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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string>
#include "base/loader/aout_object.hh"
#include "mem/memory.hh"
#include "base/loader/symtab.hh"
#include "base/trace.hh" // for DPRINTF
#include "base/loader/exec_aout.h"
using namespace std;
ObjectFile *
AoutObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
{
if (!N_BADMAG(*(aout_exechdr *)data)) {
// right now this is only used for Alpha PAL code
return new AoutObject(fname, fd, len, data,
ObjectFile::Alpha, ObjectFile::UnknownOpSys);
}
else {
return NULL;
}
}
AoutObject::AoutObject(const string &_filename, int _fd,
size_t _len, uint8_t *_data,
Arch _arch, OpSys _opSys)
: ObjectFile(_filename, _fd, _len, _data, _arch, _opSys)
{
execHdr = (aout_exechdr *)fileData;
entry = execHdr->entry;
text.baseAddr = N_TXTADDR(*execHdr);
text.size = execHdr->tsize;
data.baseAddr = N_DATADDR(*execHdr);
data.size = execHdr->dsize;
bss.baseAddr = N_BSSADDR(*execHdr);
bss.size = execHdr->bsize;
DPRINTFR(Loader, "text: 0x%x %d\ndata: 0x%x %d\nbss: 0x%x %d\n",
text.baseAddr, text.size, data.baseAddr, data.size,
bss.baseAddr, bss.size);
}
bool
AoutObject::loadSections(Memory *mem, bool loadPhys)
{
Addr textAddr = text.baseAddr;
Addr dataAddr = data.baseAddr;
if (loadPhys) {
textAddr &= (ULL(1) << 40) - 1;
dataAddr &= (ULL(1) << 40) - 1;
}
// Since we don't really have an MMU and all memory is
// zero-filled, there's no need to set up the BSS segment.
if (text.size != 0)
mem->prot_write(textAddr, fileData + N_TXTOFF(*execHdr), text.size);
if (data.size != 0)
mem->prot_write(dataAddr, fileData + N_DATOFF(*execHdr), data.size);
return true;
}
bool
AoutObject::loadGlobalSymbols(SymbolTable *symtab)
{
// a.out symbols not supported yet
return false;
}
bool
AoutObject::loadLocalSymbols(SymbolTable *symtab)
{
// a.out symbols not supported yet
return false;
}
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