/* Implementation header.
- Copyright (C) 2019-2020 Free Software Foundation, Inc.
+ Copyright (C) 2019-2021 Free Software Foundation, Inc.
This file is part of libctf.
#include <sys/types.h>
#include <stdlib.h>
#include <stdarg.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
+#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <elf.h>
{
#endif
+/* Tuning. */
+
+/* The proportion of symtypetab entries which must be pads before we consider it
+ worthwhile to emit a symtypetab section as an index. Indexes cost time to
+ look up, but save space all told. Do not set to 1, since this will cause
+ indexes to be eschewed completely, even in child dicts, at considerable space
+ cost. */
+#define CTF_INDEX_PAD_THRESHOLD .75
+
/* Compiler attributes. */
#if defined (__GNUC__)
#define _libctf_unlikely_(x) __builtin_expect ((x), 0)
#define _libctf_unused_ __attribute__ ((__unused__))
#define _libctf_malloc_ __attribute__((__malloc__))
+#define _libctf_nonnull_(params) __attribute__((__nonnull__ params))
#else
#define _libctf_unlikely_(x) (x)
#define _libctf_unused_
#define _libctf_malloc_
+#define _libctf_nonnull_(params)
#define __extension__
#endif
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;
+ size_t dtd_vlen_alloc; /* Total vlen space allocated. */
+ unsigned char *dtd_vlen; /* Variable-length data for this type. */
} ctf_dtdef_t;
typedef struct ctf_dvdef
uint32_t *caf_ref; /* A single ref to this string. */
} ctf_str_atom_ref_t;
+/* A single linker-provided symbol, during symbol addition, possibly before we
+ have been given external strtab refs. */
+typedef struct ctf_in_flight_dynsym
+{
+ ctf_list_t cid_list; /* List forward/back pointers. */
+ ctf_link_sym_t cid_sym; /* The linker-known symbol. */
+} ctf_in_flight_dynsym_t;
+
/* The structure used as the key in a ctf_link_type_mapping. The value is a
type index, not a type ID. */
/* A set (a hash) of hash values of conflicting types. */
ctf_dynset_t *cd_conflicting_types;
+ /* A hash mapping fp *'s of inputs to their input_nums. Used only by
+ functions outside the core ctf_dedup / ctf_dedup_emit machinery which do
+ not take an inputs array. */
+ ctf_dynhash_t *cd_input_nums;
+
/* Maps type hashes to ctf_id_t's in this dictionary. Populated only at
emission time, in the dictionary where emission is taking place. */
ctf_dynhash_t *cd_output_emission_hashes;
ctf_dict_t typedef appears in <ctf-api.h> and declares a forward tag.
(A ctf_file_t typedef also appears there, for historical reasons.)
- NOTE: ctf_serialize() requires that everything inside of ctf_dict either be
- an immediate value, a pointer to dynamically allocated data *outside* of the
- ctf_dict itself, or a pointer to statically allocated data. If you add a
- pointer to ctf_dict that points to something within the ctf_dict itself, you
- must make corresponding changes to ctf_serialize(). */
+ NOTE: ctf_serialize requires that everything inside of ctf_dict either be an
+ immediate value, a pointer to dynamically allocated data *outside* of the
+ ctf_dict itself, a pointer to statically allocated data, or specially handled
+ in ctf_serialize. If you add a pointer to ctf_dict that points to something
+ within the ctf_dict itself, you must make corresponding changes to
+ ctf_serialize. */
struct ctf_dict
{
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. */
+ int ctf_symsect_little_endian; /* Endianness of the ctf_symtab. */
+ ctf_dynhash_t *ctf_symhash; /* (partial) hash, symsect name -> idx. */
+ size_t ctf_symhash_latest; /* Amount of symsect scanned so far. */
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. */
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. */
