From 0b0f61ae48bbd8827d6088feab6cf58e7837bf92 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Tue, 15 Apr 2025 17:04:45 +0200
Subject: dev, user: drafting a system call map.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/user/Macros.h                                  | 34 ++++++++++++++-
 dev/user/src/SystemCalls.cc                        | 48 +++++++++++++++++++++-
 .../frameworks/DiskImage.fwrk/headers/DiskImage.h  |  1 -
 public/tools/diutil/diutil.json                    |  4 +-
 4 files changed, 82 insertions(+), 5 deletions(-)

diff --git a/dev/user/Macros.h b/dev/user/Macros.h
index 98beeb0d..556833ea 100644
--- a/dev/user/Macros.h
+++ b/dev/user/Macros.h
@@ -90,4 +90,36 @@ IMPORT_C void _rtl_assert(Bool expr, const Char* origin);
 #define ARRAY_SIZE(X)              \
 	(((sizeof(X) / sizeof(*(X))) / \
 	  (static_cast<SizeT>(!(sizeof(X) % sizeof(*(X)))))))
-#endif
\ No newline at end of file
+#endif
+
+#ifndef KIB
+#define KIB(X) (UInt64)((X) / 1024)
+#endif
+
+#ifndef kib_cast
+#define kib_cast(X) (UInt64)((X)*1024)
+#endif
+
+#ifndef MIB
+#define MIB(X) (UInt64)((UInt64)KIB(X) / 1024)
+#endif
+
+#ifndef mib_cast
+#define mib_cast(X) (UInt64)((UInt64)kib_cast(X) * 1024)
+#endif
+
+#ifndef GIB
+#define GIB(X) (UInt64)((UInt64)MIB(X) / 1024)
+#endif
+
+#ifndef gib_cast
+#define gib_cast(X) (UInt64)((UInt64)mib_cast(X) * 1024)
+#endif
+
+#ifndef TIB
+#define TIB(X) (UInt64)((UInt64)GIB(X) / 1024)
+#endif
+
+#ifndef tib_cast
+#define tib_cast(X) ((UInt64)gib_cast(X) * 1024)
+#endif
diff --git a/dev/user/src/SystemCalls.cc b/dev/user/src/SystemCalls.cc
index 2dd27dc0..7ad0fe6f 100644
--- a/dev/user/src/SystemCalls.cc
+++ b/dev/user/src/SystemCalls.cc
@@ -6,9 +6,14 @@
 
 #include <user/SystemCalls.h>
 
-/// @file libsci.cc
+/// @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 Copy memory region.
 IMPORT_C VoidPtr MmCopyMemory(_Input VoidPtr dest, _Input VoidPtr src, _Input SizeT len)
 {
@@ -27,6 +32,21 @@ IMPORT_C VoidPtr MmCopyMemory(_Input VoidPtr dest, _Input VoidPtr src, _Input Si
 	return dest;
 }
 
+IMPORT_C SInt64 MmStrLen(const Char* in)
+{
+	if (!in)
+		return 0;
+
+	SizeT len{0};
+
+	do
+	{
+		++len;
+	} while (in[len] != '\0');
+
+	return len;
+}
+
 /// @brief Fill memory region **dest** with **value**.
 IMPORT_C VoidPtr MmFillMemory(_Input VoidPtr dest, _Input SizeT len, _Input UInt8 value)
 {
@@ -43,3 +63,29 @@ IMPORT_C VoidPtr MmFillMemory(_Input VoidPtr dest, _Input SizeT len, _Input UInt
 
 	return dest;
 }
+
+IMPORT_C Ref IoOpenFile(_Input const Char* path, _Input const Char* drv_letter)
+{
+	return sci_syscall_arg_3(1, reinterpret_cast<VoidPtr>(const_cast<Char*>(path)),
+							 reinterpret_cast<VoidPtr>(const_cast<Char*>(drv_letter)));
+}
+
+IMPORT_C Void IoCloseFile(_Input Ref desc)
+{
+	sci_syscall_arg_2(2, desc);
+}
+
+IMPORT_C UInt64 IoSeekFile(_Input Ref desc, _Input UInt64 off)
+{
+	auto ret = (UInt64*)sci_syscall_arg_3(3, reinterpret_cast<VoidPtr>(desc),
+										  reinterpret_cast<VoidPtr>(&off));
+
+	MUST_PASS((*ret) != ~0UL);
+	return *ret;
+}
+
+IMPORT_C UInt64 IoTellFile(_Input Ref desc)
+{
+	auto ret = (UInt64*)sci_syscall_arg_2(4, reinterpret_cast<VoidPtr>(desc));
+	return *ret;
+}
diff --git a/public/frameworks/DiskImage.fwrk/headers/DiskImage.h b/public/frameworks/DiskImage.fwrk/headers/DiskImage.h
index 1dc23c0a..c0566485 100644
--- a/public/frameworks/DiskImage.fwrk/headers/DiskImage.h
+++ b/public/frameworks/DiskImage.fwrk/headers/DiskImage.h
@@ -10,7 +10,6 @@
 #pragma once
 
 #include <user/SystemCalls.h>
-#include <NewKit/Defines.h>
 
 #define kDISectorSz			 (512)
 #define kDIMinDiskSz		 mib_cast(1)
diff --git a/public/tools/diutil/diutil.json b/public/tools/diutil/diutil.json
index 0805e69f..19b845c5 100644
--- a/public/tools/diutil/diutil.json
+++ b/public/tools/diutil/diutil.json
@@ -1,8 +1,8 @@
 {
   "compiler_path": "g++",
   "compiler_std": "c++20",
-  "headers_path": ["./", "../../../dev/kernel",  "../../../dev/", "./"],
-  "sources_path": ["src/CommandLine.cc"],
+  "headers_path": ["./", "../../../dev/kernel", "../../../public/frameworks/", "../../../dev/", "./"],
+  "sources_path": ["src/CommandLine.cc", "../../../public/frameworks/DiskImage.fwrk/src/*.cc", "../../../dev/user/src/*.cc"],
   "output_name": "./dist/diutil",
   "cpp_macros": [
     "kDUTILVersion=0x0100",
-- 
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