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1 : : /* dwarf2out.h - Various declarations for functions found in dwarf2out.cc
2 : : Copyright (C) 1998-2024 Free Software Foundation, Inc.
3 : :
4 : : This file is part of GCC.
5 : :
6 : : GCC is free software; you can redistribute it and/or modify it under
7 : : the terms of the GNU General Public License as published by the Free
8 : : Software Foundation; either version 3, or (at your option) any later
9 : : version.
10 : :
11 : : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 : : WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 : : for more details.
15 : :
16 : : You should have received a copy of the GNU General Public License
17 : : along with GCC; see the file COPYING3. If not see
18 : : <http://www.gnu.org/licenses/>. */
19 : :
20 : : #ifndef GCC_DWARF2OUT_H
21 : : #define GCC_DWARF2OUT_H 1
22 : :
23 : : #include "dwarf2.h" /* ??? Remove this once only used by dwarf2foo.c. */
24 : :
25 : : typedef struct die_struct *dw_die_ref;
26 : : typedef const struct die_struct *const_dw_die_ref;
27 : :
28 : : typedef struct dw_val_node *dw_val_ref;
29 : : typedef struct dw_cfi_node *dw_cfi_ref;
30 : : typedef struct dw_loc_descr_node *dw_loc_descr_ref;
31 : : typedef struct dw_loc_list_struct *dw_loc_list_ref;
32 : : typedef struct dw_discr_list_node *dw_discr_list_ref;
33 : : typedef struct dw_wide_int *dw_wide_int_ptr;
34 : :
35 : :
36 : : /* Call frames are described using a sequence of Call Frame
37 : : Information instructions. The register number, offset
38 : : and address fields are provided as possible operands;
39 : : their use is selected by the opcode field. */
40 : : enum dw_cfi_oprnd_type: int {
41 : : dw_cfi_oprnd_unused,
42 : : dw_cfi_oprnd_reg_num,
43 : : dw_cfi_oprnd_offset,
44 : : dw_cfi_oprnd_addr,
45 : : dw_cfi_oprnd_loc,
46 : : dw_cfi_oprnd_cfa_loc
47 : : };
48 : :
49 : : typedef union GTY(()) {
50 : : unsigned int GTY ((tag ("dw_cfi_oprnd_reg_num"))) dw_cfi_reg_num;
51 : : HOST_WIDE_INT GTY ((tag ("dw_cfi_oprnd_offset"))) dw_cfi_offset;
52 : : const char * GTY ((tag ("dw_cfi_oprnd_addr"))) dw_cfi_addr;
53 : : struct dw_loc_descr_node * GTY ((tag ("dw_cfi_oprnd_loc"))) dw_cfi_loc;
54 : : struct dw_cfa_location * GTY ((tag ("dw_cfi_oprnd_cfa_loc")))
55 : : dw_cfi_cfa_loc;
56 : : } dw_cfi_oprnd;
57 : :
58 : : struct GTY(()) dw_cfi_node {
59 : : enum dwarf_call_frame_info dw_cfi_opc;
60 : : dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd1_desc (%1.dw_cfi_opc)")))
61 : : dw_cfi_oprnd1;
62 : : dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd2_desc (%1.dw_cfi_opc)")))
63 : : dw_cfi_oprnd2;
64 : : };
65 : :
66 : :
67 : : typedef vec<dw_cfi_ref, va_gc> *cfi_vec;
68 : :
69 : : typedef struct dw_fde_node *dw_fde_ref;
70 : :
71 : : /* All call frame descriptions (FDE's) in the GCC generated DWARF
72 : : refer to a single Common Information Entry (CIE), defined at
73 : : the beginning of the .debug_frame section. This use of a single
74 : : CIE obviates the need to keep track of multiple CIE's
75 : : in the DWARF generation routines below. */
76 : :
77 : : struct GTY(()) dw_fde_node {
78 : : tree decl;
79 : : const char *dw_fde_begin;
80 : : const char *dw_fde_current_label;
