1 files changed, 37 insertions, 17 deletions

diff --git a/src/core/debugger/gdbstub.cpp b/src/core/debugger/gdbstub.cpp
index a64a9ac64..945ec528e 100644
--- a/src/core/debugger/gdbstub.cpp
+++ b/src/core/debugger/gdbstub.cpp
@@ -11,6 +11,7 @@
 #include "common/hex_util.h"
 #include "common/logging/log.h"
 #include "common/scope_exit.h"
+#include "common/settings.h"
 #include "core/arm/arm_interface.h"
 #include "core/core.h"
 #include "core/debugger/gdbstub.h"
@@ -95,7 +96,7 @@ static std::string EscapeXML(std::string_view data) {
 
 GDBStub::GDBStub(DebuggerBackend& backend_, Core::System& system_)
     : DebuggerFrontend(backend_), system{system_} {
-    if (system.CurrentProcess()->Is64BitProcess()) {
+    if (system.ApplicationProcess()->Is64BitProcess()) {
         arch = std::make_unique<GDBStubA64>();
     } else {
         arch = std::make_unique<GDBStubA32>();
@@ -339,15 +340,15 @@ void GDBStub::HandleBreakpointInsert(std::string_view command) {
         success = true;
         break;
     case BreakpointType::WriteWatch:
-        success = system.CurrentProcess()->InsertWatchpoint(system, addr, size,
-                                                            Kernel::DebugWatchpointType::Write);
+        success = system.ApplicationProcess()->InsertWatchpoint(system, addr, size,
+                                                                Kernel::DebugWatchpointType::Write);
         break;
     case BreakpointType::ReadWatch:
-        success = system.CurrentProcess()->InsertWatchpoint(system, addr, size,
-                                                            Kernel::DebugWatchpointType::Read);
+        success = system.ApplicationProcess()->InsertWatchpoint(system, addr, size,
+                                                                Kernel::DebugWatchpointType::Read);
         break;
     case BreakpointType::AccessWatch:
-        success = system.CurrentProcess()->InsertWatchpoint(
+        success = system.ApplicationProcess()->InsertWatchpoint(
             system, addr, size, Kernel::DebugWatchpointType::ReadOrWrite);
         break;
     case BreakpointType::Hardware:
@@ -390,15 +391,15 @@ void GDBStub::HandleBreakpointRemove(std::string_view command) {
         break;
     }
     case BreakpointType::WriteWatch:
-        success = system.CurrentProcess()->RemoveWatchpoint(system, addr, size,
-                                                            Kernel::DebugWatchpointType::Write);
+        success = system.ApplicationProcess()->RemoveWatchpoint(system, addr, size,
+                                                                Kernel::DebugWatchpointType::Write);
         break;
     case BreakpointType::ReadWatch:
-        success = system.CurrentProcess()->RemoveWatchpoint(system, addr, size,
-                                                            Kernel::DebugWatchpointType::Read);
+        success = system.ApplicationProcess()->RemoveWatchpoint(system, addr, size,
+                                                                Kernel::DebugWatchpointType::Read);
         break;
     case BreakpointType::AccessWatch:
-        success = system.CurrentProcess()->RemoveWatchpoint(
+        success = system.ApplicationProcess()->RemoveWatchpoint(
             system, addr, size, Kernel::DebugWatchpointType::ReadOrWrite);
         break;
     case BreakpointType::Hardware:
@@ -481,7 +482,7 @@ static std::optional<std::string> GetNameFromThreadType64(Core::Memory::Memory&
 
 static std::optional<std::string> GetThreadName(Core::System& system,
                                                 const Kernel::KThread* thread) {
-    if (system.CurrentProcess()->Is64BitProcess()) {
+    if (system.ApplicationProcess()->Is64BitProcess()) {
         return GetNameFromThreadType64(system.Memory(), thread);
     } else {
         return GetNameFromThreadType32(system.Memory(), thread);
@@ -554,7 +555,7 @@ void GDBStub::HandleQuery(std::string_view command) {
             SendReply(fmt::format("TextSeg={:x}", main->first));
         } else {
             SendReply(fmt::format("TextSeg={:x}",
-                                  system.CurrentProcess()->PageTable().GetCodeRegionStart()));
+                                  system.ApplicationProcess()->PageTable().GetCodeRegionStart()));
         }
     } else if (command.starts_with("Xfer:libraries:read::")) {
         Loader::AppLoader::Modules modules;
@@ -728,10 +729,28 @@ void GDBStub::HandleRcmd(const std::vector<u8>& command) {
     std::string_view command_str{reinterpret_cast<const char*>(&command[0]), command.size()};
     std::string reply;
 
-    auto* process = system.CurrentProcess();
+    auto* process = system.ApplicationProcess();
     auto& page_table = process->PageTable();
 
-    if (command_str == "get info") {
+    const char* commands = "Commands:\n"
+                           "  get fastmem\n"
+                           "  get info\n"
+                           "  get mappings\n";
+
+    if (command_str == "get fastmem") {
+        if (Settings::IsFastmemEnabled()) {
+            const auto& impl = page_table.PageTableImpl();
+            const auto region = reinterpret_cast<uintptr_t>(impl.fastmem_arena);
+            const auto region_bits = impl.current_address_space_width_in_bits;
+            const auto region_size = 1ULL << region_bits;
+
+            reply = fmt::format("Region bits:  {}\n"
+                                "Host address: {:#x} - {:#x}\n",
+                                region_bits, region, region + region_size - 1);
+        } else {
+            reply = "Fastmem is not enabled.\n";
+        }
+    } else if (command_str == "get info") {
         Loader::AppLoader::Modules modules;
         system.GetAppLoader().ReadNSOModules(modules);
 
@@ -787,9 +806,10 @@ void GDBStub::HandleRcmd(const std::vector<u8>& command) {
             cur_addr = next_address;
         }
     } else if (command_str == "help") {
-        reply = "Commands:\n  get info\n  get mappings\n";
+        reply = commands;
     } else {
-        reply = "Unknown command.\nCommands:\n  get info\n  get mappings\n";
+        reply = "Unknown command.\n";
+        reply += commands;
     }
 
     std::span<const u8> reply_span{reinterpret_cast<u8*>(&reply.front()), reply.size()};