct member or array | |
312 | element. If you ever change the way lazy flag is set and reset, be | |
313 | sure to consider this use as well! */ | |
314 | ||
d69fe07e | 315 | extern int value_lazy (struct value *); |
dfa52d88 | 316 | extern void set_value_lazy (struct value *value, int val); |
dea7f9ba | 317 | |
4e5d721f DE |
318 | extern int value_stack (struct value *); |
319 | extern void set_value_stack (struct value *value, int val); | |
320 | ||
901461f8 PA |
321 | /* Throw an error complaining that the value has been optimized |
322 | out. */ | |
323 | ||
324 | extern void error_value_optimized_out (void); | |
325 | ||
0fd88904 AC |
326 | /* value_contents() and value_contents_raw() both return the address |
327 | of the gdb buffer used to hold a copy of the contents of the lval. | |
328 | value_contents() is used when the contents of the buffer are needed | |
dea7f9ba | 329 | -- it uses value_fetch_lazy() to load the buffer from the process |
0fd88904 AC |
330 | being debugged if it hasn't already been loaded |
331 | (value_contents_writeable() is used when a writeable but fetched | |
332 | buffer is required).. value_contents_raw() is used when data is | |
333 | being stored into the buffer, or when it is certain that the | |
334 | contents of the buffer are valid. | |
dea7f9ba | 335 | |
c906108c SS |
336 | Note: The contents pointer is adjusted by the offset required to |
337 | get to the real subobject, if the value happens to represent | |
dea7f9ba | 338 | something embedded in a larger run-time object. */ |
c906108c | 339 | |
fc1a4b47 | 340 | extern gdb_byte *value_contents_raw (struct value *); |
91294c83 AC |
341 | |
342 | /* Actual contents of the value. For use of this value; setting it | |
343 | uses the stuff above. Not valid if lazy is nonzero. Target | |
344 | byte-order. We force it to be aligned properly for any possible | |
345 | value. Note that a value therefore extends beyond what is | |
346 | declared here. */ | |
347 | ||
fc1a4b47 AC |
348 | extern const gdb_byte *value_contents (struct value *); |
349 | extern gdb_byte *value_contents_writeable (struct value *); | |
c906108c SS |
350 | |
351 | /* The ALL variants of the above two macros do not adjust the returned | |
dea7f9ba | 352 | pointer by the embedded_offset value. */ |
c5aa993b | 353 | |
fc1a4b47 AC |
354 | extern gdb_byte *value_contents_all_raw (struct value *); |
355 | extern const gdb_byte *value_contents_all (struct value *); | |
c5aa993b | 356 | |
0e03807e TT |
357 | /* Like value_contents_all, but does not require that the returned |
358 | bits be valid. This should only be used in situations where you | |
359 | plan to check the validity manually. */ | |
360 | extern const gdb_byte *value_contents_for_printing (struct value *value); | |
361 | ||
de4127a3 PA |
362 | /* Like value_contents_for_printing, but accepts a constant value |
363 | pointer. Unlike value_contents_for_printing however, the pointed | |
364 | value must _not_ be lazy. */ | |
365 | extern const gdb_byte * | |
366 | value_contents_for_printing_const (const struct value *value); | |
367 | ||
a844296a | 368 | extern void value_fetch_lazy (struct value *val); |
c906108c | 369 | |
91294c83 | 370 | /* If nonzero, this is the value of a variable which does not actually |
eca07816 JB |
371 | exist in the program, at least partially. If the value is lazy, |
372 | this may fetch it now. */ | |
feb13ab0 | 373 | extern int value_optimized_out (struct value *value); |
c906108c | 374 | |
9a0dc9e3 PA |
375 | /* Given a value, return true if any of the contents bits starting at |
376 | OFFSET and extending for LENGTH bits is optimized out, false | |
377 | otherwise. */ | |
378 | ||
379 | extern int value_bits_any_optimized_out (const struct value *value, | |
380 | int bit_offset, int bit_length); | |
381 | ||
382 | /* Like value_optimized_out, but return true iff the whole value is | |
383 | optimized out. */ | |
384 | extern int value_entirely_optimized_out (struct value *value); | |
385 | ||
386 | /* Mark VALUE's content bytes starting at OFFSET and extending for | |
387 | LENGTH bytes as optimized out. */ | |
388 | ||
389 | extern void mark_value_bytes_optimized_out (struct value *value, | |
390 | int offset, int length); | |
391 | ||
392 | /* Mark VALUE's content bits starting at OFFSET and extending for | |
393 | LENGTH bits as optimized out. */ | |
eca07816 | 394 | |
9a0dc9e3 PA |
395 | extern void mark_value_bits_optimized_out (struct value *value, |
396 | int offset, int length); | |
0e03807e | 397 | |
f372da99 | 398 | /* Set or return field indicating whether a variable is initialized or |
581e13c1 | 399 | not, based on debugging information supplied by the compiler. |
f372da99 CT |
