wip: IPC and Runtime

Runtime/System/libksOS/CMakeLists.txt

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+cmake_minimum_required(VERSION 3.20)
+project(libksOS LANGUAGES C ASM)
+
+file(GLOB_RECURSE LIB_SOURCES CMAKE_CONFIGURE_DEPENDS
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.c
+)
+
+add_library(ksOS STATIC ${LIB_SOURCES})
+
+target_include_directories(ksOS PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}/Include
+)
+
+target_compile_options(ksOS PRIVATE
+    -std=c23 -fno-stack-protector -fno-builtin -Wall -Wextra
+)

Runtime/System/libksOS/Include/ksOS/Syscall.h

@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKSor
+
+#pragma once
+#include <ksOS/Types.h>
+
+enum {
+    kSyscallSend = 1,
+    kSyscallReceive,
+};
+
+typedef struct IPCMessage {
+    UInt64 senderID;
+    UInt64 data;
+} IPCMessage;
+
+static inline UInt64 SysSend(UInt64 handleID, UInt64 data) {
+    register UInt64 x8 __asm__("x8") = kSyscallSend;
+    register UInt64 x0 __asm__("x0") = handleID;
+    register UInt64 x1 __asm__("x1") = data;
+
+    __asm__ volatile(
+        "svc #0\n"
+        : "+r" (x0)
+        : "r" (x1), "r" (x8)
+        : "memory", "cc"
+    );
+    return x0;
+}
+
+static inline IPCMessage SysRecive(void) {
+    register UInt64 x8 __asm__("x8") = kSyscallReceive;
+    register UInt64 x0 __asm__("x0");
+    register UInt64 x1 __asm__("x1");
+
+    __asm__ volatile(
+        "svc #0\n"
+        : "=r" (x0), "=r" (x1)
+        : "r" (x8)
+        : "memory", "cc"
+    );
+
+    struct IPCMessage msg = { x0, x1 };
+    return msg;
+}
+
+static inline void Sys228(void) {
+    register UInt64 x8 __asm__("x8") = 228;
+    __asm__ volatile(
+        "svc #0\n"
+        :
+        : "r" (x8)
+        : "memory", "cc"
+    );
+}

Runtime/System/libksOS/Include/ksOS/Types.h

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKSor
+
+#pragma once
+
+#if defined(NDEBUG) || defined(__OPTIMIZE__)
+    #define IS_RELEASE 1
+#else
+    #define IS_RELEASE 0
+#endif
+
+typedef unsigned char      UInt8;
+typedef unsigned short     UInt16;
+typedef unsigned int       UInt32;
+typedef unsigned long long UInt64;
+typedef unsigned long long UInt;
+
+typedef void* Pointer;
+typedef UInt Address;
+typedef UInt32 Address32;
+typedef UInt8* BytePointer;
+typedef UInt8* MemoryPointer;
+
+typedef signed char        Int8;
+typedef signed short       Int16;
+typedef signed int         Int32;
+typedef signed long long   Int64;
+typedef int Int;
+
+typedef UInt64 Size;
+typedef char ASCII;
+
+typedef _Bool Boolean;

Runtime/System/libksOS/Source/Syscall.c

@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKSor

Runtime/System/libksOS/Source/crt0.S

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright (c) 2026 0xKSor
+
+.section .text.entry, "ax"
+.global _start
+_start:
+    adrp x0, stack_top
+    add  sp, x0, :lo12:stack_top
+    bl   main
+    b    .
+
+.section .bss, "aw", @nobits
+.align 12  // 4KB alignment
+stack_bottom:
+    .space 8192  // 8KB stack
+stack_top: