1 /* Implementation header.
2 Copyright (C) 2019-2020 Free Software Foundation, Inc.
4 This file is part of libctf.
6 libctf 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
11 This program is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 See the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; see the file COPYING. If not see
18 <http://www.gnu.org/licenses/>. */
25 #include <sys/param.h>
26 #include "ctf-decls.h"
29 #include <sys/types.h>
46 /* Compiler attributes. */
48 #if defined (__GNUC__)
50 /* GCC. We assume that all compilers claiming to be GCC support sufficiently
51 many GCC attributes that the code below works. If some non-GCC compilers
52 masquerading as GCC in fact do not implement these attributes, version checks
55 /* We use the _libctf_*_ pattern to avoid clashes with any future attribute
56 macros glibc may introduce, which have names of the pattern
57 __attribute_blah__. */
59 #define _libctf_printflike_(string_index,first_to_check) \
60 __attribute__ ((__format__ (__printf__, (string_index), (first_to_check))))
61 #define _libctf_unlikely_(x) __builtin_expect ((x), 0)
62 #define _libctf_unused_ __attribute__ ((__unused__))
63 #define _libctf_malloc_ __attribute__((__malloc__))
67 #define _libctf_printflike_(string_index,first_to_check)
68 #define _libctf_unlikely_(x) (x)
69 #define _libctf_unused_
70 #define _libctf_malloc_
75 #if defined (ENABLE_LIBCTF_HASH_DEBUGGING) && !defined (NDEBUG)
77 #define ctf_assert(fp, expr) (assert (expr), 1)
79 #define ctf_assert(fp, expr) \
80 _libctf_unlikely_ (ctf_assert_internal (fp, __FILE__, __LINE__, \
84 /* libctf in-memory state. */
86 typedef struct ctf_fixed_hash ctf_hash_t; /* Private to ctf-hash.c. */
87 typedef struct ctf_dynhash ctf_dynhash_t; /* Private to ctf-hash.c. */
88 typedef struct ctf_dynset ctf_dynset_t; /* Private to ctf-hash.c. */
90 typedef struct ctf_strs
92 const char *cts_strs; /* Base address of string table. */
93 size_t cts_len; /* Size of string table in bytes. */
96 typedef struct ctf_strs_writable
98 char *cts_strs; /* Base address of string table. */
99 size_t cts_len; /* Size of string table in bytes. */
100 } ctf_strs_writable_t;
102 typedef struct ctf_dmodel
104 const char *ctd_name; /* Data model name. */
105 int ctd_code; /* Data model code. */
106 size_t ctd_pointer; /* Size of void * in bytes. */
107 size_t ctd_char; /* Size of char in bytes. */
108 size_t ctd_short; /* Size of short in bytes. */
109 size_t ctd_int; /* Size of int in bytes. */
110 size_t ctd_long; /* Size of long in bytes. */
113 typedef struct ctf_names
115 ctf_hash_t *ctn_readonly; /* Hash table when readonly. */
116 ctf_dynhash_t *ctn_writable; /* Hash table when writable. */
119 typedef struct ctf_lookup
121 const char *ctl_prefix; /* String prefix for this lookup. */
122 size_t ctl_len; /* Length of prefix string in bytes. */
123 ctf_names_t *ctl_hash; /* Pointer to hash table for lookup. */
126 typedef struct ctf_fileops
128 uint32_t (*ctfo_get_kind) (uint32_t);
129 uint32_t (*ctfo_get_root) (uint32_t);
130 uint32_t (*ctfo_get_vlen) (uint32_t);
131 ssize_t (*ctfo_get_ctt_size) (const ctf_file_t *, const ctf_type_t *,
132 ssize_t *, ssize_t *);
133 ssize_t (*ctfo_get_vbytes) (unsigned short, ssize_t, size_t);
136 typedef struct ctf_list
138 struct ctf_list *l_prev; /* Previous pointer or tail pointer. */
139 struct ctf_list *l_next; /* Next pointer or head pointer. */
151 typedef struct ctf_decl_node
153 ctf_list_t cd_list; /* Linked list pointers. */
154 ctf_id_t cd_type; /* Type identifier. */
155 uint32_t cd_kind; /* Type kind. */
156 uint32_t cd_n; /* Type dimension if array. */
159 typedef struct ctf_decl
161 ctf_list_t cd_nodes[CTF_PREC_MAX]; /* Declaration node stacks. */
162 int cd_order[CTF_PREC_MAX]; /* Storage order of decls. */
163 ctf_decl_prec_t cd_qualp; /* Qualifier precision. */