400 | 1 = initialized; 0 = uninitialized. */ |
401 | extern int value_initialized (struct value *); | |
402 | extern void set_value_initialized (struct value *, int); | |
403 | ||
74bcbdf3 PA |
404 | /* Set COMPONENT's location as appropriate for a component of WHOLE |
405 | --- regardless of what kind of lvalue WHOLE is. */ | |
406 | extern void set_value_component_location (struct value *component, | |
0e03807e | 407 | const struct value *whole); |
74bcbdf3 | 408 | |
13bb5560 AC |
409 | /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a |
410 | single value might have multiple LVALs), this hacked interface is | |
411 | limited to just the first PIECE. Expect further change. */ | |
91294c83 AC |
412 | /* Type of value; either not an lval, or one of the various different |
413 | possible kinds of lval. */ | |
13bb5560 AC |
414 | extern enum lval_type *deprecated_value_lval_hack (struct value *); |
415 | #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val)) | |
91294c83 | 416 | |
a471c594 JK |
417 | /* Like VALUE_LVAL, except the parameter can be const. */ |
418 | extern enum lval_type value_lval_const (const struct value *value); | |
419 | ||
42ae5230 TT |
420 | /* If lval == lval_memory, return the address in the inferior. If |
421 | lval == lval_register, return the byte offset into the registers | |
422 | structure. Otherwise, return 0. The returned address | |
423 | includes the offset, if any. */ | |
de4127a3 | 424 | extern CORE_ADDR value_address (const struct value *); |
42ae5230 TT |
425 | |
426 | /* Like value_address, except the result does not include value's | |
427 | offset. */ | |
428 | extern CORE_ADDR value_raw_address (struct value *); | |
429 | ||
430 | /* Set the address of a value. */ | |
431 | extern void set_value_address (struct value *, CORE_ADDR); | |
91294c83 AC |
432 | |
433 | /* Pointer to internal variable. */ | |
13bb5560 AC |
434 | extern struct internalvar **deprecated_value_internalvar_hack (struct value *); |
435 | #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val)) | |
91294c83 AC |
436 | |
437 | /* Frame register value is relative to. This will be described in the | |
438 | lval enum above as "lval_register". */ | |
13bb5560 AC |
439 | extern struct frame_id *deprecated_value_frame_id_hack (struct value *); |
440 | #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val)) | |
91294c83 AC |
441 | |
442 | /* Register number if the value is from a register. */ | |
13bb5560 AC |
443 | extern short *deprecated_value_regnum_hack (struct value *); |
444 | #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val)) | |
445 | ||
a471c594 JK |
446 | /* Return value after lval_funcs->coerce_ref (after check_typedef). Return |
447 | NULL if lval_funcs->coerce_ref is not applicable for whatever reason. */ | |
448 | ||
449 | extern struct value *coerce_ref_if_computed (const struct value *arg); | |
450 | ||
dfcee124 AG |
451 | /* Setup a new value type and enclosing value type for dereferenced value VALUE. |
452 | ENC_TYPE is the new enclosing type that should be set. ORIGINAL_TYPE and | |
453 | ORIGINAL_VAL are the type and value of the original reference or pointer. | |
454 | ||
455 | Note, that VALUE is modified by this function. | |
456 | ||
457 | It is a common implementation for coerce_ref and value_ind. */ | |
458 | ||
459 | extern struct value * readjust_indirect_value_type (struct value *value, | |
460 | struct type *enc_type, | |
461 | struct type *original_type, | |
462 | struct value *original_val); | |
463 | ||
dea7f9ba | 464 | /* Convert a REF to the object referenced. */ |
c906108c | 465 | |
994b9211 | 466 | extern struct value *coerce_ref (struct value *value); |
c906108c SS |
467 | |
468 | /* If ARG is an array, convert it to a pointer. | |
c906108c SS |
469 | If ARG is a function, convert it to a function pointer. |
470 | ||
471 | References are dereferenced. */ | |
472 | ||
994b9211 | 473 | extern struct value *coerce_array (struct value *value); |
c906108c | 474 | |
8cf6f0b1 TT |
475 | /* Given a value, determine whether the bits starting at OFFSET and |
476 | extending for LENGTH bits are a synthetic pointer. */ | |
477 | ||
478 | extern int value_bits_synthetic_pointer (const struct value *value, | |
479 | int offset, int length); | |
480 | ||
4e07d55f PA |
481 | /* Given a value, determine whether the contents bytes starting at |
482 | OFFSET and extending for LENGTH bytes are available. This returns | |
483 | nonzero if all bytes in the given range are available, zero if any | |
484 | byte is unavailable. */ | |
485 | ||
486 | extern int value_bytes_available (const struct value *value, | |
487 | int offset, int length); | |
488 | ||
bdf22206 AB |
489 | /* Given a value, determine whether the contents bits starting at |
