diff --git a/debugger/assets/styles/app.css b/debugger/assets/styles/app.css
index fd7b6a8de..b2bea1bd7 100644
--- a/debugger/assets/styles/app.css
+++ b/debugger/assets/styles/app.css
@@ -134,7 +134,7 @@ body {
   flex: 0 0 auto;
   display: flex;
   flex-flow: column nowrap;
-  max-width: 200px;
+  min-width: 270px;
 }
 .debugger-fnlist-header {
   order: 1;
diff --git a/src/alloy/runtime/module.cc b/src/alloy/runtime/module.cc
index 6d7101dd5..4259eb829 100644
--- a/src/alloy/runtime/module.cc
+++ b/src/alloy/runtime/module.cc
@@ -9,12 +9,17 @@
 
 #include <alloy/runtime/module.h>
 
+#include <fstream>
+#include <sstream>
+
+#include <alloy/runtime/runtime.h>
+
 using namespace alloy;
 using namespace alloy::runtime;
 
 
-Module::Module(Memory* memory) :
-    memory_(memory) {
+Module::Module(Runtime* runtime) :
+    runtime_(runtime), memory_(runtime->memory()) {
   lock_ = AllocMutex(10000);
 }
 
@@ -164,3 +169,74 @@ void Module::ForEachFunction(std::function<void (FunctionInfo*)> callback) {
   }
   UnlockMutex(lock_);
 }
+
+int Module::ReadMap(const char* file_name) {
+  std::ifstream infile(file_name);
+
+  // Skip until '  Address'. Skip the next blank line.
+  std::string line;
+  while (std::getline(infile, line)) {
+    if (line.find("  Address") == 0) {
+      // Skip the next line.
+      std::getline(infile, line);
+      break;
+    }
+  }
+
+  std::stringstream sstream;
+  std::string ignore;
+  std::string name;
+  std::string addr_str;
+  std::string type_str;
+  while (std::getline(infile, line)) {
+    // Remove newline.
+    while (line.size() &&
+           (line[line.size() - 1] == '\r' ||
+            line[line.size() - 1] == '\n')) {
+      line.erase(line.end() - 1);
+    }
+
+    // End when we hit the first whitespace.
+    if (line.size() == 0) {
+      break;
+    }
+
+    // Line is [ws][ignore][ws][name][ws][hex addr][ws][(f)][ws][library]
+    sstream.clear();
+    sstream.str(line);
+    sstream >> std::ws;
+    sstream >> ignore;
+    sstream >> std::ws;
+    sstream >> name;
+    sstream >> std::ws;
+    sstream >> addr_str;
+    sstream >> std::ws;
+    sstream >> type_str;
+
+    uint32_t address = (uint32_t)strtoul(addr_str.c_str(), NULL, 16);
+    if (!address) {
+      continue;
+    }
+
+    if (type_str == "f") {
+      // Function.
+      FunctionInfo* fn_info;
+      if (runtime_->LookupFunctionInfo(this, address, &fn_info)) {
+        continue;
+      }
+      // Don't overwrite names we've set elsewhere.
+      if (!fn_info->name()) {
+        // If it's an mangled C++ name (?name@...) just use the name.
+        if (name[0] == '?') {
+          size_t at = name.find('@');
+          name = name.substr(1, at - 1);
+        }
+        fn_info->set_name(name.c_str());
+      }
+    } else {
+      // Variable.
+    }
+  }
+
+  return 0;
+}
diff --git a/src/alloy/runtime/module.h b/src/alloy/runtime/module.h
index c294a66b1..bb86f0dc2 100644
--- a/src/alloy/runtime/module.h
+++ b/src/alloy/runtime/module.h
@@ -21,11 +21,12 @@ namespace alloy {
 namespace runtime {
 
 class Function;
+class Runtime;
 
 
 class Module {
 public:
-  Module(Memory* memory);
+  Module(Runtime* runtime);
   virtual ~Module();
 