164 ctf_decl_prec_t cd_ordp; /* Ordered precision. */
165 char *cd_buf; /* Buffer for output. */
166 int cd_err; /* Saved error value. */
167 int cd_enomem; /* Nonzero if OOM during printing. */
170 typedef struct ctf_dmdef
172 ctf_list_t dmd_list; /* List forward/back pointers. */
173 char *dmd_name; /* Name of this member. */
174 ctf_id_t dmd_type; /* Type of this member (for sou). */
175 unsigned long dmd_offset; /* Offset of this member in bits (for sou). */
176 int dmd_value; /* Value of this member (for enum). */
179 typedef struct ctf_dtdef
181 ctf_list_t dtd_list; /* List forward/back pointers. */
182 ctf_id_t dtd_type; /* Type identifier for this definition. */
183 ctf_type_t dtd_data; /* Type node, including name. */
186 ctf_list_t dtu_members; /* struct, union, or enum */
187 ctf_arinfo_t dtu_arr; /* array */
188 ctf_encoding_t dtu_enc; /* integer or float */
189 uint32_t *dtu_argv; /* function */
190 ctf_slice_t dtu_slice; /* slice */
194 typedef struct ctf_dvdef
196 ctf_list_t dvd_list; /* List forward/back pointers. */
197 char *dvd_name; /* Name associated with variable. */
198 ctf_id_t dvd_type; /* Type of variable. */
199 unsigned long dvd_snapshots; /* Snapshot count when inserted. */
202 typedef struct ctf_bundle
204 ctf_file_t *ctb_file; /* CTF container handle. */
205 ctf_id_t ctb_type; /* CTF type identifier. */
206 ctf_dtdef_t *ctb_dtd; /* CTF dynamic type definition (if any). */
209 typedef struct ctf_err_warning
211 ctf_list_t cew_list; /* List forward/back pointers. */
212 int cew_is_warning; /* 1 if warning, 0 if error. */
213 char *cew_text; /* Error/warning text. */
216 /* Atoms associate strings with a list of the CTF items that reference that
217 string, so that ctf_update() can instantiate all the strings using the
218 ctf_str_atoms and then reassociate them with the real string later.
220 Strings can be interned into ctf_str_atom without having refs associated
221 with them, for values that are returned to callers, etc. Items are only
222 removed from this table on ctf_close(), but on every ctf_update(), all the
223 csa_refs in all entries are purged. */
225 typedef struct ctf_str_atom
227 const char *csa_str; /* Backpointer to string (hash key). */
228 ctf_list_t csa_refs; /* This string's refs. */
229 uint32_t csa_offset; /* Strtab offset, if any. */
230 uint32_t csa_external_offset; /* External strtab offset, if any. */
231 unsigned long csa_snapshot_id; /* Snapshot ID at time of creation. */
234 /* The refs of a single string in the atoms table. */
236 typedef struct ctf_str_atom_ref
238 ctf_list_t caf_list; /* List forward/back pointers. */
239 uint32_t *caf_ref; /* A single ref to this string. */
240 } ctf_str_atom_ref_t;
242 /* The structure used as the key in a ctf_link_type_mapping. The value is a
243 type index, not a type ID. */
245 typedef struct ctf_link_type_key
249 } ctf_link_type_key_t;
251 /* The structure used as the key in a cd_id_to_file_t on 32-bit platforms. */
252 typedef struct ctf_type_id_key
258 /* Deduplicator state.
260 The dedup state below uses three terms consistently. A "hash" is a
261 ctf_dynhash_t; a "hash value" is the hash value of a type as returned by
262 ctf_dedup_hash_type; a "global type ID" or "global ID" is a packed-together
263 reference to a single ctf_file_t (by array index in an array of inputs) and
264 ctf_id_t, i.e. a single instance of some hash value in some input.
266 The deduplication algorithm takes a bunch of inputs and yields a single
267 shared "output" and possibly many outputs corresponding to individual inputs
268 that still contain types after sharing of unconflicted types. Almost all
269 deduplicator state is stored in the struct ctf_dedup in the output, though a
270 (very) few things are stored in inputs for simplicity's sake, usually if they
271 are linking together things within the scope of a single TU.
