aboutsummaryrefslogtreecommitdiff
path: root/libctf/ctf-impl.h
blob: eea5204c51dd6d9ebdca02ded6302bec897180d4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
/* Implementation header.
   Copyright (C) 2019-2020 Free Software Foundation, Inc.

   This file is part of libctf.

   libctf is free software; you can redistribute it and/or modify it under
   the terms of the GNU General Public License as published by the Free
   Software Foundation; either version 3, or (at your option) any later
   version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; see the file COPYING.  If not see
   <http://www.gnu.org/licenses/>.  */

#ifndef	_CTF_IMPL_H
#define	_CTF_IMPL_H

#include "config.h"
#include <errno.h>
#include <sys/param.h>
#include "ctf-decls.h"
#include <ctf-api.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <limits.h>
#include <ctype.h>
#include <elf.h>
#include <bfd.h>
#include "hashtab.h"

#ifdef	__cplusplus
extern "C"
{
#endif

/* Compiler attributes.  */

#if defined (__GNUC__)

/* GCC.  We assume that all compilers claiming to be GCC support sufficiently
   many GCC attributes that the code below works.  If some non-GCC compilers
   masquerading as GCC in fact do not implement these attributes, version checks
   may be required.  */

/* We use the _libctf_*_ pattern to avoid clashes with any future attribute
   macros glibc may introduce, which have names of the pattern
   __attribute_blah__.  */

#define _libctf_printflike_(string_index,first_to_check) \
    __attribute__ ((__format__ (__printf__, (string_index), (first_to_check))))
#define _libctf_unlikely_(x) __builtin_expect ((x), 0)
#define _libctf_unused_ __attribute__ ((__unused__))
#define _libctf_malloc_ __attribute__((__malloc__))

#else

#define _libctf_printflike_(string_index,first_to_check)
#define _libctf_unlikely_(x) (x)
#define _libctf_unused_
#define _libctf_malloc_
#define __extension__

#endif

/* libctf in-memory state.  */

typedef struct ctf_fixed_hash ctf_hash_t; /* Private to ctf-hash.c.  */
typedef struct ctf_dynhash ctf_dynhash_t; /* Private to ctf-hash.c.  */
typedef struct ctf_dynset ctf_dynset_t;   /* Private to ctf-hash.c.  */

typedef struct ctf_strs
{
  const char *cts_strs;		/* Base address of string table.  */
  size_t cts_len;		/* Size of string table in bytes.  */
} ctf_strs_t;

typedef struct ctf_strs_writable
{
  char *cts_strs;		/* Base address of string table.  */
  size_t cts_len;		/* Size of string table in bytes.  */
} ctf_strs_writable_t;

typedef struct ctf_dmodel
{
  const char *ctd_name;		/* Data model name.  */
  int ctd_code;			/* Data model code.  */
  size_t ctd_pointer;		/* Size of void * in bytes.  */
  size_t ctd_char;		/* Size of char in bytes.  */
  size_t ctd_short;		/* Size of short in bytes.  */
  size_t ctd_int;		/* Size of int in bytes.  */
  size_t ctd_long;		/* Size of long in bytes.  */
} ctf_dmodel_t;

typedef struct ctf_names
{
  ctf_hash_t *ctn_readonly;	/* Hash table when readonly.  */
  ctf_dynhash_t *ctn_writable;	/* Hash table when writable.  */
} ctf_names_t;

typedef struct ctf_lookup
{
  const char *ctl_prefix;	/* String prefix for this lookup.  */
  size_t ctl_len;		/* Length of prefix string in bytes.  */
  ctf_names_t *ctl_hash;	/* Pointer to hash table for lookup.  */
} ctf_lookup_t;

typedef struct ctf_fileops
{
  uint32_t (*ctfo_get_kind) (uint32_t);
  uint32_t (*ctfo_get_root) (uint32_t);
  uint32_t (*ctfo_get_vlen) (uint32_t);
  ssize_t (*ctfo_get_ctt_size) (const ctf_file_t *, const ctf_type_t *,
				ssize_t *, ssize_t *);
  ssize_t (*ctfo_get_vbytes) (unsigned short, ssize_t, size_t);
} ctf_fileops_t;

