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binutils-gdb/include/ctf-api.h
Nick Alcock 688d28f621 libctf, next: introduce new class of easier-to-use iterators 
The libctf machinery currently only provides one way to iterate over its
data structures: ctf_*_iter functions that take a callback and an arg
and repeatedly call it.

This *works*, but if you are doing a lot of iteration it is really quite
inconvenient: you have to package up your local variables into
structures over and over again and spawn lots of little functions even
if it would be clearer in a single run of code.  Look at ctf-string.c
for an extreme example of how unreadable this can get, with
three-line-long functions proliferating wildly.

The deduplicator takes this to the Nth level. It iterates over a whole
bunch of things: if we'd had to use _iter-class iterators for all of
them there would be twenty additional functions in the deduplicator
alone, for no other reason than that the iterator API requires it.

Let's do something better. strtok_r gives us half the design: generators
in a number of other languages give us the other half.

The *_next API allows you to iterate over CTF-like entities in a single
function using a normal while loop. e.g. here we are iterating over all
the types in a dict:

ctf_next_t *i = NULL;
int *hidden;
ctf_id_t id;

while ((id = ctf_type_next (fp, &i, &hidden, 1)) != CTF_ERR)
  {
    /* do something with 'hidden' and 'id' */
  }
if (ctf_errno (fp) != ECTF_NEXT_END)
    /* iteration error */

Here we are walking through the members of a struct with CTF ID
'struct_type':

ctf_next_t *i = NULL;
ssize_t offset;
const char *name;
ctf_id_t membtype;

while ((offset = ctf_member_next (fp, struct_type, &i, &name,
                                  &membtype)) >= 0
  {
    /* do something with offset, name, and membtype */
  }
if (ctf_errno (fp) != ECTF_NEXT_END)
    /* iteration error */

Like every other while loop, this means you have access to all the local
variables outside the loop while inside it, with no need to tiresomely
package things up in structures, move the body of the loop into a
separate function, etc, as you would with an iterator taking a callback.

ctf_*_next allocates 'i' for you on first entry (when it must be NULL),
and frees and NULLs it and returns a _next-dependent flag value when the
iteration is over: the fp errno is set to ECTF_NEXT_END when the
iteartion ends normally.  If you want to exit early, call
ctf_next_destroy on the iterator.  You can copy iterators using
ctf_next_copy, which copies their current iteration position so you can
remember loop positions and go back to them later (or ctf_next_destroy
them if you don't need them after all).

Each _next function returns an always-likely-to-be-useful property of
the thing being iterated over, and takes pointers to parameters for the
others: with very few exceptions all those parameters can be NULLs if
you're not interested in them, so e.g. you can iterate over only the
offsets of members of a structure this way:

while ((offset = ctf_member_next (fp, struct_id, &i, NULL, NULL)) >= 0)

If you pass an iterator in use by one iteration function to another one,
you get the new error ECTF_NEXT_WRONGFUN back; if you try to change
ctf_file_t in mid-iteration, you get ECTF_NEXT_WRONGFP back.

Internally the ctf_next_t remembers the iteration function in use,
various sizes and increments useful for almost all iterations, then
uses unions to overlap the actual entities being iterated over to keep
ctf_next_t size down.

Iterators available in the public API so far (all tested in actual use
in the deduplicator):

/* Iterate over the members of a STRUCT or UNION, returning each member's
   offset and optionally name and member type in turn.  On end-of-iteration,
   returns -1.  */
ssize_t
ctf_member_next (ctf_file_t *fp, ctf_id_t type, ctf_next_t **it,
                 const char **name, ctf_id_t *membtype);

/* Iterate over the members of an enum TYPE, returning each enumerand's
   NAME or NULL at end of iteration or error, and optionally passing
   back the enumerand's integer VALue.  */
const char *
ctf_enum_next (ctf_file_t *fp, ctf_id_t type, ctf_next_t **it,
              int *val);

/* Iterate over every type in the given CTF container (not including
   parents), optionally including non-user-visible types, returning
   each type ID and optionally the hidden flag in turn. Returns CTF_ERR
   on end of iteration or error.  */
ctf_id_t
ctf_type_next (ctf_file_t *fp, ctf_next_t **it, int *flag,
               int want_hidden);