273 Flushed at the end of every ctf_dedup run. */
275 typedef struct ctf_dedup
277 /* The CTF linker flags in force for this dedup run. */
280 /* On 32-bit platforms only, a hash of global type IDs, in the form of
281 a ctf_link_type_id_key_t. */
282 ctf_dynhash_t *cd_id_to_file_t;
284 /* Atoms tables of decorated names: maps undecorated name to decorated name.
285 (The actual allocations are in the CTF file for the former and the real
286 atoms table for the latter). Uses the same namespaces as ctf_lookups,
287 below, but has no need for null-termination. */
288 ctf_dynhash_t *cd_decorated_names[4];
290 /* Map type names to a hash from type hash value -> number of times each value
292 ctf_dynhash_t *cd_name_counts;
294 /* Map global type IDs to type hash values. Used to determine if types are
295 already hashed without having to recompute their hash values again, and to
296 link types together at later stages. Forwards that are peeked through to
297 structs and unions are not represented in here, so lookups that might be
298 such a type (in practice, all lookups) must go via cd_replaced_types first
299 to take this into account. Discarded before each rehashing. */
300 ctf_dynhash_t *cd_type_hashes;
302 /* Maps from the names of structs/unions/enums to a a single GID which is the
303 only appearance of that type in any input: if it appears in more than one
304 input, a value which is a GID with an input_num of -1 appears. Used in
305 share-duplicated link mode link modes to determine whether structs/unions
306 can be cited from multiple TUs. Only populated in that link mode. */
307 ctf_dynhash_t *cd_struct_origin;
309 /* Maps type hash values to a set of hash values of the types that cite them:
310 i.e., pointing backwards up the type graph. Used for recursive conflict
311 marking. Citations from tagged structures, unions, and forwards do not
312 appear in this graph. */
313 ctf_dynhash_t *cd_citers;
315 /* Maps type hash values to input global type IDs. The value is a set (a
316 hash) of global type IDs. Discarded before each rehashing. The result of
317 the ctf_dedup function. */
318 ctf_dynhash_t *cd_output_mapping;
320 /* A map giving the GID of the first appearance of each type for each type
322 ctf_dynhash_t *cd_output_first_gid;
324 /* Used to ensure that we never try to map a single type ID to more than one
326 ctf_dynhash_t *cd_output_mapping_guard;
328 /* Maps the global type IDs of structures in input TUs whose members still
329 need emission to the global type ID of the already-emitted target type
330 (which has no members yet) in the appropriate target. Uniquely, the latter
331 ID represents a *target* ID (i.e. the cd_output_mapping of some specified
332 input): we encode the shared (parent) dict with an ID of -1. */
333 ctf_dynhash_t *cd_emission_struct_members;
335 /* A set (a hash) of hash values of conflicting types. */
336 ctf_dynset_t *cd_conflicting_types;
338 /* Maps type hashes to ctf_id_t's in this dictionary. Populated only at
339 emission time, in the dictionary where emission is taking place. */
340 ctf_dynhash_t *cd_output_emission_hashes;
342 /* Maps the decorated names of conflicted cross-TU forwards that were forcibly
343 emitted in this TU to their emitted ctf_id_ts. Populated only at emission
344 time, in the dictionary where emission is taking place. */
345 ctf_dynhash_t *cd_output_emission_conflicted_forwards;
347 /* Points to the output counterpart of this input dictionary, at emission
349 ctf_file_t *cd_output;
352 /* The ctf_file is the structure used to represent a CTF container to library
353 clients, who see it only as an opaque pointer. Modifications can therefore
354 be made freely to this structure without regard to client versioning. The
355 ctf_file_t typedef appears in <ctf-api.h> and declares a forward tag.
