mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
a0486bac41
- Use of nonportable <endian.h> - Use of qsort_r - Use of zlib without appropriate magic to pull in the binutils zlib - Use of off64_t without checking (fixed by dropping the unused fields that need off64_t entirely) - signedness problems due to long being too short a type on 32-bit platforms: ctf_id_t is now 'unsigned long', and CTF_ERR must be used only for functions that return ctf_id_t - One lingering use of bzero() and of <sys/errno.h> All fixed, using code from gnulib where possible. Relatedly, set cts_size in a couple of places it was missed (string table and symbol table loading upon ctf_bfdopen()). binutils/ * objdump.c (make_ctfsect): Drop cts_type, cts_flags, and cts_offset. * readelf.c (shdr_to_ctf_sect): Likewise. include/ * ctf-api.h (ctf_sect_t): Drop cts_type, cts_flags, and cts_offset. (ctf_id_t): This is now an unsigned type. (CTF_ERR): Cast it to ctf_id_t. Note that it should only be used for ctf_id_t-returning functions. libctf/ * Makefile.am (ZLIB): New. (ZLIBINC): Likewise. (AM_CFLAGS): Use them. (libctf_a_LIBADD): New, for LIBOBJS. * configure.ac: Check for zlib, endian.h, and qsort_r. * ctf-endian.h: New, providing htole64 and le64toh. * swap.h: Code style fixes. (bswap_identity_64): New. * qsort_r.c: New, from gnulib (with one added #include). * ctf-decls.h: New, providing a conditional qsort_r declaration, and unconditional definitions of MIN and MAX. * ctf-impl.h: Use it. Do not use <sys/errno.h>. (ctf_set_errno): Now returns unsigned long. * ctf-util.c (ctf_set_errno): Adjust here too. * ctf-archive.c: Use ctf-endian.h. (ctf_arc_open_by_offset): Use memset, not bzero. Drop cts_type, cts_flags and cts_offset. (ctf_arc_write): Drop debugging dependent on the size of off_t. * ctf-create.c: Provide a definition of roundup if not defined. (ctf_create): Drop cts_type, cts_flags and cts_offset. (ctf_add_reftype): Do not check if type IDs are below zero. (ctf_add_slice): Likewise. (ctf_add_typedef): Likewise. (ctf_add_member_offset): Cast error-returning ssize_t's to size_t when known error-free. Drop CTF_ERR usage for functions returning int. (ctf_add_member_encoded): Drop CTF_ERR usage for functions returning int. (ctf_add_variable): Likewise. (enumcmp): Likewise. (enumadd): Likewise. (membcmp): Likewise. (ctf_add_type): Likewise. Cast error-returning ssize_t's to size_t when known error-free. * ctf-dump.c (ctf_is_slice): Drop CTF_ERR usage for functions returning int: use CTF_ERR for functions returning ctf_type_id. (ctf_dump_label): Likewise. (ctf_dump_objts): Likewise. * ctf-labels.c (ctf_label_topmost): Likewise. (ctf_label_iter): Likewise. (ctf_label_info): Likewise. * ctf-lookup.c (ctf_func_args): Likewise. * ctf-open.c (upgrade_types): Cast to size_t where appropriate. (ctf_bufopen): Likewise. Use zlib types as needed. * ctf-types.c (ctf_member_iter): Drop CTF_ERR usage for functions returning int. (ctf_enum_iter): Likewise. (ctf_type_size): Likewise. (ctf_type_align): Likewise. Cast to size_t where appropriate. (ctf_type_kind_unsliced): Likewise. (ctf_type_kind): Likewise. (ctf_type_encoding): Likewise. (ctf_member_info): Likewise. (ctf_array_info): Likewise. (ctf_enum_value): Likewise. (ctf_type_rvisit): Likewise. * ctf-open-bfd.c (ctf_bfdopen): Drop cts_type, cts_flags and cts_offset. (ctf_simple_open): Likewise. (ctf_bfdopen_ctfsect): Likewise. Set cts_size properly. * Makefile.in: Regenerate. * aclocal.m4: Likewise. * config.h: Likewise. * configure: Likewise.
387 lines
15 KiB
C
387 lines
15 KiB
C
/* Implementation header.
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Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of libctf.
