strip.c revision 441f72d43a9b550baa779fc82f70816da5f74f0e
1441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Discard section not used at runtime from object files. 2441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc. 3441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Written by Ulrich Drepper <drepper@redhat.com>, 2000. 4441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 5441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project This program is Open Source software; you can redistribute it and/or 6441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project modify it under the terms of the Open Software License version 1.0 as 7441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project published by the Open Source Initiative. 8441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 9441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project You should have received a copy of the Open Software License along 10441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project with this program; if not, you may obtain a copy of the Open Software 11441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project License version 1.0 from http://www.opensource.org/licenses/osl.php or 12441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project by writing the Open Source Initiative c/o Lawrence Rosen, Esq., 13441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 3001 King Ranch Road, Ukiah, CA 95482. */ 14441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 15441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#ifdef HAVE_CONFIG_H 16441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project# include <config.h> 17441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#endif 18441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 19441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <argp.h> 20441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <assert.h> 21441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <byteswap.h> 22441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <endian.h> 23441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <error.h> 24441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <fcntl.h> 25441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <gelf.h> 26441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <libelf.h> 27441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <libintl.h> 28441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <locale.h> 29441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <mcheck.h> 30441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdbool.h> 31441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdio.h> 32441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdio_ext.h> 33441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdlib.h> 34441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <string.h> 35441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <unistd.h> 36441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <sys/param.h> 37441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <sys/time.h> 38441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 39441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <elf-knowledge.h> 40441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <libebl.h> 41441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <system.h> 42441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 43441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 44441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Name and version of program. */ 45441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic void print_version (FILE *stream, struct argp_state *state); 46441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectvoid (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version; 47441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 48441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 49441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Values for the parameters which have no short form. */ 50441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#define OPT_REMOVE_COMMENT 0x100 51441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#define OPT_PERMISSIVE 0x101 52441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 53441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 54441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Definitions of arguments for argp functions. */ 55441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const struct argp_option options[] = 56441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 57441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { NULL, 0, NULL, 0, N_("Output selection:") }, 58441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { NULL, 'o', "FILE", 0, N_("Place stripped output into FILE") }, 59441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { NULL, 'f', "FILE", 0, N_("Extract the removed sections into FILE") }, 60441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 61441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { NULL, 0, NULL, 0, N_("Output options:") }, 62441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { "strip-debug", 'g', NULL, 0, N_("Remove all debugging symbols") }, 63441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { "preserve-dates", 'p', NULL, 0, 64441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project N_("Copy modified/access timestamps to the output") }, 65441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { "remove-comment", OPT_REMOVE_COMMENT, NULL, 0, 66441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project N_("Remove .comment section") }, 67441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { "permissive", OPT_PERMISSIVE, NULL, 0, 68441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project N_("Relax a few rules to handle slightly broken ELF files") }, 69441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { NULL, 0, NULL, 0, NULL } 70441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project}; 71441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 72441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Short description of program. */ 73441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const char doc[] = N_("Discard symbols from object files."); 74441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 75441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Strings for arguments in help texts. */ 76441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const char args_doc[] = N_("[FILE...]"); 77441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 78441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Prototype for option handler. */ 79441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic error_t parse_opt (int key, char *arg, struct argp_state *state); 80441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 81441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Function to print some extra text in the help message. */ 82441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic char *more_help (int key, const char *text, void *input); 83441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 84441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Data structure to communicate with argp functions. */ 85441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic struct argp argp = 86441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 87441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project options, parse_opt, args_doc, doc, NULL, more_help 88441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project}; 89441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 90441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 91441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Print symbols in file named FNAME. */ 92441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int process_file (const char *fname); 93441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 94441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Handle one ELF file. */ 95441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int handle_elf (int fd, Elf *elf, const char *prefix, 96441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const char *fname, mode_t mode, struct timeval tvp[2]); 97441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 98441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Handle all files contained in the archive. */ 99441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int handle_ar (int fd, Elf *elf, const char *prefix, const char *fname, 100441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct timeval tvp[2]); 101441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 102441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#define INTERNAL_ERROR(fname) \ 103441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, gettext ("%s: INTERNAL ERROR %d (%s-%s): %s"), \ 104441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fname, __LINE__, VERSION, __DATE__, elf_errmsg (-1)) 105441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 106441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 107441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Name of the output file. */ 108441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const char *output_fname; 109441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 110441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Name of the debug output file. */ 111441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const char *debug_fname; 112441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 113441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* If true output files shall have same date as the input file. */ 114441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic bool preserve_dates; 115441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 116441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* If true .comment sections will be removed. */ 117441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic bool remove_comment; 118441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 119441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* If true remove all debug sections. */ 120441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic bool remove_debug; 121441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 122441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* If true relax some ELF rules for input files. */ 123441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic bool permissive; 124441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 125441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 126441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectint 127441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectmain (int argc, char *argv[]) 128441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 129441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int remaining; 130441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result = 0; 131441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 132441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Make memory leak detection possible. */ 133441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project mtrace (); 134441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 135441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We use no threads here which can interfere with handling a stream. */ 136441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __fsetlocking (stdin, FSETLOCKING_BYCALLER); 137441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __fsetlocking (stdout, FSETLOCKING_BYCALLER); 138441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __fsetlocking (stderr, FSETLOCKING_BYCALLER); 139441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 140441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set locale. */ 141441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project setlocale (LC_ALL, ""); 142441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 143441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Make sure the message catalog can be found. */ 144441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bindtextdomain (PACKAGE, LOCALEDIR); 145441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 146441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Initialize the message catalog. */ 147441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project textdomain (PACKAGE); 148441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 149441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Parse and process arguments. */ 150441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project argp_parse (&argp, argc, argv, 0, &remaining, NULL); 151441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 152441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Tell the library which version we are expecting. */ 153441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_version (EV_CURRENT); 154441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 155441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (remaining == argc) 156441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The user didn't specify a name so we use a.out. */ 157441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = process_file ("a.out"); 158441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 159441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 160441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If we have seen the `-o' or '-f' option there must be exactly one 161441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project input file. */ 162441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((output_fname != NULL || debug_fname != NULL) 163441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && remaining + 1 < argc) 164441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, gettext ("\ 165441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectOnly one input file allowed together with '-o' and '-f'")); 166441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 167441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Process all the remaining files. */ 168441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project do 169441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result |= process_file (argv[remaining]); 170441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (++remaining < argc); 171441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 172441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 173441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 174441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 175441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 176441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 177441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Print the version information. */ 178441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic void 179441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectprint_version (FILE *stream, struct argp_state *state) 180441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 181441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (stream, "strip (%s) %s\n", PACKAGE_NAME, VERSION); 182441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (stream, gettext ("\ 183441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectCopyright (C) %s Red Hat, Inc.\n\ 184441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectThis is free software; see the source for copying conditions. There is NO\n\ 185441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ 186441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project"), "2004"); 187441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper"); 188441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 189441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 190441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 191441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Handle program arguments. */ 192441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic error_t 193441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectparse_opt (int key, char *arg, struct argp_state *state) 194441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 195441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project switch (key) 196441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 197441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case 'f': 198441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_fname = arg; 199441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 200441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 201441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case 'o': 202441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project output_fname = arg; 203441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 204441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 205441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case 'p': 206441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project preserve_dates = true; 207441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 208441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 209441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case OPT_REMOVE_COMMENT: 210441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project remove_comment = true; 211441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 212441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 213441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case 'g': 214441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project remove_debug = true; 215441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 216441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 217441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case OPT_PERMISSIVE: 218441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project permissive = true; 219441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 220441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 221441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project default: 222441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return ARGP_ERR_UNKNOWN; 223441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 224441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 0; 225441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 226441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 227441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 228441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic char * 229441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectmore_help (int key, const char *text, void *input) 230441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 231441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *buf; 232441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 233441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project switch (key) 234441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 235441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case ARGP_KEY_HELP_EXTRA: 236441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We print some extra information. */ 237441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (asprintf (&buf, gettext ("Please report bugs to %s.