357 NOTE: ctf_update() requires that everything inside of ctf_file either be an
358 immediate value, a pointer to dynamically allocated data *outside* of the
359 ctf_file itself, or a pointer to statically allocated data. If you add a
360 pointer to ctf_file that points to something within the ctf_file itself,
361 you must make corresponding changes to ctf_update(). */
365 const ctf_fileops_t *ctf_fileops; /* Version-specific file operations. */
366 struct ctf_header *ctf_header; /* The header from this CTF file. */
367 unsigned char ctf_openflags; /* Flags the file had when opened. */
368 ctf_sect_t ctf_data; /* CTF data from object file. */
369 ctf_sect_t ctf_symtab; /* Symbol table from object file. */
370 ctf_sect_t ctf_strtab; /* String table from object file. */
371 ctf_dynhash_t *ctf_prov_strtab; /* Maps provisional-strtab offsets
373 ctf_dynhash_t *ctf_syn_ext_strtab; /* Maps ext-strtab offsets to names. */
374 void *ctf_data_mmapped; /* CTF data we mmapped, to free later. */
375 size_t ctf_data_mmapped_len; /* Length of CTF data we mmapped. */
376 ctf_names_t ctf_structs; /* Hash table of struct types. */
377 ctf_names_t ctf_unions; /* Hash table of union types. */
378 ctf_names_t ctf_enums; /* Hash table of enum types. */
379 ctf_names_t ctf_names; /* Hash table of remaining type names. */
380 ctf_lookup_t ctf_lookups[5]; /* Pointers to nametabs for name lookup. */
381 ctf_strs_t ctf_str[2]; /* Array of string table base and bounds. */
382 ctf_dynhash_t *ctf_str_atoms; /* Hash table of ctf_str_atoms_t. */
383 uint64_t ctf_str_num_refs; /* Number of refs to cts_str_atoms. */
384 uint32_t ctf_str_prov_offset; /* Latest provisional offset assigned so far. */
385 unsigned char *ctf_base; /* CTF file pointer. */
386 unsigned char *ctf_dynbase; /* Freeable CTF file pointer. */
387 unsigned char *ctf_buf; /* Uncompressed CTF data buffer. */
388 size_t ctf_size; /* Size of CTF header + uncompressed data. */
389 uint32_t *ctf_sxlate; /* Translation table for symtab entries. */
390 unsigned long ctf_nsyms; /* Number of entries in symtab xlate table. */
391 uint32_t *ctf_txlate; /* Translation table for type IDs. */
392 uint32_t *ctf_ptrtab; /* Translation table for pointer-to lookups. */
393 size_t ctf_ptrtab_len; /* Num types storable in ptrtab currently. */
394 struct ctf_varent *ctf_vars; /* Sorted variable->type mapping. */
395 unsigned long ctf_nvars; /* Number of variables in ctf_vars. */
396 unsigned long ctf_typemax; /* Maximum valid type ID number. */
397 const ctf_dmodel_t *ctf_dmodel; /* Data model pointer (see above). */
398 const char *ctf_cuname; /* Compilation unit name (if any). */
399 char *ctf_dyncuname; /* Dynamically allocated name of CU. */
400 struct ctf_file *ctf_parent; /* Parent CTF container (if any). */
401 int ctf_parent_unreffed; /* Parent set by ctf_import_unref? */
402 const char *ctf_parlabel; /* Label in parent container (if any). */
403 const char *ctf_parname; /* Basename of parent (if any). */
404 char *ctf_dynparname; /* Dynamically allocated name of parent. */
405 uint32_t ctf_parmax; /* Highest type ID of a parent type. */
406 uint32_t ctf_refcnt; /* Reference count (for parent links). */
407 uint32_t ctf_flags; /* Libctf flags (see below). */
408 int ctf_errno; /* Error code for most recent error. */
409 int ctf_version; /* CTF data version. */
410 ctf_dynhash_t *ctf_dthash; /* Hash of dynamic type definitions. */
411 ctf_list_t ctf_dtdefs; /* List of dynamic type definitions. */
412 ctf_dynhash_t *ctf_dvhash; /* Hash of dynamic variable mappings. */
413 ctf_list_t ctf_dvdefs; /* List of dynamic variable definitions. */
414 unsigned long ctf_dtoldid; /* Oldest id that has been committed. */
415 unsigned long ctf_snapshots; /* ctf_snapshot() plus ctf_update() count. */
416 unsigned long ctf_snapshot_lu; /* ctf_snapshot() call count at last update. */
417 ctf_archive_t *ctf_archive; /* Archive this ctf_file_t came from. */
418 ctf_list_t ctf_errs_warnings; /* CTF errors and warnings. */
419 ctf_dynhash_t *ctf_link_inputs; /* Inputs to this link. */
420 ctf_dynhash_t *ctf_link_outputs; /* Additional outputs from this link. */
422 /* Map input types to output types: populated in each output dict.
