4 files changed, 42 insertions, 7 deletions
diff --git a/dev/user/Opts.h b/dev/user/Opts.h
new file mode 100644
index 00000000..09a77570
--- /dev/null
+++ b/dev/user/Opts.h
@@ -0,0 +1,12 @@
+/* -------------------------------------------
+
+	Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#include <cstdarg>
+
+IMPORT_C VoidPtr sci_syscall_arg_1(SizeT id);
+IMPORT_C VoidPtr sci_syscall_arg_2(SizeT id, VoidPtr arg1);
+IMPORT_C VoidPtr sci_syscall_arg_3(SizeT id, VoidPtr arg1, VoidPtr arg3);
+IMPORT_C VoidPtr sci_syscall_arg_4(SizeT id, VoidPtr arg1, VoidPtr arg3, VoidPtr arg4);
diff --git a/dev/user/src/SystemCalls+IO.asm b/dev/user/src/SystemCalls+IO.asm
index 58ea79e7..77e22b59 100644
--- a/dev/user/src/SystemCalls+IO.asm
+++ b/dev/user/src/SystemCalls+IO.asm
@@ -1,7 +1,7 @@
 ;; /*
 ;; *	========================================================
 ;; *
-;; *	libsci
+;; *	user/src/SystemCalls+IO.asm
 ;; * 	Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
 ;; *
 ;; * 	========================================================
diff --git a/dev/user/src/SystemCalls.cc b/dev/user/src/SystemCalls.cc
index 7ad0fe6f..20eaa0e0 100644
--- a/dev/user/src/SystemCalls.cc
+++ b/dev/user/src/SystemCalls.cc
@@ -5,14 +5,10 @@
 ------------------------------------------- */
 
 #include <user/SystemCalls.h>
+#include <user/Opts.h>
 
 /// @file SystemCalls.cc
-/// @brief Source file for the memory functions of the libsci.
-
-IMPORT_C VoidPtr sci_syscall_arg_1(SizeT id);
-IMPORT_C VoidPtr sci_syscall_arg_2(SizeT id, VoidPtr arg1);
-IMPORT_C VoidPtr sci_syscall_arg_3(SizeT id, VoidPtr arg1, VoidPtr arg3);
-IMPORT_C VoidPtr sci_syscall_arg_4(SizeT id, VoidPtr arg1, VoidPtr arg3, VoidPtr arg4);
+/// @brief Source file for the memory functions of the user.sys.
 
 /// @brief Copy memory region.
 IMPORT_C VoidPtr MmCopyMemory(_Input VoidPtr dest, _Input VoidPtr src, _Input SizeT len)
@@ -32,6 +28,7 @@ IMPORT_C VoidPtr MmCopyMemory(_Input VoidPtr dest, _Input VoidPtr src, _Input Si
 	return dest;
 }
 
+/// @brief Get string length.
 IMPORT_C SInt64 MmStrLen(const Char* in)
 {
 	if (!in)
@@ -89,3 +86,28 @@ IMPORT_C UInt64 IoTellFile(_Input Ref desc)
 	auto ret = (UInt64*)sci_syscall_arg_2(4, reinterpret_cast<VoidPtr>(desc));
 	return *ret;
 }
+
+/// @brief Print to the file descriptor.
+/// @param desc the file descriptor.
+IMPORT_C SInt32 PrintOut(_Input IORef desc, const char* fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+
+	auto ret = (UInt64*)sci_syscall_arg_4(5, reinterpret_cast<VoidPtr>(desc),
+										  reinterpret_cast<VoidPtr>(const_cast<Char*>(fmt)), args);
+
+	va_end(args);
+
+	return *ret;
+}
+
+IMPORT_C Void _rtl_assert(Bool expr, const Char* origin)
+{
+	if (!expr)
+	{
+		PrintOut(nullptr, "Assertion failed: %s\r", origin);
+		PrintOut(nullptr, "Origin: %s\r", origin);
+	}
+}
+\ No newline at end of file
diff --git a/dev/user/user.json b/dev/user/user.json
index 9581d4d4..05b90abf 100644
--- a/dev/user/user.json
+++ b/dev/user/user.json
@@ -7,6 +7,7 @@
   "compiler_flags": [
     "-ffreestanding",
     "-shared",
+    "-fPIC",
     "-fno-rtti",
     "-fno-exceptions",
     "-Wl,--subsystem=17"