Filled out the object file loader so it can load object files for several OSs and architectures.

SConscript:
    Added ./libelf as an include search directory. There might be a better spot for this than where I put it.
arch/SConscript:
    Combined the linux_process.h and tru64_process.h into process.h. This allows each ISA to support processes from arbitrary OSs.
arch/alpha/SConscript:
    Added process.cc as a source file. It provides an implementation of createProcess, which takes an object_file object and creates the appropriate process object, or dies.
base/loader/elf_object.cc:
    Actually extract the OS and architecture from the elf file, rather than always guessing Alpha and Linux.
base/loader/object_file.hh:
    Added constants for SPARC, MIPS, and Solaris, and changed the include for the Addr type.
sim/process.cc:
    Pushed creation of specific process objects into the ISA specific code.

--HG--
extra : convert_revision : b4754e7ca8328672d07e1394c4d162e199606b53

1 files changed, 5 insertions, 23 deletions

diff --git a/sim/process.cc b/sim/process.cc
index e3cae2855..fddd9a0b9 100644
--- a/sim/process.cc
+++ b/sim/process.cc
@@ -48,8 +48,7 @@
 #include "sim/stats.hh"
 #include "sim/syscall_emul.hh"
 
-#include "arch/tru64_process.hh"
-#include "arch/linux_process.hh"
+#include "arch/process.hh"
 
 using namespace std;
 using namespace TheISA;
@@ -376,27 +375,10 @@ LiveProcess::create(const string &nm,
         fatal("Can't load object file %s", executable);
     }
 
-    // check object type & set up syscall emulation pointer
-    if (objFile->getArch() == ObjectFile::Alpha) {
-        switch (objFile->getOpSys()) {
-          case ObjectFile::Tru64:
-            process = new AlphaTru64Process(nm, objFile,
-                                            stdin_fd, stdout_fd, stderr_fd,
-                                            argv, envp);
-            break;
-
-          case ObjectFile::Linux:
-            process = new AlphaLinuxProcess(nm, objFile,
-                                            stdin_fd, stdout_fd, stderr_fd,
-                                            argv, envp);
-            break;
-
-          default:
-            fatal("Unknown/unsupported operating system.");
-        }
-    } else {
-        fatal("Unknown object file architecture.");
-    }
+    // set up syscall emulation pointer for the current ISA
+    process = createProcess(nm, objFile,
+                            stdin_fd, stdout_fd, stderr_fd,
+                            argv, envp);
 
     delete objFile;