\n"), 238441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project PACKAGE_BUGREPORT) < 0) 239441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project buf = NULL; 240441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return buf; 241441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 242441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project default: 243441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 244441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 245441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return (char *) text; 246441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 247441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 248441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 249441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int 250441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectprocess_file (const char *fname) 251441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 252441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If we have to preserve the modify and access timestamps get them 253441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project now. We cannot use fstat() after opening the file since the open 254441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project would change the access time. */ 255441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct stat64 pre_st; 256441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct timeval tv[2]; 257441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project again: 258441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (preserve_dates) 259441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 260441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (stat64 (fname, &pre_st) != 0) 261441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 262441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("cannot stat input file \"%s\""), fname); 263441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 264441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 265441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 266441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If we have to preserve the timestamp, we need it in the 267441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project format utimes() understands. */ 268441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project TIMESPEC_TO_TIMEVAL (&tv[0], &pre_st.st_atim); 269441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project TIMESPEC_TO_TIMEVAL (&tv[1], &pre_st.st_mtim); 270441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 271441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 272441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Open the file. */ 273441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int fd = open (fname, O_RDWR); 274441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (fd == -1) 275441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 276441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("while opening \"%s\""), fname); 277441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 278441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 279441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 280441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We always use fstat() even if we called stat() before. This is 281441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project done to make sure the information returned by stat() is for the 282441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project same file. */ 283441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct stat64 st; 284441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (fstat64 (fd, &st) != 0) 285441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 286441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("cannot stat input file \"%s\""), fname); 287441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 288441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 289441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Paranoid mode on. */ 290441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (preserve_dates 291441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && (st.st_ino != pre_st.st_ino || st.st_dev != pre_st.st_dev)) 292441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 293441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We detected a race. Try again. */ 294441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (fd); 295441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto again; 296441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 297441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 298441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Now get the ELF descriptor. */ 299441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *elf = elf_begin (fd, ELF_C_RDWR, NULL); 300441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result; 301441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project switch (elf_kind (elf)) 302441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 303441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case ELF_K_ELF: 304441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = handle_elf (fd, elf, NULL, fname, st.st_mode & ACCESSPERMS, 305441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project preserve_dates ? tv : NULL); 306441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 307441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 308441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project case ELF_K_AR: 309441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* It is not possible to strip the content of an archive direct 310441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project the output to a specific file. */ 311441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (output_fname != NULL)) 312441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 313441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("%s: cannot use -o when stripping archive"), 314441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fname); 315441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 316441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 317441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 318441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = handle_ar (fd, elf, NULL, fname, preserve_dates ? tv : NULL); 319441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 320441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 321441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project default: 322441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("%s: File format not recognized"), fname); 323441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 324441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 325441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 326441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 327441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf_end (elf) != 0)) 328441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 329441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 330441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (fd); 331441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 332441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 333441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 334441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 335441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 336441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Maximum size of array allocated on stack. */ 337441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#define MAX_STACK_ALLOC (400 * 1024) 338441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 339441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 340441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic uint32_t 341441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectcrc32_file (int fd, uint32_t *resp) 342441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 343441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project unsigned char buffer[1024 * 8]; 344441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project uint32_t crc = 0; 345441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ssize_t count; 346441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 347441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We have to rewind. */ 348441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (lseek (fd, 0, SEEK_SET) < 0) 349441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 350441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 351441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while ((count = TEMP_FAILURE_RETRY (read (fd, buffer, sizeof (buffer)))) > 0) 352441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project crc = crc32 (crc, buffer, count); 353441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 354441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *resp = crc; 355441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 356441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return count != 0; 357441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 358441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 359441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 360441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int 361441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projecthandle_elf (int fd, Elf *elf, const char *prefix, const char *fname, 362441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project mode_t mode, struct timeval tvp[2]) 363441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 364441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t prefix_len = prefix == NULL ? 0 : strlen (prefix); 365441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t fname_len = strlen (fname) + 1; 366441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *fullname = alloca (prefix_len + 1 + fname_len); 367441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *cp = fullname; 368441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *newelf; 369441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *debugelf = NULL; 370441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *tmp_debug_fname = NULL; 371441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result = 0; 372441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr ehdr_mem; 373441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr *ehdr; 374441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t shstrndx; 375441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t shnum; 376441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct shdr_info 377441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 378441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Scn *scn; 379441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr shdr; 380441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *data; 381441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const char *name; 382441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word idx; /* Index in new file. */ 383441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word old_sh_link; /* Original value of shdr.sh_link. */ 384441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word symtab_idx; 385441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word version_idx; 386441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word group_idx; 387441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word group_cnt; 388441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Scn *newscn; 389441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct Ebl_Strent *se; 390441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *newsymidx; 391441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } *shdr_info = NULL; 392441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Scn *scn; 393441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t cnt; 394441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t idx; 395441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bool changes; 396441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr newehdr_mem; 397441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr *newehdr; 398441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr debugehdr_mem; 399441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Ehdr *debugehdr; 400441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct Ebl_Strtab *shst = NULL; 401441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project uint32_t debug_crc; 402441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bool any_symtab_changes = false; 403441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *shstrtab_data = NULL; 404441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 405441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the full name of the file. */ 406441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (prefix != NULL) 407441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 408441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cp = mempcpy (cp, prefix, prefix_len); 409441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *cp++ = ':'; 410441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 411441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memcpy (cp, fname, fname_len); 412441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 413441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If we are not replacing the input file open a new file here. */ 414441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (output_fname != NULL) 415441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 416441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fd = open (output_fname, O_RDWR | O_CREAT, mode); 417441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (fd == -1)) 418441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 419441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("cannot open `%s'"), output_fname); 420441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 421441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 422441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 423441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 424441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int debug_fd = -1; 425441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 426441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the EBL handling. The -g option is currently the only reason 427441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project we need EBL so dont open the backend unless necessary. */ 428441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Ebl *ebl = NULL; 429441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (remove_debug) 430441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 431441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ebl = ebl_openbackend (elf); 432441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ebl == NULL) 433441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 434441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("cannot open EBL backend")); 435441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 436441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail; 437441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 438441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 439441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 440441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Open the additional file the debug information will be stored in. */ 441441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debug_fname != NULL) 442441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 443441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create a temporary file name. We do not want to overwrite 444441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project the debug file if the file would not contain any 445441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project information. */ 446441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t debug_fname_len = strlen (debug_fname); 447441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project tmp_debug_fname = (char *) alloca (debug_fname_len + sizeof (".XXXXXX")); 448441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project