typedef struct ctf_list
{
  struct ctf_list *l_prev;	/* Previous pointer or tail pointer.  */
  struct ctf_list *l_next;	/* Next pointer or head pointer.  */
} ctf_list_t;

typedef enum
  {
   CTF_PREC_BASE,
   CTF_PREC_POINTER,
   CTF_PREC_ARRAY,
   CTF_PREC_FUNCTION,
   CTF_PREC_MAX
  } ctf_decl_prec_t;

typedef struct ctf_decl_node
{
  ctf_list_t cd_list;		/* Linked list pointers.  */
  ctf_id_t cd_type;		/* Type identifier.  */
  uint32_t cd_kind;		/* Type kind.  */
  uint32_t cd_n;		/* Type dimension if array.  */
} ctf_decl_node_t;

typedef struct ctf_decl
{
  ctf_list_t cd_nodes[CTF_PREC_MAX]; /* Declaration node stacks.  */
  int cd_order[CTF_PREC_MAX];	     /* Storage order of decls.  */
  ctf_decl_prec_t cd_qualp;	     /* Qualifier precision.  */
  ctf_decl_prec_t cd_ordp;	     /* Ordered precision.  */
  char *cd_buf;			     /* Buffer for output.  */
  int cd_err;			     /* Saved error value.  */
  int cd_enomem;		     /* Nonzero if OOM during printing.  */
} ctf_decl_t;

typedef struct ctf_dmdef
{
  ctf_list_t dmd_list;		/* List forward/back pointers.  */
  char *dmd_name;		/* Name of this member.  */
  ctf_id_t dmd_type;		/* Type of this member (for sou).  */
  unsigned long dmd_offset;	/* Offset of this member in bits (for sou).  */
  int dmd_value;		/* Value of this member (for enum).  */
} ctf_dmdef_t;

typedef struct ctf_dtdef
{
  ctf_list_t dtd_list;		/* List forward/back pointers.  */
  ctf_id_t dtd_type;		/* Type identifier for this definition.  */
  ctf_type_t dtd_data;		/* Type node, including name.  */
  union
  {
    ctf_list_t dtu_members;	/* struct, union, or enum */
    ctf_arinfo_t dtu_arr;	/* array */
    ctf_encoding_t dtu_enc;	/* integer or float */
    uint32_t *dtu_argv;		/* function */
    ctf_slice_t dtu_slice;	/* slice */
  } dtd_u;
} ctf_dtdef_t;

typedef struct ctf_dvdef
{
  ctf_list_t dvd_list;		/* List forward/back pointers.  */
  char *dvd_name;		/* Name associated with variable.  */
  ctf_id_t dvd_type;		/* Type of variable.  */
  unsigned long dvd_snapshots;	/* Snapshot count when inserted.  */
} ctf_dvdef_t;

typedef struct ctf_bundle
{
  ctf_file_t *ctb_file;		/* CTF container handle.  */
  ctf_id_t ctb_type;		/* CTF type identifier.  */
  ctf_dtdef_t *ctb_dtd;		/* CTF dynamic type definition (if any).  */
} ctf_bundle_t;

/* Atoms associate strings with a list of the CTF items that reference that
   string, so that ctf_update() can instantiate all the strings using the
   ctf_str_atoms and then reassociate them with the real string later.

   Strings can be interned into ctf_str_atom without having refs associated
   with them, for values that are returned to callers, etc.  Items are only
   removed from this table on ctf_close(), but on every ctf_update(), all the
   csa_refs in all entries are purged.  */

typedef struct ctf_str_atom
{
  const char *csa_str;		/* Backpointer to string (hash key).  */
  ctf_list_t csa_refs;		/* This string's refs.  */
  uint32_t csa_offset;		/* Strtab offset, if any.  */
  uint32_t csa_external_offset;	/* External strtab offset, if any.  */
  unsigned long csa_snapshot_id; /* Snapshot ID at time of creation.  */
} ctf_str_atom_t;

