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Diffstat (limited to 'src/base/loader/ecoff_object.cc')
| -rw-r--r-- | src/base/loader/ecoff_object.cc | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/base/loader/ecoff_object.cc b/src/base/loader/ecoff_object.cc new file mode 100644 index 000000000..80917ee9c --- /dev/null +++ b/src/base/loader/ecoff_object.cc @@ -0,0 +1,153 @@ +/* + * 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 "base/misc.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; + text.fileImage = fileData + ECOFF_TXTOFF(execHdr); + + data.baseAddr = aoutHdr->data_start; + data.size = aoutHdr->dsize; + data.fileImage = fileData + ECOFF_DATOFF(execHdr); + + bss.baseAddr = aoutHdr->bss_start; + bss.size = aoutHdr->bsize; + bss.fileImage = NULL; + + 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::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; +} |