Serialize the symbol tables

base/loader/symtab.cc:
    Add support for clearing out the symbol table
    Add support for serializing the symbol table (clear on unserialize)
    Don't allow empty symbols to be entered into the table
base/loader/symtab.hh:
    Add support for clearing out the symbol table
    Add support for serializing the symbol table
sim/system.cc:
    Serialize the kernel, console, and palcode symbol tables so that
    we can capture any dynamic symbols that are added and so that we
    don't have to have the same kernel binary around to get the
    symbols right

--HG--
extra : convert_revision : 779888c88aa530f3adcd37dc7600a335951d05f7

1 files changed, 46 insertions, 6 deletions

diff --git a/base/loader/symtab.cc b/base/loader/symtab.cc
index e4590ac62..25f54f9bf 100644
--- a/base/loader/symtab.cc
+++ b/base/loader/symtab.cc
@@ -31,18 +31,29 @@
 #include <string>
 #include <vector>
 
-#include "sim/host.hh"
+#include "base/loader/symtab.hh"
 #include "base/misc.hh"
 #include "base/str.hh"
-#include "base/loader/symtab.hh"
+#include "sim/host.hh"
+#include "sim/serialize.hh"
 
 using namespace std;
 
 SymbolTable *debugSymbolTable = NULL;
 
+void
+SymbolTable::clear()
+{
+    addrTable.clear();
+    symbolTable.clear();
+}
+
 bool
 SymbolTable::insert(Addr address, string symbol)
 {
+    if (symbol.empty())
+        return false;
+
     if (!addrTable.insert(make_pair(address, symbol)).second)
         return false;
 
@@ -59,10 +70,8 @@ SymbolTable::load(const string &filename)
     string buffer;
     ifstream file(filename.c_str());
 
-    if (!file) {
-        cerr << "Can't open symbol table file " << filename << endl;
-        fatal("file error");
-    }
+    if (!file)
+        fatal("file error: Can't open symbol table file %s\n", filename);
 
     while (!file.eof()) {
         getline(file, buffer);
@@ -95,3 +104,34 @@ SymbolTable::load(const string &filename)
 
     return true;
 }
+
+void
+SymbolTable::serialize(const string &base, ostream &os)
+{
+    paramOut(os, base + ".size", addrTable.size());
+
+    int i = 0;
+    ATable::const_iterator p, end = addrTable.end();
+    for (p = addrTable.begin(); p != end; ++p) {
+        paramOut(os, csprintf("%s.addr_%d", base, i), p->first);
+        paramOut(os, csprintf("%s.symbol_%d", base, i), p->second);
+        ++i;
+    }
+}
+
+void
+SymbolTable::unserialize(const string &base, Checkpoint *cp,
+                         const string &section)
+{
+    clear();
+    int size;
+    paramIn(cp, section, base + ".size", size);
+    for (int i = 0; i < size; ++i) {
+        Addr addr;
+        std::string symbol;
+
+        paramIn(cp, section, csprintf("%s.addr_%d", base, i), addr);
+        paramIn(cp, section, csprintf("%s.symbol_%d", base, i), symbol);
+        insert(addr, symbol);
+    }
+}