gem5: codebase patched to compile with ag++

This changes allows us to compile the gem5 simulator with ag++. It
was tested with ag++ v0.8, built Apr 18 2013. Most of the changes
are preprocessor directives like #ifndef __puma which have been
inserted into the gem5 code. Unfortunately, a python script and a
SWIG input file have been patched, too.
Additionally, the CMake file has been updated. A single call to
"make" now invokes the ag++ (instead of the g++) compiler front
end. The new CMake target "gem5-allclean" should be used to clean
the current project when building FailGem5. In addition to cleaning
the Fail build directory, it also invokes "scons -c" in the gem5
build directory; that is, gem5 is cleaned as well.

Change-Id: I20a92f025f34f626b81e30f2c873baeba189f83b

simulators/gem5/src/sim/insttracer.hh

@@ -114,9 +114,12 @@ class InstRecord
     void setData(uint16_t d) { data.as_int = d; data_status = DataInt16; }
     void setData(uint8_t d) { data.as_int = d; data_status = DataInt8; }
 
+// DanceOS modification
+#ifndef __puma // bug #375
     void setData(int64_t d) { setData((uint64_t)d); }
     void setData(int32_t d) { setData((uint32_t)d); }
     void setData(int16_t d) { setData((uint16_t)d); }
+#endif
     void setData(int8_t d)  { setData((uint8_t)d); }
 
     void setData(double d) { data.as_double = d; data_status = DataDouble; }

simulators/gem5/src/sim/process.cc

@@ -198,7 +198,9 @@ Process::openInputFile(const string &filename)
 
     if (fd == -1) {
         perror(NULL);
+#ifndef __puma // DanceOS (invalid operand to binary `<<')
         cerr << "unable to open \"" << filename << "\" for reading\n";
+#endif
         fatal("can't open input file");
     }
 
@@ -213,7 +215,9 @@ Process::openOutputFile(const string &filename)
 
     if (fd == -1) {
         perror(NULL);
+#ifndef __puma // DanceOS (invalid operand to binary `<<')
         cerr << "unable to open \"" << filename << "\" for writing\n";
+#endif
         fatal("can't open output file");
     }
 

simulators/gem5/src/sim/syscall_emul.cc

@@ -796,7 +796,8 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
         ctc->clearArchRegs();
 
         // Arch-specific cloning code
-        #if THE_ISA == ALPHA_ISA or THE_ISA == X86_ISA
+//      #if THE_ISA == ALPHA_ISA or THE_ISA == X86_ISA
+        #if THE_ISA == ALPHA_ISA || THE_ISA == X86_ISA // DanceOS: "or" replaced with "||"
             // Cloning the misc. regs for these archs is enough
             TheISA::copyMiscRegs(tc, ctc);
         #elif THE_ISA == SPARC_ISA

simulators/gem5/src/sim/syscall_emul.hh

@@ -934,6 +934,7 @@ fstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
         return -EBADF;
 
     struct statfs hostBuf;
+    int fstatfs(int fd, struct statfs *buf); // DanceOS (added forward decl.)
     int result = fstatfs(fd, &hostBuf);
 
     if (result < 0)

simulators/gem5/src/sim/vptr.hh

@@ -72,7 +72,9 @@ class VPtr
             return;
 
         FSTranslatingPortProxy &proxy = tc->getVirtProxy();
+#ifndef __puma // DanceOS (no matching function for call to `readBlob')
         proxy.readBlob(ptr, buffer, sizeof(T));
+#endif
     }
 
     bool