/* Iterate over every variable in the given CTF container, in arbitrary
   order, returning the name and type of each variable in turn.  The
   NAME argument is not optional.  Returns CTF_ERR on end of iteration
   or error.  */
ctf_id_t
ctf_variable_next (ctf_file_t *fp, ctf_next_t **it, const char **name);

/* Iterate over all CTF files in an archive, returning each dict in turn as a
   ctf_file_t, and NULL on error or end of iteration.  It is the caller's
   responsibility to close it.  Parent dicts may be skipped.  Regardless of
   whether they are skipped or not, the caller must ctf_import the parent if
   need be.  */
ctf_file_t *
ctf_archive_next (const ctf_archive_t *wrapper, ctf_next_t **it,
                  const char **name, int skip_parent, int *errp);

ctf_label_next is prototyped but not implemented yet.

include/
	* ctf-api.h (ECTF_NEXT_END): New error.
	(ECTF_NEXT_WRONGFUN): Likewise.
	(ECTF_NEXT_WRONGFP): Likewise.
	(ECTF_NERR): Adjust.
	(ctf_next_t): New.
	(ctf_next_create): New prototype.
	(ctf_next_destroy): Likewise.
	(ctf_next_copy): Likewise.
	(ctf_member_next): Likewise.
	(ctf_enum_next): Likewise.
	(ctf_type_next): Likewise.
	(ctf_label_next): Likewise.
	(ctf_variable_next): Likewise.

libctf/
	* ctf-impl.h (ctf_next): New.
	(ctf_get_dict): New prototype.
	* ctf-lookup.c (ctf_get_dict): New, split out of...
	(ctf_lookup_by_id): ... here.
	* ctf-util.c (ctf_next_create): New.
	(ctf_next_destroy): New.
	(ctf_next_copy): New.
	* ctf-types.c (includes): Add <assert.h>.
	(ctf_member_next): New.
	(ctf_enum_next): New.
	(ctf_type_iter): Document the lack of iteration over parent
	types.
	(ctf_type_next): New.
	(ctf_variable_next): New.
	* ctf-archive.c (ctf_archive_next): New.
	* libctf.ver: Add new public functions.
2020-07-22 17:57:50 +01:00