490 | OFFSET and extending for LENGTH bits are available. This returns | |
491 | nonzero if all bits in the given range are available, zero if any | |
492 | bit is unavailable. */ | |
493 | ||
494 | extern int value_bits_available (const struct value *value, | |
495 | int offset, int length); | |
496 | ||
ec0a52e1 PA |
497 | /* Like value_bytes_available, but return false if any byte in the |
498 | whole object is unavailable. */ | |
499 | extern int value_entirely_available (struct value *value); | |
500 | ||
6211c335 YQ |
501 | /* Like value_entirely_available, but return false if any byte in the |
502 | whole object is available. */ | |
503 | extern int value_entirely_unavailable (struct value *value); | |
504 | ||
4e07d55f PA |
505 | /* Mark VALUE's content bytes starting at OFFSET and extending for |
506 | LENGTH bytes as unavailable. */ | |
507 | ||
508 | extern void mark_value_bytes_unavailable (struct value *value, | |
509 | int offset, int length); | |
c8c1c22f | 510 | |
bdf22206 AB |
511 | /* Mark VALUE's content bits starting at OFFSET and extending for |
512 | LENGTH bits as unavailable. */ | |
513 | ||
514 | extern void mark_value_bits_unavailable (struct value *value, | |
515 | int offset, int length); | |
516 | ||
c8c1c22f | 517 | /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with |
cd24cfaa PA |
518 | LENGTH bytes of VAL2's contents starting at OFFSET2. |
519 | ||
520 | Note that "contents" refers to the whole value's contents | |
521 | (value_contents_all), without any embedded offset adjustment. For | |
522 | example, to compare a complete object value with itself, including | |
523 | its enclosing type chunk, you'd do: | |
524 | ||
525 | int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val))); | |
9a0dc9e3 PA |
526 | value_contents_eq (val, 0, val, 0, len); |
527 | ||
528 | Returns true iff the set of available/valid contents match. | |
529 | ||
530 | Optimized-out contents are equal to optimized-out contents, and are | |
531 | not equal to non-optimized-out contents. | |
cd24cfaa | 532 | |
9a0dc9e3 PA |
533 | Unavailable contente are equal to unavailable contents, and are not |
534 | equal to non-unavailable contents. | |
c8c1c22f | 535 | |
9a0dc9e3 PA |
536 | For example, if 'x's represent an unavailable byte, and 'V' and 'Z' |
537 | represent different available/valid bytes, in a value with length | |
538 | 16: | |
539 | ||
540 | offset: 0 4 8 12 16 | |
541 | contents: xxxxVVVVxxxxVVZZ | |
c8c1c22f PA |
542 | |
543 | then: | |
544 | ||
9a0dc9e3 PA |
545 | value_contents_eq(val, 0, val, 8, 6) => 1 |
546 | value_contents_eq(val, 0, val, 4, 4) => 0 | |
547 | value_contents_eq(val, 0, val, 8, 8) => 0 | |
548 | value_contents_eq(val, 4, val, 12, 2) => 1 | |
549 | value_contents_eq(val, 4, val, 12, 4) => 0 | |
550 | value_contents_eq(val, 3, val, 4, 4) => 0 | |
551 | ||
552 | If 'x's represent an unavailable byte, 'o' represents an optimized | |
553 | out byte, in a value with length 8: | |
554 | ||
555 | offset: 0 4 8 | |
556 | contents: xxxxoooo | |
557 | ||
558 | then: | |
559 | ||
560 | value_contents_eq(val, 0, val, 2, 2) => 1 | |
561 | value_contents_eq(val, 4, val, 6, 2) => 1 | |
562 | value_contents_eq(val, 0, val, 4, 4) => 0 | |
563 | ||
564 | We only know whether a value chunk is unavailable or optimized out | |
565 | if we've tried to read it. As this routine is used by printing | |
566 | routines, which may be printing values in the value history, long | |
567 | after the inferior is gone, it works with const values. Therefore, | |
568 | this routine must not be called with lazy values. */ | |
569 | ||
570 | extern int value_contents_eq (const struct value *val1, int offset1, | |
571 | const struct value *val2, int offset2, | |
572 | int length); | |
4e07d55f | 573 | |
3ae385af SM |
574 | /* Read LENGTH addressable memory units starting at MEMADDR into BUFFER, |
575 | which is (or will be copied to) VAL's contents buffer offset by | |
e6ca34fc PA |
576 | EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]). |
577 | Marks value contents ranges as unavailable if the corresponding | |
578 | memory is likewise unavailable. STACK indicates whether the memory | |
579 | is known to be stack memory. */ | |
580 | ||
424447ee | 581 | extern void read_value_memory (struct value *val, int embedded_offset, |
e6ca34fc PA |
582 | int stack, CORE_ADDR memaddr, |
583 | gdb_byte *buffer, size_t length); | |
584 | ||
8954db33 AB |
585 | /* Cast SCALAR_VALUE to the element type of VECTOR_TYPE, then replicate |
586 | into each element of a new vector value with VECTOR_TYPE. */ | |
587 | ||
588 | struct value *value_vector_widen (struct value *scalar_value, | |
589 | struct type *vector_type); | |
590 | ||
c906108c | 591 | \f |
c5aa993b | 592 | |
c906108c SS |
593 | #include "symtab.h" |
594 | #include "gdbtypes.h" | |
595 | #include "expression.h" | |
596 | ||
c906108c SS |
597 | struct frame_info; |
598 | struct fn_field; | |
c906108c | 599 | |
9cb709b6 TT |
600 | extern int print_address_demangle (const struct value_print_options *, |
601 | struct gdbarch *, CORE_ADDR, | |
602 | struct ui_file *, int); | |
c906108c | 603 | |
f23631e4 | 604 | extern LONGEST value_as_long (struct value *val); |
f23631e4 | 605 | extern DOUBLEST value_as_double (struct value *val); |
f23631e4 | 606 | extern CORE_ADDR value_as_address (struct value *val); |
c906108c | 607 | |
fc1a4b47 AC |
608 | extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr); |
609 | extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr, | |
66140c26 | 610 | int *invp); |
fc1a4b47 | 611 | extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr); |
5467c6c8 | 612 | |
8929e59d | 613 | extern LONGEST unpack_field_as_long (struct type *type, |
fc1a4b47 | 614 | const gdb_byte *valaddr, |
a14ed312 | 615 | int fieldno); |
5467c6c8 PA |
616 | extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr, |
617 | int embedded_offset, int fieldno, | |
618 | const struct value *val, LONGEST *result); | |
619 | ||
bb9d5f81 PP |
620 | extern void unpack_value_bitfield (struct value *dest_val, |
621 | int bitpos, int bitsize, | |
622 | const gdb_byte *valaddr, int embedded_offset, | |
623 | const struct value *val); | |
624 | ||
5467c6c8 PA |
625 | extern struct value *value_field_bitfield (struct type *type, int fieldno, |
626 | const gdb_byte *valaddr, | |
627 | int embedded_offset, | |
628 | const struct value *val); | |
c906108c | 629 | |
14d06750 DJ |
630 | extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num); |
631 | ||
f23631e4 | 632 | extern struct value *value_from_longest (struct type *type, LONGEST num); |
595939de | 633 | extern struct value *value_from_ulongest (struct type *type, ULONGEST num); |
f23631e4 | 634 | extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr); |
f23631e4 | 635 | extern struct value *value_from_double (struct type *type, DOUBLEST num); |
4ef30785 TJB |
636 | extern struct value *value_from_decfloat (struct type *type, |
637 | const gdb_byte *decbytes); | |
e799154c | 638 | extern struct value *value_from_history_ref (const char *, const char **); |
0f71a2f6 | 639 | |
00a4c844 AC |
640 | extern struct value *value_at (struct type *type, CORE_ADDR addr); |
641 | extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr); | |
c906108c | 642 | |
012370f6 TT |
643 | extern struct value *value_from_contents_and_address_unresolved |
644 | (struct type *, const gdb_byte *, CORE_ADDR); | |
8acb6b92 TT |
645 | extern struct value *value_from_contents_and_address (struct type *, |
646 | const gdb_byte *, | |
647 | CORE_ADDR); | |
8a9b8146 | 648 | extern struct value *value_from_contents (struct type *, const gdb_byte *); |
8acb6b92 | 649 | |
2ed3c037 UW |
650 | extern struct value *default_value_from_register (struct gdbarch *gdbarch, |
651 | struct type *type, | |
9acbedc0 | 652 | int regnum, |
2ed3c037 | 653 | struct frame_id frame_id); |
9acbedc0 | 654 | |
b56d6f31 JB |
655 | extern void read_frame_register_value (struct value *value, |
656 | struct frame_info *frame); | |
657 | ||
f23631e4 AC |
658 | extern struct value *value_from_register (struct type *type, int regnum, |
659 | struct frame_info *frame); | |
c906108c | 660 | |
2ed3c037 | 661 | extern CORE_ADDR address_from_register (int regnum, |
0b2b0195 UW |
662 | struct frame_info *frame); |
663 | ||
9df2fbc4 PM |
664 | extern struct value *value_of_variable (struct symbol *var, |
665 | const struct block *b); | |
c906108c | 666 | |
270140bd TT |
667 | extern struct value *address_of_variable (struct symbol *var, |
668 | const struct block *b); | |
61212c0f | 669 | |
89f5065b | 670 | extern struct value *value_of_register (int regnum, struct frame_info *frame); |
c906108c | 671 | |
9214ee5f DJ |
672 | struct value *value_of_register_lazy (struct frame_info *frame, int regnum); |
673 | ||
a14ed312 | 674 | extern int symbol_read_needs_frame (struct symbol *); |
c906108c | 675 | |
f23631e4 | 676 | extern struct value *read_var_value (struct symbol *var, |
63e43d3a | 677 | const struct block *var_block, |
f23631e4 | 678 | struct frame_info *frame); |
c906108c | 679 | |
a5ee536b | 680 | extern struct value *default_read_var_value (struct symbol *var, |
63e43d3a | 681 | const struct block *var_block, |
a5ee536b JB |
682 | struct frame_info *frame); |
683 | ||
f23631e4 | 684 | extern struct value *allocate_value (struct type *type); |
3e3d7139 | 685 | extern struct value *allocate_value_lazy (struct type *type); |
39d37385 PA |
686 | extern void value_contents_copy (struct value *dst, int dst_offset, |
687 | struct value *src, int src_offset, | |
688 | int length); | |
689 | extern void value_contents_copy_raw (struct value *dst, int dst_offset, | |
690 | struct value *src, int src_offset, | |
691 | int length); | |
c906108c | 692 | |
f23631e4 | 693 | extern struct value *allocate_repeat_value (struct type *type, int count); |
c906108c | 694 | |
f23631e4 | 695 | extern struct value *value_mark (void); |
c906108c | 696 | |
f23631e4 | 697 | extern void value_free_to_mark (struct value *mark); |
c906108c | 698 | |
e3a3797e | 699 | extern struct value *value_cstring (const char *ptr, ssize_t len, |
3b7538c0 | 700 | struct type *char_type); |
7cc3f8e2 | 701 | extern struct value *value_string (const char *ptr, ssize_t len, |
3b7538c0 | 702 | struct type *char_type); |
c906108c | 703 | |
f23631e4 | 704 | extern struct value *value_array (int lowbound, int highbound, |
89f5065b | 705 | struct value **elemvec); |
c906108c | 706 | |
f23631e4 | 707 | extern struct value *value_concat (struct value *arg1, struct value *arg2); |
c906108c | 708 | |
f23631e4 AC |
709 | extern struct value *value_binop (struct value *arg1, struct value *arg2, |
710 | enum exp_opcode op); | |
c906108c | 711 | |
2497b498 | 712 | extern struct value *value_ptradd (struct value *arg1, LONGEST arg2); |
89eef114 UW |
713 | |
714 | extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2); | |
c906108c | 715 | |
63092375 DJ |
716 | extern int value_must_coerce_to_target (struct value *arg1); |
717 | ||
718 | extern struct value *value_coerce_to_target (struct value *arg1); | |
719 | ||
f23631e4 | 720 | extern struct value *value_coerce_array (struct value *arg1); |
c906108c | 721 | |
f23631e4 | 722 | extern struct value *value_coerce_function (struct value *arg1); |
c906108c | 723 | |
f23631e4 | 724 | extern struct value *value_ind (struct value *arg1); |
c906108c | 725 | |
f23631e4 | 726 | extern struct value *value_addr (struct value *arg1); |
c906108c | 727 | |
fb933624 DJ |
728 | extern struct value *value_ref (struct value *arg1); |
729 | ||
89f5065b AC |
730 | extern struct value *value_assign (struct value *toval, |
731 | struct value *fromval); | |
c906108c | 732 | |
36e9969c NS |
733 | extern struct value *value_pos (struct value *arg1); |
734 | ||
f23631e4 | 735 | extern struct value *value_neg (struct value *arg1); |
c906108c | 736 | |
f23631e4 | 737 | extern struct value *value_complement (struct value *arg1); |
c906108c | 738 | |
f23631e4 AC |
739 | extern struct value *value_struct_elt (struct value **argp, |
740 | struct value **args, | |
714f19d5 TT |
741 | const char *name, int *static_memfuncp, |
742 | const char *err); | |
c906108c | 743 | |
b5b08fb4 SC |
744 | extern struct value *value_struct_elt_bitpos (struct value **argp, |
745 | int bitpos, | |
746 | struct type *field_type, | |
747 | const char *err); | |
748 | ||
79c2c32d | 749 | extern struct value *value_aggregate_elt (struct type *curtype, |
c848d642 | 750 | const char *name, |
072bba3b | 751 | struct type *expect_type, |
0d5de010 DJ |
752 | int want_address, |
753 | enum noside noside); | |
c906108c | 754 | |
f23631e4 | 755 | extern struct value *value_static_field (struct type *type, int fieldno); |
c906108c | 756 | |
4c3376c8 SW |
757 | enum oload_search_type { NON_METHOD, METHOD, BOTH }; |
758 | ||
da096638 | 759 | extern int find_overload_match (struct value **args, int nargs, |
4c3376c8 | 760 | const char *name, |
28c64fc2 | 761 | enum oload_search_type method, |
7f8c9282 | 762 | struct value **objp, struct symbol *fsym, |
f23631e4 | 763 | struct value **valp, struct symbol **symp, |
e66d4446 SC |
764 | int *staticp, const int no_adl, |
765 | enum noside noside); | |
c906108c | 766 | |
f23631e4 | 767 | extern struct value *value_field (struct value *arg1, int fieldno); |
c906108c | 768 | |
f23631e4 AC |
769 | extern struct value *value_primitive_field (struct value *arg1, int offset, |
770 | int fieldno, | |
771 | struct type *arg_type); | |
c906108c | 772 | |
c906108c | 773 | |
dfcee124 AG |
774 | extern struct type *value_rtti_indirect_type (struct value *, int *, int *, |
775 | int *); | |
c906108c | 776 | |
f23631e4 AC |
777 | extern struct value *value_full_object (struct value *, struct type *, int, |
778 | int, int); | |
c906108c | 779 | |
b1af9e97 | 780 | extern struct value *value_cast_pointers (struct type *, struct value *, int); |
fb933624 | 781 | |
f23631e4 | 782 | extern struct value *value_cast (struct type *type, struct value *arg2); |
c906108c | 783 | |
4e8f195d TT |
784 | extern struct value *value_reinterpret_cast (struct type *type, |
785 | struct value *arg); | |
786 | ||