strcpy (mempcpy (tmp_debug_fname, debug_fname, debug_fname_len), 449441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ".XXXXXX"); 450441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 451441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_fd = mkstemp (tmp_debug_fname); 452441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (debug_fd == -1)) 453441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 454441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("cannot open `%s'"), debug_fname); 455441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 456441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail; 457441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 458441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 459441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 460441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the information from the old file. */ 461441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr = gelf_getehdr (elf, &ehdr_mem); 462441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ehdr == NULL) 463441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 464441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 465441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the section header string table index. */ 466441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf_getshstrndx (elf, &shstrndx) < 0)) 467441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, 468441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("cannot get section header string table index")); 469441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 470441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We now create a new ELF descriptor for the same file. We 471441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project construct it almost exactly in the same way with some information 472441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project dropped. */ 473441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (output_fname != NULL) 474441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newelf = elf_begin (fd, ELF_C_WRITE_MMAP, NULL); 475441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 476441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newelf = elf_clone (elf, ELF_C_EMPTY); 477441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 478441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (gelf_newehdr (newelf, gelf_getclass (elf)) == 0) 479441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (ehdr->e_type != ET_REL 480441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && unlikely (gelf_newphdr (newelf, ehdr->e_phnum) == 0))) 481441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 482441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("cannot create new file `%s': %s"), 483441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project output_fname, elf_errmsg (-1)); 484441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail; 485441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 486441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 487441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Copy over the old program header if needed. */ 488441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ehdr->e_type != ET_REL) 489441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) 490441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 491441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Phdr phdr_mem; 492441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Phdr *phdr; 493441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 494441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project phdr = gelf_getphdr (elf, cnt, &phdr_mem); 495441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (phdr == NULL 496441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (gelf_update_phdr (newelf, cnt, phdr) == 0)) 497441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 498441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 499441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 500441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debug_fname != NULL) 501441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 502441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Also create an ELF descriptor for the debug file */ 503441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugelf = elf_begin (debug_fd, ELF_C_WRITE_MMAP, NULL); 504441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (gelf_newehdr (debugelf, gelf_getclass (elf)) == 0) 505441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (ehdr->e_type != ET_REL 506441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && unlikely (gelf_newphdr (debugelf, ehdr->e_phnum) == 0))) 507441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 508441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("cannot create new file `%s': %s"), 509441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_fname, elf_errmsg (-1)); 510441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 511441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 512441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 513441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Copy over the old program header if needed. */ 514441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ehdr->e_type != ET_REL) 515441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) 516441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 517441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Phdr phdr_mem; 518441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Phdr *phdr; 519441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 520441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project phdr = gelf_getphdr (elf, cnt, &phdr_mem); 521441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (phdr == NULL 522441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (gelf_update_phdr (debugelf, cnt, phdr) == 0)) 523441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 524441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 525441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 526441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 527441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Number of sections. */ 528441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf_getshnum (elf, &shnum) < 0)) 529441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 530441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("cannot determine number of sections: %s"), 531441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 532441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 533441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 534441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 535441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Storage for section information. We leave room for two more 536441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project entries since we unconditionally create a section header string 537441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project table. Maybe some weird tool created an ELF file without one. 538441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project The other one is used for the debug link section. */ 539441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((shnum + 2) * sizeof (struct shdr_info) > MAX_STACK_ALLOC) 540441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info = (struct shdr_info *) xcalloc (shnum + 2, 541441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sizeof (struct shdr_info)); 542441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 543441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 544441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info = (struct shdr_info *) alloca ((shnum + 2) 545441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project * sizeof (struct shdr_info)); 546441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memset (shdr_info, '\0', (shnum + 2) * sizeof (struct shdr_info)); 547441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 548441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 549441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Prepare section information data structure. */ 550441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = NULL; 551441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cnt = 1; 552441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while ((scn = elf_nextscn (elf, scn)) != NULL) 553441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 554441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This should always be true (i.e., there should not be any 555441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project holes in the numbering). */ 556441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (elf_ndxscn (scn) == cnt); 557441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 558441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].scn = scn; 559441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 560441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the header. */ 561441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_getshdr (scn, &shdr_info[cnt].shdr) == NULL) 562441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 563441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 564441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the name of the section. */ 565441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].name = elf_strptr (elf, shstrndx, 566441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_name); 567441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].name == NULL) 568441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 569441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("illformed file `%s'"), fname); 570441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 571441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 572441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 573441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Mark them as present but not yet investigated. */ 574441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = 1; 575441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 576441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Remember the shdr.sh_link value. */ 577441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].old_sh_link = shdr_info[cnt].shdr.sh_link; 578441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 579441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Sections in files other than relocatable object files which 580441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project are not loaded can be freely moved by us. In relocatable 581441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project object files everything can be moved. */ 582441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ehdr->e_type == ET_REL 583441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (shdr_info[cnt].shdr.sh_flags & SHF_ALLOC) == 0) 584441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_offset = 0; 585441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 586441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If this is an extended section index table store an 587441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project appropriate reference. */ 588441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (shdr_info[cnt].shdr.sh_type == SHT_SYMTAB_SHNDX)) 589441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 590441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[shdr_info[cnt].shdr.sh_link].symtab_idx == 0); 591441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_link].symtab_idx = cnt; 592441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 593441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (unlikely (shdr_info[cnt].shdr.sh_type == SHT_GROUP)) 594441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 595441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *grpref; 596441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t inner; 597441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 598441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Cross-reference the sections contained in the section 599441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project group. */ 600441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data = elf_getdata (shdr_info[cnt].scn, NULL); 601441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 602441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 603441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 604441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* XXX Fix for unaligned access. */ 605441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project grpref = (Elf32_Word *) shdr_info[cnt].data->d_buf; 606441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (inner = 1; 607441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < shdr_info[cnt].data->d_size / sizeof (Elf32_Word); 608441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++inner) 609441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[grpref[inner]].group_idx = cnt; 610441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 611441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (inner == 1 || (inner == 2 && (grpref[0] & GRP_COMDAT) == 0)) 612441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If the section group contains only one element and this 613441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project is n COMDAT section we can drop it right away. */ 614441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = 0; 615441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 616441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].group_cnt = inner - 1; 617441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 618441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (unlikely (shdr_info[cnt].shdr.sh_type == SHT_GNU_versym)) 619441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 620441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[shdr_info[cnt].shdr.sh_link].version_idx == 0); 621441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_link].version_idx = cnt; 622441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 623441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 624441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If this section is part of a group make sure it is not 625441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project discarded right away. */ 626441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((shdr_info[cnt].shdr.sh_flags & SHF_GROUP) != 0) 627441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 628441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].group_idx != 0); 629441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 630441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[shdr_info[cnt].group_idx].idx == 0) 631441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 632441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The section group section will be removed. */ 633441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].group_idx = 0; 634441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_flags &= ~SHF_GROUP; 635441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 636441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 637441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 638441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Increment the counter. */ 639441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++cnt; 640441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 641441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 642441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Now determine which sections can go away. The general rule is that 643441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project all sections which are not used at runtime are stripped out. But 644441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project there are a few exceptions: 645441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 646441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - special sections named ".comment" and ".note" are kept 647441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - OS or architecture specific sections are kept since we might not 648441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project know how to handle them 649441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - if a section is referred to from a section which is not removed 650441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project in the sh_link or sh_info element it cannot be removed either 651441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project */ 652441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt < shnum; ++cnt) 653441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Check whether the section can be removed. */ 654441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (SECTION_STRIP_P (ebl, elf, ehdr, &shdr_info[cnt].shdr, 655441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].name, remove_comment, remove_debug)) 656441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 657441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* For now assume this section will be removed. */ 658441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = 0; 659441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 660441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project idx = shdr_info[cnt].group_idx; 661441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (idx != 0) 662441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 663441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If the references section group is a normal section 664441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project