add symbol opcode

--HG--
extra : convert_revision : e050d2c4fec33c41ac21b6f17b3be329b9521429

arch/alpha/isa_desc

@@ -2727,6 +2727,10 @@ decode OPCODE default Unknown::unknown() {
             0x52: m5switchcpu({{
 		AlphaPseudo::switchcpu(xc->xcBase());
 	    }}, IsNonSpeculative);
+            0x53: m5addsymbol({{
+		AlphaPseudo::addsymbol(xc->xcBase());
+	    }}, IsNonSpeculative);
+
 	}
     }
 #endif

arch/alpha/pseudo_inst.cc

@@ -46,6 +46,7 @@
 #include "sim/stats.hh"
 #include "sim/system.hh"
 #include "sim/debug.hh"
+#include "targetarch/vptr.hh"
 
 using namespace std;
 
@@ -132,6 +133,19 @@ namespace AlphaPseudo
         SetupEvent(Dump, when, repeat);
     }
 
+    void
+    addsymbol(ExecContext *xc)
+    {
+        Addr addr = xc->regs.intRegFile[16];
+        char symb[100];
+        CopyString(xc, symb, xc->regs.intRegFile[17], 100);
+        std::string symbol(symb);
+
+        DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
+
+        xc->system->kernelSymtab->insert(addr,symbol);
+    }
+
     void
     dumpresetstats(ExecContext *xc)
     {

arch/alpha/pseudo_inst.hh

@@ -50,4 +50,5 @@ namespace AlphaPseudo
     void readfile(ExecContext *xc);
     void debugbreak(ExecContext *xc);
     void switchcpu(ExecContext *xc);
+    void addsymbol(ExecContext *xc);
 }