1441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Create new ABS symbol. 2441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Copyright (C) 2002 Red Hat, Inc. 3cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng This file is part of Red Hat elfutils. 4441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Written by Ulrich Drepper <drepper@redhat.com>, 2002. 5441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 6cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is free software; you can redistribute it and/or modify 7cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng it under the terms of the GNU General Public License as published by the 8cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Free Software Foundation; version 2 of the License. 9cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 10cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is distributed in the hope that it will be useful, but 11cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng WITHOUT ANY WARRANTY; without even the implied warranty of 12cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng General Public License for more details. 14cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 15cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng You should have received a copy of the GNU General Public License along 16cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng with Red Hat elfutils; if not, write to the Free Software Foundation, 17cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 18cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 19cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is an included package of the Open Invention Network. 20cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng An included package of the Open Invention Network is a package for which 21cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Open Invention Network licensees cross-license their patents. No patent 22cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng license is granted, either expressly or impliedly, by designation as an 23cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng included package. Should you wish to participate in the Open Invention 24cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Network licensing program, please visit www.openinventionnetwork.com 25cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng <http://www.openinventionnetwork.com>. */ 26441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 27441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#ifdef HAVE_CONFIG_H 28441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project# include <config.h> 29441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#endif 30441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 31441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <inttypes.h> 32441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdio.h> 33441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdlib.h> 34441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <string.h> 35441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 36441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <libasmP.h> 37441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <system.h> 38441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 39441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 40441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Object for special COMMON section. */ 41441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectstatic const AsmScn_t __libasm_abs_scn = 42441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 43441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project .data = { 44441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project .main = { 45441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project .scn = ASM_ABS_SCN 46441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 47441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 48441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project }; 49441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 50441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 51441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectAsmSym_t * 52441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectasm_newabssym (ctx, name, size, value, type, binding) 53441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project AsmCtx_t *ctx; 54441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project const char *name; 55441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Xword size; 56441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GElf_Addr value; 57441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int type; 58441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int binding; 59441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 60441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project AsmSym_t *result; 61441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 62441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (ctx == NULL) 63441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Something went wrong before. */ 64441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return NULL; 65441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 66441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Common symbols are public. Therefore the user must provide a 67441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project name. */ 68441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (name == NULL) 69441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 70441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libasm_seterrno (ASM_E_INVALID); 71441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return NULL; 72441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 73441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 74441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_wrlock (ctx->lock); 75441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 76441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = (AsmSym_t *) malloc (sizeof (AsmSym_t)); 77441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (result == NULL) 78441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return NULL; 79441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 80441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->scn = (AsmScn_t *) &__libasm_abs_scn; 81441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->size = size; 82441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->type = type; 83441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->binding = binding; 84441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->symidx = 0; 85441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->strent = ebl_strtabadd (ctx->symbol_strtab, name, 0); 86441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 87441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The value of an ABS symbol must not be modified. Since there are 88441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project no subsection and the initial offset of the section is 0 we can 89441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project get the alignment recorded by storing it into the offset 90441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project field. */ 91441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result->offset = value; 92441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 93441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (ctx->textp)) 94441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 95441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* An absolute symbol can be defined by giving a symbol a 96441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project specific value. */ 97441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (binding == STB_GLOBAL) 98441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "\t.globl %s\n", name); 99441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (binding == STB_WEAK) 100441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "\t.weak %s\n", name); 101441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 102441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (type == STT_OBJECT) 103441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "\t.type %s,@object\n", name); 104441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (type == STT_FUNC) 105441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "\t.type %s,@function\n", name); 106441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 107441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "%s = %llu\n", 108441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project name, (unsigned long long int) value); 109441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 110441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (size != 0) 111441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fprintf (ctx->out.file, "\t.size %s, %llu\n", 112441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project name, (unsigned long long int) size); 113441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 114441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 115441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 116441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Put the symbol in the hash table so that we can later find it. */ 117441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (asm_symbol_tab_insert (&ctx->symbol_tab, elf_hash (name), result) 118441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project != 0) 119441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 120441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The symbol already exists. */ 121441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libasm_seterrno (ASM_E_DUPLSYM); 122441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project free (result); 123441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = NULL; 124441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 125441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else if (name != NULL && asm_emit_symbol_p (name)) 126441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Only count non-private symbols. */ 127441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ++ctx->nsymbol_tab; 128441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 129441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 130441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_unlock (ctx->lock); 131441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 132441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 133441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 134