From 67d34b39888c35c50ed4103886071ea5a3bb13ee Mon Sep 17 00:00:00 2001
From: Maurice Heumann <mauriceheumann@gmail.com>
Date: Mon, 7 Apr 2025 22:01:33 +0200
Subject: [PATCH] Small fix

---
 src/common/platform/status.hpp              |  1 +
 src/windows-emulator/exception_dispatch.cpp |  5 +++
 src/windows-emulator/exception_dispatch.hpp |  1 +
 src/windows-emulator/process_context.cpp    |  1 +
 src/windows-emulator/syscalls.cpp           | 36 +++++++++++++++++++++
 src/windows-emulator/windows_emulator.cpp   |  4 +++
 6 files changed, 48 insertions(+)

diff --git a/src/common/platform/status.hpp b/src/common/platform/status.hpp
index ba1a0cc3..79d97a3b 100644
--- a/src/common/platform/status.hpp
+++ b/src/common/platform/status.hpp
@@ -9,6 +9,7 @@ using NTSTATUS = std::uint32_t;
 #define STATUS_TIMEOUT                ((NTSTATUS)0x00000102L)
 #define STATUS_PENDING                ((NTSTATUS)0x00000103L)
 
+#define STATUS_BREAKPOINT             ((NTSTATUS)0x80000003L)
 #define STATUS_SINGLE_STEP            ((NTSTATUS)0x80000004L)
 
 #define STATUS_ACCESS_VIOLATION       ((NTSTATUS)0xC0000005L)
diff --git a/src/windows-emulator/exception_dispatch.cpp b/src/windows-emulator/exception_dispatch.cpp
index 12a40452..96c5b9e8 100644
--- a/src/windows-emulator/exception_dispatch.cpp
+++ b/src/windows-emulator/exception_dispatch.cpp
@@ -196,3 +196,8 @@ void dispatch_single_step(x64_emulator& emu, const process_context& proc)
 {
     dispatch_exception(emu, proc, STATUS_SINGLE_STEP, {});
 }
+
+void dispatch_breakpoint(x64_emulator& emu, const process_context& proc)
+{
+    dispatch_exception(emu, proc, STATUS_BREAKPOINT, {});
+}
diff --git a/src/windows-emulator/exception_dispatch.hpp b/src/windows-emulator/exception_dispatch.hpp
index 7befde5c..c324399e 100644
--- a/src/windows-emulator/exception_dispatch.hpp
+++ b/src/windows-emulator/exception_dispatch.hpp
@@ -22,3 +22,4 @@ void dispatch_access_violation(x64_emulator& emu, const process_context& proc, u
 void dispatch_illegal_instruction_violation(x64_emulator& emu, const process_context& proc);
 void dispatch_integer_division_by_zero(x64_emulator& emu, const process_context& proc);
 void dispatch_single_step(x64_emulator& emu, const process_context& proc);
+void dispatch_breakpoint(x64_emulator& emu, const process_context& proc);
diff --git a/src/windows-emulator/process_context.cpp b/src/windows-emulator/process_context.cpp
index f8a1d766..06bb6e7a 100644
--- a/src/windows-emulator/process_context.cpp
+++ b/src/windows-emulator/process_context.cpp
@@ -93,6 +93,7 @@ void process_context::setup(x64_emulator& emu, memory_manager& memory, const app
     });
 
     this->peb.access([&](PEB64& p) {
+        p.BeingDebugged = 0;
         p.ImageBaseAddress = executable.image_base;
         p.ProcessParameters = this->process_params.ptr();
         p.ApiSetMap = apiset::clone(emu, allocator, apiset_container).ptr();
diff --git a/src/windows-emulator/syscalls.cpp b/src/windows-emulator/syscalls.cpp
index adcb7df8..0665b967 100644
--- a/src/windows-emulator/syscalls.cpp
+++ b/src/windows-emulator/syscalls.cpp
@@ -1718,6 +1718,42 @@ namespace
             return STATUS_SUCCESS;
         }
 
+        if (info_class == ThreadPerformanceCount)
+        {
+            if (return_length)
+            {
+                return_length.write(sizeof(LARGE_INTEGER));
+            }
+
+            if (thread_information_length < sizeof(LARGE_INTEGER))
+            {
+                return STATUS_BUFFER_OVERFLOW;
+            }
+
+            const emulator_object<LARGE_INTEGER> info{c.emu, thread_information};
+            info.write({});
+
+            return STATUS_SUCCESS;
+        }
+
+        if (info_class == ThreadHideFromDebugger)
+        {
+            if (return_length)
+            {
+                return_length.write(sizeof(BOOLEAN));
+            }
+
+            if (thread_information_length < sizeof(BOOLEAN))
+            {
+                return STATUS_BUFFER_OVERFLOW;
+            }
+
+            const emulator_object<BOOLEAN> info{c.emu, thread_information};
+            info.write(0);
+
+            return STATUS_SUCCESS;
+        }
+
         if (info_class == ThreadTimes)
         {
             if (return_length)
diff --git a/src/windows-emulator/windows_emulator.cpp b/src/windows-emulator/windows_emulator.cpp
index de8f6874..e87f7044 100644
--- a/src/windows-emulator/windows_emulator.cpp
+++ b/src/windows-emulator/windows_emulator.cpp
@@ -475,6 +475,10 @@ void windows_emulator::setup_hooks()
             this->log.print(color::pink, "Singlestep: 0x%" PRIx64 "\n", rip);
             dispatch_single_step(this->emu(), this->process);
             return;
+        case 3:
+            this->log.print(color::pink, "Breakpoint: 0x%" PRIx64 "\n", rip);
+            dispatch_breakpoint(this->emu(), this->process);
+            return;
         case 6:
             dispatch_illegal_instruction_violation(this->emu(), this->process);
             return;