480 lines
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/* Public API to libctf.
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/>. */
/* This header file defines the interfaces available from the CTF debugger
library, libctf. This API can be used by a debugger to operate on data in
the Compact ANSI-C Type Format (CTF). */
#ifndef _CTF_API_H
#define _CTF_API_H
#include <sys/types.h>
#include <ctf.h>
#include <zlib.h>
#ifdef __cplusplus
extern "C"
{
#endif
/* Clients can open one or more CTF containers and obtain a pointer to an
opaque ctf_file_t. Types are identified by an opaque ctf_id_t token.
They can also open or create read-only archives of CTF containers in a
ctf_archive_t.
These opaque definitions allow libctf to evolve without breaking clients. */
typedef struct ctf_file ctf_file_t;
typedef struct ctf_archive_internal ctf_archive_t;
typedef unsigned long ctf_id_t;
/* This opaque definition allows libctf to accept BFD data structures without
importing all the BFD noise into users' namespaces. */
struct bfd;
/* If the debugger needs to provide the CTF library with a set of raw buffers
for use as the CTF data, symbol table, and string table, it can do so by
filling in ctf_sect_t structures and passing them to ctf_bufopen().
The contents of this structure must always be in native endianness (no
byteswapping is performed). */
typedef struct ctf_sect
{
const char *cts_name; /* Section name (if any). */
const void *cts_data; /* Pointer to section data. */
size_t cts_size; /* Size of data in bytes. */
size_t cts_entsize; /* Size of each section entry (symtab only). */
} ctf_sect_t;
/* A minimal symbol extracted from a linker's internal symbol table
representation. */
typedef struct ctf_link_sym
{
/* The st_name will not be accessed outside the call to
ctf_link_shuffle_syms(). */
const char *st_name;
uint32_t st_shndx;
uint32_t st_type;
uint32_t st_value;
} ctf_link_sym_t;
/* Indication of how to share types when linking. */
/* Share all types that are not in conflict. The default. */
#define CTF_LINK_SHARE_UNCONFLICTED 0x0
/* Share only types that are used by multiple inputs. Not implemented yet. */
#define CTF_LINK_SHARE_DUPLICATED 0x1
/* Symbolic names for CTF sections. */
typedef enum ctf_sect_names
{
CTF_SECT_HEADER,
CTF_SECT_LABEL,
CTF_SECT_OBJT,
CTF_SECT_FUNC,
CTF_SECT_VAR,
CTF_SECT_TYPE,
CTF_SECT_STR
} ctf_sect_names_t;
/* Encoding information for integers, floating-point values, and certain other
intrinsics can be obtained by calling ctf_type_encoding(), below. The flags
field will contain values appropriate for the type defined in <ctf.h>. */
typedef struct ctf_encoding
{
uint32_t cte_format; /* Data format (CTF_INT_* or CTF_FP_* flags). */
uint32_t cte_offset; /* Offset of value in bits. */
uint32_t cte_bits; /* Size of storage in bits. */
} ctf_encoding_t;
typedef struct ctf_membinfo
{
ctf_id_t ctm_type; /* Type of struct or union member. */
unsigned long ctm_offset; /* Offset of member in bits. */
} ctf_membinfo_t;
typedef struct ctf_arinfo
{
ctf_id_t ctr_contents; /* Type of array contents. */
ctf_id_t ctr_index; /* Type of array index. */
uint32_t ctr_nelems; /* Number of elements. */
} ctf_arinfo_t;
typedef struct ctf_funcinfo
{
ctf_id_t ctc_return; /* Function return type. */
uint32_t ctc_argc; /* Number of typed arguments to function. */
uint32_t ctc_flags; /* Function attributes (see below). */
} ctf_funcinfo_t;
typedef struct ctf_lblinfo
{
ctf_id_t ctb_type; /* Last type associated with the label. */
} ctf_lblinfo_t;
typedef struct ctf_snapshot_id
{
unsigned long dtd_id; /* Highest DTD ID at time of snapshot. */
unsigned long snapshot_id; /* Snapshot id at time of snapshot. */
} ctf_snapshot_id_t;
#define CTF_FUNC_VARARG 0x1 /* Function arguments end with varargs. */
/* Functions that return a ctf_id_t use the following value to indicate failure.
