Squash commits for public release

kernel/include/tasking/cpu.h

@@ -0,0 +1,45 @@
+#ifndef _KERNEL_TASKING_CPU_H
+#define _KERNEL_TASKING_CPU_H
+
+#include <platform/generic/cpu.h>
+#include <platform/generic/fpu/fpu.h>
+#include <tasking/bits/sched.h>
+#include <tasking/proc.h>
+#include <tasking/thread.h>
+
+#define RUNNING_THREAD (THIS_CPU->running_thread)
+
+static inline cpu_state_t cpu_enter_kernel_space()
+{
+    cpu_state_t prev = THIS_CPU->current_state;
+    THIS_CPU->current_state = CPU_IN_KERNEL;
+    return prev;
+}
+
+static inline cpu_state_t cpu_get_state()
+{
+    return THIS_CPU->current_state;
+}
+
+static inline void cpu_set_state(cpu_state_t state)
+{
+    THIS_CPU->current_state = state;
+}
+
+static inline void cpu_enter_user_space()
+{
+    THIS_CPU->current_state = CPU_IN_USERLAND;
+}
+
+static inline void cpu_tick()
+{
+    if (!THIS_CPU->running_thread) {
+        THIS_CPU->stat_system_and_idle_ticks++;
+    } else if (THIS_CPU->running_thread->process->is_kthread) {
+        THIS_CPU->stat_system_and_idle_ticks++;
+    } else {
+        THIS_CPU->stat_user_ticks++;
+    }
+}
+
+#endif // _KERNEL_TASKING_CPU_H