787 | extern struct value *value_dynamic_cast (struct type *type, struct value *arg); | |
788 | ||
f23631e4 | 789 | extern struct value *value_zero (struct type *type, enum lval_type lv); |
c906108c | 790 | |
18a46dbe | 791 | extern struct value *value_one (struct type *type); |
301f0ecf | 792 | |
f23631e4 | 793 | extern struct value *value_repeat (struct value *arg1, int count); |
c906108c | 794 | |
2497b498 | 795 | extern struct value *value_subscript (struct value *array, LONGEST index); |
c906108c | 796 | |
afc05acb UW |
797 | extern struct value *value_bitstring_subscript (struct type *type, |
798 | struct value *bitstring, | |
2497b498 | 799 | LONGEST index); |
afc05acb | 800 | |
5fe830e4 AC |
801 | extern struct value *register_value_being_returned (struct type *valtype, |
802 | struct regcache *retbuf); | |
c906108c | 803 | |
fbb06eb1 | 804 | extern int value_in (struct value *element, struct value *set); |
c906108c | 805 | |
fc1a4b47 | 806 | extern int value_bit_index (struct type *type, const gdb_byte *addr, |
c84141d6 | 807 | int index); |
c906108c | 808 | |
bbfdfe1c DM |
809 | extern enum return_value_convention |
810 | struct_return_convention (struct gdbarch *gdbarch, struct value *function, | |
811 | struct type *value_type); | |
812 | ||
d80b854b | 813 | extern int using_struct_return (struct gdbarch *gdbarch, |
6a3a010b | 814 | struct value *function, |
c055b101 | 815 | struct type *value_type); |
c906108c | 816 | |
f23631e4 | 817 | extern struct value *evaluate_expression (struct expression *exp); |
c906108c | 818 | |
f23631e4 | 819 | extern struct value *evaluate_type (struct expression *exp); |
c906108c | 820 | |
4b27a620 JB |
821 | extern struct value *evaluate_subexp (struct type *expect_type, |
822 | struct expression *exp, | |
823 | int *pos, enum noside noside); | |
824 | ||
65d12d83 TT |
825 | extern struct value *evaluate_subexpression_type (struct expression *exp, |
826 | int subexp); | |
827 | ||
0cf6dd15 TJB |
828 | extern void fetch_subexp_value (struct expression *exp, int *pc, |
829 | struct value **valp, struct value **resultp, | |
3a1115a0 TT |
830 | struct value **val_chain, |
831 | int preserve_errors); | |
0cf6dd15 | 832 | |
65d12d83 TT |
833 | extern char *extract_field_op (struct expression *exp, int *subexp); |
834 | ||
f23631e4 AC |
835 | extern struct value *evaluate_subexp_with_coercion (struct expression *, |
836 | int *, enum noside); | |
c906108c | 837 | |
bbc13ae3 | 838 | extern struct value *parse_and_eval (const char *exp); |
c906108c | 839 | |
bbc13ae3 | 840 | extern struct value *parse_to_comma_and_eval (const char **expp); |
c906108c | 841 | |
a14ed312 | 842 | extern struct type *parse_and_eval_type (char *p, int length); |
c906108c | 843 | |
bbc13ae3 | 844 | extern CORE_ADDR parse_and_eval_address (const char *exp); |
c906108c | 845 | |
a1b8c4cc | 846 | extern LONGEST parse_and_eval_long (const char *exp); |
bb518678 | 847 | |
4066e646 UW |
848 | extern void unop_promote (const struct language_defn *language, |
849 | struct gdbarch *gdbarch, | |
850 | struct value **arg1); | |
851 | ||
852 | extern void binop_promote (const struct language_defn *language, | |
853 | struct gdbarch *gdbarch, | |
854 | struct value **arg1, struct value **arg2); | |
855 | ||
f23631e4 | 856 | extern struct value *access_value_history (int num); |
c906108c | 857 | |
78267919 UW |
858 | extern struct value *value_of_internalvar (struct gdbarch *gdbarch, |
859 | struct internalvar *var); | |
c906108c | 860 | |
4fa62494 UW |
861 | extern int get_internalvar_integer (struct internalvar *var, LONGEST *l); |
862 | ||
f23631e4 | 863 | extern void set_internalvar (struct internalvar *var, struct value *val); |
c906108c | 864 | |
4fa62494 UW |
865 | extern void set_internalvar_integer (struct internalvar *var, LONGEST l); |
866 | ||
78267919 UW |
867 | extern void set_internalvar_string (struct internalvar *var, |
868 | const char *string); | |
869 | ||
4fa62494 UW |
870 | extern void clear_internalvar (struct internalvar *var); |
871 | ||
a14ed312 KB |
872 | extern void set_internalvar_component (struct internalvar *var, |
873 | int offset, | |
874 | int bitpos, int bitsize, | |
f23631e4 | 875 | struct value *newvalue); |
c906108c | 876 | |
bc3b79fd | 877 | extern struct internalvar *lookup_only_internalvar (const char *name); |
c4a3d09a | 878 | |
bc3b79fd | 879 | extern struct internalvar *create_internalvar (const char *name); |
c4a3d09a | 880 | |
d55637df TT |
881 | extern VEC (char_ptr) *complete_internalvar (const char *name); |
882 | ||
22d2b532 SDJ |
883 | /* An internalvar can be dynamically computed by supplying a vector of |
884 | function pointers to perform various operations. */ | |
885 | ||
886 | struct internalvar_funcs | |
887 | { | |
