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-rw-r--r--base/ecoff_object.cc169
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diff --git a/base/ecoff_object.cc b/base/ecoff_object.cc
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+/*
+ * Copyright (c) 2003 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 "ecoff_object.hh"
+
+#include "functional_memory.hh"
+#include "symtab.hh"
+
+#include "trace.hh" // for DPRINTF
+
+#include "exec_ecoff.h"
+#include "coff_sym.h"
+#include "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);
+ }
+ else {
+ return NULL;
+ }
+}
+
+
+EcoffObject::EcoffObject(const string &_filename, int _fd,
+ size_t _len, uint8_t *_data)
+ : ObjectFile(_filename, _fd, _len, _data)
+{
+ 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(FunctionalMemory *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) {
+ cprintf("wrong magic\n");
+ return false;
+ }
+
+ ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr);
+ if (syms->magic != magicSym2) {
+ cprintf("bad symbol header magic\n");
+ exit(1);
+ }
+
+ 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) {
+ cprintf("wrong magic\n");
+ return false;
+ }
+
+ ecoff_symhdr *syms = (ecoff_symhdr *)(fileData + fileHdr->f_symptr);
+ if (syms->magic != magicSym2) {
+ cprintf("bad symbol header magic\n");
+ exit(1);
+ }
+
+ 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;
+}