423 Key is a ctf_link_type_key_t: value is a type ID. Used by
424 nondeduplicating links and ad-hoc ctf_add_type calls only. */
425 ctf_dynhash_t *ctf_link_type_mapping;
427 /* Map input CU names to output CTF dict names: populated in the top-level
430 Key and value are dynamically-allocated strings. */
431 ctf_dynhash_t *ctf_link_in_cu_mapping;
433 /* Map output CTF dict names to input CU names: populated in the top-level
434 output dict. A hash of string to hash (set) of strings. Key and
435 individual value members are shared with ctf_link_in_cu_mapping. */
436 ctf_dynhash_t *ctf_link_out_cu_mapping;
438 /* CTF linker flags. */
441 /* Allow the caller to change the name of link archive members. */
442 ctf_link_memb_name_changer_f *ctf_link_memb_name_changer;
443 void *ctf_link_memb_name_changer_arg; /* Argument for it. */
445 /* Allow the caller to filter out variables they don't care about. */
446 ctf_link_variable_filter_f *ctf_link_variable_filter;
447 void *ctf_link_variable_filter_arg; /* Argument for it. */
449 ctf_dynhash_t *ctf_add_processing; /* Types ctf_add_type is working on now. */
451 /* Atoms table for dedup string storage. All strings in the ctf_dedup_t are
452 stored here. Only the _alloc copy is allocated or freed: the
453 ctf_dedup_atoms may be pointed to some other CTF dict, to share its atoms.
454 We keep the atoms table outside the ctf_dedup so that atoms can be
455 preserved across multiple similar links, such as when doing cu-mapped
457 ctf_dynset_t *ctf_dedup_atoms;
458 ctf_dynset_t *ctf_dedup_atoms_alloc;
460 ctf_dedup_t ctf_dedup; /* Deduplicator state. */
462 char *ctf_tmp_typeslice; /* Storage for slicing up type names. */
463 size_t ctf_tmp_typeslicelen; /* Size of the typeslice. */
464 void *ctf_specific; /* Data for ctf_get/setspecific(). */
467 /* An abstraction over both a ctf_file_t and a ctf_archive_t. */
469 struct ctf_archive_internal
472 int ctfi_unmap_on_close;
473 ctf_file_t *ctfi_file;
474 struct ctf_archive *ctfi_archive;
475 ctf_sect_t ctfi_symsect;
476 ctf_sect_t ctfi_strsect;
477 int ctfi_free_symsect;
478 int ctfi_free_strsect;
480 bfd *ctfi_abfd; /* Optional source of section data. */
481 void (*ctfi_bfd_close) (struct ctf_archive_internal *);
484 /* Iterator state for the *_next() functions. */
486 /* A single hash key/value pair. */
487 typedef struct ctf_next_hkv
495 void (*ctn_iter_fun) (void);
498 ssize_t ctn_increment;
500 /* We can save space on this side of things by noting that a container is
501 either dynamic or not, as a whole, and a given iterator can only iterate
502 over one kind of thing at once: so we can overlap the DTD and non-DTD
503 members, and the structure, variable and enum members, etc. */
506 const ctf_member_t *ctn_mp;
507 const ctf_lmember_t *ctn_lmp;
508 const ctf_dmdef_t *ctn_dmd;
509 const ctf_enum_t *ctn_en;
510 const ctf_dvdef_t *ctn_dvd;
511 ctf_next_hkv_t *ctn_sorted_hkv;
512 void **ctn_hash_slot;
514 /* This union is of various sorts of container we can iterate over:
515 currently dictionaries and archives, dynhashes, and dynsets. */
518 const ctf_file_t *ctn_fp;
519 const ctf_archive_t *ctn_arc;
520 const ctf_dynhash_t *ctn_h;
521 const ctf_dynset_t *ctn_s;
525 /* Return x rounded up to an alignment boundary.
