aout_object.cc revision 2665:a124942bacb8
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Steve Reinhardt 29 */ 30 31#include <string> 32 33#include "base/loader/aout_object.hh" 34 35#include "base/loader/symtab.hh" 36 37#include "base/trace.hh" // for DPRINTF 38 39#include "base/loader/exec_aout.h" 40 41using namespace std; 42 43ObjectFile * 44AoutObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data) 45{ 46 if (!N_BADMAG(*(aout_exechdr *)data)) { 47 // right now this is only used for Alpha PAL code 48 return new AoutObject(fname, fd, len, data, 49 ObjectFile::Alpha, ObjectFile::UnknownOpSys); 50 } 51 else { 52 return NULL; 53 } 54} 55 56 57AoutObject::AoutObject(const string &_filename, int _fd, 58 size_t _len, uint8_t *_data, 59 Arch _arch, OpSys _opSys) 60 : ObjectFile(_filename, _fd, _len, _data, _arch, _opSys) 61{ 62 execHdr = (aout_exechdr *)fileData; 63 64 entry = execHdr->entry; 65 66 text.baseAddr = N_TXTADDR(*execHdr); 67 text.size = execHdr->tsize; 68 text.fileImage = fileData + N_TXTOFF(*execHdr); 69 70 data.baseAddr = N_DATADDR(*execHdr); 71 data.size = execHdr->dsize; 72 data.fileImage = fileData + N_DATOFF(*execHdr); 73 74 bss.baseAddr = N_BSSADDR(*execHdr); 75 bss.size = execHdr->bsize; 76 bss.fileImage = NULL; 77 78 DPRINTFR(Loader, "text: 0x%x %d\ndata: 0x%x %d\nbss: 0x%x %d\n", 79 text.baseAddr, text.size, data.baseAddr, data.size, 80 bss.baseAddr, bss.size); 81} 82 83 84bool 85AoutObject::loadGlobalSymbols(SymbolTable *symtab) 86{ 87 // a.out symbols not supported yet 88 return false; 89} 90 91bool 92AoutObject::loadLocalSymbols(SymbolTable *symtab) 93{ 94 // a.out symbols not supported yet 95 return false; 96} 97