feat: Massive OS expansion with IPC, Sound & TTS, Block layer, FAT32/ext2/sysfs, Signals, Syscalls, Modules, Drivers & 50+ LazyBox applets

kernel/syscall.c

@@ -0,0 +1,36 @@
+#include <kernel/syscall.h>
+#include <fs/vfs.h>
+#include <kernel/task.h>
+#include <kernel/signal.h>
+#include <kernel/printk.h>
+
+void syscall_init(void) {
+    printk(KERN_INFO "SYSCALL: x86_64 Fast SYSCALL/SYSRET Dispatcher online\n");
+}
+
+int64_t syscall_handler(uint64_t num, uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4, uint64_t a5, uint64_t a6) {
+    (void)a4; (void)a5; (void)a6;
+    switch (num) {
+        case SYS_read:
+            return (int64_t)vfs_read((int)a1, (void*)a2, (size_t)a3);
+        case SYS_write:
+            return (int64_t)vfs_write((int)a1, (const void*)a2, (size_t)a3);
+        case SYS_open:
+            return (int64_t)vfs_open((const char*)a1, (int)a2);
+        case SYS_close:
+            return (int64_t)vfs_close((int)a1);
+        case SYS_lseek:
+            return (int64_t)vfs_lseek((int)a1, (off_t)a2, (int)a3);
+        case SYS_getpid:
+            return (int64_t)task_get_pid();
+        case SYS_kill:
+            return (int64_t)signal_send((uint32_t)a1, (int)a2);
+        case SYS_mkdir:
+            return (int64_t)vfs_mkdir((const char*)a1, (uint32_t)a2);
+        case SYS_exit:
+            task_exit((int)a1);
+            return 0;
+        default:
+            return -1; // ENOSYS
+    }
+}