526 eg, P2ROUNDUP(0x1234, 0x100) == 0x1300 (0x13*align)
527 eg, P2ROUNDUP(0x5600, 0x100) == 0x5600 (0x56*align) */
528 #define P2ROUNDUP(x, align) (-(-(x) & -(align)))
530 /* * If an offs is not aligned already then round it up and align it. */
531 #define LCTF_ALIGN_OFFS(offs, align) ((offs + (align - 1)) & ~(align - 1))
533 #define LCTF_TYPE_ISPARENT(fp, id) ((id) <= fp->ctf_parmax)
534 #define LCTF_TYPE_ISCHILD(fp, id) ((id) > fp->ctf_parmax)
535 #define LCTF_TYPE_TO_INDEX(fp, id) ((id) & (fp->ctf_parmax))
536 #define LCTF_INDEX_TO_TYPE(fp, id, child) (child ? ((id) | (fp->ctf_parmax+1)) : \
539 #define LCTF_INDEX_TO_TYPEPTR(fp, i) \
540 ((fp->ctf_flags & LCTF_RDWR) ? \
541 &(ctf_dtd_lookup (fp, LCTF_INDEX_TO_TYPE \
542 (fp, i, fp->ctf_flags & LCTF_CHILD))->dtd_data) : \
543 (ctf_type_t *)((uintptr_t)(fp)->ctf_buf + (fp)->ctf_txlate[(i)]))
545 #define LCTF_INFO_KIND(fp, info) ((fp)->ctf_fileops->ctfo_get_kind(info))
546 #define LCTF_INFO_ISROOT(fp, info) ((fp)->ctf_fileops->ctfo_get_root(info))
547 #define LCTF_INFO_VLEN(fp, info) ((fp)->ctf_fileops->ctfo_get_vlen(info))
548 #define LCTF_VBYTES(fp, kind, size, vlen) \
549 ((fp)->ctf_fileops->ctfo_get_vbytes(kind, size, vlen))
551 #define LCTF_CHILD 0x0001 /* CTF container is a child */
552 #define LCTF_RDWR 0x0002 /* CTF container is writable */
553 #define LCTF_DIRTY 0x0004 /* CTF container has been modified */
555 extern ctf_names_t *ctf_name_table (ctf_file_t *, int);
556 extern const ctf_type_t *ctf_lookup_by_id (ctf_file_t **, ctf_id_t);
557 extern ctf_id_t ctf_lookup_by_rawname (ctf_file_t *, int, const char *);
558 extern ctf_id_t ctf_lookup_by_rawhash (ctf_file_t *, ctf_names_t *, const char *);
559 extern void ctf_set_ctl_hashes (ctf_file_t *);
561 extern ctf_file_t *ctf_get_dict (ctf_file_t *fp, ctf_id_t type);
563 typedef unsigned int (*ctf_hash_fun) (const void *ptr);
564 extern unsigned int ctf_hash_integer (const void *ptr);
565 extern unsigned int ctf_hash_string (const void *ptr);
566 extern unsigned int ctf_hash_type_key (const void *ptr);
567 extern unsigned int ctf_hash_type_id_key (const void *ptr);
569 typedef int (*ctf_hash_eq_fun) (const void *, const void *);
570 extern int ctf_hash_eq_integer (const void *, const void *);
571 extern int ctf_hash_eq_string (const void *, const void *);
572 extern int ctf_hash_eq_type_key (const void *, const void *);
573 extern int ctf_hash_eq_type_id_key (const void *, const void *);
575 extern int ctf_dynset_eq_string (const void *, const void *);
577 typedef void (*ctf_hash_free_fun) (void *);
579 typedef void (*ctf_hash_iter_f) (void *key, void *value, void *arg);
580 typedef int (*ctf_hash_iter_remove_f) (void *key, void *value, void *arg);
581 typedef int (*ctf_hash_iter_find_f) (void *key, void *value, void *arg);
582 typedef int (*ctf_hash_sort_f) (const ctf_next_hkv_t *, const ctf_next_hkv_t *,
585 extern ctf_hash_t *ctf_hash_create (unsigned long, ctf_hash_fun, ctf_hash_eq_fun);
586 extern int ctf_hash_insert_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
587 extern int ctf_hash_define_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
588 extern ctf_id_t ctf_hash_lookup_type (ctf_hash_t *, ctf_file_t *, const char *);
589 extern uint32_t ctf_hash_size (const ctf_hash_t *);
590 extern void ctf_hash_destroy (ctf_hash_t *);
592 extern ctf_dynhash_t *ctf_dynhash_create (ctf_hash_fun, ctf_hash_eq_fun,