81 : : const char *dw_fde_end;
82 : : const char *dw_fde_vms_end_prologue;
83 : : const char *dw_fde_vms_begin_epilogue;
84 : : const char *dw_fde_second_begin;
85 : : const char *dw_fde_second_end;
86 : : cfi_vec dw_fde_cfi;
87 : : int dw_fde_switch_cfi_index; /* Last CFI before switching sections. */
88 : : HOST_WIDE_INT stack_realignment;
89 : :
90 : : unsigned funcdef_number;
91 : : unsigned fde_index;
92 : :
93 : : /* Dynamic realign argument pointer register. */
94 : : unsigned int drap_reg;
95 : : /* Virtual dynamic realign argument pointer register. */
96 : : unsigned int vdrap_reg;
97 : : /* These 3 flags are copied from rtl_data in function.h. */
98 : : unsigned all_throwers_are_sibcalls : 1;
99 : : unsigned uses_eh_lsda : 1;
100 : : unsigned nothrow : 1;
101 : : /* Whether we did stack realign in this call frame. */
102 : : unsigned stack_realign : 1;
103 : : /* Whether dynamic realign argument pointer register has been saved. */
104 : : unsigned drap_reg_saved: 1;
105 : : /* True iff dw_fde_begin label is in text_section or cold_text_section. */
106 : : unsigned in_std_section : 1;
107 : : /* True iff dw_fde_second_begin label is in text_section or
108 : : cold_text_section. */
109 : : unsigned second_in_std_section : 1;
110 : : /* True if Rule 18 described in dwarf2cfi.cc is in action, i.e. for dynamic
111 : : stack realignment in between pushing of hard frame pointer to stack
112 : : and setting hard frame pointer to stack pointer. The register save for
113 : : hard frame pointer register should be emitted only on the latter
114 : : instruction. */
115 : : unsigned rule18 : 1;
116 : : /* True if this function is to be ignored by debugger. */
117 : : unsigned ignored_debug : 1;
118 : : };
119 : :
120 : :
121 : : /* This represents a register, in DWARF_FRAME_REGNUM space, for use in CFA
122 : : definitions and expressions.
123 : : Most architectures only need a single register number, but some (amdgcn)
124 : : have pointers that span multiple registers. DWARF permits arbitrary
125 : : register sets but existing use-cases only require contiguous register
126 : : sets, as represented here. */
127 : : struct GTY(()) cfa_reg {
128 : : unsigned int reg;
129 : : unsigned short span;
130 : : unsigned short span_width; /* A.K.A. register mode size. */
131 : :
132 : 3680634 : cfa_reg& set_by_dwreg (unsigned int r)
133 : : {
134 : 3680634 : reg = r;
135 : 3680634 : span = 1;
136 : 3680634 : span_width = 0; /* Unknown size (permitted when span == 1). */
137 : 3680634 : return *this;
138 : : }
139 : :
140 : 220686431 : bool operator== (const cfa_reg &other) const
141 : : {
142 : 183619182 : return (reg == other.reg && span == other.span
143 : 404305613 : && (span_width == other.span_width
144 : 0 : || (span == 1
145 : 0 : && (span_width == 0 || other.span_width == 0))));
146 : : }
147 : :
148 : 27428 : bool operator!= (const cfa_reg &other) const
149 : : {
150 : 20571 : return !(*this == other);
151 : : }
152 : : };
153 : :
154 : : /* This is how we define the location of the CFA. We use to handle it
155 : : as REG + OFFSET all the time, but now it can be more complex.
156 : : It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET.