888 | /* Compute the value of the variable. The DATA argument passed to | |
889 | the function is the same argument that was passed to | |
890 | `create_internalvar_type_lazy'. */ | |
891 | ||
892 | struct value *(*make_value) (struct gdbarch *arch, | |
893 | struct internalvar *var, | |
894 | void *data); | |
895 | ||
896 | /* Update the agent expression EXPR with bytecode to compute the | |
897 | value. VALUE is the agent value we are updating. The DATA | |
898 | argument passed to this function is the same argument that was | |
899 | passed to `create_internalvar_type_lazy'. If this pointer is | |
900 | NULL, then the internalvar cannot be compiled to an agent | |
901 | expression. */ | |
902 | ||
903 | void (*compile_to_ax) (struct internalvar *var, | |
904 | struct agent_expr *expr, | |
905 | struct axs_value *value, | |
906 | void *data); | |
907 | ||
908 | /* If non-NULL, this is called to destroy DATA. The DATA argument | |
909 | passed to this function is the same argument that was passed to | |
910 | `create_internalvar_type_lazy'. */ | |
911 | ||
912 | void (*destroy) (void *data); | |
913 | }; | |
914 | ||
73033f12 SDJ |
915 | extern struct internalvar *create_internalvar_type_lazy (const char *name, |
916 | const struct internalvar_funcs *funcs, | |
917 | void *data); | |
22d2b532 SDJ |
918 | |
919 | /* Compile an internal variable to an agent expression. VAR is the | |
920 | variable to compile; EXPR and VALUE are the agent expression we are | |
921 | updating. This will return 0 if there is no known way to compile | |
922 | VAR, and 1 if VAR was successfully compiled. It may also throw an | |
923 | exception on error. */ | |
924 | ||
925 | extern int compile_internalvar_to_ax (struct internalvar *var, | |
926 | struct agent_expr *expr, | |
927 | struct axs_value *value); | |
4aa995e1 | 928 | |
bc3b79fd | 929 | extern struct internalvar *lookup_internalvar (const char *name); |
c906108c | 930 | |
f23631e4 | 931 | extern int value_equal (struct value *arg1, struct value *arg2); |
c906108c | 932 | |
218d2fc6 TJB |
933 | extern int value_equal_contents (struct value *arg1, struct value *arg2); |
934 | ||
f23631e4 | 935 | extern int value_less (struct value *arg1, struct value *arg2); |
c906108c | 936 | |
f23631e4 | 937 | extern int value_logical_not (struct value *arg1); |
c906108c SS |
938 | |
939 | /* C++ */ | |
940 | ||
85bc8cb7 JK |
941 | extern struct value *value_of_this (const struct language_defn *lang); |
942 | ||
943 | extern struct value *value_of_this_silent (const struct language_defn *lang); | |
c906108c | 944 | |
f23631e4 AC |
945 | extern struct value *value_x_binop (struct value *arg1, struct value *arg2, |
946 | enum exp_opcode op, | |
947 | enum exp_opcode otherop, | |
948 | enum noside noside); | |
c906108c | 949 | |
f23631e4 AC |
950 | extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op, |
951 | enum noside noside); | |
c906108c | 952 | |
89f5065b | 953 | extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f, |
f23631e4 | 954 | int j, struct type *type, int offset); |
c906108c | 955 | |
be636754 PA |
956 | extern int binop_types_user_defined_p (enum exp_opcode op, |
957 | struct type *type1, | |
958 | struct type *type2); | |
959 | ||
f23631e4 AC |
960 | extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1, |
961 | struct value *arg2); | |
c906108c | 962 | |
f23631e4 | 963 | extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1); |
c906108c | 964 | |
d8228535 | 965 | extern int destructor_name_p (const char *name, struct type *type); |
c906108c | 966 | |
828d3400 DJ |
967 | extern void value_incref (struct value *val); |
968 | ||
3e3d7139 | 969 | extern void value_free (struct value *val); |
c906108c | 970 | |
a14ed312 | 971 | extern void free_all_values (void); |
c906108c | 972 | |
0cf6dd15 TJB |
973 | extern void free_value_chain (struct value *v); |
974 | ||
f23631e4 | 975 | extern void release_value (struct value *val); |
c906108c | 976 | |
e848a8a5 TT |
977 | extern void release_value_or_incref (struct value *val); |
978 | ||
f23631e4 | 979 | extern int record_latest_value (struct value *val); |
c906108c | 980 | |
50810684 UW |
981 | extern void modify_field (struct type *type, gdb_byte *addr, |
982 | LONGEST fieldval, int bitpos, int bitsize); | |
c906108c | 983 | |
0d5cff50 | 984 | extern void type_print (struct type *type, const char *varstring, |
89f5065b | 985 | struct ui_file *stream, int show); |
c906108c | 986 | |
ae6a3a4c TJB |
987 | extern char *type_to_string (struct type *type); |
988 | ||
fc1a4b47 AC |
989 | extern gdb_byte *baseclass_addr (struct type *type, int index, |
990 | gdb_byte *valaddr, | |
8929e59d | 991 | struct value **valuep, int *errp); |
c906108c | 992 | |
