ecoff_object.cc revision 12334
111723Sar4jc@virginia.edu/* 211723Sar4jc@virginia.edu * Copyright (c) 2003-2005 The Regents of The University of Michigan 311723Sar4jc@virginia.edu * All rights reserved. 411723Sar4jc@virginia.edu * 511723Sar4jc@virginia.edu * Redistribution and use in source and binary forms, with or without 611723Sar4jc@virginia.edu * modification, are permitted provided that the following conditions are 711723Sar4jc@virginia.edu * met: redistributions of source code must retain the above copyright 811723Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer; 911723Sar4jc@virginia.edu * redistributions in binary form must reproduce the above copyright 1011723Sar4jc@virginia.edu * notice, this list of conditions and the following disclaimer in the 1111723Sar4jc@virginia.edu * documentation and/or other materials provided with the distribution; 1211723Sar4jc@virginia.edu * neither the name of the copyright holders nor the names of its 1311723Sar4jc@virginia.edu * contributors may be used to endorse or promote products derived from 1411723Sar4jc@virginia.edu * this software without specific prior written permission. 1511723Sar4jc@virginia.edu * 1611723Sar4jc@virginia.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1711723Sar4jc@virginia.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1811723Sar4jc@virginia.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1911723Sar4jc@virginia.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2011723Sar4jc@virginia.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2111723Sar4jc@virginia.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2211723Sar4jc@virginia.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2311723Sar4jc@virginia.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2411723Sar4jc@virginia.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2511723Sar4jc@virginia.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2611723Sar4jc@virginia.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2711723Sar4jc@virginia.edu * 2811723Sar4jc@virginia.edu * Authors: Steve Reinhardt 2911723Sar4jc@virginia.edu */ 3011723Sar4jc@virginia.edu 3111723Sar4jc@virginia.edu#include "base/loader/ecoff_object.hh" 3211723Sar4jc@virginia.edu 3311723Sar4jc@virginia.edu#include <string> 3411723Sar4jc@virginia.edu 3511723Sar4jc@virginia.edu#include "base/loader/symtab.hh" 3611723Sar4jc@virginia.edu#include "base/logging.hh" 3711723Sar4jc@virginia.edu#include "base/trace.hh" 3811723Sar4jc@virginia.edu#include "base/types.hh" 3911723Sar4jc@virginia.edu#include "debug/Loader.hh" 4011723Sar4jc@virginia.edu 4111723Sar4jc@virginia.edu// Only alpha will be able to load ecoff files for now. 4211723Sar4jc@virginia.edu// base/types.hh and ecoff_machdep.h must be before the other .h files 4311723Sar4jc@virginia.edu// because they are are gathered from other code bases and require some 4411723Sar4jc@virginia.edu// typedefs from those files. 4512323Sar4jc@virginia.edu#include "arch/alpha/ecoff_machdep.h" 4612369Sar4jc@virginia.edu#include "base/loader/coff_sym.h" 4712322Sar4jc@virginia.edu#include "base/loader/coff_symconst.h" 4812320Sar4jc@virginia.edu#include "base/loader/exec_ecoff.h" 4912309Sar4jc@virginia.edu 5012321Sar4jc@virginia.eduusing namespace std; 5111723Sar4jc@virginia.edu 5211723Sar4jc@virginia.eduObjectFile * 5311723Sar4jc@virginia.eduEcoffObject::tryFile(const string &fname, size_t len, uint8_t *data) 5411723Sar4jc@virginia.edu{ 5511723Sar4jc@virginia.edu if (((ecoff_filehdr *)data)->f_magic == ECOFF_MAGIC_ALPHA) { 5611723Sar4jc@virginia.edu // it's Alpha ECOFF 5711723Sar4jc@virginia.edu return new EcoffObject(fname, len, data, 5811723Sar4jc@virginia.edu ObjectFile::Alpha, ObjectFile::Tru64); 5911723Sar4jc@virginia.edu } 6011723Sar4jc@virginia.edu else { 6111723Sar4jc@virginia.edu return NULL; 6211723Sar4jc@virginia.edu } 6311723Sar4jc@virginia.edu} 6411723Sar4jc@virginia.edu 6511723Sar4jc@virginia.edu 6611723Sar4jc@virginia.eduEcoffObject::EcoffObject(const string &_filename, size_t _len, uint8_t *_data, 6711723Sar4jc@virginia.edu Arch _arch, OpSys _opSys) 6811723Sar4jc@virginia.edu : ObjectFile(_filename, _len, _data, _arch, _opSys) 6911723Sar4jc@virginia.edu{ 7011723Sar4jc@virginia.edu execHdr = (ecoff_exechdr *)fileData; 7111723Sar4jc@virginia.edu fileHdr = &(execHdr->f); 7211723Sar4jc@virginia.edu aoutHdr = &(execHdr->a); 7311723Sar4jc@virginia.edu 7412120Sar4jc@virginia.edu entry = aoutHdr->entry; 7511723Sar4jc@virginia.edu 7611723Sar4jc@virginia.edu text.baseAddr = aoutHdr->text_start; 7711723Sar4jc@virginia.edu text.size = aoutHdr->tsize; 7811725Sar4jc@virginia.edu text.fileImage = fileData + ECOFF_TXTOFF(execHdr); 7911723Sar4jc@virginia.edu 8011723Sar4jc@virginia.edu data.baseAddr = aoutHdr->data_start; 8112119Sar4jc@virginia.edu data.size = aoutHdr->dsize; 8211723Sar4jc@virginia.edu data.fileImage = fileData + ECOFF_DATOFF(execHdr); 8311723Sar4jc@virginia.edu 8411723Sar4jc@virginia.edu bss.baseAddr = aoutHdr->bss_start; 8511723Sar4jc@virginia.edu bss.size = aoutHdr->bsize; 8611725Sar4jc@virginia.edu bss.fileImage = NULL; 8711723Sar4jc@virginia.edu 8811723Sar4jc@virginia.edu DPRINTFR(Loader, "text: 0x%x %d\ndata: 0x%x %d\nbss: 0x%x %d\n", 8911723Sar4jc@virginia.edu text.baseAddr, text.size, data.baseAddr, data.size, 9012695Sar4jc@virginia.edu bss.baseAddr, bss.size); 9111723Sar4jc@virginia.edu} 9211723Sar4jc@virginia.edu 9311723Sar4jc@virginia.edubool 9411723Sar4jc@virginia.eduEcoffObject::loadAllSymbols(SymbolTable *symtab, Addr base, Addr offset, 9511723Sar4jc@virginia.edu Addr addr_mask) 9611723Sar4jc@virginia.edu{ 9711723Sar4jc@virginia.edu bool retval = loadGlobalSymbols(symtab, base, offset, addr_mask); 9811723Sar4jc@virginia.edu retval = retval && loadLocalSymbols(symtab, base, offset, addr_mask); 9911723Sar4jc@virginia.edu return retval; 10011723Sar4jc@virginia.edu} 10112120Sar4jc@virginia.edu 10211723Sar4jc@virginia.edubool 103EcoffObject::loadGlobalSymbols(SymbolTable *symtab, Addr base, Addr offset, 104 Addr addr_mask) 105{ 106 if (!symtab) 107 return false; 108 109 if (fileHdr->f_magic != ECOFF_MAGIC_ALPHA) { 110 warn("loadGlobalSymbols: wrong magic on %s\n", filename); 111 return false; 112 } 113 114 ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr); 115 if (syms->magic != magicSym2) { 116 warn("loadGlobalSymbols: bad symbol header magic on %s\n", filename); 117 return false; 118 } 119 120 ecoff_extsym *ext_syms = (ecoff_extsym *)(fileData + syms->cbExtOffset); 121 122 char *ext_strings = (char *)(fileData + syms->cbSsExtOffset); 123 for (int i = 0; i < syms->iextMax; i++) { 124 ecoff_sym *entry = &(ext_syms[i].asym); 125 if (entry->iss != -1) 126 symtab->insert(entry->value, ext_strings + entry->iss); 127 } 128 129 return true; 130} 131 132bool 133EcoffObject::loadLocalSymbols(SymbolTable *symtab, Addr base, Addr offset, 134 Addr addr_mask) 135{ 136 if (!symtab) 137 return false; 138 139 if (fileHdr->f_magic != ECOFF_MAGIC_ALPHA) { 140 warn("loadGlobalSymbols: wrong magic on %s\n", filename); 141 return false; 142 } 143 144 ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr); 145 if (syms->magic != magicSym2) { 146 warn("loadGlobalSymbols: bad symbol header magic on %s\n", filename); 147 return false; 148 } 149 150 ecoff_sym *local_syms = (ecoff_sym *)(fileData + syms->cbSymOffset); 151 char *local_strings = (char *)(fileData + syms->cbSsOffset); 152 ecoff_fdr *fdesc = (ecoff_fdr *)(fileData + syms->cbFdOffset); 153 154 for (int i = 0; i < syms->ifdMax; i++) { 155 ecoff_sym *entry = (ecoff_sym *)(local_syms + fdesc[i].isymBase); 156 char *strings = (char *)(local_strings + fdesc[i].issBase); 157 for (int j = 0; j < fdesc[i].csym; j++) { 158 if (entry[j].st == stGlobal || entry[j].st == stProc) 159 if (entry[j].iss != -1) 160 symtab->insert(entry[j].value, strings + entry[j].iss); 161 } 162 } 163 164 for (int i = 0; i < syms->isymMax; i++) { 165 ecoff_sym *entry = &(local_syms[i]); 166 if (entry->st == stProc) 167 symtab->insert(entry->value, local_strings + entry->iss); 168 } 169 170 return true; 171} 172