refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.

1 files changed, 75 insertions, 0 deletions

diff --git a/lume-legacy/include/user/user.h b/lume-legacy/include/user/user.h
new file mode 100644
index 0000000..7af8bdd
--- /dev/null
+++ b/lume-legacy/include/user/user.h
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2026 Richard Qin
+ */
+#pragma once
+
+typedef unsigned long long uint64;
+
+#define AT_FDCWD -100
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    // Raw Linux System Calls
+    int sys_openat(int dfd, const char *filename, int flags, int mode);
+    int sys_mknodat(int dfd, const char *filename, int mode, int dev);
+    int sys_mkdirat(int dfd, const char *path, int mode);
+    int sys_unlinkat(int dfd, const char *path, int flags);
+    int sys_linkat(int olddfd, const char *oldpath, int newdfd, const char *newpath, int flags);
+    int sys_chdir(const char *path);
+    int sys_dup(int oldfd);
+    int sys_fstat(int fd, void *statbuf);
+    int sys_read(int fd, void *buf, int count);
+    int sys_write(int fd, const void *buf, int count);
+    int sys_close(int fd);
+    int sys_pipe2(int pipefd[2], int flags);
+    int sys_clone(unsigned long flags, void *stack, int *ptid, void *tls, int *ctid);
+    int sys_execve(const char *path, char *const argv[], char *const envp[]);
+    int sys_wait4(int pid, int *status, int options, void *rusage);
+    int sys_exit(int status);
+    int sys_getpid();
+    int sys_brk(int n);
+    int sys_kill(int pid, int sig);
+    int sys_nanosleep(void *req, void *rem);
+    int sys_reboot(int magic1, int magic2, int cmd, void *arg);
+    int sys_lseek(int fd, int offset, int whence);
+
+    // Custom
+    void sys_putc(char c);
+    int sys_disk_test();
+
+    // POSIX Wrappers
+    int fork();
+    int exit(int status);
+    int wait(uint64 status_addr);
+    int pipe(int p[]);
+    int write(int fd, const void *buf, int n);
+    int read(int fd, void *buf, int n);
+    int close(int fd);
+    int kill(int pid);
+    int exec(char *, char **);
+    int open(const char *, int);
+    int mknod(const char *, short, short);
+    int unlink(const char *);
+    int link(const char *, const char *);
+    int fstat(int fd, void *st);
+    int mkdir(const char *);
+    int chdir(const char *);
+    int dup(int fd);
+    int getpid();
+    char *sbrk(int n);
+    int sleep(int ticks);
+    int uptime();
+    int shutdown();
+    int lseek(int fd, int offset, int whence);
+
+    // Debug
+    void putc(char c);
+    int disk_test();
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file