ctf_errno() can be used to obtain an error code. Functions that return
a straight integral -1 also use ctf_errno(). */
#define CTF_ERR ((ctf_id_t) -1L)
#define ECTF_BASE 1000 /* Base value for libctf errnos. */
enum
{
ECTF_FMT = ECTF_BASE, /* File is not in CTF or ELF format. */
ECTF_BFDERR, /* BFD error. */
ECTF_CTFVERS, /* CTF dict version is too new for libctf. */
ECTF_BFD_AMBIGUOUS, /* Ambiguous BFD target. */
ECTF_SYMTAB, /* Symbol table uses invalid entry size. */
ECTF_SYMBAD, /* Symbol table data buffer is not valid. */
ECTF_STRBAD, /* String table data buffer is not valid. */
ECTF_CORRUPT, /* File data structure corruption detected. */
ECTF_NOCTFDATA, /* File does not contain CTF data. */
ECTF_NOCTFBUF, /* Buffer does not contain CTF data. */
ECTF_NOSYMTAB, /* Symbol table information is not available. */
ECTF_NOPARENT, /* The parent CTF dictionary is unavailable. */
ECTF_DMODEL, /* Data model mismatch. */
ECTF_LINKADDEDLATE, /* File added to link too late. */
ECTF_ZALLOC, /* Failed to allocate (de)compression buffer. */
ECTF_DECOMPRESS, /* Failed to decompress CTF data. */
ECTF_STRTAB, /* External string table is not available. */
ECTF_BADNAME, /* String name offset is corrupt. */
ECTF_BADID, /* Invalid type identifier. */
ECTF_NOTSOU, /* Type is not a struct or union. */
ECTF_NOTENUM, /* Type is not an enum. */
ECTF_NOTSUE, /* Type is not a struct, union, or enum. */
ECTF_NOTINTFP, /* Type is not an integer, float, or enum. */
ECTF_NOTARRAY, /* Type is not an array. */
ECTF_NOTREF, /* Type does not reference another type. */
ECTF_NAMELEN, /* Buffer is too small to hold type name. */
ECTF_NOTYPE, /* No type found corresponding to name. */
ECTF_SYNTAX, /* Syntax error in type name. */
ECTF_NOTFUNC, /* Symbol table entry or type is not a function. */
ECTF_NOFUNCDAT, /* No function information available for function. */
ECTF_NOTDATA, /* Symbol table entry does not refer to a data object. */
ECTF_NOTYPEDAT, /* No type information available for symbol. */
ECTF_NOLABEL, /* No label found corresponding to name. */
ECTF_NOLABELDATA, /* File does not contain any labels. */
ECTF_NOTSUP, /* Feature not supported. */
ECTF_NOENUMNAM, /* Enum element name not found. */
ECTF_NOMEMBNAM, /* Member name not found. */
ECTF_RDONLY, /* CTF container is read-only. */
ECTF_DTFULL, /* CTF type is full (no more members allowed). */
ECTF_FULL, /* CTF container is full. */
ECTF_DUPLICATE, /* Duplicate member or variable name. */
ECTF_CONFLICT, /* Conflicting type is already defined. */
ECTF_OVERROLLBACK, /* Attempt to roll back past a ctf_update. */
ECTF_COMPRESS, /* Failed to compress CTF data. */
ECTF_ARCREATE, /* Error creating CTF archive. */
ECTF_ARNNAME, /* Name not found in CTF archive. */
ECTF_SLICEOVERFLOW, /* Overflow of type bitness or offset in slice. */
ECTF_DUMPSECTUNKNOWN, /* Unknown section number in dump. */
ECTF_DUMPSECTCHANGED, /* Section changed in middle of dump. */
ECTF_NOTYET, /* Feature not yet implemented. */
ECTF_INTERNAL, /* Internal error in link. */
ECTF_NONREPRESENTABLE, /* Type not representable in CTF. */
ECTF_NEXT_END, /* End of iteration. */
ECTF_NEXT_WRONGFUN, /* Wrong iteration function called. */
ECTF_NEXT_WRONGFP /* Iteration entity changed in mid-iterate. */
};
#define ECTF_NERR (ECTF_NEXT_WRONGFP - ECTF_BASE + 1) /* Count of CTF errors. */
/* The CTF data model is inferred to be the caller's data model or the data
model of the given object, unless ctf_setmodel() is explicitly called. */
#define CTF_MODEL_ILP32 1 /* Object data model is ILP32. */
#define CTF_MODEL_LP64 2 /* Object data model is LP64. */
#ifdef _LP64
# define CTF_MODEL_NATIVE CTF_MODEL_LP64
#else
# define CTF_MODEL_NATIVE CTF_MODEL_ILP32
#endif
/* Dynamic CTF containers can be created using ctf_create(). The ctf_add_*
routines can be used to add new definitions to the dynamic container.
New types are labeled as root or non-root to determine whether they are