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libctf is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef _CTF_IMPL_H
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#define _CTF_IMPL_H
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#include "config.h"
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#include <errno.h>
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#include "ctf-decls.h"
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#include <ctf-api.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <limits.h>
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#include <ctype.h>
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#include <elf.h>
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#include <bfd.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Compiler attributes. */
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#if defined (__GNUC__)
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/* GCC. We assume that all compilers claiming to be GCC support sufficiently
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many GCC attributes that the code below works. If some non-GCC compilers
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masquerading as GCC in fact do not implement these attributes, version checks
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may be required. */
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/* We use the _libctf_*_ pattern to avoid clashes with any future attribute
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macros glibc may introduce, which have names of the pattern
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__attribute_blah__. */
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#define _libctf_printflike_(string_index,first_to_check) \
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__attribute__ ((__format__ (__printf__, (string_index), (first_to_check))))
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#define _libctf_unlikely_(x) __builtin_expect ((x), 0)
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#define _libctf_unused_ __attribute__ ((__unused__))
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#define _libctf_malloc_ __attribute__((__malloc__))
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#endif
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/* libctf in-memory state. */
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typedef struct ctf_fixed_hash ctf_hash_t; /* Private to ctf-hash.c. */
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typedef struct ctf_dynhash ctf_dynhash_t; /* Private to ctf-hash.c. */
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typedef struct ctf_strs
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{
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const char *cts_strs; /* Base address of string table. */
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size_t cts_len; /* Size of string table in bytes. */
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} ctf_strs_t;
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typedef struct ctf_dmodel
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{
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const char *ctd_name; /* Data model name. */
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int ctd_code; /* Data model code. */
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size_t ctd_pointer; /* Size of void * in bytes. */
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size_t ctd_char; /* Size of char in bytes. */
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size_t ctd_short; /* Size of short in bytes. */
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size_t ctd_int; /* Size of int in bytes. */
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size_t ctd_long; /* Size of long in bytes. */
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} ctf_dmodel_t;
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typedef struct ctf_lookup
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{
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const char *ctl_prefix; /* String prefix for this lookup. */
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size_t ctl_len; /* Length of prefix string in bytes. */
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ctf_hash_t *ctl_hash; /* Pointer to hash table for lookup. */
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} ctf_lookup_t;
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typedef struct ctf_fileops
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{
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uint32_t (*ctfo_get_kind) (uint32_t);
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uint32_t (*ctfo_get_root) (uint32_t);
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uint32_t (*ctfo_get_vlen) (uint32_t);
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ssize_t (*ctfo_get_ctt_size) (const ctf_file_t *, const ctf_type_t *,
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ssize_t *, ssize_t *);
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ssize_t (*ctfo_get_vbytes) (unsigned short, ssize_t, size_t);
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} ctf_fileops_t;
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typedef struct ctf_list
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{
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struct ctf_list *l_prev; /* Previous pointer or tail pointer. */
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struct ctf_list *l_next; /* Next pointer or head pointer. */
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} ctf_list_t;
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typedef enum
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{
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CTF_PREC_BASE,
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CTF_PREC_POINTER,
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CTF_PREC_ARRAY,
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CTF_PREC_FUNCTION,
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CTF_PREC_MAX
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} ctf_decl_prec_t;
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typedef struct ctf_decl_node
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{
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ctf_list_t cd_list; /* Linked list pointers. */
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ctf_id_t cd_type; /* Type identifier. */
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uint32_t cd_kind; /* Type kind. */
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uint32_t cd_n; /* Type dimension if array. */
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} ctf_decl_node_t;
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typedef struct ctf_decl
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{
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ctf_list_t cd_nodes[CTF_PREC_MAX]; /* Declaration node stacks. */
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int cd_order[CTF_PREC_MAX]; /* Storage order of decls. */
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ctf_decl_prec_t cd_qualp; /* Qualifier precision. */
