Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

1 files changed, 0 insertions, 185 deletions

diff --git a/kernel/sys_process.cc b/kernel/sys_process.cc
deleted file mode 100644
index 438ad1b..0000000
--- a/kernel/sys_process.cc
+++ /dev/null
@@ -1,185 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* Copyright (C) 2026 Richard Qin */
-
-/*
- * Process Control System Calls
- *
- * Implements: exit, exit_group, getpid, gettid, getppid,
- *             sched_yield, clone (stub), wait4 (stub),
- *             set_tid_address, getuid, getgid.
- *
- * Reference: docs/specs/syscall.md §7.1
- */
-
-#include "lume/klog.h"
-#include <lume/types.h>
-#include <lume/task.h>
-#include <lume/sched.h>
-#include <lume/errno.h>
-#include <lume/uaccess.h>
-#include <lume/wait.h>
-
-/* External: task lifecycle (kernel/task.cc) */
-extern void task_exit(int code);
-extern int32 do_wait4(int32 wait_pid, int options, int32* exit_code);
-extern int32 task_clone(arch::TrapFrame* tf, uint64 clone_flags,
-                        uint64 child_stack, uint64 parent_tidptr,
-                        uint64 child_tidptr, uint64 tls);
-extern int32 task_fork(arch::TrapFrame* tf);
-
-/* ======================================================================
- * sys_exit / sys_exit_group
- * ====================================================================== */
-
-int64 sys_exit(uint64 code, uint64, uint64, uint64, uint64, uint64)
-{
-    task_exit(static_cast<int>(code & 0xFF));
-    __builtin_unreachable();
-}
-
-int64 sys_exit_group(uint64 code, uint64, uint64, uint64, uint64, uint64)
-{
-    /* Phase 2: single-threaded, equivalent to sys_exit.
-     * Phase 3: kill all threads in tgid then exit. */
-    task_exit(static_cast<int>(code & 0xFF));
-    __builtin_unreachable();
-}
-
-/* ======================================================================
- * sys_getpid / sys_gettid / sys_getppid
- * ====================================================================== */
-
-int64 sys_getpid(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    return current_task()->tgid;  /* Linux: getpid() returns tgid */
-}
-
-int64 sys_gettid(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    return current_task()->pid;   /* Linux: gettid() returns real tid */
-}
-
-int64 sys_getppid(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    TaskControlBlock* parent = current_task()->parent;
-    return parent ? parent->tgid : 0;
-}
-
-/* ======================================================================
- * sys_sched_yield
- * ====================================================================== */
-
-int64 sys_sched_yield_wrapper(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    sched_yield();
-    return 0;
-}
-
-int64 sys_clone_wrapper(uint64 flags, uint64 child_stack,
-                        uint64 ptid, uint64 ctid, uint64 tls, uint64)
-{
-    arch::TrapFrame* tf = current_task()->trapframe;
-    if (!tf) return -EINVAL;
-
-    return task_clone(tf, flags, child_stack, ptid, ctid, tls);
-}
-
-/* ========================================================================
- * sys_wait4 — Wait for child to exit
- * ======================================================================== */
-
-int64 sys_wait4_wrapper(uint64 pid, uint64 wstatus_ptr,
-                        uint64 options, uint64, uint64, uint64)
-{
-    int32 exit_code = 0;
-    int32 child_pid = do_wait4(static_cast<int32>(pid),
-                               static_cast<int>(options),
-                               &exit_code);
-
-    if (child_pid < 0) return child_pid;
-
-    /* exit_code is already in Linux wstatus format */
-    if (wstatus_ptr != 0) {
-        if (copy_to_user(wstatus_ptr, &exit_code, sizeof(int)) < 0)
-            return -EFAULT;
-    }
-
-    return child_pid;
-}
-
-/* ======================================================================
- * sys_set_tid_address — musl libc calls this very early
- * ====================================================================== */
-
-int64 sys_set_tid_address(uint64 tidptr, uint64, uint64,
-                          uint64, uint64, uint64)
-{
-    /* Store clear_child_tid pointer — on exit, kernel writes 0 here
-     * and does futex_wake (enables pthread_join). */
-    current_task()->clear_child_tid = tidptr;
-    return current_task()->pid;
-}
-
-/* ======================================================================
- * sys_getuid / sys_getgid — Phase 2: always root
- * ====================================================================== */
-
-int64 sys_getuid(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    return 0; /* root */
-}
-
-int64 sys_getgid(uint64, uint64, uint64, uint64, uint64, uint64)
-{
-    return 0; /* root */
-}
-
-/* ======================================================================
- * sys_nanosleep (SYS_nanosleep = 101)
- * ====================================================================== */
-#include <lume/wait.h>
-#include <lume/kprintf.h>
-#include <lume/timer.h>
-
-struct linux_timespec {
-    int64 tv_sec;
-    int64 tv_nsec;
-};
-
-static void nanosleep_wakeup(TimerList* t) {
-    TaskControlBlock* task = static_cast<TaskControlBlock*>(t->data);
-    task->state = TaskState::Runnable;
-    sched_enqueue(task);
-}
-
-int64 sys_nanosleep(uint64 req_ptr, uint64 rem_ptr, uint64, uint64, uint64, uint64) {
-    if (req_ptr == 0) return -EINVAL;
-
-    linux_timespec req;
-    if (copy_from_user(&req, req_ptr, sizeof(req)) != 0) {
-        return -EFAULT;
-    }
-
-    uint64 target = *(volatile uint64*)&g_jiffies + (req.tv_sec * 100) + (req.tv_nsec / 10000000);
-    
-    TaskControlBlock* curr = current_task();
-    curr->state = TaskState::Sleeping;
-    
-    TimerList t;
-    t.init(nanosleep_wakeup);
-    t.expires = target;
-    t.data = curr;
-    
-    add_timer(&t);
-    
-    if (*(volatile uint64*)&g_jiffies < target) {
-        schedule();
-    } else {
-        curr->state = TaskState::Running;
-    }
-    
-    
-    del_timer(&t);
-
-    return 0;
-}