visible at the top-level program scope when subsequently doing a lookup. */
#define CTF_ADD_NONROOT 0 /* Type only visible in nested scope. */
#define CTF_ADD_ROOT 1 /* Type visible at top-level scope. */
/* These typedefs are used to define the signature for callback functions that
can be used with the iteration and visit functions below. There is also a
family of iteration functions that do not require callbacks. */
typedef int ctf_visit_f (const char *name, ctf_id_t type, unsigned long offset,
int depth, void *arg);
typedef int ctf_member_f (const char *name, ctf_id_t membtype,
unsigned long offset, void *arg);
typedef int ctf_enum_f (const char *name, int val, void *arg);
typedef int ctf_variable_f (const char *name, ctf_id_t type, void *arg);
typedef int ctf_type_f (ctf_id_t type, void *arg);
typedef int ctf_type_all_f (ctf_id_t type, int flag, void *arg);
typedef int ctf_label_f (const char *name, const ctf_lblinfo_t *info,
void *arg);
typedef int ctf_archive_member_f (ctf_file_t *fp, const char *name, void *arg);
typedef int ctf_archive_raw_member_f (const char *name, const void *content,
size_t len, void *arg);
typedef char *ctf_dump_decorate_f (ctf_sect_names_t sect,
char *line, void *arg);
typedef struct ctf_dump_state ctf_dump_state_t;
/* Iteration state for the _next() functions, and allocators/copiers/freers for
it. (None of these are needed for the simple case of iterating to the end:
the _next() function allocate and free the iterators for you.) */
typedef struct ctf_next ctf_next_t;
extern ctf_next_t *ctf_next_create (void);
extern void ctf_next_destroy (ctf_next_t *);
extern ctf_next_t *ctf_next_copy (ctf_next_t *);
/* Opening. These mostly return an abstraction over both CTF files and CTF
archives: so they can be used to open both. CTF files will appear to be an
archive with one member named '.ctf'. The low-level functions
ctf_simple_open() and ctf_bufopen() return ctf_file_t's directly, and cannot
be used on CTF archives. */
extern ctf_archive_t *ctf_bfdopen (struct bfd *, int *);
extern ctf_archive_t *ctf_bfdopen_ctfsect (struct bfd *, const ctf_sect_t *,
int *);
extern ctf_archive_t *ctf_fdopen (int fd, const char *filename,
const char *target, int *errp);
extern ctf_archive_t *ctf_open (const char *filename,
const char *target, int *errp);
extern void ctf_close (ctf_archive_t *);
extern ctf_sect_t ctf_getdatasect (const ctf_file_t *);
extern ctf_archive_t *ctf_get_arc (const ctf_file_t *);
extern ctf_archive_t *ctf_arc_open (const char *, int *);
extern ctf_archive_t *ctf_arc_bufopen (const ctf_sect_t *,
const ctf_sect_t *,
const ctf_sect_t *,
int *);
extern void ctf_arc_close (ctf_archive_t *);
extern ctf_file_t *ctf_arc_open_by_name (const ctf_archive_t *,
const char *, int *);
extern ctf_file_t *ctf_arc_open_by_name_sections (const ctf_archive_t *,
const ctf_sect_t *,
const ctf_sect_t *,
const char *, int *);
extern size_t ctf_archive_count (const ctf_archive_t *);
/* The next functions return or close real CTF files, or write out CTF archives,
not opaque containers around either. */
extern ctf_file_t *ctf_simple_open (const char *, size_t, const char *, size_t,
size_t, const char *, size_t, int *);
extern ctf_file_t *ctf_bufopen (const ctf_sect_t *, const ctf_sect_t *,
const ctf_sect_t *, int *);
extern void ctf_ref (ctf_file_t *);
extern void ctf_file_close (ctf_file_t *);
extern int ctf_arc_write (const char *, ctf_file_t **, size_t,
const char **, size_t);
extern int ctf_arc_write_fd (int, ctf_file_t **, size_t, const char **,
size_t);
extern const char *ctf_cuname (ctf_file_t *);
extern int ctf_cuname_set (ctf_file_t *, const char *);
extern ctf_file_t *ctf_parent_file (ctf_file_t *);
extern const char *ctf_parent_name (ctf_file_t *);
extern int ctf_parent_name_set (ctf_file_t *, const char *);
extern int ctf_type_isparent (ctf_file_t *, ctf_id_t);