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ctf_decl_prec_t cd_ordp; /* Ordered precision. */
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char *cd_buf; /* Buffer for output. */
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int cd_err; /* Saved error value. */
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int cd_enomem; /* Nonzero if OOM during printing. */
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} ctf_decl_t;
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typedef struct ctf_dmdef
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{
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ctf_list_t dmd_list; /* List forward/back pointers. */
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char *dmd_name; /* Name of this member. */
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ctf_id_t dmd_type; /* Type of this member (for sou). */
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unsigned long dmd_offset; /* Offset of this member in bits (for sou). */
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int dmd_value; /* Value of this member (for enum). */
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} ctf_dmdef_t;
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typedef struct ctf_dtdef
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{
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ctf_list_t dtd_list; /* List forward/back pointers. */
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char *dtd_name; /* Name associated with definition (if any). */
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ctf_id_t dtd_type; /* Type identifier for this definition. */
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ctf_type_t dtd_data; /* Type node (see <ctf.h>). */
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union
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{
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ctf_list_t dtu_members; /* struct, union, or enum */
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ctf_arinfo_t dtu_arr; /* array */
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ctf_encoding_t dtu_enc; /* integer or float */
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ctf_id_t *dtu_argv; /* function */
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ctf_slice_t dtu_slice; /* slice */
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} dtd_u;
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} ctf_dtdef_t;
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typedef struct ctf_dvdef
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{
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ctf_list_t dvd_list; /* List forward/back pointers. */
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char *dvd_name; /* Name associated with variable. */
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ctf_id_t dvd_type; /* Type of variable. */
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unsigned long dvd_snapshots; /* Snapshot count when inserted. */
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} ctf_dvdef_t;
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typedef struct ctf_bundle
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{
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ctf_file_t *ctb_file; /* CTF container handle. */
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ctf_id_t ctb_type; /* CTF type identifier. */
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ctf_dtdef_t *ctb_dtd; /* CTF dynamic type definition (if any). */
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} ctf_bundle_t;
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/* The ctf_file is the structure used to represent a CTF container to library
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clients, who see it only as an opaque pointer. Modifications can therefore
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be made freely to this structure without regard to client versioning. The
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ctf_file_t typedef appears in <ctf-api.h> and declares a forward tag.
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NOTE: ctf_update() requires that everything inside of ctf_file either be an
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immediate value, a pointer to dynamically allocated data *outside* of the
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ctf_file itself, or a pointer to statically allocated data. If you add a
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pointer to ctf_file that points to something within the ctf_file itself,
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you must make corresponding changes to ctf_update(). */
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struct ctf_file
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{
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const ctf_fileops_t *ctf_fileops; /* Version-specific file operations. */
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ctf_sect_t ctf_data; /* CTF data from object file. */
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ctf_sect_t ctf_symtab; /* Symbol table from object file. */
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ctf_sect_t ctf_strtab; /* String table from object file. */
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void *ctf_data_mmapped; /* CTF data we mmapped, to free later. */
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size_t ctf_data_mmapped_len; /* Length of CTF data we mmapped. */
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ctf_hash_t *ctf_structs; /* Hash table of struct types. */
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ctf_hash_t *ctf_unions; /* Hash table of union types. */
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ctf_hash_t *ctf_enums; /* Hash table of enum types. */
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ctf_hash_t *ctf_names; /* Hash table of remaining type names. */
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ctf_lookup_t ctf_lookups[5]; /* Pointers to hashes for name lookup. */
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ctf_strs_t ctf_str[2]; /* Array of string table base and bounds. */
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const unsigned char *ctf_base; /* Base of CTF header + uncompressed buffer. */
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const unsigned char *ctf_buf; /* Uncompressed CTF data buffer. */
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size_t ctf_size; /* Size of CTF header + uncompressed data. */
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uint32_t *ctf_sxlate; /* Translation table for symtab entries. */
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unsigned long ctf_nsyms; /* Number of entries in symtab xlate table. */
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uint32_t *ctf_txlate; /* Translation table for type IDs. */
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uint32_t *ctf_ptrtab; /* Translation table for pointer-to lookups. */
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struct ctf_varent *ctf_vars; /* Sorted variable->type mapping. */
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unsigned long ctf_nvars; /* Number of variables in ctf_vars. */