/* The refs of a single string in the atoms table.  */

typedef struct ctf_str_atom_ref
{
  ctf_list_t caf_list;		/* List forward/back pointers.  */
  uint32_t *caf_ref;		/* A single ref to this string.  */
} ctf_str_atom_ref_t;

/* The structure used as the key in a ctf_link_type_mapping, which lets the
   linker machinery determine which type IDs on the input side of a link map to
   which types on the output side.  (The value is a ctf_id_t: another
   index, not a type.)  */

typedef struct ctf_link_type_mapping_key
{
  ctf_file_t *cltm_fp;
  ctf_id_t cltm_idx;
} ctf_link_type_mapping_key_t;

/* The ctf_file is the structure used to represent a CTF container to library
   clients, who see it only as an opaque pointer.  Modifications can therefore
   be made freely to this structure without regard to client versioning.  The
   ctf_file_t typedef appears in <ctf-api.h> and declares a forward tag.

   NOTE: ctf_update() requires that everything inside of ctf_file either be an
   immediate value, a pointer to dynamically allocated data *outside* of the
   ctf_file itself, or a pointer to statically allocated data.  If you add a
   pointer to ctf_file that points to something within the ctf_file itself,
   you must make corresponding changes to ctf_update().  */

struct ctf_file
{
  const ctf_fileops_t *ctf_fileops; /* Version-specific file operations.  */
  struct ctf_header *ctf_header;    /* The header from this CTF file.  */
  unsigned char ctf_openflags;	    /* Flags the file had when opened.  */
  ctf_sect_t ctf_data;		    /* CTF data from object file.  */
  ctf_sect_t ctf_symtab;	    /* Symbol table from object file.  */
  ctf_sect_t ctf_strtab;	    /* String table from object file.  */
  ctf_dynhash_t *ctf_prov_strtab;   /* Maps provisional-strtab offsets
				       to names.  */
  ctf_dynhash_t *ctf_syn_ext_strtab; /* Maps ext-strtab offsets to names.  */
  void *ctf_data_mmapped;	    /* CTF data we mmapped, to free later.  */
  size_t ctf_data_mmapped_len;	    /* Length of CTF data we mmapped.  */
  ctf_names_t ctf_structs;	    /* Hash table of struct types.  */
  ctf_names_t ctf_unions;	    /* Hash table of union types.  */
  ctf_names_t ctf_enums;	    /* Hash table of enum types.  */
  ctf_names_t ctf_names;	    /* Hash table of remaining type names.  */
  ctf_lookup_t ctf_lookups[5];	    /* Pointers to nametabs for name lookup.  */
  ctf_strs_t ctf_str[2];	    /* Array of string table base and bounds.  */
  ctf_dynhash_t *ctf_str_atoms;	  /* Hash table of ctf_str_atoms_t.  */
  uint64_t ctf_str_num_refs;	  /* Number of refs to cts_str_atoms.  */
  uint32_t ctf_str_prov_offset;	  /* Latest provisional offset assigned so far.  */
  unsigned char *ctf_base;	  /* CTF file pointer.  */
  unsigned char *ctf_dynbase;	  /* Freeable CTF file pointer. */
  unsigned char *ctf_buf;	  /* Uncompressed CTF data buffer.  */
  size_t ctf_size;		  /* Size of CTF header + uncompressed data.  */
  uint32_t *ctf_sxlate;		  /* Translation table for symtab entries.  */
  unsigned long ctf_nsyms;	  /* Number of entries in symtab xlate table.  */
  uint32_t *ctf_txlate;		  /* Translation table for type IDs.  */
  uint32_t *ctf_ptrtab;		  /* Translation table for pointer-to lookups.  */
  size_t ctf_ptrtab_len;	  /* Num types storable in ptrtab currently.  */
  struct ctf_varent *ctf_vars;	  /* Sorted variable->type mapping.  */
  unsigned long ctf_nvars;	  /* Number of variables in ctf_vars.  */
  unsigned long ctf_typemax;	  /* Maximum valid type ID number.  */
  const ctf_dmodel_t *ctf_dmodel; /* Data model pointer (see above).  */
  const char *ctf_cuname;	  /* Compilation unit name (if any).  */
  char *ctf_dyncuname;		  /* Dynamically allocated name of CU.  */
  struct ctf_file *ctf_parent;	  /* Parent CTF container (if any).  */
  const char *ctf_parlabel;	  /* Label in parent container (if any).  */
  const char *ctf_parname;	  /* Basename of parent (if any).  */
  char *ctf_dynparname;		  /* Dynamically allocated name of parent.  */
  uint32_t ctf_parmax;		  /* Highest type ID of a parent type.  */
  uint32_t ctf_refcnt;		  /* Reference count (for parent links).  */
  uint32_t ctf_flags;		  /* Libctf flags (see below).  */
  int ctf_errno;		  /* Error code for most recent error.  */
  int ctf_version;		  /* CTF data version.  */
  ctf_dynhash_t *ctf_dthash;	  /* Hash of dynamic type definitions.  */
  ctf_list_t ctf_dtdefs;	  /* List of dynamic type definitions.  */
  ctf_dynhash_t *ctf_dvhash;	  /* Hash of dynamic variable mappings.  */
  ctf_list_t ctf_dvdefs;	  /* List of dynamic variable definitions.  */
  unsigned long ctf_dtoldid;	  /* Oldest id that has been committed.  */
  unsigned long ctf_snapshots;	  /* ctf_snapshot() plus ctf_update() count.  */
  unsigned long ctf_snapshot_lu;  /* ctf_snapshot() call count at last update.  */
  ctf_archive_t *ctf_archive;	  /* Archive this ctf_file_t came from.  */
  ctf_dynhash_t *ctf_link_inputs; /* Inputs to this link.  */
  ctf_dynhash_t *ctf_link_outputs; /* Additional outputs from this link.  */
  ctf_dynhash_t *ctf_link_type_mapping; /* Map input types to output types.  */
  ctf_dynhash_t *ctf_link_cu_mapping;	/* Map CU names to CTF dict names.  */
  /* Allow the caller to Change the name of link archive members.  */
  ctf_link_memb_name_changer_f *ctf_link_memb_name_changer;
  void *ctf_link_memb_name_changer_arg; /* Argument for it.  */
  ctf_dynhash_t *ctf_add_processing; /* Types ctf_add_type is working on now.  */
  char *ctf_tmp_typeslice;	  /* Storage for slicing up type names.  */
  size_t ctf_tmp_typeslicelen;	  /* Size of the typeslice.  */
  void *ctf_specific;		  /* Data for ctf_get/setspecific().  */
};

