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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/ecoff_object.hh"
#include "mem/memory.hh"
#include "base/loader/symtab.hh"
#include "base/trace.hh" // for DPRINTF
#include "base/loader/exec_ecoff.h"
#include "base/loader/coff_sym.h"
#include "base/loader/coff_symconst.h"
using namespace std;
ObjectFile *
EcoffObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
{
if (((ecoff_filehdr *)data)->f_magic == ECOFF_MAGIC_ALPHA) {
// it's Alpha ECOFF
return new EcoffObject(fname, fd, len, data,
ObjectFile::Alpha, ObjectFile::Tru64);
}
else {
return NULL;
}
}
EcoffObject::EcoffObject(const string &_filename, int _fd,
size_t _len, uint8_t *_data,
Arch _arch, OpSys _opSys)
: ObjectFile(_filename, _fd, _len, _data, _arch, _opSys)
{
execHdr = (ecoff_exechdr *)fileData;
fileHdr = &(execHdr->f);
aoutHdr = &(execHdr->a);
entry = aoutHdr->entry;
text.baseAddr = aoutHdr->text_start;
text.size = aoutHdr->tsize;
data.baseAddr = aoutHdr->data_start;
data.size = aoutHdr->dsize;
bss.baseAddr = aoutHdr->bss_start;
bss.size = aoutHdr->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
EcoffObject::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.
mem->prot_write(textAddr, fileData + ECOFF_TXTOFF(execHdr), text.size);
mem->prot_write(dataAddr, fileData + ECOFF_DATOFF(execHdr), data.size);
return true;
}
bool
EcoffObject::loadGlobalSymbols(SymbolTable *symtab)
{
if (!symtab)
return false;
if (fileHdr->f_magic != ECOFF_MAGIC_ALPHA) {
warn("loadGlobalSymbols: wrong magic on %s\n", filename);
return false;
}
ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr);
if (syms->magic != magicSym2) {
warn("loadGlobalSymbols: bad symbol header magic on %s\n", filename);
return false;
}
ecoff_extsym *ext_syms = (ecoff_extsym *)(fileData + syms->cbExtOffset);
char *ext_strings = (char *)(fileData + syms->cbSsExtOffset);
for (int i = 0; i < syms->iextMax; i++) {
ecoff_sym *entry = &(ext_syms[i].asym);
if (entry->iss != -1)
symtab->insert(entry->value, ext_strings + entry->iss);
}
return true;
}
bool
EcoffObject::loadLocalSymbols(SymbolTable *symtab)
{
if (!symtab)
return false;
if (fileHdr->f_magic != ECOFF_MAGIC_ALPHA) {
warn("loadGlobalSymbols: wrong magic on %s\n", filename);
return false;
}
ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr);
if (syms->magic != magicSym2) {
warn("loadGlobalSymbols: bad symbol header magic on %s\n", filename);
return false;
}
ecoff_sym *local_syms = (ecoff_sym *)(fileData + syms->cbSymOffset);
char *local_strings = (char *)(fileData + syms->cbSsOffset);
ecoff_fdr *fdesc = (ecoff_fdr *)(fileData + syms->cbFdOffset);
for (int i = 0; i < syms->ifdMax; i++) {
ecoff_sym *entry = (ecoff_sym *)(local_syms + fdesc[i].isymBase);
char *strings = (char *)(local_strings + fdesc[i].issBase);
for (int j = 0; j < fdesc[i].csym; j++) {
if (entry[j].st == stGlobal || entry[j].st == stProc)
if (entry[j].iss != -1)
symtab->insert(entry[j].value, strings + entry[j].iss);
}
}
for (int i = 0; i < syms->isymMax; i++) {
ecoff_sym *entry = &(local_syms[i]);
if (entry->st == stProc)
symtab->insert(entry->value, local_strings + entry->iss);
}
return true;
}
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