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unsigned long ctf_typemax; /* Maximum valid type ID number. */
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const ctf_dmodel_t *ctf_dmodel; /* Data model pointer (see above). */
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struct ctf_file *ctf_parent; /* Parent CTF container (if any). */
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const char *ctf_parlabel; /* Label in parent container (if any). */
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const char *ctf_parname; /* Basename of parent (if any). */
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char *ctf_dynparname; /* Dynamically allocated name of parent. */
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uint32_t ctf_parmax; /* Highest type ID of a parent type. */
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uint32_t ctf_refcnt; /* Reference count (for parent links). */
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uint32_t ctf_flags; /* Libctf flags (see below). */
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int ctf_errno; /* Error code for most recent error. */
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int ctf_version; /* CTF data version. */
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ctf_dynhash_t *ctf_dthash; /* Hash of dynamic type definitions. */
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ctf_dynhash_t *ctf_dtbyname; /* DTDs, indexed by name. */
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ctf_list_t ctf_dtdefs; /* List of dynamic type definitions. */
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ctf_dynhash_t *ctf_dvhash; /* Hash of dynamic variable mappings. */
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ctf_list_t ctf_dvdefs; /* List of dynamic variable definitions. */
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size_t ctf_dtvstrlen; /* Total length of dynamic type+var strings. */
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unsigned long ctf_dtnextid; /* Next dynamic type id to assign. */
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unsigned long ctf_dtoldid; /* Oldest id that has been committed. */
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unsigned long ctf_snapshots; /* ctf_snapshot() plus ctf_update() count. */
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unsigned long ctf_snapshot_lu; /* ctf_snapshot() call count at last update. */
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ctf_archive_t *ctf_archive; /* Archive this ctf_file_t came from. */
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char *ctf_tmp_typeslice; /* Storage for slicing up type names. */
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size_t ctf_tmp_typeslicelen; /* Size of the typeslice. */
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void *ctf_specific; /* Data for ctf_get/setspecific(). */
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};
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/* An abstraction over both a ctf_file_t and a ctf_archive_t. */
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struct ctf_archive_internal
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{
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int ctfi_is_archive;
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ctf_file_t *ctfi_file;
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struct ctf_archive *ctfi_archive;
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ctf_sect_t ctfi_symsect;
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ctf_sect_t ctfi_strsect;
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void *ctfi_data;
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bfd *ctfi_abfd; /* Optional source of section data. */
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void (*ctfi_bfd_close) (struct ctf_archive_internal *);
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};
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/* Return x rounded up to an alignment boundary.
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eg, P2ROUNDUP(0x1234, 0x100) == 0x1300 (0x13*align)
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eg, P2ROUNDUP(0x5600, 0x100) == 0x5600 (0x56*align) */
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#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
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/* * If an offs is not aligned already then round it up and align it. */
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#define LCTF_ALIGN_OFFS(offs, align) ((offs + (align - 1)) & ~(align - 1))
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#define LCTF_TYPE_ISPARENT(fp, id) ((id) <= fp->ctf_parmax)
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#define LCTF_TYPE_ISCHILD(fp, id) ((id) > fp->ctf_parmax)
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#define LCTF_TYPE_TO_INDEX(fp, id) ((id) & (fp->ctf_parmax))
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#define LCTF_INDEX_TO_TYPE(fp, id, child) (child ? ((id) | (fp->ctf_parmax+1)) : \
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(id))
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#define LCTF_INDEX_TO_TYPEPTR(fp, i) \
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((ctf_type_t *)((uintptr_t)(fp)->ctf_buf + (fp)->ctf_txlate[(i)]))
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#define LCTF_INFO_KIND(fp, info) ((fp)->ctf_fileops->ctfo_get_kind(info))
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#define LCTF_INFO_ISROOT(fp, info) ((fp)->ctf_fileops->ctfo_get_root(info))
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#define LCTF_INFO_VLEN(fp, info) ((fp)->ctf_fileops->ctfo_get_vlen(info))
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#define LCTF_VBYTES(fp, kind, size, vlen) \
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((fp)->ctf_fileops->ctfo_get_vbytes(kind, size, vlen))
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static inline ssize_t ctf_get_ctt_size (const ctf_file_t *fp,
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const ctf_type_t *tp,
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ssize_t *sizep,
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ssize_t *incrementp)
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{
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return (fp->ctf_fileops->ctfo_get_ctt_size (fp, tp, sizep, incrementp));
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}
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#define LCTF_CHILD 0x0001 /* CTF container is a child */
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#define LCTF_RDWR 0x0002 /* CTF container is writable */
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#define LCTF_DIRTY 0x0004 /* CTF container has been modified */
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extern const ctf_type_t *ctf_lookup_by_id (ctf_file_t **, ctf_id_t);
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typedef unsigned int (*ctf_hash_fun) (const void *ptr);
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extern unsigned int ctf_hash_integer (const void *ptr);
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extern unsigned int ctf_hash_string (const void *ptr);