/* An abstraction over both a ctf_file_t and a ctf_archive_t.  */

struct ctf_archive_internal
{
  int ctfi_is_archive;
  int ctfi_unmap_on_close;
  ctf_file_t *ctfi_file;
  struct ctf_archive *ctfi_archive;
  ctf_sect_t ctfi_symsect;
  ctf_sect_t ctfi_strsect;
  int ctfi_free_symsect;
  void *ctfi_data;
  bfd *ctfi_abfd;		    /* Optional source of section data.  */
  void (*ctfi_bfd_close) (struct ctf_archive_internal *);
};

/* Iterator state for the *_next() functions.  */

/* A single hash key/value pair.  */
typedef struct ctf_next_hkv
{
  void *hkv_key;
  void *hkv_value;
} ctf_next_hkv_t;

struct ctf_next
{
  void (*ctn_iter_fun) (void);
  ctf_id_t ctn_type;
  ssize_t ctn_size;
  ssize_t ctn_increment;
  uint32_t ctn_n;
  /* We can save space on this side of things by noting that a container is
     either dynamic or not, as a whole, and a given iterator can only iterate
     over one kind of thing at once: so we can overlap the DTD and non-DTD
     members, and the structure, variable and enum members, etc.  */
  union
  {
    const ctf_member_t *ctn_mp;
    const ctf_lmember_t *ctn_lmp;
    const ctf_dmdef_t *ctn_dmd;
    const ctf_enum_t *ctn_en;
    const ctf_dvdef_t *ctn_dvd;
    ctf_next_hkv_t *ctn_sorted_hkv;
    void **ctn_hash_slot;
  } u;
  /* This union is of various sorts of container we can iterate over:
     currently dictionaries and archives, dynhashes, and dynsets.  */
  union
  {
    const ctf_file_t *ctn_fp;
    const ctf_archive_t *ctn_arc;
    const ctf_dynhash_t *ctn_h;
    const ctf_dynset_t *ctn_s;
  } cu;
};