+ ctf_dynhash_t *ctf_str_atoms; /* Hash table of ctf_str_atoms_t. */
+ ctf_dynset_t *ctf_str_pending_ref; /* Locations awaiting ref addition. */
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. */
+ uint32_t *ctf_sxlate; /* Translation table for unindexed symtypetab
+ 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. */
+ uint32_t *ctf_pptrtab; /* Parent types pointed to by child dicts. */
+ size_t ctf_pptrtab_len; /* Num types storable in pptrtab currently. */
+ uint32_t ctf_pptrtab_typemax; /* Max child type when pptrtab last updated. */
+ uint32_t *ctf_funcidx_names; /* Name of each function symbol in symtypetab
+ (if indexed). */
+ uint32_t *ctf_objtidx_names; /* Likewise, for object symbols. */
+ size_t ctf_nfuncidx; /* Number of funcidx entries. */
+ uint32_t *ctf_funcidx_sxlate; /* Offsets into funcinfo for a given funcidx. */
+ uint32_t *ctf_objtidx_sxlate; /* Likewise, for ctf_objtidx. */
+ size_t ctf_nobjtidx; /* Number of objtidx entries. */
+ ctf_dynhash_t *ctf_objthash; /* name -> type ID. */
+ ctf_dynhash_t *ctf_funchash; /* name -> CTF_K_FUNCTION type ID. */
+
+ /* The next three are linker-derived state found in ctf_link targets only. */
+
+ ctf_dynhash_t *ctf_dynsyms; /* Symbol info from ctf_link_shuffle_syms. */
+ ctf_link_sym_t **ctf_dynsymidx; /* Indexes ctf_dynsyms by symidx. */
+ uint32_t ctf_dynsymmax; /* Maximum ctf_dynsym index. */
+ ctf_list_t ctf_in_flight_dynsyms; /* Dynsyms during accumulation. */
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. */
ctf_dynhash_t *ctf_link_inputs; /* Inputs to this link. */
ctf_dynhash_t *ctf_link_outputs; /* Additional outputs from this link. */
- /* Map input types to output types: populated in each output dict.
- Key is a ctf_link_type_key_t: value is a type ID. Used by
- nondeduplicating links and ad-hoc ctf_add_type calls only. */
+ /* Map input types to output types for ctf_add_type. Key is a
+ ctf_link_type_key_t: value is a type ID. */
ctf_dynhash_t *ctf_link_type_mapping;
/* Map input CU names to output CTF dict names: populated in the top-level
individual value members are shared with ctf_link_in_cu_mapping. */
ctf_dynhash_t *ctf_link_out_cu_mapping;
- /* CTF linker flags. */
+ /* CTF linker flags. Set on the parent output dict (the one passed to
+ ctf_link). Only respected when LCTF_LINKING set in ctf_flags. */
int ctf_link_flags;
/* Allow the caller to change the name of link archive members. */
int ctfi_unmap_on_close;
ctf_dict_t *ctfi_dict;
struct ctf_archive *ctfi_archive;
+ ctf_dynhash_t *ctfi_dicts; /* Dicts we have opened and cached. */
+ ctf_dict_t *ctfi_crossdict_cache; /* Cross-dict caching. */
+ ctf_dict_t **ctfi_symdicts; /* Array of index -> ctf_dict_t *. */
+ ctf_dynhash_t *ctfi_symnamedicts; /* Hash of name -> ctf_dict_t *. */
ctf_sect_t ctfi_symsect;
+ int ctfi_symsect_little_endian; /* -1 for unknown / do not set. */
ctf_sect_t ctfi_strsect;
int ctfi_free_symsect;
int ctfi_free_strsect;
void *ctfi_data;
- bfd *ctfi_abfd; /* Optional source of section data. */
+ bfd *ctfi_abfd; /* Optional source of section data. */
void (*ctfi_bfd_close) (struct ctf_archive_internal *);
};
ctf_id_t ctn_type;
ssize_t ctn_size;
ssize_t ctn_increment;
+ const ctf_type_t *ctn_tp;
uint32_t ctn_n;
+
+ /* Some iterators contain other iterators, in addition to their other
+ state. */
+ ctf_next_t *ctn_next;
+
/* We can save space on this side of things by noting that a dictionary 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;
+ unsigned char *ctn_vlen;
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 dict we can iterate over:
currently dictionaries and archives, dynhashes, and dynsets. */
union
#define LCTF_VBYTES(fp, kind, size, vlen) \
