Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/src/base/loader/object_file.hh

@@ -0,0 +1,136 @@
+/*
+ * 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.
+ *
+ * Authors: Nathan Binkert
+ *          Steve Reinhardt
+ */
+
+#ifndef __OBJECT_FILE_HH__
+#define __OBJECT_FILE_HH__
+
+#include <limits>
+#include <string>
+
+#include "base/types.hh"
+
+class PortProxy;
+class SymbolTable;
+
+class ObjectFile
+{
+  public:
+
+    enum Arch {
+        UnknownArch,
+        Alpha,
+        SPARC64,
+        SPARC32,
+        Mips,
+        X86_64,
+        I386,
+        Arm,
+        Thumb,
+        Power
+    };
+
+    enum OpSys {
+        UnknownOpSys,
+        Tru64,
+        Linux,
+        Solaris,
+        LinuxArmOABI
+    };
+
+  protected:
+    const std::string filename;
+    int descriptor;
+    uint8_t *fileData;
+    size_t len;
+
+    Arch  arch;
+    OpSys opSys;
+
+    ObjectFile(const std::string &_filename, int _fd,
+               size_t _len, uint8_t *_data,
+               Arch _arch, OpSys _opSys);
+
+  public:
+    virtual ~ObjectFile();
+
+    void close();
+
+    virtual bool loadSections(PortProxy& memProxy, Addr addrMask =
+            std::numeric_limits<Addr>::max());
+    virtual bool loadGlobalSymbols(SymbolTable *symtab, Addr addrMask =
+            std::numeric_limits<Addr>::max()) = 0;
+    virtual bool loadLocalSymbols(SymbolTable *symtab, Addr addrMask =
+            std::numeric_limits<Addr>::max()) = 0;
+
+    virtual bool isDynamic() { return false; }
+    virtual bool hasTLS() { return false; }
+
+    Arch  getArch()  const { return arch; }
+    OpSys getOpSys() const { return opSys; }
+
+  protected:
+
+    struct Section {
+        Addr     baseAddr;
+        uint8_t *fileImage;
+        size_t   size;
+    };
+
+    Addr entry;
+    Addr globalPtr;
+
+    Section text;
+    Section data;
+    Section bss;
+
+    bool loadSection(Section *sec, PortProxy& memProxy, Addr addrMask);
+    void setGlobalPointer(Addr global_ptr) { globalPtr = global_ptr; }
+
+  public:
+    Addr entryPoint() const { return entry; }
+
+    Addr globalPointer() const { return globalPtr; }
+
+    Addr textBase() const { return text.baseAddr; }
+    Addr dataBase() const { return data.baseAddr; }
+    Addr bssBase() const { return bss.baseAddr; }
+
+    size_t textSize() const { return text.size; }
+    size_t dataSize() const { return data.size; }
+    size_t bssSize() const { return bss.size; }
+
+    void setTextBase(Addr a) { text.baseAddr = a; }
+};
+
+ObjectFile *createObjectFile(const std::string &fname, bool raw = false);
+
+
+#endif // __OBJECT_FILE_HH__