/* Return x rounded up to an alignment boundary.
   eg, P2ROUNDUP(0x1234, 0x100) == 0x1300 (0x13*align)
   eg, P2ROUNDUP(0x5600, 0x100) == 0x5600 (0x56*align)  */
#define P2ROUNDUP(x, align)		(-(-(x) & -(align)))

/* * If an offs is not aligned already then round it up and align it. */
#define LCTF_ALIGN_OFFS(offs, align) ((offs + (align - 1)) & ~(align - 1))

#define LCTF_TYPE_ISPARENT(fp, id) ((id) <= fp->ctf_parmax)
#define LCTF_TYPE_ISCHILD(fp, id) ((id) > fp->ctf_parmax)
#define LCTF_TYPE_TO_INDEX(fp, id) ((id) & (fp->ctf_parmax))
#define LCTF_INDEX_TO_TYPE(fp, id, child) (child ? ((id) | (fp->ctf_parmax+1)) : \
					   (id))

#define LCTF_INDEX_TO_TYPEPTR(fp, i) \
    ((fp->ctf_flags & LCTF_RDWR) ?					\
     &(ctf_dtd_lookup (fp, LCTF_INDEX_TO_TYPE				\
		       (fp, i, fp->ctf_flags & LCTF_CHILD))->dtd_data) : \
     (ctf_type_t *)((uintptr_t)(fp)->ctf_buf + (fp)->ctf_txlate[(i)]))

#define LCTF_INFO_KIND(fp, info)	((fp)->ctf_fileops->ctfo_get_kind(info))
#define LCTF_INFO_ISROOT(fp, info)	((fp)->ctf_fileops->ctfo_get_root(info))
#define LCTF_INFO_VLEN(fp, info)	((fp)->ctf_fileops->ctfo_get_vlen(info))
#define LCTF_VBYTES(fp, kind, size, vlen) \
  ((fp)->ctf_fileops->ctfo_get_vbytes(kind, size, vlen))

#define LCTF_CHILD	0x0001	/* CTF container is a child */
#define LCTF_RDWR	0x0002	/* CTF container is writable */
#define LCTF_DIRTY	0x0004	/* CTF container has been modified */

extern ctf_names_t *ctf_name_table (ctf_file_t *, int);
extern const ctf_type_t *ctf_lookup_by_id (ctf_file_t **, ctf_id_t);
extern ctf_id_t ctf_lookup_by_rawname (ctf_file_t *, int, const char *);
extern ctf_id_t ctf_lookup_by_rawhash (ctf_file_t *, ctf_names_t *, const char *);
extern void ctf_set_ctl_hashes (ctf_file_t *);

extern ctf_file_t *ctf_get_dict (ctf_file_t *fp, ctf_id_t type);

typedef unsigned int (*ctf_hash_fun) (const void *ptr);
extern unsigned int ctf_hash_integer (const void *ptr);
extern unsigned int ctf_hash_string (const void *ptr);
extern unsigned int ctf_hash_type_mapping_key (const void *ptr);

typedef int (*ctf_hash_eq_fun) (const void *, const void *);
extern int ctf_hash_eq_integer (const void *, const void *);
extern int ctf_hash_eq_string (const void *, const void *);
extern int ctf_hash_eq_type_mapping_key (const void *, const void *);

extern int ctf_dynset_eq_string (const void *, const void *);

typedef void (*ctf_hash_free_fun) (void *);