   Memory* memory() const { return memory_; }
@@ -45,12 +46,15 @@ public:
 
   void ForEachFunction(std::function<void (FunctionInfo*)> callback);
 
+  int ReadMap(const char* file_name);
+
 private:
   SymbolInfo::Status DeclareSymbol(
       SymbolInfo::Type type, uint64_t address, SymbolInfo** out_symbol_info);
   SymbolInfo::Status DefineSymbol(SymbolInfo* symbol_info);
 
 protected:
+  Runtime* runtime_;
   Memory* memory_;
 
 private:
diff --git a/src/alloy/runtime/raw_module.cc b/src/alloy/runtime/raw_module.cc
index 2993514f5..c152dcf1c 100644
--- a/src/alloy/runtime/raw_module.cc
+++ b/src/alloy/runtime/raw_module.cc
@@ -13,10 +13,10 @@ using namespace alloy;
 using namespace alloy::runtime;
 
 
-RawModule::RawModule(Memory* memory) :
+RawModule::RawModule(Runtime* runtime) :
     name_(0),
     base_address_(0), low_address_(0), high_address_(0),
-    Module(memory) {
+    Module(runtime) {
 }
 
 RawModule::~RawModule() {
diff --git a/src/alloy/runtime/raw_module.h b/src/alloy/runtime/raw_module.h
index 34852d416..230e44f7e 100644
--- a/src/alloy/runtime/raw_module.h
+++ b/src/alloy/runtime/raw_module.h
@@ -19,7 +19,7 @@ namespace runtime {
 
 class RawModule : public Module {
 public:
-  RawModule(Memory* memory);
+  RawModule(Runtime* runtime);
   virtual ~RawModule();
 
   int LoadFile(uint64_t base_address, const char* path);
diff --git a/src/alloy/runtime/runtime.cc b/src/alloy/runtime/runtime.cc
index dbf9c0825..d27bec265 100644
--- a/src/alloy/runtime/runtime.cc
+++ b/src/alloy/runtime/runtime.cc
@@ -195,11 +195,16 @@ int Runtime::LookupFunctionInfo(
     return 1;
   }
 
+  return LookupFunctionInfo(code_module, address, out_symbol_info);
+}
+
+int Runtime::LookupFunctionInfo(Module* module, uint64_t address,
+                                FunctionInfo** out_symbol_info) {
   // Atomic create/lookup symbol in module.
   // If we get back the NEW flag we must declare it now.
   FunctionInfo* symbol_info = NULL;
   SymbolInfo::Status symbol_status =
-      code_module->DeclareFunction(address, &symbol_info);
+      module->DeclareFunction(address, &symbol_info);
   if (symbol_status == SymbolInfo::STATUS_NEW) {
     // Symbol is undeclared, so declare now.
     int result = frontend_->DeclareFunction(symbol_info);
diff --git a/src/alloy/runtime/runtime.h b/src/alloy/runtime/runtime.h
index df6b96782..dc3e4be4f 100644
--- a/src/alloy/runtime/runtime.h
+++ b/src/alloy/runtime/runtime.h
@@ -47,6 +47,8 @@ public:
   ModuleList GetModules();
 
   int LookupFunctionInfo(uint64_t address, FunctionInfo** out_symbol_info);
+  int LookupFunctionInfo(Module* module, uint64_t address,
+                         FunctionInfo** out_symbol_info);
   int ResolveFunction(uint64_t address, Function** out_function);
 
   void AddRegisterAccessCallbacks(
diff --git a/src/alloy/runtime/symbol_info.cc b/src/alloy/runtime/symbol_info.cc
index 407dc69a0..3a486840d 100644
--- a/src/alloy/runtime/symbol_info.cc
+++ b/src/alloy/runtime/symbol_info.cc
@@ -15,10 +15,20 @@ using namespace alloy::runtime;
 