group and has one element remaining, or if it is an 665441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project empty COMDAT section group it is removed. */ 666441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bool is_comdat; 667441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 668441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The section group data is already loaded. */ 669441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[idx].data != NULL); 670441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 671441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project is_comdat = (((Elf32_Word *) shdr_info[idx].data->d_buf)[0] 672441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project & GRP_COMDAT) != 0; 673441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 674441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project --shdr_info[idx].group_cnt; 675441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((!is_comdat && shdr_info[idx].group_cnt == 1) 676441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (is_comdat && shdr_info[idx].group_cnt == 0)) 677441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 678441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[idx].idx = 0; 679441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Continue recursively. */ 680441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project idx = shdr_info[idx].group_idx; 681441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 682441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 683441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 684441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 685441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 686441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 687441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Mark the SHT_NULL section as handled. */ 688441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[0].idx = 2; 689441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 690441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 691441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Handle exceptions: section groups and cross-references. We might 692441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project have to repeat this a few times since the resetting of the flag 693441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project might propagate. */ 694441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project do 695441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 696441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changes = false; 697441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 698441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt < shnum; ++cnt) 699441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 700441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].idx == 0) 701441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 702441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If a relocation section is marked as being removed make 703441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sure the section it is relocating is removed, too. */ 704441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((shdr_info[cnt].shdr.sh_type == SHT_REL 705441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || shdr_info[cnt].shdr.sh_type == SHT_RELA) 706441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && shdr_info[shdr_info[cnt].shdr.sh_info].idx != 0) 707441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = 1; 708441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 709441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 710441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].idx == 1) 711441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 712441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The content of symbol tables we don't remove must not 713441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project reference any section which we do remove. Otherwise 714441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project we cannot remove the section. */ 715441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_type == SHT_DYNSYM 716441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || shdr_info[cnt].shdr.sh_type == SHT_SYMTAB) 717441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 718441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *symdata; 719441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *xndxdata; 720441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t elsize; 721441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 722441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Make sure the data is loaded. */ 723441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 724441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 725441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data 726441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = elf_getdata (shdr_info[cnt].scn, NULL); 727441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 728441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 729441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 730441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project symdata = shdr_info[cnt].data; 731441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 732441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If there is an extended section index table load it 733441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project as well. */ 734441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].symtab_idx != 0 735441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && shdr_info[shdr_info[cnt].symtab_idx].data == NULL) 736441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 737441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].shdr.sh_type == SHT_SYMTAB); 738441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 739441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].symtab_idx].data 740441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = elf_getdata (shdr_info[shdr_info[cnt].symtab_idx].scn, 741441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 742441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[shdr_info[cnt].symtab_idx].data == NULL) 743441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 744441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 745441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project xndxdata = shdr_info[shdr_info[cnt].symtab_idx].data; 746441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 747441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Go through all symbols and make sure the section they 748441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project reference is not removed. */ 749441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elsize = gelf_fsize (elf, ELF_T_SYM, 1, ehdr->e_version); 750441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 751441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t inner = 0; 752441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < shdr_info[cnt].data->d_size / elsize; 753441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++inner) 754441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 755441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym sym_mem; 756441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word xndx; 757441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym *sym; 758441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t scnidx; 759441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 760441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sym = gelf_getsymshndx (symdata, xndxdata, inner, 761441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project &sym_mem, &xndx); 762441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sym == NULL) 763441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 764441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 765441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scnidx = sym->st_shndx; 766441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (scnidx == SHN_UNDEF || scnidx >= shnum 767441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (scnidx >= SHN_LORESERVE 768441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && scnidx <= SHN_HIRESERVE 769441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && scnidx != SHN_XINDEX) 770441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Don't count in the section symbols. */ 771441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || GELF_ST_TYPE (sym->st_info) == STT_SECTION) 772441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This is no section index, leave it alone. */ 773441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 774441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (scnidx == SHN_XINDEX) 775441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scnidx = xndx; 776441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 777441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[scnidx].idx == 0) 778441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 779441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Mark this section as used. */ 780441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[scnidx].idx = 1; 781441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changes |= scnidx < cnt; 782441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 783441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 784441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 785441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 786441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Cross referencing happens: 787441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - for the cases the ELF specification says. That are 788441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_DYNAMIC in sh_link to string table 789441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_HASH in sh_link to symbol table 790441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_REL and SHT_RELA in sh_link to symbol table 791441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_SYMTAB and SHT_DYNSYM in sh_link to string table 792441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_GROUP in sh_link to symbol table 793441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + SHT_SYMTAB_SHNDX in sh_link to symbol table 794441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Other (OS or architecture-specific) sections might as 795441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project well use this field so we process it unconditionally. 796441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - references inside section groups 797441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project - specially marked references in sh_info if the SHF_INFO_LINK 798441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project flag is set 799441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project */ 800441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 801441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[shdr_info[cnt].shdr.sh_link].idx == 0) 802441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 803441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_link].idx = 1; 804441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changes |= shdr_info[cnt].shdr.sh_link < cnt; 805441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 806441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 807441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Handle references through sh_info. */ 808441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (SH_INFO_LINK_P (&shdr_info[cnt].shdr) 809441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && shdr_info[shdr_info[cnt].shdr.sh_info].idx == 0) 810441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 811441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_info].idx = 1; 812441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changes |= shdr_info[cnt].shdr.sh_info < cnt; 813441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 814441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 815441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Mark the section as investigated. */ 816441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = 2; 817441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 818441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 819441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 820441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (changes); 821441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 822441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Write out a copy of all the sections to the debug output file. 823441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project The ones that are not removed in the stripped file are SHT_NOBITS */ 824441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debug_fname != NULL) 825441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 826441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt < shnum; ++cnt) 827441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 828441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *debugdata; 829441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr debugshdr; 830441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int discard_section; 831441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 832441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = elf_newscn (debugelf); 833441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (scn == NULL) 834441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, 835441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("while generating output file: %s"), 836441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 837441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 838441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project discard_section = shdr_info[cnt].idx > 0 && cnt != ehdr->e_shstrndx; 839441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 840441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set the section header in the new file. */ 841441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugshdr = shdr_info[cnt].shdr; 842441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (discard_section) 843441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugshdr.sh_type = SHT_NOBITS; 844441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 845441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (gelf_update_shdr (scn, &debugshdr)) == 0) 846441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* There cannot be any overflows. */ 847441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 848441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 849441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the data from the old file if necessary. */ 850441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 851441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 852441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data = elf_getdata (shdr_info[cnt].scn, NULL); 853441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 854441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 855441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 856441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 857441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set the data. This is done by copying from the old file. */ 858441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugdata = elf_newdata (scn); 859441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debugdata == NULL) 860441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 861441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 862441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Copy the structure. */ 863441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *debugdata = *shdr_info[cnt].data; 864441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (discard_section) 865441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugdata->d_buf = NULL; 866441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 867441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 868441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Finish the ELF header. Fill in the fields not handled by 869441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project libelf from the old file. */ 870441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr = gelf_getehdr (debugelf, &debugehdr_mem); 871441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debugehdr == NULL) 872441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 873441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 874441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memcpy (debugehdr->e_ident, ehdr->e_ident, EI_NIDENT); 875441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_type = ehdr->e_type; 876441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_machine = ehdr->e_machine; 877441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_version = ehdr->e_version; 878441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_entry = ehdr->e_entry; 879441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_flags = ehdr->e_flags; 880441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debugehdr->e_shstrndx = ehdr->e_shstrndx; 881441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 882441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (gelf_update_ehdr (debugelf, debugehdr)) == 0) 883441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 884441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("%s: error while creating ELF header: %s"), 885441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_fname, elf_errmsg (-1)); 886441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 