typedef void (*ctf_hash_iter_f) (void *key, void *value, void *arg);
typedef int (*ctf_hash_iter_remove_f) (void *key, void *value, void *arg);
typedef int (*ctf_hash_iter_find_f) (void *key, void *value, void *arg);
typedef int (*ctf_hash_sort_f) (const ctf_next_hkv_t *, const ctf_next_hkv_t *,
				void *arg);

extern ctf_hash_t *ctf_hash_create (unsigned long, ctf_hash_fun, ctf_hash_eq_fun);
extern int ctf_hash_insert_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
extern int ctf_hash_define_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
extern ctf_id_t ctf_hash_lookup_type (ctf_hash_t *, ctf_file_t *, const char *);
extern uint32_t ctf_hash_size (const ctf_hash_t *);
extern void ctf_hash_destroy (ctf_hash_t *);

extern ctf_dynhash_t *ctf_dynhash_create (ctf_hash_fun, ctf_hash_eq_fun,
					  ctf_hash_free_fun, ctf_hash_free_fun);
extern int ctf_dynhash_insert (ctf_dynhash_t *, void *, void *);
extern void ctf_dynhash_remove (ctf_dynhash_t *, const void *);
extern size_t ctf_dynhash_elements (ctf_dynhash_t *);
extern void ctf_dynhash_empty (ctf_dynhash_t *);
extern void *ctf_dynhash_lookup (ctf_dynhash_t *, const void *);
extern int ctf_dynhash_lookup_kv (ctf_dynhash_t *, const void *key,
				  const void **orig_key, void **value);
extern void ctf_dynhash_destroy (ctf_dynhash_t *);
extern void ctf_dynhash_iter (ctf_dynhash_t *, ctf_hash_iter_f, void *);
extern void ctf_dynhash_iter_remove (ctf_dynhash_t *, ctf_hash_iter_remove_f,
				     void *);
extern void *ctf_dynhash_iter_find (ctf_dynhash_t *, ctf_hash_iter_find_f,
				    void *);
extern int ctf_dynhash_next (ctf_dynhash_t *, ctf_next_t **,
			     void **key, void **value);
extern int ctf_dynhash_next_sorted (ctf_dynhash_t *, ctf_next_t **,
				    void **key, void **value, ctf_hash_sort_f,
				    void *);

extern ctf_dynset_t *ctf_dynset_create (htab_hash, htab_eq, ctf_hash_free_fun);
extern int ctf_dynset_insert (ctf_dynset_t *, void *);
extern void ctf_dynset_remove (ctf_dynset_t *, const void *);
extern void ctf_dynset_destroy (ctf_dynset_t *);
extern void *ctf_dynset_lookup (ctf_dynset_t *, const void *);
extern int ctf_dynset_exists (ctf_dynset_t *, const void *key,
			      const void **orig_key);
extern int ctf_dynset_next (ctf_dynset_t *, ctf_next_t **, void **key);
extern void *ctf_dynset_lookup_any (ctf_dynset_t *);

#define	ctf_list_prev(elem)	((void *)(((ctf_list_t *)(elem))->l_prev))
#define	ctf_list_next(elem)	((void *)(((ctf_list_t *)(elem))->l_next))

extern void ctf_list_append (ctf_list_t *, void *);
extern void ctf_list_prepend (ctf_list_t *, void *);
extern void ctf_list_delete (ctf_list_t *, void *);
extern int ctf_list_empty_p (ctf_list_t *lp);

extern int ctf_dtd_insert (ctf_file_t *, ctf_dtdef_t *, int flag, int kind);
extern void ctf_dtd_delete (ctf_file_t *, ctf_dtdef_t *);
extern ctf_dtdef_t *ctf_dtd_lookup (const ctf_file_t *, ctf_id_t);
extern ctf_dtdef_t *ctf_dynamic_type (const ctf_file_t *, ctf_id_t);

extern int ctf_dvd_insert (ctf_file_t *, ctf_dvdef_t *);
extern void ctf_dvd_delete (ctf_file_t *, ctf_dvdef_t *);
extern ctf_dvdef_t *ctf_dvd_lookup (const ctf_file_t *, const char *);

extern void ctf_add_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
				  ctf_file_t *dst_fp, ctf_id_t dst_type);
extern ctf_id_t ctf_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
				  ctf_file_t **dst_fp);

extern void ctf_decl_init (ctf_decl_t *);
extern void ctf_decl_fini (ctf_decl_t *);
extern void ctf_decl_push (ctf_decl_t *, ctf_file_t *, ctf_id_t);