((fp)->ctf_dictops->ctfo_get_vbytes(fp, kind, size, vlen))
-#define LCTF_CHILD 0x0001 /* CTF dict is a child */
-#define LCTF_RDWR 0x0002 /* CTF dict is writable */
-#define LCTF_DIRTY 0x0004 /* CTF dict has been modified */
+#define LCTF_CHILD 0x0001 /* CTF dict is a child. */
+#define LCTF_RDWR 0x0002 /* CTF dict is writable. */
+#define LCTF_DIRTY 0x0004 /* CTF dict has been modified. */
+#define LCTF_LINKING 0x0008 /* CTF link is underway: respect ctf_link_flags. */
extern ctf_names_t *ctf_name_table (ctf_dict_t *, int);
extern const ctf_type_t *ctf_lookup_by_id (ctf_dict_t **, ctf_id_t);
extern ctf_id_t ctf_lookup_by_rawhash (ctf_dict_t *, ctf_names_t *, const char *);
extern void ctf_set_ctl_hashes (ctf_dict_t *);
+extern int ctf_symtab_skippable (ctf_link_sym_t *sym);
+extern int ctf_add_funcobjt_sym (ctf_dict_t *, int is_function,
+ const char *, ctf_id_t);
+
extern ctf_dict_t *ctf_get_dict (ctf_dict_t *fp, ctf_id_t type);
typedef unsigned int (*ctf_hash_fun) (const void *ptr);
extern int ctf_hash_eq_type_key (const void *, const void *);
extern int ctf_hash_eq_type_id_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);
void *);
extern void *ctf_dynhash_iter_find (ctf_dynhash_t *, ctf_hash_iter_find_f,
void *);
+extern int ctf_dynhash_sort_by_name (const ctf_next_hkv_t *,
+ const ctf_next_hkv_t *,
+ void * _libctf_unused_);
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 **,
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 size_t ctf_dynset_elements (ctf_dynset_t *);
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 ctf_id_t ctf_add_reftype (ctf_dict_t *, uint32_t, ctf_id_t,
uint32_t kind);
-extern void ctf_add_type_mapping (ctf_dict_t *src_fp, ctf_id_t src_type,
- ctf_dict_t *dst_fp, ctf_id_t dst_type);
-extern ctf_id_t ctf_type_mapping (ctf_dict_t *src_fp, ctf_id_t src_type,
- ctf_dict_t **dst_fp);
-
extern int ctf_dedup_atoms_init (ctf_dict_t *);
extern int ctf_dedup (ctf_dict_t *, ctf_dict_t **, uint32_t ninputs,
uint32_t *parents, int cu_mapped);
extern ctf_dict_t **ctf_dedup_emit (ctf_dict_t *, ctf_dict_t **,
uint32_t ninputs, uint32_t *parents,
uint32_t *noutputs, int cu_mapped);
+extern ctf_id_t ctf_dedup_type_mapping (ctf_dict_t *fp, ctf_dict_t *src_fp,
+ ctf_id_t src_type);
extern void ctf_decl_init (ctf_decl_t *);
extern void ctf_decl_fini (ctf_decl_t *);
extern void ctf_str_free_atoms (ctf_dict_t *);
extern uint32_t ctf_str_add (ctf_dict_t *, const char *);
extern uint32_t ctf_str_add_ref (ctf_dict_t *, const char *, uint32_t *ref);
+extern uint32_t ctf_str_add_pending (ctf_dict_t *, const char *, uint32_t *);
+extern int ctf_str_move_pending (ctf_dict_t *, uint32_t *, ptrdiff_t);
extern int ctf_str_add_external (ctf_dict_t *, const char *, uint32_t offset);
extern void ctf_str_remove_ref (ctf_dict_t *, const char *, uint32_t *ref);
extern void ctf_str_rollback (ctf_dict_t *, ctf_snapshot_id_t);
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 const ctf_preamble_t *ctf_arc_bufpreamble (const ctf_sect_t *);
extern void *ctf_set_open_errno (int *, int);
extern unsigned long ctf_set_errno (ctf_dict_t *, int);
size_t, const char *);
extern const char *ctf_link_input_name (ctf_dict_t *);
-extern Elf64_Sym *ctf_sym_to_elf64 (const Elf32_Sym *src, Elf64_Sym *dst);
-extern const char *ctf_lookup_symbol_name (ctf_dict_t *fp, unsigned long symidx);
+extern ctf_link_sym_t *ctf_elf32_to_link_sym (ctf_dict_t *fp, ctf_link_sym_t *dst,
+ const Elf32_Sym *src, uint32_t symidx);
+extern ctf_link_sym_t *ctf_elf64_to_link_sym (ctf_dict_t *fp, ctf_link_sym_t *dst,
+ const Elf64_Sym *src, uint32_t symidx);
/* Variables, all underscore-prepended. */
projects / binutils-gdb.git / blobdiff