89f5065b | 993 | extern void print_longest (struct ui_file *stream, int format, |
d9fcf2fb | 994 | int use_local, LONGEST val); |
c906108c | 995 | |
fc1a4b47 | 996 | extern void print_floating (const gdb_byte *valaddr, struct type *type, |
89f5065b | 997 | struct ui_file *stream); |
c906108c | 998 | |
7678ef8f TJB |
999 | extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type, |
1000 | struct ui_file *stream); | |
1001 | ||
8e069a98 TT |
1002 | extern void value_print (struct value *val, struct ui_file *stream, |
1003 | const struct value_print_options *options); | |
c906108c | 1004 | |
f23631e4 AC |
1005 | extern void value_print_array_elements (struct value *val, |
1006 | struct ui_file *stream, int format, | |
2a998fc0 | 1007 | enum val_prettyformat pretty); |
c906108c | 1008 | |
f23631e4 | 1009 | extern struct value *value_release_to_mark (struct value *mark); |
c906108c | 1010 | |
35c0084b TT |
1011 | extern void val_print (struct type *type, const gdb_byte *valaddr, |
1012 | int embedded_offset, CORE_ADDR address, | |
1013 | struct ui_file *stream, int recurse, | |
1014 | const struct value *val, | |
1015 | const struct value_print_options *options, | |
1016 | const struct language_defn *language); | |
c906108c | 1017 | |
a1f5dd1b TT |
1018 | extern void common_val_print (struct value *val, |
1019 | struct ui_file *stream, int recurse, | |
1020 | const struct value_print_options *options, | |
1021 | const struct language_defn *language); | |
806048c6 | 1022 | |
09ca9e2e TT |
1023 | extern int val_print_string (struct type *elttype, const char *encoding, |
1024 | CORE_ADDR addr, int len, | |
79a45b7d TT |
1025 | struct ui_file *stream, |
1026 | const struct value_print_options *options); | |
c906108c | 1027 | |
aad95b57 TT |
1028 | extern void print_variable_and_value (const char *name, |
1029 | struct symbol *var, | |
1030 | struct frame_info *frame, | |
1031 | struct ui_file *stream, | |
1032 | int indent); | |
c906108c | 1033 | |
89f5065b AC |
1034 | extern void typedef_print (struct type *type, struct symbol *news, |
1035 | struct ui_file *stream); | |
c906108c | 1036 | |
a14ed312 | 1037 | extern char *internalvar_name (struct internalvar *var); |
c906108c | 1038 | |
ae5a43e0 | 1039 | extern void preserve_values (struct objfile *); |
c906108c SS |
1040 | |
1041 | /* From values.c */ | |
1042 | ||
f23631e4 | 1043 | extern struct value *value_copy (struct value *); |
c906108c | 1044 | |
c37f7098 KW |
1045 | extern struct value *value_non_lval (struct value *); |
1046 | ||
6c659fc2 SC |
1047 | extern void value_force_lval (struct value *, CORE_ADDR); |
1048 | ||
4c082a81 SC |
1049 | extern struct value *make_cv_value (int, int, struct value *); |
1050 | ||
4e7a5ef5 TT |
1051 | extern void preserve_one_value (struct value *, struct objfile *, htab_t); |
1052 | ||
c906108c SS |
1053 | /* From valops.c */ |
1054 | ||
f23631e4 | 1055 | extern struct value *varying_to_slice (struct value *); |
c906108c | 1056 | |
f23631e4 | 1057 | extern struct value *value_slice (struct value *, int, int); |
c906108c | 1058 | |
f23631e4 AC |
1059 | extern struct value *value_literal_complex (struct value *, struct value *, |
1060 | struct type *); | |
c906108c | 1061 | |
3e3b026f UW |
1062 | extern struct value *find_function_in_inferior (const char *, |
1063 | struct objfile **); | |
c906108c | 1064 | |
f23631e4 | 1065 | extern struct value *value_allocate_space_in_inferior (int); |
c906108c | 1066 | |
2497b498 UW |
1067 | extern struct value *value_subscripted_rvalue (struct value *array, |
1068 | LONGEST index, int lowerbound); | |
bc3b79fd TJB |
1069 | |
1070 | /* User function handler. */ | |
1071 | ||
d452c4bc UW |
1072 | typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch, |
1073 | const struct language_defn *language, | |
1074 | void *cookie, | |
bc3b79fd TJB |
1075 | int argc, |
1076 | struct value **argv); | |
1077 | ||
1078 | void add_internal_function (const char *name, const char *doc, | |
1079 | internal_function_fn handler, | |
1080 | void *cookie); | |
1081 | ||
d452c4bc UW |
1082 | struct value *call_internal_function (struct gdbarch *gdbarch, |
1083 | const struct language_defn *language, | |
1084 | struct value *function, | |
bc3b79fd TJB |
1085 | int argc, struct value **argv); |
1086 | ||
1087 | char *value_internal_function_name (struct value *); | |
1088 | ||
e81e7f5e SC |
1089 | extern struct value *value_of_xmethod (struct xmethod_worker *); |
1090 | ||
2ce1cdbf DE |
1091 | extern struct type *result_type_of_xmethod (struct value *method, |
1092 | int argc, struct value **argv); | |
1093 | ||
1094 | extern struct value *call_xmethod (struct value *method, | |
1095 | int argc, struct value **argv); | |
e81e7f5e | 1096 | |
c5aa993b | 1097 | #endif /* !defined (VALUE_H) */ |