extern int ctf_type_ischild (ctf_file_t *, ctf_id_t);
extern int ctf_import (ctf_file_t *, ctf_file_t *);
extern int ctf_setmodel (ctf_file_t *, int);
extern int ctf_getmodel (ctf_file_t *);
extern void ctf_setspecific (ctf_file_t *, void *);
extern void *ctf_getspecific (ctf_file_t *);
extern int ctf_errno (ctf_file_t *);
extern const char *ctf_errmsg (int);
extern int ctf_version (int);
extern int ctf_func_info (ctf_file_t *, unsigned long, ctf_funcinfo_t *);
extern int ctf_func_args (ctf_file_t *, unsigned long, uint32_t, ctf_id_t *);
extern int ctf_func_type_info (ctf_file_t *, ctf_id_t, ctf_funcinfo_t *);
extern int ctf_func_type_args (ctf_file_t *, ctf_id_t, uint32_t, ctf_id_t *);
extern ctf_id_t ctf_lookup_by_name (ctf_file_t *, const char *);
extern ctf_id_t ctf_lookup_by_symbol (ctf_file_t *, unsigned long);
extern ctf_id_t ctf_lookup_variable (ctf_file_t *, const char *);
extern ctf_id_t ctf_type_resolve (ctf_file_t *, ctf_id_t);
extern char *ctf_type_aname (ctf_file_t *, ctf_id_t);
extern char *ctf_type_aname_raw (ctf_file_t *, ctf_id_t);
extern ssize_t ctf_type_lname (ctf_file_t *, ctf_id_t, char *, size_t);
extern char *ctf_type_name (ctf_file_t *, ctf_id_t, char *, size_t);
extern const char *ctf_type_name_raw (ctf_file_t *, ctf_id_t);
extern ssize_t ctf_type_size (ctf_file_t *, ctf_id_t);
extern ssize_t ctf_type_align (ctf_file_t *, ctf_id_t);
extern int ctf_type_kind (ctf_file_t *, ctf_id_t);
extern int ctf_type_kind_forwarded (ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_type_reference (ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_type_pointer (ctf_file_t *, ctf_id_t);
extern int ctf_type_encoding (ctf_file_t *, ctf_id_t, ctf_encoding_t *);
extern int ctf_type_visit (ctf_file_t *, ctf_id_t, ctf_visit_f *, void *);
extern int ctf_type_cmp (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
extern int ctf_type_compat (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
extern int ctf_member_info (ctf_file_t *, ctf_id_t, const char *,
ctf_membinfo_t *);
extern int ctf_array_info (ctf_file_t *, ctf_id_t, ctf_arinfo_t *);
extern const char *ctf_enum_name (ctf_file_t *, ctf_id_t, int);
extern int ctf_enum_value (ctf_file_t *, ctf_id_t, const char *, int *);
extern void ctf_label_set (ctf_file_t *, const char *);
extern const char *ctf_label_get (ctf_file_t *);
extern const char *ctf_label_topmost (ctf_file_t *);
extern int ctf_label_info (ctf_file_t *, const char *, ctf_lblinfo_t *);
extern int ctf_member_count (ctf_file_t *, ctf_id_t);
extern int ctf_member_iter (ctf_file_t *, ctf_id_t, ctf_member_f *, void *);
extern ssize_t ctf_member_next (ctf_file_t *, ctf_id_t, ctf_next_t **,
const char **name, ctf_id_t *membtype);
extern int ctf_enum_iter (ctf_file_t *, ctf_id_t, ctf_enum_f *, void *);
extern const char *ctf_enum_next (ctf_file_t *, ctf_id_t, ctf_next_t **,
int *);
extern int ctf_type_iter (ctf_file_t *, ctf_type_f *, void *);
extern int ctf_type_iter_all (ctf_file_t *, ctf_type_all_f *, void *);
extern ctf_id_t ctf_type_next (ctf_file_t *, ctf_next_t **,
int *flag, int want_hidden);
extern int ctf_label_iter (ctf_file_t *, ctf_label_f *, void *);
extern int ctf_label_next (ctf_file_t *, ctf_next_t **, const char **); /* TBD */
extern int ctf_variable_iter (ctf_file_t *, ctf_variable_f *, void *);
extern ctf_id_t ctf_variable_next (ctf_file_t *, ctf_next_t **,
const char **);
extern int ctf_archive_iter (const ctf_archive_t *, ctf_archive_member_f *,
void *);
extern ctf_file_t *ctf_archive_next (const ctf_archive_t *, ctf_next_t **,
const char **, int skip_parent, int *errp);
/* This function alone does not currently operate on CTF files masquerading
as archives, and returns -EINVAL: the raw data is no longer available. It is
expected to be used only by archiving tools, in any case, which have no need
to deal with non-archives at all. */