157 : : Instead of passing around REG and OFFSET, we pass a copy
158 : : of this structure. */
159 : : struct GTY(()) dw_cfa_location {
160 : : poly_int64 offset;
161 : : poly_int64 base_offset;
162 : : /* REG is in DWARF_FRAME_REGNUM space, *not* normal REGNO space. */
163 : : struct cfa_reg reg;
164 : : BOOL_BITFIELD indirect : 1; /* 1 if CFA is accessed via a dereference. */
165 : : BOOL_BITFIELD in_use : 1; /* 1 if a saved cfa is stored here. */
166 : : };
167 : :
168 : :
169 : : /* Each DIE may have a series of attribute/value pairs. Values
170 : : can take on several forms. The forms that are used in this
171 : : implementation are listed below. */
172 : :
173 : : enum dw_val_class
174 : : {
175 : : dw_val_class_none,
176 : : dw_val_class_addr,
177 : : dw_val_class_offset,
178 : : dw_val_class_loc,
179 : : dw_val_class_loc_list,
180 : : dw_val_class_range_list,
181 : : dw_val_class_const,
182 : : dw_val_class_unsigned_const,
183 : : dw_val_class_const_double,
184 : : dw_val_class_wide_int,
185 : : dw_val_class_vec,
186 : : dw_val_class_flag,
187 : : dw_val_class_die_ref,
188 : : dw_val_class_fde_ref,
189 : : dw_val_class_lbl_id,
190 : : dw_val_class_lineptr,
191 : : dw_val_class_str,
192 : : dw_val_class_macptr,
193 : : dw_val_class_loclistsptr,
194 : : dw_val_class_file,
195 : : dw_val_class_data8,
196 : : dw_val_class_decl_ref,
197 : : dw_val_class_vms_delta,
198 : : dw_val_class_high_pc,
199 : : dw_val_class_discr_value,
200 : : dw_val_class_discr_list,
201 : : dw_val_class_const_implicit,
202 : : dw_val_class_unsigned_const_implicit,
203 : : dw_val_class_file_implicit,
204 : : dw_val_class_view_list,
205 : : dw_val_class_symview
206 : : };
207 : :
208 : : /* Describe a floating point constant value, or a vector constant value. */
209 : :
210 : : struct GTY(()) dw_vec_const {
211 : : void * GTY((atomic)) array;
212 : : unsigned length;
213 : : unsigned elt_size;
214 : : };
215 : :
216 : : /* Describe a single value that a discriminant can match.
217 : :
218 : : Discriminants (in the "record variant part" meaning) are scalars.
219 : : dw_discr_list_ref and dw_discr_value are a mean to describe a set of
220 : : discriminant values that are matched by a particular variant.
221 : :
222 : : Discriminants can be signed or unsigned scalars, and can be discriminants
223 : : values. Both have to be consistent, though. */
224 : :
225 : : struct GTY(()) dw_discr_value {
226 : : int pos; /* Whether the discriminant value is positive (unsigned). */
227 : : union
228 : : {
229 : : HOST_WIDE_INT GTY ((tag ("0"))) sval;
230 : : unsigned HOST_WIDE_INT GTY ((tag ("1"))) uval;
231 : : }
232 : : GTY ((desc ("%1.pos"))) v;
233 : : };
234 : :
235 : : struct addr_table_entry;
236 : :
237 : : typedef unsigned int var_loc_view;
238 : :
239 : : /* Location lists are ranges + location descriptions for that range,
240 : : so you can track variables that are in different places over
241 : : their entire life. */
242 : : typedef struct GTY(()) dw_loc_list_struct {
243 : : dw_loc_list_ref dw_loc_next;
244 : : const char *begin; /* Label and addr_entry for start of range */
245 : : addr_table_entry *begin_entry;
246 : : const char *end; /* Label for end of range */
247 : : addr_table_entry *end_entry;
248 : : char *ll_symbol; /* Label for beginning of location list.
249 : : Only on head of list. */
250 : : char *vl_symbol; /* Label for beginning of view list. Ditto. */
251 : : const char *section; /* Section this loclist is relative to */
252 : : dw_loc_descr_ref expr;
253 : : var_loc_view vbegin, vend;
254 : : hashval_t hash;
255 : : /* True if all addresses in this and subsequent lists are known to be
256 : : resolved. */
257 : : bool resolved_addr;
258 : : /* True if this list has been replaced by dw_loc_next. */
259 : : bool replaced;
