From 86dcf317ab0d26fb803e23558ec949b0def1b7c2 Mon Sep 17 00:00:00 2001
From: Rafal Kupiec <belliash@codingworkshop.eu.org>
Date: Wed, 7 Feb 2024 17:48:33 +0100
Subject: [PATCH] Add NTOS compatibility driver

---
 CMakeLists.txt                 |  1 +
 drivers/CMakeLists.txt         |  1 +
 drivers/ntosdrv/CMakeLists.txt | 29 +++++++++++++++++++++++++++++
 drivers/ntosdrv/ntosdrv.c      | 17 +++++++++++++++++
 drivers/ntosdrv/ntosdrv.spec   |  2 ++
 5 files changed, 50 insertions(+)
 create mode 100644 drivers/CMakeLists.txt
 create mode 100644 drivers/ntosdrv/CMakeLists.txt
 create mode 100644 drivers/ntosdrv/ntosdrv.c
 create mode 100644 drivers/ntosdrv/ntosdrv.spec

diff --git a/CMakeLists.txt b/CMakeLists.txt
index adbbd1e..2bcd756 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,5 +70,6 @@ set_disk_image_size(32)
 
 # Build all subprojects
 add_subdirectory(bootdata)
+add_subdirectory(drivers)
 add_subdirectory(xtldr)
 add_subdirectory(xtoskrnl)
diff --git a/drivers/CMakeLists.txt b/drivers/CMakeLists.txt
new file mode 100644
index 0000000..092b57b
--- /dev/null
+++ b/drivers/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(ntosdrv)
diff --git a/drivers/ntosdrv/CMakeLists.txt b/drivers/ntosdrv/CMakeLists.txt
new file mode 100644
index 0000000..c243389
--- /dev/null
+++ b/drivers/ntosdrv/CMakeLists.txt
@@ -0,0 +1,29 @@
+# NTOS compatibility driver
+PROJECT(NTOSDRV)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk)
+
+# Specify list of source code files
+list(APPEND NTOSDRV_SOURCE
+    ${NTOSDRV_SOURCE_DIR}/ntosdrv.c)
+
+# Set module definition SPEC file
+set_specfile(ntosdrv.spec ntosdrv.sys)
+
+# Link bootloader executable
+add_executable(ntosdrv ${NTOSDRV_SOURCE} ${CMAKE_CURRENT_BINARY_DIR}/ntosdrv.def)
+
+# Add linker libraries
+target_link_libraries(ntosdrv xtoskrnl)
+
+# Set proper binary name and install target
+set_target_properties(ntosdrv PROPERTIES SUFFIX .sys)
+set_install_target(ntosdrv "exectos/drivers")
+
+# Set loader entrypoint and subsystem
+set_entrypoint(ntosdrv "XtDriverEntry")
+set_linker_map(ntosdrv TRUE)
+set_ordinals(ntosdrv TRUE)
+set_subsystem(ntosdrv native xt_native_driver)
diff --git a/drivers/ntosdrv/ntosdrv.c b/drivers/ntosdrv/ntosdrv.c
new file mode 100644
index 0000000..63bca9d
--- /dev/null
+++ b/drivers/ntosdrv/ntosdrv.c
@@ -0,0 +1,17 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            drivers/ntosdrv/ntosdrv.c
+ * DESCRIPTION:     NTOS compatibility driver
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtkmapi.h>
+
+XTAPI
+XTSTATUS
+XtDriverEntry()
+{
+    /* Return success */
+    return STATUS_SUCCESS;
+}
diff --git a/drivers/ntosdrv/ntosdrv.spec b/drivers/ntosdrv/ntosdrv.spec
new file mode 100644
index 0000000..fb4aaa7
--- /dev/null
+++ b/drivers/ntosdrv/ntosdrv.spec
@@ -0,0 +1,2 @@
+# NT compatibilty layer exports
+@ fastcall ExRundownCompleted(ptr) ExCompleteRundownProtection