Add support for NSO modules.

src/core/gdbstub/gdbstub.cpp

@@ -172,6 +172,22 @@ static std::map<u64, Breakpoint> breakpoints_execute;
 static std::map<u64, Breakpoint> breakpoints_read;
 static std::map<u64, Breakpoint> breakpoints_write;
 
+struct Module {
+    char name[128];
+    PAddr beg;
+    PAddr end;
+};
+
+static std::vector<Module> modules;
+
+void RegisterModule(const char* name, PAddr beg, PAddr end) {
+    Module module;
+    strncpy(module.name, name, sizeof(module.name));
+    module.beg = beg;
+    module.end = end;
+    modules.push_back(module);
+}
+
 static Kernel::Thread* FindThreadById(int id) {
     for (unsigned core = 0; core < Core::NUM_CPU_CORES; core++) {
         auto threads = Core::System::GetInstance().Scheduler(core)->GetThreadList();
@@ -535,12 +551,28 @@ static void HandleQuery() {
         SendReply("T0");
     } else if (strncmp(query, "Supported", strlen("Supported")) == 0) {
         // PacketSize needs to be large enough for target xml
-        SendReply("PacketSize=2000;qXfer:features:read+;qXfer:threads:read+");
+        std::string buffer = "PacketSize=2000;qXfer:features:read+;qXfer:threads:read+";
+        if (modules.size()) {
+            buffer += ";qXfer:libraries:read+";
+        }
+        SendReply(buffer.c_str());
     } else if (strncmp(query, "Xfer:features:read:target.xml:",
                        strlen("Xfer:features:read:target.xml:")) == 0) {
         SendReply(target_xml);
     } else if (strncmp(query, "Offsets", strlen("Offsets")) == 0) {
-        std::string buffer = fmt::format("TextSeg={:0x}", Memory::PROCESS_IMAGE_VADDR);
+        std::string buffer;
+        // if(modules.size())
+        //{
+        //    for(auto module : modules)
+        //    {
+        //        if(stricmp(module.name, "main") == 0)
+        //        {
+        //            buffer = fmt::format("TextSeg={:0x}", module.beg);
+        //        }
+        //    }
+        //}
+        // else
+        { buffer = fmt::format("TextSeg={:0x}", Memory::PROCESS_IMAGE_VADDR); }
         SendReply(buffer.c_str());
     } else if (strncmp(query, "fThreadInfo", strlen("fThreadInfo")) == 0) {
         std::string val = "m";
@@ -569,6 +601,17 @@ static void HandleQuery() {
         }
         buffer += "</threads>";
         SendReply(buffer.c_str());
+    } else if (strncmp(query, "Xfer:libraries:read", strlen("Xfer:libraries:read")) == 0) {
+        std::string buffer;
+        buffer += "l<?xml version=\"1.0\"?>";
+        buffer += "<library-list>";
+        for (auto module : modules) {
+            buffer +=
+                fmt::format(R"*("<library name = "{}"><section address = "0x{:x}"/></library>)*",
+                            module.name, module.beg);
+        }
+        buffer += "</library-list>";
+        SendReply(buffer.c_str());
     } else {
         SendReply("");
     }
@@ -827,7 +870,7 @@ static void ReadMemory() {
         SendReply("E01");
     }
 
-    if (!Memory::IsValidVirtualAddress(addr)) {
+    if (!Memory::IsValidVirtualAddress(addr) && (addr < Memory::STACK_AREA_VADDR)) {
         return SendReply("E00");
     }
 
@@ -1112,6 +1155,8 @@ static void Init(u16 port) {
     breakpoints_read.clear();
     breakpoints_write.clear();
 
+    modules.clear();
+
     // Start gdb server
     NGLOG_INFO(Debug_GDBStub, "Starting GDB server on port {}...", port);
 

src/core/gdbstub/gdbstub.h

@@ -51,6 +51,9 @@ bool IsServerEnabled();
 /// Returns true if there is an active socket connection.
 bool IsConnected();
 
+/// Register module.
+void RegisterModule(const char* name, PAddr beg, PAddr end);
+
 /**
  * Signal to the gdbstub server that it should halt CPU execution.
  *

src/core/loader/deconstructed_rom_directory.cpp

@@ -9,6 +9,7 @@
 #include "common/logging/log.h"
 #include "common/string_util.h"
 #include "core/file_sys/romfs_factory.h"
+#include "core/gdbstub/gdbstub.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -133,6 +134,7 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
         next_load_addr = AppLoader_NSO::LoadModule(path, load_addr);
         if (next_load_addr) {
             NGLOG_DEBUG(Loader, "loaded module {} @ 0x{:X}", module, load_addr);
+            GDBStub::RegisterModule(module, load_addr, next_load_addr);
         } else {
             next_load_addr = load_addr;
         }