260 : : /* True if it has been emitted into .debug_loc* / .debug_loclists*
261 : : section. */
262 : : unsigned char emitted : 1;
263 : : /* True if hash field is index rather than hash value. */
264 : : unsigned char num_assigned : 1;
265 : : /* True if .debug_loclists.dwo offset has been emitted for it already. */
266 : : unsigned char offset_emitted : 1;
267 : : /* True if note_variable_value_in_expr has been called on it. */
268 : : unsigned char noted_variable_value : 1;
269 : : /* True if the range should be emitted even if begin and end
270 : : are the same. */
271 : : bool force;
272 : : } dw_loc_list_node;
273 : :
274 : : /* The dw_val_node describes an attribute's value, as it is
275 : : represented internally. */
276 : :
277 : : struct GTY(()) dw_val_node {
278 : : enum dw_val_class val_class;
279 : : struct addr_table_entry * GTY(()) val_entry;
280 : : union dw_val_struct_union
281 : : {
282 : : rtx GTY ((tag ("dw_val_class_addr"))) val_addr;
283 : : unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_offset"))) val_offset;
284 : : dw_loc_list_ref GTY ((tag ("dw_val_class_loc_list"))) val_loc_list;
285 : : dw_die_ref GTY ((tag ("dw_val_class_view_list"))) val_view_list;
286 : : dw_loc_descr_ref GTY ((tag ("dw_val_class_loc"))) val_loc;
287 : : HOST_WIDE_INT GTY ((default)) val_int;
288 : : unsigned HOST_WIDE_INT
289 : : GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
290 : : double_int GTY ((tag ("dw_val_class_const_double"))) val_double;
291 : : dw_wide_int_ptr GTY ((tag ("dw_val_class_wide_int"))) val_wide;
292 : : dw_vec_const GTY ((tag ("dw_val_class_vec"))) val_vec;
293 : : struct dw_val_die_union
294 : : {
295 : : dw_die_ref die;
296 : : int external;
297 : : } GTY ((tag ("dw_val_class_die_ref"))) val_die_ref;
298 : : unsigned GTY ((tag ("dw_val_class_fde_ref"))) val_fde_index;
299 : : struct indirect_string_node * GTY ((tag ("dw_val_class_str"))) val_str;
300 : : char * GTY ((tag ("dw_val_class_lbl_id"))) val_lbl_id;
301 : : unsigned char GTY ((tag ("dw_val_class_flag"))) val_flag;
302 : : struct dwarf_file_data * GTY ((tag ("dw_val_class_file"))) val_file;
303 : : struct dwarf_file_data *
304 : : GTY ((tag ("dw_val_class_file_implicit"))) val_file_implicit;
305 : : unsigned char GTY ((tag ("dw_val_class_data8"))) val_data8[8];
306 : : tree GTY ((tag ("dw_val_class_decl_ref"))) val_decl_ref;
307 : : struct dw_val_vms_delta_union
308 : : {
309 : : char * lbl1;
310 : : char * lbl2;
311 : : } GTY ((tag ("dw_val_class_vms_delta"))) val_vms_delta;
312 : : dw_discr_value GTY ((tag ("dw_val_class_discr_value"))) val_discr_value;
313 : : dw_discr_list_ref GTY ((tag ("dw_val_class_discr_list"))) val_discr_list;
314 : : char * GTY ((tag ("dw_val_class_symview"))) val_symbolic_view;
315 : : }
316 : : GTY ((desc ("%1.val_class"))) v;
317 : : };
318 : :
319 : : /* Locations in memory are described using a sequence of stack machine
320 : : operations. */
321 : :
322 : : struct GTY((chain_next ("%h.dw_loc_next"))) dw_loc_descr_node {
323 : : dw_loc_descr_ref dw_loc_next;
324 : : ENUM_BITFIELD (dwarf_location_atom) dw_loc_opc : 8;
325 : : /* Used to distinguish DW_OP_addr with a direct symbol relocation
326 : : from DW_OP_addr with a dtp-relative symbol relocation. */
327 : : unsigned int dtprel : 1;
328 : : /* For DW_OP_pick, DW_OP_dup and DW_OP_over operations: true iff.
329 : : it targets a DWARF prodecure argument. In this case, it needs to be
330 : : relocated according to the current frame offset. */
331 : : unsigned int frame_offset_rel : 1;
332 : : int dw_loc_addr;
333 : : dw_val_node dw_loc_oprnd1;
334 : : dw_val_node dw_loc_oprnd2;
335 : : };
336 : :
337 : : /* A variant (inside a record variant part) is selected when the corresponding
338 : : discriminant matches its set of values (see the comment for dw_discr_value).