_libctf_printflike_ (2, 3)
extern void ctf_decl_sprintf (ctf_decl_t *, const char *, ...);
extern char *ctf_decl_buf (ctf_decl_t *cd);

extern const char *ctf_strptr (ctf_file_t *, uint32_t);
extern const char *ctf_strraw (ctf_file_t *, uint32_t);
extern const char *ctf_strraw_explicit (ctf_file_t *, uint32_t,
					ctf_strs_t *);
extern int ctf_str_create_atoms (ctf_file_t *);
extern void ctf_str_free_atoms (ctf_file_t *);
extern uint32_t ctf_str_add (ctf_file_t *, const char *);
extern uint32_t ctf_str_add_ref (ctf_file_t *, const char *, uint32_t *ref);
extern int ctf_str_add_external (ctf_file_t *, const char *, uint32_t offset);
extern void ctf_str_remove_ref (ctf_file_t *, const char *, uint32_t *ref);
extern void ctf_str_rollback (ctf_file_t *, ctf_snapshot_id_t);
extern void ctf_str_purge_refs (ctf_file_t *);
extern ctf_strs_writable_t ctf_str_write_strtab (ctf_file_t *);

extern struct ctf_archive_internal *
ctf_new_archive_internal (int is_archive, int unmap_on_close,
			  struct ctf_archive *, ctf_file_t *,
			  const ctf_sect_t *symsect,
			  const ctf_sect_t *strsect, int *errp);
extern struct ctf_archive *ctf_arc_open_internal (const char *, int *);
extern void ctf_arc_close_internal (struct ctf_archive *);
extern void *ctf_set_open_errno (int *, int);
extern unsigned long ctf_set_errno (ctf_file_t *, int);

extern ctf_file_t *ctf_simple_open_internal (const char *, size_t, const char *,
					     size_t, size_t,
					     const char *, size_t,
					     ctf_dynhash_t *, int, int *);
extern ctf_file_t *ctf_bufopen_internal (const ctf_sect_t *, const ctf_sect_t *,
					 const ctf_sect_t *, ctf_dynhash_t *,
					 int, int *);
extern int ctf_serialize (ctf_file_t *);

_libctf_malloc_
extern void *ctf_mmap (size_t length, size_t offset, int fd);
extern void ctf_munmap (void *, size_t);
extern ssize_t ctf_pread (int fd, void *buf, ssize_t count, off_t offset);

extern void *ctf_realloc (ctf_file_t *, void *, size_t);
extern char *ctf_str_append (char *, const char *);
extern char *ctf_str_append_noerr (char *, const char *);
extern const char *ctf_strerror (int);

extern ctf_id_t ctf_type_resolve_unsliced (ctf_file_t *, ctf_id_t);
extern int ctf_type_kind_unsliced (ctf_file_t *, ctf_id_t);

_libctf_printflike_ (1, 2)
extern void ctf_dprintf (const char *, ...);
extern void libctf_init_debug (void);

extern Elf64_Sym *ctf_sym_to_elf64 (const Elf32_Sym *src, Elf64_Sym *dst);
extern const char *ctf_lookup_symbol_name (ctf_file_t *fp, unsigned long symidx);

/* Variables, all underscore-prepended. */

extern const char _CTF_SECTION[];	/* name of CTF ELF section */
extern const char _CTF_NULLSTR[];	/* empty string */

extern int _libctf_version;	/* library client version */
extern int _libctf_debug;	/* debugging messages enabled */

#include "ctf-inlines.h"

#ifdef	__cplusplus
}
#endif

#endif /* _CTF_IMPL_H */