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typedef int (*ctf_hash_eq_fun) (const void *, const void *);
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extern int ctf_hash_eq_integer (const void *, const void *);
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extern int ctf_hash_eq_string (const void *, const void *);
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typedef void (*ctf_hash_free_fun) (void *);
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extern ctf_hash_t *ctf_hash_create (unsigned long, ctf_hash_fun, ctf_hash_eq_fun);
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extern int ctf_hash_insert_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
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extern int ctf_hash_define_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
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extern ctf_id_t ctf_hash_lookup_type (ctf_hash_t *, ctf_file_t *, const char *);
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extern uint32_t ctf_hash_size (const ctf_hash_t *);
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extern void ctf_hash_destroy (ctf_hash_t *);
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extern ctf_dynhash_t *ctf_dynhash_create (ctf_hash_fun, ctf_hash_eq_fun,
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ctf_hash_free_fun, ctf_hash_free_fun);
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extern int ctf_dynhash_insert (ctf_dynhash_t *, void *, void *);
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extern void ctf_dynhash_remove (ctf_dynhash_t *, const void *);
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extern void *ctf_dynhash_lookup (ctf_dynhash_t *, const void *);
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extern void ctf_dynhash_destroy (ctf_dynhash_t *);
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#define ctf_list_prev(elem) ((void *)(((ctf_list_t *)(elem))->l_prev))
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#define ctf_list_next(elem) ((void *)(((ctf_list_t *)(elem))->l_next))
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extern void ctf_list_append (ctf_list_t *, void *);
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extern void ctf_list_prepend (ctf_list_t *, void *);
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extern void ctf_list_delete (ctf_list_t *, void *);
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extern void ctf_dtd_insert (ctf_file_t *, ctf_dtdef_t *);
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extern void ctf_dtd_delete (ctf_file_t *, ctf_dtdef_t *);
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extern ctf_dtdef_t *ctf_dtd_lookup (const ctf_file_t *, ctf_id_t);
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extern ctf_dtdef_t *ctf_dynamic_type (const ctf_file_t *, ctf_id_t);
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extern void ctf_dvd_insert (ctf_file_t *, ctf_dvdef_t *);
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extern void ctf_dvd_delete (ctf_file_t *, ctf_dvdef_t *);
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extern ctf_dvdef_t *ctf_dvd_lookup (const ctf_file_t *, const char *);
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extern void ctf_decl_init (ctf_decl_t *);
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extern void ctf_decl_fini (ctf_decl_t *);
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extern void ctf_decl_push (ctf_decl_t *, ctf_file_t *, ctf_id_t);
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_libctf_printflike_ (2, 3)
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extern void ctf_decl_sprintf (ctf_decl_t *, const char *, ...);
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extern char *ctf_decl_buf (ctf_decl_t *cd);
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extern const char *ctf_strraw (ctf_file_t *, uint32_t);
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extern const char *ctf_strptr (ctf_file_t *, uint32_t);
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extern struct ctf_archive *ctf_arc_open_internal (const char *, int *);
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extern struct ctf_archive *ctf_arc_bufopen (const void *, size_t, int *);
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extern void ctf_arc_close_internal (struct ctf_archive *);
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extern void *ctf_set_open_errno (int *, int);
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extern unsigned long ctf_set_errno (ctf_file_t *, int);
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_libctf_malloc_
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extern void *ctf_data_alloc (size_t);
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extern void ctf_data_free (void *, size_t);
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extern void ctf_data_protect (void *, size_t);
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_libctf_malloc_
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extern void *ctf_mmap (size_t length, size_t offset, int fd);
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extern void ctf_munmap (void *, size_t);
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extern ssize_t ctf_pread (int fd, void *buf, ssize_t count, off_t offset);
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_libctf_malloc_
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extern void *ctf_alloc (size_t);
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extern void ctf_free (void *);
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_libctf_malloc_
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extern char *ctf_strdup (const char *);
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extern char *ctf_str_append (char *, const char *);
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extern const char *ctf_strerror (int);
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extern ctf_id_t ctf_type_resolve_unsliced (ctf_file_t *, ctf_id_t);
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extern int ctf_type_kind_unsliced (ctf_file_t *, ctf_id_t);
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_libctf_printflike_ (1, 2)
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extern void ctf_dprintf (const char *, ...);
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extern void libctf_init_debug (void);
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extern Elf64_Sym *ctf_sym_to_elf64 (const Elf32_Sym *src, Elf64_Sym *dst);
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extern const char *ctf_lookup_symbol_name (ctf_file_t *fp, unsigned long symidx);
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/* Variables, all underscore-prepended. */
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extern const char _CTF_SECTION[]; /* name of CTF ELF section */
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extern const char _CTF_NULLSTR[]; /* empty string */
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extern int _libctf_version; /* library client version */
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extern int _libctf_debug; /* debugging messages enabled */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _CTF_IMPL_H */
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