339 : : The following datastructure holds such matching information. */
340 : :
341 : : struct GTY(()) dw_discr_list_node {
342 : : dw_discr_list_ref dw_discr_next;
343 : :
344 : : dw_discr_value dw_discr_lower_bound;
345 : : dw_discr_value dw_discr_upper_bound;
346 : : /* This node represents only the value in dw_discr_lower_bound when it's
347 : : zero. It represents the range between the two fields (bounds included)
348 : : otherwise. */
349 : : int dw_discr_range;
350 : : };
351 : :
352 : : struct GTY((variable_size)) dw_wide_int {
353 : : unsigned int precision;
354 : : unsigned int len;
355 : : HOST_WIDE_INT val[1];
356 : :
357 : 1068 : unsigned int get_precision () const { return precision; }
358 : 0 : unsigned int get_len () const { return len; }
359 : 236 : const HOST_WIDE_INT *get_val () const { return val; }
360 : : inline HOST_WIDE_INT elt (unsigned int) const;
361 : : inline bool operator == (const dw_wide_int &) const;
362 : : };
363 : :
364 : : inline HOST_WIDE_INT
365 : 584 : dw_wide_int::elt (unsigned int i) const
366 : : {
367 : 584 : if (i < len)
368 : 583 : return val[i];
369 : 1 : wide_int_ref ref = wi::storage_ref (val, len, precision);
370 : 1 : return wi::sign_mask (ref);
371 : : }
372 : :
373 : : inline bool
374 : 0 : dw_wide_int::operator == (const dw_wide_int &o) const
375 : : {
376 : 0 : wide_int_ref ref1 = wi::storage_ref (val, len, precision);
377 : 0 : wide_int_ref ref2 = wi::storage_ref (o.val, o.len, o.precision);
378 : 0 : return ref1 == ref2;
379 : : }
380 : :
381 : : /* Interface from dwarf2out.cc to dwarf2cfi.cc. */
382 : : extern struct dw_loc_descr_node *build_cfa_loc
383 : : (dw_cfa_location *, poly_int64);
384 : : extern struct dw_loc_descr_node *build_cfa_aligned_loc
385 : : (dw_cfa_location *, poly_int64, HOST_WIDE_INT);
386 : : extern struct dw_loc_descr_node *build_span_loc (struct cfa_reg);
387 : : extern struct dw_loc_descr_node *mem_loc_descriptor
388 : : (rtx, machine_mode mode, machine_mode mem_mode,
389 : : enum var_init_status);
390 : : extern bool loc_descr_equal_p (dw_loc_descr_ref, dw_loc_descr_ref);
391 : : extern dw_fde_ref dwarf2out_alloc_current_fde (void);
392 : :
393 : : extern unsigned long size_of_locs (dw_loc_descr_ref);
394 : : extern void output_loc_sequence (dw_loc_descr_ref, int);
395 : : extern void output_loc_sequence_raw (dw_loc_descr_ref);
396 : :
397 : : /* Interface from dwarf2cfi.cc to dwarf2out.cc. */
398 : : extern void lookup_cfa_1 (dw_cfi_ref cfi, dw_cfa_location *loc,
399 : : dw_cfa_location *remember);
400 : : extern bool cfa_equal_p (const dw_cfa_location *, const dw_cfa_location *);
401 : :
402 : : extern void output_cfi (dw_cfi_ref, dw_fde_ref, int);
403 : :
404 : : extern GTY(()) cfi_vec cie_cfi_vec;
405 : :
406 : : /* Interface from dwarf2*.c to the rest of the compiler. */
407 : : extern enum dw_cfi_oprnd_type dw_cfi_oprnd1_desc (dwarf_call_frame_info cfi);
408 : : extern enum dw_cfi_oprnd_type dw_cfi_oprnd2_desc (dwarf_call_frame_info cfi);
409 : :
410 : : extern void output_cfi_directive (FILE *f, dw_cfi_ref cfi);
411 : :
412 : : extern void dwarf2out_emit_cfi (dw_cfi_ref cfi);
413 : :
414 : : extern void debug_dwarf (void);
415 : : struct die_struct;
416 : : extern void debug_dwarf_die (struct die_struct *);
417 : : extern void debug_dwarf_loc_descr (dw_loc_descr_ref);
418 : : extern void debug (die_struct &ref);
419 : : extern void debug (die_struct *ptr);
420 : : extern void dwarf2out_set_demangle_name_func (const char *(*) (const char *));
421 : : #ifdef VMS_DEBUGGING_INFO
422 : : extern void dwarf2out_vms_debug_main_pointer (void);
423 : : #endif
424 : :
425 : : enum array_descr_ordering
426 : : {
427 : : array_descr_ordering_default,
428 : : array_descr_ordering_row_major,
429 : : array_descr_ordering_column_major
430 : : };
431 : :
432 : : #define DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN 16
433 : :
434 : : struct array_descr_info
435 : : {
436 : : int ndimensions;