593 ctf_hash_free_fun, ctf_hash_free_fun);
594 extern int ctf_dynhash_insert (ctf_dynhash_t *, void *, void *);
595 extern void ctf_dynhash_remove (ctf_dynhash_t *, const void *);
596 extern size_t ctf_dynhash_elements (ctf_dynhash_t *);
597 extern void ctf_dynhash_empty (ctf_dynhash_t *);
598 extern void *ctf_dynhash_lookup (ctf_dynhash_t *, const void *);
599 extern int ctf_dynhash_lookup_kv (ctf_dynhash_t *, const void *key,
600 const void **orig_key, void **value);
601 extern void ctf_dynhash_destroy (ctf_dynhash_t *);
602 extern void ctf_dynhash_iter (ctf_dynhash_t *, ctf_hash_iter_f, void *);
603 extern void ctf_dynhash_iter_remove (ctf_dynhash_t *, ctf_hash_iter_remove_f,
605 extern void *ctf_dynhash_iter_find (ctf_dynhash_t *, ctf_hash_iter_find_f,
607 extern int ctf_dynhash_next (ctf_dynhash_t *, ctf_next_t **,
608 void **key, void **value);
609 extern int ctf_dynhash_next_sorted (ctf_dynhash_t *, ctf_next_t **,
610 void **key, void **value, ctf_hash_sort_f,
613 extern ctf_dynset_t *ctf_dynset_create (htab_hash, htab_eq, ctf_hash_free_fun);
614 extern int ctf_dynset_insert (ctf_dynset_t *, void *);
615 extern void ctf_dynset_remove (ctf_dynset_t *, const void *);
616 extern void ctf_dynset_destroy (ctf_dynset_t *);
617 extern void *ctf_dynset_lookup (ctf_dynset_t *, const void *);
618 extern int ctf_dynset_exists (ctf_dynset_t *, const void *key,
619 const void **orig_key);
620 extern int ctf_dynset_next (ctf_dynset_t *, ctf_next_t **, void **key);
621 extern void *ctf_dynset_lookup_any (ctf_dynset_t *);
623 extern void ctf_sha1_init (ctf_sha1_t *);
624 extern void ctf_sha1_add (ctf_sha1_t *, const void *, size_t);
625 extern char *ctf_sha1_fini (ctf_sha1_t *, char *);
627 #define ctf_list_prev(elem) ((void *)(((ctf_list_t *)(elem))->l_prev))
628 #define ctf_list_next(elem) ((void *)(((ctf_list_t *)(elem))->l_next))
630 extern void ctf_list_append (ctf_list_t *, void *);
631 extern void ctf_list_prepend (ctf_list_t *, void *);
632 extern void ctf_list_delete (ctf_list_t *, void *);
633 extern void ctf_list_splice (ctf_list_t *, ctf_list_t *);
634 extern int ctf_list_empty_p (ctf_list_t *lp);
636 extern int ctf_dtd_insert (ctf_file_t *, ctf_dtdef_t *, int flag, int kind);
637 extern void ctf_dtd_delete (ctf_file_t *, ctf_dtdef_t *);
638 extern ctf_dtdef_t *ctf_dtd_lookup (const ctf_file_t *, ctf_id_t);
639 extern ctf_dtdef_t *ctf_dynamic_type (const ctf_file_t *, ctf_id_t);
641 extern int ctf_dvd_insert (ctf_file_t *, ctf_dvdef_t *);
642 extern void ctf_dvd_delete (ctf_file_t *, ctf_dvdef_t *);
643 extern ctf_dvdef_t *ctf_dvd_lookup (const ctf_file_t *, const char *);
645 extern ctf_id_t ctf_add_encoded (ctf_file_t *, uint32_t, const char *,
646 const ctf_encoding_t *, uint32_t kind);
647 extern ctf_id_t ctf_add_reftype (ctf_file_t *, uint32_t, ctf_id_t,
650 extern void ctf_add_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
651 ctf_file_t *dst_fp, ctf_id_t dst_type);
652 extern ctf_id_t ctf_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
653 ctf_file_t **dst_fp);
655 extern int ctf_dedup_atoms_init (ctf_file_t *);
656 extern int ctf_dedup (ctf_file_t *, ctf_file_t **, uint32_t ninputs,
657 uint32_t *parents, int cu_mapped);
658 extern void ctf_dedup_fini (ctf_file_t *, ctf_file_t **, uint32_t);
659 extern ctf_file_t **ctf_dedup_emit (ctf_file_t *, ctf_file_t **,
660 uint32_t ninputs, uint32_t *parents,