 SymbolInfo::SymbolInfo(Type type, Module* module, uint64_t address) :
     type_(type), status_(STATUS_DEFINING),
-    module_(module), address_(address) {
+    module_(module), address_(address), name_(0) {
 }
 
 SymbolInfo::~SymbolInfo() {
+  if (name_) {
+    xe_free(name_);
+  }
+}
+
+void SymbolInfo::set_name(const char* name) {
+  if (name_) {
+    xe_free(name_);
+  }
+  name_ = xestrdupa(name);
 }
 
 FunctionInfo::FunctionInfo(Module* module, uint64_t address) :
diff --git a/src/alloy/runtime/symbol_info.h b/src/alloy/runtime/symbol_info.h
index a108adc7e..c91fda40a 100644
--- a/src/alloy/runtime/symbol_info.h
+++ b/src/alloy/runtime/symbol_info.h
@@ -44,11 +44,16 @@ public:
   void set_status(Status value) { status_ = value; }
   uint64_t address() const { return address_; }
 
+  const char* name() const { return name_; }
+  void set_name(const char* name);
+
 protected:
   Type      type_;
   Module*   module_;
   Status    status_;
   uint64_t  address_;
+
+  char*     name_;
 };
 
 class FunctionInfo : public SymbolInfo {
diff --git a/src/xenia/cpu/processor.cc b/src/xenia/cpu/processor.cc
index a7d7f1fb5..e4da4a76d 100644
--- a/src/xenia/cpu/processor.cc
+++ b/src/xenia/cpu/processor.cc
@@ -199,11 +199,14 @@ json_t* Processor::OnDebugRequest(
     json_t* list = json_array();
     module->ForEachFunction([&](FunctionInfo* info) {
       json_t* fn_json = json_object();
-      // TODO(benvanik): get name
+      const char* name = info->name();
       char name_buffer[32];
-      xesnprintfa(name_buffer, XECOUNT(name_buffer), "sub_%.8X",
-                  info->address());
-      json_t* name_json = json_string(name_buffer);
+      if (!name) {
+        xesnprintfa(name_buffer, XECOUNT(name_buffer), "sub_%.8X",
+                    info->address());
+        name = name_buffer;
+      }
+      json_t* name_json = json_string(name);
       json_object_set_new(fn_json, "name", name_json);
       json_t* address_json = json_integer(info->address());
       json_object_set_new(fn_json, "address", address_json);
@@ -241,11 +244,14 @@ json_t* Processor::OnDebugRequest(
     }
 
     json_t* fn_json = json_object();
-    // TODO(benvanik): get name
+    const char* name = info->name();
     char name_buffer[32];
-    xesnprintfa(name_buffer, XECOUNT(name_buffer), "sub_%.8X",
-                info->address());
-    json_t* name_json = json_string(name_buffer);
+    if (!name) {
+      xesnprintfa(name_buffer, XECOUNT(name_buffer), "sub_%.8X",
+                  info->address());
+      name = name_buffer;
+    }
+    json_t* name_json = json_string(name);
     json_object_set_new(fn_json, "name", name_json);
     json_t* start_address_json = json_integer(info->address());
     json_object_set_new(fn_json, "startAddress", start_address_json);
diff --git a/src/xenia/cpu/xex_module.cc b/src/xenia/cpu/xex_module.cc
index 2ee69ff45..d782297f2 100644
--- a/src/xenia/cpu/xex_module.cc
+++ b/src/xenia/cpu/xex_module.cc
@@ -10,7 +10,7 @@
 #include <xenia/cpu/xex_module.h>
 
 #include <alloy/runtime/tracing.h>
-
+#include <xenia/cpu/cpu-private.h>
 #include <xenia/cpu/xenon_runtime.h>
 #include <xenia/export_resolver.h>
 
@@ -31,7 +31,7 @@ XexModule::XexModule(
     runtime_(runtime),
     name_(0), path_(0), xex_(0),
     base_address_(0), low_address_(0), high_address_(0),
-    Module(runtime->memory()) {
+    Module(runtime) {
 }
 