887441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 888441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 889441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 890441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Finally write the file. */ 891441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf_update (debugelf, ELF_C_WRITE)) == -1) 892441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 893441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("while writing `%s': %s"), 894441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_fname, elf_errmsg (-1)); 895441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 896441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 897441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 898441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 899441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the real output file. First rename, then change the 900441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project mode. */ 901441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (rename (tmp_debug_fname, debug_fname) != 0 902441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || fchmod (debug_fd, mode) != 0) 903441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 904441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("while creating '%s'"), debug_fname); 905441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 906441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 907441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 908441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 909441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The temporary file does not exist anymore. */ 910441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project tmp_debug_fname = NULL; 911441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 912441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Compute the checksum which we will add to the executable. */ 913441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (crc32_file (debug_fd, &debug_crc) != 0) 914441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 915441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, 916441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("while computing checksum for debug information")); 917441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project unlink (debug_fname); 918441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 919441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 920441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 921441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 922441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 923441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 924441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Mark the section header string table as unused, we will create 925441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project a new one. */ 926441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shstrndx].idx = 0; 927441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 928441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We need a string table for the section headers. */ 929441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shst = ebl_strtabinit (true); 930441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shst == NULL) 931441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, errno, gettext ("while preparing output for `%s'"), 932441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project output_fname ?: fname); 933441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 934441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Assign new section numbers. */ 935441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[0].idx = 0; 936441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = idx = 1; cnt < shnum; ++cnt) 937441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].idx > 0) 938441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 939441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = idx++; 940441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 941441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create a new section. */ 942441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newscn = elf_newscn (newelf); 943441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].newscn == NULL) 944441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, gettext ("while generating output file: %s"), 945441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 946441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 947441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (elf_ndxscn (shdr_info[cnt].newscn) == shdr_info[cnt].idx); 948441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 949441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Add this name to the section header string table. */ 950441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].se = ebl_strtabadd (shst, shdr_info[cnt].name, 0); 951441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 952441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 953441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Test whether we are doing anything at all. */ 954441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (cnt == idx) 955441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Nope, all removable sections are already gone. */ 956441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto fail_close; 957441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 958441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the reference to the file with the debug info. */ 959441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debug_fname != NULL) 960441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 961441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *debug_basename; 962441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project off_t crc_offset; 963441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 964441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Add the section header string table section name. */ 965441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].se = ebl_strtabadd (shst, ".gnu_debuglink", 15); 966441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = idx++; 967441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 968441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the section header. */ 969441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_type = SHT_PROGBITS; 970441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_flags = 0; 971441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_addr = 0; 972441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_link = SHN_UNDEF; 973441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_info = SHN_UNDEF; 974441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_entsize = 0; 975441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_addralign = 4; 976441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We set the offset to zero here. Before we write the ELF file the 977441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project field must have the correct value. This is done in the final 978441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project loop over all section. Then we have all the information needed. */ 979441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_offset = 0; 980441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 981441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the section. */ 982441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newscn = elf_newscn (newelf); 983441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].newscn == NULL) 984441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, 985441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("while create section header section: %s"), 986441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 987441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (elf_ndxscn (shdr_info[cnt].newscn) == shdr_info[cnt].idx); 988441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 989441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data = elf_newdata (shdr_info[cnt].newscn); 990441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 991441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, gettext ("cannot allocate section data: %s"), 992441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 993441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 994441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_basename = basename (debug_fname); 995441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project crc_offset = strlen (debug_basename) + 1; 996441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Align to 4 byte boundary */ 997441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project crc_offset = ((crc_offset - 1) & ~3) + 4; 998441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 999441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data->d_align = 4; 1000441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_size = shdr_info[cnt].data->d_size 1001441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = crc_offset + 4; 1002441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data->d_buf = xcalloc (1, shdr_info[cnt].data->d_size); 1003441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1004441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project strcpy (shdr_info[cnt].data->d_buf, debug_basename); 1005441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Store the crc value in the correct byteorder */ 1006441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((__BYTE_ORDER == __LITTLE_ENDIAN 1007441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && ehdr->e_ident[EI_DATA] == ELFDATA2MSB) 1008441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (__BYTE_ORDER == __BIG_ENDIAN 1009441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && ehdr->e_ident[EI_DATA] == ELFDATA2LSB)) 1010441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project debug_crc = bswap_32 (debug_crc); 1011441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memcpy ((char *)shdr_info[cnt].data->d_buf + crc_offset, 1012441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (char *) &debug_crc, 4); 1013441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1014441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* One more section done. */ 1015441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++cnt; 1016441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1017441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1018441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Index of the section header table in the shdr_info array. */ 1019441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t shdridx = cnt; 1020441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1021441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Add the section header string table section name. */ 1022441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].se = ebl_strtabadd (shst, ".shstrtab", 10); 1023441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx = idx; 1024441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1025441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the section header. */ 1026441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_type = SHT_STRTAB; 1027441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_flags = 0; 1028441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_addr = 0; 1029441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_link = SHN_UNDEF; 1030441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_info = SHN_UNDEF; 1031441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_entsize = 0; 1032441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We set the offset to zero here. Before we write the ELF file the 1033441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project field must have the correct value. This is done in the final 1034441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project loop over all section. Then we have all the information needed. */ 1035441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_offset = 0; 1036441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_addralign = 1; 1037441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1038441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the section. */ 1039441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newscn = elf_newscn (newelf); 1040441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].newscn == NULL) 1041441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, 1042441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("while create section header section: %s"), 1043441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 1044441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (elf_ndxscn (shdr_info[cnt].newscn) == idx); 1045441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1046441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Finalize the string table and fill in the correct indices in the 1047441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project section headers. */ 1048441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shstrtab_data = elf_newdata (shdr_info[cnt].newscn); 1049441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shstrtab_data == NULL) 1050441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, 0, 1051441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gettext ("while create section header string table: %s"), 1052441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 1053441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ebl_strtabfinalize (shst, shstrtab_data); 1054441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1055441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We have to set the section size. */ 1056441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_size = shstrtab_data->d_size; 1057441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1058441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Update the section information. */ 1059441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Off lastoffset = 0; 1060441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt <= shdridx; ++cnt) 1061441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].idx > 0) 1062441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1063441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *newdata; 1064441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1065441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = elf_getscn (newelf, shdr_info[cnt].idx); 1066441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (scn != NULL); 1067441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1068441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Update the name. */ 1069441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_name = ebl_strtaboffset (shdr_info[cnt].se); 1070441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1071441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Update the section header from the input file. Some fields 1072441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project might be section indeces which now have to be adjusted. */ 1073441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_link != 0) 1074441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_link = 1075441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_link].idx; 1076441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1077441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_type == SHT_GROUP) 1078441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1079441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].data != NULL); 1080441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1081441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *grpref = (Elf32_Word *) shdr_info[cnt].data->d_buf; 1082441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t inner = 0; 1083441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < shdr_info[cnt].data->d_size / sizeof (Elf32_Word); 1084441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++inner) 1085441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project grpref[inner] = shdr_info[grpref[inner]].idx; 1086441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1087441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1088441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Handle the SHT_REL, SHT_RELA, and SHF_INFO_LINK flag. */ 1089441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (SH_INFO_LINK_P (&shdr_info[cnt].shdr)) 1090441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_info = 1091441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[shdr_info[cnt].shdr.sh_info].idx; 1092441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1093441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the data from the old file if necessary. We already 1094441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project created the data for the section header string table. */ 1095441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (cnt < shnum) 1096441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1097441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 1098441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1099441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].data = elf_getdata (shdr_info[cnt].scn, NULL); 1100441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].data == NULL) 1101441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1102441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1103441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1104441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set the data. This is done by copying from the old file. */ 1105441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newdata = elf_newdata (scn); 1106441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (newdata == NULL) 1107441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1108441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1109441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Copy the structure. */ 1110441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *newdata = *shdr_info[cnt].data; 1111441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1112441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We know the size. */ 1113441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_size = shdr_info[cnt].data->d_size; 1114441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1115441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We have to adjust symtol tables. The st_shndx member might 1116441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project have to be updated. */ 1117441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_type == SHT_DYNSYM 1118441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || shdr_info[cnt].shdr.sh_type == SHT_SYMTAB) 1119441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1120441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *versiondata = NULL; 1121441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *shndxdata = NULL; 1122441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1123441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t elsize = gelf_fsize (elf, ELF_T_SYM, 1, 1124441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version); 1125441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1126441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].symtab_idx != 0) 1127441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1128441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].shdr.sh_type == SHT_SYMTAB_SHNDX); 1129441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This section has extended section information. 