437 : : enum array_descr_ordering ordering;
438 : : tree element_type;
439 : : tree base_decl;
440 : : tree data_location;
441 : : tree allocated;
442 : : tree associated;
443 : : tree stride;
444 : : tree rank;
445 : : bool stride_in_bits;
446 : : struct array_descr_dimen
447 : : {
448 : : /* GCC uses sizetype for array indices, so lower_bound and upper_bound
449 : : will likely be "sizetype" values. However, bounds may have another
450 : : type in the original source code. */
451 : : tree bounds_type;
452 : : tree lower_bound;
453 : : tree upper_bound;
454 : :
455 : : /* Only Fortran uses more than one dimension for array types. For other
456 : : languages, the stride can be rather specified for the whole array. */
457 : : tree stride;
458 : : } dimen[DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN];
459 : : };
460 : :
461 : : enum fixed_point_scale_factor
462 : : {
463 : : fixed_point_scale_factor_binary,
464 : : fixed_point_scale_factor_decimal,
465 : : fixed_point_scale_factor_arbitrary
466 : : };
467 : :
468 : : struct fixed_point_type_info
469 : : {
470 : : /* The scale factor is the value one has to multiply the actual data with
471 : : to get the fixed point value. We support three ways to encode it. */
472 : : enum fixed_point_scale_factor scale_factor_kind;
473 : : union
474 : : {
475 : : /* For a binary scale factor, the scale factor is 2 ** binary. */
476 : : int binary;
477 : : /* For a decimal scale factor, the scale factor is 10 ** decimal. */
478 : : int decimal;
479 : : /* For an arbitrary scale factor, the scale factor is the ratio
480 : : numerator / denominator. */
481 : : struct { tree numerator; tree denominator; } arbitrary;
482 : : } scale_factor;
483 : : };
484 : :
485 : : void dwarf2cfi_cc_finalize (void);
486 : : void dwarf2out_cc_finalize (void);
487 : :
488 : : /* Some DWARF internals are exposed for the needs of DWARF-based debug
489 : : formats. */
490 : :
491 : : /* Each DIE attribute has a field specifying the attribute kind,
492 : : a link to the next attribute in the chain, and an attribute value.
493 : : Attributes are typically linked below the DIE they modify. */
494 : :
495 : : typedef struct GTY(()) dw_attr_struct {
496 : : enum dwarf_attribute dw_attr;
497 : : dw_val_node dw_attr_val;
498 : : }
499 : : dw_attr_node;
500 : :
501 : : extern dw_attr_node *get_AT (dw_die_ref, enum dwarf_attribute);
502 : : extern HOST_WIDE_INT AT_int (dw_attr_node *);
503 : : extern unsigned HOST_WIDE_INT AT_unsigned (dw_attr_node *a);
504 : : extern dw_loc_descr_ref AT_loc (dw_attr_node *);
505 : : extern dw_die_ref get_AT_ref (dw_die_ref, enum dwarf_attribute);
506 : : extern const char *get_AT_string (dw_die_ref, enum dwarf_attribute);
507 : : extern enum dw_val_class AT_class (dw_attr_node *);
508 : : extern unsigned HOST_WIDE_INT AT_unsigned (dw_attr_node *);
509 : : extern unsigned get_AT_unsigned (dw_die_ref, enum dwarf_attribute);
510 : : extern int get_AT_flag (dw_die_ref, enum dwarf_attribute);
511 : :
512 : : extern void add_name_attribute (dw_die_ref, const char *);
513 : :
514 : : extern dw_die_ref new_die_raw (enum dwarf_tag);
515 : : extern dw_die_ref base_type_die (tree, bool);
516 : :
517 : : extern dw_die_ref lookup_decl_die (tree);
518 : : extern dw_die_ref lookup_type_die (tree);
519 : :
520 : : extern dw_die_ref dw_get_die_child (dw_die_ref);
521 : : extern dw_die_ref dw_get_die_sib (dw_die_ref);
522 : : extern dw_die_ref dw_get_die_parent (dw_die_ref);
523 : : extern enum dwarf_tag dw_get_die_tag (dw_die_ref);
524 : :
525 : : /* Data about a single source file. */
526 : : struct GTY((for_user)) dwarf_file_data {
527 : : const char * key;
528 : : const char * filename;
529 : : int emitted_number;
530 : : };
531 : :
532 : : extern struct dwarf_file_data *get_AT_file (dw_die_ref,
533 : : enum dwarf_attribute);
534 : :
535 : : #endif /* GCC_DWARF2OUT_H */
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