661 uint32_t *noutputs, int cu_mapped);
663 extern void ctf_decl_init (ctf_decl_t *);
664 extern void ctf_decl_fini (ctf_decl_t *);
665 extern void ctf_decl_push (ctf_decl_t *, ctf_file_t *, ctf_id_t);
667 _libctf_printflike_ (2, 3)
668 extern void ctf_decl_sprintf (ctf_decl_t *, const char *, ...);
669 extern char *ctf_decl_buf (ctf_decl_t *cd);
671 extern const char *ctf_strptr (ctf_file_t *, uint32_t);
672 extern const char *ctf_strraw (ctf_file_t *, uint32_t);
673 extern const char *ctf_strraw_explicit (ctf_file_t *, uint32_t,
675 extern int ctf_str_create_atoms (ctf_file_t *);
676 extern void ctf_str_free_atoms (ctf_file_t *);
677 extern uint32_t ctf_str_add (ctf_file_t *, const char *);
678 extern uint32_t ctf_str_add_ref (ctf_file_t *, const char *, uint32_t *ref);
679 extern int ctf_str_add_external (ctf_file_t *, const char *, uint32_t offset);
680 extern void ctf_str_remove_ref (ctf_file_t *, const char *, uint32_t *ref);
681 extern void ctf_str_rollback (ctf_file_t *, ctf_snapshot_id_t);
682 extern void ctf_str_purge_refs (ctf_file_t *);
683 extern ctf_strs_writable_t ctf_str_write_strtab (ctf_file_t *);
685 extern struct ctf_archive_internal *
686 ctf_new_archive_internal (int is_archive, int unmap_on_close,
687 struct ctf_archive *, ctf_file_t *,
688 const ctf_sect_t *symsect,
689 const ctf_sect_t *strsect, int *errp);
690 extern struct ctf_archive *ctf_arc_open_internal (const char *, int *);
691 extern void ctf_arc_close_internal (struct ctf_archive *);
692 extern void *ctf_set_open_errno (int *, int);
693 extern unsigned long ctf_set_errno (ctf_file_t *, int);
695 extern ctf_file_t *ctf_simple_open_internal (const char *, size_t, const char *,
697 const char *, size_t,
698 ctf_dynhash_t *, int, int *);
699 extern ctf_file_t *ctf_bufopen_internal (const ctf_sect_t *, const ctf_sect_t *,
700 const ctf_sect_t *, ctf_dynhash_t *,
702 extern int ctf_import_unref (ctf_file_t *fp, ctf_file_t *pfp);
703 extern int ctf_serialize (ctf_file_t *);
706 extern void *ctf_mmap (size_t length, size_t offset, int fd);
707 extern void ctf_munmap (void *, size_t);
708 extern ssize_t ctf_pread (int fd, void *buf, ssize_t count, off_t offset);
710 extern void *ctf_realloc (ctf_file_t *, void *, size_t);
711 extern char *ctf_str_append (char *, const char *);
712 extern char *ctf_str_append_noerr (char *, const char *);
714 extern ctf_id_t ctf_type_resolve_unsliced (ctf_file_t *, ctf_id_t);
715 extern int ctf_type_kind_unsliced (ctf_file_t *, ctf_id_t);
717 _libctf_printflike_ (1, 2)
718 extern void ctf_dprintf (const char *, ...);
719 extern void libctf_init_debug (void);
721 _libctf_printflike_ (3, 4)
722 extern void ctf_err_warn (ctf_file_t *, int is_warning, const char *, ...);
723 extern void ctf_assert_fail_internal (ctf_file_t *, const char *,
724 size_t, const char *);
725 extern const char *ctf_link_input_name (ctf_file_t *);
727 extern Elf64_Sym *ctf_sym_to_elf64 (const Elf32_Sym *src, Elf64_Sym *dst);
728 extern const char *ctf_lookup_symbol_name (ctf_file_t *fp, unsigned long symidx);
730 /* Variables, all underscore-prepended. */
732 extern const char _CTF_SECTION[]; /* name of CTF ELF section */
733 extern const char _CTF_NULLSTR[]; /* empty string */
735 extern int _libctf_version; /* library client version */
736 extern int _libctf_debug; /* debugging messages enabled */
738 #include "ctf-inlines.h"
744 #endif /* _CTF_IMPL_H */