 XexModule::~XexModule() {
@@ -82,7 +82,11 @@ int XexModule::Load(const char* name, const char* path, xe_xex2_ref xex) {
   name_ = xestrdupa(name);
   path_ = xestrdupa(path);
   // TODO(benvanik): debug info
-  // TODO(benvanik): load map file.
+
+  // Load a specified module map and diff.
+  if (FLAGS_load_module_map.size()) {
+    ReadMap(FLAGS_load_module_map.c_str());
+  }
 
   return 0;
 }
@@ -158,7 +162,7 @@ int XexModule::SetupLibraryImports(const xe_xex2_import_library_t* library) {
       fn_info->set_end_address(info->thunk_address + 16 - 4);
       //fn->type = FunctionSymbol::Kernel;
       //fn->kernel_export = kernel_export;
-      //fn->set_name(name);
+      fn_info->set_name(name);
       fn_info->set_status(SymbolInfo::STATUS_DECLARED);
 
       ExternFunction::Handler handler = 0;
@@ -406,7 +410,7 @@ int XexModule::FindSaveRest() {
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
       symbol_info->set_end_address(address + (31 - n) * 4 + 2 * 4);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagSaveGprLr;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_PROLOG);
@@ -419,7 +423,7 @@ int XexModule::FindSaveRest() {
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
       symbol_info->set_end_address(address + (31 - n) * 4 + 3 * 4);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagRestGprLr;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_EPILOG_RETURN);
@@ -434,7 +438,7 @@ int XexModule::FindSaveRest() {
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
       symbol_info->set_end_address(address + (31 - n) * 4 + 1 * 4);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagSaveFpr;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_PROLOG);
@@ -447,7 +451,7 @@ int XexModule::FindSaveRest() {
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
       symbol_info->set_end_address(address + (31 - n) * 4 + 1 * 4);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagRestFpr;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_EPILOG);
@@ -466,7 +470,7 @@ int XexModule::FindSaveRest() {
       xesnprintfa(name, XECOUNT(name), "__savevmx_%d", n);
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagSaveVmx;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_PROLOG);
@@ -478,7 +482,7 @@ int XexModule::FindSaveRest() {
       xesnprintfa(name, XECOUNT(name), "__savevmx_%d", n);
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagSaveVmx;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_PROLOG);
@@ -490,7 +494,7 @@ int XexModule::FindSaveRest() {
       xesnprintfa(name, XECOUNT(name), "__restvmx_%d", n);
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagRestVmx;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_EPILOG);
@@ -502,7 +506,7 @@ int XexModule::FindSaveRest() {
       xesnprintfa(name, XECOUNT(name), "__restvmx_%d", n);
       FunctionInfo* symbol_info;
       DeclareFunction(address, &symbol_info);
-      // TODO(benvanik): set name
+      symbol_info->set_name(name);
       // TODO(benvanik): set type  fn->type = FunctionSymbol::User;
       // TODO(benvanik): set flags fn->flags |= FunctionSymbol::kFlagRestVmx;
       symbol_info->set_behavior(FunctionInfo::BEHAVIOR_EPILOG);
diff --git a/tools/alloy-sandbox/alloy-sandbox.cc b/tools/alloy-sandbox/alloy-sandbox.cc
index 6afe7b75f..199232b66 100644
--- a/tools/alloy-sandbox/alloy-sandbox.cc
+++ b/tools/alloy-sandbox/alloy-sandbox.cc
@@ -38,7 +38,7 @@ int alloy_sandbox(int argc, xechar_t** argv) {
   //     runtime);
   runtime->Initialize(backend);
 
-  RawModule* module = new RawModule(runtime->memory());
+  RawModule* module = new RawModule(runtime);
   module->LoadFile(0x82000000, "test\\codegen\\instr_add.bin");
   runtime->AddModule(module);