1130441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project We have to modify that information, too. */ 1131441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shndxdata = elf_getdata (shdr_info[shdr_info[cnt].symtab_idx].scn, 1132441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 1133441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1134441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert ((versiondata->d_size / sizeof (Elf32_Word)) 1135441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project >= shdr_info[cnt].data->d_size / elsize); 1136441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1137441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1138441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].version_idx != 0) 1139441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1140441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].shdr.sh_type == SHT_DYNSYM); 1141441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This section has associated version 1142441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project information. We have to modify that 1143441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project information, too. */ 1144441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project versiondata = elf_getdata (shdr_info[shdr_info[cnt].version_idx].scn, 1145441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 1146441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1147441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert ((versiondata->d_size / sizeof (GElf_Versym)) 1148441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project >= shdr_info[cnt].data->d_size / elsize); 1149441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1150441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1151441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newsymidx 1152441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = (Elf32_Word *) xcalloc (shdr_info[cnt].data->d_size 1153441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project / elsize, sizeof (Elf32_Word)); 1154441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1155441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bool last_was_local = true; 1156441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t destidx; 1157441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t inner; 1158441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (destidx = inner = 1; 1159441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < shdr_info[cnt].data->d_size / elsize; 1160441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++inner) 1161441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1162441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word sec; 1163441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym sym_mem; 1164441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word xshndx; 1165441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym *sym = gelf_getsymshndx (shdr_info[cnt].data, 1166441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shndxdata, inner, 1167441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project &sym_mem, &xshndx); 1168441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sym == NULL) 1169441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1170441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1171441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sym->st_shndx == SHN_UNDEF 1172441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (sym->st_shndx >= shnum 1173441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && sym->st_shndx != SHN_XINDEX)) 1174441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1175441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This is no section index, leave it alone 1176441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project unless it is moved. */ 1177441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (destidx != inner 1178441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && gelf_update_symshndx (shdr_info[cnt].data, 1179441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shndxdata, 1180441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project destidx, sym, 1181441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project xshndx) == 0) 1182441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1183441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1184441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newsymidx[inner] = destidx++; 1185441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1186441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (last_was_local 1187441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && GELF_ST_BIND (sym->st_info) != STB_LOCAL) 1188441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1189441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project last_was_local = false; 1190441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_info = destidx - 1; 1191441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1192441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1193441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 1194441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1195441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1196441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the full section index, if necessary from the 1197441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project XINDEX table. */ 1198441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sym->st_shndx != SHN_XINDEX) 1199441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sec = shdr_info[sym->st_shndx].idx; 1200441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1201441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1202441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shndxdata != NULL); 1203441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1204441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sec = shdr_info[xshndx].idx; 1205441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1206441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1207441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sec != 0) 1208441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1209441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Section nshndx; 1210441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word nxshndx; 1211441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1212441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (sec < SHN_LORESERVE) 1213441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1214441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project nshndx = sec; 1215441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project nxshndx = 0; 1216441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1217441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1218441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1219441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project nshndx = SHN_XINDEX; 1220441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project nxshndx = sec; 1221441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1222441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1223441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (sec < SHN_LORESERVE || shndxdata != NULL); 1224441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1225441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((inner != destidx || nshndx != sym->st_shndx 1226441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || (shndxdata != NULL && nxshndx != xshndx)) 1227441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && (sym->st_shndx = nshndx, 1228441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project gelf_update_symshndx (shdr_info[cnt].data, 1229441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shndxdata, 1230441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project destidx, sym, 1231441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project nxshndx) == 0)) 1232441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1233441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1234441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newsymidx[inner] = destidx++; 1235441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1236441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (last_was_local 1237441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project && GELF_ST_BIND (sym->st_info) != STB_LOCAL) 1238441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1239441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project last_was_local = false; 1240441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_info = destidx - 1; 1241441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1242441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1243441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1244441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* This is a section symbol for a section which has 1245441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project been removed. */ 1246441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (GELF_ST_TYPE (sym->st_info) == STT_SECTION); 1247441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1248441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1249441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (destidx != inner) 1250441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1251441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The size of the symbol table changed. */ 1252441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_size = newdata->d_size 1253441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = destidx * elsize; 1254441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project any_symtab_changes = true; 1255441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1256441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1257441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1258441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol table didn't really change. */ 1259441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project free (shdr_info[cnt].newsymidx); 1260441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].newsymidx = NULL; 1261441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1262441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1263441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1264441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1265441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If we have to, compute the offset of the section. */ 1266441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_offset == 0) 1267441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].shdr.sh_offset 1268441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = ((lastoffset + shdr_info[cnt].shdr.sh_addralign - 1) 1269441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project & ~((GElf_Off) (shdr_info[cnt].shdr.sh_addralign - 1))); 1270441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1271441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set the section header in the new file. */ 1272441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (gelf_update_shdr (scn, &shdr_info[cnt].shdr) == 0)) 1273441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* There cannot be any overflows. */ 1274441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1275441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1276441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Remember the last section written so far. */ 1277441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Off filesz = (shdr_info[cnt].shdr.sh_type != SHT_NOBITS 1278441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? shdr_info[cnt].shdr.sh_size : 0); 1279441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (lastoffset < shdr_info[cnt].shdr.sh_offset + filesz) 1280441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project lastoffset = shdr_info[cnt].shdr.sh_offset + filesz; 1281441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1282441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1283441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Adjust symbol references if symbol tables changed. */ 1284441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (any_symtab_changes) 1285441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1286441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Find all relocation sections which use this 1287441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project symbol table. */ 1288441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt <= shdridx; ++cnt) 1289441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1290441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].idx == 0) 1291441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Ignore sections which are discarded. */ 1292441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 1293441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1294441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_type == SHT_REL 1295441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || shdr_info[cnt].shdr.sh_type == SHT_RELA) 1296441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1297441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If the symbol table hasn't changed, do not do anything. */ 1298441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[shdr_info[cnt].old_sh_link].newsymidx == NULL) 1299441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 1300441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1301441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *newsymidx 1302441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = shdr_info[shdr_info[cnt].old_sh_link].newsymidx; 1303441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *d = elf_getdata (elf_getscn (newelf, 1304441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[cnt].idx), 1305441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 1306441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (d != NULL); 1307441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t nrels = (shdr_info[cnt].shdr.sh_size 1308441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project / shdr_info[cnt].shdr.sh_entsize); 1309441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1310441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_type == SHT_REL) 1311441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t relidx = 0; relidx < nrels; ++relidx) 1312441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1313441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Rel rel_mem; 1314441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_getrel (d, relidx, &rel_mem) == NULL) 1315441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1316441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1317441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t symidx = GELF_R_SYM (rel_mem.r_info); 1318441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (newsymidx[symidx] != symidx) 1319441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1320441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rel_mem.r_info 1321441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = GELF_R_INFO (newsymidx[symidx], 1322441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GELF_R_TYPE (rel_mem.r_info)); 1323441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1324441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_update_rel (d, relidx, &rel_mem) == 0) 1325441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1326441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1327441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1328441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1329441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t relidx = 0; relidx < nrels; ++relidx) 1330441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1331441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Rela rel_mem; 1332441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_getrela (d, relidx, &rel_mem) == NULL) 1333441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1334441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1335441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t symidx = GELF_R_SYM (rel_mem.r_info); 1336441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (newsymidx[symidx] != symidx) 1337441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1338441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rel_mem.r_info 1339441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = GELF_R_INFO (newsymidx[symidx], 1340441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GELF_R_TYPE (rel_mem.r_info)); 1341441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1342441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_update_rela (d, relidx, &rel_mem) == 0) 1343441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1344441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1345441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1346441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1347441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (shdr_info[cnt].shdr.sh_type == SHT_HASH) 1348441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1349441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We have to recompute the hash table. */ 1350441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word symtabidx = shdr_info[cnt].old_sh_link; 1351441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1352441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We do not have to do anything if the symbol table was 1353441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project not changed. */ 1354441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[symtabidx].newsymidx == NULL) 1355441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 1356441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1357441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol version section in the new file. */ 1358441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = elf_getscn (newelf, shdr_info[cnt].idx); 1359441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1360441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol table data. */ 1361441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *symd = elf_getdata (elf_getscn (newelf, 1362441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[symtabidx].idx), 1363441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 1364441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (symd != NULL); 1365441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1366441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The hash table data. */ 1367441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *hashd = elf_getdata (scn, NULL); 1368441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (hashd != NULL); 1369441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1370441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[cnt].shdr.sh_entsize == sizeof (Elf32_Word)) 1371441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1372441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Sane arches first. */ 1373441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *bucket = (Elf32_Word *) hashd->d_buf; 1374441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1375441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t strshndx = shdr_info[symtabidx].old_sh_link; 1376441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t elsize = gelf_fsize (elf, ELF_T_SYM, 1, 1377441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version); 1378441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1379441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Convert to the correct byte order. */ 1380441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_xlatetom (newelf, hashd, hashd, 1381441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project BYTE_ORDER == LITTLE_ENDIAN 1382441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? ELFDATA2LSB : ELFDATA2MSB) == NULL) 1383441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1384441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1385441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Adjust the nchain value. The symbol table size 1386441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changed. We keep the same size for the bucket array. */ 1387441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket[1] = symd->d_size / elsize; 1388441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word nbucket = bucket[0]; 1389441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket += 2; 1390441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *chain = bucket + nbucket; 1391441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1392441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* New size of the section. */ 1393441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr shdr_mem; 1394441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); 1395441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr->sh_size = hashd->d_size 1396441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = (2 + symd->d_size / elsize + nbucket) 1397441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project * sizeof (Elf32_Word); 1398441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) gelf_update_shdr (scn, shdr); 1399441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1400441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Clear the arrays. */ 1401441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memset (bucket, '\0', 1402441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (symd->d_size / elsize + nbucket) 1403441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project * sizeof (Elf32_Word)); 1404441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1405441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t inner = shdr_info[symtabidx].shdr.sh_info; 1406441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < symd->d_size / elsize; ++inner) 1407441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1408441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym sym_mem; 1409441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym *sym = gelf_getsym (symd, inner, &sym_mem); 1410441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (sym != NULL); 1411441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1412441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const char *name = elf_strptr (elf, strshndx, 1413441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sym->st_name); 1414441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (name != NULL); 1415441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t hidx = elf_hash (name) % nbucket; 1416441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1417441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (bucket[hidx] == 0) 1418441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket[hidx] = inner; 1419441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1420441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1421441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project hidx = bucket[hidx]; 1422441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1423441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (chain[hidx] != 0) 1424441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project hidx = chain[hidx]; 1425441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1426441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project chain[hidx] = inner; 1427441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1428441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1429441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1430441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1431441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1432441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Alpha and S390 64-bit use 64-bit SHT_HASH entries. */ 1433441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr_info[cnt].shdr.sh_entsize 1434441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project == sizeof (Elf64_Xword)); 1435441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1436441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf64_Xword *bucket = (Elf64_Xword *) hashd->d_buf; 1437441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1438441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t strshndx = shdr_info[symtabidx].old_sh_link; 1439441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t elsize = gelf_fsize (elf, ELF_T_SYM, 1, 1440441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version); 1441441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1442441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Convert to the correct byte order. */ 1443441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_xlatetom (newelf, hashd, hashd, 1444441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project BYTE_ORDER == LITTLE_ENDIAN 1445441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? ELFDATA2LSB : ELFDATA2MSB) == NULL) 1446441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1447441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1448441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Adjust the nchain value. The symbol table size 1449441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project changed. We keep the same size for the bucket array. */ 1450441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket[1] = symd->d_size / elsize; 1451441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf64_Xword nbucket = bucket[0]; 1452441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket += 2; 1453441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf64_Xword *chain = bucket + nbucket; 1454441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1455441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* New size of the section. */ 1456441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr shdr_mem; 1457441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); 1458441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr->sh_size = hashd->d_size 1459441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = (2 + symd->d_size / elsize + nbucket) 1460441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project * sizeof (Elf64_Xword); 1461441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) gelf_update_shdr (scn, shdr); 1462441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1463441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Clear the arrays. */ 1464441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memset (bucket, '\0', 1465441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (symd->d_size / elsize + nbucket) 1466441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project * sizeof (Elf64_Xword)); 1467441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1468441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t inner = shdr_info[symtabidx].shdr.sh_info; 1469441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project inner < symd->d_size / elsize; ++inner) 1470441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1471441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym sym_mem; 1472441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Sym *sym = gelf_getsym (symd, inner, &sym_mem); 1473441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (sym != NULL); 1474441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1475441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const char *name = elf_strptr (elf, strshndx, 1476441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project sym->st_name); 1477441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (name != NULL); 1478441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t hidx = elf_hash (name) % nbucket; 1479441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1480441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (bucket[hidx] == 0) 1481441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project bucket[hidx] = inner; 1482441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1483441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1484441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project hidx = bucket[hidx]; 1485441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1486441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (chain[hidx] != 0) 1487441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project hidx = chain[hidx]; 1488441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1489441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project chain[hidx] = inner; 1490441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1491441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1492441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1493441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1494441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Convert back to the file byte order. */ 1495441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_xlatetof (newelf, hashd, hashd, 1496441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project BYTE_ORDER == LITTLE_ENDIAN 1497441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? ELFDATA2LSB : ELFDATA2MSB) == NULL) 1498441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1499441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1500441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (shdr_info[cnt].shdr.sh_type == SHT_GNU_versym) 1501441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1502441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If the symbol table changed we have to adjust the 1503441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project entries. */ 1504441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word symtabidx = shdr_info[cnt].old_sh_link; 1505441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1506441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We do not have to do anything if the symbol table was 1507441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project not changed. */ 1508441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[symtabidx].newsymidx == NULL) 1509441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project continue; 1510441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1511441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol version section in the new file. */ 1512441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = elf_getscn (newelf, shdr_info[cnt].idx); 1513441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1514441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol table data. */ 1515441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *symd = elf_getdata (elf_getscn (newelf, 1516441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[symtabidx].idx), 1517441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project NULL); 1518441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (symd != NULL); 1519441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1520441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The version symbol data. */ 1521441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Data *verd = elf_getdata (scn, NULL); 1522441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (verd != NULL); 1523441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1524441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Convert to the correct byte order. */ 1525441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_xlatetom (newelf, verd, verd, 1526441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project BYTE_ORDER == LITTLE_ENDIAN 1527441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? ELFDATA2LSB : ELFDATA2MSB) == NULL) 1528441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1529441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1530441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol version array. */ 1531441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Half *verstab = (GElf_Half *) verd->d_buf; 1532441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1533441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* New indices of the symbols. */ 1534441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Word *newsymidx = shdr_info[symtabidx].newsymidx; 1535441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1536441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Walk through the list and */ 1537441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t elsize = gelf_fsize (elf, verd->d_type, 1, 1538441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version); 1539441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (size_t inner = 1; inner < verd->d_size / elsize; ++inner) 1540441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (newsymidx[inner] != 0) 1541441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Overwriting the same array works since the 1542441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project reordering can only move entries to lower indices 1543441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project in the array. */ 1544441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project verstab[newsymidx[inner]] = verstab[inner]; 1545441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1546441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* New size of the section. */ 1547441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr shdr_mem; 1548441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); 1549441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr->sh_size = verd->d_size 1550441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project = gelf_fsize (newelf, verd->d_type, 1551441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project symd->d_size / gelf_fsize (elf, symd->d_type, 1, 1552441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version), 1553441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ehdr->e_version); 1554441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) gelf_update_shdr (scn, shdr); 1555441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1556441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Convert back to the file byte order. */ 1557441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_xlatetof (newelf, verd, verd, 1558441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project BYTE_ORDER == LITTLE_ENDIAN 1559441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ? ELFDATA2LSB : ELFDATA2MSB) == NULL) 1560441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1561441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1562441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (shdr_info[cnt].shdr.sh_type == SHT_GROUP) 1563441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1564441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Check whether the associated symbol table changed. */ 1565441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info[shdr_info[cnt].old_sh_link].newsymidx != NULL) 1566441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1567441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Yes the symbol table changed. Update the section 1568441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project header of the section group. */ 1569441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project scn = elf_getscn (newelf, shdr_info[cnt].idx); 1570441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr shdr_mem; 1571441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); 1572441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project assert (shdr != NULL); 1573441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1574441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t stabidx = shdr_info[cnt].old_sh_link; 1575441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr->sh_info = shdr_info[stabidx].newsymidx[shdr->sh_info]; 1576441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1577441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) gelf_update_shdr (scn, shdr); 1578441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1579441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1580441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1581441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1582441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1583441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Finally finish the ELF header. Fill in the fields not handled by 1584441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project libelf from the old file. */ 1585441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr = gelf_getehdr (newelf, &newehdr_mem); 1586441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (newehdr == NULL) 1587441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1588441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1589441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memcpy (newehdr->e_ident, ehdr->e_ident, EI_NIDENT); 1590441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_type = ehdr->e_type; 1591441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_machine = ehdr->e_machine; 1592441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_version = ehdr->e_version; 1593441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_entry = ehdr->e_entry; 1594441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_flags = ehdr->e_flags; 1595441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_phoff = ehdr->e_phoff; 1596441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We need to position the section header table. */ 1597441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const size_t offsize = gelf_fsize (elf, ELF_T_OFF, 1, EV_CURRENT); 1598441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_shoff = ((shdr_info[shdridx].shdr.sh_offset 1599441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project + shdr_info[shdridx].shdr.sh_size + offsize - 1) 1600441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project & ~((GElf_Off) (offsize - 1))); 1601441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_shentsize = gelf_fsize (elf, ELF_T_SHDR, 1, EV_CURRENT); 1602441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1603441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The new section header string table index. */ 1604441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (likely (idx < SHN_HIRESERVE) && likely (idx != SHN_XINDEX)) 1605441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_shstrndx = idx; 1606441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 1607441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1608441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The index does not fit in the ELF header field. */ 1609441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[0].scn = elf_getscn (elf, 0); 1610441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1611441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_getshdr (shdr_info[0].scn, &shdr_info[0].shdr) == NULL) 1612441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1613441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1614441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr_info[0].shdr.sh_link = idx; 1615441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) gelf_update_shdr (shdr_info[0].scn, &shdr_info[0].shdr); 1616441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1617441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project newehdr->e_shstrndx = SHN_XINDEX; 1618441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1619441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1620441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (gelf_update_ehdr (newelf, newehdr) == 0) 1621441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1622441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("%s: error while creating ELF header: %s"), 1623441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fname, elf_errmsg (-1)); 1624441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 1625441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1626441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1627441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We have everything from the old file. */ 1628441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_cntl (elf, ELF_C_FDDONE) != 0) 1629441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1630441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("%s: error while reading the file: %s"), 1631441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fname, elf_errmsg (-1)); 1632441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 1; 1633441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1634441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1635441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The ELF library better follows our layout when this is not a 1636441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project relocatable object file. */ 1637441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_flagelf (newelf, ELF_C_SET, 1638441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (ehdr->e_type != ET_REL ? ELF_F_LAYOUT : 0) 1639441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project | (permissive ? ELF_F_PERMISSIVE : 0)); 1640441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1641441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Finally write the file. */ 1642441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_update (newelf, ELF_C_WRITE) == -1) 1643441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1644441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("while writing `%s': %s"), 1645441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fname, elf_errmsg (-1)); 1646441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 1647441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1648441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1649441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fail_close: 1650441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr_info != NULL) 1651441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1652441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* For some sections we might have created an table to map symbol 1653441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project table indices. */ 1654441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (any_symtab_changes) 1655441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project for (cnt = 1; cnt <= shdridx; ++cnt) 1656441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project free (shdr_info[cnt].newsymidx); 1657441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1658441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Free the memory. */ 1659441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if ((shnum + 2) * sizeof (struct shdr_info) > MAX_STACK_ALLOC) 1660441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project free (shdr_info); 1661441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1662441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1663441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Free other resources. */ 1664441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shstrtab_data != NULL) 1665441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project free (shstrtab_data->d_buf); 1666441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shst != NULL) 1667441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ebl_strtabfree (shst); 1668441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1669441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* That was it. Close the descriptors. */ 1670441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_end (newelf) != 0) 1671441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1672441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("error while finishing `%s': %s"), fname, 1673441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 1674441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 1675441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1676441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1677441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debugelf != NULL && elf_end (debugelf) != 0) 1678441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1679441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, 0, gettext ("error while finishing `%s': %s"), debug_fname, 1680441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 1681441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 1682441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1683441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1684441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fail: 1685441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Close the EBL backend. */ 1686441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ebl != NULL) 1687441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ebl_closebackend (ebl); 1688441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1689441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Close debug file descriptor, if opened */ 1690441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (debug_fd >= 0) 1691441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1692441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (tmp_debug_fname != NULL) 1693441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project unlink (tmp_debug_fname); 1694441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (debug_fd); 1695441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1696441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1697441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If requested, preserve the timestamp. */ 1698441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (tvp != NULL) 1699441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1700441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (futimes (fd, tvp) != 0) 1701441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1702441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("\ 1703441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectcannot set access and modification date of \"%s\""), 1704441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project output_fname ?: fname); 1705441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 1706441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1707441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1708441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1709441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Close the file descriptor if we created a new file. */ 1710441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (output_fname != NULL) 1711441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (fd); 1712441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1713441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 1714441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 1715441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1716441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1717441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic int 1718441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projecthandle_ar (int fd, Elf *elf, const char *prefix, const char *fname, 1719441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project struct timeval tvp[2]) 1720441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 1721441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t prefix_len = prefix == NULL ? 0 : strlen (prefix); 1722441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t fname_len = strlen (fname) + 1; 1723441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char new_prefix[prefix_len + 1 + fname_len]; 1724441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char *cp = new_prefix; 1725441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1726441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create the full name of the file. */ 1727441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (prefix != NULL) 1728441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1729441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cp = mempcpy (cp, prefix, prefix_len); 1730441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project *cp++ = ':'; 1731441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1732441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project memcpy (cp, fname, fname_len); 1733441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1734441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1735441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Process all the files contained in the archive. */ 1736441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *subelf; 1737441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Cmd cmd = ELF_C_RDWR; 1738441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result = 0; 1739441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while ((subelf = elf_begin (fd, cmd, elf)) != NULL) 1740441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1741441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The the header for this element. */ 1742441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Arhdr *arhdr = elf_getarhdr (subelf); 1743441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1744441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_kind (subelf) == ELF_K_ELF) 1745441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result |= handle_elf (fd, subelf, new_prefix, arhdr->ar_name, 0, NULL); 1746441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (elf_kind (subelf) == ELF_K_AR) 1747441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result |= handle_ar (fd, subelf, new_prefix, arhdr->ar_name, NULL); 1748441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1749441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get next archive element. */ 1750441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cmd = elf_next (subelf); 1751441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (elf_end (subelf) != 0)) 1752441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project INTERNAL_ERROR (fname); 1753441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1754441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1755441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (tvp != NULL) 1756441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1757441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (futimes (fd, tvp) != 0)) 1758441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 1759441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (0, errno, gettext ("\ 1760441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectcannot set access and modification date of \"%s\""), fname); 1761441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 1762441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1763441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 1764441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1765441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (close (fd) != 0)) 1766441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project error (EXIT_FAILURE, errno, gettext ("while closing `%s'"), fname); 1767441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 1768441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 1769441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 1770