extern int ctf_archive_raw_iter (const ctf_archive_t *,
ctf_archive_raw_member_f *, void *);
extern char *ctf_dump (ctf_file_t *, ctf_dump_state_t **state,
ctf_sect_names_t sect, ctf_dump_decorate_f *,
void *arg);
extern ctf_id_t ctf_add_array (ctf_file_t *, uint32_t,
const ctf_arinfo_t *);
extern ctf_id_t ctf_add_const (ctf_file_t *, uint32_t, ctf_id_t);
extern ctf_id_t ctf_add_enum_encoded (ctf_file_t *, uint32_t, const char *,
const ctf_encoding_t *);
extern ctf_id_t ctf_add_enum (ctf_file_t *, uint32_t, const char *);
extern ctf_id_t ctf_add_float (ctf_file_t *, uint32_t,
const char *, const ctf_encoding_t *);
extern ctf_id_t ctf_add_forward (ctf_file_t *, uint32_t, const char *,
uint32_t);
extern ctf_id_t ctf_add_function (ctf_file_t *, uint32_t,
const ctf_funcinfo_t *, const ctf_id_t *);
extern ctf_id_t ctf_add_integer (ctf_file_t *, uint32_t, const char *,
const ctf_encoding_t *);
extern ctf_id_t ctf_add_slice (ctf_file_t *, uint32_t, ctf_id_t, const ctf_encoding_t *);
extern ctf_id_t ctf_add_pointer (ctf_file_t *, uint32_t, ctf_id_t);
extern ctf_id_t ctf_add_type (ctf_file_t *, ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_add_typedef (ctf_file_t *, uint32_t, const char *,
ctf_id_t);
extern ctf_id_t ctf_add_restrict (ctf_file_t *, uint32_t, ctf_id_t);
extern ctf_id_t ctf_add_struct (ctf_file_t *, uint32_t, const char *);
extern ctf_id_t ctf_add_union (ctf_file_t *, uint32_t, const char *);
extern ctf_id_t ctf_add_struct_sized (ctf_file_t *, uint32_t, const char *,
size_t);
extern ctf_id_t ctf_add_union_sized (ctf_file_t *, uint32_t, const char *,
size_t);
extern ctf_id_t ctf_add_volatile (ctf_file_t *, uint32_t, ctf_id_t);
extern int ctf_add_enumerator (ctf_file_t *, ctf_id_t, const char *, int);
extern int ctf_add_member (ctf_file_t *, ctf_id_t, const char *, ctf_id_t);
extern int ctf_add_member_offset (ctf_file_t *, ctf_id_t, const char *,
ctf_id_t, unsigned long);
extern int ctf_add_member_encoded (ctf_file_t *, ctf_id_t, const char *,
ctf_id_t, unsigned long,
const ctf_encoding_t);
extern int ctf_add_variable (ctf_file_t *, const char *, ctf_id_t);
extern int ctf_set_array (ctf_file_t *, ctf_id_t, const ctf_arinfo_t *);
extern ctf_file_t *ctf_create (int *);
extern int ctf_update (ctf_file_t *);
extern ctf_snapshot_id_t ctf_snapshot (ctf_file_t *);
extern int ctf_rollback (ctf_file_t *, ctf_snapshot_id_t);
extern int ctf_discard (ctf_file_t *);
extern int ctf_write (ctf_file_t *, int);
extern int ctf_gzwrite (ctf_file_t *fp, gzFile fd);
extern int ctf_compress_write (ctf_file_t * fp, int fd);
extern unsigned char *ctf_write_mem (ctf_file_t *, size_t *, size_t threshold);
/* The ctf_link interfaces are not stable yet. No guarantees! */
extern int ctf_link_add_ctf (ctf_file_t *, ctf_archive_t *, const char *);
extern int ctf_link (ctf_file_t *, int share_mode);
typedef const char *ctf_link_strtab_string_f (uint32_t *offset, void *arg);
extern int ctf_link_add_strtab (ctf_file_t *, ctf_link_strtab_string_f *,
void *);
typedef ctf_link_sym_t *ctf_link_iter_symbol_f (ctf_link_sym_t *dest,
void *arg);
extern int ctf_link_shuffle_syms (ctf_file_t *, ctf_link_iter_symbol_f *,
void *);
extern unsigned char *ctf_link_write (ctf_file_t *, size_t *size,
size_t threshold);
/* Specialist linker functions. These functions are not used by ld, but can be
used by other programs making use of the linker machinery for other purposes
to customize its output. */
extern int ctf_link_add_cu_mapping (ctf_file_t *, const char *from,
const char *to);
typedef char *ctf_link_memb_name_changer_f (ctf_file_t *,
const char *, void *);
extern void ctf_link_set_memb_name_changer
(ctf_file_t *, ctf_link_memb_name_changer_f *, void *);
extern void ctf_setdebug (int debug);
extern int ctf_getdebug (void);
#ifdef __cplusplus
}
#endif
#endif /* _CTF_API_H */
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