1 files changed, 145 insertions, 0 deletions
diff --git a/src/base/loader/object_file.cc b/src/base/loader/object_file.cc
new file mode 100644
index 000000000..c6dfced1d
--- /dev/null
+++ b/src/base/loader/object_file.cc
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2002-2004 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 <list>
+#include <string>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "base/cprintf.hh"
+#include "base/loader/object_file.hh"
+#include "base/loader/symtab.hh"
+
+#include "base/loader/ecoff_object.hh"
+#include "base/loader/aout_object.hh"
+#include "base/loader/elf_object.hh"
+
+#include "mem/translating_port.hh"
+
+using namespace std;
+
+ObjectFile::ObjectFile(const string &_filename, int _fd,
+                       size_t _len, uint8_t *_data,
+                       Arch _arch, OpSys _opSys)
+    : filename(_filename), descriptor(_fd), fileData(_data), len(_len),
+      arch(_arch), opSys(_opSys)
+{
+}
+
+
+ObjectFile::~ObjectFile()
+{
+    close();
+}
+
+
+bool
+ObjectFile::loadSection(Section *sec, Port *memPort, Addr addrMask)
+{
+    if (sec->size != 0) {
+        Addr addr = sec->baseAddr & addrMask;
+        if (sec->fileImage) {
+            memPort->writeBlob(addr, sec->fileImage, sec->size);
+        }
+        else {
+            // no image: must be bss
+            memPort->memsetBlob(addr, 0, sec->size);
+        }
+    }
+    return true;
+}
+
+
+bool
+ObjectFile::loadSections(Port *memPort, Addr addrMask)
+{
+    return (loadSection(&text, memPort, addrMask)
+            && loadSection(&data, memPort, addrMask)
+            && loadSection(&bss, memPort, addrMask));
+}
+
+
+void
+ObjectFile::close()
+{
+    if (descriptor >= 0) {
+        ::close(descriptor);
+        descriptor = -1;
+    }
+
+    if (fileData) {
+        ::munmap(fileData, len);
+        fileData = NULL;
+    }
+}
+
+
+ObjectFile *
+createObjectFile(const string &fname)
+{
+    // open the file
+    int fd = open(fname.c_str(), O_RDONLY);
+    if (fd < 0) {
+        return NULL;
+    }
+
+    // find the length of the file by seeking to the end
+    size_t len = (size_t)lseek(fd, 0, SEEK_END);
+
+    // mmap the whole shebang
+    uint8_t *fileData =
+        (uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
+    if (fileData == MAP_FAILED) {
+        close(fd);
+        return NULL;
+    }
+
+    ObjectFile *fileObj = NULL;
+
+    // figure out what we have here
+    if ((fileObj = EcoffObject::tryFile(fname, fd, len, fileData)) != NULL) {
+        return fileObj;
+    }
+
+    if ((fileObj = AoutObject::tryFile(fname, fd, len, fileData)) != NULL) {
+        return fileObj;
+    }
+
+    if ((fileObj = ElfObject::tryFile(fname, fd, len, fileData)) != NULL) {
+        return fileObj;
+    }
+
+    // don't know what it is
+    close(fd);
+    munmap(fileData, len);
+    return NULL;
+}