Support loading in a symbol file.

arch/alpha/freebsd/system.cc:
arch/alpha/isa/decoder.isa:
arch/alpha/linux/system.cc:
arch/alpha/system.cc:
arch/alpha/tru64/system.cc:
    Let symbol files be read in so that profiling can happen on the binaries as well.
python/m5/objects/System.py:
    Add in symbol files.
sim/pseudo_inst.cc:
    Load in a specified symbol file.
sim/pseudo_inst.hh:
    Allow for symbols to be loaded.
sim/system.hh:
    Support symbol file.
util/m5/m5.c:
util/m5/m5op.S:
    Add support to m5 util for loading symbols (and readfile).

--HG--
extra : convert_revision : f10c1049bcd7b22b98c73052c0666b964aff222b

sim/pseudo_inst.cc

@@ -149,6 +149,54 @@ namespace AlphaPseudo
         SimExit(when, "m5_exit instruction encountered");
     }
 
+    void
+    loadsymbol(ExecContext *xc)
+    {
+        const string &filename = xc->getCpuPtr()->system->params()->symbolfile;
+        if (filename.empty()) {
+            return;
+        }
+
+        std::string buffer;
+        ifstream file(filename.c_str());
+
+        if (!file)
+            fatal("file error: Can't open symbol table file %s\n", filename);
+
+        while (!file.eof()) {
+            getline(file, buffer);
+
+            if (buffer.empty())
+                continue;
+
+            int idx = buffer.find(' ');
+            if (idx == string::npos)
+                continue;
+
+            string address = "0x" + buffer.substr(0, idx);
+            eat_white(address);
+            if (address.empty())
+                continue;
+
+            // Skip over letter and space
+            string symbol = buffer.substr(idx + 3);
+            eat_white(symbol);
+            if (symbol.empty())
+                continue;
+
+            Addr addr;
+            if (!to_number(address, addr))
+                continue;
+
+            if (!xc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
+                continue;
+
+
+            DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
+        }
+        file.close();
+    }
+
     void
     resetstats(ExecContext *xc, Tick delay, Tick period)
     {

sim/pseudo_inst.hh

@@ -51,6 +51,7 @@ namespace AlphaPseudo
     void ivle(ExecContext *xc);
     void m5exit(ExecContext *xc, Tick delay);
     void m5exit_old(ExecContext *xc);
+    void loadsymbol(ExecContext *xc);
     void resetstats(ExecContext *xc, Tick delay, Tick period);
     void dumpstats(ExecContext *xc, Tick delay, Tick period);
     void dumpresetstats(ExecContext *xc, Tick delay, Tick period);

sim/system.hh

@@ -137,6 +137,7 @@ class System : public SimObject
 
         std::string kernel_path;
         std::string readfile;
+        std::string symbolfile;
     };
 
   protected: